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Control method of heating stage in linear guide rail isothermal normalizing

A linear guide, heating stage technology, used in heat treatment process control, heat treatment furnaces, manufacturing tools, etc., can solve the problems of reduced and weakened movement accuracy of machine tool working parts, and achieve the effect of avoiding excessive heating temperature

Inactive Publication Date: 2019-03-05
南京雄豹精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the working time is too long, the steel balls will start to wear, and the preload on the steel balls will start to weaken, resulting in a reduction in the movement accuracy of the working parts of the machine tool
If you want to maintain the original accuracy, you must replace the guide rail bracket, or even replace the guide rail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further explained below.

[0016] A method for controlling the heating stage in isothermal normalizing of linear guide rails. First, the heating temperature and holding time for austenitization are determined, and preheating is carried out before heating. Put it into the heating furnace, then continue heating to 950 degrees Celsius, and keep the temperature at 950 degrees Celsius for 3 to 4 hours.

[0017] Among them, when the linear track steel is heated, all the steel is kept horizontally suspended, and the length of the linear guide steel is cut to the same length, and is fixed on the bracket by both ends. The linear guide rail steel materials are arranged in parallel arrays, and the four-way intervals of adjacently arranged steel materials are kept at 20-30 cm; all the linear guide rail steel materials are located more than 50 cm away from the heating furnace wall. The bracket includes a multi-layer structure, and each layer is provide...

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PUM

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Abstract

The invention discloses a control method of a heating stage in linear guide rail isothermal normalizing. The control method aims to realize uniform control of heating of normalizing of batched linearguide rails. Compared with a traditional technology, the method is characterized in that firstly, a heating furnace is preheated, linear rail steel is sent to the heating furnace until the temperaturereaches 900 DEG C so that the problem that crystal grains are not uniform in growth in the austenite transformation process due to the facts that the heating time of the linear rail steel are too long and the temperature rise of the initial section heating furnace is not stable can be solved; and meanwhile, the linear rail steel in the heating furnace is controlled to be uniformly distributed atintervals so that all the linear rail steel can be uniformly heated without a dead angle.

Description

technical field [0001] The invention relates to a method for controlling the heating stage in isothermal normalizing of a linear guide rail. Background technique [0002] Linear guide rails, also known as line rails, slide rails, linear guide rails, and linear slide rails, are used in linear reciprocating motion applications, and can bear a certain torque, and can achieve high-precision linear motion under high load conditions. According to the nature of friction, linear motion guides can be divided into sliding friction guides, rolling friction guides, elastic friction guides, fluid friction guides and other types. Linear bearings are mainly used in automated machinery, such as machine tools imported from Germany, bending machines, laser welding machines, etc. Of course, linear bearings and linear axes are used together. Linear guides are mainly used in mechanical structures with high precision requirements. There is no intermediate medium between the moving elements and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/28C21D9/00C21D11/00
CPCC21D1/28C21D9/0068C21D11/00
Inventor 郑三豹
Owner 南京雄豹精密机械有限公司
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