CN220304573U - Encoder calibrating device - Google Patents

Abstract

The application provides an encoder calibrating device, including testboard, connecting axle, two fixing bases, driven gear, moving mechanism, elevating system, motor and driving gear. Through setting up rotatable connecting axle on the testboard, set up driven gear and two fixing bases on the connecting axle, fix high accuracy encoder and the encoder that awaits measuring through two fixing bases, through setting up elevating system at elevating system's motion end, set up the motor at elevating system's elevating end, the motor drives the driving gear and rotates, and then drive driven gear, the connecting axle, high accuracy encoder and the encoder that awaits measuring rotate, make high accuracy encoder and the encoder that awaits measuring rotatory same angle, the output signal of high accuracy encoder and the encoder that awaits measuring is received to external computer compares, thereby treat to survey the encoder and calibrate.

Description

Encoder calibrating device

Technical Field

The application belongs to the technical field of encoder calibration, and particularly relates to an encoder calibration device.

Background

An encoder is a device that compiles, converts, or converts a signal (e.g., a bit stream) or data into a signal form that can be used for communication, transmission, and storage. The encoder converts angular displacement, referred to as a code wheel, or linear displacement, referred to as a code scale, into an electrical signal. The encoders can be classified into contact type and non-contact type according to the read-out mode, and can be classified into incremental type and absolute type according to the working principle, and the encoders need to be calibrated by a calibrating device in the using process of the encoders.

The existing encoder calibration device drives the encoder to rotate through a mode that the motor is used as driving force and meanwhile the belt transmits motion in the calibration process, but because the belt transmission has slipping phenomenon, the output rotating speed is unstable, the calibration effect of the device is affected, and the practicability of the device is reduced.

Disclosure of Invention

The embodiment of the application provides an encoder calibrating device, through driving gear and driven gear meshing transmission, stability when keeping the transmission, driven gear has two sets of simultaneously, during the calibration, the driven gear of optional difference is connected with driving gear, and then can export different rotational speeds, guarantee the calibration effect of device, the improvement device practicality, the present encoder calibrating device has been solved to this application, it is rotatory to drive the encoder through the mode of belt transmission motion in the calibration process, because belt transmission has the phenomenon of skidding, and then the rotational speed that leads to the output is unstable, influence the calibration effect of device, the problem of reducing device practicality.

The embodiment of the application provides an encoder calibration device, which comprises a test board, a connecting shaft, two fixing seats, a driven gear, a moving mechanism, a lifting mechanism, a motor and a driving gear;

the test board has the loading surface, the one end of connecting axle with the loading surface rotates to be connected, the other end of connecting axle extends along the Z axle, two fixing bases all set firmly in on the connecting axle, two fixing bases are used for fixed high accuracy encoder and the encoder that awaits measuring respectively, high accuracy encoder and the encoder that awaits measuring all are connected with the electricity, driven gear includes first driven gear and second driven gear, first driven gear with the second driven gear diameter is different, first driven gear with the second driven gear all sets firmly in on the connecting axle, moving mechanism set up in on the test board, moving mechanism's moving end can follow X axis direction motion, elevating system set up in moving mechanism's moving end, elevating system's elevating end can follow Z axis direction motion, the motor set up in elevating system's elevating end, the driving gear set firmly in the output of motor, the driving gear with first driven gear or second driven gear meshes mutually.

In a possible implementation manner, the encoder calibration device further comprises an auxiliary fixing mechanism, wherein the auxiliary fixing mechanism is fixedly arranged on the test bench and comprises a bracket, an electric push rod and a pressing plate;

the support is fixedly arranged on the test bench, the support is provided with a mounting surface facing the end face of the connecting shaft, the electric push rod is fixedly arranged on the mounting surface, the telescopic end of the electric push rod faces the connecting shaft, the pressing plate is fixedly arranged at the telescopic end of the electric push rod, and the pressing plate is attached to the end face of the connecting shaft or the fixing seat.

In a feasible implementation mode, the auxiliary fixing mechanism further comprises a rubber cushion, the rubber cushion is fixedly arranged on the side, opposite to the electric push rod, of the pressing plate, and the outer wall of the rubber cushion is attached to the connecting shaft or the end face of the fixing seat.

