CN213135057U

CN213135057U - Full-automatic rotor finishing machine

Info

Publication number: CN213135057U
Application number: CN202021290960.3U
Authority: CN
Inventors: 徐晓军
Original assignee: Jiangsu Xiandian Machinery Co ltd
Current assignee: Jiangsu Xiandian Machinery Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-05-07
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a full-automatic rotor finishing machine, which is provided with an automatic rotor placing mechanism, a rotor positioning mechanism, a cutter moving platform and a double-cutter head fixing device which are arranged on a workbench; the automatic rotor placing mechanism comprises a front V-shaped frame, an iron core lifting supporting plate and a rear V-shaped frame which are sequentially arranged; the cutter moving platform is arranged on the fourth sliding rail in a sliding mode, and a double-cutter-head fixing device is arranged at the position, corresponding to the fine turning position of the rotor, of the cutter moving platform; and a turning tool is fixed on the double-tool-bit fixing device. The position of the V-shaped frame and the position of the rear top of the utility model are adjusted by the servo motor, stepless adjustment is realized, the adjustable range is large, the motor rotor with brushes in different sizes is suitable, and the commutator and the iron core can be turned simultaneously; the application range is greatly increased, manual adjustment is not needed, the motor is particularly suitable for production of small-batch special motors frequently changed in shape, and only one motor is needed.

Description

Full-automatic rotor finishing machine

Technical Field

The utility model belongs to the technical field of little direct current motor full-automatic production line, in particular to full-automatic rotor finish turning machine.

Background

The motor mainly comprises a rotor and a stator, is an important device for converting electric energy into mechanical energy, is a power source of a plurality of automatic devices, and is widely applied to various industries. The rotor finishing machine is used as a common machine for rotor processing and plays an irreplaceable role in production and life. The existing rotor commutator finishing machine in the market has the advantages that the V-shaped frame and the rear top are manually adjusted, the adjusting range is limited, the automation degree is low, the motor rotor is widely applied, and the demand of China on the motor rotor is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect that prior art exists, providing one kind through the servo motor adjustment, infinitely variable control, but adjustable range is big, is applicable to the full-automatic rotor finish turning machine of brush electric motor rotor of equidimension not.

Realize the utility model discloses the technical scheme of purpose is: a full-automatic rotor finishing machine is provided with an automatic rotor placing mechanism, a rotor positioning mechanism, a cutter moving platform and a double-cutter-head fixing device, wherein the automatic rotor placing mechanism, the rotor positioning mechanism, the cutter moving platform and the double-cutter-head fixing device are arranged on a workbench; the automatic rotor placing mechanism comprises a front V-shaped frame, an iron core lifting supporting plate and a rear V-shaped frame which are sequentially arranged; the rotor positioning mechanism comprises a front V-shaped frame adjusting electric cylinder, a rear top automatic adjusting electric cylinder and a direct-pressure device; the front V-frame adjusting electric cylinder and the rear V-frame adjusting electric cylinder are respectively and correspondingly connected with a front V frame and a rear V frame of the automatic rotor placing mechanism, are respectively arranged on the corresponding first sliding rails in a sliding manner and are connected with the driving ends of the corresponding V-frame driving motors; the front V frame and the rear V frame are arranged on the corresponding second slide rails in a sliding manner; the rear top automatic adjusting electric cylinder is arranged corresponding to the outer side of the front V frame or the rear V frame; the cylinder body of the rear ejection automatic adjusting electric cylinder is fixed on a pressing arm transmission seat fixed on the workbench, and a piston rod is fixed with an ejection block for tightly ejecting the rotor; the vertical pressing device is arranged at a position corresponding to the upper part of the automatic rotor placing mechanism; the cutter moving platform is connected with a double-cutter-head fixing device arranged corresponding to the fine turning position of the rotor through a translational sliding mechanism; and a turning tool is fixed on the double-tool-bit fixing device.

