Lead screw external thread machining center bracket

Abstract

The utility model relates to a lead screw external thread machining center bracket, and relates to the technical field of lead screw machining, the lead screw external thread machining center bracket comprises a base and a supporting block arranged on the base, the top end of the supporting block is provided with a driving groove, the bottom wall of the driving groove is fixedly provided with a positioning cylinder, the positioning cylinder is internally provided with an ejector rod in a sliding mode, and the ejector rod is arranged on the base. The ejector rod is matched with the positioning cylinder, a set of arc-shaped clamping jaws are symmetrically and rotationally arranged on the inner wall of the driving groove, and the ejector rod is located between the two arc-shaped clamping jaws. A sliding assembly is arranged on the base and used for driving the ejector rod to slide in the positioning cylinder in the vertical direction. And abutting blocks are symmetrically and integrally arranged on the side wall of the ejector rod, guide faces are obliquely arranged on the surfaces of the abutting blocks, and the guide faces can abut against the end walls of the arc-shaped clamping jaws. The lead screw clamping and supporting device has the advantages that lead screws with different diameters can be conveniently and rapidly clamped and supported, the operation difficulty is reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of lead screw processing, and in particular to a support bracket for a lead screw external thread machining center. Background Technology

[0002] Currently, a lead screw is a product with threads on its surface used to convert rotary motion into linear motion, or vice versa. When machining the threads on the lead screw surface, a bracket is needed to clamp and support the lead screw.

[0003] A related technology designs a bracket comprising a base and a support assembly mounted on the base. The support assembly includes a lower adjusting rod, a middle adjusting rod, and an upper adjusting rod. An upper clamping jaw and a lower clamping jaw are rotatably mounted on the base. The lower, middle, and upper adjusting rods are all threadedly connected to the base. The end of the upper adjusting rod abuts against the upper clamping jaw, and the end of the lower clamping jaw abuts against the lower clamping jaw. During operation, the clamping force and clamping diameter of the clamping jaws are adjusted by adjusting the lower, middle, and upper adjusting rods respectively.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: when processing lead screws of different diameters, it is necessary to adjust the lower adjusting rod, the middle adjusting rod and the upper adjusting rod separately to control the action of the gripper, which is cumbersome and affects the processing efficiency. Utility Model Content

[0005] To facilitate quick clamping and support of lead screws of different diameters, reduce operational difficulty, and improve processing efficiency, this application provides a lead screw external thread machining center bracket.

[0006] The technical solution adopted in this application for a lead screw external thread machining center bracket is as follows:

[0007] A support bracket for a lead screw external thread machining center includes a base and a support block mounted on the base. The top of the support block has a drive groove, and a positioning cylinder is fixedly mounted on the bottom wall of the drive groove. A push rod is slidably mounted inside the positioning cylinder, and the push rod is adapted to the positioning cylinder. A set of arc-shaped grippers are symmetrically rotatably mounted on the inner wall of the drive groove, and the push rod is located between two arc-shaped grippers. A sliding assembly is mounted on the base to drive the push rod to slide vertically within the positioning cylinder. Symmetrically integrally mounted abutment blocks are provided on the side walls of the push rod, and the surface of the abutment blocks is inclined with a guide surface that abuts against the end walls of the arc-shaped grippers.

[0008] Preferably, the side wall of the push rod is provided with a limiting block, and the inner wall of the positioning cylinder is provided with a limiting groove. The limiting block is slidably disposed in the limiting groove. The sliding assembly includes a screw, a transmission bevel gear, a driving bevel gear, and a handle. The screw is rotatably disposed on the bottom wall of the drive groove. The push rod and the screw are threadedly connected and coaxially disposed. The transmission bevel gear and the driving bevel gear are rotatably disposed in the support block and mesh with each other. The transmission bevel gear is fixedly disposed on the outer wall of the screw. The handle is connected to the driving bevel gear and passes through the support block.

[0009] Preferably, a guide roller is rotatably provided at one end of the arc-shaped gripper facing the guide surface.

[0010] Preferably, a torsion spring is provided at the rotatable connection between the arc-shaped gripper and the inner wall of the drive groove, and the torsion spring drives the guide roller to abut against the guide surface.

[0011] Preferably, the bottom end of the support block is symmetrically provided with dovetail blocks, the base is provided with dovetail grooves, the dovetail blocks are slidably disposed in the dovetail grooves, the dovetail blocks and the dovetail grooves are adapted to each other, the side wall of the support block is provided with abutting plates, and the abutting plates are threadedly connected with abutting bolts that can abut against the surface of the base.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] 1. By setting up a base, support block, drive groove, positioning cylinder, push rod, arc-shaped jaw, abutment block, and guide surface, when clamping and supporting different lead screws, it is only necessary to use the sliding component to drive the push rod to rise vertically in the positioning cylinder. The push rod will drive the abutment block to abut against the end wall of the arc-shaped jaw, thereby causing the end wall of the arc-shaped jaw to slide on the guide surface. Due to the inclination of the guide surface, the two arc-shaped jaws are subjected to force and rotate continuously, moving closer to each other. At the same time, the push rod rises continuously, quickly controlling the ends of the push rod and the arc-shaped jaws to move closer to each other and press against the surface of the lead screw. The operation is convenient and quick, reducing the difficulty of operation and improving the processing efficiency.

[0014] 2. By setting guide rollers and torsion springs, when the sliding assembly drives the abutment block on the top rod to abut against the end of the arc-shaped jaw, the guide roller on the end of the arc-shaped jaw abuts against the guide surface. The guide roller rotates and slides on the guide surface. The guide roller reduces the friction between the arc-shaped jaw and the abutment block, which helps to extend the service life of the arc-shaped jaw. The torsion spring drives the bottom end of the arc-shaped jaw to rotate towards the abutment block, thereby causing the torsion spring to drive the guide roller to abut against the guide surface. When the sliding assembly drives the top rod to descend, the torsion spring drives the top ends of the two arc-shaped jaws to move away from each other, making it convenient to remove the processed lead screw from under the bracket.

[0015] 3. By setting dovetail blocks, dovetail grooves, clamping plates, and clamping bolts, the cooperation between the dovetail blocks and dovetail grooves can drive the support block to slide between the support block and the base. Then, by rotating the clamping bolts and using the clamping bolts to abut against the surface of the base, the position of the support block is fixed. This makes it easy to adjust the position of the support block on the base to meet different production and processing needs and improve the applicability of the bracket. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a lead screw external thread machining center bracket provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 2. Support block; 21. Drive groove; 3. Positioning cylinder; 31. Top rod; 32. Arc-shaped gripper; 4. Sliding assembly; 41. Screw; 42. Transmission bevel gear; 43. Drive bevel gear; 44. Handle; 5. Abutment block; 51. Guide surface; 6. Limiting block; 61. Limiting groove; 7. Guide roller; 8. Dovetail block; 81. Dovetail groove; 9. Clamping plate; 91. Clamping bolt; 10. Torsion spring. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0019] This application discloses a bracket for a lead screw external thread machining center. (Refer to...) Figure 1 It includes a base 1 and a support block 2 mounted on the base 1. The support block 2 is slidably mounted on the base 1 so that it can support the lead screw at different positions. A drive groove 21 is provided at the top of the support block 2, and a positioning cylinder 3 is fixedly mounted on the bottom wall of the drive groove 21. The length direction of the positioning cylinder 3 is along the height direction of the support block 2. A push rod 31 is slidably mounted inside the positioning cylinder 3. The push rod 31 and the positioning cylinder 3 are mutually adapted. A sliding assembly 4 is provided on the base 1 to drive the push rod 31 to slide vertically inside the positioning cylinder 3.

