CN213536509U - Clamping mechanism - Google Patents
Clamping mechanism Download PDFInfo
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- CN213536509U CN213536509U CN202022459976.9U CN202022459976U CN213536509U CN 213536509 U CN213536509 U CN 213536509U CN 202022459976 U CN202022459976 U CN 202022459976U CN 213536509 U CN213536509 U CN 213536509U
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- clamping
- tray
- clamping jaw
- chuck body
- pin
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Abstract
The utility model provides a clamping mechanism, including tray, work piece and (holding) chuck body, the work piece is placed on the tray, and the (holding) chuck body sets up in the top of tray, is provided with tight round pin of clamp on the tray, is provided with clamping jaw assembly on the (holding) chuck body, and clamping jaw assembly will press from both sides tight round pin clamp and press from both sides tightly, has seted up the mounting hole on the (holding) chuck body, is provided with the spring exerciser in the mounting hole, and the one end setting of spring exerciser is in the inside of mounting hole, and the other end butt of spring exerciser is on the tray. When the chuck body of the clamping mechanism is separated from the tray, the elastic device can apply downward pressure to the tray, so that the tray and the chuck body can be smoothly separated, and the tray and a workpiece can smoothly flow to a next station.
Description
Technical Field
The utility model relates to a frock clamp technical field, in particular to fixture.
Background
In the production process of the automobile gearbox, the gearbox assembly needs to be frequently grabbed, so that a special clamping mechanism is needed to clamp and grab the gearbox assembly, and a series of operations such as cleaning, drying, discharging and the like are performed on the gearbox assembly. The gearbox assembly is often placed on the tray, and then the clamping mechanism positions and locks the tray, so that the purpose of clamping the gearbox assembly is achieved.
In the existing clamping mechanism, a workpiece tray is usually designed by adopting 4-point standard positioning of a positioning pin, a diamond pin and a floating pin, but the matching installation errors of the workpiece tray and a robot chuck are considered, the positioning pin and a chuck clamping jaw are in close fit and locking with a long conical surface, and the actual matching tolerance gaps of the diamond pin, the floating pin and the chuck clamping jaw are very small; meanwhile, the gravity center of the part is unbalanced, the self weight of the aluminum shell is light, so that the stress of 4 stress points is unbalanced easily, large matching constraint force is generated on the binding surface of the positioning pin, and the workpiece is difficult to be safely separated from the clamping mechanism by 100% of the self weight. This can prevent the workpiece from successfully flowing into the subsequent station, which can affect the assembly process of the subsequent station. Meanwhile, if the workpiece is forcibly detached from the clamping mechanism in a manual mode, the hidden danger of damaging the workpiece exists.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a can make work piece tray break away from fixture smoothly with fixture.
In order to realize the above-mentioned purpose, the utility model provides a fixture includes tray, work piece and (holding) chuck body, and the work piece is placed on the tray, and the (holding) chuck body sets up in the top of tray, is provided with the tight round pin of clamp on the tray, is provided with clamping jaw assembly on the (holding) chuck body, and clamping jaw assembly will press from both sides tight round pin clamp, has seted up the mounting hole on the (holding) chuck body, is provided with the spring exerciser in the mounting hole, and the one end setting of spring exerciser is in the inside of mounting hole, and the other end butt of spring exerciser is on the.
In the scheme, when the workpiece tray and the chuck body need to be separated, the clamping jaw assemblies are loosened, the clamping jaw assemblies are separated from the clamping pins, the chuck body moves upwards, one end of the elastic device abuts against the tray at the moment, and downward pressure is applied to the workpiece tray. During the upward movement of the chuck body, because the four clamping pins are unevenly stressed, the clamping jaw assembly and the clamping pins may not be completely separated, so that during the upward movement of the chuck body, the tray may be moved upwards smoothly together, and the separation of the tray and the chuck body cannot be realized. The elastic device applies downward pressure to the tray, so that the tray can not be carried upwards by the chuck body, and the tray and the chuck body can be smoothly separated.
Preferably, one end of the spring device is provided with a mounting sleeve, the other end of the spring device is provided with a return spring, the mounting sleeve is arranged inside the mounting hole, and the return spring abuts against the tray.
In the above aspect, the return spring abuts on the tray. When the chuck body moves upwards and the tray is separated, the reset spring resets to apply downward elastic force to the tray, so that the tray cannot be lifted upwards by the chuck body.