In a feasible implementation mode, a through groove is formed in the bearing surface of the test board, a supporting plate is arranged at the end part of the through groove, the moving mechanism is fixedly arranged on the supporting plate, and the moving mechanism comprises a first telescopic rod and a sliding plate;

the utility model discloses a slide, including layer board, slide, elevating system, slide, first telescopic link, slide, first telescopic link set firmly in on the layer board, first telescopic link extends along the X axle, and flexible end orientation the connecting axle, the slide with the flexible end of first telescopic link is connected, the outer wall of slide is equipped with the spout, the inner wall of layer board is equipped with the slide rail, the slide rail with spout sliding connection, elevating system set firmly in on the slide.

In one possible implementation, the lifting mechanism includes a second telescoping rod and a lifting plate;

the second telescopic rod is fixedly arranged on the sliding plate, the second telescopic rod extends along the Z axis, and the lifting plate is fixedly arranged at the telescopic end of the second telescopic rod.

In a possible implementation manner, the encoder calibration device further comprises a main control machine, the main control machine is fixedly arranged on the test bench, the main control machine is respectively and electrically connected with the first telescopic rod, the second telescopic rod and the motor, and the main control machine is configured to respectively control the first telescopic rod, the second telescopic rod and the motor to operate.

In one possible implementation, the fixing base includes a frame, two outer tubes, two inner tubes, two springs, and two clamping plates;

the frame set firmly in on the connecting axle, just the central line of frame with the central axis coincidence of connecting axle, two outer tube set firmly respectively in the both sides inner wall of frame, two the inner tube respectively with two outer tube peg graft mutually, two the spring is located two respectively the outer tube, the both ends of spring respectively with the outer tube with the tip inner wall looks butt of inner tube, two splint set up relatively, and respectively with two the end connection of inner tube, two splint centre gripping high accuracy encoder or the encoder that awaits measuring.

In one possible implementation manner, the end parts of the two clamping plates are provided with guiding sloping plates, and the opposite surfaces of the two clamping plates are provided with anti-skid pads.

This application embodiment provides an encoder calibrating device, through set up rotatable connecting axle on the testboard, set up driven gear and two fixing bases on the connecting axle, fix high accuracy encoder and the encoder that awaits measuring through two fixing bases, through set up elevating system at elevating system's motion end, the elevating system's elevating system, the motor drives the driving gear and rotates, and then drive driven gear, the connecting axle, high accuracy encoder and the encoder that awaits measuring rotate, make high accuracy encoder and the encoder rotation the same angle that awaits measuring, external computer receives the output signal of high accuracy encoder and the encoder that awaits measuring, and compare, thereby the encoder that awaits measuring is calibrated, the application is through reasonable in design, and a structure, and is convenient to use, can whole calibration process go on fully automatically, and, through driving gear and driven gear meshing transmission, the stationarity during the maintaining transmission, driven gear has two sets of simultaneously, during the calibration, different driven gears can be selected and be connected with driving gear, and then can output different rotational speeds, guarantee the calibration effect of device, the practicality is improved.

Drawings

FIG. 1 is a schematic diagram of an encoder calibration device provided herein;

FIG. 2 is a cross-sectional view of an encoder calibration device provided herein;

fig. 3 is a schematic structural view of the fixing base.

Reference numerals illustrate:

10-a test bench; 20-connecting shafts; 30-fixing seats; 40-driven gear; 50-a moving mechanism; 60-lifting mechanism; 70-motor; 80-a drive gear; 90-an auxiliary fixing mechanism;

11-through grooves; 12-supporting plates; 31-a frame; 32-an outer tube; 33-an inner tube; 34-a spring; 35-clamping plates; 36-guiding sloping plate; 37-non-slip mat; 41-a first driven gear; 42-a second driven gear; 51-a first telescopic rod; 52-a skateboard; 61-a second telescopic rod; 62-lifting plate; 91-a bracket; 92-an electric push rod; 93-pressing plate; 94-rubber cushion.

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

Referring to fig. 1-2, an embodiment of the present application provides an encoder calibration device, which includes a test bench 10, a connecting shaft 20, two fixing bases 30, a driven gear 40, a moving mechanism 50, a lifting mechanism 60, a motor 70, and a driving gear 80;

the test board 10 is of a square table structure, the upper surface of the test board 10 is a bearing surface, the connecting shaft 20 is a cylinder vertically arranged along the Z axis, one end of the connecting shaft 20 is rotationally connected with the bearing surface, the two fixing seats 30 are fixedly arranged on the connecting shaft 20, the two fixing seats 30 are respectively used for fixing a high-precision encoder and an encoder to be tested, the high-precision encoder and the encoder to be tested are electrically connected with each other, an external computer receives and compares detection signals output by the high-precision encoder and the encoder to be tested, so that the encoder to be tested is calibrated, the driven gear 40 comprises a first driven gear 41 and a second driven gear 42, the diameters of the first driven gear 41 and the second driven gear 42 are different, and the first driven gear 41 and the second driven gear 42 are fixedly arranged on the connecting shaft 20;

the moving mechanism 50 is arranged on the test bench 10, the moving end of the moving mechanism 50 can move along the X-axis direction, the lifting mechanism 60 is arranged at the moving end of the moving mechanism 50, the lifting end of the lifting mechanism 60 can move along the Z-axis direction, the motor 70 is arranged at the lifting end of the lifting mechanism 60, the driving gear 80 is fixedly arranged at the output end of the motor 70, and the positions of the motor 70 and the driving gear 80 are adjusted through the cooperation of the moving mechanism 50 and the lifting mechanism 60, so that the driving gear 80 is meshed with the first driven gear 41 or the second driven gear 42, and then the high-precision encoder and the encoder to be tested are driven to synchronously rotate.

According to the encoder calibration device provided by the embodiment of the application, the rotatable connecting shaft 20 is arranged on the test bench 10, the driven gear 40 and the two fixing seats 30 are arranged on the connecting shaft 20, the high-precision encoder and the encoder to be calibrated are fixed through the two fixing seats 30, the lifting mechanism 60 is arranged at the moving end of the moving mechanism 50, the motor 70 is arranged at the lifting end of the lifting mechanism 60, the motor 70 drives the driving gear 80 to rotate, the driven gear 40, the connecting shaft 20, the high-precision encoder and the encoder to be calibrated are driven to rotate, the high-precision encoder and the encoder to be calibrated are enabled to rotate by the same angle, the external computer receives output signals of the high-precision encoder and the encoder to be calibrated, and the output signals of the encoder to be calibrated are compared.

Referring to fig. 2, in some embodiments, the encoder calibration device further includes an auxiliary fixing mechanism 90, where the auxiliary fixing mechanism 90 is fixed on the test stand 10, and the auxiliary fixing mechanism 90 includes a bracket 91, an electric push rod 92, and a pressing plate 93;

the support 91 may be between the L type, and the one end testboard 10 fixed connection of support 91, and the upper portion of support 91 has the installation face towards connecting axle 20 terminal surface, and electric putter 92 sets firmly in the installation face, and electric putter 92's flexible end is towards connecting axle 20, and clamp plate 93 sets firmly in electric putter 92's flexible end, and clamp plate 93 laminates with the terminal surface of connecting axle 20 or fixing base 30 mutually.

In some embodiments, the auxiliary fixing mechanism 90 further includes a rubber pad 94, the rubber pad 94 is fixedly disposed on the side of the pressing plate 93 opposite to the electric push rod 92, and the outer wall of the rubber pad 94 is attached to the end face of the connecting shaft 20 or the fixing seat 30;

when the electric push rod 92 is shortened, the rubber pad 94 is not in contact with the connecting shaft 20 and the fixed seat 30, the connecting shaft 20 can rotate freely, when the electric push rod 92 is extended after reaching a specified angle in calibration, the rubber pad 94 is enabled to press down the connecting shaft 20 or the fixed seat 30, the connecting shaft 20 is fixed through static friction force, and therefore the angles of a high-precision encoder and an encoder to be measured are fixed, and the accuracy of calibration is guaranteed.

