CN203908527U - Radial-direction composition error detection apparatus for revolving axle - Google Patents

Abstract

The utility model relates to a radial comprehensive error detection device of a rotary shaft, which belongs to the field of mechanical measurement. The square supporting plate is connected with the lifting screw, the lifting nut is fixedly connected with the square supporting plate, the lifting screw is threaded with the lifting nut, the square supporting plate is slidably connected with the fixed bracket, the three lifting pillars are fixed on the supporting plate, and the guide rail is fixed with the lifting pillar Connection, the ball screw is supported in the guide rail through the bearing seat, the ball screw is threaded with the screw nut, the locking mechanism is connected with the ball screw, the fixed slide seat is fixedly connected with the screw nut, and the linear displacement sensor A precision displacement measuring head is arranged on the top, the detection bracket is fixedly connected with the base, the output shaft of the drive motor is fixedly connected with the shaft coupling, and the angle sensor is fixedly connected with the fixture. The advantages are that the structure is novel, the installation is simple, the detection and data recording can be carried out, the detection accuracy is improved, the human error is reduced, the labor intensity is reduced, and the labor efficiency is improved.

Description

Rotary shaft radial comprehensive error detection device

technical field

The utility model relates to the field of mechanical measurement, in particular to a radial comprehensive error detection device of a rotary shaft, which is used for detecting the radial rotary error and the inclination rotary error of the rotary shaft.

Background technique

The rotation error of the rotary axis is the main factor affecting the machining accuracy. Through the detection and analysis of the rotation error, it can be used to compensate and control the machining error and judge the cause of the machining error. Therefore, the detection of the rotation error of the rotary shaft is very important. At present, the detection of the radial comprehensive error of the rotary shaft generally adopts the comprehensive detection of gear double-sided meshing. The principle is to adjust the position according to the theoretical center distance of the measuring gear and the measured gear. Double-sided meshing, through the rotation of the measured gear, the error between the actual center distance and the theoretical center distance is defined as the radial comprehensive error. This detection method has the following disadvantages: First, there is a shape error between the measuring gear and the measured gear, and a radial error occurs during the meshing process. Second, there are matching errors between the measuring gear and the vertical shaft and the measured gear and the rotary shaft. Third, thermal deformation occurs during the meshing process of the gears. The above defects will affect the detection of the radial comprehensive error of the rotary shaft, resulting in measurement results. Inaccurate.

Contents of the invention

The utility model provides a radial comprehensive error detection device of a rotary shaft to solve the problem of inaccurate measurement results caused by the influence of the current device on the detection of the radial comprehensive error of the rotary shaft.

The technical solution adopted by the utility model is: the fixed bracket is fixedly connected with the base, the lifting screw is connected with the fixed bracket in rotation, the square supporting plate is connected with the lifting screw, the lifting nut is fixedly connected with the square supporting plate, and the lifting screw is threadedly connected with the lifting nut , the square support plate is slidingly connected with the fixed bracket, the second bevel gear is fixedly connected with the lower part of the lifting screw, the first bevel gear is fixedly connected with the crank handle one, the first bevel gear is meshed with the second bevel gear, and the three lifting pillars are fixed on the support plate. The pillar protrudes upwards through the top of the fixed bracket, the guide rail is fixedly connected with the lifting pillar, the ball screw is supported in the guide rail through the bearing seat, the ball screw is screwed with the screw nut, and the locking mechanism is connected with the ball screw Rod connection, one end of the ball screw is fixedly connected with the crank handle two, the screw nut is threadedly connected with the ball screw, the fixed slide seat is fixedly connected with the lead screw nut, the support frame is fixedly connected with the fixed slide seat, and the linear displacement sensor is fixed with the support frame The linear displacement sensor is equipped with a precision displacement measuring head, the detection bracket is fixedly connected with the base, the driving motor is fixed on the detection bracket through the flange, and the output shaft of the driving motor is fixedly connected with the shaft coupling. The other end of the device is fixedly connected with the jig, and the angle sensor is fixedly connected with the jig.

The structure of the locking mechanism is: a ball bearing 1 and a lock nut are respectively placed in the fixed seat, the ball screw is rotationally connected with the ball bearing 1 and the lock nut, and the sleeve is sleeved on the outside of the ball screw and positioned on the ball screw. Between the first bearing and the fixed seat, the fixed sleeve is sleeved on the outside of the ball screw and is located between the lock nut and the second ball bearing, and the lock screw is threadedly connected with the lock nut.

The utility model has the advantages of novel structure, simple installation, and can be moved and adjusted in the radial and longitudinal directions of the rotary shaft, so that the detection and adjustment are more convenient, human interference is reduced, and detection accuracy is ensured. The precision displacement measuring head moves with the linear displacement sensor in the radial and axial directions. It can detect the radial comprehensive error of different positions of the rotary shaft, detect and record data, improve the detection accuracy, reduce human errors, and reduce labor intensity. Improve labor efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is a sectional view along line BB of Fig. 1 .