The chuck body is rectangular, the number of the clamping jaw assemblies is four, and the four clamping jaw assemblies are respectively arranged at four corners of the chuck body.
The tray is rectangular, the number of the clamping pins is four, the four clamping pins are respectively arranged at four corners of the tray, and the four clamping pins and the four clamping jaw assemblies are arranged in a one-to-one correspondence mode.
The further scheme is that the mounting holes are distributed on two long edges of the chuck body, a plurality of mounting holes are formed in each long edge, and the number of the mounting holes in the two long edges is equal.
The spring force device is more than two, and the spring force devices are symmetrically arranged on two long edges of the chuck body.
In the above scheme, the two long edges of the chuck body are provided with the elastic devices, and the elastic device on each long edge can be one or more. Set up a plurality of elastic devices on the (holding) chuck body, can guarantee that the tray atress is more abundant, set up a plurality of elastic devices symmetry on two long edges of (holding) chuck body, can make the tray atress more even, can make tray and (holding) chuck break away from smoothly like this better.
In a further aspect, the clamping pin includes a first connecting section, a second connecting section, and a third connecting section connected in sequence, with a groove formed between the first connecting section and the third connecting section.
The clamping jaw assembly comprises a clamping jaw body, a piston and a reset spring are arranged inside the clamping jaw body, a clamping hole is formed in the center of the clamping jaw body, a clamping pin extends into the clamping hole, a channel for the clamping jaw to pass through is further formed in the clamping jaw body, and the tip of the clamping jaw extends into the groove.
Still further scheme is, still be provided with floating pin in the clamping jaw body inside, has seted up the cam groove on the clamping jaw, and floating pin stretches into the inside of cam groove, and the piston is used for promoting reset spring and floating pin upward and downward movement.
In above-mentioned scheme, when needs loosen the tray, the (holding) chuck drives clamping jaw subassembly upward movement, and the clamp pin stretches into the inside of pressing from both sides the hole, and the piston admits air, drives reset spring and the upward movement of unsteady round pin, and unsteady round pin promotes the clamping jaw through the cam groove and moves backward, and the pointed end of clamping jaw breaks away from inside the recess. The chuck body drives the clamping jaw assembly to be separated from the clamping pin upwards, and the separation of the chuck body and the tray is realized. When needs are pressed from both sides (holding) chuck and tray tightly, the (holding) chuck drives clamping jaw subassembly downstream, and the piston stops to admit air, and reset spring resets, promotes piston and the pin downstream that floats, and the round pin that floats promotes the clamping jaw through the cam groove and moves forward, and the inside in cam groove, locking clamping pin are gone into to the clamping jaw card.
Drawings
Fig. 1 is a schematic structural view of a clamping mechanism in an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the elastic device in the embodiment of the present invention, as viewed in the axial direction.
Fig. 3 is an internal structure view of a jaw assembly according to an embodiment of the present invention.
Detailed Description
In order to facilitate a better understanding of the invention, the invention will be further explained below with reference to the accompanying drawings of the related embodiments. The embodiments of the invention are shown in the drawings, but the invention is not limited to the preferred embodiments described above. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, the clamping mechanism provided in this embodiment includes a tray 1, a workpiece 2, and a chuck body 3. The workpiece 2 is placed on the tray, the chuck body 3 is arranged above the tray 1, the clamping pin 4 is arranged on the tray 1, the clamping jaw assembly 5 is arranged on the chuck body 3, and the clamping pin 4 is clamped by the clamping jaw assembly 5. The chuck body 3 is provided with a mounting hole (not shown in the figure), an elastic device 6 is arranged in the mounting hole, one end of the elastic device 6 is arranged in the mounting hole, and the other end of the elastic device 6 is abutted against the tray.
Referring to fig. 2, one end of the spring device 6 is provided with a mounting sleeve 61, the other end of the spring device 6 is provided with a return spring 62, the mounting sleeve 61 is arranged inside the mounting hole, and the return spring 62 abuts on the tray 1.
In the present embodiment, the chuck body 3 is rectangular, the number of the jaw assemblies 5 is four, and four jaw assemblies 5 are respectively disposed at four corners of the chuck body 3. The tray 1 is rectangular, the number of the clamping pins 4 is four, the four clamping pins 4 are respectively arranged at four corners of the tray 1, and the four clamping pins 4 and the four clamping jaw assemblies 5 are arranged in a one-to-one correspondence manner.
