CN212653092U - Positioning mould for machining bell-shaped shell - Google Patents
Positioning mould for machining bell-shaped shell Download PDFInfo
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- CN212653092U CN212653092U CN202021151194.2U CN202021151194U CN212653092U CN 212653092 U CN212653092 U CN 212653092U CN 202021151194 U CN202021151194 U CN 202021151194U CN 212653092 U CN212653092 U CN 212653092U
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Abstract
A positioning mould for bell shell machining belongs to a special tool auxiliary tool for bell shell machining and is provided with a cylindrical frame, wherein the tail end of the cylindrical frame is fixedly connected with a flange seat, and the flange seat is provided with a plurality of mounting holes; six semicircular arc grooves are uniformly distributed on the outer circular surface of the head end of the cylindrical frame along the periphery, threaded holes are formed in the groove bottom of each arc groove, each threaded hole is communicated with the central hole of the cylindrical frame, a cylinder is arranged in each arc groove, the head end of each cylinder is a spherical surface, bolt holes are radially formed in each cylinder, bolts are arranged in each bolt hole, and a screw of each bolt is provided with a positioning section and a first threaded section, wherein the outer circular surface of the screw of the positioning section of each bolt is connected with the inner circular surface shaft hole of the corresponding bolt hole in a sliding and rotating mode, the first threaded section of each bolt is in threaded connection with the threaded hole in the corresponding arc groove, the fine forged piece of the bell-shaped shell can be positioned through the structure, and.
Description
Technical Field
The utility model provides a bell housing machine adds uses location mould.
Background
The existing bell housing positioning device comprises a positioning disc and a top of a machine tool, the positioning disc is provided with a shape corresponding to a chamfer of a bell housing upper shell opening, the shell opening of the bell housing is buckled with the positioning disc for positioning, the top of the machine tool is used for propping against a screw rod side of the bell housing, so that the bell housing is buckled on a clamping fixture for machining, and the bell housing positioning device has the advantages that in order to improve the production efficiency and the product quality of the bell housing, most of blank forgings of the existing bell housing are precision forgings, the chamfer of the shell opening is obtained through precision forging, the machining step of the part is saved, the positioning mode of the original clamping fixture is inaccurate, the rejection rate of machined parts is high, and therefore, a positioning clamping fixture designed for the bell housing precision forging is needed urgently and is used for meeting the production requirement.
Disclosure of Invention
The utility model aims at providing a bell shell machine adds uses location mould, can fix a position bell shell finish forge piece, and positioning accuracy is high.
The technical scheme of the utility model is that: bell shell machine adds uses location mould, its characterized in that: the flange is provided with a cylindrical frame, the tail end of the cylindrical frame is fixedly connected with a flange seat, and the flange seat is provided with a plurality of mounting holes; six semicircular arc grooves are uniformly distributed on the outer circular surface of the head end of the cylindrical frame along the periphery, threaded holes are formed in the groove bottom of each arc groove and communicated with the central hole of the cylindrical frame, a cylinder is arranged in each arc groove, the head end of each cylinder is a spherical surface, bolt holes are radially formed in each cylinder, bolts are arranged in each bolt hole, and a positioning section and a first threaded section are arranged on a screw rod of each bolt, wherein the outer circular surface of the screw rod of each positioning section of each bolt is connected with the inner circular surface shaft hole of the corresponding bolt hole in a sliding and rotating mode, and the first threaded section of each bolt is in threaded connection with the threaded hole in the corresponding arc groove.
The tail end of each arc groove is a blind end, and the tail end of each cylinder is contacted with the blind end of the corresponding arc groove.
The screw rod of each bolt is also provided with a second thread section, the screw rod of the second thread section is arranged in the central hole of the cylindrical frame, each second thread section positioned in the central hole is provided with a locking nut in threaded connection, the end surface of the locking nut is in compression joint with the inner wall of the central hole, the diameter of the screw rod of the second thread section is smaller than that of the screw rod of the first thread section, and the thread turning direction of the second thread section is opposite to that of the first thread section.
Each cylinder is provided with a convex key along the axial direction, each arc groove is provided with a key groove, and the key grooves are correspondingly matched with the convex keys.
