CN102423855B

CN102423855B - Fixture

Info

Publication number: CN102423855B
Application number: CN 201110320136
Authority: CN
Inventors: 谭冬桂
Original assignee: Zhuzhou Nanfang Gas Turbine Packaging and Installation Co Ltd
Current assignee: Zhuzhou Nanfang Gas Turbine Packaging and Installation Co Ltd
Priority date: 2011-10-20
Filing date: 2011-10-20
Publication date: 2013-12-25
Anticipated expiration: 2031-10-20
Also published as: CN102423855A

Abstract

The invention provides a fixture. The fixture comprises a fixed disk, a first bearing and a second bearing which are fixed arranged on the fixed disk at intervals, and a rotating part which is rotatably and fixedly arranged between the first bearing and the second bearing, wherein, the first side wall and second side wall of the rotating part are oppositely arranged, and a hollow accommodating hole is arranged between the first side wall and the second side wall; a workpiece to be held is arranged in the accommodating hole, a locating block and a pressing block are oppositely and respectively arranged on the first side wall and the second side wall, and the locating block and the pressing block are respectively against the first section and second section of the workpiece; and the third side wall and fourth side wall of the rotating part are oppositely arranged, a first supporting screw and a second supporting screw are respectively arranged on the third side wall and the fourth side wall in a staggered manner, and the first supporting screw and the second supporting screw are respectively against the upper side surface and bottom side surface of the workpiece. By adopting the fixture, the machining precision of the workpiece is improved and the scrap rate of parts is reduced, and meanwhile, the production cost is lowered, the production efficiency is improved, and mass production is realized.

Description

Fixture

Technical field

The present invention relates to the part manufacture field, especially, relate to a kind of fixture for processing work.

Background technology

As shown in Figure 1, processed work comprises an axle, and this axle comprises side a and b.Wish is processed into respectively shape as shown in Figure 2 to the side a and b of this axle, and current prior art is processed this type of workpiece and all carried out at Pu Cheshang.The main process of general this type of workpiece of Vehicle Processing is: at first with the soft pawl of general car, clamp the A end place of axle, then the B end is processed.Then workpiece is unloaded, reexamine the axiality of A end and B end, as qualified with the axiality of B end as the A end, hold and is processed A at the B end place of clamping axle with soft pawl again.After processing, the A end unloads the axiality that workpiece reexamines A end and B end, until meet the demands.

But, adopt above-mentioned general car device to be processed workpiece, need carry out clamping twice to this workpiece, and need carry out the measurement of twice axiality, often there is very large error in the process of measuring axiality, therefore, cause a part of workpiece to require to scrap more because axiality does not reach, thereby the increase production cost, and production efficiency is very low.

Summary of the invention

The object of the invention is to provide a kind of fixture, and to solve, error sandwiched in prior art is large, production cost is high and inefficient technical problem.

For achieving the above object, according to an aspect of the present invention, a kind of fixture is provided, fixture comprises that fixed disk and compartment of terrain are fixedly installed in the first bearing and second bearing of fixed disk, and fixture also comprises revolving part, and revolving part rotatably is fixedly installed between the first bearing and the second bearing, wherein, revolving part comprises the first side wall, the second sidewall, the 3rd sidewall and the 4th sidewall, and the first side wall is relative with the second sidewall, and is provided with the accommodation hole of a hollow between the first side wall and the second sidewall; Workpiece to be held is arranged in accommodation hole, and the first side wall and the second sidewall relatively are respectively arranged with locating piece and compact heap, and locating piece and compact heap are supported respectively first paragraph and the second segment of workpiece; The 3rd sidewall of revolving part is relative with the 4th sidewall, and the 3rd sidewall and the 4th sidewall are respectively arranged with the first supporting screw and the second supporting screw with staggering, and the first supporting screw and the second supporting screw are resisted against respectively upper side and the bottom side of workpiece.

