CN208902087U - A kind of automatic piston clearance detection machine - Google Patents

Abstract

The utility model discloses a kind of automatic piston clearance detection machines, including outer framework component, main axle rotation device, workpiece pressuring clamping device, upper tooling, upper tooling placement platform, lower tooling placement platform, lower tooling, three color tower lamps, man-machine interface, electronic box, pneumatic control components and displacement sensor component, the main axle rotation device is by the first O-ring, second O-ring, stretch shaft in side, bearing block, carrier base, square boom, hexagonal set, buffer spring, Coupling Shaft, axle sleeve, optical axis, resilient key, ball bearing, locking nut, servo motor, planet-gear speed reducer and shaft coupling composition；The automatic piston clearance detection machine, it is measured using machine, measurement accuracy height, is not easy to judge by accident high production efficiency, only need to switch tooling achieves that mostly several compression machine testings simultaneously, docking for gas circuit is completed while realizing with gas path joint by lower tooling gas circuit butt hole and change tooling, improve tooling with changing efficiency, reduce the technological preparation time.

Description

A kind of automatic piston clearance detection machine

Technical field

The utility model relates to variable compressor assembly equipment technical field, specially a kind of automatic piston clearance detection Machine.

Background technique

The stand off of compressor is an important parameter for influencing compressor performance, due to the processing of compressor inner body Precision deficiency and assembly cumulative errors, cause the parameter not can guarantee, the lifting force piece by matching different-thickness are needed to protect Card, traditional approach are that artificial judgement apolegamy is individually measured with simple inpecting tool, and measurement accuracy is poor, production efficiency is low, is easy erroneous judgement, nothing Method meets current production requirements.

Summary of the invention

The purpose of this utility model is to provide a kind of automatic piston clearance detection machines, to solve to mention in above-mentioned background technique Out the problem of.

In order to solve the above-mentioned technical problem, the utility model provides the following technical solutions: a kind of automatic piston clearance detection Machine, including outer framework component, main axle rotation device, workpiece pressuring clamping device, upper tooling, upper tooling placement platform, lower tooling are placed Platform, lower tooling, three color tower lamps, man-machine interface, electronic box, pneumatic control components and displacement sensor component, the outer framework group One lateral roof of part, which is bolted, is equipped with man-machine interface, and three color tower lamps are provided with above the man-machine interface, described Electronic box is mounted by means of bolts on another side bottom of outer framework component, and the inner upper of the outer framework component is embedded in vertically There is main axle rotation device；

The main axle rotation device by the first O-ring, the second O-ring, side stretch shaft, bearing block, carrier base, square boom, Hexagonal set, buffer spring, Coupling Shaft, axle sleeve, optical axis, resilient key, ball bearing, locking nut, servo motor, planetary gear slow down Machine and shaft coupling composition, the output shaft of the servo motor are connect with planet-gear speed reducer, the output of the planet-gear speed reducer Axis is fixedly connected through carrier base side with Coupling Shaft by shaft coupling, and shaft coupling is arranged in the inside of carrier base, and described turn Shaft is stretched by the other end side of being nested and fixed of spindle, and the rolling of bearing block is nested and fixed by outside for the outside that the side stretches shaft Pearl bearing is connect with carrier base, and the other end outside that the side stretches shaft is socketed with axle sleeve, and axle sleeve passes through locking nut and side It stretches shaft to be fixedly connected, the side stretches the end insertion side's of being equipped with boom of shaft, and the junction of shaft is stretched by square boom and side It is embedded with optical axis, the outside of the resilient key is wrapped with the first O-ring, and the outer surface of side's boom is arranged with buffer spring, The other end of side's boom is fixedly connected by resilient key with hexagonal set, the end of hexagonal set and workpiece pressuring clamping device Top is welded and fixed, and the interlude that the lower section of the workpiece pressuring clamping device is located at outer framework component is fixedly installed with tooling placement Platform is fixedly installed with tooling at the top of the upper tooling placement platform；

