JPH0794087B2 - Deburring method and device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring method and apparatus therefor, and more particularly, to a cylindrical body such as a valve body used in a valve portion of power steering. And has a stepped shape in the inner diameter and has a cutout groove from the end face to the stepped portion, and when forming the cutout groove, a burr generated in the vicinity of the cutout groove The present invention relates to a method and an apparatus for removing burrs. That is, assuming that the valve body is the work 1, as shown in FIGS. 6 to 10, the work 1 is
It is a small part that is cylindrical and has a stepped portion in the inner diameter and has a notch groove 2 from the end face to the stepped portion. The grooving is usually performed by milling, but as shown in FIG. 9, when forming the cutout groove 2, burrs 3, 4 and an inner circumference are formed on the outer peripheral surface near the cutout groove 2. Since burrs 5 and 6 occur on the surface, these burrs 3 and
It is necessary to remove 4,5,6. The present invention relates to a method and an apparatus for removing such burrs 3, 4, 5 and 6.

(Prior Art) Conventionally, the above deburring is pressed against the center line 14 from the end face of the work 1 by using the collet cutter 7 shown in FIG. 11, and the burrs 3 and 4 seen in FIG. , 5,6 had been removed.

(Problems to be Solved by the Invention) As described above, the conventional deburring method of this type is a method of pressing the collet cutter 7 against the work 1.
As shown in FIG. 11, the shape of the collet cutter 7 is
Chamfered outer guides 8 and inner guides 9 are provided so that they can enter the work 1 well, and the cutters that actually remove burrs are the outer cutters 10 and the inner cutters 11, and the comparison is made in the direction of the center line 14. It is very short. Therefore, when the collet cutter 7 is deeply stroked in order to completely remove the burr, as shown in FIG.
Since the straight portion 13 other than the above has a maximum of 1.65 mm (β-α), there was a problem that the skirt inner diameter portion 12 of the work 1 shown in FIG. 11 was scratched.

The present invention is intended to solve such a problem. That is, the present invention relates to the inner diameter portion of the skirt of the work 1.
It is an object of the present invention to provide a method and an apparatus capable of removing burrs 3, 4, 5 and 6 without damaging 12.

(Means for Solving Problems) In the deburring method of the present invention, the first step and the second step are performed separately, that is, in the first step, the collet cutter is moved from the end face of the work in the direction of the center line. Insert and remove the burr on the outer peripheral surface of the work and part of the vertical burr on the inner peripheral surface,
In the second step, a burr removal blade is brought into contact with the inner peripheral surface of the workpiece and rotated to remove the burr on the inner peripheral surface. Further, the deburring device of the present invention,
A jig table with a set jig for setting the work and a clamp jig for clamping, and a collet cutter that can be inserted from the end surface of the work in the direction of the center line,
The deburring blades provided in parallel with the collet cutter and abutting on the inner peripheral surface of the workpiece so as to be rotatable, and the positions where the collet cutter and the deburring blade are respectively attached are made to correspond to each other. And a shuttle device for selectively moving the jig table.

(Operation) In the first step of the deburring method of the present invention, the collet cutter is inserted from the end face of the work toward the center to remove the burr on the outer peripheral surface of the work and a part of the vertical burr on the inner peripheral surface, After that, the collet cutter is pulled out from the work. Subsequently, in the second step, a rotatable deburring blade tool is brought into contact with the inner peripheral surface of the work to remove the burr on the inner peripheral surface of the work.
The deburring blade is pulled out from the work. Further, in the deburring apparatus of the present invention, the work is set by the set jig attached to the jig table, and then clamped by the clamp jig. Next, the collet cutter is inserted from the end face of the work in the direction of the center line and the above-mentioned first step is performed. After that, the jig table is shuttled to a position corresponding to the deburring blade, and the deburring blade is attached to the workpiece. The second step described above is performed by bringing the inner peripheral surface into contact with and rotating the same.

(Embodiment) FIG. 1 shows an embodiment of the deburring apparatus of the present invention. In FIG. 1, 24 is a set jig for setting the work 1, 22 is also a set bevel, 23 is a jig fastening bevel for clamping the work 1, 24 is a jig fastening cylinder for sliding the bevel 23, 25 Is set 21 and both bevels
A jig table on which 22, 23 and a jig tightening cylinder 24 are placed, 26 is a shuttle cylinder for shutting the table 25, 27 is a collet cutter, 28 is a cylinder for raising and lowering the cutter 27, and 29 is deburring. A deburring holder having a cutting tool, 30 is a cylinder for moving the holder 29 up and down, and 31 is a motor for rotating the holder 29. Also, FIG. 2 shows the first
FIG. 7 is an enlarged plan view showing a state in which the work 1 is temporarily positioned and set in the apparatus shown in the figure. In the deburring apparatus configured as shown in FIG. 1, first, as shown in FIG. 2, the work 1 is placed on the temporary positioning pin 35 and the set bevel.
Set to 22. When the operator hits a start lever (not shown), the jig tightening cylinder 24 slides and the work 1 is clamped by the jig tightening bevel 23. At this time, the temporary positioning pin 35 escapes from the work 1. Next, the collet cutter 27 shown in FIG. 1 descends by the operation of the cylinder 28 and enters from the end surface of the work 1 in the direction of the center line, and removes the burrs 3 and 4 and part of the burr 6 shown in FIG. Remove. This state is shown in FIG. 3, but as shown in FIG. 3, the collet cutter 27 is stopped at a certain position so as not to damage the inner diameter portion 12 of the skirt of the work 1. Therefore, the skirt inner diameter portion 12 is not scratched, but the burr 5 and a part of the burr 6 on the inner peripheral surface shown in FIG. 9 remain. After that, the collet cutter 27 is raised by the reverse operation of the cylinder 28, and the collet cutter 27 is pulled out from the work 1. This completes the first step of the method of the invention.

