中村製作所 List of Products and Services

The 'Surface Grinding Process Using a Horizontal Axis Rotary Grinding Machine' involves grinding the reference surfaces, specifically the end faces and both end surfaces, as the first step when high-precision machining of flanged round objects is required. The reference end face, when processed using a magnetic chuck, is a crucial point to ensure that no deformation occurs during cylindrical grinding and internal grinding due to clamping with chucks and other fixtures. Additionally, the NC horizontal axis rotary grinding machine is suitable for high-precision machining of round objects and can also perform grinding with a taper of a few microns to facilitate easy assembly of the items. Recently, it has shown particular effectiveness in machining titanium materials, contributing to reduced processing time and improved precision for this difficult-to-cut material. [Features] - Materials: S45C, SUS304, A7075, SKD11, Titanium 64, etc. - Industries: Automotive parts prototyping, machine tool parts, semiconductor manufacturing equipment parts, etc. - Processing Machine: NC horizontal axis rotary grinding machine - Processing Accuracy: Flatness and parallelism of 0.001 to 0.005 - Work Size: Φ500×200L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Wafer processing/polishing equipment

The "Base Bottom" is an industrial machine part that is active in the automotive (prototype), robotics, and production equipment industries. It is machined with high precision by cutting from solid material and processing distortions through numerous steps. 【Features】 ■ Material: FCD400 ■ Industries: Automotive (prototype), machine tools, robotics ■ Processing machines: Vertical machining, horizontal machining, general-purpose lathes ■ Precision: Parallelism 0.01, perpendicularity 0.01 ■ Work size: 160×160 *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

In the "Vertical Grinding Process of Large Spindle Sleeves," we process castings for the machine tool industry using vertical lathes, vertical grinding machines, and horizontal machining, achieving a precision of 0.005 for coaxiality, concentricity, parallelism, roundness, and perpendicularity. We also process many similar products related to construction machinery parts and conduct quality assurance using three-dimensional measuring machines. 【Features】 ■ Material: FC300 ■ Industry: Machinery and Production Equipment - Machine Tools ■ Processing Machines: NC Lathe, Horizontal Machining, Vertical Grinding ■ Processing Precision: Coaxiality, Concentricity, Roundness, Parallelism, Perpendicularity all at 5/1000 ■ Work Size: Φ400×530L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

An article about our company was published in the February 2016 issue of "Production Goods Marketing." I never imagined that I would be featured in a magazine I used to read over a decade ago. I believe that the connections I've made and my continuous efforts have led to this valuable opportunity. The content summarizes the journey from my late father to my generation. It includes episodes about our company motto, "We cut everything except air," as well as the internal reforms and initiatives we've undertaken from a few years ago to the present. The article is designed to be understandable even for those who are learning about Nakamura Manufacturing for the first time, so please feel free to take a look. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

The "No. 30 Spindle" requires cutting processing with a vibration-damping bar due to its small and deep inner diameter for high-speed rotation use. If there is significant deformation from carburizing and quenching, a larger replacement should be made, and after processing with hard turning, precision finishing will be done through grinding. 【Features】 ■ Material: Steel (SCM) ■ Industry: Machine tools ■ Processing Machines: NC lathe, vertical machining center, horizontal machining center, cylindrical grinding machine, internal grinding ■ Processing Accuracy: 0.005mm ■ Work Size: Φ50×350L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

In "Reference Surface Grinding," when high-precision machining of flange-type round objects is required, the first areas to be ground are the reference surfaces, which are the end face and both end surfaces, using a surface grinder. The reference end face is also important when machining with a magnetic chuck to prevent deformation during cylindrical grinding and internal grinding. Furthermore, while an NC horizontal axis rotary grinder is more suitable for achieving higher precision than a surface grinder, it allows for processing multiple items at once when there are many pieces, so it is used according to the situation. 【Features】 ■ Materials: S45C, SUS304, A7075, SKD11, 64 Titanium, etc. ■ Industries: Automotive parts prototyping, machine tool parts, semiconductor manufacturing equipment parts, etc. ■ Machining Equipment: Surface grinder ■ Machining Accuracy: Flatness and parallelism of 0.001 to 0.005 ■ Work Size: Φ250×150L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Wafer processing/polishing equipment

In "Vertical Grinding (Magnetic Chuck Processing)," when dealing with workpieces that are difficult to chuck and require high precision, the end face is mounted using a magnetic chuck for processing. There is no distortion due to chucking pressure, and processing can be done with high precision, achieving roundness of 0.001. 【Features】 ■ Material: S45C ■ Industry: Machine Tools ■ Processing Machines: NC Lathe, Vertical and Horizontal Machining, Vertical Grinding Machine ■ Processing Precision: Coaxiality, Perpendicularity, and Cylindricity all at 0.005 ■ Workpiece Size: Φ300×350L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

