CN113021033A - Clamp for finish machining of gearbox shell and clamping method - Google Patents
Clamp for finish machining of gearbox shell and clamping method Download PDFInfo
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- CN113021033A CN113021033A CN202110310575.3A CN202110310575A CN113021033A CN 113021033 A CN113021033 A CN 113021033A CN 202110310575 A CN202110310575 A CN 202110310575A CN 113021033 A CN113021033 A CN 113021033A
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a fixture for finish machining of a gearbox shell, which comprises a base, a transition plate, a connecting plate, a first pressing assembly and an outer circle holding assembly, wherein the first pressing assembly and the outer circle holding assembly are connected to the top surface of the base; the top surface of crossing the cab apron is connected with the window face of gearbox casing, the bottom surface of crossing the cab apron with the top surface of connecting plate is connected, the bottom surface of connecting plate with the base is connected, and is a plurality of the top of first compress tightly the subassembly compress tightly in the top surface of crossing the cab apron, the excircle is held tightly the subassembly and is pressed from both sides tightly on the excircle of gearbox casing. And a clamping method of the clamp. The invention has the beneficial effects that: the transition plate is adopted for connection, stable clamping and effective clamping and supporting are realized, the size and the precision of a finish machining hole of the gearbox shell can be guaranteed, and the method is stable, reliable and good in consistency.
Description
Technical Field
The invention relates to a clamp, in particular to a clamp for machining a gearbox shell.
Background
Among the prior art, during the fine machining (processing some holes, the face that the required precision is higher) of gearbox casing, the window face is downward to window face and two locating pin location, do not have suitable position of compressing tightly, if directly compress tightly gearbox casing itself, the work piece presss from both sides tightly, and the manual work can rock, and it is yielding to process the high accuracy hole, can process out the ellipse, and the axiality in hole, the axis depth of parallelism all can't guarantee.
Like application number 201910170666.4, a gearbox casing adds clamping apparatus which characterized in that: the gearbox shell machining clamp comprises a bottom plate (1), a vertical plate (2), a rib plate (3), a rectangular opening (4), a special-shaped opening (5), an air cylinder (6) and a pressure lever (7); the bottom plate (1) is of a rectangular plate structure, and four corners are chamfered; the vertical plate (2) is of a rectangular plate structure, is welded at the middle position on the top side surface of the bottom plate (1), and is subjected to chamfering treatment at the left and right sharp corners at the top; the rectangular opening (4) is formed below the vertical plate (2); the cylinders (6) are fixed on the front side surface of the vertical plate (2) through screws and are arranged on the periphery of the special-shaped opening (5).
On riser 2 is put to the transmission housing through the location of locating pin, control depression bar 7 through cylinder 6 and press from both sides the transmission housing tightly, directly process the transmission housing, be inside cavity because of the transmission housing to there are a plurality of structures such as round hole, the structure is comparatively complicated, only builds compressing tightly of list, can't guarantee the machining precision.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to solve the problem that the machining precision can not be guaranteed to the clamping fixture and the mode in the fine machining process of the gearbox shell at present.
The invention solves the technical problems through the following technical means:
the fixture for finish machining of the gearbox shell comprises a base, a transition plate, a connecting plate, a first pressing assembly and an outer circle holding assembly, wherein the first pressing assembly and the outer circle holding assembly are connected to the top surface of the base;
the top surface of crossing the cab apron is connected with the window face of gearbox casing, the bottom surface of crossing the cab apron with the top surface of connecting plate is connected, the bottom surface of connecting plate with the base is connected, and is a plurality of the top of first compress tightly the subassembly compress tightly in the top surface of crossing the cab apron, the excircle is held tightly the subassembly and is pressed from both sides tightly on the excircle of gearbox casing.
The invention aims at the situation that no proper compression point exists in the fine machining of the gearbox shell, the transition plate is connected through the transition plate, the transition plate is compressed through the first compression assembly, the excircle enclasping assembly enclasping excircle enclasping, stable clamping and effective clamping and supporting are realized, and the flatness of a machining support surface is ensured by improving the precision of the transition plate and the connecting plate, so that the size and the precision of a fine machining hole of the gearbox shell can be ensured, and the fine machining hole is stable, reliable and better in consistency.
