JP2555993Y2 - Reciprocating blade grinding equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a reciprocating cutting blade grinding apparatus which is a pair of upper and lower saw blades, and is reciprocally slidable in the longitudinal direction by an eccentric cam and a crank mechanism so as to be relatively slidable. It is about.

[0002]

2. Description of the Related Art Generally, a reciprocating blade of this type is used in a brush cutter or the like, and is also known as a clipper blade. A saw blade having a saw blade formed on both sides like a shark or a blade formed on one side. There is. Reciprocating cutting blades require replacement and blade grinding depending on the number of times they are used, but the work is extremely time-consuming.To attach and remove the reciprocating cutting blades, cover the eccentric cam and crank mechanism, etc. The cam and crank mechanism had to be disassembled by opening the case, and it was difficult for general users to perform such disassembly to replace the saw blade. At present, there is no suitable grinding device.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a demand for such a market, in particular, a grinding operation of a reciprocating cutting blade is facilitated by using a hand grinder etc. owned by a user such as a brush cutter. It is an object of the present invention to provide a simple and inexpensive reciprocating blade grinding device.

[0004]

A reciprocating cutting blade grinding device according to the present invention is a pair of upper and lower saw blades, which are reciprocally slidably moved in a longitudinal direction relatively by an eccentric cam or a crank mechanism. In a reciprocating cutting blade grinding device for cutting plants and the like, a pair of hard reciprocating cutting blades sandwiching the reciprocating cutting blade from above and below and having a hardened inclined surface such as a super hard chip material or a super hard compound layer having the same inclination as the blade surface of the reciprocating cutting blade An upper and lower blade grind table member, a pin member for positioning the upper and lower blade grind table members and adjusting the reciprocating blade, and a screw member screwed to one of the upper and lower blade grind table members to push the reciprocating blade. A push screw member for adjusting a relative position of the reciprocating cutting blade to the blade surface and the inclined surface of the upper and lower blade grind table members; and a tightening member for clamping and fixing the reciprocating cutting blade between the upper and lower blade grind table members. It is characterized by a configuration having:

[0005]

Therefore, the reciprocating cutting blade grinding device according to the present invention is:
Since it is equipped with a pair of upper and lower blade grinding table members having a hardened inclined surface such as a cemented carbide tip material or a super-hard compound layer having the same inclination as the reciprocating blade, the pin member and the push screw have a simple and reliable configuration. By adjusting the members and tightening members, etc., the blade surface of the reciprocating cutting blade can be easily aligned with the hardened inclined surface of the super hard compound layer etc. of the upper and lower blade grinding table members, and easily and accurately reciprocated using a hand grinder etc. The cutting blade can be ground.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A reciprocating cutting blade 1 of this embodiment is a double-edged clipper blade used for a brush cutter, a hedge trimmer, and the like. FIG. 1 is a front view of the reciprocating cutting blade 1 attached to a grinding device according to the present invention. Show. This grinding device includes a pair of upper and lower blade grinding table members 2,
3, the reciprocating cutting blade 1 detached from a cutting blade driving device (not shown) is sandwiched from above and below, and the upper and lower blade grinding table members 2 and 3 which sandwich the reciprocating cutting blade 1 are two tightening members. By tightening the wing nut 4, the reciprocating cutting blade 1 is fixed between them. The two pin members 5 shown in the figure serve as an alignment guide for positioning the upper and lower blade grinding table members 2 and 3 relative to each other and for setting the reciprocating blade 1 at the time of grinding. The push screw member 7 screwed into the bent portion 6 formed in the above is rotated to push and move the reciprocating cutting blade 1, and the blade surface 8 of the reciprocating cutting blade 1 to be ground
Is extruded from the inclined surfaces 9 and 10 of the upper and lower blade grinding table members 2 and 3 by a predetermined grinding allowance. The positioning in the left-right direction is performed by manually moving the cutting blade 1 in the longitudinal direction. After this alignment, the wing nut 4 is tightened to fix the reciprocating cutting blade 1 between the upper and lower blade grinding table members 2 and 3. In this case, the positional alignment between the blade surface 8 to be ground of the reciprocating cutting blade 1 and the inclined surfaces 9 and 10 of the upper and lower blade grinding table members 2 and 3 is such that the blade surface 8 to be ground of the reciprocating cutting blade 1 per one blade Since there are three surfaces, the operation is carried out in consideration of the three positions shown with diagonal lines in FIGS. 1, 2 and 3 respectively. Grind the blade surface.