The direct pressing device in the technical scheme comprises a direct pressing cylinder, a lower pressing component mounting plate, a driving motor and a driving mechanism; the downward pressing component mounting plate is fixed on the workbench through a pressing arm bracket; the straight pressure cylinder is fixed on the lower pressure component mounting plate through a cylinder fixing seat, and a piston rod of the straight pressure cylinder is connected with a lower pressure bottom plate which is arranged in the third slide rail in a sliding manner; the driving motor is fixedly arranged on the lower pressing component mounting plate through a motor base, and a rotating shaft of the driving motor is fixedly provided with a driving wheel; a first multi-groove belt idler is fixed on one side of the lower end of the lower pressing bottom plate through an idler fixing plate, and a second multi-groove belt idler is connected on the other side of the lower pressing bottom plate through a tensioning wheel support; the axes of the driving wheel, the first multi-groove belt idler wheel and the second multi-groove belt idler wheel are parallel, and the driving wheel, the first multi-groove belt idler wheel and the second multi-groove belt idler wheel are distributed in a shape like a Chinese character 'pin' and are driven by a belt; the middle section of the tensioning wheel support is connected with a piston rod of the tensioning cylinder; and the cylinder body of the tensioning cylinder is fixed with a tailstock of the tensioning cylinder fixed on the lower pressing bottom plate.

According to the technical scheme, the iron core lifting supporting plate of the automatic rotor placing mechanism is arranged on an iron core lifting plate which is fixed between two first sliding rails and is perpendicular to the first sliding rails; the lower end of the iron core lifting plate is fixed with the end of a piston rod, extending out of the table top of the workbench, of a lifting cylinder fixed at the bottom of the workbench.

According to the technical scheme, a fifth sliding rail is fixedly arranged on the pressure arm transmission seat; a pressure arm support is arranged on the fifth sliding rail in a sliding manner; the downward pressing component mounting plate is fixed on the pressing arm bracket; the pressure arm support is connected with a piston rod of the lower pressure cylinder through a pressure arm cylinder connecting seat; and the cylinder body of the pressing cylinder is fixed on the workbench.

According to the technical scheme, a dust hood is arranged above the automatic rotor placing mechanism; the dust hood is connected to the dust collection rotating shaft through the dust hood connecting block; two ends of the dust collection rotating shaft are sleeved in corresponding bearing seats fixed on the table top of the workbench, and the dust collection rotating shaft is connected to the piston rod end of the dust collection cover overturning cylinder through a swing rod and a cylinder connecting block; the cylinder body of the dust hood overturning cylinder is fixed on the table surface of the workbench or on the pressing arm transmission seat.

According to the technical scheme, the first sliding rail, the second sliding rail, the third sliding rail and the fourth sliding rail are respectively covered with the corresponding telescopic protective covers.

According to the technical scheme, the funnel is arranged at the bottom of the workbench; the funnel is arranged at the position below the automatic rotor placing mechanism.

According to the technical scheme, the downward pressing component protective cover is arranged on the downward pressing component mounting plate.

In the technical scheme, a limiting bracket fixed on the pressure arm transmission seat is arranged below the pressure arm bracket; and the limiting support is in threaded connection with a limiting screw.

The cutter motion platform in the technical scheme comprises a sliding table upper plate and a sliding table bottom plate; the sliding table upper plate is connected with the sliding table bottom plate through a sliding block and a sixth sliding rail; the translational sliding mechanism comprises a drag chain, a cutter movement driving motor, a driving wheel, a driving driven wheel, a driving belt, a screw rod seat, a ball screw and a screw rod sleeve; one end of the drag chain is fixed on the workbench, and the other end of the drag chain is connected with the motor fixing plate or the cutter movement driving motor; the cutter movement driving motor is fixed on the motor fixing plate, and a rotating shaft of the cutter movement driving motor is connected with the driving wheel; the driving driven wheel is connected with the driving wheel through a driving belt; the ball screw is arranged in parallel with the sixth sliding rail, and one end part of the ball screw is fixed with the driving driven wheel and penetrates through the screw seat; the screw rod sleeve is fixed in the middle of the lower part of the upper plate of the sliding table and is in threaded connection with the ball screw; the bottom of the sliding table bottom plate is arranged on the fourth sliding rail in a sliding mode through a sliding block and is connected with a piston rod of a sliding table driving cylinder fixed on the workbench.

According to the technical scheme, the bottom of the workbench is provided with the adjustable supporting legs.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) the position of the V-shaped frame and the position of the rear top of the utility model are adjusted by the servo motor, stepless adjustment is realized, the adjustable range is large, the motor rotor with brushes in different sizes is suitable, and the commutator and the iron core can be turned simultaneously; the application range is greatly increased, manual adjustment is not needed, the motor is particularly suitable for production of small-batch special motors frequently changed in shape, and only one motor is needed.

(2) The utility model discloses an all be covered with corresponding flexible protection casing on first slide rail, second slide rail, third slide rail and the fourth slide rail, protect operator's personal safety.

(3) The utility model discloses the below of pressure arm support is equipped with the spacing support that is fixed in on the pressure arm transmission seat, and threaded connection has stop screw on the spacing support, plays and carries on spacingly to the upper and lower of pressure arm support, prevents to press.

(4) The utility model discloses an install down on the subassembly mounting panel and push down the subassembly safety cover, avoid the dust to push down the pollution of subassembly on the one hand, on the other hand plays the safeguard effect to operator's personal safety.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

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

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a front view of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a left side view of FIG. 3;

fig. 6 is a partial first perspective view of the present invention;

fig. 7 is a second perspective view of a portion of the present invention;

fig. 8 is a partial third perspective view of the present invention.

Detailed Description

Referring to fig. 1 to 8, the utility model has an automatic rotor placing mechanism 2, a rotor positioning mechanism, a cutter moving platform 3 and a double-cutter head fixing device 4 which are arranged on a workbench 1; the automatic rotor placing mechanism 2 comprises a front V frame 5, an iron core lifting supporting plate 28 and a rear V frame 6 which are sequentially arranged; the rotor positioning mechanism comprises a front V-shaped frame adjusting electric cylinder 7, a rear V-shaped frame adjusting electric cylinder 8, a rear top automatic adjusting electric cylinder 9 and a direct-pressure device 10; the front V-frame adjusting electric cylinder 7 and the rear V-frame adjusting electric cylinder 8 are respectively and correspondingly connected with the front V-frame 5 and the rear V-frame 6 of the automatic rotor placing mechanism 2, are respectively arranged on the corresponding first slide rails 11 in a sliding manner, and are connected with the driving ends of the corresponding V-frame driving motors 43; the front V frame 5 and the rear V frame 6 are arranged on the corresponding second slide rails 12 in a sliding manner; the rear top automatic adjusting electric cylinder 9 is arranged corresponding to the outer side of the front V frame 5 or the rear V frame 6; the cylinder body of the rear-jacking automatic adjusting electric cylinder 9 is fixed on a pressure arm transmission seat 13 fixed on the workbench 1, and a piston rod is fixed with a jacking block 14 for jacking the rotor; the vertical compression device 10 is arranged corresponding to the upper position of the automatic rotor placing mechanism 2; the cutter moving platform 3 is connected with a double-cutter-head fixing device 4 which is arranged corresponding to the fine turning position of the rotor through a translational sliding mechanism; and a turning tool is fixed on the double-tool bit fixing device 4.

The direct pressing device 10 comprises a direct pressing cylinder 15, a lower pressing component mounting plate 16, a driving motor 17 and a driving mechanism; the lower pressing component mounting plate 16 is fixed on the workbench 1 through a pressing arm bracket 25; the straight pressure cylinder 15 is fixed on the lower pressure component mounting plate 16 through a cylinder fixing seat 29, and a piston rod of the straight pressure cylinder 15 is connected with a lower pressure bottom plate 21 which is arranged in the third slide rail 20 in a sliding manner; the driving motor 17 is fixedly arranged on the lower pressing component mounting plate 16 through a motor base, and a driving wheel 18 is fixed on a rotating shaft of the driving motor 17; a first multi-groove belt idle wheel 19 is fixed on one side of the lower end of the lower pressing bottom plate 21 through an idle wheel fixing plate 37, and a second multi-groove belt idle wheel 39 is connected on the other side of the lower pressing bottom plate through a tension wheel bracket 38; the axes of the driving wheel 18, the first multi-groove belt idler wheel 19 and the second multi-groove belt idler wheel 39 are parallel, and the three are distributed in a shape like a Chinese character 'pin' and are driven by a belt 47; the middle section of the tensioning wheel bracket 38 is connected with the piston rod of the tensioning cylinder 40; the cylinder body of the tensioning cylinder 40 is fixed with a tensioning cylinder tailstock 41 fixed on the lower pressing bottom plate 21, so that the tensioning cylinder 40 is suitable for rotors with different specifications, and the tensioning wheel support 38 can be controlled by the tensioning cylinder 40 to achieve the purpose of tightly pressing the rotors.

The iron core lifting supporting plate 28 of the automatic rotor placing mechanism 2 is arranged on an iron core lifting plate 23 which is fixed between the two first slide rails 11 and is arranged vertically to the first slide rails 11; the lower end of the iron core lifting plate 23 is fixed with the end of a piston rod of a lifting cylinder 42 fixed at the bottom of the workbench 1 and extending out of the table top of the workbench 1. When descending, on one hand, the rotor is convenient to take and place, and on the other hand, the rotor is suitable for the specifications of rotors with different diameters.

A fifth slide rail 24 is fixedly arranged on the pressure arm transmission seat 13; a pressure arm bracket 25 is slidably arranged on the fifth slide rail 24; the pressing component mounting plate 16 is fixed on the pressing arm bracket 25; the pressure arm bracket 25 is connected with a piston rod of the lower pressure cylinder 46 through a pressure arm cylinder connecting seat; the cylinder body of the pressing cylinder 46 is fixed on the workbench 1; a hold-down assembly protective cover 44 is mounted on the hold-down assembly mounting plate 16. A limiting bracket 36 fixed on the pressure arm transmission seat 13 is arranged below the pressure arm bracket 25; the limit bracket 36 is in threaded connection with a limit screw 45.

A dust hood 30 is arranged above the automatic rotor placing mechanism 2; the dust hood 30 is connected to a dust collection rotating shaft 32 through a dust hood connecting block 31; two ends of the dust collection rotating shaft 32 are sleeved in corresponding bearing seats 62 fixed on the table top of the workbench 1, and the dust collection rotating shaft 32 is connected to the piston rod end of the dust collection cover overturning cylinder 35 through the swing rod 33 and the cylinder connecting block 34; the cylinder body of the dust hood overturning cylinder 35 is fixed on the table surface of the workbench 1 or the pressing arm transmission seat 13. The bottom of the working table 1 is provided with a funnel 60; the hopper 60 is disposed at a position below the automatic rotor placement mechanism 2. The dust hood 30 and the funnel 60 are arranged to reduce dust scattering into the space on one hand and collect cut chips on the other hand.

The first slide rail 11, the second slide rail 12, the third slide rail 20 and the fourth slide rail 22 are all covered with corresponding telescopic protective covers 26, so that accidental injury of an operator is avoided, and dust pollution to the slide rails is reduced.

The cutter moving platform 3 comprises a sliding table upper plate 48 and a sliding table bottom plate 49; the sliding table upper plate 48 and the sliding table bottom plate 49 are connected with a sixth sliding rail 59 through a sliding block; the translational sliding mechanism comprises a drag chain 50, a cutter movement driving motor 51, a driving wheel 52, a driving driven wheel 53, a driving belt 54, a screw rod seat 55, a ball screw 56 and a screw rod sleeve 57; one end of the drag chain 50 is fixed on the workbench 1, and the other end is connected with the motor fixing plate 58 or the cutter movement driving motor 51; the cutter movement driving motor 51 is fixed on the motor fixing plate 58, and the rotating shaft of the cutter movement driving motor is connected with the driving wheel 52; the driven driving wheel 53 is connected with the driving wheel 52 through a driving belt 54; the ball screw 56 is arranged in parallel with the sixth slide rail 59, and one end part of the ball screw 56 is fixed with the driven wheel 53 and penetrates through the screw seat 55; the screw rod sleeve 57 is fixed in the middle of the lower part of the sliding table upper plate 48 and is in threaded connection with the ball screw 56; the bottom of the sliding table bottom plate 49 is arranged on the fourth sliding rail 22 in a sliding mode through a sliding block and is connected with a piston rod of a sliding table driving cylinder 61 fixed on the workbench 1, so that the two-dimensional movement of a cutter on a plane is realized, and the sliding table bottom plate is suitable for different finish turning positions and finish turning depths.

The utility model discloses a theory of operation does: the rotor is put into iron core lift layer board 28 by rotor automatic placement mechanism 1, lift cylinder 42 controls the height of rotor, preceding V frame adjustment electric jar 7 and back V frame adjustment electric jar 8 adjust preceding V frame 5 and the position of back V frame, make it support the rotor relevant position respectively, and back top automatically regulated electric jar 9 withstands rotor one of them end, straight pressure device 10 descends and compresses tightly the rotor through pushing down the subassembly, this device can be according to the different rotor automatic adjustment support positions of putting into, straight pressure device pushes down the rotor and drives rotatoryly through driving motor 17, cutter motion platform 3 drives double knives fixing device 4, cut commutator and rotor core respectively.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a full-automatic rotor car polisher which characterized in that: the automatic rotor placing device is provided with an automatic rotor placing mechanism (2), a rotor positioning mechanism, a cutter moving platform (3) and a double-cutter-head fixing device (4), wherein the automatic rotor placing mechanism, the rotor positioning mechanism, the cutter moving platform and the double-cutter-head fixing device are arranged on a workbench (1); the automatic rotor placing mechanism (2) comprises a front V frame (5), an iron core lifting supporting plate (28) and a rear V frame (6) which are sequentially arranged; the rotor positioning mechanism comprises a front V-frame adjusting electric cylinder (7), a rear V-frame adjusting electric cylinder (8), a rear top automatic adjusting electric cylinder (9) and a direct-pressing device (10); the front V-frame adjusting electric cylinder (7) and the rear V-frame adjusting electric cylinder (8) are respectively and correspondingly connected with a front V frame (5) and a rear V frame (6) of the automatic rotor placing mechanism (2), are respectively arranged on the corresponding first sliding rails (11) in a sliding manner and are connected with the driving ends of the corresponding V-frame driving motors (43); the front V frame (5) and the rear V frame (6) are arranged on the corresponding second sliding rails (12) in a sliding manner; the rear top automatic adjusting electric cylinder (9) is arranged corresponding to the outer side of the front V frame (5) or the rear V frame (6); the cylinder body of the rear top automatic adjusting electric cylinder (9) is fixed on a pressure arm transmission seat (13) fixed on the workbench (1), and a piston rod is fixed with a top block (14) for tightly jacking the rotor; the vertical compression device (10) is arranged corresponding to the upper position of the automatic rotor placing mechanism (2); the cutter moving platform (3) is connected with a double-cutter-head fixing device (4) arranged at a position corresponding to the fine turning position of the rotor through a translational sliding mechanism; and a turning tool is fixed on the double-tool-bit fixing device (4).

2. The full-automatic rotor finishing machine of claim 1, characterized in that: the direct pressing device (10) comprises a direct pressing cylinder (15), a lower pressing component mounting plate (16), a driving motor (17) and a driving mechanism; the downward pressing component mounting plate (16) is fixed on the workbench (1) through a pressing arm bracket (25); the straight pressure cylinder (15) is fixed on the lower pressure component mounting plate (16) through a cylinder fixing seat (29), and a piston rod of the straight pressure cylinder (15) is connected with a lower pressure bottom plate (21) which is arranged in the third slide rail (20) in a sliding manner; the driving motor (17) is fixedly arranged on the lower pressing component mounting plate (16) through a motor base, and a driving wheel (18) is fixed on a rotating shaft of the driving motor (17); one side of the lower end of the lower pressing bottom plate (21) is fixedly provided with a first multi-groove belt idle wheel (19) through an idle wheel fixing plate (37), and the other side of the lower end of the lower pressing bottom plate is connected with a second multi-groove belt idle wheel (39) through a tensioning wheel bracket (38); the axes of the driving wheel (18), the first multi-groove belt idler wheel (19) and the second multi-groove belt idler wheel (39) are parallel, and the three are distributed in a shape like a Chinese character 'pin' and are transmitted by a belt (47); the middle section of the tensioning wheel support (38) is connected with a piston rod of a tensioning cylinder (40); and the cylinder body of the tensioning cylinder (40) is fixed with a tensioning cylinder tailstock (41) fixed on the lower pressing bottom plate (21).

3. The full-automatic rotor finishing machine of claim 2, characterized in that: an iron core lifting supporting plate (28) of the automatic rotor placing mechanism (2) is arranged on an iron core lifting plate (23) which is fixed between the two first sliding rails (11) and is perpendicular to the first sliding rails (11); the lower end of the iron core lifting plate (23) is fixed with the end of a piston rod, which is fixed at the bottom of the workbench (1) and extends out of the table top of the workbench (1), of a lifting cylinder (42).

4. The full-automatic rotor finishing machine of claim 2 or 3, characterized in that: a fifth sliding rail (24) is fixedly arranged on the pressure arm transmission seat (13); a pressure arm bracket (25) is arranged on the fifth slide rail (24) in a sliding manner; the downward pressing component mounting plate (16) is fixed on the pressing arm bracket (25); the pressure arm support (25) is connected with a piston rod of the lower pressure cylinder (46) through a pressure arm cylinder connecting seat; the cylinder body of the pressing cylinder (46) is fixed on the workbench (1).

5. The full-automatic rotor finishing machine of claim 3, characterized in that: a dust hood (30) is arranged above the automatic rotor placing mechanism (2); the dust hood (30) is connected to the dust collection rotating shaft (32) through a dust hood connecting block (31); two ends of the dust collection rotating shaft (32) are sleeved in corresponding bearing seats (62) fixed on the table top of the workbench (1), and the dust collection rotating shaft (32) is connected to the piston rod end of the dust collection cover overturning cylinder (35) through a swing rod (33) and a cylinder connecting block (34); the cylinder body of the dust hood overturning cylinder (35) is fixed on the table surface of the workbench (1) or on the pressure arm transmission seat (13).

6. The full-automatic rotor finishing machine of claim 3, characterized in that: the first slide rail (11), the second slide rail (12), the third slide rail (20) and the fourth slide rail (22) are all covered with corresponding telescopic protective covers (26).

7. The full-automatic rotor finishing machine of claim 4, characterized in that: a funnel (60) is arranged at the bottom of the workbench (1); the funnel (60) is arranged at the position below the automatic rotor placing mechanism (2).

8. The full-automatic rotor finishing machine of claim 2 or 3, characterized in that: and a pressing component protective cover (44) is arranged on the pressing component mounting plate (16).

9. The full-automatic rotor finishing machine of claim 4, characterized in that: a limiting bracket (36) fixed on the pressure arm transmission seat (13) is arranged below the pressure arm bracket (25); and the limiting support (36) is in threaded connection with a limiting screw (45).

10. The full-automatic rotor car refiner of claim 1, 2 or 3, characterized in that: the cutter moving platform (3) comprises a sliding table upper plate (48) and a sliding table bottom plate (49); the sliding table upper plate (48) is connected with the sliding table bottom plate (49) through a sliding block and a sixth sliding rail (59); the translational sliding mechanism comprises a drag chain (50), a cutter movement driving motor (51), a driving wheel (52), a driving driven wheel (53), a driving belt (54), a screw rod seat (55), a ball screw rod (56) and a screw rod sleeve (57); one end of the drag chain (50) is fixed on the workbench (1), and the other end of the drag chain is connected with a motor fixing plate (58) or a cutter movement driving motor (51); the cutter movement driving motor (51) is fixed on the motor fixing plate (58), and the rotating shaft of the cutter movement driving motor is connected with the driving wheel (52); the driven driving wheel (53) is connected with the driving wheel (52) through a driving belt (54); the ball screw (56) is arranged in parallel with the sixth sliding rail (59), and one end part of the ball screw (56) is fixed with the driving driven wheel (53) and penetrates through the screw seat (55); the screw rod sleeve (57) is fixed in the middle of the lower part of the sliding table upper plate (48) and is in threaded connection with the ball screw (56); the bottom of the sliding table bottom plate (49) is arranged on the fourth sliding rail (22) in a sliding mode through a sliding block and is connected with a piston rod of a sliding table driving cylinder (61) fixed on the workbench (1).