CN220805522U - Tool for machining tapered elliptic piston skirt - Google Patents
Tool for machining tapered elliptic piston skirt Download PDFInfo
- Publication number
- CN220805522U CN220805522U CN202322473295.1U CN202322473295U CN220805522U CN 220805522 U CN220805522 U CN 220805522U CN 202322473295 U CN202322473295 U CN 202322473295U CN 220805522 U CN220805522 U CN 220805522U
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- China
- Prior art keywords
- piston skirt
- positioning
- disc
- face
- hand member
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- 238000003754 machining Methods 0.000 title claims abstract description 17
- 210000004907 gland Anatomy 0.000 claims abstract description 3
- 230000006978 adaptation Effects 0.000 claims abstract 2
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Abstract
The utility model provides a frock is used in processing of awl elliptic piston skirt, including the left end external diameter is greater than the echelonment positioning disk of right-hand member external diameter, be equipped with on the step face of positioning disk right-hand member and be used for carrying out the positioner who fixes a position piston skirt axial and radial, the fixed connecting rod in positioning disk right-hand member face middle part wears out the centre bore of piston skirt and carries out radial positioning to piston skirt, the outside gland nut of piston skirt right-hand member is connected with connecting rod right-hand member adaptation and compresses tightly the piston skirt and be fixed in on the positioning disk. According to the utility model, by utilizing the structural characteristics of the piston skirt, the positioning disc which is connected with the three-jaw chuck and is provided with the positioning device on the right end face is adopted to position the piston skirt in the radial direction and the axial direction, and the piston skirt is positioned and fixed on the positioning disc through the connecting rod and the compression nut on the right end face of the positioning disc, so that the problem of clamping deformation of the original piston skirt cone elliptic line machining tool is solved, and particularly the piston skirt is machined by one-step clamping.
Description
Technical Field
The utility model belongs to the technical field of machining, and particularly relates to a tool for machining a conical elliptic piston skirt.
Background
The piston is the "heart" of the engine, is subjected to alternating mechanical and thermal loads, and is one of the most severe operating critical components of the engine. According to the working conditions and performances of different engines, the piston is formed by combining a piston head and a piston skirt through structural design, the piston skirt at present is widely provided with a convex elliptic surface, the left end section is provided with two horizontal end surfaces at two ends and an elliptic or similar elliptic shape formed by transitional connection of the two horizontal end surfaces through an arc-shaped end surface, and the ellipticity of the elliptic surface is changed along the axial direction of the piston; the machining precision requirement of the piston skirt is high, the original process machining method is limited by a finish turning molded line tool, the lower end face and the inner hole spigot of the piston skirt are positioned, the piston skirt is clamped by connecting a piston pin hole with a main shaft pull rod of a machine tool, and then the circular arc at the lower part of the piston skirt is machined after the elliptical molded line of the piston skirt is machined, so that the outer circle deformation of the lower part of the piston skirt is generated, the phenomenon of out-of-tolerance phenomenon is easily caused by out-of-tolerance of the size of the elliptical section of the piston skirt and the perpendicularity of the dimensional tolerance of the shape and the position of the piston skirt, the product quality is greatly influenced, and therefore, the defects in the finish turning molded line tool machining are needed to be improved.
Disclosure of utility model
The utility model solves the technical problems that: the utility model provides a processing of awl becomes oval piston skirt is with frock utilizes the structural feature of piston skirt self, adopts and is connected with three-jaw chuck and the right-hand member face is equipped with positioner's positioning disk to radial and axial the location of piston skirt to be fixed in the positioning disk with the piston skirt location through the connecting rod and the gland nut of positioning disk right-hand member face, solved former piston skirt awl and become oval molded line processing frock clamping deformation problem, especially the processing is accomplished to piston skirt once clamping, simple structure, the modern design, easy operation, low in production cost, the machining precision is high, facilitate promotion and use.
The utility model adopts the technical scheme that: the tool for machining the conical elliptic piston skirt comprises a stepped positioning disc with the outer diameter of the left end being larger than that of the right end, a positioning device for axially and radially positioning the piston skirt is arranged on the step surface of the right end of the positioning disc, a connecting rod fixed in the middle of the right end face of the positioning disc penetrates out of a central hole of the piston skirt to radially position the piston skirt, and a compression nut outside the right end of the piston skirt is connected with the right end of the connecting rod in an adaptive manner and compresses and fixes the piston skirt on the positioning disc.
The positioning device comprises an axial auxiliary positioning component and a radial positioning piece, the right end of the axial auxiliary positioning component is respectively propped against two arc-shaped end faces of the left end of the piston skirt, a positioning hole is formed in one horizontal end face of the piston skirt, and the radial positioning piece is inserted into the positioning hole.
