JPH0611706Y2 - Jigsaw - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of an electric jigsaw, which is often used for cutting curves, straight lines and window holes in wood, new building materials, mild steel plates, etc. is there.

[Prior Art] A conventional saw blade uses a dedicated saw blade. Since this saw blade has a certain width, it cannot be cut at right angles. Moreover, it is impossible to cut glass plates, stones, and concrete.

It is possible to electrodeposit diamond abrasive grains on the tip of the blade instead of the saw blade, but the blade becomes expensive, and since the reciprocating stroke of the saw blade of a jigsaw is 20 to 40 m / m on average, it is possible to use the electrode immediately. The worn part is worn, and the unit cost for cutting 1 cm of stone is 1.
It costs more than 00 yen and you cannot cut it at right angles. There is a defect that thick plates cannot be cut.

[Problems to be solved by the invention] The object of the present invention is to cut a material to be cut at right angles.
It is to provide a jigsaw that can be cut inexpensively and smoothly.

[Means for Solving the Problems] Means of the present invention are as follows.

A cutting wire, in which diamond or other hard abrasive grains are electrodeposited on a wire such as a piano wire, is fixed to a main body equipped with an electric motor by a fixed holder and suspended, and at the lower end of the cutting wire,
A jigsaw in which a catcher that contacts the lower surface of the material to be cut, its push-up spring, and the adjustment plate for the push-up spring are inserted, and a fixing tool for fixing the inserted adjustment plate to the cutting wire is attached to the adjustment plate.

[Example] In the figure, reference numeral 1 is a main body having an electric motor 2, which has a board 3 to be pressed against a material A to be cut, and a fixing wire 4 suspends a cutting wire 5 in which diamond abrasive grains are electrodeposited on a piano wire. .

At the tip of the cutting wire 5, a tray 6 to be applied to the lower surface of the material A to be cut, and a push-up spring 7 and an adjusting plate 8 for adjustingably supporting the push-up spring are inserted, and a screw for fixing the adjusting plate 8 to the cutting wire 5. 9 is screwed into the horizontal internal thread 11 of the lower cylinder 10 of the adjusting panel 8.

The push-up spring 7 is not limited to the illustrated coil spring, and may be a leaf spring bent in a square shape or a conical spring.

[Operation] When making a window hole in the material to be cut, a hole is previously made in the material to be cut, the cutting wire 5 is passed through the hole, and then the saucer 3, the push-up spring 7, and the adjusting plate 8 are passed through, The wire is tightened with the screw 9, and the upper end is fixed to the fixed holder 4 of the main body 1. In this state, the cutting wire 5 is moved up and down. (700-3200 times / min) At that time, the wire is always pulled by the push-up spring, so that the wire of the wire can be smoothly cut without bending when descending. Ordinary cutting is performed in the same manner.

[Advantage of the Invention] According to the present invention, since the cutting wire is electrodeposited with diamond or other abrasive grains on a wire such as a piano wire, the electrodeposition area is 1/10 or less of that of a saw blade, and a 1 cm stone material can be cut. Unit price is 1/100
It becomes the following and can be cut at right angles, and if a long cutting wire is used, stones with a thickness of 100 mm can be cut without trouble.

[Brief description of drawings]

The drawings show an embodiment of a jigsaw according to the present invention. FIG. 1 is a front view and FIG. 2 is a partially enlarged sectional view. 1 ... Main body, 2 ... Electric motor, 4 ... Fixed holder, 5 ...
… Cut wire, 6 …… Saucepan, 7 …… Push-up spring, 8 ……
Adjustment panel, 9 ... screw

Claims (1)

[Scope of utility model registration request] 1. A jigsaw comprising the following three elements (a), (b) and (c). (A) A cutting wire, in which diamond or other hard abrasive grains are electrodeposited on a wire such as a piano wire, is fixed and hung by a fixed holder to a main body equipped with an electric motor. (B) A lower end of the cutting wire is covered with The saucer in contact with the lower surface of the cutting material, its push-up spring, and the adjustment plate of the push-up spring were inserted through, and (c) the fixing tool for fixing the inserted adjustment plate to the cutting wire was attached to the adjustment plate.