JPH0911019A - Deburring jig - Google Patents

Abstract

PURPOSE: To provide a deburring jig which deburs cleanly even by a person who is not a skilled worker, can be operated easily, and does not require force in its operation. CONSTITUTION: An air motor 2 and a rotary blade 3 which is rotated by the drive of the air motor 2 are stored in a housing 4, and a circumference of the rotary blade 3 is a guide cylindrical section 4a having a small diameter. A guide groove 5 is provided in a part of the cover cylindrical section 4a, a part of the rotary blade 3 is exposed, and the guide groove 5 is pressed against an end face of workpiece and moved to remove burr generated on the end face of workpiece. Moreover, a position of the housing 4 may be deflected along the axial direction of the rotary blade 3, and a position of the rotary blade 3 which is exposed from the guide groove 5 may be changed to keep sharpness in cutting. A shield member which prevents scattering of chips may be provided around the guide groove 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handy jig for removing burrs formed on the end face of a resin molded product, for example.

[0002]

2. Description of the Related Art Conventionally, in resin molding, for example, FIG.
When removing the burr generated along the end surface t of the work W as shown in (C), the deburring work is performed manually using the knife 51 as shown in (A). Further, as a tool for chamfering the end face of a plastic pipe in a special mode, for example, a chamfering tool as shown in Japanese Patent Laid-Open No. 49-76193 is known. In this technique, a cutting blade of the tool is used as a pipe end. And the pipe and tool are relatively rotated about the axis by 360 degrees, so that the cutting edge chamfers the end of the pipe.

[0003]

However, the work of deburring with the knife 51 like the former is a skilled work,
In addition, there is a problem that attention and eyesight are required to use the knife 51, and the user is very tired. That is, FIG.
As shown in (B), when using the knife 51, it is necessary to accurately maintain the angle θ with respect to the shape surface at, for example, 30 to 45 degrees. There was a risk that the cut would become deeper. And in such a case, it was a defective product. Further, in the latter chamfering tool, there is a problem in that the pipe end and the cutting blade must be rotated 360 degrees relative to each other and directly cut by human power in a state where they are in close contact with each other, which requires force. Therefore, there has been a demand for a deburring jig that can be deburred neatly by an amateur, is easy to operate, and does not require power.

[0004]

In order to solve the above-mentioned problems, the present invention provides a cover cylinder that covers the periphery of a rotary blade that is rotated by a drive source, and a guide groove that exposes a part of the rotary blade in this cover cylinder. Was formed. In the second aspect, the guide groove has a shape that matches the shape of the work end surface of the deburring portion.

According to a third aspect of the present invention, the guide groove can be displaced in position along the axial direction of the rotary blade, and in the fourth aspect, the positional deviation of the guide groove can be caused by axially displacing the cover cylinder with respect to the rotary blade. It was carried out by moving relative to each other.

According to a fifth aspect of the present invention, in the vicinity of the guide groove,
A shielding member for shielding the scattering of chips is provided, and in Claim 6,
This shielding member was made transparent.

[0007]

[Function] The guide blade is applied to the end face of the work to rotate the rotary blade, and the rotary blade on the exposed portion cuts off the burr. Then, by moving the jig along the deburring portion while keeping the guide groove along the work end face, it is possible to remove the burr generated along the work end face. At this time, the cutting depth is constant due to the guide groove, and it can be neatly cut regardless of who works. In addition, the work is easy because it is scraped off with a rotary blade. At this time, by adjusting the shape of the guide groove to the shape of the end face of the work as in claim 2, the chamfering angle can be made more uniform, and the finish becomes more beautiful.

According to the third aspect of the present invention, the guide groove can be displaced along the axial direction of the rotary blade, and if the sharpness of the rotary blade is reduced, the position of the guide groove can be changed. The position of the exposed rotary blade changes and the sharpness of the rotary blade is maintained. The positional deviation of the guide groove can be easily performed by moving the cover tube relative to the rotary blade as in the fourth aspect.

