JP2000176904A - Woodworking super planer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woodworking super planer, the structure of which can be remarkably simplified and with which a vary favorable cutting work can be executed. SOLUTION: The inclination angle S of plane blades 71 and 72 to the transferring direction of a work W are set to be 90 deg. or near 90 deg.. At the edges a and b of the plane blades 71 and 72, included angles, which are one between their flank and face, are set to be 28 deg. or less. As the transferring means of the work W, pressure rollers 25a and 25b are provided so as to arrange these pressure rollers in correspondence with just before the cutting work positions of the plane blades 71 and 72.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woodworking super-finished planing machine for smoothly cutting the surface of a workpiece using a planer blade composed of a fixed blade.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a conventional superfinishing planner for woodwork. In the conventional one, the material feeding table 10
A turntable 102 is provided rotatably at the center of
Knife stocks 104, 104 are detachably attached to the concave portions 103 of the turntable 102. This knife stock 104 has a planer blade 1
05a and 105b are fixedly provided, with one having the blade edge a facing forward (to the right in FIG. 1) and the other having the blade edge b facing rearward.

On the other hand, the planer blade 105
A transporting means 200 including an endless belt 201 and a group of pressing rollers 202 is disposed above the material feeding table 101 including a and 105b to form a material feeding path H with the material feeding table 101. Endless belt 2 above
The reference numeral 01 is driven to be switched by a forward / reverse drive motor 203 so as to travel and transfer the workpiece W in the front-rear direction. When the workpiece W is transported backward, the one planer blade 105a
And when it is transferred forward, it is cut by the other planer blade 105b.

The above-mentioned planer blade 105a (planer blade 105)
The details of FIG. 8 are also shown in FIG. 8. The planer blade 105a is composed of a front blade 205 and a back blade 206 bolted to the front blade 205. It is fixed to 106. As is well known, the blade edge a of the planer blade is formed at the intersection of the flank on the front side of the blade and the rake surface on the back side of the blade. I have.

In order to use the super-finished planing board for woodworking having the above-described configuration, the turntable 102 is rotated and adjusted, and as shown in FIG. Angle of inclination of planer blades 105a and 105b)
Is set appropriately. For example, for cedars and cypresses, the skew angle is 55
The degree is about 35 degrees for keyaki and the like. In this embodiment, the angle of the two cutting edges a and b can be simultaneously adjusted by the turntable 102.

Next, the height of the material feeding means 200 is adjusted according to the thickness dimension of the work material W, and the interval between the material feeding paths H is appropriately set. If it does in this way, the endless belt 201 of the material feeding means 200 will be run backward, and the workpiece W will be thrown in front of the material feeding table 101. As a result, the workpiece W is transported backward, and
The lower surface is cut by a.

When the cutting to the end (right end) of the workpiece W is completed, the endless belt 201 is automatically driven in the reverse direction, and the workpiece W is returned to the front. As a result, the lower surface of the workpiece W is cut by the planer blade 105b facing backward. In this manner, the work material W is obtained by performing the cutting process twice on the same lower surface, and is finished smoothly.

[0008]

As described above, when the skew angle S is given to the plane blades 105a and 105b, FIG.
, The apparent edge angle Pa becomes smaller than the actual edge angle P (generally around 32 degrees), the sharpness of the edge increases, the cutting resistance is reduced, the edge durability is improved, and a high finishing effect is achieved. be able to. This is described, for example, in the specification of JP-A-58-171904, and is well known in general.

However, the advantage of being able to freely adjust the skew angle is that the turntable 102 is required on the other hand, and there is a problem that the structure is complicated. In addition, the skewed blade causes a reduction in the effective cutting width with respect to the length of the blade, and furthermore, since the blade edge region extends in the front-rear direction, the endless belt 201 is lengthened, and the overall configuration is significantly enlarged. There is a problem.

In cutting with a fixed blade, it is best to avoid the downward pressing force on the cutting edge as much as possible and to press the workpiece at a position immediately before the cutting edge does not involve the cutting edge. However, in the case of a blade having a skew angle, it is structurally impossible. In practice, this is ignored, and all parts are uniformly pressed by a large number of pressing rollers 202. For this reason, adverse effects such as sinking of the cutting edges a and b occur, and furthermore, a problem occurs such that excessive pressing force generates frictional heat at the time of feeding the material and causes the cutting edges to bend.

The present invention has been made in consideration of the conventional cutting technology which has been generalized in this way and has become a common sense, finds a problem existing therein, and solves it. That is, an object of the present invention is to provide an ultra-finished planer for woodworking, which has a very simple structure and can perform cutting work extremely well.

[0012]

Means for Solving the Problems To achieve the above object, a super finishing planer for woodwork according to the present invention is constructed as follows.

That is, the invention described in claim 1 is a super-finished planer which cuts a surface of a workpiece which is traveled and transported by a transport means by applying a planer blade made of a fixed blade to the workpiece. The gist is that the skew angle of the planer blade with respect to the direction is set at or near 90 degrees, and the cutting edge angle between the flank and the rake face of the planer blade is set at 28 degrees or less.

According to the super finishing planer for woodworking constructed as described above, the skew angle of the planer blade is fixed, and the construction can be simplified as compared with the conventional one. Further, the longest effective cutting width can be obtained with respect to the length of the blade. Further, since the cutting angle of the cutting edge is set to 28 degrees or less, it is possible to perform the same excellent cutting work as before even if the skew angle is 90 degrees.

The invention described in claim 2 is the first invention.
The gist of the present invention is that a pressing roller for pressing a work material is provided as a transfer means in a super finishing planner for woodworking, and the work material is pressed by the pressing roller immediately before a portion to be cut by a planer blade.

According to this configuration, since the downward pressing force does not act directly on the planer blade, it is possible to prevent the blade edge from sinking. Also, always press the work material at the appropriate position,
Since the transfer force can be exerted, the cutting can be satisfactorily performed without any adverse effect due to unnecessary power.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a super finishing planner for woodworking according to the present invention will be described below. 1 is a side view, FIG. 2 is a cross-sectional plan view, and 1 is a frame of a machine.
Is a table provided on the top of the frame 1 is a table 2
The horizontal table surface 4 provided on the upper surface of the table 2 has rectangular recesses 51 and 52 provided so as to cross the table 2 and two knife stocks which are detachably disposed in the recess 4.

The knife stocks 51 and 52 are symmetrical in the front-rear direction. The knife stock 6 is provided on one side of the upper surface. 71 and 72 are provided. One of the cutting edges a is directed forward, and the other cutting edge b is mounted rearward. The planer blades 71 and 72 are both front blades 8 as shown in FIG.
The back blade 9 and the back blade 9 are fixed by a tightening screw, and the planer blades 71 and 72 are attached to the inclined mounting surface 11 formed inside the knife stocks 51 and 52 by a fixing screw 12.

The cutting edges a and b of the planer blades 71 and 72 are formed at the intersection of the flank e on the front side of the blade and the rake face f on the back side of the blade as shown in FIG. 4, and the cutting edge angle A is 28 degrees. is there. On the other hand, the inclination angle R of the mounting surface 11 is formed at 25 degrees. The blade edges a and b protrude from the upper surface of the blade die 6 by about 0.03 to 0.05 mm, and the blade edges a and b intersect with the front-rear direction at an angle of 90 degrees (a skew angle 90).
Degrees).

Reference numeral 20 denotes a material feeding frame 21 and 22 disposed so as to be able to move up and down above the table surface 3, and a pair of rotating rollers 23 disposed at the front and rear portions of the material feeding frame 20. , 22 are endless belts. The feed surface 24 of the endless belt 23 faces the table surface 3 in parallel, and forms a material feed path H for the work material W.

The transfer direction of the workpiece W by the feed surface 24 is as follows.
The direction is orthogonal to the cutting edge line of the planer blades 71 and 72, and is the front-back direction of the table 2. 25a and 25b are pressing rollers disposed on the back side of the feed surface 24. The pressing rollers 25a and 25b are located immediately before the cutting edges a and b of the planer blades 71 and 72 and substantially correspond to the upper portions of the blade bases 6 and 6. Arrange. The press rollers 25a and 25b are straight idle rollers.

Reference numeral 30 denotes a forward / reverse drive motor linked to one of the rotary rollers 22 via a speed reducer 31. The drive motor 30 is a detection switch (not shown) for detecting the passage of the end of the workpiece W or a manual switch. Operation switch (not shown)
The endless belt 23
4 is switched and driven in the front-rear direction.

When the feed surface 24 travels rearward, the workpiece W is transported in the same direction and cut by one planer blade 71. When the feed surface 24 travels forward,
The workpiece W is cut by the other planer blade 72. When the drive motor 30 is appropriately inverted by the detection switch and the workpiece W reciprocates on the table surface 3, one planer blade 71 is used for roughing and the other planer blade 72 is used for finishing. .

The superfinishing planner for woodworking according to one embodiment is constructed as described above. Is set. Accordingly, the knife stocks 51 and 52 holding the knife stocks 51 and 52 are recessed portions 4 of the table 2.
The configuration can be simplified as compared with the conventional one using a turntable. In addition, since the cutting edge angle is set as small as 28 degrees,
It is not necessary to reduce the apparent edge angle by giving a skew angle, and it is possible to smoothly perform a cutting process comparable to the related art.

In this super-finished planing machine, since the cutting edge line is orthogonal to the transfer direction of the workpiece W, the cutting edges a and b are ideally formed by the simple pressing rollers 25a and 25b.
The workpiece W can be pressed at the position immediately before. For this reason, cutting can be performed favorably. Also, there is no adverse effect due to unnecessary pressing force.

In the above-described embodiment, the two planer blades 71 and 72 held by the knife stocks 51 and 52 are arranged outward, but they may be arranged inward as shown in FIG. good. This can be achieved by exchanging the knife stocks 51, 52 in front and rear positions.

In one embodiment, for example, when cutting is performed by one planer blade 71, the other planer blade 72 is rubbed by the workpiece W from the back side. Since the cutting is performed within the elastic range of the cutting edges a and b, there is no practical problem. However, in order to completely protect the cutting edge, the planer blade on the side not subjected to the cutting process can be positively immersed in the table surface and retracted.

In one embodiment, the edge angle A of the planer blades 71 and 72 is set to 28 degrees. However, considering the edge strength, durability, and the ability of a grinding machine to grind the edge, etc. It can be set in a range up to 20 degrees. The skew angle R is set to 90 degrees,
Considering an appropriate pressing range by the pressing rollers 25a and 25b, a slight range (practically, a range up to 85 degrees)
Changes in are acceptable.

In one embodiment, two planer blades 71 and 72 are mounted on the table 2.
Even if more than one planer blade is attached, it can be carried out without any problem.
Also at this time, similarly to the above, it is possible to arbitrarily select and adopt setting the front and rear directions of the planer blade arbitrarily, retreating and retracting the blade edge from the table surface, and changing the skew angle within a small range. Matters.

In one embodiment, the endless belt 23
, And the pressing rollers 25a and 25b act on the workpiece W through the endless belt 23. However, the pressing roller constitutes a material feeding means, and the pressing roller acts directly on the workpiece W. It may be changed to do so.

[0031]

As described above, according to the super-finished planing board for woodworking according to the present invention, the structure of the machine can be simplified, whereby the production cost can be greatly reduced. It has an excellent effect. In addition, there is an effect that the cutting can be performed extremely well without applying an excessive pressing force to the planer blade.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a super finishing planer for woodworking according to the present invention.

FIG. 2 is also a cross-sectional plan view.

FIG. 3 is a cross-sectional view showing a structure of a main part.

FIG. 4 is an explanatory diagram showing details of a blade edge portion.

FIG. 5 is a sectional view of a main part showing another embodiment.

FIG. 6 is a side view showing the structure of a conventional super-finishing planner for woodwork.

FIG. 7 is also a cross-sectional plan view.

FIG. 8 is an explanatory view showing a configuration of a cutting part.

FIG. 9 is an explanatory diagram showing a difference between a true cutting angle and an apparent cutting angle.

[Explanation of symbols]

 3 Table surface 4 Recessed part 51 Knife stock 52 Knife stock a Blade edge b Blade edge 71 Plane blade 72 Plane blade 8 Front blade 9 Back blade e Escape surface f Rake surface A Blade angle S Slant angle 23 Endless belt 24 Feed surface H Feeding material Road 25a Holding roller 25b Holding roller

Claims (2)

[Claims] 1. A super-finished planing machine which applies a planer blade made of a fixed blade to a work material traveled and transferred by a transfer means and cuts the surface thereof, wherein the oblique angle of the planer blade with respect to the transfer direction of the work material is determined. A super finish planner for woodwork, wherein the angle is set to 90 degrees or near and the angle of the cutting edge between the flank and the rake face of the planer is set to 28 degrees or less. 2. A method according to claim 1, wherein a pressing roller for pressing the workpiece is provided as the transfer means, and the pressing roller presses the workpiece immediately before a portion to be cut by the planer blade. Super finishing planer for woodworking.