CN211414572U - Chuck correcting mechanism and machine tool concentric correcting device - Google Patents

Abstract

The present application provides a chuck calibration mechanism and a machine tool concentric calibration device, comprising a support structure, a pair of chucks, a calibration bar and a pair of first measuring instruments; a pair of chucks are arranged on both sides of the support structure, and the chucks are centered at the center. The axis is set horizontally; a plurality of circumferentially distributed claws are arranged on the chuck, and the claws can move along the radial direction of the chuck; the calibration rod penetrates a pair of chucks and is clamped and fixed by the claws; a pair of first The measuring instruments are arranged at both ends of the calibration rod, and the first measuring instrument is used to measure the levelness of the calibration rod extending to the outside of the jaws. The beneficial effects of the present application are: adjusting the fixed position of the calibration bar on the chuck by adjusting the center spacing and position between the claws on the chuck; The difference between the values of the first measuring instruments corresponding to the two ends of the rod is within the range of the first set difference, thereby realizing the concentricity of a pair of chucks and their claws.

Description

A chuck correction mechanism and a machine tool concentric correction device

technical field

The present disclosure relates to the technical field of concentric correction of horizontal machine tools, in particular to a chuck correction mechanism and a machine tool concentric correction device.

Background technique

At present, there are not many devices and methods for machine tool chuck calibration, and the one that is still in use is adjustment through the double-chuck centering device. Double chuck centering device Adjusting the chuck through the rotating guide device makes the three jaws of the chuck gather and center inward. There are many variables in this calibration method, and there are several defects: 1. The rotating guide rail is deformed due to the high temperature working environment; 2. When adjusting, the thickness of one or several layers of asbestos pads on the three claws at the end is different, which requires frequent Open the jaws to increase or decrease the asbestos pads to achieve the purpose, and there will be a large error at the front end; 3. After the disassembly and assembly of the chuck rotating guide device is faulty, due to the different experience and methods of maintenance workers, it takes a lot of manpower to determine the concentric position. ; 4. The glass tube erected by operation may be out of round and cause defects such as offset. Combining these defects can easily lead to large errors and poor accuracy of the concentric chucks on both sides.

At present, there are not many devices and methods for concentric correction of machine tools, only the combination of nylon wire and box ruler. Tie the nylon wire to the glass tube clamped by the bearing, observe the height difference between the left and right axes with the naked eye, place the box ruler on the edge of the glass tube clamped by the bearing, and observe the bearing runout with the naked eye. There are many variables in this measurement method. , including the large out-of-roundness of the glass tube, the drop of the line between the two nodes of the nylon rope, etc., the measurement accuracy is poor, the maximum can reach 2mm, and most of the results are related to personal experience, the adjustment time is long, and the glass tube is broken Possibly, it wastes manpower, material and financial resources, and when the concentricity is poor, it is easy to cause the molten mass to have high stress and the possibility of bending. At present, the device and method for high-precision concentric correction of machine tools are very lacking.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a chuck calibration mechanism and a machine tool concentric calibration device in view of the above problems.

In a first aspect, the present application provides a chuck calibration mechanism, comprising a support structure, a pair of chucks, a calibration rod and a pair of first measuring instruments; a pair of the chucks are arranged on both sides of the support structure, so The chuck is arranged in a way that the central axis is horizontal; a plurality of circumferentially distributed claws are arranged on the chuck, and the claws can move along the radial direction of the chuck; the calibration rod penetrates a pair of all The chuck is clamped and fixed by the claws; a pair of the first measuring instruments are arranged at both ends of the calibration rod, and the first measuring instruments are used to measure the calibration rod extending to the outside of the claws. Great level. Adjust the fixed position of the calibration bar on the chuck by adjusting the center spacing between the claws on the chuck.

