JPH0246968Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is based on a knife stock that can be freely inserted and removed from a plane board, and a disposable blade is installed between the concave stepped surface and the blade holding plate, which is provided on the inclined blade mounting surface. This invention relates to a replaceable blade type knife stock for a super-finishing planer for woodworking that can be inserted and replaced through a gap without requiring any skill.

(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 spare blade with multiple mounting holes parallel to the blade edge, and a plane blade-shaped knife holder with no blade can be fixed with screws to a blade-less knife holder. , a recessed mounting surface into which the replaceable blade is fitted to the tip edge of the knife holder, and a cutter traction device (pin member) fitted into the above-mentioned mounting hole of the replaceable blade are provided, and the replaceable blade is placed on the mounting surface of the knife holder; After fitting the knife traction tool into the mounting hole, fix the holder to the knife holding plate and sandwiching the spare blade, then fix the knife holding plate and the knife holder to the inclined mounting surface provided corresponding to the blade opening of the knife stock body. The knife holder, which corresponds to the blade holding plate of the present invention, is not directly attached to the above-mentioned inclined mounting surface, nor is the blade capable of being replaced 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 replacement blade is fitted into the blade, a long mounting hole formed in the replacement blade is fitted into a pin member, and the replacement blade is clamped by a replacement blade holding plate that is attached to the knife stock body such as the arm, The upper surface of the holding plate is the material feeding surface. Therefore, the above-mentioned replaceable blade holding plate has an intermittent dovetail groove on the lower surface, and moves in the left and right direction relative to the headed pin protruding from the knife stock to fit the dovetail groove and pass through the replaceable blade and the long hole of the replaceable blade. Therefore, the replaceable blade cannot be replaced unless the replaceable blade holding plate is completely removed.

(Problem that the invention aims to solve) Replaceable blades must be made as thin as 1.5 to 2.0 mm to reduce the unit price as much as possible, but conventional super-finishing plane machines that use replaceable blades are In order to make the replacement blade larger by providing a mounting hole in the replacement blade, the degree of machining is increased, and replacement is not easy. However, replacement blades are disposable, and they can be used several times a day.
Requires replacement dozens of times. The present invention aims to solve the problems of attaching and clamping the replaceable blade, as well as a structure for easy replacement even by an unskilled person.

(Means for solving the problem) The purpose of the present invention is to solve the above-mentioned problem. The plate is attached with a mounting screw, and a concave stepped surface that approximately matches the thickness of the replacement blade is provided on the upper edge of the inclined blade mounting surface facing the material feeding surface, and a concave stepped surface that approximately matches the thickness of the replacement blade is provided. A gap can be provided between the upper sides of the mounting screws on the lower side of the stepped surface to separate the replaceable blade retaining plate from the blade mounting surface while the replaceable blade is attached, and a disposable replaceable blade can be inserted through the gap and the The replaceable blade is disposed on the concave stepped surface of the replaceable blade, and the replaceable blade is clamped by the replaceable 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) The attached drawing shows an embodiment of the present invention, in which, as is well known, first, second, and third knife stock bodies 1 are provided on a knife stock body 1 that can be freely inserted into and removed from a cutting table of a super-finishing plane machine.
As shown in the figure, the block 2 for attaching the blade mounting plate, which is long in the left and right direction, and the block 3 for attaching the knife support plate are integrally formed with a distance L between them. Several step holes 9 are provided in the left and right direction and are transparent to the top surface.

A cutting edge mounting plate 11 having a cutting edge plate 21 fixed to an upper surface 13 is mounted on the block 2 in an overlapping manner.

Reference numeral 22 denotes a knife support plate which is opposed to the knife edge plate 21 of the knife edge mounting plate 11 with a small distance S therebetween,
An inclined knife mounting surface 24 is provided corresponding to the cutting edge plate 21 (see FIG. 2). The blade support plate 22 is joined to the upper surface of the block 3, and the threaded portion of the mounting screw 57, which is passed through the stepped hole 9 from the bottom surface of the block 3 and whose head is engaged with the stepped hole, is inserted into the screw hole 56 of the blade support plate 22. By this attachment, the upper surface 22a of the blade support plate 22 matches the material feeding surface of the material feeding table (not shown) in the horizontal direction.

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 adjustment 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.

A pressing spring 47 is fitted into the blind hole 26 and comes into elastic contact with the replaceable blade holding plate 31. By loosening the mounting screw 41, the pressing spring 47 moves the replaceable blade holding plate 31 to the concave stepped surface 2.
5 to create the gap s shown in FIG. 8. In addition, as shown in FIG. A pressing screw hole 61 perpendicular to the mounting surface 24 is provided between the mounting screw hole 27 and the pressing screw 62 is screwed into the screw hole 61,
It is also possible to loosen the mounting screw 41 and then push the replaceable blade holding plate 31 with the pushing screw 62 to create the gap s as in FIG. 8. The threaded engagement of the pressing screw hole 61 and the pressing screw 62 described above can also be provided on the replaceable blade holding plate side.

As shown in FIG. 5, a long concave groove 63 in the left-right direction is provided between the concave step surface 25 of the inclined blade attachment surface 24 and the mounting screw hole 27, and an eccentric shaft 65 with an eccentric ring 64 formed in this concave groove. It is also possible to loosen the mounting screw 41, turn the eccentric shaft 65 about a half turn, and project the eccentric ring from the mounting surface 24, thereby creating a gap s in the same manner as shown in FIG. Although this eccentric shaft is shown as being provided on the inclined blade mounting surface 24,
This is provided on the replacement blade holding plate 31, or on the mounting surface 2.
It is also possible to fit half of the circumference of the blade 4 into the replaceable blade holding plate 31.

