CN214110043U - Polishing tool for hole surface - Google Patents

Abstract

The utility model relates to a burnishing tool for hole surface. Mainly solves the problems of large labor intensity and low efficiency caused by manual sand paper polishing in the later stage of the existing hole surface processing. The method is characterized in that: the square cutter is characterized in that sliding blocks (2) are arranged in grooves at two ends of the square cutter body (1), a spring (4) is arranged between the inner side of each sliding block (2) and the square cutter body (1), a sliding groove (8) is formed in the bottom surface of each sliding block (2), and a sliding block locking screw (7) connected with the square cutter body (1) is arranged in each sliding groove (8); the outer side of the sliding block (2) is connected with a grinding head seat (3) through a locking screw (5), and the outer surface of the grinding head seat (3) is wrapped with a polishing medium (9). The polishing tool is convenient to operate, high in polishing precision and high in working efficiency.

Description

Polishing tool for hole surface

Technical Field

The utility model relates to the field of machinary, a burnishing tool for hole surface specifically says so.

Background

When processing large-scale box class part, especially key part, the surface roughness of hole often requires highly, and the surface roughness of some holes exceeds Ra0.8 mu m, for example: the milling and boring series of square ram bearing holes require Ra0.4 mu m, and typical methods for improving the surface roughness of the holes comprise millienergy, an electric spindle grinding head, a sand belt grinding, manual polishing and the like when processing conditions such as grinding, honing and the like are not available, but the cost for purchasing the millienergy or the electric spindle grinding head is very high, the production and manufacturing cost is greatly increased, and the realization is difficult; the abrasive belt grinding needs to rotate a workpiece for processing, most parts do not have rotating conditions, and the method is not easy to realize; the manual polishing has the disadvantages of uneven surface knurl, large manual workload and the like. Therefore, the boring process is only adopted for finishing, the boring process theoretically can only reach Ra0.8 mu m, the subsequent polishing treatment is carried out by manual sand paper to reduce the roughness of the surface of the hole, but the effect is not ideal, the size of the surface of the hole is not uniform, the sense of the cutter mark is poor, the labor intensity is high, the efficiency is low, time and labor are wasted, and the manual polishing mode cannot meet the requirement of modern production and influences the development of enterprises.

Disclosure of Invention

Adopt manual polishing with abrasive paper in order to overcome current hole class surface machining later stage and make intensity of labour big, the inefficiency not enough, the utility model provides a burnishing tool for hole surface, this burnishing tool convenient operation, polishing precision is high, and work efficiency is high.

The technical scheme of the utility model is that: a polishing tool for the surface of a hole comprises a square cutter body, wherein sliding blocks are arranged in grooves at two ends of the square cutter body, a spring is arranged between the inner side of each sliding block and the square cutter body, a sliding groove is formed in the bottom surface of each sliding block, and a sliding block locking screw connected with the square cutter body is arranged in each sliding groove; the outer side of the sliding block is connected with a grinding head seat through a locking screw, and the outer surface of the grinding head seat is wrapped with polishing media.

The outer side of the grinding head seat is arc-shaped.

An adjusting pad is arranged on the inner side of the groove of the square cutter body, and a spring is arranged between the adjusting pad and the sliding block.

The utility model discloses following beneficial effect has: due to the adoption of the scheme, the polishing tool is connected to the boring rod, the surface of the inner hole of the workpiece is polished along with the rotation of the boring rod, the original manual polishing is changed into mechanical polishing, the working efficiency is greatly improved, the surface roughness of the hole is reduced, the cutter flowers are uniform, the sense effect is good, and the stability of the dimension error and the shape and position error can be ensured.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a plan view of the present invention.

