A mandrel shaft end machining clamping apparatus

Abstract

The utility model relates to a kind of mandrel shaft end processing clamping equipment, including bottom plate, clamping seat is fixedly arranged on bottom plate, the blind hole for placing mandrel is set on the upper surface of clamping seat, the side surface of clamping seat is set with through hole, the through hole of horizontal setting intersects with the blind hole of vertical setting, left clamping block and right clamping block are respectively slidably inserted in through hole, the inside of left clamping block is provided with arc left clamping surface, the inside of right clamping block is provided with arc right clamping surface, when mandrel clamping, the left clamping surface and right clamping surface are set on the outer surface of mandrel and collide, due to the cooperation of left clamping block and right clamping block, collide on the outer surface of mandrel, mandrel is clamped in blind hole, the other end of mandrel is set on the upper end of clamping seat and protrudes, processing is facilitated, the device is suitable for industrial production, and has very strong practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of shaft tooling fixtures, and particularly relates to a mandrel end processing and clamping device. Background Technology

[0002] A patent titled "A Fixture for Shaft-Type Workpieces" (application number CN202421836765.4) is disclosed in the existing Chinese patent database. This fixture includes a fixed block, with a support block on its lower side for supporting the shaft-type workpiece. The fixed block has several mating holes and several clamping holes for positioning the shaft-type workpiece. The clamping holes correspond one-to-one with the mating holes and are interconnected. An elastic portion is provided between the clamping holes and the mating holes. One end of the elastic portion is a fixed end and fixed to the fixed block, while the other end is a movable end. The communication gap between the clamping holes and the mating holes is located at the movable end. The elastic portion is arc-shaped and extends along the circumference of the clamping holes. This invention has the advantages of easy clamping and improved production efficiency.

[0003] In existing technologies, one end of the mandrel needs to be fixed during surface processing. The existing fixing fixtures are cumbersome to assemble and disassemble. This paper aims to propose a mandrel end processing clamping device that can quickly complete the clamping and loosening of the mandrel, thereby improving the clamping speed of the mandrel. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to quickly complete the clamping and fixing of the mandrel. In order to improve its shortcomings, this utility model provides a mandrel end processing and clamping device.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A mandrel end processing clamping device includes a base plate, on which a clamping seat is fixedly mounted. The upper surface of the clamping seat has a blind hole for placing the mandrel, and the side of the clamping seat has a through hole. The horizontally arranged through hole intersects with the vertically arranged blind hole. A left clamping block and a right clamping block are slidably inserted into the through hole. The inner side of the left clamping block is provided with an arc-shaped left clamping surface, and the inner side of the right clamping block is provided with an arc-shaped right clamping surface. When the mandrel is clamped, the left clamping surface and the right clamping surface abut against the outer surface of the mandrel.

[0007] As a preferred embodiment, the left clamping block has a first stepped hole on its outer end face and a second stepped hole on its inner end face. The first stepped hole and the second stepped hole are connected by a through hole. The right clamping block has a third stepped hole on its inner end face and a threaded hole on its bottom surface. An adjusting bolt is provided between the left and right clamping blocks. The adjusting bolt includes a head, a shaft portion, and a threaded connection portion. The head abuts against the bottom surface of the first stepped hole. The shaft portion passes through the through hole, the second stepped hole, and the third stepped hole in sequence. The shoulder of the shaft portion abuts against the bottom surface of the third stepped hole. The threaded connection portion is screwed into the threaded hole.

[0008] As a preferred embodiment, a compression spring is sleeved on the optical axis portion located between the second and third stepped holes, with one end of the compression spring abutting against the bottom surface of the second stepped hole and the other end abutting against the bottom surface of the third stepped hole.

[0009] As a preferred embodiment, the surfaces of the left clamping block and the right clamping block are provided with waist-shaped grooves, the length direction of the waist-shaped grooves is arranged along the axial direction of the through hole, the surface of the clamping seat is screwed with a limiting bolt, the free end of the limiting bolt extends into a limiting part, the limiting part is located in the waist-shaped groove, and the width of the limiting part is the same as the width of the waist-shaped groove.

[0010] As a preferred embodiment, the clamping seat has connecting holes at its four corners, and the clamping seat is connected to the base plate through locking bolts that pass through the connecting holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Due to the matching arrangement of the left and right clamping blocks, they abut against the outer surface of the mandrel, clamping the mandrel in the blind hole. The other end of the mandrel protrudes from the upper end of the clamping seat, which facilitates processing.

[0013] 2. Due to the compression spring, the left and right clamping blocks form a floating clamping force on the spindle, ensuring that the clamping surfaces of the left and right clamping blocks are always coaxial with the surface of the spindle.

[0014] 3. Due to the matching of the limiting bolt and the waist-shaped groove, the rotation of the left and right clamping blocks is restricted, and the left and right clamping blocks are prevented from falling out of the through hole during movement. This device is suitable for industrial production and has strong practicality. Attached Figure Description

[0015] Figure 1 This is a top view of the internal structure of this utility model.

[0016] In the diagram: 1. Base plate, 2. Clamping seat, 3. Blind hole, 4. Through hole, 5. Left clamping block, 6. Right clamping block, 7. Left clamping surface, 8. Right clamping surface, 9. First step hole, 10. Second step hole, 11. Through hole, 12. Third step hole, 13. Threaded hole, 14. Adjusting bolt, 1401. Head, 1402. Optical shaft, 1403. Threaded connection, 15. Compression spring, 16. Waist groove, 17. Limiting bolt, 18. Connecting hole. Detailed Implementation

[0017] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, a mandrel end processing clamping device includes a base plate 1, a clamping seat 2 fixedly mounted on the base plate 1, a blind hole 3 for placing the mandrel on the upper surface of the clamping seat 2, and a through hole 4 on the side of the clamping seat 2. The horizontally arranged through hole 4 intersects with the vertically arranged blind hole 3. A left clamping block 5 and a right clamping block 6 are slidably inserted into the through hole 4, respectively. The inner side of the left clamping block 5 is provided with an arc-shaped left clamping surface 7, and the inner side of the right clamping block 6 is provided with an arc-shaped right clamping surface 8. When the mandrel is clamped, the left clamping surface 7 and the right clamping surface 8 abut against the outer surface of the mandrel. The left clamping block 5 has a first stepped hole 9 on its outer end face and a second stepped hole 10 on its inner end face. The first stepped hole 9 and the second stepped hole 10 are connected by a through hole 11. The right clamping block 6 has a third stepped hole 12 on its inner end face and a threaded hole 13 on the bottom surface of the third stepped hole 12. An adjusting bolt 14 is provided between the left clamping block 5 and the right clamping block 6. The adjusting bolt 14 includes a head 1401, a shaft part 1402, and a threaded connection part 1403. The head 1401 abuts against the bottom surface of the first stepped hole 9. The shaft part 1402 is provided to pass through the through hole 11, the second stepped hole 10, and the third stepped hole 12 in sequence. The shoulder of the shaft part 1402 abuts against the bottom surface of the third stepped hole 12. The threaded connection part 1403 is screwed into the threaded hole 13. A compression spring 15 is sleeved on the optical shaft portion 1402 located between the second step hole 10 and the third step hole 12. One end of the compression spring 15 abuts against the bottom surface of the second step hole 10, and the other end abuts against the bottom surface of the third step hole 12. The surfaces of the left clamping block 5 and the right clamping block 6 are provided with waist-shaped grooves 16. The length direction of the waist-shaped grooves 16 is arranged along the axial direction of the through hole 4. A limiting bolt 17 is screwed onto the surface of the clamping seat 2. The free end of the limiting bolt 17 extends into a limiting portion, which is located within the waist-shaped groove 16. The width of the limiting portion is the same as the width of the waist-shaped groove 16. Connecting holes 18 are provided at the four corners of the clamping seat 2. The clamping seat 2 is connected to the base plate 1 via locking bolts passing through the connecting holes 18.

[0019] When this utility model is in operation, the operator places the mandrel to be processed into the blind hole 3 and rotates the adjusting bolt 14 so that the threaded connection part 1403 of the adjusting bolt 14 is screwed into the threaded hole 13. During this process, the adjusting bolt 14 moves inward continuously, while pressing the left clamping block 5 to move inward until the left clamping surface 7 is in contact with the outer surface of the mandrel. At this time, if the adjusting bolt 14 is rotated again, the right clamping block 6 will move inward until the right clamping surface 8 is in contact with the outer surface of the mandrel. The compression spring 15 causes the left clamping block 5 and the right clamping block 6 to form a floating clamp for the mandrel. Then, the mandrel end protruding from the surface of the clamping seat 2 is processed.

[0020] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A mandrel end machining and clamping device, characterized in that: It includes a base plate (1), on which a clamping seat (2) is fixedly installed. The upper surface of the clamping seat (2) is provided with a blind hole (3) for placing the mandrel. The side of the clamping seat (2) is provided with a through hole (4). The horizontally arranged through hole (4) intersects with the vertically arranged blind hole (3). A left clamping block (5) and a right clamping block (6) are slidably inserted into the through hole (4). The inner side of the left clamping block (5) is provided with an arc-shaped left clamping surface (7), and the inner side of the right clamping block (6) is provided with an arc-shaped right clamping surface (8). When the mandrel is clamped, the left clamping surface (7) and the right clamping surface (8) abut against the outer surface of the mandrel.

2. The mandrel end machining and clamping device according to claim 1, characterized in that: The left clamping block (5) has a first stepped hole (9) on its outer end face and a second stepped hole (10) on its inner end face. The first stepped hole (9) and the second stepped hole (10) are connected by a through hole (11). The right clamping block (6) has a third stepped hole (12) on its inner end face and a threaded hole (13) on its bottom surface. An adjusting bolt (14) is provided between the left clamping block (5) and the right clamping block (6). The adjusting bolt (14) includes... It has a head (1401), an optical axis (1402), and a threaded connection (1403). The head (1401) abuts against the bottom surface of the first stepped hole (9). The optical axis (1402) is arranged to pass through the through hole (11), the second stepped hole (10), and the third stepped hole (12) in sequence. The shoulder of the optical axis (1402) abuts against the bottom surface of the third stepped hole (12). The threaded connection (1403) is screwed into the threaded hole (13).

3. The mandrel end machining and clamping device according to claim 2, characterized in that: A compression spring (15) is sleeved on the optical axis portion (1402) located between the second step hole (10) and the third step hole (12). One end of the compression spring (15) abuts against the bottom surface of the second step hole (10), and the other end abuts against the bottom surface of the third step hole (12).

4. The mandrel end machining and clamping device according to claim 3, characterized in that: The left clamping block (5) and the right clamping block (6) have waist-shaped grooves (16) on their surfaces. The length direction of the waist-shaped grooves (16) is arranged along the axial direction of the through hole (4). The surface of the clamping seat (2) is screwed with a limiting bolt (17). The free end of the limiting bolt (17) extends into a limiting part. The limiting part is located in the waist-shaped groove (16). The width of the limiting part is the same as the width of the waist-shaped groove (16).

5. A mandrel end machining and clamping device according to any one of claims 1-4, characterized in that: The clamping seat (2) has connection holes (18) at its four corners, and the clamping seat (2) is connected to the base plate (1) by locking bolts that pass through the connection holes (18).

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