When the grinding machine is grinding, if there are vibration lines or spiral marks on the surface of the ground product, the reasons are various, and can be found according to the following conditions:
1: The method of trimming the cutting disc is not appropriate.

The gold pen should be kept sharp and the particles are not loose. The liquid should be sufficient when trimming, and the finishing volume should not be too large.

2. Is the diamond pen loose?

If the diamond pen of the modified cutting disc is loose, the surface of the aluminum abrasive cutting disc will naturally be uneven, and the surface quality of the ground product is inevitable.


3: The grinding feed rate should be reasonably selected according to the workpiece allowance.


Remedy: The grinding feed should be selected to keep appropriate with the workpiece allowance, especially the workpiece allowance during rough grinding.

4: The straightness error of the bed rail or the 14 inches cutting disc guide rail in the horizontal plane is large, which affects the trimming track.


Remedy: Gold steel drill installation position, try to make the trimming position the same as the grinding position.

5: The cutting wheel spindle bearing has a large gap, which reduces the stiffness of the dynamic effect.

Remedy: Check the bearing clearance and adjust it when it is too large.

6: The head and tail frame is poor in rigidity, and the supporting tip hole of the workpiece is in contact with the small end of the tip to produce poor bearing rigidity.
Grinding of the top of the rotatable spindle can be used to adjust the head frame to zero and the tailstock sleeve has excessive clearance to repair it.

7: The workpiece material does not match the cutting disc so that the cutting disc cannot effectively cut the workpiece and is heavily passivated.

Remedy: The workpiece material must be reasonably matched to the material of the cutting disc: eg the workpiece material is nickel, chrome steel, carburized steel, tool steel, alumina cutting disc, hardness KH; general steel hardness LJ, cast iron, brass, etc. The lower strength material is selected from black silicon carbide. Green carbide is used for cemented carbide.
This material cutting disc should match the superhard cutting disc.
8. Is the spindle speed of the cutting disc spindle and the workpiece spindle stable?
Check whether the speed of the spindle of the cutting disc for stainless steel and the spindle of the workpiece are stable: when diagnosing the spindle speed, let the spindle viewed to a speed, you can check whether it is changing from the diagnostic parameters of the spindle controller. How many. It is also possible to measure the speed with a tachometer. If the spindle speed is unstable, the surface of the ground workpiece will be warped.
9. Is there any vibration in the cooling fan of the cutting spindle and the workpiece spindle motor?
The vibration of the main motor's cooling fan directly affects the surface quality of the ground product.
10, the inspection of the grinding head
Measure the diameter jump and axial turbulence of the grinding head. If the standard exceeds the standard, technical measures should be taken. If the diameter of the grinding head exceeds the standard value, the viscosity of the grinding head spindle oil can be increased without changing the grinding head to alleviate the influence of the grinding head disadvantage on the grinding product.
11, bedside box finger and self-positioning board
In the grinding of the workpiece, if the head of the headstock has a relative displacement with the ground workpiece; if the self-aligning plate of the headstock slides intermittently during the rotation of the workpiece, the surface quality of the ground workpiece will be very high. Great impact.