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Waist drum-shaped chain roller and its manufacturing process

A waist drum-shaped and roller technology is applied in the field of waist drum-shaped chain rollers and their manufacturing processes, which can solve problems such as difficulty in meeting the quality requirements of roller parts, reduce service life, improve stress state, and improve high-speed bearing capacity. Effect

Active Publication Date: 2019-02-15
湖州锐狮标准件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to meet the quality requirements of high-speed chain drive for roller parts

Method used

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  • Waist drum-shaped chain roller and its manufacturing process
  • Waist drum-shaped chain roller and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of waist drum shape chain roller, as attached figure 1 As shown, the roller body 1 is included, and the middle part of the shaft body of the roller body 1 has a drum-shaped protrusion 2 of 0.01 mm (the size refers to the distance from the highest point of the drum-shaped protrusion to the level of the shaft body).

[0020] The manufacturing process of the drum-shaped chain roller, as attached figure 2 shown, including the following steps;

[0021] a. Feed the round steel bar, cut off to obtain the roller blank, and level the end of the roller blank;

[0022] b. Open a 1.5mm deep pre-opening at the end of the roller blank (the pre-opening can be a blind opening milled out to prepare for the subsequent perforation), and then carry out forward extrusion and stretching on the roller blank. An extrusion cavity is formed inside the billet;

[0023] c. Perforate the roller blank and remove the waste in the roller blank;

[0024] d. Place one end of th...

Embodiment 2

[0027] Embodiment 2: A drum-shaped chain roller, comprising a roller main body, and a drum-shaped protrusion of 0.02 mm in the middle of the shaft body of the roller main body.

[0028] The manufacturing process of the drum-shaped chain roller comprises the following steps;

[0029] a. Feed the round steel bar, cut off to obtain the roller blank, and level the end of the roller blank;

[0030] b. Open a 2mm deep pre-opening at the end of the roller blank, and then carry out positive extrusion and stretching on the roller blank, forming an extrusion cavity inside the roller blank;

[0031] c. Perforate the roller blank and remove the waste in the roller blank;

[0032] d. Place one end of the roller blank in the conical die, and use the punch rod at the other end for unilateral taper extrusion;

[0033] e. Rotate the roller blank, perform unilateral taper extrusion on the other end surface of the roller blank, and form a 0.02mm waist drum-shaped protrusion in the middle of th...

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Abstract

The invention discloses a drum-type chain roller. The chain roller comprises a roller main body, and a drum-type bulge in 0.01-0.03 mm is arranged in the middle of the shaft body of the roller main body. By means of the drum-type chain roller, the stress state of the roller in the working condition of high-speed repeated impact is greatly improved, the high-speed bearing capacity of the roller part is significantly improved, and the working reliability of high-speed chain transmission is ensured.

Description

technical field [0001] The invention relates to a drum-shaped chain roller and a manufacturing process thereof, belonging to the field of manufacturing chain accessories. Background technique [0002] High-speed transmission chains such as automobile engine timing chains, oil pump chains, fuel pump chains, balance shaft chains, aviation chains, military vehicle chains, and ship chains mostly use roller chains as transmission pairs. In high-speed chain transmission (usually n 1max = 6000-8000r / min, some even exceeding 10000r / min), the roller parts of the chain first mesh with the sprocket teeth, directly withstand high-speed fracture, fracture failure, destroy the normal meshing of the chain and the sprocket, and cause the chain As early as its fracture and failure, many main engines such as the engine cannot work normally, and serious accidents often occur. Over the years, the early failure of roller parts has become a major difficulty and hot issue in high-speed transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16G15/00B23P15/14
Inventor 章伟伟殷国荣杨枚荣陈如汉
Owner 湖州锐狮标准件制造有限公司