Further, the first bearing is provided with first installing hole run through; The second bearing is provided with second installing hole run through; The first side wall of revolving part and the second sidewall are respectively arranged with coaxial the first installation portion and the second installation portion, and the first installation portion and the second installation portion movable sleeve respectively are placed in the first installing hole and the second installing hole.

Further, the first installation portion and the second installation portion are provided with respectively and connect coaxially the first axis hole and the second axis hole that connects accommodation hole, and locating piece and compact heap are connected with the first axis hole and the second axis hole adjustable ground respectively.

Further, locating piece comprises the first V-type location division and is connected in the first connecting portion of the first V-type location division, the first connecting portion is sheathed in the first axis hole, expose to the first axis hole and be positioned at accommodation hole to the first V-type location division backstop, and the first end of workpiece is supported in the first V-type location division.

Further, the first axis hole one first dog screw that has been threaded, the first dog screw compresses the first connecting portion.

Further, the end face of the first connecting portion is formed with one first groove, and the first dog screw fixedly presses in the first groove.

Further, compact heap comprises the second V-type location division and is connected in the second connecting portion of the second V-type location division, the second connecting portion is sheathed in the second axis hole, expose to the second axis hole and be positioned at accommodation hole to the second V-type location division backstop, and the second V-type location division is resisted against the second end of workpiece.

Further, the second axis hole one second dog screw that has been threaded, the second dog screw compresses the second connecting portion.

Further, the end face of the second connecting portion is formed with one second groove, and the second dog screw fixedly presses in the second groove.

Further, fixture also comprises operating parts, and operating parts comprises a guide, and guide penetratingly is fixedly installed in the second bearing, and operating parts also comprises a positioning rod, and backstay operationally is sheathed in guide; The second sidewall of revolving part is respectively arranged with the first access and the second adjusting hole in the both sides of the second installation portion, the backstay in guide operationally is sheathed on the first access or the second adjusting hole.

Further, guide comprises an end wall, and backstay comprises a head and is connected in the contraction section of head; Contraction section is equipped with an elasticity thing, and the backstay that is equipped with the elasticity thing runs through end wall, and the two ends of elasticity thing elasticity are respectively supported between end wall and head.

The present invention has following beneficial effect:

By the present invention, can improve the machining accuracy of workpiece, the part scrappage reduces, and reduces production costs simultaneously and enhances productivity, and realizes batch production.

Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below, with reference to figure, the present invention is further detailed explanation.

The accompanying drawing explanation

The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:

Fig. 1 is the processed front structural representation of part in background technology;

Fig. 2 is the structural representation of the part in Fig. 1 after processed;

Fig. 3 is the generalized section of the fixture of the preferred embodiment of the present invention;

Fig. 4 is the structural representation of the first bearing of the preferred embodiment of the present invention;

Fig. 5 is the structural representation of the second bearing of the preferred embodiment of the present invention;

Fig. 6 is the structural representation of the revolving part of the preferred embodiment of the present invention;

Fig. 7 is the structural representation of the locating piece of the preferred embodiment of the present invention;

Fig. 8 is the structural representation of the compact heap of the preferred embodiment of the present invention;

Fig. 9 is the structural representation of the guide of the preferred embodiment of the present invention;

Figure 10 is the structural representation of the backstay of the preferred embodiment of the present invention; And

Figure 11 is that the fixture of the preferred embodiment of the present invention is for the fixing structural representation of workpiece to be machined.

The specific embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.

Referring to Fig. 3, fixture comprises fixed disk 1, is fixedly installed symmetrically the first bearing 2 and the second bearing 3 on fixed disk 1.For fixed disk 1 is installed on to the lathe (not shown), the position, center of fixed disk 1 is provided with a circular hole 14, in the interior secure fit of this circular hole 14, one lining 16 is arranged.

Please in conjunction with referring to Fig. 4, the first bearing 2 comprises the first fixed edge 21, and these first fixed edge, 21 bendings have extended to form one first mounting edge 23.The first mounting edge 23 is perpendicular to the first fixed edge 21.The lateral wall of the first mounting edge 23 is provided with one first boss 231, and the first mounting edge 23 is provided with the first installing hole 233 that runs through this first boss 231.

