CN204640024U - A kind of bolt fatigue test clamping device and centering tooling thereof - Google Patents
A kind of bolt fatigue test clamping device and centering tooling thereof Download PDFInfo
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- CN204640024U CN204640024U CN201520331461.7U CN201520331461U CN204640024U CN 204640024 U CN204640024 U CN 204640024U CN 201520331461 U CN201520331461 U CN 201520331461U CN 204640024 U CN204640024 U CN 204640024U
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- arc spacer
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Abstract
The utility model relates to bolt fatigue test clamping device and centering tooling thereof, left arc spacer between the hole wall of boring a hole for the screw rod of the polished rod section and corresponding upper fixture that are plugged in bolt to be tested in use that the centering tooling of bolt fatigue test clamping device comprises that axis extends along the vertical direction and right arc spacer, left and right arc spacer has the consistent periphery cambered surface in aperture that the diameter inner circumferential cambered surface consistent with described polished rod section external diameter and diameter and described screw rod bore a hole.The utility model provides a kind of bolt fatigue test clamping device that can ensure the centering tooling that the bolt penetration hole on bolt and upper fixture is coaxially set and use this centering tooling.
Description
Technical field
The utility model relates to clamping device and the centering tooling thereof of bolt fatigue test.
Background technology
Along with greatly developing of field of aerospace in recent years, increasing special process bolt is used in field of aerospace, and be mainly used in the core components such as engine, because the bolt of this type of special process is different from General fasteners in size and test requirements document, causing test difficulty to increase, there is certain error in result of the test.Existing this special bolts is as shown in Figure 1: comprise the screw rod that axis extends along the vertical direction and the head 10 being arranged at screw rod upper end, screw rod comprises polished rod section 11 setting up and down and thread segment 12, the external diameter of thread segment is greater than the external diameter of polished rod section, by clamping device, bolt is connected on testing machine when actual tests, clamping device comprises fixture and lower clamp, lower clamp is provided with the screwed hole coordinated with thread segment, upper fixture is provided with the screw rod be coaxially set with screwed hole to bore a hole, the polished rod section of screw rod is arranged in screw rod perforation, the head of screw rod is positioned at the upside of screw rod perforation, by upper, lower clamp applies dynamic and static state pulling force along the vertical direction to screw rod, to carry out fatigue test to bolt, existing technical problem is: due to technique needs, the aperture of screw rod perforation needs consistent with the diameter of thread segment, that is the aperture of screw rod perforation can be greater than the diameter of polished rod section, this just causes bolt may depart from the axis of bolt penetration hole when assembling, the axis of bolt cannot be ensured along the vertical direction, testing machine may have component in the horizontal direction to the loading force of bolt, easily cause result of the test inaccurate, in addition the connecting portion of head and polished rod section belongs to the easy concentrated area of stress, if cause fixture to contact with the connecting portion of head with polished rod section because of screw rod deflection, can seriously cause the inaccurate of result of the test.
Utility model content
The purpose of this utility model is to provide a kind of centering tooling that the bolt penetration hole on bolt and upper fixture is coaxially set that can ensure; The purpose of this utility model is also to provide a kind of bolt fatigue test clamping device using this centering tooling.
In order to solve the problem, in the utility model, the technical scheme of centering tooling is: the centering tooling of bolt fatigue test clamping device, left arc spacer between the hole wall of boring a hole for the screw rod of the polished rod section and corresponding upper fixture that are plugged in bolt to be tested in use comprising that axis extends along the vertical direction and right arc spacer, left and right arc spacer has the consistent periphery cambered surface in aperture that the diameter inner circumferential cambered surface consistent with described polished rod section external diameter and diameter and described screw rod bore a hole.
The lower end of left arc spacer is provided with left outside turning edge, and the lower end of right arc spacer is provided with right outside turning edge.
Left and right outer turn edge on be symmetrically arranged with the screwed hole that turns edge be arranged in parallel of boring a hole with screw rod.
