Bearing supporting frame of centerless grinding machine

Abstract

The utility model discloses a centerless grinding machine bearing supporting frame which comprises a bearing frame (1), a bearing (2), a bearing pin (3) and a position adjusting groove (4). The position adjusting grooves (4) are respectively arranged at the left end and the right end in the bearing frame (1), the bearing (2) is placed in the bearing frame (1), the bearing pin (3) penetrates through the position adjusting grooves (4), and the bearing (2) is screwed into a nut to be fixed. When the grinding wheel drives the bolt to rotate in the machining process, the supporting frame is tangent to a part, the supporting frame cannot be scratched, the hindering effect cannot be generated when the bolt is rotationally machined, the quality of a thread rolling blank cannot be affected, and the thread rolling device can be universally used for various bolt specifications and is low in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding machines, in particular to a bearing support frame of a centerless grinding machine. Background Art

[0002] When grinding the thread rolling diameter of a long-rod bolt, the processing flow of the part is to first finish the polished rod and then grind it. The polished rod is the basis for measuring the geometric tolerances of the grinding part. Since the bolt rod is long, the bolt is ground on the outside of the grinding wheel during the grinding process. In order to maintain the balance of the entire bolt during processing, it is necessary to partially support the part exposed to the outside. Modern CNC grinders can meet the requirements of completing the polished rod and the thread rolling blank at one time by trimming the shape of the grinding wheel. However, due to the large specifications of the bolts and the long rods, the cutting force of the grinding wheel of the grinder cannot drive the bolt to complete the grinding of the polished rod and the thread rolling blank at one time; therefore, the prior art processing flow is divided into two grinding steps, one for grinding the entire polished rod and the second for grinding the thread rolling diameter. The prior art processing method is still carried out according to the above two steps, except that a simple support structure is added to the exposed part. There are two structures of simple support frames, one is a point contact support (see Figure 8 ), and the other is surface contact support (see Fig. 9 ), from the processing point of view, it has a certain support and balance effect on the long rod bolt thread rolling diameter grinding. Figure 8-9 It can be seen that the support frame can only support the up and down positions, but cannot control the left and right swing; see Fig. 9 There is an arc at the bottom of the support frame, which supports and limits the processed parts. However, since the arc is not necessarily tangent to the diameter of the bolt rod, the grinding wheel drives the bolt to rotate during processing. Since the support arc is not tangent to the part, it may scratch the support part. The support part is in surface contact, which may hinder the bolt rotation processing and have a certain impact on the quality of the processed thread rolling blank. The support frame with an arc cannot be universal. In order to solve the problem of multiple bolt specifications, multiple sets of brackets need to be manufactured for different specifications. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a bearing support frame for a centerless grinder which is common to a variety of bolt specifications and has low cost, so that when the grinding wheel drives the bolt to rotate during processing, the support frame is tangent to the part and will not be scratched. No obstruction will be caused during the rotation processing of the bolt, and the quality of the thread rolling blank will not be affected.

[0004] The utility model discloses a centerless grinder bearing support frame, comprising a bearing frame, a bearing, a bearing pin and a position adjustment groove, and is characterized in that position adjustment grooves are respectively arranged at the left and right ends of the bearing frame, the bearing is placed in the bearing frame, the bearing pin passes through the position adjustment groove, and the bearing is screwed into a nut for fixing.

[0005] The bearing frame is provided with an arc groove inside, and the bearing can be moved and adjusted in the arc groove.

[0006] The position adjustment groove is arc-shaped, and both ends of the bearing pin can be moved and adjusted within the arc of the position adjustment groove.

[0007] The bearing frame is fixedly connected to the fixing frame.

