JPS5812124B2 - woodworking cutter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cutter for woodworking.

In a woodworking cutter having a rough cutting blade 1 and a finishing blade 2 as shown in FIGS. 1 and 2, the finishing blade 2 has conventionally been directly fixed onto a base plate 3.

That is, the finishing blade 2 and the back blade 6 were fastened to the oblique surface 5 of the groove 4 of the base plate 3 by two bolts 7.

When the cutting edge of this finishing blade 2 became worn, it was removed, the cutting edge was polished, and the blade was set in an appropriate position with the back blade 6 against the base plate 3. There was a problem in that it was extremely difficult and time-consuming to set the device so that it would draw the same trajectory when rotated, and required skill.

SUMMARY OF THE INVENTION An object of the present invention is to provide a woodworking cutter that eliminates the above-mentioned defects and eliminates the need to adjust the cutting edge of the finishing blade on the base plate.

An embodiment embodying the present invention will be described below with reference to FIGS. 3 and below. Reference numeral 11 denotes a circular base plate, the upper surface of which is obliquely inclined downward toward the outer periphery.

Reference numeral 12 denotes four rough cutting blades attached to the outer peripheral edge of the base plate 11, and pairs of blades face each other with an interval of 60 degrees.

Reference numeral 13 denotes a base metal to which each rough cutting blade 12 is attached, and is fixed onto the base plate 11 by screwing a bolt 14 into the approximate center of each blade from below.

Each base metal 13 is formed into an oval shape and is slightly elongated, and extends in the radial direction of the base plate 11 within a mounting recess provided on the base plate 11.

Reference numeral 15 indicates long holes formed in the base plate 11 through which the bolts 14 are inserted, and these holes, like the base metal 13, extend in the radial direction of the base plate 11.

Therefore, each base metal 13 can be adjusted to move in the radial direction of the base plate 1a together with the bolt 14.

Reference numeral 16 denotes a notch recessed in the outer peripheral edge of the base plate 11 on the cutting edge side of each rough cutting blade 12.

Reference numeral 17 denotes a pair of mounting recesses formed at the outer edge of the base plate 11 between the two pairs of rough cutting blades 12, each with a fourth recess.
As shown in Figure a, it passes through the base plate 11 up and down.

Each mounting recess 17 has a wide and deep exposure opening 18 formed in the upper half of the base plate 11, and a narrow mounting opening that communicates with the exposure opening and opens on the lower surface of the base plate 11 via a pair of steps 19. Mouth 20
It is made up of.

The stepped portion 19 has an oblique shape that is raised toward the outer peripheral edge of the base plate 11.

21 is a plane that is attached to each mounting recess 17 from above, and is approximately horizontal U.
The wide portions 2 each have a letter-shaped mounting base and are located within the exposed opening 18 of the mounting recess 17 as shown in FIG.
2, a narrow part 23 exposed downward from the mounting opening 20, and a connecting part 23a that connects both at the innermost part thereof.

The wide portion 22 rests on the pair of step portions 19 of the mounting recess.

A pair of bolts 24 correspond to each step 19 and are screwed into the wide portion 22 from below through the base plate 11.

Each mount 21 is fixed to the base plate 11 by these bolts 24, and each mount 21 can be removed and replaced with another mount.

A hole formed in the base plate 11 for inserting the bolt 24 is a long hole 25, and the long hole 25 extends in the same direction as the cutting width direction of the finishing blade 27, which will be described later.

Reference numeral 26 indicates a groove similar to the conventional one, which is formed vertically through each mounting base 21, and reference numeral 27, 28 indicates a groove formed on one of the slanted surfaces 29.
The finishing blade and the back blade are fixed with two bolts 30, and the vertical position of these cutting edges can be adjusted by moving the mounting base 21 to the base plate 11.
This is done in advance before installation.

Reference numeral 31 denotes a cutting edge with bolts 32 attached to the upper surface of the mounting base 21, facing the cutting edge of the finishing blade 27.

