CN213106439U - Fast forward bow clamp - Google Patents
Fast forward bow clamp Download PDFInfo
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- CN213106439U CN213106439U CN202021458864.5U CN202021458864U CN213106439U CN 213106439 U CN213106439 U CN 213106439U CN 202021458864 U CN202021458864 U CN 202021458864U CN 213106439 U CN213106439 U CN 213106439U
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- split nut
- hole
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- clamping
- clamping screw
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000013459 approach Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a fast forward bow clamp, which comprises a clamp body and a clamping screw rod, wherein the clamp body is C-shaped, the upper end part is an L-shaped plane, and the horizontal plane of the L-shaped plane is vertically provided with a round through hole which can pass through the clamping screw rod; a slidable split nut is arranged on the horizontal plane of the L-shaped plane, and a clamping threaded hole of the split nut is coaxial with the round through hole; the split nut clamping threaded hole is in threaded fit with the clamping screw, a chuck is arranged at the lower end of the clamping screw, and a slidable hand rod is transversely placed at the upper end of the clamping screw. The split nut is additionally arranged on the clamp body, so that the clamp can be rapidly moved downwards, and the working efficiency is improved. The structure has the advantages of reliable work, convenient manufacture and simple and convenient operation. As a novel clamping tool, series products with different sizes can be manufactured, and the requirements of users are met.
Description
Technical Field
The utility model relates to a fast forward bow-shaped clamp belongs to clamping tool technical field.
Background
The bow-shaped clamp sold in the market at present is a design product used for clamping workpieces, has specifications of different sizes, and is displaced up and down by rotating a screw rod. In order to solve the problem, the patent application No. CN2012205261625 discloses a fast forward bow clamp, which comprises a clamp body, a screw rod, a clamp head and a hand rod, wherein the upper end of the clamp body is provided with a dovetail groove, the dovetail groove is in sliding fit with a dovetail cylinder of a sliding block, and the screw rod is matched with a threaded hole in the sliding block. The quick displacement of the sliding block is realized by additionally arranging the sliding pair formed by combining the dovetail groove and the sliding block, and after the chuck is close to the object, the hand lever is rotated to clamp the object, so that the aim of quickly clamping the object is fulfilled. However, the scheme has certain design defects, the dovetail groove and the sliding block are difficult to manufacture, the cost is high, and the popularization and the application in practice are difficult. In addition, after the sliding block chuck moves downwards to approach an object, because the side surface of the dovetail groove is not locked by the set screw, when the hand lever is rotated to clamp the object, the sliding block moves upwards due to clamping reaction force, and the object cannot be effectively clamped.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a fast forward bow clamp which can achieve the purpose of fast clamping a workpiece.
The utility model provides a technical scheme that its technical problem adopted is: a fast forward bow clamp comprises a clamp body, a clamping screw rod and split nuts, wherein the clamp body is C-shaped, the upper end part of the clamp body is an L-shaped plane, a circular through hole capable of penetrating through the clamping screw rod is vertically arranged on the horizontal plane of the L-shaped plane, and a cylindrical cushion block coaxial with the circular through hole is arranged at the lower end part of the clamp body; a slidable split nut is arranged on the horizontal plane of the L-shaped plane, and a clamping threaded hole of the split nut is coaxial with the round through hole; the split nut comprises two split thread blocks I and II, the side surface of the split nut is horizontally provided with an adjusting threaded hole and a round through hole which are parallel to each other, the adjusting threaded hole is in threaded fit with the adjusting screw rod, the adjusting threaded hole in the thread block I is consistent with the thread direction of the adjusting screw rod, and the adjusting threaded hole in the thread block II is opposite to the thread direction of the adjusting screw rod; the circular through hole is in clearance fit with the cylindrical pin, and one end of the cylindrical pin is fixed on one side of the clamp body; the split nut clamping threaded hole is in threaded fit with the clamping screw, a chuck is arranged at the lower end of the clamping screw, and a slidable hand rod is transversely placed at the upper end of the clamping screw.
Further, the diameter of the adjusting threaded hole of the split nut is 8-10 mm.
Further, the diameter of the round through hole of the split nut is 8-10 mm.
Further, the diameter of the clamping screw is 12-20 mm.
The beneficial effects of the utility model are that, through add split nut on the clamp body, realize the chuck to the quick clamp of work piece tightly to work efficiency has been improved. The structure has the advantages of reliable work, convenient manufacture and simple and convenient operation. As a novel clamping tool, series products with different sizes can be manufactured, and the requirements of users are met.
Drawings
The invention will be further explained with reference to the drawings and the specific embodiments.
Fig. 1 is a front view of a fast forward clamp bow of the present invention.
Fig. 2 is a cross-sectional view of fig. 1A-a.
Fig. 3 is a perspective view of a fast forward arcuate clamp of the present invention.
In the figure: 1. the clamp comprises a cushion block, 2 parts of a clamp head, 3 parts of a clamping screw rod, 4 parts of a clamp body, 5 parts of split nuts, 6 parts of a hand lever, 51 parts of thread blocks I, 52 parts of an adjusting screw rod, 53 parts of thread blocks II, 54 parts of a cylindrical pin.
