CN222403531U - Special-shaped hole workpiece excircle machining tool - Google Patents
Special-shaped hole workpiece excircle machining tool Download PDFInfo
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- CN222403531U CN222403531U CN202421149303.5U CN202421149303U CN222403531U CN 222403531 U CN222403531 U CN 222403531U CN 202421149303 U CN202421149303 U CN 202421149303U CN 222403531 U CN222403531 U CN 222403531U
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- 238000003754 machining Methods 0.000 title claims abstract description 15
- 230000004323 axial length Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000227 grinding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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Abstract
The tool for machining the excircle of the special-shaped hole workpiece comprises an expansion head, a plug and a nut, wherein the expansion head comprises an expansion sleeve and a shaft sleeve, the plug comprises a cone, a pull rod and a screw rod, the expansion sleeve is coaxially and clearance-matched with the special-shaped hole of the workpiece, an expansion joint is formed in the expansion sleeve, the plug is inserted into the expansion head, the screw rod extends out of the front end of the expansion head, the cone and the expansion sleeve are identical in taper and fit, the screw rod is screwed into the nut, the cone surface outside the cone of the plug continuously extrudes the inner cone surface of the expansion sleeve to expand the expansion sleeve, and the expansion sleeve is in interference fit with the special-shaped part Kong Zhang, so that the workpiece and the tool are coaxially fixed. The utility model has the advantages of simple structure, low cost, simple and quick operation, repeated disassembly and convenient maintenance, can quickly adapt and align workpieces with different special-shaped holes, reduces the processing difficulty, reduces the processing cost and is suitable for popularization.
Description
Technical Field
The utility model belongs to the technical field of work clamping devices of operation conveying machine tools, and particularly relates to a special-shaped hole work piece excircle machining tool.
Background
At present, along with rapid development of the mechanical industry, the precision requirement of processing parts is increasingly improved, and the proportion of processing the excircle of a workpiece by using processes such as grinding, milling and the like in the production process is increased year by year. But all require datum positioning through a central hole of the workpiece to obtain the surface of the part with extremely high dimensional accuracy, position accuracy and surface roughness. However, in such a machining process, the workpiece 4 to be machined is required to have a reliable center hole and a machining allowance. When the workpiece 4 is to be machined by machining the special-shaped hole 401 with one end surface or two end surfaces as shown in fig. 1 and 2, the workpiece 4 is difficult to be centrally positioned on the machine tool. In this regard, the following technical solutions are now proposed.
Disclosure of utility model
The technical problem solved by the utility model is to provide the tool for processing the excircle of the special-shaped hole workpiece, and the technical problem that the special-shaped hole workpiece is difficult to clamp and position on the center of a machine tool is solved.
The technical scheme includes that the tool comprises an expansion head, a plug and a nut, wherein the expansion head comprises an expansion sleeve and a shaft sleeve which are coaxially and integrally formed, the plug comprises a cone body, a pull rod and a screw rod which are coaxially and integrally formed from back to front, the outer part of the expansion sleeve is coaxially and intermittently matched with a special-shaped hole of a workpiece to be machined, an expansion joint is axially formed in the expansion sleeve body, the plug is coaxially inserted into the expansion sleeve and the shaft sleeve of the expansion head, the screw rod of the plug extends out of the front end of the expansion head, the cone surface of the cone body of the plug is identical to the cone surface of the inner cone of the expansion sleeve in a fit mode, the screw rod is screwed into the nut, the plug axially displaces along with the continuous screwing of the nut, the cone surface of the cone body of the plug continuously extrudes the inner cone surface of the expansion sleeve, the expanded expansion sleeve is used for being in interference fit with the special-shaped Kong Zhang of the workpiece, coaxial fixing of the workpiece and the tool is achieved, and the center of the tool is the workpiece center, and the centering clamping of the workpiece is achieved through the tool center.
In the technical scheme, the special-shaped hole is in a strip shape or a D shape, and the expansion sleeve body is in a strip shape or a D shape.
In the technical scheme, as a preferable technical scheme of the utility model, the expansion joints are uniformly distributed along the radial direction of the expansion sleeve body and are provided with at least four channels.
