JPH10264108A - Finger cutter and method for grinding blade for finger cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the easy manufacturing of a cutter at a low cost and the forming of a uniform quality cutting edge on a blade. SOLUTION: In a finger cutter A formed by laminating adjacent base materials with blades 3, a base metal 1 comprises a first base metal 1a and a second base metal 1b, both being of an identical shape, lapped over each other as paired ones, and also has an anchorage receiving member 5 for anchoring the blades 3 fitted into the corresponding positions of recessed grooves 2 of the first base metal 1a with the help of an anchoring means 4, perforated in the second base metal 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finger cutter used in the wood processing industry and the like and a method of polishing a finger cutter blade object.

[0002]

2. Description of the Related Art Conventionally used in the wood processing industry, etc.
When processing vertical finger joints (see FIG. 8) used for vertical joint processing of glued laminated lumber, etc., it is performed using a rotary cutter that matches this finger shape.
For example, the one shown in FIG. 11 is known.

[0003] The cutter 50 has a plurality of sets of a cutter body 52 having a blade body 51 attached thereto, so that the cutter body 52 has a predetermined finger pitch. A blade body 51 is fitted on the back side, and a blade groove 54 to be fixed by a screw 53 is formed.

Further, a blade bag portion 55 formed to have a predetermined size from the front of the blade body 51 fitted into the blade groove 54 of the cutter body 52, and a section extending from the blade bag portion 55 to the back surface of the blade body 51. Is provided with a projection 56 having a tapered shape.

In the manufacture of the cutter body 52, the above-mentioned blade groove 54, blade bag portion 55 and projection 56 are formed by cutting with a blade tool such as an end mill. There are many, and production is difficult.

For this reason, the manufacturing cost of the cutter body 52 is greatly increased, and it is impossible to provide a low-cost cutter on the market.

Further, a large number of blades 51 are fitted in the blade grooves 54 of the cutter body 52. However, since the blades 51 are individually polished during wear or the like,
The degree of polishing is different from each other. When the cutter 50 is attached to the cutter main body 52 to form the cutter 50 and the fingers are formed on the material and the male and female materials are joined together, the respective finger shapes are different and the gaps are formed at the joints. Causes inconvenience. And other various problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and is directed to a finger cutter formed by laminating a large number of bases with blade objects side by side. The gold has a pair of a first metal and a second metal having the same shape overlapped with each other, and corresponding to the concave groove position of the one metal, the other metal has a concave shape of the one metal. By providing a fixing receiving member for fixing the blade object inserted into the groove by the fixing means, the cutter can be easily manufactured, formed at low cost, and a uniform cutting edge of the blade object can be obtained. It is an object of the present invention to provide a finger cutter and a method for polishing a finger cutter blade object.

[0009]

According to a first aspect of the present invention, there is provided a blade body having a blade body and a base having a concave groove into which the blade body is inserted. In a finger cutter formed by laminating a plurality of base metals side by side, the base metal is formed by superposing a pair of a first base metal and a second base metal having the same shape, and forming one of the superposed bases. The finger cutter has a configuration in which a fixing receiving member for fixing, by fixing means, a blade object inserted into the concave groove of the one base metal to the other base metal corresponding to the concave groove position of the gold.

The base metal is formed by superposing a pair of a first base metal and a second base metal having the same shape, and corresponding to the concave groove position of one of the superposed base metals, the other base metal. Then, a fixing receiving member for fixing the blade object inserted in the concave groove of the one base metal by a fixing means is formed, and these first and second base metals are connected by a fastening member.

Further, the blade object is provided with a blade edge at both ends, a blade edge at one end protrudes from the base metal, and a blade edge at the other end is accommodated in a concave groove.

A finger cutter having a blade object and a base having a concave groove into which the blade object is inserted, wherein the finger cutter is formed by laminating a plurality of base metals with the blade object side by side, The blade object is inserted into a mounting groove provided in the holder, the back of the blade object is brought into contact with one side wall of the holder, and the other side of the blade edge of the blade object is brought into contact with the inner wall of the holder. There is provided a method for polishing a finger object for a finger cutter in which a plurality of parallel blades are provided, the rake face of the blade object is aligned with one side, and then fixed to a holding body by a fixing means, and then the blade is polished by a polishing means.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a finger cutter and a method for polishing a finger cutter blade object according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 3 and 7, A denotes a finger cutter, which is used in the wood processing industry and the like, for example, for vertical joining of laminated wood and the like, as shown in FIG. 8. Used for processing and the like.