Preferably, the transition plate comprises a transition plate body, a first cylindrical positioning pin and a first rhombic positioning pin, the first cylindrical positioning pin and the first rhombic positioning pin are connected with the window surface of the gearbox shell, the transition plate body is provided with a plurality of first positioning pin holes, the first cylindrical positioning pin and the first rhombic positioning pin are located in the first positioning pin holes, and the transition plate body is provided with a plurality of first connecting screw holes connected with the window surface of the gearbox shell.
Preferably, the connecting plate includes the connecting plate body, with the second cylinder locating pin and the second rhombus locating pin of the first locating pin jogged joint of cab apron body, the third locating pin of being connected with the base, the connecting plate body has rectangular hole and circular port, second cylinder locating pin is connected in circular port, the connection of second rhombus locating pin is in rectangular port, the connecting plate body has the pinhole that is used for connecting the third locating pin, the connecting plate body has a plurality of second connection screw holes of being connected with the base.
The transition plate body and the connecting plate body are both steel pieces, and are subjected to heat treatment, so that the deformation and the fine grinding processing are ensured, and the flatness and the parallelism of the transition plate body and the connecting plate body are ensured; the upper surface and the lower surface of the base are precisely machined, so that the flatness and the parallelism of the base are guaranteed, and the rigidity, the flatness and the parallelism of the whole base can be effectively guaranteed.
Preferably, the first pressing component comprises a first supporting rod, a first screw rod, a first pressing plate and a first locking nut, the first supporting rod is connected to the first screw rod at intervals on the base, one end of the first pressing plate is hinged to the top end of the first supporting rod, a waist-shaped hole is formed in the other end of the first pressing plate, the top end of the first screw rod penetrates through the waist-shaped hole, and the first locking nut is connected with the first screw rod to press the first pressing plate onto the transition plate.
Preferably, the gearbox casing further comprises a second pressing component, the top end of the second pressing component is pressed at the middle of the gearbox casing, the second pressing component comprises a second supporting rod, a second screw rod, a second pressing plate and a second locking nut, the second supporting rod and the second screw rod are connected to the base at intervals, one end of the second pressing plate is hinged to the top end of the second supporting rod, the other end of the second pressing plate is provided with a waist-shaped hole, the top end of the second screw rod penetrates through the waist-shaped hole, and the second locking nut is connected with the second screw rod to press the second pressing plate at the middle of the gearbox casing.
Preferably, the number of the first pressing assemblies is four, the number of the outer circle holding assemblies is two, and the two outer circle holding assemblies are symmetrically arranged along a central vertical symmetrical plane of the gearbox shell.
The first pressing component and the second pressing component are pressed by pressing plates, and the first pressing components are symmetrically arranged and stressed uniformly; the second compresses tightly subassembly and compresses tightly middle waist position, plays supplementary effect of compressing tightly.
Preferably, the excircle enclasping component includes supporting shoe, lifting screw, lifting nut, butt joint board, the bottom of supporting shoe is connected the base, the side of supporting shoe has U type notch, the top has L type notch, the lifting nut is located the U type inslot of supporting shoe, the vertical side that passes U type groove of lifting screw, lifting screw's top be located L type notch and with the one end of butt joint board is articulated, lifting screw's bottom with lifting nut threaded connection, the middle part of butt joint board with the top of supporting shoe is articulated, the other end of butt joint board and the excircle butt of gearbox casing.
Preferably, the lifting screw rod is connected with the U-shaped groove through a horizontal threaded hole, and the U-shaped groove is connected with the L-shaped groove through a horizontal threaded hole.
