Zero calibration clamp for encoder of composite code servo motor

Abstract

The utility model discloses a composite code servo motor encoder zero calibration clamp, which belongs to the technical field of encoder calibration, and is characterized by comprising a mounting plate, the top of the mounting plate is fixedly connected with an upper clamping plate, the bottom of the mounting plate is provided with a mounting cavity, the side wall of the mounting plate is provided with a moving groove in a penetrating manner, and the moving groove is communicated with the upper clamping plate. A motor is bolted to the side wall of the mounting cavity, a screw rod is connected to the middle of the mounting plate through a bearing and fixedly connected to the output end of the motor, a moving block in threaded connection with the screw rod is movably arranged in the moving groove, a lower clamping plate is fixedly connected to the side wall of the moving block, and the motor drives a screw rod rotating shaft. The lead screw and the movable block move in a threaded mode under acting force to move towards the upper clamping plate, the upper clamping plate and the lower clamping plate automatically clamp and fix the output shaft of the servo motor encoder, through the adjustable clamping mechanism, the output shafts of the servo motor encoders with different diameter sizes can be clamped and fixed, and the clamping size can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of encoder calibration, in particular to a zero position calibration fixture for a composite code servo motor encoder. Background Art

[0002] The servo motor encoder is a sensor installed on the servo motor to measure the magnetic pole position, servo motor angle and speed. According to the different physical media, the servo motor encoder can be divided into photoelectric encoder and magnetoelectric encoder. Photoelectric encoders are basically used on the market. The working principle of the servo motor encoder is that the controller drives the motor to run, and the motor rotates with the encoder. The feedback signal of the encoder is transmitted to the controller, and the motor speed and moving position or moving distance can be known. According to the feedback signal, after conversion, the controller can control the action.

[0003] Servo motors are usually equipped with encoders to monitor the motor status and speed. After the motor is produced, the encoder needs to be zero-position calibrated. The existing calibration equipment is inconvenient to clamp, which affects the detection efficiency.

[0004] The Chinese utility model patent with the current announcement number: CN210741544U discloses a servo motor encoder zero position calibration fixture, including a base, a clamping strip, a locking paddle, and a locking buckle. This utility model clamps the motor spindle through the clamping strip, and uses the locking paddle to drive the locking buckle to move, thereby tightening the clamping strip. The operation is convenient and the detection efficiency is improved. The design of the locking paddle shape effectively prevents the tension of the clamping buckle from causing locking failure.

[0005] In view of the above problems, existing patents have provided solutions, but there is a problem that the output shaft of the servo motor encoder cannot be automatically clamped and fixed, and there is also a problem that output shafts of different diameters cannot be clamped and fixed.

[0006] Therefore, a zero position calibration fixture for composite code servo motor encoder is proposed. Utility Model Content

[0007] 1. Technical problems to be solved

[0008] The utility model provides a composite code servo motor encoder zero position calibration fixture, which aims to solve the problem that the existing servo motor encoder zero position calibration fixture cannot automatically clamp and fix the output shaft of the servo motor encoder, and also cannot clamp and fix output shafts of different diameters.

[0009] 2. Technical solution

[0010] The utility model is implemented as follows: a zero-position calibration fixture for a composite code servo motor encoder comprises a mounting plate, an upper clamping plate is fixedly connected to the top of the mounting plate, a mounting cavity is arranged at the bottom of the mounting plate, a moving groove is provided through the side wall of the mounting plate, a motor is bolted to the side wall of the mounting cavity, a screw rod is connected to the middle bearing of the mounting plate and is fixedly connected to the output end of the motor, a moving block threadedly connected to the screw rod is movably arranged inside the moving groove, a lower clamping plate is fixedly connected to the side wall of the moving block, and an adjustable clamping mechanism is arranged on the side walls of the upper clamping plate and the lower clamping plate;

[0011] The adjustable clamping mechanism includes a movable groove, an arc plate, anti-slip teeth and a support and limit bolt. The movable groove is opened on the side walls of the upper clamp plate and the lower clamp plate, the arc plate is hinged to the inside of the movable groove, and a plurality of anti-slip teeth are fixedly connected to the side walls of the arc plate. The support and limit bolts are respectively threadedly connected to the side walls of the upper clamp plate and the lower clamp plate. Two support and limit bolts are arranged as a group, and the bottom ends of the two support and limit bolts are respectively located on the side walls at both ends of the arc plate.