[0020] Reference Figure 1A set of arc-shaped grippers 32 are symmetrically rotatably arranged on the inner wall of the drive groove 21. The push rod 31 is located between two arc-shaped grippers 32, which are symmetrically arranged on both sides of the push rod 31. The top end of the push rod 31 supports the bottom end of the lead screw, and the arc-shaped grippers 32 clamp the lead screw from both sides, thus supporting and fixing the lead screw to the support block 2. Both the top ends of the arc-shaped grippers 32 and the push rod 31 are rotatably equipped with round rollers to facilitate the rotation of the lead screw. The side wall of the push rod 31 is symmetrically and integrally provided with abutment blocks 5. The surface of the abutment blocks 5 is inclined and has guide surfaces 51, which can abut against the end walls of the arc-shaped grippers 32. When clamping and supporting different lead screws, simply use the sliding component 4 to drive the top rod 31 to rise vertically in the positioning cylinder 3. The top rod 31 will drive the abutment block 5 to abut against the end wall of the arc-shaped claw 32, thereby causing the end wall of the arc-shaped claw 32 to slide on the guide surface 51. Due to the inclination of the guide surface 51, the two arc-shaped claws 32 are subjected to force and rotate continuously, moving closer to each other. At the same time, the top rod 31 rises continuously, quickly controlling the ends of the top rod 31 and the arc-shaped claw 32 to move closer to each other and press against the surface of the lead screw.

[0021] Reference Figure 1 The push rod 31 has a limit block 6 on its side wall, and a limit groove 61 is formed on the inner wall of the positioning cylinder 3. The limit block 6 is slidably disposed in the limit groove 61, and the limit block 6 and the limit groove 61 are mutually adapted. When the push rod 31 slides in the positioning cylinder 3, the limit block 6 slides in the limit groove 61. The sliding assembly 4 includes a screw 41, a transmission bevel gear 42, a driving bevel gear 43, and a handle 44. The screw 41 is rotatably disposed on the bottom wall of the drive groove 21 and is located in the positioning cylinder 3. The push rod 31 and the screw 41 are threadedly connected and coaxially disposed. The transmission bevel gear 42 and the driving bevel gear 43 are rotatably disposed in the support block 2 and mesh with each other. The transmission bevel gear 42 is fixedly disposed on the outer wall of the screw 41 and is coaxially disposed. The handle 44 is connected to the driving bevel gear 43 and passes through the support block 2. When it is necessary to operate the arc-shaped gripper 32 and the push rod 31 to come close to each other to clamp and tighten the screw, turn the handle 44 to drive the driving bevel gear 43 to rotate. The driving bevel gear 43 abuts against the driven bevel gear, driving the driven bevel gear and the screw 41 to rotate. At this time, the limiting block 6 and the limiting groove 61 guide the push rod 31, so that the push rod 31 slides vertically on the screw 41. After the push rod 31 slides, it drives the abutment block 5 to abut against the arc-shaped gripper 32, making the control convenient and quick.

[0022] Reference Figure 1A guide roller 7 is rotatably mounted on one end of the arc-shaped gripper 32 facing the guide surface 51. The length of the guide roller 7 is along the width of the arc-shaped gripper 32. When the sliding assembly 4 drives the abutment block 5 on the top rod 31 to abut against the end of the arc-shaped gripper 32, the guide roller 7 on the end of the arc-shaped gripper 32 abuts against the guide surface 51. The guide roller 7 rotates and slides on the guide surface 51. The guide roller 7 reduces the friction between the arc-shaped gripper 32 and the abutment block 5, which helps to extend the service life of the arc-shaped gripper 32 and improve control accuracy. A torsion spring 10 is provided at the rotational connection between the arc-shaped gripper 32 and the inner wall of the drive groove 21. The torsion spring 10 drives the bottom end of the arc-shaped gripper 32 to rotate towards the abutment block 5, thereby causing the torsion spring 10 to drive the guide roller 7 to abut against the guide surface 51. When the sliding assembly 4 drives the top rod 31 to descend, the torsion spring 10 drives the top ends of the two arc-shaped grippers 32 to move away from each other, making it easier to remove the processed lead screw from under the bracket.

[0023] Reference Figure 1 The support block 2 has dovetail blocks 8 symmetrically arranged at its bottom end, and a dovetail groove 81 is formed on the base 1. The length direction of the dovetail groove 81 is along the length direction of the base 1. The dovetail blocks 8 are slidably disposed within the dovetail groove 81, and the dovetail blocks 8 and the dovetail groove 81 are mutually adapted. A retaining plate 9 is provided on the side wall of the support block 2, and a retaining bolt 91 is threadedly connected to the retaining plate 9. The cooperation between the dovetail blocks 8 and the dovetail groove 81 can drive the support block 2 to slide between the base 1. Then, by rotating the retaining bolt 91, the retaining bolt 91 abuts against the surface of the base 1, fixing the position of the support block 2. This allows for easy adjustment of the position of the support block 2 on the base 1 to meet different production and processing needs.

