A compressor crankshaft parts assembly and thrust surface grinding production line

Abstract

A compressor crankshaft accessories assembly and thrust surface grinding production line, characterized in that it includes the following components: a frame, a turntable is installed on the frame through a rotating mechanism, and a plurality of crankshaft positioning seats are distributed in a circular array on the turntable; corresponding to the positions of the crankshaft positioning seats, a compressor oil sheet automatic assembly robot, a spring oil plug automatic assembly robot and a thrust surface grinding robot are sequentially arranged on the frame. The beneficial effect of the present invention is: the oil sheet is installed into the crankshaft by using the oil sheet feeding robot, and the installation parameters of the oil sheet can be set by the system to ensure the uniformity of the installation standards of each oil sheet and ensure the stability of quality. The whole process is automated, no human intervention is required, and the production efficiency is high and the quality is stable.

Description

Technical Field

[0001] The invention relates to mechanical equipment, in particular to a compressor crankshaft accessory assembly and thrust surface grinding production line. Background Art

[0002] like Figure 3 , 4 As shown, the current rotary compressor is achieved by arranging a main oil circuit and an oil channel connected to the main oil circuit on the crankshaft, and the main oil circuit is connected to the oil pool at the bottom of the compressor, and the lubricating oil in the oil pool is transported to the main oil circuit through a spiral oil sheet, and then the lubricating oil can flow out through the oil channel to achieve oil supply and lubrication of the rollers in the compressor.

[0003] like Fig.13 As shown, in the prior art, it is necessary to install a spring oil plug in the oil channel, and the oil plug is used to limit the amount of oil, so that when the compressor is running at high frequency, the lubricating oil in the oil channel will not be directly sprayed out from the upper end of the crankshaft body, which reduces the exhaust oil content of the compressor and improves the reliability of the compressor. However, in the current structure, when installing the oil sheet, it is necessary to manually insert the spiral oil sheet into the mounting hole of the crankshaft end face, and there are strict requirements on the installation depth and angle of the oil sheet. However, since the oil sheet itself is long and narrow, the material is light and soft, and the oil sheet and the mounting hole of the crankshaft are connected by a tight fit, it is difficult to install it manually. At the same time, the spring oil plug is in the shape of a pagoda, and it also needs to be manually installed into the mounting hole using needle-nosed pliers. However, due to the small size of the spring oil plug and the deep installation depth, there are also defects such as the difficulty of manual installation and low installation efficiency. Therefore, it is necessary to make further improvements to it. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a production line with simple structure, convenient use, high installation efficiency, good assembly quality and capable of automatically assembling various crankshaft accessories.

[0005] The object of the present invention is achieved in the following manner: A compressor crankshaft accessories assembly and thrust surface grinding production line, characterized in that it includes the following components;

[0006] A frame, on which a turntable is installed through a rotating mechanism, and a plurality of crankshaft positioning seats are distributed in a circumferential array on the turntable; corresponding to the positions of the crankshaft positioning seats, a compressor oil sheet automatic assembly robot, a spring oil plug automatic assembly robot and a thrust surface grinding robot are sequentially arranged on the frame;

[0007] Wherein, the compressor oil sheet automatic assembly robot comprises an oil sheet feeding robot and an oil sheet guiding robot;

[0008] The oil sheet feeding manipulator comprises a feeding guide block fixed on a frame, a feeding fixture is installed on the feeding guide block through a guide rod, a feeding cylinder is installed between the feeding fixture and the feeding guide block, and the feeding cylinder drives the feeding fixture to move relative to the feeding guide block under the action of the guide rod; the feeding fixture comprises a first clamping cylinder, a first clamping arm and a second clamping arm arranged on its two moving blocks, and the two arms move relative to or away from each other under the movement of the first clamping cylinder to clamp the oil sheet between them;

[0009] The oil sheet guide manipulator includes a guide slider fixed on a frame, a guide cylinder is installed between the guide slider and the frame, the guide cylinder drives the guide slider to move relative to the frame, the guide slider is provided with a second clamping cylinder, the two moving arms of the second clamping cylinder are provided with a first guide ring and a second guide ring, the second clamping cylinder drives the first guide ring to move relative to or away from the second guide ring;

