CN112643377A

CN112643377A - Stable in structure's rotatory tool changing device

Info

Publication number: CN112643377A
Application number: CN202011443539.6A
Authority: CN
Inventors: 钱利斌
Original assignee: Changzhou Likai Cnc Technology Co ltd
Current assignee: Changzhou Likai Cnc Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-04-13

Abstract

The utility model relates to a technical field of tool magazine toolchanger, a stable in structure's rotatory tool changing device is disclosed, set up the blade disc on the base including base and rotation, the periphery edge of blade disc encircles and is provided with a plurality of sliding seats, the sliding seat slides along the blade disc axial and links to each other with the blade disc, be provided with the cutter holder on the sliding seat, the bilateral symmetry of sliding seat is provided with and is used for preventing the gliding positioning spring of sliding seat, the location cylinder has set firmly on the base, the tailpiece of the piston rod portion of location cylinder has set firmly rubber system and has promoted the piece, it is the round platform shape setting that the location cylinder was kept away from to the path end to promote the piece, the major diameter end external diameter that promotes the piece equals with the piston rod external diameter of location cylinder, it has worn to shift the hole to run through along self slip direction on the sliding seat, it is provided with. This application has the good effect of structural stability.

Description

Stable in structure's rotatory tool changing device

Technical Field

The application relates to the field of tool magazine tool changing equipment, in particular to a rotary tool changing device with a stable structure.

Background

The tool magazine system is a device for meeting the requirements of tool storage and tool changing in the automatic machining process, and automatic tool changing of the tool magazine enables a single device to perform various machining operations such as milling, drilling, boring and the like, so that the machining time course is greatly shortened, and the production cost is effectively reduced.

The invention patent document with the publication number of CN110449957B discloses a tool changing device, which comprises a base, a main motor and a cutter head rotationally connected to the base, wherein the main motor is arranged on the base and drives the cutter head to rotate, a plurality of sliding grooves are formed in the periphery of the cutter head, a sliding seat is connected in the sliding grooves in a sliding mode along the length direction of the main motor, a sliding cavity is formed in the sliding seat, a sliding control penetrating through the sliding seat is formed in the sliding seat, a sliding piece is connected in the sliding cavity in a sliding mode, a driving piece for driving the sliding piece to move and sealing a sliding hole is arranged in the sliding seat, a positioning air cylinder is arranged on the base, a return spring is arranged in each sliding groove, two ends of each return.

When the machine tool needs to take the cutter, the main motor works to drive the cutter disc to rotate, so that the cutter holder clamped with the preset cutter corresponds to the output end of the positioning air cylinder, the driving piece drives the sliding sheet to move to the closed sliding hole, the output end of the positioning air cylinder extends out and is abutted against the sliding sheet, the sliding seat is driven to be pushed to one side of the cutter disc far away from the main motor, the preset cutter is independently protruded out of the cutter disc at the moment, the operating space near the preset cutter is sufficient, and the machine tool is not easy to operate by mistake when, because the driving piece only drives the sliding sheet on the sliding seat where the cutter is positioned, if the main motor fails, the sliding seat where the cutter is positioned is not accurately rotated to the corresponding point of the positioning cylinder, the output end of the positioning cylinder directly passes through the slide hole, so that the wrong slide seat cannot be pushed out, and then the lathe also can not snatch non-predetermined cutter, effectively reduces the possibility that the processing accident produced, improves the cutter of rotatory tool changer and carries the precision.

Aiming at the related technologies, the inventor thinks that the output end of the positioning air cylinder impacts the sliding sheet for multiple times, the sliding sheet and the positioning air cylinder are easy to impact and damage, and the defect of poor structural stability exists.

Disclosure of Invention

For the not good condition of tool changer structural stability, this application provides a stable in structure's rotatory tool changer.