Preferably, still include the auxiliary stay post, the auxiliary stay post is including a support section of thick bamboo, auxiliary stay pole, spring, locking bolt, there is the cavity in the support section of thick bamboo, top trompil, the bottom of a support section of thick bamboo is connected on the base, place in the shown support section of thick bamboo in the spring, the auxiliary stay pole is the cylinder pole that middle part radius is greater than both ends radius, in the top of auxiliary stay pole stretched into the spring, the top was stretched out by the top trompil of a support section of thick bamboo, locking bolt connects the radial screw hole and the butt of a support section of thick bamboo are in the middle part of auxiliary stay pole.
The auxiliary supporting columns are internally provided with springs, so that the automatic lifting function is realized, and the auxiliary supporting columns can be effectively contacted with a workpiece supporting surface relative to manually adjusted auxiliary supporting columns; and the manual adjustment is not needed (the manual adjustment is carried out, the force is large, the workpiece is easy to tilt, the force is small, the workpiece cannot be effectively contacted, and the auxiliary supporting effect cannot be realized).
The invention also provides a clamping method of the clamp for finish machining of the gearbox shell, wherein before clamping, the window surface of the gearbox shell is connected with the transition plate, then the window surface is hoisted to the position above the connecting plate and is connected with the connecting plate, the transition plate is compressed by the first compressing assemblies, and the excircle enclasping assembly is clamped on the excircle of the gearbox shell.
And (5) finishing the assembly of the gearbox clamp, and fixing the clamp on a horizontal machining center workbench.
The invention has the advantages that:
(1) aiming at the fact that a proper compression point does not exist in the gearbox shell finish machining, the transition plate is connected through the first compression assembly, the transition plate is compressed through the first compression assembly, the excircle enclasping assembly enclasping excircle enclasping, stable clamping and effective clamping and supporting are achieved, and the flatness of a machining supporting surface is guaranteed by improving the precision of the transition plate and the precision of a connecting plate, so that the size and the precision of a finish machining hole of the gearbox shell can be guaranteed, stability and reliability are achieved, and the consistency is good;
(2) the transition plate body and the connecting plate body are both steel pieces, and the transition plate body and the connecting plate body are subjected to heat treatment to ensure difficult deformation, finish grinding and guarantee the flatness and parallelism of the transition plate body and the connecting plate body; the upper surface and the lower surface of the base are finely processed, so that the flatness and the parallelism of the base are ensured, and the rigidity, the flatness and the parallelism of the whole base can be effectively ensured;
(3) the first pressing component and the second pressing component are pressed by pressing plates, and the first pressing components are symmetrically arranged and stressed uniformly; the second pressing component presses the middle waist part to play a role in auxiliary pressing;
(4) the auxiliary supporting columns are internally provided with springs, so that the automatic lifting function is realized, and the auxiliary supporting columns can be effectively contacted with a workpiece supporting surface relative to manually adjusted auxiliary supporting columns; and the manual adjustment is not needed (the manual adjustment is carried out, the force is large, the workpiece is easy to tilt, the force is small, the workpiece cannot be effectively contacted, and the auxiliary supporting effect cannot be realized).
Drawings
FIG. 1 is a schematic structural diagram of a fixture for finishing a transmission housing according to an embodiment of the invention;
FIG. 2 is a top schematic view of a transition plate;
FIG. 3 is a schematic bottom view of a transition plate;
FIG. 4 is a schematic illustration of the transmission housing being connected to the transition plate;
FIG. 5 is a schematic view of a connection plate;
FIG. 6 is a top view of a fixture for finishing a transmission housing;
FIG. 7 is a cross-sectional view taken at A-A in FIG. 6;
fig. 8 is a schematic structural view of the first hold-down assembly 4;
FIG. 9 is a front view of a fixture for finishing a transmission housing;
FIG. 10 is a cross-sectional view taken at B-B of FIG. 9;
FIG. 11 is a cross-sectional view taken at C-C of FIG. 9;
FIG. 12 is a schematic view of a fixture clamp for finishing the transmission housing;
FIG. 13 is a schematic view of a fixture clamp for finishing the transmission housing;