Detailed ways

The fixed bracket 3 is fixedly connected with the base 1, the lifting screw 6 is rotationally connected with the fixed bracket 3, the square supporting plate 4 is connected with the lifting screw 6, the lifting nut 5 is fixedly connected with the square supporting plate 4, and the lifting screw 6 is threaded with the lifting nut 5 Connection, the square support plate 4 is slidingly connected with the fixed bracket 3, the second bevel gear 24 is fixedly connected with the lower part of the lifting screw 6, the first bevel gear 23 is fixedly connected with the crank handle one 2, the first bevel gear 23 is meshed with the second bevel gear 24, and three The lifting pillar 7 is fixed on the support plate 4, the lifting pillar 7 protrudes upwards through the top of the fixed bracket 3, the guide rail 12 is fixedly connected with the lifting pillar 7, and the ball screw 11 is supported in the guide rail 12 through the bearing seat 10 , the ball screw 11 is threaded with the screw nut 13, the locking mechanism 9 is connected with the ball screw, one end of the ball screw 11 is fixedly connected with the handle 2 8, the screw nut 13 is threaded with the ball screw, and the fixed slide Seat 14 is fixedly connected with lead screw nut 13, and support frame 15 is fixedly connected with fixed sliding seat 14, and line displacement sensor 16 is fixedly connected with support frame 15, and this line displacement sensor 16 is provided with precision displacement measuring head 17, and detection support 21 and The base 1 is fixedly connected, the driving motor 22 is fixed on the detection bracket 21 through a flange, the output shaft of the driving motor 22 is fixedly connected to the coupling 20, and the other end of the coupling 20 is fixedly connected to the clamp 19, and the angle The sensor 18 is fixedly connected with the fixture 19 .

The structure of the locking mechanism 9 is as follows: a ball bearing 903 and a lock nut 905 are respectively placed in the fixed seat 901, the ball screw 11 is rotationally connected with the ball bearing 903 and the lock nut 905, and the sleeve 902 is socketed Outside the ball screw and between the ball bearing 1 903 and the fixing seat 901, the fixing sleeve 906 is sleeved outside the ball screw and between the lock nut 905 and the ball bearing 2 26, the lock screw 904 and the lock nut 905 threaded connection.

Working principle, the measured shaft 25 is fixedly connected to the jig 19, the rotating handle 12 drives the bevel gear 1 23 to rotate, the bevel gear 1 23 drives the bevel gear 2 24 to rotate, the bevel gear 2 24 drives the lifting screw 6 to rotate, and the lifting screw 6 drives the lifting nut 5 to lift the support plate 4, drives the guide rail 12 on the lifting pillar 7 to lift and rotate the handle 2 8 to rotate the ball screw 11, and the ball screw 11 drives the screw nut 13 to make the fixed slide 14 move radially, The linear displacement sensor 16 is provided with a precision displacement probe 17. When the precision displacement probe 17 is adjusted to a suitable position, the locking screw 904 is adjusted to increase the pre-tightening force of the lock nut 905 and the lead screw 11 to lock the position. Can, detect the radial error information under the rotation state of the rotary shaft 25 through the precision displacement probe 17; the linear displacement sensor 16 and the angular displacement sensor 18 are finally connected with the host computer through wires, and the angular displacement sensor 18 is used to detect For the rotation angle error information of the rotary shaft 25, the angle sensor 18 is arranged on the jig 19, and rotates with the jig 19 to start the drive motor 22 to drive the shaft coupling 20 to rotate, so that the rotary shaft 25 rotates in a circle.

Claims (2)

1. a revolving shaft radial composite error pick-up unit, it is characterized in that: fixed support is fixedly connected with base, lifting screw and fixed support are rotationally connected, square step disk and lifting screw cross-under, lifting nut is fixedly connected with square supporting disk, lifting screw is threaded with this lifting nut, square step disk and fixed support are slidably connected, bevel gear two is fixedly connected with lifting screw below, bevel gear one is fixedly connected with crank one, bevel gear one is connected with a joggle with bevel gear two, three lifting supports are fixed on supporting disk, lifting support protrudes upward through support bracket fastened top, guide rail is fixedly connected with lifting support, ball-screw is supported in described guide rail by described bearing seat, ball-screw is threaded with feed screw nut, tight latch mechanism is connected with this ball-screw, ball-screw one end is fixedly connected with crank two, feed screw nut is threaded with ball-screw, fixing slide carriage is fixedly connected with feed screw nut, bracing frame is fixedly connected with fixing slide carriage, linear movement pick-up is fixedly connected with bracing frame, this linear movement pick-up is provided with accurate displacement gauge head, Bracket for Inspection is fixedly connected with base, drive motor is fixed on this Bracket for Inspection by flange, the output shaft of drive motor is fixedly connected with shaft coupling, the described shaft coupling other end is fixedly connected with jig, angular transducer is fixedly connected with jig.

2. revolving shaft radial composite error pick-up unit according to claim 1, it is characterized in that: the structure of described tight latch mechanism is: in holder, be placed with respectively ball bearing one and set nut, ball-screw and ball bearing one and set nut are rotationally connected, jacket casing is connected on ball-screw outside and is positioned between ball bearing one and holder, fixed cover is socketed in ball-screw outside and between set nut and ball bearing two, lock-screw is threaded with set nut.