CN218801803U

CN218801803U - Clamping device

Info

Publication number: CN218801803U
Application number: CN202223331865.5U
Authority: CN
Inventors: 张龙龙; 胡刚岭; 王正国; 孙杰
Original assignee: Suzhou Microport Orthopedic Instruments Co ltd
Current assignee: Suzhou Microport Orthopedic Instruments Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-04-07
Anticipated expiration: 2032-12-13

Abstract

The utility model provides a clamping device, including fixture and power unit. The clamping mechanism comprises a main body and a clamping jaw, and the clamping jaw can move along the radial direction of the main body; the power mechanism is connected with the clamping jaw; in a working state, the power mechanism applies acting force to the clamping jaw to enable the clamping jaw to move towards the outer direction of the main body until the clamping jaw abuts against the inner side wall of the part in the inner cavity of the part; in a non-working state, the jaws are close to each other towards the central axis direction of the main body. The utility model discloses an in jack catch slidable located the sliding tray, adopt power take off spare to contradict with the jack catch and be connected, can make the jack catch remove towards the outside direction of main part along the sliding tray, until the jack catch at the inside wall of the inner chamber butt part of part, accomplish the centre gripping to the part, avoid the part to connect the sword vestige outside the outward appearance that many times clamping processing leads to, improve parts machining efficiency and quality.

Description

Clamping device

Technical Field

The utility model relates to a parts machining technical field especially relates to a clamping device.

Background

At present, medical instrument surgical tools are various in types and shapes. In the mechanical processing, for the part processing with irregular shape and containing an inner cavity, the shape processing of the clamped part is generally adopted because no special clamping device is provided, and the outer surface needs to be processed twice or more than twice because the part is clamped outside, so that the part is scrapped because the appearance has traces. And when the inner cavity of the part is large and the side wall of the part is thin, the part is easy to deform.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clamping device, through the inner chamber wall of centre gripping part, the outward appearance of avoiding the part clamping processing to lead to many times connects the sword vestige, improves parts machining efficiency and quality.

In order to achieve the above object, in a first aspect, the present invention provides a clamping device, which comprises a clamping mechanism and a power mechanism. The clamping mechanism comprises a main body and a clamping jaw, and the clamping jaw can move along the radial direction of the main body;

the power mechanism is connected with the clamping jaw;

in a working state, the power mechanism applies acting force to the clamping jaw to enable the clamping jaw to move towards the outer direction of the main body until the clamping jaw abuts against the inner side wall of the part in the inner cavity of the part;

in a non-working state, the jaws are close to each other towards the central axis direction of the main body.

Optionally, the main body is provided with sliding grooves along a radial direction thereof, at least three sliding grooves are arranged on the main body at intervals, and each sliding groove is provided with the clamping jaw; the main body is provided with a power output hole; one end of the sliding groove extends to the inner side wall of the power output hole, so that the power output hole is communicated with the sliding groove; the clamping jaw is provided with an abutting part, and the abutting part extends into the power output hole; the power mechanism comprises a power output piece, and the power output piece is movably arranged in the power output hole and can stretch out and draw back along the axial direction of the power output hole; in a working state, the power output piece is abutted against the abutting part to enable the clamping jaw to move.

Optionally, the power output part is provided with a conical ejector rod, and the surface of the conical ejector rod, which is close to the clamping jaw, is an inclined surface; the conflict portion has the skew wall, the skew wall with the inclination of inclined plane matches.

Optionally, the clamping mechanism further comprises an elastic member and a pressing plate; the pressing plate is arranged on the outer side wall of the main body and is positioned at the other end of the sliding groove; the elastic piece is located in the sliding groove, one end of the elastic piece is abutted to the pressing plate, and the other end of the elastic piece is connected with the clamping jaw.

Optionally, the clamping mechanism further comprises an inductor; the clamping jaw further comprises a clamping part; the inductor is located the clamping part, the inductor be used for with the inside wall butt of part, and detect the jack catch is right part effort.

Optionally, the clamping mechanism further comprises a cylinder assembly; the clamping jaw also comprises a connecting part, and the connecting part and the clamping part are positioned on the same side of the clamping jaw and are stepped; the air cylinder assembly is arranged on the connecting part, and a telescopic rod of the air cylinder assembly is used for applying acting force to the inner side wall of the part; an angle is formed between the connecting part and the side wall adjacent to the clamping part, so that the telescopic direction of the telescopic rod is inclined to be close to the clamping part.

