CN216542043U - Automobile transmission box part machining clamp - Google Patents
Automobile transmission box part machining clamp Download PDFInfo
- Publication number
- CN216542043U CN216542043U CN202123172570.3U CN202123172570U CN216542043U CN 216542043 U CN216542043 U CN 216542043U CN 202123172570 U CN202123172570 U CN 202123172570U CN 216542043 U CN216542043 U CN 216542043U
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- Prior art keywords
- positioning
- auxiliary
- transmission box
- tray
- box part
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 238000003754 machining Methods 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses an automobile transmission box part machining clamp which comprises a tray, wherein a main positioning clamping sleeve group and a plurality of auxiliary positioning clamping sleeve groups are arranged on the tray. The fixture can be used for producing all parts in the same category and within a certain size range, has high universality and reduces the cost; the positioning mode takes the large shape error of the blank surface into consideration, and the fine adjustment floating supporting nail compensates the error. The main compression nut on the stand is considered to be hard to close in a clamping mode, the opening gasket is specially arranged to reduce the number of turns of the nut in the closing mode, so that an operator saves more labor, and meanwhile the main nut and the auxiliary nut respectively compress the top and the bottom of the part to ensure that the part cannot slide relatively easily in the machining process. The reliability of the clamp in the machining process is further enhanced.
Description
Technical Field
The utility model belongs to the field of machine tool clamps, and particularly relates to a machining clamp for an automobile transmission box part.
Background
The gear transmission housing is one of the important elements of an automotive transmission assembly and directly determines the positional relationship of the drive shaft and the gear set within the housing. At present, the automatic assembly of automobiles in China is gradually popularized and applied. However, if the clutch housing has production defects such as dimensional tolerance, cracks and the like, assembly faults of an automobile automatic assembly line can be caused, and huge economic losses are brought by suspension of the line. Therefore, in recent years, the dimensional tolerance grade, the surface quality and the like of the transmission case have been more required to ensure the normal operation of the automatic assembly line. This presents technical difficulties for automobile parts suppliers, and more reliable processes and higher manufacturing precision systems are needed in the production field to meet new standards and new requirements. Therefore, the machining fixture which is reliable and economical is designed, and the machining qualification rate of the transmission shell is improved.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a clamping device for automobile transmission shell parts, which is reliable, low in cost and simple in structure. The device can accurately control the relative position of the transmission shell blank in the machine tool, reduce the machining size out-of-tolerance and effectively avoid the phenomena of relative sliding, deformation and the like of parts in the machining process.
In order to achieve the purpose, the utility model provides the following technical scheme:
a machining clamp for automobile transmission box type parts comprises a tray, wherein a main positioning clamping sleeve group and a plurality of auxiliary positioning clamping sleeve groups are arranged on the tray;
the main positioning and clamping sleeve set comprises an upright post, the upper end of the upright post is a threaded post, and a positioning ring, an opening gasket and a main compression nut are sequentially sleeved on the threaded post from bottom to top;
the auxiliary positioning clamping sleeve set comprises an auxiliary clamp body, the auxiliary clamp body is fixedly connected with a flat pressing plate through a stud, an auxiliary pressing nut connected to the stud is arranged above the flat pressing plate, and an auxiliary positioning nail is horizontally arranged in the auxiliary clamp body.
The stand is a long stepped shaft, the bore of an inner hole of the positioning ring is matched with the shaft neck of the stand, and the outer circular surface of the positioning ring is matched with the positioning hole of the transmission box part.
The distance from the large end face of the long stepped shaft to the shaft shoulder is 430 mm; the inner orifice diameter of the positioning ring is 60 mm.
The opening gasket is a U-shaped gasket.
The auxiliary positioning nail is screwed on the inner threaded hole on the auxiliary clamp body, and the auxiliary positioning nail is in contact with the auxiliary positioning surface of the workpiece for auxiliary positioning.
