A fixture for special-shaped turned parts

Abstract

The utility model provides a clamp for special-shaped turned parts, which relates to the technical field of clamps, and comprises: a main chuck, a driving motor is fixedly installed on the inner rear side of the main chuck; a main shaft is rotatably installed in the center position of the main chuck; a main cam is fixedly installed on the circumferential outer wall of the main shaft; and a clamping head is fixedly installed at the front end of the guide rod. The auxiliary clamping block can symmetrically support the special-shaped turned parts with the main clamping block from both ends, so as to prevent the special-shaped turned parts from being suspended at one end after being clamped due to the long special-shaped turned parts, and avoid the problem that the turning process is unstable due to the suspension of one end of the special-shaped turned parts, and solve the problem that the length of the clamp body cannot be adjusted according to the length of the turned parts, and when the turned parts have a certain length, after the turned parts are mounted on the clamp body, the clamp body can only clamp and fix the turned parts from one end of the turned parts, and the other end of the turned parts is in a suspended state.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for special-shaped turned parts. Background Art

[0002] In the machining industry, turning is a commonly used machining method. When turning some parts with special-shaped outer edges, three-jaw or four-jaw chucks cannot clamp the parts from the outer edge. Therefore, a special fixture for special-shaped turned parts clamped from the inner hole is required. For example, the patent with application number: CN202121418296.0 discloses an auxiliary fixture for turning special-shaped parts on the outer edge. The fixture supports and clamps the special-shaped turned parts from the inner hole of the special-shaped turned parts, so that the turned parts can be turned stably. However, when the existing device such as the above-mentioned device is used, the length of the fixture body cannot be adjusted according to the length of the turned part. When the turned part has a certain length, after the turned part is mounted on the fixture body, the fixture body can only clamp and fix the turned part from one end of the turned part, and the other end of the turned part is in a suspended state. Therefore, during turning, a longer turned part may become unstable due to one side being suspended. Summary of the invention

[0003] The disclosed embodiment relates to a fixture for special-shaped turned parts, which utilizes a main clamping block and a secondary clamping block to move outward so that the main clamping block and the secondary clamping block cooperate with each other to support and clamp the special-shaped turned part mounted on a clamping head, thereby ensuring the stability of the special-shaped turned part during turning processing.

[0004] According to a first aspect of the present disclosure, there is provided a fixture for special-shaped turned parts, which specifically includes: a main chuck, a driving motor is fixedly mounted on the inner rear side of the main chuck; a main shaft is rotatably mounted at the inner center position of the main chuck; a main cam is fixedly mounted on the circumferential outer wall of the main shaft; a guide rod is slidably mounted on the front side of the main chuck; a clamping head is fixedly mounted on the front end of the guide rod; a secondary shaft is rotatably mounted inside the clamping head; a secondary cam is fixedly mounted on the circumferential outer wall of the secondary shaft; the output shaft of the driving motor is connected to the rear end of the main shaft by a spline; and the rear end of the secondary shaft is slidably mounted inside the main shaft by a spline.

[0005] In at least some embodiments,

[0006] A main clamping block is slidably mounted on the circumferential outer wall of the protruding part of the front end of the main chuck; the inner end of the main clamping block is a semicircular structure; a main baffle is fixedly mounted on the outer wall of the main clamping block; the main baffle is a rectangular structure; one end of a main spring is embedded on the inner side of the main baffle; the other end of the main spring is embedded in the interior of the main chuck; a secondary clamping block is slidably mounted on the circumferential outer wall of the clamping head; the inner end of the secondary clamping block is a semicircular structure.

[0007] In at least some embodiments,

[0008] A secondary baffle is fixedly installed on the outer wall of the secondary clamp; the secondary baffle is a rectangular structure; one end of a secondary spring is embedded and installed on the inner side of the secondary baffle; the other end of the secondary spring is embedded and installed inside the clamping head; an adjusting bolt is eccentrically installed on the front side of the main chuck; a driven slider is threadedly installed on the adjusting bolt; the driven slider is also fixedly connected to a guide rod; the driven slider is also slidably installed inside the main chuck.

[0009] In at least some embodiments,

[0010] After the main shaft drives the main cam to rotate to a certain angle, the main cam will push against the semicircular part of the inner end of the main clamping block; the main clamping block will move outward after being pushed; when the main shaft rotates, it will also rotate with the secondary shaft; after the secondary shaft drives the secondary cam to rotate to a certain angle, the secondary cam will push against the semicircular part of the inner end of the secondary clamping block; the secondary clamping block will move outward after being pushed.

[0011] The utility model provides a fixture for special-shaped turned parts, which has the following beneficial effects:

[0012] The clamping head in the clamp can move with the auxiliary clamping block, and the distance between the auxiliary clamping block and the main clamping block is extended by movement, so that when the clamp is clamping a long special-shaped turned part, the moved auxiliary clamping block can symmetrically support the special-shaped turned part with the main clamping block from both ends, thereby preventing the special-shaped turned part from being left hanging at one end after clamping due to the long special-shaped turned part, and avoiding unstable turning processing due to one end of the special-shaped turned part being left hanging.