The upper and lower blade grinding table members 2 and 3 have hardened inclined surfaces 9 and 10 made of a super hard chip material or a super hard compound layer having the same inclination as the blade surface 8 of the reciprocating cutting blade 1. There are various methods for forming a super-hard compound layer. In this embodiment, a boron-containing layer is formed by diffusing and infiltrating boron into the surface of steel.
This hardened layer is very hard, has a hardness of HV1200 to 1800, and has sufficient abrasion resistance. After the alignment of the blade surface 8 to be ground of the reciprocating cutting blade 1 with the inclined surfaces 9 and 10 of the upper and lower blade grinding table members 2 and 3, the upper and lower blade grinding table members 2 and 3 are hardened and ground by a file or a hand grinder. Unstable slope 9.1
0, the blade surface 8 of the reciprocating blade 1
Is easily ground into a predetermined shape. Further, in this embodiment, an auxiliary member 11 for fixing the lower blade grinding table member 3 to the work table with a vice or the like is provided, and is used for fixing during grinding. The screw member 12 with which the wing nut 4 is screwed and the pin member 5 for positioning the upper blade grinding table member 2 are fixed to the lower blade grinding table member 3, respectively.
A spring member 13 that works in a direction to separate the upper blade grinding table member 2 from the lower blade grinding table member 3 in order to facilitate attachment and detachment of the reciprocating cutting blade 1.
Is installed. A spring member 14 is also provided on the push screw member 7 screwed into the bent portion 6 of the lower blade grinding table member 3 to set the pushing amount before the reciprocating cutting blade 1 is fixed by the upper and lower blade grinding table members 2 and 3. Is changing so that it does not change.

[0008]

As is apparent from the above description, according to the structure of the present invention, the reciprocating cutting blade is sandwiched from above and below, and the cutting edge of the reciprocating cutting blade has the same inclination as the blade surface of the reciprocating cutting blade. Equipped with a pair of upper and lower blade grinding table members having a hardened inclined surface, simple and reliable configuration of pin members, nut members, push screw members, etc., suitable for use with hand grinders, etc. Can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a reciprocating cutting blade grinding device according to the present invention.

FIG. 2 is a partial plan view showing another state of one blade of FIG. 1;

FIG. 3 is a partial plan view showing still another state of one blade section of FIG. 1;

FIG. 4 is a side view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reciprocating cutting blade 2 Upper blade grinding table member 3 Lower blade grinding table member 4 Tightening member 5 Pin member 7 Push screw member 8 Blade surface 9 Hardening inclined surface 10 Hardening inclined surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A reciprocating cutting blade (1), comprising a pair of upper and lower saw blades, which is reciprocally slidable in a longitudinal direction relatively by an eccentric cam, a crank mechanism or the like, and cuts plants and the like. The reciprocating cutting blade (1) is sandwiched from above and below and has a hardened inclined surface (9, 10) such as a super hard chip material or a super hard compound layer having the same inclination as the blade surface (8) of the reciprocating cutting blade (1). A pair of upper and lower blade grinding table members (2, 3), a pin member (5) for positioning the upper and lower blade grinding table members and guiding the reciprocating cutting blade (1); , 3), and pushes the reciprocating cutting blade (1) to press the blade surface (8) of the reciprocating cutting blade and the upper and lower blade grinding table members (2, 2).
3) The push screw member (7) for adjusting the relative position with respect to the inclined surfaces (9, 10), and the reciprocating cutting blade (1) is sandwiched and fixed between the upper and lower blade grinding table members (2, 3). A grinding member for a reciprocating cutting blade, comprising: