CN211991887U - A piston machining self-centering structure - Google Patents

Abstract

The utility model discloses a self-centering structure for piston machining, which comprises a working platform, a longitudinal centering device, a clamping and fixing device and a lateral centering device. Bottom support plates are symmetrically arranged on the left and right sides of the bottom surface of the working platform. , the installation holes are evenly arranged on the bottom plate body of the corresponding bottom support plate, the longitudinal centering device is arranged on the right side of the upper end of the working platform, the clamping and fixing device is arranged at the center position of the upper end of the working platform, and the The lateral centering device is arranged on the upper left end of the working platform, wherein: it also includes a PLC controller, the PLC controller is arranged on the front side wall of the working platform, and the input end of the PLC controller is electrically connected to an external power supply. Self-centering structure, ingenious and reasonable structural design, can clamp and fix the piston, and can efficiently locate the horizontal and vertical positions, so as to complete the self-centering operation accurately and quickly, reduce the work burden of personnel, and ensure the processing quality of the piston.

Description

A piston machining self-centering structure

technical field

The utility model relates to the technical field of piston processing, in particular to a self-centering structure for piston processing.

Background technique

With the industrialization of modern society, automobiles have become an indispensable means of transportation in life. The engine is the heart of the automobile, and the piston is one of the most important components of the engine. Piston centering is an important process to ensure the quality of the piston. The equipment is a necessary equipment for piston processing, but the traditional piston centering equipment has many shortcomings, the structural design is not ingenious and reasonable, the piston cannot be clamped and fixed, and the occurrence of piston offset during the centering process cannot be avoided, so it cannot be guaranteed. The quality of the piston cannot be efficiently positioned in the horizontal and vertical positions, so that the self-centering operation cannot be completed accurately and quickly, which increases the workload of the personnel, and cannot guarantee the work efficiency and piston quality. The realization of the heart structure is imperative.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects and provide a piston machining self-centering structure, which can clamp and fix the piston, complete the self-centering operation accurately and quickly, reduce the work burden of personnel, and ensure the piston It can effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a self-centering structure for piston machining, including a working platform, a longitudinal centering device, a clamping fixture and a lateral centering device;

Working platform: the bottom surface of the working platform is symmetrically provided with bottom support plates on the left and right sides, and the installation holes are evenly arranged on the bottom plate body of the corresponding bottom support plate;

Longitudinal centering device: the longitudinal centering device is arranged on the right side of the upper end of the work platform;

Clamping and fixing device: the clamping and fixing device is arranged at the center position of the upper end of the work platform;

Horizontal centering device: the horizontal centering device is arranged on the upper left end of the work platform;

Among them: it also includes a PLC controller, the PLC controller is arranged on the front side wall of the work platform, and the input end of the PLC controller is electrically connected to an external power supply. The structure design is ingenious and reasonable, and the piston can be clamped and fixed to avoid the centering process. The offset of the middle piston affects the centering of the piston, which can efficiently locate the horizontal and vertical positions, so as to complete the self-centering operation accurately and quickly, reduce the work burden of personnel, and ensure the processing quality of the piston.

Further, the longitudinal centering device includes a motor, a first adjusting screw, an adjusting slider, a longitudinal distance sensor and a first bar-shaped chute, the motor is arranged on the rear side wall of the work platform, and the output shaft of the motor is It passes through the through hole of the rear wall of the work platform and is fixedly connected with the upper end of the first adjusting screw through the coupling. The bearing is connected with the left and right inner walls of the first bar-shaped chute in rotation, the lower end of the adjusting slider is threadedly connected with the first adjusting screw rod, and the sliders on both sides of the lower end of the adjusting slider are connected with the chute on the side wall of the first bar-shaped chute. Sliding connection, the longitudinal distance sensor is arranged on the left side of the adjustment slider, the input end of the motor is electrically connected to the output end of the PLC controller, and the output end of the longitudinal distance sensor is electrically connected to the input end of the PLC controller to realize longitudinal positioning and reduce the The workload of the personnel ensures the processing quality of the piston.

Further, the clamping and fixing device includes a clamping and fixing base plate, a clamping and fixing sliding block, a second bar-shaped chute, a piston placing table, a second adjusting screw rod and an adjusting knob, and the clamping and fixing base plate is arranged in a position including: At the center of the upper surface of the working platform, the piston placement platform is set at the center of the upper surface of the clamping and fixed base plate, the second strip chute is evenly distributed on the outside of the piston placement platform, and the two ends of the second adjusting screw are connected to each other through bearings. The left and right inner walls of the second bar-shaped chute are rotatably connected, the two sides of the lower end of the clamping and fixing slider are slidably connected with the side wall chute of the second bar-shaped chute, and the outer end of the second adjusting screw extends to the clamping and fixing An adjustment knob is arranged on the outer side of the bottom plate and at the end to fix the piston and prevent the position of the piston from being offset.

