CN214684313U - Lathe fixture - Google Patents
Lathe fixture Download PDFInfo
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- CN214684313U CN214684313U CN202120495780.7U CN202120495780U CN214684313U CN 214684313 U CN214684313 U CN 214684313U CN 202120495780 U CN202120495780 U CN 202120495780U CN 214684313 U CN214684313 U CN 214684313U
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- eccentric
- positioning
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- hole
- center
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- 238000003754 machining Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 34
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000670 limiting effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a turning attachment, turning attachment is used for processing the excircle of eccentric wheel, the eccentric wheel has one to run through the eccentric wheel have an eccentric hole, the center of eccentric hole with the center of excircle does not coincide, turning attachment includes anchor clamps main part and clamp plate, wherein, the anchor clamps main part includes mutually perpendicular's centre gripping bottom plate and location axle, the centre gripping bottom plate is fixed on the lathe, the one end of location axle with the centre gripping bottom plate is connected, and the other end runs through the eccentric hole, the clamp plate be used for with the eccentric wheel compresses tightly in the anchor clamps main part, the clamp plate is located the location axle runs through the one end of eccentric hole and with the location hub connection, the tip of clamp plate with the eccentric wheel butt. The utility model provides a turning attachment clamping is simple, and the processing rigidity is strong, and the location is reliable stable, can effectively improve production efficiency and machining precision.
Description
Technical Field
The utility model relates to a frock clamp technical field of machining especially relates to a lathe fixture.
Background
When the eccentric wheel with the inner hole is subjected to excircle processing, the excircle and the inner hole of the eccentric wheel have certain eccentricity, so that the eccentricity cannot be directly found on a lathe for direct processing, the eccentric wheel can only be processed on a boring lathe or other processing centers, the processing of each eccentric wheel needs to be clamped and corrected, the processing efficiency is low, the processing cost is high, the eccentric tolerance precision cannot be guaranteed, and the production progress and the processing quality are directly influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a turning attachment, the clamping is simple, and the processing rigidity is strong, and the location is reliable stable, can effectively improve production efficiency and machining precision.
In order to achieve the above object, the utility model provides a turning attachment, turning attachment is used for processing the excircle of eccentric wheel, the eccentric wheel has one and runs through the eccentric orifice of eccentric wheel, the center of eccentric orifice with the center of excircle does not coincide, turning attachment includes:
the fixture main body comprises a clamping bottom plate and a positioning shaft which are perpendicular to each other, the clamping bottom plate is fixed on a lathe, one end of the positioning shaft is connected with the clamping bottom plate, and the other end of the positioning shaft penetrates through the eccentric hole;
the pressing plate is used for pressing the eccentric wheel on the clamp main body, the pressing plate is located at one end, penetrating through the eccentric hole, of the positioning shaft and is connected with the positioning shaft, and the end portion of the pressing plate is abutted to the eccentric wheel.
Optionally, a positioning plate is arranged at one end of the positioning shaft connected with the clamping bottom plate, and a plurality of first pin holes for threaded connection of the positioning shaft and the clamping bottom plate are correspondingly formed in the positioning plate and the clamping bottom plate.
Optionally, the clamping base plate has a positioning reference hole, and the positioning plate has a positioning boss, where the positioning boss corresponds to the positioning reference hole in position so as to facilitate the insertion of the positioning boss into the positioning reference hole.
Optionally, the clamping base plate is further provided with a centering reference hole, and a distance between the center of the centering reference hole and the center of the positioning reference hole is consistent with a distance between the center of the outer circle and the center of the eccentric hole.
Optionally, the center of the first pin hole, the center of the positioning reference hole, and the center of the centering reference hole are located on the same straight line.
Optionally, one end of the positioning shaft penetrating through the eccentric hole and the pressing plate are correspondingly provided with a plurality of second pin holes for connecting the positioning shaft and the pressing plate in a threaded manner.
Optionally, a key groove is correspondingly formed in the hole wall of the eccentric hole and the outer wall of the positioning shaft, and the lathe fixture further comprises a key block for being inserted into the key groove.
