アキュレイト List of Products and Services

"Select Spring" is a free spring selection and design support tool provided by our company. It allows for easy spring design and estimation online, making it a convenient service for designers and developers. 【Features】 ▪️ Automatically selects standard springs that comply with JIS and ISO standards. ▪️ Capable of designing and calculating compression coil springs and tension coil springs, calculating the best spring specifications by inputting the required load and dimensions. ▪️ Easy to check estimates and delivery times for selected springs. ▪️ Supports not only standard products but also the design and estimation of custom springs. ▪️ An Excel version is available for offline use and downloading CAD data. *For more details, please download the catalog or feel free to contact us.

• others

We would like to introduce the three functions of "Erabane-kun" that we handle. By entering your desired conditions for each item, you can pick up the appropriate standard products. It features a "Search Mode" that allows you to filter standard products that meet your search criteria in one go, as well as a "Calculation Mode" that can calculate the necessary loads for design and even the lifespan. Additionally, there is an "Automatic Quotation Mode" that can automatically handle everything from design to quotation in as little as 5 minutes, allowing for easy ordering in four steps. 【Features】 ■ Search Mode - Pick up appropriate standard products by entering your desired conditions for each item. - Narrow down standard products that match your search criteria in one go. ■ Calculation Mode - Calculate the necessary loads for design and even the lifespan. - Create a quotation request document directly from the calculated content. *For more details, please download the PDF or feel free to contact us.

• Spring

This document provides a clear explanation of the role of tungsten inserts in thread reinforcement. It includes the background and objectives of product development, as well as the appearance and functional features of the product, and introduces additional product functionalities. Furthermore, it explains the effects and evaluations, including a comparison of axial yield strength before and after insert installation, and the evaluation results of vibration tests on insert installation tools. [Contents] ■ Background and objectives of product development ■ Product features ■ Effects and evaluations *For more details, please download the PDF or feel free to contact us.

• Spring

In this document, we introduce the basic knowledge of springs in a way that is easy for beginners to understand, taking into account the points to incorporate into mechanisms. Metal springs can be broadly classified into "carbon steel" and "stainless steel," and we also explain the characteristics of each. Additionally, we provide clear explanations on the shape of springs, design points, and essential considerations during spring manufacturing. [Contents] ■ Materials of springs ■ Shape of springs and design points ■ Essential considerations during spring manufacturing *For more details, please download the PDF or feel free to contact us.

• Spring

This catalog introduces our "Ultra Spring," a standard spring that we handle. The size, which is difficult to grasp with just numerical data, is immediately clear, and it is possible to compare it with the actual spring on hand using a full-size illustration. This catalog makes it easy to select springs that are similar in shape. It includes compression coil springs and tension coil springs, showcasing various outer diameters. Please feel free to download and take a look. [Contents] ■ Limited Edition Supplement: Spring Comic "Selection Edition" ■ Compression Coil Springs ■ Tension Coil Springs ■ Inquiries *For more details, please download the PDF or feel free to contact us.

• Spring

The "Smart Force Sensor" is a capacitive load sensor that combines metal spring manufacturing technology with electronic control technology. It does not require large auxiliary equipment like conventional load cells, simplifying and miniaturizing the detection and signal processing components. Additionally, while the output accuracy is slightly lower, it allows for cost reduction and can be used immediately with standard products. It also features durability, being resistant to damage even under five times the rated overload. 【Features】 ■ Space-saving ■ Cost reduction ■ Time-saving ■ Tough *For more details, please download the PDF or feel free to contact us.

• Sensors
• Other Sensors

In this booklet, we introduce our company as a chronicle of ultra-cool technology. We mention that our products have no discontinued items and that the "Tangless Insert" is our main revenue generator, providing a clear explanation of Helicoil. We also introduce our original standard spring, the "Ultra Spring," and a physical catalog. 【Our Features】 ■ No discontinued products ■ Main revenue generator is the "Tangless Insert" ■ Physical catalog available ■ "Select Spring-kun" allows for online selection ■ Ultra Spring manages two-point load *For more details, please download the PDF or feel free to contact us.

• Spring

This booklet introduces the "Ultra Spring," a spring that consistently maintains stable quality. It clearly explains the adoption of two-point load management, which keeps the strength of the spring constant by managing the two points of the range in which the spring expands and contracts. Additionally, it includes descriptions of the product features such as high quality and high precision, as well as explanations about two-point load management. Please feel free to download and take a look. 【Features】 ■ High quality and high precision ■ Adoption of two-point load management ■ Support for small orders is also possible ■ Order today, delivered by tomorrow *For more details, please download the PDF or feel free to contact us.

