CN217433089U

CN217433089U - Clamping tool for preventing damage to clamping surface of workpiece

Info

Publication number: CN217433089U
Application number: CN202123165314.1U
Authority: CN
Inventors: 周浩; 姜连超; 李从旺; 郭小瑶
Original assignee: Nanjing Aotecar New Energy Technology Co ltd; Ma'anshan Aotejia Technology Co ltd
Current assignee: Nanjing Aotecar New Energy Technology Co ltd; Ma'anshan Aotejia Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-09-16
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a prevent to harm tight frock of clamp of work piece clamp face belongs to chuck clamping mechanism technical field, including the frock body and be located the heavy groove at frock body center, set up a plurality of guide ways of evenly distributed on the frock body, install clamping mechanism in the guide way, and be provided with control mechanism in one of them guide way, actuating mechanism is installed to one side of control mechanism in the guide way, actuating mechanism and control mechanism electric connection just drive clamping mechanism work through drive mechanism. The utility model discloses simple structure, each mechanism cooperation realizes the clamping operation, and is convenient general, and controller electric connection sensing element improves the whole degree of automation of device to realize the effective control to the chucking power through setting up pressure sensor, thereby prevent that the chucking power from warping to the damage of the certain degree that the tight face of work piece clamp caused when carrying out the clamping procedure.

Description

Clamping tool for preventing damage to workpiece clamping surface

Technical Field

The utility model belongs to the technical field of chuck clamping mechanism, concretely relates to prevent to harm tight frock of clamp of work piece clamp face.

Background

Chucks are mechanical devices used to clamp workpieces on machine tools. The chuck generally consists of a chuck body, movable jaws and jaw drive mechanisms 3, and is a machine tool accessory for clamping and positioning a workpiece by utilizing the radial movement of the movable jaws evenly distributed on the chuck body. The existing chuck clamping mechanism has the following disadvantages: 1. only small workpieces can be clamped, and large cylindrical workpieces cannot be clamped; 2. when the workpiece is clamped, the clamping force is not fixed, and the workpiece is deformed due to overlarge clamping force.

Through retrieval, a patent document with the application number of 201720753107.2 and the name of six-jaw chuck in the prior art specifically discloses a strong six-jaw chuck with a self-centering function, which consists of three centering jaws, three screws, three auxiliary jaws, a chuck body, three baffles, a support frame, three bevel gear shafts, a bevel gear disc, a first bearing, a connecting shaft, a second bearing, three pressing plates and an end cover, wherein a large shaft part is quickly positioned and preliminarily clamped through a centering positioning mechanism, and then an auxiliary clamping mechanism is utilized to perform auxiliary clamping on a workpiece; the three centering jaws adopt a linkage mode, can synchronously move in a constant speed and equidistant radial direction, and the three auxiliary jaws independently complete the clamping action. The utility model discloses a can be used to large-scale work piece, the commonality is good, presss from both sides tightly reliably, nevertheless, the controllable degree of clamping-force is low, causes the damage deformation to the work piece easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the inventor reachs through practice and summary the utility model discloses a prevent to harm tight frock of clamp of work piece clamping face, including the frock body and be located the heavy groove at frock body center, set up a plurality of guide ways of evenly distributed on the frock body, install clamping mechanism in the guide way, and be provided with control mechanism in one of them guide way, actuating mechanism is installed to one side of control mechanism in the guide way, actuating mechanism and control mechanism electric connection, and drive clamping mechanism work through drive mechanism.

Preferably, clamping mechanism includes the jack catch to and with jack catch sliding connection's removal seat, jack catch front end surface all is the arc structure. The arc structure of jack catch cooperatees with the work piece surface, is favorable to improving the chucking effect.

Preferably, the control mechanism comprises a controller and a pressure sensor, the controller is located at the bottom of the guide groove, the pressure sensor is installed at the front end of the clamping jaw of the clamping mechanism located in the guide groove, and the pressure sensor is electrically connected with the controller. The pressure sensor can measure the pressure of the clamping mechanism on the workpiece, then the pressure is transmitted to the controller, the controller monitors the clamping work, and a series of problems caused by insufficient pressure or overlarge pressure can be effectively avoided.

Specifically, the central position of the front end of the clamping jaw is provided with a clamping groove, and the pressure sensor is embedded in the clamping groove.

Specifically, the top surface of the clamping groove is fixedly provided with a rubber gasket, and the pressure sensor and the workpiece are protected to a certain extent.

Preferably, the control mechanism further comprises a sensing element, the sensing element is located at the front end of the moving seat of the clamping mechanism in the guide groove where the control mechanism is located, and the sensing element is electrically connected with the controller. When the workpiece contacts the positioning part, the sensing element sends a contact signal to the controller, and the controller controls the actuating mechanism to start so that the clamping jaws move on the channel, thereby performing clamping work.

