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Grinding machine Product List

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Fully Automatic Internal Grinding Machine 'SIG-S II'

Fully Automatic Internal Grinding Machine 'SIG-S II'

Introducing a chuck type for automotive parts processing that can accommodate a wide range of workpieces!

The "SIG-S II" is a compact, environmentally friendly high-precision and high-efficiency internal grinding machine. It features a hydraulic-free design and a table ball screw lubrication-free system. The combination of block-built units allows for versatile processing. It is suitable for workpieces such as gasoline and diesel injection nozzles and pumps, with processing specifications using a diaphragm chuck spindle. 【Features】 ■ Chuck type for automotive parts processing ■ Versatile processing possible with a combination of block-built units ■ Table ball screw lubrication-free ■ Hydraulic-free ■ Main body dimensions: 1,550mm(W) x 1,270mm(D) x 1,900mm(H) *For more details, please refer to the PDF document or feel free to contact us.

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Fully Automatic High Precision Internal Grinding Machine 'SIG-Evo1s/2s'

Fully Automatic High Precision Internal Grinding Machine 'SIG-Evo1s/2s'

Expanding the range of workpieces through dual-axis conversion! A high-precision, high-efficiency internal grinding machine based on a new concept.

The "SIG-Evo1s/2s" is a fully automatic high-precision internal grinding machine that pursues high processing accuracy and productivity. The "SIG-Evo2s" is equipped with two grinding spindle axes to accommodate complex machining. It employs oil hydrostatic guidance for the spindle and grinding spindle table, enabling high-speed and high-precision position control with linear motor drive. Furthermore, with 2-axis linear interpolation control, it can handle tapered surfaces at arbitrary angles, making setup work easier. 【Features】 ■ Chuck type for automotive parts processing ■ Oil hydrostatic guidance for the spindle and grinding spindle table ■ High-speed and high-precision position control with linear motor drive ■ Built-in motor type oil hydrostatic and dynamic pressure hybrid bearing spindle ■ Main body dimensions: 1,600mm(W) × 1,700mm(D) × 1,400mm(H) *For more details, please refer to the PDF document or feel free to contact us.

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Fully Automatic Small Internal Grinding Machine 'SG2-C/R'

Fully Automatic Small Internal Grinding Machine 'SG2-C/R'

Equipped with a servo motor-driven two-arm loader for the chuck spindle, achieving high-speed self-feeding!

The "SG2-C/R" is a space-saving internal grinding machine that inherits the "SG1-IB" and is capable of mounting a chuck spindle. It supports various machining processes, such as sheet surfaces, with 2-axis interpolation control. The grinding wheel spindle can be mounted to rotate from 80,000 to 180,000 RPM. Additionally, it accommodates various applications such as a front sizing device and an AE sensor-equipped dressing device, achieving significant miniaturization compared to conventional chuck-type machines. 【Features】 ■ Chuck and centerless for automotive parts processing ■ Equipped with a high-precision chuck spindle ■ Grinding wheel spindle can be mounted to rotate from 80,000 to 180,000 RPM ■ Equipped with a servo motor-driven 2-arm loader for high-speed feeding ■ Main body dimensions: 850mm(W) × 1,162(D) × 1,580(H) *For more details, please refer to the PDF document or feel free to contact us.

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【Small-diameter machining & productivity improvement】General-purpose CNC internal grinding machine *Test machining available

【Small-diameter machining & productivity improvement】General-purpose CNC internal grinding machine *Test machining available

We offer two models: the STG-3NX, which can achieve a minimum inner diameter finish of 0.3mm, and the STG-6N, which accommodates inner diameters up to 100mm. *Short delivery times available.

The "STG Series" is a versatile internal grinding machine equipped with a unique high-speed, high-precision, and high-rigidity spindle mounted on a grinding wheel shaft, achieving improved processing accuracy and productivity for inner diameter finishing. There are two models in the lineup: the "STG-3NX," which comes standard with a 4-inch chuck, and the "STG-6N," which is equipped with a 6-inch chuck. Both models are compact in size, allowing for space-saving installation. 【Features】 <STG-3NX> A compact versatile internal grinding machine that significantly improves the accuracy and productivity of small diameter hole finishing. - Capable of grinding inner diameters as small as φ0.3mm. - Standard equipped with a scroll chuck that can handle small-batch production of various types. - Suitable for chuck collets, mold components, ring gauges, carbide parts, ceramic parts, magnets, etc. <STG-6N> A compact versatile internal grinding machine that achieves precision and high-efficiency processing for a wide variety of products with outer diameters up to φ160mm. - Compatible with a wide range of workpieces with outer diameters up to φ160mm. - Compatible with FANUC's FIELD system. - Suitable for gears, mold components, ring gauges, chuck collets, hydraulic parts, automotive parts, etc. *For more details, please refer to the documentation.