• Spring

In this booklet, we introduce the selection method "Ultra Spring," which is perfect for situations where you won't know until you buy and try it. We explain that you can choose springs that fit your products in various ways, such as wanting to "actually hold and choose" or "select based on dimensions and load." We also highlight features that make it easy to choose springs. Please download and take a look. 【Features】 ■ Can be selected in various ways ■ Physical samples are available ■ A variety of selection tools tailored to your needs *For more details, please download the PDF or feel free to contact us.

• Spring

This brochure introduces the "Ultra Spring," which is suitable for solving concerns such as wanting to continue using springs with the same part number. We explain that we still have the springs for machines purchased 30 years ago, ensuring peace of mind for maintenance and production transfers. Additionally, we highlight features such as our commitment to having no discontinued products. Please feel free to download and take a look. 【Features】 ■ Commitment to having no discontinued products ■ Unique standardization of spring sizes and strengths *For more details, please download the PDF or feel free to contact us.

• Spring

This booklet introduces the custom spring automatic estimation network "Erabanekun." It explains that by simply selecting the recommended dimensions that can be processed, you can complete everything from design to estimation and drawings in as little as 5 minutes. The content is designed to be easy to reference when considering implementation, so please take a moment to read it and make use of it. 【Features of Erabanekun】 ■ Just select the recommended dimensions that can be processed ■ Estimation in as little as 5 minutes ■ No registration required to check *For more details, please download the PDF or feel free to contact us.

• Spring

This booklet introduces the "Tongueless Insert," which requires no folding or removal from holes at all. It features a production efficiency increase of approximately 60 times the number of inserts per hour, among other characteristics. We clearly explain the differences from conventional products, so please download and take a look. 【Features of the Tongueless Insert】 ■ No folding or removal from holes required ■ Significantly increased production efficiency ■ Easy for anyone to use ■ Eliminates mistakes and reduces costs *For more details, please download the PDF or feel free to contact us.

• Spring

Tempering is a heat treatment for materials that have completed quenching, aimed at providing the most suitable toughness for the spring, making it the most important process for springs. Therefore, the furnace used for this process must be able to accurately match the desired temperature, ideally within plus or minus 5 degrees. Of course, it is preferable for the temperature distribution within the furnace to be uniform. The changes in mechanical properties due to tempering vary with temperature and holding time, but the influence of time is relatively minor. *For detailed content, please refer to the PDF. For more information, feel free to contact us.*

• Spring

This time, let's study how to remove quenching distortion during the re-baking process. When unraveling yarn that has been knitted once and re-knitting it into something else, the yarn becomes zigzagged due to long-term setting. To remove this yarn's kink, we can use steam generated from a kettle and pass the yarn through it while pulling, which surprisingly straightens the yarn. In other words, in this case, we are straightening it by applying heat and force simultaneously. The application of this method to springs that have developed quenching distortion is known as the press re-baking method. *For more detailed information, please refer to the PDF. Feel free to contact us for more details.*

• Spring

Let's study how quenching distortion occurs. Even without special study, you can clearly understand the results just by conducting an experiment. A flat spring plate of appropriate length is ideal for the experiment. Heat this spring plate to the quenching temperature and cool it from only one side of the plate. For example, if you cool only the bottom side, it will ultimately deform so that the bottom side becomes convex. Let's look at the diagram. First, since the bottom side of the plate is sprayed with water, it will naturally shrink due to thermal contraction. In other words, since the bottom side shrinks, the plate will deform to be convex upwards. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.

• Spring

This catalog introduces the "Wedge Lock System," a locking washer system that originated in Germany. It features a lineup including standard products, the "Combi Washer" which adds a prevention function against bolt loosening, and the "Wedge Lock Nut," which is integrated with a flange nut. Additionally, there are explanations on why these products do not loosen, as well as guidance on usage and precautions. Please feel free to download and take a look. [Featured Products] ■ Wedge Lock Washer ■ Combi Washer ■ Wedge Lock Nut ■ Ring Lock Washer ■ HLK Washer *For more details, please download the PDF or feel free to contact us.