In the figure, 1-a square cutter body, 2-a slide block, 3-a grinding head seat, 4-a spring, 5-a locking screw, 6-an adjusting pad, 7-a slide block locking screw, 8-a chute and 9-a polishing medium.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and 2, the polishing tool for the surface of the hole comprises a square cutter body 1, wherein the square cutter body 1 is positioned in a square groove on a boring bar, can move left and right in the square groove, and cannot swing. The square cutter body 1 is characterized in that the same grooves are formed in the end faces of two ends of the square cutter body 1, adjusting pads 6 are arranged in the grooves, sliding blocks 2 are arranged on the adjusting pads 6, pits are formed in one sides, facing the adjusting pads 6, of the sliding blocks 2, springs 4 are arranged in the pits, the other ends of the springs 4 abut against the adjusting pads 6, and the sliding blocks 2 are ejected out by the springs 4 in a free state. The bottom surface of the sliding block 2 is provided with a long strip-shaped sliding groove 8, the direction of the sliding groove 8 is consistent with the length direction of the square cutter body 1, the square cutter body 1 is connected with a sliding block locking screw 7, the end part of the sliding block locking screw 7 is positioned in the sliding groove 8, and the sliding block 2 can be limited after being screwed down. The outer side of the sliding block 2 is provided with a groove, a grinding head seat 3 is arranged in the groove, the grinding head seat 3 is made of rubber materials, the outer side of the grinding head seat 3 is arc-shaped, the outer surface of the grinding head seat is wrapped by a polishing medium 9, and the grinding head seat 3 is fixed on the sliding block 2 through a locking screw 5.

The polishing tool is used on a boring machine, when the polishing tool works, after the polishing tool is installed on a boring bar, a spindle of the machine tool moves axially to drive the boring bar and the polishing tool to be screwed into a workpiece hole, a slide block locking screw 7 is loosened, slide blocks 2 on two sides are outwards popped out under the action of a spring 4, polishing media 9 on the surface of a grinding head seat 3 are in contact with the surface of the hole and press the inner surface of the hole, washing oil or polishing liquid is coated on the surface of the hole, the boring bar is driven to rotate through the rotation of the spindle, the polishing tool rotates along with the boring bar, and the polishing media 9 form friction on the surface of the hole along with the shape of the hole, so that the polishing effect is achieved. The grinding head seat 3 is made of rubber materials and is elastic, so that the grinding head seat has a good effect of adhering to the surface of the hole, and the polishing cutter can freely slide along the shape of the hole in the square groove of the boring bar cutter, so that the roughness of the surface of the hole is reduced after polishing, the cutter flowers are uniform, the sensory effect is good, and the stability of the dimension error and the form and position error can be ensured. After polishing, the slider locking screw 7 also prevents the slider 2 from popping out of the square blade body 1 due to the action of the spring 4 when the tool is removed from the hole.

According to the requirement of the surface roughness of the hole, the polishing medium 9 can be made of various materials such as sand paper, cow leather and the like with different specifications, can be replaced at any time, and can achieve the effect of reducing the surface roughness of the original hole. The pressure between the grinding head seat 3 and the hole wall and the size of the hole diameter are adjusted by adjusting the adjusting pads 6 on the two sides, so that the hole diameters with different sizes can be polished, and the grinding head seat can be made into a form similar to a floating reamer to expand the adjusting range. The grinding head seat 3 can also be made into a large-head circular arc type according to the diameter of the hole, so that the polishing area is increased, the loss of a polishing medium is reduced, the polishing precision is improved, and the polishing efficiency is improved. During polishing, machining parameters can be adjusted according to the performance of the machine tool, such as: the rotating speed of the main shaft, the feeding speed and the like strive to achieve the optimal polishing effect.

Claims (3)

1. A polishing tool for a bore surface, comprising a square cutter body (1), characterized in that: the square cutter is characterized in that sliding blocks (2) are arranged in grooves at two ends of the square cutter body (1), a spring (4) is arranged between the inner side of each sliding block (2) and the square cutter body (1), a sliding groove (8) is formed in the bottom surface of each sliding block (2), and a sliding block locking screw (7) connected with the square cutter body (1) is arranged in each sliding groove (8); the outer side of the sliding block (2) is connected with a grinding head seat (3) through a locking screw (5), and the outer surface of the grinding head seat (3) is wrapped with a polishing medium (9).

2. A polishing tool for a hole surface according to claim 1, characterized in that: the outer side of the grinding head seat (3) is arc-shaped.

3. A polishing tool for a hole surface according to claim 2, characterized in that: an adjusting pad (6) is arranged on the inner side of the groove of the square cutter body (1), and a spring (4) is arranged between the adjusting pad (6) and the sliding block (2).

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