CN212121708U - Self-centering and tensioning type clamp - Google Patents
Self-centering and tensioning type clamp Download PDFInfo
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- CN212121708U CN212121708U CN202020718557.XU CN202020718557U CN212121708U CN 212121708 U CN212121708 U CN 212121708U CN 202020718557 U CN202020718557 U CN 202020718557U CN 212121708 U CN212121708 U CN 212121708U
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- tensioning
- sliding groove
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- centering
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Abstract
The utility model relates to a from anchor clamps of centering, tight formula that rises. The self-centering and tensioning type clamp comprises a connecting part, a first tensioning sleeve, a second tensioning sleeve and a mandril, wherein one end of the mandril is inserted into a central shaft hole of the connecting part, and the first tensioning sleeve and the second tensioning sleeve are sleeved on the mandril at intervals; the first tensioning sleeve comprises a first elastic sleeve, a first fixing part and a first sliding groove; the second tensioning sleeve comprises a second elastic sleeve, a second fixing part and a second sliding groove; the ejector rod comprises a first sliding block matched with the first sliding groove and a second sliding block matched with the second sliding groove, and the first sliding block and the second sliding block are fixedly connected with the ejector rod respectively. The utility model provides a from the anchor clamps clamping of centering, the tight formula that rises efficient, the clamp is tight reliable, positioning accuracy is high, can avoid anchor clamps to treat the surface of the work piece of processing and cause the damage.
Description
Technical Field
The utility model relates to a machining technology field, concretely relates to from anchor clamps of centering, tight formula that rises.
Background
The aluminum alloy material is widely used for designing and manufacturing aviation parts due to the characteristics of low density and high strength. The tail transmission system of a certain helicopter is provided with an aluminum alloy thin-wall shaft part, the structure and the shape are complex, the wall is thin, the clamping is difficult and easy to deform in the processing process, the precision holes are large, the requirements on the size and the form and position tolerance of an inner cylindrical surface and an outer cylindrical surface are high, and the processing and the measurement of the size of an inner hole are difficult. Therefore, a special clamp is usually needed for processing the aluminum alloy thin-wall part, but the clamping efficiency of the existing clamp is low, the clamping surface is easy to damage after processing, and the processing tolerance of the part is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned technical problem that current anchor clamps clamping inefficiency, processing back clamping surface easily damaged, the utility model provides a from the anchor clamps of centering, the tight formula that rises, the clamping is efficient, press from both sides tight reliable, positioning accuracy height, has guaranteed the processing requirement of thin wall part, can avoid anchor clamps to treat the surface of the work piece of processing simultaneously and cause the damage.
The utility model provides a self-centering and tensioning type clamp, which comprises a connecting part, a first tensioning sleeve, a second tensioning sleeve and a mandril, wherein one end of the mandril is inserted in a central shaft hole of the connecting part, and the first tensioning sleeve and the second tensioning sleeve are arranged on the mandril in a spacing way;
the first tensioning sleeve comprises a first elastic sleeve, a first fixing part and a first sliding groove, the first elastic sleeve is provided with a first central hole for the ejector rod to pass through, the first fixing part is fixedly arranged at one end of the first elastic sleeve far away from the connecting part, the first sliding groove is arranged in the first elastic sleeve along the axial direction of the ejector rod, and the bottom of the first sliding groove is communicated with the top of the first central hole; the depth of the first sliding chute is gradually reduced from one end, close to the connecting part, of the first sliding chute to one end, far away from the connecting part, of the first sliding chute;
the second tensioning sleeve comprises a second elastic sleeve, a second fixing part and a second sliding groove, the second elastic sleeve is provided with a second central hole for the ejector rod to pass through, the second fixing part is fixedly arranged at one end of the second elastic sleeve far away from the connecting part, the second sliding groove is arranged in the second elastic sleeve along the axial direction of the ejector rod, and the bottom of the second sliding groove is communicated with the top of the second central hole; the depth of the second sliding chute is gradually reduced from one end, close to the connecting part, of the second sliding chute to one end, far away from the connecting part, of the second sliding chute;
the ejector rod comprises a first sliding block matched with the first sliding groove and a second sliding block matched with the second sliding groove, and the first sliding block and the second sliding block are fixedly connected with the ejector rod respectively.