As shown in FIGS. 6 and 7, the inclined blade mounting surface 24
A cam groove 66 is provided between the concave stepped surface 25 and the mounting screw hole 27, which is long in the left-right direction and inclined at right angles to the top and bottom. The connected wedge piece 69 is fitted into the cam groove 66 , the mounting screw 41 is loosened, and the screw shaft 68 is rotated within the screw hole 67 , thereby pushing the wedge piece 69 so that a portion of the wedge piece 69 is attached to the inclined blade mounting surface 24 .
It is also possible to provide an embodiment in which the blade protrudes from the blade and presses the replaceable blade holding plate 31 to create the gap s shown in FIG. The above-mentioned wedge piece can be fitted onto the replacement blade holding plate 31, or between the inclined blade mounting surface and the replacement blade holding plate 31.

When the gap s is formed, the replaceable blade holding plate 31
The adjustment screw 44 can be tilted without being interfered with by the eccentric collar 45.

(Operations and effects of the present invention) As clarified from the above explanation, the present invention provides an inclined blade mounting surface 24 formed to correspond to the blade opening.
, fit the replaceable blade a into the concave stepped surface 25 and press the replaceable blade holding plate 3.
1. The replaceable blade a must be replaced several to dozens of times a day to maintain its sharpness, but in that case, loosen the mounting screw 41 of the replaceable blade holding plate 31 and replace it with its own weight, or
The gap s shown in FIG. 8 is created by the elasticity of the pressing spring 47 shown in FIGS. The replaceable blade a sandwiched between the plates 31 can be freely removed and replaced.

The present invention has the above-mentioned structure and operation, and forms a gap a in a timely manner between the concave stepped surface 25 of the inclined blade mounting surface 24 and the mounting screw 41 for the inclined blade mounting surface of the replaceable blade holding plate 31. The blade can be replaced without removing the blade holding plate 31, and since there is no pin etc. to pass through the blade a, the blade a can be replaced.
By forming a gap s with a thickness of about

In addition, as per embodiment 2 of the claims for utility model registration, there is an embodiment characterized in that a force such as a pressure spring is provided between the inclined blade mounting surface and the replaceable blade holding plate. An embodiment characterized in that, as in Embodiment 3, a push screw is provided on the slanted blade mounting surface or the replacement blade holding plate to protrude and separate the blade holding plate from the slanted blade mounting surface when the screw is advanced, a utility model. According to Embodiment 4 of the registered claims, a wedge piece is provided on either the inclined blade mounting surface or the replacement blade holding plate to move in the left-right direction and press the replacement blade holding plate or the inclined blade mounting surface. According to embodiment 5 of the utility model registration claim, an embodiment characterized in that an eccentric shaft is provided between the inclined blade mounting surface and the replaceable blade holding plate to generate pressure by rotation, the mounting screw is 41, the blade holding plate 31 can be tilted without relying on its own weight to create the gap s.

[Brief explanation of the drawing]

1 to 3 of the accompanying drawings show an embodiment of the present invention, FIG. 1 is a partially cutaway back view of the blade support plate 22 seen from the arrow direction in FIG. 2, and FIG. 2 is a portion of the adjustment screw 44. 3 is a cut side view of the knife stock body 1 cut at the mounting screw 41, and FIGS. 4, 5, and 6 are cut side views showing other embodiments, respectively. , FIG. 7 is a sectional view taken along the line A--A in FIG. 6, and FIG. 8 is a sectional side view showing replacement of the replaceable blade a. DESCRIPTION OF SYMBOLS 1...Knife stock body, 22...Blade support plate, 24...Slanted knife mounting surface, 25...Concave stepped surface, 31...Replaceable blade holding plate, 41...Mounting screw, 4
7...Ammunition such as a pressure screw, 62...Press screw, 6
9... Wedge piece, 65... Eccentric shaft, 69... Wedge piece, a
...Replacement blade.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a replaceable blade type knife stock that can be freely inserted and removed from the cutting table of a super-finishing planer, a replaceable blade holding plate is attached to the inclined blade mounting surface formed to correspond to the blade opening with a mounting screw. Attachment: A concave stepped surface that approximately matches the thickness of the replaceable blade is provided on the upper edge of the inclined blade mounting surface facing the material feeding surface; In between, the mounting screw is loosened to create a gap for separating the replaceable blade holding plate from the blade mounting surface, and a disposable replaceable blade is inserted through the gap and placed on the concave stepped surface, A replaceable blade type knife stock for a super-finishing planer for woodworking, characterized in that the replaceable blade is clamped by the replaceable blade holding plate. 2. A replaceable blade type knife stock for a super-finishing planer for woodworking as set forth in claim 1 of the registered utility model claim, characterized in that a force such as a pressure spring is provided between the inclined blade mounting surface and the replaceable blade holding plate. . 3. Utility model registration claim 1, characterized in that the slanted blade mounting surface or the replaceable blade retaining plate is provided with a set screw that protrudes when the screw is advanced and separates the blade holder from the slanted blade mounting surface. Replaceable knife stock for super finishing planer for woodworking. 4. Scope of the Utility Model Registration Claim 1, characterized in that either the inclined blade mounting surface or the replaceable blade retaining plate is provided with a wedge piece that moves in the left-right direction and presses the replaceable blade retaining plate or the inclined blade mounting surface. Replaceable knife stock for the super-finishing planer for woodworking described above. 5. The replaceable blade type superfinishing planer for woodworking as set forth in claim 1 of the utility model registration claim, characterized in that an eccentric shaft is provided between the inclined blade mounting surface and the replaceable blade holding plate to generate pressure by rotation. knife stock.