• Other machine elements

The stiffness of a spring is not strictly defined within a certain range. In some cases, it can be even harder. For types like leaf springs or disc springs, the spring stiffness can be increased to nearly 500 on the Brinell hardness scale. It is common to grind the surface of such springs after heat treatment, as using them with the heat-treated surface intact is very dangerous and not permissible. Now, even with such high-quality springs, there are unexpected cases of breakage, which are often due to mistakes during grinding. *For more detailed information, please refer to the PDF. For further inquiries, feel free to contact us.*

• Spring

Today, let's study tempering. Steel that has been fully hardened becomes martensitic, but this is extremely hard, so it must be softened to an appropriate hardness, up to the spring hardness, through tempering. The range of tempering temperatures that can achieve spring hardness is 450 to 540 degrees, and the structure will be in a tempered troostite state. Let’s explain the changes in structure due to tempering in a bit more detail. *The detailed content of the article can be viewed in the PDF. For more information, please feel free to contact us.*

• Spring

The damage from overheating is not just limited to decarbonization. The grain size also increases, and surface oxidation leads to more severe skin roughness. When the grain size increases, the impact value, which refers to resistance to impact, decreases, and fatigue strength also declines. Speaking of the decline in fatigue strength, surface oxidation significantly affects skin roughness. Here, please take another look at the JIS standards for spring steel materials. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

Burning unevenly, that is, the cause of insufficient heating in localized areas, is often due to decarburization. Now, let's study decarburization, which is the main cause of this issue. Decarburization cannot be avoided when heating steel, not just spring steel, to high temperatures. The mechanical properties of steel are proportional to the carbon content, and fatigue strength is well proportional to hardness up to the level of spring hardness. Springs are generally used in a way that bending or torsional stresses are applied, and these stresses act so that the maximum stress occurs on the surface of the spring. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

The components that increase hardenability are manganese, chromium, silicon, and especially boron, which has a significant effect even in small amounts. Now, if we keep adding such special elements, will the hardenability of spring steel increase, allowing us to make springs of any thickness? Not so fast. First, the properties of the steel will change, making it unsuitable for spring steel, and when it comes to thicker materials, shaping becomes very difficult. Being large is not necessarily a good thing. *For more detailed information, please refer to the PDF. Feel free to contact us for more details.*

• Spring

Today, let's try studying along with the experiment. Do you have a round bar made of spring steel? If possible, a diameter of about 25 millimeters would be ideal. Please cut this to a length of 10 centimeters and heat it to the quenching temperature. Once the steel bar is sufficiently heated to the quenching temperature, take it out of the furnace and place one end of the steel bar under a faucet with the spout facing upwards, allowing the water to spray onto it. The water will spread out like an umbrella when it hits the red-hot steel bar. After waiting for a while like this, cool the steel bar until it turns black. What changes will the steel undergo? *For detailed content of the article, you can view it in the PDF. For more information, please feel free to contact us.*

• Spring

Today, let's investigate the changes that occur when quenching. First of all, it is absolutely necessary to heat the steel to a red heat for quenching. The temperature for this is the standard quenching temperature found in the familiar JIS spring steel material table. However, this is an example for heat treatment of tensile test specimens. In reality, whether it is a leaf spring or a coil spring, there is a forming process involved, so the temperature at the end of the forming process corresponds to this temperature. Now, let's consider what significance this quenching temperature has. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

I plan to study the heat treatment that creates spring hardness. That said, since there are new students, let's also study the structure beforehand. Pure iron is surprisingly soft, so it is not useful in the machinery industry. However, if you add a tiny amount of carbon to this iron, it becomes something very useful called carbon steel. The amount of carbon increases in the order of mild steel, medium carbon steel, hard steel, and ultra-hard steel, with the carbon steel for springs (SUP3 and 4) belonging to the ultra-hard steel category. Even in this ultra-hard steel, the carbon content is only about 1.5%. I apologize for the repetition, but let's take another look at the JIS spring steel material table here. *For detailed content of the article, you can view it in the PDF. For more information, please feel free to contact us.*

• Spring

In general, the hardness of a spring falls within a certain range. If it is too soft, it will deform under a small load, and if it is too hard, it will have low toughness and may break. Therefore, there arises a suitable hardness that is neither too hard nor too soft, which is referred to as "spring hardness." To impart this spring hardness to metals, methods such as cold working and quenching and tempering are used. Now, let’s explore specific examples of spring hardness. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

There are two main methods to give spring strength to a spring. One method is to shape the spring and then perform a final quenching and tempering to achieve the appropriate spring hardness. This is generally used for larger dimension springs. The other method is to shape the spring from materials that have already been given spring strength through cold working or quenching and tempering, such as piano wire or oil-tempered wire. Since we already studied the latter method last year with the wire spring series, let's focus on the former method this time. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

