Casting cleaning equipment

Abstract

The utility model relates to casting cleaning equipment, and belongs to the technical field of improvement of casting production equipment. Comprising a base and a rotating table A which is installed on the base and used for driving a lower hinge installation base to rotate, a first joint arm and a first joint assembly are jointly hinged to the lower hinge installation base at a first hinge point, and the first joint assembly and the telescopic end of a first oil cylinder are hinged to a second hinge point. The first joint assembly and the supporting rod are hinged to a third hinge point, the first joint arm and the supporting rod are arranged in parallel, the top end of the supporting rod is hinged to the second joint arm, and the third joint assembly is hinged to the front end of the second joint arm. The first joint arm, the second joint arm and the second joint assembly are jointly hinged to a fourth hinge point, the second joint assembly and the first connecting rod are hinged to a fifth hinge point, and the second joint assembly and the second connecting rod are hinged to a sixth hinge point. The pneumatic hammer has the advantages that the clamping jaw assembly and the pneumatic hammer are used in a combined mode, and multiple purposes are achieved.

Description

Technical Field

[0001] The utility model relates to a casting cleaning device, belonging to the technical field of improvement of casting production equipment. Background Art

[0002] In a foundry, a pneumatic impact hammer is used to remove the riser of a large casting. When the pneumatic impact hammer strikes a casting with a lower riser position, the pneumatic impact hammer can be manually pushed to adjust the angle to align with the gating and risering system. However, for some large castings, the position of the gating and risering system is at a high place, and it is impossible for people to adjust the angle of the pneumatic impact hammer.

[0003] The utility model with the patent number CN202320611959.3 discloses a new type of gating and risering pneumatic impact hammer. It includes a pneumatic impact hammer main body, a lower rotating disc and an upper rotating disc. The upper rotating disc and the lower rotating disc are connected by a rotating support, that is, the upper rotating disc and the lower rotating disc are in a coaxial rotation relationship. The bottom end of the lower rotating disc is hinged with the pneumatic impact hammer main body. The top of the upper rotating disc is provided with a top sliding sleeve that slidably cooperates with a horizontal support cross beam. The lower rotating disc is hinged with an amplitude modulation cylinder, and the other end of the amplitude modulation cylinder is hinged to the tail of the pneumatic impact hammer main body.

[0004] Although the above patent can achieve the exhaust function, the current technology has incomplete considerations and has the following drawbacks: It is impossible to use the jaw assembly and the pneumatic impact hammer jointly, and it does not meet the requirement of multi-purpose of one machine.

[0005] To solve one of the above problems, there is an urgent need for a casting cleaning device. Summary of the Utility Model

[0006] According to the deficiencies in the above prior art, the technical problem to be solved by the utility model is: How to realize the joint use of the jaw assembly and the pneumatic impact hammer. The jaw assembly is an actuating element, which can grab the sand box, turn it over for demoulding, and cut off the runner; and a pneumatic impact hammer is installed on the jaw assembly, which can punch off the riser on the casting, meeting the requirement of multi-purpose of one machine. For this purpose, a casting cleaning device is provided.

[0007] The casting cleaning equipment described in the utility model includes a base and a rotating table A installed on the base for driving the lower articulated mounting seat to rotate. It is characterized in that: it further includes a first joint assembly, a second joint assembly, and a first joint arm hinged to the lower articulated mounting seat. The first joint assembly has three hinge points arranged in a triangle, namely a first hinge point, a second hinge point, and a third hinge point. The first joint arm and the first joint assembly are jointly hinged to the lower articulated mounting seat at the first hinge point. A second oil cylinder for driving the first joint arm to swing reciprocally around the first hinge point and a first oil cylinder for driving the first joint assembly to swing reciprocally around the first hinge point are installed on the lower articulated mounting seat. The first joint assembly is hinged to the telescopic end of the first oil cylinder at the second hinge point. The first joint assembly is hinged to a support rod at the third hinge point. The first joint arm is arranged parallel to the support rod, and the top end of the support rod is hinged to the second joint arm. A third joint assembly is hinged to the front end of the second joint arm. The second joint assembly has three hinge points arranged in a triangle, namely a fourth hinge point, a fifth hinge point, and a sixth hinge point. The first joint arm and the second joint arm are jointly hinged to the second joint assembly at the fourth hinge point. The second joint assembly is hinged to a first connecting rod at the fifth hinge point. The second joint assembly is hinged to a second connecting rod at the sixth hinge point. The other ends of the first connecting rod and the second connecting rod are respectively hinged to the lower articulated mounting seat and the third joint assembly. The second connecting rod is located above the second joint arm. A clamping jaw assembly is installed on the third joint assembly, and an air impact hammer is installed on the clamping jaw assembly.

[0008] The lower articulated mounting seat and the control room are both installed on the rotating table A, and the rotating table A is used to control the rotation actions of the lower articulated mounting seat, the control room, and the first joint arm. The first oil cylinder and the second oil cylinder perform opposite actions to jointly control the actions of the first joint arm and the support rod. The connecting rod structure formed by the first joint arm, the support rod, the first joint assembly, and the second joint arm is used to control the lifting of the clamping jaw assembly. The clamping jaw assembly is an execution element that can grab the sand box, turn it over for demoulding, and cut off the runner; and an air impact hammer is installed on the clamping jaw assembly, which can cut off the riser on the casting. It realizes multiple functions in one machine.

[0009] Preferably, it further includes an upper articulated mounting seat hinged to the third joint assembly. The middle part of the upper articulated mounting seat is hinged to the third joint assembly through a hinge shaft A. A third oil cylinder for driving the upper articulated mounting seat to rotate around the hinge shaft A is installed on the third joint assembly. The cylinder body of the third oil cylinder is hinged to the third joint assembly, and the telescopic end of the third oil cylinder is hinged to the upper part of the upper articulated mounting seat. The upper articulated mounting seat is connected to the clamping jaw assembly through a rotating table B. The rotating table B controls the rotation action of the entire clamping jaw assembly, and the third oil cylinder can drive the clamping jaw assembly to adjust the tilt angle, improving the convenience of operation and making the operation range wider.

[0010] Preferably, the jaw assembly includes a connecting seat connected to the rotary table B. A left jaw monomer and a right jaw monomer which are symmetrically arranged are hinged to the bottom of the connecting seat. A jaw opening and closing driving oil cylinder for driving the opening and closing of the right jaw monomer is installed on the left jaw monomer. A linkage connecting rod is also installed between the left jaw monomer and the right jaw monomer. Two ends of the linkage connecting rod are respectively hinged to the left jaw monomer and the right jaw monomer. The left jaw monomer and the right jaw monomer are linked through the linkage connecting rod. The pneumatic impact hammer is installed on the left jaw monomer.

[0011] By controlling the extension of the jaw opening and closing driving oil cylinder, the right jaw monomer approaches the left jaw monomer. At the same time, the right jaw monomer drives the left jaw monomer to approach the right jaw monomer through the linkage connecting rod, completing the closing of the jaw assembly and achieving the purpose of clamping.

[0012] By controlling the retraction of the jaw opening and closing driving oil cylinder, the right jaw monomer moves in a direction away from the left jaw monomer. At the same time, the right jaw monomer drives the left jaw monomer to move in a direction away from the right jaw monomer through the linkage connecting rod, completing the opening of the jaw assembly and achieving the purpose of releasing the jaw assembly. The jaw assembly is an actuating element and can perform operations such as grasping the sand box, flipping for demolding, and cutting off the runner.

[0013] Preferably, the cylinder bodies of the first oil cylinder and the second oil cylinder are both hinged to the lower hinged mounting seat, and the second oil cylinder is above the first oil cylinder. The telescopic end of the second oil cylinder is hinged to the middle of the first joint arm.

[0014] Preferably, the second connecting rod is an existing buffer connecting rod, which can reduce the impact load to a certain extent under the working condition.

[0015] Preferably, a control room is also installed on the rotary table A on one side of the lower hinged mounting seat.

[0016] The operator controls the actions of the first oil cylinder, the second oil cylinder, the first rotary motor, the third oil cylinder, the jaw opening and closing driving oil cylinder, the second rotary motor, and the pneumatic impact hammer through the joystick in the control room. The control room can be equipped with an air conditioner, enabling the operator to operate the equipment in a cool environment even in a hot foundry workshop, optimizing the working environment.

[0017] Preferably, the rotary table A and the rotary table B are respectively driven by the first rotary motor and the second rotary motor.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] For the casting cleaning equipment described in the present utility model, the lower articulated mounting seat and the control room are both installed on the rotating table A, and the rotating table A is used to control the rotation actions of the lower articulated mounting seat, the control room and the first articulated arm. The first oil cylinder and the second oil cylinder perform opposite actions to jointly control the actions of the first articulated arm and the support rod. The connecting rod structure formed by the first articulated arm, the support rod, the first joint assembly and the second articulated arm is used to control the lifting of the jaw assembly.

[0020] For the casting cleaning equipment described in the present utility model, the jaw assembly and the pneumatic hammer are used in combination. The jaw assembly is an actuator that can grab the sand box, turn it over for demolding, and cut off the runner; and a pneumatic hammer is installed on the jaw assembly, which can cut off the riser on the casting to meet the requirement of multi-purpose use of one machine.

[0021] For the casting cleaning equipment described in the present utility model, the rotating table B controls the rotation action of the entire jaw assembly, and the third oil cylinder can drive the jaw assembly to adjust the tilt angle, improving the convenience of operation and making the operation range wider. Brief Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0023] Figure 1 It is a schematic structure of the present utility model Figure 1 ;

[0024] Figure 2 It is a schematic structure of the present utility model Figure 2 ;

[0025] Figure 3 It is a structural diagram of the jaw assembly.

[0026] In the figure: 1. Base 2. Rotating table A 3. First articulated arm 4. Second articulated arm 5. First connecting rod 6. Second connecting rod 7. Support rod 8. First joint assembly 9. Second joint assembly 10. Third joint assembly 11. First oil cylinder 12. Second oil cylinder 13. Third oil cylinder 14. Jaw opening and closing drive oil cylinder 15. First rotary motor 16. Second rotary motor 17. Jaw assembly 17.1. Left jaw monomer 17.2. Right jaw monomer 17.3. Linking connecting rod 17.4. Connecting seat 18. Pneumatic hammer 19. Lower articulated mounting seat 20. Control room 21. Upper articulated mounting seat 22. Rotating table B. Detailed Embodiments

[0027] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0028] Embodiment 1, as Figure 1-2 As shown, the casting cleaning equipment comprises a base 1 and a rotating table A2 installed on the base 1 for driving the lower articulated mounting seat 19 to rotate, and also comprises a first joint assembly 8, a second joint assembly 9 and a first joint arm 3 articulated with the lower articulated mounting seat 19, the first joint assembly 8 has three hinge points arranged in a triangle, namely a first hinge point, a second hinge point and a third hinge point, the first joint arm 3 and the first joint assembly 8 are jointly articulated with the lower articulated mounting seat 19 at the first hinge point, the lower articulated mounting seat 19 is provided with a second oil cylinder 12 for driving the first joint arm 3 to swing back and forth around the first hinge point and a first oil cylinder 11 for driving the first joint assembly 8 to swing back and forth around the first hinge point, the first joint assembly 8 and the telescopic end of the first oil cylinder 11 are articulated at the second articulated point, the first joint assembly 8 and the support rod 7 are articulated at the third articulated point. point, the first articulated arm 3 is arranged parallel to the support rod 7, and the top end of the support rod 7 is hinged on the second articulated arm 4, the front end of the second articulated arm 4 is hinged with the third articulated assembly 10, and the second articulated assembly 9 has three hinge points arranged in a triangle, namely the fourth articulated point, the fifth articulated point and the sixth articulated point, the first articulated arm 3 and the second articulated arm 4 are jointly hinged with the second articulated assembly 9 at the fourth articulated point, the second articulated assembly 9 and the first connecting rod 5 are hinged at the fifth articulated point, the second articulated assembly 9 and the second connecting rod 6 are hinged at the sixth articulated point, the other ends of the first connecting rod 5 and the second connecting rod 6 are hinged with the lower articulated mounting seat 19 and the third articulated assembly 10 respectively, the second connecting rod 6 is above the second articulated arm 4, the third articulated assembly 10 is installed with a clamping jaw assembly 17, and the clamping jaw assembly 17 is installed with an air hammer 18.

