JPH08108311A - Milling cutter with brush - Google Patents

Abstract

PURPOSE: To provide a milling cutter with a brush, which is capable of easily adjusting and properly maintaining the amount of projection of the brush. CONSTITUTION: A cutting edge 9 is provided on the outer peripheral part of the tip part of a cutter body 7, and a mounting shaft 11 for a brush is provided inside the path of rotation of the cutting edge. The brush 8 is fit on the mounting shaft 11 so that it can freely move in the axial direction of the cutter body 7, and a spring 12 for energizing the brush 8 outward intervenes between the brush 8 and the cutter body 7. A check plate 13 for preventing the brush 8 from slipping off is locked to the mounting shaft 11. Further, a brush projecting amount adjusting screw 13e having an axis parallel to the axis of the check plate is screwed into the check plate 13 so that the tip part 13g of the adjusting screw is allowed to abut on a supporting member 8a, and the tip part 13h of a pin 13f is engagingly locked and fixed to the supporting member 8a so that the supporting member 8a cannot rotationally turn with respect to the mounting shaft 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling machine with a brush for cutting a work with a blade and deburring a work surface with a brush by rotating a cutter body.

[0002]

2. Description of the Related Art A milling cutter is often used as one of tools for cutting metal materials. During machining using a milling cutter, a convex uncut portion called a burr is often generated on the work surface. As one of means for cutting the work while removing the burrs, a milling machine with a brush in which a brush is provided on the cutter body of the milling machine is used.

FIG. 4 shows an example of the milling machine with brush. In the figure, reference numeral 1 is a cutter body of the milling cutter, and 2 is a brush. A blade body 3 is provided on the outer peripheral portion of the tip end of the cutter body 1, and a recess 4 is formed inside the rotation locus of the blade body 3 and the brush 2 is supported in the recess 4. The brush 2 has a structure in which a plurality of linear bodies 2b are planted in an annular support member 2a, and the brush 2 is supported in the recess 4 by a bolt 6 via a spacer 5. Here, the tip portion 2c of the brush 2 is in a state of protruding L toward the outside of the cutter body 1 from the tip portion 3a of the blade body 3.

In the milling machine with a brush having the above structure, the cutter body 1 is rotated as the cutter body 1 is rotated.
The blade body 3 attached to cuts the work, and the tip portion 2c of the brush 2 protruding outward by L slides on the work surface to deburr the work surface. be able to.

In the above-mentioned brush-equipped milling machine, the tip 2c of the brush 2 wears with use, and the protrusion amount L decreases. If the protrusion amount L is small, the deburring effect is small. Therefore, it is necessary to adjust the protrusion amount L of the brush 2 every fixed use, and conventionally, the thickness of the spacer 5 is changed. The specific operation procedure is shown in FIG.
First, the brush 2 and the spacer 5 are removed by removing the bolt 6. Next, a spacer having an appropriate thickness is selected from among the spare spacers, and the brush 2 is fixed to the cutter body 1 with the bolt 6 via the new spacer to adjust the protrusion amount L of the brush 2. Was there.

[0006]

In the above-mentioned conventional milling machine with a brush, since the protrusion amount L of the brush 2 is adjusted by the above procedure, first, it is necessary to prepare a large number of spacers having different thicknesses as spare spacers. In addition to this, it is necessary to select a spacer having an appropriate thickness, and in addition to this, it is necessary to remove and install the brush 2 and the spacer 5, which is very troublesome and the work efficiency is high. There was a problem that was bad.

Further, in the adjusting method, the protrusion amount L
However, there is a problem in that it is difficult to maintain the protrusion amount L at an appropriate amount, and if the protrusion amount L is small, the friction between the tip 2c of the brush 2 and the work surface is caused. The force is small and the desired deburring effect cannot be obtained. On the contrary, when the protrusion amount L is large, the frictional force between the tip 2c of the brush 2 and the work surface is large, and the tip 2c of the brush 2 is excessively worn.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a milling machine with a brush that can easily adjust the protruding amount of the brush and can maintain the brush appropriately for a long period of time.

[0009]

In order to solve the above problems, the present invention employs the following configurations. That is, in the brush-equipped milling machine according to claim 1, a blade body is provided at an outer peripheral portion of the tip end portion of the cutter body
Further, a recess is formed inside the rotation trajectory of the blade and a brush is supported in the recess, and the cutter body rotates to cut the work, and the brush cuts the work on the work cut surface. In a deburring mill with a brush, the brush is supported so as to be movable in the axial direction of the cutter body and incapable of slipping out of the cutter body, and the brush is provided between the brush and the cutter body. In the recess, a biasing member that biases outward in the axial direction is interposed.

