High-speed high-precision grinding machine spindle head

Abstract

The utility model relates to the technical field of grinding tools, in particular to a high-speed high-precision grinding machine spindle head which comprises a spindle head body, a shaft rod and a millstone frame, the shaft rod is arranged at the output end of the spindle head body, and the millstone frame is arranged at one end of the shaft rod. A first screw rod is arranged at the outer end of the shaft rod, a nut is in threaded connection with the outer wall of the first screw rod, the nut is used for limiting and fixing a millstone frame, a second screw rod is in threaded connection with the interior of the first screw rod, two abutting blocks are connected to the outer wall of the shaft rod in an inserted mode, and the other ends of the two abutting blocks extend into the shaft rod; two abutting blocks are arranged in the shaft rod, guide blocks are arranged on the edges of the abutting blocks, reset springs are arranged between the guide blocks and the interior of the shaft rod, a round head is arranged at the inner end of the second screw rod, and the round head is used for pushing the two abutting blocks to move outwards. And the fixing effect of the millstone frame on the shaft rod is further improved, and the mounting firmness of the millstone frame is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding tool technical field, concretely is a high -speed high -precision grinding machine spindle head. BACKGROUND

[0002] ‌Grinding machine spindle head is the core component of grinding machine for supporting and rotating grinding wheel or other grinding tools, it carries out grinding processing to workpiece through high -speed rotation, realizes accurate size and shape processing.

[0003] At present grinding machine spindle head is used to drive grinding disc rotation and polish products, grinding disc is fixed on the main shaft head transmission shaft through the grinding disc holder, the existing grinding disc holder is connected through bolt thread in one end of the main shaft head, grinding disc produces centrifugal force when grinding disc polishes products, if grinding disc long -term polishing work, only rely on bolt fixed, if bolt is aged and broken, affect the fixing of grinding disc, lead to the shaking of grinding disc and affect work. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high -speed high -precision grinding machine spindle head to solve the above -mentioned background art if grinding disc long -term polishing work, only rely on bolt fixed, if bolt is aged and broken, affect the fixing of grinding disc, lead to the shaking of grinding disc and affect work.

[0005] To realize above -mentioned purpose, the utility model provides the following technical scheme: including main shaft head body, axle rod, grinding disc holder, the axle rod sets up on the output of main shaft head body, the grinding disc holder sets up in one end of axle rod, the axle rod outer end is provided with first screw rod, and the first screw rod outer wall is connected with the nut, and the nut is used for limiting fixed grinding disc holder, the first screw rod inside is connected with second screw rod, the axle rod outer wall inserts two resistance blocks, and two resistance blocks other ends extend to the axle rod inside respectively, and the resistance block edge is provided with guide block, and the guide block with between the axle rod inside is provided with reset spring, and the second screw rod inner end is provided with round head, and the round head is used for pushing two resistance blocks and moving outward, and two resistance blocks outer edges are tightly pressed on the inner wall of grinding disc holder.

[0006] Preferably, the contact part of the resistance block and the round head is a trapezoidal edge, and the second screw rod outer end is provided with a rotating hole.

[0007] Preferably, the first screw rod inside is provided with a threaded hole matched with the second screw rod, and the outer wall of the second screw rod is threadedly connected in the threaded hole.

[0008] Preferably, the axle rod inside is provided with two guide grooves matched with the guide block, and one end of the guide block slides in the guide groove.

[0009] Preferably, the two reset springs are located in two guide grooves respectively, one end of the spring is fixedly connected to the guide block, and the other end of the spring is fixedly connected to the inside of the shaft.

[0010] Preferably, a retaining ring is provided on the inner side of the grinding disc frame, and one side of the nut is tightly pressed against the edge of the retaining ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by squeezing the two clamping blocks and moving them outward, the outer edges of the two clamping blocks are pressed tightly against the inner ring of the grinding disc frame, which increases the external force to constrain and fix the grinding disc frame, further improving the fixing effect of the grinding disc frame on the shaft and improving the installation firmness of the grinding disc frame. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a frontal cross-sectional view of the present invention.

[0014] Figure 3 This utility model Figure 2 A magnified schematic diagram of structure A in the diagram.

[0015] In the diagram: 1. Main spindle head body; 2. Shaft; 3. First screw; 4. Second screw; 5. Grinding disc frame; 6. Retaining ring; 7. Nut; 8. Clamping block; 9. Guide block; 10. Return spring; 11. Circular head; 12. Rotating hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0017] Please see Figures 1-3The illustration shows a preferred embodiment of this technical solution: a high-speed, high-precision grinding machine spindle head, including a spindle head body 1, a shaft 2, and a grinding disc frame 5. The shaft 2 is located on the output end of the spindle head body 1, and the grinding disc frame 5 is located on one end of the shaft 2. A first screw 3 is provided at the outer end of the shaft 2, and a nut 7 is threadedly connected to the outer wall of the first screw 3. The nut 7 is used to limit and fix the grinding disc frame 5. A second screw 4 is threadedly connected inside the first screw 3. Two abutting blocks 8 are inserted into the outer wall of the shaft 2. The other ends of the two abutting blocks 8 extend into the shaft 2. A guide block 9 is provided on the edge of the abutting block 8. A return spring 10 is provided between the guide block 9 and the inside of the shaft 2. A circular head 11 is provided at the inner end of the second screw 4. The circular head 11 is used to push the two abutting blocks 8 outward. The outer edges of the two abutting blocks 8 are tightly pressed against the inner wall of the grinding disc frame 5.