[0029] The lower articulated mounting seat 19 and the control room 20 are both mounted on the rotating table A2, and the rotating table A2 is used to control the rotation of the lower articulated mounting seat 19, the control room 20 and the first joint arm 3. The first oil cylinder 11 and the second oil cylinder 12 perform opposite actions to coordinately control the actions of the first joint arm 3 and the support rod 7. The connecting rod structure formed by the first joint arm 3, the support rod 7, the first joint assembly 8 and the second joint arm 4 achieves the purpose of controlling the lifting and lowering of the clamping jaw assembly 17. The clamping jaw assembly is an actuator that can grab the sand box, flip the demoulding, and clamp off the runner; and an air hammer 18 is installed on the clamping jaw assembly 17 to punch off the riser on the casting. One machine can be used for multiple purposes.

[0030] Embodiment 2, as Figure 1-3 shown, the casting cleaning device includes a base 1 and a rotating table A2 installed on the base 1 for driving the lower articulated mounting seat 19 to rotate. It further includes a first joint assembly 8, a second joint assembly 9, and a first joint arm 3 hinged to the lower articulated mounting seat 19. The first joint assembly 8 has three hinged points arranged in a triangle, namely a first hinged point, a second hinged point, and a third hinged point. The first joint arm 3 and the first joint assembly 8 are jointly hinged to the lower articulated mounting seat 19 at the first hinged point. A second oil cylinder 12 for driving the first joint arm 3 to swing reciprocally around the first hinged point and a first oil cylinder 11 for driving the first joint assembly 8 to swing reciprocally around the first hinged point are installed on the lower articulated mounting seat 19. The first joint assembly 8 is hinged to the telescopic end of the first oil cylinder 11 at the second hinged point. The first joint assembly 8 is hinged to the support rod 7 at the third hinged point. The first joint arm 3 is arranged parallel to the support rod 7, and the top end of the support rod 7 is hinged to the second joint arm 4. A third joint assembly 10 is hinged to the front end of the second joint arm 4. The second joint assembly 9 has three hinged points arranged in a triangle, namely a fourth hinged point, a fifth hinged point, and a sixth hinged point. The first joint arm 3 and the second joint arm 4 are jointly hinged to the second joint assembly 9 at the fourth hinged point. The second joint assembly 9 is hinged to the first connecting rod 5 at the fifth hinged point. The second joint assembly 9 is hinged to the second connecting rod 6 at the sixth hinged point. The other ends of the first connecting rod 5 and the second connecting rod 6 are respectively hinged to the lower articulated mounting seat 19 and the third joint assembly 10. The second connecting rod 6 is located above the second joint arm 4. A jaw assembly 17 is installed on the third joint assembly 10, and a pneumatic impact hammer 18 is installed on the jaw assembly 17.

[0031] Further, it further includes an upper articulated mounting seat 21 hinged to the third joint assembly 10. The middle part of the upper articulated mounting seat 21 is hinged to the third joint assembly 10 through a hinge shaft A. A third oil cylinder 13 for driving the upper articulated mounting seat 21 to rotate around the hinge shaft A is installed on the third joint assembly 10. The cylinder body of the third oil cylinder 13 is hinged to the third joint assembly 10, and the telescopic end of the third oil cylinder 13 is hinged to the upper part of the upper articulated mounting seat 21. The upper articulated mounting seat 21 and the jaw assembly 17 are connected through a rotating table B22. The rotating table B22 controls the rotation action of the entire jaw assembly, and the third oil cylinder 13 can drive the jaw assembly 17 to adjust the tilt angle, improving the operation convenience and making the operation range wider.

[0032] Further, the jaw assembly 17 includes a connecting seat 17.4 connected to the rotary table B22. A left jaw monomer 17.1 and a right jaw monomer 17.2 which are symmetrically arranged are hinged to the bottom of the connecting seat 17.4. A jaw opening and closing drive oil cylinder 14 for driving the opening and closing of the right jaw monomer 17.2 is installed on the left jaw monomer 17.1. A linkage connecting rod 17.3 is further installed between the left jaw monomer 17.1 and the right jaw monomer 17.2. Two ends of the linkage connecting rod 17.3 are respectively hinged to the left jaw monomer 17.1 and the right jaw monomer 17.2. The left jaw monomer 17.1 and the right jaw monomer 17.2 are linked through the linkage connecting rod 17.3. The pneumatic impact hammer 18 is installed on the left jaw monomer 17.1.

[0033] Two ends of the jaw opening and closing drive oil cylinder 14 are respectively hinged to the left jaw monomer 17.1 and the right jaw monomer 17.2.

[0034] By controlling the extension of the jaw opening and closing drive oil cylinder 14, the right jaw monomer 17.2 moves closer to the left jaw monomer 17.1. At the same time, the right jaw monomer 17.2 drives the left jaw monomer 17.1 to move closer to the right jaw monomer 17.2 through the linkage connecting rod 17.3, completing the closing of the jaw assembly 17 and achieving the purpose of clamping.

[0035] By controlling the retraction of the jaw opening and closing drive oil cylinder 14, the right jaw monomer 17.2 moves in a direction away from the left jaw monomer 17.1. At the same time, the right jaw monomer 17.2 drives the left jaw monomer 17.1 to move in a direction away from the right jaw monomer 17.2 through the linkage connecting rod 17.3, completing the opening of the jaw assembly 17 and achieving the purpose of releasing the jaw assembly 17. The jaw assembly is an actuating element and can be used for grasping the sand box, flipping and demolding, and clamping off the runner.

[0036] Further, the cylinder bodies of the first oil cylinder 11 and the second oil cylinder 12 are both hinged to the lower hinged mounting seat 19, and the second oil cylinder 12 is above the first oil cylinder 11. The telescopic end of the second oil cylinder 12 is hinged to the middle of the first joint arm 3.

[0037] Further, the second connecting rod 6 can be an existing buffer connecting rod, which can reduce the impact load under the working state to a certain extent.

[0038] Further, a control room 20 is also installed on the rotary table A2 on one side of the lower hinged mounting seat 19. An operator controls the actions of the first oil cylinder 11, the second oil cylinder 12, the first rotary motor 15, the third oil cylinder 13, the jaw opening and closing drive oil cylinder 14, the second rotary motor 16 and the pneumatic impact hammer 18 through a joystick in the control room. The control room can be equipped with an air conditioner so that the operator can operate the equipment in a cool environment even in a stuffy foundry workshop, optimizing the working environment.

[0039] Furthermore, the rotary table A2 and the rotary table B22 are respectively driven by a first rotary motor 15 and a second rotary motor 16.

[0040] For the casting cleaning equipment of the present utility model, the lower articulated mounting seat and the control room are both installed on the rotary table A, and the rotary table A is used to control the rotation actions of the lower articulated mounting seat, the control room and the first articulated arm. The first oil cylinder and the second oil cylinder perform opposite actions to jointly control the actions of the first articulated arm and the support rod. The linkage structure formed by the first articulated arm, the support rod, the first joint assembly and the second articulated arm is used to control the lifting of the gripper assembly.

[0041] For the casting cleaning equipment of the present utility model, the gripper assembly and the pneumatic hammer are used in combination. The gripper assembly is an actuating element that can grab the sand box, turn it over for demolding, and cut off the runner; and a pneumatic hammer is installed on the gripper assembly, which can cut off the riser on the casting, realizing multiple functions in one machine.

[0042] For the casting cleaning equipment of the present utility model, the rotary table B controls the rotation action of the entire gripper assembly, and the third oil cylinder can drive the gripper assembly to adjust the tilt angle, improving the convenience of operation and making the operation range wider.

[0043] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

[0044] Details not described in the present invention are all well-known technologies to those skilled in the art.

Claims

1. A casting cleaning device, comprising a base (1) and a rotary table A (2) installed on the base (1) for driving the lower hinged mounting seat (19) to rotate, characterized in that: It further includes a first joint assembly (8), a second joint assembly (9), and a first joint arm (3) hinged to the lower hinged mounting seat (19). The first joint assembly (8) has three hinged points arranged in a triangle, namely a first hinged point, a second hinged point, and a third hinged point. The first joint arm (3) and the first joint assembly (8) are jointly hinged to the lower hinged mounting seat (19) at the first hinged point. A second oil cylinder (12) for driving the first joint arm (3) to swing reciprocally around the first hinged point and a first oil cylinder (11) for driving the first joint assembly (8) to swing reciprocally around the first hinged point are mounted on the lower hinged mounting seat (19). The first joint assembly (8) is hinged to the telescopic end of the first oil cylinder (11) at the second hinged point. The first joint assembly (8) is hinged to the support rod (7) at the third hinged point. The first joint arm (3) is arranged parallel to the support rod (7), and the top end of the support rod (7) is hinged to the second joint arm (4). A third joint assembly (10) is hinged to the front end of the second joint arm (4). The second joint assembly (9) has three hinged points arranged in a triangle, namely a fourth hinged point, a fifth hinged point, and a sixth hinged point. The first joint arm (3) and the second joint arm (4) are jointly hinged to the second joint assembly (9) at the fourth hinged point. The second joint assembly (9) is hinged to the first connecting rod (5) at the fifth hinged point. The second joint assembly (9) is hinged to the second connecting rod (6) at the sixth hinged point. The other ends of the first connecting rod (5) and the second connecting rod (6) are respectively hinged to the lower hinged mounting seat (19) and the third joint assembly (10). The second connecting rod (6) is located above the second joint arm (4). A jaw assembly (17) is mounted on the third joint assembly (10), and an air impact hammer (18) is mounted on the jaw assembly (17).

2. The casting cleaning equipment according to claim 1, wherein, It further includes an upper hinged mounting seat (21) hinged to the third joint assembly (10). The middle part of the upper hinged mounting seat (21) is hinged to the third joint assembly (10) through a hinge shaft A. A third oil cylinder (13) for driving the upper hinged mounting seat (21) to rotate around the hinge shaft A is mounted on the third joint assembly (10). The cylinder body of the third oil cylinder (13) is hinged to the third joint assembly (10), and the telescopic end of the third oil cylinder (13) is hinged to the upper part of the upper hinged mounting seat (21). The upper hinged mounting seat (21) is connected to the jaw assembly (17) through a rotating table B (22).

3. The casting cleaning equipment according to claim 2, characterized in that, The jaw assembly (17) includes a connecting seat (17.4) connected to the rotary table B (22). A left jaw unit (17.1) and a right jaw unit (17.2) which are symmetrically arranged are hinged to the bottom of the connecting seat (17.4). A jaw opening and closing drive oil cylinder (14) for driving the opening and closing of the right jaw unit (17.2) is installed on the left jaw unit (17.1). A linkage connecting rod (17.3) is further installed between the left jaw unit (17.1) and the right jaw unit (17.2). Two ends of the linkage connecting rod (17.3) are respectively hinged to the left jaw unit (17.1) and the right jaw unit (17.2). The left jaw unit (17.1) and the right jaw unit (17.2) are linked through the linkage connecting rod (17.3). The pneumatic impact hammer (18) is installed on the left jaw unit (17.1).

4. The casting cleaning equipment according to claim 3, characterized in that, The cylinder bodies of the first oil cylinder (11) and the second oil cylinder (12) are both hinged to the lower hinged mounting seat (19), and the second oil cylinder (12) is above the first oil cylinder (11). The telescopic end of the second oil cylinder (12) is hinged to the middle of the first articulated arm (3).

5. The casting cleaning equipment according to claim 4, wherein, The second connecting rod (6) is a buffer connecting rod.

6. The casting cleaning equipment according to claim 5, characterized in that A control room (20) is further installed on the rotary table A (2) on one side of the lower hinged mounting seat (19).

7. The casting cleaning equipment according to claim 6, characterized in that, The rotary table A (2) and the rotary table B (22) are respectively driven by a first rotary motor (15) and a second rotary motor (16).

Images