In the technical scheme, as a further improvement of the utility model, a screw central hole is formed in the center of the front end of the screw.
In the technical scheme, the axial length of the expansion sleeve is larger than or equal to that of the special-shaped hole of the workpiece as a preferable technical scheme of the utility model.
According to the technical scheme, as a further improvement, a positioning boss is arranged between the expansion sleeve of the expansion head and the shaft sleeve, and the inner vertical end surface of the positioning boss is used for being positioned and matched with the outer vertical end surface of the workpiece.
In the technical scheme, the positioning boss is formed by coaxially and integrally forming the positioning boss, the expansion sleeve and the shaft sleeve as a preferable technical scheme of the utility model.
In the technical scheme, the sizes of the nut and the screw are standard parts as the preferable technical scheme of the utility model.
Compared with the prior art, the utility model has the advantages that:
1. According to the utility model, the plug is inserted into the expansion head, the nut is preassembled at the thread part of the plug, the expansion head is inserted into the special-shaped hole of the workpiece, the inner conical surface of the expansion head is continuously extruded by the outer conical surface of the plug by continuously screwing the nut, after the expansion head is expanded, the expansion head is in interference fit with the special-shaped Kong Zhang of the workpiece, so that the coaxial fixation of the workpiece on the tool is realized, and the center of the tool is the center of the workpiece, so that the technical problem that the center of the workpiece cannot be aligned and clamped and fixed is solved.
2. The tool can be used for concentrically clamping a special-shaped hole workpiece, realizes centering clamping of the special-shaped hole workpiece on a machine tool in a mode of extending the axis of the workpiece, solves the problem of centering and clamping of the special-shaped hole workpiece which is not provided with a center hole, and is detached after the workpiece is machined, the workpiece is complete in structure, and the machining efficiency is improved.
3. The utility model can realize the quick reference positioning of the center of the workpiece with the special-shaped hole on the machine tool for excircle grinding or milling, and can meet the high-precision processing requirement of the workpiece on the basis of ensuring the integrity of the workpiece.
4. The tool is simple in structure and assembly, low in manufacturing cost, simple and convenient and quick to operate, capable of being repeatedly disassembled and used, convenient to maintain, capable of reducing machining difficulty from a production angle, low in product machining cost and suitable for popularization.
Drawings
FIG. 1 is a front view of a structure of a workpiece to be machined with a strip-shaped hole;
FIG. 2 is a front view of a structure of a workpiece to be machined with a D-shaped hole;
FIG. 3 is a longitudinal cross-sectional view of an expansion head according to the present utility model;
FIG. 4 is a front view of a plug of the present utility model;
FIG. 5 is a side view of an expansion head of the present utility model having a strip-shaped expansion shell;
FIG. 6 is a perspective view of an expansion head of the present utility model having a strip-shaped expansion shell;
FIG. 7 is a perspective view of an expansion head of the present utility model having a D-shaped expansion shell;
FIG. 8 is a perspective view of a plug of the present utility model;
FIG. 9 is a schematic diagram of the assembled tooling and workpiece according to the present utility model;
FIG. 10 is a right side view of FIG. 9;
In the figure, the device comprises a 1-expansion head, a 101-expansion sleeve, 1011-expansion joints, 102-positioning bosses, 103-shaft sleeves, 2-plugs, 201-cone bodies, 202-pull rods, 203-screw rods, 2031-screw rod center holes, 3-nuts, 4-workpieces and 401-special-shaped holes.
Detailed Description
The technical solutions according to the embodiments of the present utility model will be clearly and completely described below with reference to fig. 3 to 10 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The tool for processing the excircle of the special-shaped hole workpiece (shown in figure 9) consists of an expansion head 1, a plug 2 and a nut 3. The tool has only three parts, has a simple structure and is beneficial to reducing the cost.
The expansion head 1 comprises an expansion sleeve 101 and a shaft sleeve 103 which are coaxially and integrally formed, the expansion sleeve and the shaft sleeve are coaxially arranged to ensure concentricity of a tool and a workpiece, and the expansion sleeve 101 and the shaft sleeve 103 are integrally formed to be higher than that of the expansion sleeve 101 and the shaft sleeve 103 which are of split structures, so that concentricity and coaxiality of the tool and the workpiece 4 which are clamped at the later stage are ensured, and therefore machining precision is ensured.