Next, the shuttle cylinder 26 is operated to move the jig table 25 to the right so that the work 1 is positioned directly below the deburring holder 29. Then, the cylinder 30 is operated to lower the deburring holder 29, and as shown in FIGS. 4 and 5, the deburring holder 29 is put into the work 1 and the motor 31 moves the deburring holder 29 into a central angle. At 270
Rotate by °. As a result, the burrs 5 and 6 shown in FIG. 9 can be completely removed. That is, as shown in FIG. 4 and FIG. 5, the deburring holder 29 is provided with a deburring blade 32, and the portion of the blade 32 that abuts the cutting blade is the blade 33. Since the spring 34 can absorb the variation in the inner diameter of the work 1, the burrs 5 and 6 can be completely removed. After that, the cylinder 30 is operated in reverse to raise the deburring holder 29 and pull it out from the work 1, thereby completing the second step of the method of the present invention.

In this way, all of the burrs 3 and 4 and part or most of the burr 6 shown in FIG. 9 are removed in the first step by the collet cutter 27, and the remaining part of the burr 6 and all of the burr 5 are removed. Removed in the second step by rotation of the deburring blade 32, and
The inner diameter portion 12 of the skirt of the work 1 is not damaged.

(Effects of the Invention) Among the burrs generated in the vicinity of the notch groove of the work, the deburring method of the present invention uses the collet cutter in the first step to remove all of the burrs on the outer circumference of the work and the longitudinal length of the inner circumference. This is a method of removing a part of the burrs in the direction and removing all of the burrs on the inner peripheral surface by rotating the deburring blade in the second step. Corresponding to the finishing step, it is not necessary to forcibly make the collet cutter deeply stroke the inner peripheral surface of the work in the first step, so that the inner diameter of the skirt of the work is not damaged and the work is a small part. However, the burr can be surely removed.

Further, the deburring device of the present invention comprises a jig table on which a setting jig for setting a work in which burrs are generated in the vicinity of the notch groove and a clamp jig for clamping, and a center line direction from the end surface of the work. Since the collet cutter is provided so that it can be inserted into the work piece and the deburring blade tool that is rotatably provided in contact with the inner peripheral surface of the work piece, the work piece is set and clamped securely, and then the collet The cutter can perform the first step of the method of the present invention, and the deburring blade can perform the second step of the method of the present invention.

Moreover, the collet cutter and the deburring blade are provided in parallel with each other, and the jig table is selectively moved in correspondence with the positions where the collet cutter and the deburring blade are attached, respectively. Since the shuttle device is provided, it is possible to shuttle the jig table in a short time by the shuttle device from the end of the first step by the collet cutter to the start of the second step by the deburring blade tool, and during that time. There is almost no lost time, and therefore the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention, and FIG.
1 is an enlarged plan view showing a state where a work is set by the apparatus shown in FIG. 1, and FIG. 3 is a partially sectional front view showing a state where the first step of the present invention is carried out by the apparatus shown in FIG. , FIG. 4 is a plan view showing a state in which the second step is being carried out, and FIG.
The drawing is a partial sectional front view of FIG. 4, FIG. 6 is a side view of the work, and FIG. 7 is a sectional front view taken along the section line AA of FIG.
FIG. 8 is a plan view of FIG. 6, FIG. 9 is a partially cutaway sectional front view showing a state in which burrs are generated on the work, and FIG. 10 is an enlarged view of part B of FIG. The figure is a partially sectional front view showing an example of a conventional technique. 1-workpiece, 2-notch groove, 3,4,5,6-burrs, 12-workpiece inner diameter part, 13-workpiece straight part, 14
~ Work center line, 21 ~ Set jig, 22 ~ Set bevel, 23 ~ Jig tightening bevel, 25 ~ Jig table, 26 ~ Shuttle cylinder, 27 ~ Collet cutter, 28 ~ Cylinder,
29 ~ Deburring holder, 30 ~ Cylinder, 32 ~ Deburring blade.

Claims (2)

[Claims] 1. A relatively small work having a cylindrical shape and having a stepped portion in the inner diameter and having a burr generated in the vicinity of the cutout groove when the cutout groove is formed from the end face to the stepped portion. In the method for removing the burr,
A first part for inserting the collet cutter from the end face of the work in the direction of the center line to remove the burr on the outer peripheral surface of the work and a part of the vertical burr on the inner peripheral surface of the work to extract the collet cutter from the work. And a step of bringing a rotatable deburring blade tool into contact with the inner peripheral surface of the workpiece to rotate the deburring blade tool to remove burrs on the inner peripheral surface of the workpiece and pull the deburring blade tool from the workpiece. A deburring method comprising a second step of removing. 2. A cylindrical shape having a step shape in the inner diameter and a cutout groove extending from the end face to the stepped portion, which is formed in the vicinity of the cutout groove when the cutout groove is formed. In a device for removing the burr of a relatively small work having burrs, a jig table to which a setting jig for setting the work and a clamp jig for clamping is attached, and the work table can be inserted in the center line direction from the end surface of the work. A collet cutter provided, a deburring blade tool provided in parallel with the collet cutter and rotatably provided in contact with the inner circumference of the work, and each of the collet cutter and the deburring blade tool. A deburring device comprising a shuttle device for selectively moving the jig table in correspondence with the installed position. Place