CN211759884U - Automatic pinhole tensioning tool for piston machining - Google Patents

Abstract

The utility model discloses an automatic pin hole tensioning tool for processing a piston, which comprises a mounting seat, a clamping mechanism and a tensioning component. An inner sleeve is fixedly connected to the upper surface of the middle part of the mounting seat, and two symmetrical pairs are arranged on the side wall of the inner sleeve. Distributed rectangular grooves, the inner arc surface of the inner sleeve is slidably connected with a movable plate, and the outer arc surface of the movable plate is provided with two symmetrically distributed sliders, the sliders are slidably connected to the inside of the chute of the inner sleeve. The middle part of the lower surface is fixedly connected with a motor, the outer arc surface of the output shaft of the motor is rotatably connected with the inner arc surface of the circular hole in the middle of the mounting seat, and the end of the output shaft of the motor is fixedly connected with a screw rod, and the lower end of the screw rod is circular with the middle of the bottom plate of the inner sleeve. The holes are connected through the bearing rotation, and the upper end of the screw is connected with the middle of the moving plate. , reducing manual labor and easy to use.

Description

Automatic pin hole tensioning tool for piston machining

technical field

The utility model relates to the technical field of tooling, in particular to an automatic pin hole tensioning tool for machining pistons.

Background technique

In the piston automatic machining industry, some machining processes need to use the piston pin hole for positioning and clamping, and at the same time have high precision requirements for the pin hole positioning device. , the main shaft is tightened and positioned, and the production efficiency is low. In the prior art: the patent with the authorized publication number CN 205927960 U discloses an automatic pin hole tightening tool for piston processing, and relates to the technical field of auxiliary tools for piston processing, including positioning discs, clamping jaws seat and tensioning mechanism, the positioning plate is connected and fixed with the main shaft of the machine tool, the claw seat is fixed in the inner hole of the positioning plate, the claw seat and the positioning plate are connected by a pin, and a spring is provided on the periphery of the pin ,A tensioning mechanism centered on the pull rod is assembled inside the claw seat. The tensioning mechanism is assembled on the pull rod in sequence, the upper V-shaped block, the lower V-shaped block, and two symmetrically distributed split pin holes Claws, fixing sleeves and nuts, there are guide sleeves and side guards around the upper V-shaped block, and a cover plate on the top. The degree of automation is not high, the tension is not strong enough, the stability is low, and it is inconvenient to use. For this reason, we propose piston processing. The automatic pin hole tensioning tool solves the above defects.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic pin hole tightening tool for piston processing, which can automatically position and tighten the piston pin hole, with high automation, precise positioning, firm tightening, high stability, and reduced It saves manual labor, is convenient to use, and can effectively solve the problems in the background technology.

In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions: an automatic pin hole tensioning tool for processing a piston, including a mounting seat, a clamping mechanism and a tensioning assembly;

Mounting seat: There are four evenly distributed mounting holes on the outer edge of its surface, an inner sleeve is fixedly connected to the upper surface of the middle, and two symmetrically distributed rectangular grooves are arranged on the side wall of the inner sleeve. A moving plate is slidably connected to the surface of the moving plate. The outer arc surface of the moving plate is provided with two symmetrically distributed sliders. The sliders are slidably connected to the inside of the chute of the inner sleeve. There is a motor, the outer arc surface of the output shaft of the motor is rotatably connected with the inner arc surface of the circular hole in the middle of the mounting seat, and the end of the output shaft of the motor is fixedly connected with a screw rod, and the lower end of the screw rod and the circular hole in the middle of the bottom plate of the inner sleeve pass through the bearing. Rotating connection, the upper end of the screw is screwed with the middle part of the moving plate;

Clamping mechanism: set on the outer edge of the upper surface of the mounting seat;

Tensioning assembly: set on the lower surface of the moving plate; the tensioning assembly is set corresponding to the rectangular groove;

