CN219608650U

CN219608650U - Fracture torque test fixture

Info

Publication number: CN219608650U
Application number: CN202320254733.2U
Authority: CN
Inventors: 孔庆俊; 高腾; 黎建波; 阎磊
Original assignee: Unitech Chongqing Medical Technology Co ltd
Current assignee: Unitech Chongqing Medical Technology Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-08-29
Anticipated expiration: 2033-02-20

Abstract

The utility model relates to the field of test tools, in particular to a breaking torque test tool, which comprises a first assembly block and a second assembly block, wherein the first assembly block is provided with a first assembly hole along the axial direction, the second assembly block is provided with a second assembly hole along the axial direction, the first assembly block is abutted with the side wall of the second assembly, the first assembly hole and the second assembly hole form a tool inner cavity, and the inner wall of the tool inner cavity is provided with an inner thread which is used for being in threaded fit with an outer thread of a screw to be tested. The utility model solves the problem that the extrusion deformation of the screw to be tested influences the experimental result in the testing process.

Description

Fracture torque test fixture

Technical Field

The utility model relates to the field of test tools, in particular to a break torque test tool.

Background

Currently, tendon ligament fastening systems generally include products such as suture anchors, tendon ligament fastening screws, and the like, usually nail-shaped implants, made of metal, polymer or other materials, and main mechanical performance indexes of tendon ligament fastening systems include: screw-in torque, breaking torque, fixation strength, etc.

In the related art, the test device for testing the screwing torque and the fixing strength is relatively easy to prepare, and compared with an anchor nail or tendon ligament fixing screw made of a high polymer material, the method for testing the breaking torque is more severe, and the screw needs to be inserted into a jaw of a test machine and locked, so that the clamping part cannot be loosened.

Aiming at the related technology, the hardness of the high polymer material is softer than that of the metal material, the traditional breaking torque test adopts a jaw clamping screw of a testing machine, and the jaw and the screw are in line contact, so that stress concentration is easy to cause, and therefore, the screw extrusion deformation exists in the clamping process, or the loosening of the clamping part occurs in the testing process, so that the experimental result is influenced.

Disclosure of Invention

In order to solve the problem that the extrusion deformation of a screw to be tested affects the experimental result in the testing process, the utility model provides a fracture torque testing tool.

The utility model provides a fracture torque testing tool which adopts the following technical scheme:

the utility model provides a fracture torque test fixture, includes first assembly piece and second assembly piece, first assembly hole has been seted up along the axial to first assembly piece, the second assembly hole has been seted up along the axial to second assembly piece, first assembly piece with the lateral wall butt of second assembly, first assembly hole with the second assembly hole forms the frock inner chamber, be provided with the internal thread on the inner wall of frock inner chamber, the internal thread is used for carrying out screw-thread fit with the external screw thread of screw that awaits measuring.

Through adopting above-mentioned technical scheme, at the in-process that carries out the frock to the screw that awaits measuring, place the screw that awaits measuring in the frock inner chamber, and carry out screw-thread fit with the frock inner chamber, make the mode that the centre gripping awaits measuring the screw change into the face contact by the line contact, make the screw atress that awaits measuring more even, thereby reduce the screw extrusion deformation in the testing process influence the condition of experimental result.

Preferably, the second assembly block is provided with a clamping block along the axial direction of the second assembly hole, the second assembly hole is formed in the side wall of the clamping block, and the clamping block is slidably connected to the second assembly block along the axial direction of the second assembly block.

Through adopting above-mentioned technical scheme, at the in-process of installation screw that awaits measuring, the grip block can adapt to the screw thread that awaits measuring, and when the inner wall of second pilot hole and screw contact, the grip block slides and makes the internal thread on the second pilot hole correspond with the screw thread on the screw surface that awaits measuring automatically, then the clamping of the screw application of force that awaits measuring to reduce the installation and damage the condition of screw that awaits measuring, further improve the condition that influences the experimental result because of the screw warp.

Preferably, a sliding groove is axially formed in the side wall of the clamping block, a sliding block is arranged on the second assembly block, and the sliding block is located in the sliding groove.

Through adopting above-mentioned technical scheme, simple structure, and can slide fast when the centre gripping, adjustment grip block position reduces the wearing and tearing of the screw that awaits measuring.

Preferably, the sliding block is wedge-shaped.

By adopting the technical scheme, the clamping block can be connected to the second assembly body.

Preferably, the terminal surface that the fixed column was kept away from to the grip block is provided with first locking groove, the terminal surface that the second assembly piece is close to the grip block is provided with the second locking groove, first locking groove with the side symmetry setting of grip block is followed to the second locking groove, and the opening corresponds, be provided with the locking piece in first locking groove and the second locking groove, the inner wall butt of locking piece and first locking groove and second locking groove.

Through adopting above-mentioned technical scheme, at the in-process of test, the locking piece can be fixed grip block and second assembly piece, and the condition that the grip block removes and produces the influence to the experimental result when reducing the test.