Since the step 19 of the mounting recess 17 is oblique, the cutting edge of the finishing blade 27 is also oblique, as shown in FIG.

Note that the stepped portion 19 of the mounting recess 17 may be formed horizontally, and in this case, the lower surface of the wide portion 22 of the mounting base 21 is formed obliquely so that the outer end thereof is rolled up.

Reference numeral 33 denotes a small-diameter disk cam rotatably attached to the upper surface of the stepped portion 19 of the mounting recess 17, and this cam is located at a corner of the mounting recess 17.

34 is an eccentric shaft of the cam 33.

Reference numeral 35 denotes a guide hole transparently provided in a part of the wide portion 22 of the mounting base 21 so that the disk cam 33 can be installed therein, and is formed in a long hole shape to allow rotation of the disk cam 33. There is.

The cutter configured as described above can perform chamfer cutting similar to conventional cutters.

In order to align the outer diameter line of the cutting edge on the outer periphery of the finishing blade 27, it is necessary to make a slight adjustment when machining the corners of various patterns to be described later.

At that time, the finishing blade 27 is moved together with the mounting base 21.

To adjust the movement of the outer diameter cutting edge line of the finishing blade 27, loosen the bolt 24 for fixing the mounting base 21, and then loosen the guide hole 3 of the mounting base 21.
This is done by rotating the disc cam 33 within the cam 5.

If the disk cam 33 is rotated clockwise about the eccentric shaft 34 in the state shown in FIG. 3, the mounting base 21 is moved outward along the inner wall of the mounting recess 17.

During movement, the bolt 24 is also moved outward within the elongated hole 25.

After moving, tighten the bolts 24 to secure the mounting base 21 on the base plate 11.

When polishing the finishing blade 27, the bolt 24 is removed and the finishing blade 27 is removed from the base plate 11 together with the mounting base 21.

Then, the finishing blade 27 is removed from the mounting base 21 and polished, and after polishing, the finishing blade 27 is set on the mounting base 21 again, and is attached to the base plate 11 together with the mounting base 21 in the attached state.

Therefore, if the finishing blade 27 is set with the mounting base 21 removed from the base plate 11 in this way, this setting can be done more easily than when it is done on the base plate 11, and Setting the finishing blade 27 on the base plate 11 is completely unnecessary.

It is convenient to separately prepare a plurality of mounts 21 with polished finishing blades 27 set thereon, as these can be immediately attached in place of the mounts removed from the base plate 11 for polishing the finishing blades 27. be.

When the rough cutting blade 12 is worn and polished, the base metal 13 is shifted straight outward along the elongated hole 15 of the base plate 11 to expose the cutting edge of the rough cutting blade 12.

If the cutting edge of the rough cutting blade 12 is adjusted by moving the base metal 13 straight outward in this way, unlike the case where the cutting edge is brought out by rotating the disc-shaped base metal, it is possible to adjust the cutting edge of each rough cutting blade by adjusting the blade edge. The rake angle and the nip angle do not differ from each other, and the adjustment range of the cutting edge can be widened.

Furthermore, in this way, it becomes possible to increase the thickness of the rough cutting blade 12.

The above-mentioned woodworking cutter does not perform normal corner processing.
-Various surface processing as shown in e is possible.

That is, as shown in FIG. 6a, a convex curved surface 41 is formed at the corner of the workpiece W, followed by a sloped surface 42 and a vertical surface 4.
3, the workpiece W is first placed on an L-shaped material feeding table 46 having a horizontal placing part 44 and a vertical regulating part 45 as shown in FIG. 7a.

Then, one corner of the processed material W is placed on the material feeding table 46.
It is exposed to the cutter side through a cutting opening 47 formed at the intersection of both the mounting and regulating parts 44 and 45.

The curved surface portion 41 of the workpiece W serves as the rough cutting blade 12 of the cutter.
A blade equipped with a blade that completely cuts the vertical surface portion 43 and the vertical surface portion 43 at the same time is used.