Wherein: it also includes a PLC controller, the PLC controller is fixedly connected to the outer edge of the upper surface of the mounting seat, the input end of the PLC controller is electrically connected to an external power supply, and the output end of the PLC controller is electrically connected to the input of the motor Put the piston inside the limit slot, turn on the motor through the PLC controller, the output shaft of the motor drives the screw to rotate, the screw drives the moving plate to slide down, and when the moving plate moves down, it drives the top of the first connecting rod downward. Move, the top end of the first connecting rod rotates along the top end of the second connecting rod during the downward movement, so that the lower end of the first connecting rod drives the pulling claw to be inserted into the pin hole of the piston. The first connecting rod drives the claw to tighten the pin hole of the piston. When the pressure sensor detects that the pressure of the claw on the piston reaches the set value, it controls the motor to stop, and then starts the electric push rod, which drives the arc splint. The outer arc surface of the piston is clamped to further improve the stability of the clamping of the piston. The automatic pin hole tightening tool for processing the piston automatically positions and tightens the piston pin hole, with a high degree of automation, accurate positioning, firm tightening and stability. It has high performance, reduces manual labor, and is easy to use.

Further, the clamping mechanism includes a support plate, an electric push rod and an arc-shaped splint, the support plate is fixedly connected to the outer edge of the upper surface of the mounting seat, and the electric push rod is fixedly connected to the inner side of the support plate, so The middle part of the outer arc surface of the arc-shaped splint is fixedly connected with the inner end of the electric push rod, the input end of the electric push rod is electrically connected to the output end of the PLC controller, and the bottom of the piston is pressed and fixed to further improve the clamping stability.

Further, the tensioning assembly includes a first connecting rod, a second connecting rod and a pulling claw, the top end of the first connecting rod is connected with the lower surface of the moving plate by a hinge, and the bottom end of the first connecting rod is set. There is a pulling claw, the top end of the second connecting rod is rotatably connected with the outer arc surface of the rotating shaft in the middle of the first connecting rod, the bottom end of the second connecting rod is connected with the upper surface of the bottom plate of the inner sleeve through a hinge, and the first connecting rod is connected by a hinge. The first connecting rod, the second connecting rod and the pulling claw are all arranged corresponding to the rectangular grooves. The moving plate drives the top end of the first connecting rod to move downward, and the top end of the first connecting rod moves along the second connecting rod during the downward movement. The top end of the first connecting rod rotates, so that the lower end of the first connecting rod drives the pulling claw to be inserted into the pin hole of the piston. As the moving plate continues to move down, the first connecting rod drives the pulling claw to tighten the pin hole of the piston.

Further, it also includes a pressure sensor, the pressure sensor is fixedly connected to the lower surface of the pulling claw, the output end of the pressure sensor is electrically connected to the input end of the PLC controller, and the pressure on the piston pin hole is detected by the pressure sensor, so as to determine whether the tension is tight. in place to protect the motor.

Further, it also includes a limit groove, the limit groove is arranged on the inner side of the upper surface of the mounting seat, and the limit groove is correspondingly arranged with the outer arc surface of the inner sleeve to limit the bottom of the piston and improve the positioning. stability.

Compared with the prior art, the beneficial effects of the present utility model are: the automatic pin hole tensioning tool for processing the piston has the following advantages:

The piston is placed inside the limit slot, and the motor is turned on through the PLC controller. The output shaft of the motor drives the screw to rotate, and the screw drives the moving plate to slide down. When the moving plate moves down, it drives the top of the first connecting rod to move down. The top end of the first connecting rod rotates along the top end of the second connecting rod during the downward movement, so that the lower end of the first connecting rod drives the pulling claw to be inserted into the pin hole of the piston. The first connecting rod drives the pulling claw to tighten the pin hole of the piston. When the pressure sensor detects that the pressure of the pulling claw on the piston reaches the set value, it controls the motor to stop, and then starts the electric push rod. The electric push rod drives the arc splint to the piston. The outer arc surface is clamped to further improve the stability of the clamping of the piston. The automatic pin hole tightening tool for processing the piston automatically positions and tightens the piston pin hole, with a high degree of automation, accurate positioning, firm tightening and high stability. , reducing manual labor and easy to use.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic cross-sectional plan structure diagram of the utility model.

