CN214080249U

CN214080249U - Pneumatic type connecting rod fixing device

Info

Publication number: CN214080249U
Application number: CN202023013706.1U
Authority: CN
Inventors: 王新茹; 顾敏明
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-31
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a pneumatic type connecting rod fixing device, including placing structure, fixed knot structure, air chamber structure and reset structure, placing mechanism places connecting rod blank, and air chamber structure passes through V type clamp plate slider and double-screw bolt with fixed knot to be connected, and air chamber structure passes through the removal of screw bolt and drives V type clamp plate slider and realize that the clamping of blank is fixed and loosen the change, and reset structure passes through the integrative nature realization of double-screw bolt and slider and resumes initial condition. The utility model discloses a pneumatic type connecting rod fixing device improves the fixed and the efficiency of changing the blank piece of course of working, and the controller of being convenient for carries out centralized control, is favorable to the integrated operation of the whole course of working of blank piece.

Description

Pneumatic type connecting rod fixing device

Technical Field

The utility model belongs to the technical field of car connecting rod anchor clamps and specifically relates to a pneumatic type connecting rod fixing device is related to.

Background

The connecting rod is one of the main transmission parts of a gasoline engine and a diesel engine, the acting force borne by the piston is transmitted to the crankshaft by connecting the piston and the crankshaft, the up-and-down motion of the piston is changed into the rotary motion of the connecting rod, and the connecting rod plays an important role in the engine. The connecting rod is manufactured by the steps of manufacturing a blank by multi-purpose die forging in the processing process of the existing connecting rod, and then, processing the blank after the processing procedures of milling, coarse grinding, drilling, grinding and the like. In the milling processing of the large and small two-plane surfaces of the blank of the connecting rod, the mode of loosening and tightening the V-shaped clamp plate nuts is adopted in the manual fixing mode in the processing process of the current connecting rod blank, the blank is taken down by the manual replacing mode through loosening the V-shaped clamp plate nuts, the manual fixing and replacing mode has the problems of complicated procedures, lower processing efficiency, low automation degree and difficult integrated processing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that prior art exists, the utility model provides a pneumatic type connecting rod fixing device improves the fixed and the efficiency of changing the blank piece of course of working, and the controller of being convenient for carries out centralized control, is favorable to the integrated operation of the whole course of working of blank piece.

The utility model provides a technical scheme that its technical problem adopted is:

a pneumatic connecting rod fixing device comprises a placing structure, a fixing structure, an air chamber structure and a resetting structure;

the placing structure comprises a connecting rod small end positioning support, a large end positioning support and a V-shaped baffle, the placing structure is positioned on the upper end cover, the upper end cover is used for placing the small end positioning support and the large end positioning support for processing a connecting rod blank, the small end positioning support is positioned at the left end of the upper end cover and is fixed on the upper end cover through a first screw, and the V-shaped baffle is positioned at the right end of the upper end cover and is fixedly connected to the upper end cover through a second screw;

the fixing structure is mainly used for clamping a blank in the machining process and comprises a cam, a V-shaped pressing plate sliding block and a V-shaped baffle, wherein the cam is used for clamping a connecting rod blank;

the air chamber structure comprises a main air chamber, a stud, a sliding block spring, a roller, a positioning pin, an air inlet hole and an air outlet hole, the air chamber structure is arranged in the device main body, the bottom of the main air chamber is provided with two air holes which are respectively the air inlet hole and the air outlet hole, the stud is in threaded connection with the V-shaped pressing plate sliding block, one end of the air chamber spring is fixedly connected to the stud, the other end of the air chamber spring is fixedly connected with the inner wall of the main air chamber, the stud moves left and right on the main air chamber and the V-shaped pressing plate sliding block, a rubber gasket is arranged at the joint of the stud and the sliding block, and the sliding block is fixedly connected with the tail end of the stud through the sliding block spring and a sliding block threaded hole; the reset structure comprises a roller, a positioning pin, a profiling cam and a cam spring, wherein the roller is fixedly connected with the positioning pin in a coaxial mode, the roller is in contact non-fixed connection with the sliding block, the roller is in contact non-fixed connection with the profiling cam, and the cam spring is arranged in the profiling cam in a coaxial mode.