[0012] In order to achieve the goal of limiting the support limit bolt when it contacts the arc plate, and at the same time increase the contact area between the support limit bolt and the arc plate, thereby improving the limiting effect of the support limit bolt on the arc plate, a composite code servo motor encoder zero position calibration fixture is preferably used in the utility model. A positioning groove is provided on the side wall of the arc plate away from the anti-slip tooth, and the bottom end of the support limit bolt is movably connected to the positioning groove.

[0013] In order to facilitate the placement of the mounting plate when idle and to provide electrical energy to the motor, a composite code servo motor encoder zero position calibration fixture is preferably used in the utility model. A base is fixedly connected to the side wall at the bottom of the mounting plate, and a battery is bolted inside the base, and the battery is electrically connected to the motor.

[0014] In order to support the lower clamping plate and prevent the lower clamping plate from tilting when clamping the output shaft, a composite code servo motor encoder zero position calibration fixture is preferably provided in the utility model. Two support grooves are provided on the side wall of the mounting plate, and two support plates are fixedly connected to the bottom surface of the lower clamping plate, and the support plates are movably connected to the support grooves.

[0015] In order to increase the friction between the contact surface of the arc plate and the output shaft and prevent sliding between the arc plate and the output shaft, a composite code servo motor encoder zero position calibration fixture is preferably used in the utility model. A plurality of anti-slip rubber strips are fixedly connected to the side wall of the arc plate, and the anti-slip rubber strips and the anti-slip teeth are staggered.

[0016] In order to facilitate the support and limit bolt to enter the positioning groove, as a preferred zero-position calibration fixture for a composite code servo motor encoder of the utility model, the bottom end of the support and limit bolt is arranged in an arc shape.

[0017] In order to make it easier for users to carry the entire device, as a preferred zero-position calibration fixture for a composite code servo motor encoder of the utility model, a handle is fixedly connected to the side wall of the mounting plate.

[0018] In order to make the bottom of the base have an anti-slip effect, as a preferred embodiment of the zero-position calibration fixture of a composite code servo motor encoder of the present invention, an anti-slip pad is bonded to the bottom surface of the base.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model arranges a mounting plate, an upper clamping plate, a mounting cavity, a movable groove, a motor, a screw, a movable block and a lower clamping plate. The motor drives the screw shaft. The screw and the movable block move in the direction of the upper clamping plate under the force. The upper clamping plate and the lower clamping plate automatically clamp and fix the output shaft of the servo motor encoder, thereby effectively solving the problem in the prior art that the output shaft of the servo motor encoder cannot be automatically clamped and fixed.

[0022] 2. The utility model is capable of clamping and fixing the output shaft of the servo motor encoder of different diameters by providing an adjustable clamping mechanism, and can adjust the clamped size, thereby effectively solving the problem in the prior art that the output shaft of different diameters cannot be clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the utility model;

[0024] Figure 2 It is a left view of the utility model;

[0025] Figure 3 For this utility model Figure 2 The three-dimensional cross-section view at AA in the middle;

[0026] Figure 4 It is a schematic diagram of the support groove and the support plate of the utility model;

[0027] Figure 5 It is a schematic diagram of the arc plate, anti-skid teeth, positioning grooves and anti-skid rubber strips of the utility model.

[0028] Description of the numbers in the figure:

[0029] 1. Mounting plate; 21. Upper clamping plate; 22. Mounting cavity; 23. Moving groove; 24. Motor; 25. Screw rod; 26. Moving block; 27. Lower clamping plate; 3. Adjustable clamping mechanism; 31. Movable groove; 32. Arc plate; 33. Anti-skid teeth; 34. Support limit bolt; 41. Positioning groove; 51. Base; 52. Battery; 61. Support groove; 62. Support plate; 71. Anti-skid rubber strip; 81. Handle; 91. Anti-skid pad. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] See also Figure 1-Figure 5 The utility model provides a technical solution: a zero-position calibration fixture for a composite code servo motor encoder, comprising a mounting plate 1, an upper clamping plate 21 is fixedly connected to the top of the mounting plate 1, a mounting cavity 22 is arranged at the bottom of the mounting plate 1, a moving groove 23 is provided through the side wall of the mounting plate 1, a motor 24 is bolted to the side wall of the mounting cavity 22, a screw rod 25 is connected to the middle bearing of the mounting plate 1 and is fixedly connected to the output end of the motor 24, a moving block 26 threadedly connected to the screw rod 25 is movably arranged inside the moving groove 23, a lower clamping plate 27 is fixedly connected to the side wall of the moving block 26, and an adjustable clamping mechanism 3 is arranged on the side walls of the upper clamping plate 21 and the lower clamping plate 27;