In this embodiment, when it is desired to disengage the tray 1 from the chuck body 3, the jaw assembly 5 is released, the jaw assembly 5 and the clamp pins 4 are disengaged, and the chuck body 3 moves upward, and the return spring 62 in the spring device 6 abuts against the tray 1, applying a downward pressure to the tray 1. During the upward movement of the chuck body 3, since the four clamping pins 4 are unevenly stressed, the clamping jaw assembly 5 may not be completely separated from the clamping pins 4, so that during the upward movement of the chuck body 3, the tray 1 may be moved upward along with the chuck body 3, and the separation of the tray 1 and the chuck body 3 cannot be realized. The return spring 62 applies a downward pressure to the tray 1, so that the tray 1 cannot be carried upward by the chuck body 3, and the tray 1 and the chuck body 3 can be separated smoothly.
In this embodiment, the mounting holes are distributed on two long sides of the chuck body 3, each long side is provided with a plurality of mounting holes, and the number of the mounting holes on the two long sides is equal. The number of the elastic devices 6 is more than two, and the elastic devices 6 are symmetrically arranged on two long edges of the chuck body 3. The two long edges of the chuck body 3 are provided with elastic devices 6, and one elastic device 6 or a plurality of elastic devices 6 can be arranged on each long edge. Set up a plurality of elastic devices 6 on (holding) chuck body 3, can guarantee that tray 1 atress is more abundant, set up a plurality of elastic devices 6 symmetry on two long edges of (holding) chuck body 3, can make tray 1 atress more even, can make tray 1 and (holding) chuck body 3 break away from smoothly like this better.
Referring to fig. 3, the clamping pin 4 includes a first connecting section 41, a second connecting section 42, and a third connecting section 43 connected in series, and a groove 44 is formed between the first connecting section 41 and the third connecting section 43. The clamping jaw assembly 5 comprises a clamping jaw body 51, a piston 52 and a return spring 53 are arranged in the clamping jaw body 51, a clamping hole 55 is formed in the center of the clamping jaw body 51, the clamping pin 4 extends into the clamping hole 55, a channel for a clamping jaw 56 to pass is further formed in the clamping jaw body 51, and the tip end of the clamping jaw 56 extends into the groove 44. The inside of the clamping jaw body 51 is also provided with a floating pin 57, the clamping jaw 56 is provided with a cam groove 58, the floating pin 57 extends into the cam groove 58, and the piston 52 is used for pushing the return spring 53 and the floating pin 57 to move up and down.
It should be noted that, during the actual operation of the clamping mechanism, the jaw assembly 5 moves from top to bottom, and the clamping pin 4 extends from bottom to top into the inside of the clamping hole 55, but the upper and lower positions of the clamping pin 4 and the jaw assembly 5 are reversed in fig. 3 for the convenience of description, but the structures of the clamping pin 4 and the jaw assembly 5 are not changed, and the locking and unlocking process of the clamping pin 4 is described in the perspective shown in fig. 3 when the description is made with respect to fig. 3.
In this embodiment, when it is desired to release the pallet 1, the clamp pin 4 is extended downward into the interior of the clamp hole 55 as shown in fig. 3. The piston 52 is charged, the piston 52 moves downwards, the return spring 53 and the floating pin 57 are driven to move downwards, the floating pin 57 slides from the upper end to the lower end of the cam groove 58, in the process, the floating pin 57 drives the clamping jaw 56 to move backwards, the tip of the clamping jaw 56 is disengaged from the inner part of the groove 44, and the clamping pin 4 is unlocked. When the chuck body 3 needs to be locked with the tray 1, the chuck body 3 drives the clamping jaw assembly 5 to move upwards, the piston 52 stops air inflow, the return spring 53 is reset, the piston 52 and the floating pin 57 are pushed to move upwards, the floating pin 57 slides from the lower end to the upper end of the cam groove 58, in the process, the floating pin 57 drives the clamping jaw 56 to move forwards, the tip of the clamping jaw 56 extends into the groove 44, and the clamping pin 4 is locked.