The beneficial effects of the utility model are that: the utility model discloses increase the air chamber structure, promote the directional motion of piston and then control V type splint through air pump control air chamber internal gas pressure, replaced the manual operation who twists the nut, improve the fixed and efficiency of changing the blank piece of course of working. The V-shaped baffle of the placing structure is fixed by adopting a nut, the V-shaped pressing plate sliding block is adjustable, and blanks can be adapted to blanks with different lengths when placed on the positioning support. After the connecting rod blank is machined, the V-shaped clamping plate automatically moves away the blank and simultaneously restores the structure to initialize the state, so that the restoring efficiency after machining is improved. The utility model discloses an air pump control air chamber atmospheric pressure, the mode of control atmospheric pressure has the flexibility, and the controller of being convenient for carries out centralized control, is favorable to the integrated operation of the whole course of working of blank.

Drawings

Fig. 1 is a main body diagram of the device of the present invention.

Fig. 2 is a diagram of the structure of the air chamber of the present invention.

Fig. 3 is a top view of the placing structure of the present invention.

Fig. 4 is a cross-sectional view of the reduction structure of the present invention.

Fig. 5 is a cross-sectional view of the fixing structure of the present invention.

Detailed Description

As shown in fig. 1 to 5, a pneumatic type link fixing apparatus includes a placing structure, a fixing structure, an air chamber structure, and a restoring structure.

The placing structure comprises a connecting rod small end positioning support 4, a large end positioning support 21 and a V-shaped baffle 25. The placing structure is located on an upper end cover 16, a small head positioning support 4 and a large head positioning support 21 for machining a connecting rod blank are placed on the upper end cover 16, the small head positioning support 4 is located at the left end of the upper end cover 16 and fixed on the upper end cover through a first screw 3, and a V-shaped baffle 25 is located at the right end of the upper end cover 16 and fixedly connected to the upper end cover 16 through a second screw 11.

The fixing structure is mainly used for clamping a blank in the machining process and comprises a cam 13 used for clamping a connecting rod blank, a V-shaped pressing plate sliding block 1 and a V-shaped baffle 25, wherein the V-shaped pressing plate sliding block 1 is provided with a hole and connected with a stud 5, and is connected with a base 26 of the device in a manner that the cam 13 is hinged.

The air chamber structure comprises a main body air chamber 22, a stud 5, a slide block 7, a slide block spring 6, a roller 9, a positioning pin 8, an air inlet hole 19 and an air outlet hole 20. The air chamber structure is arranged in the device main body, and the bottom of a main body air chamber 22 is provided with two air holes which are respectively an air inlet hole 19 and an air outlet hole 20. The stud 5 is connected with the V-shaped pressing plate sliding block 1 through threads 17, the V-shaped pressing plate sliding block 1 is connected with the device main body through the clamping plate spring 2, one end of the air chamber spring 15 is fixedly connected to the stud 5, and the other end of the air chamber spring is fixedly connected with the inner wall of the main body air chamber 22. The stud 5 moves left and right on the main air chamber 22 and the V-shaped pressure plate slide block 1. The stud 5 is provided with a rubber gasket 23 at the joint with the slide block 7, and the rubber gasket plays a role in ensuring the sealing performance of the main air chamber 22. The sliding block 7 is fixedly connected with the tail end of the stud 5 through a sliding block spring 6 and a sliding block threaded hole 24.

The reset structure comprises a roller 9, a positioning pin 8, a profiling cam 10 and a cam spring 18. The roller 9 is coaxially and fixedly connected with the positioning pin 8, the roller 9 is in contact non-fixed connection with the sliding block 7, the roller 9 is in contact non-fixed connection with the profiling cam 10, and the cam spring 18 is coaxially arranged in the profiling cam 10.