The first embodiment is shown in FIGS. 1 to 3 and basically includes a base metal 1, a concave groove 2, a blade body 3, a fixing means 4, and a fixing receiving member 5. Be composed.

The base metal 1 is formed of a steel material or the like into a substantially disc shape having a predetermined thickness, and a mounting hole 6 is formed in the center of the base metal 1 to be attached to a rotating spindle (not shown) of a cutting machine. As shown in FIGS. 3 and 4, a pair of a first base metal 1a and a second base metal 1b having the same shape is formed by overlapping.

The concave groove 2 is formed at a plurality of locations, for example, two locations (two locations or less or two locations or more) on the peripheral surface of a pair of the first base 1a and the second base 1b in the base 1. In some cases.).

In the above-described base 1, in the case where the pair of the first base 1a and the second base 1b are superposed,
As shown in FIG. 1 and FIGS. 3 and 4, the concave grooves 2 provided at two locations are attached with a phase difference of about 90 degrees which does not overlap.

The above-mentioned blade body 3 is of a replaceable blade type that can be polished, for example, as shown in FIG. 5, is formed in a diamond shape using a cemented carbide or the like, and as shown in FIG. In addition, the cutting edge 3a is provided at one end thereof, or as shown in FIG. 5B, the cutting edges 3a and 3b are provided at both ends thereof so as to correspond to the half pitch of the finger shape.

As shown in FIG. 5 (c), the blade body 3 is mounted on the base 3c in the form of chip-shaped blades 3a, 3b made of carbide or the like.
May be fixed by brazing or the like.

Then, the base 1 is accommodated in a concave groove 2 provided in the first base 1a and the second base 1b, and the back 3d surface of the blade object 3 is brought into contact with one side wall of the concave groove 2. And fixed to the base metal 1 by the fixing means 4 described later.

At the time of this mounting, the outer ends 3c or the flank 3e of the blade body 3 are brought into contact with the bottom wall of the concave groove 2, so that the blades 3a and 3b are uniformly aligned.

The fixing means 4 is for fixing the blade body 3 inserted in the concave groove 2 so as not to protrude in the diametrical direction and not to move in the axial direction. In the case shown in FIGS. 3 and 5, the fixing receiving member 5 such as a screw hole screwed into the first base metal 1 a and the second base metal 1 b is screwed through the stopper hole 7 formed in the blade body 3. Use external screws such as countersunk screws.

In the case shown in FIG. 7, the concave and convex portions on the front and rear surfaces of the blade body 2 are aligned with the concave and convex fixing means 4 engraved on the first and second metal bases 1a and 1b. An uneven fixing receiving member 5 that meshes with the fixing means 4 is engraved.

The fixing means 4 formed in the uneven shape
Although not shown, the fixing receiving member 5 may be discontinuous, or may have a relatively large gouge or bulged single shape, and the shape is not limited. The fixing means 4 and the fixing receiving member 5 each have a relative male and female shape.

Alternatively, although not shown, the blade object 3 and
The first base metal 1a and the second base metal 1b may be formed by fixing means 4 using caulking means such as conventional one, or by fitting the blade body 3 into the concave groove 2.

In FIGS. 1 and 5, reference numeral 10 denotes a fastening member for connecting the first base metal 1a and the second base metal 1b. In FIG. 1a, in the vicinity of the concave groove 2, through holes 11 provided on both sides thereof (this drilling position can be provided at any position).
This set screw 10 that has been inserted through is
b and screwed into the screw hole 12 and tightened to firmly couple the two 1a and 1b.

The through holes 11 formed in the first base metal 1a and the second base metal 1b correspond to the countersunk screw-shaped fastening members 10, and are countersunk in FIG. As shown in b), the two metal bases 1a, 1b are provided opposite to each other (with different hand) so that the same metal bases 1a, 1b are respectively provided. , 1b.

As shown in FIG. 5 (c), the through hole 11 is also formed such that the first base metal 1a and the second base metal 1b are half sifted from both sides of the first base metal 1a and the second base metal 1b. The base metal 1a and the second base metal 1b may be shared by the same member.