reference numbers in the figures:
1. a base;
2. a transition plate; 21. a transition plate body; 22. a first cylindrical locating pin; 23. a first diamond-shaped locating pin; 24. a first dowel hole; 25. a first connection screw hole;
3. a connecting plate; 31. a connecting plate body; 32. a second cylindrical locating pin; 33. a second diamond-shaped locating pin; 34. a third positioning pin; 35. a second connection screw hole; 36. a groove;
4. a first hold-down assembly; 41. a first support bar; 42. a first screw; 43. a first platen; 44. a first lock nut;
5. the outer circle clasping component; 51. a support block; 52. a lifting screw; 53. a lifting nut; 54. a butt joint plate; 55. fastening a bolt;
6. a second hold-down assembly; 61. a second support bar; 62. a second screw; 63. a second platen; 64. a second lock nut;
7. a first auxiliary support column; 71. a support cylinder; 72. an auxiliary support bar; 73. a spring; 74. locking the bolt;
8. a second auxiliary support column;
9. a transmission housing;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in FIG. 1, the fixture for finish machining of the gearbox shell comprises a base 1, a transition plate 2, a connecting plate 3, a first pressing component 4 and an outer circle holding component 5, wherein the first pressing component 4 and the outer circle holding component 5 are connected to the top surface of the base 1; the top surface of crossing cab apron 2 is connected with the window face of gearbox casing 9, the bottom surface of crossing cab apron 2 with the top surface of connecting plate 3 is connected, the bottom surface of connecting plate 3 with base 1 is connected, and is a plurality of the top of first pressure components 4 compress tightly in the top surface of crossing cab apron 2, the excircle is held tightly subassembly 5 and is pressed from both sides tightly on the excircle of gearbox casing 9.
The upper surface and the lower surface of the base 1 are precisely machined, the flatness and the parallelism of the base are guaranteed, the rigidity, the flatness and the parallelism of the whole base can be effectively guaranteed, the base 1 is in a step-shaped structure in order to adapt to the height difference of the gearbox shell 9, and the top surface of the base 1 is in a step-shaped structure.
As shown in fig. 2, the transition plate 2 includes a transition plate body 21, a first cylindrical positioning pin 22 and a first rhombic positioning pin 23, and as shown in fig. 3, the transition plate body 21 has two first positioning pin holes 24, the first cylindrical positioning pin 22 and the first rhombic positioning pin 23 are located in the first positioning pin holes 24, eight first connection screw holes 25 connected to the window surface of the transmission case 9 are provided on both sides of the transition plate body 21, wherein four first connection screw holes 25 on the left side are circular counter holes, four first connection screw holes 25 on the right side are rectangular counter holes with openings on the side, and two first connection screw holes 25 are provided in the middle.
As shown in fig. 4, the window surface of the transmission housing 9 has two positioning pin holes processed in the previous process, a first cylindrical positioning pin 22 and a first diamond positioning pin 23 are connected with the window surface in a positioning manner, and the transition plate 2 is fixedly connected with the transmission housing 9 through ten bolts.
As shown in fig. 5, the connecting plate 3 includes a connecting plate body 31, a second cylindrical positioning pin 32, a second diamond positioning pin 33, a third positioning pin 34, a second connecting screw hole 35, and a groove 36, the connecting plate body 31 has a rectangular hole and a circular hole, the rectangular hole and the circular hole are step-shaped, the second cylindrical positioning pin 32 is fixedly connected in the circular hole by a bolt, the second diamond positioning pin 33 is fixedly connected in the rectangular hole by a bolt, the connecting plate body 31 has a pin hole for connecting the third positioning pin 34, the third positioning pin 34 is used for positioning with the base 1, seven of the connecting plate body 31 have second connecting screw holes 35 connected with the base 1, and the second connecting screw holes 35 are symmetrically arranged with two sides and three centers; the groove 36 facilitates the taking up of the transition plate body 21 when the removal is performed.
As shown in fig. 6 and 7, after the transition plate body 21 is connected to the connecting plate body 31, the first cylindrical positioning pin 22 is located in the upper half of the first positioning pin hole 24, the second cylindrical positioning pin 32 is located in the lower half of the first positioning pin hole 24, and the transition plate body 21 and the connecting plate body 31 are positioned by the second cylindrical positioning pin 32 and the second diamond positioning pin 33.
