RU1816660C - Method and device for working pieces grinding by abrasive band using - Google Patents

Abstract

Usage: for belt grinding parts such as bodies of revolution. SUMMARY OF THE INVENTION: A workpiece is placed between two branches of abrasive belts of opposed tape mechanisms. Movement in opposite directions is reported to each of the tapes, and rotation and translational movement along the working branches of the tapes are reported to the product. The parts to be processed are additionally provided with oscillatory axial vibrations and angular vibrations in the plane of the branches of the abrasive belts. The device for belt grinding is made in the form of tape drive mechanisms mounted on top of one another with axes of tension and guide rollers located in parallel planes. The device is equipped with guides mounted on both sides of the rollers and parallel to each other and placed on each of them with a workpiece holder made. in the form of a housing in the elastic support of which a fixing unit spring-loaded relative to the shank is rotatably mounted on the shank. The fixing unit can be made in the form of a rotating center, clamp, leash, etc. 2 sec and 1 s, p. f-ly, 3 ill. ate with

Description

The invention relates to mechanical engineering and can be used for belt grinding of parts such as bodies of revolution.

The aim of the invention is to improve the quality of grinding.

Figure 1 is a diagram of an apparatus for implementing the method; figure 2 is the same, a top view; in Fig.Z - node fixing the processed products in the holder.

The belt grinding method can be implemented using a device containing a drive 1, an upper tape drive mechanism 2, a lower tape drive mechanism 3, which drive the upper 4 and lower 5 abrasive belts, guides 6, holders 7 of the workpiece 8,

The holders 7, in turn, include a housing 9 having a sleeve 10, the opening of which corresponds to the size and shape of the cross section of the guide, and a cup 11 in which a shank .13 is mounted, bearing a sleeve 15 spring-loaded with elastic epimetry 14, on which there are bearings 16, a fixing unit 17 is installed in the form of a rotating center or a clamp, a leash, and the like.

The proposed method of belt grinding is implemented using the proposed device as follows. From the drive 1, the rotational movement is transmitted by the drums of the upper 2 and lower Zlenotropotnyh mechanisms. Drive drums rotate in one direction, which provides multidirectionality

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the movement of the working branches of the abrasive belts 4 and 5.

The parts 8 to be processed are fixed in the fixing nodes of the holders. When they get into the working area, their cylindrical surfaces come in contact with abrasive belts 4 and 5.

The axis of rotation of the part and the direction of translational movement form an angle a. The angle «is provided constructively - the installation angle of the workpiece is equal to a. As a result of applying from the ice from the upper and lower abrasive belts on the surface to be treated, a common set of tracks is formed in the form of multidirectional helical lines such as multi-start left and right threads,

During rotational-translational movement of workpieces installed at an angle a. to the direction of movement, under the action of cutting forces uneven across the width of the tape, the elastic elements 12, deforming, provide angular oscillations of the axis of rotation of the workpiece to the direction of movement, i.e. fluctuations in the angle. In turn, under the influence of the same uneven forces, the elastic elements 14, deforming, cause axial vibrations of the system 14-15-16-17-8.

As a result, angular oscillations and axial oscillations provide angular and axial oscillations of the workpiece, which leads to overlapping processing marks. This improves the processing quality of the surface layer of the product.

Examples of the method.

1. Grinding operation. The diameter of the workpiece is 56 mm, the material is steel 45, the magnitude of the angular oscillation is up to 2 ... 2.5 °, the magnitude of the axial oscillation is 1.5 ... 2 mm.

2. Polishing operation. The diameter of the workpiece is 56 mm, the material is steel 45, the magnitude of the angular oscillation is up to 1 ... 1.5 °, the magnitude of the axial oscillation is 0.5 ... 1 mm.

3. Polishing operation. The diameter of the workpiece is 56 mm, the material is steel 40KhNZA, the magnitude of the angular oscillation is up to 1.5.,. 2 °, the magnitude of the axial oscillation is 1 ... 1.5 mm.

Claims (3)

1. The method of belt grinding, in which the workpiece is placed between two branches of abrasive belts, of the opposite tape drive mechanisms, each of the tape branches is reported to move in opposite directions, and the product is rotated and translationally move along the branches tapes, characterized in that, in order to improve the quality of grinding, the parts additionally report oscillatory axial vibrations and angular vibrations in the plane of the branches of the abrasive belts; 2. A device for belt grinding, made in the form of tape drives mounted one above the other with parallel surfaces located in parallel planes. the axes of their tension and guiding guides, with the exception that in order to improve the quality of grinding, the device is equipped with guides installed on both sides of the rollers and parallel to one another the holder of the workpiece placed on each of them, made in the form of a body, in the elastic support of which a fixing unit spring-loaded relative to the shank is rotatably mounted on the shank. 3. The device according to claim 2, characterized in that the fixing unit is made in the form of a rotating center.