[0024] The implementation principle of the lead screw external thread machining center bracket in this application embodiment is as follows: When supporting and machining lead screws of different specifications and sizes, the lead screw is placed on the top rod 31, and then the handle 44 is rotated to drive the driving bevel gear 43 to abut against the driven bevel gear, so that the top rod 31 rises vertically on the lead screw 41. The top rod 31 will drive the abutment block 5 to abut against the end wall of the arc-shaped clamp 32, thereby causing the end wall of the arc-shaped clamp 32 to slide on the guide surface 51. Due to the inclination of the guide surface 51, the two arc-shaped clamps 32 are subjected to force and rotate continuously to move closer to each other. At the same time, the top rod 31 rises continuously, quickly controlling the ends of the top rod 31 and the arc-shaped clamp 32 to move closer to each other and press against the surface of the lead screw. The positioning and fixing of the lead screw can be completed quickly with one hand. The operation is convenient and fast, reduces the difficulty of operation, improves the processing efficiency, and has a wide range of applications and low cost.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support bracket for a lead screw external thread machining center, comprising a base (1) and a support block (2) disposed on the base (1), characterized in that: The top of the support block (2) is provided with a drive groove (21), and a positioning cylinder (3) is fixedly provided on the bottom wall of the drive groove (21). A top rod (31) is slidably provided in the positioning cylinder (3). The top rod (31) and the positioning cylinder (3) are adapted to each other. A set of arc-shaped grippers (32) are symmetrically rotated on the inner wall of the drive groove (21). The top rod (31) is located between the two arc-shaped grippers (32). A sliding assembly (4) is provided on the base (1). The sliding assembly (4) is used to drive the top rod (31) to slide vertically in the positioning cylinder (3). Abutment blocks (5) are symmetrically and integrally provided on the side wall of the top rod (31). A guide surface (51) is inclined on the surface of the abutment block (5). The guide surface (51) can abut against the end wall of the arc-shaped grippers (32).

2. The bracket for a lead screw external thread machining center according to claim 1, characterized in that: The side wall of the top rod (31) is provided with a limiting block (6), and the inner wall of the positioning cylinder (3) is provided with a limiting groove (61). The limiting block (6) is slidably disposed in the limiting groove (61). The sliding assembly (4) includes a screw (41), a transmission bevel gear (42), a driving bevel gear (43), and a handle (44). The screw (41) is rotatably disposed on the bottom wall of the drive groove (21). The top rod (31) and the screw (41) are threadedly connected and coaxially disposed. The transmission bevel gear (42) and the driving bevel gear (43) are rotatably disposed in the support block (2) and mesh with each other. The transmission bevel gear (42) is fixedly disposed on the outer wall of the screw (41). The handle (44) is connected to the driving bevel gear (43) and passes through the support block (2).

3. The bracket for a lead screw external thread machining center according to claim 2, characterized in that: The arc-shaped gripper (32) is rotatably equipped with a guide roller (7) at one end facing the guide surface (51).

4. A bracket for a lead screw external thread machining center according to claim 3, characterized in that: A torsion spring (10) is provided at the rotatable connection between the arc-shaped gripper (32) and the inner wall of the drive groove (21), and the torsion spring (10) drives the guide roller (7) to abut against the guide surface (51).

5. A support bracket for a lead screw external thread machining center according to claim 1, characterized in that: The bottom end of the support block (2) is symmetrically provided with dovetail blocks (8), and the base (1) is provided with dovetail grooves (81). The dovetail blocks (8) are slidably disposed in the dovetail grooves (81). The dovetail blocks (8) and the dovetail grooves (81) are adapted to each other. The side wall of the support block (2) is provided with abutting pieces (9), and the abutting pieces (9) are threaded with abutting bolts (91) that can abut against the surface of the base (1).

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