Preferably, the side wall of the second assembly block, which is close to the end part of the clamping block, is provided with a rebound spring, one end of the rebound spring is abutted against the inner wall of the rebound hole, and the other end of the rebound spring is abutted against the side wall of the clamping block.

Through adopting above-mentioned technical scheme, rebound spring can make the grip block correspond the process of the screw adjustment that awaits measuring more sensitive, can make the grip block return fast after the adjustment simultaneously.

Preferably, the first assembly block is provided with a fixing column, the second assembly block is provided with a fixing hole, the fixing column is located in the fixing hole, and the outer wall of the fixing column is abutted to the inner wall of the fixing hole.

Through adopting above-mentioned technical scheme, can make first assembly piece and the inseparable butt of second assembly piece for first pilot hole and second pilot hole side are accurate to be corresponding, thereby make the frock inner chamber with the accurate centre gripping of screw thread that awaits measuring.

Preferably, the fixing column is a conical column.

By adopting the technical scheme, the connection process of the first assembly block and the second assembly block can be faster and more accurate.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. according to the utility model, the cavity and the internal thread of the tool are arranged, so that the screw to be tested is placed in the inner cavity of the tool in the process of carrying out the tool on the screw to be tested, and is in threaded fit with the inner cavity of the tool, so that the mode of clamping the screw to be tested is changed from line contact to surface contact, the stress of the screw to be tested is more uniform, and the condition that the screw is extruded and deformed in the test process so as to influence the experimental result is reduced;

2. according to the utility model, the clamping blocks are arranged, so that the clamping blocks can adapt to the screw threads of the screw to be tested in the process of installing the screw to be tested, when the inner wall of the second assembly hole is in contact with the screw, the clamping blocks slide to enable the internal threads on the second assembly hole to automatically correspond to the screw threads on the surface of the screw to be tested, and then the screw to be tested is clamped by applying force, thereby reducing the condition that the screw to be tested is damaged in the installation process, and further improving the condition that the experimental result is influenced due to the deformation of the screw;

3. according to the utility model, the locking block is arranged, so that the clamping block can be fixed with the second assembly block in the test process, and the condition that the movement of the clamping block affects the experimental result in the test process is reduced.

Drawings

Fig. 1 is a schematic overall structure of a breaking torque testing tool according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of embodiment 2 of the present utility model.

Fig. 3 is a schematic structural view of a clamping block according to embodiment 2 of the present utility model.

Reference numerals illustrate: 1. a first assembly block; 11. a first fitting hole; 12. an internal thread; 13. fixing the column; 2. a second assembly block; 21. a second fitting hole; 22. a fixing hole; 23. a clamping block; 231. a chute; 232. a first locking groove; 24. a slide block; 25. a rebound hole; 26. a rebound spring; 27. a second locking groove; 28. a locking block; 29. and (5) installing a block.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

Example 1

The embodiment of the utility model discloses a fracture torque testing tool. Referring to fig. 1, the breaking torque testing tool comprises a first assembling block 1 and a second assembling block 2, wherein the first assembling block 1 and the second assembling block 2 are semi-cylindrical, and the outer contour of the combined parts is cylindrical, so that jaws of a testing machine can be clamped conveniently, and the probability of loosening clamping parts in the testing process is reduced.

Referring to fig. 1, a first assembly hole 11 is axially formed in a first assembly block 1, a second assembly hole 21 is axially formed in a second assembly block 2, the first assembly block 1 is abutted to the side wall of the second assembly block 2, so that a tool cavity is formed by the first assembly hole 11 and the second assembly hole 21, internal threads 12 are formed in the inner walls of the first assembly hole 11 and the second assembly hole 21, the first assembly hole 11 corresponds to the internal threads 12 formed in the second assembly hole 21, external threads of a screw to be tested correspond to the external threads of the screw to be tested in the process of performing tool on the screw to be tested, the contact area between the external threads of the screw to be tested is increased, and meanwhile, the damage to the screw to be tested before testing is reduced.

Referring to fig. 1, fixing columns 13 are disposed on the side walls of the first assembly block 1, the fixing columns 13 are disposed on two sides of the first assembly hole 11, fixing holes 22 are formed in the second assembly hole 21 corresponding to the fixing columns 13, and the fixing columns 13 are located in the fixing holes 22, so that the first assembly block 1 and the second assembly block 2 are tightly abutted, and clamping capacity of screws to be tested is increased.

The implementation principle of the breaking torque testing tool provided by the embodiment of the utility model is as follows: when the assembly to be tested is clamped, firstly, the screw to be tested corresponds to the internal thread 12 in the first assembly hole 11 and is placed in the first assembly hole 11, then the fixing hole 22 on the second assembly block 2 corresponds to the fixing column 13, the internal thread 12 in the second assembly hole 21 corresponds to the screw to be tested, the first assembly block 1 of the second assembly block 2 is abutted to the inner wall of the tool cavity, the test tool is clamped on the testing machine, multidirectional limiting of the screw to be tested can be achieved, and as the structure of the inner cavity is consistent with that of the screw, the inner cavity is in surface contact with the screw, the external force applied to the screw is more uniform, and therefore the probability of the screw being extruded and deformed is reduced.

