CN211760947U - Stepless variable-pitch clamp - Google Patents
Stepless variable-pitch clamp Download PDFInfo
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- CN211760947U CN211760947U CN201922372302.2U CN201922372302U CN211760947U CN 211760947 U CN211760947 U CN 211760947U CN 201922372302 U CN201922372302 U CN 201922372302U CN 211760947 U CN211760947 U CN 211760947U
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Abstract
A stepless variable-pitch clamp comprises a bottom plate, wherein more than three groups of adjusting hole groups are distributed on the bottom plate, each adjusting hole group consists of more than two groups of circumferential hole groups which are sequentially arranged on the periphery of each concentric circle of a circle system, each circumferential hole group consists of more than two lower adjusting holes, the concentric circle system consists of more than two concentric circles, and the distance between any two adjacent concentric circles in the concentric circle system is the same; the support blocks are of a bending structure consisting of a bottom plate and a vertical plate standing on the bottom plate, more than one group of upper adjusting hole groups are arranged on the bottom plate, each group of upper adjusting hole groups consists of more than two upper adjusting holes, and threaded through holes are formed in the vertical plate; the pressing rod is arranged at the threaded through hole; each supporting block is fixed on the bottom plate through bolts arranged at the finished adjusting holes consisting of the upper adjusting holes and the lower adjusting holes. Compared with the prior clamp, the utility model has the advantages of quick adjustment, simple manufacture, convenient switching, low cost and the like.
Description
Technical Field
The utility model belongs to a rough machining's of dysmorphism piece anchor clamps in machining.
Background
At present, in the machining industry, products in small batches such as samples, test products and the like are in endless numbers. Before mass production, most enterprises are reluctant to put in special fixtures for production, and the workpieces are fixed by adopting temporary welding, punching, overlapping and other modes for processing. The temporary clamp is time-consuming and labor-consuming to manufacture and unstable in clamping. Especially for rough machining, the cost is too high.
Disclosure of Invention
The utility model aims at providing a stepless displacement anchor clamps that preparation is simple, adaptability is wide come the centre gripping part to process, can press from both sides tightly according to product appearance quick adjustment clamping position.
The technical solution of the utility model is that: the method comprises the following steps:
the adjustable hole group comprises more than two groups of circumference hole groups which are sequentially arranged on the circumference of each concentric circle of a circle system, each circumference hole group comprises more than two lower adjustable holes, the concentric circle system comprises more than two concentric circles, and the distance between any two adjacent concentric circles in the concentric circle system is the same;
the supporting blocks are of a bending structure consisting of a bottom plate and a vertical plate standing on the bottom plate, more than one group of upper adjusting hole groups corresponding to the circumferential hole groups are arranged on the bottom plate, each group of upper adjusting hole groups consists of more than two upper adjusting holes, and threaded through holes are formed in the vertical plate;
the pressing rod is used for pressing a workpiece to be clamped and is arranged at the threaded through hole;
each supporting block is fixed on the bottom plate through a bolt arranged at the finished adjusting hole consisting of the upper adjusting hole and the lower adjusting hole, and the thread adjusting length of the pressing rod is greater than or equal to the distance between equidistant concentric circles on the bottom plate.
Three groups of adjusting hole groups are distributed on the bottom plate, each adjusting hole group consists of more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of the concentric circle system, each circumferential hole group consists of two lower adjusting holes, and the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the two adjacent groups of adjusting hole groups is 120 degrees.
Four groups of adjusting hole groups are distributed on the bottom plate, each adjusting hole group consists of more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of the concentric circle system, each circumferential hole group consists of two lower adjusting holes, and the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the two adjacent groups of adjusting hole groups is 90 degrees.
Six groups of adjusting hole groups are distributed on the bottom plate, and the six groups of adjusting hole groups comprise a first four groups of adjusting hole groups and a second two groups of adjusting hole groups, wherein the first four groups of adjusting hole groups and the second four groups of adjusting hole groups are both formed by more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of a concentric circle system, each circumferential hole group is formed by two lower adjusting holes, an included angle between perpendicular bisectors of connecting lines of centers of two lower adjusting holes of the circumferential hole groups in the first four groups of adjusting hole groups in the adjacent two groups of adjusting hole groups is 90 degrees, an included angle between perpendicular bisectors of connecting lines of centers of two lower adjusting holes of the circumferential hole groups in the second two groups of adjusting hole groups in the four groups of adjusting hole groups is 120 degrees, and an included angle between a perpendicular bisector of connecting line of centers of two lower adjusting holes of the circumferential hole groups in the first four groups of adjusting hole groups and a perpendicular bisector of connecting lines of centers.