Further, the fastening member 10 may be connected by a conventional caulking means, welding or the like.

Therefore, the embodiment of the present invention configured as described above is applicable to the first base 1 a and the second base 1 in the base 1.
b is overlapped with a pair of concave grooves 2 formed at two locations with a phase difference of 90 degrees to form one unit of base metal 1 as shown in FIG.

After the blade object 3 is inserted into the concave groove 2 of each of the first metal base 1a and the second metal base 1b on the front and back of this one unit of the base metal 1, it is inserted into the stop hole 7 of the blade body 3. When the blade body 3 is tightened by being screwed into a fixing receiving member 5 such as a screw hole provided in each of the first base metal 1a and the second base metal 1b through a fixing means 4 such as a countersunk screw, the blade object 3 is fixed. , And diametrical and axial delusions are prevented.

When one unit of the base metal 1 with the blade object 3 formed in this way is overlaid, for example, around ten sets,
As shown in FIG. 2, the finger cutter C in one block shape is easily and simply formed.

At this time, the first base metal 1a and the second base metal 1b of the base metal 1 are fitted into the mounting spindle 6 through a connecting member (not shown) to the rotating main shaft of the cutting machine. If the block-shaped finger cutters C are fixed in the axial direction, they are connected without being separated from each other.

If the two bases 1a and 1b are easily separated when the blade body 3 is attached to the concave groove 2,
As shown in FIGS. 1 and 3, for example, a first base metal 1a and a second base metal 1b are passed through a fastening member 10 such as a set screw from a through hole 11 of one of the bases 1a, and a female screw of the other base 1b. By screwing into the holes 12, the two base metals 1a and 1b are connected.

The blade body 3 used for the above-mentioned finger cutter C is supported by a holder 20 as shown in FIGS. 9 and 10, and the blade edges 3a and 3b are polished all at once.

The holder 20 is provided with a lateral mounting groove 21 having substantially the width of the blade object 3 on one side thereof. The blade object 3 is inserted into the mounting groove 21 and The back 3d is brought into contact with one side wall 20a of the holder 20.

At this time, the other side surface of the cutting edge of the blade object 3 is brought into contact with the back wall 20b of the holding body 20.
When the cutting edge 3a is provided only on one side, the outer end 3c
And, as shown in FIGS. 6B and 6C, the blade object 3
When the cutting edges 3a, 3b are provided at both ends of the holding member 20, the flank 3e is brought into contact with the back wall 20b of the holding body 20, and the back wall 20b serves as a reference surface, and the cutting edges 3a, 3b.
Of the blades 3a and 3b when the blade object 3 is mounted in the concave groove 2 of the base metal 1 is improved.

Then, these blade objects 3 are inserted into the mounting grooves 21.
Rake face on the blade object 3 (blade tip)
Are fixed to one side, and the holding member 20 is fixed by the fixing means 22.
To stop.

The fixing means 22 is, as shown in FIG.
A coupling screw 25 linked to holding plates 23 and 24 provided on both sides of the holding body 20 is passed through a stop hole 7 penetrated through the blade body 3, and these blade bodies 3 are fixed by tightening the group of blade bodies 3 with screws. Is made.

Further, in the case shown in FIG. 10, a coupling screw 25 linked to holding plates 23 and 24 provided on both sides of the holding body 20 is passed through a stop hole 7 penetrated through the blade body 3, and The third group is tightened with screws, and
In the mounting groove 21 provided on the other end, a pressing body 26 is disposed on the other back 3d of the blade body 3 abutting on one side wall 20a of the holding body 20, and this pressing body 26 is provided from the outside of the holding body 20. It is fixed by the operation of the holding member 27 such as the operated screw.

After the group of blade objects 3 is fixed, the blade edge 3a is polished by a polishing means 28 such as a generous grinder. At this time, the blade edge 3a (the rake face) is as shown in FIG.
As shown in (2), the heights h are uniformly adjusted by the holder 20, whereby the edge polishing by the polishing means 28 is uniformly performed on any blade object 3, and When the finger metal cutter A is formed by assembling a large number of these base metals 1 after being attached, the protrusions and shapes of the cutting edges are aligned, and a desired accurate finger shape can be obtained in the material.