Optionally, the cylinder assembly comprises a plurality of telescopic cylinders; the cylinder assembly is communicated with the air pipe, and the telescopic distance of each telescopic cylinder can be different.

The bottom of sliding tray has seted up the holding tank, the holding tank is followed the one end of sliding tray extends to the other end of sliding tray, the holding tank is used for holding the trachea.

Optionally, the inner side wall of the bottom of the sliding groove is provided with a limiting groove, the bottom of the clamping jaw corresponds to the limiting groove and is provided with a limiting block, and the limiting block is matched with the limiting groove.

Optionally, the power mechanism comprises a motor and a transmission rod, and the motor is connected with the transmission rod; the power output part is provided with a worm, and the worm is meshed with the transmission rod. The device also comprises a base; the power mechanism and the clamping mechanism are arranged on the base.

The beneficial effects of the utility model reside in that: through radially seting up the sliding tray at the main part along it, locate the sliding tray with jack catch slidable in, adopt power take off spare to contradict with the jack catch and be connected, can make the jack catch move towards the outside direction of main part along the sliding tray, until the inside wall of jack catch butt part in the inner chamber of part, accomplish the centre gripping to the part, avoid the part to connect the sword vestige in the outward appearance that clamping processing leads to many times, improve parts machining efficiency and quality.

Drawings

Fig. 1 is an axial view of a clamping device according to an embodiment of the present invention;

fig. 2 is a front view of a clamping part of a clamping device provided by the present invention;

fig. 3 is an assembly view of a jaw, sensor and cylinder assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the clamping device according to the embodiment of the present invention after the main body and the base are removed;

fig. 5 is a cross-sectional view of a jaw clamping part according to an embodiment of the present invention.

Reference numerals:

the clamping mechanism comprises a base 100, a clamping mechanism 200, a main body 210, a sliding groove 211, a power output hole 212, a limiting groove 213, a receiving groove 214, a claw 220, an interference part 221, a clamping part 222, a connecting part 223, a limiting block 224, an elastic part 230, a pressing plate 240, an inductor 250, a cylinder assembly 260, an air pipe 261, a power mechanism 300, a power output part 310, a conical ejector rod 311, a worm 312, a motor 320, a transmission rod 330 and a part 400.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

To solve the problems in the prior art, an embodiment of the present invention provides a clamping device, which is shown in fig. 1 and 2 and comprises a clamping mechanism 200 and a power mechanism 300, wherein the clamping mechanism 200 and the power mechanism 300 are all disposed on the base 100. The clamping mechanism 200 includes a main body 210 and a clamping jaw 220, the main body 210 has a sliding groove 211 along a radial direction thereof, and the clamping jaw 220 is movably disposed in the sliding groove 211. The power mechanism 300 comprises a power output member 310, and the power output member 310 is connected with the jaw 220. In an operating state, the power take-off 310 applies an acting force to the jaw 220, so that the jaw 220 moves along the sliding groove 211 towards the outer direction of the main body 210 until the jaw 220 abuts against the inner side wall of the part 400 in the inner cavity of the part 400, and the clamping in the part 400 is completed. In a non-operating state, the jaws 220 are moved toward each other in a direction of a central axis of the body 210 through the sliding grooves 211, thereby facilitating the installation of the parts 400.

In this embodiment, the main body 210 is a cylindrical structure, the plurality of sliding grooves 211 are disposed on the upper end surface of the main body 210, the plurality of sliding grooves 211 are disposed along the central axis of the main body 210, and the angles between adjacent sliding grooves 211 are the same. When the clamping device clamps the part 400, acting force is applied to the clamping jaw 220 through the power output part 310, so that the clamping jaw 220 moves towards the outer direction of the main body 210 along the sliding groove 211 until the clamping jaw 220 abuts against the inner side wall of the part 400 in the inner cavity of the part 400, and the clamping of the inner part of the part 400 is completed. It should be noted that the power output member 310 in this embodiment is driven by a motor to move so as to abut against the pawl 220. In some embodiments, it may be arranged that the pto member 310 is moved by manual operation of a worker to provide a clamping force to the pawl 220.