Referring to fig. 2, in some embodiments, a carrying surface of the test board 10 is provided with a through groove 11, the through groove 11 may be a square groove, an end of the through groove 11 is provided with a supporting plate 12, the supporting plate 12 may be an L-shaped supporting plate, the moving mechanism 50 is fixedly arranged on the supporting plate, and the moving mechanism 50 includes a first telescopic rod 51 and a sliding plate 52;

the first telescopic rod 51 may be an electric push rod, the first telescopic rod 51 is fixedly arranged on the supporting plate 12, the first telescopic rod 51 extends along the transverse X axis, the telescopic end faces the connecting shaft 20, the sliding plate 52 is connected with the telescopic end of the first telescopic rod 51, a sliding groove is formed in the outer wall of the sliding plate 52, a sliding rail is arranged on the inner wall of the supporting plate 12, the sliding rail is in sliding connection with the sliding groove, the lifting mechanism 60 is fixedly arranged on the sliding plate 52, and the sliding plate 52, the lifting mechanism 60 and the motor 70 are driven to move left and right through the telescopic action of the first telescopic rod 51.

In some embodiments, the lifting mechanism 60 includes a second telescoping rod 61 and a lifting plate 62;

the second telescopic rod 61 may be an electric push rod, the second telescopic rod 61 is vertically fixed on the sliding plate 52, the second telescopic rod 61 extends along the Z axis, the lifting plate 62 is fixedly arranged at the telescopic end of the second telescopic rod 61, the lifting plate 62 is matched with the through groove 11, the motor 70 is fixed on the lifting plate 62, and the motor 70 is driven to lift through the telescopic action of the second telescopic rod 61.

In some embodiments, the encoder calibration device further includes a main control computer, the main control computer is fixedly arranged on the test bench 10, and the main control computer is respectively and electrically connected with the electric push rod 92, the first telescopic rod 51, the second telescopic rod 61 and the motor 70, and is configured to respectively control the electric push rod 92, the first telescopic rod 51, the second telescopic rod 61 and the motor 70 to operate, so that automatic calibration is realized, and the encoder calibration device is convenient to use.

Referring to fig. 1 and 3, in some embodiments, the holder 30 includes a frame 31, two outer tubes 32, two inner tubes 33, two springs 34, and two clamping plates 35;

the frame 31 may be a square frame, the frame 31 is fixedly arranged on the connecting shaft 20, the center line of the frame 31 coincides with the center axis of the connecting shaft 20, the two outer pipes 32 are respectively fixedly arranged on the inner walls of the two sides of the frame 31, the two inner pipes 33 are respectively spliced with the two outer pipes 32, the inner pipes 33 and the outer pipes 32 are not separated, the two springs 34 are respectively positioned in the two outer pipes 32, the springs 34 are in a compression state at any moment, the two ends of the springs 34 are respectively abutted against the inner walls of the end parts of the outer pipes 32 and the inner pipes 33, the clamping plates 35 are arc-shaped clamping plates, the two clamping plates 35 are oppositely arranged and are respectively connected with the end parts of the two inner pipes 33, and the two clamping plates 35 clamp a high-precision encoder or an encoder to be tested;

the encoder is generally cylindrical, so, set up two splint 35 as symmetrical arc splint, when two arc splint centre gripping cylindrical encoder, not only the centre gripping is stable, but also automatic positioning axis, it is coaxial to guarantee high accuracy encoder and the encoder that awaits measuring, and then guarantees the accuracy of calibration.

In some embodiments, the end portions of the two clamping plates 35 are provided with the guiding inclined plates 36, and the front ends of the two guiding inclined plates 36 incline to two sides, so that the encoder is convenient to insert between the two clamping plates 35, and the opposite surfaces of the two clamping plates 35 are provided with the anti-slip pads 37, so that the clamping stability is improved.

It is to be understood that, based on the several embodiments provided in the present application, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, where none of the embodiments exceed the protection scope of the present application.

The foregoing detailed description of the embodiments of the present application has further described the objects, technical solutions and advantageous effects thereof, and it should be understood that the foregoing is merely a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims (8)