In the embodiment, the transition plate body 21 and the connecting plate body 31 are both steel pieces, and are subjected to heat treatment to ensure difficult deformation, fine grinding processing and flatness and parallelism;
this embodiment, adopt first cylinder locating pin 22 and first rhombus locating pin 23 to realize the location through the window face through gearbox housing 9 earlier, rethread cab apron body 21 and connecting plate body 31 realize the location through second cylinder locating pin 32 and second rhombus locating pin 33, and adopt the bolt with three fixed connection, this embodiment can not have suitable pressure point to gearbox housing 9 finish machining, adopt cab apron 2 to connect, and compress tightly cab apron 2 through first pressure subassembly 4, the excircle of gearbox housing 9 is held tightly to the excircle hold tightly subassembly 5, stabilize the clamping, effectively press from both sides tightly and support, and through the precision that improves cab apron 2 and connecting plate 3, guarantee the plane degree of processing holding surface, make the finish machining hole size of gearbox housing 9, the precision is all guaranteed, and is stable and reliable, the uniformity is better.
Example two:
as shown in fig. 8, on the basis of the first embodiment, in this embodiment, the first pressing component 4 includes a first supporting rod 41, a first screw rod 42, a first pressing plate 43, and first locking nuts 44, the first supporting rod 41 and the first screw rod 42 are arranged at an interval, and are fixedly connected to the base 1 by bolts and the like, one end of the first pressing plate 43 is hinged to the top end of the first supporting rod 41, the other end of the first pressing plate 43 has a kidney-shaped hole, the top end of the first screw rod 42 passes through the kidney-shaped hole, the first locking nuts 44 are connected to the top end of the first screw rod 42 to press the first pressing plate 43 on the transition plate body 21, and the number of the first pressing components 4 is four and is symmetrically arranged along the central vertical symmetry plane of the transmission case shell 9.
In this embodiment, the fixture for finish machining of the gearbox housing further comprises a second pressing assembly 6, the second pressing assembly 6 has the same principle as the first pressing assembly 4, the heights of the second pressing assembly 6 are different, and the top end of the second pressing assembly 6 is pressed on the middle part of the gearbox housing 9;
the second pressing component 6 comprises a second supporting rod 61, a second screw rod 62, a second pressing plate 63 and a second locking nut 64, the second supporting rod 61 and the second screw rod 62 are arranged at intervals and fixedly connected to the base 1 through bolts and the like, one end of the second pressing plate 63 is hinged to the top end of the second supporting rod 61, the other end of the second pressing plate 63 is provided with a waist-shaped hole, the top end of the second screw rod 62 penetrates through the waist-shaped hole, and the second locking nut 64 is connected with the second screw rod 62 to press the second pressing plate 63 to the middle of the gearbox shell 9.
The first pressing component 4 and the second pressing component 6 are pressed by pressing plates, and the first pressing components 4 are symmetrically arranged and are stressed uniformly; the second pressing component 6 presses the middle waist part to play a role in auxiliary pressing.
Example three:
as shown in fig. 8, on the basis of the above embodiment, two outer circumferential clasping assemblies 5 are arranged symmetrically along the central vertical symmetry plane of the gearbox housing 9.
Referring to fig. 9, the outer circle clasping assembly 5 comprises a supporting block 51, a lifting screw 52, a lifting nut 53, an abutting plate 54 and a fastening bolt 55;
the supporting block 51 is of an inverted F-shaped structure, the bottom of the supporting block is connected with the base 1, reinforcing ribs are additionally arranged on the side face of the supporting block 51, a U-shaped notch is formed in the side face of the supporting block 51, an L-shaped notch is formed in the top end of the supporting block 51, the lifting nut 53 is located in the U-shaped notch of the supporting block 51, the lifting screw 52 vertically penetrates through the upper side of the U-shaped notch, the top end of the lifting screw 52 is located in the L-shaped notch and hinged to one end of the abutting plate 54, the bottom end of the lifting screw 52 is in threaded connection with the lifting nut 53, the middle of the abutting plate 54 is hinged to the top end of the supporting block 51. The side edge between the U-shaped groove and the L-shaped groove is provided with a horizontal threaded hole which is vertically intersected with a hole through which the lifting screw 52 vertically penetrates, and the fastening bolt 55 is connected with the horizontal threaded hole and abuts against the lifting screw 52.
