JPH045219Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a burr removal device that removes burrs generated on a workpiece by cutting or the like.

(Prior art) Conventionally, as described in, for example, Japanese Utility Model Application Publication No. 60-109719, a cutting tool is advanced into a workpiece surface where a burr is formed using one driving force, and then the moving direction of the cutting tool is changed. A burr removal device that cuts burrs using the cutting tool is known.

In other words, the burr removing device is provided with a tool holder having a cutter that contacts the work surface at one end and a roller at the other end. A spring device is swingably mounted on a first unit stand that is moved forward and backward in the cutting direction, and further provided between the tool holder and the first unit stand is a spring device that biases the cutting tool against the workpiece surface. In addition, a second unit stand is provided which is moved forward and backward in the same direction as the first unit stand by a second grooved cam, and by contacting the roller on the second unit stand, it is possible to suppress the urging by the spring device. A wedge-shaped protrusion member is provided to provide a.

In the above device, by moving the second unit base in the opposite direction to the workpiece using the second grooved cam, the wedge-shaped protrusion member is separated from the roller and the suppression of the bias by the spring device is released. The cutting tool is introduced into the workpiece surface.
Thereafter, by moving the first unit base in the burr cutting direction using the first grooved cam, the cutting tool is operated to cut the burr.

However, in this device, the cutting tool is allowed to enter the workpiece surface by separating the roller and the wedge-shaped protrusion member using the second grooved cam and releasing the suppression of the bias by the spring device. The problem is that the structure becomes complicated because of the

(Purpose of the invention) The present invention has a simple structure, and uses a single driving force to move the cutting tool into the workpiece surface, in other words, into the burr cutting surface of the workpiece, and then changes the moving direction of the cutting tool and uses the cutting tool to burr. The purpose of the present invention is to provide a burr removal device for cutting.

(Structure of the invention) The invention includes a first slide that slides forward and backward in a direction perpendicular to the burr extension direction of the workpiece, and a second slide that is provided on the first slide and is equipped with a cutting tool and that slides forward and backward in the burr cutting direction. and a first cam and a second cam for sliding the first and second slides forward and backward, respectively, at one end of the swinging lever, and by swinging the swinging lever, the cutter is free from burrs. The burr is cut by entering the burr into the work surface, and then changing the direction of movement of the cutter and moving it in the burr width direction.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIGS. 1 and 2 show an embodiment of the burr removal device of the present invention. 1 and 2, the workpiece mounting table 1 includes the above-mentioned workpiece positioning protrusion 2 and a base member positioning shaft portion 3 on top of the protrusion 2.
A workpiece 4, such as a reverse clutch drum of an automobile transmission, is rotatably placed on the workpiece mounting table 1 with its center of rotation positioned on the workpiece positioning protrusion 2. be done.

A base member 6 is disposed on the workpiece mounting table 1, and the base member 6 contacts the workpiece 4 with its upper contact surface 5.
is placed. The base member 6 is penetrated by the base member positioning shaft 3 at its center, and is placed on the workpiece mounting table 1, in other words, on the workpiece 4, with the rotation center positioned at the base member positioning shaft 3. is rotatably supported.

The base member 6 has a long axis that slides forward and backward in the directions of arrows A and B in FIG. 1, that is, in a direction perpendicular to the extending direction of the burr 25 in FIG. A first slide 8 through which the base member positioning shaft portion 3 is passed through the oval hole 7
is provided. A bolt 10 passing through a mounting piece 9 provided on the rear side of the base member 6 is screwed onto one end of the first slide 8, and a double nut 11 is screwed onto the left end of the bolt 10. Ru. A coil spring 12 is compressed between the mounting piece 9 and the double nut 11, and the coil spring 12 urges the first slide 8 in the direction of arrow B.