[0010] The automatic assembly manipulator for the oil plug of the crankshaft spring of the compressor is characterized in that: it comprises an upper bracket and a lower bracket fixed on the frame, the upper and lower brackets are connected by a guide shaft, a sliding plate is installed on the guide shaft through a linear bearing, a ball screw is installed between the sliding plate and the upper bracket, the ball screw and the sliding plate are connected by a screw nut, the upper bracket and the ball screw are connected by a screw bearing, the tail end of the ball screw is connected to a servo motor through a coupling, the top end of the ball screw is connected to an oil plug pressing rod through a fixture, and the servo motor drives the ball screw to rotate and make axial movement relative to the upper bracket;

[0011] The thrust surface grinding robot comprises a grinding head bracket fixed on a frame, on which a grinding head slider is mounted through a grinding head guide rail, and the grinding head slider can move up and down along the grinding head guide rail under the drive of a grinding head cylinder; a grinding head driven by a grinding head motor is mounted on the grinding head slider.

[0012] The oil sheet feeding manipulator is installed above the oil sheet guiding manipulator, and after the first clamping arm and the second clamping arm clamp, its central axis is aligned with the central axis after the first guide ring and the second guide ring clamp.

[0013] The first clamping arm and the second clamping arm are semicircular in cross section, and a positioning area is provided on the opposite surface of the lower end thereof according to the shape of the end of the oil sheet, and the oil sheet is clamped and fixed in the positioning area.

[0014] Semicircular positioning grooves are arranged on the opposite surfaces of the first guide ring and the second guide ring, and a conical guiding area is arranged on the upper end surface of the positioning groove. The oil sheet feeding robot inserts the oil sheet from the guiding area so that the oil sheet passes through the positioning groove and is inserted into the mounting hole of the crankshaft end surface.

[0015] A positioning plate is also installed at the bottom of the second clamping cylinder, and a docking sleeve is arranged at the bottom of the positioning plate. The docking sleeve is sleeved on the end face of the crankshaft, and a docking hole is arranged in the docking sleeve and is connected with the mounting hole of the end face of the crankshaft.

[0016] The head of the oil plug pressing rod is a conical guide head, and the taper of the guide head is smaller than the taper of the inner hole of the spring oil plug.

[0017] The rotation direction of the servo motor is arranged to be the same as the rotation direction of the spring oil plug.

[0018] The diameter of the oil plug pressing rod is set smaller than the diameter of the mounting hole of the crankshaft.

[0019] The rotating mechanism is a speed reducer fixed on the frame, the output shaft of the speed reducer is connected to the turntable, and the input shaft of the speed reducer is connected to the turntable servo motor.

[0020] The spring oil plug automatic assembly robot is installed below the turntable, and installs the spring oil plug into the lower end surface of the crankshaft from bottom to top.

[0021] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness. 2. The oil sheet is installed into the crankshaft by using an oil sheet feeding robot. The installation parameters of the oil sheet can be set through the system to ensure the uniformity of the installation standards of each oil sheet and to ensure stable quality. 3. According to the characteristics of the oil sheet, a unique guide robot is set to ensure that the oil sheet will not bend or deform during the docking process with the crankshaft, thereby improving installation efficiency. 4. The servo motor is used to drive the oil plug pressing rod to rise in a rotational manner, and the spring oil plug is assembled into the crankshaft. The installation efficiency is high and the quality is stable. At the same time, it is ensured that the spring oil plug will not be damaged during installation. 5. The whole process is automated, no human intervention is required, and the production efficiency is high and the quality is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 , 2 This is a schematic diagram of the overall assembly of the structure of the present invention.

[0023] Figure 3 , 4 It is a schematic diagram of the installation of the oil plate and the crankshaft in the present invention.

[0024] Figure 5 , 6 The figure is a schematic diagram of the structure of the oil sheet feeding robot in the present invention.

[0025] Figure 7 This is a diagram showing the state of the slider when the mechanical arm is in the open state in the present invention.

[0026] Figure 8 , 9 Schematic diagram of the structure of the oil sheet guide manipulator in the present invention

[0027] Fig.10 This is a cross-sectional view of the oil sheet guiding manipulator structure of the present invention.