The upper tooling is by turret head, the first tooling handle, lower working plate, workpiece for measurement, plane contact screw and lower work Fill set pin sleeve composition, the equidistant uniform fixed installation in the bottom of the lower working plate there are three plane contact screw, it is described on Tooling is connect by plane contact screw with upper tooling placement platform, and the top of the lower working plate, which is embedded in, is equipped with lower tooling Set pin sleeve, the center of top of the lower working plate are fixedly installed with workpiece for measurement, the top vertical welding of the workpiece for measurement It is fixed with turret head, bottom and the lower tooling placement platform of the upper tooling placement platform are connected and fixed；

The lower tooling placement platform is by lower tooling mounting plate, interior conehead, external conical sleeve, gag lever post, lifting plate, rectangle bullet Spring, third O-ring, buffer, lower tooling gas circuit butt hole, linear bearing and stop screw composition, the top of the lifting plate Quadrangle is embedded in and is equipped with buffer, and the bottom of the corresponding lifting plate of the buffer is provided with linear bearing, the lifting plate Top lower tooling mounting plate is equipped with by Rectangular Spring, and lower tooling mounting plate is horizontally disposed, the lower tooling mounting plate Top insertion is equipped with interior conehead, is enclosed with external conical sleeve on the outside of the interior conehead, and the bottom of the interior conehead and external conical sleeve is equal It is fixedly connected at the top of Rectangular Spring, the lower tooling gas circuit butt hole insertion is mounted on beside Rectangular Spring, and is located at and is leaned on The side of nearly lower tooling mounting plate, the lower tooling mounting plate top two sides, which are correspondingly embedded in, is equipped with stop screw, the limit Gag lever post is correspondingly arranged on immediately below screw, the top of the lower tooling placement platform is fixedly mounted by lower tooling mounting plate There is lower tooling；

The lower tooling is by sphere-contact screw, the second tooling handle, gas circuit return block, load cylinder, measurement contact circle Plate, piston end surface contact sphere screw, gas path joint, upper tool locating guide and upper working plate composition, the upper working plate Top two sides are correspondingly arranged on tool locating guide, and the two sides of the upper tool locating guide are located at the top two of upper working plate Side is fixedly installed with two second tooling handles, and the top side of the upper working plate of the second tooling handle side is correspondingly arranged on Two gas path joints, the center of top of the upper working plate are equipped with seven piston end surface contact sphere screws, and piston end vertically The gap of face contact sphere screw between any two is provided with gas circuit return block, and the bottom center of the upper working plate is embedded in installation There is load cylinder, is fixedly connected at the top of the output end and measurement contact plectane of the load cylinder, the load cylinder side Frame assembly on the inside of be bolted pneumatic control components be installed, the bottom of the measurement contact plectane and displacement sensing Device assembly is fixedly connected.

Further, the side stretches shaft and the junction of Coupling Shaft is provided with the second O-ring.

Further, the top two sides of the lower working plate, which are correspondingly embedded in, is equipped with the first tooling handle.

Further, it there are four the numbers of the Rectangular Spring, and opposes in distributed rectangular.

Further, the junction of the lower tooling gas circuit butt hole and lower tooling mounting plate is provided with third O-ring.

Further, the top side of the upper working plate is correspondingly arranged on two sphere-contact screws.

Compared with prior art, the utility model beneficial effect achieved is: the automatic piston clearance detection machine, uses Machine measurement, measurement accuracy height, is not easy to judge by accident high production efficiency, while need to only switch tooling and achieve that mostly several compressors Detection, completes docking for gas circuit while realizing with gas path joint by lower tooling gas circuit butt hole and change tooling, improves Tooling with changing efficiency, reduce the technological preparation time.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is the integral planar structure front view of the utility model；

Fig. 2 is the overall structure side view of the utility model；

Fig. 3 is the main axle rotation device structure front view of the utility model；

Fig. 4 is the main axle rotation device structure B-B sectional view of the utility model；

Fig. 5 is C regional structure enlarged drawing in Fig. 4 of the utility model；

Fig. 6 is D regional structure enlarged drawing in Fig. 4 of the utility model；

Fig. 7 is the upper tooling planar structure front view of the utility model；

Fig. 8 is the upper tooling planar structure top view of the utility model；

Fig. 9 is the lower tooling placement platform structure front view of the utility model；

Figure 10 is the lower tooling placement platform structural side view of the utility model；