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【Basic Knowledge】What is a Grinding Machine?

【Basic Knowledge】What is a Grinding Machine?

Processing while shaving off the surface! It slowly shaves off a little at a time, achieving high precision.

A "grinding machine" is equipment used to process workpieces by pressing a high-speed rotating grinding wheel against the material to be machined. Since it processes by grinding away the surface, it takes longer to achieve the desired shape compared to cutting processes that involve cutting the material. However, because it grinds slowly and gradually, it can achieve high precision. It is commonly used in the finishing process to enhance surface accuracy after shaping the workpiece into the desired form through cutting processes. 【Features】 ■ Presses a high-speed rotating grinding wheel against the material to be processed ■ Used in the finishing process to enhance surface accuracy ■ Manual grinding machine: Small, handheld for processing materials ■ Machine grinding machine: Installed in factories such as manufacturing industries *For more details, please refer to the related links or feel free to contact us.

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Types of Grinding Machines

Types of Grinding Machines

The surface grinding machine consists of a table and a grinding wheel! It affects the shape of the workpiece and the precision during processing.

The grinding machine can be classified according to the purpose of processing and the shape of the material to be processed. The "surface grinding machine" is primarily equipment for performing surface grinding, and it can be used for various types of grinding depending on the direction of movement of the workpiece and the way the grinding wheel is applied. In addition, there are "internal grinding machines" for performing internal grinding, "cylindrical grinding machines" that rotate the grinding wheel in the opposite direction to the workpiece, "centerless grinding machines," and "tool grinding machines." [Types of Grinding Machines (Excerpt)] ■ Surface Grinding Machine - Achieves both high dimensional accuracy and high precision surface roughness - Capable of achieving high flatness and parallelism on both sides of the workpiece ■ Internal Grinding Machine - Standard type: Both the workpiece and the grinding wheel are rotated while the grinding wheel is moved back and forth - Planetary type: The workpiece is fixed while only the grinding wheel rotates *For more details, please refer to the related links or feel free to contact us.

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The performance of internal grinding machines is being sought for improvement across various industries.

The performance of internal grinding machines is being sought for improvement across various industries.

At Seiko Instruments, we have provided solutions by addressing our customers' needs.

Internal grinding is a type of grinding process that involves grinding the inner surface of cylindrical workpieces. In various industries such as automotive, home appliances, and information devices, where high functionality and complex internal structures are advancing, there is a demand for small, high-precision parts. In internal grinding used for processing these parts, a balance between high processing accuracy and productivity is desired. Additionally, beyond processing accuracy, the equipment itself for internal grinding machines must also meet various requirements. [Challenges] - Balancing high processing accuracy and productivity - The equipment for internal grinding machines must also respond to various demands - Space-saving and cost-effective equipment - Consideration for the environment - Improvement of processing accuracy and efficiency *For more details, please refer to the related links or feel free to contact us.

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[Case Study] Seiko Instruments' Internal Grinding Machine Solves Challenges <Precision Machined Parts>

[Case Study] Seiko Instruments' Internal Grinding Machine Solves Challenges <Precision Machined Parts>

We will introduce a case that enabled a reduction in lap processing time by improving surface roughness!

We would like to introduce a case where Seiko Instruments Inc. solved challenges through test processing. In the case of precision machined parts, a lapping process may be required in the post-process of inner surface grinding. To shorten the time required for processing, it is necessary to machine at a precision close to that of the final finishing lapping process during the inner surface grinding stage. By improving roundness, cylindricity, and surface roughness, the lapping process can be simplified. 【Case Overview】 ■Challenges - Shorten processing time - Machine at a precision close to that of lapping ■Results - Simplified lapping process - Achieved improvement in surface roughness in addition to shape accuracy *For more details, please refer to the related links or feel free to contact us.

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[Processing Example] Alumina General-purpose Grinding Machine CNC Internal Grinding Machine STG-3N

[Processing Example] Alumina General-purpose Grinding Machine CNC Internal Grinding Machine STG-3N

Introduction of a machining case where processing time was reduced by 50% and cylindricity was improved.

We would like to introduce a case study of "alumina" processing conducted by our company. In the customer's equipment, the roundness was approximately 4μm with a processing time of 2400 seconds, so we proposed a processing method to improve the roundness in about half the processing time. Compared to before implementation, we achieved a 50% reduction in processing time, a surface roughness of Ra 0.5μm or less, and a roundness of 1.0μm or less. 【Case Overview】 ■Processing dimensions: φ3.1mm×22.5mm ■Material: Alumina ■Features: Special material, long hole (L/D=6.4) ■Model: STG-3N ■Spindle: M15H-T (Max 150,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • Other processing machines

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[Processing Example] Die General-purpose Grinding Machine CNC Internal Grinding Machine STG-6N

[Processing Example] Die General-purpose Grinding Machine CNC Internal Grinding Machine STG-6N

Achieving roundness of 0.8μm or less! Here are examples of cases where we proposed our spindles.