The tray is provided with a positioning hole for fixedly connecting the main positioning clamping sleeve and a threaded hole for fixedly connecting the auxiliary positioning clamping sleeve; the tray is also provided with a floating supporting nail for supporting the parts.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a processing clamp for automobile transmission box type parts, which limits 2 translational degrees of freedom of parts by inserting an upright post connected with a tray into a central hole on the upper end surface of a transmission case; 3 floating support nails are arranged on the bottom surface of the shell so as to limit 1 translational degree of freedom; the front side of the part is provided with a long L plate with double supporting nails, and the side surface of the part is provided with a short L plate with single supporting nails, so that 3 rotation freedom are limited. The positioning mode during part processing accords with the six-point positioning principle, wherein the floating support nail effectively solves the difficult problem that the blank surface is uneven and inaccurate in positioning. The auxiliary supporting top increases the rigidity of the process system during part processing to a certain extent, and the phenomenon of over-positioning is avoided. Meanwhile, the opening gasket increases the stress area when the part is clamped, has a certain thickness, shortens the number of the rotation turns of the hexagon nut, and greatly reduces the workload of an operator.
Drawings
FIG. 1 is an assembly view of the clamp for machining the parts such as the automobile transmission box body;
FIG. 2 is an exploded view of the fixture for machining the parts such as the transmission case of the automobile;
FIG. 3 is an exploded view of a primary locating and clamping sleeve of an automotive transmission case type part according to the present invention;
FIG. 4 is an exploded view of the auxiliary positioning and clamping sleeve of the transmission case type component of the present invention.
In the figure: 1 is a main positioning and clamping sleeve set; 2 is a gearbox shell part; 3, an auxiliary positioning and clamping sleeve set; 4 is a tray; 5 is an L-shaped baffle; 6 is a stop block; 7 is a floating supporting nail; 8 is a main compression nut; 9 is an opening gasket; 10 is a positioning ring; 11 is a vertical column; 12 is an auxiliary compression nut; 13 is a flat pressing plate; 14 is a stud; 15 is an auxiliary clamp body; 16 adjusting the stud; 17 assist in locating the nail.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
As shown in fig. 1-4, the utility model provides a fixture for machining a box part of an automobile transmission, which comprises a tray 4, wherein a main positioning clamping set 1 and a plurality of auxiliary positioning clamping sets 3 are arranged on the tray;
a spherical floating support nail 7 is arranged on the tray 4 to support the gearbox shell part 2; the floating support nails 7 are 3 groups in total, contact the blank surface of the gearbox shell part 2, the unprocessed blank surface can not be directly placed on the tray, and the floating support nails can finely adjust the spatial position of the blank surface, so that the correct relative position of the part 2 on the tray 4 is ensured. The floating support nail is used for positioning the part and simultaneously bearing the weight of the part and bearing pressing force.
The tray 4 is further provided with an L-shaped baffle 5 and a stop block 6 which are standard parts of a machine tool combined fixture, one end of the L-shaped baffle is fixed on the tray, the stop block used for positioning is installed at the other end of the L-shaped baffle and is respectively attached to the front side and the left side of the gearbox shell part 2, so that the parts are not deviated in the machining process, and the machining reliability is guaranteed.
The main positioning and clamping set 1 consists of a main positioning component and a main clamping component, wherein the main positioning component comprises an upright post 11 and a positioning ring 10, and the main clamping component comprises an opening gasket 9, a main compression nut 8, a first positioning module and a first clamping module for parts; in addition, the floating support nail 7 on the tray 4, the L-shaped baffle 5 and the stop 6 form a second positioning module of a part forming a secondary positioning assembly.
The upright post 11 is a long stepped shaft, a positioning ring 10 is arranged on the journal of the upright post and matched with the central hole of the part to ensure that the positioning hole of the tray is aligned with the central hole of the upper end face of the part, and the distance between the large plane of the tray and the upper end face of the upright post is more than 500 mm. The distance from the large end surface of the shaft to the shaft shoulder is preferably 430mm, and the height can be finely adjusted by installing positioning rings 10 with different specifications. The diameter of an inner hole of the positioning ring is 60mm, the positioning ring is matched with a shaft neck of the stand column, and the outer circular surface of the positioning ring is matched with the positioning hole of the gearbox shell part 2, so that the positioning ring can be replaced according to the size numerical value of the positioning hole, and the universality of the clamp is ensured.