Optionally, the centers of the projections of the positioning shaft, the key groove and the second pin hole on the clamping bottom plate are located on the same straight line.
Optionally, a first gap is formed between the end of the pressing plate and the eccentric wheel, the lathe fixture further comprises a plurality of first cushion blocks arranged at the first gap, and the end of the pressing plate is abutted to the eccentric wheel through the first cushion blocks.
Optionally, a second gap is formed between the eccentric wheel and the clamping base plate, the lathe fixture further includes a plurality of second cushion blocks disposed at the second gap, a first end of each second cushion block abuts against the eccentric wheel, and a second end of each second cushion block is inserted into the insertion hole of the clamping base plate.
The utility model provides an among the turning attachment, following beneficial effect has:
1) the clamping bottom plate is connected with a lathe, so that the stable installation of a lathe clamp is ensured;
2) the positioning shaft is matched with an eccentric hole of the eccentric wheel, so that the positioning and limiting effects on the eccentric wheel are taken into consideration;
3) a pressing plate for pressing the eccentric wheel on the clamp main body is designed at one end of the positioning shaft penetrating through the eccentric hole, so that the clamping stability of the eccentric wheel is ensured;
4) the utility model provides a turning attachment clamping is simple, and the processing rigidity is strong, and the location is reliable stable, can effectively improve production efficiency and machining precision.
Drawings
It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:
fig. 1 is an assembly diagram of a lathe fixture according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a lathe fixture provided by an embodiment of the present invention;
fig. 3 is a cross-sectional view of an eccentric wheel according to an embodiment of the present invention;
fig. 4 is a top view of an eccentric wheel according to an embodiment of the present invention;
fig. 5 is a perspective view of a clamp body according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a main body of a clamp according to an embodiment of the present invention;
wherein the reference numerals are:
10-eccentric wheel; 11-eccentric hole; 12-keyways on the eccentric; 20-clamping the bottom plate; 21-positioning a reference hole; 22-finding a center reference hole; 23-inserting holes; 30-positioning the shaft; 31-a positioning plate; 32-a first pin hole; 33-a second pin hole; 34-locating the keyway on the shaft; 40-lathe; 50-pressing plate; 61-a first cushion block; 62-a second head block; and 70-machining the cutter.
Detailed Description
To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in simplified form and are not to scale, but rather are provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently. It should be further understood that the terms "first," "second," "third," and the like in the description are used for distinguishing between various components, elements, steps, and the like, and are not intended to imply a logical or sequential relationship between various components, elements, steps, or the like, unless otherwise indicated or indicated.
As shown in fig. 1 and 2, the present embodiment provides a turning jig for machining an outer circle of an eccentric 10, the eccentric 10 having an eccentric hole penetrating the eccentric 10, the eccentric hole having a center that does not coincide with a center of the outer circle, the turning jig comprising:
the clamp comprises a clamp main body and a clamping mechanism, wherein the clamp main body comprises a clamping bottom plate 20 and a positioning shaft 30 which are perpendicular to each other, the clamping bottom plate 20 is fixed on a lathe 40, one end of the positioning shaft 30 is connected with the clamping bottom plate 20, and the other end of the positioning shaft penetrates through the eccentric hole;
and the pressing plate 50 is used for pressing the eccentric wheel 10 on the clamp main body, the pressing plate 50 is positioned at one end, penetrating through the eccentric hole, of the positioning shaft 30 and is connected with the positioning shaft 30, and the end part of the pressing plate 50 is abutted to the eccentric wheel 10.
Specifically, referring to fig. 3 and 4, fig. 3 and 4 are a cross-sectional view and a top view of the eccentric wheel 10 provided in this embodiment, respectively, and since the center of the eccentric hole 11 is not overlapped with the center of the eccentric wheel 10, a certain eccentric distance exists between the outer circle of the eccentric wheel 10 and the eccentric hole 11.