In addition, a burr 25 is attached to the other end of the first slide 8 in the directions of arrows C and D in FIG.
A second slide 13 that slides forward and backward in the width direction is provided. A bolt 15 that passes through a mounting piece 14 provided at the upper end of the first slide 8 is screwed onto the upper end of the second slide 13, and a double nut 16 is screwed onto the upper end of the bolt 15. be done.
A coil spring 17 is compressed between the attachment piece 14 and the second slide 13, and the coil spring 17 urges the second slide 13 in the direction of arrow D.

A tip (cutting tool) holder 18 is provided on the second slide 13, and a tip 19 is fitted into the tip holder 18.
Attach the clamp set 20 to the tip holder 18 above.
It is designed to be fixed in place. Further, a guide 21 is attached to the second slide 13, and a slot 22 is formed between the guide 21 and the side surface of the second slide 13 on the side opposite to the tip, and the width of the slot 22 is adjusted. The resulting bolt 23 is screwed onto the guide 21. The vicinity of the tip 19 including the guide 21 is used as a blade portion 24, and by adjusting the amount of protrusion of the tip of the bolt 23, the width of the blade portion 24 becomes slightly larger than the width of the workpiece groove portion 26 where the burr 25 is to be cut. Set it as follows.

Further, a swing lever 28 is provided on the base member 6 so as to be swingable about a shaft 27 as a fulcrum.
One end of the swing lever 28 is brought into contact with the first cam contact surface 29 of the second slide 13, and by pressing the second slide 8 in the direction of arrow A, the first slide 8 is moved in the direction of arrow A. A first cam 30 that slides forward in the A direction is provided, and contacts the second cam contact surface 31 of the second slide 13,
A second cam 32 is provided in a protruding manner at the center of the first cam 30 to slide the second slide 13 forward in the direction of arrow C by pressing the second slide 13 in the direction of arrow C. Further, reference numeral 33 in the figure is an auxiliary cam for reliably sliding the first slide 8 forward and backward.

Next, the operation will be explained.

First, with the base member 6 removed from the workpiece mounting table 1, the workpiece 4 is set on the workpiece mounting table 1 so as to fit into the workpiece positioning protrusion 2, and then the contact surface of the upper surface of the workpiece 4 is set. The base member 6 is placed on the workpiece mounting table 1 in order to press and fix the base member 5.
Set it so that it fits onto the base member positioning shaft part 3 at the top. With the above settings set,
The workpiece 4 and the base member 6 are rotatable relative to the workpiece positioning protrusion 2 and the base member positioning shaft part 3, respectively, and the workpiece groove 26 has a burr 25 that is generated after cutting the snap spring insertion groove. At least one of the blades is rotated to a position where the blade portion 24 can enter.

FIG. 3 shows the main parts of this embodiment in a state where the workpiece 4 is set as described above, and is a diagram showing the operation in order. The positions a, b, c, d, and e of the swing lever 28 in FIG. 1 when the swing lever 28 is swung in the direction of arrow E in FIG.
They correspond to their respective positions.

FIG. 4 is an enlarged view of the workpiece groove 26 in which the burr 25 of the workpiece 4 is located, and shows the movement of the chip 19 with respect to the burr 25.
The a', c', and e' positions are a,
c and e, respectively.

FIG. 3a shows the initial state. Above swing lever 2
8 from position a in the direction of arrow E in FIG.
By pressing the second slide 13 in the direction of arrow A, the first slide 8 is slid forward in the direction of arrow A, and the blade part 24 moves into the workpiece groove part 26.
b, which is just before entering.

Next, when the blade part 24 enters the workpiece groove part 26, the guide 21 is adjusted in advance with the bolt 23, and the blade part 2
4 is made slightly larger than the width of the workpiece groove 26, the guide 21 is displaced inward by both side surfaces of the workpiece groove 26, and the reaction force of the guide 21 causes the chip located on the opposite side of the guide 21 to 1
9 is pressed against the work surface 35 where the burr 25 is always formed.