In the utility model, the technical scheme of bolt fatigue test clamping device is:
Bolt fatigue test clamping device, comprise fixture, the screw rod perforation that the polished rod section upper fixture being provided with the corresponding bolt to be tested of confession that axis extends along the vertical direction is passed, the aperture of screw rod perforation is greater than the diameter of described polished rod section, bolt fatigue test clamping device also comprises centering tooling, centering tooling comprise that axis extends along the vertical direction for being plugged in left arc spacer between hole wall that described polished rod section and screw rod bore a hole and right arc spacer, left, right arc spacer has the consistent periphery cambered surface in aperture that the diameter inner circumferential cambered surface consistent with polished rod section external diameter and diameter and screw rod bore a hole.
The lower end of left arc spacer is provided with left outside turning edge, and the lower end of right arc spacer is provided with right outside turning edge.
Left and right outer turn edge on be symmetrically arranged with the screwed hole that turns edge be arranged in parallel of bore a hole with screw rod, be installed with the force screw rod that confession operating personnel are hand-held in the screwed hole that turns edge.
The beneficial effects of the utility model are: the polished rod section of bolt to be tested be arranged in the screw rod perforation of upper fixture during use, by a left side, right arc spacer be plugged in polished rod section and screw rod bore a hole between gap in, due to a left side, the diameter of the inner circumferential cambered surface of right arc spacer is consistent with the external diameter of polished rod section, left, the diameter of the periphery cambered surface of right arc spacer is consistent with the internal diameter that screw rod is bored a hole, therefore on a left side, right arc spacer be plugged in polished rod section and screw rod bore a hole between after, polished rod section is just bored a hole with screw rod and is coaxially set, then apply certain pulling force to bolt to preload, the head of bolt is just fixed on fixture, take off a left side, right arc spacer can carry out fatigue test to bolt.
Accompanying drawing explanation
Fig. 1 is the structural representation of bolt in the utility model background technology;
Fig. 2 is the using state figure of an embodiment of bolt fatigue test clamping device in the utility model;
Fig. 3 is structural representation when lacking bolt and centering tooling in Fig. 2;
Fig. 4 is the structural representation of right arc spacer in Fig. 2.
Detailed description of the invention
The embodiment of bolt fatigue test clamping device is as shown in Fig. 2 ~ 4: comprise upper fixture 2 and lower clamp 6, lower clamp offers the screwed hole of centre for thread segment 5 threaded engagement with bolt to be tested that axis extends along the vertical direction, upper fixture is provided with the screw rod be coaxially set with screwed hole of centre and bores a hole 7, the aperture of screw rod perforation 7 is greater than the diameter of the polished rod section 3 of bolt to be tested.Bolt fatigue test clamping device also comprises centering tooling, centering tooling comprise that axis extends along the vertical direction for being plugged in left arc spacer 4 between hole wall that polished rod section and screw rod bore a hole and right arc spacer 14, left and right arc spacer split is arranged, left and right arc spacer have the diameter inner circumferential cambered surface consistent with polished rod section 3 external diameter and diameter and screw rod bore a hole 7 the consistent periphery cambered surface in aperture, the lower end of left arc spacer is provided with left outside turning edge, and the lower end of right arc spacer is provided with right outside turning edge.Be symmetrically arranged with the turn edge screwed hole 8 parallel with screwed hole of centre on turning edge outside left and right, be installed with in the screwed hole that turns edge for the hand-held force screw rod of operating personnel.Figure middle term 1 represents the head of bolt to be tested.