Referring to fig. 5 and 6, fig. 5 and 6 are a perspective view and a top view of a clamp main body according to an embodiment of the present invention, the clamp main body includes a clamping base plate 20 and a positioning shaft 30, the clamping base plate 20 is fixed on a lathe 40, for example, by a four-jaw chuck, and the eccentric wheel 10 is clamped stably. The positioning shaft 30 is used for matching with the eccentric hole 11 of the eccentric wheel 10, and positioning and limiting the eccentric wheel 10.
In this embodiment, the clamping base plate 20 includes, but is not limited to, a square steel plate, and the positioning shaft 30 includes, but is not limited to, a steel cylinder.
Furthermore, a positioning plate 31 is arranged at one end of the positioning shaft 30 connected with the clamping bottom plate 20, and a plurality of first pin holes 32 for connecting the positioning shaft 30 with the clamping bottom plate 20 in a threaded manner are correspondingly arranged on the positioning plate 31 and the clamping bottom plate 20. In this embodiment, the positioning shaft 30 and the clamping base plate 20 can be detachably connected by a fastener such as a bolt or a pin. It should be understood that the positioning shaft 30 and the clamping base plate 20 may be connected by other means, such as welding, or even cast integrally, and the present application is not limited thereto.
In this embodiment, the positioning plate 31 is a disc, the diameter of the positioning plate 31 is greater than that of the positioning shaft 30, the positioning plate 31 and the clamping bottom plate 20 are both provided with four first pin holes 32, and the four threaded holes are arranged at equal intervals along the circumferential direction of the positioning plate 31. It should be noted that the number and distribution of the first pin holes 32 are not limited in any way in the present application.
For better positioning and limiting the positioning plate 31, the clamping base plate 20 has a positioning reference hole 21, and the positioning plate 31 has a positioning boss corresponding to the positioning reference hole 21 in position so as to be inserted into the positioning reference hole 21. In this embodiment, there is one positioning boss, and the center of the positioning boss and the center of the positioning shaft 30 are located on the same straight line. Of course, the number of the positioning bosses is not limited to one, and may be multiple, which is not limited in this application.
With reference to fig. 5 and fig. 6, the clamping base plate 20 further has a centering reference hole 22, and a distance between a center of the centering reference hole 22 and a center of the positioning reference hole 21 is consistent with a distance between a center of the outer circle and a center of the eccentric hole 11, so as to ensure the machining accuracy of the outer circle.
Further, the center of the first pin hole 32, the center of the positioning reference hole 21, and the center of the centering reference hole 22 are located on the same straight line.
With continued reference to fig. 1, the pressing plate 50 is located at one end of the positioning shaft 30 penetrating through the eccentric hole 11, and is used for pressing the eccentric 10 on the clamp body, so as to ensure the stability of the eccentric 10 during the machining process.
In this embodiment, the positioning shaft 30 penetrates through one end of the eccentric hole 11 and the pressing plate 50 is correspondingly provided with a plurality of second pin holes 33 for connecting the positioning shaft 30 and the pressing plate 50 by screw threads. It is understood that the pressing plate 50 and the positioning shaft 30 can be screwed together by a fastening member such as a bolt. Similarly, the present application is not limited to the connection manner of the two, and the two may be detachably connected, for example, by a pin.
In this embodiment, only one second pin hole 33 is disposed on each of the positioning shaft 30 and the pressing plate 50. It is understood that the number and distribution of the second pin holes 33 are not limited in any way.
Further, key grooves are correspondingly formed in the wall of the eccentric hole 11 and the outer wall of the positioning shaft 30, and the lathe fixture further comprises a key block for inserting the key grooves. The mode through key-type connection has effectively prevented eccentric wheel 10 and has been around axial rotation, guarantees eccentric wheel 10 location is reliable, and the processing stability is better.
In this embodiment, only one key groove is disposed at the eccentric hole 11 and on the positioning shaft 30, including the key groove 12 on the eccentric wheel 10 in fig. 4 and the key groove 34 on the positioning shaft 30 in fig. 6. It should be understood that the number and distribution of the key slots are not limited in any way.