The plug 2 is composed of a cone 201, a pull rod 202 and a screw 203 which are coaxially and integrally formed from back to front, and the coaxial and integrally formed structure is guaranteed to be coaxial compared with a split structure, so that the clamping concentricity is high, and the machining precision is guaranteed.
The outer part of the sleeve body of the expansion sleeve 101 is in coaxial clearance fit with the special-shaped hole 401 of the workpiece 4 to be processed, namely, the concentric clamping of the tool and the workpiece 4 is realized, so that the center of the workpiece 4 is prolonged through the tool, and the centering clamping of the tool is realized.
An expansion joint 1011 is axially formed on the sleeve body of the expansion sleeve 101, and the expansion joint 1011 is used for realizing the gradual expansion function between the expansion sleeve 101 and the special-shaped hole 401 of the workpiece 4.
When the tool is assembled with a workpiece 4 for use, as shown in fig. 9, the plug 2 is coaxially inserted into the expansion sleeve 101 and the shaft sleeve 103 of the expansion head 1 in advance, and the screw 203 of the plug 2 extends out of the front end of the expansion head 1. The conical surface 201 of the plug 2 has the same taper as the conical surface of the inner conical surface of the expansion sleeve 101, and is fit with the conical surface, namely, the gradual expansion function of a tool and a workpiece 4 described later is realized through a conical surface structure.
The expansion process is that the screw 203 is screwed to be matched with the nut 3, as shown in fig. 9, the plug 2 is axially displaced rightward along with the continuous screwing of the nut 3, and the plug displaced rightward continuously extrudes the inner conical surface of the expansion sleeve 101 through the outer conical surface of the cone 201 of the plug 2, so that the expansion sleeve 101 is expanded, the expanded expansion sleeve 101 is used for being converted into expansion interference fit with the special-shaped hole 401 of the workpiece 4 from clearance fit, and the coaxial fixed connection of the workpiece 4 and the tool is realized. At the moment, the center of the tool is the center of the workpiece 4, and centering clamping of the workpiece 4 is realized through the center of the tool. Thereby solving the technical problems that the center of the workpiece 4 shown in fig. 1 and 2 cannot be aligned and clamped and fixed.
Therefore, the fixture can clamp the special-shaped hole 401 workpiece 4 concentrically, and realize centering clamping of the special-shaped hole 401 workpiece 4 on a machine tool in a mode of extending the axis of the workpiece 4, so that the problem of centering and clamping of the special-shaped hole workpiece 4 without a central hole is solved. The tool is dismantled after the processing of the workpiece 4 is completed, and when the tool is dismantled, the expansion head 1 can be withdrawn from the special-shaped hole 401 of the workpiece 4 only by loosening the nut 3, so that the workpiece 4 has a complete structure, is simple to assemble and disassemble, is convenient to operate, effectively improves the processing efficiency, and ensures the processing precision.
In the above embodiment, as the application of the present utility model, the special-shaped hole 401 is in a shape of bar or D (as shown in fig. 1 and 2), and the casing of the expansion sleeve 101 is in a shape of bar or D (as shown in fig. 5, 6 and 7). The centering, aligning and clamping problems of the workpiece 4 with the special-shaped hole 401 are solved.
In the above embodiment, as a further improvement of the present utility model, a screw center hole 2031 is formed in the center of the front end of the screw 203. The screw central hole 2031 is used for facilitating centering and clamping of the tool on the center. Specifically, after the fixture is installed at two ends of the special-shaped holes 401 at two ends of the workpiece 4 respectively, the center of the fixture and the centering clamping of the workpiece 4 can be realized by propping against the center hole 2031 of the double-end screw rod through the center. In addition, clamping can be achieved through the shaft sleeve 103 with the tool of the workpiece 4 extended.
In the above embodiment, as a preferred embodiment of the present utility model, the expansion joint 1011 is uniformly distributed along the radial direction of the sleeve body of the expansion sleeve 101 and is provided with at least four channels. The expansion joints 1011 are uniformly distributed along the radial direction of the sleeve body of the expansion sleeve 101, so that the expansion force is uniformly distributed, and the clamping force is uniformly ensured. At least four expansion joints 1011 ensure the deformation effect of the expansion sleeve 101.