Figure 11 is the lower tooling placement platform structure top view of the utility model；

Figure 12 is the lower tool structure front view of the utility model；

Figure 13 is the lower tool structure top view of the utility model；

Figure 14 is guide sample structure front view；

Figure 15 is guide sample structure side view；

In figure: 1, frame assembly；2, main axle rotation device；3, workpiece pressuring clamping device；4, upper tooling；5, upper tooling is placed flat Platform；6, lower tooling placement platform；7, lower tooling；8, three color tower lamp；9, man-machine interface；10, electronic box；11, pneumatic control components； 12, displacement sensor component；21, the first O-ring；22, the second O-ring；23, shaft is stretched by side；24, bearing block；25, carrier base； 26, square boom；27, hexagonal set；28, buffer spring；29, Coupling Shaft；210, axle sleeve；211, optical axis；212, resilient key；213, it rolls Pearl bearing；214, locking nut；215, servo motor；216, planet-gear speed reducer；217, shaft coupling；41, turret head；42, One tooling handle；43, lower working plate；44, workpiece for measurement；45, plane contact screw；46, lower tool locating guide；61, lower work Fill mounting plate；62, interior conehead；63, external conical sleeve；64, gag lever post；65, lifting plate；66, Rectangular Spring；67, third O-ring；68, Buffer；69, lower tooling gas circuit butt hole；610, linear bearing；611, stop screw；71, sphere-contact screw；72, second Tooling handle；73, gas circuit return block；74, cylinder is loaded；75, measurement contact plectane；76, piston end surface contacts sphere screw； 77, gas path joint；78, upper tool locating guide；79, upper working plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-13 is please referred to, the utility model provides a kind of technical solution: a kind of automatic piston clearance detection machine, including it is outer Frame assembly 1, main axle rotation device 2, workpiece pressuring clamping device 3, upper tooling 4, upper tooling placement platform 5, lower tooling placement platform 6, lower tooling 7, three color tower lamps 8, man-machine interface 9, electronic box 10, pneumatic control components 11 and displacement sensor component 12, outer framework One lateral roof of component 1, which is bolted, is equipped with man-machine interface 9, and the top of man-machine interface 9 is provided with three color tower lamps 8, electricity Case 10 is mounted by means of bolts on another side bottom of outer framework component 1, and the inner upper of outer framework component 1 is embedded with vertically Main axle rotation device 2；

Main axle rotation device 2 by the first O-ring 21, the second O-ring 22, side stretch shaft 23, bearing block 24, carrier base 25, Square boom 26, hexagonal set 27, buffer spring 28, Coupling Shaft 29, axle sleeve 210, optical axis 211, resilient key 212, ball bearing 213, Locking nut 214, servo motor 215, planet-gear speed reducer 216 and shaft coupling 217 form, the output shaft of servo motor 215 with Planet-gear speed reducer 216 connects, and the output shaft of planet-gear speed reducer 216 by shaft coupling 217 and turns through 25 side of carrier base Spindle 29 is fixedly connected, and the inside of carrier base 25 is arranged in shaft coupling 217, and the other end side of being nested and fixed of Coupling Shaft 29 is stretched Shaft 23, the junction for just stretching shaft 23 and Coupling Shaft 29 is provided with the second O-ring 22, convenient for the buffering of junction, Fang Shenzhuan The outside of axis 23 is connect by the ball bearing 213 that bearing block 24 is nested and fixed in outside with carrier base 25, and shaft 23 is just stretched Axle sleeve 210 is socketed on the outside of the other end, and axle sleeve 210 is stretched shaft 23 with side by locking nut 214 and is fixedly connected, and shaft is just stretched 23 end is embedded in the side's of being equipped with boom 26, and square boom 26 and the square junction for stretching shaft 23 are embedded with optical axis 211, resilient key 212 outside is wrapped with the first O-ring 21, and the outer surface of square boom 26 is arranged with buffer spring 28, the other end of square boom 26 It being fixedly connected by resilient key 212 with hexagonal set 27, the end of hexagonal set 27 and the top of workpiece pressuring clamping device 3 are welded and fixed, The interlude that the lower section of workpiece pressuring clamping device 3 is located at outer framework component 1 is fixedly installed with tooling placement platform 5, and upper tooling is put The top of horizontalization platform 5 is fixedly installed with tooling 4；

