Cradle rotary table

Abstract

The utility model discloses a cradle rotary table which comprises a cradle body, a C-axis motor fixed in the middle of the cradle body and an A-axis motor fixedly connected with a swing arm of the cradle body, the A-axis motor is provided with a wiring board, and a cable connected with the wiring board penetrates through the A-axis motor and a wiring groove in the swing arm to be connected with the C-axis motor; a limiting groove is formed in the outer side wall of the tail end of the swing arm, a limiting block is arranged in the limiting groove, a wire passing hole is formed in the limiting block, and a cable penetrates through the wire passing hole. According to the utility model, cable routing is positioned through the limiting block, and the phenomena of contact friction, distortion, winding, knotting and the like of the cable in the rotation process of the cradle body can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, and in particular to a cradle turntable. Background Technology

[0002] Cradle turntables are key equipment in modern high-end manufacturing fields, especially in precision machining, semiconductor manufacturing, aerospace component testing, medical device manufacturing, and high-precision automated assembly. Their core function is to provide high-precision, high-dynamic-performance rotational motion around two mutually perpendicular axes (usually called the A-axis and C-axis) to achieve precise adjustment and positioning of complex spatial postures. To meet the stringent requirements of these applications for accuracy, speed, reliability, and maintenance-free operation, the A-axis can be set as a brushless motor, and the C-axis as a drive motor. Since the drive motor needs to be connected to power via a cable, the cable of the drive motor may come into contact with the magnetic track of the brushless motor during the operation of the cradle turntable, thereby damaging the cable. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a cradle turntable. The cable can be easily connected to the terminal block by the limiting block. When the A-axis motor drives the cradle body to rotate, the cable can be passed through the cable hole of the limiting block to prevent the cable from being damaged by contact friction.

[0004] This utility model provides a cradle turntable, including a cradle body with a swing arm, a C-axis motor fixed in the middle of the cradle body, and an A-axis motor fixedly connected to the connecting end of the swing arm. The A-axis motor is provided with a terminal block, and the cable connected to the terminal block passes through the cable routing groove in the A-axis motor and the swing arm and is connected to the C-axis motor. The connecting end of the swing arm is provided with a limiting groove, and a limiting block is provided in the limiting groove. The limiting block is provided with a cable passage hole. When the A-axis motor is fixedly connected to the connecting end of the swing arm, the limiting block is limited in the limiting groove, and the cable extending from the A-axis motor passes through the cable passage hole and extends into the cable routing groove of the swing arm.

[0005] In some preferred embodiments, the limiting groove is a circular groove, and the limiting block is a cylinder with an outer diameter smaller than that of the limiting groove.

[0006] In some preferred embodiments, the wire hole is a round hole with chamfered ends.

[0007] In some preferred embodiments, a first maintenance window is provided on the swing arm, which is opposite to the limiting block, and a first mounting plate is detachably mounted on the first maintenance window. A fixing part for fixing the cable is provided on the inner side wall of the first mounting plate, and the cable is limited and fixed on the fixing part.

[0008] In some preferred embodiments, the fixing part is a wire clip or a wire clamp.

[0009] In some preferred embodiments, a second maintenance window and a second mounting plate that can be detachably installed on the outer side of the swing arm near the A-axis motor are provided.

[0010] In some preferred embodiments, the limiting block is provided with a plurality of wire-passing holes at intervals, and there are multiple cables, each of which passes through a plurality of wire-passing holes.

[0011] In some preferred embodiments, a bearing is provided between the limiting block and the rotor of the A-axis motor so that the limiting block does not rotate with the rotor.

[0012] In some preferred embodiments, a hollow section is formed inside the rotor of the A-axis motor, and the cable portion located between the terminal block and the limiting block is suspended in the hollow section.

[0013] In some preferred embodiments, a corrugated tube is provided inside the hollow section, through which the cable passes; one end of the corrugated tube is fixed to the terminal block, and the other end of the corrugated tube is inserted into one of the cable passage holes.

