A device for measuring the diagonal position accuracy of a safe CNC machine tool

Abstract

The present invention provides a device for measuring the diagonal position accuracy of a safe CNC machine tool, and relates to the technical field of CNC machine tools. The device for measuring the diagonal position accuracy of a safe CNC machine tool comprises a fixed plate installed on the top of the machine tool bed, a fixed adjustment mechanism is arranged between the fixed plate and the machine tool bed, a support plate is arranged on the top of the fixed plate, and an elastic reset mechanism corresponding to the support plate is installed on the top of the fixed plate; a support mechanism corresponding to the support plate is arranged at the center of the top of the fixed plate, a detection spherical surface is fixedly connected to the center of the top of the positioning plate, and a measuring mechanism is arranged on the outer surface of the positioning plate and the detection spherical surface. By designing the measuring mechanism and the elastic reset mechanism, the measuring device can measure the position accuracy of the diagonal operation of the machine tool spindle, and the elastic structure design is adopted, so that the measuring device or the spindle will not be damaged due to the contact of the spindle, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tools, in particular to a device for measuring the diagonal position accuracy of a safe numerical control machine tool. Background Art

[0002] CNC machine tools are the abbreviation of Computer numerical control machine tools. They are an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and express them in coded numbers. They are input into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the action of the machine tool and automatically process parts according to the shape and size required by the drawings. CNC machine tools have better solved the problems of complex, precise, small batch and multi-variety parts processing. They are flexible and high-efficiency automated machine tools, representing the development direction of modern machine tool control technology and a typical mechatronics product. Processing parts on CNC machine tools mainly depends on the processing program. Unlike ordinary machine tools, they do not need to manufacture and replace many molds and fixtures, and do not need to readjust the machine tools frequently. Therefore, CNC machine tools are suitable for occasions where the processed parts are frequently replaced, that is, they are suitable for the production of single-piece and small-batch products and the development of new products, thereby shortening the production preparation cycle and saving a lot of process equipment costs.

[0003] When machine tool manufacturers install machine tool hardware (such as machine tool spindles), they usually measure the diagonal running position accuracy of the installed spindle to avoid large errors in subsequent use. However, the existing measuring device structure design is too simple, and the operating process is relatively complicated during the actual measurement process. Repeated measurements are required, which is very inconvenient to use. For this reason, we have developed a new safe CNC machine tool diagonal position accuracy measurement device. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a safe device for measuring the diagonal position accuracy of CNC machine tools, which solves the problem that when machine tool manufacturers install machine tool hardware (such as a machine tool spindle), they usually measure the diagonal running position accuracy of the installed spindle to avoid large errors in subsequent use. However, the structural design of the existing measuring device is too simple, and the operating process is relatively complicated during the actual measurement process, and repeated measurements are required, which is very inconvenient to use.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A device for measuring the diagonal position accuracy of a safe CNC machine tool, comprising a fixed plate installed on the top of the machine tool bed, a fixed adjustment mechanism is provided between the fixed plate and the machine tool bed, a supporting plate is provided on the top of the fixed plate, and an elastic reset mechanism corresponding to the supporting plate is installed on the top of the fixed plate;

[0008] A supporting mechanism corresponding to the supporting plate is arranged at the center of the top of the fixing plate, a positioning plate is fixedly connected to the top of the supporting plate, a detecting spherical surface is fixedly connected to the center of the top of the positioning plate, and a measuring mechanism is arranged on the outer surfaces of the positioning plate and the detecting spherical surface.

[0009] Preferably, the fixed adjustment mechanism includes a first adjustment hole and a second adjustment hole, and the first adjustment hole and the second adjustment hole are respectively opened in the centers of the front and rear ends of the top of the fixing plate, and the first adjustment bolt and the second adjustment bolt corresponding to the machine tool bed are respectively installed on both sides of the centers of the first adjustment hole and the second adjustment hole, and the tops of the outer walls of the two first adjustment bolts and the two second adjustment bolts are screwed with fixing nuts corresponding to the fixing plate.

[0010] Preferably, the first adjustment hole and the second adjustment hole are both arranged in a rectangular structure, and the top ends of the two first adjustment bolts and the two second adjustment bolts respectively pass through the first adjustment hole and the second adjustment hole and extend toward the top of the fixing plate.

[0011] Preferably, a plurality of positioning slots corresponding to the first adjusting bolts and the second adjusting bolts are provided on the top of the machine tool bed.

[0012] Preferably, the elastic reset mechanism includes a plurality of positioning columns, the corners of the top of the fixed plate are fixedly connected with positioning columns corresponding to the supporting plate, the outer walls of the plurality of positioning columns are sleeved with reset springs, and the tops of the outer walls of the plurality of positioning columns are fixedly connected with limiting rings corresponding to the supporting plate.