Furthermore, the centers of the projections of the positioning shaft 30, the key groove and the second pin hole 33 on the clamping base plate 20 are located on the same straight line, so as to ensure the accurate positioning of the eccentric wheel.
Referring to fig. 1 and 2, a first gap is formed between the end of the pressing plate 50 and the eccentric wheel 10, the lathe fixture further includes a plurality of first cushion blocks 61 disposed at the first gap, two ends of the first cushion blocks 61 are respectively abutted against the pressing plate 50 and the eccentric wheel 10, that is, the end of the pressing plate 50 is abutted against the eccentric wheel 10 through the first cushion blocks 61, so as to press the eccentric wheel 10 against the fixture body. It is understood that the pressing plate 50 can also abut against the eccentric wheel 10 in other ways, for example, a boss can be directly designed at the end of the pressing plate 50, so that the pressing plate 50 directly presses the eccentric wheel 10 through the boss, and in this case, the first cushion block 61 is not needed.
In this embodiment, the pressing plate 50 is in a long strip shape, the position of the pressing plate 50 close to the center is in threaded connection with the positioning shaft 30, and two ends of the pressing plate 50 are connected with the eccentric wheel 10 through the first cushion block 61. The shape and size of the first block 61 are not limited in this embodiment.
Further, a second gap is formed between the eccentric wheel 10 and the clamping bottom plate 20, the lathe fixture further comprises a plurality of second cushion blocks arranged at the second gap, and two ends of each second cushion block are respectively abutted to the eccentric wheel 10 and the clamping bottom plate 20. The second cushion block is arranged at the gap between the eccentric wheel 10 and the clamping bottom plate 20, so that the clamping stability of the eccentric wheel 10 can be further improved, and the eccentric wheel 10 is prevented from tilting in the machining process.
Or, with reference to fig. 2, a second gap is formed between the eccentric 10 and the clamping base plate 20, the lathe fixture further includes a plurality of second spacers 62 disposed at the second gap, a first end of the second spacer 62 abuts against the eccentric 10, and a second end of the second spacer 62 is inserted into the insertion hole 23 of the clamping base plate 20. One end of the second cushion block 62 is embedded into the clamping base plate 20 to limit the second cushion block 62, so that the second cushion block 62 is effectively prevented from moving in the machining process, the clamping stability is ensured, and the machining precision is improved.
Furthermore, the diameter of the second end is smaller than that of the first end, and the limiting effect is better.
In this embodiment, the parallelism between the upper surface and the lower surface of the clamping base plate 20 is 0.05 mm.
The clamping process of the lathe fixture of the present embodiment is described in detail below with reference to fig. 1 to 6, and specifically includes the following steps:
s1, fixing the clamping bottom plate 20 and the positioning shaft 30, locking and connecting the clamping bottom plate 20 with a four-jaw chuck of the lathe 40, wherein the lower surface of the clamping bottom plate 20 is required to be tightly attached to the end surface of the four-jaw chuck during connection, and the parallelism of the lower surface of the clamping bottom plate 20 is checked through a dial indicator until the parallelism is adjusted to 0.03 mm;
s2, sleeving the eccentric wheel 10 on the positioning shaft 30, and fixing the eccentric wheel 10 and a key groove on the positioning shaft 30 through a key block;
s3, installing a pressure plate 50, fixing the pressure plate 50 on the positioning shaft 30 through bolts, placing a first cushion block 61 between the end part of the pressure plate 50 and the eccentric wheel 10, and placing a second cushion block 62 between the eccentric wheel 10 and the clamping bottom plate 20;
s4, after the eccentric wheel 10 is clamped firmly, the outer circle of the eccentric wheel 10 is machined through the machining tool 70.
