CN215317242U - Finish machining clamp for gear box - Google Patents
Finish machining clamp for gear box Download PDFInfo
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- CN215317242U CN215317242U CN202121577941.3U CN202121577941U CN215317242U CN 215317242 U CN215317242 U CN 215317242U CN 202121577941 U CN202121577941 U CN 202121577941U CN 215317242 U CN215317242 U CN 215317242U
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Abstract
The utility model discloses a gear box finish machining clamp which is characterized in that: the device comprises a clamp seat, a plurality of supporting nails, a first cylindrical pin, a diamond pin and an inner blank wall pressing mechanism; the clamp seat is provided with a vertical surface; the supporting nail is arranged on the vertical surface and is used for being in contact fit with the first combining surface of the gear box; the first cylindrical pin is arranged on the vertical surface and is used for being matched with a first transmission hole of the gear box; the diamond pin is arranged on the vertical surface and is used for being matched with a main connecting hole of the gear box; the inner blank wall pressing mechanism comprises a first driving cylinder, a pressing plate and a plurality of pressing rods; the output end of the first driving cylinder can penetrate through a second transmission hole of the gear box and then is detachably and fixedly connected with the pressing plate; each pressure lever is arranged on the pressure plate. The utility model is used for accurately positioning, clamping and fixing the side joint surface, the side positioning hole, the side connecting hole and the semicircular hole of the gear box in finish machining, and can avoid crushing the second joint surface.
Description
Technical Field
The utility model discloses a gear box finish machining clamp.
Background
Referring to fig. 1-3, a gearbox in the prior art belongs to a steam accessory. The gear box (N) is provided with a first combination surface (N-1), a second combination surface (N-10), a first transmission hole (N-2), a second transmission hole (N-4), a third transmission hole (N-5), a main connecting hole (N-3), a side combination surface (N-6), a side positioning hole (N-9), a side connecting hole (N-7) and a semicircular hole (N-8). When the gear box (N) is processed on the side joint surface (N-6), the side positioning hole (N-9) and the side connecting hole (N-7), the second joint surface (N-10) is pressed, the second joint surface (N-10) is in contact with the cover surface of the gear box and is required to be sealed, oil leakage cannot occur, and when the second joint surface (N-10) is pressed, the second joint surface (N-10) is easily crushed, so that the precision of a workpiece is influenced. In addition, two sets of different clamps are adopted for the clamp used for processing the semicircular hole (N-8) of the original gear box (N) and the clamp used for processing the side joint surface (N-6), the side positioning hole (N-9) and the side connecting hole (N-7) of the original gear box (N); the key problems are as follows: when the gear box (N) is used for processing a side combining surface (N-6), a side positioning hole (N-9) and a side connecting hole (N-7), a first combining surface (N-1) of the gear box (N) is in surface contact fit with a supporting surface of a clamp for positioning and supporting, when a semicircular hole (N-8) is processed, the problems of cutter blocking and interference with the clamp exist, and cutting cannot be performed at the same time.
SUMMERY OF THE UTILITY MODEL
In order to solve one or more problems of the defects in the prior art, the utility model provides a gear box finish machining clamp which can be used for accurately positioning, clamping and fixing a side joint surface, a side positioning hole, a side connecting hole and a semicircular hole of a gear box in finish machining, and can avoid crushing a second joint surface.
In order to achieve the purpose, the utility model provides a gear box finish machining clamp which is characterized in that: the device comprises a clamp seat, a plurality of supporting nails, a first cylindrical pin, a diamond pin and an inner blank wall pressing mechanism; the clamp seat is provided with a vertical surface; the supporting nail is arranged on the vertical surface and is used for being in contact fit with the first combining surface of the gear box; the first cylindrical pin is arranged on the vertical surface and is used for being matched with a first transmission hole of the gear box; the diamond pin is arranged on the vertical surface and is used for being matched with a main connecting hole of the gear box; the inner blank wall pressing mechanism comprises a first driving cylinder, a pressing plate and a plurality of pressing rods; the output end of the first driving cylinder can penetrate through a second transmission hole of the gear box and then is detachably and fixedly connected with the pressing plate; each pressure lever is arranged on the pressure plate.
Preferably, the support pins have four.
Preferably, the diamond-shaped pins) have two.
Preferably, the compression bar has three.
