CN202951931U

CN202951931U - Saw bow of changing saw bit quickly

Info

Publication number: CN202951931U
Application number: CN 201220585717
Authority: CN
Inventors: 王朝阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-16
Filing date: 2012-11-08
Publication date: 2013-05-29
Anticipated expiration: 2022-11-08

Abstract

A saw bow of changing a saw bit quickly comprises an eccentric wheel locking mechanism 2 and a fine adjustment screw 3. The saw bow of changing the saw bit quickly is characterized in that both the eccentric wheel locking mechanism 2 and the fine adjustment screw 3 are cylinders, wherein the eccentric wheel locking mechanism serves as a pulling cylinder of a saw bit 4, both the eccentric wheel locking mechanism 2 and the fine adjustment screw 3 penetrate and are respectively sleeved in round holes of a front head supporting seat and a back head supporting seat of the pulling cylinder of the pulling cylinder. An eccentric wheel 21 is arranged at one end of the eccentric wheel locking mechanism 2. An eccentric wheel shaft is arranged at the position of 1/2 of the radius of the eccentric shaft. A moving handle 23 is installed on the eccentric wheel 21. A hanged front pin 24 is arranged at one end of the eccentric wheel locking mechanism 2. One party which is mainly pulled tightly is achieved pulling tightly and locking by one eccentric wheel. When the saw bit needs to be changed, a handle of the eccentric wheel only moves 180 degrees, and then to-be-changed saw bit can be dismounted. After a new saw bit is mounted, the handle of the eccentric wheel moves 180 degrees back again, and then the saw bow can be used. The saw bit can be changed quickly. Two ends of the saw bit are in a round shape, so the saw bit can be fixed in any angle. The saw bit can be pulled tightly without using a nut, so service life of the saw bit can be prolonged. The saw bit can be regulated, and fracture of the saw bit can be reduced.

Description

The saw bow of energy quick-replaceable saw blade

Technical field

The utility model is a kind of machinery tool steel saw bow commonly used.

Background technology

Traditional saw bow is all with wing nut, saw blade to be compressed; and be square basically; when wanting veer, to all come loose screw; and can only fix that four direction; large with gap of a specified duration; usually can saw blade reverse out-of-line, the saw blade frangibility, nut has been used of a specified duration also to there will be stripped thread or twist not tight.

Summary of the invention

In order to overcome above-mentioned deficiency, the utility model provides a kind of Novel saw bow, can not only the quick-replaceable saw blade, and comprehensive 360 ⁰Adjust saw blade, more can make saw blade align not frangibility.

The concrete scheme that the utility model adopts is: the saw bow of energy quick-replaceable saw blade, comprise eccentric wheel retaining mechanism, fine setting screw rod, eccentric wheel retaining mechanism and fine setting screw rod as the saw blade stay column are all cylinders, they prop up in the circular hole of headstock before and after all being set on respectively stay column, on the eccentric wheel retaining mechanism, an end is provided with eccentric wheel, camshaft is located at 1/2 place of eccentric radius, is equipped with on eccentric wheel and dials handle, and on the eccentric wheel retaining mechanism, an end is provided with the front hanging pin.

The beneficial effects of the utility model: both can the quick-replaceable saw blade; Again because its two ends are round, so saw blade can be fixed at any angle; The tension saw blade is not to use nut, therefore can extend service life, saw blade can be adjusted to align also and can reduce and fracture.

The accompanying drawing explanation

Fig. 1. the front view of saw bow;

The locking enlarged drawing of Fig. 2 eccentric wheel retaining mechanism;

Fig. 3. the enlarged drawing of fine setting screw rod;

A headstock, 21 after a Cuo, 12, stay column before number in the figure 1 saw bow rack, 2 eccentric wheel retaining mechanisms, 3, fine setting screw rod, 4 saw blades, 11 stay columns, eccentric wheel, 22, eccentric shaft, the 23 groups of handles, 24, front hanging pin, 31, rear extension pin, 32 nuts.

The specific embodiment

Comprise eccentric wheel retaining mechanism 2, fine setting screw rod 3 referring to accompanying drawing 1～3 the utility model, eccentric wheel retaining mechanism 2 and fine setting screw rod 3 as saw blade 4 stay columns are all cylinders, they prop up in the circular hole of headstock before and after all being set on respectively stay column, on eccentric wheel retaining mechanism 2, an end is provided with eccentric wheel 21, camshaft 22 is located at 1/2 place of eccentric radius, be equipped with on eccentric wheel 21 and dial handle 23, on eccentric wheel retaining mechanism 2, an end is provided with front hanging pin 24.

Claims

1. can quick-replaceable the saw bow of saw blade, comprise eccentric wheel retaining mechanism (2), fine setting screw rod (3), it is characterized in that: eccentric wheel retaining mechanism (2) and fine setting screw rod (3) as saw blade (4) stay column are all cylinders, they prop up in the circular hole of headstock before and after all being set on respectively stay column, the upper end of eccentric wheel retaining mechanism (2) is provided with eccentric wheel (21), camshaft (22) is located at 1/2 place of eccentric radius, be equipped with on eccentric wheel (21) and dial handle (23), the upper end of eccentric wheel retaining mechanism (2) is provided with front hanging pin (24).