Cylindrical turning tool for thin-walled cylinder workpiece

Abstract

The utility model belongs to the field of tool clamps, particularly relates to a cylindrical turning tool for a thin-walled cylinder workpiece, and provides the following scheme aiming at the problems that an existing cylindrical turning tool cannot well adapt to workpieces with different pipe diameters, only the outer side of the workpiece can be clamped, and the workpiece is prone to deformation due to the fact that the interior of the tubular workpiece is hollow. The device comprises a fixed base, a positioning circular ring is fixedly mounted at the top of the fixed base, a plurality of rotating holes are formed in the outer side of the positioning circular ring, an outer groove circular ring is slidably mounted on the inner side of the positioning circular ring, a reset spring is fixedly mounted at the bottom of the outer groove circular ring, and a supporting cylinder is slidably mounted on the inner side of the positioning circular ring; one end of the supporting cylinder is connected with the outer groove circular ring in a clamped mode. The pipe-shaped workpiece limiting device can adapt to pipe-shaped workpieces with different pipe diameters, and the inside and the outside of the pipe-shaped workpieces can be limited at the same time through the arranged mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to an external cylindrical turning tool for a thin-walled cylindrical workpiece. Background Art

[0002] In the field of machining, turning is a common machine frame operation. In the prior art, when turning a rod-shaped part, the length of the rod-shaped part extending out of the lathe three-axis chuck should not be greater than 3 to 5 times the cross-sectional diameter of the rod-shaped part, so as to avoid bending of the rod-shaped part during the outer circle cutting process, thereby causing eccentricity in the outer circle cutting and the scrapping of the entire rod-shaped part. When processing a tubular part, since the inside of the workpiece is a hollow structure, the requirements for workpiece clamping and positioning are higher than those for solid rod-shaped parts. When turning the outer circle of such a workpiece in the prior art, it is often necessary to use the auxiliary support of the lathe top seat, so that one end of the tubular part is clamped and positioned in the lathe three-axis chuck, and the other end of the tubular part is axially supported on the lathe top seat, thereby ensuring that the tubular part does not bend during cutting.

[0003] However, the existing clamps cannot adapt well to workpieces with different diameters when working, and the existing clamps can only clamp the outer side of the workpiece when clamping the tubular workpiece. Since the inside of the tubular workpiece is hollow, the workpiece is prone to deformation. Utility Model Content

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A tool for external cylindrical turning of a thin-walled cylindrical workpiece, comprising a fixed base, a positioning ring fixedly installed on the top of the fixed base, a plurality of rotating holes being provided on the outer side of the positioning ring; an outer groove ring being slidably installed on the inner side of the positioning ring, a reset spring being fixedly installed on the bottom of the outer groove ring, a reset groove being provided on the top of the fixed base, one end of the reset spring being fixedly installed on the bottom inner wall of the reset groove; a supporting cylinder being slidably installed on the inner side of the positioning ring, one end of the supporting cylinder being clamped with the outer groove ring, one end of the supporting cylinder being provided with a receiving hole, a triangular metal block being rotatably installed on the inner wall of the receiving hole.

[0006] Specifically, a rotating column is rotatably installed on the inner wall of one side of the multiple rotating holes, and a limit clamp is fixedly sleeved on the multiple rotating columns. A plurality of control metal blocks are slidably installed in the outer groove of the outer groove ring, and the multiple control metal blocks are connected to the corresponding limit clamps, so that the inclination angle of the limit clamp can be controlled by controlling the movement of the metal block, so as to better limit and fix the tubular workpiece.

[0007] Specifically, a threaded rod is slidably installed on the inner side of the outer groove ring, and a fixed metal block is fixedly installed on the inner wall of one side of the outer groove ring. The fixed metal block is fixedly sleeved on the threaded rod, so that the outer groove ring can be driven to move by the fixed metal block.

[0008] Specifically, a nut sleeve is fixedly installed on the inner wall of the bottom of the reset groove, and the nut sleeve is threadedly connected to the threaded rod to facilitate the movement of the threaded rod.

[0009] Specifically, a rotating hole is opened on the top of the triangular metal block, a threaded rod is rotatably installed in the rotating hole, an external gear is fixedly sleeved on the threaded rod, and an internal gear is fixedly installed on the top of the triangular metal block. The internal gear and the external gear are adapted to each other, so that the external gear can drive the internal gear to rotate, thereby driving the triangular metal block to rotate.

[0010] Specifically, a plurality of limiting sliding grooves are provided on the outer side of the triangular metal block, and a sliding metal block is slidably installed on the inner wall of one side of the plurality of limiting sliding grooves, so that the plurality of sliding metal blocks can be driven to move by the rotation of the triangular metal block.