There are many materials used for springs. For example, the skis that I played with in the winter mountains until recently can be thought of as board-like springs that slide on the snow, and until not long ago, they were made from wood. However, nowadays, they are made from not only wood but also materials ranging from fiberglass to metal. Let's consider why these materials have been chosen. Since skis are also springs, they must not break or deform immediately when a person, who is the load, stands on them; otherwise, they would be unusable. In other words, we want an elasticity that is suitable for the load. *For more detailed information, please refer to the PDF. For inquiries, feel free to contact us.*

• Spring

Today, let's go to the fishing club's classroom. Steel can be broken down into the blade of a tool and metal. With this method, most things can be deconstructed, and their etymology can be traced. For example, the "forge" in blacksmith comes from the "ka" and "chi" of "kaneuchi" (metal hitting). Additionally, the chisel used by blacksmiths is a "cutting metal," and the hatchet used for cutting wood combines the "na" from "Kusanagi no Tsurugi" (the sword of Kusanagi) and the "ta" from "to cut." Now, how are fishing and springs connected using this method? Look forward to the research results from the fishing club. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.

• Spring

This is the third time for the Hanano Preparatory School's cultural festival. It’s both beneficial and not beneficial, which is what makes it great. If we only talk about things that are beneficial, it becomes like a wedding table speech, and it gets boring. In that regard, our school's haiku club, which I will visit today, may not have much to offer and is quite poor, but it somehow gives off an interesting vibe. *For detailed content, you can view it in the PDF. Please feel free to contact us for more information.*

• Spring

When it comes to bamboo, there is no doubt that Japan has a lot of it, and it is a truly familiar plant, ranging from clotheslines to mahjong tiles. The reason bamboo and elasticity are inseparable is due to its elasticity. Among bamboo products, many utilize this elasticity. For example, fishing rods, bows, hand fans and folding fans, lanterns, bamboo brooms, umbrellas, ski poles, and ladders all make use of elasticity. You might be surprised to hear that ladders utilize elasticity, but only bamboo ladders allow you to climb in a rhythmic manner; wooden or metal ladders do not provide that experience. *For more detailed information, please refer to the PDF. Feel free to contact us for more details.

• Spring

We decided to hold a school festival here to foster a connection between teachers and students. Titled, "Flower's Spring Prep School - School Festival." I wonder what kind of repertoire will emerge from the seriously diligent students. It's a mix of worry and excitement. First of all, the first classroom is very lively, so we've decided to come here today. Neither the president nor the students are studying today. Let's join together with the teachers and take a look at the results of our club activities. *For detailed information, please refer to the PDF. Feel free to contact us for more details.

• Spring

I would like to conclude the long study of spring mechanics with this session. Looking at examples of spring failures, they can be broadly categorized into breakage and deformation. Among these, the causes of breakage are mostly due to manufacturing defects and usage defects, while material defects are relatively minor. A common manufacturing defect is surface defects caused by overheating during heat treatment. In terms of usage defects, deterioration due to corrosion is likely. In the former case, shot peening is effective, while in the latter case, using stainless steel materials is effective. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

Shot peening is a surface treatment. It is very effective for springs made from heat-treated steel wire and springs that are formed from annealed wire and then heat-treated, but it is not as effective for springs made from cold-worked steel wire. This is because the surface of cold-worked steel wire is originally quite smooth. It is said that "a fair complexion hides seven troubles," and indeed, having a fair complexion is the first condition of beauty. Such beauties only need to wash their faces, and there is no need to apply expensive cosmetics. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.

• Spring

Shot peening is a processing method in which countless small steel balls are struck against the surface of springs that have completed shaping and heat treatment. As a result of this processing, the surface of the spring develops numerous indentations and becomes similar to a pearlescent pattern. The formation of these surface irregularities occurs because the steel balls collide with great force against the surface of the steel, causing that area to undergo plastic deformation. *For more detailed information, please refer to the PDF. Feel free to contact us for further inquiries.

• Spring

Even for the same type of wire springs, when the wire diameter is thick and reaches 12 millimeters or more, the manufacturing process changes as follows: ■ Material: Annealed wire ■ Process: Coiling → Cutting → Hardening → Tempering → End face grinding → Setting In some cases, shot peening may be performed after end face grinding, similar to fine wire springs. Now, let's study the common issues of both fine wire springs and thick wire springs, specifically end face grinding and shot peening. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

When you anneal shiny steel wires like piano wire or hard steel wire in the air, they develop a bluish color. Since blue is the color of the bluebird, this is likely why low-temperature annealing is referred to as bluing. This blue color is the result of a layer of iron oxide that forms on the surface of the steel. Although this oxide layer is very thin, it is strong, dense, and has considerable corrosion resistance. However, the colors produced by bluing are not limited to just blue. *For more detailed information, please refer to the PDF. Feel free to contact us for further inquiries.*

• Spring

This document introduces the revolutionary product "Accurate Tungsten Insert," a metal insert. It provides detailed information about its mechanism, strengths, and comparisons with other inserts. Additionally, specific products such as metric-free and metric locking tools are also included, so please take a moment to read through it. [Contents (excerpt)] ■Characteristics ■Part number description ■Metric-free ■Metric locking ■Metric bronze ■Metric taping packaging *For more details, please download the PDF or feel free to contact us.