Further, the axial auxiliary positioning assembly comprises two floating supports which are positioned at two ends of the same central line of the right end face of the positioning disc, two mounting grooves which extend to the disc face of the large-diameter disc are formed in the disc face of the small-diameter disc at the right end of the positioning disc, the floating supports are fixed on the groove faces of the mounting grooves, two horizontal end faces of the piston skirt are positioned at the outer side of the small-diameter disc of the positioning disc and propped against the step faces of the large-diameter disc and the small-diameter disc, the outer diameter of the small-diameter disc at the right end of the positioning disc radially positions inner holes at two arc-shaped end faces of the piston skirt, and the two floating supports prop against the arc-shaped end faces at the corresponding sides to axially assist in positioning the piston skirt.
Further, the floating support threads are fixedly connected to the groove surface of the mounting groove and locked by the locking nuts in the mounting groove.
Further, the radial positioning piece comprises a positioning pin, the positioning pin and the floating support are fixed on the right end face of the positioning plate at 90 degrees, and the positioning pin is inserted into a positioning hole on the horizontal end face of the corresponding side of the piston skirt.
Further, a groove extending to the end face of the large-diameter disc is formed in the edge position of the small-diameter disc at the right end of the positioning disc, and the positioning pin is fixed on the groove face of the groove.
Compared with the prior art, the utility model has the advantages that:
1. According to the technical scheme, by utilizing the structural characteristics of the piston skirt, the radial direction and the axial direction of the piston skirt are positioned by adopting the positioning disc which is connected with the three-jaw chuck and is provided with the positioning device on the right end face, and the piston skirt is positioned and fixed on the positioning disc through the connecting rod and the compression nut on the right end face of the positioning disc, so that the clamping deformation problem of an original piston skirt cone elliptic line machining tool is solved, and particularly, the piston skirt is machined by one-time clamping;
2. According to the technical scheme, an operator can realize the installation and positioning of the piston skirt and the processing of the piston skirt through simple operation, so that the processing precision is high, and the quality is stable;
3. according to the technical scheme, the piston skirt can be machined by one-time clamping in the tool, wherein the piston skirt becomes an elliptic line, a piston ring groove, a piston skirt and a piston positioning spigot, and a piston skirt and a piston bearing end face;
4. The problem of the processing clamping deformation of the convex deformation elliptic molded line of the piston skirt generally exists in the processing process, and the processing clamping deformation method has the advantages of wide application range and high popularization value.
Drawings
FIG. 1 is a front elevational view of the structure of the present utility model;
fig. 2 is a right side view of the structure of the present utility model.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1-2 of 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.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
1-2, The tool for machining the tapered elliptic piston skirt comprises a step-shaped positioning disc 1 with the outer diameter of the left end being larger than that of the right end, wherein a step surface of the right end of the positioning disc 1 is provided with a positioning device for axially and radially positioning the piston skirt 2, a connecting rod 3 fixed in the middle of the right end surface of the positioning disc 1 penetrates out of a central hole of the piston skirt 2 to radially position the piston skirt 2, and a compression nut 4 outside the right end of the piston skirt 2 is connected with the right end of the connecting rod 3 in an adaptive manner and compresses and fixes the piston skirt 2 on the positioning disc 1; in the structure, by utilizing the structural characteristics of the piston skirt, the positioning disc 1 which is connected with the three-jaw chuck and is provided with the positioning device on the right end face is adopted to radially and axially position the piston skirt 2, and the piston skirt 2 is positioned and fixed on the positioning disc 1 through the connecting rod 3 and the compression nut 4 on the right end face of the positioning disc 1, so that the clamping deformation problem of the original piston skirt 2 cone-shaped elliptic line processing tool is solved, and particularly, the piston skirt 2 is processed by one-time clamping;
the specific structure of the positioning device is as follows: the positioning device comprises an axial auxiliary positioning component and a radial positioning piece, the right end of the axial auxiliary positioning component is respectively propped against two arc-shaped end faces 2-1 at the left end of the piston skirt 2, one horizontal end face 2-2 of the piston skirt 2 is provided with a positioning hole, and the radial positioning piece is inserted into the positioning hole.
The axial auxiliary positioning component is specifically as follows: the axial auxiliary positioning assembly comprises two floating supports 5 which are positioned at two ends of the same central line of the right end surface of the positioning disc 1, two mounting grooves 6 which extend to the disc surface of the large-diameter disc are formed in the disc surface of the small-diameter disc at the right end of the positioning disc 1, the floating supports 5 are fixed on the groove surfaces of the mounting grooves 6, two horizontal end surfaces 2-2 of the piston skirt 2 are positioned at the outer side of the small-diameter disc of the positioning disc 1 and propped against the step surfaces of the large-diameter disc and the small-diameter disc for axial positioning, the outer diameter of the small-diameter disc at the right end of the positioning disc 1 radially positions inner holes at the two arc-shaped end surfaces 2-1 of the piston skirt 2, and the right ends of the two floating supports 5 prop against the arc-shaped end surfaces 2-1 at the corresponding sides for axial auxiliary positioning of the piston skirt 2; specifically, the floating support 5 is fixedly connected to the groove surface of the mounting groove 6 through threads and is locked through a locking nut 8 in the mounting groove 6; the floating support 5 is a support pin with external threads, and the length of the floating support is adjusted by rotating the support pin, so that the auxiliary positioning of the piston end face 2-1 of the piston skirt 2 is realized.