This is an introduction to the "large spindle for machine tools" made from round bars manufactured by Nakamura Seisakusho. It is a spindle for a 5-axis machining center with a size of 50, featuring a two-face clamping specification. The long size is Φ150×1100L. It includes finishing processes such as taper grinding. 【Features】 ■ Material: Steel (SCM) ■ Industry: Machinery, Production Equipment, Machine Tools ■ Processing Machines: NC Lathe, Horizontal Machining Center, Cylindrical Grinding Machine ■ Processing Accuracy: 0.005mm ■ Work Size: Φ150×1100L *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines

The "Surface Roughness Measurement" can output the roughness of machined and ground surfaces as numerical data. Without judging visually whether the surface roughness meets the specifications indicated on the drawings, it can be assessed numerically. We provide inspection data to manufacturers in various industries, ensuring high reliability of the data. 【Features】 ■ Materials: Iron, Titanium, Aluminum, etc. ■ Industries: Automotive parts prototyping, Machine tools, Construction machinery, etc. ■ Measurement accuracy: Ra, Ry, Rz at 0.1μ (micron) units *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract measurement

"High-precision polished products" are manufactured by simultaneous grinding of the outer and inner diameter end faces using a vertical grinding machine in a temperature-controlled room. A comparative measurement device with precision comparable to a three-dimensional measuring machine is used to suppress dimensional errors caused by measurement methods. Since a magnetic chuck or flat plate fixture is used, there is no deformation after processing due to clamping pressure. 【Features】 ■ Coaxiality and concentricity of 0.003 or less ■ Simultaneous grinding of outer and inner diameter end faces ■ Suppression of dimensional errors ■ No deformation due to clamping pressure after processing *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "inner diameter and outer diameter taper machining" using a vertical grinding machine with one chucking. High-precision grinding is possible as we can process the inner and outer diameters simultaneously. We accommodate sizes of φ300×550L. 【Features】 ■ Simultaneous grinding of inner and outer diameters ■ Excellent coaxiality and concentricity ■ High precision of less than 0.003 *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "polishing finishing processing" using vertical grinding machines. We can achieve high-precision finishing with an outer diameter of φ600 and an inner diameter of φ500, including H6 tolerances, a surface roughness of 1.6S, and coaxiality of 0.005. Quality control is also conducted using three-dimensional measuring instruments and surface roughness measuring devices. 【Features】 ■ High-precision finishing processing with vertical grinding machines ■ Quality control with three-dimensional measuring instruments and surface roughness measuring devices ■ Work size: φ600×100L *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "horizontal machining" of aluminum castings. We also manufacture the necessary processing jigs in-house according to the shape. *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "chuck taper grinding" using vertical grinding machines. By grinding the inner and outer diameter end faces simultaneously, we achieve high-precision processing. *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "cooling bimetallic bonding" with S54C and brass. Post-bonding polishing is also possible, making it suitable for the production of machine tool parts. 【Features】 ■ Machines Used: NC lathe, horizontal machining center, cylindrical grinding ■ Processing Accuracy: 10 microns ■ Work Size: φ300×40L *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

At Nakamura Manufacturing, we perform "carburizing hardening and grinding processing" using SCM415 material. In addition to high-precision grinding after carburizing hardening, buff polishing with a surface roughness of 0.8S is also possible. We can also accommodate groove grinding processing for O-ring grooves, which are prone to runout. 【Features】 ■ Carburizing hardening ■ High-precision grinding processing ■ Buff polishing finish with a surface roughness of 0.8S ■ Groove grinding processing for O-ring grooves *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

The "high-speed rotating spindle head" demonstrates precision with a coaxiality, perpendicularity, and parallelism of 0.003 millimeters at a specification of 30,000 RPM. *For more details, please refer to the PDF document or feel free to contact us.*

• Wafer processing/polishing equipment

Nakamura Manufacturing Co., Ltd. specializes in high-precision round machining and conducts integrated production in-house from medium to large sizes. Here, we introduce a handbook summarizing our technology! 【Q&A Content】 ■ What is the maximum size and quantity for processing? ■ Can you handle short delivery times with machining from solid materials? ■ Is urgent processing possible? ■ Can you assist with can manufacturing and assembly work? ■ Is it possible to recreate items without drawings by examining the actual product? ■ Can you provide consultation for pressed products, mold parts, castings, forgings, etc.? ～☆ We are currently offering a free 'Q&A Technical Handbook' that answers various questions and inquiries☆～ *For more details, please download the PDF or feel free to contact us.

• Processing Contract
• Other machine elements
• Other processing machines