In the above embodiment, as a preferred embodiment of the present utility model, the axial length of the expansion sleeve 101 is greater than or equal to the axial length of the special-shaped hole 401 of the workpiece 4. The expansion sleeve 101 can be fully contacted with the special-shaped hole 401 of the workpiece 4, and the clamping connection reliability between the workpiece 4 and the tool is ensured.
In the above embodiment, as a further improvement of the present utility model, a positioning boss 102 is provided between the expansion sleeve 101 and the shaft sleeve 103 of the expansion head 1, as shown in fig. 9, when the axial length of the expansion sleeve 101 is equal to the axial length of the special-shaped hole 401 of the workpiece 4, the inner vertical end surface of the positioning boss 102 is used for positioning and fitting with the outer vertical end surface of the workpiece 4, so that the expansion head 1 is conveniently and accurately positioned and assembled in the special-shaped hole 401 of the workpiece 4, and the assembly reliability of the expansion head 1 and the special-shaped hole 401 of the workpiece 4 is ensured.
In the above embodiment, as a preferable technical scheme of the present utility model, the positioning boss 102, the expansion sleeve 101 and the shaft sleeve 103 are coaxially and integrally formed. And the integrated structure ensures coaxiality and clamping concentricity.
In the above embodiment, as a preferable technical scheme of the present utility model, the sizes of the nut 3 and the screw 203 are standard component sizes. The nut 3 can be directly used by adopting the existing standard component, which is helpful for reducing the whole manufacturing cost of the tool.
The working principle of the utility model is that (as shown in fig. 9), the plug 2 is coaxially inserted into the expansion sleeve 101 and the shaft sleeve 103 of the expansion head 1 in advance, and the screw 203 of the plug 2 extends out of the front end of the expansion head 1. The cone 201 of the plug 2 has the same external conical surface as the internal conical surface of the expansion sleeve 101 and is fit with the expansion sleeve, and the screw 203 is screwed to fit with the nut 3. The expansion process is that, as the nut 3 is continuously screwed, the plug 2 is continuously axially displaced rightward as shown in fig. 9, the plug 2 which is displaced rightward continuously extrudes the inner conical surface of the expansion sleeve 101 through the outer conical surface of the conical body 201 of the plug 2, so that the expansion sleeve 101 is gradually expanded, and the gradually expanded expansion sleeve 101 is used for being converted into expansion interference fit with the special-shaped hole 401 of the workpiece 4 from clearance fit, so that coaxial fixed connection of the workpiece 4 and the tool is realized. At the moment, the center of the tool is the center of the workpiece 4, and the centering and clamping of the workpiece 4 are indirectly realized through the extending effect of the center of the tool on the center line of the workpiece 4. The clamping is finally realized through the shaft sleeve 103 of the tool, or the centering clamping of the workpiece 4 is realized through the screw central hole 2031 of the tool. In the gradual locking process of the expansion head 1 and the workpiece 4, the excircle runout of the workpiece 4 can be adjusted by marking a table, and after the surface to be processed of the workpiece 4 is aligned to runout, the nut 3 is fastened to the expansion head 1 and the special-shaped hole 401 of the workpiece 4 to be in interference, so that the workpiece 4 is tightly held. The centering clamping of the special-shaped hole 401 workpiece 4 on the machine tool is realized by adopting a mode of extending the axis of the workpiece 4, and the problem of centering clamping of the special-shaped hole 401 workpiece 4 without a central hole is solved. The tool structure is used for prolonging the axis of the workpiece 4, solving the difficulty that the workpiece 4 is aligned with a part and has no center hole, and removing the structure after processing is completed, so that the workpiece 4 has a complete structure.
Through the description, the utility model can realize the excircle grinding or milling of the workpiece 4 with the special-shaped hole 401 shown in fig. 1 and 2, especially realize the rapid reference positioning of the center of the workpiece 4 with the special-shaped hole 401, and fulfill the high-efficiency and high-precision processing requirements of the workpiece 4 on the basis of ensuring the integrity of the workpiece 4. The workpiece 4 having a high requirement for appearance and no reference axis on one or both end surfaces is particularly suitable.