In addition, in order to secure the clamping firmness, it is preferable that the number of the sliding grooves 211 and the jaws 220 is set to at least three. In this embodiment, the number of the sliding grooves 211 and the jaws 220 is set to four.

Specifically, the inner side wall at the bottom of the sliding groove 211 is provided with a limiting groove 213, the bottom of the clamping jaw 220 corresponds to the limiting groove 213 and is provided with a limiting block 224, and the limiting block 224 is matched with the limiting groove 213. Through setting up spacing groove 213 with spacing block 224 plays certain limiting displacement when jack catch 220 removes, has guaranteed the stability when jack catch 220 removes.

Optionally, a power output hole 212 is formed at a central axis of the main body 210. One end of the sliding groove 211 extends to the inner side wall of the pto hole, so that the pto hole 212 is communicated with one end of each sliding groove 211. The pawl 220 has an interference portion 221, and the interference portion 221 extends into the power take-off hole 212. The pto member 310 is movably disposed in the pto hole 212 and is capable of extending and retracting along an axial direction of the pto hole 212, and in a working state, the pto member 310 moves upward to abut against the abutting portion 221, so that the latch 220 moves along the sliding groove 211.

Specifically, referring to fig. 3 and 4, the power output member 310 has a conical push rod 311, a surface of the conical push rod close to the jaw is an inclined surface, and the interference portion 221 has an inclined wall, and the inclined wall is matched with an inclined angle of the conical push rod 311.

In this embodiment, the inclined wall is matched with the inclined angle of the conical top bar 311, so that when the conical top bar 311 moves upwards, each of the jaws 220 moves along the sliding groove 211 and towards the outside of the main body 210, and the jaws 220 are prevented from being jacked up.

Further, the power mechanism 300 includes a motor 320 and a transmission rod 330, the power output member 310 has a worm 312, the worm 312 is engaged with the transmission rod 330, and the worm 312 is perpendicular to the transmission rod 330. The transmission rod 330 is provided with a transmission gear, and the motor 320 provides a power source to drive the worm 312 to move through the rotation of the transmission rod 330, so that the power output part 310 moves up and down.

Optionally, referring to fig. 5, the clamping mechanism 200 further includes an elastic member 230 and a pressing plate 240, wherein the pressing plate 240 is disposed on an outer side wall of the main body 210 and is located at the other end of the sliding groove 211. The elastic member 230 is located in the sliding groove 211, one end of the elastic member 230 abuts against the pressing plate 240, and the other end of the elastic member 230 is connected to the latch 220.

In this embodiment, the pressing plate 240 is detachably connected to the main body 210, and the elastic member 230 is a spring. By adopting the elastic member 230 to connect the jaw 220, the elastic member 230 always applies an acting force to the jaw 220 in the direction towards the power output hole 212, and when the power output member 310 moves back, the elastic member 230 pushes the jaw 220 to move to the initial position. In addition, due to the action of the elastic member 230, a certain buffer effect is achieved, and damage to the part 400 caused by an excessively high moving speed when the jaw 220 clamps the part 400 is avoided.

Optionally, referring to fig. 3, the clamping mechanism 200 further includes a sensor 250, the clamping jaw 220 further includes a clamping portion 222, the sensor 250 is disposed on the clamping portion 222, and the sensor 250 is configured to abut against an inner side wall of the part 400 and detect an acting force of the clamping jaw 220 on the part 400.

In this embodiment, the sensor 250 is arranged to monitor stress data of the part 400 in real time during processing of the part 400, and the clamping force is adjusted according to the stress of the part 400, so as to reduce the clamping deformation of the part 400.

Optionally, the clamping mechanism 200 further includes a cylinder assembly 260, the jaw 220 further includes a connecting portion 223, the connecting portion 223 and the clamping portion 222 are located on the same side of the jaw 220 and are stepped, and the inclined wall is located on the other side of the jaw 220 and is close to the central axis of the main body 210. The cylinder assembly 260 is disposed at the connecting portion 223, and the telescopic rod of the cylinder assembly 260 is used for applying an acting force to the inner side wall of the part 400.

Further, since the connecting portion 223 and the side wall adjacent to the clamping portion 222 have an angle therebetween, when the cylinder assembly 260 is installed at the connecting portion 223, the expansion and contraction direction of the expansion link is inclined and approaches in the direction of the clamping portion 222.