[0013] This clamp utilizes a main clamp block and a secondary clamp block to hold and position the special-shaped turned part from the inner hole of the special-shaped turned part, thereby ensuring the stability of the special-shaped turned part during the turning process. In addition, the main clamp block and the secondary clamp block in this clamp can be synchronously controlled by a driving motor, and the secondary clamp block can still be synchronously controlled after the position is changed, thus saving the number of driving components and reducing the production cost of this clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0015] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0016] In the attached picture:

[0017] Figure 1 A schematic diagram showing the initial state structure of the clamping head of the present application is shown;

[0018] Figure 2 A schematic diagram of the structure of the clamping head in the extended state of the present application is shown;

[0019] Figure 3 A schematic diagram of the structure of the clamping head in the present application in a disassembled state is shown;

[0020] Figure 4 A schematic diagram of a half-section structure of the main chuck of the present application is shown;

[0021] Figure 5 This application shows Figure 4 The enlarged structural diagram of part A in the middle;

[0022] Figure 6 The schematic diagram of the main shaft and secondary shaft structure of the present application is shown;

[0023] Reference numerals list

[0024] 1. Main chuck; 2. Driving motor; 3. Main shaft; 4. Main cam; 5. Main clamping block; 6. Main baffle; 7. Main spring; 8. Guide rod; 9. Clamping head; 10. Secondary shaft; 11. Secondary cam; 12. Secondary clamping block; 13. Secondary baffle; 14. Secondary spring; 15. Adjusting bolt; 16. Driven slider. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figures 1 to 6 :

[0027] Embodiment 1:

[0028] The utility model proposes a clamp for special-shaped turned parts, comprising: a main chuck 1, a driving motor 2 is fixedly installed on the inner rear side of the main chuck 1; a main shaft 3 is rotatably installed at the center position inside the main chuck 1; a main cam 4 is fixedly installed on the circumferential outer wall of the main shaft 3; a guide rod 8 is slidably installed on the front side of the main chuck 1; a clamping head 9 is fixedly installed on the front end of the guide rod 8; a secondary shaft 10 is rotatably installed inside the clamping head 9; a secondary cam 11 is fixedly installed on the circumferential outer wall of the secondary shaft 10; the output shaft of the driving motor 2 is connected to the rear end of the main shaft 3 through a spline; and the rear end of the secondary shaft 10 is slidably installed in the interior of the main shaft 3 through a spline.

[0029] By fitting the inner hole of the special-shaped turned part onto the clamping head 9, and then starting the driving motor 2, so that it rotates with the main shaft 3 and the secondary shaft 10, the main shaft 3 and the secondary shaft 10 respectively rotate with the main cam 4 and the secondary cam 11, so that the main cam 4 and the secondary cam 11 push the main clamping block 5 and the secondary clamping block 12 respectively, so that the main clamping block 5 and the secondary clamping block 12 are moved outward by the pushing to tighten and fix the special-shaped turned part.

[0030] Embodiment 2, based on embodiment 1,

[0031] A main clamping block 5 is slidably mounted on the circumferential outer wall of the protruding part of the front end of the main chuck 1; the inner end of the main clamping block 5 is a semicircular structure; a main baffle 6 is fixedly mounted on the outer wall of the main clamping block 5; the main baffle 6 is a rectangular structure; one end of a main spring 7 is embedded and mounted on the inner side of the main baffle 6; the other end of the main spring 7 is embedded and mounted inside the main chuck 1; a secondary clamping block 12 is slidably mounted on the circumferential outer wall of the clamping head 9; the inner end of the secondary clamping block 12 is a semicircular structure; a secondary baffle 13 is fixedly mounted on the outer wall of the secondary clamping block 12; the secondary baffle 13 is a rectangular structure; one end of a secondary spring 14 is embedded and mounted on the inner side of the secondary baffle 13; the other end of the secondary spring 14 is embedded and mounted inside the clamping head 9.

[0032] After the main cam 4 and the auxiliary cam 11 stop pushing the main clamp 5 and the auxiliary clamp 12, the main clamp 5 and the auxiliary clamp 12 will be restored under the action of the main spring 7 and the auxiliary spring 14 respectively, canceling the support and positioning of the special-shaped turned parts, making it easier to remove the turned special-shaped turned parts.

[0033] Embodiment 3, based on embodiment 2,

[0034] An adjusting bolt 15 is eccentrically installed on the front side of the main chuck 1; a driven slider 16 is threadedly installed on the adjusting bolt 15; the driven slider 16 is also fixedly connected to a guide rod 8; the driven slider 16 is also slidably installed inside the main chuck 1; after the main shaft 3 drives the main cam 4 to rotate to a certain angle, the main cam 4 will push the semicircular part of the inner end of the main clamping block 5; the main clamping block 5 will move outward after being pushed; when the main shaft 3 rotates, it will also drive the secondary shaft 10 to rotate; after the secondary shaft 10 drives the secondary cam 11 to rotate to a certain angle, the secondary cam 11 will push the semicircular part of the inner end of the secondary clamping block 12; the secondary clamping block 12 will move outward after being pushed.