The radial positioning piece has the following specific structure: the radial positioning piece comprises a positioning pin 7, the positioning pin 7 and the floating support 5 are fixed on the right end face of the positioning disc 1 at 90 degrees, and the positioning pin 7 is inserted into a positioning hole on the horizontal end face 2-2 on the corresponding side of the piston skirt 2; specifically, a groove extending to the end face of the large-diameter disc is formed in the edge position of the small-diameter disc at the right end of the positioning disc 1, and the positioning pin 7 is fixed on the groove face of the groove.
The technical scheme is simple to manufacture, low in production cost and convenient to popularize and use, the manufacturing material of the positioning disk 1 is made of common 35 high-quality carbon structural steel materials, the hardness is 28 HRC-32 HRC after quenching and tempering, and the auxiliary part is made of national standard parts.
According to the technical scheme, an operator can realize the installation and positioning of the piston skirt 2 and the processing of the piston skirt 2 through simple operation, so that the processing precision is high, and the quality is stable; the piston skirt 2 can be processed by one-time clamping in the tool, namely, the piston skirt 2 elliptic line, the piston ring groove, the piston skirt 2, the piston positioning spigot and the piston skirt 2 and the piston bearing end face can be realized; the problem of the processing, clamping and deformation of the convex elliptic molded lines in the piston skirt 2 generally exists in the processing process, and the processing method has the advantages of wide application range and high popularization value.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. Frock is used in processing of awl elliptic piston skirt, its characterized in that: including left end external diameter is greater than echelonment positioning disk (1) of right-hand member external diameter, be equipped with on the step face of positioning disk (1) right-hand member and be used for carrying out positioner that fixes a position piston skirt (2) axial and radial, the fixed connecting rod (3) in middle part of positioning disk (1) right-hand member face wears out the centre bore of piston skirt (2) and carries out radial positioning to piston skirt (2), outside gland nut (4) of piston skirt (2) right-hand member and connecting rod (3) right-hand member adaptation are connected and compress tightly piston skirt (2) and are fixed in on positioning disk (1).
2. The tooling for machining the tapered elliptic piston skirt according to claim 1, wherein: the positioning device comprises an axial auxiliary positioning assembly and a radial positioning piece, the right end of the axial auxiliary positioning assembly is respectively propped against two arc-shaped end faces (2-1) at the left end of the piston skirt (2), a positioning hole is formed in one horizontal end face (2-2) of the piston skirt (2), and the radial positioning piece is inserted into the positioning hole.
3. The tooling for machining the tapered elliptic piston skirt according to claim 2, wherein: the axial auxiliary positioning assembly comprises two floating supports (5) which are positioned at two ends of the same central line of the right end face of the positioning disc (1), two mounting grooves (6) which extend to the disc face of the large-diameter disc are formed in the disc face of the small-diameter disc at the right end of the positioning disc (1), the floating supports (5) are fixed on the groove faces of the mounting grooves (6), two horizontal end faces (2-2) of the piston skirt (2) are positioned at the outer side of the small-diameter disc of the positioning disc (1) and abut against the step faces of the large-diameter disc and the small-diameter disc, the outer diameter of the small-diameter disc at the right end of the positioning disc (1) radially positions inner holes at the two arc-shaped end faces (2-1) of the piston skirt (2), and the right ends of the two floating supports (5) abut against the arc-shaped end faces (2-1) at the corresponding sides to axially auxiliary position the piston skirt (2).
4. The tooling for machining the tapered elliptic piston skirt according to claim 3, wherein: the floating support (5) is fixedly connected to the groove surface of the mounting groove (6) through threads and is locked through a locking nut (8) in the mounting groove (6).
5. The tooling for machining the tapered elliptic piston skirt according to claim 4, wherein: the radial positioning piece comprises a positioning pin (7), the positioning pin (7) and the floating support (5) are fixed on the right end face of the positioning disc (1) at 90 degrees, and the positioning pin (7) is inserted into a positioning hole on the horizontal end face (2-2) of the corresponding side of the piston skirt (2).
6. The tooling for machining the tapered elliptic piston skirt according to claim 5, wherein: the edge of the small-diameter disc at the right end of the positioning disc (1) is provided with a groove extending to the end face of the large-diameter disc, and the positioning pin (7) is fixed on the groove face of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322473295.1U CN220805522U (en) | 2023-09-12 | 2023-09-12 | Tool for machining tapered elliptic piston skirt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322473295.1U CN220805522U (en) | 2023-09-12 | 2023-09-12 | Tool for machining tapered elliptic piston skirt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220805522U true CN220805522U (en) | 2024-04-19 |
Family
ID=90713136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322473295.1U Active CN220805522U (en) | 2023-09-12 | 2023-09-12 | Tool for machining tapered elliptic piston skirt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220805522U (en) |
-
2023
- 2023-09-12 CN CN202322473295.1U patent/CN220805522U/en active Active
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