JPH0243682Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention is for use in woodworking, which is provided with a flat cutting cutter that rotates in contact with the workpiece being fed by a material feeding table or a material feeding belt on the table. The present invention relates to a surface cutting machine, and has a field of use in which a surface cutting cutter can be easily attached to and replaced with a cutter rotation axis arranged substantially perpendicular to the table.

(Prior art) As shown in FIG. 7, the workpiece is fed by a feed table a or a feed belt running over the table a, and a rotating cutter shaft c is disposed approximately perpendicular to the table a. A woodworking plane cutting machine to which a plane turning cutter f having a blade for cutting a workpiece on the mounting end face and peripheral part thereof is mounted is known from Japanese Utility Model Publication No. 58-23606 and the like.

However, the rotating cutter axis c of the plane rotating cutter f
For installation, a positioning protrusion d is provided on the mounting surface of the cutter shaft c, and a plurality of pins e are attached around the protrusion d.
Attach the upward protruding plane g to the rotating cutter f.
A positioning hole h that fits into the positioning protrusion d is provided at the center of the positioning hole h, a pin hole i that fits the above-mentioned pin e is formed around the positioning hole h, and the positioning hole h is fitted into the positioning protrusion d, Furthermore, fit the pin hole i into the pin e and attach the rotating cutter f to the cutter shaft c.
The cutter shaft c is attached by applying a pad j to the periphery of the positioning hole h, and screwing a fixing screw k passed through the pad j from the central end face of the cutter shaft c. However, even a standard rotating cutter with a diameter of about 180 mm weighs 2.5 to 3.0 kg, and since the blade is provided on the periphery, it is necessary to carry the rotating cutter to the underside of the shaft c and grope around to set the positioning hole h. It is hard work to fit the fixing screw k fitted into the part b, fit the pin hole i into the pin e, support it with one hand, and screw it into the rotating cutter shaft c while supporting this with one hand and it is very dangerous.

For this reason, as shown in FIG.
The cylinder m on which the material is to be placed is placed on the material feeding table a, and one hand is inserted through the window hole n provided in the cylinder m to perform the above-mentioned mounting operation, but in reality, the operation is to raise the material feeding table a. The cylinder m is hardly used because it has to be carried out.

(Problems to be Solved by the Invention) A plane turning cutter is replaced several times during a day's work, and the replacement is extremely important when using a woodworking plane cutting machine. The present invention aims to improve the structure of the planar rotating cutter itself so as to reduce the burden on the operator when it comes to frequent installation and replacement.

(Configuration for solving the problem) The purpose of the present invention is to solve the problem mentioned in the previous section. In a woodworking plane cutting machine in which a plane turning cutter that rotates at a distance is replaceably attached to a cutter turning shaft arranged almost perpendicularly to the table, a cutter is attached to the end face of the cutter turning shaft corresponding to the material feeding table, and a tip is attached to the cutter turning shaft. A plurality of anti-rotation rods each having a flange are provided in a protruding manner. This relates to a surface cutting machine for woodworking, characterized in that a small-diameter insertion hole is communicated with the insertion hole and allows only the rotation stopper to pass therethrough, and a two-stage housing groove is provided at the bottom of the small-diameter insertion hole into which only the collar enters. It is.

A preferred embodiment of the invention will be described in the following section.

(Example) Fig. 1 shows an outline of a woodworking plane cutting machine, in which a material feeding table 3 is provided in a box-shaped cutting frame 1 and can be freely adjusted up and down with a handle 2. A cutter pivot shaft 5 whose rotation is controlled by a motor or the like is passed through the center of a bracket 4 which is fixed to the frame 1 in a hanging manner.
1 mounting surface 6.

The material feeding table 3 is configured to feed the processed material 31, and a material feeding belt (not shown) is placed on the table.
In some cases, a belt is provided as before, and the workpiece 31 is sent by the belt.