Furthermore, the pressure plate is provided with an adjusting hole, the pressure rod is in threaded fit with the adjusting hole, and the end of the pressure rod facing the vertical surface is provided with a pressure head.
Preferably, the pressure rod is sleeved with a locknut, and the locknut is used for abutting against the pressure plate.
Furthermore, the output end of the first driving cylinder is outwards provided with a retaining column, a triangular plate and a threaded column in sequence, the center of the pressing plate is provided with a triangular hole matched with the triangular plate, and the threaded column is sleeved with a compression nut.
Preferably, the compression nut is a hexagonal flange nut.
The utility model has the beneficial effects that:
the utility model can be used for accurately positioning, clamping and fixing the finely-machined side joint surface, side positioning holes, side connecting holes and semicircular holes of the gear box, and has multiple functions;
secondly, the first combination surface of the gear box is vertically positioned and is heightened and supported at multiple points through the contact and matching of the plurality of supporting nails and the first combination surface of the gear box; because the first combining surface of the gear box and each supporting nail of the clamp are in multipoint contact and matched for positioning and supporting, and simultaneously the supporting points can flexibly avoid the processing position, when the semicircular hole 8 is processed, the boring cutter does not touch the cutter during downward feeding, the problems of cutter blocking and interference can be avoided, and the cutting can be smoothly arranged;
thirdly, the inner blank wall pressing mechanism adopts the first driving cylinder to drive the plurality of pressing rods through the pressing plate to simultaneously press the inner blank wall on the periphery of the outer side of the second transmission hole of the gear box, and the inner blank wall is in contact with the inner blank wall on the periphery of the outer side of the second transmission hole of the gear box during pressing, so that the second joint surface can be prevented from being damaged by pressing, and the surface processing precision and the assembly precision of the second joint surface are ensured; in addition, as the plurality of compression bars are adopted for simultaneous compression, simultaneous compression at multiple positions and multiple directions can be realized, and further the risk of loosening after clamping and fixing is reduced; meanwhile, the clamp is compressed by the inner wall of the box, and compared with the conventional method that the edges of the outer walls of a plurality of boxes are compressed, the clamp can avoid feed interference and is more compact and smaller in appearance;
fourthly, the pressing rod can be pressed and adjusted, so that the pressing head of the pressing rod can be reliably pressed and contacted with the inner blank wall on the periphery of the outer side of the second transmission hole of the gear box, and the problems of poor contact, insufficient pressing force and the like can be avoided; in addition, because the inner blank wall on the periphery of the outer side of the second transmission hole of the gear box is low in size precision, the three pressing rods can be adjusted through rotation, the three pressing rods can be guaranteed to be in pressing contact with the inner blank wall on the periphery of the outer side of the second transmission hole of the gear box at the same time, the reliability and firmness after positioning and pressing are improved, and the workpiece can be prevented from being loosened due to machining stress.
Fifthly, as the pressure lever is sleeved with the locknut, the pressure head of the pressure lever can be prevented from being compressed and rotating and loosening; meanwhile, the triangular hole of the pressing plate is matched with the triangular plate, the pressing plate and the blocking column are coaxially fixed and cannot rotate mutually, and therefore the pressing rods are not easy to move relatively and loosen when contacting with the inner blank pressing wall on the periphery of the outer side of the second transmission hole of the gear box.
Drawings
Fig. 1-3 are schematic views of a gearbox according to the prior art.
4-7 are schematic structural views of a gear box finishing fixture in the utility model.
Fig. 8 is a schematic view of the inner blank wall pressing mechanism with the platen removed.
Fig. 9 is a schematic view of the structure of the platen.
10-13 are schematic structural views of a gearbox finishing jig of the present invention.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
example (b): referring to fig. 4-13, a gear box finishing fixture comprises a fixture base 1, a plurality of supporting nails 2, a first cylindrical pin 3, a diamond-shaped pin 4 and an inner blank wall pressing mechanism 5.
In this embodiment, the fixture base 1 includes a bottom plate and a vertical plate, the bottom plate is used for fixing a part with a machine tool workbench, and the lower end of the vertical plate is fixedly connected (e.g. welded) with the middle of the bottom plate. The vertical plate is provided with a vertical surface 1-1.
