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Method for preparing intubatton type stainless steel reverser of ball bearing screw rod pair

A technology of ball screw pair and stainless steel, which is applied in the field of preparing ball screw pair intubation type stainless steel reverser, which can solve the problems that the guide ball tube cannot meet the requirements of the guide tube, the roundness of the turning part is reduced, and the ball passes through. , to achieve the effect of improving working strength and service life, smoothing the tube hole and improving the quality of the tongue

Inactive Publication Date: 2007-10-10
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the guide tube prepared by the bending technology to meet the requirements of the ball screw pair for the guide tube, because the bending process has the following limitations: (1) Constrained by the plastic deformation and elastic deformation of the metal, the tube wall It should not be too thick, otherwise it will be difficult to form; (2) During the bending process, due to the tensile pressure on the outer arc of the turning part and the compressive stress on the inner arc, the wall of the bead guide tube will be uneven
The pipe wall becomes thinner in the outer arc part of the load, and the inner arc part of the pipe is often squeezed and wrinkled due to the compressive stress, and the roundness of the turning part is reduced, which affects the passing of the ball.

Method used

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  • Method for preparing intubatton type stainless steel reverser of ball bearing screw rod pair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The average particle size of the stainless steel powder is 4 μm, and the binder adopts a multi-polymer component paraffin-based binder, and the weight percentage of each component is PW:HDPE:EVA:SA=79:13:8:0. The binder was kneaded for 1.5 hours at a temperature of 130° C. on a kneader and then kneaded with stainless steel powder on a kneader at a temperature of 110° C. for 2 hours, and the powder loading was 56% by volume. After granulation, it is injection molded on an injection machine through a bead tube mold equipped with plastic inserts. The injection temperature is 140°C, the injection pressure is 100MPa, and the mold temperature is 30°C. Dissolving and degreasing the plastic insert in a mixed solvent of dichloromethane and trichloroethylene, the temperature of the solution is 40°C. Heat the formed blank of the guide ball tube without inserts in a thermal degreasing furnace under the protection of hydrogen to 200°C for 1 hour, then raise the temperature to 380°C ...

Embodiment 2

[0022] The average particle size of the stainless steel powder is 10 μm, and the binder adopts a multi-polymer component paraffin-based binder, and the weight percentage of each component is PW:HDPE:EVA:SA=70:15:10:5. The binder was kneaded for 1.5 hours at a temperature of 130° C. on a kneader and then kneaded with stainless steel powder on a kneader at a temperature of 110° C. for 2 hours, and the powder loading was 60% by volume. After granulation, it is injection-molded on an injection machine through a bead tube mold equipped with plastic inserts. The injection temperature is 140°C, the injection pressure is 90MPa, and the mold temperature is 30°C. Dissolving and degreasing the plastic insert in a mixed solvent of dichloromethane and trichloroethylene, the temperature of the solution is 40°C. Heat the formed blank of the guide ball tube without inserts in a thermal degreasing furnace under the protection of hydrogen to 200°C for 1 hour, then raise the temperature to 380°C...

Embodiment 3

[0024] The average particle diameter of the stainless steel powder is 10 μm, and the binder adopts a multi-polymer component paraffin-based binder, and the weight percentage of each component is PW:HDPE:EVA:SA=75:15:5:5. The binder was kneaded on a kneader at a temperature of 130° C. for 1.5 hours and then kneaded with stainless steel powder on a kneader at a temperature of 130° C. for 1.5 hours, and the powder loading was 62% by volume. After granulation, it is injection molded on an injection machine through a bead tube mold equipped with plastic inserts. The injection temperature is 140°C, the injection pressure is 100MPa, and the mold temperature is 30°C. Dissolving and degreasing the plastic insert in a mixed solvent of dichloromethane and trichloroethylene, the temperature of the solution is 40°C. Heat the formed blank of the guide ball tube without inserts in a thermal degreasing furnace under the protection of hydrogen to 200°C for 1 hour, then raise the temperature to...

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Abstract

A process for preparing the ball guiding tube of ballscrew includes such steps as preparing a plastic part from polycarbonate by injection moulding, using it as the embedded part of the mould for ball guiding tube, proportionally mixing the stainless steel powder with adhesive, filling the mixture in the mould to obtain the blank of ball guiding tube with said embedded part, immersing it in the mixture of dichloromethane and trichloroethene until said embedded part is fully dissolved, over-heat degreasing, pre-sintering, and sintering at 1350-1370 deg.C under the protection of H2 atmosphere.

Description

technical field [0001] The invention belongs to the technical field of preparation of key elements of rolling functional parts, and in particular provides a method for preparing a ball screw auxiliary intubation type stainless steel reverser (also known as a ball screw auxiliary stainless steel guide tube), which realizes low cost, Preparation of high-performance ball screw secondary cannula-type stainless steel inverter. Background technique [0002] The ball screw pair is a rolling functional component composed of a ball screw, a ball nut and a ball, and is an important part of a CNC machine tool and various types of automated machinery. It can convert rotary motion into linear motion, or convert linear motion into rotary motion. In order to achieve precise positioning and power transmission within the specified stroke range of the ball screw pair, the first condition is to make the balls roll repeatedly in the thread raceway. As the key component of the ball screw, the ...

Claims

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Application Information

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IPC IPC(8): B22F5/10B22F3/20B22F3/22B29B11/08
Inventor 何新波曲选辉刘宪银胡荣远黄祖尧任淑彬段柏华汤春峰
Owner UNIV OF SCI & TECH BEIJING
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