Further, when the burrs are scraped off by the rotary blade, chips are scattered around. Therefore, a shielding member is provided in the vicinity of the guide groove to shield the scattered chips. Further, when the shield member is made of a transparent material as in claim 6, the guide groove and the like can be seen through the shield member, and the work of bringing the guide groove into contact with the end face of the work can be performed easily and surely.

[0010]

An embodiment of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a main part view relating to the basic configuration of a deburring jig of the present invention, (A) is a side view, (B) is a front view, and FIG. 2 shows a state in which a guide groove is pressed against the end face of a work. FIG. The deburring jig 1 of the present invention is configured as, for example, a handy jig for cutting burrs formed on an end surface of a resin molded product, and as shown in FIG. 1, an air motor 2 as a drive source and an output of the air motor 2. A rotary blade 3 attached to the shaft and a housing 4 accommodating the air motor 2 and the rotary blade 3 are provided, and a tip end portion of the housing 4 has a small diameter as a guide cylinder portion 4a surrounding the rotary blade 3. The tip portion has a cylindrical shape that opens to the outside. The rotary blade 3 is a 4-blade blade or a 6-blade blade (4 blades in the embodiment), and the cutting tool diameter is, for example, 3φ to 8φ.
I have to.

A guide groove 5 is formed in a part of the guide tube portion 4a so as to be cut into the inside of the tube, and a part of the rotary blade 3 is exposed. The notch angle α of the guide groove 5 is formed, for example, according to the angle of the work end surface of the deburring portion so that the guide groove 5 can be pressed closely against the work end surface.

In the deburring jig 1 thus configured, as shown in FIG. 2, the guide groove 5 is pressed against the work end surface t of the work W, and the air motor 2 is driven to drive the work end surface t.
If it is moved along, the burr generated on the work end face t is cut off by the rotary blade 3 and a predetermined chamfered shape can be obtained. At this time, since the depth of cut is constant by the guide groove 5, the finish is beautiful, and moreover, it does not require a considerable force to scrape off, which is easy.

By the way, in such a deburring jig 1, burrs and the like scraped off by the rotary blade 3 become cutting chips, and most of them are scattered outside the periphery of the guide groove 5, so that the worker is protected from the scattered chips. Is desirable. Therefore, FIG. 3 is another structural example diagram in which the transparent shielding member 6 is provided around the guide groove 5. That is, in this case, for example, an arcuate shield member 6 is provided on the outer peripheral portion of the housing 4.
Are fastened with screws 7, and this arrangement direction is a direction in which chips coming out of the guide groove 5 can be shielded. Further, since the shielding member 6 is a transparent body, for example, an operation of seeing through the shielding member 6 and applying the guide groove 5 to the work end face t can be performed without any trouble. By the way, most of the chips are hardly scattered outside and enter the inside of the guide tube portion 4a, but even if some chips enter, the tip side of the guide tube portion 4a is opened to the outside. As a result, chips do not collect in the cylinder.

Next, FIGS. 4A and 4B are views showing still another constitutional example for maintaining the sharpness of the rotary blade 3, where FIG. 4A is a side view and FIG. 4B is a sectional view showing the inside. In this configuration example, the housing 4 is axially displaceable with respect to the air motor 2 and the rotary blade 3, and for example, a plurality of fastening holes 8, ... Are provided at predetermined intervals along the axial direction of the housing 4. The fixing screw 9 is provided so that it can be fixed to the screw hole of the air motor 2.
When the sharpness of the rotary blade 3 deteriorates, the fastening holes 8, ...
By shifting the position of and stopping it, the position of the rotary blade 3 exposed from the guide groove 5 can be changed to maintain sharpness, and all blades can be used, which is economical.

As shown in FIG. 5, the fastening grooves 8, ... Of the housing 4 as described above are long grooves 10 which are long in the axial direction.
You may do it. Also in this case, when the sharpness is lowered, the position of the fastening screw 9 is displaced with respect to the longitudinal groove 10, and a new cutting edge is constantly exposed to the guide groove 5 to maintain the sharpness.