We would like to introduce a case study of "dice" processing that we conducted. In the customer's equipment, increasing the spindle rotation speed led to unstable precision, creating distrust in the spindle. Therefore, we proposed that our spindle maintains stable precision even at maximum rotation speed. Compared to before implementation, we achieved a 50% reduction in processing time and roundness of less than 1.0μm. 【Case Overview】 ■Processing dimensions: φ7.8mm×7mm ■Material: Carbide ■Features: Special outer diameter ■Model: STG-6N ■Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • Other processing machines
  • Other molds

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[Processing Example] Die <Difficult-to-Cut Material> CNC Internal Grinding Machine STG-3N

[Processing Example] Die <Difficult-to-Cut Material> CNC Internal Grinding Machine STG-3N

As a result of the introduction, processing time reduced by 80%! Introducing a case study of die processing featuring difficult-to-cut materials.

We would like to introduce a case study of the processing of "dice" that we conducted. To shorten processing time, we introduced the "STG-3N." The processing dimensions are φ5mm×3mm, and the material used is carbide nib. As a result of the introduction, processing time was reduced by 80% compared to before, and the surface roughness was less than Ra0.2μm. 【Case Overview】 ■ Processing dimensions: φ5mm×3mm ■ Material: Carbide nib ■ Features: Difficult-to-cut material ■ Model: STG-3N ■ Spindle: M11H-TM (Max 110,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • Dice
  • Processing Contract

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[Processing Example] Sleeve <Difficult-to-Cut Material> CNC Internal Surface Grinding Machine STG-3N

[Processing Example] Sleeve <Difficult-to-Cut Material> CNC Internal Surface Grinding Machine STG-3N

We will introduce examples of sleeve processing, which has reduced processing time by 80% compared to before implementation!

We would like to introduce a case study of machining sleeves (ceramic parts). The background for the introduction was the need to reduce processing time and improve shape accuracy and surface roughness. Compared to before the introduction, processing time was reduced by 80%, and the surface roughness is below Ra0.4μm, with roundness below 0.35μm. 【Case Overview】 ■ Machining dimensions: φ12mm×8mm ■ Material: Ceramics (SiC) ■ Features: Difficult-to-machine material ■ Model: STG-3N ■ Spindle: M11H-T (Max 110,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • Ceramics
  • Other machine elements

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[Processing Example] Gear CNC Internal Grinding Machine STG-6N

[Processing Example] Gear CNC Internal Grinding Machine STG-6N

We will introduce a case study of gear processing that has reduced processing time by 80% compared to before implementation!

We would like to introduce a case study of machining gears (mechanical components). The background for the introduction was the need to reduce machining time. Compared to before the introduction, machining time has been reduced by 80%, and the surface roughness has achieved a result of Ra0.1μm or less. 【Case Overview】 ■ Machining dimensions: φ40mm × 37mm ■ Material: SCM415 ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • gear
  • Processing Contract

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[Processing Example] Collet CNC Internal Grinding Machine STG-6N

[Processing Example] Collet CNC Internal Grinding Machine STG-6N

A case where the extensive rework within the factory significantly reduced the customer's work time, which had been a source of frustration.

Here are some examples of processing with Colette (tool). In the customer's owned equipment, there was significant dimensional variation in the workpieces after processing, making it difficult to control processing accuracy. This required rework for corrections, consuming a lot of time. After implementation, the customer's working time was significantly reduced, with processing time shortened by 70% and surface roughness achieved at Ra0.1μm or less. 【Case Overview】 ■ Processing dimensions: φ30mm×20mm ■ Material: Carbide ■ Features: Slits on the processed surface ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

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  • Other machine elements
  • Processing Contract

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[Processing Example] Ring Gauge CNC Internal Grinding Machine STG-6N

[Processing Example] Ring Gauge CNC Internal Grinding Machine STG-6N

Improvement of product shape accuracy and reduction of cycle time are the background for the introduction! We will also introduce the effects of the implementation.

We would like to introduce a case study of the processing of "ring gauges" that we conducted. The processing dimensions are φ50mm × 20mm, and the material is SKS31. The background for the introduction was to improve product shape accuracy and reduce cycle time. After implementation, the surface roughness was reduced to Ra 0.1μm or less, and the roundness was less than 0.3μm, resulting in a 60% reduction in processing time compared to before implementation. 【Case Overview (Partial)】 ■ Background: Improvement of product shape accuracy, reduction of cycle time ■ Effects of Implementation - Surface roughness Ra 0.1μm or less - Roundness 0.3μm or less - Processing time reduced by 60% (compared to before implementation) *For more details, please refer to the related links or feel free to contact us.

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  • Processing Contract

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