• Other metal materials

Today, let's study why this annealing and spring wire undergo low-temperature annealing and what effects it has when low-temperature annealed. Now, let's learn what low-temperature annealing is. In heat treatment terminology, there is no term for low-temperature annealing. It is referred to as low-temperature normalization. This is because there is no character for "anneal" in the commonly used kanji. Low-temperature normalization is a method of annealing that involves heating below the transformation temperature to adjust internal stresses. *For detailed content of the article, you can view it in the PDF. For more information, please feel free to contact us.*

• Spring

I also assigned this as homework, but did you understand the differences in quality and performance among various types of spring steel wire? Today, let's try making springs with steel wire. Oh, excuse me, you all are better at spring manufacturing than I am. I would like to learn from you, so let's skip that. By the way, why do the springs made from spring steel wire fit precisely into certain dimensions and specific spring characteristics? *For detailed content, you can view it in the PDF. Please feel free to contact us for more information.*

• Spring

Last time, I lectured on the manufacturing process of spring steel wire. We studied how more effort is put into removing surface defects for higher quality wires. Today, I will discuss how this affects the surface defects of the wire and how it reflects on the price. First, looking at the raw material wire, the higher the carbon content, the more expensive it is. For example, if the price of high carbon steel wire type 6 is set at 100, then that of high carbon steel wire type 4 is 87. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring

You may think that spring manufacturers do not need to know the methods of steel wire production, but since springs depend on steel wire, and the quality of springs is determined by the steel wire, let's study a little bit. ■ Patenting... This is a heat treatment method where wire materials are heated to the hardening temperature and then immediately cooled in molten lead at a constant temperature of about 500 degrees, or in air, to undergo isothermal transformation. *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.

• Spring

I taught you how to read JIS standards, but take another look at the spring steel wire. Indeed, thinner wires have greater tensile strength than thicker ones. The thickest one is the 12 mm "spring carbon steel oil-tempered wire," which has a tensile strength of 120 kg. Looking at it this way, we can define spring steel wire as having a diameter of 12 mm or less and a tensile strength of 120 kg or more. Why is strong steel wire used for springs? It is because the cross-sectional shape is uniform and the material length is long, making it convenient to mass-produce springs with consistent characteristics. *For more detailed information, please refer to the PDF. Feel free to contact us for more details.

• Spring

Today, let's take a closer look at the properties of wire rods, which are the parent material of steel wire. We will omit the discussion on wire rods for welding electrodes, but since there are students at our school who may advance to "Twist University" in the future, we will touch on soft steel wire rods and primarily explain hard steel and piano wire rods. For new students who find the JIS numbers and symbols difficult and don't know where to look, let me explain how to search for them. *You can view the detailed content of the article in the PDF. For more information, please feel free to contact us.*

• Spring

Now that the new students have arrived, we will temporarily pause our studies on heat treatment and start with materials for springs, beginning with steel wire. I feel sorry for the new students, but if any unfamiliar terms come up during the lecture, please ask the seniors from the second-year repeaters for help. It’s fine to jump straight into spring steel wire, but remember the saying, "Spring days are long, and haste makes waste." I will digress a bit, but it would be beneficial to introduce the various types of wires, as it will help in understanding spring steel wire. *For detailed content, please refer to the PDF. For more information, feel free to contact us.*

• Spring

Today, in the sense of a final review, let's study the defects that are likely to occur during heat treatment. The first thing to be cautious about is overheating. This occurs when steel is unnecessarily heated to a temperature above the specified level, which not only damages the fuel but also accelerates the wear of the furnace. Overheated materials are prone to decarburization, oxidation, and grain coarsening, leading to cracking and making the mechanical properties more brittle. In the heat treatment of springs, there is also a chance of overheating during shaping and quenching heating. How can we prevent this? *For detailed content of the article, please refer to the PDF. For more information, feel free to contact us.*

• Spring