In the picture: 1 mounting seat, 2 inner sleeve, 3 PLC controller, 4 mounting holes, 5 clamping mechanism, 501 support plate, 502 electric push rod, 503 arc splint, 6 rectangular slot, 7 movable plate, 8 slider , 9 tensioning components, 91 first connecting rod, 92 second connecting rod, 93 pulling claw, 10 motor, 11 screw rod, 12 limit groove, 13 pressure sensor.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-2 , the present utility model provides a technical solution: an automatic pin hole tensioning tool for machining pistons, including a mounting seat 1 , a clamping mechanism 5 and a tensioning assembly 9 ;

Mounting seat 1: four evenly distributed mounting holes 4 are arranged on the outer edge of its surface, and an inner sleeve 2 is fixedly connected to the upper surface of the inner sleeve 2. The side wall of the inner sleeve 2 is provided with two symmetrically distributed rectangular slots 6, The inner arc surface of the sleeve 2 is slidably connected with a moving plate 7 , and the outer arc surface of the moving plate 7 is provided with two symmetrically distributed sliders 8 . The middle part of the lower surface of the motor 10 is fixedly connected with the motor 10, the outer arc surface of the output shaft of the motor 10 is rotatably connected with the inner arc surface of the circular hole in the middle part of the mounting seat 1, and the end of the output shaft of the motor 10 is fixedly connected with a screw 11, and the lower end of the screw 11 is connected with The circular hole in the middle of the bottom plate of the inner sleeve 2 is rotatably connected by a bearing, and the upper end of the screw 11 is threadedly connected with the middle of the moving plate 7;

Clamping mechanism 5: including a support plate 501, an electric push rod 502 and an arc-shaped splint 503, the support plate 501 is fixedly connected to the outer edge of the upper surface of the mounting seat 1, the electric push rod 502 is fixedly connected to the inner side of the support plate 501, and the arc The middle part of the outer arc surface of the shaped splint 503 is fixedly connected with the inner end of the electric push rod 502, and the input end of the electric push rod 502 is electrically connected to the output end of the PLC controller 3, and the bottom of the piston is pressed and fixed to further improve the clamping stability;

Tensioning assembly 9: including a first connecting rod 91, a second connecting rod 92 and a pulling claw 93, the top end of the first connecting rod 91 is connected with the lower surface of the moving plate 7 through a hinge, and the bottom end of the first connecting rod 91 is provided with Pulling claw 93, the top end of the second connecting rod 92 is rotatably connected with the outer arc surface of the rotating shaft in the middle of the first connecting rod 91, the bottom end of the second connecting rod 92 is connected with the upper surface of the bottom plate of the inner sleeve 2 through a hinge, and the first connecting rod 92 is hinged. The rod 91, the second connecting rod 92 and the pulling claw 93 are all set corresponding to the rectangular groove 6. The moving plate 7 drives the top end of the first connecting rod 91 to move downward. The top end of the second connecting rod 92 rotates, so that the lower end of the first connecting rod 91 drives the pulling claw 93 to be inserted into the pin hole of the piston. The pin hole of the piston is tightened;

Wherein: it also includes a pressure sensor 13, the pressure sensor 13 is fixedly connected to the lower surface of the pulling claw 93, the output end of the pressure sensor 13 is electrically connected to the input end of the PLC controller 3, and the pressure on the piston pin hole is detected by the pressure sensor 13, Thereby, it is determined whether the tension is in place, and the motor 10 is protected.

Wherein: it also includes a limit groove 12, the limit groove 12 is arranged on the inner side of the upper surface of the mounting seat 1, and the limit groove 12 is correspondingly arranged with the outer arc surface of the inner sleeve 2 to limit the bottom of the piston and improve the positioning stability.

Wherein: also includes a PLC controller 3, the PLC controller 3 is fixedly connected to the outer edge of the upper surface of the mounting base 1, the input end of the PLC controller 3 is electrically connected to an external power source, and the output end of the PLC controller 3 is electrically connected to the input of the motor 10 end.

In use: fix the mounting seat 1 on the worktable of the machine tool through the mounting hole 4, place the piston inside the limit slot 12, turn on the motor 10 through the PLC controller 3, and the output shaft of the motor 10 drives the screw 11 to rotate, The screw 11 drives the moving plate 7 to slide downward. When the moving plate 7 moves downward, it drives the top end of the first connecting rod 91 to move downward, and the top end of the first connecting rod 91 moves along the second connecting rod 92 during the downward movement. The top end of the first connecting rod 91 rotates, so that the lower end of the first connecting rod 91 drives the pulling claw 93 to be inserted into the pin hole of the piston. As the moving plate 7 continues to move down, the first connecting rod 91 drives the pulling claw 93 to tighten the pin hole of the piston. , when the pressure sensor 13 detects that the pressure of the claw 93 on the piston reaches the set value, the control motor 10 stops, and then the electric push rod 502 is activated, and the electric push rod 502 drives the arc splint 503 to clamp the outer arc surface of the piston, Further improve the stability of the clamping of the piston.

