JPH0215611Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The invention enables disposable blades to be replaced without requiring any skill, in a knife stock that can be freely inserted and removed from a plane board.
A woodworking machine in which a spare blade holding plate, which simply presses and clamps a spare blade on the inclined blade mounting surface provided on the knife stock, can be moved slightly in the vertical direction by an eccentric flange adjustment screw provided on the inclined blade mounting surface. This relates to a replaceable blade type knife stock for a super finishing planer.

(Prior Art) A replaceable knife stock using a disposable blade that replaces a conventional planer blade is disclosed in Japanese Utility Model Publication No. 1767/1982 and Japanese Patent Application Laid-open No. 11201/1983. The former type of knife stock has a thin replacement blade with multiple mounting holes parallel to the blade edge, and can be fixed with a plane blade-shaped knife holder without a blade, a back blade-shaped knife holder, and screws. The knife holder has a recess on the mounting surface for fitting the replacement blade to the tip edge, and a blade traction device (pin member) that fits into the above-mentioned mounting hole of the replacement blade. After fitting the knife traction tool into the hole, fix the holder to the knife holding plate to sandwich the spare blade, and then attach the fixing body of the knife holding plate and knife holder to the inclined mounting surface that corresponds to the blade opening of the knife stock body. The knife holder, which corresponds to the replaceable blade holding plate of the present invention, is not directly attached to the above-mentioned inclined mounting surface, nor is it designed to be able to move slightly up and down while it is attached.

The latter is fixed immovably to the lower arm of the knife stock body with a screw, and is provided with a knife holder having a pin member protruding from the blade mounting surface which is recessed at an oblique angle at the tip, and the blade mounting surface A replaceable blade is fitted into the replaceable blade, a long mounting hole formed in the replaceable blade is fitted into a pin member, and the replaceable blade is clamped by a replaceable blade holding plate that is attached to the knife stock such as the arm. , the upper surface of the holding plate is the material feeding surface, but since the cutter holder is fixed to the arm with screws as described above and cannot be moved, the holder cannot be moved up or down depending on the wood quality of the processed material. Not only can the blade not be moved and used, but even if superalloy is used at the tip of the holder that supports the blade, it is inevitable that the tip will wear out. If you correct it by polishing it, the area that receives the replacement blade will decrease and the cutting edge will protrude relatively, so there is no other option but to replace it.

(Problem that the invention aims to solve) Since the replacement blade must be made as thin as 1.5 to 2.0 mm to reduce the unit price as much as possible, the configuration must be adapted accordingly. To do this, it is necessary to provide a mounting hole etc. in the replaceable blade itself to prevent it from being oversized. When the wood hardness of the workpiece is high, move the blade holding plate that receives the replaceable blade upward, and when it is soft, move the holding plate up and down to change the cutting resistance.
Otherwise, it must be ensured that no adverse effects occur. Since the knife stock that includes the blade retainer plate is used semi-permanently, there are many problems such as making it possible to continue using it by polishing it even if the tip edge of the blade retainer plate is worn away by shavings, etc. There are conditions. The problem of this invention is to find a solution that can satisfy these various points.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems, and its purpose is to form an inclined knife mounting surface corresponding to the cutting edge of the knife stock, and to fix the mounting surface. A removable blade holding plate is attached to the surface with a mounting screw, and a concave stepped surface that approximately matches the thickness of the disposable blade is provided on the upper edge of the inclined blade mounting surface facing the material feeding surface, An eccentric head with an operating part is provided on the adjustment screw screwed into the inclined blade mounting surface, and the eccentric head is brought into contact with the upper and lower edges of the horizontally long through hole formed in the replacement blade holding plate. Further, the operating portion is exposed in the through hole, a disposable blade is disposed on the concave stepped surface, and the disposable blade is clamped and fixed by the blade holding plate.

In the present invention, "up and down" refers to the direction perpendicular to the cutting edge of the upper edge of the replaceable blade, and "left and right" refers to the direction of the cutting edge.

