Novel jig saw

Abstract

The invention discloses a novel jig saw which comprises a head and a motor arranged in the head. A first driving wheel in linkage with a motor shaft extension end of the motor is eccentrically hinged with one end of a first connecting rod; and the other end of the first connecting rod is hinged with a first reciprocating rod on which a first saw blade is fixed. The novel jig saw is characterized by further comprising a second driving wheel in linkage with the motor shaft extension end; the second driving wheel is eccentrically hinged with one end of a second connecting rod; and the other end of the second connecting rod is hinged with a second reciprocating rod on which a second saw blade is fixed. The novel jig saw is also provided with a linear limiting mechanism which keeps a certain gap between the first reciprocating rod and the second reciprocating rod and can move linearly; the first saw blade and the second saw blade are respectively clamped on the inner side surfaces close to each other at the lower parts of the first reciprocating rod and the second reciprocating rod; and the linear reciprocating motion of the first saw blade is opposite to the linear reciprocating motion of the second saw blade. As the parts are symmetrically designed, the jig saw operates stably, is easy to operate and has relatively high working efficiency.

Description

technical field [0001] The invention relates to a novel curve saw, especially a novel curve saw with double saw blades. Background technique [0002] Electric jigsaw is a relatively commonly used tool, which is widely used in industries such as automobiles, communication, wood molds, decoration, leather, etc., through the up and down reciprocating motion of the saw blade, it can perform linear or horizontal cutting on wood, metal, plastic, rubber and other workpieces. Curve cutting, adjust the left and right angles of the bottom plate to perform bevel cutting. [0003] At present, electric jigsaws generally drive an eccentric wheel for a motor to drive a reciprocating rod to realize reciprocating cutting motion. For example, the authorized announcement number is CN201644927U discloses a transmission mechanism of a jigsaw, the eccentric wheel and the large gear are concentrically assembled on the gear shaft, the rotor is installed on the motor shaft, and meshes with the larg...

AI Technical Summary

Problems solved by technology

[0004] However, for the above-mentioned jigsaw, when the reciprocating rod reciprocates, the entire jigsaw must vibrate in the Y-axis and X-axis directions.

In order to eliminate this vibration, you can configure the balance weight in the Y-axis direction. However, the existing jigsaw is difficult to fit in place only with this balance weight, and generally has a speed-regulating mechanism for speed regulation according to different work requirements. When adjusting It is more difficult to register the balance amount when the speed is different, and it is not easy to configure the balance weight in the X-axis direction than the Y-axis direction; in addition, this kind of unidirectional sawtooth saw blade can only cut when the saw blade is raised. When the jigsaw machine is in a sinking state, the sinking force is completely borne by a base. Since the saw blade reciprocates, the base will present a reciprocating movement up and down, making it difficult to maintain dynamic balance during work. Affect

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