Adjustable positioning clamp for grinding eccentric inner hole of shaft part

Abstract

The utility model discloses a shaft part eccentric bore grinding adjustable positioning fixture, which comprises a positioning piece, a mounting piece and a first adjusting piece, the front end of the positioning piece is symmetrically provided with upper adjusting grooves, bolts penetrate through the inner sides of the upper adjusting grooves, the inner end of the positioning piece is provided with a moving groove, and the moving groove is matched with the mounting piece. The moving groove is formed in the rear end of the upper adjusting groove, and limiting strips are symmetrically and fixedly installed at the front end of the positioning piece. Clamping grooves are symmetrically formed in the rear end of the mounting piece, and the left end and the right end of the positioning piece are in threaded connection with lateral fastening bolts; the rear end of the first adjusting part is tightly attached to the front end of the positioning part, the lower end of the first adjusting part is tightly attached to the upper end of the mounting part, and the bolt is in threaded connection to the inner end of the first adjusting part. And positioning is accurate.

Description

Technical Field

[0001] The utility model relates to the field of positioning fixtures, in particular to an adjustable positioning fixture for grinding eccentric inner holes of shaft parts. Background Art

[0002] Shaft parts are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission components, transmit torque and bear loads. According to the different structural forms of shaft parts, they can generally be divided into three categories: smooth shafts, stepped shafts and special-shaped shafts; or divided into solid shafts, hollow shafts, etc. When processing shaft parts, it is sometimes necessary to grind eccentric holes, and it is necessary to use fixtures to clamp and position the shaft parts for processing.

[0003] For example, the adjustable positioning fixture for eccentric inner hole grinding of shaft parts disclosed in the utility model with authorization announcement number CN218169705U mainly includes a clamping base, a locking device and a supporting device. The locking device is located on the upper part of the clamping base and connected to the clamping base. It can quickly and efficiently position the rod body of the shaft part in the axial and circumferential directions, meet the roundness and cylindricity requirements of the eccentric inner hole, and ensure the processing accuracy of the eccentric inner hole grinding.

[0004] This prior art also has the following problems when used:

[0005] The supporting device is fixed to the clamping structure, which makes it inconvenient to adjust the eccentricity, and the stability of the installation of shaft parts is general. Therefore, we propose an adjustable positioning fixture for eccentric inner hole grinding of shaft parts to solve the above problems. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an adjustable positioning fixture for grinding eccentric inner holes of shaft parts, which can solve the technical problems raised in the above background technology that the supporting device and the clamping body structure of the existing adjustable positioning fixture for grinding eccentric inner holes of shaft parts are fixed, which makes it inconvenient to adjust the eccentricity and generally affects the stability of the installation of shaft parts.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a positioning member, a mounting member and a first adjusting member,

[0008] The front end of the positioning member is symmetrically provided with an upper adjustment groove, the inner side of which is penetrated by a bolt, the inner end of the positioning member is provided with a moving groove, the moving groove is arranged at the rear end of the upper adjustment groove, and the front end of the positioning member is symmetrically fixedly provided with a limit strip;

[0009] The rear end of the mounting member is symmetrically provided with a clamping groove, and the left and right ends of the positioning member are threadedly connected with lateral fastening bolts;

[0010] The rear end of the first adjusting member is tightly fitted on the front end of the positioning member, the lower end of the first adjusting member is tightly fitted on the upper end of the mounting member, and the bolt is threadedly connected to the inner end of the first adjusting member.

[0011] As a preferred technical solution of the utility model, a round seat is mounted on the rear end of the bolt, and the round seat is mounted on the inner end of the movable groove.

[0012] As a preferred technical solution of the utility model, a level adjustment bolt is provided at the lower end of the positioning member, and a reinforcing bolt is threadedly connected to the inner end of the level adjustment bolt.

[0013] As a preferred technical solution of the utility model, the upper end of the reinforcing bolt is snap-fitted with a chassis seat, the front end of the chassis seat is snap-fitted with a processing piece, and the outer end of the processing piece is snap-fitted with the inner end of the mounting piece.

[0014] As a preferred technical solution of the utility model, a mounting hole is opened at the inner end of the positioning member, and the chassis seat is snap-fitted and mounted inside the mounting hole.

