CN220717987U - Gear fixture with few teeth and self-centering face - Google Patents
Gear fixture with few teeth and self-centering face Download PDFInfo
- Publication number
- CN220717987U CN220717987U CN202321084624.7U CN202321084624U CN220717987U CN 220717987 U CN220717987 U CN 220717987U CN 202321084624 U CN202321084624 U CN 202321084624U CN 220717987 U CN220717987 U CN 220717987U
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- pressing plate
- teeth
- pull rod
- outer circle
- face
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- 238000003825 pressing Methods 0.000 claims abstract description 47
- 208000010727 head pressing Diseases 0.000 claims description 11
- 238000003754 machining Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036339 tooth positioning Effects 0.000 description 1
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Abstract
The utility model discloses a fixture for a self-centering face gear car with a small number of teeth, consists of a pull rod, a positioning base, a three-jaw pressing plate, a hexagonal nut, a hexagon socket head cap screw, a processed product, a ball pressing plate and the like. The diameter of the pull rod is sequentially reduced from the left end to the right end, the inner hole of the pull rod is fixedly connected with the inner threaded hole through 3 inner hexagonal cylindrical head screws, the pull rod, the positioning base and the inner hexagonal cylindrical head screws are connected into a whole, and the pull rod, the positioning base and the inner hexagonal cylindrical head screws are fixed on a clamping jaw of a machine tool before machining. The face gear part of the product to be processed is contacted with the face gear surface, the three-jaw pressing plate is sleeved from the small outer circle, the three-jaw pressing plate limiting teeth are contacted with the inner spline of the product to be processed, the pressing plate teeth are contacted with the bottom of the inner spline of the product to be processed, the product to be processed is fixed with the pressing plate through the pressing plate teeth and the limiting teeth, the ball pressing plate and the hexagonal bolt are sleeved into the pull rod in sequence, and the hexagonal bolt is matched with the external thread of the small outer circle to fix the product to be processed, the three-jaw pressing plate and the ball pressing plate.
Description
Technical Field
The utility model relates to the technical field of machining clamps, in particular to a self-centering face gear clamp with a small number of teeth.
Background
The clamps for vehicles are very common in the field of machining, the use of a vehicle clamp for complex parts is also quite normal. Face gear transmission is also increasingly applied in various fields, wherein cylindrical gears are processed by hobbing, face teeth are manufactured by cold extrusion and machining, but the machining needs tooth positioning, a special fixture for a vehicle is designed, and the design and the machining of the fixture for the vehicle are very difficult, so the face gear processing is always a difficult problem in the field of machining.
In order to ensure smooth machining, a special fixture is designed and manufactured to ensure the coaxiality (including radial runout, step surface runout and the like) of the subsequent machining part and the tooth-shaped part of the face tooth. However, in actual operation, the manufacturing difficulty of the clamp is high, and if a cold extruded blank is directly changed into the clamp, the rotation center of the face teeth cannot be accurately found out; if the machining fixture is used, the tooth-shaped part of the face tooth cannot be machined due to the lack of special machining equipment for the face tooth. Even if the two clamps can be normally manufactured, the two clamps are in point contact when in use, the cold extruded blank has low hardness, and the tooth shape of the face teeth is easy to damage.
Disclosure of Invention
The utility model aims to solve the problems that the rotation center of the face teeth is difficult to confirm and the tooth shape of the face teeth is easy to damage in the prior art, and provides a self-centering face gear clamp with a small number of teeth.
The aim of the utility model can be achieved by the following technical scheme:
the small-tooth-number self-centering face gear clamp comprises a pull rod and is characterized in that a large outer circle is arranged on one side of the pull rod, a small outer circle is arranged on one side, away from the large outer circle, of the pull rod, a positioning base is sleeved on the surface of the pull rod, and the pull rod is fixedly connected with the positioning base;
a plurality of end face teeth are arranged on one side of the positioning base far away from the large outer circle, a processed product is sleeved on the surface of the pull rod, face teeth are arranged on one surface of the processed product close to the positioning base, and the face teeth of the processed product are in meshed connection with the end face teeth;
the surface of the small outer circle is sleeved with a three-jaw pressing plate, and the three-jaw pressing plate, a processed product and the positioning base are fixedly connected.
