Positioning platform

Abstract

The utility model discloses a positioning platform which comprises a workbench, a supporting seat, a rotating rotor, a rotating stator, a bearing inner ring and a bearing outer ring. The rotary rotor is connected with the workbench; the rotating stator is annularly arranged outside the rotating rotor, the rotating stator is fixed to the supporting base, and the rotating rotor can drive the workbench to rotate relative to the rotating stator; the bearing inner ring is connected with the rotating rotor, and the bearing inner ring and the rotating rotor are coaxially arranged; the bearing outer ring is arranged outside the bearing inner ring in a surrounding mode, the bearing outer ring is fixed to the supporting base, and the bearing inner ring can rotate relative to the bearing outer ring along with the rotating rotor. The utility model has the advantages of direct drive, no other parts to transmit power, good overall stability, high positioning precision, guarantee of accuracy of precision machining, measurement and experimental results, full-automatic operation, high working efficiency, avoidance of introduction of personal errors, simple and compact overall structure, small occupied space, improvement of space utilization rate, long service life and low cost. And excessive maintenance cost investment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to precision instrument technical field especially relates to a positioning platform. BACKGROUND

[0002] In the field of precision manufacturing, scientific research experiment and high-end detection, the positioning of precision instruments is crucial, and its positioning accuracy is directly related to the accuracy of experimental results and the efficiency of production process. However, the current positioning equipment has many technical defects, which limits its application and development in a wider range of scenarios. The main shortcomings of the prior art include: insufficient accuracy, poor stability, low automation level, low space utilization, high maintenance cost. Insufficient accuracy: in the positioning process, due to the design defects of mechanical structure or the precision limitation of transmission system, it is difficult to achieve micron-level positioning accuracy, which directly affects the accuracy of precision machining, measurement and experimental results. Poor stability: long time operation or under high load condition, vibration and deviation are easy to occur, which leads to the decline of the overall stability of the instrument. This not only affects the smoothness of operation, but also may cause damage to the precision instrument itself. Low automation level: some traditional equipment relies on manual operation for positioning, which not only has low efficiency, but also is easy to introduce human error. Low space utilization: in some laboratories or equipment, the design often does not fully consider the space problem, resulting in large equipment and low efficiency of cooperation between different functional modules. High maintenance cost: due to complex structure and many parts, the existing positioning equipment often needs professional technicians and expensive accessories, which increases the cost and difficulty of use and maintenance. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a positioning platform.

[0004] In order to achieve the above purpose, the technical scheme provided by an embodiment of the utility model is as follows:

[0005] A positioning platform comprises:

[0006] A workbench;

[0007] A support seat;

[0008] A rotating rotor connected to the workbench;

[0009] A rotating stator arranged around the rotating rotor, the rotating stator being fixed to the support seat, and the rotating rotor being capable of driving the workbench to rotate relative to the rotating stator;

[0010] A bearing inner ring connected to the rotating rotor, the bearing inner ring being coaxially arranged with the rotating rotor;

[0011] A bearing outer ring is arranged outside the bearing inner ring, and the bearing outer ring is fixed to the support base, and the bearing inner ring can rotate relative to the bearing outer ring along with the rotating rotor.

[0012] As a further improvement of the utility model, the support base comprises a side ring plate, a limiting surface is arranged on the inner wall of the side ring plate, the rotating stator is arranged at least partially in the side ring plate, and one side of the rotating stator away from the workbench abuts against the limiting surface.

[0013] As a further improvement of the utility model, the support base further comprises a bottom plate, the bottom plate is connected to one end of the side ring plate away from the workbench, and the bottom plate and the side ring plate enclose a containing cavity; the bearing inner ring and the bearing outer ring are arranged in the containing cavity, and one end of the bearing outer ring away from the workbench abuts against the bottom plate.

[0014] As a further improvement of the utility model, the positioning platform further comprises a first connecting piece connected to the workbench and the rotating rotor, and / or the positioning platform further comprises a second connecting piece connected to the rotating rotor and the bearing inner ring.

[0015] As a further improvement of the utility model, the positioning platform further comprises a first reading assembly connected to the bearing inner ring and the support base respectively, and the first reading assembly is used for reading the rotation position data of the workbench.

[0016] As a further improvement of the utility model, the first reading assembly comprises a first reading head and a circular grating, the first reading head is connected to the support base, and the circular grating is connected to the bearing inner ring; the circular grating can rotate relative to the first reading head, and the first reading head is used for reading the rotation position data of the circular grating.