[0032] The adjustable clamping mechanism 3 includes a movable groove 31, an arc plate 32, anti-slip teeth 33 and a support and limit bolt 34. The movable groove 31 is opened on the side walls of the upper clamp plate 21 and the lower clamp plate 27. The arc plate 32 is hinged to the inside of the movable groove 31. Multiple anti-slip teeth 33 are fixedly connected to the side walls of the arc plate 32. The support and limit bolts 34 are respectively threadedly connected to the side walls of the upper clamp plate 21 and the lower clamp plate 27. Two support and limit bolts 34 are arranged as a group, and the bottom ends of the two support and limit bolts 34 are respectively located on the side walls at both ends of the arc plate 32.

[0033] In this embodiment: by setting the mounting plate 1, the upper clamping plate 21, the mounting cavity 22, the movable groove 23, the motor 24, the screw 25, the moving block 26, the lower clamping plate 27 and the adjustable clamping mechanism 3, the motor 24 drives the screw 25 shaft, the screw 25 and the moving block 26 threaded movement is subjected to the force to move in the direction of the upper clamping plate 21, the upper clamping plate 21 and the lower clamping plate 27 automatically clamp and fix the output shaft of the servo motor encoder, and the output shaft of the servo motor encoder with different diameters can be clamped and fixed by the adjustable clamping mechanism, and the clamped size can be adjusted; by setting the movable groove 31, the arc plate 32, the anti-slip teeth 33 and the support limit bolts 34, when the lower clamping plate 27 moves to the upper clamping plate 21, first the two arc plates 32 The arc plate 32 contacts the output shaft of the servo motor encoder. Due to the different sizes of the output shafts, the arc plate 32 is squeezed and moves inside the movable groove 31. The anti-slip teeth 33 can increase the friction between the arc plate 32 and the output shaft to prevent sliding between the arc plate 32 and the output shaft. After the arc plate 32 clamps and fixes the output shaft, multiple support and limit bolts 34 are rotated respectively to make their bottoms contact with the side walls of the arc plate 32. In this way, the arc plate 32 can be supported and limited to prevent the arc plate 32 from displacement. At this time, the movement range of the two arc plates 32 is limited, so that the two arc plates 32 can clamp and fix other output shafts with the same diameter as the output shaft in batches, thereby achieving the ability to clamp and fix output shafts of different diameters.

[0034] As a technical optimization solution of the present invention, a positioning groove 41 is provided on the side wall of the arc plate 32 away from the anti-slip teeth 33 , and the bottom end of the support limit bolt 34 is movably connected to the positioning groove 41 .

[0035] In this embodiment: by setting the positioning groove 41, when the support limiting bolt 34 contacts the arc plate 32, it will enter the positioning groove 41, which can increase the contact area between the support limiting bolt 34 and the arc plate 32, so that the support limiting bolt 34 can limit the arc plate 32.

[0036] As a technical optimization solution of the present invention, a base 51 is fixedly connected to the side wall at the bottom of the mounting plate 1 , a battery 52 is bolted inside the base 51 , and the battery 52 is electrically connected to the motor 24 .

[0037] In this embodiment, by providing a base 51 and a battery 52 , the whole can be easily placed and can provide electrical energy to the motor 24 .

[0038] As a technical optimization solution of the utility model, two support grooves 61 are provided on the side wall of the mounting plate 1 , and two support plates 62 are fixedly connected to the bottom surface of the lower clamping plate 27 , and the support plates 62 are movably connected to the support grooves 61 .

[0039] In this embodiment, the support groove 61 and the support plate 62 are provided to support the lower clamping plate 27 so as to prevent the lower clamping plate 27 from tilting when clamping the output shaft.

[0040] As a technical optimization solution of the present invention, a plurality of anti-skid rubber strips 71 are fixedly connected to the side wall of the arc-shaped plate 32 , and the anti-skid rubber strips 71 and the anti-skid teeth 33 are staggered.

[0041] In this embodiment, the anti-slip rubber strip 71 is provided to increase the friction between the contact surface of the arc plate 32 and the output shaft, thereby preventing the arc plate 32 and the output shaft from sliding.

[0042] As a technical optimization solution of the present invention, the bottom end of the support and limiting bolt 34 is arranged in an arc shape.

[0043] In this embodiment, by providing the support and limiting bolt 34 with an arc-shaped bottom end, the support and limiting bolt 34 can be easily inserted into the positioning groove 41 .

