TWI539106B - Rotating platform which is selectively positioned by a magnetic type device - Google Patents

Description

Magnetic positioning rotary platform

The invention relates to a rotating platform; in particular to an innovative structural type revealer of a magnetic positioning rotary platform.

According to the conventional design of the rotating platform structure, most of the driving source is composed of a servo motor; however, it is found that such a conventional structure is still found in practical application experience, because the servo motor structure is relatively complicated, and the installation cost is relatively Other motors are also much more expensive, which has caused problems in the manufacture of conventional rotating platforms that do not meet the economic benefits of better industry.

In addition, the conventional rotating platform adopts a servo motor as a driving type of the rotating platform driving source. Since the rotating disk of the rotating platform has a large gravity, the rotating body relatively generates a large inertia, which makes the rotating disk unable to be accurate when stopped. Parking, easy to have bias, delay and other problems and shortcomings, and the workpiece or instrument locked on the rotating disc will increase the rotational inertia of the rotating disc, so it is more difficult to achieve the high-precision positioning functional requirements.

Therefore, in view of the problems existing in the above-mentioned conventional rotating platform technology, how to develop an innovative structure that can be more ideal and practical, and the relevant industry should further consider the goals and directions of breakthrough.

In view of this, the inventor has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally obtained the practical invention.

The main object of the present invention is to provide a magnetic positioning type rotating platform, and the technical problem to be solved is to think about how to develop a new type of rotating platform structure type with more ideal practicability.

The technical feature of the present invention is mainly that the magnetic positioning rotary platform includes: a base, which is a hollow seat type, including a positioning portion, a top portion and a hollow receiving portion, the hollow capacity The bottom end of the bottom portion has a mounting seat; a rotating disc is horizontally rotatable by a bearing pivot group on the top of the base; and the movable device is vertically installed in the hollow receiving portion of the base. In the mounting seat, the top end of the actuating device has a driving shaft protruding upward toward the central portion of the bottom of the rotating disc; a magnetic guiding portion having a magnetic permeability and a ring-shaped shape is disposed on the rotating disc The bottom portion protrudes downwardly into the hollow receiving portion of the base and is located at a peripheral portion of the peripheral side of the actuating device, and the magnetic guiding portion is moved in conjunction with the rotating disk; an electrically controlled magnetic portion is in the form of a ring The state group is disposed on the mounting seat of the hollow receiving portion of the base and corresponding to the position below the magnetic guiding portion, the electronically controlled magnetic portion can be energized to generate a magnetic force to adsorb the positioning magnetic guiding portion together with the rotating disk; a shifting mechanism provided at the top of the actuating device Between the bottom of the turntable; an encoder comprising a disc and a photo sensor, thereby sensing the rotation angle of the rotating disk.

The main effects and advantages of the present invention are to provide an innovative rotary platform structure type that achieves positioning by magnetic attraction force, and achieves practical progress of high-strength positioning function.

Another main object of the present invention is to provide a stepping motor by using a driving motor of the rotating disk and the shifting mechanism is set to be another technical feature of the planetary gear set type, and the stepping motor can be used. High-precision positioning, excellent responsiveness to start and stop, no cumulative angle error at stop, simple structure, easy maintenance, etc., and the shifting mechanism The large torque and the precise grid positioning function of the star gear group type enable the magnetic attraction positioning rotary platform of the invention to achieve the simplification of the structure, the reduction of the installation cost, and the practical progress of the high-precision and high-strength positioning functions. And better industrial economic benefits.

A‧‧‧Magnetic positioning rotary platform

10‧‧‧Base

11‧‧‧ Positioning Department

12‧‧‧ top

13‧‧‧ Hollow Housing

14‧‧‧Installation seat

20‧‧‧ rotating disk

21‧‧‧ bearing

30‧‧‧Actuating device

31‧‧‧Drive shaft

40‧‧‧Magnetic positioning unit

50‧‧‧Electrically controlled magnetic suction

60‧‧‧Transmission mechanism

61‧‧‧Center gear

62‧‧‧ outer ring

63‧‧‧ planetary gear

64‧‧‧ fulcrum

70‧‧‧Encoder

71‧‧‧ disc

72‧‧‧Light sensor

80‧‧‧Floating washers

81‧‧‧Elastic film

82‧‧‧Lock hole

83‧‧‧ bolt

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a combination of preferred embodiments of the present invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is an enlarged perspective view of a partial member of the present invention.

Figure 4 is a cross-sectional view of a combination of preferred embodiments of the present invention.

Fig. 5 is a schematic view showing the state in which the electronically controlled magnetic attraction portion is floated and adsorbed by the setting of the floating washer when the electronically controlled magnetic attraction portion of the present invention is energized.

Figure 6 is an enlarged view of a partial structure of Figure 5.

Fig. 7 is a plan view showing the position of the shifting mechanism of the present invention in a planetary gear set type.

Please refer to Figures 1, 2, 3 and 4, which are preferred embodiments of the magnetic positioning rotary platform of the present invention, but the embodiments are for illustrative purposes only, and are not subject to this structure in patent applications. The magnetic positioning rotary platform A includes the following structure: a base 10 is a hollow seat type, including a positioning portion 11, a top portion 12, and a hollow receiving portion 13, the hollow capacity The bottom portion of the base portion 13 has a mounting seat 14; a rotating disc 20 is pivotally disposed on the top portion 12 of the base 10 by a bearing 21; the actuating device 30 is mounted in a vertical axial direction. In the mounting seat 14 of the hollow receiving portion 13 of the base 10, the top end of the actuating device 30 has a driving shaft 31 protruding upward toward the central portion of the bottom of the rotating disk 20; a magnetic guiding portion 40 having magnetic permeability And in a ring-shaped manner, it is disposed at the bottom of the rotating disk 20 and protrudes downward. Into the hollow receiving portion 13 of the base 10, and located at the peripheral side of the peripheral portion of the actuating device 30, the magnetic guiding portion 40 has to move with the rotating disk 20; an electrically controlled magnetic portion 50, in a loop The type group is disposed on the mounting seat 14 of the hollow receiving portion 13 of the base 10 and corresponding to the position below the magnetic guiding portion 40. The electronically controlled magnetic portion 50 can be energized to generate a magnetic force to adsorb the positioning and magnetic positioning. The portion 40 is coupled to the rotating disk 20; a shifting mechanism 60 is disposed between the top end of the actuating device 30 and the bottom of the rotating disk 20; an encoder 70 includes a disk 71 and a light sensor 72 for sensing the rotating disk 20 The angle of rotation.

As shown in the second and third embodiments, the electronically controlled magnetic portion 50 can be configured to be in a floating state, and a set between the electrically controlled magnetic portion 50 and the mounting portion 14 of the hollow receiving portion 13 is provided. The floatable washer 80 is provided with a plurality of elastic pieces 81 spaced apart from each other. (Note: the elastic piece 81 can be formed by a large and small two-arc fracture gap formed in the opposite direction. Each of the elastic pieces 81 has a locking hole 82 for locking the electronically controlled magnetic portion 50 or the mounting seat 14 by a bolt 83; and the electronically controlled magnetic field When the suction portion 50 is not energized, there is a non-contact friction state between the magnetic conductive positioning portion 40 and a gap (as shown by W in FIG. 4), and when the electromagnetically controlled magnetic portion 50 is energized (for example, the fifth portion) As shown in the figure, the electronically controlled magnetic attraction portion 50 is upwardly floated (as shown by the arrow L1 in FIG. 6) by the arrangement of the floatable washer 80, and is adsorbed and positioned on the magnetic conductive positioning portion 40. The electronically controlled magnetic attraction portion 50 of the present embodiment is provided with a floating type technical feature, mainly to ensure a gap between the electronically controlled magnetic attraction portion 50 and the magnetically conductive positioning portion 40 during the rotation of the rotary disk 20. (as shown by W in FIG. 4) to avoid mutual friction, and to ensure the smooth running of the rotary disk 20; and the elastic piece 81 provided in the floatable washer 80 is only allowed to generate elastic motion in the up and down direction, lateral direction Then, there is no elastic deflection, thereby ensuring that the electronically controlled magnetic attraction portion 50 and the magnetically conductive positioning portion 40 are in a state of adsorption and positioning, and that there is no lateral looseness.

As shown in FIG. 4, the disc 71 of the encoder 70 can be disposed at the bottom of the rotating disc 20, and the photo sensor 72 is disposed at the top of the actuating device 30. The corresponding position at the end. The component configuration type of the encoder 70 in this example is different from the conventional configuration in which the general encoder is disposed at the corresponding position of the motor shaft. The configuration position of this example is completely avoiding the motor because it is not at the corresponding position of the motor shaft. The problem of the deviation caused by the backlash error of the shaft can achieve better coding accuracy and high quality.

Wherein, the actuating device 30 can be a stepping motor.

As shown in Figures 2, 4, and 7, wherein the shifting mechanism 60 can be a planetary gear set, including a sun gear 61, an outer ring gear 62, and meshing between the sun gear 61 and the outer ring gear 62. The plurality of planetary gears 63 are formed on the top end of the drive shaft 31 of the actuating device 30, the outer ring gear 62 is set at the top end of the actuating device 30, and the planetary gears 63 are formed by The support shafts 64 are arranged in a rotatable state at the bottom of the rotary disk 20 in an equally spaced ring type.