[0011] Specifically, a plurality of supporting holes are provided on the outer side of the supporting cylinder, and supporting metal rods are slidably installed on the inner sides of the plurality of supporting holes, and the plurality of supporting metal rods are connected to one side of the corresponding sliding metal block; a plurality of arc-shaped metal plates are slidably installed on the top of the outer groove ring, and one side of the plurality of arc-shaped metal plates are connected to the corresponding plurality of supporting metal rods, so that the corresponding arc-shaped metal plates can be moved by the movement of the supporting metal rods.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides an external cylindrical turning tool for thin-walled cylindrical workpieces, which can adapt to pipe-shaped workpieces with different diameters, can effectively fix the workpieces, enable them to be processed better, and increase the adaptability of the device.

[0014] The utility model provides an external cylindrical turning tool for a thin-walled cylindrical workpiece, which can limit the inside and outside of the tubular workpiece at the same time through a set mechanism, thereby preventing the tubular workpiece from being deformed due to uneven internal and external forces, thereby increasing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an external cylindrical turning tool for a thin-walled cylindrical workpiece proposed by the utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the main structure of an external cylindrical turning tool for a thin-walled cylindrical workpiece proposed by the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the side view structure of an external cylindrical turning tool for a thin-walled cylindrical workpiece proposed by the utility model;

[0018] Figure 4 A three-dimensional structural schematic diagram of an outer limit structure of an outer cylindrical turning tool for a thin-walled cylindrical workpiece proposed by the utility model;

[0019] Figure 5 The utility model provides a three-dimensional structural schematic diagram of the inner support structure of the outer cylindrical turning tool for a thin-walled cylindrical workpiece.

[0020] In the figure: 1. fixed base; 2. positioning ring; 3. rotating column; 4. limit clamp; 5. control metal block; 6. outer groove ring; 7. fixed metal block; 8. threaded rod; 9. nut sleeve; 10. reset spring; 11. supporting cylinder; 12. triangular metal block; 13. limit slide groove; 14. sliding metal block; 15. supporting metal rod; 16. arc-shaped metal block; 17. external gear; 18. internal gear. DETAILED DESCRIPTION

[0021] Reference Figure 1-5 A tool for turning the outer circle of a thin-walled cylindrical workpiece comprises a fixed base 1, a positioning ring 2 is fixedly installed on the top of the fixed base 1, and a plurality of rotating holes are opened on the outer side of the positioning ring 2; an outer groove ring 6 is slidably installed on the inner side of the positioning ring 2, and a reset spring 10 is fixedly installed on the bottom of the outer groove ring 6, a reset groove is opened on the top of the fixed base 1, and one end of the reset spring 10 is fixedly installed on the bottom inner wall of the reset groove; a supporting cylinder 11 is slidably installed on the inner side of the positioning ring 2, one end of the supporting cylinder 11 is clamped with the outer groove ring 6, and one end of the supporting cylinder 11 is opened with a receiving hole, and a triangular metal block 12 is rotatably installed on the inner wall of the receiving hole.

[0022] In this embodiment, a rotating column 3 is rotatably installed on the inner wall of one side of the multiple rotating holes, and a limit clamp 4 is fixedly sleeved on the multiple rotating columns 3. A plurality of control metal blocks 5 are slidably installed in the outer groove of the outer groove ring 6, and the plurality of control metal blocks 5 are connected to the corresponding limit clamp 4.

[0023] In this embodiment, a threaded rod 8 is slidably mounted on the inner side of the outer groove ring 6 , and a fixed metal block 7 is fixedly mounted on the inner wall of one side of the outer groove ring 6 . The fixed metal block 7 is fixedly sleeved on the threaded rod 8 .

[0024] In this embodiment, a nut sleeve 9 is fixedly installed on the bottom inner wall of the reset groove, and the nut sleeve 9 is threadedly connected to the threaded rod 8.

[0025] In this embodiment, a rotating hole is opened at the top of the triangular metal block 12, and a threaded rod 8 is rotatably installed in the rotating hole. An external gear 17 is fixedly sleeved on the threaded rod 8, and an internal gear 18 is fixedly installed on the top of the triangular metal block 12, and the internal gear 18 and the external gear 17 are adapted to each other.

[0026] In this embodiment, a plurality of limiting sliding grooves 13 are formed on the outer side of the triangular metal block 12 , and a sliding metal block 14 is slidably mounted on one inner wall of each of the plurality of limiting sliding grooves 13 .

[0027] In this embodiment, a plurality of support holes are opened on the outer side of the support cylinder 11, and support metal rods 15 are slidably installed on the inner sides of the plurality of support holes. The plurality of support metal rods 15 are connected to one side of the corresponding sliding metal block 14, and a plurality of arc-shaped metal plates 16 are slidably installed on the top of the outer groove ring 6, and one side of the plurality of arc-shaped metal plates 16 is connected to the corresponding plurality of support metal rods 15.