To sum up, the embodiment of the utility model provides a turning attachment, turning attachment is used for processing the excircle of eccentric wheel, the eccentric wheel has one to run through the eccentric wheel have the eccentric orfice, the center of eccentric orfice with the center of excircle does not coincide, turning attachment includes anchor clamps main part and clamp plate, wherein, the anchor clamps main part includes mutually perpendicular's centre gripping bottom plate and location axle, the centre gripping bottom plate is fixed on the lathe, the one end of location axle with the centre gripping bottom plate is connected, and the other end runs through the eccentric orfice, the clamp plate be used for with the eccentric wheel compresses tightly in the anchor clamps main part, the clamp plate is located the location axle runs through the one end of eccentric orfice and with the location hub connection, the tip of clamp plate with the eccentric wheel butt. The utility model provides a turning attachment clamping is simple, and the processing rigidity is strong, and the location is reliable stable, can in time pinpoint, can effectively improve production efficiency and machining precision.
It should also be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, the foregoing description is not intended to limit the invention. To anyone skilled in the art, without departing from the scope of the present invention, the technical solution disclosed above can be used to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (10)
1. A turning attachment for machining an outer circle of an eccentric, the eccentric having an eccentric hole extending through the eccentric, the center of the eccentric hole not coinciding with the center of the outer circle, the turning attachment comprising:
the fixture main body comprises a clamping bottom plate and a positioning shaft which are perpendicular to each other, the clamping bottom plate is fixed on a lathe, one end of the positioning shaft is connected with the clamping bottom plate, and the other end of the positioning shaft penetrates through the eccentric hole;
the pressing plate is used for pressing the eccentric wheel on the clamp main body, the pressing plate is located at one end, penetrating through the eccentric hole, of the positioning shaft and is connected with the positioning shaft, and the end portion of the pressing plate is abutted to the eccentric wheel.
2. The turning attachment of claim 1 wherein the end of the positioning shaft that is coupled to the clamping base plate has a positioning plate, the positioning plate and the clamping base plate having a plurality of first pin holes formed therein for threadably coupling the positioning shaft to the clamping base plate.
3. The lathe jig according to claim 2, wherein the clamping base plate has a positioning reference hole, and the positioning plate has a positioning boss corresponding to the positioning reference hole in position so that the positioning boss is inserted into the positioning reference hole.
4. The lathe jig of claim 3, wherein the clamping base plate further has a centering reference hole, and a distance between a center of the centering reference hole and a center of the positioning reference hole coincides with a distance between a center of the outer circle and a center of the eccentric hole.
5. The turning attachment of claim 4, wherein the center of the first pin hole, the center of the positioning reference hole, and the center of the centering reference hole are located on the same line.
6. The turning attachment of claim 1, wherein the locating shaft extends through one end of the eccentric bore and the pressure plate is provided with a plurality of second pin holes for threadedly connecting the locating shaft and the pressure plate.
7. The turning attachment of claim 6, wherein the wall of the eccentric bore is provided with a key slot corresponding to the outer wall of the positioning shaft, and further comprising a key block for inserting into the key slot.
8. The turning attachment of claim 7, wherein centers of projections of the positioning shaft, the key groove, and the second pin hole on the clamping base plate are located on the same line.
9. The lathe fixture of claim 1, wherein a first gap is provided between the end of the pressure plate and the eccentric, the lathe fixture further comprising a plurality of first spacers disposed at the first gap, the end of the pressure plate abutting the eccentric through the first spacers.
10. The lathe fixture according to claim 1, wherein a second gap is provided between the eccentric and the clamping base plate, the lathe fixture further comprising a plurality of second shoes provided at the second gap, first ends of the second shoes abutting against the eccentric, and second ends of the second shoes being inserted into the insertion holes of the clamping base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120495780.7U CN214684313U (en) | 2021-03-02 | 2021-03-02 | Lathe fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120495780.7U CN214684313U (en) | 2021-03-02 | 2021-03-02 | Lathe fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214684313U true CN214684313U (en) | 2021-11-12 |
Family
ID=78570302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120495780.7U Expired - Fee Related CN214684313U (en) | 2021-03-02 | 2021-03-02 | Lathe fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214684313U (en) |
-
2021
- 2021-03-02 CN CN202120495780.7U patent/CN214684313U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |