CN107214347B

CN107214347B - Motor casing inner spigot and end face finish machining vertical lathe and machining method thereof

Info

Publication number: CN107214347B
Application number: CN201710317476.1A
Authority: CN
Inventors: 赵冕; 赵建伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2020-01-03
Anticipated expiration: 2037-05-05
Also published as: CN107214347A

Abstract

The invention discloses a motor casing seam allowance and end face finish machining vertical lathe and a machining method thereof, and relates to motor casing machining equipment, in particular to a vertical lathe for finish machining of a motor casing seam allowance and an end face. A motor shell spigot, a cross beam of the end face finish machining vertical lathe, a support upright post and a guide upright post form a rigid portal frame structure; the manipulator is arranged on the cross beam; the workbench is vertically arranged on a base in the middle of the portal frame; the workbench is driven to rotate by a servo spindle motor through a reduction box and a pair of gears; the mandrel clamp is an internal expansion type self-centering mandrel clamp, is arranged at the center of the workbench, is coaxial with the rotation center of the workbench and rotates along with the workbench; the supporting device consists of a plurality of lifting oil cylinders and is used for supporting the motor shell; the side tool rest is arranged on the guide post guide rail through a sliding seat; the rotary tool turret is arranged on the front end surface of the side tool rest; the motor casing measuring head is a wireless measuring head and is arranged on the rotary cutter tower; each servo motor is connected with the numerical control system, and each oil cylinder is connected with the hydraulic system, so that a brand new process scheme and a processing flow for finish machining of the motor shell seam allowance and the end face are realized.

Description

Motor casing inner spigot and end face finish machining vertical lathe and machining method thereof

Technical Field

The invention discloses a motor casing inner spigot and end face finish machining vertical lathe and a machining method thereof, and relates to motor casing machining equipment, in particular to a motor casing inner spigot and end face finish machining vertical lathe and a machining method thereof.

Background

The finish machining process of the motor shell with the center height of more than 100mm is developed from the traditional process of turning a turning vehicle to turning a tool rest. The turning lathe is used for processing a spigot and an end face at one end of a motor shell on a vertical lathe, then turning the motor shell, clamping for the second time and processing the spigot and the end face at the other end. Due to twice clamping and positioning, the coaxiality error of the upper spigot and the lower spigot is larger; the so-called 'one-cutter lathe' is that the motor shell is clamped on the numerical control vertical lathe once, and the upper spigot, the upper end surface, the iron core hole, the lower spigot and the lower end surface of the motor shell are processed, so that the coaxiality precision and the processing efficiency of the upper spigot, the lower spigot and the iron core hole can be greatly improved.

The prior domestic typical equipment capable of meeting the requirement of a 'one-cutter lathe' process for finish machining of large, medium and small motor casings represents that:

1. shenyang machine tool, Inc., the VTC125 general type numerical control vertical lathe of production, take a perpendicular tool rest, square ram structure, can select to join in marriage the tool magazine, can select to join in marriage the gauge head, nevertheless because receive the structural constraint, can't measure lower tang and lower terminal surface, be not suitable for. There is no special fixture and no automatic motor casing loading and unloading device.

2. A CK5112B/3 heightened numerical control vertical lathe produced by a machine tool factory in a tile shop is provided with a vertical square ram tool rest and a semi-automatic special fixture for a motor shell. There is no automatic tool changing, no motor casing measurement, and no automatic motor casing loading and unloading device.

The two machine tools have the technical characteristics that:

1) are all single-column numerical control vertical lathes.

2) Only one vertical tool rest is provided, and the tool rest is of a square ram structure, so that the tool rest can conveniently extend into the motor shell to process a lower spigot.

3) The processing method comprises the following steps: the lower end face of the motor shell is axially positioned, the positioning mould is sleeved with the lower spigot for radial positioning, the four lugs are axially compressed by the pressing plate (namely 4 lugs for closing screws), then the radial positioning mould moves downwards to give way of the lower spigot, the workbench rotates, the tool rest processes the upper spigot, the upper end face, the lower spigot and the iron core hole of the motor shell according to a numerical control program, and the end face of the lower spigot cannot be processed due to axial positioning.

4) A tool changing mode: the tool magazine is mainly used for manually changing tools and few tool magazines are used for changing tools.

5) The clamping mode is as follows: the motor casing is pressed axially by a manual press plate.

