CN112792371B

CN112792371B - Turning center with linkage interlocking double-turret control

Info

Publication number: CN112792371B
Application number: CN202110029195.2A
Authority: CN
Inventors: 魏文龙; 张立新; 陈闯
Original assignee: Jiangsu Bosunman Industrial Equipment Co ltd
Current assignee: Jiangsu Bosunman Industrial Equipment Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2022-05-24
Anticipated expiration: 2041-01-11
Also published as: CN112792371A

Abstract

The invention discloses a turning center with linkage interlocking double-turret control. The cutter tower and the cutter tower are symmetrically distributed on the upper surface of the base, the main shaft fixing seat is fixedly connected with the upper surface of the base, the main shaft fixing seat is positioned on the middle point of a connecting line of the cutter tower and the cutter tower, the belt pulley is rotatably connected with the main shaft fixing seat, an output shaft of the main motor is connected with the speed change mechanism, an output shaft of the speed change mechanism, which is far away from one end of the main motor, is sleeved with the belt pulley, and the belt pulley are rotatably connected with the belt pulley.

Description

Turning center with linkage interlocking double-turret control

Technical Field

The invention relates to the technical field of machine tool equipment, in particular to a turning center with linkage interlocking double-turret control.

Background

The turning center controlled by the double tool turrets is a multifunctional high-efficiency machine tool integrating turning, milling and hole turning, and is suitable for multi-process machining. The existing turning center controlled by double turrets integrates tool changing and processing processes, and tool changing needs to be set manually, so that workpieces and tools are easily damaged due to manual misoperation, and the processing precision is reduced; in addition, in the traditional turning process, the rotating speeds of workpieces provided by the processing procedures in different scenes are the same, and the processing efficiency is not favorably improved.

The invention provides a turning center with linkage interlocking double-tool-turret control, which can separate a processing process from a tool changing step, and effectively avoids unnecessary processing loss caused by manual misjudgment and mistaken touch; in addition, the invention is provided with a speed change mechanism, and different rotating speeds can be correspondingly switched in different processing scenes, so that the turning efficiency is improved.

Disclosure of Invention

The invention aims to provide a turning center with linkage interlocking double-turret control, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: turning center with two sword tower control of linkage interlocking, including the base, a sword tower, No. two sword towers, a belt pulley, No. two belt pulleys, a belt, speed change mechanism, main motor and main shaft fixed seat part, a sword tower and No. two sword tower symmetric distribution in base upper surface, main shaft fixing base fixed connection base upper surface, the main shaft fixing base is located the mid point of a sword tower and No. two sword tower lines, a belt pulley rotates connects the main shaft fixing base, main motor output shaft speed change mechanism, the output shaft cover that main motor one end was kept away from to speed change mechanism is equipped with No. two belt pulleys, rotate on a belt pulley and No. two belt pulleys and be connected a belt. The speed change mechanism is arranged to automatically switch corresponding rotating speeds according to different processing scenes, so that the processing precision is guaranteed, the processing speed is increased, and the quality of turning is greatly improved.

Furthermore, a sword tower all is equipped with No. two sword towers and turns to locking mechanical system, turn to locking mechanical system and include sleeve, cylinder, No. one gear, No. two gears, a motor, carousel, No. two carousels, bracing piece and cutter part. The steering locking mechanism is arranged to separate a tool changing step from a machining process, linkage locking control of the double-tool tower in the turning process is achieved, unnecessary machining loss caused by manual misjudgment and mistouch is avoided, and turning efficiency is guaranteed. The utility model discloses a sleeve side wall fixed connection base upper surface, cylinder fixed connection sleeve bottom, cylinder output shaft stretches into sleeve inside from sleeve bottom and rotates No. one and connect a gear one end, No. one the carousel of cylinder one side fixed connection is kept away from to a gear, No. two the carousel is the ring form, No. two carousel side fixed connection sleeve inner wall, No. one the sleeve inner wall of carousel side sliding connection, No. one the carousel is parallel with No. two carousels, No. one gear one side fixed connection cutter is kept away from to a carousel, No. two gears of motor output shaft fixed connection, No. one motor output shaft rotates joint support pole one end, No. one motor one end fixed connection sleeve inner wall is kept away from to the bracing piece, No. one gear and No. two gear engagement.

Furthermore, be equipped with link gear in No. two carousels, link gear includes the arc oil storage chamber, the iron plate, the magnetic path, oil pipe, No. two sleeves, the push rod, rack and No. three gear parts. The linkage mechanism aims to link the speed change mechanism and the steering locking mechanism and is a main linkage part for realizing different rotating speeds in different processing scenes. Inside No. two carousels are arranged in to arc oil storage chamber, arc oil storage chamber one end is closed, blind end one side fixed connection oil pipe is kept away from to arc oil storage chamber, arc oil storage chamber radian and carousel rotate the distance radian that the cutter passed through when 180 equal, arc oil storage chamber enclosed section is equipped with the iron plate, the sealed sliding connection of iron plate side and arc oil storage indoor wall, the cutter bottom is equipped with the magnetic path in a carousel junction, the magnetic path is connected with iron plate magnetic force, No. two sleeves of arc oil storage chamber one end fixed connection are kept away from to oil pipe, be equipped with the push rod in No. two sleeves, oil pipe one end fixed connection rack is kept away from to the push rod, the rack is kept away from push rod one end and is stretched into speed change mechanism, the rack is inside No. three gear engagement at speed change mechanism.

Further, the speed change mechanism comprises a box body, a third belt pulley, a fourth belt pulley, a second belt, a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a screw rod, a sliding block, a first connecting rod, a second connecting rod, a first ring, a second ring, a third sleeve, a fourth sleeve, a first stop block, a second stop block, a fourth gear and a fifth gear part, wherein one end of the first rotating shaft is fixedly connected with the main motor, the axis of the second rotating shaft is arranged on an extension line of the axis of the first rotating shaft, one end of the second rotating shaft extends into the box body to be slidably connected with the third sleeve, the fourth gear is sleeved on the third sleeve, one end of the third sleeve, far away from the second rotating shaft, extends out of one end of the box body, far away from the main motor, and is fixedly connected with the second belt pulley, the third belt pulley is sleeved on the first rotating shaft, one end of the fourth sleeve is rotatably connected with the inner wall of the box body, and the fourth belt pulley is sleeved on the fourth sleeve, the third belt pulley and the fourth belt pulley are rotatably connected with a second belt, one end of a third rotating shaft is slidably connected with the inner wall of a fourth sleeve, the axis of the fourth rotating shaft is arranged on the extension line of the third rotating shaft, one end of the fourth rotating shaft, which is far away from the third rotating shaft, is fixedly connected with a fifth gear, the fourth gear is meshed with the fifth gear, one end of a screw is rotatably connected with the inner wall of a box body, the other end of the screw is fixedly connected with the third gear, a first hole is arranged in the middle of a slider, an internal thread is arranged in the first hole, the screw passes through the first hole to be matched with the internal thread, one side, which is close to the second rotating shaft, of the slider is fixedly connected with one end of a first connecting rod, one end, which is far away from the slider, is fixedly connected with a first ring, the first ring is sleeved on the second rotating shaft, a first stop block is arranged at the contact position of the first ring and the second rotating shaft, and one side, which is close to the third rotating shaft, is fixedly connected with one end of a second connecting rod, no. two rings of slider one end fixed connection are kept away from to No. two connecting rods, No. two ring covers are established in No. three pivots, No. two rings are equipped with No. two dogs with No. three pivot contact positions, the position that a pivot and No. two pivots are close to is equipped with intermeshing's tooth respectively, No. three pivots are equipped with intermeshing's tooth respectively with No. four pivot positions that are close to.

Furthermore, be equipped with the spacing groove in No. three sleeves and No. four sleeves, be equipped with spacing arch on No. two pivots and No. three pivots, spacing arch and spacing groove sliding contact in the spacing inslot. The purpose that spacing groove, spacing arch set up is in order to play the restriction to the motion range of No. two pivots, No. three pivots to No. three sleeves, No. four sleeves.

Furthermore, the diameter of the fifth gear is 1.5-3 times of the diameter of the fourth gear, and the meshing effect of the fifth gear and the fourth gear is a key point for realizing switching of different rotating speeds.

Compared with the prior art, the invention has the following beneficial effects: the invention relates to a turning center with linkage interlocking double-turret control

1. The speed change mechanism is arranged to automatically switch corresponding rotating speeds according to different processing scenes, so that the processing precision is guaranteed, the processing speed is increased, and the quality of turning is greatly improved.

2. The steering locking mechanism is arranged to separate a tool changing step from a machining process, linkage locking control of the double-tool tower in the turning process is achieved, unnecessary machining loss caused by manual misjudgment and mistouch is avoided, and turning efficiency is guaranteed.

3. The linkage mechanism aims to link the speed change mechanism and the steering locking mechanism and is a main linkage part for realizing different rotating speeds in different processing scenes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall construction of a turning center with interlocking twin turret control according to the present invention;

FIG. 2 is a schematic structural diagram of a speed change mechanism of a turning center with linkage interlocking double turret control according to the present invention;

FIG. 3 is a partial enlarged structural view of a speed change mechanism with a linkage interlocking double turret controlled turning center according to the present invention;

FIG. 4 is a schematic view of the steering lock mechanism and linkage position structure of the turning center with linkage interlocking double turret control according to the present invention;

FIG. 5 is a schematic diagram of the position structure of the magnetic block and the iron block of the turning center with linkage interlocking double turret control according to the present invention;

FIG. 6 is a schematic view of a turret configuration with a linked interlocking dual turret controlled turning center of the present invention;

FIG. 7 is a schematic structural view of a limiting groove and a limiting bulge of a turning center with linkage interlocking double turret control according to the present invention;

in the figure: 1. a base; 2. a first turret; 3. a second turret; 4. a first belt pulley; 5. a second belt pulley; 6. a first belt; 7. the gear-shifting mechanism comprises a gear-shifting mechanism 701, a box body 702, a third belt pulley 703, a fourth belt pulley 704, a second belt 705, a first rotating shaft 706, a second rotating shaft 707, a screw, 708, a sliding block 709, a first connecting rod 710, a second connecting rod 711, a first ring 712, a second ring 713, a third sleeve 714, a fourth sleeve 715, a first stop block 716, a second stop block 717, a fourth gear 718, a fifth gear 719, a third rotating shaft 720 and a fourth rotating shaft; 8. a main motor; 9. a main shaft fixing seat; 10. the steering locking mechanism comprises a steering locking mechanism 101, a first sleeve 102, a cylinder 103, a first gear 104, a second gear 105, a first motor 106, a first turntable 107, a second turntable 108, a cutter 109 and a supporting rod; 11. the linkage mechanism comprises a linkage mechanism 111, an arc-shaped oil storage chamber 112, an iron block 113, a magnetic block 114, an oil pipe 115, a second sleeve 116, a push rod 117, a rack 118 and a third gear; 12. a limiting groove; 13. and a limiting bulge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides the following technical solutions: turning center with two sword tower control of linkage interlocking, including base 1, sword tower 2, No. two sword towers 3, belt pulley 4, No. two belt pulleys 5, a belt 6, speed change mechanism 7, main motor 8 and main shaft fixing base 9 parts, sword tower 2 and No. two sword tower 3 symmetric distribution in base 1 upper surface, main shaft fixing base 9 fixed connection base 1 upper surface, main shaft fixing base 9 is located the mid point of a sword tower 2 and No. two sword tower 3 lines, belt pulley 4 rotates connects main shaft fixing base 9, main motor 8 output shaft speed change mechanism 7, the output shaft cover that main motor 8 one end was kept away from to speed change mechanism 7 is equipped with No. two belt pulleys 5, rotate on belt pulley 4 and No. two belt pulleys 5 and be connected belt 6.

Fixing a workpiece on a main shaft fixing seat 9, communicating a power supply, starting a main motor 8, driving a second belt pulley 5 to move by the main motor 8, driving a first belt pulley 4 to move by the second belt pulley 5 through a first belt 6, and thus, rotating the workpiece; controlling the first tool turret 2 and the second tool turret 3 to generate relative displacement on the base 1, and turning; when different processing scenes are switched, the relative positions of the first tool turret 2 and the second tool turret 3 are changed, and meanwhile, the speed change mechanism 7 is started to continue processing.

The first tool turret 2 and the second tool turret 3 are both provided with a steering locking mechanism 10, the steering locking mechanism 10 comprises a first sleeve 101, a cylinder 102, a first gear 103, a second gear 104, a first motor 105, a first rotary table 106, a second rotary table 107, a supporting rod 109 and a tool 108 component, the side wall of the first sleeve 101 is fixedly connected with the upper surface of the base 1, the cylinder 102 is fixedly connected with the bottom of the first sleeve 101, an output shaft of the cylinder 102 extends into the first sleeve 101 from the bottom of the first sleeve 101 to be rotatably connected with one end of the first gear 103, the first gear 103 is far away from one side of the cylinder 102 and is fixedly connected with the first rotary table 106, the second rotary table 107 is circular, the side edge of the second rotary table 107 is fixedly connected with the inner wall of the first sleeve 101, the side edge of the first rotary table 106 is slidably connected with the inner wall of the first sleeve 101, the first rotary table 106 is parallel to the second rotary table 107, and the first rotary table 106 is far away from one side of the tool 108, the output shaft of the first motor 105 is fixedly connected with the second gear 104, the output shaft of the first motor 105 is rotatably connected with one end of the supporting rod 109, one end, far away from the first motor 105, of the supporting rod 109 is fixedly connected with the inner wall of the first sleeve 101, and the first gear 103 is meshed with the second gear 104.

The power supply is connected, the first motor 105 is started, the first motor 105 drives the second gear 104 to rotate, the second gear 104 and the first gear 103 are in meshed motion, the first gear 103 drives the first turntable 106 and the cutter 108 to rotate together, and the second turntable 107 is similar to the first turntable 106, so that the purpose of switching the cutter 108 is achieved; when the switching is completed and the turning is carried out for work, the air cylinder 102 is started, the action end of the air cylinder 102 pushes the first gear 103 to generate displacement, so that the first gear 103 is separated from the second gear 104, the effect of locking control of the turret is realized, unnecessary loss caused by manual misjudgment and mistouch is effectively avoided, and the efficiency of turning is ensured.

Be equipped with link gear 11 in No. two carousels 107, link gear 11 includes arc oil storage chamber 111, iron plate 112, magnetic path 113, oil pipe 114, No. two sleeve 115, push rod 116, rack 117 and No. three gear 118 parts, inside No. two carousels 107 were arranged in to arc oil storage chamber 111, arc oil storage chamber 111 one end is for sealing, closed end one side fixed connection oil pipe 114 is kept away from to arc oil storage chamber 111, the path radian that cutter 108 passed through when arc oil storage chamber 111 radian and a carousel 106 rotated 180 equals, arc oil storage chamber 111 closed section is equipped with iron plate 112, iron plate 112 side and arc oil storage chamber 111 inner wall sealed sliding connection, cutter 108 bottom is equipped with magnetic force 113 in a carousel 106 junction, magnetic path 113 is connected with iron plate 112, arc oil storage chamber 111 one end fixed connection No. two sleeve 115 is kept away from to oil pipe 114, be equipped with push rod 116 in No. two sleeve 115, one end of the push rod 116, which is far away from the oil pipe 114, is fixedly connected with a rack 117, one end of the rack 117, which is far away from the push rod 116, extends into the speed change mechanism 7, and the rack 117 is meshed with a third gear 118 inside the speed change mechanism 7.

The power supply is connected, when the cutter 108 needs to be switched in different processing scenes, the first turntable 106 and the second turntable 107 drive the cutter 108 to rotate, the cutter 108 drives the magnet 113 to move together, under the magnetic attraction effect of the magnet 113, the iron block 112 moves in the arc-shaped oil storage chamber 111 along with the magnet 113, namely, hydraulic oil in the arc-shaped oil storage chamber 11 is pushed to enter the second sleeve 115 through the oil pipe 114, so that the push rod 116 drives the rack 117 to move, the rack 117 and the third gear 118 move in a meshing manner, the speed change mechanism 7 is driven to move, and the effect is achieved.

The speed change mechanism 7 comprises a box 701, a third belt pulley 702, a fourth belt pulley 703, a second belt 704, a first rotating shaft 705, a second rotating shaft 706, a third rotating shaft 719, a fourth rotating shaft 720, a screw 707, a slider 708, a first connecting rod 709, a second connecting rod 710, a first ring 711, a second ring 712, a third sleeve 713, a fourth sleeve 714, a first stop 715, a second stop 716, a fourth gear 717 and a fifth gear 718, wherein one end of the first rotating shaft 705 is fixedly connected with the main motor 8, the axis of the second rotating shaft 706 is arranged on an extension line of the axis of the first rotating shaft 705, one end of the second rotating shaft 706 extends into the box 701 to be slidably connected with the third sleeve 713, the fourth gear 717 is arranged on the third sleeve 713, one end of the third sleeve, which is far away from the second rotating shaft 706, extends out of the box 701, and is far away from the main motor 8 to be fixedly connected with the second belt pulley 5, the third belt pulley 702 is arranged on the first rotating shaft 705, one end of the fourth sleeve 714 is rotatably connected with the inner wall of the box body 701, a fourth belt pulley 703 is sleeved on the fourth sleeve 714, the third belt pulley 702 and the fourth belt pulley 703 are rotatably connected with a second belt 704, one end of a third rotating shaft 719 is slidably connected with the inner wall of the fourth sleeve 714, the axis of the fourth rotating shaft 720 is arranged on the extension line of the third rotating shaft 719, one end of the fourth rotating shaft 720, far away from the third rotating shaft 719, is fixedly connected with a fifth gear 718, the fourth gear 717 is meshed with the fifth gear 718, one end of the screw 707 is rotatably connected with the inner wall of the box body 701, the other end of the screw 707 is fixedly connected with the third gear 118, a first hole is arranged in the middle of the sliding block 708, internal threads are arranged in the first hole, the screw 707 penetrates through the first hole to be matched with the internal threads, one end, close to one side of the sliding block 708 and the second rotating shaft 706, is fixedly connected with one end of a first connecting rod 709, one end, far away from the sliding block 708, is fixedly connected with a first ring 711, first ring 711 cover is established on No. two pivot 706, first ring 711 and No. two pivot 706 contact position are equipped with a dog 715, slider 708 and No. three pivot 719 are close to one side fixed connection No. two connecting rod 710 one end, No. two connecting rod 710 is kept away from slider 708 one end fixed connection No. two ring 712, No. two ring 712 cover is established on No. three pivot 719, No. two ring 712 and No. three pivot 719 contact position are equipped with No. two dog 716, the position that No. one pivot 705 and No. two pivot 706 are close to is equipped with intermeshing's tooth respectively, No. three pivot 719 and No. four pivot 720 are close to the position and are equipped with intermeshing's tooth respectively.

The power supply is connected, in one scene, the main motor 8 drives the first rotating shaft 705 to move, the first rotating shaft 705 and the second rotating shaft 706 to move in a meshed mode, the second rotating shaft 706 drives the third sleeve 713 to move, and the third sleeve 713 drives the second belt pulley 5 to rotate to achieve the effect;

the power supply is connected, in another scene, the third gear 118 drives the screw 707 to rotate, the third main shaft 719 and the screw 707 move relatively to generate displacement, the third main shaft 719 drives the second rotating shaft 706 to move through the first connecting rod 709 and separate from the first rotating shaft 705, the third rotating shaft 719 is driven to move through the second connecting rod 710 and is meshed with the fourth main shaft 720, the fifth gear 718 is driven by the fourth main shaft 720 to rotate and is meshed with the fourth gear 717, and the speed change effect is achieved.

Limiting grooves 12 are formed in the third sleeve 713 and the fourth sleeve 714, limiting protrusions 13 are arranged on the second rotating shaft 706 and the third rotating shaft 719, and the limiting protrusions 13 are in sliding contact with the limiting grooves 12 in the limiting grooves 12. The limiting groove 12 and the limiting protrusion 13 are arranged to limit the movement range of the third sleeve 713 and the fourth sleeve 714 to the second rotating shaft 706 and the third rotating shaft 719.

The diameter of the fifth gear 718 is 1.5-3 times that of the fourth gear 717, and the meshing effect of the fifth gear 718 and the fourth gear 717 is a key point for realizing different rotating speed switching.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Turning center with two sword tower control of linkage interlocking, its characterized in that: the turning center comprises a base (1), a first cutter tower (2), a second cutter tower (3), a first belt pulley (4), a second belt pulley (5), a first belt (6), a speed change mechanism (7), a main motor (8) and a main shaft fixing seat (9), the first tool turret (2) and the second tool turret (3) are symmetrically distributed on the upper surface of the base (1), the main shaft fixing seat (9) is fixedly connected with the upper surface of the base (1), the main shaft fixing seat (9) is positioned on the middle point of the connecting line of the first cutter tower (2) and the second cutter tower (3), the first belt pulley (4) is rotationally connected with a main shaft fixing seat (9), the output shaft of the main motor (8) is connected with a speed change mechanism (7), an output shaft of one end of the speed change mechanism (7) far away from the main motor (8) is sleeved with a second belt pulley (5), the first belt pulley (4) and the second belt pulley (5) are rotatably connected with a first belt (6);

the first cutter tower (2) and the second cutter tower (3) are respectively provided with a steering locking mechanism (10), the steering locking mechanism (10) comprises a sleeve (101), a cylinder (102), a gear (103), a second gear (104), a motor (105), a turntable (106), a second turntable (107), a supporting rod (109) and a cutter (108) component, the side wall of the first sleeve (101) is fixedly connected with the upper surface of the base (1), the cylinder (102) is fixedly connected with the bottom of the first sleeve (101), an output shaft of the cylinder (102) extends into the inner part of the first sleeve (101) from the bottom of the first sleeve (101) to be rotatably connected with one end of the first gear (103), the first gear (103) is far away from one side of the cylinder (102) and is fixedly connected with the turntable (106), the second turntable (107) is in a circular ring shape, the side edge of the second turntable (107) is fixedly connected with the inner wall of the first sleeve (101), the side edge of the first rotary table (106) is connected with the inner wall of the first sleeve (101) in a sliding mode, the first rotary table (106) is parallel to the second rotary table (107), a cutter (108) is fixedly connected to one side, away from the first gear (103), of the first rotary table (106), an output shaft of the first motor (105) is fixedly connected with the second gear (104), the output shaft of the first motor (105) is rotatably connected with one end of a supporting rod (109), one end, away from the first motor (105), of the supporting rod (109) is fixedly connected with the inner wall of the first sleeve (101), and the first gear (103) is meshed with the second gear (104);

be equipped with link gear (11) in No. two carousel (107), link gear (11) include arc oil storage chamber (111), iron plate (112), magnetic path (113), oil pipe (114), No. two sleeve (115), push rod (116), rack (117) and No. three gear (118) parts, inside No. two carousel (107) were arranged in to arc oil storage chamber (111), arc oil storage chamber (111) one end was sealed, blind end one side fixed connection oil pipe (114) was kept away from to arc oil storage chamber (111), the distance radian that cutter (108) passed through when arc oil storage chamber (111) radian rotated 180 with carousel (106) equals, arc oil storage chamber (111) section is equipped with iron plate (112), iron plate (112) side and arc oil storage chamber (111) inner wall sealing sliding connection, cutter (108) bottom is equipped with magnetic path (113) in carousel (106) junction, the magnetic block (113) is magnetically connected with the iron block (112), one end, far away from the arc-shaped oil storage chamber (111), of the oil pipe (114) is fixedly connected with a second sleeve (115), a push rod (116) is arranged in the second sleeve (115), one end, far away from the oil pipe (114), of the push rod (116) is fixedly connected with a rack (117), one end, far away from the push rod (116), of the rack (117) extends into the speed change mechanism (7), and the rack (117) is meshed with a third gear (118) in the speed change mechanism (7);

the speed change mechanism (7) comprises a box body (701), a third belt pulley (702), a fourth belt pulley (703), a second belt (704), a first rotating shaft (705), a second rotating shaft (706), a third rotating shaft (719), a fourth rotating shaft (720), a screw (707), a sliding block (708), a first connecting rod (709), a second connecting rod (710), a first ring (711), a second ring (712), a third sleeve (713), a fourth sleeve (714), a first stop block (715), a second stop block (716), a fourth gear (717) and a fifth gear (718), one end of the first rotating shaft (705) is fixedly connected with a main motor (8), the axis of the second rotating shaft (706) is arranged on an extension line of the axis of the first rotating shaft (705), one end of the second rotating shaft (706) extends into the box body (701) to be slidably connected with the third sleeve (713), and the fourth gear (717) is sleeved on the third sleeve (713), one end, far away from the second rotating shaft (706), of the third sleeve (713) extends out of one end, far away from the main motor (8), of the box body (701) and is fixedly connected with a second belt pulley (5), the third belt pulley (702) is sleeved on the first rotating shaft (705), one end of the fourth sleeve (714) is rotatably connected with the inner wall of the box body (701), the fourth sleeve (714) is sleeved with the fourth belt pulley (703), the third belt pulley (702) and the fourth belt pulley (703) are rotatably connected with a second belt (704), one end of the third rotating shaft (719) is slidably connected with the inner wall of the fourth sleeve (714), the shaft center of the fourth rotating shaft (720) is arranged on an extension line of the third rotating shaft (719), one end, far away from the third rotating shaft (719), of the fourth rotating shaft (720) is fixedly connected with a fifth gear (718), the fourth gear (717) is meshed with the fifth gear (718), one end of the screw (707) is rotatably connected with the inner wall of the box body (701), the other end of the screw rod (707) is fixedly connected with a third gear (118), a first hole is formed in the middle of the sliding block (708), an internal thread is arranged in the first hole, the screw rod (707) penetrates through the first hole to be matched with the internal thread, one side, close to the sliding block (708) and the second rotating shaft (706), of the sliding block (708) is fixedly connected with one end of a first connecting rod (709), one end, far away from the sliding block (708), of the first connecting rod (709) is fixedly connected with a first ring (711), the first ring (711) is sleeved on the second rotating shaft (706), a first stop block (715) is arranged at the contact position of the first ring (711) and the second rotating shaft (706), one side, close to the sliding block (708) and the third rotating shaft (719), one end, far away from the sliding block (710), of the second connecting rod (712) is fixedly connected with a second ring (712), and the second ring (712) is sleeved on the third rotating shaft (719), a second stop block (716) is arranged at the contact position of the second ring (712) and the third rotating shaft (719), mutually meshed teeth are respectively arranged at the positions, close to the first rotating shaft (705) and the second rotating shaft (706), of the first rotating shaft and the fourth rotating shaft (720), of the third rotating shaft (719) and the fourth rotating shaft (720), of the third rotating shaft;

limiting grooves (12) are formed in the third sleeve (713) and the fourth sleeve (714), limiting protrusions (13) are arranged on the second rotating shaft (706) and the third rotating shaft (719), and the limiting protrusions (13) are in sliding contact with the limiting grooves (12) in the limiting grooves (12);

the diameter of the fifth gear (718) is 1.5-3 times that of the fourth gear (717).