In a preferred embodiment of the self-centering and tensioning clamp of the present invention, the axis of the first center hole and the axis of the second center hole coincide with the axis of the rod.
The utility model provides a from a preferred embodiment of centering, tight formula of rising anchor clamps, from centering, tight formula of rising anchor clamps still include first locking portion and second locking portion, first locking portion is located first tight cover that rises is close to the one end of connecting portion, second locking portion is located the second tight cover that rises keeps away from the one end of connecting portion that rises.
In a preferred embodiment of the self-centering, tensioning clamp of the present invention, the first locking portion and the second locking portion are both locking nuts.
Compared with the prior art, the utility model provides a from the anchor clamps of centering, the formula that rises has following beneficial effect: through setting up first tight cover that rises, second tight cover that rises and ejector pin, the work piece of treating the processing carries out two location and rises tightly, and clamping efficiency is high, press from both sides tightly reliably, positioning accuracy is high, has guaranteed the processing requirement of thin wall part, can avoid anchor clamps to treat the surface of the work piece of processing to cause the damage simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic view of an assembly structure of a self-centering and tensioning clamp provided by the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1 and fig. 2, wherein fig. 1 is a schematic view of an assembly structure of a self-centering and tensioning clamp according to the present invention; fig. 2 is an enlarged view at a in fig. 1. The self-centering and tensioning type clamp 1 comprises a connecting part 11, a first tensioning sleeve 12, a second tensioning sleeve 13 and a push rod 14, one end of the push rod 14 is inserted into a center shaft hole of the connecting part 11, and the first tensioning sleeve 12 and the second tensioning sleeve 13 are sleeved on the push rod 14 at intervals.
The first tensioning sleeve 12 comprises a first elastic sleeve 121, a first fixing portion 122 and a first sliding groove 123, the first elastic sleeve 121 is provided with a first central hole 1211 through which the ejector rod 14 passes, the first fixing portion 122 is fixedly arranged at one end of the first elastic sleeve 121 far away from the connecting portion 11, the first sliding groove 123 is arranged in the first elastic sleeve 121 along the axial direction of the ejector rod 14, and the bottom of the first sliding groove 123 is communicated with the top of the first central hole 1211; the depth of the first sliding groove 123 gradually decreases from one end of the first sliding groove 123 close to the connecting portion 11 to one end of the first sliding groove 123 far away from the connecting portion 11.
The second tensioning sleeve 13 comprises a second elastic sleeve 131, a second fixing portion 132 and a second sliding groove 133, the second elastic sleeve 131 is sleeved with a second central hole 1311 for the ejector rod 14 to pass through, the second fixing portion 132 is fixedly arranged at one end of the second elastic sleeve 131 far away from the connecting portion 11, the second sliding groove 133 is arranged in the second elastic sleeve 131 along the axial direction of the ejector rod 14, and the bottom of the second sliding groove 133 is communicated with the top of the second central hole 1311; the depth of the second sliding groove 133 gradually decreases from an end of the second sliding groove 133 close to the connecting portion 11 to an end of the second sliding groove 133 far from the connecting portion 11.
The axes of the first central hole 1211 and the second central hole 1311 coincide with the axes of the rod 14, respectively, so that the first elastic sleeve 121 and the second elastic sleeve 131 are kept concentric after expanding, and the processing quality is ensured.
The first elastic sleeve 121 and the second elastic sleeve 131 are respectively provided with a plurality of annularly and uniformly distributed opening gaps, so that the elasticity of the first elastic sleeve 121 and the second elastic sleeve 131 is ensured.
The top bar 14 comprises a first sliding block 141 matched with the first sliding groove 123 and a second sliding block 142 matched with the second sliding groove 133, and the first sliding block 141 and the second sliding block 142 are respectively fixedly connected with the top bar 14.
Through the arrangement of the first sliding groove 123, the first sliding block 141, the second sliding groove 133 and the second sliding block 142, the clamping efficiency and the positioning accuracy of the clamp are high, the processing requirement of thin-wall parts is met, and meanwhile the clamp can be prevented from damaging the surface of a workpiece to be processed.
