Workpiece clamp device capable for changing clamp angle

• US 9,895,792 B2
• Filed: 06/21/2016
• Issued: 02/20/2018
• Est. Priority Date: 06/21/2016
• Status: Active Grant

• Current Assignee: Ju-Tan Chen
• Original Assignee: Ju-Tan Chen
• Inventors: Chen, Ju-Tan
• Primary Examiner(s): Waggle, Jr., Larry E
• Assistant Examiner(s): Nejad, Mahdi H
• Application Number:
  US15/188,466
• Publication Number:
  US 20170361426A1
• Time in Patent Office: 609 Days
• Field of Search: 269234, 269153, 269232, 269257, 269258, 269138
• CPC Class Codes: B25B 1/08 using cams
• CPC Class Codes: B25B 1/10 using screws
• CPC Class Codes: B25B 1/2405 Construction of the jaws
• CPC Class Codes: B25B 1/241 characterised by surface features or material
• CPC Class Codes: B25B 1/2452 with supplementary jaws
• CPC Class Codes: B25B 1/2478 with more than one pair of jaws
• CPC Class Codes: B25B 5/08 using cams
• CPC Class Codes: B25B 5/10 using screws
• CPC Class Codes: B25B 5/163 Jaws or jaw attachments

Abstract

A workpiece clamp device capable for changing clamp angle is arranged on a base plane and comprises a first and a second movable blocks, a driving block, at least one first and at least one second elastic members, at least one first and at least one second cylinders, and at least one third and at least one fourth elastic members. Since the first and the second cylinders are slightly rotatably and detachably respectively embedded in the first and the second embedding grooves to make the first and the second rough surfaces be exposed and the elasticity of the third and the fourth elastic members is cooperated therewith, the first and the second rough surfaces are slightly fine-tuned based on the shapes and sizes of the workpieces so as to be suitable for clamping and fastening the workpieces with different shapes.

Claims

1. A workpiece clamp device capable of changing a clamp angle and arranged on a base plane, the device comprising:

a first movable block, having a first main body, a first inclined surface, a first limit portion, and a first clamp surface, the first inclined surface is arranged at an inner side of the first main body and inclined from a bottom to a top and from an interior to an exterior, the first clamp surface is arranged at an outer side of the first main body, corresponding to the first inclined surface, the first limit portion is arranged at each of a front end and a rear end of the first main body, the first inclined surface has at least one first stop portion, at least one first embedding groove is arranged at the first clamp surface, a first receiving groove is further concavely arranged inside the at least one first embedding groove, an axial direction of the at least one first embedding groove is orthogonal to an axial direction of the first receiving groove;

a second movable block, arranged corresponding to the first movable block and having a second main body, a second inclined surface, a second limit portion, and a second clamp surface, the second inclined surface is arranged at an inner side of the second main body and inclined from a bottom to a top and from an interior to an exterior, the second clamp surface is arranged at an outer side of the second main body and corresponding to the second inclined surface, the second limit portion is arranged at each of a front end and a rear end of the second inclined surface, the second inclined surface has at least one second stop portion, at least one second embedding groove is arranged at the second clamp surface, a second receiving groove is further concavely arranged inside the at least one second embedding groove, an axial direction of the at least one second embedding groove is orthogonal to an axial direction of the second receiving groove, the first inclined surface is faced to the second inclined surface and an inverted cone receiving space is defined between the first inclined surface and the second inclined surface;

a driving block is arranged between the first movable block and the second movable block and in the receiving space so as to move up and down, and having a third main body, a third inclined surface, a fourth inclined surface, at least one third stop portion, at least one fourth stop portion, a third limit portion, and a fourth limit portion, the third inclined surface and the fourth inclined surface are respectively arranged at two opposed sides of the third main body, the third inclined surface is faced to the first inclined surface and inclined from a bottom to a top and from an interior to an exterior, the fourth inclined surface is faced to the second inclined surface and inclined from the bottom to the top and from the interior to the exterior, the at least one third stop portion is arranged on the third inclined surface and corresponding to the at least one first stop portion, the at least one fourth stop portion is arranged on the fourth inclined surface and corresponding to the at least one second stop portion, the third limit portion is arranged at each of a front edge and a rear edge of the third inclined surface and corresponding to the first limit portion to cooperate with each other so as to slidably limit, the fourth limit portion is arranged at each of a front edge and a rear edge of the fourth inclined surface and corresponding to the second limit portion to cooperate with each other so as to slidably limit;