[0015] As a preferred technical solution of the utility model, a lower adjustment groove is opened at the front end of the positioning member, and a second adjustment member is installed at the front end of the positioning member through the lower adjustment groove and bolts.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] 1. A first adjusting member, an upper adjusting groove, a moving groove, a round seat and bolts are provided. By loosening the bolts outward, the first adjusting member can be moved up and down at the front end of the positioning member, and the round seat can be moved at the inner end of the moving groove, so as to facilitate the adjustment of the eccentricity;

[0018] 2. It is equipped with mounting parts, card slots, limit strips and chassis seats. The mounting parts are engaged with the limit strips at the front end of the positioning parts through the card slots to form a stable structure. The mounting parts can move up and down at the front end of the positioning parts to adjust the eccentricity and move the workpiece. The rear end of the workpiece is adjusted and fixed through the chassis seat. The structure is stable and durable, the operation is simple and convenient, and the positioning is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of an adjustable positioning fixture for grinding eccentric inner holes of shaft parts of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the upper adjusting groove of the adjustable positioning fixture for grinding the eccentric inner hole of shaft parts of the utility model;

[0021] Figure 3This is a schematic diagram of the side cutaway structure of the adjustable positioning fixture for grinding the eccentric inner hole of shaft parts of the utility model;

[0022] Figure 4 The utility model is an adjustable positioning fixture for grinding eccentric inner holes of shaft parts Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 This is a schematic diagram of the top view of the cross-section structure of the movable groove of the adjustable positioning fixture for grinding the eccentric inner hole of shaft parts of the utility model;

[0024] Among them: 1. Positioning piece; 2. Mounting piece; 3. First adjusting piece; 4. Upper adjusting slot; 5. Moving slot; 6. Round seat; 7. Bolt; 8. Mounting hole; 9. Limiting strip; 10. Processing piece; 11. Lateral fastening bolt; 12. Slot; 13. Reinforcement bolt; 14. Second adjusting piece; 15. Lower adjusting slot; 16. Chassis seat; 17. Horizontal adjusting bolt. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0026] Example

[0027] Please refer to Figure 1-5 As shown, the utility model provides a technical solution: an adjustable positioning fixture for grinding the eccentric inner hole of shaft parts;

[0028] The front end of the positioning member 1 is symmetrically provided with an upper adjustment slot 4, the inner side of which is penetrated by a bolt 7, the inner end of the positioning member 1 is provided with a movable slot 5, and the movable slot 5 is arranged at the rear end of the upper adjustment slot 4, the front end of the positioning member 1 is symmetrically fixed with a limit strip 9, the lower end of the positioning member 1 is provided with a horizontal adjustment bolt 17, and the inner end of the horizontal adjustment bolt 17 is threadedly connected with a reinforcing bolt 13. The upper end of the reinforcing bolt 13 is snap-fitted with a chassis seat 16, the front end of the chassis seat 16 is snap-fitted with a processing piece 10, and the outer end of the processing piece 10 is snap-fitted with the inner end of the mounting member 2. The inner end of the positioning member 1 is provided with a mounting hole 8, and the chassis seat 16 is snap-fitted with the inside of the mounting hole 8. The front end of the positioning member 1 is provided with a lower adjustment slot 15, and the front end of the positioning member 1 is mounted with a second adjustment piece 14 through the lower adjustment slot 15 and the bolt 7, so as to facilitate the adjustment of the eccentricity;

[0029] The rear end of the mounting member 2 is symmetrically provided with a slot 12, and the left and right ends of the positioning member 1 are threadedly connected with lateral fastening bolts 11; the rear end of the first adjusting member 3 is tightly fitted to the front end of the positioning member 1, and the lower end of the first adjusting member 3 is tightly fitted to the upper end of the mounting member 2, and the bolt 7 is threadedly connected to the inner end of the first adjusting member 3. The rear end of the bolt 7 is snap-fitted with a round seat 6, and the round seat 6 is snap-fitted with the inner end of the moving groove 5, with a stable and durable structure, simple and convenient operation, and accurate positioning.