The self-centering and tensioning type clamp 1 further comprises a first locking portion 15 and a second locking portion 16, the first locking portion 15 is arranged at one end, close to the connecting portion 11, of the first tensioning sleeve 12, and the second locking portion 16 is arranged at one end, far away from the connecting portion 11, of the second tensioning sleeve 13. Preferably, the first locking portion 15 and the second locking portion 16 are both locking nuts. Through setting up first locking portion 15 and second locking portion 16, can guarantee the reliability when the work piece 21 that treats processing is carried out to self-centering, tight formula anchor clamps 1 that rises, guarantee processingquality.
During use, the workpiece 21 to be machined is sleeved on the outer side of the self-centering and tensioning type clamp 1, the ejector rod 14 is pushed, the first slider 141 and the second slider 142 on the ejector rod 14 move forwards along the first sliding groove 121 and the second sliding groove 131 respectively, the first fixing portion 121 and the second fixing portion 131 are expanded, the workpiece 21 to be machined is tensioned, and then the first locking portion 15 and the second locking portion 16 are screwed respectively.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (4)
1. A self-centering and tensioning type clamp is characterized by comprising a connecting part, a first tensioning sleeve, a second tensioning sleeve and a mandril, wherein one end of the mandril is inserted into a central shaft hole of the connecting part, and the first tensioning sleeve and the second tensioning sleeve are sleeved on the mandril at intervals;
the first tensioning sleeve comprises a first elastic sleeve, a first fixing part and a first sliding groove, the first elastic sleeve is provided with a first central hole for the ejector rod to pass through, the first fixing part is fixedly arranged at one end of the first elastic sleeve far away from the connecting part, the first sliding groove is arranged in the first elastic sleeve along the axial direction of the ejector rod, and the bottom of the first sliding groove is communicated with the top of the first central hole; the depth of the first sliding chute is gradually reduced from one end, close to the connecting part, of the first sliding chute to one end, far away from the connecting part, of the first sliding chute;
the second tensioning sleeve comprises a second elastic sleeve, a second fixing part and a second sliding groove, the second elastic sleeve is provided with a second central hole for the ejector rod to pass through, the second fixing part is fixedly arranged at one end of the second elastic sleeve far away from the connecting part, the second sliding groove is arranged in the second elastic sleeve along the axial direction of the ejector rod, and the bottom of the second sliding groove is communicated with the top of the second central hole; the depth of the second sliding chute is gradually reduced from one end, close to the connecting part, of the second sliding chute to one end, far away from the connecting part, of the second sliding chute;
the ejector rod comprises a first sliding block matched with the first sliding groove and a second sliding block matched with the second sliding groove, and the first sliding block and the second sliding block are fixedly connected with the ejector rod respectively.
2. The self-centering, tensioning clamp according to claim 1, wherein the axes of the first and second central bores coincide with the axis of the ram, respectively.
3. The self-centering, self-tensioning clamp according to claim 1, further comprising a first locking portion and a second locking portion, wherein the first locking portion is disposed at an end of the first tensioning sleeve close to the connecting portion, and the second locking portion is disposed at an end of the second tensioning sleeve away from the connecting portion.
4. The self-centering, tensioning clamp of claim 3, wherein the first and second locking portions are each a locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718557.XU CN212121708U (en) | 2020-05-06 | 2020-05-06 | Self-centering and tensioning type clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718557.XU CN212121708U (en) | 2020-05-06 | 2020-05-06 | Self-centering and tensioning type clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212121708U true CN212121708U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020718557.XU Active CN212121708U (en) | 2020-05-06 | 2020-05-06 | Self-centering and tensioning type clamp |
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| Country | Link |
|---|---|
| CN (1) | CN212121708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112828601A (en) * | 2020-12-31 | 2021-05-25 | 长沙中传航空传动有限公司 | Device and method for machining propeller pitch control shaft of tail reducer of helicopter |
-
2020
- 2020-05-06 CN CN202020718557.XU patent/CN212121708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112828601A (en) * | 2020-12-31 | 2021-05-25 | 长沙中传航空传动有限公司 | Device and method for machining propeller pitch control shaft of tail reducer of helicopter |
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