Detailed Description
As shown in fig. 1 to 3, a fast forward bow clamp comprises a clamp body 4, a clamping screw 3 and a split nut, wherein the clamp body 4 is C-shaped, the upper end of the clamp body 4 is an L-shaped plane, a horizontal plane of the L-shaped plane is provided with a circular through hole capable of penetrating through the clamping screw 3, the lower end of the clamp body 4 is provided with a cylindrical cushion block 1 coaxial with the circular through hole, and the cylindrical cushion block 1 can be cast with the clamp body 4 into a whole; a slidable split nut 5 is installed on the horizontal plane of the L-shaped plane, and a clamping threaded hole of the split nut 5 is coaxial with the round through hole; the split nut 5 comprises two half-split thread blocks I51 and II53, the side surface of the split nut 5 is horizontally provided with an adjusting threaded hole and a round through hole which are parallel to each other, the adjusting threaded hole is in threaded fit with the adjusting screw rod 52, the adjusting threaded hole in the thread block I51 is consistent with the thread direction of the adjusting screw rod 52, and the adjusting threaded hole in the thread block II53 is opposite to the thread direction of the adjusting screw rod 52; the round through hole is in clearance fit with the cylindrical pin 54, and one end of the cylindrical pin 54 is fixed on one side of the clamp body 4; the cylindrical pin 54 is in clearance fit with the round through hole of the split nut 5, so that the guiding function is realized. The split nut 5 is in threaded fit with the clamping screw rod 3, the lower end of the clamping screw rod 3 is provided with a chuck 2, and the upper end of the clamping screw rod 3 is transversely provided with a slidable hand rod 6.
The diameter of the adjusting threaded hole of the split nut 5 is between 8 and 10 mm. The diameter of the round through hole of the split nut 3 is between 8 and 10 mm. The diameter of the clamping screw 3 is between 12 and 20 mm.
The split nut comprises the following working principles and structures: according to the relative motion relationship of the screw and the nut, the motion modes of the common screw transmission are divided into two types: one is that the screw rotates and the nut moves; the other is that the nut is fixed, and the screw rod rotates and moves. The split nut utilizes the principle of a compound screw mechanism, two halves of the split nut are equivalent to two screw pairs with opposite rotation directions, and the two screw pairs can realize quick reverse movement, namely, the two screw pairs approach to each other or leave in reverse. The clamping threaded hole is processed on the axis of the square column body, then the side face of the clamping threaded hole is processed with the round through hole and the adjusting threaded hole which are parallel to each other along the horizontal direction, one section of the adjusting threaded hole is a left-hand thread, and the other section of the adjusting threaded hole is a right-hand thread. Then the clamping threaded hole is split into a thread block I and a thread block II along the central line of the clamping threaded hole. A splitting method of linear cutting can be adopted, and the gap of a cutting seam is less than 0.2 mm. And a cylindrical pin for guiding is arranged in the circular through hole. And an adjusting screw is arranged in the adjusting threaded hole. Because the adjusting threaded hole is two sections of threads with different turning directions, when the adjusting screw rod has different rotating directions, the thread block I and the thread block II are either close to each other or are away from each other. The split nut is a universal component, is produced by professional manufacturers, and can be directly purchased and installed according to required specifications, so that the manufacturing cost is reduced.
The workpiece to be processed is placed between the clamp body 4 and the clamping screw 3, the adjusting screw 52 is rotated to open the split nut 5, the chuck 2 at the end part of the clamping screw 3 is rapidly moved downwards to the upper surface of the workpiece under the action of gravity, the adjusting screw 52 is rotated reversely to close the split nut 5, and then the upper hand lever 6 is rotated to drive the chuck 2 at the end part of the clamping screw 3 to slowly clamp the workpiece. The split nut 5 is additionally arranged, so that the chuck 2 can move downwards quickly, and the clamping screw 3 is rotated to clamp the workpiece after the chuck 2 approaches the workpiece, so that the working efficiency is improved. The structure has the advantages of reliable work, convenient manufacture and simple and convenient operation. As a novel clamping tool, the clamping tool can be made into series products with different sizes, and the requirements of users are met.
Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.
Claims (4)
1. A fast forward bow clamp comprises a clamp body, a clamping screw rod and a split nut, and is characterized in that: the clamp body is C-shaped, the upper end part of the clamp body is an L-shaped plane, a round through hole capable of penetrating through the clamping screw rod is vertically arranged on the horizontal plane of the L-shaped plane, and a cylindrical cushion block coaxial with the round through hole is arranged at the lower end part of the clamp body; a slidable split nut is arranged on the horizontal plane of the L-shaped plane, and a clamping threaded hole of the split nut is coaxial with the round through hole; the split nut comprises two split thread blocks I and II, the side surface of the split nut is horizontally provided with an adjusting threaded hole and a round through hole which are parallel to each other, the adjusting threaded hole is in threaded fit with the adjusting screw rod, the adjusting threaded hole in the thread block I is consistent with the thread direction of the adjusting screw rod, and the adjusting threaded hole in the thread block II is opposite to the thread direction of the adjusting screw rod; the circular through hole is in clearance fit with the cylindrical pin, and one end of the cylindrical pin is fixed on one side of the clamp body; the split nut clamping threaded hole is in threaded fit with the clamping screw, a chuck is arranged at the lower end of the clamping screw, and a slidable hand rod is transversely placed at the upper end of the clamping screw.
2. A fast forward arcuate clamp as claimed in claim 1 wherein: the diameter of the adjusting threaded hole of the split nut is 8-10 mm.
3. A fast forward arcuate clamp as claimed in claim 1 wherein: the diameter of the round through hole of the split nut is between 8 and 10 mm.
4. A fast forward arcuate clamp as claimed in claim 1 wherein: the clamping screw diameter varies between 12-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021458864.5U CN213106439U (en) | 2020-07-22 | 2020-07-22 | Fast forward bow clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021458864.5U CN213106439U (en) | 2020-07-22 | 2020-07-22 | Fast forward bow clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213106439U true CN213106439U (en) | 2021-05-04 |
Family
ID=75679416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021458864.5U Active CN213106439U (en) | 2020-07-22 | 2020-07-22 | Fast forward bow clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213106439U (en) |
-
2020
- 2020-07-22 CN CN202021458864.5U patent/CN213106439U/en active Active
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