[0030] Specific working principle:

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the adjustable positioning fixture for eccentric inner hole grinding of shaft parts is used, the mounting member 2 is installed between the first adjusting member 3 and the second adjusting member 14, and the mounting member 2 is engaged with the limit strip 9 through the card slot 12 to achieve lateral fixation of the mounting member 2, and longitudinal fixation is achieved through the first adjusting member 3 and the second adjusting member 14. According to processing needs, the axial distance of the mounting member 2 is adjusted. When adjusting, the bolt 7 is loosened outward, and the distance between the first adjusting member 3 and the positioning member 1 becomes larger, and the first adjusting member 3 can be moved upward or downward, and the second adjusting member 14 is adjusted together with the first adjusting member 3, and the mounting member 2 moves together with the first adjusting member 3, and the bolt 7 moves at the inner end of the upper adjusting groove 4, and the round seat 6 moves at the inner end of the movable groove 5. When it moves to the desired position, the bolt is tightened inward. 7, the rear end of the bolt 7 rotates at the inner end of the round seat 6, so that the round seat 6 fits tightly backward inside the movable groove 5, fixes the first adjusting member 3 and the second adjusting member 14, and the position of the mounting member 2 is also adjusted, and then the reinforcing bolt 13 at the inner end of the horizontal adjusting bolt 17 is rotated downward or upward, so that the reinforcing bolt 13 drives the chassis seat 16 to move upward or downward at the inner end of the mounting hole 8, so that the axis of the chassis seat 16 and the axis of the mounting member 2 are in a straight line, and the workpiece 10 to be processed is engaged with the inside of the mounting member 2, and then the lateral fastening bolts 11 at the left and right ends of the mounting member 2 are tightened to fix the workpiece 10, and a series of operations of the adjustable positioning fixture for eccentric inner hole grinding of shaft parts are completed above. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An adjustable positioning fixture for grinding eccentric inner holes of shaft parts, comprising: a positioning member (1), a mounting member (2) and a first adjusting member (3), characterized in that: The front end of the positioning member (1) is symmetrically provided with an upper adjustment groove (4), the inner side of which is penetrated by a bolt (7), the inner end of the positioning member (1) is provided with a movable groove (5), the movable groove (5) is arranged at the rear end of the upper adjustment groove (4), and the front end of the positioning member (1) is symmetrically fixed with a limit strip (9); The rear end of the mounting member (2) is symmetrically provided with a clamping groove (12), and the left and right ends of the positioning member (1) are threadedly connected with lateral fastening bolts (11); The rear end of the first adjusting member (3) is tightly fitted on the front end of the positioning member (1), the lower end of the first adjusting member (3) is tightly fitted on the upper end of the mounting member (2), and the bolt (7) is threadedly connected to the inner end of the first adjusting member (3).

2. The adjustable positioning fixture for grinding eccentric inner holes of shaft parts according to claim 1 is characterized in that: A round seat (6) is mounted on the rear end of the bolt (7), and the round seat (6) is mounted on the inner end of the movable groove (5).

3. The adjustable positioning fixture for grinding eccentric inner holes of shaft parts according to claim 1 is characterized in that: A level adjustment bolt (17) is provided at the lower end of the positioning member (1), and a reinforcing bolt (13) is threadedly connected to the inner end of the level adjustment bolt (17).

4. The adjustable positioning fixture for grinding eccentric inner holes of shaft parts according to claim 3 is characterized in that: The upper end of the reinforcing bolt (13) is snap-fitted with a chassis seat (16), the front end of the chassis seat (16) is snap-fitted with a processing piece (10), and the outer end of the processing piece (10) is snap-fitted with the inner end of the mounting piece (2).

5. The adjustable positioning fixture for grinding eccentric inner holes of shaft parts according to claim 4 is characterized in that: The inner end of the positioning member (1) is provided with a mounting hole (8), and the chassis seat (16) is snap-fitted and mounted inside the mounting hole (8).

6. The adjustable positioning fixture for grinding eccentric inner holes of shaft parts according to claim 1 is characterized in that: The front end of the positioning member (1) is provided with a lower adjustment groove (15), and the front end of the positioning member (1) is mounted with a second adjustment member (14) via the lower adjustment groove (15) and a bolt (7).

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