A DDR motor-driven gripper arm type tool magazine device

Abstract

The application relates to the technical field of numerical control machine tools, in particular to a DDR motor-driven clamping arm type tool magazine device which comprises a central shaft, a DDR motor is sleeved on the central shaft, and an angular contact ball bearing is arranged between the inner wall of the DDR motor and the central shaft; a tool jaw fixing disc is spacedly sleeved on the central shaft, and one end of the tool jaw fixing disc is fixedly connected with a rotor of the DDR motor and rotates with the rotor of the DDR motor; a magnetic grid reading head and a magnetic grid are matched and arranged at intervals and are used for measuring the rotating displacement of the magnetic grid along with the tool jaw fixing disc; and an air brake assembly is arranged at one end of the central shaft and at the side of the tool jaw fixing disc and is used for braking the tool jaw fixing disc. The DDR motor-driven clamping arm type tool magazine device can realize the rapid rotation of the tool magazine, accurate positioning and rapid tool changing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tools, in particular to a DDR motor driven clamping arm type tool magazine device. BACKGROUND

[0002] Most of the clamping arm type tool magazines on the market complete the tool changing task by using cam roller transmission pairs, such as the existing patent with the patent number 201020298838.0 and the patent name "Vertical drilling and tapping type machining center clamping arm type tool magazine tool selection indexing mechanism", which uses a motor chain wheel to drive a cam to make the roller installed at the edge of the rotating disc run in the groove set on the surface of the cam, so that the rotating tool disc connected with the rotating disc as a whole produces angular rotation; and such as the existing patent with the patent number 201420866028.9 and the patent name "Servo clamping arm type tool magazine", in which the transmission assembly drives the rotating disc and the rotating tool disc to rotate as a whole, the transmission assembly includes a servo motor, a speed reducer and a worm (cam structure), the servo motor is connected with the speed reducer through a shaft coupling, the speed reducer drives the worm to rotate, and the worm drives the indexing disc to rotate. Since the cam of the cam structure is in point or line contact, the pressure is relatively large, and the point or line contact is easy to wear; the contour processing technology of the cam is complex, the material hardness and rigidity are extremely high, strict heat treatment is required, the cost is extremely high, and the stroke of the cam mechanism is limited. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a DDR motor driven clamping arm type tool magazine device, which can reduce the wear of parts during use, improve the service life, and improve the accuracy of tool changing.

[0004] The technical solution for solving the above technical problem is as follows: a DDR motor driven clamping arm type tool magazine device, comprising a center shaft,

[0005] a DDR motor, which is sleeved on the center shaft, and the inner wall of the DDR motor is connected with the center shaft through an angular contact ball bearing;

[0006] a tool jaw fixing disc, which is sleeved on the center shaft at intervals, and one end of the tool jaw fixing disc is fixedly connected with the rotor of the DDR motor for rotating with the rotor of the DDR motor, and a plurality of clamping arm type tool jaws are uniformly distributed on the tool jaw fixing disc;

[0007] a magnetic grid, which is fixedly installed on the tool jaw fixing disc and rotates with the rotation of the tool jaw fixing disc;

[0008] a magnetic grid reader, which is installed on the center shaft through a reader mounting plate, and the magnetic grid reader and the magnetic grid are arranged at intervals for measuring the displacement of the magnetic grid with the rotation of the tool jaw fixing disc.

[0009] An air brake assembly is arranged at one end of the central shaft and at the side of the tool claw fixing disc, and is used for braking the tool claw fixing disc.

[0010] The DDR motor has high electromagnetic efficiency, large output torque and good dynamic performance, can drive the tool claw fixing disc and the whole tool magazine to rotate, and can quickly complete the tool changing action.

[0011] On the basis of the above technical scheme, the application can be further improved as follows.

[0012] Further, the DDR motor comprises a rotor and a stator, the rotor is sleeved on the central shaft, the inner wall of the rotor and the outer wall of the central shaft are connected through the angular contact ball bearing, the stator is sleeved on the rotor, the stator is fixedly connected with the pressing frame arranged at one end of the central shaft away from the air brake assembly, and the tool claw fixing disc is fixedly connected with one end of the rotor away from the pressing frame.