During use, the screw rod of bolt to be tested passes in from top to bottom being bored a hole by screw rod, make the thread segment spinning of bolt to be tested in the screwed hole of centre of lower clamp, left, right arc spacer is placed in the left and right sides of polished rod section, by to force screw rod by a left side, right arc spacer push from the bottom to top polished rod section and screw rod bore a hole between gap in, due to a left side, the positioning action of right arc spacer, the polished rod section of bolt to be tested and screw rod are bored a hole and are coaxially set, then certain preloading is applied to bolt to be tested, the head of bolt to be tested is just fixed on fixture, and the polished rod section of bolt to be tested and bolt penetration hole are coaxially set, left, right outside turning edge can conveniently exert a force on the one hand, a left side can also be prevented on the other hand, the transition of right arc spacer is encased in screw rod perforation, then a left side is taken out downwards by force screw rod, right arc spacer, fatigue test can be carried out to bolt to be tested, due to operating space restriction, cause staff inconvenient directly to a left side, right arc spacer force, force screw rod can facilitate staff to exert a force, convenient left, the installation and removal of right arc spacer.
In other embodiment of this bolt fatigue test clamping device, left and right outer turning edge also can not be established, and now operating personnel can directly to left and right arc spacer force.
The embodiment of centering tooling is as shown in Fig. 2 ~ 4: the concrete structure of centering tooling is identical with the centering tooling described in above-mentioned each bolt fatigue test clamping device embodiment, is not described in detail in this.
Claims (6)
1. the centering tooling of bolt fatigue test clamping device, it is characterized in that: the left arc spacer between the hole wall of boring a hole for the screw rod of the polished rod section and corresponding upper fixture that are plugged in bolt to be tested in use comprising that axis extends along the vertical direction and right arc spacer, left and right arc spacer has the consistent periphery cambered surface in aperture that the diameter inner circumferential cambered surface consistent with described polished rod section external diameter and diameter and described screw rod bore a hole.
2. centering tooling according to claim 1, is characterized in that: the lower end of left arc spacer is provided with left outside turning edge, and the lower end of right arc spacer is provided with right outside turning edge.
3. centering tooling according to claim 2, is characterized in that: left and right outer turn edge on be symmetrically arranged with the screwed hole that turns edge be arranged in parallel of boring a hole with screw rod.
4. bolt fatigue test clamping device, comprise fixture, the screw rod perforation that the polished rod section upper fixture being provided with the corresponding bolt to be tested of confession that axis extends along the vertical direction is passed, the aperture of screw rod perforation is greater than the diameter of described polished rod section, it is characterized in that: bolt fatigue test clamping device also comprises centering tooling, centering tooling comprise that axis extends along the vertical direction for being plugged in left arc spacer between hole wall that described polished rod section and screw rod bore a hole and right arc spacer, left, right arc spacer has the consistent periphery cambered surface in aperture that the diameter inner circumferential cambered surface consistent with polished rod section external diameter and diameter and screw rod bore a hole.
5. bolt fatigue test clamping device according to claim 4, it is characterized in that: the lower end of left arc spacer is provided with left outside turning edge, the lower end of right arc spacer is provided with right outside turning edge.
6. bolt fatigue test clamping device according to claim 5, is characterized in that: left and right outer turn edge on be symmetrically arranged with the screwed hole that turns edge be arranged in parallel of bore a hole with screw rod, be installed with the force screw rod that confession operating personnel are hand-held in the screwed hole that turns edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331461.7U CN204640024U (en) | 2015-05-21 | 2015-05-21 | A kind of bolt fatigue test clamping device and centering tooling thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331461.7U CN204640024U (en) | 2015-05-21 | 2015-05-21 | A kind of bolt fatigue test clamping device and centering tooling thereof |
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| Publication Number | Publication Date |
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| CN204640024U true CN204640024U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520331461.7U Active CN204640024U (en) | 2015-05-21 | 2015-05-21 | A kind of bolt fatigue test clamping device and centering tooling thereof |
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| CN (1) | CN204640024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827423A (en) * | 2015-05-21 | 2015-08-12 | 河南航天精工制造有限公司 | Bolt fatigue test clamping device and centering tool thereof |
-
2015
- 2015-05-21 CN CN201520331461.7U patent/CN204640024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827423A (en) * | 2015-05-21 | 2015-08-12 | 河南航天精工制造有限公司 | Bolt fatigue test clamping device and centering tool thereof |
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