As a further scheme of the utility model: one side of the connecting seat, which is close to the big outer circle, is fixedly clamped on the machine tool.
As a further scheme of the utility model: the number of the face teeth of the processed product is an integral multiple of the number of the end face teeth, and the end face teeth are distributed in a circumferential array at equal intervals.
As a further scheme of the utility model: the circle runout between the connecting seat and the small outer circle is within 0.01.
As a further scheme of the utility model: the surface of the small excircle is sleeved with a ball head pressing plate, the ball head pressing plate is in tight contact with the three-jaw pressing plate, the outer thread surface is provided with a hexagonal nut, and the hexagonal nut is in tight contact with the ball head pressing plate.
As a further scheme of the utility model: three limit teeth and three pressing plate teeth are arranged around the three-jaw pressing plate, and the limit teeth and the pressing plate teeth are arranged in a circumferential symmetry mode relative to the axis of the three-jaw pressing plate.
As a further scheme of the utility model: the inside of big excircle is provided with the pull rod hole, and the one side of connecting seat that is close to big excircle is provided with the screw hole, threaded connection has interior hexagonal cylinder head screw between screw hole and the pull rod hole.
The utility model has the beneficial effects that:
(1) According to the small-tooth-number self-centering face gear clamp, the positioning base is arranged, the face gear is arranged at one end of the positioning base and sleeved at the rotation center, a small outer circle surface is sleeved on a processed product, and the face gear of the processed product is in meshed connection with the face gear, so that the rotation center of the face gear is determined;
(2) According to the self-centering face gear clamp with few teeth, the plurality of face gears are arranged, one tooth is reserved at intervals according to the requirement, and design processing of topping and rooting is carried out at the same time, so that the number of face teeth of a processed product is an integral multiple of the number of face teeth, each tooth face is uniformly stressed in the processing process, and tooth face damage is reduced.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of a small number of teeth self-centering face gear vehicle clamp of the present utility model;
FIG. 2 is a schematic view of the structure of the tie rod of the present utility model;
FIG. 3 is a schematic view of the positioning base of the present utility model;
fig. 4 is a schematic structural view of the three-jaw platen of the present utility model.
In the figure: 1. a pull rod; 11. a pull rod inner hole; 12. a large outer circle; 13. an external thread; 14. a small outer circle; 2. positioning a base; 21. an internal thread; 22. a connecting seat; 23. end face teeth; 3. a three-jaw press plate; 31. limit teeth; 32. pressing plate teeth; 4. a hexagonal nut; 5. a hexagon socket head cap screw; 6. processing a product; 7. and (5) a ball head pressing plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the utility model discloses a self-centering face gear clamp with few teeth, which comprises a pull rod 1, wherein one side of the pull rod 1 is provided with a large outer circle 12, and one side of the pull rod large outer circle 12 far away from the pull rod 1 is provided with a pull rod inner hole 11; the other side of the pull rod 1 provided with the large outer circle 12 is provided with a small outer circle 14, and the outer surface of the small outer circle 14 is provided with an external thread 13; the pull rod 1 is divided into three sections of step surfaces, the radius of the large outer circle 12 is larger than that of the pull rod 1, the radius of the pull rod 1 is larger than that of the small outer circle 14, the three sections of step surfaces of the pull rod 1 are arranged, so that the subsequent assembly and connection of the processed product 6 are facilitated.
