JPS597551A - Removing device of burr - Google Patents

Abstract

PURPOSE:To remove burrs effectively, by a method wherein elastic abrasive is provided on a circumference of a rotor which is applied for removal of burrs generated inside a work and having a turning diameter corresponding to the inside diameter of the work. CONSTITUTION:Elastic abrasive 8 is installed on the tip part of a stationary spring 2 provided on a rotary holder 1. When burrs are removed, a removing device is set within an internal space of a work 9 and a positioning shaft 4 is slided downward. In this instance, a tapered part A of the stationary spring 2 is pressed by the tip part of the shaft 4 and the abrasive 8 is pressed against an internal circumferential surface of the internal space. When the holder 1 is turned under this state, the internal circumferential surface of the work is ground by the abrasive 8 and the burrs are removed thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a removing device that effectively removes pars generated inside a workpiece through machining such as trilink or milling, or press working.

Conventionally, in order to remove the burr caused by machining and press working on the bottom and side walls of the inner diameter of the cylinder of the workpiece, polishing equipment such as barrel polishers and sandblasting machines was used to polish them, and rotating abrasive materials were used using jigs and tools. The worker applied the abrasive to the workpiece and moved the workpiece and abrasive material appropriately to remove debris without the operator's intuition. However, in the former case, although it is effective in removing the particles, secondary work is required such as abrasive material clogging in small holes etc., which must be removed, and in the latter case, removing the particles is difficult. If there were some areas that could not be polished or if the abrasive material was applied too strongly, blurring may occur.

In order to eliminate the above-mentioned conventional drawbacks, the present invention has been made by rotating the elastic abrasive material in both directions, with the elastic abrasive material in close contact with the surface where pars occurs on the workpiece, to maintain stable contact pressure at all times. It is an object of the present invention to provide a parr removal apparatus which can uniformly remove parr by removing parr and can continuously remove parr from a large number of workpieces.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pari removal apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an external perspective view of a parr removal device according to the present invention, and FIG.
b) shows a side sectional view with the positioning shaft (described later) lowered. 1 is an abrasive fixing spring holder, and the abrasive fixing spring 2 is fixed by screwing the abrasive fixing spring holder Ij. 3 is its fixing screw. A positioning shaft 4 is inserted into the abrasive material fixing spring holder I. The positioning shaft 4 has vertical grooves formed at six locations, and the abrasive fixing spring 2 engages with the vertical grooves.

The positioning shaft 4 is rotationally driven by a rotation mechanism (not shown), and this rotation is transmitted to the abrasive fixing spring 2. A portion A of the abrasive fixing spring 2 that contacts the tip of the positioning shaft 4 has a tapered shape, and is configured such that the tip of the abrasive fixing spring 2 opens when the positioning shaft 4 descends. Ru. The state at the time of opening is shown in Figure 2 (
b). A slide bearing 5 for assisting the vertical sliding of the positioning shaft 4 is installed inside the abrasive fixing spring holder l.

6 is a stopper when the positioning shaft 4 is pulled upward, and a spring 7 is interposed between the stopper 6 and the positioning shaft 4. 8 is the abrasive material fixing spring 2
This is an abrasive material that is attached to the tip of the blade, and the material is aluminum oxide (Scotch Glide, manufactured by 3M), etc., which has some elasticity. Next, the above Q,
The operating mechanism of the IJ removal device will be explained. Figure 2 (
As shown in a), set the removing device in the cylindrical inner space of the workpiece 9. Next, slide the positioning shaft 4 downward. A vertical groove is formed on the positioning shaft 4, and the vertical groove forms a 0.2 to 0.3 inch fit with the abrasive material fixing spring 2. Therefore, the positioning shaft 4 slides relative to the abrasive fixing spring 2. At this time, the tip of the positioning shaft 4 (which is rounded) presses the tapered part A of the abrasive fixing spring 2, and spreads the abrasive fixing spring 2 into the state shown in FIG. 2(b). . In this state, the positioning shaft 4 rotates. The abrasive fixing spring 2 rotates in synchronization with this rotation, and the abrasive 8 polishes the inner surface of the workpiece. At this time, the tip of the positioning shaft 4 always serves to uniformly press the abrasive fixing spring 2 against the inner wall surface of the workpiece. After the deburr is removed, the positioning shaft 4 is pulled out from the workpiece (at this time, the positioning shaft 4 falls upward against the abrasive fixing spring 2) and returns to the original φ device.

When this slide l' is used, a high spring 7 and a stopper 6 are arranged to prevent the positioning shaft 4 and the abrasive material fixing spring 2 from rising together beyond a predetermined position, and the abrasive material fixing spring 2 maintains its original position and closes when the positioning shaft 4 moves upward.

In the above embodiments, the number of vertical grooves on the positioning shaft 4 varies from 2 to 2 depending on the material of the workpiece, the occurrence of paris, and the type of abrasive.
Select arbitrarily from among the eight. Of course, the number of vertical grooves and the number of abrasive fixing springs 2 are the same.

According to the present invention, which has been explained in detail above, it is possible to effectively and effectively remove debris generated on the bottom surface or internal side wall surface of a workpiece, and it is also possible to continuously treat a large amount of debris from a workpiece. It has the excellent advantage of being able to In addition, since the abrasive material rotates in close contact with the internal side wall surface, even a polygonal hole can be uniformly contacted, and an optimal deburring effect can be expected.

[Brief explanation of the drawing]

FIG. 1C'--One embodiment of the pari removal apparatus according to the invention is shown. In the figure, 1: abrasive material fixing spring holder, 2: abrasive material fixing spring, 3: fixing screw, 4: positioning shaft, 5 Ni slide bearing, 6: stopper, 7: Suij ring, 8: abrasive material, 9: workpiece. Agent Patent attorney Aihiko Fukushi (and 2 others) Procedural amendment 1. Indication of the case Patent application No. 57-112662 2. Name of the invention: Paris removal device 3. Person making the amendment. Relationship with the case. Patent applicant 4. Agent address: 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka-shi, 8545. 7. Contents of the amendment (1) “Aluminum oxide” on page 3, line 19 of the specification is amended to “nonwoven fabric (abrasive grain A403) J. (2) “Aluminum oxide” on page 3, line 20 of the specification Correct "glide" to "bright". that's all

Claims (1)

[Claims] 1. A rotary body having a rotation diameter corresponding to the inner diameter of the workpiece and a mechanism for reversing the direction of rotation, and an elastic abrasive material disposed around the circumference of the rotary body. Features Paris removal equipment.