The split washer 9 is a clamping standard part commonly used in engineering, can increase the stress area of a part so as to improve the rigidity of the part in the machining process, and meanwhile, the split washer 9 has a certain thickness. The compression nut 8 reduces the number of turns when tightened, introducing operator workload.
The auxiliary positioning clamping set 3 comprises an auxiliary positioning module and a second clamping module, wherein the auxiliary positioning module and the second clamping module form parts by an auxiliary clamp body 15, a flat pressing plate 13, an auxiliary positioning nail 17, a stud 14 and an auxiliary pressing nut 12.
The auxiliary positioning clamping set 3 comprises an auxiliary clamp body 15, the auxiliary clamp body 15 is fixedly connected with a flat pressing plate 13 through a stud 14, an auxiliary compression nut 12 connected to the stud 14 is arranged above the flat pressing plate 13, and an auxiliary positioning nail 17 is horizontally arranged in the auxiliary clamp body 15.
The tray is further provided with a threaded hole, the threaded hole and the stud are connected with an auxiliary clamp body 15, and a flat pressing plate 13 and an auxiliary positioning nail 17 are installed on the clamp body 15.
Countersunk threaded holes are machined in the reverse side of the tray and used for connecting the clamp bodies through screws, and positioning holes are machined and used for determining the relative positions of the parts and the tray.
The auxiliary positioning and clamping sets 3 are preferably 2 and have the functions of pressing the workpiece on one hand and performing auxiliary positioning on the workpiece by using auxiliary positioning nails on the other hand.
In the first clamping module, the shaft neck of the upright post 11 is lathed with an external thread, and because the diameter of the external thread is large, the used main compression nut 8 has a larger specification, and can apply a larger axial load to the top of a part; a second clamping module, which uses a standard flat-end pressing plate 13, and is used for pressing the bottom of the part; the gearbox housing part 2 can be pressed by different pressing forces according to different processes during processing. Therefore, the clamping module ensures the applicability of additional processing.
The size of gearbox housing part 2 is on the large side, and the part deformation that very easily takes place during processing influences processingquality, need set up auxiliary positioning to it, is equipped with the screw hole in the auxiliary clamp body 15, thereby auxiliary positioning nail 17 accessible and the cooperation of screw hole and part contact reinforcing process system's rigidity in the course of working.
The utility model provides a processing clamp for automobile transmission box type parts, which is characterized in that a positioning pin connected with a tray is inserted into a central hole on the upper end surface of a transmission case body to limit 2 translational degrees of freedom of the parts; 3 floating support nails are arranged on the bottom surface of the shell so as to limit 1 translational degree of freedom; the front side of the part is provided with a long L plate with double supporting nails, and the side surface of the part is provided with a short L plate with single supporting nails, so that 2 rotational degrees of freedom and 1 rotational degree of freedom are respectively limited. The positioning element forms a main positioning component for the part; the pressing clamp body is provided with an adjustable supporting nail for assisting in positioning the part to form an auxiliary positioning assembly for the part. The positioning mode during part processing accords with the six-point positioning principle, wherein the floating support nail effectively solves the difficult problem of uneven positioning of the blank surface. The auxiliary supporting top increases the rigidity of the process system during part processing to a certain extent, and the phenomenon of over-positioning is avoided.
Furthermore, the shaft neck of the upright post 11 is turned with external threads, a part is clamped tightly through a compression nut and a U-shaped opening gasket is arranged between the compression nut and the part, the stress area of the part is increased when the part is clamped tightly through the opening gasket, and the thickness of the opening gasket is certain, so that the number of the rotation turns of the hexagon nut is shortened, and the workload of an operator is greatly reduced.