The supporting block is of an L-shaped bending structure. When the size of the workpiece is small and the tangential moment is not large, only two screws with adjusting holes in the tangential direction of the circle system are needed to be installed. When the size of the workpiece is large and the tangential moment is large, four upper adjusting holes are formed below the supporting block, so that the supporting block is good in stability.
The radius range of the concentric circles in the concentric circle system is 60mm-400 mm.
The lower adjusting hole is a countersunk threaded hole.
The distance between the equidistant concentric circles can be adjusted according to actual conditions, but the adjustable length of the pressing rod is more than or equal to the distance between the equidistant concentric circles, so that stepless distance adjustment can be realized. The thread installation size of the bottom of the supporting block needs to correspond to the threaded holes uniformly distributed on the equidistant concentric circle so as to be convenient for adjustment and installation.
The utility model discloses can solve fast small batch volume and the trouble of the man-hour preparation frock clamp of single work piece to there is obvious advantage in the small moment processing of dysmorphism piece. Compared with the existing special tool clamp, the tool clamp has the advantages of being fast in adjustment, simple to manufacture, convenient to switch, low in cost and the like.
Drawings
Fig. 1 is a schematic view of an assembly structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the relative positions of the hold down bar and the support block;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a top view of FIG. 3;
in the figure: 1 is a workpiece, 2 is a support rod, 3 is a pressing rod, 4 is a bottom plate, and 5 is a countersunk threaded hole.
Detailed Description
In fig. 1 and 2, the utility model comprises a cast iron bottom plate 4, a continuous countersunk head threaded hole 5 is drilled on the bottom plate 4 in 6 directions of an equidistance concentric circle system for fixing the supporting block 2. Three and four of the hole systems in 6 directions form top supports with included angles of 120 degrees and 90 degrees respectively in the equidistant concentric circle system, and one direction is shared. The supporting block 2 is made into an L-shaped bending structure, the bottom of the supporting block is used for supporting a workpiece, a threaded through hole in the horizontal direction is formed in the upper portion of the L-shaped bending structure, and a threaded pressing rod 3 penetrates through the threaded through hole. The head of the top of the pressing rod 3 adopts a ball head slightly larger than the diameter of the thread, and the tail of the pressing rod is made into an inner hexagonal counter bore so as to be convenient to assemble and disassemble by using a wrench. The supporting blocks 2 are fixed on the bottom plate from countersunk threaded holes in the reverse side of the bottom plate by using screws, and the holes in the bottom plate are arranged at equal intervals according to concentric circles. The distance between the centers of the holes on the supporting block 2 is equal to the distance between the holes on the bottom plate, and other three holes can be simultaneously assembled when the supporting block 2 is placed on any one hole on the bottom plate 4, so that the supporting block 2 can be linearly adjusted in position on the holes. The pressing rod 3 is used for pressing the workpiece in a front-end ball head mode, and the workpiece can be effectively pressed when the cambered surface is small. The thread length of the pressing rod is larger than the distance between the equidistant concentric circles on the bottom plate, so that linear adjustment can be realized on the stroke smaller than the distance. The top of the compression rod adopts a ball head slightly larger than the diameter of the thread, and the tail of the compression rod adopts a mode of an inner hexagonal counter bore so as to be convenient for using an inner hexagonal wrench to assemble and disassemble. The length of the L-shaped support is selected by the support block 2 according to the condition of the workpiece so as to support the workpiece 1.
In fig. 3, 4 and 5, the supporting block 2 is a bending structure composed of a bottom plate and a vertical plate standing on the bottom plate, more than one group of upper adjusting hole groups corresponding to the circumferential hole groups are arranged on the bottom plate, each group of upper adjusting hole groups is composed of more than two upper adjusting holes, a threaded through hole is arranged on the vertical plate, and a pressing rod 3 for pressing a workpiece to be clamped is arranged at the threaded through hole.
During the use, select a set of suitable shore according to the appearance of work piece earlier, tentatively confirm other three (or two) ascending supporting shoe positions of orientation according to the size of work piece to install the compression bar, if the moment of force is great during processing, can use the nut fastening at the compression bar afterbody. After the workpiece is placed, the position of the last group (or two groups) of supporting blocks is confirmed, and the pressing rod is installed and screwed. After the first workpiece is processed, the workpiece can be taken out and the next workpiece can be processed by only loosening one (or two) pressing rods.