According to a second aspect of the present invention, there is provided a brush milling machine according to the first aspect, wherein the recess is provided with a mounting shaft having its axis aligned with the axis of the cutter body. The brush is configured by implanting a plurality of linear bodies on an annular support member, and the support member is fitted to the mounting shaft so as to be movable in the axial direction, and the brush comes out of the mounting shaft. It is characterized in that a pressing plate for preventing the is fixed.

According to a third aspect of the present invention, there is provided a brush milling machine according to the second aspect, wherein the pressing plate has an end portion abutting against the supporting member with an axis parallel to the axis. A protrusion amount adjusting screw is screwed on, and a tip end portion of which is fixed to the support member by a pin locked so as to prevent the support member from rotating with respect to the mounting shaft. .

[0012]

In the milling machine with a brush according to the present invention, since the brush is urged outward by the urging member, even if the protruding amount of the brush is larger than the proper amount, Depending on the magnitude of the frictional force with the work surface, the brush can be appropriately retracted toward the inside of the recess against the biasing force of the biasing member.

In the brush milling machine according to the third aspect of the present invention, since the tip of the brush protrusion adjusting screw is screwed to the support member of the brush from the outside, the brush protrusion adjusting screw is attached. By rotating the
The brush can be displaced axially. At this time, since the brush is urged outward by the urging member, the tip portion of the brush protrusion amount adjusting screw remains in contact with the support member of the brush from the outside even after the brush is displaced. There is. Therefore, the brush protrusion amount can be adjusted by the brush protrusion amount adjusting screw. Further, since the support member of the brush is non-rotatably locked to the mounting shaft by the tip portion of the pin, the brush rotates as the cutter body rotates.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a view showing an embodiment of a brush-equipped milling machine of the present invention. In the drawing, reference numeral 7 is a cutter body, and 8 is a brush. A so-called wire brush is used as the brush 8, but a plastic brush may be used. A blade body 9 is provided on the outer peripheral portion of the tip end of the cutter body 7, and a recess 10 is formed inside the rotation trajectory of the blade body 9. The cutter body 7 has a recess 10
The mounting shaft 11 is provided so that its axis is aligned with the axis of the cutter body 7. The brush 8 is shown in FIG.
As shown in the longitudinal sectional view of FIG. 1, a plurality of linear members 8b are planted in an annular support member 8a. As shown in FIG. 1, the support member 8a is moved on the mounting shaft 11 in the axial direction. It is attached by freely fitting. Brush 8
A spring 12 for urging the brush 8 outward in the axial direction in the recess 10 is interposed between the cutter body 7 and the cutter body 7. Here, the tip portion 8c of the brush 8 is in a state of protruding by L from the tip portion 9a of the blade body 9 toward the outside of the cutter body 7. Also, the support member 8a
A hole 8d is formed in the.

A pressing plate 13 for preventing the brush 8 from coming out is fixed to the mounting shaft 11. As shown in the longitudinal sectional view of FIG. 3, the pressing plate 13 has an annular pressing plate body 13a and a female screw hole 1 formed therein.
3d and a bolt insertion hole 13d in which a step portion 13c is formed
And a brush protrusion adjusting screw 13e.
And is provided by being screwed into the female screw hole 13b.
f is fixed. In FIG. 1, the tip portion 13g of the brush protrusion adjusting screw 13e of the pressing plate 13 is in contact with the support member 8a with an axis parallel to the axis. Further, the pin 13f has a tip portion 13h.
Is fitted in a hole 8d formed in the support member 8a. In the pressing plate 13, the bolt 14 has its head 14
The bolt insertion hole 13d with a being locked to the stepped portion 13c
Is fixed by being inserted into the female screw hole 7a of the cutter body 7. Based on this configuration, the support member 8a is non-rotatably locked to the mounting shaft 11.

In the milling machine with the brush having the above structure, the cutter body 7 is rotated as the cutter body 7 rotates.
Since the blade body 9 attached to cuts the work, and the brush 8 projects the tip portion 8c thereof toward the outside of the cutter body 7 from the tip portion 9a of the blade body 9 by L,
The tip 8c of the brush 8 slides on the work surface of the work, and deburring on the work surface of the work can be performed.