[0014] The beneficial effects of this utility model are:

[0015] This utility model allows for easy connection of cables to the terminal block via a limiting block and a hollow section. The cable passes through the cable hole in the limiting block and then through the hollow section to connect with the terminal block. When the A-axis motor drives the cradle body to rotate, it can prevent the cable from contacting and rubbing, as well as from twisting or tangling, thereby protecting the cable and improving the service life of the cradle turntable. Attached Figure Description

[0016] Figure 1 This is a perspective view of the cradle turntable in this utility model;

[0017] Figure 2 This is a cross-sectional view of the cradle turntable in this utility model;

[0018] Figure 3 This is a schematic diagram of the assembly structure of the cradle body, the limiting block, and the wiring board in this utility model;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the first mounting plate and the cradle body in this utility model;

[0020] Figure 5 This is a schematic diagram of the assembly structure of the second mounting plate and the cradle body in this utility model;

[0021] Figure 6 This is a schematic diagram of a structure with a bellows installed inside the A-axis motor.

[0022] The meanings of the numbers in the attached diagram are as follows: 1. Cradle body; 11. Swing arm; 12. Cable tray; 13. Fixing hole; 14. Limiting slot; 15. First maintenance window; 16. First mounting plate; 17. Second maintenance window; 18. Second mounting plate; 2. C-axis motor; 21. First central axis; 3. A-axis motor; 30. Second central axis; 31. Wiring board; 32. Limiting block; 321. Cable hole; 33. Hollow part; 34. Base; 35. Brushless motor; 351. Stator; 352. Rotor; 4. Cable; 5. Hook; 9. Turntable. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this application to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0024] Combination Figures 1-5 As shown, this utility model discloses a cradle turntable, which includes a cradle body 1, a C-axis motor 2, and two A-axis motors 3. The C-axis motor 2 is installed in the middle of the cradle body 1. The cradle body 1 has two opposite sides with swing arms 11. The two A-axis motors 3 are respectively connected to the connecting ends of the two swing arms 11. The second central axis 30 of the two A-axis motors 3 is located on the same horizontal line. The two A-axis motors 3 are used to synchronously drive the cradle body 1 and the C-axis motor 2 to rotate around the second central axis 30 of the A-axis motor 3 as needed.

[0025] It is understood that the A-axis motor 3 includes a stator and a rotor, with the rotor fixedly connected to the end of the swing arm 11, thus enabling the two A-axis motors 3 to drive the cradle body 1 to rotate. For example, as... Figure 3 As shown, several fixing holes 13 are provided on the outer side wall of the end of the swing arm 11. The rotor of the A-axis motor 3 is fixedly assembled with the fixing holes 13 of the swing arm 11 by screws and other components.

[0026] The cradle body 1 has a mounting groove in the middle, and the C-axis motor 2 is located in the mounting groove. A turntable 9 for mounting workpieces is provided at the top of the C-axis motor 2. The C-axis motor 2 drives the turntable 9 to rotate the workpiece around the first central axis 21 of the C-axis motor 2 as needed.

[0027] The A-axis motor 3 has a terminal block 31 at the end furthest from the swing arm 11. The A-axis motor 3 receives external power and signal equipment via the terminal block 31. A cable tray 12 is located inside the swing arm 11. Existing technology involves a cable 4 connected to the terminal block 31 passing through the A-axis motor 3 and the cable tray 12 before connecting to the C-axis motor 2. This can easily lead to defects such as twisting, tangling, and friction of the cable 4 during the rotation of the cradle body 1 driven by the A-axis motor 3.

[0028] To this end, the present invention has made the following improvements: a limiting groove 14 is provided on the outer side wall of the connecting end of the swing arm 11, and a limiting block 32 is provided in the limiting groove 14. The limiting block 32 is provided with a wire hole 321 for the cable 4 to pass through. The A-axis motor 3 is also provided with a hollow part 33. The cable 4 passes through the wire hole 321 and through the hollow part 33 to connect with the terminal block 31, that is, the cable 4 connected to the terminal block 31 and the C-axis motor 2 passes through the wire hole 321 of the limiting block 32.

[0029] The limiting block 32 is located in the limiting groove 14. By being fixedly connected to the connection end of the A-axis motor 3 and the swing arm 11, the limiting block 32 is limited in the limiting groove 14 and cannot come out. One end of the cable 4 is connected to the terminal block 31, and the other end of the cable 4 extends out of the A-axis motor 3. Therefore, the cable 4 extending from the A-axis motor 3 passes through the cable hole 321 and further extends into the cable routing groove 12 of the swing arm 11.

