CN218017437U - Cylinder type gyration precision detection frock - Google Patents

Abstract

The utility model provides a cylinder type gyration precision detection frock, include: the disc body and the cylinder body; the disc body is provided with a groove which is annular and concentric with the disc body, the cylinders are arranged in the groove, gaps are formed among the cylinders and are equal, and the axis of the disc body is superposed with the rotating shaft. The utility model provides a cylindrical rotary precision detection tool, which is arranged on a workbench; the workbench rotates by a set angle; and measuring the rotation angle of the cylinder. The utility model discloses a gyration precision measurement frock and detection method, can be simple and convenient, accurate carry out positioning accuracy to five-axis machine tool rotation axis and detect and rectify.

Description

Cylinder type gyration precision detection frock

Technical Field

The utility model relates to a lathe detects technical field, especially relates to a cylinder type gyration precision detects frock.

Background

At present, five-axis numerical control machines are more and more, the rotation positioning precision of the machine tool needs to be regularly corrected and compensated, and in the prior art, a laser interferometer is generally adopted for correction and compensation means.

However, when the laser interferometer is used for checking and correcting the positioning accuracy of the rotating shaft, not only the operation is very troublesome, but also the accuracy of the checking and correcting is difficult to guarantee, which seriously influences the processing of the machine tool on the high-accuracy workpiece.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cylinder type gyration precision detects frock to solve above-mentioned problem.

The utility model provides a cylinder type gyration precision detection frock, includes: the disc body and the cylinder body;

the tray body is provided with a groove, the groove is annular and concentric with the tray body, the cylinders are arranged in the groove, the axes of the cylinders are perpendicular to the tray body, gaps are formed between the cylinders and equal to each other, and the axes of the tray body coincide with the rotary axis.

Further, the outer wall of the groove is provided with a round hole, and the round hole faces to the space between the cylinders.

Furthermore, the positioning device comprises a positioning piece with a cone at the end part, wherein the positioning piece can extend into the round hole, so that the conical surface of the cone is abutted against the side surface of the cylinder.

Further, the diameter of the positioning piece is smaller than that of the round hole.

Further, the bottom of recess is equipped with the boss, the boss upper surface with the cylinder butt.

Furthermore, the turntable further comprises a centering rod, the turntable body is provided with a central hole, and the axis of the centering rod is superposed with the rotary axis of the workbench and is superposed with the axis of the central hole.

The utility model discloses a cylinder type gyration precision detection frock and detection method, can be simple and convenient, accurate carry out positioning accuracy to five-axis machine tool rotation axis and detect and rectify, the utility model discloses a cylinder type gyration precision detection frock manufacturing method can produce the utility model discloses a cylinder type gyration fastening detects frock to have the high accuracy, satisfy the operation requirement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a cylindrical rotation precision detection tool disclosed in an embodiment of the present invention;

fig. 2 is a top view of a cylindrical rotation precision detecting tool disclosed in an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken from the perspective A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

FIG. 5 is an enlarged view of portion C of FIG. 3;

fig. 6 is a side view of the cylindrical rotary precision detecting tool disclosed in the embodiment of the present invention.

In the figure:

1. a tray body; 11. a groove; 12. a circular hole; 13. a boss; 14. a central bore;

2. a cylinder;

3. a centering rod;

4. a positioning member.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a cylindrical rotation precision detection tool includes: a disc body 1 and a cylinder 2;

the disc body 1 is provided with an annular groove 11 concentric with the disc body 1, the cylinders 2 are arranged in the groove 11, the axes of the cylinders 2 are perpendicular to the disc body 1, gaps are formed among the cylinders 2, the gaps among the cylinders 2 are equal, and the axes of the disc body 1 are coincident with the rotation axis.

The cylinder in this embodiment adopts high accuracy stainless steel cylinder, and recess 11 is the annular groove, and the annular groove is concentric with disk body 1, and the clearance between the cylinder is very little, and the cylinder is close to full dress.