Further, the lateral centering device includes a lateral support rod, an electric telescopic column and a lateral distance sensor, the lateral support rod is arranged at the rear end of the left side of the work platform, and the electric telescopic column is arranged on the right side of the lateral support rod. On the upper side, the lateral distance sensor is arranged on the right side of the electric telescopic column, the input end of the electric telescopic column is electrically connected to the output end of the PLC controller, and the output end of the lateral distance sensor is electrically connected to the input end of the PLC controller to realize lateral positioning , reduce the burden on staff and improve work efficiency.

Further, it also includes a toolbox and a partition, the toolbox is arranged on the front side of the bottom of the work platform, and the partition is arranged in the middle of the toolbox, so that the tools can be classified and placed, and the tools can be used and reset quickly and accurately. Reduce staff workload and improve work efficiency.

Compared with the prior art, the beneficial effects of the present utility model are: the self-centering structure of the piston has the following advantages:

1. When centering, place the piston in the piston placing table, and turn the adjusting knob. Since the two ends of the first adjusting screw are connected to the left and right inner walls of the first bar-shaped chute through the bearings, clamp the fixed slider. The two sides of the lower end are slidably connected with the sidewall chute of the first bar-shaped chute to realize the rotation of the first adjusting screw, and then the clamping and fixing sliders move toward the piston placing table, and the four clamping and fixing sliders approach from four sides. And moderately clamp the piston between them, and fix the piston in it, so as to avoid the piston offset affecting the centering of the piston during the centering process, to ensure the quality of centering and subsequent processing, and to reduce the workload of personnel.

2. Through the control of the PLC controller, the motor runs and the output shaft rotates. Since the two ends of the second adjusting screw are rotatably connected to the left and right inner walls of the second bar-shaped chute through the bearings, the lower end of the adjusting slider is connected to the second adjusting screw. The rod is screwed, and the sliders on both sides of the lower end of the adjustment slider are slidably connected with the chute on the side wall of the second bar-shaped chute to realize the longitudinal movement of the adjustment slider. The longitudinal distance sensor moves longitudinally with the adjustment slider and is controlled by PLC. The control of the device is set on the upper right side of the horizontal support rod to telescopically move the electric telescopic column. The lateral distance sensor moves laterally with the electric telescopic column. During the movement, the distance information measured by the longitudinal distance sensor and the lateral distance sensor is presented in time. Integrate and analyze the PLC controller, there is a minimum vertical and horizontal distance during reciprocating measurement, and then determine the piston centering coordinates and distance through the induction of the longitudinal distance sensor and the horizontal distance sensor to the closest distance points in the two directions of the piston placed on the piston placing table. At the minimum time, the PLC controller controls the motor and the electric telescopic column to stop running, and then controls the external machine to carry out the processing of the piston according to the vertical and horizontal position information of the piston centering, which can accurately and quickly complete the self-centering operation, reducing the labor of personnel. Work burden, ingenious and reasonable structural design, ensure the processing quality of the piston.

Description of drawings

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

Figure 2 is a schematic diagram of the internal structure of the toolbox of the present invention.

In the figure: 1 work pallet, 2 longitudinal centering device, 21 motor, 22 first adjusting screw, 23 adjusting slider, 24 longitudinal distance sensor, 25 first bar-shaped chute, 3 clamping fixture, 31 clamp Holding fixed base plate, 32 clamping fixed slider, 33 second bar chute, 34 piston placing table, 35 second adjusting screw, 36 adjusting knob, 4 lateral centering device, 41 lateral support rod, 42 electric telescopic Columns, 43 lateral distance sensors, 5 tool boxes, 6 PLC controllers, 7 bottom support plates, 8 mounting holes, 9 partitions.

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.

1-2, the present utility model provides a technical solution: a self-centering structure for piston machining, comprising a work platform 1, a longitudinal centering device 2, a clamping and fixing device 3 and a lateral centering device 4;

Work pallet 1: Work pallet 1 provides bottom support and installation site. Bottom support plates 7 are symmetrically arranged on the left and right sides of the bottom surface of work pallet 1, and installation holes 8 are evenly arranged on the bottom body of the corresponding bottom support plate 7. The evenly distributed mounting holes 8 on the bottom plate body of the bottom support plate 7 are connected to the installation parts by bolts, so as to realize the installation and fixation of the bottom support plate 7, the work platform 1 and the upper structure, so as to avoid the work platform 1 from being damaged during the operation. Stability causes inaccurate piston centering.

Longitudinal centering device 2: The longitudinal centering device 2 is arranged on the right side of the upper end of the work platform 1. The longitudinal centering device 2 includes a motor 21, a first adjusting screw 22, an adjusting slider 23, a longitudinal distance sensor 24 and a first The bar-shaped chute 25, the motor 21 is arranged on the rear side wall of the working platform 1, the output shaft of the motor 21 passes through the through hole of the rear wall of the working platform 1 and is fixed with the upper end of the first adjusting screw 22 through the coupling The first bar-shaped chute 25 is arranged on the right side of the upper end of the work platform 1, and the two ends of the first adjusting screw 22 are rotatably connected with the left and right inner walls of the first bar-shaped chute 25 through bearings. The lower end is threadedly connected with the first adjustment screw 22 , the sliders on both sides of the lower end of the adjustment slider 23 are slidably connected with the chute on the side wall of the first bar-shaped chute 25 , and the longitudinal distance sensor 24 is arranged on the left side of the adjustment slider 23 On the other hand, through the control of the PLC controller 6, the motor 21 runs, and the output shaft rotates. Since the two ends of the first adjusting screw 22 are rotatably connected to the left and right inner walls of the first bar-shaped chute 25 through bearings, the lower end of the adjusting slider 23 is adjusted. It is threadedly connected with the first adjustment screw 22, and the sliders on both sides of the lower end of the adjustment slider 23 are slidably connected with the chute on the side wall of the first bar-shaped chute 25 to realize the longitudinal movement of the adjustment slider 23, and the longitudinal distance sensor 24 follows the As the adjustment slider 23 moves longitudinally, during the moving process, the distance information measured by the longitudinal distance sensor 24 is presented to the PLC controller 6 for integrated analysis in time, and there is a minimum longitudinal distance during the reciprocating measurement, and then the longitudinal distance sensor 24 is placed on the piston. The induction of the closest point of the piston of the placing table 34 determines the longitudinal centering coordinates of the piston. When the distance is the smallest, the PLC controller 6 controls the motor 21 to stop running, and then controls the external machine to carry out the piston according to the longitudinal position information of the piston centering through the PLC controller 6. It can complete the self-centering operation accurately and quickly, reduce the workload of personnel, and ensure the processing quality of the piston.

Clamping and fixing device 3: The clamping and fixing device 3 is arranged at the center of the upper end of the work platform 1. The clamping and fixing device 3 includes a clamping and fixing bottom plate 31, a clamping and fixing slider 32, a second bar-shaped chute 33, a piston The placing table 34, the second adjusting screw 35 and the adjusting knob 36, the clamping and fixing base plate 31 is arranged at the center of the upper surface including the working plate table 1, and the piston placing table 34 is arranged at the center of the upper surface of the clamping and fixing base plate 31, The second bar-shaped chute 33 is evenly distributed on the outer side of the piston placing table 34 , the two ends of the second adjusting screw 35 are rotatably connected with the left and right inner walls of the second bar-shaped chute 33 through bearings, and the lower end of the fixed slider 32 is clamped. The two sides are slidably connected to the sidewall chute of the second bar-shaped chute 33. The outer end of the second adjusting screw 35 extends to the outer side of the clamping and fixing bottom plate 31 and is provided with an adjustment knob 36 at the end for centering. When the piston is moved, the piston is placed in the piston placing table 34, and the adjusting knob 36 is rotated. Since the two ends of the second adjusting screw 35 are rotatably connected with the left and right inner walls of the second bar-shaped chute 33 through bearings, the sliding block 32 is clamped and fixed. The two sides of the lower end of the lower end are slidably connected to the sidewall chute of the second bar-shaped chute 33 to realize the rotation of the second adjusting screw 35, and then the clamping and fixing slider 32 moves towards the piston placing table 34, and the four clamping and fixing sliders The block 32 approaches from the four sides and moderately clamps the piston between them, and clamps and fixes the piston in it, so as to avoid the piston offset affecting the centering of the piston during the centering process, to ensure the centering and subsequent processing quality, and to reduce the workload of personnel. .

Lateral centering device 4: The lateral centering device 4 is arranged on the upper left end of the work board 1. The lateral centering device 4 includes a lateral support rod 41, an electric telescopic column 42 and a lateral distance sensor 43, and the lateral support rod 41 is set on the work board. The rear end of the left side of the table 1, the electric telescopic column 42 is arranged on the upper end of the right side of the lateral support rod 41, and the lateral distance sensor 43 is arranged on the right side of the electric telescopic column 42, and is set at the right side of the electric telescopic column 42 through the regulation of the PLC controller 6. The electric telescopic column 42 on the upper right side of the lateral support rod 41 telescopically moves, and the lateral distance sensor 43 moves laterally with the electric telescopic column 42, and the distance information measured by the lateral distance sensor 43 is timely presented to the PLC controller 6 for integrated analysis and reciprocating measurement. Sometimes there is a minimum horizontal distance, and then the horizontal centering coordinates of the piston are determined by the induction of the horizontal distance sensor 43 to the closest distance point in the horizontal direction of the piston placed on the piston placing table 34. When the distance is the smallest, the electric telescopic column 42 of the PLC controller 6 stops running, Furthermore, the PLC controller 6 is used to control the machining operation of the piston by the external machine according to the lateral position information of the centering of the piston, so that the self-centering operation can be completed accurately and quickly, the workload of the personnel is reduced, and the machining quality of the piston is ensured.

Wherein: also includes a PLC controller 6, the PLC controller 6 is arranged on the front side wall of the work platform 1, the input end of the PLC controller 6 is electrically connected to an external power supply, and the input ends of the motor 21 and the electric telescopic column 42 are electrically connected to the PLC The output end of the controller 6 , the output ends of the longitudinal distance sensor 24 and the lateral distance sensor 43 are all electrically connected to the input end of the PLC controller 6 .

Wherein: also include a toolbox 5 and a partition 9, the toolbox 5 is arranged on the bottom front side of the work platform 1, and the partition 9 is arranged in the middle of the toolbox 5, after the tool is used, it can be placed inside the toolbox 5 , the partition plate 9 can make the tools classified and placed, ensure that the tools can be taken out quickly and accurately, reduce the workload of the staff, improve the work efficiency, and the tools can be quickly reset after use.

When in use: connect the evenly distributed mounting holes 8 on the bottom plate body of the bottom support plate 7 with the installation parts through bolts to realize the installation and fixation of the bottom support plate 7, the work platform 1 and the upper structure, and avoid working during the operation. The instability of the pallet 1 causes the inaccurate centering of the piston. When centering, place the piston in the piston placing table 34, and rotate the adjusting knob 36. Because the two ends of the second adjusting screw 35 slide through the bearing and the second bar. The left and right inner walls of the slot 33 are rotatably connected, and both sides of the lower end of the clamping and fixing slider 32 are slidably connected to the side wall chute of the second bar-shaped chute 33, so as to realize the rotation of the second adjusting screw 35, and then clamp the fixing slider 32. Move to the direction of the piston placing table 34, the four clamping and fixing sliders 32 approach from four sides and moderately clamp the piston between them, and clamp and fix the piston among them, so as to avoid the piston offset affecting the centering of the piston during the centering process, To ensure the quality of centering and subsequent processing, and reduce the workload of personnel, through the control of the PLC controller 6, the motor 21 runs and the output shaft rotates. Since the two ends of the first adjusting screw 22 pass through the bearing and the first bar-shaped chute The left and right inner walls of 25 are rotatably connected, the lower end of the adjustment slider 23 is threadedly connected with the first adjustment screw 22, and the sliders on both sides of the lower end of the adjustment slider 23 are slidably connected with the chute on the side wall of the first bar-shaped chute 25 to realize The longitudinal movement of the adjustment slider 23, the longitudinal distance sensor 24 moves longitudinally with the adjustment slider 23, and through the control of the PLC controller 6, the electric telescopic column 42 installed on the upper right side of the lateral support rod 41 telescopically moves, and the lateral distance sensor 43 With the horizontal telescopic movement of the electric telescopic column 42, in the moving process, the distance information measured by the longitudinal distance sensor 24 and the lateral distance sensor 43 is presented to the PLC controller 6 for integrated analysis in time, and there is a minimum vertical and horizontal distance during the reciprocating measurement, Then, the centering coordinates of the piston are determined by the induction of the closest distance points in the two directions of the piston placed on the piston placing table 34 by the longitudinal distance sensor 24 and the lateral distance sensor 43. When the distance is the smallest, the PLC controller 6 controls the motor 21 and the electric telescopic column 42. Stop the operation, and then control the external machine to carry out the processing of the piston through the PLC controller 6 according to the vertical and horizontal position information of the centering of the piston, which can accurately and quickly complete the self-centering operation, reduce the workload of personnel, and ensure the processing quality of the piston. After the tool is used, it can be placed inside the toolbox 5, and the partition 9 can make the tools classified and placed, ensuring that the tool can be taken out quickly and accurately when using it, reducing the workload of the staff and improving the work efficiency, and the tool can be quickly reset after use. .