[0028] Fig.11 , 12 It is a schematic diagram of the structure of the automatic assembly robot for the spring oil plug in the present invention.

[0029] Fig.13 This is an assembly diagram of the crankshaft and the spring oil plug in the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] The present invention is further described in detail below with reference to the accompanying drawings. A compressor crankshaft parts assembly and thrust surface grinding production line, characterized in that it includes the following components;

[0032] A frame 1, on which a turntable 8 is mounted via a rotating mechanism, and on which a plurality of crankshaft positioning seats 81 are distributed in a circumferential array;

[0033] Corresponding to the position of the crankshaft positioning seat 81, a compressor oil sheet automatic assembly robot, a spring oil plug automatic assembly robot and a thrust surface grinding robot 9 are sequentially arranged on the frame;

[0034] Wherein, the compressor oil sheet automatic assembly robot comprises an oil sheet feeding robot and an oil sheet guiding robot;

[0035] The oil sheet feeding manipulator includes a feeding guide block 11 fixed on the frame 1, the feeding guide block 11 is provided with a feeding fixture 13 through a guide rod 12, a feeding cylinder 14 is provided between the feeding fixture 13 and the feeding guide block 11, and the feeding cylinder 14 drives the feeding fixture 13 to move relative to the feeding guide block 11 under the action of the guide rod 12; the feeding fixture 13 includes a first clamping cylinder 131, a first clamping arm 132 and a second clamping arm 133 arranged on its two moving blocks, and the two arms make relative motion or separate motion under the motion of the first clamping cylinder 131, clamping the oil sheet 2 therebetween;

[0036] The oil sheet guide manipulator includes a guide slider 3 fixed on the frame 1, a guide cylinder 31 is installed between the guide slider 3 and the frame 1, the guide cylinder 31 drives the guide slider 3 to move relative to the frame 1, the guide slider 3 is provided with a second clamping cylinder 32, the two moving arms of the second clamping cylinder 32 are installed with a first guide ring 33 and a second guide ring 34, the second clamping cylinder 32 drives the first guide ring 33 and the second guide ring 34 to be opposite or separated;

[0037] The automatic assembly manipulator for the crankshaft spring oil plug of the compressor is characterized in that: it includes an upper bracket 6 and a lower bracket 61 fixed on the frame, the upper and lower brackets are connected by a guide shaft 62, a sliding plate 64 is installed on the guide shaft 62 through a linear bearing 63, a ball screw 65 is installed between the sliding plate 64 and the upper bracket 6, the ball screw 65 and the sliding plate 64 are connected by a screw nut 66, the upper bracket 6 is connected to the ball screw 65 by a screw bearing 67, and the tail end of the ball screw 65 is connected to the upper bracket 6 by a screw bearing 67.

[0038] A servo motor 69 is connected through a coupling 68, and an oil plug pressing rod 71 is connected to the top of the ball screw 65 through a fixture 7. The servo motor 69 drives the ball screw 65 to rotate and make axial movement relative to the upper bracket 6;

[0039] The thrust surface grinding robot 9 includes a grinding head bracket 91 fixed on the frame 1, and a grinding head slider 93 is installed on the grinding head bracket 91 through a grinding head guide rail 92. The grinding head slider 93 can move up and down along the grinding head guide rail 92 under the drive of the grinding head cylinder 94; the grinding head slider 93 is installed with a grinding head 96 driven by a grinding head motor 95.

[0040] The oil sheet feeding robot is installed above the oil sheet guiding robot. After the first clamping arm 132 and the second clamping arm 133 clamp, its central axis is aligned with the central axis after the first guide ring 33 and the second guide ring 34 clamp.

[0041] The first clamping arm 132 and the second clamping arm 133 are semicircular in cross section, and a positioning area 134 is provided on the opposite surface of the lower end thereof according to the shape of the end of the oil sheet 2 , and the oil sheet 2 is clamped and fixed in the positioning area.

[0042] Semicircular positioning grooves 35 are provided on the opposite surfaces of the first guide ring 33 and the second guide ring 34, and a conical guiding area 36 is provided on the upper end surface of the positioning groove 35. The oil sheet feeding robot inserts the oil sheet 2 from the guiding area 36 so that the oil sheet passes through the positioning groove 35 and is inserted into the mounting hole 41 on the end surface of the crankshaft 4.