Preferably, the movable seat comprises a positioning portion, a fixing portion and a channel, the fixing portion is located at the front end of the positioning portion and fixedly connected with the positioning portion, the channel is located in the middle of the positioning portion and used for moving a clamping jaw, the movable seat integrally extends downwards in a stepped mode, and the fixing portion is fixedly connected with the tool body.

Specifically, the fixing part is provided with an internal thread hole and is fixedly connected with the tool body through a bolt.

Preferably, the actuating mechanism comprises a starting wheel and a motor for providing power for the starting wheel, the transmission mechanism comprises a transmission wheel and a driven wheel which is matched with the transmission wheel to drive the jaw to move back and forth, the starting wheel is matched with the transmission wheel to drive the transmission mechanism to move, the motor is electrically connected with the controller, and the driven wheel penetrates through the passage to be connected with the jaw.

Compared with the prior art, the utility model discloses can obtain following technological effect:

the utility model has simple structure, is provided with a control mechanism, an actuating mechanism and a transmission mechanism which are matched with a clamping mechanism to realize clamping operation, and is convenient and universal; the controller is electrically connected with the sensing element to improve the overall automation degree of the device, and the effective control on the clamping force is realized by arranging the pressure sensor, so that the damage and deformation of the clamping force to a certain degree, which are caused by the clamping force to the workpiece clamping surface when a clamping program is carried out, are prevented.

The clamping groove is formed in the center of the front end of the clamping jaw, a pressure sensor for measuring clamping force is embedded in the clamping groove, the pressure sensor can measure the pressure of the clamping mechanism on a workpiece and transmit the pressure to the controller, and the deformation of the workpiece caused by overlarge pressure can be effectively avoided through the control of the controller; the top surface of the clamping groove is fixedly provided with a rubber gasket which plays a role in protecting the pressure sensor, and meanwhile, the rubber gasket can provide uniform surface pressure distribution, adapt to the externally pressed surface shape and mildly maintain the shape of an external object, so that a workpiece is prevented from being scratched by the clamping mechanism, and the workpiece is further protected; and the front end surface of the clamping jaw and the positioning part is of an arc structure and is respectively attached to the workpiece and the surface of the clamping seat, so that the positioning part limits the workpiece from the vertical direction, and then the workpiece is clamped by the clamping jaw in the horizontal direction, therefore, the clamping jaw is good in universality and reliable in clamping.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an actuator according to the present invention;

FIG. 3 is a schematic view of the structure of the middle clamping mechanism of the present invention

FIG. 4 is a schematic structural diagram of a pressure sensor and an inductive element and a clamping mechanism according to the present invention;

fig. 5 is a schematic structural view of the middle movable seat of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

As shown in fig. 1, the clamping tool capable of preventing damage to the clamping surface of the workpiece comprises a tool body 1, guide grooves 2, clamping mechanisms 3, a control mechanism, an actuating mechanism 5 and a sinking groove 6, wherein the guide grooves 2 are formed in the tool body 1, the number of the guide grooves 2 is six, the angle between every two adjacent guide grooves 2 is 60 degrees, the clamping mechanisms 3 are installed in the guide grooves 2, and the sinking groove 6 is located in the center of the tool body 1 and used for placing the workpiece.

As shown in fig. 2, a control mechanism is arranged in one of the guide grooves 2, the control mechanism is composed of a controller 4, a pressure sensor 41 and a sensing element 42, the pressure sensor 41 and the sensing element 42 are both electrically connected with the controller 4, the controller 4 is arranged at the bottom of the clamping mechanism 3 in the guide groove 2, an executing mechanism 5 is arranged at one side of the controller 4, the executing mechanism 5 drives the clamping mechanism 3 to work through a transmission mechanism 7, the executing mechanism 5 is composed of a starting wheel and a motor for providing power for the starting wheel, the motor is electrically connected with the controller 4, the controller 4 controls the opening and closing of the executing mechanism 5, the transmission mechanism 7 is composed of a transmission wheel 71 and a driven wheel 72 which is matched with the transmission wheel 71 to drive the clamping mechanism 3 to work, when the executing mechanism 5 receives a working signal given by the controller 4, the motor is opened and drives the starting wheel to work, the starting wheel is matched with the transmission wheel 71 to drive the transmission mechanism 7 to move, and then the clamping work is realized.