As shown in fig. 10, the lifting nut 53 is a cylindrical structure with two end radii smaller than the middle radius, and has threads inside, two ends of the lifting nut 53 are clamped in the U-shaped groove, and a relatively small gap is formed between the two ends of the lifting nut 53 and the U-shaped groove, so that the lifting nut 53 can rotate, and the rotation of the lifting nut 53 can realize the up-and-down movement of the lifting screw 52;
the top end of the lifting screw 52 is a U-shaped socket, and one end of the abutting plate 54 is rotatably connected to the top end of the lifting screw 52 through a pin shaft; the abutting plate 54 is in a triangular structure and is connected with the lifting screw 52 and the top end of the supporting block 51 to form a lever structure, the lifting screw 52 rises to enable the abutting plate 54 to rotate around the connection part with the supporting block 51, the other end of the abutting plate 54 is forced to be in press-connection with the outer circle of the gearbox shell 9, and after the press-connection is in place, the fastening bolt 55 is used for screwing and fastening, so that the pressing force is guaranteed.
Example four:
as shown in fig. 1, 6, or 8, on the basis of the above embodiment, the fixture for finishing the transmission case further includes an auxiliary supporting column, and in this embodiment, because the heights of different positions of the transmission case 9 are different, two auxiliary supporting columns are adopted, namely a first auxiliary supporting column 7 and a second auxiliary supporting column 8; as shown in fig. 8, the first auxiliary support column 7 and the second auxiliary support column 8 are located on a vertical symmetry plane.
The first auxiliary supporting column 7 and the second auxiliary supporting column 8 have the same structure, and are different in the height of the supporting cylinder 71 and the height of the auxiliary supporting rod 72, the installation position of the locking bolt 74 is different, and the second auxiliary supporting column 8 is higher than the first auxiliary supporting column 7; the two principles are the same, and the first auxiliary supporting column 7 is taken as an example for explanation in the present embodiment.
As shown in fig. 11, the first auxiliary supporting column 7 includes a supporting cylinder 71, an auxiliary supporting rod 72, a spring 73, and a locking bolt 74, wherein a cavity is formed in the supporting cylinder 71, a top end of the supporting cylinder 71 is provided with a hole, the bottom of the supporting cylinder 71 is connected to the base 1, the spring 73 is arranged in the supporting cylinder 71, the auxiliary supporting rod 72 is a cylindrical rod with a middle radius larger than radii of two ends, a step at the bottom is provided to be capable of abutting against the spring 73, a top end of the auxiliary supporting rod 72 extends into the spring 73, a top end of the auxiliary supporting rod extends from the hole at the top end of the supporting cylinder 71, a radial threaded hole communicated with the inner cavity is formed in a side surface of the supporting cylinder 71, the locking bolt 74 is in threaded connection with the radial threaded hole, and a tail.
The auxiliary supporting column is internally provided with a spring 73 which plays a role of automatic lifting and can effectively contact with a workpiece supporting surface relative to the auxiliary supporting column which is manually adjusted; and the manual adjustment is not needed (the manual adjustment is carried out, the force is large, the workpiece is easy to tilt, the force is small, the workpiece cannot be effectively contacted, and the auxiliary supporting effect cannot be realized).