According to the technical solutions provided in the embodiments of the present application, the support structure includes a horizontally arranged base plate and a support plate arranged vertically to the base plate, a pair of the chucks are arranged on both sides of the support plate, and a middle part of the chucks A first through hole is provided, a second through hole is arranged on the support plate corresponding to the first through hole, and the calibration rod passes through the first through hole and the second through hole and is clamped and fixed to a pair of the card on the plate.

According to the technical solutions provided in the embodiments of the present application, the chuck defines a first groove corresponding to the claw along the radial direction, one side of the claw is clamped in the first groove, and the clamp The claw is provided with a threaded hole corresponding to the first groove, and a first bolt passing through the threaded hole fixes the clamping claw in the first groove.

According to the technical solution provided by the embodiment of the present application, a sleeve is fixed on the side of the jaw away from the first groove, the sleeve is provided with an internal thread, and the sleeve is provided with a connection with the sleeve. The second bolts that can move in the radial direction of the chuck are threadedly matched, and each of the second bolts that move in the radial direction of the chuck clamps and fixes one end of the calibration rod to each of the clamps of one of the chucks. between the claws.

In a second aspect, the present application provides a machine tool concentric correction device, which includes a plurality of chuck correction mechanisms, each of which is respectively provided on a machine tool head, and the machine tool head is movably fixed on a machine tool platform, so A slide rail is provided on the machine tool platform, and a slidable second measuring instrument is respectively set in the sliding rail corresponding to each of the chuck correction mechanisms, and the second measuring instrument is used to measure the calibration rod of the chuck correction mechanism. position on the machine platform.

Find the highest point of each calibration bar through the second measuring instrument, and adjust the height of one of the machine heads on the machine platform by comparing the distance between the highest point of the calibration bar and the second measuring instrument, so that the highest point of the calibration bar is far from the second measuring instrument. The vertical spacing is the same; then measure the horizontal spacing of each calibration rod from the second measurement instrument through the second measuring instrument, and adjust the horizontal position of the chuck correction mechanism on the machine head to make the calibration rod distance from the second measuring instrument. The horizontal spacing is consistent, so as to achieve the effect of the concentricity of the machine tool.

According to the technical solutions provided in the embodiments of the present application, a second groove is provided on the machine head corresponding to the chuck correction mechanism, the extension direction of the second groove is perpendicular to the slide rail, and the chuck correction mechanism passes through The screw fixed in the second groove is fixed on the machine head.

According to the technical solutions provided in the embodiments of the present application, the second measuring instrument includes a slider, a second support rod and a second dial indicator, the slider is slidably clamped in the slide rail, and the The second support rod is fixed on the slider, the second dial indicator is arranged at the end of the second support rod away from the sliding rail, and the measuring head of the second dial indicator is in contact with the corresponding the surface of the school stick.

According to the technical solutions provided in the embodiments of the present application, a drive motor is arranged between the machine tool head and the machine tool platform, and the drive motor drives the machine tool head to move up and down on the machine tool platform.

Beneficial effects of the present invention: The present application provides a chuck calibration mechanism, comprising a support structure, a pair of chucks, a calibration rod and a pair of first measuring instruments; a pair of the chucks are arranged on both sides of the support structure , the chuck is arranged in a way that the central axis is horizontal; the chuck is provided with a plurality of circumferentially distributed claws, the claws can move along the radial direction of the chuck; the calibration rod passes through a The chuck is clamped and fixed by the claws; a pair of the first measuring instruments are arranged at both ends of the calibration rod, and the first measuring instruments are used to measure all the parts extending to the outside of the claws. Describe the level of the school stick.

The fixed position of the calibration bar on the chuck is adjusted by adjusting the center spacing between the claws on the chuck, and the first measuring instrument corresponding to both ends of the calibration bar is adjusted by adjusting the center spacing of the claws corresponding to both ends of the calibration bar. The difference of the values is within the range of the first set difference, so as to realize the concentricity of a pair of chucks and their claws.