The application provides a stable in structure's rotatory tool changer adopts following technical scheme:

a rotary tool changer with stable structure comprises a base and a cutter head rotationally arranged on the base, a plurality of sliding seats are arranged at the peripheral edge of the cutter head in a surrounding manner, the sliding seats are connected with the cutter head in a sliding manner along the axial direction of the cutter head, the sliding seat is provided with a tool holder, two sides of the sliding seat are symmetrically provided with positioning springs for preventing the sliding seat from sliding, a positioning cylinder is fixedly arranged on the base, a rubber pushing block is fixedly arranged at the end part of a piston rod of the positioning cylinder, the pushing block is arranged in a round table shape with a small diameter end far away from the positioning cylinder, the outer diameter of the large diameter end of the pushing block is equal to the outer diameter of a piston rod of the positioning cylinder, the sliding seat is provided with a penetrating hole in a penetrating mode along the sliding direction of the sliding seat, a baffle used for sealing the penetrating hole is arranged on the sliding seat in a sliding mode, and a sealing mechanism used for controlling the baffle to slide is arranged on the sliding seat.

By adopting the technical scheme, the cutter head rotates to align the appointed sliding seat and the positioning cylinder, the sealing mechanism drives the baffle to slide to the sealed penetrating hole, the piston rod of the positioning cylinder stretches out to drive the pushing block to move to push the baffle away from the base, the sliding seat is taken away from the base, the elasticity of the two positioning springs simultaneously acts on the sliding seat at the moment, the sliding seat is stressed in two directions and is not easy to twist, after a cutter on the appointed cutter holder is taken down, the pushing block resets, the sliding seat stressed in two directions stably resets, the sliding seat is not easy to twist due to unidirectional stress, the flexibility of the pushing block is buffered between the baffle and the positioning cylinder, the stress of the baffle is uniform and is not easy to damage, the shape of the pushing block enables the piston rod of the pushing block and the piston rod of the positioning cylinder to smoothly penetrate through the penetrating hole, the inner wall of the penetrating hole is not.

Optionally, the thickness of the baffle plate is not less than one third of the thickness of the sliding seat.

By adopting the technical scheme, the compression strength of the baffle is insufficient when the thickness of the baffle is too small, the stress conduction path between the sliding seat and the baffle is too long when the thickness of the baffle is too large, and the thickness proportion of the baffle and the sliding seat is the optimal thickness proportion obtained through a certain test.

Optionally, a displacement hole penetrates through the baffle along the thickness direction of the baffle, and a plurality of universal balls are embedded on the inner peripheral side wall of the displacement hole in a surrounding manner.

Through adopting above-mentioned technical scheme, whether the control whether displacement hole and the through hole coincide can realize wearing to move the hole and seal the control whether, and universal ball rotates along with promoting the piece and wearing to move in the displacement hole, promotes that the piece wears to move more smoothly and the difficult damage of piston rod of location cylinder.

Optionally, a reference seat is detachably and fixedly arranged on the cutter head through a threaded piece, and the sliding seat is arranged on the reference seat in a sliding manner.

Through adopting above-mentioned technical scheme, when positioning spring or cutter holder wearing and tearing, the user's accessible is pulled down the benchmark seat and is realized positioning spring or cutter holder's whole change, and the routine maintenance is convenient.

Optionally, the reference seat is provided with three dovetail grooves used for being connected with the sliding seat in a sliding manner, the dovetail grooves are arranged around the periphery of the sliding seat, and the positioning spring is embedded in the dovetail grooves.

Through adopting above-mentioned technical scheme, the elastic force multidirectional and the multiple spot of location spring act on the sliding seat, and the sliding seat atress is more even, and the possibility that takes place to twist reverse when the sliding seat slides is lower.

Optionally, the both ends of positioning spring all set firmly the change piece, the change piece is the swallow-tailed setting, all be provided with on reference seat and the sliding seat be used for with change piece sliding connection's change groove, the locking round pin is worn to be equipped with to the dovetail on the reference seat, the locking round pin runs through four change pieces, sliding seat and the reference seat that are located the dovetail simultaneously, the both ends of locking round pin extend to the reference seat outside and threaded connection have the locking nut.

Through adopting above-mentioned technical scheme, when the user need change positioning spring alone, the locking nut is screwed off, extracts the locking round pin, slides the change piece and changes the groove, sets up new positioning spring in the dovetail through reverse operation, and it is convenient to change.