[0030] By setting the cable 4 through the cable hole 321 of the limit block 32, a certain physical distance is formed between the cable 4 and the motor rotor in the A-axis motor and between the cable 4 and the inner side wall of the cable groove 12 of the swing arm 11. This can effectively prevent the cable 4 from twisting and tangling during the rotation of the cradle body 1 driven by the A-axis motor, and can also effectively reduce the contact friction between the cable 4 and the A-axis motor and the swing arm 11, thereby protecting the cable 4.

[0031] In a preferred embodiment, the limiting groove 14 is a circular groove, and the limiting block 32 is a cylinder with an outer diameter smaller than that of the limiting groove 14. During the rotation of the cradle body 1 relative to the two A-axis motors 3, when the cable 4 swings and stretches with the rotation of the cradle body 1, the cable 4 can drive the limiting block 32 to rotate within the limiting groove 14. The rotation of the limiting block 32 eliminates the stretching of the cable 4 caused by the rotation of the cradle body 1, thus protecting the cable 4. Simultaneously, it shortens the length of the cable 4, reducing the likelihood of tangling and knotting. The number of wire through holes 321 is typically multiple, spaced apart on the limiting block 32. Different cables 4 can pass through different wire through holes 321, improving the heat dissipation performance of the cable 4 and preventing tangling and knotting of multiple strands of cable 4 during use.

[0032] The cable passage hole 321 is preferably a round hole with chamfered ends, so that when the cable 4 passes through the cable passage hole 321, the friction between the cable 4 and the inner wall of the cable passage hole 321 is small, which helps to further reduce the contact friction of the cable 4 and thus protect the cable 4.

[0033] In practical applications, the operator places the workpiece to be processed on the turntable 11. The turntable 11 is driven to rotate by the C-axis motor 2, and the rotation direction is on a horizontal plane. The A-axis motor 3 drives the cradle body 1 to rotate. The rotation axis of the A-axis motor 3 passes through the middle of the A-axis motor 3 and is parallel to the horizontal line of the cradle body 1 and the A-axis motor 3. The A-axis motor 3 drives the cradle body 1 to rotate, and the cradle body 1 drives the turntable 11 and the C-axis motor 2 to rotate. The C-axis motor 2 drives the turntable 11 to rotate, and the turntable 11 simultaneously drives the workpiece on the turntable 11 to rotate. This is then combined with external processing equipment to process the workpiece. On the other hand, the terminal block 31 is used for power supply and connection to the power supply of the external equipment, and the cable 4... When connected to the terminal block 31, power can be supplied by the external power supply to drive the C-axis motor 2 to drive the turntable 11 to rotate. The terminal block 31 will not rotate with the rotation of the A-axis motor 3. During the rotation of the A-axis motor 3, the cable 4 of the C-axis motor 2 will be affected by the rotation and become tangled. Therefore, by passing the cable 4 through the cable hole 321 of the limit block 32 and suspending it in the hollow part 33, the cable 4 is prevented from becoming tangled when driven by the A-axis motor 3. When the A-axis motor 3 drives the cradle body 1 to rotate, the cable 4, which passes through the cable hole 321 and is located in the hollow part 33 and connected to the terminal block 31, will not rotate with the rotation of the A-axis motor 3, thus avoiding the tangling of the cable 4.

[0034] Furthermore, the A-axis motor 3 includes a base 34 and a brushless motor 35. The brushless motor 35 is located inside the base 34 and is connected to the terminal block 31. The terminal block 31 is located on the end of the base 34 away from the cradle body 1. The output end of the brushless motor 35 is connected to the cradle body 1. The limiting block 32 is located between the brushless motor 35 and the cradle body 1. The hollow part 33 is located inside the brushless motor 35.

[0035] Through the above design, the brushless motor 35 is powered by the terminal block 31. After the power is applied, it generates a magnetic field and rotates. Therefore, when the terminal block 31 supplies power to the brushless motor 35, the output end of the brushless motor 35 will drive the cradle body 1 to rotate. The cradle body 1 drives the turntable 11 and the C-axis motor 2 to rotate, thereby driving the workpiece to rotate and improving the processing efficiency of the workpiece. On the other hand, when the brushless motor 35 is rotating, the hollow part 33 inside the brushless motor 35 will not be affected by the rotation, thereby avoiding the situation of the cable 4 getting tangled.

[0036] Furthermore, the brushless motor 35 includes a stator 351 and a rotor 352. One end of the stator 351 is connected to the terminal block 31, and the other end is connected to the rotor 352 through a bearing. The rotor 352 is fixedly connected to the end of the swing arm 11 of the cradle body 1. The rotor 352 is located inside the stator 351. The hollow part 33 is located inside the rotor 352. The limiting block 32 is located between the rotor 352 and the cradle body 1.

[0037] In the above design, when the terminal block 31 is connected to the power supply, the stator 351 will not move, but the rotor 352 will rotate around the center of the rotor 352 as the power supply is connected. The hollow part 33 is located inside the rotor 352, so when the rotor 352 rotates, the cable 4 will not be affected in the hollow part 33. That is to say, the cable 4 will not be tangled due to the rotation of the rotor 352. On the other hand, the cable 4 located in the wire hole 321 of the limit block 32 can also prevent the cable 4 from contacting and rubbing with the rotor 352 and damaging the cable 4 or the rotor 352.

[0038] Furthermore, the stator 351 is provided with windings, and the rotor 352 is a magnetic track.

[0039] In this embodiment, when the terminal block 31 is powered on, the stator 351 will not rotate, but the rotor 352 will rotate around the center of the rotor 352, which is the center of the magnetic track. Specifically, the hollow part 33 is located inside the magnetic track. Therefore, when the rotor 352 rotates, the limiting block 32 is directly fixed to the rotor 352 and can play a supporting role, which can prevent the cable 4 from contacting and rubbing against the rotor 352, thus avoiding damage to the cable 4 or the rotor 352.

[0040] Furthermore, a bearing can be provided between the limiting block 32 and the rotor 352. By providing the bearing, the limiting block 32 will not rotate with the rotor 352, thus preventing the cables passing through the limiting block 32 from getting tangled and knotted when the limiting block 32 rotates with the rotor 352.

[0041] Furthermore, a first maintenance window 15 and a first mounting plate 16 detachably mounted on the first maintenance window 15 are provided on the swing arm 11. A fixing part for fixing the cable 4 is provided on the inner side wall of the first mounting plate 16, and the cable 4 is limited and fixed on the fixing part. In addition, the first maintenance window 15 is set opposite to the limiting block 32, that is, the first maintenance window 15 and the limiting block 32 are respectively located on two opposite sides of the upper end of the swing arm 11. Therefore, after the cable 4 passes through the wire hole 321 of the limiting block 32, it extends further to the fixing part of the first mounting plate 16 for fixing before being routed to the C-axis motor 2, thereby avoiding contact friction between the cable 4 and the inner wall of the wire routing groove 12 when the cable 4 enters the wire routing groove 12 of the swing arm 11 after passing through the wire hole 321.

[0042] Through the above design, the length and position of the cable 4 can also be adjusted by the first mounting plate 16. The specific installation steps are as follows: the cable 4 of the C-axis motor 2 located in the cradle body 1 passes through the cable hole 321 of the limiting block 32 from the cradle body 1, and is connected to the terminal block 31 in the hollow part 33. The first mounting plate 16 can facilitate the staff to adjust the position of the cable 4 and prevent the cable 4 from being too long and bending to contact the rotor 352. After the position of the cable 4 is adjusted, the staff will install the first mounting plate 16 on the cradle body 1, which can prevent the cable 4 from passing out of the cradle body 1. The cradle body 1 and the first mounting plate 16 can also better protect the cable 4.

[0043] Furthermore, the fixing part on the first mounting plate 16 can be a wire clip or a wire clamp, which can quickly fix the cable 4 on the first mounting plate 16.

[0044] Furthermore, the outer side of the swing arm 11 near the A-axis motor 3 is provided with a second maintenance window 17 and a second mounting plate 18 that can be detachably installed on the second maintenance window 17. After removing the second mounting plate 18, the cable tray 12 of the swing arm 11 is partially exposed, which facilitates the length adjustment, arrangement and other maintenance work of the cable 4 in the swing arm 11 through the second maintenance window 17.