[0017] As a further improvement of the utility model, the positioning platform further comprises a third connecting piece connected to the bearing inner ring, the circular grating is connected to one end of the third connecting piece away from the workbench, and the first reading head is arranged on one side of the third connecting piece away from the workbench.

[0018] As a further improvement of the utility model, the positioning platform further comprises a base and a moving driving assembly, two ends of the moving driving assembly are connected to the base and the support base respectively, and the moving driving assembly can drive the support base to move relative to the base.

[0019] As a further improvement of the utility model, the mobile driving assembly comprises at least two linear driving members, the at least two linear driving members are arranged on the base respectively, and the at least two linear driving members are connected with the support seat respectively; the at least two linear driving members are arranged at intervals along the circumference of the support seat, and the at least two linear driving members are used for jointly driving the support seat to move relative to the base.

[0020] As a further improvement of the utility model, the positioning platform further comprises a counterweight assembly, the counterweight assembly is connected with the base and the support seat respectively, the counterweight assembly can drive the support seat to move relative to the base; the positioning platform further comprises a guide assembly, the guide assembly is connected with the base and the support seat respectively, the guide assembly is used for guiding the support seat; and / or the positioning platform further comprises a second reading assembly, the second reading assembly is connected with the base and the support seat respectively, and the second reading assembly is used for reading the moving position data of the workbench.

[0021] The utility model has the advantages of direct driving, no power transmission of other parts, good overall stability, high positioning accuracy, ensuring the accuracy of precision machining, measurement and experimental results, fully automatic operation, high work efficiency, avoiding the introduction of human error, simple and compact overall structure, small space occupation, improving space utilization, long service life and avoiding excessive maintenance cost investment.

[0022] The utility model directly drives, no other part transmits power, whole stability is good, positioning accuracy is high, ensures the accuracy of precision machining, measurement and experimental results, fully automatic operation, work efficiency is high, avoided the introduction of human error, whole structure is simple and compact, occupies space smaller, improves space utilization rate, and long service life, avoids excessive maintenance cost investment. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in embodiment or prior art description, obviously, the drawings in the following description only are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0024] Figure 1 It is the structure schematic view of preferred embodiment of the utility model;

[0025] Figure 2 It is the structure schematic view of preferred embodiment of the utility model; Figure 1 It is the A-A sectional view of;

[0026] Figure 3 It is the structure schematic view of preferred embodiment of the utility model, and the base is connected with the mobile driving assembly and support seat;

[0027] Figure 4 It is the front view of preferred embodiment of the utility model, and the mobile driving assembly is arranged on the base and connected with the support seat;

[0028] Figure 5 Structure diagram of counterweight assembly of preferred embodiment of the utility model;

[0029] Figure 6 Structure diagram of guiding assembly of preferred embodiment of the utility model;

[0030] Figure 7 Structure diagram of second reading assembly of preferred embodiment of the utility model;

[0031] Figure 8 Structure diagram of shell assembly arranged on base of preferred embodiment of the utility model;

[0032] Figure 9 Structure diagram of shell assembly arranged on base of preferred embodiment of the utility model;

[0033] In the figure: 1, workbench, 2, support seat, 21, fixed part, 211, first step surface, 22, containing groove, 221, second step surface, 3, rotating rotor, 31, first connecting part, 32, second connecting part, 33, first reading assembly, 331, first reading head, 332, round grating, 333, third connecting part, 334, reading head support frame, 4, rotating stator, 41, Hall sensor, 5, bearing inner ring, 51, cross roller, 6, bearing outer ring, 7, base, 81, moving drive assembly, 811, motor, 8111, stator, 8112, rotor, 812, first connecting seat, 813, second connecting seat, 82, counterweight assembly, 821, air cylinder, 8211, body part, 8212, moving part, 822, floating joint, 823, floating joint connecting part, 83, guiding assembly, 831, guide rail top plate, 832, guide rail moving plate, 833, linear guide rail, 8331, fixed part, 8332, linear motion part, 84, second reading assembly, 841, reading head mounting seat, 842, second reading head, 843, grating ruler, 844, grating ruler patch part, 9, shell assembly, 91, shell, 92, upper shell, 921, through hole. DETAILED DESCRIPTION

[0034] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the utility model.

[0035] Please refer to Figure 1 ,Figure 2 The positioning platform disclosed by the embodiments of the present application comprises a workbench 1, a support base 2, a rotating rotor 3, a rotating stator 4, a bearing inner ring 5, and a bearing outer ring 6. The rotating rotor 3 is connected to the workbench 1. The rotating stator 4 is annularly arranged outside the rotating rotor 3, and the rotating stator 4 is fixed to the support base 2. The rotating rotor 3 can drive the workbench 1 to rotate relative to the rotating stator 4. The bearing inner ring 5 is connected to the rotating rotor 3, and the bearing inner ring 5 is coaxially arranged with the rotating rotor 3. The bearing outer ring 6 is annularly arranged outside the bearing inner ring 5, and the bearing outer ring 6 is fixed to the support base 2. The bearing inner ring 5 can rotate relative to the bearing outer ring 6 along with the rotating rotor 3.

[0036] In some embodiments, the support base 2 comprises a side ring plate 201, and a limiting surface 2011 is arranged on the inner wall of the side ring plate 201. The rotating stator 4 is at least partially arranged in the side ring plate 201, and one side of the rotating stator 4 away from the workbench 1 abuts against the limiting surface 2011.

[0037] In order to improve the stability of the rotating stator 4 fixed to the support base 2, preferably, a fixing member 21 is connected above the side ring plate 201, a stepped surface 211 is arranged in the fixing member 21, and the rotating stator 4 abuts against the stepped surface 211 and the limiting surface 2011, respectively. The side ring plate 201 is locked with the fixing member 21, and the fixing member 21 provides a force towards the support base 2 to press the rotating stator 4 tightly on the side ring plate 201 of the support base 2, so as to ensure that the rotating stator 4 is completely fixed.

[0038] In some embodiments, the support base 2 further comprises a bottom plate 202 connected to one end of the side ring plate 201 away from the workbench 1. The bottom plate 202 and the side ring plate 201 form an accommodating cavity 203. The bearing inner ring 5 and the bearing outer ring 6 are arranged in the accommodating cavity 203, and one end of the bearing outer ring 6 away from the workbench 1 abuts against the bottom plate 202. Further, the bearing outer ring 6 is locked on the bottom plate 202.

[0039] In the embodiment, cross rollers 51 are arranged between the bearing inner ring 5 and the bearing outer ring 6 to form a cross roller bearing. It can be understood that, according to actual application requirements, other types of rollers can also be arranged between the bearing inner ring 5 and the bearing outer ring 6 to form different types of bearings.

[0040] In order to facilitate real-time monitoring and feedback of the movement of the rotating rotor 3, preferably, a Hall sensor 41 is fixed on the rotating stator 4.

[0041] The positioning platform further comprises a first connecting member 31 connected to the workbench 1 and the rotating mover 3, and a second connecting member 32 connected to the rotating mover 3 and the bearing inner ring 5. Specifically, the rotating mover 3 is abutted between the first connecting member 31 and the second connecting member 32, and the workbench 1, the first connecting member 31 and the second connecting member 32 are sequentially connected as a whole, and the second connecting member 32 partially extends into the bearing inner ring 5 and is in interference fit with the bearing inner ring 5. It can be understood that the first connecting member 31 is not limited to the above structure, and can be separately provided and connected to the workbench 1 and the rotating mover 3, or the second connecting member 32 is separately provided and connected to the rotating mover 3 and the bearing inner ring 5. As long as the workbench 1, the rotating mover 3 and the bearing inner ring 5 can rotate together, it is not limited herein.

[0042] In some embodiments, the positioning platform further comprises a first reading member 33 connected to the bearing inner ring 5 and the support base 2 respectively, and the first reading member 33 is used for reading the rotating position data of the workbench 1.

[0043] Please refer to Figure 1 , Figure 2 The first reading member 33 comprises a first reading head 331 connected to the support base 2 and a circular grating 332 connected to the bearing inner ring 5, the circular grating 332 is rotatable relative to the first reading head 331, and the first reading head 331 is used for reading the rotating position data of the circular grating 332.

[0044] In some embodiments, the positioning platform further comprises a third connecting member 333 connected to the bearing inner ring 5, the circular grating 332 is connected to one end of the third connecting member 333 away from the workbench 1, and the first reading head 331 is arranged on one side of the third connecting member 333 away from the workbench 1. The circular grating 332 is adhered to the third connecting member 333. A part of the third connecting member 333 extends into the bearing inner ring 5 and is in interference fit with the bearing inner ring 5, and another part of the third connecting member 333 abuts to one end of the bearing inner ring 5 away from the workbench 1. A part of the second connecting member 32 extends into the bearing inner ring 5 and is in interference fit with the bearing inner ring 5, and another part of the second connecting member 32 abuts to one end of the bearing inner ring 5 towards the workbench 1. The third connecting member 333 and the second connecting member 32 can be connected as a whole by bolts. Specifically, the positioning platform further comprises a reading head support frame 334, the first reading head 331 is connected to the reading head support frame 334, and the reading head support frame 334 is connected to the bottom plate 202 of the support base 2. By rotating the rotating mover 3, the bearing inner ring 5 and the circular grating 332 are driven to rotate, and the first reading head 331 reads the rotating position data of the circular grating 332 to obtain the rotating position data of the rotating mover 3 and the workbench 1 rotating together with the bearing inner ring 5.

[0045] Please refer toFigure 3 The positioning platform further comprises a base 7 and a moving driving assembly, two ends of the moving driving assembly are connected with the base 7 and the support base 2 respectively, and the moving driving assembly can drive the support base 2 to move relative to the base 7. The moving driving assembly drives the support base 2 to move away from the base 7, so that the support base 2, the rotating stator 4 and the rotating rotor 3 are lifted as a whole.

[0046] In the embodiment, the moving driving assembly comprises at least two linear driving members 81, the at least two linear driving members 81 are arranged on the base 7 respectively, and the at least two linear driving members 81 are connected with the support base 2 respectively. The at least two linear driving members 81 are arranged at intervals along the circumference of the support base 2, and the at least two linear driving members 81 are used to jointly drive the support base 2 to move relative to the base 7. In the embodiment, the number of the linear driving members 81 is two, and the two linear driving members 81 are arranged oppositely. Please refer to Figure 4 The linear driving member 81 comprises a motor 811, a first connecting seat 812 and a second connecting seat 813, the first connecting seat 812 is connected with the base 7 and the motor 811 respectively, the second connecting seat 813 is connected with the motor 811 and the support base 2 respectively, and lifting power is provided by the motor 811. The motor 811 is a voice coil motor, the stator 8111 of the voice coil motor is connected with the first connecting seat 812 and is fixed, and the rotor 8112 of the voice coil motor is connected with the second connecting seat 813 and moves linearly relative to the stator 8111 of the voice coil motor. It can be understood that the motor 811 is not limited to the voice coil motor, and can also be a linear motor, which is not limited here.

[0047] Please refer to Figure 3 , Figure 5 The positioning platform further comprises a counterweight assembly 82, the counterweight assembly 82 is connected with the base 7 and the support base 2 respectively, and the counterweight assembly 82 can drive the support base 2 to move relative to the base 7. The counterweight assembly 82 provides upward and downward thrust, greatly reduces the working burden of the linear driving member 81, and greatly improves the load capacity of the whole positioning platform. In the embodiment, the number of the counterweight assembly 82 is two, and the two counterweight assemblies 82 are arranged oppositely. Specifically, the counterweight assembly 82 comprises a pneumatic cylinder 821, a floating joint 822 connected with the pneumatic cylinder 821 and a floating joint connecting member 823 connected with the floating joint 822, and the floating joint connecting member 823 is connected with the support base 2. The body part 8211 of the pneumatic cylinder 821 is fixed on the base 7, the body part 8211 of the pneumatic cylinder 821 is communicated with a quick joint 824, and the moving part 8212 of the pneumatic cylinder 821 is connected with the floating joint 822. By supplying air to the pneumatic cylinder 821, the size of the counterweight force is adjusted by adjusting the air pressure in the pneumatic cylinder 821, and at the same time the floating joint 822 provides support for the support base 2 and generates deformation, so that the counterweight can be realized while the height adjustment of the support base 2 is adapted.

[0048] Please refer toFigure 3 、 Figure 6 The positioning platform further comprises a guide assembly 83 connected to the base 7 and the support base 2 respectively, and the guide assembly 83 is used for guiding the support base 2. Specifically, the guide assembly 83 comprises a guide rail fixed plate 831, a guide rail movable plate 832 and a linear guide rail 833 connecting the guide rail fixed plate 831 and the guide rail movable plate 832, the guide rail fixed plate 831 is connected to the base 7, and the guide rail movable plate 832 is connected to the support base 2. The fixed part 8331 and the linear motion part 8332 of the linear guide rail 833 are respectively installed on the guide rail fixed plate 831 and the guide rail movable plate 832, and when the linear driving part 81 works, the linear guide function is provided, and the precision of the movement direction and the movement distance is ensured. The bottom of the guide rail top plate 831 is provided with a bump stop pad 834, which can provide buffering for the linear guide rail 833 after losing power support.

[0049] Please refer to Figure 3 、 Figure 7 The positioning platform further comprises a second reading assembly 84 connected to the base 7 and the support base 2 respectively, and the second reading assembly 84 is used for reading the moving position data of the workbench 1. The second reading assembly 84 comprises a reading head mounting seat 841, a second reading head 842 connected to the reading head mounting seat 841, a grating ruler 843 and a grating ruler patch part 844 connected to the grating ruler 843, the reading head mounting seat 841 is connected to the base 7, and the grating ruler patch part 844 is connected to the support base 2. The second reading head 842 is correspondingly arranged with the grating ruler 843, so as to read the moving position data of the support disc 2 and the workbench 1 at any time, and feedback the moving position data of the workbench 1 in time.

[0050] Please refer to Figure 8 、 Figure 9 In some embodiments, the positioning platform further comprises a shell assembly 9, and the shell assembly 9 comprises a shell 91 and an upper shell 92 arranged on the shell 91. One end of the shell 91 is fixed on the base 7, and the other end is connected to the upper shell 92. The center of the upper shell 92 is provided with a through hole 921, and the workbench 1 protrudes through the through hole 921.

[0051] In use, the rotating stator 4 is stationary, the rotating rotor 3 rotates relative to the rotating stator 4, the rotating rotor 3 drives the workbench 1 to rotate, thereby driving the precise rotation of the load on the workbench 1, and the rotation angle of the workbench 1 is read in real time by the first reading assembly 33. The motor 811 provides lifting power, drives the support base 2 and the workbench 1 to move up and down through the rotor 8112, thereby realizing the precise lifting of the load on the workbench 1, and the real-time position of the lifting is read in real time by the second reading assembly 84. The rotation and lifting of the utility model are independently arranged and can work cooperatively, thereby greatly improving the working efficiency and accuracy of the load positioning on the workbench 1.

[0052] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0053] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A positioning platform, characterized in that, The positioning platform comprises: a workbench; a support base; a rotating rotor connected to the workbench; a rotating stator arranged around the rotating rotor, the rotating stator being fixed to the support base, and the rotating rotor being capable of driving the workbench to rotate relative to the rotating stator; a bearing inner ring connected to the rotating rotor, the bearing inner ring being coaxially arranged with the rotating rotor; a bearing outer ring arranged around the bearing inner ring, the bearing outer ring being fixed to the support base, and the bearing inner ring being capable of rotating relative to the bearing outer ring along with the rotating rotor.

2. The positioning platform according to claim 1, wherein: the support base comprises a side ring plate, an inner wall of the side ring plate is provided with a limiting surface, the rotating stator is at least partially arranged in the side ring plate, and a surface of the rotating stator away from the workbench abuts against the limiting surface.

3. The positioning platform according to claim 2, wherein: the support base further comprises a bottom plate, the bottom plate is connected to an end of the side ring plate away from the workbench, and the bottom plate and the side ring plate form a containing cavity; the bearing inner ring and the bearing outer ring are both arranged in the containing cavity, and an end of the bearing outer ring away from the workbench abuts against the bottom plate.

4. The positioning platform according to claim 1, wherein: the positioning platform further comprises a first connecting member connected to the workbench and the rotating rotor; and / or the positioning platform further comprises a second connecting member connected to the rotating rotor and the bearing inner ring.

5. The positioning platform according to claim 1, wherein: the positioning platform further comprises a first reading member connected to the bearing inner ring and the support base respectively, and the first reading member is used for reading rotation position data of the workbench.

6. The positioning platform according to claim 5, wherein: the first reading member comprises a first reading head and a circular grating, the first reading head is connected to the support base, and the circular grating is connected to the bearing inner ring; the circular grating is capable of rotating relative to the first reading head, and the first reading head is used for reading rotation position data of the circular grating.

7. The positioning platform according to claim 6, wherein: the positioning platform further comprises a third connecting member connected to the bearing inner ring, the circular grating is connected to an end of the third connecting member away from the workbench, and the first reading head is arranged on a side of the third connecting member away from the workbench.

8. The positioning platform according to any one of claims 1-7, wherein: the positioning platform further comprises a base and a moving driving member, two ends of the moving driving member are connected to the base and the support base respectively, and the moving driving member is capable of driving the support base to move relative to the base.

9. The positioning platform according to claim 8, wherein: The moving driving assembly comprises at least two linear driving members, which are respectively arranged on the base and connected to the support seat. The at least two linear driving members are arranged along the circumference of the support seat and are used to jointly drive the support seat to move relative to the base.

10. The positioning platform according to claim 8, characterized in that, The positioning platform further comprises a counterweight assembly, which is connected to the base and the support seat respectively and is used to drive the support seat to move relative to the base. The positioning platform further comprises a guide assembly, which is connected to the base and the support seat respectively and is used to guide the support seat; and / or The positioning platform further comprises a second reading assembly, which is connected to the base and the support seat respectively and is used to read the moving position data of the workbench.

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