It is worth noting that the specific model of the PLC controller 3 disclosed in this embodiment is Siemens S7-200, and the electric push rod 502, the motor 10, the pressure sensor 13 and the motor 31 can be freely configured according to actual application scenarios. 502 is recommended to use the WDTP type miniature electric push rod produced by Wuxi Mingyao Electro-hydraulic Actuator Factory, the motor 10 can be selected from the 86 series stepping motor produced by Dongguan Moku Electromechanical Co., Ltd., and the PLC controller 3 controls the electric push rod 502, The operation of the motor 10 and the pressure sensor 13 adopts the methods commonly used in the prior art.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. Taut frock of automatic pinhole of piston processing, its characterized in that: comprises a mounting seat (1), a clamping mechanism (5) and a tensioning component (9);

mounting seat (1): four mounting holes (4) which are uniformly distributed are arranged on the outer edge of the surface of the inner sleeve, an inner sleeve (2) is fixedly connected on the upper surface of the middle part of the inner sleeve, two rectangular grooves (6) which are symmetrically distributed are arranged on the side wall of the inner sleeve (2), a moving disc (7) is connected on the inner cambered surface of the inner sleeve (2) in a sliding manner, the outer arc surface of the movable disk (7) is provided with two symmetrically distributed slide blocks (8), the sliding block (8) is connected with the inner part of the sliding groove of the inner sleeve (2) in a sliding way, the middle part of the lower surface of the mounting seat (1) is fixedly connected with a motor (10), the outer arc surface of an output shaft of the motor (10) is rotationally connected with the inner arc surface of a round hole in the middle part of the mounting seat (1), the end head of the output shaft of the motor (10) is fixedly connected with a screw rod (11), the lower end of the screw rod (11) is rotatably connected with a round hole in the middle of the bottom plate of the inner sleeve (2) through a bearing, the upper end of the screw rod (11) is in threaded connection with the middle part of the movable disc (7);

clamping mechanism (5): is arranged on the outer edge of the upper surface of the mounting seat (1);

tensioning assembly (9): is arranged on the lower surface of the movable disc (7); the tensioning assembly (9) is arranged corresponding to the rectangular groove (6);

wherein: still include PLC controller (3), PLC controller (3) fixed connection is followed outside the upper surface of mount pad (1), external power source is connected to the input electricity of PLC controller (3), the input of the output electricity connecting machine (10) of PLC controller (3).

2. The piston machining automatic pin hole tensioning tool according to claim 1, characterized in that: press from both sides and embrace mechanism (5) including backup pad (501), electric putter (502) and arc splint (503), backup pad (501) fixed connection is followed outside the upper surface of mount pad (1), electric putter (502) fixed connection is in the medial surface of backup pad (501), the inboard end fixed connection of arc splint (503) extrados middle part and electric putter (502), the output of PLC controller (3) is connected to electric putter's (502) input electricity.

3. The piston machining automatic pin hole tensioning tool according to claim 1, characterized in that: taut subassembly (9) include first connecting rod (91), second connecting rod (92) and draw claw (93), the top of first connecting rod (91) passes through hinged joint with the lower surface that removes dish (7), the bottom of first connecting rod (91) is equipped with draws claw (93), the top of second connecting rod (92) rotates with the outer cambered surface of pivot at first connecting rod (91) middle part to be connected, the bottom of second connecting rod (92) passes through hinged joint with the bottom plate upper surface of inner skleeve (2), first connecting rod (91), second connecting rod (92) and draw claw (93) all correspond the setting with rectangular channel (6).

4. The piston machining automatic pin hole tensioning tool according to claim 3, characterized in that: still include pressure sensor (13), pressure sensor (13) fixed connection draws the lower surface of claw (93), and PLC controller (3)'s input is connected to pressure sensor's (13) output electricity.

5. The piston machining automatic pin hole tensioning tool according to claim 1, characterized in that: still include spacing groove (12), spacing groove (12) set up in the upper surface inboard of mount pad (1), spacing groove (12) correspond the setting with the extrados of inner skleeve (2).

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