Please in conjunction with referring to Fig. 5, the second bearing 3 comprises the second fixed edge 31, and these second fixed edge, 31 bendings have extended to form one second mounting edge 33.The second mounting edge 33 is perpendicular to the second fixed edge 31.The lateral wall of the second mounting edge 33 is provided with one second boss 331, and the second mounting edge 33 is provided with the second installing hole 333 that runs through this second boss 331.The second mounting edge 33 also is provided with handle hole 335 and the first guide screw thread fixing hole 337 that runs through this second mounting edge 33, and handle hole 335 and the first guide screw thread fixing hole 337 are positioned at the same side of the second boss 331.

Please refer again to Fig. 3, the first fixed edge 21 and the second fixed edge 31 are fixedly mounted on fixed disk 1.Preferably, in the present embodiment, fixed disk 1 is provided with a plurality of threaded mounting holes, and the first fixed edge 21 and the second fixed edge 31 are respectively arranged with the first screw thread fixing hole corresponding with threaded mounting hole and the second screw thread fixing hole.The first screw thread fixing hole threaded mounting hole corresponding with the first screw thread fixing hole by the first screw 11 connects, the second screw thread fixing hole threaded mounting hole corresponding with the second screw thread fixing hole by the second screw 13 connects, thereby the first bearing 2 and the second bearing 3 are fixedly installed in to fixed disk 1 symmetrically.Be provided with a revolving part 4 between the first bearing 2 and the second bearing 3.

Please in conjunction with referring to Fig. 6, revolving part 4 comprises the first side wall, the second sidewall, the 3rd sidewall and the 4th sidewall, and wherein, the first side wall is relative with the second sidewall, and the 3rd sidewall is relative with the 4th sidewall.Be provided with the accommodation hole 401 of a hollow between the first side wall and the second sidewall.Preferably, this accommodation hole 401 is step-like hole.The first side wall of revolving part 4 is vertically installed with the first installation portion 41, and the first side wall is provided with first axis hole 411 that runs through the first installation portion 41.The first axis hole 411 is positioned at one section of the first installation portion 41 for thread segment.The first axis hole 411 connects with the large nose end of accommodation hole 401.The second sidewall of revolving part 4 is vertically installed with second installation portion 43 coaxial with the first installation portion 41, and the second sidewall is provided with second axis hole 431 that runs through the second installation portion 43.The second axis hole 431 is positioned at one section of the second installation portion 43 for thread segment.The second axis hole 431 connects with the small bore end of accommodation hole 401.The second sidewall of revolving part 4 also is provided with the first access 40 and the second adjusting hole 42, and the first access 40 and the second adjusting hole 42 are distributed in the both sides of the second installation portion 43 symmetrically.The first installation portion 41 of revolving part 4 and the second installation portion 43 are sheathed on respectively in the second installing hole 333 of the first installing hole 233 of the first bearing 2 and the second bearing 3 actively.Revolving part 4 the 3rd sidewall and the 4th sidewall are respectively arranged with adjustable the first supporting screw 44 and the second supporting screw 49 staggered, and the first supporting screw 44 and the second supporting screw 49 are positioned at same plane.The first axis hole 411 and the interior adjustable ground respectively of the second axis hole 431 at revolving part 4 are provided with locating piece 45 and compact heap 47.

