JPH0647706A - Cutting device of super surfacer - Google Patents

Abstract

PURPOSE:To obtain the cutting device, the constitution of which is simple and which is excellent economically, of a super surfacer. CONSTITUTION:A cutting knife 4 is made by brazing a flake-like cutting tip 7 to a rigid plane iron 6. At the edge of the cutting tip 7, a cutting edge 8 having a ridge race (a) and a cutting face (b) and a rear cutting surface 9 adjacent to the cutting edge connecting with the face (b) are provided. By clamping with a fixing screw 5, the plane iron 6 is fixed to a mounting surface 3, resulting in installing the cutting knife 4 to a knife stock main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a super-finishing planing board which cuts the surface of wood smoothly.

[0002]

2. Description of the Related Art A super-finishing planer is a machine for applying a fixed cutting blade to a piece of wood to be transferred, and a cutting device shown in FIG. 4 is generally well known. In the figure, 20 is a mild steel surface blade base metal 21 is a surface blade metal brazed to one end of the surface blade metal base 22 is a sharp edge 23 formed at the tip of the surface blade metal base 21 is the above-mentioned table blade base metal base 20 The back blade base metal 24 made of mild steel that is attached to the
The back blade metal 25 provided at one end of is a back blade surface formed at the tip of the back blade metal 24.

The above-mentioned back edge surface 25 is 80 ° to 90 ° with respect to the joint surface.
It has a blade edge angle of ° and a surface width of 0.2 mm to 0.3 mm, and is set with the blade edge 22 retracted by 0.1 mm to 0.2 mm. 26 is a tightening screw for tightening and fixing the front base metal 20 and the back base metal 23.27 is a fixing screw 30 for fixing the front base metal 20 to the mounting surface 29 of the knife stock body 28.The fixing screw 30 is provided on the front side corresponding to the cutting edge 22. It is a blade tip.

[0004]

Needless to say, the sharpness of the cutting edge is of utmost importance for the smooth finish cutting of the wood surface, but the mounting position of the back cutting edge surface 25 with respect to the cutting edge 22 is properly set. It is also important to set. That is,
This back edge surface 25 is required to be accurately set in order to control the tip crack in the cutting process and to obtain a good cutting surface, but this requires a lot of experience and skill.

In order to eliminate the complexity of the above-mentioned cutting edge setting, however, a cutting device using a throw-away type cutting tool as shown in Japanese Utility Model Publication No. 59-5526 has been developed as an example. This apparatus uses a thin blade 31 as shown in FIG. 5, and a blade tip 22 and a back blade surface 25 are integrally formed at the tip thereof by grinder grinding. Therefore, it was epoch-making that a troublesome cutting edge set was unnecessary, but another problem is pointed out in this device.

That is, in order to hold the above-mentioned thin blade 31 in a highly rigid and accurate position, a knife holder 32, a blade pressing plate 33, a setting member 34, etc. having a high precision and a complicated structure are used. The cost of the equipment is high. Further, the flake-shaped blade 31 is mass-produced but still expensive, and the user's burden is heavy when it is thrown away.

The present invention has been made under such a background, and has a simple structure and is economically excellent in that the blade can be re-polished and used. Is to provide.

[0008]

In order to achieve the above object, the cutting device according to the present invention is configured as follows. That is, the gist is that the cutting blade is composed of a base metal having rigidity and a flaky blade fixed to the end of the base, and the edge of the blade has a ridge face and a rake face. There is provided a sharp cutting edge having an edge and a back cutting edge surface adjoining the cutting edge which is continuous with the rake surface, and further the cutting blade is fixedly provided by the base metal.

[0009]

[Function] Since the blade and the base metal are integrally configured,
The rigidity of the cutting edge can be sufficiently secured. Therefore, the cutting blade can be attached easily and accurately only by fixing the base metal. Further, it is possible to perform the polishing process with the base metal having high rigidity as a reference, and the blade edge can be re-polished.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting device for a superfinishing planer according to the present invention will be specifically described below. FIG. 1 is a vertical cross-sectional view of this device, 1 is a material feeding table of a super finishing planer, 2 is a knife stock main body provided on the material feeding table 1, and 3 is a slanted mounting provided inside the knife stock main body 2. The surface 4 is the entire cutting blade provided on the mounting surface 4 by the fixing screw 5.