The fixture has the advantages of capability of leading out a central line, extending the central line, capability of adjusting runout, capability of ensuring the integrity of a workpiece, simple structure, convenience in disassembly, wide applicability, and suitability for milling, flat grinding, external grinding, planing and the like.
In addition, the tool is simple in structure assembly, low in manufacturing cost, convenient and quick to operate, convenient to maintain, capable of being repeatedly disassembled and used, capable of being quickly adapted and aligned for different special-shaped holes 401 or end face blind hole workpieces 4 difficult to align, capable of reducing the material preparation time of a processing process in production and material preparation, capable of reducing the processing difficulty from the production angle, objectively reducing the product processing cost, and suitable for popularization.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modifications and equivalent substitutions made within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Claims (8)
1. A special-shaped hole workpiece excircle machining tool is characterized by comprising an expansion head (1), a plug (2) and a nut (3), wherein the expansion head (1) comprises an expansion sleeve (101) and a shaft sleeve (103) which are coaxially and integrally formed, the plug (2) comprises a cone body (201), a pull rod (202) and a screw rod (203) which are coaxially and integrally formed from back to front, the outer part of the sleeve body of the expansion sleeve (101) is coaxially and intermittently matched with a special-shaped hole (401) of a workpiece (4) to be machined, an expansion slot (1011) is formed in the sleeve body of the expansion sleeve (101) in the axial direction, the plug (2) is coaxially inserted into the expansion sleeve (101) and the shaft sleeve (103) of the expansion head (1), a conical surface (201) of the plug (2) extends out of the front end of the expansion head (1), the conical surface of the plug (2) is identical to the conical surface of the expansion sleeve (101) and is matched with the conical surface of the nut (3) in the axial direction, the expansion sleeve (101) is axially matched with the conical surface of the expansion sleeve (101) in the axial direction along with the continuous expansion of the nut (3), the workpiece (4) and the tool are coaxially fixed, the center of the tool is the center of the workpiece (4), and the workpiece (4) is centered and clamped through the center of the tool.
2. The tool for machining the excircle of the special-shaped hole workpiece according to claim 1 is characterized in that the special-shaped hole (401) is in a strip shape or a D shape, and the expansion sleeve (101) is in a strip shape or a D shape.
3. The special-shaped hole workpiece excircle processing tool according to claim 1, wherein the expansion joints (1011) are uniformly distributed along the radial direction of the sleeve body of the expansion sleeve (101) at least four channels.
4. The special-shaped hole workpiece excircle processing tool according to claim 1, wherein a screw center hole (2031) is formed in the center of the front end of the screw (203).
5. The tool for machining the excircle of the special-shaped hole workpiece according to claim 1, wherein the axial length of the expansion sleeve (101) is larger than or equal to the axial length of the special-shaped hole (401) of the workpiece (4).
6. The special-shaped hole workpiece excircle processing tool according to claim 1 is characterized in that a positioning boss (102) is arranged between an expansion sleeve (101) and a shaft sleeve (103) of the expansion head (1), and the inner vertical end surface of the positioning boss (102) is used for being positioned and matched with the outer vertical end surface of the workpiece (4).
7. The special-shaped hole workpiece excircle processing tool according to claim 6, wherein the positioning boss (102) is formed by coaxial integrated molding with the expansion sleeve (101) and the shaft sleeve (103).
8. The special-shaped hole workpiece excircle processing tool according to claim 1, wherein the sizes of the nut (3) and the screw (203) are standard component sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421149303.5U CN222403531U (en) | 2024-05-23 | 2024-05-23 | Special-shaped hole workpiece excircle machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421149303.5U CN222403531U (en) | 2024-05-23 | 2024-05-23 | Special-shaped hole workpiece excircle machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222403531U true CN222403531U (en) | 2025-01-28 |
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ID=94348606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421149303.5U Active CN222403531U (en) | 2024-05-23 | 2024-05-23 | Special-shaped hole workpiece excircle machining tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222403531U (en) |
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2024
- 2024-05-23 CN CN202421149303.5U patent/CN222403531U/en active Active
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