Please in conjunction with referring to Fig. 7, locating piece 45 comprises the first V-type location division 451 and is connected in the first connecting portion 455 of the first V-type location division 451.The first V-type location division 451 is provided with one first convex shoulder 453.The free-ended end face of the first connecting portion 455 is formed with one first groove 457.The first connecting portion 455 radially is provided with the first pin hole 459, and the part of this first pin hole 459 belongs to the first groove 457.Locating piece 45 is pushed in the first axis hole 411 of the first installation portion 41 from the large nose end of accommodation hole 401, and first convex shoulder 453 backstop the first V-type location divisions 451 of locating piece 45 enter in the first axis hole 411.The first connecting portion 455 of locating piece 45 is sheathed in the first axis hole 411 of the first installation portion 41 actively.Because the first installation portion 41 is sheathed in the first installing hole 233 of the first bearing 2 actively, the first dog screw 46 is threadedly connected to the thread segment of the first axis hole 411 of the first installation portion 41.The first dog screw 46 comprises the first head of screw 461.The first dog screw 46 is sheathed in the first axis hole 411 of the first installation portion 41 from outside to inside, and then the first head of screw 461 is sheathed in first groove 457 of the first connecting portion 455 of locating piece 45.The sidewall of the first head of screw 461 is provided with the first recessed circle 463.The first pin hole 459 that this first recessed circle 463 and locating piece 45 arrange over against.The first pin 450 is arranged in the first pin hole 459, is used for backstop the first dog screw 46.

Please in conjunction with referring to Fig. 8, compact heap 47 comprises the second V-type location division 471 and is connected in the second connecting portion 475 of the second V-type location division 471.The second V-type location division 471 is provided with one second convex shoulder 473.The free-ended end face of the second connecting portion 475 is formed with one second groove 477.The second connecting portion 475 radially is provided with the second pin hole 479, and the part of this second pin hole 479 belongs to the second groove 477.Locating piece 45 is pushed in the second axis hole 431 of the second installation portion 43 from the small bore end of accommodation hole 401, and second convex shoulder 473 backstop the second V-type location divisions 471 of locating piece 45 enter in the second axis hole 431.The second connecting portion 475 of locating piece 45 is sheathed in the second axis hole 431 of the second installation portion 43 actively.Because the second installation portion 43 is sheathed in the second installing hole 333 of the second bearing 3 actively, the second dog screw 48 is threadedly connected to the thread segment of the second axis hole 431 of the second installation portion 43.The second dog screw 48 comprises the second head of screw 481.The second dog screw 48 is sheathed in the second axis hole 431 of the second installation portion 43 from outside to inside, and then the second head of screw 481 is sheathed in second groove 477 of the second connecting portion 475 of compact heap 47.The sidewall of the second head of screw 481 is provided with the second recessed circle 483.The second pin hole 479 that this second recessed circle 483 and compact heap 47 arrange over against.The second pin 470 is arranged in the second pin hole 479, is used for backstop the second dog screw 48.The second V-type location division 471 of compact heap 47 and the first V-type location division 451 of locating piece 45 over against.

After revolving part 4 is installed between the first bearing 2 and the second bearing 3, the first access 40 of the handle hole of the second mounting edge 31 of the second bearing 3 335 and revolving part 4 over against.The second mounting edge 31 is installed with a guide 5.

Please in conjunction with referring to Fig. 9, guide 5 comprises an end wall 53 and guide hole 55.End wall 53 is provided with a through hole, and guide hole 55 connects with through hole.The interior movable sleeve of guide 5 is equipped with a positioning rod 57.

Please in conjunction with referring to Figure 10, backstay 57 comprises a head 571 and is connected in the contraction section 573 of head 571.Contraction section 573 is provided with a locating hole 572 that radially runs through sidewall.The sidewall of guide 5 is provided with the 3rd convex shoulder 51, the three convex shoulders 51 and is provided with the second guide screw thread fixing hole 511.The sidewall of guide 5 is provided with the 3rd convex shoulder 51, the three convex shoulders 51 and is provided with the second guide screw thread fixing hole 511.In the present embodiment, guide 5 and backstay 57 have formed the operating parts of fixture of the present invention.