If the protrusion amount L is large, the frictional force between the tip portion 8c of the brush 8 and the work surface is increased, and the tip portion 8c of the brush 8 is excessively worn.
In the brushed milling machine shown in FIG. 1, since the brush 8 is biased outward by the spring 12, when the protrusion amount L is large, the frictional force between the tip portion 8c of the brush 8 and the work surface is large. Depending on the magnitude of this frictional force, the brush 8 can be appropriately retracted toward the inside of the recess 10 against the biasing force of the spring 12. Therefore, the tip 8c of the brush 8 is not excessively worn, and the brush 8 can be effectively used for a long period of time. Further, by utilizing the characteristic that the brush 8 can be appropriately retracted into the recess 10, the protrusion amount L is set to be slightly larger than the proper amount at the time of the adjustment. Then, even when the initial protrusion amount L is large, excessive wear does not occur, and the amount approaches an appropriate amount with use. In this way, since the protrusion amount L can be used in an appropriate amount for a long period of time, the adjustment frequency can be reduced, work efficiency is improved, and it is practically convenient.

Further, in FIG. 1, since the tip portion 13g of the brush protrusion amount adjusting screw 13e is screwed to the supporting member 8a of the brush 8 while being in contact with the support member 8a from the outside, the brush protrusion amount adjusting screw 13e. By rotating the
The support member 8a of the brush 8 can be displaced in the axial direction. At this time, since the brush 8 is urged outward by the spring 12, the tip portion 13g of the brush protrusion amount adjusting screw 13e remains after the displacement of the brush 8.
The support member 8a of the brush 8 remains in contact with the support member 8a from the outside. Therefore, the protrusion amount L of the brush 8 can be adjusted by the brush protrusion amount adjusting screw 13e. Since this adjusting method can be achieved without the need for spare parts and without disassembling operation, the protrusion amount L of the brush 8 can be easily adjusted. Further, the support member 8a of the brush 8 is non-rotatably locked to the mounting shaft 11 by the tip portion 13h of the pin 13f. for that reason,
The brush 8 rotates with the rotation of the cutter body 7 and can perform deburring.

[0019]

According to the milling machine with a brush of the first or second aspect, since the brush is biased outward by the biasing member, the magnitude of the frictional force between the tip of the brush and the work surface to be machined. Accordingly, the brush can be appropriately retracted toward the inside of the recess against the biasing force of the biasing member. Therefore, the tip of the brush is not worn excessively and can be effectively used for a long period of time. Further, by setting the protrusion amount of the brush to be slightly larger than the proper amount at the time of the adjustment, the protrusion amount can be maintained at the proper amount for a long period of time.

According to the third aspect of the milling machine with a brush, the protrusion amount of the brush can be adjusted very easily by rotating the brush protrusion adjusting screw. Further, since the support member of the brush is non-rotatably locked with respect to the mounting shaft by the tip of the pin, the brush can be rotated with the rotation of the cutter body to perform deburring. it can.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a brush milling machine according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a brush of the milling cutter with brush shown in FIG.

FIG. 3 is a vertical cross-sectional view showing a pressing plate of the brush milling machine shown in FIG.

FIG. 4 is a vertical sectional view showing a conventional example of a milling machine with a brush.

[Explanation of symbols]

 7 Cutter main body 8 Brush 8a Support member 8b Linear body 9 Blade body 10 Recess 11 Mounting shaft 12 Spring 13 Holding plate 13e Brush protrusion amount adjusting screw 13f Pin 13g Brush protrusion adjusting screw tip 13h Pin tip L protrusion amount

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazutaka Taguchi, Kazutaka Taguchi, 1528 Nakashinta, Yokoi, Kobe, Anpachi-gun, Gifu Prefecture Mitsubishi Materials Corp. Gifu Works (72) Inventor Takehisa Takahashi 5-33 Shiba, Minato-ku, Tokyo No. 8 Mitsubishi Motors Corporation

Claims (3)

[Claims] 1. A cutter body is provided with a blade body on an outer peripheral portion thereof at a tip end portion thereof, and a recess is formed inside a rotation locus of the blade body, and a brush is supported in the recessed portion. In a milling machine with a brush that rotates a main body to cut a work with the blade and deburrs a work surface with the brush, the brush is movable in an axial direction of the cutter main body and slips out of the cutter main body. A brush characterized by being imperviously supported, and an urging member for urging the brush outward in the axial direction in the recess is interposed between the brush and the cutter body. Milling cutter. 2. The milling machine with a brush according to claim 1, wherein the recess has a mounting shaft with its axis aligned with the axis of the cutter body, and the brush has a plurality of lines on an annular support member. The support member is fitted to the mounting shaft so as to be movable in the axial direction, and a pressing plate for preventing the brush from coming out is fixed to the mounting shaft. A milling machine with a brush characterized by having. 3. The brush milling machine according to claim 2, wherein a brush protrusion adjusting screw whose tip portion abuts on the supporting member with an axis parallel to the axis is screwed to the pressing plate, and A milling machine with a brush, the tip of which is fixed to the support member with a pin that is locked so that the support member cannot rotate with respect to the mounting shaft.