Example 2

Referring to fig. 2 and 3, the difference between the present embodiment and embodiment 1 is that the second assembly block 2 is provided with a clamping block 23 along the axial direction, a sliding groove 231 is axially provided on the side wall of the clamping block 23, a sliding block 24 is correspondingly provided on the side wall of the second assembly block 2 close to the clamping block 23, the sliding block 24 is provided with a wedge shape, the sliding block 24 is located in the sliding groove 231 and is abutted with the inner wall of the sliding block 24, so that the internal thread 12 in the second assembly hole 21 can quickly correspond to the outer surface of the screw to be tested, and meanwhile, the clamping block 23 is firmly connected to the second assembly block 2; the side wall of the second assembly hole 21, which is close to the end part of the clamping block 23, is provided with a rebound hole 25, a rebound spring 26 is fixedly connected in the rebound hole 25, one end of the rebound spring 26 is connected with the inner wall of the rebound hole 25, the other end of the rebound spring 26 is abutted with the side wall of the clamping block 23, and the rebound spring 26 can quickly reset after being adjusted by the clamping block 23 and is abutted with the first assembly block 1 so as to effectively clamp a screw to be tested.

Referring to fig. 2, the end face of the clamping block 23 far away from the rebound spring 26 is clamped with a first locking groove 232, the end face of the second assembly block 2 close to the clamping block 23 is provided with a second locking groove 27, the first locking groove 232 and the second locking groove 27 are mutually communicated, a locking block 28 is arranged in the first locking groove 232 and the second locking groove 27, the outer wall of the locking block 28 is abutted with the inner walls of the first locking groove 232 and the second locking groove 27, the end part of the locking block 28 far away from the clamping block 23 is fixedly connected with a mounting block 29, the mounting block 29 can facilitate the locking block 28 to be assembled or disassembled from the inside of the first locking groove 232 and the second locking groove 27 quickly, the locking block 28 can fix the clamping block 23 on the second assembly block 2, the situation that the clamping block 23 moves in the testing process is reduced, and experimental results are affected is reduced.

Referring to fig. 2, the fixing column 13 is a conical column, and can rapidly correspond to the fixing hole 22 in the assembly process, so that the connection process of the first assembly block 1 and the second assembly block 2 is faster and more accurate.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a fracture torque test fixture, includes first assembly piece (1) and second assembly piece (2), its characterized in that: first assembly hole (11) have been seted up along the axial to first assembly piece (1), second assembly hole (21) have been seted up along the axial to second assembly piece (2), first assembly piece (1) with the lateral wall butt of second assembly, first assembly hole (11) with second assembly hole (21) form the frock inner chamber, be provided with internal thread (12) on the inner wall of frock inner chamber, internal thread (12) are used for carrying out screw-thread fit with the external screw thread of awaiting measuring the screw.

2. The breaking torque testing tool according to claim 1, wherein: the second assembly block (2) is provided with a clamping block (23) along the axial direction of the second assembly hole (21), the second assembly hole (21) is arranged on the side wall of the clamping block (23), and the clamping block (23) is connected to the second assembly block (2) in a sliding manner along the axial direction of the second assembly block (2).

3. The breaking torque testing tool according to claim 2, wherein: a sliding groove (231) is formed in the side wall of the clamping block (23) along the axial direction, a sliding block (24) is arranged on the second assembly block (2), and the sliding block (24) is located in the sliding groove (231).

4. A breaking torque testing tool according to claim 3, wherein: the slider (24) is wedge-shaped.

5. The breaking torque testing tool according to claim 2, wherein: the clamping block (23) is provided with first locking groove (232) away from the terminal surface of fixed column (13), the terminal surface that second assembly piece (2) is close to clamping block (23) is provided with second locking groove (27), first locking groove (232) with side symmetry setting along clamping block (23) of second locking groove (27), and the opening corresponds, be provided with locking piece (28) in first locking groove (232) and second locking groove (27), the inner wall butt of locking piece (28) and first locking groove (232) and second locking groove (27).

6. The breaking torque testing tool according to claim 2, wherein: the second assembly block (2) is close to the side wall of grip block (23) tip and has seted up rebound hole (25), be provided with rebound spring (26) in rebound hole (25), the one end and the inner wall butt of rebound hole (25) of rebound spring (26), the other end and the lateral wall butt of grip block (23) of rebound spring (26).

7. The breaking torque testing tool according to claim 1, wherein: the fixing device is characterized in that a fixing column (13) is arranged on the first assembly block (1), a fixing hole (22) is formed in the second assembly block (2), the fixing column (13) is located in the fixing hole (22), and the outer wall of the fixing column (13) is in butt joint with the inner wall of the fixing hole (22).

8. The breaking torque testing tool according to claim 7, wherein: the fixed column (13) is a conical column.