The cutting blade 4 is composed of a base plate 6 of a mild steel plate having rigidity and a blade plate 7 brazed to one end of the base plate 6. The blade 7 is formed into a thin piece by using a tool material such as high speed steel. At the end of the blade 7, there is a sharp cutting edge 8 having a rake face a and a rake face b.
And the back edge surface 9 continuous with the rake surface b is formed at the bottom thereof. This back edge surface 9 is 0.1 mm from the edge 8
Provided at a position retracted by about 0.2 mm, 0.2 mm to 0.3 mm
Is formed in a rising edge shape. Reference numeral c is a relief surface that is continuous with the back blade surface 9, and is formed in a sloped shape so as not to interfere with the discharge of chips.

Reference numeral 11 denotes a blade mouthpiece 12 arranged on the front side corresponding to the cutting blade 4, and a reference surface formed on the upper surface of the blade mouthpiece 11 from which the blade tip 9 is protruded by a predetermined dimension in the height direction. Cutting of a processing material (not shown) is performed. Reference numeral 13 denotes a protrusion 14 provided on the lower portion of the mounting surface 3, and a push screw screwed into the protrusion 13 has its end abutted against the lower side of the base metal 6 and receives thrust during cutting. The push screw 14 can also adjust the amount of protrusion of the cutting edge 8.

In the above structure, the base metal 6 is joined to the mounting surface 3, and the base metal 6 is lightly tightened by the fixing screw 5, and the push screw 14 is actuated to extend the blade edge 8 in the protruding direction.
When the cutting edge 8 protrudes from the reference surface 12 by a predetermined amount, the operation of the push screw 14 is stopped and the fixing screw 14 is strongly tightened. By doing so, it is possible to easily prepare for the cutting of the processed material.

At the time of cutting, a downward pressing force is applied to the cutting edge 8. However, since the cutting edge is given rigidity by the base metal 6 and is fixed to the base metal 6 by brazing, accurate machining can be performed. The base metal 6 has a cross-sectional shape with a width of 50 mm and a thickness of about 10 mm, and is machined to provide accurate dimensional accuracy. The rigidity ensures the linear accuracy of the blade 7.

Then, setting on the tool grinder (knife grinder) is carried out with high accuracy on the basis of the base metal 6. In addition, in one embodiment, the relief surface c continuous to the back blade surface 9 is formed as shown in FIG. 2, but it may be formed in a shape in which it is deleted as shown in FIG. In this case, the amount of polishing at the time of grinding can be made as small as possible.

[0016]

As described above, the cutting device according to the present invention is
The blade metal is fixed to a base metal having high rigidity, and the blade tip and the back blade surface are formed together on this blade metal. Therefore, the cutting blade can be attached by the base metal, and the structure can be simplified. Further, it becomes possible to re-polish the cutting edge with a rigid base metal as a reference, and it is possible to obtain an effect that the Lang Kong cost for cutting can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a configuration of a cutting device according to the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a cutting blade.

FIG. 3 is an explanatory diagram showing the configuration of another example of the cutting blade.

FIG. 4 is an explanatory diagram showing a configuration of a conventional cutting device.

FIG. 5 is a similar explanatory view of the related art.

FIG. 6 is an explanatory diagram showing a configuration of a conventional cutting blade.

[Explanation of symbols]

 3 Mounting surface 4 Cutting blade 5 Fixing screw 6 Base metal 7 Blade metal 8 Cutting edge a Sinking surface b Rake surface 9 Back blade surface

Claims (1)

[Claims] In a super-finishing planer in which a fixed cutting blade is associated with the wood to be transported by the material feeding means, and the surface of the wood is cut by the cutting blade, the cutting blade includes a rigid base metal and an end of the base metal. It is composed of a thin blade blade fixed to the part, and the edge of the blade has a sharp blade edge having a rake face and a rake face, and a back blade face adjacent to the blade edge connected to the rake face is provided, Furthermore, a cutting device for a superfinishing planer, characterized in that a cutting blade is fixedly provided by the base metal.