(Embodiment and its operation) The attached drawing shows an embodiment of the present invention, in which, as is known, first, second,
As shown in Figures 3, 7, and 8, the block 2 for attaching the blade mounting plate and the block 3 for attaching the blade support plate, each of which is long in the left and right direction, are formed with a distance L between them. On the bottom surface of 2, there are several step holes 4 that are slightly longer in the left and right direction, as shown in Figures 2 and 7.
A circular hole 5 is formed on one side of the block 3 in the left and right directions from the bottom surface of the block 3. A guide surface 6 is provided on the top surface and is inclined in one direction from left to right. A communication groove 7 is provided that communicates with the. Block 3
Several step holes 9 are formed in the left and right direction on the lower surface of the upper surface 10.
A circular hole 5a is formed on one side in the left and right direction, and a guiding surface 6 is formed on the upper surface 10 and inclined in one direction in the left and right directions.
a, and a communication groove 7a communicating with the upper surface 10 is provided in the upper wall of the circular hole 5a (see FIG. 8).

On the inclined guiding surface 6 of the block 2, as shown in FIGS. 2 and 7, a cutting edge mounting plate 11 is provided with a sliding surface 12 tilted symmetrically to the guiding surface 6 on the lower surface, and the upper surface 13 is a horizontal surface. Place the inclined guide surface 6
Concave grooves 8 and 14 into which the guide key 15 is inserted are provided symmetrically on the corresponding surface of the sliding surface 12. Also circular hole 5
An adjustment screw 16 is fitted into the hole so that the collar 17 is in close contact with the inner surface of the hole so that it can rotate freely but cannot move in the axial direction, and the movable piece 18 is screwed into the screw portion.
passes through the communication groove 7 and projects onto the inclined guide surface 6.
A fitting hole 19 into which the movable piece 18 is tightly fitted is provided on the lower surface of the blade mounting plate 11. 20 is the blade mounting plate 1
This is a lifting prevention screw embedded in the upper surface of the movable piece 18 and screwed into the movable piece 18. A cutting edge plate 21 is fixed to the upper surface 13 of the cutting edge mounting plate 11. Blade mounting plate 11
The mounting screw 52 is passed very loosely through the bottom surface of the step hole 4 of the block 2 and is screwed into the screw hole 51. A spring 55 is applied to the lower surface of the blade and a ring plate 54 through which a mounting screw 52 is passed, and a spring 55 is hung between the blade and the ring plate 54, so that the blade mouth mounting plate 11 can be moved left and right without loosening the mounting screw 52.

As shown in FIG. 8, the inclined guide surface 6 of the block 3
A is provided with a sliding surface 12a on the lower surface that is inclined symmetrically with the guiding surface 6a, and an upper surface 22a.
A knife support plate 22 with a as a horizontal plane is placed thereon, and grooves 8a and 14a into which guide keys 15a are inserted are symmetrically provided on corresponding surfaces of the inclined guide surface 6a and the sliding surface 12a. Further, an adjusting screw 16a is fitted into the circular hole 5a, with the flange 17a in close contact with the inner surface of the hole so that it can rotate freely but cannot move in the axial direction, and a movable piece 18a is screwed into the screw portion. is passed through the communication groove 7a. The blade support plate 22 is provided with a fitting hole 19a on the lower surface in which the movable piece 18a is tightly and rotatably fitted.

Reference numeral 20a designates a lifting prevention screw embedded in the upper surface of the blade support plate 22 and screwed into the movable piece 18a.

The blade mounting plate 11 and the blade support plate 22 synthetically slide left and right and move up and down by rotating the adjusting screws 16 and 16a to match the material feeding surface of the cutting table, as well as to cut the workpiece. The thickness is determined by vertical adjustment of the blade mounting plate 11.

The blade support plate 22 includes the blade plate 2 of the blade mounting plate 11.
An inclined blade mounting surface 24 is provided opposite to the blade 1 with a small distance S therebetween. The knife support plate 22 is the guiding surface 1
0, and then screw the mounting screw 57 passed through the step hole 9 from the bottom surface of the block 3 into the screw hole 56 to attach it. By this attachment, the upper surface 22a becomes the material feeding surface of the material feeding table (not shown). matches in the horizontal direction. As shown in FIG. 2, the mounting screw 57 has a configuration in which a spring 60 is hung between the head piece 58 at the lower end and a ring plate 59 that is locked to the lower surface of the stepped portion of the stepped hole 9 and through which the mounting screw 57 is passed. Make it.