at least one first elastic member, arranged between the at least one first stop portion and the at least one third stop portion, two ends of the at least one first elastic member are respectively abutted against the at least one first stop portion and the at least one third stop portion;

at least one second elastic member, arranged between the at least one second stop portion and the at least one fourth stop portion, two ends of the at least one second elastic member are respectively abutted against the at least one second stop portion and the at least one fourth stop portion;

at least one first cylinder, rotatably and detachably arranged in the at least one first embedding groove and having a first cylindrical body and a first rough surface arranged at one side of the first cylindrical body along a length direction thereof and exposed outside of the at least one first embedding groove;

at least one second cylinder, rotatably and detachably arranged in the at least one second embedding groove and having a second cylindrical body and a second rough surface arranged at one side of the second cylindrical body along a length direction thereof and exposed outside of the at least one second embedding groove;

at least one third elastic member, received in the at least one first receiving groove, two ends of the at least one third elastic member are respectively abutted against the first receiving groove and one side of the at least one first cylinder opposite to the first rough surface; and

at least one fourth elastic member, received in the at least one second receiving groove, two ends of the at least one fourth elastic member are respectively abutted against the second receiving groove and one side of the at least one second cylinder opposite to the second rough surface.

2. The workpiece clamp device as claimed in claim 1, wherein the at least one first, second, third, and fourth stop portions are each a vertical blind hole.

3. The workpiece clamp device as claimed in claim 1, wherein the first and the second limit portions are each a sliding groove, the third and the fourth limit portions are each a sliding track, the first limit portion and the third limit portion are cooperated with each other so as to slidably limit, and the second limit portion and the fourth limit portion are cooperated with each other so as to slidably limit.

4. The workpiece clamp device as claimed in claim 1, wherein the first rough surface and the second rough surface are arranged as a plurality of square pyramids.

5. The workpiece clamp device as claimed in claim 1, wherein the third main body of the driving block has a vertical step hole, a bolt passes through the vertical step hole of the driving block so as to screw with the base plane, a head portion of the bolt is abutted against the vertical step hole, the driving block is controlled to move up and down as the bolt is screwed in and screwed out relative to the base plane and simultaneously cooperated with elasticity of the at least one first and second elastic members, and the third inclined surface engages the first inclined surface and the fourth inclined surface engages the second inclined surface so that the first movable block and the second movable block are moved inward and outward.

6. The workpiece clamp device as claimed in claim 1, wherein the at least one first embedding groove is a single one first embedding groove, the at least one second embedding groove is a single one second embedding groove, the axial direction of the first embedding groove is parallel to a length direction of the first movable block, and the axial direction of the second embedding groove is parallel to a length direction of the second movable block.

7. The workpiece clamp device as claimed in claim 1, wherein the at least one first embedding groove is two first embedding grooves which are spaced apart from each other, the at least one second embedding groove is two second embedding grooves which are spaced apart from each other, the axial direction of each first embedding groove is parallel to a height direction of the first movable block, and the axial direction of each second embedding groove is parallel to a height direction of the second movable block.

8. The workpiece clamp device as claimed in claim 1, wherein a longitudinal section of each of the first clamp surface and the second clamp surface is concave V-shaped, the first clamp surface has a first upper half portion and a first lower half portion, the second clamp surface has a second upper half portion and a second lower half portion, the at least one first embedding groove is two first embedding grooves which are respectively concavely arranged at the first upper half portion and the first lower half portion, the at least one second embedding groove is two second embedding grooves which are respectively concavely arranged at the second upper half portion and the second lower half portion, the axial direction of each first embedding groove is parallel to a length direction of the first movable block, and the axial direction of each second embedding groove is parallel to a length direction of the second movable block.