Optionally, a stroke scale for determining the sliding position of the sliding seat is arranged on the reference seat.

By adopting the technical scheme, the stroke scales facilitate a user to determine the position of the static sliding seat in a normal state, so that the sliding seat is timely and convenient when the position deviates due to aging fatigue of the positioning spring, and the user determines that the opportunity for replacing the positioning spring is convenient.

Optionally, the sealing mechanism includes an electromagnet and a sealing spring which are fixedly arranged in the sliding seat, the sealing spring is used for driving the baffle to slide to the unsealed penetration hole, a magnetic sheet is fixedly arranged on the baffle corresponding to the electromagnet, and the electromagnet is used for driving the baffle to slide to the sealed penetration hole.

Through adopting above-mentioned technical scheme, the user changes electro-magnet department magnetic force state through the circular telegram condition that changes the electro-magnet, and then controls baffle reciprocating sliding through the magnetic force of electro-magnet and closing spring's elasticity, and control easy operation and control are effectual.

Optionally, a stroke block is fixedly arranged on a piston rod of the positioning cylinder, a displacement sensor used for detecting the distance between the stroke block and the sliding seat is embedded on the sliding seat, and an alarm used for sounding and early warning when the detection data of the displacement sensor is lower than a specified value is arranged on the base.

By adopting the technical scheme, the displacement sensor continuously measures the distance between the stroke block and the sliding seat, when the detection data of the displacement sensor is lower than a specified value, the fact that the pushing block passes through the penetrating hole is indicated, the fact that the rotation of the cutter head is controlled to be in a problem is indicated, the alarm gives out sound in time, and the user can conveniently maintain the cutter.

Optionally, a balance cylinder is arranged on the base corresponding to the positioning cylinder, a rubber balance block is fixedly arranged at the end of a piston rod of the balance cylinder, and the balance cylinder and the positioning cylinder are respectively arranged on two sides of a rotating center line of the cutter head.

Through adopting above-mentioned technical scheme, when positioning cylinder drive promotion piece was towards the blade disc displacement, balanced cylinder drive balancing piece displacement to with the blade disc butt, the blade disc is effectively supported to the balancing piece to prevent the blade disc and pass the sliding seat along with promoting the piece and twist reverse, this toolchanger's structural stability is better.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the positioning springs are arranged on the two sides of the sliding seat, so that the sliding seat is stressed uniformly and slides stably, the baffle is stressed uniformly and is not easy to wear by the pushing block made of rubber, a piston rod of the positioning cylinder is not easy to punch and break through the inner wall of the moving hole, the structural stability of the tool changing device is effectively improved, and the service life is prolonged;

2. the positioning spring is conveniently replaced through the locking pin, the locking nut, the replacing groove and the replacing block, the elastic piece can be conveniently replaced when the elastic piece is aged and fatigued, and the tool changing device is good in use stability;

3. the piston rod of the balance cylinder drives the balance block to move to abut against the cutter head in a telescopic mode, the cutter head is prevented from sliding along with the positioning cylinder to drive the sliding seat to rotate through the support of the balance block to the cutter head, the cutter head is not prone to damage, and the structural stability of the tool changing device is better.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a sectional view of the internal structure of the perforation according to the embodiment of the present application.

Fig. 3 is a schematic overall structure diagram of the positioning cylinder according to the embodiment of the present application.

Fig. 4 is a sectional view of an internal structure of a dovetail groove according to an embodiment of the present application.

Fig. 5 is a partially enlarged schematic view of a portion a in fig. 4.

Fig. 6 is a schematic view of an installation structure of a reference seat according to an embodiment of the present application.

Fig. 7 is a schematic view of an installation structure of a positioning spring according to an embodiment of the present application.