The utility model discloses a use method and advantage are: the arc groove and the cylinder are in cambered surface contact fit and are closely positioned accurately, the spherical head ends of the six cylinders can be ensured to be uniformly distributed along the cylindrical frame, so that the spherical head ends of the six cylinders are matched with the six ball channels in the bell housing, the cylindrical frame is arranged on a machine shaft of a lathe through the mounting hole in the flange seat, the bell housing is buckled on the cylindrical frame, the six ball channels in the bell housing are in contact with the spherical head ends of the six cylinders, the tip of the machine tool is used for abutting against the screw rod end of the bell housing, the bell housing is automatically matched in place through the bonding between the six ball channels and the spherical head end surfaces of the six cylinders under the pressure of the tip, a precision forging piece of the bell housing can be positioned, and the positioning accuracy is high. The structure of components of a whole that can function independently design can be as required dismouting change not unidimensional cylinder to can fix a position the use to the six lane bell housings of not unidimensional, be particularly useful for MQB bell housing, MQB 2nd bell housing etc. and change the cylinder that the wearing and tearing are out of tolerance as required, can save material cost. The threaded hole is communicated with the central hole, so that air resistance does not exist when a screw rod of the bolt is screwed in, the bolt can be fastened in place, the biting force between the bolt and the threaded hole is increased, and the bolt and the threaded hole are prevented from being loosened due to vibration when a bell-shaped shell is added. The tail end of each cylinder contacts with the tail end of arc groove, transmits for the cylindrical frame at the casting die force that enables top, reduces the atress of each bolt, avoids the bolt to warp, can improve the precision and the durability of this application mould. The second screw thread section is through the nut derotation to the fastening in the centre bore, and it forms clamping force with first screw thread section, can avoid the bolt to open, can further improve the precision and the durability of this application mould. Each cylinder passes through the convex key and the arc groove mortise-tenon joint that corresponds, can fix a position spacingly to the cylinder, even if the bolt opens, under the effort of top casting die, through the cooperation of convex key and keyway, each cylinder still can fix a position accurately, ensures the machining precision, improves the yield.
Drawings
Fig. 1 is a schematic structural view of the positioning clamping fixture for the bell housing machine of the present invention.
Fig. 2 is another schematic structural view of the bell housing machine of the present invention with a positioning fixture.
Fig. 3 is a schematic view of the usage state of the positioning clamping fixture for the bell housing machine of the present invention.
Fig. 4 is a schematic structural view of the outer race.
In the figure, 1, 2, a flange seat, 3, a cylindrical frame, 4 cylinders, 5 spherical surfaces, 6 central holes, 7 threaded holes, 8 arc grooves, 9 bolt holes, 10 first threaded sections, 11 positioning sections, 12 bolts, 13 blind ends, 14 locking nuts, 15 second threaded sections, 16 key grooves, 17 convex keys, 18 bell shells, 19 apexes and 20 ball paths.
Detailed Description
A positioning mould is added to the bell housing machine, as shown in figures 1 and 3, the positioning mould is provided with a cylindrical frame 3, the tail end of the cylindrical frame is fixedly connected with a flange seat 2, and the flange seat is provided with a plurality of mounting holes 1; six semicircular arc grooves 8 are uniformly distributed on the outer circular surface of the head end of the cylindrical frame along the periphery, a threaded hole 7 is formed in the groove bottom of each arc groove, each threaded hole is communicated with a central hole 6 of the cylindrical frame, a cylinder 4 is arranged in each arc groove, the head end of each cylinder is a spherical surface 5, a bolt hole 9 is radially arranged on each cylinder, a bolt 12 is arranged in each bolt hole, a positioning section 11 and a first thread section 10 are arranged on a screw rod of each bolt, wherein the outer circular surface of the screw rod of each positioning section of each bolt is connected with the inner circular surface shaft hole of the corresponding bolt hole in a sliding and rotating mode, and the first thread section of each bolt is in threaded connection with the threaded hole on.
The tail end of each arc groove is a blind end 13, and the tail end of each cylinder is contacted with the blind end of the corresponding arc groove.
As shown in fig. 2, the screw of each bolt is further provided with a second thread section 15, the screw of the second thread section is arranged in the central hole of the cylindrical frame, each second thread section in the central hole is provided with a locking nut 14 in threaded connection, the end surface of the locking nut is in compression joint with the inner wall of the central hole, the diameter of the screw of the second thread section is smaller than that of the screw of the first thread section, and the thread turning direction of the second thread section is opposite to that of the first thread section.
Each cylinder is provided with a convex key 17 along the axial direction, each arc groove is provided with a key groove 16, and the key grooves are correspondingly matched with the convex keys.