Please, in conjunction with referring to Figure 11, at contraction section 573, be equipped with an elasticity thing 574.Preferably, this elasticity thing 574 is spring.The through hole that the contraction section 573 that is equipped with elasticity thing 574 is arranged through guide hole 55 and end wall 53 successively, contraction section 573 is provided with a section of locating hole 572 and exposes to guide 5.Locating hole 572 places of contraction section 573 are provided with a gear-stopping bar 570, with the past interior movement of guide 5 of backstop contraction section 573.Be placed on the two ends of elasticity thing 574 of contraction section 573 respectively flexibly in the wall of the head 571 of the end wall 53 of supporting guide 5 and backstay 57.The free end of contraction section 573 is installed with a lever 59.The head 571 of the backstay 57 that is nested with in guide 5 is placed on to the handle hole 335 of the second mounting edge 31 and the first access 40 of revolving part 4 successively.The first guide screw thread fixing hole 337 that this second guide screw thread fixing hole 511 and the second mounting edge 31 arrange over against.Be screwed into successively the second guide screw thread fixing hole 511 and the first guide screw thread fixing hole 337 with guide hold-down screw 50, thereby guide 5 be fixedly installed in to the second fixed edge 31 of the second bearing 3.

Please refer again to Figure 11, below the main process of setting forth fixture processing parts of the present invention.Workpiece 7 to be held comprises an axle 71 and is vertically connected at the afterbody 73 of this axle 71.Axle 71 comprises first end and the second end.The axle of workpiece 7 71 is fixedly installed in accommodation hole 401 perpendicular to revolving part 4, and first end is towards the outside of accommodation hole 401.Particularly, tighten the first dog screw 46 and the second dog screw 48, the first dog screw 46 and the second dog screw 48 make respectively locating piece 45 and compact heap 47 workpiece pressings 7, now, axle 71 presses on the V-type groove of the first V-type location division 451 of locating piece 45, and afterbody 73 presses on the V-type groove of the second V-type location division 471 of compact heap 47.Then, regulate respectively the first supporting screw 44 and the second supporting screw 49, make the first supporting screw 44 and the second supporting screw 49 upper side and the downside from the afterbody 73 of upper and lower both direction workpiece pressing 7.Then, the head 571 of backstay 57 is placed in the first access 40 of the handle hole 335 of the second mounting edge 31 and revolving part 4 successively because of the elastic force effect of elasticity thing 574, thereby the revolving part 4 that workpiece 7 will be installed is fixed between the first bearing 2 and the second bearing 3.Then, make the center of fixture coaxial with the center of lathe, then the first end of workpiece 7 is processed.After processing first end, by operating operation handle 59 outward, the interior extraction of the first access 40 by backstay 57 from handle hole 335 and the revolving part 4 of the second mounting edge 31.Now, elasticity thing 574 is in compressive state.Then, operate the first supporting screw 44 and the second supporting screw 49, the first supporting screw 44 and the second supporting screw 49 are all rotated around the axle center of fixed disk 1, and mutual reversing of position.Now, driven rotary part 4 has rotated 180 °.Decontrol lever 59, the head 571 of backstay 57 is placed in the first access 40 of the handle hole 335 of the second mounting edge 31 and revolving part 4 successively because of the elastic force effect of elasticity thing 574, finally reprocesses the second end of workpiece 7 again.

From above process, to the processing that is similar to workpiece 7 without carrying out clamping twice, and without the measurement of carrying out twice axiality.Therefore, greatly reduce manufacturing tolerance, improved the machining accuracy of part, and improved production efficiency, realized batch production.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a fixture, it is characterized in that, described fixture comprises that fixed disk (1) and compartment of terrain are fixedly installed in the first bearing (2) and second bearing (3) of described fixed disk (1), described fixture also comprises revolving part (4), described revolving part (4) rotatably is fixedly installed between described the first bearing (2) and described the second bearing (3), wherein

Described revolving part (4) comprises the first side wall, the second sidewall, the 3rd sidewall and the 4th sidewall, and described the first side wall is relative with described the second sidewall, and is provided with the accommodation hole (401) of a hollow between described the first side wall and described the second sidewall;

Workpiece to be held (7) is arranged in described accommodation hole (401), described the first side wall and described the second sidewall relatively are respectively arranged with locating piece (45) and compact heap (47), and described locating piece (45) and compact heap (47) are supported respectively first paragraph and the second segment of described workpiece (7);

Described the 3rd sidewall of described revolving part (4) is relative with described the 4th sidewall, described the 3rd sidewall and described the 4th sidewall are respectively arranged with the first supporting screw (44) and the second supporting screw (49) with staggering, and described the first supporting screw (44) and the second supporting screw (49) are resisted against respectively upper side and the bottom side of described workpiece (7).