Although the two machine tools can realize the processing technology of 'one-tool turning', the two machine tools have obvious defects:

1. because the motor casing is longer, the processing motor casing tang needs knife rest full stroke overhang, makes knife rest rigidity reduce by a wide margin, influences tang size precision and roughness down, causes the tang size uniformity not good from top to bottom.

2. Because the lower end surface is used for axial positioning, the lower end surface can not be turned, complete 'one-tool turning' can not be realized, and the requirement on the end face run-out precision of the lower end surface can not be met.

3. The motor casing is a thin-walled cylinder part and has poor rigidity. Therefore, the selection and adjustment of the axial clamping force of the motor shell are very difficult, the clamping force is adjusted to be large, the deformation of the motor shell is large, and the precision is easy to be out of tolerance; the clamping force is adjusted to be small, the motor shell cannot be clamped, danger occurs, the rotating speed can be reduced without any trouble, and efficiency is sacrificed.

4. Because with tang location down, iron fillings are stayed always and can't throw away automatically in the motor casing in the course of working, need shut down the back manual cleaning, influence efficiency.

5. Due to the structural limitation, the lower spigot cannot be manually measured on line, and cannot be automatically measured by a motor shell measuring head. The measurement time of the offline measurement is long, the coaxiality and the end face run-out value cannot reproduce the field measurement, and the sampling inspection can only be carried out on a three-coordinate measuring machine. This is a difficult problem that has not been solved by motor plants.

6. The links influencing the efficiency to the greatest extent are clamping, aligning and hoisting of the motor shell to the machine tool, are all manual operation, and are time-consuming and dangerous.

7. The manual pressure plate clamps the motor casing, which affects efficiency.

8. Only an inner spigot can be processed, an outer spigot cannot be processed, and the application range is small.

Aiming at the problems in the prior art, a novel vertical lathe for finish machining of the inner spigot and the end face of the motor casing and a machining method thereof are researched and designed, so that the problems in the prior art are very necessary to overcome.

Disclosure of Invention

In view of the problems in the prior art, the invention aims to research and design a novel vertical lathe for finishing the inner spigot and the end face of the motor casing and a process scheme matched with the vertical lathe for finishing the inner spigot and the end face of the motor casing so as to solve the problems in the background art.

The invention aims at the new technical scheme of the existing 'one-cutter lathe' technical design, which comprises the following steps:

1) positioning reference: the radial positioning is carried out by the iron core hole (which is finished) of the motor casing, and the axial positioning is carried out by the lower end face.

2) The clamping mode is as follows: the motor shell is sleeved in the clamp tensioning sleeve and then clamped, and the supporting device moves downwards to give way to the lower spigot and the lower end face.

3) And rotating the rotary cutter tower to rotate, enabling the measuring head to face upwards, measuring the lower end face and establishing a motor casing workpiece coordinate system.

4) And rotating the rotary cutter tower to enable the lower spigot turning tool to move upwards, rotating the workbench, and turning the lower end face and the lower spigot.

5) And the side tool rest moves to the upper end of the motor shell quickly, the rotary tool turret rotates to enable the upper stop lathe tool to face downwards, and the upper end face and the upper stop opening are turned.

6) And stopping the rotation of the workbench, rotating the rotary cutter tower to enable the measuring head to face downwards vertically, and measuring the upper end face and the upper spigot.

7) The side tool rest moves to the lower end of the motor shell quickly, the rotary tool turret rotates to enable the measuring head to face upwards vertically, and the lower end face and the lower spigot are measured.

8) If the measurement is unqualified, correcting the parameters and turning again;

9) if the measurement is qualified, the mechanical arm tightly grips the motor shell and then loosens the clamp, the mechanical arm vertically moves upwards, leaves the clamp, then horizontally moves to the outer side of the machine tool, and the motor shell is placed on the transmission device;

10) the manipulator recaptures the motor casing, transports it to the clamp, positions and clamps it, and begins a new processing cycle.