[0013] The rotor and the stator cooperate to realize the rotation of the rotor through electromagnetism, the output torque is large, the dynamic performance is good, and the tool changing action can be quickly completed.

[0014] Further, the air brake assembly comprises a brake ring, a brake top cover, a brake disc, a brake pad, a friction ring and a brake pad mounting seat, the brake pad mounting seat is fixedly connected with one end of the central shaft, the brake pad is sleeved on the brake pad mounting seat and the inner side of the brake pad is fixedly connected with the brake pad mounting seat, the friction ring is fixedly arranged on one side of the tool claw fixing disc close to the brake pad and close to the brake pad; the brake top cover is fixedly arranged on the side of the brake pad mounting seat away from the central shaft, the brake ring is sleeved outside the brake pad mounting seat and is sealingly and fixedly connected with the outer peripheral wall of the side of the brake top cover facing the brake pad mounting seat, the brake disc is arranged between the brake pad and the brake top cover, a sealed brake space is arranged between the brake disc and the brake top cover, a sealed brake release space is arranged between the brake disc and the brake ring, the brake space is connected with an external air pump through a brake air pipe, and the brake release space is connected with the external air pump through a brake release air pipe.

[0015] The beneficial effect of the further scheme is that: by feeding air into the brake space, the brake disc moves towards the brake pad, tightly holding the brake pad, the brake pad tightly abuts the friction plate, forcing the claw fixing disc to stop rotating, achieving the purpose of braking; by feeding air into the release space, the brake space exhausts, the brake disc moves away from the brake pad, releasing the brake, the claw fixing disc starts to rotate.

[0016] Further, one side of the brake disc towards the brake top cover is evenly distributed with a plurality of mounting grooves, and a spring is arranged in each mounting groove, one end of the spring abuts the groove bottom of the mounting groove, and the other end of the spring extends out of the mounting groove.

[0017] The beneficial effect of the further scheme is that: the spring is arranged on one side of the brake disc towards the brake top cover, which can ensure that there is space between the brake disc and the brake top cover, facilitating the quick pushing of the brake disc to hold the brake pad when feeding air into the brake space, and providing certain power for the movement of the brake disc to the brake pad during braking, making the braking more rapid.

[0018] Further, a gasket is arranged between the brake pad and the brake pad mounting seat.

[0019] The beneficial effect of the further scheme is that: the arrangement of the gasket can ensure the stability of the connection between the brake pad and the brake pad mounting seat.

[0020] Further, a brake passage communicating with the brake space is arranged in the brake top cover, a brake connection joint communicating with the brake passage is arranged on the brake top cover, and the brake connection joint communicates with the brake air pipe; an unbraking passage communicating with the unbraking space is arranged in the brake ring, an unbraking connection joint communicating with the unbraking passage is arranged on the brake ring, and the unbraking connection joint communicates with the unbraking air pipe.

[0021] The beneficial effect of the further scheme is that: the arrangement of the brake passage and the brake connection joint facilitates the communication with the brake air pipe, and the arrangement of the unbraking passage and the unbraking connection joint facilitates the connection with the unbraking air pipe.

[0022] Further, the end of the brake ring away from the brake top cover extends inwardly to form an inner extension wall, the brake disc is arranged between the inner extension wall and the brake top cover, the outer peripheral wall of the brake disc and the inner peripheral wall of the brake ring are in sliding sealing connection, and a sealing ring wall extending away from the brake top cover is arranged on one side of the brake disc away from the brake top cover.

[0023] The beneficial effect of the further scheme is that: the arrangement of the inner extension wall facilitates the arrangement of the unbraking space, and the arrangement of the sealing ring wall can further ensure the sealing property of the unbraking space.

[0024] Further, the outer peripheral wall of the brake disc and the outer peripheral wall of the sealing ring wall are both provided with a sealing ring.

[0025] The beneficial effect of the above further scheme is that the sealing ring ensures the sealing of the brake space and the unbrake space.

[0026] Further, the brake top cover is fixedly provided with an air brake protective cover.

