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Device and method for correcting quenched bearing outer ring

A bearing outer ring and rear bearing technology, which is applied in the correction of ellipse and warpage, and in the field of devices for correcting the quenched bearing outer ring. It can solve the problems of slowing down production progress, wasting production costs, and low equipment utilization, and achieves improvement. Improve production progress, improve calibration efficiency, and solve time-consuming and labor-intensive effects

Active Publication Date: 2020-09-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing technology can control heat treatment deformation to a certain extent, the operation is cumbersome and time-consuming, and tempering twice is required, which is time-consuming, laborious and wastes production costs, which will directly slow down the production progress, resulting in long production cycles and low equipment utilization.

Method used

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  • Device and method for correcting quenched bearing outer ring
  • Device and method for correcting quenched bearing outer ring
  • Device and method for correcting quenched bearing outer ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The overall structure of the device of the present invention is as figure 1 As shown, the ellipse correction mechanism is located at the lower part of the frame and is fixedly installed on the frame, and the warpage correction mechanism is located above the ellipse correction mechanism and is fixedly installed at the upper part of the frame. The relevant movements of the ellipse correction mechanism and the warpage correction mechanism are all controlled by computer and electric cylinder with high precision.

[0052] Rack of the present invention such as figure 2 As shown, the frame includes a top plate 1, a warpage correction guide rail 2, a base 3, and a horizontal adjustment mechanism 4. The warpage correction guide rail 2 is connected to the top plate 1 and the base 3 by bolts, and the horizontal adjustment mechanism 4 is installed At the bottom four corners of the base 3, the horizontal adjustment of the device can be realized.

[0053] Ellipse correction mechan...

Embodiment 2

[0062] The implementation process of the method for correcting the outer ring of the A-type bearing of the present invention.

[0063] S1. Low-temperature quenching and heating: It adopts the automatic production line of mesh belt type protective atmosphere quenching, and its controllable atmosphere heating furnace is divided into four heating zones, which are respectively zone 1, zone 2, zone 3 and zone 4, and zone 1 and zone 2 respectively. , Zone 3, and Zone 4, the quenching heating temperature is set respectively: Zone 1 is 800°C, Zone 2 is 835°C, Zone 3 is 850°C and Zone 4 is 845°C, and the total quenching heating time is 55min;

[0064] S2. Quenching and cooling: After being released from the furnace, the outer ring of the bearing is automatically dropped into the quenching oil tank to cool, and the temperature of the quenching oil is controlled so that the oil outlet temperature of the outer ring of the bearing is controlled at 120 ° C. The stirring device and the circul...

Embodiment 3

[0071] The implementation process of the calibration method for the B-type bearing outer ring of the present invention.

[0072] S1. Low-temperature quenching and heating: the mesh-belt type protective atmosphere quenching automatic production line is adopted, and its controllable atmosphere heating furnace is divided into four heating zones, namely the first zone, the second zone, the third zone and the fourth zone, and the quenching heating temperature is set respectively: The first zone is 790°C, the second zone is 825°C, the third zone is 840°C and the fourth zone is 835°C, and the total quenching heating time is 45min;

[0073] S2. Quenching and cooling: After being released from the furnace, the outer ring of the bearing is automatically dropped into the quenching oil tank to cool, and the temperature of the quenching oil is controlled so that the oil outlet temperature of the outer ring of the bearing is controlled at 150 ° C. The stirring device and the circulating pump...

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Abstract

The invention discloses a device and a method for correcting a quenched bearing outer ring. The device comprises a rack, an ellipse correcting mechanism and a warp correcting mechanism. The ellipse correcting mechanism and the warp correcting mechanism are fixed on the rack, the ellipse correcting mechanism is used for controlling four ellipse correcting electric cylinders through a computer to drive four ellipse correcting clamping blocks to finish ellipse correction actions, and the warp correcting mechanism is used for controlling a warp correcting electric cylinder through the computer todrive a warp correcting pressing block to finish the warp correcting action. The correcting control ability and the correcting effect are improved, time and labor are saved in the correcting process,the on-site correcting process is optimized, the production period is shortened, the production cost is reduced, and the equipment utilization rate is improved. The device not only can be applied to correction of ellipses and warp of large-sized bearing outer rings, but also can meet the correction requirements for ellipses and warps of medium-large sized and medium-sized bearing outer rings.

Description

technical field [0001] The invention relates to the technical field of bearing heat treatment, in particular to a device and method for correcting the outer ring of a quenched bearing, which is especially suitable for correcting the ellipse and warpage of a large bearing outer ring, but is not limited thereto. Background technique [0002] Tissue stress and thermal stress inevitably appear in the quenching process of the large bearing outer ring, resulting in ellipse and warping deformation of the outer ring. In order to ensure the size after finishing, each bearing manufacturer has formulated corresponding heat treatment deformation standards for bearing outer rings. Once the outer ring of a large bearing exceeds the deformation standard, it needs to be corrected. [0003] The existing large-scale bearing outer ring heat treatment correction process usually adopts the method of internal support correction in the process. The method is: the ferrule is quenched and cooled to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D3/10B21D3/14B21D53/10C21D1/18C21D9/40C21D11/00
CPCB21D3/10B21D3/14B21D53/10C21D1/18C21D9/40C21D11/00
Inventor 梁钰吴晓东
Owner JIANGSU UNIV