It is worth noting that the specific model of the PLC controller 6 disclosed in this embodiment is Siemens S7-200, the vertical distance sensor 24 and the horizontal distance sensor can be selected from the Sharp GP2D12 infrared distance sensor, and the electric telescopic column 42 can be selected from Wuxi. The model of City Mingyao Electro-hydraulic Push Rod Factory is WDTP type electric push rod, the motor 21 can be selected from Dongguan Moku Electromechanical Co., Ltd. model is 57HD98001-01 stepping motor, the PLC controller 6 controls the motor 21 and the electric telescopic column 42 work using the current There are methods commonly used in technology.

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. A self-centering structure for processing a piston, characterized in that: it comprises a working platform (1), a longitudinal centering device (2), a clamping and fixing device (3) and a transverse centering device (4); The working platform (1): the bottom surface of the working platform (1) is symmetrically provided with bottom support plates (7) on the left and right sides, and the installation holes (8) are evenly arranged on the bottom plate body of the corresponding bottom support plate (7). ; Longitudinal centering device (2): the longitudinal centering device (2) is arranged on the right side of the upper end of the working platform (1); Clamping and fixing device (3): the clamping and fixing device (3) is arranged at the center position of the upper end of the working platform (1); Lateral centering device (4): the lateral centering device (4) is arranged on the upper left end of the work pallet (1); Wherein: it also includes a PLC controller (6), the PLC controller (6) is arranged on the front side wall of the work platform (1), and the input end of the PLC controller (6) is electrically connected to an external power supply. 2. A self-centering structure for piston machining according to claim 1, characterized in that: the longitudinal centering device (2) comprises a motor (21), a first adjusting screw (22), an adjusting slider ( 23), a longitudinal distance sensor (24) and a first bar-shaped chute (25), the motor (21) is arranged on the rear side wall of the work board (1), and the output shaft of the motor (21) passes through the work board The rear wall of the table (1) has a through hole and is fixedly connected to the upper end of the first adjusting screw (22) through a coupling, and the first bar-shaped chute (25) is arranged on the right side of the upper end of the working plate table (1). Both ends of the first adjusting screw (22) are rotatably connected to the left and right inner walls of the first bar-shaped chute (25) through bearings, and the lower end of the adjusting slider (23) is threadedly connected with the first adjusting screw (22) to adjust The sliding blocks on both sides of the lower end of the sliding block (23) are slidably connected with the sliding grooves on the side walls of the first bar-shaped sliding groove (25), and the longitudinal distance sensor (24) is arranged on the left side of the adjusting sliding block (23). The input end of 21) is electrically connected to the output end of the PLC controller (6), and the output end of the longitudinal distance sensor (24) is electrically connected to the input end of the PLC controller (6). 3. A self-centering structure for piston machining according to claim 1, characterized in that: the clamping and fixing device (3) comprises a clamping and fixing base plate (31), a clamping and fixing sliding block (32), a first Two bar-shaped chutes (33), a piston placing table (34), a second adjusting screw (35) and an adjusting knob (36), the clamping and fixing base plate (31) is arranged on the base plate (31) including the work plate table (1). At the center of the upper surface, the piston placing table (34) is arranged at the center of the upper surface of the clamping and fixing base plate (31), and the second bar-shaped chute (33) is evenly distributed on the outside of the piston placing table (34). Both ends of the screw rod (35) are rotatably connected with the left and right inner walls of the second bar-shaped chute (33) through bearings, and the two sides of the lower end of the fixed slider (32) are clamped and the sides of the second bar-shaped chute (33) are clamped. The wall sliding grooves are slidably connected, and the outer end of the second adjusting screw rod (35) extends to the outer side of the clamping and fixing bottom plate (31), and an adjustment knob (36) is provided at the end. 4. A piston machining self-centering structure according to claim 1, characterized in that: the lateral centering device (4) comprises a lateral support rod (41), an electric telescopic column (42) and a lateral distance sensor ( 43), the lateral support rod (41) is arranged at the rear end of the left side of the work platform (1), the electric telescopic column (42) is arranged at the upper end of the right side of the lateral support rod (41), and the lateral distance sensor ( 43) is arranged on the right side of the electric telescopic column (42), the input end of the electric telescopic column (42) is electrically connected to the output end of the PLC controller (6), and the output end of the lateral distance sensor (43) is connected to the PLC controller ( 6) The input terminal is electrically connected. 5. A self-centering structure for piston machining according to claim 1, characterized in that: it further comprises a tool box (5) and a partition plate (9), the tool box (5) being arranged on the working platform (1) ), the partition plate (9) is arranged in the middle of the tool box (5).

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