Referring to fig. 1-4, a positioning base 2 is assembled and connected to one side of the large outer circle 12, which is close to the pull rod 1, and the positioning base 2 is in close contact with the large outer circle 12; an internal thread 21 is arranged on one side of the positioning base 2 close to the large outer circle 12, the shape and the position of the internal thread 21 are matched with those of the pull rod inner hole 11, the inner threads of the pull rod inner hole 11 and the internal thread 21 are connected with an internal hexagonal cylindrical head screw 5, and the internal hexagonal cylindrical head screw 5 enables the pull rod 1 to be fixed with the positioning base 2; the side of the positioning base 2 far away from the internal thread 21 is provided with base end face teeth 23, and the base end face teeth 23; the surface of the positioning base 2 is provided with a connecting seat 22, and one side of the connecting seat 22, which is close to the large outer circle 12, is fixedly connected with a claw of a numerical control machine tool; the tooth surface of the processed product 6 is attached to the end face tooth surface 23; the surface of the small outer circle 14 is sleeved with a three-jaw pressing plate 3, one side of the three-jaw pressing plate 3, which is close to the processed product 6, is provided with three limiting teeth 31, the three-jaw pressing plate 3 is meshed with a spline of the processed product 6 through the limiting teeth 31, the circumferential side surface of the three-jaw pressing plate 3 is provided with three pressing plate teeth 32, the pressing plate teeth 32 are in contact with the surface of the processed product 6, and the limiting teeth 31 are fixedly connected with the pressing plate teeth 32; the surface of the pull rod 1 is sleeved with a pressing plate, the pressing plate is tightly contacted with the three-jaw pressing plate 3, the pressing plate arranged on the small outer circle 14 is tightly contacted with the three-jaw pressing plate 3, three pressing plate teeth 32 are arranged on the circumferential side surface of the three-jaw pressing plate 3, the pressing plate teeth 32 are contacted with the surface of the processed product 6, and the limiting teeth 31 are fixedly connected with the pressing plate teeth 32 for the processed product 6; the surface of the small outer circle 14 is sleeved with a pressing plate, the pressing plate is tightly contacted with the triangular pressing plate, the hexagonal nut 4 is connected with the external thread 13 on the surface of the small outer circle 14 in a threaded manner, the hexagonal nut 4 is tightly contacted with the pressing plate, and the processed product 6, the three-jaw pressing plate 3 and the pressing plate are fixed on a machine tool.
Wherein, the circle runout between the connecting seat 22 and the small outer circle 14 is within 0.01; the shape and the number of the end face teeth 23 are adapted to those of the face gears of the processed product 6, so that a worker can accurately find out the rotation center of the positioning end face teeth 23, and the end face teeth 23 are contacted with tooth grooves of the face teeth, and at the moment, the end face teeth 23 are contacted with the tooth sides of the face teeth in a face contact manner, so that the damage to the tooth surfaces of the face gears can be greatly reduced; the designed end face teeth 23 are not machined, and in order to ensure that the machining center can engrave the tooth shape with high precision, the end face teeth 23 are subjected to top cutting and root removing, which involves machining, so that a plurality of base end face teeth 23 are arranged in a circumferentially symmetrical manner, the number of the teeth of the face teeth of a product 6 to be machined is an integral multiple of the number of the end face teeth 23, each tooth face is uniformly stressed in the machining process, and tooth face damage is reduced; the three limit teeth 31 and the three press plate teeth 32 are symmetrically arranged circumferentially about the axis of the three-jaw press plate 3, so that the limit teeth 31 and the press plate teeth 32 are equally distributed on the circumference, and the processed product 6 is uniformly extruded and fixed.
When the small-tooth-number self-centering face gear clamp is used, a machined product 6 is sleeved on the surface of a small outer circle 14 of a pull rod 1, the machined product 6 is in meshed connection with a positioning base 2, a three-jaw pressing plate 3 is sleeved on the small outer circle 14, the three-jaw pressing plate 3 is in meshed connection with one face of the machined product 6, a ball-head pressing plate 7 is sleeved on the surface of the small outer circle 14, the ball-head pressing plate 7 is tightly contacted with the three-jaw pressing plate 3 and is fixed, a hexagonal nut 4 is connected with the surface of the small outer circle 14 through an external thread 13 in a threaded manner, the hexagonal nut 4 is tightly contacted with the ball-head pressing plate 7, the machined product 6, the three-jaw pressing plate 3 and the ball-head pressing plate 7 are fixed on a machine tool, a main shaft of the machine tool is rotated after clamping is completed, the machine tool clamp and the machined product 6 are driven to rotate, and the tool feeding of the machine tool is controlled, and the cutting machining of the product is realized. After lathe turning is accomplished, outwards rotatory hexagon nut 4, after hexagon nut 4 unscrews, take off bulb clamp plate 7 in proper order, three-jaw clamp plate 3, wait to process product 6, pull rod 1, positioning base 2, interior hexagonal cylinder head screw 5 are fixed still fixed in the lathe jack catch, measure its size after taking off to process product 6, ensure that process product 6 size all is within the drawing requirement scope, process next product according to preceding step after measuring qualified, if unqualified, adjust lathe parameter, until to process product 6 is qualified.