The technical solution of the invention is realized as follows:

the invention relates to a motor casing inner spigot and end face finish machining vertical lathe, which is characterized by comprising the following components: the device comprises a workbench, a portal frame, a side tool rest, a manipulator mandrel clamp, a supporting device, a rotary tool turret, a motor casing measuring head hydraulic system, a numerical control system and accessories;

the portal frame of the invention comprises: the supporting upright posts, the guide upright posts and the cross beam; the beam, the supporting upright post and the guiding upright post form a rigid portal frame structure; two linear rails and a ball screw are arranged on the cross beam, and the servo motor drives the manipulator to move horizontally; two linear guide rails, a ball screw and a servo motor are arranged on the guide upright post; the front surface of the support upright post is retracted backwards by a distance which is larger than the turning radius of the motor, so that the manipulator can grab the motor shell to move transversely and avoid collision with the support upright post;

the manipulator is arranged on the cross beam; the manipulator moves in two directions, one is driven by the servo motor to move horizontally along the cross beam guide rail, and the other is driven by the servo motor to move up and down along the guide of the linear guide rail in the sliding seat; the jack catch of manipulator installs in the arm lower extreme. The jack catch is removable, adjustable displacement's three-jaw structure, presss from both sides tightly through hydraulic control and relaxs.

The workbench is vertically arranged on a base in the middle of a portal frame; the workbench is driven to rotate by a servo spindle motor through a reduction box and a pair of gears;

the mandrel clamp is an internal expansion type self-centering mandrel clamp, is arranged at the center of a workbench, is coaxial with the rotation center of the workbench, and rotates along with the workbench; the expansion sleeve of the mandrel clamp realizes the clamping and releasing of the motor shell through double-end conical surface positioning, rotary oil distributor and oil cylinder; the radial positioning and clamping device is used for radially positioning and clamping an iron core hole of the motor shell;

the supporting device consists of a plurality of lifting oil cylinders and is used for supporting the motor shell; the lifting oil cylinders are uniformly distributed on a concentric circle with the axis of the mandrel clamp as the circle center; the spindle clamp is used for axially positioning the lower end face of the motor casing, and the support oil cylinder is axially moved out downwards after being clamped by the spindle clamp, so that a turning space is reserved.

The side tool rest is arranged on a guide column guide rail through a sliding seat; the device has two directions of movement, one is driven by a servo motor at the upper end of the upright post to move up and down along a guide rail of the guide upright post, and the other movement is that a servo motor on the sliding seat drives a tool rest to move horizontally through a ball screw; a grating ruler is arranged on the side tool rest and is controlled in a closed loop mode;

the rotary tool turret is a three-station rotary tool turret, is arranged on the front end surface of a side tool rest and is used for mounting a lower spigot lathe tool, an upper spigot lathe tool and a motor casing measuring head;

the motor casing measuring head is a wireless measuring head, is arranged on the rotary cutter tower and is used for measuring the processing dimensional accuracy and form and position tolerance of the lower spigot, the lower end surface, the upper spigot and the upper end surface;

the left end of the beam is lengthened and extends to the transmission device of the motor shell outside the protection cover area of the machine tool.

The axis of the rotary cutter tower is parallel to the horizontal moving direction of the side cutter frame.

Each servo motor is connected with the numerical control system, each oil cylinder is connected with the hydraulic system, and therefore a brand new technical scheme and a processing process of finish machining of the inner spigot and the end face of the motor shell are achieved.

Other components such as numerical control systems, hydraulic systems, chip ejectors, shields, etc. are of conventional design and will not be described in detail herein.

The processing method comprises the following steps:

1. the mechanical handle is used for grabbing the motor shell from a motor shell transmission device outside the machine tool side, moving the motor shell into the machine tool, sleeving the motor shell (also suitable for the motor shell without a stator) provided with the stator into a mandrel clamp, performing radial positioning on a stator inner hole (the stator inner hole is subjected to finish machining), axially supporting the motor shell by a supporting device, performing axial positioning on the lower end face of the motor shell, moving the supporting device downwards after an expansion sleeve of the clamp is tensioned, giving way to a turning space, measuring the position of the lower end face by a motor shell measuring head, and establishing a workpiece coordinate system of the motor shell.

2. And the side tool rest starts to turn the lower end face and the lower spigot, then moves to the upper part quickly, and turns the upper end face and the upper spigot after automatic tool changing.

3. After the turning is finished, the workbench stops, the motor shell measuring head automatically measures each machined surface, and the system can store or print detection data.

4. The manipulator snatchs the motor casing, and the dabber anchor clamps loosen the motor casing after, move the motor casing to the transmission device outside the lathe on.

5. Thus, a machining cycle of the motor casing is completed. The whole process from grabbing to positioning and clamping of the motor shell, turning, measuring, unloading and lifting of the motor shell is automatically completed.