Upper tooling 4 is by turret head 41, the first tooling handle 42, lower working plate 43, workpiece for measurement 44, plane contact screw 45 It is formed with lower tool locating guide 46, there are three plane contact screws for the equidistant uniform fixed installation in the bottom of lower working plate 43 45, upper tooling 4 is connect by plane contact screw 45 with upper tooling placement platform 5, and the top of lower working plate 43 is embedded in installation There is lower tool locating guide 46, the top two sides of lower working plate 43, which are correspondingly embedded in, is equipped with the first tooling handle 42, is easily installed It uses, the center of top of lower working plate 43 is fixedly installed with workpiece for measurement 44, and the top vertical of workpiece for measurement 44 is welded with Turret head 41, the bottom of upper tooling placement platform 5 are connected and fixed with lower tooling placement platform 6；

Lower tooling placement platform 6 by lower tooling mounting plate 61, interior conehead 62, external conical sleeve 63, gag lever post 64, lifting plate 65, Rectangular Spring 66, third O-ring 67, buffer 68, lower tooling gas circuit butt hole 69, linear bearing 610 and 611 groups of stop screw At the top quadrangle of lifting plate 65, which is embedded in, is equipped with buffer 68, and the bottom of the corresponding lifting plate 65 of buffer 68 is provided with The top of linear bearing 610, lifting plate 65 is equipped with lower tooling mounting plate 61, and lower tooling mounting plate 61 by Rectangular Spring 66 Horizontally disposed, insertion is equipped with interior conehead 62 at the top of lower tooling mounting plate 61, and the outside of interior conehead 62 is enclosed with external conical sleeve 63, interior The bottom of conehead 62 and external conical sleeve 63 is fixedly connected with the top of Rectangular Spring 66, and there are four the numbers of Rectangular Spring 66, and It opposes in distributed rectangular, is convenient for uniform force, the lower insertion of tooling gas circuit butt hole 69 is mounted on 66 side of Rectangular Spring, and is located at Close to the side of lower tooling mounting plate 61, the junction of lower tooling gas circuit butt hole 69 and lower tooling mounting plate 61 is provided with third O-ring 67, convenient for the buffering of junction, lower 61 top two sides of tooling mounting plate, which are correspondingly embedded in, is equipped with stop screw 611, limit The underface of screw 611 is correspondingly arranged on gag lever post 64, and the top of lower tooling placement platform 6 is fixed by lower tooling mounting plate 61 Lower tooling 7 is installed；

Lower tooling 7 is connect by sphere-contact screw 71, the second tooling handle 72, gas circuit return block 73, load cylinder 74, measurement Plectane 75, piston end surface contact sphere screw 76, gas path joint 77, upper tool locating guide 78 and upper working plate 79 is touched to form, The top two sides of upper working plate 79 are correspondingly arranged on tool locating guide 78, and the two sides of upper tool locating guide 78 are located at upper work The top two sides of loading board 79 are fixedly installed with two second tooling handles 72, the top of the upper working plate 79 of 72 side of the second tooling handle Portion side is correspondingly arranged on two gas path joints 77, and the center of top of upper working plate 79 is equipped with seven piston end surface contact balls vertically Face screw 76, and the gap of piston end surface contact sphere screw 76 between any two is provided with gas circuit return block 73, upper working plate 79 top side is correspondingly arranged on two sphere-contact screws 71, uses convenient for connection, the bottom center insertion of upper working plate 79 Load cylinder 74 is installed, the output end for loading cylinder 74 is fixedly connected with the top of measurement contact plectane 75, loads cylinder 74 It is bolted on the inside of the frame assembly 1 of side and pneumatic control components 11 is installed, the bottom and position of measurement contact plectane 75 Displacement sensor component 12 is fixedly connected；Device power-up, switching machine tooling need first standard specimen, and man-machine interface 9 selects standard specimen process, It is manually placed into standard specimen, standard specimen pattern is shown in Figure 14-15；Artificial double-button starting, equipment are automatically performed according to designated program to displacement The calibration of sensor module 12, takes standard specimen away, is put into workpiece for measurement 44, puts turret head 41, and double-button starting, workpiece compresses dress 3 pushings are set, lower tooling placement platform 6 drives lower tooling 7 slowly to jack up, and the sphere-contact screw 71 of lower tooling 7 touches work Rectangular Spring 66 is in compressive state after filling 4 plane contact screw 45, and interior conehead 61 is detached from external conical sleeve 62, puts lower tooling Horizontalization platform 6 is in a kind of quick condition, in order to the sphere-contact screw 71 in lower tooling 7 be allowed preferably to be bonded upper tooling 4 plane contact screw 45, by buffer 65, stop screw 68, gag lever post 69 can limit amount of floating prevents displacement sensing 12 excess of stroke of device assembly, to improve measurement stability and safety, main axle rotation device 2 is pushed in rotation, in place rear hexagonal set 27 are inserted in turret head 41 automatically, drive compressor main shaft rotation, and piston end surface contacts sphere screw 76 and pushed up by load cylinder 74 Firmly piston measures each piston with cylinder body clearance one by one by compressor main shaft swash plate top to maximum angle while rotation Value, according to the parameter set in advance in man-machine interface 9, system detects automatically, determines stand off NG or OK, three color tower lamps 8 automatically Manual prompt is given according to the judgement bright different colours lamp of OK or NG；It is realized by lower tooling gas circuit butt hole 67 with gas path joint 77 The docking of gas circuit is completed while changing tooling.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (6)

