Tool for grinding inner hole of thin-wall part
By designing a tooling fixture for grinding inner holes of thin-walled parts, and utilizing the concentric connection of the support, fixture and connecting sleeve, combined with the positioning block and threaded hole, the shortcomings of existing grinding tooling in radial and axial runout correction are solved, achieving the effects of high-precision machining and reduced labor intensity.
Patent Information
- Application Number
- CN202520399653.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing grinding fixtures are unable to simultaneously satisfy the correction of radial and axial runout, resulting in insufficient machining accuracy and high labor intensity for workers.
A tooling for grinding internal holes of thin-walled parts was designed, including a support, a fixture and a connecting sleeve. The three are concentrically connected, and the design of the positioning block and threaded hole is combined to achieve precise positioning of the workpiece and avoid runout.
It improves machining accuracy, reduces the labor intensity of workers, extends the service life of tooling, and ensures high-requirement geometric tolerance machining.
Smart Images
Figure CN223790223U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to part grinding technical field, especially a thin wall piece grinding hole frock. BACKGROUND
[0002] The general grinding frock is clamped by three jaw chucks, and the radial and axial two direction runout amounts need to be corrected before processing the workpiece. In the prior art, because the frock is integral, the correction of the frock often cannot simultaneously satisfy the runout amounts of two directions, after correcting one direction, deviation appears in the other direction, for example, "the radial is correct, the axial is deviated", or "the axial is correct, the radial is deviated", the worker often spends much more time than processing products to correct the frock, and the time and effort are wasted, the runout of two directions cannot be simultaneously better guaranteed, and high requirement shape tolerance processing cannot be satisfied. UTILITY MODEL CONTENT
[0003] In view of the technical problems in the background art, the utility model aims at providing a thin wall piece grinding hole frock, which can be positioned more accurately and avoid errors of the workpiece in the processing process.
[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme:
[0005] A thin wall piece grinding hole frock, comprising a supporting piece, a clamping body and a connecting sleeve, the supporting piece is hollow, a workpiece is arranged inside the supporting piece, a three jaw chuck is clamped on the outside of the supporting piece, the clamping body is detachably connected to one end of the supporting piece, the connecting sleeve is detachably connected to one end of the clamping body, the supporting piece, the clamping body and the connecting sleeve are concentrically connected, and the workpiece is arranged inside the frock.
[0006] As a preferred, one end of the supporting piece is provided with a threaded hole I, one end of the clamping body is provided with a threaded hole II, and the threaded hole I and the threaded hole II are aligned.
[0007] As a preferred, a bolt is detachably arranged in the threaded hole II, and the bolt extends into the threaded hole I through the threaded hole II.
[0008] As a preferred, one end of the clamping body is provided with a threaded segment, and a thread matched with the threaded segment is arranged on the inner wall of the connecting sleeve.
[0009] As a preferred, a plurality of holes for connecting with crescent spanners are arranged on the outer wall of the connecting sleeve.
[0010] As a preferred, a plurality of grooves are arranged on the supporting piece, a positioning assembly is arranged in the groove, the positioning assembly comprises a positioning block, a clamping groove is arranged on the positioning block, and the three jaw chuck is connected at the clamping groove position.
[0011] Preferably, the positioning block is provided with protrusions on two sides, the support is provided with limiting grooves, the limiting grooves are arranged on two sides of the groove and communicate with the groove, and the protrusions are connected in the limiting grooves.
[0012] The utility model has the advantages and beneficial effects that:
[0013] In the utility model, the positioning block is detachably arranged on the support, the three-jaw chuck directly contacts the positioning block, the positioning block can be directly removed and replaced when the positioning block is worn, the structure of the tooling is greatly protected, the service life of the tooling is increased, the claws of the three-jaw chuck can extend into the positioning block, axial jumping of the part during machining is greatly avoided, the support, the clamping body and the connecting sleeve are concentrically connected, the workpiece is arranged in the tooling, radial jumping of the workpiece during machining is greatly avoided, the machining precision is greatly improved, and the labor intensity of workers is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 The utility model provides a kind of three-dimensional drawing of the grinding inner hole tooling of thin-walled part.
[0015] Fig. 2 The utility model provides an explosion view of the grinding inner hole tooling of thin-walled part.
[0016] Fig. 3 The utility model provides a kind of sectional view of the grinding inner hole tooling of thin-walled part.
[0017] Reference signs: 2-support, 21-thread hole I, 22-groove, 23-limiting groove, 3-clamping body, 31-thread hole II, 32-thread segment, 4-connecting sleeve, 41-hole, 42-thread, 5-positioning block, 51-protrusion, 52-clamping slot. DETAILED DESCRIPTION
[0018] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments.
[0019] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.
[0020] EMBODIMENT
[0021] AsFigs. 1-3 As shown, a tooling for grinding inner holes of thin-walled parts includes a support member 2, a clamping body 3, and a connecting sleeve 4. The support member 2 is hollow, and the workpiece is placed inside the support member 2. The support member 2 is clamped by a three-jaw chuck. The support member 2 is provided with a plurality of grooves 22, and a positioning component is provided in the grooves 22. The positioning component includes a positioning block 5, and a slot 52 is provided on the positioning block 5. The three-jaw chuck is adjusted so that the jaws are connected to the slot 52. Protrusions 51 are provided on both sides of the positioning block 5. The support member 2 is provided with a limiting groove 23, which is located on both sides of the groove 22 and communicates with the groove 22. The protrusions 51 are connected to the groove 22. Within the limiting groove 23, the positioning block 5 is connected within the groove 22. The three-jaw chuck is connected to the positioning block 5. Since the tooling is subjected to a large force when the three-jaw chuck is clamping, the tooling is prone to damage after long-term use. After setting the positioning block 5, the three-jaw chuck directly contacts the positioning block 5. When the positioning block 5 is worn, it can be directly removed and replaced. At the same time, protrusions 51 are set on both sides of the positioning block 5 to strengthen the connection between the positioning block 5 and the support 2, and to prevent the positioning block 5 from sliding during clamping. The positioning block 5 can maximize the accuracy and stability of the three-jaw chuck when clamping, and greatly avoid the axial runout of the parts during processing.
[0022] like Figs. 1-3 As shown, the clamp body 3 is detachably connected to one end of the support member 2. The clamp body 3 is sleeved on the support member 2, and one end of the support member 2 protrudes to facilitate a stable connection with the clamp body 3. One end of the support member 2 is provided with a threaded hole I 21, and one end of the clamp body 3 is provided with a threaded hole II 31. The threaded holes I 21 and II 31 are aligned. A bolt is detachably installed in the threaded hole II 31. The bolt passes through the threaded hole II 31 and extends into the threaded hole I 21. When the threaded holes I 21 and II 31 are aligned, the radial runout of the inner hole can be corrected. The connecting sleeve 4 is detachably connected to one end of the clamp body 3. One end of the clamp body 3 is provided with a threaded section 32. The inner wall of the connecting sleeve 4 is provided with a thread 42 that mates with the threaded section 32. The outer wall of the connecting sleeve 4... The upper part is provided with several holes 41 for connecting with a crescent wrench. The crescent wrench is inserted into the hole 41, and rotating the crescent wrench can connect the connecting sleeve 4 to the clamp body 3, which facilitates the connection between the clamp body 3 and the connecting sleeve 4, and also facilitates the separation of the connecting sleeve 4 and the clamp body 3. The support 2, the clamp body 3 and the connecting sleeve 4 are concentrically connected. The workpiece is first inserted into the support body 2 and supported inside the support body 2. Then the clamp body 3 is connected to the support body 2, so that the clamp body 3 is sleeved on the outside of the workpiece. Finally, the connecting sleeve 4 is installed at one end of the clamp body 3. The workpiece passes through the support 2, the clamp body 3 and the connecting sleeve 4 at the same time, which greatly avoids radial runout of the workpiece during the processing, greatly improves the processing accuracy and reduces the labor intensity of the workers.
[0023] The above merely is preferred embodiment of the present utility model, and does not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model, should include in the protection scope of the present utility model.
Claims
1. A thin-walled part grinding inner hole tool, characterized in that, The utility model provides a workpiece clamping device, including support, clamping body and connecting sleeve, the support is hollow, workpiece sets up in support inside, the outside of support clamps three jaw chucks, the clamping body can be detachably connected in one end of support, the connecting sleeve can be detachably connected in one end of clamping body, support, clamping body and connecting sleeve concentric connection, workpiece sets up in tool inside.
2. The grinding jig for thin-walled inner hole according to claim 1, wherein One end of the support is provided with a threaded hole I, one end of the clamping body is provided with a threaded hole II, the threaded hole I and the threaded hole II are aligned.
3. The grinding jig for thin-walled inner hole according to claim 2, wherein A bolt is detachably arranged in the threaded hole II, the bolt extends into the threaded hole I through the threaded hole II to connect the clamping body and the support.
4. The grinding jig for thin-walled inner hole according to claim 1, characterized in that, One end of the clamping body is provided with a threaded section, and a thread matched with the threaded section is arranged on the inner wall of the connecting sleeve.
5. The grinding jig for thin-walled inner hole according to claim 1, wherein A plurality of holes for connecting with a crescent wrench are arranged on the outer wall of the connecting sleeve.
6. The grinding jig for thin-walled inner hole according to claim 1, wherein A plurality of recesses are uniformly distributed on the circumference of the support, a positioning assembly is arranged in the recess, the positioning assembly comprises a positioning block, a clamping groove is arranged on the positioning block, and the three-jaw chuck is connected at the clamping groove position.
7. The grinding jig for thin-walled inner hole according to claim 6, wherein Protrusions are arranged on both sides of the positioning block, limit grooves are arranged on the support, the limit grooves are arranged on both sides of the recess and communicate with the recess, and the protrusions are connected in the limit grooves.