Description of drawings

1 is a schematic structural diagram of a first embodiment of the application;

Fig. 2 is the structural schematic diagram of the chuck in the first embodiment of the application;

3 is a schematic structural diagram of a second embodiment of the application;

4 is a schematic front view of the structure of the second measuring instrument in the second embodiment of the present application;

5 is a schematic side view of the structure of the second measuring instrument in the second embodiment of the present application;

Fig. 6 is the flow chart of the third implementation of the application;

FIG. 7 is a flowchart of step S40 in the third embodiment of the application;

The text in the figure is marked as: 110, base plate; 120, support plate; 200, chuck; 210, first through hole; 220, first groove; 300, calibration rod; 400, first measuring instrument; 500 , jaw; 510, the first bolt; 520, sleeve; 530, the second bolt; 600, machine head; 610, screw; 710, slide rail; 800, the second measuring instrument; 810, slider; Two poles; 830, the second dial indicator.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present application is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. .

FIG. 1 is a schematic diagram of the first embodiment of the application, including a support structure, a pair of chucks 200, a calibration rod 300 and a pair of first measuring instruments 400; a pair of the chucks 200 are arranged on the On both sides of the support structure, the chuck 200 is arranged with the central axis horizontal; the chuck 200 is provided with a plurality of circumferentially distributed claws 500, and the claws 500 can be arranged along the radial movement; the calibration bar 300 penetrates a pair of the chucks 200 and is clamped and fixed by the jaws 500 ; a pair of the first measuring instruments 400 are arranged at both ends of the calibration bar 300, the first A measuring instrument 400 is used to measure the levelness of the calibration bar 300 extending to the outside of the clamping jaw 500 . In this embodiment, each chuck 200 is provided with three claws 500 in the circumferential direction. In other embodiments, the number of the claws 500 provided on the chuck 200 may be other values greater than three.

The fixed position of the calibration bar 300 on the chuck 200 is adjusted by adjusting the center spacing between the claws 500 on the chuck 200 . The difference between the values of the first measuring instrument 400 corresponding to the two ends is within the first set difference range, so as to realize the concentricity of the pair of chucks 200 and their claws 500 .

In this embodiment, the calibration rod 300 is a cylinder made of a lathe, and after each use, brush oil to hang it vertically so that it will not deform, bend, oxidize or corrode, and the roundness is calibrated before use. The section diameter of the school rod 300 cylinder is 6cm, the length is 120cm, and the material is 304 stainless steel. It has been proved by experiments that the diameter and length are the most favorable for the calibration of the chuck 200: too large diameter results in large mass, which is not easy to operate and use; too small diameter is not conducive to subsequent adjustment of the position; too long the length will cause the risk of bending, which will make the result inaccurate; the length is decisive Simultaneous calibration of both ends cannot be performed.

In this embodiment, the first measuring instrument 400 includes a first support rod, the first support rod is vertically arranged on the base plate 110 , and an end of the first support rod away from the base plate 110 is provided with a first support rod. A dial indicator, the measuring head of the first dial indicator is in contact with the surface of the calibration rod 300 . Fixing the first poles at both ends of the calibration rod 300 on the base plate 110 can make the first pole have the same height reference, and then fix the first dial indicator on the same height position of the first pole, so that the first pole has the same height. The measuring head of the sub-meter abuts and contacts the surface of the calibration bar 300 vertically downward.

Preferably, the support structure includes a horizontally arranged base plate 110 and a support plate 120 arranged vertically to the base plate 110 , a pair of the chucks 200 are arranged on both sides of the support plate 120 , and a middle part of the chucks 200 is arranged There is a first through hole 210 , a second through hole is provided on the support plate 120 corresponding to the first through hole 210 , and the calibration rod 300 penetrates through the first through hole 210 and the second through hole and is clamped and fixed to a on the chuck 200. The school bar 300 is horizontally disposed between the pair of chucks 200 , and both ends of the school bar 300 extend outside the pair of chucks 200 and their claws 500 respectively.

Preferably, as shown in FIG. 2 , the chuck 200 defines a first groove 220 corresponding to the claws 500 in the radial direction, and one side of the claws 500 is clamped in the first groove 220 , the claws 500 are provided with threaded holes corresponding to the first grooves 220 , and the first bolts 510 passing through the threaded holes fix the claws 500 in the first grooves 220 . The jaw 500 can move in the first groove 220, and the jaw 500 is fixed at different positions in the first groove 220 by the first bolt 510 passing through the threaded hole, and then the jaw 500 is fixed on the chuck 200. different radial positions. Preferably, multiple layers of asbestos gaskets may be provided between the jaws 500 and the calibration rods 300. The asbestos gaskets can protect the calibration rods 300 on the one hand, and facilitate the adjustment of the clamping jaws 500 and the calibration rods 300 on the other hand. There is no need to adjust the position of the first bolt 510 in the first groove 220 frequently.

Preferably, a sleeve 520 is fixed on the side of the jaw 500 away from the first groove 220 , the sleeve 520 is provided with internal threads, and the sleeve 520 is provided with threads with the sleeve 520 In cooperation with the second bolts 530 that can move in the radial direction of the chuck 200 , each of the second bolts 530 moving in the radial direction of the chuck 200 clamps and fixes one end of the calibration bar 300 on one of the chucks 200 between each of the jaws 500. In the above preferred embodiment, in order to increase the clamping force of the jaw 500 on the calibration rod 300 and facilitate the jaw 500 to fine-tune the calibration rod 300, a sleeve 520 with an internal thread is provided on the side of the clamping jaw 500. The second bolt 530 threaded with the sleeve 520 firmly clamps the calibration bar 300 between the three claws 500 , and the end of the second bolt 530 abuts and contacts the circumferential surface of the calibration bar 300 .

In this embodiment, the school bar 300 penetrates between a pair of chucks 200 , and one end of the school bar 300 is fixed by three claws 500 on one chuck 200 . Similarly, the three claws on the other chuck 200 500 to fix the other end of the school stick 300. The positions and distances between the three claws 500 on the chuck 200 on one side are adjusted by the difference between the values of the first dial indicators on both sides of the calibration bar 300 to make the first percentile on both sides of the calibration bar 300 The difference between the numerical values in the table is within the range of the first set difference. At this time, the levelness of the two ends of the calibration bar 300 between the pair of chucks 200 indicates that the pair of chucks 200 and their claws 500 are concentric.

Preferably, the first set difference is 0.01 mm.

As shown in FIG. 3, this is the second embodiment of the application. In this embodiment, a plurality of mechanisms in the first embodiment are applied to the correction of the concentricity of the machine tool, and each of the chuck correction mechanisms is respectively provided on the machine head. 600, the machine tool head 600 is movably fixed on the machine tool platform, the machine tool platform is provided with slide rails 710 corresponding to a pair of the chuck correction mechanisms, and the slide rails 710 correspond to each of the chuck correction mechanisms A slidable second measuring instrument 800 is respectively provided, and the second measuring instrument 800 is used to measure the position of the calibration rod 300 of the chuck calibration mechanism on the machine tool platform.

Find the highest point of each calibration bar 300 by the second measuring instrument 800, and adjust the height of one of the machine tool heads 600 on the machine tool platform by comparing the distance between the highest point of the calibration bar 300 and the measuring head of the second measuring instrument 800, so that the calibration bar The vertical distance between the highest point of 300 and the measuring head of the second measuring instrument 800 is the same; then the second measuring instrument 800 is used to measure the horizontal distance between each calibration rod 300 and the measuring head of the second measuring instrument 800. The horizontal position on the machine tool head 600 makes the horizontal distance between the calibration rod 300 and the measuring head of the second measuring instrument 800 consistent, so as to achieve the effect of the concentricity of the machine tool.

As shown in FIG. 3 , two chuck correction mechanisms are applied to the machine tool platform. In other embodiments, a plurality of chuck correction mechanisms may also be set together for concentric correction of the machine tool.

In this embodiment, the machine tool platform is a platform of a horizontal plasma machine tool. In other embodiments, multiple chuck correction mechanisms may also be applied to other machine tool platforms.

Preferably, the machine tool head 600 is provided with a second groove corresponding to the chuck correction mechanism, and the extension direction of the second groove is perpendicular to the slide rail 710 , and the chuck correction mechanism is fixed on the first groove. The screws 610 in the two grooves are fixed on the machine head 600 . In this embodiment, the slide rail 710 is arranged horizontally on the machine tool platform, the second groove extends in the horizontal direction on the upper surface of the machine head 600 , and the extension direction of the second groove and the extension direction of the slide rail 710 are in the horizontal direction perpendicular to each other. The chuck correction mechanism can be fixed at different positions of the second groove by the screws 610 , that is, the chuck correction mechanism can move back and forth in the horizontal direction relative to the slide rail 710 . In this preferred embodiment, the base plate 110 and the machine head 600 in the chuck calibration mechanism are fixedly connected by hexagon screws 610 or bolts.

Preferably, as shown in FIG. 4 and FIG. 5 , the second measuring instrument 800 includes a slider 810 , a second support rod 820 and a second dial indicator 830 , and the slider 810 is slidably clamped on the In the slide rail 710, the second support rod 820 is fixed on the slider 810, the second dial indicator 830 is arranged at the end of the second support rod 820 away from the slide rail 710, the The measuring head of the second dial indicator 830 abuts and contacts the corresponding surface of the calibration rod 300 . In this preferred embodiment, the slider 810 can slide in the slide rail 710 to drive the second support rod 820 and the dial indicator disposed on the slider 810 to move to different positions relative to the calibration rod 300 . In this embodiment, the setting heights and angles of the two second measuring instruments 800 arranged on one side of the pair of chuck calibration mechanisms should be the same.

Preferably, a drive motor is provided between the machine tool head 600 and the machine tool platform, and the drive motor drives the machine tool head 600 to move up and down on the machine tool platform. In this preferred embodiment, the drive motor drives the machine tool head 600 to move up and down in the 45° direction.

As shown in Figure 6, the third embodiment of the present application includes the following steps:

S10, grinding and oiling the machine tool platform.

Use a pneumatic sander with 150-grit sandpaper attached to the grinding head to smooth the machine platform and oil it and set it aside.

S20. Perform concentric calibration on a pair of chucks in a chuck calibration mechanism.

By adjusting the position of each jaw 500 on a pair of chucks 200 in the radial direction of the chuck 200, the levelness of the two ends of the calibration rod 300 is adjusted, so that the difference between the values of the first measuring instruments 400 at both ends of the calibration rod 300 is less than or equal to the first setting Set the difference.

Each chuck calibration mechanism includes a support structure, a pair of chucks 200, calibration bars 300, and a pair of first measuring instruments 400; a pair of the chucks 200 are arranged on both sides of the support structure, and the chucks 200 The center axis is arranged in a horizontal manner; the chuck 200 is provided with a plurality of circumferentially distributed claws 500, and the claws 500 can move along the radial direction of the chuck 200; the calibration rod 300 penetrates a The chuck 200 is clamped and fixed by the claws 500; a pair of the first measuring instruments 400 are arranged at both ends of the calibration rod 300, and the first measuring instruments 400 are used to measure extending to the The levelness of the calibration bar 300 outside the jaws 500 .

The fixed position of the calibration bar 300 on the chuck 200 is adjusted by adjusting the center spacing between the jaws 500 on the chuck 200 . The difference between the values of the first measuring instrument 400 corresponding to the two ends is within the first set difference range, so as to realize the concentricity of the pair of chucks 200 and their claws 500 . The difference between the values of the first measuring instrument 400 at both ends of the calibration rod 300 is within the first set difference range, that is, the levelness of both ends of the calibration rod 300 meets the requirements, and the levelness of both ends of the calibration rod 300 meets the requirements, that is, the clamping calibration. The claws 500 on the chuck 200 at both ends of the rod 300 are concentric, so as to achieve the purpose of correcting the concentricity of the correction mechanism of the chuck.

In this step, the position of the jaw 500 on the chuck 200 is roughly adjusted by adjusting the position of the first bolt 510 in the first groove 220 , and then the position of the three jaws 500 on one chuck 200 is adjusted. The second bolt 530 is adjusted to adjust the position of the calibration bar 300 between the three claws 500, so as to meet the requirements of the levelness of both ends of the calibration bar 300. Generally, the second bolt 300 can be adjusted repeatedly 3-4 times to achieve two first The difference between the first dial indicators of the gauge 400 is within 0.01 mm.

S30 , the multiple chuck correction mechanisms that have been concentrically corrected for the chucks are respectively fixed on the machine tool platform through the machine tool head.

The calibrated two chuck calibration mechanisms are respectively fixed on the machine tool platform through the machine tool head 600 .

The two chuck correction mechanisms that complete the self-concentricity correction are respectively fixed on the machine tool head 600 in an adjustable manner, and the machine tool head 600 is fixed on the machine tool platform.

A drive motor is installed between the machine tool head 600 and the machine tool platform, and the drive motor drives the machine tool head 600 to move up and down on the machine tool platform. In this step, the drive motor drives the machine tool head 600 to move up and down on the machine tool platform with a 45° inclination angle obliquely upward or downward.

The machine head 600 is provided with a second groove, and the base plate 110 in the chuck calibration mechanism is fixed on the machine head 600 by hexagonal screws 610 or bolts fixed in the second groove. In this embodiment, the slide rail 710 is arranged horizontally on the machine tool platform, the second groove extends in the horizontal direction on the upper surface of the machine head 600 , and the extension direction of the second groove and the extension direction of the slide rail 710 are in the horizontal direction perpendicular to each other. The base plate 110 of the chuck correction mechanism is fixed at different positions of the second groove, so that the chuck correction mechanism can move back and forth in the horizontal direction relative to the slide rail 710 .

S40 , perform concentric correction on two adjacent chuck correction mechanisms on the machine tool platform in turn, until each chuck correction mechanism is concentric on the machine tool platform.

As shown in Figure 7, this step specifically includes:

S41. Set the measuring rods of the second measuring instruments corresponding respectively to the adjacent chuck calibration mechanisms vertically downward, and set the measuring rods of the two second measuring instruments at the same height.

In this embodiment, the slider 810 can slide in the slide rail 710 to drive the second support rod 820 and the dial indicator disposed on the slider 810 to move to different positions relative to the calibration bar 300 . In this embodiment, the setting heights and angles of the pair of second measuring instruments 800 should be set to be the same. The second support rod 820 is an adjustable structure, and the height and bending angle of the second support rod 820 can be adjusted. The second dial indicator 830 is fixed on the adjustable end of the second support rod 820 .

In this step, since the second measuring instrument 800 includes the second dial indicator 830, the measuring rod referred to in this step is the measuring rod of the second dial indicator 830, and the end of the measuring rod is the measurement that is in contact with the object to be measured. head. In this step, the vertical heights of the measuring heads of the two second dial indicators 830 are set to be the same.

S42, respectively adjust the position of the second measuring instrument on the slide rail to find the position when the indicated value of the second measuring instrument is the largest.

This step is the process of finding the highest point of the calibration rod 300 of the chuck calibration mechanism by the second measuring instrument 800 . Find the highest point of the adjacent chuck calibration mechanism calibration rods 300 respectively, and calculate the height of one of the chuck calibration mechanisms on the machine tool platform according to the difference between the values of the second dial indicators 830 of the two second measuring instruments 800 . Adjustment.

The operation process of this step is as follows: keep one end of the slider 810 fixed on the slide rail 710, and the other end of the slider 810 rotates horizontally with the fixed end as the center of the circle. During this process, the measuring head of the second dial indicator 830 is always Abutting and contacting the circumferential surface of the calibration bar 300 vertically downward, when the slider 810 rotates to the maximum value of the second dial indicator 830, the second dial indicator 830 is the position of the calibration bar 300. the highest point position. Similarly, find the highest point of the school rod 300 of another chuck calibration mechanism. Compare the values indicated at the highest points of the calibration bars 300 found by the two second dial gauges 830 respectively. If there is a difference between the two, it means that the two calibration bars 300 are not at the same height of the machine tool platform.

S43. Adjust the position of the machine tool head corresponding to any one of the adjacent chuck correction mechanisms on the machine tool platform, so that the indicated values of the two second measuring instruments are consistent.

Adjust the height of the machine head 600 where one of the chuck correction mechanisms is located on the machine platform, and the drive motor corresponding to the machine head 600 where the chuck correction mechanism with the lower vertical height is located drives the machine head 600 to move upward along a 45° incline, Observe the values of the two second measuring instruments 800 until the values of the two second dial indicators 830 are consistent, and the drive motor stops working. In other embodiments, the drive motor corresponding to the machine head 600 where the chuck calibration mechanism with a higher vertical height is located can also be used to drive the machine head 600 to move downward along a 45° inclination, and observe the values of the two second measuring instruments 800 , until the values of the two second dial indicators 830 are consistent, the drive motor stops working.

S44, setting the measuring rods of the second measuring instruments corresponding to the adjacent chuck calibration mechanisms respectively horizontally, and setting the measuring rods of the two second measuring instruments at the same height.

After the completion of step S43, the vertical heights of the adjacent chuck correction mechanisms on the machine platform are adjusted to be consistent, and then in S44, preparations are started to adjust the horizontal positions of the adjacent chuck correction mechanisms on the machine tool platform.

In this step, the two sliders 810 are clamped in the horizontal slide rail 710 of the machine tool platform, and the measuring rod of the second dial indicator 830 in the second measuring instrument 800 is set horizontally, that is, the measuring head at the end of the measuring rod The horizontal abutment contacts the circumferential surface of the school bar 300 . The measuring rods of the two second dial indicators 830 are set at the same vertical height relative to the machine tool platform, and the distances extended relative to the horizontal slide rail 710 are the same.

S45. Adjust the horizontal position of any one of the adjacent chuck correction mechanisms on the corresponding machine tool head, so that the indicated values of the two second measuring instruments are consistent.

When the vertical heights of the two chuck calibration mechanisms are adjusted to be the same on the machine platform, the measuring heads of the two second dial indicators 830 with the same height and the same horizontal extension distance should be away from a pair of calibration rods of the chuck calibration mechanism. 300 surface distances are the same, so when the measurement head horizontally abuts and contacts the two second dial indicators 830 on the surface of the calibration bar 300, the values are inconsistent, which means that the distance between the two calibration bars 300 corresponds to the corresponding second dial indicator 830. The horizontal distances are inconsistent, so it is necessary to adjust the horizontal position of the base plate 110 in one of the chuck calibration mechanisms on the machine head 600 until the values of the two second dial indicators 830 are consistent.

S46, repeating the above steps to respectively perform correction operations on the adjacent chuck correction mechanisms on the machine tool platform.

Specific examples are used herein to illustrate the principles and implementations of the present application, and the descriptions of the above examples are only used to help understand the methods and core ideas of the present application. The above are only the preferred embodiments of the present application. It should be pointed out that, due to the limited expression of words, there are objectively unlimited specific structures. For those of ordinary skill in the art, without departing from the principles of the present application However, several improvements, modifications or changes can also be made, and the above-mentioned technical features can also be combined in an appropriate manner; these improvements, modifications, or combinations, or the ideas and technical solutions of the application are directly applied to other occasions without improvement. shall be regarded as the protection scope of this application.

Claims (8)

1. A chuck calibration mechanism comprising a support structure, a pair of chucks (200), a calibration rod (300), and a pair of first gauges (400); a pair of said chucks (200) are disposed on both sides of said support structure, said chucks (200) being disposed with the central axis horizontal; a plurality of clamping jaws (500) distributed circumferentially are arranged on the chuck (200), and the clamping jaws (500) can move along the radial direction of the chuck (200); the correcting rod (300) penetrates through the pair of chucks (200) and is clamped and fixed through the clamping jaws (500); a pair of the first measuring instruments (400) are arranged at two ends of the school rod (300), and the first measuring instruments (400) are used for measuring the levelness of the school rod (300) extending to the outer side of the clamping jaws (500).

2. The chuck calibration mechanism according to claim 1, wherein the support structure comprises a base plate (110) horizontally disposed and a support plate (120) vertically disposed on the base plate (110), a pair of the chucks (200) are disposed on two sides of the support plate (120), a first through hole (210) is disposed in the middle of the chuck (200), a second through hole is disposed on the support plate (120) corresponding to the first through hole (210), and the calibration rod (300) penetrates through the first through hole (210) and the second through hole and is clamped and fixed on the pair of chucks (200).

3. The chuck calibration mechanism according to claim 2, wherein the chuck (200) is provided with a first groove (220) corresponding to the jaw (500) along a radial direction, one side of the jaw (500) is clamped in the first groove (220), the jaw (500) is provided with a threaded hole corresponding to the first groove (220), and a first bolt (510) penetrating through the threaded hole fixes the jaw (500) in the first groove (220).

4. The chuck calibration mechanism according to claim 3, wherein a sleeve (520) is fixed to a side of the jaws (500) away from the first recess (220), the sleeve (520) is provided with an internal thread, a second bolt (530) which is engaged with the sleeve (520) in a threaded manner and is movable in a radial direction of the chuck (200) is provided on the sleeve (520), and each second bolt (530) which is movable in the radial direction of the chuck (200) clamps and fixes one end of the calibration rod (300) between the jaws (500) of one of the chucks (200).

5. A machine tool concentricity calibration arrangement, comprising a plurality of chuck calibration mechanisms according to any one of claims 1 to 4, each of the chuck calibration mechanisms being arranged on a machine tool head (600), the machine tool head (600) being movably secured to a machine tool platform, the machine tool platform being provided with a slide rail (710), a second slidable gauge (800) being arranged in the slide rail (710) for each of the chuck calibration mechanisms, the second gauge (800) being adapted to measure the position of a calibration rod (300) of the chuck calibration mechanism on the machine tool platform.

6. The machine tool concentricity calibration device according to claim 5, wherein a second groove is provided on the machine tool head (600) corresponding to the chuck calibration mechanism, the second groove extends in a direction perpendicular to the slide rail (710), and the chuck calibration mechanism is fixed on the machine tool head (600) by a screw (610) fixed in the second groove.

7. The machine tool concentricity correction device according to claim 5, wherein the second measuring instrument (800) comprises a slider (810), a second support rod (820) and a second dial indicator (830), the slider (810) is slidably clamped in the slide rail (710), the second support rod (820) is fixed on the slider (810), the second dial indicator (830) is arranged at one end of the second support rod (820) far away from the slide rail (710), and a measuring head of the second dial indicator (830) is in abutting contact with the surface of the corresponding calibration rod (300).

8. The machine tool concentricity correction device according to claim 5, wherein a drive motor is provided between the machine tool head (600) and the machine tool platform, and the drive motor drives the machine tool head (600) to move up and down on the machine tool platform.

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