[0013] Preferably, the bottoms of the outer walls of the plurality of positioning posts are all provided with external threads, and the top of the fixing plate is provided with a plurality of threaded holes corresponding to the positioning posts.

[0014] Preferably, the support mechanism comprises a support plate, the center of the top of the fixed plate is fixedly connected to the support plate, and the top of the support plate is fixedly connected to a sponge support block.

[0015] Preferably, the positioning plate and the detection spherical surface are cast as an integrally formed structure, and fixing screws corresponding to the supporting plate are installed at the corners of the top of the positioning plate.

[0016] Preferably, the measuring mechanism includes a first diagonal and a second diagonal, the outer surfaces of the positioning plate and the detection sphere are respectively provided with the first diagonal and the second diagonal, diagonal base points are provided at the corners of the positioning plate, and diagonal intersection points are provided at the intersections of the first diagonal and the second diagonal.

[0017] Working principle: When using this kind of measuring device for the diagonal position accuracy of a safe CNC machine tool, a T-shaped first adjusting bolt 203 and a second adjusting bolt 204 are designed, and a plurality of positioning grooves 3 corresponding to the first adjusting bolt 203 and the second adjusting bolt 204 are opened on the top of the machine tool bed 11, and then a plurality of fixing nuts 205 are used to lock and fix the first adjusting bolt 203 and the second adjusting bolt 204. A supporting plate 4 is arranged on the top of the fixing plate 1, and an elastic reset mechanism 5 corresponding to the supporting plate 4 is installed on the top of the fixing plate 1. By sleeved the supporting plate 4 on the outer walls of a plurality of positioning columns 501, and sleeved the reset springs 502 on the outer walls of a plurality of positioning columns 501, the supporting plate 4 can automatically move up and down when squeezed by the spindle, and the measuring device or the spindle will not be damaged due to the contact with the spindle. The positioning plate 8 and the detection spherical surface 9 cast in an integral structure not only have a smoother overall surface, Moreover, the structure is firm, and a measuring mechanism 10 is arranged on the outer surfaces of the positioning plate 8 and the detection spherical surface 9. By respectively arranging a first diagonal 1001 and a second diagonal 1002 on the outer surfaces of the positioning plate 8 and the detection spherical surface 9, and by arranging diagonal base points 1003 at the corners of the positioning plate 8, the operator can control the machine tool spindle to take the diagonal base points 1003 of two different diagonals as starting points, and edit the running program to make the machine tool spindle move along the first diagonal 1001 and the second diagonal 1002 respectively, and by installing a fine paintbrush at the bottom of the machine tool spindle, the machine tool spindle can leave running tracks on the first diagonal 1001 and the second diagonal 1002 when moving along the first diagonal 1001 and the second diagonal 1002, and finally by observing the deviation of the two running tracks from the first diagonal 1001 and the second diagonal 1002, it can be judged whether the diagonal operation of the machine tool spindle is accurate.

[0018] (III) Beneficial effects

[0019] The present invention provides a device for measuring the diagonal position accuracy of a safe CNC machine tool, which has the following beneficial effects:

[0020] 1. This kind of safety CNC machine tool diagonal position accuracy measuring device can be quickly installed and fixed by designing a simple quick installation and fixing structure, and can be freely adjusted according to the changes of the machine tool bed by designing a fixed adjustment mechanism.

[0021] 2. This type of safe CNC machine tool diagonal position accuracy measuring device can measure the position accuracy of the diagonal operation of the machine tool spindle by designing a measuring mechanism and an elastic reset mechanism. In addition, the elastic structure design will not cause damage to the measuring device or the spindle due to contact with the spindle, thereby greatly improving its work efficiency and worthy of vigorous promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the main structural diagram of the present invention;

[0023] Figure 2 It is a top view of the structure of the fixing plate of the present invention;

[0024] Figure 3 This is a top view of the supporting plate of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the support mechanism of the present invention;

[0026] Figure 5 Based Figure 1 A partial enlarged view of the middle A;

[0027] Figure 6 Based Figure 3 A partial enlarged view of point B in the middle.

[0028] Among them, 1. fixed plate; 2. fixed adjustment mechanism; 201. first adjustment hole; 202. second adjustment hole; 203. first adjustment bolt; 204. second adjustment bolt; 205. fixing nut; 3. positioning slide groove; 4. supporting plate; 5. elastic reset mechanism; 501. positioning column; 502. reset spring; 503. limit ring; 6. supporting mechanism; 601. supporting plate; 602. sponge support block; 7. threaded hole; 8. positioning plate; 9. detection sphere; 10. measuring mechanism; 1001. first diagonal line; 1002. second diagonal line; 1003. diagonal line base point; 1004. diagonal line intersection point; 11. machine tool bed. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] like Figure 1-6As shown, an embodiment of the present invention provides a device for measuring the diagonal position accuracy of a safe CNC machine tool, comprising a fixed plate 1 installed on the top of a machine tool bed 11, a fixed adjustment mechanism 2 is arranged between the fixed plate 1 and the machine tool bed 11, a supporting plate 4 is arranged on the top of the fixed plate 1, and an elastic reset mechanism 5 corresponding to the supporting plate 4 is installed on the top of the fixed plate 1;

