Hand-operated round part clamping jig for grinding machine

Abstract

The utility model discloses a kind of grinding machine hand round part clamp jigs, it is related to grinding machine clamp design field, including magnetic suction base and hand clamp;The upper side of magnetic suction base is integrally formed with positioning ring, at least three rolling bearings are provided in positioning ring, at least three screws are rotatably matched and installed on the outer periphery of positioning ring, and the screw is used to adjust the eccentric position of rolling bearing in positioning ring, and the inner ring between at least three rolling bearings is clamped with circular part;Hand clamp includes locating block and hand lever, and locating block is formed with perforation, locating block is screwedly matched and installed with locking bolt at lower end, the upper end of locking bolt extends into perforation, and circular part is locked in perforation by locking bolt, and hand lever is integrally formed and arranged at the upper end of locating block;Compared with prior art, the utility model can be suitable for small amount of circular part sample surface polishing processing, can reduce cost, reduce complexity in installation operation process.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine fixture design, and in particular to a hand-cranked circular part clamping fixture for grinding machines. Background Technology

[0002] Grinding machines are machine tools that use abrasive wheels to grind the surface of workpieces. Most grinding machines use high-speed rotating grinding wheels for grinding, while a few use other abrasive wheels and free abrasives such as honing machines, ultra-precision machining tools, belt grinders, lapping machines, and polishing machines.

[0003] When grinding round parts, the common practice is to magnetically mount a punch forming device on the base of the grinding machine and assemble the round part into the punch forming device. During grinding, the punch forming device drives the round part to rotate, thereby achieving the grinding operation on the outer surface of the round part.

[0004] However, in the above solution, the punch forming device is expensive and requires a power supply to drive the circular parts to rotate, making its installation very inconvenient. Using the punch forming device is very inconvenient when grinding a small number of circular part samples. Therefore, it is necessary to design a new hand-cranked friction clamp fixture to drive the circular parts to rotate, in order to solve the technical problems of high cost and inconvenient installation. It can be used for grinding the outer surface of a small number of circular part samples. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0006] A hand-cranked circular part clamping fixture for a grinding machine includes a magnetic base and a hand-cranked clamp; The upper side of the magnetic base is integrally formed with a positioning ring, and at least three rolling bearings are provided inside the positioning ring. At least three screws are rotatably installed on the outer circumference of the positioning ring, and the screws are used to adjust the eccentric position of the rolling bearings inside the positioning ring. A circular part is clamped and installed between the inner rings of the at least three rolling bearings. A positioning rod is fixedly installed on the outer ring of the rolling bearing. The outer ring of the positioning ring is integrally formed with several through holes, and the outer ends of the positioning rods are slidably fitted into the through holes. The hand-cranked clamp includes a positioning block and a hand crank. The positioning block has a through hole, and a locking bolt is screwed onto the lower end of the positioning block. The upper end of the locking bolt extends into the through hole, and the round part is locked in the through hole by the locking bolt. The hand crank is integrally formed and set on the upper end of the positioning block.

[0007] Furthermore: a telescopic rod is fixedly installed on the outer ring of the rolling bearing, and the outer end of the telescopic rod is formed with a threaded hole, and the inner end of the screw is screwed into the threaded hole.

[0008] Furthermore, the telescopic rod is fixed in a direction perpendicular to the outer ring surface of the rolling bearing.

[0009] Furthermore, the positioning rod and the telescopic rod are arranged parallel to each other.

[0010] Furthermore, the outer end of the screw is formed with a nut, and an anti-slip sleeve is fixedly installed on the outside of the nut.

[0011] Furthermore, the outer end of the nut is formed with an internal hexagonal groove.

[0012] Furthermore, the positioning ring has three screws on its outer circumference, and the included angle between two adjacent screws is 120°.

[0013] Furthermore: a sleeve is rotatably fitted on the outer side of the hand crank, a limit ring is formed at the outer end of the hand crank, the sleeve is fitted between the positioning block and the limit ring with clearance, and the diameter of the limit ring is larger than the inner diameter of the sleeve.

[0014] Furthermore, a trapezoidal protrusion is integrally formed between the magnetic base and the positioning ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Magnetically install the magnetic base onto the base of the grinding machine. You can choose to further lock it with bolts. Then insert the circular part into the inner ring of at least three rolling bearings. Since the diameter of the inner ring of the rolling bearing is larger than the diameter of the circular part, the circular part is in a loose state at this time and will wobble when it rotates. Therefore, it is necessary to tighten the screws. The screws can adjust the eccentric position of the rolling bearing in the positioning ring. Stable assembly is achieved by pressing the outer surface of the circular part with the inner ring of at least three rolling bearings. After assembly, it will not hinder the rotation of the circular part. 2. Use locking bolts to lock the end of the round part into the through hole of the positioning block, and use a hand crank to drive the entire positioning block to rotate around the axis of the round part; 3. It can be used for grinding the outer surface of small batches of round parts, which can reduce costs and simplify the installation process.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model before the circular part is installed; Figure 2 This is a schematic diagram of the structure of this utility model after the circular part is installed; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of a single rolling bearing of this utility model.

[0019] The following components are shown in the diagram: 1. Magnetic base; 2. Hand-cranked clamp; 21. Positioning block; 22. Hand crank; 3. Positioning ring; 4. Rolling bearing; 5. Screw; 6. Circular part; 7. Positioning rod; 8. Through hole; 9. Through hole; 10. Locking bolt; 11. Telescopic rod; 12. Threaded hole; 13. Nut; 14. Anti-slip sleeve; 15. Socket hexagonal groove; 16. Sleeve; 17. Limiting ring; 18. Trapezoidal protrusion. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1-4 As shown, the present invention provides a hand-cranked circular part clamping fixture for a grinding machine, comprising a magnetic base 1 and a hand-cranked clamp 2; The upper side of the magnetic base 1 is integrally formed with a positioning ring 3. At least three rolling bearings 4 are provided inside the positioning ring 3. At least three screws 5 are rotatably installed on the outer circumference of the positioning ring 3. The screws 5 are used to adjust the eccentric position of the rolling bearings 4 in the positioning ring 3. A circular part 6 is clamped and installed between the inner rings of the at least three rolling bearings 4. A positioning rod 7 is fixedly installed on the outer ring of the rolling bearing 4. The outer ring of the positioning ring 3 is integrally formed with a number of through holes 8. The outer ends of the positioning rod 7 are slidably fitted into the through holes 8. The hand-cranked clamp 2 includes a positioning block 21 and a hand crank 22. A through hole 9 is formed on the positioning block 21. A locking bolt 10 is screwed and installed at the lower end of the positioning block 21. The upper end of the locking bolt 10 extends into the through hole 9. The circular part 6 is locked in the through hole 9 by the locking bolt 10. The hand crank 22 is integrally formed and set at the upper end of the positioning block 21. The principle is as follows: The magnetic base 1 is magnetically installed on the base of the grinding machine, and can be further locked with bolts. Then, the circular part 6 is inserted into the inner ring of at least three rolling bearings 4. Since the diameter of the inner ring of the rolling bearing 4 is larger than the diameter of the circular part 6, the circular part 6 is in a loose state at this time and will wobble when rotated. Therefore, the screw 5 needs to be tightened. The screw 5 can adjust the eccentric position of the rolling bearing 4 in the positioning ring 3. Stable assembly is achieved by pressing the outer surface of the circular part 6 with the inner ring of at least three rolling bearings 4. After assembly, it will not hinder the rotation of the circular part 6. Finally, the locking bolt 10 is used to lock the end of the circular part 6 into the through hole 9 of the positioning block 21. The entire positioning block 21 is driven to rotate around the circular part 6 as the axis by the hand crank 22. It is suitable for grinding the outer surface of a small number of circular part 6 samples, which can reduce costs and reduce the complexity of the installation process.

[0026] Furthermore: a telescopic rod 11 is fixedly installed on the outer ring of the rolling bearing 4, and a threaded hole 12 is formed on the outer end of the telescopic rod 11. The inner end of the screw 5 is screwed and installed in the threaded hole 12. The eccentric position of the rolling bearing 4 in the positioning ring 3 can be adjusted by the screw 5 and the threaded hole 12. By combining the cooperation of at least three rolling bearings 4 with the circular part 6, the stable assembly of the circular part 6 can be achieved.

[0027] Furthermore, the fixed direction of the telescopic rod 11 is perpendicular to the outer ring surface of the rolling bearing 4, which can ensure the stability of the rolling bearing 4 when adjusting its eccentric position within the positioning ring 3.

[0028] Furthermore, the positioning rod 7 and the telescopic rod 11 are arranged parallel to each other, which can ensure that the rolling bearing 4 can make stable eccentric movements.

[0029] Furthermore, at least two of the positioning rods 7 are fixedly installed on the outer ring of the rolling bearing 4, which can further enhance the stability of the rolling bearing 4 when it moves eccentrically.

[0030] Furthermore, the outer end of the screw 5 is formed with a nut 13, and an anti-slip sleeve 14 is fixedly installed on the outer side of the nut 13; this allows the nut 13 to be easily turned to tighten the screw 5.

[0031] Furthermore: the outer end of the nut 13 is formed with an internal hexagonal groove 15; the screw 5 can be locked in the internal hexagonal groove 15 using an external hexagonal screwdriver 5. Attention should be paid to the tightening force, as over-tightening will affect the normal operation of the rolling bearing 4.

[0032] Furthermore, the positioning ring 3 has three screws 5 on its outer periphery, and the included angle between two adjacent screws 5 is 120°; this ensures the stable assembly of the circular part 6 within the positioning ring 3.

[0033] Furthermore: a sleeve 16 is rotatably mounted on the outer side of the hand crank 22, and a limiting ring 17 is formed at the outer end of the hand crank 22. The sleeve 16 is fitted between the positioning block 21 and the limiting ring 17 with a clearance fit, and the diameter of the limiting ring 17 is larger than the inner diameter of the sleeve 16. The sleeve 16 can avoid direct contact and friction with the hand crank 22 when cranking, thereby facilitating the rotation of the circular part 6 by the hand crank 22.

[0034] Furthermore, a trapezoidal protrusion 18 is integrally formed between the magnetic base 1 and the positioning ring 3, which can realize the firm forming and positioning of the positioning ring 3 on the magnetic base 1.

[0035] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A hand-cranked circular part clamping fixture for a grinding machine, characterized in that: Includes a magnetic base and a hand-cranked clamp; The upper side of the magnetic base is integrally formed with a positioning ring, and at least three rolling bearings are provided inside the positioning ring. At least three screws are rotatably installed on the outer circumference of the positioning ring, and the screws are used to adjust the eccentric position of the rolling bearings inside the positioning ring. A circular part is clamped and installed between the inner rings of the at least three rolling bearings. A positioning rod is fixedly installed on the outer ring of the rolling bearing. The outer ring of the positioning ring is integrally formed with several through holes, and the outer ends of the positioning rods are slidably fitted into the through holes. The hand-cranked clamp includes a positioning block and a hand crank. The positioning block has a through hole, and a locking bolt is screwed onto the lower end of the positioning block. The upper end of the locking bolt extends into the through hole, and the round part is locked in the through hole by the locking bolt. The hand crank is integrally formed and set on the upper end of the positioning block.

2. The hand-cranked circular part clamping fixture for a grinding machine according to claim 1, characterized in that: A telescopic rod is fixedly installed on the outer ring of the rolling bearing. The outer end of the telescopic rod is formed with a threaded hole, and the inner end of the screw is screwed into the threaded hole.

3. A hand-cranked circular part clamping fixture for a grinding machine according to claim 2, characterized in that: The telescopic rod is fixed in a direction perpendicular to the outer ring surface of the rolling bearing.

4. A hand-cranked circular part clamping fixture for a grinding machine according to any one of claims 2 or 3, characterized in that: The positioning rod and the telescopic rod are arranged parallel to each other.

5. A hand-cranked circular part clamping fixture for a grinding machine according to claim 4, characterized in that: The positioning rods are provided in at least two and are fixedly installed on the outer ring of the rolling bearing.

6. A hand-cranked circular part clamping fixture for a grinding machine according to claim 1, characterized in that: The screw has a nut formed at its outer end, and an anti-slip sleeve is fixedly installed on the outside of the nut.

7. A hand-cranked circular part clamping fixture for a grinding machine according to claim 6, characterized in that: The outer end of the nut is formed with an internal hexagonal groove.

8. A hand-cranked circular part clamping fixture for a grinding machine according to claim 1, characterized in that: The positioning ring has three screws on its outer circumference, and the included angle between two adjacent screws is 120°.

9. A hand-cranked circular part clamping fixture for a grinding machine according to claim 1, characterized in that: A sleeve is rotatably fitted on the outer side of the hand crank, and a limit ring is formed at the outer end of the hand crank. The sleeve is fitted between the positioning block and the limit ring with a clearance fit, and the diameter of the limit ring is larger than the inner diameter of the sleeve.

10. A hand-cranked circular part clamping fixture for a grinding machine according to claim 1, characterized in that: A trapezoidal protrusion is integrally formed between the magnetic base and the positioning ring.

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