Automatic detection device for clearance of automobile air conditioner compressor

Abstract

The utility model relates to an automatic clearance detection device for an automobile air conditioner compressor, which comprises an industrial personal computer, a workbench, a workpiece positioning seat arranged on the surface of the workbench, an upper clearance measuring mechanism, a lower clearance measuring mechanism and a main shaft driving mechanism, the upper clearance measuring mechanism and the main shaft driving mechanism are arranged on the upper side of the table top of the workbench through a vertical frame and located over the workpiece positioning seat. The lower clearance measuring mechanism is arranged on the lower side of the table top of the workbench and located under the workpiece positioning seat. The main shaft driving mechanism drives the main shaft of the detected workpiece to rotate, so that the piston of the detected workpiece reciprocates up and down in the cylinder, and the upper clearance measuring mechanism and the lower clearance measuring mechanism dynamically detect the clearance value. According to the utility model, the compressor clearance can be automatically detected, whether a product is qualified or not can be accurately judged according to whether a clearance value is within a standard range or not, and the detection efficiency and the detection precision are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile air conditioner compressor, and relates to an automobile air conditioner compressor detection device, in particular to an automatic detection device for detecting the clearance of an automobile air conditioner compressor. BACKGROUND

[0002] The piston compressor is composed of a piston, a cylinder and a valve. During operation, the piston reciprocates in the cylinder to draw gas from a low-pressure area into a compression chamber and then compresses the gas to a high-pressure area. This compression method is called volumetric compression, which increases the pressure of the gas by reducing the volume of the space where the piston is located.

[0003] During the assembly of the compressor, the distance between the highest point and the lowest point of the piston during the reciprocating motion and the cylinder joint surface is called the clearance. The clearance value is divided into upper clearance (S 上 ) and lower clearance (S 下 ). The clearance plays an important role in the piston motion process: first, the clearance can reduce the friction between the piston and the cylinder and play a sealing role to prevent gas leakage; second, the clearance also helps to reduce vibration and impact force during mechanical movement, ensuring smooth operation of the compressor. However, too large or too small clearance will adversely affect the performance and efficiency of the compressor: too large clearance will cause increased gas leakage, reducing the compression efficiency of the compressor, and also increasing the damage to the cylinder wall, affecting the service life of the compressor; too small clearance will increase the friction between the piston and the cylinder, making the mechanical movement not smooth, increasing energy consumption, and reducing the efficiency of the compressor.

[0004] The more stable the clearance value, the better the consistency of the compressor refrigeration performance and the better the refrigeration effect. The value is mainly between -0.15mm and 0.29mm. In the prior art, in order to control the clearance value, the usual method is to use a special gauge for detection, manually rotate the compressor main shaft, and manually read the value through a dial gauge. Artificial detection of the clearance value not only has low work efficiency, increases labor costs, and has low precision and poor consistency in artificial detection of the clearance value, making it difficult to ensure product quality control. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a clearance automatic detection device for an automobile air conditioner compressor, which can realize automatic detection of the compressor clearance and accurately determine whether the product is qualified by whether the clearance value is within the standard range, greatly improving the detection efficiency and accuracy and effectively solving the problems existing in the prior art.

[0006] The utility model discloses a technical scheme for realizing the above-mentioned purpose is: a kind of automobile air conditioner compressor clearance automatic detection device, including industrial computer, workbench and the workpiece positioning seat of being set on the workbench tabletop;Still including upper clearance measurement mechanism, lower clearance measurement mechanism and main shaft drive mechanism, the upper clearance measurement mechanism and main shaft drive mechanism are respectively set on the workbench tabletop upside and located the workpiece positioning seat directly above, and the lower clearance measurement mechanism is set on the workbench tabletop downside and located the workpiece positioning seat directly below;

[0007] The upper clearance measurement mechanism includes upper clearance side head, upper clearance measurement block, measurement block connecting plate, linear slide rail assembly, upper lifting plate and upper lifting cylinder, the upper lifting cylinder is vertically arranged and connected with the rear side of stand front side plate, the upper lifting plate is connected with the front side of stand front side plate through linear slide rail assembly, the telescopic rod of upper lifting cylinder is connected with the rear side of upper lifting plate through connecting piece, and the upper lifting plate can be lifted up and down along linear slide rail assembly by upper lifting cylinder;The measurement block connecting plate is horizontally arranged and connected with the front side of upper lifting plate;The upper clearance side head is respectively arranged on the upper clearance measurement block, and the front end of upper clearance side head protrudes from the detection end surface of upper clearance measurement block;The upper clearance measurement block is connected to the lower side of measurement block connecting plate by four connecting rods, and the detection end surface of upper clearance measurement block is downwardly arranged and corresponds to the position of measured workpiece;The control valve of upper clearance side head and upper lifting cylinder is respectively electrically connected with industrial computer;

[0008] The main shaft drive mechanism includes servo motor, motor mounting plate and driving shaft, the motor mounting plate is horizontally arranged and connected with the upper end of upper lifting plate, the servo motor is vertically arranged on the rear side of upper lifting plate and connected with the lower side of motor mounting plate, and the output shaft of servo motor extends to the upper side of motor mounting plate;The position of motor mounting plate near front side, the middle part of upper clearance measurement block and the middle part of measurement block connecting plate are respectively provided with through hole for driving shaft, and bearing is respectively arranged in through hole, the driving shaft passes through the through hole of motor mounting plate, upper clearance measurement block and measurement block connecting plate in sequence and is rotatably fixed above measured workpiece by bearing;The output shaft of servo motor is connected with the upper end of driving shaft through belt transmission structure, and the keyway sleeve matched with the main shaft of measured workpiece is arranged at the lower end of driving shaft, and the servo motor is electrically connected with industrial computer;When the upper lifting plate is lowered to the detection end surface of upper clearance measurement block and the upper end surface of measured workpiece is contacted, the keyway sleeve is matched with the main shaft of measured workpiece, and the main shaft of measured workpiece can be driven to rotate by servo motor and driving shaft;

[0009] The lower residual space measuring mechanism comprises a lower residual space side head, a lower residual space measuring block, a lower lifting plate, a lower lifting cylinder and a cylinder mounting plate, the cylinder mounting plate is connected with the lower side of the workbench table through four guide rods, and the cylinder mounting plate and the workbench table are parallel to each other, bearing mounting holes are arranged at positions corresponding to the four guide rods on the lower lifting plate respectively, linear bearings are positioned in the bearing mounting holes respectively, and the lower lifting plate is positioned between the cylinder mounting plate and the workbench table through cooperation of the linear bearings and the corresponding guide rods, the lower lifting cylinder is vertically arranged at the lower side of the cylinder mounting plate, the telescopic rod of the lower lifting cylinder penetrates through the cylinder mounting plate and is connected with the lower lifting plate, the lower lifting plate can be lifted up and down along the guide rods through the lower lifting cylinder, the lower residual space side head is arranged on the lower residual space measuring block respectively, and the front end of the lower residual space side head protrudes from the detection end surface of the lower residual space measuring block, the lower residual space measuring block is fixed on the lower lifting plate, the detection end surface of the lower residual space measuring block is arranged upwards and corresponds to the position of the measured workpiece, and the control valves of the lower residual space side head and the lower lifting cylinder are electrically connected with the industrial computer respectively.

[0010] Further technical solutions of the utility model are as follows: the number of the upper residual space side heads is consistent with the number of the cylinders of the measured workpiece and corresponds to the positions of the cylinders of the measured workpiece, when the upper lifting plate is lowered to the detection end surface of the upper residual space measuring block and the upper end surface of the measured workpiece is contacted, the upper residual space side heads are respectively located in the corresponding cylinders, the number of the lower residual space side heads is consistent with the number of the cylinders of the measured workpiece and corresponds to the positions of the cylinders of the measured workpiece, when the lower lifting plate is upwardly lifted to the detection end surface of the lower residual space measuring block and the lower end surface of the measured workpiece is contacted, the lower residual space side heads are respectively located in the corresponding cylinders.

[0011] Further technical solutions of the utility model are as follows: the driving shaft is externally provided with a torque sensor for measuring the rotating torque of the driving shaft, and the torque sensor is electrically connected with the industrial computer.

[0012] The utility model discloses an automobile air conditioner compressor residual space automatic detection device has the following beneficial effects due to adopting the above structure:

[0013] 1. The utility model discloses an automobile air conditioner compressor residual space automatic detection device can realize the automatic detection of compressor residual space, and can accurately judge whether the product is qualified through whether the residual space value is in the standard range, and the automation degree is high, and the measurement precision can reach 0.01mm, greatly improves the detection efficiency and detection precision.

[0014] 2. The utility model discloses can also automatically detect the rotating torque of compressor main shaft while detecting the residual space value, so that the compressor quality output is more stable.

[0015] 3. The utility model discloses can realize the residual space measurement of various models of piston compressor, and the measurement data can be stored and traced.

[0016] The utility model discloses an automobile air conditioner compressor clearance automatic detection device further illustrates the utility model discloses an automobile air conditioner compressor clearance automatic detection device with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is one of the structure schematic diagram of the utility model discloses an automobile air conditioner compressor clearance automatic detection device;

[0018] Figure 2 It is the structure schematic diagram of the utility model discloses an automobile air conditioner compressor clearance automatic detection device no.

[0019] Figure 3 It is the structure schematic diagram of the utility model discloses an automobile air conditioner compressor clearance automatic detection device no.

[0020] Figure 4 It is Figure 3 The enlarged view of A in Fig.

[0021] Figure 5 It is the structure schematic diagram of the lower clearance measurement mechanism;

[0022] The number of the drawing label is explained: 1-workbench, 2-stand, 3-main shaft drive mechanism, 31-servo motor, 32-belt drive structure, 33-motor mounting plate, 34-driving shaft, 35-torque sensor, 36-spline cover, 4-upper clearance measurement mechanism, 41-lift cylinder, 42-linear slide rail assembly, 43-lift plate, 44-measurement block connecting plate, 45-connecting rod, 46-upper clearance measurement block, 47-connector, 48-upper clearance side head, 5-measured workpiece, 6-workpiece positioning seat, 7-lower clearance measurement mechanism, 71-lower clearance measurement block, 72-lift plate, 73-linear bearing, 74-guide rod, 75-cylinder mounting plate, 76-lift cylinder, 77-lower clearance side head. DETAILED DESCRIPTION

[0023] As Figures 1 to 5 The utility model discloses an automobile air conditioner compressor clearance automatic detection device, including industrial computer, workbench 1 and the workpiece positioning seat 6 of setting on the workbench 1 mesa, still include upper clearance measurement mechanism 4, lower clearance measurement mechanism 7 and main shaft drive mechanism 3, upper clearance measurement mechanism 4 and main shaft drive mechanism 3 are set respectively through stand 2 on the workbench 1 mesa upside and be located workpiece positioning seat 6 directly above, lower clearance measurement mechanism 7 sets on the workbench 1 mesa downside and be located workpiece positioning seat 6 directly below.

[0024] The upper excess gap measuring mechanism 4 comprises an upper excess gap side head 48, an upper excess gap measuring block 46, a measuring block connecting plate 44, a linear slide rail assembly 42, an upper lifting plate 43 and an upper lifting cylinder 41 which is vertically arranged and connected with the rear side of the front side plate of the stand 2, the upper lifting plate 43 is connected with the front side of the front side plate of the stand 2 through the linear slide rail assembly 42, the telescopic rod of the upper lifting cylinder 41 is connected with the rear side of the upper lifting plate 43 through a connecting piece 47, the upper lifting plate 43 can be driven to ascend and descend along the linear slide rail assembly 42 through the upper lifting cylinder 41, the measuring block connecting plate 44 is horizontally arranged and connected with the front side of the upper lifting plate 43, the upper excess gap side head 48 is arranged on the upper excess gap measuring block 46 respectively, and the front end of the upper excess gap side head 48 protrudes from the detection end surface of the upper excess gap measuring block 46. In the utility model, the number of the upper excess gap side head 48 is consistent with the number of the cylinders of the measured workpiece 5 and corresponds to the position of the cylinders of the measured workpiece 5, the upper excess gap measuring block 46 is connected with the lower side of the measuring block connecting plate 44 through four connecting rods 45, and the detection end surface of the upper excess gap measuring block 46 is arranged downwards and corresponds to the position of the measured workpiece 5, the upper excess gap side head 48 and the control valve of the upper lifting cylinder 41 are electrically connected with the industrial computer respectively, when the upper lifting plate 43 descends to the detection end surface of the upper excess gap measuring block 46 and the upper end surface of the measured workpiece 5 is contacted, the upper excess gap side head 48 is located in the corresponding cylinder respectively.

[0025] The main shaft driving mechanism 3 comprises a servo motor 31, a motor mounting plate 33 and a driving shaft 34, the motor mounting plate 33 is horizontally arranged and connected with the upper end of the upper lifting plate 43, the servo motor 31 is vertically arranged on the rear side of the upper lifting plate 43 and connected with the lower side of the motor mounting plate 33, and the output shaft of the servo motor 31 extends to the upper side of the motor mounting plate 33, the front side of the motor mounting plate 33, the middle part of the upper excess gap measuring block 46 and the middle part of the measuring block connecting plate 44 are respectively provided with through holes for the driving shaft 34 to pass through, bearings are respectively arranged in the through holes, the driving shaft 34 sequentially passes through the through holes of the motor mounting plate 33, the upper excess gap measuring block 46 and the measuring block connecting plate 44 and is rotatably fixed above the measured workpiece 5 through the bearings, the output shaft of the servo motor 31 is connected with the upper end of the driving shaft 34 through a belt transmission structure 32, and the lower end of the driving shaft 34 is provided with a spline sleeve 36 matched with the main shaft of the measured workpiece 5, in addition, the outer side of the driving shaft 34 is provided with a torque sensor 35 for measuring the rotating torque of the driving shaft 34, and the servo motor 31 and the torque sensor 35 are electrically connected with the industrial computer respectively. When the upper lifting plate 43 descends to the detection end surface of the upper excess gap measuring block 46 and the upper end surface of the measured workpiece 5 is contacted, the spline sleeve 36 is matched with the main shaft of the measured workpiece 5, and the main shaft of the measured workpiece 5 can be driven to rotate through the servo motor 31 and the driving shaft 34.

[0026] As Figure 5As shown, the lower clearance measuring mechanism 7 of the utility model includes lower clearance side head 77, lower clearance measuring block 71, lower lifting plate 72, lower lifting cylinder 76 and cylinder mounting plate 75, the cylinder mounting plate 75 is connected with the workbench 1 table lower side through four guide rods 74, and the cylinder mounting plate 75 and the workbench 1 table are mutually parallel;The lower lifting plate 72 is respectively equipped with bearing mounting hole in the position corresponding to four guide rods 74, and the bearing mounting hole is respectively positioned with linear bearing 73, and the lower lifting plate 72 is positioned between the cylinder mounting plate 75 and the workbench 1 table by the cooperation of linear bearing 73 and corresponding guide rod 74;The lower lifting cylinder 76 is vertically arranged in the lower side of cylinder mounting plate 75, and the telescopic rod of lower lifting cylinder 76 passes through cylinder mounting plate 75 and is connected with lower lifting plate 72, and the lower lifting plate 72 can be driven to lift along guide rod 74 by lower lifting cylinder 76;The lower clearance side head 77 is respectively arranged on the lower clearance measuring block 71, and the front end of lower clearance side head 77 protrudes from the detection end surface of lower clearance measuring block 71;In the utility model, the number of lower clearance side head 77 is consistent with the cylinder number of the measured workpiece 5 and corresponds to the cylinder position of the measured workpiece 5.The lower clearance measuring block 71 is fixed on the lower lifting plate 72, and the detection end surface of lower clearance measuring block 71 is arranged upwards and corresponds to the position of the measured workpiece 5;The control valve of lower clearance side head 77 and lower lifting cylinder 76 is respectively electrically connected with industrial computer;When the lower lifting plate 72 is lifted upwards to the detection end surface of lower clearance measuring block 71 and the lower end surface of the measured workpiece 5 is contacted, the lower clearance side head 77 is respectively located in the corresponding cylinder.

[0027] The working principle of the automobile air conditioner compressor clearance automatic detection device is as follows: the measured workpiece 5 is positioned on the workpiece positioning seat 6, the upper clearance measurement mechanism 4 is lowered under the control of the industrial computer, the main shaft driving mechanism 3 is lowered accordingly, when the upper lifting plate 43 is lowered to the detection end surface of the upper clearance measurement block 46 and the upper end surface of the measured workpiece 5 is in contact, the upper clearance side head 48 is located in the corresponding cylinder respectively, and the spline sleeve 36 is matched with the main shaft of the measured workpiece 5; the industrial computer controls the lower clearance measurement mechanism 7 to lift at the same time, when the lower lifting plate 72 is lifted upward to the detection end surface of the lower clearance measurement block 71 and the lower end surface of the measured workpiece 5 is in contact, the lower clearance side head 77 is located in the corresponding cylinder respectively; then the industrial computer controls the servo motor 31 to rotate, the main shaft of the measured workpiece 5 is rotated through the servo motor 31 and the driving shaft 34, so that the piston of the measured workpiece 5 reciprocates up and down, the piston reciprocates up and down to the highest point and the lowest point respectively, and the upper clearance measurement head 3 and the lower clearance side head 77 are pressed, the displacement data generated by the upper clearance measurement head 3 and the lower clearance side head 77 is fed back to the industrial computer, the maximum value of the upper clearance and the lower clearance in the dynamic detection process is set through program editing, and the torque sensor 35 feeds back the current main shaft rotation torque of the measured workpiece 5 to the industrial computer, the industrial computer obtains the upper clearance value, the lower clearance value and the main shaft rotation torque in each cylinder of the measured workpiece 5, and displays on the touch screen, and uploads to the MES system storage as a traceability, the upper clearance value and the lower clearance value meet-0.15mm~0.29mm and torque <0.4N.m, and the two conditions cannot be met at the same time, and the unqualified product needs to be reworked and reselected.

[0028] The above embodiments are only preferred embodiments of the utility model, and the structure of the utility model is not limited to the form listed in the above embodiments, and any modification, equivalent replacement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An automobile air conditioner compressor clearance automatic detection device, comprising an industrial computer, a workbench (1) and a workpiece positioning seat (6) arranged on the tabletop of the workbench (1); characterized in that: The upper gap measuring mechanism (4) and the main shaft driving mechanism (3) are arranged on the upper side of the table (1) through the stand (2) and above the workpiece positioning seat (6), and the lower gap measuring mechanism (7) is arranged on the lower side of the table (1) and below the workpiece positioning seat (6); The upper gap measuring mechanism (4) comprises upper gap side heads (48), an upper gap measuring block (46), a measuring block connecting plate (44), a linear slide rail assembly (42), an upper lifting plate (43) and an upper lifting cylinder (41). The upper lifting cylinder (41) is vertically arranged and connected with the rear side of the front side plate of the stand (2). The upper lifting plate (43) is connected with the front side of the front side plate of the stand (2) through the linear slide rail assembly (42). The telescopic rod of the upper lifting cylinder (41) is connected with the rear side of the upper lifting plate (43) through a connecting piece (47). The upper lifting plate (43) can be driven to rise and fall along the linear slide rail assembly (42) through the upper lifting cylinder (41). The measuring block connecting plate (44) is horizontally arranged and connected with the front side of the upper lifting plate (43). The upper gap side heads (48) are arranged on the upper gap measuring block (46), and the front ends of the upper gap side heads (48) protrude from the detection end face of the upper gap measuring block (46). The upper gap measuring block (46) is connected with the lower side of the measuring block connecting plate (44) through four connecting rods (45), and the detection end face of the upper gap measuring block (46) is arranged downward and corresponds to the position of the measured workpiece (5). The upper gap side heads (48) and the control valve of the upper lifting cylinder (41) are electrically connected with the industrial computer. The main shaft driving mechanism (3) comprises a servo motor (31), a motor mounting plate (33) and a driving shaft (34), the motor mounting plate (33) is horizontally arranged and connected with the upper end of the upper lifting plate (43), the servo motor (31) is vertically arranged at the rear side of the upper lifting plate (43) and connected with the lower side of the motor mounting plate (33), and the output shaft of the servo motor (31) extends to the upper side of the motor mounting plate (33); the front side of the motor mounting plate (33), the middle part of the upper clearance measuring block (46) and the middle part of the measuring block connecting plate (44) are respectively provided with a through hole for the driving shaft (34) to pass through, bearings are respectively arranged in the through holes, the driving shaft (34) passes through the through holes of the motor mounting plate (33), the upper clearance measuring block (46) and the measuring block connecting plate (44) in sequence and is rotatably fixed above the measured workpiece (5) through the bearings; the output shaft of the servo motor (31) is connected with the upper end of the driving shaft (34) through a belt transmission structure (32), the lower end of the driving shaft (34) is provided with a spline sleeve (36) matched with the main shaft of the measured workpiece (5), and the servo motor (31) is electrically connected with the industrial computer; when the upper lifting plate (43) is lowered to the position that the detection end surface of the upper clearance measuring block (46) is in contact with the upper end surface of the measured workpiece (5), the spline sleeve (36) is matched with the main shaft of the measured workpiece (5), and the main shaft of the measured workpiece (5) can be driven to rotate through the servo motor (31) and the driving shaft (34); The lower clearance measuring mechanism (7) comprises a lower clearance side head (77), a lower clearance measuring block (71), a lower lifting plate (72), a lower lifting cylinder (76) and a cylinder mounting plate (75), the cylinder mounting plate (75) is connected with the lower side of the table top of the workbench (1) through four guide rods (74), and the cylinder mounting plate (75) and the table top of the workbench (1) are parallel to each other; the lower lifting plate (72) is provided with bearing mounting holes at positions corresponding to the four guide rods (74), linear bearings (73) are respectively positioned in the bearing mounting holes, and the lower lifting plate (72) is positioned between the cylinder mounting plate (75) and the table top of the workbench (1) through cooperation of the linear bearings (73) and the corresponding guide rods (74); the lower lifting cylinder (76) is vertically arranged at the lower side of the cylinder mounting plate (75), the telescopic rod of the lower lifting cylinder (76) passes through the cylinder mounting plate (75) and is connected with the lower lifting plate (72), and the lower lifting plate (72) can be driven to ascend and descend along the guide rods (74) through the lower lifting cylinder (76); the lower clearance side head (77) is arranged on the lower clearance measuring block (71), and the front end of the lower clearance side head (77) protrudes from the detection end surface of the lower clearance measuring block (71); the lower clearance measuring block (71) is fixed on the lower lifting plate (72), and the detection end surface of the lower clearance measuring block (71) is arranged upward and corresponds to the position of the measured workpiece (5); the control valves of the lower clearance side head (77) and the lower lifting cylinder (76) are electrically connected with the industrial computer.

2. The device for automatically detecting the clearance of an automobile air conditioner compressor according to claim 1, characterized in that: The number of the upper clearance side heads (48) is consistent with the cylinder number of the measured workpiece (5) and corresponds to the cylinder position of the measured workpiece (5), and when the upper lifting plate (43) is lowered to the contact between the detection end surface of the upper clearance measuring block (46) and the upper end surface of the measured workpiece (5), the upper clearance side heads (48) are respectively located in the corresponding cylinders; the number of the lower clearance side heads (77) is consistent with the cylinder number of the measured workpiece (5) and corresponds to the cylinder position of the measured workpiece (5); when the lower lifting plate (72) is upwardly lifted to the contact between the detection end surface of the lower clearance measuring block (71) and the lower end surface of the measured workpiece (5), the lower clearance side heads (77) are respectively located in the corresponding cylinders.

3. The device according to claim 1, characterized in that: The driving shaft (34) is provided with a torque sensor (35) outside for measuring the rotating torque of the driving shaft (34), and the torque sensor (35) is electrically connected with the industrial computer.

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