As shown in fig. 3 and 4, the tail end refers to one end connected with the machine tool, and the working end at the other end is a head end; the positions and the number of the mounting holes arranged on the flange seat are determined according to the corresponding machine tool, the positioning mould is designed aiming at the outer shell 18 internally provided with six ball channels 20, the surfaces of the six ball channels in the outer shell are processed to have precision, and the positioning mould is required to be matched with a tip 19 on the machine tool for use.
The number of the convex keys on each cylinder is at least two, and correspondingly, the number of the key grooves on each arc groove is also two. The cylinder can be better positioned by the double-key-groove matched structure.
The inner wall of the central hole opposite to each locking nut is a plane wall, so as to improve the friction force of the locking nut and the central hole in compression joint and improve the locking effect of the locking nut, as shown in fig. 2, the central hole is a regular hexagonal hole, and each plane corresponds to one threaded hole in six planes on the regular hexagonal hole.
Claims (4)
1. Bell shell machine adds uses location mould, its characterized in that: the device is provided with a cylindrical frame (3), the tail end of the cylindrical frame is fixedly connected with a flange seat (2), and the flange seat is provided with a plurality of mounting holes (1); six semicircular arc grooves (8) are uniformly distributed on the outer circular surface of the head end of the cylindrical frame along the periphery, a threaded hole (7) is formed in the groove bottom of each arc groove, each threaded hole is communicated with a central hole (6) of the cylindrical frame, a cylinder (4) is arranged in each arc groove, the head end of each cylinder is a spherical surface (5), bolt holes (9) are radially formed in each cylinder, a bolt (12) is arranged in each bolt hole, a positioning section (11) and a first threaded section (10) are arranged on a screw rod of each bolt, the outer circular surface of the screw rod of the positioning section of each bolt is connected with an inner circular surface shaft hole of the corresponding bolt hole in a sliding and rotating mode, and the first threaded section of each bolt is in threaded connection with.
2. The bell housing machining positioning fixture of claim 1, wherein: the tail end of each arc groove is a blind end (13), and the tail end of each cylinder is contacted with the blind end of the corresponding arc groove.
3. The bell housing machining positioning fixture of claim 1, wherein: the screw rod of each bolt is also provided with a second thread section (15), the screw rod of the second thread section is arranged in the central hole of the cylindrical frame, each second thread section positioned in the central hole is provided with a locking nut (14) in threaded connection, the end surface of the locking nut is in compression joint with the inner wall of the central hole, the diameter of the screw rod of the second thread section is smaller than that of the screw rod of the first thread section, and the thread turning direction of the second thread section is opposite to that of the first thread section.
4. The bell housing machining positioning fixture of claim 1, wherein: each cylinder is provided with a convex key (17) along the axial direction, each arc groove is provided with a key groove (16), and the key grooves are correspondingly matched with the convex keys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021151194.2U CN212653092U (en) | 2020-06-19 | 2020-06-19 | Positioning mould for machining bell-shaped shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021151194.2U CN212653092U (en) | 2020-06-19 | 2020-06-19 | Positioning mould for machining bell-shaped shell |
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| Publication Number | Publication Date |
|---|---|
| CN212653092U true CN212653092U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021151194.2U Active CN212653092U (en) | 2020-06-19 | 2020-06-19 | Positioning mould for machining bell-shaped shell |
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| Country | Link |
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| CN (1) | CN212653092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751733A (en) * | 2021-09-27 | 2021-12-07 | 吉林北方捷凯传动轴有限公司 | Workpiece positioning and clamping device for bell-shaped shell turning machine tool |
| CN117086660A (en) * | 2023-10-18 | 2023-11-21 | 万向钱潮股份公司 | Clamping mechanism for positioning straight-line ball channel |
-
2020
- 2020-06-19 CN CN202021151194.2U patent/CN212653092U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751733A (en) * | 2021-09-27 | 2021-12-07 | 吉林北方捷凯传动轴有限公司 | Workpiece positioning and clamping device for bell-shaped shell turning machine tool |
| CN117086660A (en) * | 2023-10-18 | 2023-11-21 | 万向钱潮股份公司 | Clamping mechanism for positioning straight-line ball channel |
| CN117086660B (en) * | 2023-10-18 | 2023-12-29 | 万向钱潮股份公司 | Clamping mechanism for positioning straight-line ball channel |
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