The mounting surface 6 of the cutter pivot shaft 5 is slightly enlarged in diameter as before, and a positioning protrusion 7 is provided at the center, and a plurality of rotation stopper rods 8 having a collar 9 at the protruding end are arranged around the outer periphery of the protrusion. A screw hole 10 is formed in the center of the positioning protrusion 7 from the end surface. In addition, a guide tube 11 is embedded and installed between adjacent rotation stopper rods 8, and a slider 12 whose upper end is pushed by a bullet 15 is fitted inside the guide tube 11, and the slider 12 has a mounting surface. A pin 13 protruding from the slider 6 is provided, and a stopper 14 is provided on the guide tube 11 in correspondence with the lower shoulder of the slider.

The planar rotating cutter 21 is formed with a mounting plate 22 projecting in the direction of the mounting surface 6, and a plurality of cutting blades 23 are provided on the lower circumference. This planar rotating cutter 21 has a transparent positioning hole 24 in the center of the mounting plate 22 described above, which fits almost tightly into the positioning protrusion 7, and a collar 9 around the positioning hole 24.
An insertion hole 25 that fits into the rotation stopper rod 8 including a small diameter insertion hole 26 that communicates with the front side of the insertion hole 25 in the rotation direction and allows only the rotation stopper rod 8 to pass through, and a flange on the bottom wall of the small diameter insertion hole 26. A housing groove 27 of only 9 is provided in two stages. In addition, the slider 1 is mounted on the top surface of the mounting plate 22.
A concave engagement hole 28 such as a concave spherical surface into which the pin 13 of No. 2 is fitted.
form.

The collar 9 of the rotation stopper rod 8 may be provided with a guide slope 9a that slides on the bottom surface of the small-diameter insertion hole 26 and moves into the accommodation groove 27, as shown in FIG.

The plane turning cutter 21 of this embodiment has a cutting blade 23
Hold the bottom surface of the mounting plate 22 with your palm to avoid injury caused by the cutter, align the positioning hole 24 with the positioning protrusion 7 protruding from the mounting surface 6 of the cutter rotation shaft 5, and then insert the rotation stopper into the insertion hole 25 while rotating. 8
and the flange 9, then rotate the cutter 21 slightly in the opposite direction to the turning direction, insert the rotation stopper 8 into the small diameter insertion hole 26, and pass the flange 9 through the accommodation groove 27, then release your hand. Even in this case, the planar rotating cutter 21 does not fall. Therefore, a pad 2 is placed around the positioning hole 24.
9, and screw the fixing screw 30 into the screw hole 10 to install it.

In this case, even if the rotation stopper rod 8 is inserted into the small diameter insertion hole 26 with a little margin in the insertion direction, when the cutter rotation shaft 5 is rotated, the rotation stop rod 8 that rotates together with the rotation shaft 5 will be inserted into the small diameter insertion hole 26. It enters the hole 26 and at the same time, the collar 9 is completely accommodated in the accommodation groove 27. The other pin 13 enters the concave engagement hole 28 and engages the bullet 15.
Since the flat rotating cutter 21 is pushed by the elasticity of the flat rotating cutter 21, the flat rotating cutter 21 in contact with the workpiece 31 does not vibrate due to cutting resistance.

(Function of the invention) The present invention includes a case where the ammunition 15 described in the embodiment is not used, but other aspects are as explained in the embodiment.

When the slider 12 on which the bullet 15 acts is provided on the mounting surface 6 of the cutter pivot shaft 5, and the concave engagement hole 28 is provided on the mounting surface 22 of the planar rotating cutter 21, the pin 13 is recessed. Until the engagement hole 28 is located and fitted, the rotation stopper 8 and the collar 9 will not touch the mounting surface 6 of the cutter rotation shaft 5 even if the flat rotation cutter 21 is slightly rotated in the rotation direction after the insertion hole 25 is inserted. The mounting plate 22 of the rotating cutter 21 may be slightly separated from the mounting plate 22 as shown in FIG. 5, and the collar 9 may not be able to enter the accommodation groove 27. In this case, the guide slope 9 is attached to the guard 9.
a, when the rotation stopper 8 enters the small-diameter insertion hole 26 by relative movement, the guide slope 9a of the collar 9 will move against the shoulder 27a of the bottom surface of the small-diameter insertion hole 26 in the accommodation groove 27.
After that, the bullet 15 is retracted and the tsuba 9 becomes the 6th
As shown in the figure, the ammunition enters the storage groove 27, and at the same time the ammunition 15
extends to fit the pin 13 into the recessed engagement hole 28.

Even if the bullet 15 or slider 12 is not provided, the weight of the planar rotating cutter 21 may prevent the collar 9 away from the mounting surface 6 from smoothly fitting into the housing groove 27 until the fixing screw 30 is tightened. Therefore, even in this case, the guide slope 9a of the collar 9 acts effectively as shown in FIG.

(Effects of the invention) As clarified above, the present invention provides several anti-rotation rods 8 having flanges 9 at their tip portions on the mounting surface 6 of the cutter rotation shaft 5 to which the flat rotation cutter 21 is attached. Rotating cutter 21 and rotation stopper 8
an insertion hole 25 into which the collar 9 fits, and a small-diameter insertion hole 2 through which only the rotation stopper rod 8 passes when the plane turning cutter 21 turns a little in the opposite direction to the original turning direction.
6 and a housing groove 27 provided on the bottom of the hole 26 to accommodate only the collar 9 are formed in two stages and communicated with the insertion hole 25, thereby fixing the planar rotating cutter 21 to the cutter rotating shaft 5. The plane turning cutter 2 can be temporarily fixed with the screw 30 to prevent it from separating before tightening, and then finally tightened with the fixing screw 30, which requires frequent tightening.
The disadvantage of requiring a worker to spend much effort in replacing and installing parts 1 can be easily eliminated.

In addition, a guide slope 9a is formed on the collar 9 of the rotation stopper rod 8, and the collar 9 is inserted into the housing groove 27 at the bottom of the small diameter insertion hole 26.
This has the effect that it can be easily inserted into the body and fixed with the fixing screw 30.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, and FIG. 1 is a front view showing an overview of a woodworking plane cutting machine, FIG. 2 is a partially cutaway plan view of a plane rotating cutter 21, and FIG. 3 is a cutter rotation axis. Fig. 4 is a longitudinal sectional front view showing the attachment of the plane turning cutter to the rotation stopper 8.
A front view showing the feeding of the tsuba 9 at the time of installation shown in FIG. 3 from a different angle from that shown in FIG. 3, and FIGS. The figure shows the engagement between the inclined surface 9a and the shoulder 28a of the receiving groove 28, and FIG. 6 shows the state in which the inclined surface 9a is completely fitted into the receiving groove 28. FIG. 7 is a longitudinal sectional front view showing the attachment of the conventional rotating cutter shaft c and the flat rotating cutter f, and FIG. 8 is a longitudinal sectional front view showing the attachment performed using the same cylinder m. 5...Cutter rotation axis, 6...Mounting surface, 8...
Rotation stopper rod, 9... Tsuba, 9a... Guide slope, 21
...Plane turning cutter, 22...Mounting plate, 25...
...Insertion hole, 26...Small diameter insertion hole, 27...Accommodating groove, 28...Concave engagement hole, 29...Batch, 30
... Fixing screw, 31 ... Processed material.

Claims (1)

[Claims for Utility Model Registration] 1. A planar rotating cutter that rotates in contact with the workpiece being sent by a material feeding table or a material feeding belt on the table, with a cutter rotating shaft arranged approximately perpendicular to the table. In a woodworking plane cutting machine that is attached interchangeably, a plurality of anti-rotation rods with flanges at the tips are protruded from the end face of the cutter rotation axis corresponding to the material feeding table, and the plane rotation cutter has A surface corresponding to the mounting surface of the cutter pivot shaft includes an insertion hole through which a rotation stopper including a collar is inserted, a small diameter insertion hole that communicates with the insertion hole in the rotation direction and allows only the rotation stopper to pass through, and the small diameter insertion hole. A plane cutting machine for woodworking, characterized in that a housing groove is provided in two stages at the bottom of the machine, into which only the collar enters. 2. The plane cutting machine for woodworking according to claim 1, characterized in that the collar of the rotation stopper rod is provided with a guide slope that cuts into the bottom of the small-diameter insertion hole and moves to the accommodation groove.