Then, the finishing blade 27 is set and the slope portion 42 of the workpiece W is finished by cutting with this finishing L27.

At this time, at the intersection 52 of the machining curved surface portion 41 of the rough cutting blade 12 and the slope portion 42 of the finishing blade 27, it is necessary to ensure that the outer peripheral cutting surface of the finishing blade 27 and the cutting edge curved surface portion 41 of the rough cutting blade 12 coincide with each other. In this case, by rotating the disc cam 33 described above, minute adjustments can be made and the setting can be easily performed.

After one corner is machined as described above, the workpiece W is turned over and the other corner is machined in the same manner.

When forming a vertically extending oblique surface 49 and a horizontally extending oblique surface 50 at the corner of the workpiece W as shown in FIG. 6,
As shown in FIG. 7, the workpiece W is placed on the same L-shaped material feeding table 46 as described above, and the rough cutting blade 12 of the cutter has a blade portion for cutting the upper and lower sloped surfaces 49. .

Then, the horizontal inclined surface 50 is finished by the finishing blade 27.

Further, as shown in FIG. 6C, a concave curved surface portion 51, a narrow vertical surface portion 43, and an inclined surface 5 extending in the horizontal direction are provided at the corner of the workpiece W.
0, the curved surface portion 51 and the vertical surface portion 43 are cut by the rough cutting blade 12 as shown in FIG.
The slanted surface 50 is finished by the finishing blade 27.

As shown in FIGS. 6d and 6e, when machining the corners of the workpiece W, a rough cutting blade 12 suitable for each shape is used.

In the above embodiment, as shown in FIG. 5, the upper part of the mounting base 21 of the finishing blade 27 was made into a wide part 22, and the lower part was made into a narrow part 23. However, as shown in FIG. The lower part may be the wide part 22.

In this case, the mounting recess 17 of the base plate 11 also has the ninth
, 10, a narrow exposure opening 18 is formed in the upper part, and a wide mounting opening 20 is formed in the lower part via a stepped part 19.

As described in detail above, the present invention provides a woodworking cutter that is equipped with a rough cutting blade and a finishing blade on a circular base plate. By removably mounting the blade in the recess, there is no need to mount the finishing blade on the base plate and adjust the cutting edge.Also, when machining various corner surfaces, the outer cutting edge line of the finishing blade can be easily adjusted. It is a practical invention that is excellent as a woodworking cutter because it has many effects such as being able to easily adjust the cutter.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional woodworking cutter, Fig. 2 is a cross-sectional view showing how the finishing blade is attached, Fig. 3 is a plan view of a woodworking cutter embodying the present invention, and Fig. 4a is a plan view of a conventional woodworking cutter. Fig. 5 is a perspective view of the mount, and Figs. 6 a to 6 e are illustrations of the present invention. Partial front view of the workpiece being cut with a wood cutter, Figure 7a ~
c is an explanatory view showing the state in which the workpieces of Figs. 6 a to c are processed, respectively, Fig. 8 is a perspective view of a mounting base in another embodiment of the present invention, and Fig. 9 is a plan view of the same woodworking cutter. , FIG. 10 is a side view similarly showing the mounting state of the mounting base. Base plate...11, Rough cutting blade...12, Mounting recess...
17. Mounting stand...21°

Claims (1)

[Scope of Claims] 1. In a woodworking cutter equipped with a rough cutting blade and a finishing blade on a circular base plate, the finishing blade is installed in the mounting recess of the base plate together with an integral mounting base to which a cutting edge is also attached. A woodworking cutter characterized in that the attachment is removable. 2. A woodworking cutter according to claim 1, characterized in that the mounting base is capable of adjusting the position of the finishing blade in the cutting width direction by a cam mechanism provided in the mounting recess. 3 In claim 2, the cam mechanism consists of a guide hole transparently provided in a part of the mounting base, and a disc cam rotatably mounted in the mounting recess so as to be inscribed in the guide hole. A woodworking cutter that is characterized by: