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Drum-type chain roller and production technology thereof

A kind of manufacturing process, waist-drum-shaped technology, applied in the field of waist-drum-shaped chain roller and its manufacturing process, can solve the problems such as difficulty in meeting the quality requirements of roller parts, achieve the goal of reducing service life, improving stress state, and increasing high-speed bearing capacity Effect

Active Publication Date: 2018-01-16
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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  • Drum-type chain roller and production technology thereof
  • Drum-type chain roller and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

[0022] b. Open a 1.5mm deep pre-port at the end of the roller blank (the pre-port can be a blind hole milled out to prepare for the subsequent perforation), and then the roller blank is positively squeezed and stretched. An extrusion cavity is formed inside the blank;

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

[0024] d. Place one end of the roller blank in a conical die, and use ...

Embodiment 2

[0027] Embodiment 2: A waist drum-shaped chain roller, comprising a roller body, the middle of the roller body has a waist drum-like protrusion of 0.02 mm.

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

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

[0030] b. A 2mm-deep pre-port is opened at the end of the roller blank, and then the roller blank is positively squeezed and stretched to form an extrusion cavity inside the roller blank;

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

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

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

[0034] f. Straighten and squeeze the inner ...

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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 waist drum-shaped chain roller and its manufacturing process, belonging to the field of chain accessory manufacturing. 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 often use roller chains as the transmission pair. In the high-speed chain transmission (usually n 1max =6000-8000r / min, and some even exceed 10000r / min), the roller parts of the chain first mesh with the sprocket teeth, and directly suffer high-speed fracture and fracture failure, destroying the normal meshing of the chain and the sprocket, and causing the chain It breaks and fails early, so that many main engines such as engines 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 transmiss...

Claims

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Application Information

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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
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