1. An encoder calibration device, characterized in that: comprising the following steps:

a test bench (10), the test bench (10) having a bearing surface;

the connecting shaft (20), one end of the connecting shaft (20) is rotationally connected with the bearing surface, and the other end of the connecting shaft (20) extends along the Z axis;

the two fixing seats (30), the two fixing seats (30) are fixedly arranged on the connecting shaft (20), the two fixing seats (30) are respectively used for fixing a high-precision encoder and an encoder to be detected, and the high-precision encoder and the encoder to be detected are electrically connected with each other;

the driven gear (40), the driven gear (40) comprises a first driven gear (41) and a second driven gear (42), the diameters of the first driven gear (41) and the second driven gear (42) are different, and the first driven gear (41) and the second driven gear (42) are fixedly arranged on the connecting shaft (20);

the moving mechanism (50) is arranged on the test table (10), and the moving end of the moving mechanism (50) can move along the X-axis direction;

the lifting mechanism (60) is arranged at the moving end of the moving mechanism (50), and the lifting end of the lifting mechanism (60) can move along the Z-axis direction;

a motor (70), wherein the motor (70) is arranged at the lifting end of the lifting mechanism (60);

the driving gear (80), the driving gear (80) is fixedly arranged at the output end of the motor (70), and the driving gear (80) is meshed with the first driven gear (41) or the second driven gear (42).

2. The encoder calibration device of claim 1, wherein:

still include auxiliary fixing mechanism (90), auxiliary fixing mechanism (90) set firmly in on testboard (10), auxiliary fixing mechanism (90) include:

the bracket (91) is fixedly arranged on the test bench (10), and the bracket (91) is provided with a mounting surface facing the end surface of the connecting shaft (20);

the electric push rod (92) is fixedly arranged on the mounting surface, and the telescopic end of the electric push rod (92) faces the connecting shaft (20);

the pressing plate (93), pressing plate (93) set firmly in the flexible end of electric putter (92), pressing plate (93) with connecting axle (20) or terminal surface of fixing base (30) laminating mutually.

3. The encoder calibration device of claim 2, wherein:

also comprises a rubber pad (94);

the rubber pad (94) is fixedly arranged on the side, opposite to the electric push rod (92), of the pressing plate (93), and the outer wall of the rubber pad (94) is attached to the end face of the connecting shaft (20) or the end face of the fixing seat (30).

4. The encoder calibration device of claim 1, wherein:

the bearing surface of testboard (10) is equipped with logical groove (11), the tip of logical groove (11) is equipped with layer board (12), moving mechanism (50) set firmly on the layer board, moving mechanism (50) include:

the first telescopic rod (51) is fixedly arranged on the supporting plate (12), the first telescopic rod (51) extends along the X axis, and the telescopic end faces the connecting shaft (20);

the sliding plate (52), sliding plate (52) with the flexible end connection of first telescopic link (51), the outer wall of sliding plate (52) is equipped with the spout, the inner wall of layer board (12) is equipped with the slide rail, the slide rail with spout sliding connection, elevating system (60) set firmly on sliding plate (52).

5. The encoder calibration device of claim 4, wherein:

the lifting mechanism (60) comprises:

the second telescopic rod (61) is fixedly arranged on the sliding plate (52), and the second telescopic rod (61) extends along the Z axis;

lifting plate (62), lifting plate (62) set firmly in the flexible end of second telescopic link (61), motor (70) set firmly in on lifting plate (62).

6. The encoder calibration device of claim 5, wherein:

the encoder calibration device also comprises a main control computer;

the main control machine is fixedly arranged on the test bench (10), the main control machine is respectively and electrically connected with the first telescopic rod (51), the second telescopic rod (61) and the motor (70), and the main control machine is configured to respectively control the first telescopic rod (51), the second telescopic rod (61) and the motor (70) to run.

7. The encoder calibration device of claim 1, wherein:

the fixing base (30) comprises:

the frame (31) is fixedly arranged on the connecting shaft (20), and the central line of the frame (31) is coincident with the central line of the connecting shaft (20);

the two outer pipes (32), the two outer pipes (32) are respectively fixed on the inner walls of the two sides of the frame (31);

the two inner pipes (33), the two inner pipes (33) are respectively spliced with the two outer pipes (32);

the two springs (34) are respectively positioned in the two outer tubes (32), and two ends of the springs (34) are respectively abutted against the inner walls of the end parts of the outer tubes (32) and the inner tubes (33);

the two clamping plates (35), the two clamping plates (35) are oppositely arranged and are respectively connected with the end parts of the two inner pipes (33), and the two clamping plates (35) clamp the high-precision encoder or the encoder to be detected.

8. The encoder calibration device of claim 7, wherein:

the ends of the two clamping plates (35) are provided with guide sloping plates (36);

the opposite surfaces of the two clamping plates (35) are provided with anti-slip pads (37).