The clamping method of the clamp for finish machining of the gearbox shell in the embodiment comprises the following steps:
(1) as shown in fig. 4, before clamping, the transition plate 2 is firstly installed on the window surface of the transmission case, that is, the first cylindrical positioning pin 22 and the first diamond positioning pin 23 on the transition plate 2 are inserted into two positioning pin holes processed in the previous process of the window surface of the transmission case for positioning, and then are connected together through bolts to form an integral assembly;
(2) as shown in fig. 12 and 13, the integral assembly is hoisted to a fixture by a hook, the lower half parts of the two first positioning pin holes 24 are aligned with the second cylindrical positioning pin 32 and the second rhombic positioning pin 33 on the connecting plate 3 and are inserted and positioned, the auxiliary support rod 72 of the first auxiliary support column 7 is automatically pressed down by the lower waist blank surface in the middle of the gearbox, the second auxiliary support column 8 is automatically pressed down by the excircle of the gearbox disc, and the two auxiliary support columns are respectively locked by the side locking bolts 74 to play an auxiliary support role; the four groups of first pressing assemblies 4 are pressed onto the transition plate 2, one group of second pressing assemblies 6 are pressed at the upper waist position in the middle of the gearbox (the pressing force is small, a half circle of nuts are manually rotated after pre-tightening, the auxiliary pressing effect is achieved, the force is large, a machining hole is easy to deform), the lifting nuts 53 of the two groups of outer circle holding assemblies 5 are respectively rotated to hold the outer circle of the gearbox tightly, the outer circle of the gearbox is locked by the side fastening bolts 55, and the workpiece is clamped to the clamp;
(3) and after the gearbox finish machining clamp is assembled, fixing the clamp on a horizontal machining center workbench.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The fixture for finish machining of the gearbox shell is characterized by comprising a base, a transition plate, a connecting plate, a first pressing assembly and an outer circle holding assembly, wherein the first pressing assembly and the outer circle holding assembly are connected to the top surface of the base;
the top surface of crossing the cab apron is connected with the window face of gearbox casing, the bottom surface of crossing the cab apron with the top surface of connecting plate is connected, the bottom surface of connecting plate with the base is connected, and is a plurality of the top of first compress tightly the subassembly compress tightly in the top surface of crossing the cab apron, the excircle is held tightly the subassembly and is pressed from both sides tightly on the excircle of gearbox casing.
2. The fixture for fine machining of the gearbox shell as claimed in claim 1, wherein the transition plate comprises a transition plate body, a first cylindrical positioning pin and a first diamond-shaped positioning pin, the first cylindrical positioning pin and the first diamond-shaped positioning pin are connected with the window face of the gearbox shell, the transition plate body is provided with a plurality of first positioning pin holes, the first cylindrical positioning pin and the first diamond-shaped positioning pin are located in the first positioning pin holes, and the transition plate body is provided with a plurality of first connecting screw holes connected with the window face of the gearbox shell.
3. The clamp for fine machining of the gearbox shell according to claim 2, wherein the connecting plate comprises a connecting plate body, a second cylindrical positioning pin and a second diamond-shaped positioning pin which are connected with the first positioning pin hole of the transition plate body, and a third positioning pin which is connected with the base, the connecting plate body is provided with a rectangular hole and a circular hole, the second cylindrical positioning pin is connected in the circular hole, the second diamond-shaped positioning pin is connected in the rectangular hole, the connecting plate body is provided with a pin hole used for connecting the third positioning pin, and the connecting plate body is provided with a plurality of second connecting screw holes which are connected with the base.
4. The clamp for fine machining of the gearbox shell as claimed in claim 1, wherein the first pressing component comprises a first supporting rod, a first screw rod, a first pressing plate and a first locking nut, the first supporting rod and the first screw rod are connected to the base at intervals, one end of the first pressing plate is hinged to the top end of the first supporting rod, the other end of the first pressing plate is provided with a kidney-shaped hole, the top end of the first screw rod penetrates through the kidney-shaped hole, and the first locking nut is connected with the first screw rod and presses the first pressing plate onto the transition plate.
5. The clamp for fine machining of the gearbox shell according to claim 1, further comprising a second pressing component, wherein the top end of the second pressing component is pressed to the middle of the gearbox shell, the second pressing component comprises a second supporting rod, a second screw rod, a second pressing plate and a second locking nut, the second supporting rod and the second screw rod are connected to the base at intervals, one end of the second pressing plate is hinged to the top end of the second supporting rod, the other end of the second pressing plate is provided with a kidney-shaped hole, the top end of the second screw rod penetrates through the kidney-shaped hole, and the second locking nut is connected with the second screw rod and presses the second pressing plate to the middle of the gearbox shell.