[0044] As a technical optimization solution of the present invention, a handle 81 is fixedly connected to the side wall of the mounting plate 1 .

[0045] In this embodiment, the handle 81 is provided to facilitate the user to carry the entire device.

[0046] As a technical optimization solution of the present invention, an anti-skid pad 91 is bonded to the bottom surface of the base 51 .

[0047] In this embodiment, the anti-skid pad 91 is provided to make the bottom of the base 51 have an anti-skid effect.

[0048] Working principle: First, the user carries the whole by the handle 81, so that the upper clamping plate 21 and the lower clamping plate 27 are located on both sides of the output shaft of the servo motor encoder, and the motor 24 drives the screw rod 25 to rotate. The screw rod 25 and the moving block 26 move in the direction of the upper clamping plate 21 under the force. When the lower clamping plate 27 moves to the upper clamping plate 21, the two arc plates 32 first contact the output shaft of the servo motor encoder. Due to the different sizes of the output shafts, the arc plates 32 are squeezed and move inside the movable groove 31. The anti-slip teeth 33 can increase the friction between the arc plates 32 and the output shaft. To prevent sliding between the arc plate 32 and the output shaft, after the arc plate 32 clamps and fixes the output shaft, multiple support and limit bolts 34 are rotated respectively so that their bottoms contact the side walls of the arc plate 32. In this way, the arc plate 32 can be supported and limited to prevent the arc plate 32 from displacement. At this time, the movement range of the two arc plates 32 is limited, and the two arc plates 32 can clamp and fix other output shafts of the same diameter as the output shaft in batches. In this way, the output shaft of the servo motor encoder can be automatically clamped, and output shafts of different diameters can be clamped and fixed.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero position calibration fixture for a composite code servo motor encoder, comprising a mounting plate (1), characterized in that: The top of the mounting plate (1) is fixedly connected to an upper clamping plate (21), the bottom of the mounting plate (1) is provided with a mounting cavity (22), a movable groove (23) is provided through the side wall of the mounting plate (1), a motor (24) is bolted to the side wall of the mounting cavity (22), a screw rod (25) is connected to the middle bearing of the mounting plate (1) and is fixedly connected to the output end of the motor (24), a movable block (26) threadedly connected to the screw rod (25) is movably provided inside the movable groove (23), a lower clamping plate (27) is fixedly connected to the side wall of the movable block (26), and adjustable clamping mechanisms (3) are provided on the side walls of the upper clamping plate (21) and the lower clamping plate (27); The adjustable clamping mechanism (3) comprises a movable groove (31), an arc plate (32), anti-slip teeth (33) and a support and limit bolt (34); the movable groove (31) is arranged on the side walls of the upper clamp plate (21) and the lower clamp plate (27); the arc plate (32) is hinged to the inside of the movable groove (31); a plurality of anti-slip teeth (33) are fixedly connected to the side walls of the arc plate (32); the support and limit bolts (34) are respectively threadedly connected to the side walls of the upper clamp plate (21) and the lower clamp plate (27); two support and limit bolts (34) are arranged as a group; the bottom ends of the two support and limit bolts (34) are respectively located on the side walls at both ends of the arc plate (32).

2. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: A positioning groove (41) is provided on the side wall of the arc-shaped plate (32) away from the anti-slip teeth (33), and the bottom end of the support limiting bolt (34) is movably connected to the positioning groove (41).

3. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: A base (51) is fixedly connected to the side wall at the bottom of the mounting plate (1), a battery (52) is bolted inside the base (51), and the battery (52) is electrically connected to the motor (24).

4. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: Two support grooves (61) are provided on the side wall of the mounting plate (1), and two support plates (62) are fixedly connected to the bottom surface of the lower clamping plate (27), and the support plates (62) are movably connected to the support grooves (61).

5. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: A plurality of anti-skid rubber strips (71) are fixedly connected to the side wall of the arc-shaped plate (32), and the anti-skid rubber strips (71) and the anti-skid teeth (33) are arranged in a staggered manner.

6. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: The bottom end of the support and limiting bolt (34) is arranged in an arc shape.

7. The zero position calibration fixture for composite code servo motor encoder according to claim 1, characterized in that: A handle (81) is fixedly connected to the side wall of the mounting plate (1).

8. The zero position calibration fixture for composite code servo motor encoder according to claim 3, characterized in that: An anti-slip pad (91) is bonded to the bottom surface of the base (51).

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