[0045] When it is necessary to adjust the position of cable 4, the position of cable 4 located in the placement area can be adjusted by removing the second mounting plate 18, which further prevents cable 4 from contacting rotor 352. In other words, the first mounting plate 16 can adjust the cable 4 located in the upper position inside the cradle body 1, and the second mounting plate 18 can adjust the cable 4 located in the lower position inside the cradle body 1. The first mounting plate 16 and the second mounting plate 18 can better protect the cable 4 located inside the cradle body 1.

[0046] As described above, the limiting block 32 is provided with multiple wire-passing holes 321, and multiple cables 4 are passed through the multiple wire-passing holes 321. In this embodiment, the limiting block 32 has four wire-passing holes 321. Specifically, one or more cables 4 are passed through one wire-passing hole 321. Because the limiting block 32 does not rotate with the rotor 352, the cables 4 passed through the wire-passing holes 321 will not become tangled.

[0047] Furthermore, to prevent the cable 4 from contacting and rubbing against the rotor 352 within the hollow portion 33 of the A-axis motor 3, a corrugated tube 39 can be installed within the hollow portion 33, such as... Figure 6 As shown, one end of the corrugated tube 39 is fixed to the terminal block 31, and the other end of the corrugated tube 39 is inserted into one of the cable passage holes 321, with the cable 4 located inside the corrugated tube 39. By setting the corrugated tube 39 and the limiting block 32 to work together, it is beneficial to further protect the cable 4.

[0048] Furthermore, the cradle turntable also includes a hook 5, which is connected to the top of the A-axis motor 3.

[0049] Through the above design, hook 5 can facilitate the movement of the cradle turntable by staff.

[0050] Furthermore, the C-axis motor 2 is a drive motor.

[0051] In this embodiment, the C-axis motor 2 is a drive motor that can drive the turntable 11 to rotate on the horizontal plane, thereby causing the workpiece to rotate on the horizontal plane.

[0052] In summary, this utility model allows for easy connection of cables to the terminal block via the limiting block and the hollow section. The cables pass through the cable passage hole of the limiting block and through the hollow section to connect with the terminal block. This prevents the cables from contacting the A-axis motor and causing damage when the A-axis motor drives the cradle body to rotate.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cradle turntable, comprising a cradle body with a swing arm, a C-axis motor fixed in the middle of the cradle body, and an A-axis motor fixedly connected to the connecting end of the swing arm, wherein the A-axis motor is provided with a terminal block, and a cable connected to the terminal block passes through a cable routing groove in the A-axis motor and the swing arm and is connected to the C-axis motor; characterized in that: A limiting groove is provided at the connecting end of the swing arm, and a limiting block is provided in the limiting groove. The limiting block is provided with a wire passage hole. When the A-axis motor is fixedly connected to the connecting end of the swing arm, the limiting block is limited in the limiting groove. The cable extending from the A-axis motor passes through the wire passage hole and extends into the wiring groove of the swing arm.

2. The cradle turret as claimed in claim 1, characterized in that The limiting groove is a circular groove, and the limiting block is a cylinder with an outer diameter smaller than that of the limiting groove.

3. The cradle turret of claim 1 wherein, The wire guide hole is a round hole with chamfered ends.

4. The cradle turret of claim 1 wherein, The swing arm has a first maintenance window that is opposite to the limiting block and a first mounting plate that can be detachably installed on the first maintenance window. The inner side wall of the first mounting plate has a fixing part for fixing the cable, and the cable is limited and fixed on the fixing part.

5. The cradle turret as in claim 4, wherein, The fixing part is a wire clip or wire clamp.

6. The cradle turret of claim 1 wherein, A second maintenance window and a second mounting plate that can be detachably installed on the outer side of the swing arm near the A-axis motor are provided.

7. The cradle turret of claim 1 wherein, The limiting block is provided with multiple wire-passing holes at intervals, and there are multiple cables, each of which passes through one of the multiple wire-passing holes.

8. The cradle turret of claim 1 wherein, A bearing is installed between the limit block and the rotor of the A-axis motor to prevent the limit block from rotating with the rotor.

9. A cradle turret according to any one of claims 1-8, characterized in that A hollow section is formed inside the rotor of the A-axis motor, and the cable section located between the terminal block and the limit block is suspended in the hollow section.

10. The cradle turret as claimed in claim 9, characterized in that A corrugated tube is installed inside the hollow section, through which the cable passes; one end of the corrugated tube is fixed to the terminal block, and the other end of the corrugated tube is inserted into one of the cable passage holes.

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