In this embodiment, the telescopic rod of the cylinder assembly 260 is inclined downward, so as to apply an obliquely downward acting force to the inner side wall of the part 400, and the clamping firmness is further ensured by the arrangement of the cylinder assembly 260. In addition, when the part 400 is processed, due to the action of external force, when the sensor 250 detects that the stress on the jaw 220 at the side wall of the part 400 is greater than the deformation value of the part 400, the air pressure of the air cylinder assembly 260 on the jaw 220 is automatically increased, so that the telescopic rod bears more force, the stress balance is achieved, and the vibration and the displacement generated in the processing process of the part 400 are avoided.

In addition, each cylinder assembly 260 is independently communicated with a corresponding air pipe 261, each cylinder assembly 260 comprises a plurality of telescopic cylinders, and the telescopic distance of each telescopic cylinder can be different. The advantage that sets up like this can compress tightly different inner chamber shapes, effectively improves clamping device's commonality.

Optionally, a receiving groove 214 is formed at the bottom of the sliding groove 211, the receiving groove 214 extends from one end of the sliding groove 211 to the other end of the sliding groove 211, and the receiving groove 214 is used for receiving the air pipe 261.

By disposing the air tube 261 in the receiving groove 214, the air tube 261 is prevented from interfering with the clamping of the part 400 by the clamping device.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. A clamping device is characterized by comprising a clamping mechanism and a power mechanism;

the clamping mechanism comprises a main body and a clamping jaw, and the clamping jaw can move along the radial direction of the main body;

the power mechanism is connected with the clamping jaw;

2. The clamping device as claimed in claim 1, wherein the main body is provided with sliding grooves along a radial direction thereof, at least three sliding grooves are arranged on the main body at intervals, and each sliding groove is provided with the clamping jaw;

the main body is provided with a power output hole;

one end of the sliding groove extends to the inner side wall of the power output hole, so that the power output hole is communicated with the sliding groove;

the clamping jaw is provided with an abutting part, and the abutting part extends into the power output hole;

the power mechanism comprises a power output piece, and the power output piece is movably arranged in the power output hole and can stretch and retract along the axial direction of the power output hole;

in a working state, the power output piece is abutted against the abutting part to enable the clamping jaw to move.

3. A holding arrangement as claimed in claim 2, wherein the pto has a tapered ram, the face of the tapered ram adjacent the jaws being an inclined face;

the conflict portion has the skew wall, the skew wall with the skew surface inclination matches.

4. A clamping device as claimed in any one of claims 2 or 3, wherein the clamping means further comprises a resilient member and a pressure plate;

the pressing plate is arranged on the outer side wall of the main body and is positioned at the other end of the sliding groove;

the elastic piece is located in the sliding groove, one end of the elastic piece is abutted to the pressing plate, and the other end of the elastic piece is connected with the clamping jaw.

5. The clamping device of claim 2, wherein said clamping mechanism further comprises an inductor;

the clamping jaw further comprises a clamping part;

the inductor is located the clamping part, the inductor be used for with the inside wall butt of part, and detect the jack catch is right part effort.

6. The clamping device of claim 5, wherein said clamping mechanism further comprises a cylinder assembly;

the clamping jaw also comprises a connecting part, and the connecting part and the clamping part are positioned on the same side of the clamping jaw and are stepped;

the air cylinder assembly is arranged on the connecting part, and a telescopic rod of the air cylinder assembly is used for applying acting force to the inner side wall of the part;

an angle is formed between the connecting part and the side wall adjacent to the clamping part, so that the telescopic direction of the telescopic rod is inclined to be close to the clamping part.

7. Clamping device according to claim 6, characterized in that:

the cylinder assembly comprises a plurality of telescopic cylinders; the cylinder assembly is communicated with the air pipe, and the telescopic distance of each telescopic cylinder can be different;

8. The clamping device as claimed in claim 2, wherein a limiting groove is formed in the inner side wall of the bottom of the sliding groove, a limiting block is arranged at the bottom of the clamping jaw corresponding to the limiting groove, and the limiting block is matched with the limiting groove.

9. The clamping device of claim 2, further comprising a base;

the power mechanism and the clamping mechanism are arranged on the base;

the power mechanism comprises a motor and a transmission rod, and the motor is connected with the transmission rod;

the power output part is provided with a worm, and the worm is meshed with the transmission rod.