[0043] A positioning plate 5 is also installed at the bottom of the second clamping cylinder 32, and a docking sleeve 51 is provided at the bottom of the positioning plate. The docking sleeve 51 is sleeved on the end face of the crankshaft 4, and a docking hole 52 is provided in the docking sleeve 51 to communicate with the mounting hole 41 on the end face of the crankshaft.

[0044] The head of the oil plug pressing rod 71 is a conical introduction head 72 , and the taper of the introduction head 72 is smaller than the taper of the inner hole of the spring oil plug 42 .

[0045] The rotation direction of the servo motor 69 is set to be the same as the rotation direction of the spring oil plug 42.

[0046] The diameter of the oil plug pressing rod 71 is smaller than the diameter of the mounting hole 41 of the crankshaft.

[0047] The rotating mechanism is a reducer 82 fixed on the frame 1, the output shaft of the reducer 82 is connected to the turntable, and the input shaft of the reducer is connected to the turntable servo motor.

[0048] The spring oil plug automatic assembly robot is installed below the turntable, and installs the spring oil plug into the lower end surface of the crankshaft from bottom to top.

[0049] Working principle: When in use, the crankshaft to be assembled is inserted into the crankshaft positioning seat 81 on the turntable manually or by a robot; then, as the turntable rotates, the turntable sends the crankshaft to the designated workstation. When the crankshaft moves to the position of the automatic assembly robot for the compressor oil sheet, the oil sheet vibrates the feeding plate (not shown in the figure) to send the oil sheet to the material-picking working range of the oil sheet feeding robot. A holding cylinder in the feeding robot drives the first clamping arm 132 and the second clamping arm 133 to open. When the oil sheet enters its clamping range, the first clamping cylinder 131 drives the first clamping arm 132 and the second clamping arm 133 to close, and the oil sheet is

[0050] 2 is clamped between the two. Since the oil sheet is spiral and its end surface is an irregular guide sheet, a positioning area is provided on the clamping surface opposite to the first clamping arm 132 and the second clamping arm 133 according to the shape of the oil sheet, and the positioning area enables the oil sheet to be clamped between the two without deformation.

[0051] When assembling the oil sheet, the positioning plate 5 moves downward under the drive of the guide cylinder 31, and the docking sleeve 51 on the positioning plate 5 is docked with the end face of the crankshaft, so that the docking hole 52 provided in the docking sleeve 51 is connected with the mounting hole 41 of the end face of the crankshaft. After the docking is completed, the oil sheet feeding robot descends, passes the oil sheet clamped in the fixture through the guide ring, and inserts it into the mounting hole of the end face of the crankshaft. Among them, the conical guide area 36 on the upper end face of the guide ring plays a guiding role for the oil sheet, making the oil sheet feeding robot smoother in the process of inserting the oil sheet downward, and the positioning groove formed by the first guide ring 33 and the second guide ring 34 plays a role in limiting the oil sheet, preventing it from bending and deforming when it is inserted into the crankshaft, while facilitating the smooth installation of the oil sheet and avoiding damage to the oil sheet during the installation process.

[0052] When the oil sheet is installed in place, the first clamping arm 132 and the second clamping arm 133 open to release the oil sheet, and the first guide ring 33 and the second guide ring 34 also open synchronously, so that the oil sheet is separated from the oil sheet feeding robot and the oil sheet guiding robot. At this time, the oil sheet guiding robot moves upward, forcing the docking sleeve 51 to separate from the crankshaft. The installed crankshaft can be taken away by the robot, completing the docking of a crankshaft and the oil sheet. The oil sheet feeding robot can then clamp the next oil sheet and install it into the next crankshaft, and the production cycle is repeated in this way.