6. The fixture for finish machining of transmission housings according to claim 1, wherein the number of the first pressing assemblies is four, and the number of the outer circumferential clasping assemblies is two, and the two outer circumferential clasping assemblies are symmetrically arranged along a central vertical symmetry plane of the transmission housing.
7. The fixture for finely machining the gearbox shell according to claim 1, wherein the outer circle clasping component comprises a supporting block, a lifting screw, a lifting nut and a butting plate, the bottom of the supporting block is connected with the base, the side face of the supporting block is provided with a U-shaped notch, the top end of the supporting block is provided with an L-shaped notch, the lifting nut is located in the U-shaped notch of the supporting block, the lifting screw vertically penetrates through the side edge of the U-shaped notch, the top end of the lifting screw is located in the L-shaped notch and hinged to one end of the butting plate, the bottom end of the lifting screw is in threaded connection with the lifting nut, the middle of the butting plate is hinged to the top end of the supporting block, and the other end of the butting plate is abutted to the outer circle.
8. The clamp for finishing the gearbox shell according to claim 7, further comprising a fastening bolt, wherein a horizontal threaded hole is formed in the side edge of the position between the U-shaped groove and the L-shaped groove, the horizontal threaded hole is perpendicular to a hole through which the lifting screw vertically penetrates, and the fastening bolt is connected with the horizontal threaded hole and abuts against the lifting screw.
9. The fixture for fine machining of the gearbox shell as claimed in claim 1, further comprising an auxiliary support column, wherein the auxiliary support column comprises a support cylinder, an auxiliary support rod, a spring and a locking bolt, a cavity is formed in the support cylinder, a top end of the support cylinder is provided with an opening, the bottom of the support cylinder is connected to the base, the spring is arranged in the support cylinder, the auxiliary support rod is a cylindrical rod with a radius of the middle larger than the radius of two ends, the top end of the auxiliary support rod extends into the spring, the top end of the auxiliary support rod extends out of the opening in the top end of the support cylinder, and the locking bolt is connected with a radial threaded hole of the support cylinder and abuts against the middle of the auxiliary support.
10. The clamping method of the clamp for the finish machining of the gearbox shell as claimed in any one of claims 1 to 9 is characterized in that before clamping, the window surface of the gearbox shell is connected with the transition plate, then the transition plate is hoisted to the position above the connecting plate and is connected with the connecting plate, the transition plate is pressed by the first pressing assemblies, and the excircle enclasping assembly is clamped on the excircle of the gearbox shell.
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| CN202110310575.3A CN113021033B (en) | 2021-03-23 | 2021-03-23 | Clamp for finish machining of gearbox shell and clamping method |
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| CN202110310575.3A CN113021033B (en) | 2021-03-23 | 2021-03-23 | Clamp for finish machining of gearbox shell and clamping method |
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| CN114102395A (en) * | 2021-11-30 | 2022-03-01 | 海南电网有限责任公司三亚供电局 | Transformer substation's plane fastener grinding device |
| CN115156952A (en) * | 2022-08-08 | 2022-10-11 | 马鞍山鑫诺新金属材料有限公司 | Gearbox box processing positioning fixture |
| CN116060970A (en) * | 2023-02-22 | 2023-05-05 | 一汽解放汽车有限公司 | Clamp for machining speed reducer shell |
| CN116493986A (en) * | 2023-06-30 | 2023-07-28 | 欧玛(中国)汽车部件有限公司 | New energy unmanned passenger train gearbox shell fixture tool |
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Application publication date: 20210625 Assignee: ANHUI QUANCHAI JINTIAN MACHINERY Co.,Ltd. Assignor: ANHUI QUANCHAI ENGINE Co.,Ltd. Contract record no.: X2023980052339 Denomination of invention: Fixture and clamping method for precision machining of gearbox housing Granted publication date: 20220819 License type: Common License Record date: 20231220 |
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