Grinding wheel dismounting and mounting structure for grinding machine

Abstract

The utility model relates to the field of grinding machines, and provides a grinding wheel dismounting and mounting structure for a grinding machine, which comprises a rotating shaft, a connecting shaft arranged at the outer end of the rotating shaft, a jacking sleeve arranged on the outer side of the circumference of the connecting shaft, an expansion sleeve arranged on the outer side of the circumference of the jacking sleeve, a gasket, a grinding wheel and a pressing pad arranged on the outer side of the expansion sleeve, and a groove arranged on the circumference of the expansion sleeve, the jacking sleeve is installed on the outer side of the circumference of the connecting shaft, the jacking sleeve is jacked tightly, the expansion sleeve deforms and is tightly attached to the inner hole portion of the grinding wheel, the jacking sleeve is tightly attached to the connecting shaft through deformation, and therefore no displacement space exists between the inner hole of the grinding wheel and the connecting shaft, on one hand, the fixing effect is achieved, and on the other hand, the grinding wheel is prevented from being damaged. On the other hand, when the grinding wheel is pushed by radial force, the grinding wheel is prevented from deviating.

Description

Technical Field

[0001] The utility model belongs to the field of grinding machines and relates to a structure for disassembling and assembling a grinding wheel for a grinding machine. Background Art

[0002] A grinding machine is a machine tool that uses a grinding tool to grind the surface of a workpiece. Most grinding machines use a high-speed rotating grinding wheel for grinding, and a few use other grinding tools such as oilstones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machines, abrasive belt grinding machines, grinding machines, and polishing machines.

[0003] The grinding wheel of a grinding machine wears out relatively quickly, so the grinding wheel needs to be replaced frequently. When installing the grinding wheel, the hole of the grinding wheel is aligned with the outer end of the rotating shaft, and the nut is tightened and fixed. Since there is a gap between the hole in the middle of the grinding wheel and the outer end of the rotating shaft, and the diameter difference is between 0.02 mm and 0.03 mm. Although the gap is small, during the working process of the grinding wheel, the radial force will push the grinding wheel, which may cause the grinding wheel to be offset. Content of the Utility Model

[0004] The purpose of the utility model is to provide a structure for disassembling and assembling a grinding wheel for a grinding machine, which solves the problem that the grinding wheel of the grinding machine wears out relatively quickly, so the grinding wheel needs to be replaced frequently. When installing the grinding wheel, the hole of the grinding wheel is aligned with the outer end of the rotating shaft, and the nut is tightened and fixed. Since there is a gap between the hole in the middle of the grinding wheel and the outer end of the rotating shaft, and the diameter difference is between 0.02 mm and 0.03 mm. Although the gap is small, during the working process of the grinding wheel, the radial force will push the grinding wheel, which may cause the grinding wheel to be offset.

[0005] The technical solution of the utility model is realized as follows: It includes a rotating shaft, a connecting shaft is arranged at the outer end of the rotating shaft, a tightening sleeve is installed on the outer circumference of the connecting shaft, a expanding sleeve is installed on the outer circumference of the tightening sleeve, a gasket, a grinding wheel and a pressing pad are installed outside the expanding sleeve, a groove is arranged at the circumferential part of the expanding sleeve, and a rubber strip is installed in the groove. The connecting shaft is processed by turning work. The expanding sleeve is made of stainless steel material, the gasket is made of copper material, and the pressing pad is made of stainless steel material, and its two side surfaces are ground.

[0006] As a preferred scheme of the utility model, an external thread is arranged at the outer circumferential end of the connecting shaft, a nut is installed outside the external thread, the pitch of the external thread is 1.5 mm, and the outer shape of the nut is hexagonal.

[0007] As a preferred scheme of the utility model, a reference surface is arranged at the outer end of the rotating shaft, and the reference surface is ground, and the roughness value is small.

[0008] As a preferred embodiment of the present utility model, a cylindrical hole is provided inside the tightening sleeve, an outer tapered surface is provided outside the tightening sleeve, a deformation groove is provided at the inner end of the tightening sleeve, a taper is provided inside the cylindrical hole, and the deformation groove is strip-shaped.

[0009] As a preferred embodiment of the present utility model, an inner tapered surface is provided inside the expanding sleeve, and the taper of the inner tapered surface is 1 degree.

[0010] As a preferred embodiment of the present utility model, a threaded hole is provided at the outer end of the nut, two bolts are installed in the threaded hole, the pitch of the threaded hole is 1.5 mm, and the bolts are hardened.

[0011] As a preferred embodiment of the present utility model, the inner end of the bolt abuts against the pressing pad, and the total threaded length of the bolt is greater than the thickness of the nut.

[0012] As a preferred embodiment of the present utility model, an inclined surface is provided at the outer end of the circumference of the grinding wheel, and the taper of the inclined surface is 3 degrees.

[0013] The beneficial effects of the grinding wheel disassembly and assembly structure for a grinding machine of the present utility model: The present utility model installs a tightening sleeve on the outer circumference of the connecting shaft. The tightening sleeve is tightened, causing the expanding sleeve to deform and tightly adhere to the inner hole part of the grinding wheel. The tightening sleeve deforms and tightly adheres to the connecting shaft, so that there is no displacement space between the inner hole of the grinding wheel and the connecting shaft. On the one hand, it plays a fixing role, and on the other hand, when the grinding wheel is pushed by the radial force, the grinding wheel is prevented from being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structure diagram of the embodiment of the present utility model;

[0015] Figure 2 is the structure diagram of the grinding wheel fixing component of the embodiment of the present utility model;

[0016] Figure 3 is the structure diagram of the rotating shaft of the embodiment of the present utility model;

[0017] Figure 4 is the structure diagram of the expanding sleeve of the embodiment of the present utility model;

[0018] Figure 5 is the structure diagram of the tightening sleeve of the embodiment of the present utility model;

[0019] In the figure: 1, rotating shaft; 2, grinding wheel; 3, nut; 4, pressing pad; 5, bolt; 6, gasket; 7, expanding sleeve; 8, tightening sleeve; 9, abutting surface; 10, connecting shaft; 11, external thread; 12, rubber strip; 13, inner tapered surface; 14, cylindrical hole; 15, outer tapered surface; 16, deformation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As shown Figures 1 to 5 in the figure, the utility model discloses a structure for disassembling and assembling a grinding wheel for a grinding machine. The adopted technical solution is that it includes a rotating shaft 1. A connecting shaft 10 is arranged at the outer end of the rotating shaft 1. A tightening sleeve 8 is installed on the outer circumference of the connecting shaft 10. A expanding sleeve 7 is installed on the outer circumference of the tightening sleeve 8. A gasket 6, a grinding wheel 2 and a pressing pad 4 are installed outside the expanding sleeve 7. A groove is arranged at the circumferential part of the expanding sleeve 7, and a rubber strip 12 is installed in the groove. In the utility model, a tightening sleeve 8 is installed on the outer circumference of the connecting shaft 10. The tightening sleeve 8 is tightened, so that the expanding sleeve 7 deforms and clings to the inner hole part of the grinding wheel 2. The tightening sleeve 8 deforms and clings to the connecting shaft 10, so that there is no displacement space between the inner hole of the grinding wheel 2 and the connecting shaft 10. On the one hand, it plays a fixing role. On the other hand, when the grinding wheel 2 is pushed by a radial force, the grinding wheel is prevented from being offset.

[0021] An external thread 11 is arranged at the outer end of the circumferential part of the connecting shaft 10. A nut 3 is installed outside the external thread 11. The external thread 11 is used to connect the nut 3 to realize the tightening effect of the nut 3 on the tightening sleeve 3.

[0022] A contact surface 9 is arranged at the outer end of the rotating shaft 1. The contact surface 9 is used to cling to the gasket 6 to position the side of the grinding wheel 2.

[0023] A cylindrical hole 14 is arranged inside the tightening sleeve 8. An external conical surface 15 is arranged outside the tightening sleeve 8. A deformation groove 16 is arranged at the inner end of the tightening sleeve 8. The cylindrical hole 14 is used for the connecting shaft 10 to pass through. The external conical surface 15 is used to cling to the internal conical surface 13. The deformation groove 16 deforms to make the tightening sleeve 8 cling to the connecting shaft 10.

[0024] An internal conical surface 13 is arranged inside the expanding sleeve 7. The internal conical surface 13 contacts with the external conical surface 15 to make the expanding sleeve 7 deform and cling to the inner hole of the grinding wheel 2.

[0025] A threaded hole is arranged at the outer end of the nut 3. Two bolts 5 are installed in the threaded hole. The threaded hole is used to fix the thread 5. The bolt 5 is used to tightly press the side of the grinding wheel 2 to realize the secondary fixation of the grinding wheel 2.

[0026] The inner end of the bolt 5 tightly presses against the pressing pad 4. The inner end of the bolt 5 clings to the pressing pad 4 to tightly press the side of the grinding wheel 2.

[0027] An inclined surface is arranged at the outer end of the circumference of the grinding wheel 2. The basic function of the inclined surface of the grinding wheel 2 is to avoid the fatigue damage caused by the repeated use of the grinding wheel, improve the service life of the grinding wheel. In addition, the inclined surface of the grinding wheel 2 can also better control the grinding quality and efficiency in the processing process.

[0028] The working principle of the grinding wheel disassembly and assembly structure for this grinding machine: When a grinding wheel disassembly and assembly structure for a grinding machine is in use, first install the gasket 6 on the outside of the connecting shaft 10, make the gasket 6 tightly fit with the abutting surface 9, install the expansion sleeve 7 on the connecting shaft 10, then install the tightening sleeve 8 on the outside of the connecting shaft 10 and the inside of the expansion sleeve 7, the inner conical surface 13 contacts the outer conical surface 15, then install the grinding wheel 2 on the outside of the expansion sleeve 7, install the pressing gasket 4 at the outer end of the grinding wheel 2, then connect the nut 3 to the external thread 11, tighten the nut 3, push the tightening sleeve 8, the deformation groove 16 deforms, the tightening sleeve 8 tightly fits with the connecting shaft 10, the inner conical surface 13 and the outer conical surface 15 are extruded, so that the expansion sleeve 7 and the rubber strip 12 deform and tightly fit with the inner hole of the grinding wheel 2, and finally two bolts 5 are installed in the threaded holes at the outer end of the nut 3, the inner ends of the bolts 5 are tightly abutted against the pressing gasket 4 to tightly abut against the side of the grinding wheel 2, and the installation of the grinding wheel 2 is completed.

[0029] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention, and modifications or deformations that do not involve creative labor are still within the protection scope of the present invention.

Claims

1. A grinding wheel disassembly and assembly structure for a grinding machine, characterized in that: The invention comprises a rotating shaft (1), wherein a connecting shaft (10) is arranged at the outer end of the rotating shaft (1), a tightening sleeve (8) is installed on the outer circumference of the connecting shaft (10), an expansion sleeve (7) is installed on the outer circumference of the tightening sleeve (8), a gasket (6), a grinding wheel (2) and a pressing pad (4) are installed on the outer side of the expansion sleeve (7), a groove is arranged on the circumference of the expansion sleeve (7), and a rubber strip (12) is installed in the groove.

2. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 1, characterized in that: An external thread (11) is provided at the circumferential outer end of the connecting shaft (10), and a nut (3) is installed outside the external thread (11).

3. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 1, characterized in that: The outer end of the rotating shaft (1) is provided with a resting surface (9).

4. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 1, characterized in that: The inner side of the top tightening sleeve (8) is provided with a cylindrical hole (14), the outer side of the top tightening sleeve (8) is provided with an outer conical surface (15), and the inner end of the top tightening sleeve (8) is provided with a deformation groove (16).

5. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 1, characterized in that: An inner conical surface (13) is provided on the inner side of the expansion sleeve (7).

6. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 2, characterized in that: The outer end of the nut (3) is provided with a threaded hole, and two bolts (5) are installed in the threaded hole.

7. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 6, characterized in that: The inner end of the bolt (5) is pressed against the pressure pad (4).

8. The grinding wheel disassembly and assembly structure for a grinding machine according to claim 1, characterized in that: The outer end of the circumference of the grinding wheel (2) is provided with an inclined surface.

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