CN200963780Y - Grinding tool - Google Patents

Abstract

A grinding tool, especially a grinding tool capable of grinding special-shaped grooves, includes a shaft sleeve and a shaft rod. The main point is that a steel ball is contained at the top of the shaft rod. The utility model has the advantages that it can precisely grind grooves with a special shape so that the surface roughness, hardness and roundness can be improved, and it can also repair the shape error produced in the previous processing.

Description

a grinding tool

technical field

The utility model relates to a grinding tool, in particular to a grinding tool capable of grinding grooves with special shapes.

Background technique

The surface hardness and roughness of the grooves processed on the parts by the milling machine cannot meet the requirements for use, so they must be ground. Traditional technology can only use manual grinding when grinding grooves with special shapes. However, manual grinding is difficult to reciprocate along the trajectory required by the process. Moreover, the strength of manual grinding cannot be evenly applied to the groove, resulting in insufficient precision of the processed parts, and there are shape errors in accordance with the design requirements.

Utility model content

The purpose of the utility model is to provide a grinding tool, which can not only accurately grind grooves with special shapes to improve the surface roughness, hardness and roundness, but also repair the shape errors produced in the previous processing.

The technical solution to achieve the purpose of the utility model is: a grinding tool includes a shaft sleeve and a shaft rod, and its unique feature is that a steel ball is contained at the top of the shaft rod.

Moreover, the spring is sheathed outside the axle rod and embedded in the groove of the axle sleeve.

Or the spring is located between the shaft rod and the shaft sleeve, and the two ends are respectively in contact with the shaft sleeve and the shaft rod.

The utility model has the advantages that: 1. The shaft sleeve is connected with the numerical control machine tool, the top of the shaft rod has a concave spherical pit, and the steel ball is contained in the concave spherical pit. Using CNC machine tools and standard steel balls, the movement accuracy and dimensional accuracy of the steel balls are very high. The sleeve is clamped on the spindle of the CNC machine tool, the steel ball is continuously pressurized by the spring, and the track of the groove is repeated without interruption. The steel balls roll continuously in the set trajectory, changing the crystal phase structure of the groove surface and improving its hardness, roughness and roundness. This will not only not change the shape of the groove, but also repair the shape error caused by the previous processing. 2. The spring sleeve is outside the shaft rod and embedded in the groove of the shaft sleeve to ensure that the steel ball is evenly stressed.

Description of drawings

Fig. 1 is a sectional view of the grinding tool.

Fig. 2 is a sectional view of the spring between the bushing and the shaft.

Fig. 3 is a schematic view of the containment where the top end of the shaft does not exceed the diameter of the steel ball.

Fig. 4 is a schematic diagram of the containment where the top of the shaft is just at the same level as the diameter of the steel ball.

Fig. 5 is a schematic view of the inclusion of the top end of the shaft exceeding the diameter of the steel ball.

Specific implementation method

Referring to Figures 1 to 5, the utility model will be further described below in conjunction with the embodiments.

The purpose of the utility model is to provide a grinding tool, which includes a shaft sleeve 4 and a shaft rod 2 . It is unique in that: the steel ball 1 is accommodated at the top of the shaft 2 .

The inclusion can be that the top of the shaft 2 does not exceed the diameter of the steel ball 1 (as shown in Figure 3); it can also be that the top of the shaft 2 is just at the same level as the diameter of the steel ball 1 (as shown in Figure 4); It is the inclusion of the top end of the shaft rod 2 exceeding the diameter of the steel ball 1 (as shown in Figure 5).

When the radius of curvature of the groove to be processed is large enough, two or more steel balls 1 can also be arranged on the top of the shaft rod 2. The principle is that it can smoothly reciprocate along the groove without interference.

The sleeve 4 is clamped on the spindle of the CNC machine tool, the steel ball 1 is continuously pressurized by the intermediate spring 3, and the track of the groove is repeated without interruption. The steel ball 1 rolls continuously in the set trajectory, changing the crystal phase structure on the surface of the groove, and improving its hardness, roughness and roundness. This will not only not change the shape of the groove, but also repair the shape error caused by the previous processing.

And the spring 3 is sleeved outside the shaft rod 2 and embedded in the groove 6 of the shaft sleeve 4 (as shown in FIG. 1 ).

The axle sleeve 4 is connected with the shaft rod 2 by a spring, which ensures that the steel ball 1 is evenly stressed.

A further technical solution may also be that the spring 3 is located between the shaft 2 and the shaft sleeve 4 and the two ends are respectively in contact with the shaft sleeve 4 and the shaft 2 (as shown in FIG. 2 ).

Claims (3)

1. a grinding tool comprises axle sleeve and axostylus axostyle, it is characterized in that: steel ball is inclusive in this axostylus axostyle top.

2. grinding tool according to claim 1 is characterized in that: spring housing is outside axostylus axostyle and be embedded in the groove of axle sleeve.

3. grinding tool according to claim 1 is characterized in that: spring is between axostylus axostyle and the axle sleeve and two ends contact with axle sleeve and axostylus axostyle respectively.

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