The working principle of the utility model is as follows: according to the self-centering face gear clamp with few teeth, the positioning base 2 is arranged, the face gear 23 is arranged at one end of the positioning base 2, the face gear 23 is sleeved at the rotation center, the machined product 6 is sleeved on the surface of the small outer circle 14, and the face gear of the machined product 6 is in meshed connection with the face gear 23, so that the rotation center of the face gear is determined; through setting up a plurality of face gears 23, keep a tooth according to needs with several teeth, cut the top simultaneously, remove root design processing, make the face tooth number of processing product 6 be the integer multiple of face tooth 23 number, guarantee that every flank of tooth atress of course of working is even, the reduction flank of tooth damage.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (7)
1. The small tooth number self-centering face gear clamp comprises a pull rod (1), and is characterized in that one side of the pull rod (1) is provided with a large outer circle (12), a small outer circle (14) is arranged on one side, far away from the large outer circle (12), of the pull rod (1), a positioning base (2) is sleeved on the surface of the pull rod (1), and the pull rod (1) is fixedly connected with the positioning base (2);
a plurality of end face teeth (23) are arranged on one side of the positioning base (2) far away from the large outer circle (12), a processed product (6) is sleeved on the surface of the pull rod (1), face teeth are arranged on one face of the processed product (6) close to the positioning base (2), and the face teeth of the processed product (6) are in meshed connection with the end face teeth (23);
the surface of the small outer circle (14) is sleeved with a three-jaw pressing plate (3), and the three-jaw pressing plate (3), a processed product (6) and the positioning base (2) are fixedly connected.
2. The low-tooth number self-centering face gear clamp according to claim 1, wherein the side of the connecting seat (22) close to the large outer circle (12) is fixedly clamped on a machine tool.
3. The low-tooth number self-centering face gear clamp according to claim 1, characterized in that the number of face teeth of the machined product (6) is an integer multiple of the face teeth (23), the face teeth (23) being arranged equidistantly in a circumferential array.
4. The low-tooth number self-centering face gear clamp as claimed in claim 1, characterized in that the runout between the connection seat (22) and the small outer circle (14) is within 0.01.
5. The small-tooth-number self-centering face gear clamp according to claim 1, wherein three limiting teeth (31) and three clamp plate teeth (32) are arranged around the three-jaw clamp plate (3), and the limiting teeth (31) and the clamp plate teeth (32) are symmetrically arranged circumferentially around the axis of the three-jaw clamp plate (3).
6. The small-tooth-number self-centering face gear clamp according to claim 1, wherein a ball head pressing plate (7) is sleeved on the surface of the small outer circle (14), the ball head pressing plate (7) is in tight contact with the three-jaw pressing plate (3), a hexagonal nut (4) is arranged on the surface of the external thread (13), and the hexagonal nut (4) is in tight contact with the ball head pressing plate (7).
7. The small-tooth-number self-centering face gear clamp according to claim 1, wherein a pull rod inner hole (11) is formed in the large outer circle (12), a threaded hole is formed in one side, close to the large outer circle (12), of the connecting seat (22), and an inner hexagonal cylindrical head screw (5) is connected between the threaded hole and the pull rod inner hole (11) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321084624.7U CN220717987U (en) | 2023-05-08 | 2023-05-08 | Gear fixture with few teeth and self-centering face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321084624.7U CN220717987U (en) | 2023-05-08 | 2023-05-08 | Gear fixture with few teeth and self-centering face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220717987U true CN220717987U (en) | 2024-04-05 |
Family
ID=90486926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321084624.7U Active CN220717987U (en) | 2023-05-08 | 2023-05-08 | Gear fixture with few teeth and self-centering face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220717987U (en) |
-
2023
- 2023-05-08 CN CN202321084624.7U patent/CN220717987U/en active Active
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| GR01 | Patent grant |