[0018] like Figure 1 , 3 As shown, the contact area between the clamping block 8 and the circular head 11 is trapezoidal, and the outer end of the second screw 4 is provided with a rotating hole 12. The contact area between the clamping block 8 and the circular head 11 is trapezoidal, so that the circular head 11 can push the clamping block 8 to move. The rotating hole 12 at the outer end of the second screw 4 is used to insert objects and facilitate the rotation of the second screw 4.

[0019] like Figure 3 As shown, the first screw 3 has a threaded hole inside that matches the second screw 4. The outer wall of the second screw 4 is threaded into the threaded hole. The threaded hole inside the first screw 3 is used for the second screw 4 to be threaded into the first screw 3.

[0020] like Figure 2 , 3 As shown, the shaft 2 has two guide grooves that match the guide block 9. One end of the guide block 9 slides in the guide groove, and the guide groove is used to restrict the movement of the guide block 9.

[0021] like Figure 2 , 3 As shown, the two return springs 10 are located in the two guide grooves respectively. One end of the spring is fixedly connected to the guide block 9, and the other end of the spring is fixedly connected to the inside of the shaft 2.

[0022] like Figure 1 , 2 As shown, a retaining ring 6 is provided on the inner side of the grinding disc frame 5, and one side of the nut 7 is tightly pressed against the edge of the retaining ring 6.

[0023] In this embodiment, after the components are installed, the grinding disc frame 5 is fitted onto the outer wall of the shaft 2. The nut 7 is threaded onto the outer wall of the first screw 3. The nut 7 is tightly fitted to the retaining ring 6 to constrain and fix the grinding disc frame 5 onto the shaft 2. At the same time, the second screw 4 is rotated clockwise, causing the internal thread of the first screw 3 on the outer wall of the second screw 4 to rotate. One end of the second screw 4 moves deeper into the shaft 2. When the circular head 11 at one end of the second screw 4 contacts the trapezoidal edge of the two abutting blocks 8, the two abutting blocks 8 are squeezed and moved outward, so that the outer edges of the two abutting blocks 8 are tightly pressed against the inner ring of the grinding disc frame 5. This adds an external force to constrain and fix the grinding disc frame 5, further improving the fixing effect of the grinding disc frame 5 on the shaft 2 and improving the installation firmness of the grinding disc frame 5.

[0024] When disassembling the grinding disc frame 5, the elasticity of the return spring 10 pushes the two guide blocks 9 together, causing the two abutting blocks 8 to move into the shaft 2, which will not affect the disassembly and installation of the grinding disc frame 5.

[0025] The above description provides a further detailed explanation of the present invention in conjunction with specific embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. A high-speed, high-precision grinding machine spindle head, comprising a spindle head body (1), a shaft (2), and a grinding disc holder (5), wherein the shaft (2) is disposed on the output end of the spindle head body (1), and the grinding disc holder (5) is disposed on one end of the shaft (2); characterized in that: The outer end of the shaft (2) is provided with a first screw (3), and the outer wall of the first screw (3) is threaded with a nut (7), which is used to limit and fix the grinding disc frame (5). The inner thread of the first screw (3) is connected with a second screw (4). Two abutting blocks (8) are inserted into the outer wall of the shaft (2). The other ends of the two abutting blocks (8) extend into the shaft (2). The edge of the abutting block (8) is provided with a guide block (9). A return spring (10) is provided between the guide block (9) and the inside of the shaft (2). The inner end of the second screw (4) is provided with a round head (11), which is used to push the two abutting blocks (8) to move outward. The outer edges of the two abutting blocks (8) are tightly pressed against the inner wall of the grinding disc frame (5).

2. The high-speed, high-precision grinding machine spindle head according to claim 1, characterized in that: The contact area between the clamping block (8) and the circular head (11) is trapezoidal, and the outer end of the second screw (4) is provided with a rotating hole (12).

3. The high-speed, high-precision grinding machine spindle head according to claim 1, characterized in that: The first screw (3) has a threaded hole inside that matches the second screw (4), and the outer wall of the second screw (4) is threaded into the threaded hole.

4. The high-speed, high-precision grinding machine spindle head according to claim 1, characterized in that: The shaft (2) has two guide grooves that match the guide block (9) inside, and one end of the guide block (9) slides in the guide groove.

5. A high-speed, high-precision grinding machine spindle head according to claim 1, characterized in that: The two reset springs (10) are located in two guide grooves respectively. One end of the spring is fixedly connected to the guide block (9), and the other end of the spring is fixedly connected to the inside of the shaft (2).

6. A high-speed, high-precision grinding machine spindle head according to claim 1, characterized in that: A retaining ring (6) is provided on the inner side of the grinding disc frame (5), and one side of the nut (7) is tightly pressed against the edge of the retaining ring (6).

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