Hard alloy tooth top square tooth type saw chain

A cemented carbide tooth and tooth type technology, applied in the field of chain saws, can solve the problems of shortening the service life of the saw chain and being uneconomical, and achieve the effects of improved durability, improved service life and high hardness

Inactive Publication Date: 2014-02-05
缙云县鼎盛工具制造厂(普通合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although theoretically the cutting teeth of the saw chain can be blunted and can be repaired by filing, but most of the actual users do not know how to repair the file, and it is not economically cost-effective to spend a lot of time repairing the saw teeth, so the new saw chain is scrapped when it is blunt, which greatly shortens the The service life of the saw chain

Method used

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  • Hard alloy tooth top square tooth type saw chain
  • Hard alloy tooth top square tooth type saw chain
  • Hard alloy tooth top square tooth type saw chain

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Embodiment Construction

[0022] Figure 1-Figure 2 Among them, the carbide-tipped square-toothed saw chain is composed of a left cutter chain 1, a right cutter chain 2, a chain shaft 3, a transmission piece 4 and a connecting piece 5, and the left cutter chain 1 is welded with a left carbide Tooth piece 6, is welded with right cemented carbide tooth piece 7 on the right cutter chain piece 2. The structures and shapes of the left cutter chain piece 1 and the right cutter chain piece 2 are completely symmetrical.

[0023] Figure 3-Figure 14 Among them, both the left cutter chain piece 1 and the right cutter chain piece 2 are composed of cutting teeth 8 , material limiting teeth 9 , connecting parts and two riveting holes 10 . The left hard alloy tooth block 6 and the right hard alloy tooth block 7 are fan-shaped prisms, and most of the welds 11 welded with the cutting teeth 8 are cylindrical surfaces. This structure can make the left hard alloy tooth block 6 and the right hard alloy tooth block The ...

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Abstract

The invention relates to a hard alloy tooth top square tooth type saw chain of a chain saw. The hard alloy tooth top square tooth type saw chain is characterized in that a small hard alloy tooth block is welded on a tooth top position of the saw chain, and a hard alloy square tooth type tooth top is formed. The hard alloy tooth block is made into a fan-shaped prism, most of the welding surface is a cylindrical surface, and the circular arc radius of the cylindrical surface is 2 to 4mm, and is preferably 2.5 to 3.5mm. The hard alloy tooth top square tooth type saw chain adopts a butt welding method for welding the hard alloy tooth block with cutting teeth, the hard alloy tooth block and the cutting teeth are in directly contact and butt fusion, no middle layer is formed, the connecting intensity of welding seams is improved by 4 times through being compared with that of brazing, and the firmness is high. The heat treatment is carried out after the tooth block welding, the welding brittleness of the cutting tooth body behind the welding seams is eliminated, and the brittleness fracture of the cutting tooth body during the sawing can be prevented. Finally, the hard alloy tooth top and the cutting teeth are simultaneously subjected to tooth grinding, and the optimum consistent square tooth type corners are obtained.

Description

technical field [0001] The invention relates to a chain saw, in particular to a hard alloy tooth-tip square-tooth saw chain for the chain saw. Background technique [0002] Chain saws are mainly used for sawing trees in forest felling, garden trimming, wood processing and other operations. The chain saw is composed of a prime mover, a guide plate, a saw chain and a sprocket, etc. The guide plate is fastened on the housing of the prime mover, and the saw chain rotates around the guide plate and the sprocket wheel. The cutting teeth of modern saw chains mainly include semi-square teeth and square teeth. Square-tooth saw chains have better sharpness and higher durability than half-square saw chains. Not good, makes the saw chain less durable and lifespan. The saw chain is made of alloy structural steel or tool steel. The cutting tooth chain piece of the current saw chain is a whole. The hardness of the tooth edge is not too high, and it is easy to wear and become blunt. Espec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27B33/14B27B17/00
Inventor 甘英俊吕钦渭林石
Owner 缙云县鼎盛工具制造厂(普通合伙)
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