When the swinging lever 28 is further swung to the c position, the blade portion 24 has almost finished entering the workpiece groove 26, and the tip 19 is at the c' position in FIG. 4 near the bottom of the burr 25 on the workpiece surface 35. move forward.

When the swing lever 28 is further swung in the direction of arrow E from position c, the second cam 32 comes into contact with the second cam contact surface 31, presses the second slide 13 in the direction of arrow C, and the second slide 13 forward in the direction of arrow C d. That is, the chip 19 at position c' in FIG. 4 moves forward in the direction of arrow C along the work surface 35 and cuts the burr 25.

When the swinging lever 28 is swung to the e position, the swiveling lever 28 comes into contact with the swing lever stopper 36 and stops swinging, and the tip 19 moves forward to the e' position in FIG. 4 and starts cutting. Complete.

After that, move the swing lever 28 from position e to arrow F.
When the swing lever 28 returns to position c, the auxiliary cam 33 is about to come into contact with the first slide 8.

Furthermore, when the swing lever 28 is swung in the direction of arrow F from position c, the auxiliary cam 33 presses the first slide 8 in the direction of arrow B, and the first slide 8 is moved in the direction of arrow B.
The blade portion 24 is moved backward in the direction of arrow B along with the backward slide. When the blade portion 24 is removed from the workpiece groove portion 26 due to the backward movement, the coil spring 17 pushes the second slide 13 down in the direction of arrow D. (However, since FIG. 3 sequentially shows the states when the blade portion 24 only moves forward, the second slide 13 has already completed its retreat at c.) When it is swung in the direction and returned to position a, it returns to the initial state a.

Thereafter, at least one of the workpiece 4 and the base member 6 is rotated, and the blade part 24 is aligned with the workpiece groove part 26 where the burr 25 is present to be cut next, and the above cutting is repeated.

In addition, in the above embodiment, the swing lever 28 is structured to be manually swung;
For example, the driving force of a motor, cylinder, etc. may be used.

Further, in the above embodiment, the first cam 30 contacts the second slide 13, but a structure may be adopted in which the first cam 30 directly contacts the first slide 8.

Furthermore, depending on the design, it is also possible to remove burrs that appear on the end face or outer diameter side of the workpiece.

(Effects of the invention) As described above, the burr removal device according to the invention has a simple structure with two slides and two cams that slide the slides, and a single driving force moves the cutting tool to the work surface. This has the advantage of allowing the cutting tool to enter the burr cutting surface of the workpiece, then changing the moving direction of the cutting tool and cutting the burr with the cutting tool.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of a burr removal device that is an embodiment of the present invention, Fig. 2 is a plan view of the device when the swing lever is in the vertical position, and Fig. 3 is the operation of the main parts of the device. The explanatory diagram, FIG. 4, is an enlarged view of the workpiece groove portion of the workpiece. 1... Workpiece mounting table, 4... Workpiece, 6... Base member, 8... First slide, 13... Second slide, 19... Chip (cutting tool), 25... Burr,
26... Work groove, 28... Swing lever, 30
...First cam, 32...Second cam, 35...Work surface.

Claims (1)

[Scope of utility model registration request] A workpiece mounting table on which a workpiece is placed; a base member placed on the workpiece placing table; and a base member placed on the base member and guided to be slidable forward and backward in a direction perpendicular to the burr extension direction of the workpiece. a second slide that is supported by the first slide and includes a cutting tool for cutting the burr, and that slides forward and backward in the burr width direction along the work surface where the burr has formed with respect to the first slide; and the base. a swinging lever that is swingably provided on the member; and a swinging lever that is provided at one end of the swinging lever and comes into contact with the first slide or the second slide, and slides the first slide forward and backward to move the cutting tool to the workpiece surface. a first cam that moves forward and backward in the burr width direction; and a first cam that is provided at one end of the swinging lever and abuts the second slide, and slides the second slide back and forth to move the cutting tool forward and backward in the burr width direction; A burr removing device comprising: a second cam that causes the cutter to cut off burrs by at least one of the following motions.