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Thermal treatment technology for ball screws of machine tool

A ball screw and screw technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as cracking, bending deformation of slender screw rods, etc., achieve good wear resistance, solve bending deformation or cracking, and good Promoted app performance

Inactive Publication Date: 2015-08-12
HENGYANG FENGSHUN AXLE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a heat treatment process for machine tool ball screws; Preload eliminates backlash, ensuring high precision without excessively increasing torque

Method used

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Embodiment Construction

[0020] The technical scheme of the present invention is: a kind of heat treatment process of machine tool ball screw, it comprises the following steps:

[0021] Step 1: Put the screw rod into a 100KW medium-frequency induction machine for quenching heating. The quenching heating temperature is 840-950°C, and the holding time is 1-2 hours.

[0022] The second step: put the quenched and heated screw rod into a quenching furnace with nitrate grouping for the second quenching, the quenching temperature is 880-900°C, and the holding time is 1-2 hours.

[0023] The third step: Put the screw rod with nitrate quenching into the forging equipment, and carry out hot pressing straightening treatment. After the correction, there must be no obvious bending and cracks on both sides.

[0024] Step 4: Put the straightened screw rod into the tempering box for tempering treatment, and then immerse it in the solution with salt water after tempering, which is conducive to completely eliminating i...

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Abstract

The invention provides a thermal treatment technology for ball screws of a machine tool. The thermal treatment technology comprises the steps of: step 1, putting the ball screws into a medium-frequency induction machine to carry out quenching heating; step 2, putting the ball screws into a hardening furnace with nitrate to carry out second quenching; step 3, putting the ball screws into forging equipment to carry out hot-pressing straightening treatment; step 4, putting the ball screws into a tempering box to carry out tempering treatment; step 5, checking the sizes of the ball screws; step 6, putting the ball screws into the tempering tank again to carry out second tempering treatment; step 7, putting the ball screws on the table top of a cleaning machine to clean the ball screws; step 8, putting the ball screws on a fixture body of the machine tool to carry out machining; and step 9, carrying out aging treatment on the machined ball screws at a room temperature or a relatively high temperature. The thermal treatment technology solves the phenomenon of bending deformation or cracking of long and thin ball screws. The ball screws treated by adopting the thermal treatment technology have good wear resistance, long service life and relatively good popularization and application values in mechanical industries.

Description

technical field [0001] The invention relates to the technical field of part processing heat treatment, in particular to a heat treatment process of a machine tool ball screw. Background technique [0002] The ball screw is a commonly used part on the machine tool. It is an important part of the machine tool. The length-to-diameter ratio of the ball screw is >19, and the material is GCr15 steel. Usually, the heat treatment process often adopts intermediate frequency, high frequency, carbonitriding After heat treatment, the slender screw rod is prone to bending or cracking. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a heat treatment process for machine tool ball screws; Preload eliminates backlash, ensuring high precision without excessively increasing torque. [0004] The technical scheme of the present invention is: a kind of heat treatment process of machine too...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D9/32
Inventor 刘登发
Owner HENGYANG FENGSHUN AXLE CO LTD
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