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Stem Grinding Machine

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Machine Application

Applicable Industrial:

Automobile parts, damper, steering system, oil pressure valve element, aerospace components, medical application, precision bearing, high-precision machine parts, electronics, cutting tools, oil pressure and pneumatic system.


Applicable products:

Starting shaft, transmission shaft, balance shaft, bolt, transmission parts, universal joint, ball screw, bearing components, bearing ring, camshaft, pinion shaft, valve, rolling element, axis parts, etc.


Description of the grinding principles:

The grinding method of the centerless grinder does not require jacking the center hole, but supporting the workpiece with the carbide blade instead.




Machine Feature

1) Dresser 

The dressing device is made of high-grade cast iron via precision grinding and scarping. the angle of dressing device on the control wheel can be adjusted(±5°) during grinding according to the nature of the workpiece and actual requirements, so as to ensure a good contact surface between the workpiece and control wheel, and to achieve optimal straightness and surface precision. 


2) Spindle

The spindle of the grinding wheels and control wheels are made of high quality alloy steel that has under-gone normalization, tempering, high frequency and subzero treatment before the precision grinding, in order to improve product stability, prevent deformation and prolong service life.


3) Bottom slide

Shaped slide rails and double wedge auxiliary guides are used for the bottom slide. the double ^-shaped slide rails have undergone high-frequency hardening treatment and precision grinding, which can block out mud, while offering a lightweight and precise structure.


4) Machine bed

The centerless grinding machine adopts a high-grade cast iron lathe bed, its internal stress is eliminated through appropriate heat treatment to ensure the durability of the machine


Processing Parameter

Grinding parameter of engine valve

Specification  Stem grinding machine  CLG-600
After process Rough grinding  Semi-finish grinding  Finish grinding 
Grinding allowance 0.25-0.3 mm 0.10-0.15 mm  0.05-0.08 mm 
Squareness  0.012 mm  0.008 mm  0.003 mm 
Roundness  0.01 mm  0.007 mm  0.003 mm 
Roughness  Ra 1.2 Ra 0.8  Ra 0.32
Size tolerance  ±0.02 mm  ± 0.01 mm  ± 0.003 mm 

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  • Tel: +86-512-66294696
  • Phone:  +86-18136977277
  • E-mail: sales@tzjmachine.com
  • Add: No.20, Guangdian Road, Guangfu Town, Wuzhong District, Suzhou, China

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