Description of reference numerals: 1. a base; 11. positioning the air cylinder; 111. a pushing block; 112. a stroke block; 12. a balance cylinder; 121. a counterbalance; 13. a main motor; 3. a cutter head; 4. a reference base; 41. a dovetail groove; 42. a positioning spring; 421. replacing the block; 43. stroke scales; 5. a sliding seat; 51. penetrating and moving the hole; 52. a baffle plate; 521. a displacement hole; 522. a ball transfer unit; 53. a displacement sensor; 54. a tool holder; 6. a sealing mechanism; 61. an electromagnet; 62. a magnetic sheet; 63. a closing spring; 71. a locking pin; 72. a lock nut; 73. replacing the groove; 8. an alarm.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a stable in structure's rotatory tool changing device. Referring to fig. 1, a rotary tool changer with a stable structure comprises a base 1, a main motor 13 and a cutter disc 3, wherein the cutter disc 3 and the main motor 13 are respectively arranged on two sides of the base 1, the cutter disc 3 is rotatably connected with the base 1, and the main motor 13 is used for driving the cutter disc 3 to rotate. The periphery of the cutter head 3 is provided with a plurality of reference seats 4 for bearing cutters, the number of the reference seats 4 can be four or eight, but the number of the reference seats 4 is ten in the embodiment, so that the cutter head can meet the bearing requirement of the cutters. A sliding seat 5 is arranged on the reference seat 4 in a sliding manner along the axial direction of the cutter head 3, and a cutter holder 54 for holding a cutter is arranged on the sliding seat 5.

Referring to fig. 2 and 3, the base 4 is provided with three dovetail grooves 41 for slidably connecting with the sliding seat 5, the sliding seat 5 is embedded in one end of the base 4 away from the axis of the cutter head 3, and the three dovetail grooves 41 are arranged around the periphery of the sliding seat 5. Positioning springs 42 are arranged in the dovetail grooves 41, two positioning springs 42 are arranged in a single dovetail groove 41, and the two positioning springs 42 are respectively arranged on two sides of the sliding seat 5. One end of the positioning spring 42 is fixedly connected with the sliding seat 5, the other end of the positioning spring 42 is fixedly connected with the reference seat 4, and the elastic force of the two positioning springs 42 prevents the sliding seat 5 from sliding together.

Referring to fig. 3, a penetrating hole 51 is formed in the sliding seat 5 in a penetrating manner along the sliding direction of the sliding seat 5, a baffle plate 52 for closing the penetrating hole 51 is slidably disposed on the sliding seat 5, and a closing mechanism 6 for controlling the sliding of the baffle plate 52 is disposed on the sliding seat 5. The baffle plate 52 is embedded in the sliding seat 5, the thickness of the baffle plate 52 is not less than one third of the thickness of the sliding seat 5, and the thickness of the baffle plate 52 in this embodiment is one third of the thickness of the sliding seat 5.

Referring to fig. 2, a positioning cylinder 11 and a balancing cylinder 12 are fixedly arranged on the base 1, and the positioning cylinder 11 and the balancing cylinder 12 are respectively arranged at two sides of the rotation center line of the cutter disc 3. The end of the piston rod of the positioning cylinder 11 is fixedly provided with a pushing block 111, the end of the piston rod of the balancing cylinder 12 is fixedly provided with a balancing block 121, and the balancing block 121 and the pushing block 111 are both made of rubber. The pushing block 111 is used for pushing the baffle plate 52 away from the base 1 along the sliding direction of the sliding seat 5, and the balance weight 121 is used for abutting against one side of the cutter disc 3 close to the base 1.

When a user needs to replace a tool, the main motor 13 drives the cutter disc 3 to rotate until the designated sliding seat 5 is opposite to the positioning cylinder 11, the sealing mechanism 6 drives the baffle plate 52 to slide to the sealed penetrating hole 51, the piston rod of the positioning cylinder 11 extends out to the position where the pushing block 111 contacts with the baffle plate 52, and the balance block 121 moves to abut against the cutter disc 3 under the driving of the balance cylinder 12, so that the piston rod of the positioning cylinder 11 continuously pushes the baffle plate 52 to the sliding seat 5 to move away from the base 1.