[0028] Working principle: When in use, place the tubular workpiece on the supporting cylinder 11, then twist the threaded rod 8, the threaded rod 8 rotates under the influence of the nut sleeve 9 and moves inward, the threaded rod 8 moves inward and drives the fixed metal block 7 fixed thereon to move inward, the fixed metal block 7 moves inward and drives the outer groove ring 6 to move inward, the outer groove ring 6 moves inward and drives multiple control metal blocks 5 to move inward, the movement of multiple control metal blocks 5 drives the corresponding limit clamps 4 to tilt inward, fix the outer side of the tubular workpiece, and at the same time, the threaded rod 8 moves inward and drives the external gear 17 to move inward, the external gear 1 7 moves to the designated position and meshes with the internal gear 18, thereby driving the internal gear 18 to rotate, the rotation of the internal gear 18 drives the multiple triangular metal blocks 12 to rotate, the rotation of the multiple triangular metal blocks 12 drives the corresponding multiple sliding metal blocks 14 to move in the corresponding limiting slide grooves 13, the movement of the multiple sliding metal blocks 14 pushes the corresponding supporting metal rods 15 to slide outwards, the outward sliding of the multiple supporting metal rods 15 drives the corresponding arc-shaped metal blocks 16 to slide outwards and connect with the inner wall of the tubular workpiece, thereby supporting the inner wall of the tubular workpiece to prevent it from being deformed or collapsed inwards due to the clamping of the external limiting mechanism.

[0029] The technical progress achieved by the utility model compared with the prior art is that it can adapt to tubular workpieces of different sizes and diameters, can effectively fix the workpiece so that it can be processed better, and the adaptability of the device is increased. In addition, the inside and outside of the tubular workpiece can be limited at the same time through the set mechanism to prevent the tubular workpiece from being deformed due to uneven internal and external forces, thereby increasing the practicality of the device.

Claims

1. A tool for turning the outer diameter of a thin-walled cylindrical workpiece, characterized in that: include: A fixed base (1), a positioning ring (2) is fixedly installed on the top of the fixed base (1), a plurality of rotating holes are opened on the outer side of the positioning ring (2), a rotating column (3) is rotatably installed on the inner wall of one side of the plurality of rotating holes, a limiting clamp (4) is fixedly sleeved on the plurality of rotating columns (3), an outer groove ring (6) is slidably installed on the inner side of the positioning ring (2), a plurality of control metal blocks (5) are slidably installed in the outer groove of the outer groove ring (6), and the plurality of control metal blocks (5) are connected to the corresponding limiting clamp (4); A supporting cylinder (11) is slidably mounted on the inner side of the positioning ring (2), one end of the supporting cylinder (11) is snap-fitted with the outer groove ring (6), one end of the supporting cylinder (11) is provided with a receiving hole, a triangular metal block (12) is rotatably mounted on the inner wall of the receiving hole, a plurality of limiting sliding grooves (13) are provided on the outer side of the triangular metal block (12), a sliding metal block (14) is slidably mounted on one side inner wall of the plurality of limiting sliding grooves (13), a plurality of supporting holes are provided on the outer side of the supporting cylinder (11), a supporting metal rod (15) is slidably mounted on the inner side of the plurality of supporting holes, the plurality of supporting metal rods (15) are connected to one side of the corresponding sliding metal block (14), a plurality of arc-shaped metal plates (16) are slidably mounted on the top of the outer groove ring (6), one side of the plurality of arc-shaped metal plates (16) are connected to the corresponding plurality of supporting metal rods (15); A reset spring (10) is fixedly mounted on the bottom of the outer groove ring (6), a reset groove is provided on the top of the fixed base (1), and one end of the reset spring (10) is fixedly mounted on the bottom inner wall of the reset groove.

2. The external cylindrical turning tool for a thin-walled cylindrical workpiece according to claim 1, characterized in that: A threaded rod (8) is slidably mounted on the inner side of the outer groove ring (6), and a fixed metal block (7) is fixedly mounted on the inner wall of one side of the outer groove ring (6), and the fixed metal block (7) is fixedly sleeved on the threaded rod (8).

3. The external cylindrical turning tool for a thin-walled cylindrical workpiece according to claim 2, characterized in that: A nut sleeve (9) is fixedly mounted on the inner wall of the bottom of the reset groove, and the nut sleeve (9) is threadedly connected to the threaded rod (8).

4. The external cylindrical turning tool for a thin-walled cylindrical workpiece according to claim 3, characterized in that: A rotating hole is provided at the top of the triangular metal block (12), and the threaded rod (8) is rotatably mounted in the rotating hole. An external gear (17) is fixedly sleeved on the threaded rod (8), and an internal gear (18) is fixedly mounted on the top of the triangular metal block (12), and the internal gear (18) and the external gear (17) are adapted to each other.

Images