In the present embodiment, the four positioning pins include two diamond-shaped positioning pins and two cylindrical positioning pins. Two diamond-shaped locating pins are arranged at two opposite angles of the tray 1, and two cylindrical locating pins are arranged at the other two opposite angles of the tray 1. The cross sections of the second connecting sections of the two diamond-shaped positioning pins are diamond-shaped, and the cross sections of the two cylindrical positioning pins are circular. The diameter of the second connecting section of one of the two cylindrical positioning pins is larger than that of the second connecting section of the other cylindrical positioning pin, and the difference of the diameters is generally within 0.2 mm. The two diamond pins and the two cylindrical pins are used for positioning so as to match installation errors of the tray and the chuck body, once the shape and the specification of the four clamping pins are completely the same, once the installation errors exist between the tray and the chuck body, the clamping jaw assembly and the corresponding clamping pins can not be completely matched in position, and the stress between the 4 positioning pins is uneven.
The above-described embodiments describe the technical principles of the present invention, and these descriptions are only for the purpose of explaining the principles of the present invention, and should not be interpreted as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. A clamping mechanism comprises a tray, a workpiece and a chuck body, wherein the workpiece is placed on the tray, the chuck body is arranged above the tray, a clamping pin is arranged on the tray, a clamping jaw assembly is arranged on the chuck body, and the clamping pin is clamped tightly by the clamping jaw assembly, and the clamping mechanism is characterized in that:
the tray comprises a tray body and is characterized in that a mounting hole is formed in the tray body, an elastic device is arranged in the mounting hole, one end of the elastic device is arranged in the mounting hole, and the other end of the elastic device is abutted to the tray.
2. The clamping mechanism of claim 1, wherein:
the one end of spring exerciser is provided with the installation cover, the other end of spring exerciser is provided with reset spring, the installation cover sets up the inside of mounting hole, reset spring butt is in on the tray.
3. The clamping mechanism of claim 1, wherein:
the chuck body is rectangular, the number of the clamping jaw assemblies is four, and the four clamping jaw assemblies are arranged at four corners of the chuck body respectively.
4. The clamping mechanism of claim 3, wherein:
the tray is rectangular, the number of the clamping pins is four, the four clamping pins are respectively arranged at four corners of the tray, and the four clamping pins and the four clamping jaw assemblies are arranged in a one-to-one correspondence mode.
5. The clamping mechanism of claim 2, wherein:
the mounting holes are distributed on two long edges of the chuck body, a plurality of mounting holes are formed in each long edge, and the number of the mounting holes in the two long edges is equal.
6. The clamping mechanism of claim 5, wherein:
the number of the elastic devices is more than two, and the elastic devices are symmetrically arranged on the two long edges of the chuck body.
7. The clamping mechanism of claim 1, wherein:
the clamping pin comprises a first connecting section, a second connecting section and a third connecting section which are sequentially connected, and a groove is formed between the first connecting section and the third connecting section.
8. The clamping mechanism of claim 7, wherein:
the clamping jaw assembly comprises a clamping jaw body, a piston and a return spring are arranged inside the clamping jaw body, a clamping hole is formed in the center of the clamping jaw body, a clamping pin extends into the clamping hole, a channel for the clamping jaw to pass through is further formed in the clamping jaw body, and the tip end of the clamping jaw extends into the groove.
9. The clamping mechanism of claim 8, wherein:
the inside floating pin that still is provided with of clamping jaw body the cam groove has been seted up on the clamping jaw, the floating pin stretches into the inside of cam groove, the piston is used for promoting reset spring with the up-and-down motion of floating pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022459976.9U CN213536509U (en) | 2020-10-29 | 2020-10-29 | Clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022459976.9U CN213536509U (en) | 2020-10-29 | 2020-10-29 | Clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213536509U true CN213536509U (en) | 2021-06-25 |
Family
ID=76502476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022459976.9U Active CN213536509U (en) | 2020-10-29 | 2020-10-29 | Clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213536509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193349A (en) * | 2021-11-15 | 2022-03-18 | 昆山阿普顿自动化***有限公司 | Manual clamping and releasing device |
-
2020
- 2020-10-29 CN CN202022459976.9U patent/CN213536509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193349A (en) * | 2021-11-15 | 2022-03-18 | 昆山阿普顿自动化***有限公司 | Manual clamping and releasing device |
| CN114193349B (en) * | 2021-11-15 | 2023-07-11 | 昆山阿普顿自动化***有限公司 | Manual clamping and releasing device |
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