When the blade body 3 is a double-blade type, the blade edges 3a and 3b are reversed with respect to the mounting groove 21 of the holder 20, and the above-described steps are performed in the same manner to polish the blade edge.

[0044]

The present invention constructed as described above is formed by laminating a large number of bases with a blade object having a base having a concave groove into which the blade object is inserted and adjacent to each other. In the finger cutter, the base metal is overlapped with a pair of a first base metal and a second base metal having the same shape, so that the base metal of one unit as a reference is a simple and cumbersome processing step. Formed without going through.

Further, since the one base unit is composed of the first base unit and the second base unit having the same shape, the number of components can be reduced as much as possible, and the whole apparatus can be manufactured at low cost. Can be manufactured.

Further, by connecting the first base metal and the second base metal with a fastening member, the connection between the first base metal and the second base metal is ensured.

Further, a number of blade objects mounted on the base metal are mounted on the holder and polished by the polishing means so that the respective blade edges are uniformly arranged, and the finger shape formed by the finger cutter is uniform. Can be processed. And the like.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a finger cutter according to the present invention.

FIG. 2 is a sectional view of the device shown in FIG.

FIG. 3 is an exploded perspective view showing the device in FIG. 1;

FIG. 4 is a perspective view showing a connected state of first and second bases in FIG. 1;

FIG. 5 shows one unit of the base metal in FIG. 1;
(A) is a vertical cross-sectional view of a blade object mounting portion, (b) is a vertical cross-sectional view of a mounting portion of a pair of bases, and (c) is a cross-sectional view illustrating another example of a through hole of the pair of bases. .

FIG. 6 is a front view showing each example of the blade object in FIG. 1;

FIG. 7 is a front view of a main part showing another example of attachment of the blade object in FIG. 1;

FIG. 8 is a perspective view of a main part showing a finger joint material formed by the apparatus shown in FIG. 1;

FIGS. 9A and 9B show a holder used for polishing the blade object of the finger cutter according to the embodiment of the present invention, wherein FIG. The side view which shows an attachment state is each shown.

FIG. 10 is a longitudinal sectional side view of a main part showing another example of the holding body in FIG. 9;

FIG. 11 shows a conventional finger cutter, in which (a)
1 shows a cross-sectional view of a main part, and FIG. 1B shows a front view of the main part.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base metal 1a first base metal 1b second base metal 2 concave groove 3 blade object 3a, 3b blade edge 3c blade other side surface 3d back 4 fixing means 5 fixing receiving member 10 fastening member 20 holding body 20a one side wall 20b of holding body Back wall of holder 21 Mounting groove 22 Fixing means 28 Polishing means

Claims (4)

[Claims] 1. A finger cutter comprising: a blade body; and a base having a concave groove into which the blade object is inserted. A finger cutter formed by laminating a plurality of bases with the blade object side by side. The base metal has a pair of a first base metal and a second base metal having the same shape overlapped with each other, and the other base metal corresponds to the concave groove position of one of the stacked base metals. A fixing receiving member for fixing the blade object inserted into the concave groove of the base metal by fixing means. 2. A finger cutter, comprising: a blade object; and a base having a concave groove into which the blade object is inserted. The base metal has a pair of a first base metal and a second base metal having the same shape overlapped with each other, and the other base metal corresponds to the concave groove position of one of the stacked base metals. A finger receiving member for fixing the blade object inserted into the concave groove of the base metal by a fixing means, and connecting the first and second base metal with a fastening member. . 3. The blade object is provided with cutting edges at both ends thereof,
3. The finger cutter according to claim 1, wherein the blade at one end protrudes from the base metal, and the blade at the other end is accommodated in the concave groove. 4. A finger cutter, comprising: a blade object; and a base having a concave groove into which the blade object is inserted. A finger cutter formed by laminating a plurality of bases with the blade object side by side. The blade object is inserted into a mounting groove provided in the holder, the back of the blade object is brought into contact with one side wall of the holder, and the other side of the blade edge of the blade object is brought into contact with the inner wall of the holder. A plurality of parallel blades are provided, and after the rake face of the blade object is aligned with one side and fixed to the holding body by a fixing means, the blade edge is polished by the polishing means. Method.