In the present embodiment, the support pins 2 have four. Each supporting nail 2 is fixed on the vertical surface 1-1 and is used for being simultaneously in contact fit with the first combining surface N-1 of the gear box N; the first combination surface N-1 of the gear box N is vertically positioned and heightened and supported at multiple points at the same time through the support nails 2; the first combination surface N-1 of the gear box N and each supporting nail 2 of the clamp are in multi-point contact and matching positioning and supporting, meanwhile, the supporting point can flexibly avoid a processing position, and a gap is formed between the first combination surface N-1 and the vertical surface 1-1 of the gear box N; therefore, when the semicircular hole N-8 is machined, the boring cutter does not touch the cutter contact with the supporting nail 2 when the boring cutter feeds downwards, the problems of cutter blocking and interference can be avoided, and the cutting can be smoothly carried out.
In this embodiment the first cylindrical pin 3 is fixed to the facade 1-1 and is adapted to fit concentrically with the first drive bore N-2 of the gearbox N.
In the present embodiment, the diamond-shaped pins 4 have two.
The two diamond-shaped pins 4 are fixed on the vertical surface 1-1 and are respectively used for being concentrically matched with two main connecting holes N-3 of the gear box N.
In the present embodiment, the inner blank wall pressing mechanism 5 includes a first driving cylinder 5-1, a pressing plate 5-2 and a plurality of pressing rods 5-3; the output end of the first driving cylinder 5-1 can penetrate through a second transmission hole N-4 of the gearbox N and then is detachably and fixedly connected with the pressure plate 5-2; each of the pressing rods 5-3 is provided on the pressing plate 5-2.
During pressing, the first driving cylinder 5-1 drives the pressing plate 5-2 to perform internal pressure movement, the pressing plate 5-2 drives the plurality of pressing rods 5-3 to simultaneously press the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N, and the second joint surface N-10 cannot be damaged due to contact with the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N during pressing, so that the surface precision of the second joint surface N-10 is ensured; in addition, as the plurality of pressure rods 5-3 are adopted for simultaneous pressing, the simultaneous pressing in multiple positions and multiple directions can be realized, and further the loosening risk after clamping and fixing is reduced.
Referring to fig. 8-9, in the present embodiment, the pressure plate 5-2 is provided with an adjusting hole 5-21, the pressure rod 5-3 is in threaded fit with the adjusting hole 5-21, and the pressure rod 5-3 is provided with a pressure head 5-31 at an end facing the vertical surface 1-1. Therefore, the pressing rod 5-3 can be rotated to ensure that the pressing head 5-31 of the pressing rod 5-3 can be reliably pressed and contacted with the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N, and the problems of poor contact, insufficient pressing force and the like can be avoided. In addition, because the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N is low in size precision, the three pressing rods 5-3 can be adjusted through rotation, the three pressing rods 5-3 can be guaranteed to be in pressing contact with the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N at the same time, the reliability and firmness after positioning and pressing are improved, and the workpiece can be prevented from being loosened due to machining stress.
Preferably, the indenter 5-31 is mushroom-shaped.
In the embodiment, a locknut 5-5 is sleeved on the pressure rod 5-3, and the locknut 5-5 is used for abutting against the pressure plate 5-2. After the pressure head 5-31 of the pressure lever 5-3 is in pressing contact with the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N, the locknut 5-5 is abutted against the pressure plate 5-2 by rotating the locknut 5-5, so that the pressure lever 5-3 can be prevented from loosening, and a locking effect is achieved. The reliability and the firmness after the positioning and the pressing can be further improved, and the processing stress of the workpiece can be prevented from loosening.
Referring to fig. 8, in this embodiment, the output end of the first driving cylinder 5-1 is sequentially provided with a stop pillar 5-11, a triangular plate 5-12 and a threaded pillar 5-13, the center of the pressure plate 5-2 is provided with a triangular hole 5-22 for matching with the triangular plate 5-12, and the threaded pillar 5-13 is sleeved with a compression nut 5-4. As the triangular hole 5-22 of the pressure plate 5-2 is matched with the triangular plate 5-12, the pressure plate 5-2 and the baffle column 5-11 are coaxially fixed and cannot rotate mutually, so that the pressure rods 5-3 are not easy to relatively displace and loosen when contacting with the inner blank pressing wall at the periphery of the outer side of the second transmission hole N-4 of the gear box N.