The utility model provides a specific assembling process of an automobile transmission box part machining clamp, wherein a transmission box part 2 penetrates through an upright post 11, and a bottom blank surface is placed on a floating support; adding a positioning ring 10 and an opening gasket 10, slightly shaking the part and adjusting a floating support nail to ensure that the positioning ring 10 is correctly matched with the central hole of the part, and pressing a main compression nut 8 on the opening gasket by using a spanner; an L-shaped baffle 5 and a stop block 6 are respectively arranged on the tray 4 to ensure that the positioning surface of the part is attached to the baffle; the auxiliary clamp body 15 is arranged on the tray 4, and the bottom of the part is clamped through the flat pressing plate 13, the auxiliary pressing nut 12 and the double-head stud. And finally, alternately screwing the main compression nut 8 and the auxiliary compression nut 12, and screwing the auxiliary positioning nail 17 on the internal thread hole on the auxiliary clamp body 15 to be contacted with the auxiliary positioning surface of the workpiece.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The automobile transmission box part machining clamp is characterized by comprising a tray (4), wherein a main positioning clamping sleeve set (1) and a plurality of auxiliary positioning clamping sleeve sets (3) are arranged on the tray;
the main positioning and clamping sleeve set comprises an upright post (11), the upper end of the upright post (11) is a threaded post, and a positioning ring (10), an opening gasket (9) and a main compression nut (8) are sleeved in sequence from bottom to top;
the auxiliary positioning clamping set (3) comprises an auxiliary clamp body (15), the auxiliary clamp body (15) is fixedly connected with a flat pressing plate (13) through a stud (14), an auxiliary pressing nut (12) connected to the stud (14) is arranged above the flat pressing plate (13), and an auxiliary positioning nail (17) is horizontally arranged in the auxiliary clamp body (15).
2. The automobile transmission box part machining clamp as claimed in claim 1, wherein the upright (11) is a long stepped shaft, an inner orifice diameter of the positioning ring (10) is matched with an upright shaft neck, and an outer circular surface of the positioning ring (10) is matched with a positioning hole of the transmission box part.
3. The automobile transmission box part machining clamp as claimed in claim 2, wherein the distance from the large end face of the long stepped shaft to the shaft shoulder is 430 mm; the inner orifice diameter of the positioning ring is 60 mm.
4. The automotive transmission box part machining clamp as claimed in claim 3, characterized in that the opening gasket (9) is a U-shaped gasket.
5. The automobile transmission box part machining clamp as claimed in claim 1, wherein the auxiliary positioning nail (17) is screwed on an internal threaded hole in the auxiliary clamp body (15), and the auxiliary positioning nail (17) is in contact with an auxiliary workpiece positioning surface for auxiliary positioning.
6. The automotive transmission box part machining clamp as claimed in claim 1, wherein the tray is provided with a positioning hole for fixedly connecting the main positioning clamping set (1) and a threaded hole for fixedly connecting the auxiliary positioning clamping set (3); the tray is also provided with a floating supporting nail (7) for supporting the part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123172570.3U CN216542043U (en) | 2021-12-17 | 2021-12-17 | Automobile transmission box part machining clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123172570.3U CN216542043U (en) | 2021-12-17 | 2021-12-17 | Automobile transmission box part machining clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216542043U true CN216542043U (en) | 2022-05-17 |
Family
ID=81543530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123172570.3U Expired - Fee Related CN216542043U (en) | 2021-12-17 | 2021-12-17 | Automobile transmission box part machining clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216542043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117020239A (en) * | 2023-10-10 | 2023-11-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Technological method for improving utilization rate of burrs of T-shaped plate part of aero-engine |
-
2021
- 2021-12-17 CN CN202123172570.3U patent/CN216542043U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117020239A (en) * | 2023-10-10 | 2023-11-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Technological method for improving utilization rate of burrs of T-shaped plate part of aero-engine |
| CN117020239B (en) * | 2023-10-10 | 2023-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Technological method for improving utilization rate of burrs of T-shaped plate part of aero-engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |