Mechanism for finding and calibrating mechanical zero point of servo motor

Abstract

The utility model relates to a mechanical zero-point retrieving and calibrating mechanism for a servo motor. A base plate is movably connected with a transplanting mechanism base; a servo device is arranged on the bottom plate; a zero-point finding device is arranged on one side of a transplanting mechanism base, a servo device drives the transplanting mechanism base to be close to the zero-point finding device, and a high-precision feeler gauge is inserted between the transplanting mechanism base and the zero-point finding device for mechanical zero-point finding and calibration; the method has the advantages that the mechanical zero point finding and calibration mode is simple, practical and accurate, and the defects that in the prior art, mechanical original point calibration is generally adopted after a servo motor is replaced or equipment is maintained, but the traditional original point calibration depends on an encoder or a grating ruler, the cost is high, and electromagnetic interference is prone to occurring are overcome; the mechanical origin finding precision is low; different from software algorithm compensation, the complexity is high, and the accumulated error is large.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to a kind of mechanical zero point finding and calibration mechanism, in particular to a kind of servo motor mechanical zero point finding and calibration mechanism especially applicable to mechanical origin calibration when servo motor is replaced or equipment is maintained. BACKGROUND

[0002] Prior art generally adopts mechanical origin calibration when servo motor is replaced or equipment is maintained, but it has some defects: traditional origin calibration relies on encoder or grating ruler, with high cost and susceptible to electromagnetic interference;Mechanical origin finding precision is low;Unlike software algorithm compensation, with high complexity, large cumulative error. INVENTION CONTENTS

[0003] The embodiment of the utility model aims at providing a kind of servo motor mechanical zero point finding and calibration mechanism with simple and practical mechanical zero point finding and calibration mode.

[0004] To achieve the above object, the embodiment of the utility model designs a kind of servo motor mechanical zero point finding and calibration mechanism, comprising:

[0005] Bottom plate;

[0006] Transplanting mechanism base, the transplanting mechanism base is movably connected on the bottom plate;

[0007] Servo device, the servo device is provided on the bottom plate;

[0008] Zero point finding device, the zero point finding device is provided on the side of the transplanting mechanism base, the servo device drives the transplanting mechanism base to be close to the zero point finding device, and high-precision plug gauge is inserted between the transplanting mechanism base and the zero point finding device, to carry out mechanical zero point finding and calibration.

[0009] Further, in the servo motor mechanical zero point finding and calibration mechanism of the utility model, the transplanting mechanism base is movably connected with the bottom plate by slide rail sliding block.

[0010] Further, in the servo motor mechanical zero point finding and calibration mechanism of the utility model, the servo device is fixedly connected with the edge of the transplanting mechanism base by support.

[0011] Further, in the servo motor mechanical zero point finding and calibration mechanism of the utility model, the servo device further comprises:

[0012] Servo motor, the housing of the servo motor is fixed on the bottom plate;

[0013] Lead screw, the lead screw is connected on the servo motor;

[0014] ball nut, the ball nut is movably connected on the screw rod, the edge of the transplanting mechanism base is connected on the ball nut through the support, the servo motor drives the screw rod to rotate, and the ball nut moves linearly, so that the transplanting mechanism base moves linearly.

[0015] proximity switch limiting block, the proximity switch limiting block is fixed on the ball nut.

[0016] proximity switch mounting rod, the proximity switch mounting rod is fixed on the bottom plate on the side of the proximity switch limiting block.

[0017] mechanical origin limiting proximity switch, limit front limiting proximity switch and limit rear limiting proximity switch are mounted on the proximity switch mounting rod from left to right.

[0018] Further, in the servo motor mechanical zero point finding back and calibration mechanism, the zero point finding back device further comprises:

[0019] limiting block, the limiting block is fixed on the bottom plate in the vertical direction of the servo device.

[0020] high-hardness circular blocking pin, the high-hardness circular blocking pin is also fixed on the side of the transplanting mechanism base.

[0021] high-precision plug gauge block, the high-precision plug gauge block is placed on the limiting block and the high-hardness circular blocking pin, and is used for finding back and calibration.

[0022] Further, in the servo motor mechanical zero point finding back and calibration mechanism, a buffer block is fixed on the bottom plate above the zero point finding back device, and a buffer blocking bolt is fixed on the buffer block.

[0023] Further, in the servo motor mechanical zero point finding back and calibration mechanism, the high-precision plug gauge block has a precision of ±0.01 mm.

[0024] Further, in the servo motor mechanical zero point finding back and calibration mechanism, the high-precision plug gauge block is a strip-shaped plug gauge block.

[0025] Further, in the servo motor mechanical zero point finding back and calibration mechanism, the high-hardness circular blocking pin and the limiting block have a parallelism of less than 0.01 mm.

[0026] Compared with the prior art, the implementation of this utility model adopts a method in which the transplanting mechanism base is movably connected to the base plate; a servo device is set on the base plate; and a zero-point retrieval device is set on one side of the transplanting mechanism base. The servo device drives the transplanting mechanism base to approach the zero-point retrieval device, and a high-precision feeler gauge is inserted between the transplanting mechanism base and the zero-point retrieval device to perform mechanical zero-point retrieval and calibration. This method is simple, practical, and accurate in mechanical zero-point retrieval and calibration, and solves the shortcomings of the prior art, which generally uses mechanical origin calibration after servo motor replacement or equipment maintenance: traditional origin calibration relies on encoders or grating rulers, which are costly and susceptible to electromagnetic interference; the mechanical origin retrieval accuracy is low; and unlike software algorithm compensation, it is complex and has large cumulative errors. Attached Figure Description

[0027] Figure 1 This describes the working state of the servo motor in this utility model.

[0028] Figure 2 This is to retrieve the status of the servo motor of this utility model. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0030] The embodiments of this utility model relate to a servo motor mechanical zero-point retrieval and calibration mechanism, such as... Figure 1 and Figure 2 As shown, it includes:

[0031] In this embodiment, a base plate 12 is provided in the servo motor mechanical zero-point retrieval and calibration mechanism as a support;

[0032] The transplanting mechanism base 5 is movably connected to the base plate 12; the transplanting mechanism base 5 is used for movement and displacement.

[0033] A servo device 20 is installed on the base plate 12. The servo device 20 is mainly used to install the servo motor, which facilitates the mechanical zero-point retrieval and / or calibration of the servo motor mechanical zero-point retrieval and calibration mechanism in this embodiment.

[0034] Zero point recovery device 30, the zero point recovery device 30 is arranged on one side of the transplanting mechanism base 5, the servo device 30 drives the transplanting mechanism base 5 to approach the zero point recovery device 30, the high-precision plug gauge 6 is inserted between the transplanting mechanism base 5 and the zero point recovery device 30, and the mechanical zero point recovery and calibration are carried out. The mechanical zero point recovery and calibration mode is simple, practical and accurate, and the technical problems that the existing technology generally adopts the mechanical origin calibration when the servo motor is replaced or the equipment is maintained, but some defects exist: the traditional origin calibration relies on the encoder or the grating ruler, the cost is high and the electromagnetic interference is easy; the mechanical origin recovery precision is low; unlike the software algorithm compensation, the complexity is high, and the cumulative error is large.

[0035] In order to realize the above technical effects, the servo motor mechanical zero point recovery and calibration mechanism in the embodiment is as shown in Figure 1 and Figure 2 The transplanting mechanism base 5 is movably connected to the bottom plate 12 through a slide rail and a slide block. The transplanting mechanism base 5 moves on the bottom plate 12.

[0036] In order to realize the above technical effects, the servo motor mechanical zero point recovery and calibration mechanism in the embodiment is as shown in Figure 1 and Figure 2 The servo device 20 is fixedly connected to the edge of the transplanting mechanism base 5 through a support 13.

[0037] In order to realize the above technical effects, the servo motor mechanical zero point recovery and calibration mechanism in the embodiment is as shown in Figure 1 and Figure 2 The servo device 20 further comprises:

[0038] The housing of the servo motor 8 is fixed to the bottom plate 12;

[0039] The lead screw 14 is connected to the servo motor 8; the servo motor 8 drives the lead screw 14 to rotate;

[0040] The ball nut 15 is movably connected to the lead screw 14; the edge of the transplanting mechanism base 5 is connected to the ball nut 15 through the support 13; the servo motor 8 drives the lead screw 14 to rotate, and drives the ball nut 15 to move linearly; so that the transplanting mechanism base 5 moves linearly;

[0041] The proximity open light limiting stop block 7 is fixed to the ball nut 15;

[0042] On one side of the proximity open light limiting stop block 7, the proximity switch mounting rod 16 is fixed to the bottom plate 12; the proximity switch mounting rod 16 is used for installing the mechanical origin limiting proximity switch 9, the limit front limiting proximity switch 10 and the limit rear limiting proximity switch 11.

[0043] The mechanical origin limit proximity switch 9, the limit front limit proximity switch 10 and the limit rear limit proximity switch 11 are installed on the proximity switch mounting rod 16 from left to right respectively. When the proximity switch limit block 7 approaches the mechanical origin limit proximity switch 9, the limit front limit proximity switch 10 and the limit rear limit proximity switch 11, the signals of the mechanical origin limit, the limit front limit and the limit rear limit are sent respectively, which are used to control the position of the transplanting mechanism base 5, that is, to control the mechanical origin of the servo motor, the limit front limit of the movement of the servo motor and the limit rear limit of the movement of the servo motor.

[0044] In order to achieve the above technical effects, the servo motor mechanical zero point finding and calibration mechanism in the embodiment, as shown in Figure 1 and Figure 2 , the zero point finding device 30 further comprises:

[0045] The limit block 3 is fixed on the bottom plate 12 in the vertical direction of the servo device 20;

[0046] The high-hardness circular blocking pin 4 is also fixed on one side of the transplanting mechanism base 5;

[0047] The high-precision plug gauge block 6 is placed between the limit block 3 and the high-hardness circular blocking pin 4, which is used for finding and calibrating.

[0048] In order to achieve the above technical effects, the servo motor mechanical zero point finding and calibration mechanism in the embodiment, as shown in Figure 1 and Figure 2 , the buffer block 1 is fixed on the bottom plate 12 above the zero point finding device 39; the buffer blocking bolt 2 is fixed on the buffer block 1, which is used to buffer the transplanting mechanism base 5.

[0049] The current buffer block 1 is connected with the buffer blocking bolt 2, the transplanting mechanism base 5 is connected with the high-hardness circular blocking pin 4, when the mechanical origin needs to be found back, the servo motor 8 returns to the mechanical origin, at this time, the servo origin limit proximity switch 9 obtains a signal, a high-precision plug gauge 6 is taken, and is inserted between the limit block 3 and the high-hardness circular blocking pin 4, if the high-precision plug gauge 6 can be completely inserted without gap, it proves that the current device mechanical origin position is equal to the servo origin position, that is, the servo origin limit proximity switch 9 obtains a signal, and the thickness of the high-precision plug gauge 6 is added, if the high-precision plug gauge 6 is too tight or too loose, the device mechanical origin position is lost, and in order to find back again, the servo motor 8 needs to be disconnected from the motor enable, the transplanting mechanism base 5 is attached to the plane of the high-precision plug gauge 6 by manually rotating the lead screw 14, at this time, the current servo position is recorded, at this time, the device mechanical origin position is the sum of the position of the servo motor 8 and the thickness of the high-precision plug gauge 6, that is, the device mechanical origin position has been found back, after the servo motor 8 is replaced, the mechanical origin position is directly subtracted from the thickness of the high-precision plug gauge 6, and perfect connection can be realized.

[0050] In order to realize the above technical effects, the servo motor mechanical zero point finding back and calibration mechanism in the embodiment comprises a servo motor 8, a high-precision plug gauge block 6, a high-hardness circular blocking pin 4, a limit block 3, a buffer block 1, a buffer blocking bolt 2, a transplanting mechanism base 5, a lead screw 14, a servo motor mechanical zero point finding back and calibration mechanism, a servo origin limit proximity switch 9 and a servo motor mechanical zero point finding back and calibration mechanism. Figure 1 Figure 2 As shown in the drawings, the precision of the high-precision plug gauge block 6 is ±0.01mm.

[0051] In order to realize the above technical effects, the servo motor mechanical zero point finding back and calibration mechanism in the embodiment comprises a servo motor 8, a high-precision plug gauge block 6, a high-hardness circular blocking pin 4, a limit block 3, a buffer block 1, a buffer blocking bolt 2, a transplanting mechanism base 5, a lead screw 14, a servo motor mechanical zero point finding back and calibration mechanism, a servo origin limit proximity switch 9 and a servo motor mechanical zero point finding back and calibration mechanism. Figure 1 Figure 2 As shown in the drawings, the high-precision plug gauge block 6 is a long strip-shaped plug gauge block.

[0052] In order to realize the above technical effects, the servo motor mechanical zero point finding back and calibration mechanism in the embodiment comprises a servo motor 8, a high-precision plug gauge block 6, a high-hardness circular blocking pin 4, a limit block 3, a buffer block 1, a buffer blocking bolt 2, a transplanting mechanism base 5, a lead screw 14, a servo motor mechanical zero point finding back and calibration mechanism, a servo origin limit proximity switch 9 and a servo motor mechanical zero point finding back and calibration mechanism. Figure 1 Figure 2 As shown in the drawings, the parallelism between the high-hardness circular blocking pin 4 and the side surface of the limit block 3 is less than 0.01mm, so that the precision of the servo motor mechanical zero point finding back and calibration mechanism in the embodiment can be ensured.

[0053] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the utility model, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the utility model.​​​

Claims

1. A servo motor mechanical zero finding and calibration mechanism, characterized in that, The utility model relates to a seedling transplanting mechanism zero point finding back device, which belongs to the field of seedling transplanting mechanism zero point finding back device. It comprises the following parts: A bottom plate; A seedling transplanting mechanism base movably connected to the bottom plate; A servo device arranged on the bottom plate; 2. The servo motor mechanical zero finding and calibration mechanism of claim 1, wherein, A zero point finding back device arranged on one side of the seedling transplanting mechanism base, the servo device drives the seedling transplanting mechanism base to approach the zero point finding back device, and a high-precision plug gauge is inserted between the seedling transplanting mechanism base and the zero point finding back device to realize mechanical zero point finding back and calibration.

3. The servo motor mechanical zero finding and calibration mechanism of claim 1, wherein, The seedling transplanting mechanism base is movably connected to the bottom plate through a sliding rail and a sliding block.

4. The servo motor mechanical zero finding and calibration mechanism of claim 3, wherein, The servo device is fixedly connected to the edge of the seedling transplanting mechanism base through a support. The servo device further comprises: A servo motor, the housing of which is fixed to the bottom plate; A lead screw connected to the servo motor; A ball nut movably connected to the lead screw, the edge of the seedling transplanting mechanism base is connected to the ball nut through the support, the servo motor rotates to drive the lead screw to move the ball nut in a straight line, so that the seedling transplanting mechanism base moves in a straight line; A proximity switch light limiting stopper fixed to the ball nut; A proximity switch mounting rod fixed to one side of the proximity switch light limiting stopper and the bottom plate; 5. The servo motor mechanical zero finding and calibration mechanism of claim 1, wherein, A mechanical origin limiting proximity switch, a limit front limiting proximity switch, and a limit rear limiting proximity switch are mounted on the proximity switch mounting rod from left to right. The zero point finding back device further comprises: A limiting stopper fixed to the bottom plate in the vertical direction of the servo device; A high-hardness circular blocking pin also fixed to one side of the seedling transplanting mechanism base; 6. The servo motor mechanical zero finding and calibration mechanism of claim 1, wherein, A high-precision plug gauge block placed between the limiting stopper and the high-hardness circular blocking pin for finding back and calibration.

7. The servo motor mechanical zero finding and calibration mechanism of claim 5, wherein, A buffer stopper is fixed to the bottom plate above the zero point finding back device, and a buffer blocking bolt is fixed to the buffer stopper.

8. The servo motor mechanical zero finding and calibration mechanism of claim 7, wherein, The high-precision plug gauge block has an accuracy of ±0.01 mm.

9. The servo motor mechanical zero finding and calibration mechanism of claim 5, wherein, The high-precision plug gauge block is a long strip plug gauge block. The high-hardness circular blocking pin has a parallelism with the side surface of the limiting stopper less than 0.01 mm.

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