Manufacturing method of slewing bearing

A technology of slewing bearing and manufacturing method, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of poor quality stability, short service life of slewing bearing, low processing production efficiency, etc., and achieve stable quality and small machining allowance. , the effect of saving raw materials

Inactive Publication Date: 2016-03-23
MAANSHAN HUADONG SLEWING BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of short service life, poor quality stability and low processing and production efficiency of existing slewing bearings, the present invention provides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A manufacturing method of a slewing bearing includes the following steps:

[0045] 1) Material selection, choose the material of 50Mn steel;

[0046] 2) Forging, forging the raw material in step 1) into a ring gear blank;

[0047] 3) Rough machining, rough machining the ring gear blank obtained in step 2). First, fix the ring gear blank on the machine tool table with a clamp, and use a lathe to perform surface treatment of the ring gear blank to remove the surface rust layer and leave the remaining The amount is 2~3mm;

[0048] 4) Scribe, draw the center line of the raceway along the inner wall of the gear ring after rough machining in step 2), and at the same time preset 2 plug hole positions on the outer wall of the gear ring and the center line;

[0049] 5) For boring, use a boring machine to process the plug hole at the position of the plug hole in step 4). The diameter of the raceway is d=25.4mm, then the diameter of the plug hole is D=d+6.6mm=32mm; in the raceway On the b...

Embodiment 2

[0065] Same as embodiment 1, the difference is: in step 5) the diameter of the raceway d=50.8mm, then the diameter of the plug hole is D=d+9.2mm=60mm; in step 8) quenching and tempering, for the embodiment The raceway processed in step 6) in step 1 is quenched and tempered. First, the gear ring after semi-finish turning in step 6) is fixed by multi-point support, and then the raceway surface is heated to 700°C, and then the nozzle is aligned The inner surface of the quasi-raceway rotates relative to the ring gear and sprays quenching fluid to cool the raceway surface to 150°C before tempering. The tempering temperature is 300°C. The quenching fluid adopts polyether aqueous solution, and the nozzle speed is 180mm / s. , Correcting the rotation of the cylindrical surface axis in step 7) can ensure uniform quenching and improve accuracy; immediately stop spraying when rotating 360°-n=352.72°, and mark the stop position of the nozzle on the raceway surface, where n=180l / πR= (180×2×50...

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PUM

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Abstract

The invention discloses a manufacturing method of a slewing bearing, belongs to the field of production of slewing bearings, and solves the problems of short service life, weaker quality stability and low machining production efficiency of the traditional slewing bearings. The manufacturing method of the slewing bearing comprises a rough machining step, a lineation step, a hole boring step, a semi-finish turning step, a tempering step, a finish machining step, a roller way finish machining step and an assembly step, wherein the tempering step of the inner surface of a roller way is to use a nozzle for aligning to the inner surface of the roller way to spray quenching liquid and immediately stop spraying when rotating by 360-n degrees, and the roller way finish machining step is to grind the inner surface of the roller way by adopting turning to replace grinding. The manufacturing method of the slewing bearing can effectively improve the production efficiency, and manufactures the slewing bearings with stable quality, high precision and long service life.

Description

Technical field [0001] The invention belongs to the field of slewing bearing production, and specifically relates to a manufacturing method of a slewing bearing. Background technique [0002] As an important moving component, the slewing bearing is at the key part of the structural link. The slewing bearing is widely used in the real industry. It is called: "the joint of the machine". The main structural types currently used in actual production are single-row four Point contact ball type, double volleyball type, multi-row roller type, etc. It is widely used in truck cranes, port cranes, railway cranes, ship cranes, container cranes, metallurgical cranes, excavators, filling machines, marine equipment, and high-precision, sophisticated and cutting-edge fields such as CT machine standing wave therapy equipment, radar antenna bases , Missile launchers, tanks, robots, and rotating restaurants. The force of the slewing bearing is complicated, and higher requirements are put forward...

Claims

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Application Information

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IPC IPC(8): B23P23/04
CPCB23P23/04
Inventor 虞洪流虞洪波周仁林何平
Owner MAANSHAN HUADONG SLEWING BEARING
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