[0027] The beneficial effect of the above further scheme is that the air brake protective cover can protect the entire air brake assembly. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a front view of the present application;

[0029] Figure 2 is a right view of the present application, in which the air brake protective cover is not drawn;

[0030] Figure 3 is a front view of the present application; Figure 1

[0031] Figure 4 is a front view of the present application; Figure 2

[0032] Figure 5 is a front view of the present application; Figure 2

[0033] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0034] 1, center shaft; 2, angular contact ball bearing; 3, cutter jaw fixing disc; 4, clamping arm type cutter jaw; 5, magnetic grid; 6, read head mounting plate; 7, rotor; 8, stator; 9, brake ring; 10, brake top cover; 11, brake disc; 12, brake pad; 13, friction ring; 14, brake pad mounting seat; 15, brake space; 16, unbrake space; 17, brake air pipe; 18, unbrake air pipe; 19, mounting groove; 20, spring; 21, gasket; 22, brake passage; 23, brake connecting joint; 24, unbrake passage; 25, unbrake connecting joint; 26, inner extension wall; 27, sealing ring wall; 28, sealing ring; 29, air brake protective cover; 30, first connecting head; 31, second connecting joint. DETAILED DESCRIPTION

[0035] The principles and features of the present application are described below in conjunction with the drawings, in which the examples are used to explain the present application and are not intended to limit the scope of the present application.

[0036] As Figures 1 to 5 ​​​As shown, the embodiment of the present application comprises a central shaft 1,

[0037] A DDR motor is sleeved on the central shaft 1, and the inner wall of the DDR motor is connected with the central shaft 1 through an angular contact ball bearing 2;

[0038] A tool jaw fixing disc 3 is sleeved on the central shaft 1 at intervals, and is fixedly connected with one end of a rotor 7 of the DDR motor for rotating with the rotor 7 of the DDR motor. The tool jaw fixing disc 3 is arranged at intervals with the central shaft 1, so that the tool jaw fixing disc 3 will not be affected due to abutting with the central shaft 1 in the process of rotation. A plurality of clamping arm type tool jaws 4 are uniformly distributed on the tool jaw fixing disc 3;

[0039] A magnetic grid 5 is fixedly installed on the tool jaw fixing disc 3, and rotates with the rotation of the tool jaw fixing disc 3;

[0040] A magnetic grid reading head is installed on the central shaft 1 through a reading head mounting plate 6, and is arranged at intervals with the magnetic grid 5 for measuring the rotational displacement amount of the magnetic grid 5 with the tool jaw fixing disc 3. The interval between the magnetic grid 5 and the magnetic grid reading head is 0.2mm;

[0041] An air brake assembly is arranged at one end of the central shaft 1 and at the side edge of the tool jaw fixing disc 3, and is used for braking the tool jaw fixing disc 3.

[0042] The DDR motor has high electromagnetic efficiency, large output torque and good dynamic performance. The angular contact ball bearing 2 with high rigidity is mounted, and the central shaft 1 with large size is arranged in the middle structure to drive the tool jaw fixing disc 3 and the whole tool magazine to rotate, so that the tool changing action can be quickly completed.

[0043] The magnetic grid 5 is installed on the tool jaw fixing disc 3, the magnetic grid reading head is installed on the central shaft 1 through the reading head mounting plate 6, the interval between the magnetic grid 5 and the reading head is 0.2mm, the upper NS level of the magnetic grid 5 generates magnetic fields with different directions, the magnetic grid reading head senses the change of the magnetic field in the process of following the magnetic field, and converts the change of the magnetic field into a digital signal output. The magnetic grid 5 rotates with the tool jaw fixing disc 3, so that the rotational displacement amount of the tool magazine can be efficiently measured, and the tool magazine can be accurately stopped at the tool changing position.

[0044] The structure adopts an air brake assembly. Since the air brake distance is short and the reaction is fast, the tool magazine can be quickly stopped at the tool changing position set by the system. When a new tool needs to be installed, the brake is released, and the tool magazine rotates to complete the tool changing instruction.

[0045] In the embodiment of the present application, the DDR motor comprises a rotor 7 and a stator 8 (the connection mode and working principle of the rotor 7 and the stator 8 of the DDR motor are conventional techniques in the art, which are not specifically described herein), the rotor 7 is sleeved on the central shaft 1, the inner wall of the rotor 7 and the outer wall of the central shaft 1 are connected through the angular contact ball bearing 2, the stator 8 is sleeved on the rotor 7, the stator 8 is fixedly connected with the pressing frame arranged at the end of the central shaft 1 away from the air brake assembly, and the claw fixing disc 3 is fixedly connected with the end of the rotor 7 away from the pressing frame. The rotor 7 and the stator 8 cooperate, the rotation of the rotor 7 is realized through electromagnetism, the output torque is large, the dynamic performance is good, and the tool changing action can be quickly completed. Specifically, one end of the central shaft 1 extends outward to form an outer ring, one end of the angular contact ball bearing 2 abuts against the outer ring, an R-shaped toothed lock nut is threadedly sleeved on the central shaft 1, the R-shaped toothed lock nut abuts against the other end of the angular contact ball bearing 2, so that the locking and positioning of the angular contact ball bearing 2 are realized. The rotor 7 is matched and positioned with the angular contact ball bearing 2.

[0046] In the embodiment of the present application, the air brake assembly comprises a brake ring 9, a brake top cover 10, a brake disc 11, a brake pad 12, a friction ring 13 and a brake pad mounting seat 14, the brake pad mounting seat 14 is fixedly connected with one end of the central shaft 1, the connection mode includes but is not limited to threaded connection, screw connection and clamping, etc., the brake pad 12 is sleeved on the brake pad mounting seat 14 and the inner side of the brake pad 12 is fixedly connected with the brake pad mounting seat 14, a gasket 21 is arranged between the brake pad 12 and the brake pad mounting seat 14, specifically, the brake pad 12 is fixed on the brake pad mounting seat 14 through bolts, the arrangement of the gasket 21 can ensure the stability of the connection between the brake pad 12 and the brake pad mounting seat 14, the friction ring 13 is fixedly arranged on the side of the claw fixing disc 3 close to the brake pad 12 and close to the brake pad 12; the brake top cover 10 is fixedly arranged on the side of the brake pad mounting seat 14 away from the central shaft 1, the brake top cover 10 is fixedly connected with the brake pad mounting seat 14 through screws, the brake ring 9 is sleeved outside the brake pad mounting seat 14 and is sealingly and fixedly connected with the outer peripheral wall of the side of the brake top cover 10 facing the brake pad mounting seat 14, the brake disc 11 is arranged between the brake pad 12 and the brake top cover 10, a sealed brake space 15 is arranged between the brake disc 11 and the brake top cover 10, a sealed brake release space 16 is arranged between the brake disc 11 and the brake ring 9, the brake space 15 is connected with an external air pump through a brake air pipe 17, and the brake release space 16 is connected with an external air pump through a brake release air pipe 18. By feeding air into the brake space 15, the brake disc 11 moves towards the brake pad 12, thereby tightly holding the brake pad 12, the outer periphery of the brake pad 12 tightly abuts against the friction plate, the claw fixing disc 3 is forced to stop rotating, and the braking purpose is achieved; by feeding air into the brake release space 16 and discharging air from the brake space 15, the brake disc 11 moves away from the brake pad 12, thereby releasing the brake, and the claw fixing disc 3 starts to rotate.

[0047] Specifically, a plurality of mounting grooves 19 are uniformly distributed on one side of the brake disc 11 facing the brake top cover 10, the plurality of mounting grooves 19 are arranged in a circular array with the center of the brake disc 11 as the center, a spring 20 is arranged in each mounting groove 19, one end of the spring 20 abuts against the groove bottom of the mounting groove 19, and the other end of the spring 20 extends out of the mounting groove 19, the arrangement of the spring 20 can ensure that there is space between the brake disc 11 and the brake top cover 10, so that the brake disc 11 can be quickly pushed to hold the brake pad 12 when air is fed into the brake space 15, and on the other hand, the spring 20 can provide a certain power for the movement of the brake disc 11 to the brake pad 12 during braking, so that the braking is faster.

[0048] Preferably, the brake top cover 10 is provided with a brake passage 22 communicating with the brake space 15, and the brake top cover 10 is provided with a brake connecting joint 23 communicating with the brake passage 22, preferably, the brake connecting joint 23 is arranged on the outer peripheral wall of the brake top cover 10, and the brake connecting joint 23 communicates with the brake air pipe 17; the brake ring 9 is provided with a release passage 24 communicating with the release space 16, and the brake ring 9 is provided with a release connecting joint 25 communicating with the release passage 24, preferably, the release connecting joint 25 is arranged on the outer peripheral wall of the brake ring 9, and the release connecting joint 25 communicates with the release air pipe 18. The arrangement of the brake passage 22 and the brake connecting joint 23 facilitates the communication with the brake air pipe 17, and the arrangement of the release passage 24 and the release connecting joint 25 facilitates the connection with the release air pipe 18.

[0049] In the embodiment of the present application, in order to facilitate the arrangement of the brake air pipe 17 and the release air pipe 18, the central shaft 1 is provided with a through hole penetrating through both ends of the central shaft 1, the brake pad mounting seat 14 and the middle part of the brake top cover 10 are provided with through holes, the through hole of the central shaft 1 is in communication with the through holes of the brake pad mounting seat 14 and the brake top cover 10, the brake air pipe 17 connected with the brake connecting joint 23 and the release air pipe 18 connected with the release connecting joint 25 pass through the through holes of the brake top cover 10, the through holes of the brake pad mounting seat 14 and the through hole of the central shaft 1 in sequence and extend to the end of the central shaft 1 away from the air brake assembly, and the first connecting joint 30 and the second connecting joint 31 are arranged on the pressing frame and used for connecting the other ends of the brake air pipe 17 and the release air pipe 18 and the external air pump connecting pipe respectively.

[0050] The end of the brake ring 9 away from the brake top cover 10 extends inward to form an inner extension wall 26, the brake disc 11 is arranged between the inner extension wall 26 and the brake top cover 10, the outer peripheral wall of the brake disc 11 is in sliding sealing connection with the inner peripheral wall of the brake ring 9, and the brake disc 11 is provided with a sealing ring wall 27 extending away from the brake top cover 10 on the side away from the brake top cover 10, and the outer peripheral wall of the sealing ring wall 27 is in sliding sealing connection with the inner peripheral wall of the inner extension wall 26. The arrangement of the inner extension wall 26 facilitates the arrangement of the release space 16, and the arrangement of the sealing ring wall 27 can further ensure the sealing property of the release space 16.

[0051] In the embodiment of the present application, the outer peripheral wall of the brake disc 11 and the outer peripheral wall of the sealing ring wall 27 are both provided with a sealing ring 28, and the arrangement of the sealing ring 28 ensures the sealing property of the brake space 15 and the release space 16. The air brake protective cover 29 is fixedly arranged on the brake top cover 10, and the arrangement of the air brake protective cover 29 can protect the entire air brake assembly.

[0052] The present application can realize the series of actions of fast rotation, accurate positioning and quick tool changing of the tool magazine through the above-mentioned DDR motor, magnetic rack 5 and air brake assembly.

[0053] In the description of the present application, it should be understood that the terms "center", "length", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the systems or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0057] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A DDR motor-driven clamping arm tool magazine device, characterized in that, Including the central axis (1), A DDR motor is mounted on the central shaft (1), and the inner wall of the DDR motor is connected to the central shaft (1) by an angular contact ball bearing (2). The cutter claw fixing plate (3) is spaced on the central shaft (1), and the cutter claw fixing plate (3) is fixedly connected to one end of the rotor (7) of the DDR motor for rotating with the rotor (7) of the DDR motor. Multiple clamping arm type cutter claws (4) are evenly distributed on the cutter claw fixing plate (3). A magnetic grating (5) is fixedly mounted on the cutter claw fixing plate (3), and the magnetic grating (5) rotates as the cutter claw fixing plate (3) rotates; A magnetic grating reading head is mounted on the central shaft (1) via a reading head mounting plate (6). The magnetic grating reading head is spaced and matched with the magnetic grating (5) to measure the displacement of the magnetic grating (5) as the claw fixing disk (3) rotates. An air brake assembly is provided at one end of the central shaft (1) and on the side of the cutter claw fixing plate (3) for braking the cutter claw fixing plate (3). The air brake assembly includes a brake ring (9), a brake top cover (10), a brake disc (11), a brake pad (12), a friction ring (13), and a brake pad mounting seat (14). The brake pad mounting seat (14) is fixedly connected to one end of the central shaft (1). The brake pad (12) is sleeved on the brake pad mounting seat (14), and the inner side of the brake pad (12) is fixedly connected to the brake pad mounting seat (14). The friction ring (13) is fixedly disposed on the side of the pawl fixing plate (3) near the brake pad (12) and close to the brake pad (12). The brake pad mounting seat (14) is fixedly disposed on the side away from the central shaft (1). The vehicle roof (10) has a brake ring (9) sleeved on the brake pad mounting seat (14) and sealed and fixedly connected to the outer peripheral wall of the brake roof (10) facing the brake pad mounting seat (14). The brake disc (11) is located between the brake pad (12) and the brake roof (10). A sealed braking space (15) is provided between the brake disc (11) and the brake roof (10). A sealed release space (16) is provided between the brake disc (11) and the brake ring (9). The braking space (15) is connected to an external air pump through a brake air pipe (17). The release space (16) is connected to an external air pump through a release air pipe (18). The brake disc (11) has a plurality of mounting slots (19) evenly distributed on the side facing the brake top cover (10). Each mounting slot (19) is provided with a spring (20). One end of the spring (20) abuts against the bottom of the mounting slot (19), and the other end of the spring (20) extends out of the mounting slot (19). A gasket (21) is provided between the brake pad (12) and the brake pad mounting seat (14).

2. The DDR motor-driven clamping arm tool magazine device according to claim 1, characterized in that, The DDR motor includes a rotor (7) and a stator (8). The rotor (7) is sleeved on the central shaft (1). The inner wall of the rotor (7) is connected to the outer wall of the central shaft (1) through the angular contact ball bearing (2). The stator (8) is sleeved on the rotor (7). The stator (8) is fixedly connected to a pressure frame located at one end of the central shaft (1) away from the air brake assembly. The cutter claw fixing plate (3) is fixedly connected to one end of the rotor (7) away from the pressure frame.

3. The DDR motor-driven clamping arm tool magazine device according to claim 1, characterized in that, The brake top cover (10) is provided with a brake channel (22) communicating with the brake space (15). The brake top cover (10) is provided with a brake connection joint (23) communicating with the brake channel (22). The brake connection joint (23) is connected with the brake air pipe (17). The brake ring (9) is provided with a release channel (24) communicating with the release space (16). The brake ring (9) is provided with a release connection joint (25) communicating with the release channel (24). The release connection joint (25) is connected with the release air pipe (18).

4. A DDR motor-driven clamping arm tool magazine device according to claim 3, characterized in that, The brake ring (9) extends inward from the end away from the brake top cover (10) to form an inner wall (26). The brake disc (11) is disposed between the inner wall (26) and the brake top cover (10). The outer peripheral wall of the brake disc (11) is slidably sealed to the inner peripheral wall of the brake ring (9). A sealing ring wall (27) extending away from the brake top cover (10) is provided on the side of the brake disc (11). The outer peripheral wall of the sealing ring wall (27) is slidably sealed to the inner peripheral wall of the inner wall (26).

5. A DDR motor-driven clamping arm tool magazine device according to claim 4, characterized in that, A sealing ring (28) is provided on the outer peripheral wall of the brake disc (11) and on the outer peripheral wall of the sealing ring wall (27).

6. A DDR motor-driven clamping arm tool magazine device according to any one of claims 1 to 5, characterized in that, An air brake protective cover (29) is fixedly installed on the brake top cover (10).

Images