[0035] By using a tool to rotate the adjusting bolt 15, the adjusting bolt 15 is rotated to move the driven slider 16, the guide rod 8 and the clamping head 9 forward, so that the clamping head 9 increases the distance between the auxiliary clamping block 12 and the main clamping block 5 by moving forward, so that the auxiliary clamping block 12 and the main clamping block 5 can cooperate to stably support the longer special-shaped turned parts.

[0036] The working principle of this embodiment:

[0037] First, the clamp is installed at a suitable position of the lathe by appropriate means and waits for use. When clamping, the inner hole of the special-shaped turned part is sleeved on the clamping head 9, and then the driving motor 2 is started to rotate with the main shaft 3 and the auxiliary shaft 10, so that the main shaft 3 and the auxiliary shaft 10 respectively rotate with the main cam 4 and the auxiliary cam 11, so that the main cam 4 and the auxiliary cam 11 push the main clamping block 5 and the auxiliary clamping block 12 respectively, so that the main clamping block 5 and the auxiliary clamping block 12 are moved outward under the influence of the push to tighten and fix the special-shaped turned part, and then The lathe can be used to rotate the fixture and the special-shaped turned parts clamped on the fixture for turning. When processing longer special-shaped turned parts, the adjusting bolt 15 can be rotated by using a tool, so that the adjusting bolt 15 can rotate and move the driven slider 16, the guide rod 8 and the clamping head 9 forward, so that the clamping head 9 increases the distance between the auxiliary clamp 12 and the main clamp 5 by moving forward, so that the auxiliary clamp 12 and the main clamp 5 can cooperate to stably support the longer special-shaped turned parts.

[0038] In this article, there are a few points to note:

[0039] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0040] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0041] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A fixture for special-shaped turned parts, comprising: A main chuck (1), wherein a driving motor (2) is fixedly mounted on the inner rear side of the main chuck (1); characterized in that a main shaft (3) is rotatably mounted at the inner center of the main chuck (1); a main cam (4) is fixedly mounted on the circumferential outer wall of the main shaft (3); A guide rod (8) is slidably installed on the front side of the main chuck (1); a clamping head (9) is fixedly installed on the front end of the guide rod (8); a secondary shaft (10) is rotatably installed inside the clamping head (9); a secondary cam (11) is fixedly installed on the circumferential outer wall of the secondary shaft (10); the output shaft of the drive motor (2) is connected to the rear end of the main shaft (3) through a spline; and the rear end of the secondary shaft (10) is slidably installed inside the main shaft (3) through a spline.

2. A fixture for special-shaped turned parts according to claim 1, characterized in that: A main clamping block (5) is slidably mounted on the circumferential outer wall of the protruding portion at the front end of the main clamping disc (1); the inner end of the main clamping block (5) is a semicircular structure; a main baffle (6) is fixedly mounted on the outer wall of the main clamping block (5); the main baffle (6) is a rectangular structure.

3. A fixture for special-shaped turned parts according to claim 2, characterized in that: One end of a main spring (7) is embedded and installed on the inner side of the main baffle (6); the other end of the main spring (7) is embedded and installed inside the main chuck (1); a secondary clamping block (12) is slidably installed on the circumferential outer wall of the clamping head (9); the inner end of the secondary clamping block (12) is a semicircular structure.

4. A fixture for special-shaped turned parts according to claim 3, characterized in that: An auxiliary baffle (13) is fixedly mounted on the outer wall of the auxiliary clamping block (12); the auxiliary baffle (13) is a rectangular structure; one end of an auxiliary spring (14) is embedded and mounted on the inner side of the auxiliary baffle (13); and the other end of the auxiliary spring (14) is embedded and mounted inside the clamping head (9).

5. A fixture for special-shaped turned parts according to claim 4, characterized in that: An adjusting bolt (15) is eccentrically mounted on the front side of the main chuck (1); a driven slider (16) is threadedly mounted on the adjusting bolt (15); the driven slider (16) is also fixedly connected to a guide rod (8); the driven slider (16) is also slidably mounted inside the main chuck (1).

6. A fixture for special-shaped turned parts according to claim 5, characterized in that: After the main shaft (3) drives the main cam (4) to rotate to a certain angle, the main cam (4) will push against the semicircular portion at the inner end of the main clamping block (5); the main clamping block (5) will move outward after being pushed; and when the main shaft (3) rotates, it will also drive the secondary shaft (10) to rotate.

7. A fixture for special-shaped turned parts according to claim 6, characterized in that: After the auxiliary shaft (10) drives the auxiliary cam (11) to rotate to a certain angle, the auxiliary cam (11) will push against the semicircular part of the inner end of the auxiliary clamping block (12); after being pushed, the auxiliary clamping block (12) will move outward.

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