The inclined blade mounting surface 24 has a replaceable blade a on the tip edge facing the material feeding surface constituted by the upper surface 22a of the blade support plate 22.
A concave step surface 25 is provided, which is made to approximately match the thickness H of the blade, and also approximately match the length D in the front-rear direction, and in which the cutting edge W protrudes from the material feeding surface, and a blind hole 26 is provided on the underside thereof. Mounting screw holes 27 are arranged horizontally below the blind holes 26, and a pair of adjusting screw holes 28 are provided slightly below the screw holes 27.

Reference numeral 31 denotes a replacement blade holding plate which is attached closely to the inclined blade mounting surface 24 to cover most of the concave stepped surface 25, and its shape is the same as the back plate of a normal planer board. This replacement blade holding plate 31 has a screw hole 32 with a slightly larger diameter that matches the mounting screw hole 27 provided on the inclined blade mounting surface 24, and an oval hole 33 that is long in the left and right direction and matches the adjustment screw hole 28. and.

A mounting screw 41 that is loosely inserted through the screw hole 32 is screwed into the mounting screw hole 27 to fix the replaceable blade holding plate 31 to the inclined blade mounting surface 24 .

An adjustment screw 44 is screwed into the adjustment screw hole 28 . This adjustment screw 44 rotates by a small angle, and the eccentric flange 45 is rotated within the oval hole 33 of the replaceable blade holding plate 31 to adjust the holding plate 31 in the vertical direction.
This adjustment is performed by loosening the mounting screw 41. The adjustment screw 44 is used to adjust the movement of the replaceable blade holding plate 31 in the vertical direction.

An adjustment screw 44 is screwed into the adjustment screw hole 28 . The adjustment screw 44 is provided with an eccentric flange 45 having an operating part 46 into which a hair dryer or the like is inserted.
5 is inserted into the oval hole 33 of the replaceable blade holding plate 31 and comes into contact with the edge of the hole 33, so that the operating portion 46 is exposed from inside the oval hole to the outside as shown in FIG. A pressing spring 47 is fitted into the blind hole 26 and comes into elastic contact with the replaceable blade holding plate 31.

In this embodiment, the block 3 of the knife stock body 1 is
Remove the blade support plate 22 from the holder, loosen the mounting screws 41, press the upper end of the replaceable blade retainer plate 31 with the press spring 47, and press the upper end of the retainer plate 31 with the help of the elasticity of the press spring 47 (the press spring 47 is not necessarily required). ) Remove the blade a from the inclined blade mounting surface 24 in the direction of arrow x in FIG.
Loosen the pressure on the blade to create an opening, replace the old and new blade a, tighten the mounting screw 41 again, clamp the new blade a in place, and place it on the jig table as shown in Figure 9. Place the blade support plate 22 face down with the upper surface 22a facing down. Although the blade mounting base 11 is not removed from the block 2, it is also shown in a state where it is removed and placed face down on the jig base with the top surface 13 facing down.

After placing the knife on the jig table, lower the block 3 of the knife stock body 1 so that it fits on the knife support plate 22 (if the knife mounting plate 11 is also removed, remove the block 2 from the plate at the same time). 2), pass the mounting screw 52 through the upward stepped hole 9, and screw it into the screw hole 56. (The above also applies when attaching the blade mounting plate 11 to the block 2 using the mounting screws 52).

To replace the spare blade a, move the blade mounting plate 11 to the block 2.
This can be done simply by opening the upper end edge of the replacement blade holding plate 31 while it is still attached to the mounting surface 25, as described above.