As shown in fig. 3 to 5, the clamping mechanism 3 is composed of a jaw 31 and a moving seat 32, the moving seat 32 is a portion of the clamping mechanism 3 connected to the guide groove 2, and the jaw 31 is provided on the moving seat 32. The front end surface of the jaw 31 is of an arc structure and is attached to the surface of a workpiece, a clamping groove is formed in the center position of the front end of the jaw 31 of the clamping mechanism 3 in the guide groove 2 where the control mechanism is located, a pressure sensor 41 is embedded in the clamping groove, and a rubber gasket is fixedly arranged on the top surface of the clamping groove and plays a certain role in protecting the pressure sensor 41; the movable seat 32 comprises a positioning portion 321, a fixing portion 322 which is located at the front end of the positioning portion 321 and fixedly connected with the positioning portion 321, and a channel 323 which is located in the middle of the positioning portion 321 and used for moving the clamping jaw 31, the movable seat 32 integrally extends downwards in a ladder shape, the sensing element 42 is installed at the top of the movable seat 32 of the clamping mechanism 3 in the guide groove 2 where the control mechanism is located, namely, at the front end of the positioning portion 321, the fixing portion 322 is provided with an internal thread hole, and is fixedly connected with the tool body 1 through a bolt, and the driven wheel 72 of the transmission mechanism 7 penetrates through the channel 323 to be connected with the clamping jaw 31, so as to drive the clamping jaw 31 to perform clamping work.

The working principle is as follows: when the clamping device is used, a workpiece is placed in the sink groove 6, the sensing element 42 transmits a contact signal to the controller 4, then the controller 4 gives a signal to start the actuating mechanism 5, the motor provides power for the starting wheel, the starting wheel drives the driving wheel 71 to operate, the driving wheel 71 drives the driven wheel 72 to move, the driven wheel 72 drives the jaw 31 to move back and forth, the workpiece is clamped, the rubber gasket on the jaw 31 plays a certain protection role in the jaw and reduces abrasion, meanwhile, the pressure sensor 41 in the clamping groove behind the rubber gasket continuously monitors the clamping force, the measured clamping force value is converted into an electric signal and transmitted to the controller 4, and when the clamping force reaches a set value in the controller 4, the controller 4 gives a signal to close the actuating mechanism 5, so that the clamping mechanism 3 stops working.

Claims

1. The utility model provides a prevent to damage tight frock of clamp of work piece clamp, its characterized in that: including frock body (1) and be located heavy groove (6) at frock body (1) center, set up a plurality of guide ways (2) of evenly distributed on frock body (1), install clamping mechanism (3) in guide way (2), and be provided with control mechanism in one of them guide way (2), actuating mechanism (5) are installed to one side of control mechanism in guide way (2), actuating mechanism (5) and control mechanism electric connection just drive clamping mechanism (3) work through drive mechanism (7).

2. The clamping tool for preventing the clamping surface of the workpiece from being damaged according to claim 1, characterized in that: clamping mechanism (3) are including jack catch (31) to and with jack catch (31) sliding connection's removal seat (32), jack catch (31) front end surface all is the arc structure.

3. The clamping tool for preventing the clamping surface of the workpiece from being damaged according to claim 2, characterized in that: the control mechanism comprises a controller (4) and a pressure sensor (41), the controller (4) is located at the bottom of the guide groove (2) where the control mechanism is located, the pressure sensor (41) is installed at the front end of a clamping jaw (31) of the clamping mechanism (3) located in the guide groove (2), and the pressure sensor (41) is electrically connected with the controller (4).

4. The clamping tool for preventing the workpiece clamping surface from being damaged according to claim 3, characterized in that: the center of the front end of the clamping jaw (31) is provided with a clamping groove, and the pressure sensor (41) is embedded in the clamping groove.

5. The clamping tool for preventing the workpiece clamping surface from being damaged according to claim 4, is characterized in that: and a rubber gasket is fixedly arranged on the top surface of the clamping groove.

6. The clamping tool for preventing the workpiece clamping surface from being damaged according to claim 2, is characterized in that: the control mechanism further comprises an induction element (42), the induction element (42) is located at the front end of the moving seat (32) of the clamping mechanism (3) in the guide groove (2) where the control mechanism is located, and the induction element (42) is electrically connected with the controller (4).

7. The clamping tool for preventing the workpiece clamping surface from being damaged according to any one of claims 2 to 6, wherein the clamping tool comprises: remove seat (32) including location portion (321), be located location portion (321) front end and with location portion (321) fixed connection's fixed part (322) to and be located passageway (323) that location portion (321) middle part is used for jack catch (31) to remove, remove seat (32) and wholly be echelonment downwardly extending, fixed part (322) and frock body (1) fixed connection.

8. The clamping tool for preventing the workpiece clamping surface from being damaged according to claim 7, is characterized in that: the fixing part (322) is provided with an internal thread hole and is fixedly connected with the tool body (1) through a bolt.

9. The clamping tool for preventing the workpiece clamping surface from being damaged according to claim 1, is characterized in that: the actuating mechanism (5) comprises a starting wheel and a motor for providing power for the starting wheel, the transmission mechanism (7) comprises a transmission wheel (71) and a driven wheel (72) which is matched with the transmission wheel (71) to drive the jaw (31) to move back and forth, the starting wheel is matched with the transmission wheel (71) to drive the transmission mechanism (7) to move, the motor is electrically connected with the controller (4), and the driven wheel (72) penetrates through the passage (323) to be connected with the jaw (31).