Advantages of the invention: the "magnetic positioning rotary platform" disclosed by the invention mainly comprises innovations such as the base, the rotating disk, the actuating device, the magnetic guiding position portion, the electronically controlled magnetic suction portion, the shifting mechanism and the encoder The unique structural type and technical features enable the present invention to provide an innovative rotating platform structure type that achieves positioning by magnetic attraction in comparison with the conventional structure proposed in the prior art, and achieves the utility of high-intensity positioning function. Progressive.

Further, the present invention can further adopt the stepping motor by the actuating device of the rotating disc and the shifting mechanism is set to another technical feature of the planetary gear set type, and the high precision positioning of the stepping motor can be utilized. Excellent responsiveness to start and stop, no cumulative angle error at stop, simple structure, easy maintenance, etc., and the large torque and precise grid positioning that can be generated by the planetary gear set of the shifting mechanism. The magnetic attraction positioning rotary platform disclosed by the invention can achieve practical simplification of structure simplification, reduction of installation cost, and high precision and high-strength positioning function. Better industrial economic benefits.

The above embodiments are intended to be illustrative of the present invention, and are not to be construed as limiting the scope of the invention. The principles are changed and modified to achieve an equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧Magnetic positioning rotary platform

10‧‧‧Base

11‧‧‧ Positioning Department

12‧‧‧ top

13‧‧‧ Hollow Housing

14‧‧‧Installation seat

20‧‧‧ rotating disk

30‧‧‧Actuating device

31‧‧‧Drive shaft

40‧‧‧Magnetic positioning unit

50‧‧‧Electrically controlled magnetic suction

60‧‧‧ planetary gear set

62‧‧‧ outer ring

63‧‧‧ planetary gear

64‧‧‧ fulcrum

70‧‧‧Encoder

71‧‧‧ disc

72‧‧‧Light sensor

80‧‧‧Floating washers

81‧‧‧Elastic film

82‧‧‧Lock hole

83‧‧‧ bolt

Claims (5)

A magnetic positioning type rotating platform comprises: a base, which is a hollow seat type, comprising a positioning portion, a top portion and a hollow receiving portion, wherein the bottom end of the hollow receiving portion has a mounting seat; The rotating disk is horizontally disposed on the top of the base by a bearing pivot; the actuating device is vertically disposed in the mounting seat of the hollow receiving portion of the base, and the top of the actuating device The utility model has a driving shaft protruding upward toward a central portion of the bottom of the rotating disc; a magnetic guiding portion having a magnetic permeability and a ring-shaped shape, which is disposed at the bottom of the rotating disc and protrudes downward into the hollow space of the base In the placement portion, and located at the peripheral periphery of the actuating device, the magnetic guiding portion has to move with the rotating disk; an electrically controlled magnetic portion is set in the ring type group and is located in the hollow receiving portion of the base. And the corresponding position of the magnetically conductive positioning portion, the electrically controlled magnetic portion can be energized to generate a magnetic force to adsorb the positioning magnetic positioning portion together with the rotating disk; a shifting mechanism is disposed at the top end of the actuating device Between the bottoms of the rotating disc; an encoder, including a Disc and a light sensor, thereby sensing the rotation angle of the rotating disk; wherein the encoder disk system provided in the bottom rotary disc, the photo sensor is disposed at the top of the actuating means corresponding to the position. The magnetic positioning type rotating platform according to claim 1, wherein the electronically controlled magnetic suction portion is configured to be in a floating type, and the electronically controlled magnetic portion and the hollow receiving portion are mounted. a floating washer is disposed between the plurality of elastic sheets, and each of the elastic sheets has a locking hole for being locked to the electronically controlled magnetic portion or the mounting seat by a bolt; Electronically controlled magnetic attraction When the power is not energized, a non-contact friction state is maintained between the magnetic guiding portion and the magnetic guiding portion. When the electromagnetically controlled magnetic portion is energized, the electrically controlled magnetic portion is floated upward by the setting of the floating washer. The adsorption is positioned at the magnetically conductive positioning portion. The magnetic positioning type rotary platform according to the second aspect of the invention, wherein the elastic piece is formed into a zigzag type by using a large and small two-arc fracture gap formed in a reverse direction. The person who constitutes the state. The magnetic positioning rotary table of claim 3, wherein the actuating device is a stepping motor. The magnetic positioning rotary platform according to claim 4, wherein the shifting mechanism is a planetary gear set type including a sun gear, an outer ring gear, and meshing with the sun gear and the outer ring gear. a plurality of planetary gears formed between the top end of the drive shaft of the actuating device, the outer ring gear set being located at the top end of the actuating device, and the planetary gears being rotatable by the support shaft It is arranged at the bottom of the rotating disc in an equally spaced ring type.