[0008] Compared with the prior art, the utility model has obvious beneficial effects. It can be seen from the above technical scheme that: by setting position adjustment grooves at the left and right ends of the bearing frame, the bearing is placed in the bearing frame, the bearing pin passes through the position adjustment groove, and the bearing is screwed into the nut to fix it. The principle of three-point positioning is used, that is, the axis of the processed part is taken as the center, and two bearings are used as support points, and the support points are tangent to the center point of the part's light rod; the center of the two bearings is the same center as the axis of the processed part. During grinding, the part is driven to rotate by the grinding wheel, and the outer circles of the two bearings are tangent to the bolts, and relative movement occurs under the action of force. Since the bearings themselves can rotate, they will not generate resistance to the rotating parts, and play a supporting and positioning role. During the processing, the supporting and positioning function of the bearing frame ensures that the axis of the rotating part is in a straight line, and the balance of the part is ensured. By adjusting the height of the support frame, the grinding process of the thread rolling blank is realized to meet the process requirements. One bracket can replace multiple sets of bearings according to the diameter of the processed bolts to achieve a universal purpose. The bearing is fixed on the bracket by a bearing pin. According to the diameter of the processed bolt, it can be adjusted in the bearing position groove of the bearing bracket within a certain angle range, thereby increasing the versatility of the centerless grinder bearing support frame and reducing the tooling cost. In short, when the grinding wheel drives the bolt to rotate during processing, the support frame is tangent to the part and will not scratch the support frame. There will be no obstruction during the bolt rotation processing, and the quality of the thread rolling blank will not be affected. It can be used for a variety of bolt specifications and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a left side view of the bearing frame of the utility model;

[0011] Figure 3 It is a top view of the bearing frame of the utility model;

[0012] Figure 4 It is the use state of the utility model Figure 1 ;

[0013] Figure 5 It is the use state of the utility model Figure 2 ;

[0014] Figure 6 It is the use state of the utility model Figure 3 ;

[0015] Figure 7 It is a structural schematic diagram of the parts and the processing positions of the parts of the utility model;

[0016] Figure 8 It is a structural schematic diagram of a point contact support in the prior art;

[0017] Fig. 9 It is a structural schematic diagram of the surface contact support of the prior art.

[0018] Marking in the figure

[0019] 1. Bearing frame; 2. Bearing; 3. Bearing pin; 4. Position adjustment slot; 5. Fixed frame; 6. Operating table; 7. Parts; 8. Grinding wheel; 9. Part processing position; 10. Positioning rod; 11. Support plate; 12. Support frame. DETAILED DESCRIPTION

[0020] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0022] The utility model discloses a centerless grinder bearing support frame, comprising a bearing frame 1, a bearing 2, a bearing pin 3, a position adjustment groove 4, and a fixing frame 5, wherein the bearing frame 1 is provided with position adjustment grooves 4 at both left and right ends, the bearings 2 are placed in the bearing frame 1 at both left and right ends, the bearing pin 3 passes through the position adjustment groove 4, the bearing 2 is screwed into a nut for fixing, an arc groove is provided inside the bearing frame 1, the bearing 2 can be moved and adjusted in the arc groove, the position adjustment groove 4 is arc-shaped, the two end heads of the bearing pin 3 can be moved and adjusted in the arc of the position adjustment groove 4, and the bearing frame 1 is fixedly connected to the fixing frame 5.

[0023] When used; see Figure 4-6 , the processing position 9 of the processed part 7 is mounted on the support plate 11 of the CNC grinder, the positioning rod 10 is against the end of the processing position 9 of the part, and the fixing frame 5 is fixed on the centerless grinder operating table 6 by screws. The center of the fixing frame 5 can be adjusted to the left and right position by the length of the fixing screws at both ends. The upper and lower positions can be adjusted within a certain range by the position of the mounting fixing frame 5 and the position of the bearing pin 3. According to the diameter of the rod of the processed part 7, the bearing frame 1 is adjusted to ensure that the bearing 2 is tangent to the outer circle of the processed part 7 until the requirements are met, and the grinding wheel 8 can be used to grind the rolling diameter of the processing position 9 of the part.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A centerless grinder bearing support frame, comprising a bearing frame (1), a bearing (2), a bearing pin (3), and a position adjustment groove (4), characterized in that; Position adjustment grooves (4) are respectively arranged at the left and right ends of the bearing frame (1), a bearing (2) is placed in the bearing frame (1), a bearing pin (3) passes through the position adjustment groove (4), and the bearing (2) is screwed into a nut to be fixed.

2. A centerless grinder bearing support frame as claimed in claim 1, characterized in that; The bearing frame (1) is provided with an arc-shaped groove inside, and the bearing (2) can be moved and adjusted in the arc-shaped groove.

3. A centerless grinder bearing support frame as claimed in claim 1, characterized in that; The position adjustment groove (4) is arc-shaped, and both ends of the bearing pin (3) can be moved and adjusted within the arc of the position adjustment groove (4).

4. A centerless grinder bearing support frame as claimed in claim 1, characterized in that; The bearing frame (1) is fixedly connected to the fixing frame (5).

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