In this embodiment, the compression nut 5-4 is a hexagonal flange nut. The hexagonal flange surface nut increases the surface area contact with a workpiece, and is firmer and has larger locking force compared with a common nut; meanwhile, cutting scraps can be effectively prevented from entering the nut body, and the service life of the hexagonal flange face nut can be greatly prolonged; in addition, the disassembly and the locking are very convenient.
The utility model can be processed according to the following steps (see also fig. 10-13):
s1, matching a first transmission hole N-2 of a gear box N with a first cylindrical pin 3, and matching two main connecting holes N-3 of the gear box N with two diamond-shaped pins 4 respectively;
s2, pressing the gear box N to make the first combination surface N-1 contact and match with each supporting nail 2 simultaneously;
s3, fixedly mounting a pressure plate 5-2 on the output end of a first driving cylinder 5-1 (specifically, sleeving and positioning a triangular hole 5-22 of the pressure plate 5-2 and a triangular plate 5-12, sleeving a compression nut 5-4 on a threaded column 5-13, and rotating the compression nut 5-4 to enable the compression nut 5-4 to compress the outer side surface of the pressure plate 5-2 and enable the inner side surface of the pressure plate 5-2 to be tightly attached to the outer end of a retaining column 5-11);
s4, starting the first driving cylinder 5-1, driving the pressure plate 5-2 to move by the first driving cylinder 5-1, and pressing the inner blank wall of the gear box N on the periphery of the outer side of the second transmission hole N-4 of the gear box N by each pressure rod 5-3 moving along with the pressure plate 5-2; according to actual needs, the pressure head 5-31 of the pressure rod 5-3 can be ensured to be in pressing contact with the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N by rotating the adjusting pressure rod 5-3, and then the locknut 5-5 on the pressure rod 5-3 is rotated to realize back pressure and locking.
S5, starting a numerical control machine (CNC machining center), and machining a side combining surface N-6, a side positioning hole N-9, a side connecting hole N-7 and a semicircular hole N-8 on the gear box N;
s6, after the machining is finished, the first driving cylinder 5-1 is started, the first driving cylinder 5-1 drives the pressing plate 5-2 to move outwards in a loosening manner, each pressing rod 5-3 moves along with the pressing plate 5-2 and loosens the pressing rod to be separated from the gear box N, and then the pressing nut 5-4 is taken out after being unscrewed; the gearbox N can then be removed from the present jig.
In addition, the positioning precision during machining is improved and machining vibration is reduced. The clamp further comprises a second cylindrical pin 6 and two third cylindrical pins 7. The second cylindrical pin 6 and the two third cylindrical pins 7 are fixed on the vertical surface 1-1. In the first positioning step (S1), the second cylindrical pin 6 is engaged with the third transmission hole N-5 of the gear box N, and the two third cylindrical pins 7 are engaged with the other main connecting holes N-3 of the gear box N, respectively.
The utility model has the following characteristics and is analyzed as follows:
the utility model can be used for accurately positioning, clamping and fixing the finely-machined side joint surface, side positioning holes, side connecting holes and semicircular holes of the gear box, and has multiple functions;
secondly, the first combination surface N-1 of the gear box N is vertically positioned and supported at multiple points simultaneously by simultaneously contacting and matching a plurality of support nails 2 with the first combination surface N-1 of the gear box N; because the first combination surface N-1 of the gear box N and each supporting nail 2 of the clamp are in multi-point contact and are separately matched, positioned and supported, and simultaneously, the supporting points can flexibly avoid the processing position, when the semicircular hole N-8 is processed, the boring cutter does not touch the supporting nails 2 for contact when feeding downwards, the problems of cutter blocking and interference can be avoided, and the cutting can be smoothly arranged;
thirdly, the inner blank wall pressing mechanism 5 adopts the first driving cylinder 5-1 to drive the plurality of pressing rods 5-3 through the pressing plate 5-2 to simultaneously press the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N, and the inner blank wall is in contact with the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N during pressing, so that the second joint surface can be prevented from being crushed, and the surface processing precision and the assembling precision of the second joint surface N-10 can be ensured; in addition, as the plurality of pressure rods 5-3 are adopted for simultaneous pressing, the simultaneous pressing at multiple positions and multiple directions can be realized, and further the loosening risk after clamping and fixing is reduced; meanwhile, the clamp is compressed by the inner wall of the box, and compared with the conventional method that the edges of the outer walls of a plurality of boxes are compressed, the clamp can avoid feed interference and is more compact and smaller in appearance;
fourthly, the pressing of the pressing rod 5-3 is adjustable, so that the pressing head 5-31 of the pressing rod 5-3 can be reliably pressed and contacted with the inner blank wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N, and the problems of poor contact, insufficient pressing force and the like can be avoided; in addition, because the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N is low in size precision, the three pressing rods 5-3 can be adjusted through rotation, the three pressing rods 5-3 can be guaranteed to be in pressing contact with the inner blank wall on the outer periphery of the second transmission hole N-4 of the gear box N at the same time, the reliability and firmness after positioning and pressing are improved, and the workpiece can be prevented from being loosened due to machining stress.