[0032] A supporting mechanism 6 corresponding to the supporting plate 4 is arranged at the center of the top of the fixing plate 1, a positioning plate 8 is fixedly connected to the top of the supporting plate 4, a detecting spherical surface 9 is fixedly connected to the center of the top of the positioning plate 8, and a measuring mechanism 10 is arranged on the outer surfaces of the positioning plate 8 and the detecting spherical surface 9.

[0033] The fixed adjustment mechanism 2 includes a first adjustment hole 201 and a second adjustment hole 202. The centers of the front and rear ends of the top of the fixed plate 1 are respectively provided with the first adjustment hole 201 and the second adjustment hole 202. The first adjustment bolt 203 and the second adjustment bolt 204 corresponding to the machine tool bed 11 are respectively installed on both sides of the center of the first adjustment hole 201 and the second adjustment hole 202. The tops of the outer walls of the two first adjustment bolts 203 and the two second adjustment bolts 204 are screwed with fixing nuts 205 corresponding to the fixed plate 1. The fixed adjustment mechanism 2 is mainly used for locking and fixing the fixed plate 1. By designing the T-shaped first adjusting bolt 203 and the second adjusting bolt 204, and cooperating with the multiple positioning grooves 3 corresponding to the first adjusting bolt 203 and the second adjusting bolt 204 opened on the top of the machine tool bed 11, and then using multiple fixing nuts 205 to lock and fix the first adjusting bolt 203 and the second adjusting bolt 204, the locking and fixing of the fixed plate 1 can be quickly completed, and it is also convenient for disassembly after the measurement is completed.

[0034] The first adjustment hole 201 and the second adjustment hole 202 are both arranged in a rectangular structure, and the top ends of the two first adjustment bolts 203 and the two second adjustment bolts 204 respectively penetrate the first adjustment hole 201 and the second adjustment hole 202, and extend to the top of the fixed plate 1. The first adjustment hole 201 and the second adjustment hole 202 are arranged in a rectangular structure, so that the two first adjustment bolts 203 and the two second adjustment bolts 204 can slide freely therein respectively. Different types of machine tools have different positions of the positioning grooves 3 opened on the top of the machine tool bed 11. Through the sliding design, the measuring device can be suitable for different types of machine tools.

[0035] A plurality of positioning slots 3 corresponding to the first adjusting bolt 203 and the second adjusting bolt 204 are provided on the top of the machine tool bed 11 . The positioning slots 3 can limit the bottom ends of the first adjusting bolt 203 and the second adjusting bolt 204 .

[0036] The elastic reset mechanism 5 includes a plurality of positioning columns 501, and the corners at the top of the fixed plate 1 are fixedly connected with positioning columns 501 corresponding to the supporting plate 4, the outer walls of the plurality of positioning columns 501 are sleeved with reset springs 502, and the tops of the outer walls of the plurality of positioning columns 501 are fixedly connected with limit rings 503 corresponding to the supporting plate 4. By sleeveing ​​the supporting plate 4 on the outer walls of the plurality of positioning columns 501 and sleeved with reset springs 502 on the outer walls of the plurality of positioning columns 501, the supporting plate 4 can automatically move up and down when squeezed by the main shaft, and the measuring device or the main shaft will not be damaged due to the contact with the main shaft.

[0037] The bottom of the outer wall of the multiple positioning columns 501 is provided with external threads, and the top of the fixing plate 1 is provided with multiple threaded holes 7 corresponding to the positioning columns 501. By threading the multiple positioning columns 501 with the threaded holes 7, it is convenient for quick installation and fixation, and also easy to disassemble.

[0038] The supporting mechanism 6 includes a supporting plate 601, the center of the top of the fixing plate 1 is fixedly connected with the supporting plate 601, the top of the supporting plate 601 is fixedly connected with a sponge supporting block 602, and the supporting plate 601 and the sponge supporting block 602 can cooperate with the elastic reset mechanism 5 to provide stable support for the supporting plate 4.

[0039] The positioning plate 8 and the detection spherical surface 9 are cast as an integral structure, and fixing screws corresponding to the supporting plate 4 are installed at the corners of the top of the positioning plate 8. The positioning plate 8 and the detection spherical surface 9 are cast as an integral structure, and not only the overall surface is smoother, but also the structure is firm, and they are fixed and connected by multiple fixing screws to facilitate disassembly and installation.

[0040] The measuring mechanism 10 includes a first diagonal line 1001 and a second diagonal line 1002. The outer surfaces of the positioning plate 8 and the detection spherical surface 9 are respectively provided with the first diagonal line 1001 and the second diagonal line 1002. The corners of the positioning plate 8 are provided with diagonal base points 1003. The intersections of the first diagonal line 1001 and the second diagonal line 1002 are provided with diagonal intersection points 1004. By providing the first diagonal line 1001 and the second diagonal line 1002 on the outer surfaces of the positioning plate 8 and the detection spherical surface 9, respectively, and providing the diagonal base points 1003 at the corners of the positioning plate 8, the operator can control the machine. The machine tool spindle takes the diagonal base points 1003 of two different diagonals as starting points, and the running program is edited so that the machine tool spindle moves along the first diagonal 1001 and the second diagonal 1002 respectively. By installing a thin paintbrush at the bottom of the machine tool spindle, the machine tool spindle can leave running tracks on the first diagonal 1001 and the second diagonal 1002 when moving along the first diagonal 1001 and the second diagonal 1002. Finally, by observing the deviation of the two running tracks from the first diagonal 1001 and the second diagonal 1002, it is judged whether the diagonal operation of the computer machine tool spindle is accurate.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the diagonal position accuracy of a safe CNC machine tool, comprising a fixing plate (1) mounted on the top of a machine tool bed (11), characterized in that: A fixing adjustment mechanism (2) is provided between the fixing plate (1) and the machine tool bed (11); a supporting plate (4) is provided on the top of the fixing plate (1); and an elastic reset mechanism (5) corresponding to the supporting plate (4) is installed on the top of the fixing plate (1); A support mechanism (6) corresponding to the support plate (4) is arranged at the center of the top of the fixed plate (1); a positioning plate (8) is fixedly connected to the top of the support plate (4); a detection spherical surface (9) is fixedly connected to the center of the top of the positioning plate (8); and a measuring mechanism (10) is arranged on the outer surfaces of the positioning plate (8) and the detection spherical surface (9); The fixing adjustment mechanism (2) comprises a first adjustment hole (201) and a second adjustment hole (202); the first adjustment hole (201) and the second adjustment hole (202) are respectively opened at the center of the front and rear ends of the top of the fixing plate (1); the first adjustment bolt (203) and the second adjustment bolt (204) corresponding to the machine tool bed (11) are respectively installed on both sides of the center of the first adjustment hole (201) and the second adjustment hole (202); the tops of the outer walls of the two first adjustment bolts (203) and the two second adjustment bolts (204) are screwed with fixing nuts (205) corresponding to the fixing plate (1); The first adjustment hole (201) and the second adjustment hole (202) are both arranged in a rectangular structure, and the top ends of the two first adjustment bolts (203) and the two second adjustment bolts (204) respectively penetrate the first adjustment hole (201) and the second adjustment hole (202) and extend toward the top of the fixing plate (1); A plurality of positioning slots (3) corresponding to the first adjusting bolts (203) and the second adjusting bolts (204) are provided on the top of the machine tool bed (11); The measuring mechanism (10) comprises a first diagonal line (1001) and a second diagonal line (1002); the outer surfaces of the positioning plate (8) and the detection spherical surface (9) are respectively provided with the first diagonal line (1001) and the second diagonal line (1002); diagonal base points (1003) are provided at the corners of the positioning plate (8); and a diagonal intersection point (1004) is provided at the intersection of the first diagonal line (1001) and the second diagonal line (1002).

2. The device for measuring the diagonal position accuracy of a safety CNC machine tool according to claim 1, characterized in that: The elastic reset mechanism (5) comprises a plurality of positioning columns (501), the corners of the top of the fixed plate (1) are fixedly connected with positioning columns (501) corresponding to the supporting plate (4), the outer walls of the plurality of positioning columns (501) are sleeved with reset springs (502), and the tops of the outer walls of the plurality of positioning columns (501) are fixedly connected with limiting rings (503) corresponding to the supporting plate (4).

3. The device for measuring the diagonal position accuracy of a safety CNC machine tool according to claim 2, characterized in that: The bottoms of the outer walls of the plurality of positioning posts (501) are all provided with external threads, and the top of the fixing plate (1) is provided with a plurality of threaded holes (7) corresponding to the positioning posts (501).

4. The device for measuring the diagonal position accuracy of a safety CNC machine tool according to claim 1, characterized in that: The support mechanism (6) comprises a support plate (601), the center of the top of the fixed plate (1) is fixedly connected to the support plate (601), and the top of the support plate (601) is fixedly connected to a sponge support block (602).

5. The device for measuring the diagonal position accuracy of a safety type CNC machine tool according to claim 1, characterized in that: The positioning plate (8) and the detection spherical surface (9) are cast as an integrally formed structure, and fixing screws corresponding to the supporting plate (4) are installed at the corners of the top of the positioning plate (8).

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