1. a kind of automatic piston clearance detection machine, including outer framework component (1), main axle rotation device (2), workpiece pressuring clamping device (3), upper tooling (4), upper tooling placement platform (5), lower tooling placement platform (6), lower tooling (7), three color tower lamps (8), man-machine Interface (9), electronic box (10), pneumatic control components (11) and displacement sensor component (12), it is characterised in that: the outer framework group One lateral roof of part (1), which is bolted, to be equipped with man-machine interface (9), is provided with three colors above the man-machine interface (9) Tower lamp (8), the electronic box (10) are mounted by means of bolts on another side bottom of outer framework component (1), the outer framework group The inner upper of part (1) is embedded with main axle rotation device (2) vertically；

The main axle rotation device (2) by the first O-ring (21), the second O-ring (22), side stretch shaft (23), bearing block (24), Carrier base (25), square boom (26), hexagonal set (27), buffer spring (28), Coupling Shaft (29), axle sleeve (210), optical axis (211), Resilient key (212), ball bearing (213), locking nut (214), servo motor (215), planet-gear speed reducer (216) and shaft coupling Device (217) composition, the output shaft of the servo motor (215) are connect with planet-gear speed reducer (216), the planet-gear speed reducer (216) output shaft is fixedly connected by shaft coupling (217) with Coupling Shaft (29) through carrier base (25) side, and shaft coupling (217) it is arranged in the inside of carrier base (25), the other end side of being nested and fixed of the Coupling Shaft (29) is stretched shaft (23), described The ball bearing (213) of bearing block (24) is nested and fixed by outside for the outside that shaft (23) is stretched by side and carrier base (25) connect Connect, the side stretches to be socketed with axle sleeve (210) on the outside of the other end of shaft (23), and axle sleeve (210) by locking nut (214) with Side stretches shaft (23) and is fixedly connected, and the side stretches the end insertion side's of being equipped with boom (26) of shaft (23), and square boom (26) The junction for stretching shaft (23) with side is embedded with optical axis (211), and the outside of the resilient key (212) is wrapped with the first O-ring (21), the outer surface of side's boom (26) is arranged with buffer spring (28), and the other end of side's boom (26) passes through elasticity Pin (212) is fixedly connected with hexagonal set (27), and the top welding of the end and workpiece pressuring clamping device (3) of the hexagonal set (27) is solid Fixed, the interlude that the lower section of the workpiece pressuring clamping device (3) is located at outer framework component (1) is fixedly installed with tooling placement platform (5), tooling (4) are fixedly installed at the top of the upper tooling placement platform (5)；