Fifthly, as the pressure lever 5-3 is sleeved with the locknut 5-5, the pressure head 5-31 of the pressure lever 5-3 can be prevented from being pressed and rotated to be loosened; meanwhile, because the triangular hole 5-22 of the pressing plate 5-2 is matched with the triangular plate 5-12, the pressing plate 5-2 and the retaining column 5-11 are coaxially fixed and cannot rotate mutually, so that the pressing rods 5-3 are not easy to relatively displace and loosen when contacting with the inner blank pressing wall on the periphery of the outer side of the second transmission hole N-4 of the gear box N.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The utility model provides a gear box finish machining anchor clamps which characterized in that: comprises a clamp seat (1), a plurality of supporting nails (2), a first cylindrical pin (3), a diamond pin (4) and an inner blank wall pressing mechanism (5);
the clamp seat (1) is provided with a vertical surface (1-1);
the supporting nail (2) is arranged on the vertical surface (1-1) and is used for being in contact fit with a first combining surface (N-1) of the gear box (N);
the first cylindrical pin (3) is arranged on the vertical surface (1-1) and is used for being matched with a first transmission hole (N-2) of the gear box (N);
the diamond-shaped pin (4) is arranged on the vertical surface (1-1) and is used for being matched with a main connecting hole (N-3) of the gear box (N);
the inner blank wall pressing mechanism (5) comprises a first driving cylinder (5-1), a pressing plate (5-2) and a plurality of pressing rods (5-3);
the output end of the first driving cylinder (5-1) can penetrate through a second transmission hole (N-4) of the gear box (N) and then is detachably and fixedly connected with the pressure plate (5-2); each pressure lever (5-3) is arranged on the pressure plate (5-2).
2. A gearbox finishing jig as defined in claim 1 wherein: the supporting pins (2) are four in number.
3. A gearbox finishing jig as defined in claim 1 wherein: the diamond-shaped pins (4) are two.
4. A gearbox finishing jig as defined in claim 1 wherein: the number of the compression rods (5-3) is three.
5. A gearbox finishing jig as defined in any one of claims 1 to 4 wherein: the pressure plate (5-2) is provided with an adjusting hole (5-21), the pressure rod (5-3) is in threaded fit with the adjusting hole (5-21), and the pressure head (5-31) is arranged at one end of the pressure rod (5-3) facing the vertical surface (1-1).
6. A gearbox finishing jig as set forth in claim 5 wherein: the pressure lever (5-3) is sleeved with a locknut (5-5), and the locknut (5-5) is used for being abutted against the pressure plate (5-2).
7. A gearbox finishing jig as defined in claim 1 wherein: the output end of the first driving cylinder (5-1) is outwards provided with a retaining column (5-11), a triangular plate (5-12) and a threaded column (5-13) in sequence, the center of the pressing plate (5-2) is provided with a triangular hole (5-22) matched with the triangular plate (5-12), and the threaded column (5-13) is sleeved with a compression nut (5-4).
8. A gearbox finishing jig as set forth in claim 7 wherein: the compression nut (5-4) adopts a hexagonal flange nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577941.3U CN215317242U (en) | 2021-07-12 | 2021-07-12 | Finish machining clamp for gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577941.3U CN215317242U (en) | 2021-07-12 | 2021-07-12 | Finish machining clamp for gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215317242U true CN215317242U (en) | 2021-12-28 |
Family
ID=79566677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121577941.3U Active CN215317242U (en) | 2021-07-12 | 2021-07-12 | Finish machining clamp for gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215317242U (en) |
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2021
- 2021-07-12 CN CN202121577941.3U patent/CN215317242U/en active Active
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