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Quick change hand saw

A hand saw and saw blade technology, applied in the field of saw structure, can solve the problems of low processing precision requirements, automatic adjustment and fixation, high processing precision requirements, etc., and achieve the effects of reducing processing precision requirements, convenient replacement, and high stability

Inactive Publication Date: 2015-09-30
ZHEJIANG JUXING TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the defect that the existing saw is fixed by multiple bolts, which causes inconvenient replacement of the saw blade, and provides a quick-change hand panel saw, which can stabilize the saw blade with only one bolt, and the replacement of the saw blade is convenient and fast
[0007] The present invention also solves the problem that the existing saws use three-point positioning, which requires high machining accuracy and is prone to affect the fixing of the saw blade due to errors, and provides a quick-change hand panel saw that uses two-point positioning and combines the strength of the saw blade itself For fixing, the processing accuracy is low, and the allowable error exists, and it does not affect the fixing of the saw blade.
[0008] The present invention also solves the defect that the existing saw uses three-point positioning, which requires high position accuracy and cannot be automatically adjusted and fixed in the event of an error, and provides a quick-change hand panel saw that uses two-point positioning , one point is the dovetail groove tight fit positioning, and the other point is the tapered screw adjustment clamping and fixing, even if there is an error, it can be automatically adjusted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiment: a kind of quick-change hand panel saw (see attached figure 1 attached figure 2 ), including a handle 4 and a saw blade 1 fixed to the handle, the saw blade is inserted into the front end of the handle and fixed by a bolt 3 .

[0034]The front portion of the handle is fixed with a front end cover 2, and the rear portion of the handle is a handle 5. The front end cover is composed of two parts connected by buckles, which are respectively the left front end cover 12 and the right front end cover 8 (see attached Figure 7 ), the front end cover is made of metal, and a vertical groove 7 for saw blade insertion is formed between the left front end cover and the right front end cover. The two parts of the front end cover are respectively fixed with the handle by screws, the left front end cover is in the shape of an arc, the left front end cover is provided with bolt holes 17 and the fixing shaft installation holes 22, the right front end cover is in the shape o...

Embodiment 2

[0040] Embodiment 2: A kind of quick-change hand panel saw (see attached Figure 10 attached Figure 11 ), the opening of the dovetail groove faces the fixed hole, the distance between the center of the bolt hole and the center of the fixed shaft is greater than the distance between the center of the fixed hole and the center of the inscribed circle at the bottom of the dovetail groove and the same diameter as the fixed shaft, The circumference of the fixing hole is far away from one end of the dovetail groove and crosses the line between the center of the fixing hole and the center of the inscribed circle at the bottom of the dovetail groove and the center of the inscribed circle with the same diameter as the fixed shaft and then connects with the sliding entrance. The shortest distance from the side of the sliding entrance away from the dovetail groove to the center of the inscribed circle 15 inscribed in the dovetail groove with the same diameter as the fixed shaft is L, an...

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PUM

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Abstract

The invention relates to a rapidly-changed hand saw which can be used for overcoming the defect of inconvenience in saw blade replacement due to multi-bolt fixing mode adopted in an existing saw. The tail end of a saw blade of the hand saw is provided with a dovetail groove and a fixing hole, wherein the dovetail groove clamps a fixing shaft; a bolt is only used in the fixing hole, the bolt and the fixing hole are of an eccentric structure; the saw blade and a grab handle are fixed by virtue of extruding the saw blade. The bolt is only used in one place, and by virtue of the saw blade, the saw blade and the grab handle are fixed, so that the stability is high, replacement is relatively convenient; the fixing hole and the bolt hole are of the eccentric structure, so that the saw blade machining precision requirement is reduced, and the fixation of the saw blade and the grab handle is not influenced by the existence of errors.

Description

technical field [0001] The invention relates to a saw structure, in particular to a quick-change hand panel saw capable of quickly changing saw blades. Background technique [0002] Saws have brought a lot of convenience to people's work and life. People can easily use them for processing, such as sawing wood or processing other devices, and whether it is a factory or a family, they will use saws, but the saws used in factories and households The saw will be different. The size of the objects processed by the saws used in the factory will be relatively large, so the saws are relatively large. In order to improve efficiency, most of them will use automatic processing saws, and the factory has a large number of personnel, so multiple people can participate in the operation together. However, the saws used at home are generally small and exquisite, and most of them are operated by one person, so they are more arbitrary when used. [0003] After the saw is used for a long time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D51/10
Inventor 陈俊李跃明
Owner ZHEJIANG JUXING TOOL