Connecting rod blank fixed process: the connecting rod blank is horizontally placed on the small-end positioning support 4, the air inlet hole 19 and the air outlet hole 20 in the air chamber structure are both in a closed state, and the air pressure in the air chamber is consistent with the external atmospheric pressure. In the process of clamping the blank, the air inlet hole 19 in the air chamber structure is in an open state, the air outlet hole 20 is in a closed state, the air pump is started to inflate the air chamber structure, the air pressure in the air chamber structure will rise, when the air pressure rises, under the pressure effect generated by the pressure difference between the air pressure in the air chamber and the external atmospheric pressure, the sliding block 7 drives the stud 5 to directionally move towards the roller direction, the left end of the air chamber spring 15 is fixedly connected with the inner wall of the air chamber, the right end of the air chamber spring 15 is fixedly connected with the stud 5, the air chamber spring 15 is stretched in the moving process of the stud 5, the head end of the stud 5 penetrates through a threaded hole 17 between the clamp plate spring 2 and the V-shaped press plate sliding block 1 and is fixedly connected with a nut 14, the stud 5 drives the V-shaped press plate sliding block 1 to rotate towards the blank piece direction when moving, so that the connecting rod blank piece is clamped to a machinable state on the upper end cover 16, and the clamp plate spring 2 penetrating through the stud 5 between the V-shaped press plate sliding block 1 and the device is compressed. Meanwhile, in the process that the pressure generated by the air pressure difference drives the sliding block 7 to move, the sliding block 7 horizontally pushes the roller 9 to horizontally move, the roller 9 horizontally moves to push the explorator cam 10 to rotate for a certain angle, and the cam spring 18 arranged in the explorator cam 10 is in a screwed state.

The restoration process of the fixing device: after the connecting rod blank is processed by milling a plane, the air outlet hole 20 of the air chamber structure is in an open state, the air inlet hole 19 is in a closed state, air in the air chamber is discharged through the air outlet hole 20, and the air pressure in the air chamber is gradually reduced to be the same as the external air pressure. In the process of reducing the air pressure in the air chamber, the acting force of the air pressure on the sliding block 7 is gradually reduced, the stud 5 starts to move horizontally in the reverse direction under the action of the tensile force generated by the deformation of the air chamber spring 15 and moves in the reverse direction together with the sliding block 7 fixed at the tail end of the stud 5 until the air chamber spring 15 is restored to the original length. The cam 10 is rotated in the direction of the roller 9 to be restored to the original state by the action of the built-in cam spring 18. The clamping plate spring 2 deforms to generate thrust to push the V-shaped pressing plate sliding block 1 to rotate to the original state in the direction far away from the blank piece by a certain angle, and the blank piece placed on the small-end positioning support 4 of the upper end cover 16 can be taken down.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A pneumatic connecting rod fixing device is characterized by comprising a placing structure, a fixing structure, an air chamber structure and a resetting structure;

the placing structure comprises a connecting rod small-end positioning support (4), a large-end positioning support (21) and a V-shaped baffle (25), the placing structure is positioned on an upper end cover (16), the upper end cover (16) is used for placing the small-end positioning support (4) and the large-end positioning support (21) for processing a connecting rod blank, the small-end positioning support (4) is positioned at the left end of the upper end cover (16) and fixed on the upper end cover through a first screw (3), and the V-shaped baffle (25) is positioned at the right end of the upper end cover (16) and fixedly connected to the upper end cover (16) through a second screw (11);

the fixing structure is mainly used for clamping a blank in the machining process and comprises a cam (13) for clamping a connecting rod blank, a V-shaped pressing plate sliding block (1) and a V-shaped baffle (25), wherein the V-shaped pressing plate sliding block (1) is provided with a hole which is connected with a stud (5) and is connected with a base (26) of the device in a manner that the cam (13) is hinged;

the air chamber structure comprises a main air chamber (22), a stud (5), a slide block (7), a slide block spring (6), a roller (9), a positioning pin (8), an air inlet hole (19) and an air outlet hole (20), the air chamber structure is arranged in a device main body, two air holes are formed in the bottom of a main body air chamber (22), namely an air inlet hole (19) and an air outlet hole (20), a stud (5) is connected with a V-shaped pressing plate sliding block (1) through a thread (17), one end of an air chamber spring (15) is fixedly connected to the stud (5), the other end of the air chamber spring is fixedly connected with the inner wall of the main body air chamber (22), the stud (5) moves left and right between the main body air chamber (22) and the V-shaped pressing plate sliding block (1), a rubber gasket (23) is placed at the connection position of the stud (5) and a sliding block (7), and the sliding block (7) is fixedly connected to the tail end of the stud (5) through a sliding block spring (6) and a sliding block threaded hole (24);

the reset structure comprises a roller (9), a positioning pin (8), a profiling cam (10) and a cam spring (18), wherein the roller (9) is fixedly connected with the positioning pin (8) in a coaxial mode, the roller (9) is connected with a sliding block (7) in a non-fixed mode in a contact mode, the roller (9) is connected with the profiling cam (10) in a non-fixed mode in a contact mode, and the cam spring (18) is arranged in the profiling cam (10) in a coaxial mode.