Claims (7)
1. The utility model provides a stepless displacement anchor clamps which characterized in that: the method comprises the following steps:
the adjustable hole group comprises a bottom plate (4), wherein more than three groups of adjusting hole groups are annularly distributed on the bottom plate (4), each adjusting hole group consists of more than two groups of circumferential hole groups which are sequentially arranged on the periphery of each concentric circle of a circle system, each circumferential hole group consists of more than two lower adjusting holes, the concentric circle system consists of more than two concentric circles, and the distance between any two adjacent concentric circles in the concentric circle system is the same;
the supporting blocks (2) are of a bending structure consisting of a bottom plate and a vertical plate standing on the bottom plate, more than one group of upper adjusting hole groups corresponding to the circumferential hole groups are arranged on the bottom plate, each group of upper adjusting hole groups consists of more than two upper adjusting holes, and threaded through holes are formed in the vertical plate;
the clamping device comprises a pressing rod (3) used for pressing a workpiece to be clamped, wherein the pressing rod (3) is arranged at a threaded through hole;
each supporting block (2) is fixed on the bottom plate (4) through a bolt arranged at the position of a finished adjusting hole consisting of an upper adjusting hole and a lower adjusting hole, and the adjusting length of the thread of the pressing rod (3) is more than or equal to the distance between equidistant concentric circles on the bottom plate.
2. The stepless pitch clamp according to claim 1, wherein: three groups of adjusting hole groups are annularly distributed on the bottom plate (4), each adjusting hole group consists of more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of the concentric circle system, each circumferential hole group consists of two lower adjusting holes, and the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the two adjacent groups of adjusting hole groups is 120 degrees.
3. The stepless pitch clamp according to claim 1, wherein: four groups of adjusting hole groups are distributed on the bottom plate (4), each adjusting hole group is composed of more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of the concentric circle system, each circumferential hole group is composed of two lower adjusting holes, and the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the two adjacent groups of adjusting hole groups is 90 degrees.
4. The stepless pitch clamp according to claim 1, wherein: six groups of adjusting hole groups are distributed on the bottom plate (4) and comprise four groups of adjusting hole groups I and two groups of adjusting hole groups II, wherein the adjusting hole groups I and the adjusting hole groups II are respectively composed of more than two groups of circumferential hole groups which are sequentially arranged on the circumference of each concentric circle of the concentric circle system, each circumferential hole group is composed of two lower adjusting holes, the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the adjacent two groups of adjusting hole groups in the four groups of adjusting hole groups I is 90 degrees, the included angle between the vertical bisectors of the central connecting lines of the two lower adjusting holes of the circumferential hole groups in the two groups of adjusting hole groups II is 120 degrees, an included angle between a vertical bisector of a connecting line of the centers of the two lower adjusting holes of the circumferential hole group in any one group of adjusting hole groups II and a vertical bisector of a connecting line of the centers of the two lower adjusting holes of the circumferential hole group in one group of adjusting hole groups I in the four groups of adjusting hole groups I is 120 degrees.
5. The stepless pitch clamp according to claim 1, wherein: the supporting block (2) is of an L-shaped bending structure.
6. The stepless pitch clamp according to claim 1, wherein: the radius range of the concentric circles in the concentric circle system is 60mm-400 mm.
7. The stepless pitch clamp according to claim 1, wherein: the lower adjusting hole is a countersunk head threaded hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922372302.2U CN211760947U (en) | 2019-12-26 | 2019-12-26 | Stepless variable-pitch clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922372302.2U CN211760947U (en) | 2019-12-26 | 2019-12-26 | Stepless variable-pitch clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211760947U true CN211760947U (en) | 2020-10-27 |
Family
ID=72979451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922372302.2U Active CN211760947U (en) | 2019-12-26 | 2019-12-26 | Stepless variable-pitch clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211760947U (en) |
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2019
- 2019-12-26 CN CN201922372302.2U patent/CN211760947U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A stepless distance changing fixture Effective date of registration: 20220623 Granted publication date: 20201027 Pledgee: Bank of China Limited Xiangyang Branch Pledgor: XINXING HEAVY INDUSTRY HUBEI 3611 MECHANICAL Co.,Ltd. Registration number: Y2022980008672 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230926 Granted publication date: 20201027 Pledgee: Bank of China Limited Xiangyang Branch Pledgor: XINXING HEAVY INDUSTRY HUBEI 3611 MECHANICAL Co.,Ltd. Registration number: Y2022980008672 |