Precise dressing method of molding grinding wheel of grinding big-diameter bearing and flexible device thereof

A technology for forming grinding wheels and large diameters, which is applied in the field of bearing manufacturing, can solve the problems of small matching of grinding wheel dressing devices and low precision of grinding wheel dressing, and achieve the effects of avoiding step precision requirements, high cost performance, and reducing manufacturing requirements

Inactive Publication Date: 2010-05-12
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a precision dressing method and a flexible device for forming a grinding wheel for grinding large-dia

Method used

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  • Precise dressing method of molding grinding wheel of grinding big-diameter bearing and flexible device thereof
  • Precise dressing method of molding grinding wheel of grinding big-diameter bearing and flexible device thereof
  • Precise dressing method of molding grinding wheel of grinding big-diameter bearing and flexible device thereof

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Embodiment 1

[0024] A precision dressing method for forming grinding wheels for grinding large-diameter bearings. The dressing track of the diamond pen is inserted according to the axial (X direction) and radial (Y direction) feed movement of the grinding wheel and the tangential (Z axis) swing around the grinding wheel. Complementary synthesis, the synthesis movement is controlled by PLC.

[0025] Such as figure 1 As shown in the figure, a flexible device supporting the precision dressing of a large-diameter bearing forming grinding wheel includes a servo drive motor 1, a harmonic reducer 2, a coupling 3, a bearing 4, a rotating shaft 5, an adjusting screw 7, a dial 8, and a support seat 9. The middle part of the rotating shaft 5 is equipped with an adjusting screw 7, the front end of the adjusting screw 7 is equipped with a diamond pen 6, and the rear is equipped with a dial 8. The lower part of the harmonic reducer 2 is connected to the rotating shaft 5 through the coupling 3, and the ...

Embodiment 2

[0053] The requirement of this embodiment is to adopt the configured grinding wheel dressing device of the ball bearing inner ring groove grinder (model is 3MB1330A) to grind a ball bearing with a diameter of 300mm and a curvature of the raceway arc of 1 / 60, so as to realize the device and Embodiment 1 is the same, and its main calculation and operation steps are as follows:

[0054] 1) Determine the single-step feed rate of the X-axis, let ΔX=1μm;

[0055] 2) Calculate the single-step feed of the Y axis, ΔY=ΔX / curvature of the raceway arc=60μm;

[0056] 3) Calculate the Z-axis swing angle θ, θ=arctg(ΔX / ΔY)=arctg(1 / 60)=arctg(0.0167)≤50″8′;

[0057] 4) Calculate the Z-axis swing radius R, R=ΔY2 / ΔX+ΔX=60 2 / 1+1=3601μm=3.601mm;

[0058] 5) Estimate the dressing error ΔB of the forming grinding wheel, ΔB=2RSin 2 (θ / 4)=2(3601)Sin 2 (50″8′ / 4)≤0.103μm;

[0059] 6) Check the dressing accuracy of the forming grinding wheel, that is, when ΔB≤T B / 3,T B is the contour tolerance o...

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Abstract

The invention relates to a precise dressing method of molding grinding wheel of a grinding big-diameter bearing and a flexible device thereof. The precise dressing method of the molding grinding wheel is that the dressing motion track of a diamond pen (6) is synthetized through the interpolating and feeding movement along the axial direction (X shaft) and the radial direction (Y shaft) of the grinding wheel. The flexible device is mainly composed of a servo driving motor (1), a harmonicwave reducer (2), a coupler (3), a bearing (4), a spindle (5), an adjusting screw rod (7), a dial (8) and a support base (9), wherein the diamond pen (6) is installed on the spindle (5) and the distance (R) of the diamond pen point opposite to the swing center of the spindle (O-O) is adjusted via driving the adjusting screw rod (7) by the dial (8); namely, the swing radius of the diamond pen is formed and the servo motor drives the spindle (5) to drive the diamond pen to swing along the Z shaft; and the flexible device is installed on the workbench (10) and is driven by the workbench to realize the interpolating and feeding movement along the X shaft and Y shaft, and the synthesizing movement of the X, Y and Z shafts are controlled by PLC. The invention can solve the problems of low dressing precision of the grind wheel, low matching of the dresser of the grind wheel in prior art.

Description

technical field [0001] The invention belongs to the field of bearing manufacturing, and in particular relates to a flexible device and method for precision trimming of a forming grinding wheel for grinding large-diameter bearings. Background technique [0002] In recent years, with the rapid development of my country's automobile, railway speed-up, rail transit, etc., the demand and performance requirements for key and general components such as bearings are also getting higher and higher. However, due to the lack of advanced bearing manufacturing technology and special equipment with independent intellectual property rights in our country, the produced bearings still cannot meet the international high-precision or high-performance bearing standards. Most of the bearing manufacturing companies supporting railway locomotives are Sino-foreign joint ventures. For example, Nankou SKF Railway Bearing Company is a Sino-Swiss (Swiss SKF) joint venture, Yinchuan Fuanjie Bearing Comp...

Claims

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Application Information

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IPC IPC(8): B24B53/06B24B53/12
Inventor 李蓓智吉启维罗坚朱江良邬舟平
Owner DONGHUA UNIV
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