The circumference is equally divided into a plurality of parts by the cylinder, and because the precision of the cylinder is very high, when the disk body 1 rotates around the axis of the cylinder, the corresponding angles of the same positions on each cylinder are the same. Specifically, when the disk 1 is fixed on a table on which the rotary shaft is located, the table rotates, the disk rotates accordingly, the servo motor drives the table to rotate by a fixed angle, and an angle error between an actual rotation angle of the table and a rotation angle driven by the servo motor can be measured by a high-precision cylinder arranged at equal intervals. The cylinders equally divide the circumference, the angle corresponding to each cylinder is fixed, the angle rotated by the servo motor is set as a fixed multiple of the angle corresponding to each cylinder, the actual rotated angle of the disk body can be calculated by measuring the change of the relatively same position on each cylinder, the rotated angle of the disk body is the rotated angle of the workbench, the error alpha of the rotated angle of the workbench can be obtained, and the obtained angle error and the angle corresponding to the rotation compensation file of the numerical control system are used for determining a new angle compensation value +/-alpha.

The outer wall of the groove 11 is provided with a round hole 12, and the round hole 12 faces between the cylinders 2.

Between a plurality of cylinders 2, for convenient observation, set for the cylinder apart from nearest point as the check point, accessible high power microscope observation is measured, or modes such as laser survey detect the position of this point, and then obtain the angle that the disk body rotated. For the convenience of measurement, the circular hole 12 is directed to a position between the cylinders 2, i.e., to a detection point, which can be observed through the circular hole 12. As shown in fig. 6, the number of circular holes 12 is the same as the number of cylinders 2, i.e. the gap between each two cylinders 2 can be observed through the circular holes 12.

As shown in fig. 4, the present embodiment further includes a positioning element 4 having a cone at an end thereof, and the positioning element 4 can extend into the circular hole 12, so that the cone of the cone abuts against the side surface of the cylinder 2.

The positioning member 4 may be provided in one, and when the position of the cylinder is not fixed, is used to determine the approximate position of the cylinder, and after determining the approximate position of one cylinder, the approximate positions of all the remaining cylinders may also be determined, or a plurality of positioning members may be provided, so as to further define the approximate positions of the cylinders, and reduce the error of the gap superposition between the cylinders.

The diameter of the positioning piece 4 is smaller than that of the round hole 12, the positioning piece 4 can reduce the swing caused by the friction with the round hole in the process of entering and exiting the round hole, the positioning piece 3 can enter and exit the round hole 12 more easily, and the position of the cylinder 2 is prevented from being influenced.

As shown in fig. 3 and 5, in the present embodiment, the bottom of the groove 11 is provided with a boss 13, and the upper surface of the boss 13 abuts against the cylindrical body 2.

The upper surface of the boss 13 is contacted with the lower surface of the cylinder 2, so that the contact between the bottom surface of the groove 11 and the cylinder is reduced, and the friction force of the cylinder in position adjustment is reduced.

In this embodiment, the disc body 1 is provided with a central hole 14, and an axis of the central rod 3 coincides with a rotation axis of the workbench and coincides with an axis of the central hole 14.

The centering rod 3 is used for connecting the disc body 1 and the workbench, a circular hole is formed in the center of the workbench, and the centering rod 3 penetrates through the central hole 14 of the disc body to enter the circular hole of the workbench, so that the disc body 1 is coaxial with the workbench.

The embodiment also discloses a manufacturing method of the cylindrical rotation precision detection tool, which comprises the following steps:

s1: an annular groove is formed in the circular disc body;

s2: a cylinder is arranged in the groove;

s3: injecting a shaping material into the groove to immerse the lower part of the cylinder into the shaping material;

s4: the disk body is driven to rotate at a constant speed until the shaping material is shaped.

Specifically, the annular groove is concentric with the circular disc body; 72 cylinders are placed in the grooves, the 72 cylinders are nearly full, gaps are formed among the cylinders, the width of each gap is about 0.005mm, the 72 cylinders divide the circumference equally, the corresponding angle of each cylinder is 5 degrees, namely the corresponding angle of rotation of each cylinder at the same position is 5 degrees. The bottom of the groove is provided with an annular boss which is concentric with the annular groove, and the cylinder is arranged on the boss.

The setting material in this embodiment is the resin, and in the resin injection recess, the drive disk body rotated at the uniform velocity, under the effect of centrifugal force, cylinder evenly distributed, equidistant arrangement waits the resin solidification, can be with the fixed position of cylinder, keeps the same clearance.

In order to enable the round holes to face between the two cylinders, before the disc body rotates, the positioning piece is inserted into any round hole, the cylinders are roughly positioned, and then the disc body is rotated. The diameter of the positioning piece is smaller than that of the round hole, and the positioning piece leaves the round hole under the action of centrifugal force, so that the automatic positioning of the cylinder is not influenced.

The boss at the bottom of the groove reduces the contact area between the cylinder and the groove, reduces the friction force when the cylinder is automatically positioned, and enables the cylinder to be more easily adjusted in position.

The embodiment also discloses a method for detecting the rotation precision of the rotating shaft, which comprises the following steps:

s1: mounting a cylindrical rotation precision detection tool on a workbench; the centering rod 3 passes through the central hole 14 and the circular hole on the workbench, so that the disk body 1 is coaxial with the workbench.

S2: the workbench rotates by a set angle; the angle of rotation of the table is equal to an integer multiple of γ, γ =360 °/n, where n is the number of cylinders. The number of cylinders in this example is 72, γ =5 °.

S3: and detecting the rotation angle of the cylinder.

Specific methods for detecting the cylindrical rotation angle include, but are not limited to, microscopic observation and laser measurement.

The microscope observation and measurement method adopts a high power microscope, and in the embodiment, a microscope with a magnification of 1000 times is adopted, and the microscope is provided with scales.

Firstly, selecting any one cylinder, setting any point on the side surface of the selected cylinder as an initial detection point, and setting points corresponding to the positions of the initial detection points on the other cylinders as target detection points; in order to facilitate observation, a point on a straight line with the shortest distance between the cylinders is set as an initial detection point;

then, the microscope and the detection point are positioned at the same height and face the initial detection point; recording the corresponding scale of the initial detection point;

and finally, starting the servo motor, rotating by a specified angle, reading the offset of the target detection point through the scale on the microscope after the rotation is finished, and calculating the angle error through the offset.

Compared with a microscope observation measuring method, the laser measuring method is characterized in that a laser emitting device is adopted, laser penetrates through a round hole, the laser is adjusted to a position just shielded by an initial detection point, then a servo motor is started, after a set angle is rotated, the position just shielded by the detection point is detected again through the laser, the difference value of the two positions is the offset of the detection point, and the angle error is calculated through the offset.

The detection needs to be carried out for multiple times, data is recorded for multiple times, an angle error alpha is calculated through multiple times of detection, and a new angle compensation value +/-alpha is determined according to the obtained angle error and the angle corresponding to the rotation compensation file of the numerical control system.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a cylinder type gyration precision detection frock which characterized in that includes: a disc body (1) and a cylinder (2);

be equipped with recess (11) on disk body (1), recess (11) are the annular, and with disk body (1) is concentric, and a plurality of cylinder (2) are located in recess (11), the axis perpendicular to of cylinder (2) disk body (1), it equals to have clearance and clearance between cylinder (2), the axis and the gyration axis coincidence of disk body (1).

2. The cylindrical rotation precision detection tool according to claim 1, wherein a circular hole (12) is formed in the outer wall of the groove (11), and the circular hole (12) faces between the cylinders (2).

3. The cylindrical rotary precision detection tool according to claim 2, further comprising a positioning element (4) having a cone at an end thereof, wherein the positioning element (4) can extend into the circular hole (12), so that the cone of the cone is abutted against the side surface of the cylinder (2).

4. The cylindrical rotation precision detection tool according to claim 3, wherein the diameter of the positioning member (4) is smaller than the diameter of the circular hole (12).

5. The cylindrical rotation precision detection tool according to claim 1, wherein a boss (13) is arranged at the bottom of the groove (11), and the upper surface of the boss (13) is abutted to the cylinder (2).

6. The cylindrical rotation precision detection tool according to claim 1, further comprising a centering rod (3), wherein the disc body (1) is provided with a center hole (14), and an axis of the centering rod (3) coincides with a rotation axis of the workbench and coincides with an axis of the center hole (14).

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