(Function of the present invention) When the wood of the processed material is hard, the replaceable blade holding plate 31 is
Move the plate 31 upward to make the protrusion of the spare blade a about 0.2 to 0.3 mm from the upper edge. If the wood is soft, move the plate 31 downward to reduce the protrusion by 0.3 mm.
The cutting resistance is changed to approximately 0.4 mm to prevent roughness of the cutting surface and occurrence of reverse marks.When the upper edge of the plate 31 is worn away by cutting chips, it is polished and moved upward to the same level as when it was first used. However, in that case, insert a screwdriver, hexagonal bar, etc. into the operating part 46 of the adjustment screw 44 and rotate it, rotate the eccentric collar 45 within the oval hole 33, and push the upper edge of the oval hole 33 with the eccentric collar 45. Even if the tip edge of the holding plate 31 is polished and corrected in order to cope with the inevitable wear, the above-mentioned vertical movement can be easily carried out, so that the replaceable blade a can be moved to a predetermined position on the underside of the holding plate 31. By moving the blade, you can always clamp the blade in the same way, and there is no need to replace it. To move the replacement blade holding plate 31 up and down by rotating the adjustment screw, loosen the mounting screw 41 and allow slight movement up and down through the screw through hole 32, which has a larger diameter than the mounting screw 41. .

(Effects of the present invention) In the present invention, a concave step surface 25 into which a replaceable blade is fitted is formed on the inclined cutter mounting surface 24, and the replaceable blade a of the concave stepped surface 25 is sandwiched by closely contacting the inclined cutter mounting surface 24. Loosen the tightening of the mounting screw 41 that tightens the replaceable blade retainer plate 31 by passing it through the screw hole 32 having a diameter larger than the mounting screw 41 in the replaceable blade retainer plate 31 to be attached, and open the concave stepped surface 25.
After replacing the replaceable blade a, the replaceable blade holding plate 31 is tightened and fixed to the mounting surface 24 using the mounting screw 41, thereby facilitating the replacement of the replaceable blade a and the clamping of a new replaceable blade a. In addition to being effective, loosen the mounting screw 41 slightly to the extent that the spare blade a does not fall off.
The adjusting screw 44, which has an eccentric flange 45 located in an oval hole 33 formed in the replacement blade holding plate 31 and screwed onto the inclined blade mounting surface, is rotated by a small angle, and the eccentric flange 45 moves the replacement blade holding plate 31 upward or downward. By slightly moving downward, the degree of protrusion of the cutting edge of the replaceable blade a from the replaceable blade holding plate can be easily adjusted to suit the hardness and softness of the wood to be cut. This has the effect of being able to respond to cutting corrections.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a side view of the knife stock cut at the mounting screw 41, and FIG. 3 is a side view of the knife stock cut at the adjustment screw 44. 4 is a partially enlarged view of FIG. 3, FIG. 5 is a perspective view of a portion of the mounting step surface 25, FIG. 6 is a plan view of the replaceable blade holding plate 31, and FIG. 7 is a partially enlarged view of FIG. FIG. 1 is a cross-sectional view taken along the line A--A, FIG. 8 is a cross-sectional view taken along the line B--B, and FIG. 9 is a side view showing an example of how the knife support plate 22 is assembled to the knife stock body 1. An example of how to assemble the blade mounting plate 11 is also shown. 1...Knife stock body, 22...Blade support plate, 24...Slanted knife mounting surface, 25...Mounting step surface, 31...Replaceable blade holding plate, 33...Oval hole, 44
...Adjustment screw, 45...Eccentric collar, 46...Operation unit, a...Replaceable blade.

Claims (1)

[Scope of claim for utility model registration] In a replaceable knife stock that can be freely inserted and removed from the cutting table of a super-finishing planer, the knife stock is provided with an inclined knife mounting surface that corresponds to the blade opening, and the knife stock is mounted on the mounting surface. A replaceable blade holding plate having a threaded hole with a diameter larger than the screw is attached to the inclined blade mounting surface using a mounting screw passed through the screw threading hole, and the replaceable blade is attached to the upper edge of the inclined blade mounting surface facing the material feeding surface. A concave stepped surface that almost matches the thickness of the blade is provided, and an eccentric flange is provided on the operating part of the adjustment screw screwed into the inclined blade mounting surface, and an eccentric flange is provided on the operating part of the adjustment screw screwed into the inclined blade mounting surface. A woodworking machine characterized in that a disposable blade is arranged in contact with the hole and an operating part thereof is exposed in the hole, a disposable blade is arranged on the concave stepped surface, and the blade is clamped and fixed by the blade holding plate. Replaceable blade type knife stock for super finishing planer.