In the pushing process, the ratio of the thicknesses of the baffle plate 52 and the sliding seat 5 enables the compressive strength of the baffle plate 52 to be sufficient, the baffle plate 52 and the sliding seat 5 can be uniformly stressed, and the two have good stability of synchronous displacement. Meanwhile, the cutter head 3 is not easy to be driven by the sliding seat 5 to twist due to the support of the balance block 121, the baffle 52 and the cutter head 3 are uniformly stressed due to the flexibility of the balance block 121 and the pushing block 111, the baffle 52 and the cutter head 3 are not easy to damage, the elastic force of the positioning spring 42 acts on the sliding seat 5 in a two-way mode, the sliding seat 5 is not easy to twist, and the cutter changing device is good in structural stability.

The tool holder 54 on the sliding seat 5 pushed away from the base 1 is offset from the rest of the tool holders 54, and the subsequent removal of a given tool requires a large operating space. When the main motor 13 breaks down and causes the non-designated sliding seat 5 to be aligned with the positioning cylinder 11, the sealing mechanism 6 cannot drive the baffle plate 52 to displace, the pushing block 111 directly penetrates through the penetrating hole 51 in the moving process, the non-designated cutter cannot be removed subsequently, the cutter changing and using are convenient, and the cutter changing accuracy is high.

Referring to fig. 4, in order to further improve the smoothness of the above-mentioned use and stabilize the tool changing accuracy, the pushing block 111 is disposed in a circular truncated cone shape with a small diameter end away from the positioning cylinder 11, the outer diameter of the large diameter end of the pushing block 111 is equal to the outer diameter of the piston rod of the positioning cylinder 11, and the inner diameter of the penetrating hole 51 is 1.2 times the outer diameter of the piston rod of the positioning cylinder 11. The shape of the pushing block 111 enables the pushing block 111 and the piston rod of the positioning cylinder 11 to move more smoothly in the penetrating hole 51, and the effect of avoiding mistakenly taking the knife through the using process is more stable.

Referring to fig. 4 and 5, in order to further facilitate the user to repair the main motor 13 when the main motor 13 fails, a stroke block 112 is fixedly provided on the outer circumference of the piston rod of the positioning cylinder 11, and a displacement sensor 53 for detecting the distance between the stroke block 112 and the sliding seat 5 is fixedly provided on the sliding seat 5. The base 1 is provided with an alarm 8 for receiving detection data of the displacement sensor 53, and the alarm 8 is internally provided with a storage module, a comparison module and a sounding module. When the pushing block 111 pushes the baffle plate 52, the distance between the sliding seat 5 and the stroke block 112 is constant; when the pushing block 111 passes through the through hole 51, the distance between the sliding seat 5 and the stroke block 112 continuously decreases; therefore, the alarm 8 gives an alarm when the data detected by the displacement sensor 53 is lower than a specified value, and the user can timely maintain the main motor 13.

Referring to fig. 5 and 6, the reference seat 4 is embedded in the cutter head 3, and the reference seat 4 is detachably and fixedly connected with the cutter head 3 through a plurality of screws. The both ends of connecting spring all set firmly change piece 421, change piece 421 is the swallow-tail shape setting. Slide holder 5 and base 4 are gone up all to correspond and change piece 421 and are provided with and change groove 73, change groove 73 one end and open and one end is sealed, change groove 73 and be used for sliding with change piece 421 and link to each other. A lock pin 71 is provided in the reference seat 4 so as to correspond to the dovetail groove 41, and the longitudinal direction of the lock pin 71 coincides with the longitudinal direction of the dovetail groove 41. The locking pin 71 penetrates the reference seat 4, the sliding seat 5, and the replacement block 421, both ends of the locking pin 71 extend out of the reference seat 4, and both ends of the locking pin 71 are screwed with locking nuts 72.

When the elasticity of the positioning spring 42 fails, the user can manually remove the reference seat 4, then unscrew the locking nut 72, manually pull out the locking pin 71, and then slide the replacing block 421 out of the replacing groove 73, so that the positioning spring 42 can be removed. The new positioning spring 42 is placed into the dovetail groove 41, the replacement block 421 slides into the replacement groove 73, the locking pin 71 is arranged in a penetrating manner, the locking nut 72 is sleeved at the end part of the locking pin 71, the locking nut 72 is rotated until the two locking nuts 72 clamp the reference seat 4, the reference seat 4 is reset, and the replacement of the positioning spring 42 is completed. Replacement block 421 is fixed in replacement groove 73 because of the abutting limit of lock pin 71, and lock pin 71 guides positioning spring 42 to deform, so that positioning spring 42 is convenient to replace and stable in deformation effect.

Referring to fig. 6, in order to further facilitate the user to determine the timing for replacing the positioning spring 42, the stroke scale 43 is disposed on the base 4 corresponding to the dovetail groove 41, and the stroke scale 43 is disposed along the length direction of the dovetail groove 41. The user can judge the sliding position of the sliding seat 5 under the normal state through the alignment condition of the stroke scales 43 and the sliding seat 5, and when the sliding position of the sliding seat 5 deviates, the positioning spring 42 is fatigue and needs to be replaced, so that the tool changing device is convenient to maintain.

Referring to fig. 7, in order to reduce the sliding stroke of the baffle plate 52, a displacement hole 521 is formed in the baffle plate 52 in a penetrating manner corresponding to the through-displacement hole 51, and a plurality of ball transfer units 522 are fitted around the inner peripheral side wall of the displacement hole 521. The number of the universal balls 522 may be three or six, but it is sufficient if the sliding of the piston rod of the positioning cylinder 11 is improved, and four are used in the present embodiment. The user can carry out the control whether location cylinder 11 can drive slide holder 5 displacement through the coincidence of displacement hole 521 and wearing and moving hole 51, and the slip stroke of baffle 52 effectively shortens, and the volume of closing mechanism 6 can reduce, and this tool changing device's compact structure degree is higher.

Referring to fig. 7, the sealing mechanism 6 includes an electromagnet 61 and a sealing spring 63 fixedly disposed in the sliding seat 5, one end of the sealing spring 63 is fixedly connected to the baffle 52, and the other end of the sealing spring 63 is fixedly connected to the sliding seat 5. The closed spring 63 and the electromagnet 61 are respectively arranged at two sides of the baffle plate 52, and a magnetic sheet 62 is fixedly arranged at one side of the baffle plate 52 close to the electromagnet 61. The elastic force of the closing spring 63 drives the shutter 52 to slide to the non-closing through hole 51, and the magnetic force of the electromagnet 61 is used for driving the shutter 52 to slide to the closing through hole 51.

When a user needs to seal the penetrating hole 51, the power-on state of the electromagnet 61 is changed, the magnetic force between the electromagnet 61 and the magnetic sheet 62 drives the baffle plate 52 to slide to the sealed penetrating hole 51, the power-on state of the electromagnet 61 is changed again, and the baffle plate 52 can reversely move to reset under the driving of the elastic force of the sealing spring 63. The sliding operation of the control baffle 52 is simple, and the control effect is good.

The implementation principle of the stable in structure's rotatory tool changer of this application embodiment does: the cutter head 3 rotates to the designated sliding seat 5 and is aligned with the positioning cylinder 11, the electrifying state of the corresponding electromagnet 61 is changed, the baffle plate 52 slides to the closed penetrating and moving hole 51, the positioning cylinder 11 and the balance cylinder 12 work simultaneously, the balance block 121 is driven to displace to abut against the cutter head 3, the pushing block 111 displaces to drive the baffle plate 52 and the sliding seat 5 to slide away from the base 1, the designated cutter holder 54 is staggered with the rest cutter holders 54, a user can accurately take the cutter under the condition of sufficient operating space, after the cutter taking is finished, the piston rods of the positioning cylinder 11 and the balance cylinder 12 are reset, the sliding seat 5 reversely displaces to reset under the driving of the bidirectional acting force of the two positioning springs 42, the sliding seat 5 and the cutter head 3 are not easy to twist, and the structural stability of the cutter changing device is good.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a stable in structure's rotatory tool changing device, includes base (1) and rotates blade disc (3) of setting on base (1), its characterized in that: the outer peripheral edge of blade disc (3) encircles and is provided with a plurality of sliding seats (5), sliding seat (5) along blade disc (3) axial with blade disc (3) slip continuous, be provided with cutter holder (54) on sliding seat (5), the bilateral symmetry of sliding seat (5) is provided with and is used for preventing gliding positioning spring (42) of sliding seat (5), set firmly location cylinder (11) on base (1), the piston rod tip of location cylinder (11) has set firmly rubber system and has promoted piece (111), it is the round platform shape setting that the location cylinder (11) was kept away from to the path end to promote piece (111), the major diameter end external diameter that promotes piece (111) equals with the piston rod external diameter of location cylinder (11), it has worn to move hole (51) to run through along self sliding direction on sliding seat (5), it is provided with baffle (52) that are used for sealing and move hole (51) to slide on sliding seat (5), and a sealing mechanism (6) for controlling the baffle (52) to slide is arranged on the sliding seat (5).

2. A structurally stable rotary tool changer according to claim 1, wherein: the thickness of the baffle plate (52) is not less than one third of the thickness of the sliding seat (5).

3. A structurally stable rotary tool changer according to claim 1, wherein: the baffle (52) is provided with a displacement hole (521) in a penetrating manner along the thickness direction of the baffle, and a plurality of universal balls (522) are embedded on the inner peripheral side wall of the displacement hole (521) in a surrounding manner.

4. A structurally stable rotary tool changer according to claim 1, wherein: the cutter head (3) is detachably and fixedly provided with a reference seat (4) through a threaded piece, and the sliding seat (5) is arranged on the reference seat (4) in a sliding mode.

5. A structurally stable rotary tool changer according to claim 4, characterized in that: be provided with on reference seat (4) and be used for three dovetail (41) that link to each other with sliding seat (5) slip, dovetail (41) encircle the periphery setting of sliding seat (5), positioning spring (42) are inlayed and are located in dovetail (41).

6. A structurally stable rotary tool changer according to claim 5, characterized in that: the both ends of positioning spring (42) all set firmly change piece (421), change piece (421) are the swallow-tail shape setting, all be provided with on reference seat (4) and sliding seat (5) and be used for changing change piece (421) sliding connection's change groove (73), wear to be equipped with lock round pin (71) corresponding dovetail (41) on reference seat (4), lock round pin (71) run through four change piece (421), sliding seat (5) and reference seat (4) that are located dovetail (41) simultaneously, the both ends of lock round pin (71) extend to reference seat (4) outer and threaded connection have lock nut (72).

7. A structurally stable rotary tool changer according to claim 6, characterized in that: and the reference seat (4) is provided with a stroke scale (43) for determining the sliding position of the sliding seat (5).

8. A structurally stable rotary tool changer according to claim 1, wherein: the sealing mechanism (6) comprises an electromagnet (61) and a sealing spring (63) which are fixedly arranged in the sliding seat (5), the sealing spring (63) is used for driving the baffle (52) to slide to the unsealed penetration hole (51), a magnetic sheet (62) is fixedly arranged on the baffle (52) corresponding to the electromagnet (61), and the electromagnet (61) is used for driving the baffle (52) to slide to the sealed penetration hole (51).

9. A structurally stable rotary tool changer according to claim 1, wherein: the utility model discloses a displacement sensor, including location cylinder (11), displacement sensor (53), base (1) are last to be provided with and to be used for detecting displacement sensor (53) of interval between stroke piece (112) and sliding seat (5), be provided with alarm (8) that are used for sounding the early warning when displacement sensor (53) detected data are less than appointed value on the piston rod of location cylinder (11).

10. A structurally stable rotary tool changer according to claim 1, wherein: the base (1) is provided with balance cylinder (12) corresponding to the positioning cylinder (11), the end of the piston rod of the balance cylinder (12) is fixedly provided with a rubber balance block (121), and the balance cylinder (12) and the positioning cylinder (11) are respectively arranged on two sides of the rotating center line of the cutter disc (3).