The upper tooling (4) is by turret head (41), the first tooling handle (42), lower working plate (43), workpiece for measurement (44), plane Contact screw (45) and lower tool locating guide (46) composition, the equidistant uniform fixed installation in bottom of the lower working plate (43) There are three plane contact screw (45), the upper tooling (4) is connected by plane contact screw (45) and upper tooling placement platform (5) It connects, the top of the lower working plate (43), which is embedded in, is equipped with lower tool locating guide (46), the top of the lower working plate (43) Portion center is fixedly installed with workpiece for measurement (44), and the top vertical of the workpiece for measurement (44) is welded with turret head (41), The bottom of the upper tooling placement platform (5) is connected and fixed with lower tooling placement platform (6)；

The lower tooling placement platform (6) by lower tooling mounting plate (61), interior conehead (62), external conical sleeve (63), gag lever post (64), Lifting plate (65), Rectangular Spring (66), third O-ring (67), buffer (68), lower tooling gas circuit butt hole (69), linear axis (610) and stop screw (611) composition are held, the top quadrangle of the lifting plate (65), which is embedded in, is equipped with buffer (68), institute The bottom for stating the corresponding lifting plate (65) of buffer (68) is provided with linear bearing (610), and the top of the lifting plate (65) is logical It crosses Rectangular Spring (66) and lower tooling mounting plate (61) is installed, and lower tooling mounting plate (61) is horizontally disposed, the lower tooling peace Insertion is equipped with interior conehead (62) at the top of loading board (61), is enclosed with external conical sleeve (63) on the outside of the interior conehead (62), described interior The bottom of conehead (62) and external conical sleeve (63) is fixedly connected at the top of Rectangular Spring (66), the lower tooling gas circuit butt hole (69) insertion is mounted on beside Rectangular Spring (66), and is located at close to the side of lower tooling mounting plate (61), the lower tooling peace Two sides, which are correspondingly embedded in, at the top of loading board (61) is equipped with stop screw (611), is correspondingly arranged immediately below the stop screw (611) Have gag lever post (64), the top of the lower tooling placement platform (6) is fixedly installed with lower tooling by lower tooling mounting plate (61) (7)；

The lower tooling (7) is by sphere-contact screw (71), the second tooling handle (72), gas circuit return block (73), load cylinder (74), measurement contact plectane (75), piston end surface contact sphere screw (76), gas path joint (77), upper tool locating guide (78) it is formed with upper working plate (79), the top two sides of the upper working plate (79) are correspondingly arranged on tool locating guide (78), the top two sides that the two sides of the upper tool locating guide (78) are located at upper working plate (79) are fixedly installed with two second works It fills handle (72), the top side of the upper working plate (79) of the second tooling handle (72) side is correspondingly arranged on two gas circuits and connects Head (77), the center of top of the upper working plate (79) are equipped with seven piston end surface contacts sphere screw (76) vertically, and living The gap of plug end face contact sphere screw (76) between any two is provided with gas circuit return block (73), the upper working plate (79) Bottom center insertion is equipped with load cylinder (74), the output end of load cylinder (74) and the top of measurement contact plectane (75) Portion is fixedly connected, and is bolted on the inside of the frame assembly (1) of described load cylinder (74) side and is equipped with pneumatic control member The bottom of part (11), measurement contact plectane (75) is fixedly connected with displacement sensor component (12).

2. a kind of automatic piston clearance detection machine according to claim 1, it is characterised in that: the side stretch shaft (23) and The junction of Coupling Shaft (29) is provided with the second O-ring (22).

3. a kind of automatic piston clearance detection machine according to claim 1, it is characterised in that: the lower working plate (43) Top two sides, which are correspondingly embedded in, is equipped with the first tooling handle (42).

4. a kind of automatic piston clearance detection machine according to claim 1, it is characterised in that: the Rectangular Spring (66) There are four numbers, and opposes in distributed rectangular.

5. a kind of automatic piston clearance detection machine according to claim 1, it is characterised in that: the lower tooling gas circuit docking Hole (69) and the junction of lower tooling mounting plate (61) are provided with third O-ring (67).

6. a kind of automatic piston clearance detection machine according to claim 1, it is characterised in that: the upper working plate (79) Top side is correspondingly arranged on two sphere-contact screws (71).