[0053] Compared with traditional technology, this case uses an oil sheet feeding manipulator to assemble the oil sheet. Therefore, the installation parameters of the oil sheet (such as installation depth, rotation angle of the oil sheet, etc.) can be adjusted to adapt to the use of compressors of different models, and can ensure that all assembled products can be consistent, which is conducive to ensuring the stability of production quality. Furthermore: the unique oil sheet guide manipulator plays a guiding and positioning role in the installation of the oil sheet, thereby solving the technical difficulty of the oil sheet being easily bent and deformed due to its own characteristics during the traditional assembly process, which is conducive to the stability of the oil sheet during later use.

[0054] When the crankshaft completes the oil plate assembly, the crankshaft is sent to the spring oil plug automatic assembly robot manual position, and the spring oil plug vibration feeding plate (not shown in the figure) sends the spring oil plug to the working range of the oil plug robot (not shown in the figure). The oil plug robot puts the spring oil plug on the conical guide head 72 at the head of the oil plug pressing rod 71, and then the servo motor rotates to drive the guide head 72 to rotate and move upward, so that the spring oil plug is inserted into the mounting hole of the crankshaft in a rotating and rising manner. Among them, the rotation direction of the guide head is consistent with the spiral direction of the spring oil plug. Therefore, when the spring oil plug contacts the mounting hole, the outer surface of the spring oil plug contacts the inner wall of the mounting hole. At this time, the rotation of the guide head can force the outer diameter of the spring oil plug to decrease and the height to increase. Therefore, after the outer diameter of the spring oil plug is reduced, it can be pressed into the mounting hole of the crankshaft more smoothly. When the spring oil plug is installed in place, the guide head is disengaged from the mounting hole of the crankshaft under the reverse drive of the servo motor. At this time, the spring oil plug is no longer subjected to the torque of the guide head, but is elastically reset and stuck in the position set in the crankshaft mounting hole to complete the installation of the spring oil plug.

[0055] Compared with traditional technology, in this case, a robot is used to spin the spring oil plug into the crankshaft. While realizing the spring oil plug installation function, the spinning process forces the spring oil plug to deform elastically evenly during the installation process to reduce its outer diameter, making its assembly with the crankshaft smoother and more stable, thus avoiding the defects of the traditional technology of using needle-nosed pliers for manual assembly, such as damage to the crankshaft oil plug, low installation efficiency, and unstable installation quality.

[0056] When the crankshaft completes the spring oil plug station, the turntable moves it to the working range of the thrust surface grinding manipulator. At this time, the grinding head cylinder 94 moves downward, driving the grinding head slider 93 to move downward along the grinding head guide rail 92; the rotating grinding head moves downward and contacts the thrust surface of the crankshaft, and the thrust surface of the crankshaft is ground to the designed state by the high-speed rotation of the grinding head. When the grinding is completed, the grinding head cylinder pushes the grinding head to reset, completing the grinding process.

[0057] The ground crankshaft is moved to the unloading station by the turntable, and the assembled crankshaft is taken out from the crankshaft positioning seat 81 manually or by a robot, and the crankshaft to be assembled is installed into the crankshaft positioning seat 81. Compared with the traditional technology, the equipment in this case can automatically complete the grinding process of the crankshaft oil plate, spring oil plug and thrust surface, and the whole process is automated without manual intervention. While efficiently completing the assembly process, due to the mechanized operation, the assembly accuracy of each accessory can be guaranteed, which is beneficial to ensure the quality of the product, so it can be widely promoted and used.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A compressor crankshaft parts assembly and thrust surface grinding production line, characterized by: It includes the following components; A frame (1), a turntable (8) is mounted on the frame (1) via a rotating mechanism, and a plurality of crankshaft positioning seats (81) are arranged in a circular array on the turntable; corresponding to the position of the crankshaft positioning seat (81), a compressor oil sheet automatic assembly robot, a spring oil plug automatic assembly robot and a thrust surface grinding robot (9) are arranged on the frame in sequence; wherein the compressor oil sheet automatic assembly robot comprises an oil sheet feeding robot and an oil sheet guide robot; wherein the oil sheet feeding robot comprises a feeding guide block (11) fixed on the frame (1), the feeding guide block (11) being mounted with a feeding fixture (13) via a guide rod (12), and a feeding air cylinder is installed between the feeding fixture (13) and the feeding guide block (11). The feeding cylinder (14) drives the feeding clamp (13) to move relative to the feeding guide block (11) under the action of the guide rod (12); the feeding clamp (13) comprises a first clamping cylinder (131), a first clamping arm (132) and a second clamping arm (133) provided on two moving blocks thereof, the two arms move relative to or away from each other under the movement of the first clamping cylinder (131), and clamp the oil sheet (2) therebetween; The oil sheet guide manipulator comprises a guide slider (3) fixed on a frame (1), a guide cylinder (31) is installed between the guide slider (3) and the frame (1), the guide cylinder (31) drives the guide slider (3) to move relative to the frame (1), the guide slider (3) is provided with a second clamping cylinder (32), the two moving arms of the second clamping cylinder (32) are provided with a first guide ring (33) and a second guide ring (34), the second clamping cylinder (32) drives the first guide ring (33) and the second guide ring (34) to be relative to or separated; a compressor crankshaft spring oil plug automatic assembly manipulator, comprising an upper bracket (6) and a lower bracket (61) fixed on the frame, the upper and lower brackets The guide shaft (62) is connected to the upper bracket (6) through a guide shaft (62), a sliding plate (64) is installed on the guide shaft (62) through a linear bearing (63), a ball screw (65) is installed between the sliding plate (64) and the upper bracket (6), the ball screw (65) and the sliding plate (64) are connected through a screw nut (66), the upper bracket (6) and the ball screw (65) are connected through a screw bearing (67), the tail end of the ball screw (65) is connected to a servo motor (69) through a coupling (68), the top end of the ball screw (65) is connected to an oil plug pressing rod (71) through a fixture (7), and the servo motor (69) drives the ball screw (65) to rotate and make axial movement relative to the upper bracket (6); The thrust surface grinding manipulator (9) comprises a grinding head bracket (91) fixed on a frame (1); a grinding head slider (93) is mounted on the grinding head bracket (91) via a grinding head guide rail (92); the grinding head slider (93) can move up and down along the grinding head guide rail (92) under the drive of a grinding head cylinder (94); a grinding head (96) driven by a grinding head motor (95) is mounted on the grinding head slider (93); The rotating mechanism is a reducer (82) fixed on the frame (1), the output shaft of the reducer (82) is connected to the turntable, and the input shaft of the reducer is connected to the turntable servo motor; The spring oil plug automatic assembly robot is installed below the turntable, and installs the spring oil plug into the lower end surface of the crankshaft from bottom to top.

2. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: The oil sheet feeding robot is installed above the oil sheet guiding robot. After the first clamping arm (132) and the second clamping arm (133) clamp, its central axis is aligned with the central axis of the first guide ring (33) and the second guide ring (34) after clamping.

3. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 2, characterized in that: The first clamping arm (132) and the second clamping arm (133) have semicircular cross-sections, and a positioning area (134) is provided on the opposite surface of the lower end thereof according to the shape of the end of the oil sheet (2), and the oil sheet (2) is clamped and fixed in the positioning area.

4. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: Semi-circular arc-shaped positioning grooves (35) are provided on the opposing surfaces of the first guide ring (33) and the second guide ring (34); the upper end surface of the positioning groove (35) is provided with a conical guide area (36); the oil sheet feeding robot inserts the oil sheet (2) from the guide area (36), so that the oil sheet passes through the positioning groove (35) and is inserted into the mounting hole (41) on the end surface of the crankshaft (4).

5. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: A positioning plate (5) is also installed at the bottom of the second clamping cylinder (32), and a docking sleeve (51) is provided at the bottom of the positioning plate. The docking sleeve (51) is sleeved on the end face of the crankshaft (4), and a docking hole (52) is provided in the docking sleeve (51) and is connected to the mounting hole (41) on the end face of the crankshaft.

6. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: The head of the oil plug pressing rod (71) is a conical introduction head (72), and the taper of the introduction head (72) is smaller than the taper of the inner hole of the spring oil plug (42).

7. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: The rotation direction of the servo motor (69) is arranged to be the same as the rotation direction of the spring oil plug (42).

8. A compressor crankshaft parts assembly and thrust surface grinding production line according to claim 1, characterized in that: The diameter of the oil plug pressing rod (71) is smaller than the diameter of the crankshaft mounting hole (41).

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