Universal small cylindrical part grinding self-centering tool

Abstract

The utility model relates to the technical field of grinding self-centering tools, and discloses a universal grinding self-centering tool for small cylindrical parts, which comprises a mandrel group, a locking block is assembled outside the mandrel group, a locking cover is assembled outside the locking block, a limiting screw group is uniformly distributed between the locking cover and the locking block, and the limiting screw group is connected with the mandrel group. The outer portion of the mandrel set is in threaded connection with a locking screw, a roller guide cylinder is assembled on the left side of the mandrel set, ejector pins are assembled at the two ends of the roller guide cylinder, and the outer portion of the push rod is connected with a second spring. According to the universal grinding self-centering tool for the small cylindrical parts, the situation that a traditional tool cannot improve the high-precision machining condition for a roller guide cylinder is avoided, meanwhile, when a locking cover and a locking block are fixed through an additionally-arranged limiting screw set, the position of the limiting screw set is automatically locked, and the machining efficiency is improved. The traditional mode that the position of the limiting screw set needs to be locked through a pin shaft is avoided, so that the fixing steps are reduced, and the workpiece machining speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding self-centering tooling technical field, concretely is a kind of general small cylindrical part grinding self-centering tooling. BACKGROUND

[0002] In the field of marine diesel engine, the structure of camshaft driving fuel injection pump roller guide cylinder and air intake and exhaust roller guide cylinder is a very common structure, due to the roller guide cylinder lower part needs to install roller pin shaft, roller transmission, in turn lead to the existing processing tooling cannot be fixed well The device, and the outer circle of roller guide cylinder needs to be sliding friction in work, so the outer circle roughness requirement is relatively high and needs to be ground;

[0003] Therefore, a general small cylindrical part grinding self-centering tooling is urgently needed. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of general small cylindrical part grinding self-centering tooling to solve the technical problem that the lower part of roller guide cylinder needs to install roller pin shaft, roller transmission, in turn lead to the existing processing tooling cannot be fixed well The device, and the outer circle of roller guide cylinder needs to be sliding friction in work, so the outer circle roughness requirement is relatively high and needs to be ground.

[0006] (II) technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a kind of general small cylindrical part grinding self-centering tooling, comprising: core shaft group, the outside of the core shaft group is equipped with locking block, the outside of the locking block is equipped with locking cover, and limit screw group is evenly arranged between locking cover and locking block, the outside of the core shaft group is connected with locking screw, the left side of the core shaft group is equipped with roller guide cylinder, and the both ends of roller guide cylinder are equipped with thimble.

[0008] Preferably, the limit screw group includes assembly screw and nut, and the assembly screw is threadedly connected to the outside of the nut, the nut is embedded in the outside of the locking cover, and the nut can fix and limit the assembly screw.

[0009] Preferably, the inside of the assembly screw is slidably connected with push rod at both ends, and the inside of the assembly screw is slidably connected with square arm at both sides, the square arm can abut two clamping arms for reset, and the square arm can drive the assembly screw to rotate.

[0010] Preferably, the inner two ends of the nut are embedded with hollow columns, the inner part of the hollow column is slidably connected with a clamping arm, the inner part of the clamping arm is connected with a first spring, the clamping arm can slide in the inner part of the hollow column, and the first spring can drive the clamping arm to return after movement.

[0011] Preferably, the inner two ends of the assembly screw are provided with sliding grooves, and the sliding grooves can be assembled and installed with the third spring and the second spring, respectively.

[0012] Preferably, the outer part of the square arm is uniformly provided with a third spring, and the third spring is connected with the sliding groove, and the third spring can drive the square arm to return after movement.

[0013] Preferably, the outer part of the push rod is connected with a second spring, and the second spring is connected with the sliding groove, and the second spring can drive the push rod to return after movement.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a general small cylindrical part grinding self-centering tool has the following beneficial effects:

[0016] The universal small cylindrical part grinding self-centering tool, the cooperation of the locking screw, the locking cover, the locking block and the limiting screw group is used for locking the mandrel group, thereby providing a feasible solution for the grinding of the roller guide cylinder, and the device is suitable for the same structure as the roller guide cylinder, thereby improving the adaptability of the device during use, avoiding that the traditional tool cannot improve the high-precision machining condition of the roller guide cylinder, and the limiting screw group is automatically locked in position when the locking cover and the locking block are fixed, avoiding that the traditional type needs to lock the position of the limiting screw group with a pin shaft, thereby reducing the fixing steps and improving the machining speed of the workpiece. ACCURACY OF DRAWINGS

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 It is a plane section view of the utility model;

[0019] Figure 3 It is a front view of the limiting screw group of the utility model;

[0020] Figure 4 It is a front view of the limiting screw group of the utility model;

[0021] Figure 5 It is a front view of the hollow column of the utility model.

[0022] In the figure: 1, the core shaft group; 2, locking screw; 3, locking cover; 4, locking block; 5, limiting screw group; 51, assembly screw; 52, nut; 53, square arm; 54, hollow column; 55, clamping arm; 56, first spring; 57, push rod; 571, second spring; 58, third spring; 59, sliding groove; 6, roller guide cylinder; 7, ejector pin. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The utility model provides a technical scheme, please refer to Figure 1 and Figure 2 A general small cylindrical part grinding self-centering tool, it includes: the core shaft group 1, the outside assembly of core shaft group 1 is equipped with locking block 4, locking block 4 can be fixed under the monitoring of core shaft group 1, locking block 4 is equipped with locking cover 3 outside, and locking cover 3 and locking block 4 are evenly arranged with limiting screw group 5, limiting screw group 5 can cooperate with locking cover 3 and fix locking block 4, the outside of core shaft group 1 is connected with locking screw 2, locking screw 2 can adjust the position of device, the left side of core shaft group 1 is equipped with roller guide cylinder 6, roller guide cylinder 6 can assemble core shaft group 1, and both ends of roller guide cylinder 6 are equipped with ejector pin 7.

[0025] Please refer to Figure 3 、 Figure 4 and Figure 5 Limiting screw group 5 includes assembly screw 51 and nut 52, and assembly screw 51 is threadedly connected to the outside of nut 52, nut 52 is embedded on the outside of locking cover 3, nut 52 can fix and limit assembly screw 51, and both ends of the inside of assembly screw 51 are slidably connected with push rod 57.

[0026] Both sides of the inside of assembly screw 51 are slidably connected with square arm 53, square arm 53 can abut two clamping arms 55 to reset, and square arm 53 can drive assembly screw 51 to rotate, both ends of the inside of nut 52 are embedded with hollow column 54, and clamping arm 55 is slidably connected in the inside of hollow column 54.

[0027] The first spring 56 is connected between the interiors of the clamping arms 55, the clamping arms 55 can slide in the interior of the hollow column 54, and the first spring 56 can drive the clamping arms 55 to return after movement; the interiors of both ends of the assembly screw 51 are provided with sliding grooves 59, and the sliding grooves 59 can respectively assemble and install the third springs 58 and the second springs 571.

[0028] The third springs 58 are uniformly arranged on the exteriors of the square arms 53, the third springs 58 are connected with the sliding grooves 59, the third springs 58 can drive the square arms 53 to return after movement, and the exteriors of the push rods 57 are connected with the second springs 571, the second springs 571 are connected with the sliding grooves 59, and the second springs 571 can drive the push rods 57 to return after movement.

[0029] Firstly, the locking block 4 is assembled outside the mandrel group 1, then the locking block 4 is fixed by the locking cover 3, so that the locking block 4 cannot be separated from the mandrel group 1, the locking block 4 is fixed by the limiting screw set 5, the locking screw 2 is assembled outside the mandrel group 1, and the locking screw 2 is used for controlling the tightness of the locking block 4;

[0030] Then the mandrel group 1 is assembled in the pin shaft hole inside the roller guide cylinder 6, the tailstock hole faces the end face direction, the locking screw 2 is tightened to drive the locking block 4 to move, the mandrel group 1 is fixed in the pin shaft hole, and the tailstock 7 passes through the tailstock holes on both sides of the mandrel group 1 to process the outer circle of the roller guide cylinder 6;

[0031] When the limiting screw set 5 fixes the locking cover 3 and the locking block 4, the clamping arms 55 in the interiors of the nuts 52 are inserted into the recesses in the interiors of the assembly screws 51 to assemble the push rods 57, so that the assembly screws 51 and the nuts 52 are locked, when the limiting screw set 5 needs to be disassembled, the screwdriver is inserted into the interiors of the square arms 53 to drive the square arms 53 to descend, then the two push rods 57 are abutted to move relatively, the clamping arms 55 inserted into the interiors of the assembly screws 51 are pushed out, then the square arms 53 drive the assembly screws 51 to rotate, then the assembly screws 51 are rotated out, and the fixing of the locking cover 3 and the locking block 4 is released;

[0032] The locking screw 2, the locking cover 3, the locking block 4 and the limiting screw set 5 are matched to lock the mandrel group 1, thereby providing a feasible solution for the grinding of the roller guide cylinder 6, the device is suitable for the same structure as the roller guide cylinder 6, thereby improving the adaptability of the device in use, avoiding that the traditional tooling cannot improve the high-precision machining conditions of the roller guide cylinder 6, and automatically locking the position of the limiting screw set 5 when the limiting screw set 5 fixes the locking cover 3 and the locking block 4, thereby avoiding that the traditional type needs to lock the position of the limiting screw set 5 by the pin shaft, reducing the fixing steps, and improving the machining speed of the workpiece.

[0033] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A universal grinding self-centering tool for small cylindrical parts, comprising: The utility model provides a core shaft group (1), its characterized in be outside equipped with locking block (4) to the core shaft group (1), the outside of locking block (4) is equipped with locking cover (3), and locking cover (3) and locking block (4) between even distribution limit screw group (5), the outside of core shaft group (1) is connected with locking screw (2), the left side of core shaft group (1) is equipped with gyro wheel guide cylinder (6), and both ends of gyro wheel guide cylinder (6) are equipped with thimble (7).

2. The universal grinding self-centering tooling for small cylindrical parts of claim 1, wherein: The limit screw group (5) includes assembly screw (51) and nut (52), and the assembly screw (51) is threadedly connected to the outside of the nut (52), and the nut (52) is embedded on the outside of the locking cover (3).

3. The universal small cylindrical part grinding self-centering tool according to claim 2, characterized in that: Both ends of the inside of the assembly screw (51) are slidably connected with the push rod (57), and both sides of the inside of the assembly screw (51) are slidably connected with the square arm (53).

4. The universal small cylindrical part grinding self-centering tool according to claim 2, characterized in that: Both ends of the inside of the nut (52) are embedded with the hollow column (54), the inside of the hollow column (54) is slidably connected with the clamping arm (55), and the inside of the clamping arm (55) is connected with the first spring (56).

5. The universal small cylindrical part grinding self-centering tool according to claim 3, characterized in that: Both ends of the inside of the assembly screw (51) are provided with the sliding groove (59).

6. A universal small cylindrical part grinding self-centering tool according to claim 5, characterized in that: The outside of the square arm (53) is evenly provided with the third spring (58), and the third spring (58) is connected with the sliding groove (59).

7. The universal small cylindrical part grinding self-centering tool according to claim 5, characterized in that: The outside of the push rod (57) is connected with the second spring (571), and the second spring (571) is connected with the sliding groove (59).

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