Next, FIG. 6 is a structural example diagram in which the housing 4 itself is fixed to the air motor 2 and the like, and the adapter cylinder 11 is fitted in the guide cylinder portion 4a so that the position can be displaced. In this configuration example, as shown in (A), a long first guide groove 12 is formed in the guide tube portion 4a, while a second guide groove 13 matching the work end face shape is formed in the adapter tube 11. After being formed, the adapter cylinder 11 is fitted into the guide cylinder portion 4a and then fixed by the fastening screw 14. Then, the adapter cylinder 11 is displaced in the axial direction and fixed, so that a new blade is always exposed and sharpness is maintained. In this configuration example, the configuration is simple because it is only necessary to move the adapter cylinder 11.

Further, in FIG. 7, a housing 4 for accommodating the air motor 2 and a guide cylinder 16 for covering the periphery of the rotary blade 3 are separately formed, and a guide groove 17 is provided in the guide cylinder 16 and a group of guide cylinders 16 is provided. This is a configuration example in which the threaded portion 16a at the end is screwed into the threaded portion 4b at the tip of the housing 4 so as to be attachable. In this case, the sharpness can be maintained by preparing several kinds of guide cylinders 16 having different positions of the guide grooves 17 and replacing them. In this embodiment, the guide tube is provided with one guide groove, but a plurality of guide grooves having different shapes may be provided.

[0018]

As described above, the deburring jig of the present invention is
Apply the guide groove to the end face of the work and rotate the rotary blade,
Since the burrs are cut off by the rotary blade exposed from the guide groove, anyone can perform deburring with a clean and uniform surface shape regardless of the skill level. Moreover, it does not require much power and is easy. In addition, the guide groove can be displaced along the axis of the rotary blade, and if the sharpness of the rotary blade deteriorates, the position of the guide groove can be changed so that a new blade is always used to sharpen the rotary blade. It is economical because it can be kept and the whole blade can be used. If a shielding member is provided in the vicinity of the guide groove to shield the scattered chips, the safety of the worker can be improved. And if this is made transparent, the work is easy and reliable.

[Brief description of the drawings]

1A and 1B are views showing a main part of a basic structure of a deburring jig of the present invention, in which FIG. 1A is a side view and FIG. 1B is a front view.

[Fig. 2] Action diagram of the state where the guide groove is applied to the end of the work.

3A and 3B show a configuration example in which a shielding member is provided, where FIG. 3A is a side view and FIG. 3B is a front view.

4A and 4B show configuration examples in which the position of the guide groove can be displaced, FIG. 4A is a side view, and FIG.

5A and 5B show another configuration example in which the position of the guide groove can be displaced, FIG. 5A is a side view, and FIG.

6A and 6B show another configuration in which the position of the guide groove can be displaced, in which FIG. 6A is a side view in a disassembled state, and FIG.

7A and 7B show a configuration example in which a guide cylinder is provided separately, FIG. 7A is a side view in an exploded state, and FIG. 7B is a vertical sectional view.

FIG. 8 shows a conventional example, (A) is a jig, (B) is an operation diagram, and (C) is a state diagram of a work end surface.

[Explanation of symbols]

1 ... Deburring jig, 2 ... Air motor, 3 ... Rotary blade, 4 ...
Housing, 4a ... Guide tube portion, 5 ... Guide groove, 6 ... Shielding member, t ... Work end portion.

Claims (6)

[Claims] 1. A rotary blade that is rotated by a drive source, and a cover cylinder that covers the periphery of the rotary blade. A guide groove that exposes a part of the rotary blade is formed in the cover cylinder. Deburring jig to be used. 2. The deburring jig according to claim 1,
A deburring jig characterized in that the guide groove has a shape that matches the shape of the work end surface of the deburring portion. 3. The deburring jig according to claim 1 or 2, wherein the guide groove is capable of being displaced in position along the axial direction of the rotary blade. 4. The deburring jig according to claim 3,
The deburring jig is characterized in that the positional deviation of the guide groove is performed by moving the cover cylinder relative to the rotary blade in the axial direction. 5. The deburring jig according to any one of claims 1 to 4, wherein a shielding member for shielding the scattering of chips is provided in the vicinity of the guide groove. Deburring jig to be used. 6. The deburring jig according to claim 5,
A deburring jig, wherein the shielding member is a transparent body.