The advantages of the invention are obvious and mainly appear as follows:

1. the invention changes the vertical tool rest into a side tool rest structure, shortens the overhanging of the ram by more than one time when the lower spigot is turned, improves the turning rigidity and improves the dimensional accuracy and the surface roughness of the lower spigot. In addition, when the upper and lower rabbets are turned, the overhanging lengths of the side tool rests are basically consistent, so the dimensional tolerance consistency of the upper and lower rabbets is good;

2. the invention adopts a new clamp design, namely a mandrel tensioning clamp, and the part with the best rigidity of the inner support motor shell, namely the iron core hole, can increase the clamping force without considering the deformation problem and can improve the rotating speed. Therefore, the defects that the clamping force of the motor shell is difficult to select and adjust, the motor shell is large in deformation, the precision is easy to be out of tolerance and the rotating speed is low are overcome;

3. the invention adopts a new motor casing positioning method: namely, the core hole of the motor shell is used for radial positioning, the lower end face is used for axial positioning, and after the clamp is clamped, the lower end face supporting device moves downwards to make up the turning and detection space of the lower spigot and the end face, so that the problems that the lower end face cannot be turned, the lower end face and the lower spigot cannot be measured, and the end face jumping precision of the lower end face cannot be ensured are solved;

4. the invention adopts the workpiece measuring head, can perform online measurement, automatically measure the size tolerance, the total height tolerance, the spigot coaxiality and the end face runout of the spigot of the motor shell, realize the comprehensive detection of each part, and output a detection report, and has high detection speed and finishes the detection in 2 minutes. The existing numerical control vertical lathe is limited by a structure, and a lower spigot cannot be manually measured on line or automatically measured by a measuring head. The off-line measurement can only detect the seam allowance tolerance of each part, and for the coaxiality and end face jump precision measurement, only a three-coordinate measuring machine can be used for carrying out spot inspection (not detected), the detection time is long, and each part cannot be detected, so that the problem which cannot be solved by a motor factory is always solved;

5. the invention adopts the rotary tool turret to change tools, compared with the tool magazine of Shenyang machine tool, the tool magazine has the advantages of short tool changing path, high speed and low cost;

6. the invention adopts the mechanical arm to realize the automatic feeding and discharging of the motor shell, thereby greatly shortening the auxiliary time. The problems of low efficiency and poor safety of the crane during feeding and discharging are solved;

7. the application range of the invention is as follows: the finish machining of the motor shell with the center height of more than 100mm comprises the finish machining of small, medium and large motor series, does not comprise a micro motor, and other similar motor shells. The processing method is suitable for processing the inner spigot motor shell and the outer spigot, and the application range is expanded;

8. one end of the beam is lengthened and extends to the outer side of the machine tool, so that the manipulator can move to the outer side of the machine tool to directly grab the motor shell from the conveying device, and the working efficiency and the carrying safety are improved;

9. the invention adopts the side tool rest structure and the mandrel tensioning clamp, thereby solving the problems that the scrap iron is always left in the motor shell and can not be automatically thrown out, manual cleaning is needed, and the efficiency is influenced;

10. the invention can also adopt a double-machine symmetrical parallel scheme for processing; the effect of the parallel connection of the double motors is shown as follows:

1) the efficiency is the efficiency of two machine tools, and the occupied area is small;

2) the cost is lower than that of two machine tools. Because two upright posts, a mechanical arm and a set of numerical control system are saved;

3) the two machine tools can be operated by one person.

The invention has the advantages of novel structure, simple and convenient processing, convenient use, high working efficiency, high processing precision, high safety and the like, and can generate positive social benefit and obvious economic benefit when being put into the market in large batch.

Drawings

The invention has 9 figures in total, wherein:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a dual-machine symmetrical parallel scheme adopted by the invention;

FIG. 3 is a schematic view of a rotary turret structure when a lower spigot end face is turned;

FIG. 4 is a schematic view of a rotary turret structure for measuring the end face of a lower spigot of the invention;

FIG. 5 is a schematic view of a rotary turret structure of the present invention when turning the upper end surface;

FIG. 6 is a schematic view of a rotary turret structure for measuring the upper and lower end faces of the present invention;

FIG. 7 is a first schematic structural diagram of a conventional motor casing clamp;

FIG. 8 is a schematic structural diagram of a conventional motor casing clamp;

fig. 9 is a third schematic structural diagram of a conventional motor casing clamp.

In the figure: 1. the device comprises a workbench 2, a side tool rest 3, a rotary tool turret 4, a supporting device 5, a mandrel clamp 6, an expansion sleeve 7, a motor casing 8, a transmission device 9, a guide upright post 10, a manipulator 11, a supporting upright post 12, a cross beam 13, a motor casing measuring head 14 and a turning tool.

Detailed Description

Detailed description of the preferred embodiment 1

The concrete embodiment of the invention is shown in figure 1, the motor casing inner spigot and end face finish machining vertical lathe is characterized in that the motor casing inner spigot and end face finish machining vertical lathe comprises: the device comprises a workbench (1), a portal frame, a side tool rest (2), a manipulator (10), a mandrel clamp (5), a rotary tool turret (3), a measuring head (13), a hydraulic system, a numerical control system and accessories;

the portal frame includes: a support column (11), a guide column (9) and a cross beam (12); the beam (12), the supporting upright post (11) and the guide upright post (9) form a rigid door type structure; two linear rails and a ball screw are arranged on the cross beam (12), and the servo motor drives the manipulator (10) to move horizontally; two linear guide rails, a ball screw and a servo motor are arranged on the guide upright post; the front surface of the supporting upright post (11) retracts backwards by a distance larger than the turning radius of the motor, so that the manipulator (10) can grab the motor shell (7) to move transversely to avoid collision with the supporting upright post (11);

the manipulator (10) is arranged on the cross beam (12); the manipulator (10) moves in two directions, one is driven by a servo motor to move horizontally along a guide rail of the cross beam (12), and the other is driven by the servo motor to move up and down under the guidance of a linear guide rail of a ram in the sliding seat; a claw of the manipulator (10) is arranged at the lower end of the arm; the clamping jaw is a replaceable and displacement-adjustable three-jaw structure and is controlled to clamp and release through hydraulic pressure;

the workbench (1) is vertically arranged on a base in the middle of the portal frame; the workbench (1) is driven to rotate by a servo spindle motor through a reduction box and a pair of gears;

the mandrel clamp (5) is an internal expanding type self-centering mandrel clamp, is arranged at the center of the workbench (1), is coaxial with the rotation center of the workbench, and rotates along with the workbench; an expansion sleeve (6) of the mandrel clamp (5) realizes clamping and loosening of a motor shell (7) through double-end conical surface positioning, rotating an oil separator and an oil cylinder; the radial positioning and clamping are used for the iron core hole of the motor shell (7);

the supporting device (4) consists of a plurality of lifting oil cylinders and is used for supporting the motor shell (7); the lifting oil cylinders are uniformly distributed on a concentric circle with the axis of the mandrel clamp (5) as the circle center; the axial positioning is used for the lower end face of the motor shell (7);

the side tool rest (2) is arranged on the guide column guide rail through a sliding seat; the two-direction movement is realized, one is driven by a servo motor at the upper end of the upright post to move up and down along a guide upright post guide rail, and the other is driven by a servo motor on the sliding seat to horizontally move a side tool rest through a ball screw; a grating ruler is arranged on the side tool rest (2) for closed-loop control;

the rotary tool turret (3) is a three-station rotary tool turret, is arranged on the front end face of the side tool rest (2) and is used for mounting a lower spigot turning tool, an upper spigot turning tool and a motor casing measuring head (13);

the motor casing measuring head (13) is a wireless measuring head, is arranged on the rotary cutter tower and is used for measuring the machining size precision and form and position tolerance of the lower spigot, the lower end face, the upper spigot and the upper end face.

A plurality of supporting devices (4) which can move up and down and are used for axially positioning the motor shell (7) are uniformly distributed on the upper part of the workbench (1).

One end of the beam (12) is lengthened and extends to the transmission device (8) outside the protective cover area of the machine tool.

The rotary cutter tower (3) is arranged at the end of the side cutter frame (2), and the axis of the rotary cutter tower is parallel to the horizontal moving direction of the side cutter frame (2).

Detailed description of the preferred embodiment 2

The specific embodiment of the invention is shown in figure 2, and the invention can also adopt a double-machine symmetrical parallel scheme, namely, double workbenches, double guide columns, double-side tool rests (2) and double rotary turrets are symmetrically distributed, and a lengthened cross beam (12) is arranged on the two guide columns; the manipulator (10) is arranged on the cross beam (12), and the manipulator (10) can cross the two workbenches to grab the motor shell back and forth; the transfer device is mounted between the two tables.

The other structural design is the same as embodiment 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and all persons skilled in the art should be able to cover the technical solutions of the present invention and the equivalent alternatives or modifications thereof within the technical scope of the present invention.

Claims

1. A motor casing inside spigot and end face finish machining vertical lathe comprises: the device comprises a workbench (1), a mandrel clamp (5), a manipulator (10), a portal frame, a hydraulic system, a numerical control system and accessories;

the manipulator (10) is arranged on the portal frame; the manipulator (10) moves in two directions, one is driven by a servo motor to move horizontally along a guide rail of the cross beam (12), and the other is driven by the servo motor to move up and down under the guidance of a linear guide rail of a ram in the sliding seat; a clamping jaw of the manipulator (10) is arranged at the lower end of the arm, is of a replaceable and displacement-adjustable three-jaw structure, and is clamped and loosened through hydraulic control;

each servo motor is connected with the numerical control system, and each oil cylinder is connected with the hydraulic system;

the motor casing inner spigot and end face finish machining vertical lathe is characterized by further comprising: the device comprises a supporting device (4), a side tool rest (2), a rotary tool turret (3) and a motor casing measuring head (13);

the supporting device (4) consists of a plurality of lifting oil cylinders and is used for supporting the motor shell (7); the lifting oil cylinders are uniformly distributed on a concentric circle with the axis of the mandrel clamp (5) as the circle center;

the side tool rest (2) is arranged on a guide rail of the guide upright post through a sliding seat; the two-direction movement is realized, one is driven by a servo motor at the upper end of the upright post to move up and down along a guide upright post guide rail, and the other is driven by a servo motor on the sliding seat to horizontally move a side tool rest through a ball screw; a grating ruler is arranged on the side tool rest (2) for closed-loop control;

the motor casing measuring head (13) is a wireless measuring head, is arranged on the rotary cutter tower and is used for measuring the lower stop

The processing dimensional accuracy and form and position tolerance of the opening, the lower end surface, the upper spigot and the upper end surface;

the left end of a beam (12) of the portal frame is lengthened, extends out of a protective cover area of the lathe and is positioned on a transmission device (8) of the motor shell (7).

2. The motor casing inside spigot and end face finishing vertical lathe according to claim 1, characterized in that the axis of the rotary turret (3) is parallel to the horizontal moving direction of the side tool rest (2).

3. The method for machining the motor casing inner spigot and end face finish machining vertical lathe as claimed in claim 1, wherein the method comprises the following steps:

1) positioning reference: the supporting device is lifted to an initial state, the iron core hole of the motor shell (7) which is subjected to finish machining is used for radial positioning, and the lower end face of the supporting device is used for axial positioning;

2) the clamping mode is as follows: the motor shell (7) is sleeved in the clamp tensioning sleeve and then clamped, and the supporting device moves downwards to give way to the lower spigot and the lower end face;

3) rotating the rotary turret (3) to enable the measuring head to face upwards, measuring the lower end face and establishing a workpiece coordinate system;

4) the rotary cutter tower (3) is rotated to enable the lower spigot turning tool to move upwards, the workbench rotates, and the lower end face and the lower inner spigot are turned;

5) the side tool rest (2) moves to the upper end of the motor rapidly, the rotary tool turret (3) rotates to enable the upper stop lathe tool to face downwards, and the upper end face and the upper inner stop are turned;

6) the workbench stops rotating, the rotary cutter tower (3) rotates to enable the measuring head to face downwards vertically, and the upper end face and the upper stop opening are measured;

7) the side tool rest (2) moves to the lower end of the motor quickly, the rotary turret (3) rotates to enable the measuring head to face upwards vertically, and the lower end face and the lower spigot are measured;

9) if the measurement is qualified, the mechanical arm (10) tightly grips the motor shell (7) and then loosens the clamp, the mechanical arm (10) vertically moves upwards, leaves the clamp, then horizontally moves to the outer side of the lathe, and the motor shell is placed on the transmission device;

10) the manipulator (10) grabs the next motor casing (7) again, transports to the clamp, positions and clamps, and starts a new processing cycle.