Centering installation clamp for precise grinding wheel

Abstract

A centering installation clamp of a precise grinding wheel is arranged at the output end of a motor, clamps the grinding wheel and comprises an installation base, the front end of the installation base is provided with a horn mouth, the edge of the installation base is connected with an outer collecting assembly, the center of the installation base is provided with an inner supporting assembly, the grinding wheel is clamped between the outer collecting assembly and the inner supporting assembly, and the rear end of the installation base is fixedly connected with an output shaft of the motor. The motor output shaft serves as a center shaft of the mounting base, the outer binding assembly and the inner supporting assembly. The precise grinding wheel self-centering clamping device is novel in conception and ingenious in design, effectively achieves self-centering installation and stable clamping of a precise grinding wheel, and is remarkable in effect.

Description

Technical Field

[0001] The utility model belongs to the field of precision equipment, especially involving abrasive processing, and specifically is a grinding wheel centering installation fixture for precision abrasives. Background Art

[0002] The grinding wheel, also known as a vitrified abrasive tool, is the most critical component in grinding equipment. It is generally in the shape of a disc or cylinder with a hole in the center. On one hand, the performance of the grinding wheel affects the effect of grinding, such as different selections of abrasive, grit, hardness, binder, shape, and size will bring completely different effects. On the other hand, the installation state of the grinding wheel in the grinding equipment not only affects the grinding effect but also the safety of the processing environment. If the grinding wheel is installed eccentrically or unbalanced, it will not only lead to unstable grinding effect but also may cause the rupture of the grinding wheel itself and vibration of the equipment.

[0003] Precision abrasives have higher requirements for grinding, which puts stricter requirements on the installation of the grinding wheel. There are devices for centering the grinding wheel during installation in the prior art, which can achieve good effects on centering and static balance maintenance during the installation of the grinding wheel, but the structure is complex and the operation is inconvenient. Before installing the grinding wheel, the installation stability of the device needs to be set first. Summary of the Utility Model

[0004] To solve the deficiencies of the prior art, the utility model provides a centering installation fixture for precision grinding wheels, which can realize self-centering installation and stable clamping of the grinding wheel.

[0005] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0006] A centering installation fixture for precision grinding wheels is arranged at the output end of the motor and clamps the grinding wheel. In the utility model, it includes an installation seat. The front end of the installation seat is set as a flared opening, and an outer convergence component is connected at the edge, and an inner support component is arranged at the center. The grinding wheel is clamped between the outer convergence component and the inner support component. The rear end of the installation seat is fixedly connected to the output shaft of the motor. The installation seat, the outer convergence component, and the inner support component are all centered on the output shaft of the motor.

[0007] In the utility model, the outer convergence component includes a limit ring and a convergence ring. The limit ring is annular and is located in front of the front edge of the installation seat. Connecting rods are evenly distributed between the limit ring and the front edge of the installation seat. There are gaps between adjacent connecting rods, and a limit elastic sheet is arranged in the gap. One end of the limit elastic sheet is fixed to the front edge of the installation seat. The middle part of the limit elastic sheet bends outward, and the other end is close to the limit ring on the inner side of the limit ring and bends outward from the front. The convergence ring is sleeved outside the installation seat, as well as outside the limit ring and the connecting rods.

[0008] Further, the outer diameter of the limiting ring is the same as the outer diameter of the cylinder where the connecting rod is located, and there is a clearance fit with the inner side of the converging ring.

[0009] Further, external threads are provided on the outer side of the limiting ring and the outer side of the connecting rod. Correspondingly, internal threads are provided on the inner side of the converging ring.

[0010] Further, an annular retaining piece is provided at the rear side of the converging ring. The inner diameter of the annular retaining piece is smaller than the maximum outer diameter of the mounting seat to prevent the converging ring from falling off.

[0011] Further, anti-slip lines are provided on the outer side of the converging ring.

[0012] In the present utility model, the inner support assembly includes support elastic pieces arranged in an annular shape. There are at least three support elastic pieces. One end of each support elastic piece is fixedly arranged at the center of the mounting seat, and the other end is slightly bent outward, arranged in a flower shape. Support bolts are arranged inside the support elastic pieces. Each support bolt includes an inner section and an outer section. The inner section is conical and penetrates into the space surrounded by the support elastic pieces.

[0013] Further, internal threads are provided on the inner side of the middle part of the support elastic pieces. The inner section of the support bolt is provided with corresponding external threads. A "-" shaped or "+" shaped groove is preset at the end of the outer section of the support bolt.

[0014] Further, a buffer tube is sleeved on the outer section of the support bolt. One end of the buffer tube near the end of the outer section of the support bolt is provided with an outward curling edge. A spring is sleeved between the curling edge and the inner side of the end of the outer section of the support bolt. Two ends of the spring are respectively fixed to the curling edge and the inner side of the end of the outer section of the support bolt. The outer diameter of the buffer tube is smaller than the inner diameter of the center hole of the grinding wheel.

[0015] Further, a necking tube is sleeved on the outside of the support elastic pieces. The outer diameter of the necking tube is larger than the inner diameter of the center hole of the grinding wheel. An installation groove for accommodating the necking tube is provided at the center of the mounting seat. The end of the support elastic piece is fixed in the installation groove.

[0016] Compared with the prior art, the present utility model has the following advantages:

[0017] This application grabs the grinding wheel by means of external restraint and realizes the self-centering of the grinding wheel by means of internal support. The internal and external cooperation centers and installs the grinding wheel, effectively maintaining the stability of the grinding wheel;

[0018] The outer converging assembly of this application uses the converging ring to push the limiting elastic piece to elastically press the side surface of the grinding wheel, effectively avoiding the eccentric state that may occur during the installation of the grinding wheel;

[0019] The inner support assembly of this application uses the support bolt to push one end of the support elastic piece to elastically press the center hole of the grinding wheel, realizing the self-centering of the grinding wheel;

[0020] In this application, a buffer tube is used to achieve the compression of the grinding wheel by the inner support component from the outside, so that when the support bolt is tightened by thread, the grinding wheel is axially compressed, avoiding the shaking of the grinding wheel.

[0021] Therefore, the utility model has novel conception and ingenious design, effectively realizing the self-centering installation and stable clamping of the precision grinding wheel, with remarkable effects. Brief Description of the Drawings

[0022] Figure 1 is the external view of the utility model;

[0023] Figure 2 is Figure 1 exploded view of;

[0024] Figure 3 is Figure 2 partial structural schematic diagram at position A in.

[0025] In the figure: motor 1, grinding wheel 2, mounting seat 3, limit ring 4, converging ring 5, connecting rod 6, limit elastic piece 7, annular retaining piece 8, supporting elastic piece 9, inner section of support bolt 10, outer section of support bolt 11, buffer tube 12, spring 13, reduced-diameter tube 14, mounting groove 15, anti-slip pattern 16. Detailed Embodiment

[0026] The following further describes the present utility model in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but does not limit the protection scope of the present utility model thereby. Embodiment

[0027] A centering installation fixture for a precision grinding wheel, as Figure 1 shown, is arranged at the output end of the motor 1 and clamps the grinding wheel 2, including a mounting seat 3. The front end of the mounting seat 3 is set as a flared opening, and an outer converging component is connected at the edge. An inner support component is arranged at the center. The grinding wheel 2 is clamped between the outer converging component and the inner support component. The rear end of the mounting seat 3 is fixedly connected to the output shaft of the motor 1. The mounting seat 3, the outer converging component, and the inner support component are all centered on the output shaft of the motor 1.

[0028] In Figure 2 , the outer converging component includes a limit ring 4 and a converging ring 5. The limit ring 4 is annular and is located in front of the front edge of the mounting seat 3. Connecting rods 6 are evenly distributed between the limit ring 4 and the front edge of the mounting seat 3. The converging ring 5 is sleeved outside the mounting seat 3, as well as outside the limit ring 4 and the connecting rods 6. A circular retaining piece 8 is arranged at the rear side of the converging ring 5. The inner diameter of the circular retaining piece 8 is smaller than the maximum outer diameter of the mounting seat 3. Anti-slip patterns 16 are arranged on the outer side of the converging ring 5. There is a clearance fit between the outer side of the limit ring 4 and the outer side of the connecting rods 6 and the inner side of the converging ring 5. External threads are arranged on the outer side of the limit ring 4 and the outer side of the connecting rods 6, and meshing internal threads are arranged on the inner side of the converging ring 5.

[0029] There is a gap between adjacent connecting rods 6, and a limiting elastic sheet 7 is arranged in the gap. As Figure 3 shown, one end of the limiting elastic sheet 7 is fixed to the front edge of the front end of the mounting seat 3. The middle part of the limiting elastic sheet 7 bends outward. The other end is close to the limiting ring 4 inside the limiting ring 4 and bends outward from the front.

[0030] The inner support assembly includes support elastic sheets 9 arranged in a ring shape. There are 4 support elastic sheets 9. One end of each is fixedly arranged at the center of the mounting seat 3, and the other end bends slightly outward, arranged in a flower shape. A support bolt is arranged inside the support elastic sheets 9. The support bolt includes an inner section 10 and an outer section 11. The inner section 10 is conical and penetrates into the space surrounded by the support elastic sheets 9. There is an internal thread on the inner side of the middle part of the support elastic sheets 9, and the inner section 10 of the support bolt is provided with a matching external thread. A "-" shaped groove is preset at the end of the outer section 11 of the support bolt. A buffer tube 12 is sleeved on the outer section 11 of the support bolt. One end of the buffer tube 12 near the end of the outer section 11 of the support bolt is provided with an outward curling edge. A spring 13 is sleeved between the curling edge and the inner side of the end of the outer section 11 of the support bolt. The two ends of the spring 13 are respectively fixed to the curling edge and the inner side of the end of the outer section 11 of the support bolt. The outer diameter of the buffer tube 12 is smaller than the inner diameter of the central hole of the grinding wheel 2; A necking tube 14 is sleeved outside the support elastic sheets 9. The outer diameter of the necking tube 14 is larger than the inner diameter of the central hole of the grinding wheel 2. An installation groove 15 for accommodating the necking tube 14 is opened at the center of the mounting seat 3. The end of the support elastic sheets 9 is fixed in the installation groove 15. Embodiment

[0031] A centering installation fixture for a precision grinding wheel, as Figure 1 shown, is arranged at the output end of the motor 1 and clamps the grinding wheel 2. It includes a mounting seat 3. The front end of the mounting seat 3 is set as a flared opening, and an outer converging assembly is connected at the edge. An inner support assembly is arranged at the center. The grinding wheel 2 is clamped between the outer converging assembly and the inner support assembly. The rear end of the mounting seat 3 is fixedly connected to the output shaft of the motor 1. The mounting seat 3, the outer converging assembly, and the inner support assembly are all centered on the output shaft of the motor 1.

[0032] The inner support assembly includes support elastic sheets 9. Different from Embodiment 1, the support elastic sheets 9 include an inner section and an outer section. The outer section unfolds into a flower shape, including at least three pieces, bending slightly outward. The inner section is an integral tubular structure. At the connection between the outer section and the inner section, and the inner section has an internal thread. The support bolt includes an inner section 10 and an outer section 11. The inner section 10 of the support bolt is conical and penetrates into the support elastic sheets 9. The inner section 10 of the support bolt is provided with an external thread.

[0033] The utility model is applied to the self-centering clamping of precision grinding wheels. When the mold needs to replace or install the grinding wheel, taking embodiment 1 as an example, the shrinking tube 14 is pulled outward to make the supporting spring piece 9 shrink and penetrate into the center hole of the grinding wheel 2, and the grinding wheel 2 is pushed continuously to make it fall into the mounting seat 3. At this time, the limiting ring 4 of the outer shrinking assembly is sleeved on the outside of the grinding wheel 2, and the limiting spring piece 7 contacts the outer side of the grinding wheel 2. As the grinding wheel 2 moves, the shrinking tube 14 is also sent into the mounting groove 15 in the center of the mounting seat 3; the shrinking ring 5 is screwed inward in the direction of the limiting ring 4, and the front end of the shrinking ring 5 compresses the limiting ring 4. The bent part in the middle of the positioning spring piece 7 is pushed forward, so that the front part of the limiting spring piece 7 close to the inner side of the limiting ring 4 moves forward, and its bending and winding part presses the outer side surface of the grinding wheel 2; take out the supporting bolt, and insert the supporting bolt together with the buffer tube 12 and the spring 13 into the center hole of the grinding wheel 2, and the inner section 10 of the supporting bolt is inserted into the supporting spring piece 9. Use a screwdriver to make the outer thread of the inner section 10 of the supporting bolt and the inner thread of the supporting spring piece 9 to achieve thread matching until it is tightened. At this time, the spring 13 is compressed to a certain extent, and its accumulated elastic force pushes and squeezes the grinding wheel 2, so that the grinding wheel 2 remains stably installed.

[0034] In summary, combined with the above structure and use process, it can be found that the utility model has a novel concept and ingenious design, and effectively realizes the self-centering installation and stable clamping of the precision grinding wheel, with remarkable effect.

Claims

1. A centering and mounting fixture for a precision grinding wheel, which is arranged at the output end of a motor and clamps the grinding wheel, and is characterized in that: It includes a mounting seat, the front end of which is arranged as a bell mouth, the edge of which is connected to an external convergence component, an internal support component is arranged at the center, the grinding wheel is clamped between the external convergence component and the internal support component, the rear end of the mounting seat is fixedly connected to the motor output shaft, and the mounting seat, the external convergence component and the internal support component all take the motor output shaft as the center axis.

2. The clamp according to claim 1, characterized in that: The external focusing assembly includes a limiting ring and a focusing ring. The limiting ring is ring-shaped and is located in front of the front end edge of the mounting seat. Connecting rods are evenly distributed between the limiting ring and the front end edge of the mounting seat. Gaps are left between adjacent connecting rods. Limiting spring plates are arranged in the gaps. One end of the limiting spring plate is fixed to the front end edge of the mounting seat, the middle part of the limiting spring plate is bent outward, and the other end is close to the limiting ring on the inner side of the limiting ring and is bent outward from the front. The focusing ring is arranged outside the mounting seat, as well as outside the limiting ring and the connecting rod.

3. The clamp according to claim 2, characterized in that: The outer diameter of the limiting ring is consistent with the outer diameter of the cylinder where the connecting rod is located, and is in clearance fit with the inner side of the tightening ring.

4. The clamp according to claim 3, characterized in that: The outer side of the limit ring and the outer side of the connecting rod are provided with external threads, and the inner side of the tightening ring is provided with internal threads in coordination therewith.

5. The clamp according to claim 2, characterized in that: An annular baffle is arranged on the rear side of the tightening ring, and the inner diameter of the annular baffle is smaller than the maximum outer diameter of the mounting seat.

6. The clamp according to claim 2, characterized in that: The outer side of the tightening ring is provided with anti-slip grooves.

7. The clamp according to claim 1, characterized in that: The inner support assembly includes support springs arranged in a ring shape, there are at least three support springs, one end of which is fixedly set at the center of the mounting seat, and the other end is slightly bent outward, arranged in a flower shape. A support bolt is set on the inner side of the support spring, and the support bolt includes an inner section and an outer section. The inner section is conical and penetrates into the space surrounded by the support springs.

8. The clamp according to claim 7, characterized in that: The inner side of the middle part of the supporting spring piece is provided with an internal thread, the inner section of the supporting bolt is provided with a matching external thread, and the end of the outer section of the supporting bolt is preset with an "I"-shaped or "X"-shaped groove.

9. The clamp according to claim 7, characterized in that: The outer section of the support bolt is sleeved with a buffer tube, and one end of the buffer tube close to the outer section end of the support bolt is provided with an outward curled edge, and a spring is sleeved between the curled edge and the end of the support bolt, and the two ends of the spring are respectively fixed to the curled edge and the inner side of the outer section end of the support bolt, and the outer diameter of the buffer tube is smaller than the inner diameter of the center hole of the grinding wheel.

10. The clamp according to claim 7, characterized in that: The outer sleeve of the supporting spring piece is provided with a shrinking tube, the outer diameter of the shrinking tube is larger than the inner diameter of the center hole of the grinding wheel, and the center of the mounting seat is provided with a mounting groove for accommodating the shrinking tube, and the end of the supporting spring piece is fixed in the mounting groove.

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