2. fixture according to claim 1, is characterized in that, described the first bearing (2) is provided with first installing hole (233) run through;

Described the second bearing (3) is provided with second installing hole (333) run through;

The described the first side wall of described revolving part (4) and described the second sidewall are respectively arranged with coaxial the first installation portion (41) and the second installation portion (43), and described the first installation portion (41) and described the second installation portion (43) movable sleeve respectively are placed in described the first installing hole (233) and described the second installing hole (333).

3. fixture according to claim 2, it is characterized in that, described the first installation portion (41) and described the second installation portion (43) are respectively arranged with and connect coaxially the first axis hole (411) and the second axis hole (431) that connects described accommodation hole (401), and described locating piece (45) and described compact heap (47) are connected with described the first axis hole (411) and described the second axis hole (431) adjustable ground respectively.

4. fixture according to claim 3, it is characterized in that, described locating piece (45) comprises the first V-type location division (451) and is connected in first connecting portion (455) of described the first V-type location division (451), described the first connecting portion (455) is sheathed in described the first axis hole (411), expose to described the first axis hole (411) and be positioned at described accommodation hole (401) to described the first V-type location division (451) backstop, and the first end of described workpiece (7) is supported in described the first V-type location division (451).

5. fixture according to claim 4, is characterized in that, described the first axis hole (411) one first dog screw (46) that has been threaded, and described the first dog screw (46) compresses described the first connecting portion (455).

6. fixture according to claim 5, is characterized in that, the end face of described the first connecting portion (455) is formed with one first groove (457), and described the first dog screw (46) fixedly presses in described the first groove (457).

7. fixture according to claim 4, it is characterized in that, described compact heap (47) comprises the second V-type location division (471) and is connected in second connecting portion (475) of described the second V-type location division (471), described the second connecting portion (475) is sheathed in described the second axis hole (431), expose to described the second axis hole (431) and be positioned at described accommodation hole (401) to described the second V-type location division (471) backstop, and described the second V-type location division (471) is resisted against the second end of described workpiece (7).

8. fixture according to claim 7, is characterized in that, described the second axis hole (431) one second dog screw (48) that has been threaded, and described the second dog screw (48) compresses described the second connecting portion (475).

9. fixture according to claim 8, is characterized in that, the end face of described the second connecting portion (475) is formed with one second groove (477), and described the second dog screw (48) fixedly presses in described the second groove (477).

10. fixture according to claim 2, it is characterized in that, described fixture also comprises operating parts, described operating parts comprises a guide (5), described guide (5) penetratingly is fixedly installed in described the second bearing (3), described operating parts also comprises a positioning rod (57), and described backstay (57) operationally is sheathed in described guide (5);

Described second sidewall of described revolving part (4) is respectively arranged with the first access (40) and the second adjusting hole (42) in the both sides of described the second installation portion (43), the described backstay (57) in described guide (5) operationally is sheathed on described the first access (40) or described the second adjusting hole (42).

11. fixture according to claim 10, is characterized in that, described guide (5) comprises an end wall (53), and described backstay (57) comprises a head (571) and is connected in the contraction section (573) of described head (571);

Described contraction section (573) is equipped with an elasticity thing (574), the described backstay (57) that is equipped with described elasticity thing (574) runs through described end wall (53), and the two ends of described elasticity thing (574) elasticity are respectively supported between described end wall (53) and described head (571).