CN211012825U

CN211012825U - Non-contact type main shaft dynamic displacement detection device

Info

Publication number: CN211012825U
Application number: CN201922141751.6U
Authority: CN
Inventors: 邢威
Original assignee: Dongguan Baoke Precision Machinery Co ltd
Current assignee: Dongguan Baoke Precision Machinery Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-14
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a non-contact type main shaft dynamic displacement detection device, which comprises a drilling machine main body, wherein a cutter handle part formed at the top of a reference test bar is fixed at the bottom of a main shaft of a main machine head of the drilling machine main body; the drilling machine comprises a drilling machine body and is characterized in that a connecting block is fixed on the top surface of a fixing platform of the drilling machine body, a horizontal connecting plate is fixed on the top surface of the connecting block, a transverse moving mechanism is fixed on the top surface of the horizontal connecting plate, and an upper horizontal connecting plate is fixed on the top surface of a transverse moving block of the transverse moving mechanism. The method can detect the actual displacement of the axis under the rotation condition of the main shaft of the main machine head, namely a dynamic numerical value, thereby accurately capturing the displacement of each time node of the axis of the main shaft, summarizing a change rule, establishing a database and establishing a temperature compensation function model or summarizing a targeted processing technology.

Description

Non-contact type main shaft dynamic displacement detection device

The technical field is as follows:

the utility model relates to an electron five metals manufacturing technical field, more specifically say and relate to a non-contact main shaft dynamic displacement detection device.

Background art:

in a machine tool such as a drilling machine, due to environmental temperature changes or heat generation of a spindle and a motor when the spindle rotates, thermal elongation and thermal deformation of a column, a screw rod, the spindle and a spindle head are involved, and finally, a tool tip coordinate is unstable, so that the machining precision of the machine tool is affected. Therefore, the detection of the thermal elongation rule in the aspect is particularly important, the problem can be solved only by finding the rule, and the problem is avoided in the aspects of thermal compensation and process, so that the machining quality of the machine tool is improved.

The traditional spindle axis displacement is detected by a contact probe type dial indicator, and is only suitable for static spindle displacement detection.

If dynamic (after spindle rotation) displacement data is to be detected, the probe of the rotary dial gauge cannot contact the rotating part to avoid damage. Therefore, the main shaft stops after the main shaft rotates for a certain time before the main shaft rotates, the main shaft counts by counting (value 2), the difference value between the value 2 and the value 1 is the coordinate variation of the axis, and only the final error value cannot reflect the coordinate variation rule.

Meanwhile, the existing eddy current sensor can be fixed at one position and detected in a non-contact mode, but the existing eddy current sensor is not applied to a drilling machine spindle, and the fixed position of the existing eddy current sensor cannot be adjusted generally.

The utility model has the following contents:

the utility model aims at overcoming the not enough of prior art, the utility model provides a non-contact main shaft dynamic displacement detection device, its eddy current sensor can control and accurate fine setting around with, it adjusts stably, and is effectual, can be so that eddy current sensor's induction end is close to the bottom surface the central axis department of benchmark test stick, thereby the actual displacement volume in axle center under the main shaft rotation situation that can the accurate main engine head that detects, dynamic numerical value promptly, thereby can accurately catch the displacement volume of each time node in main shaft axle center, summarize out the change law, establish the database and establish temperature compensation function model with this or summarize the processing technology of pertinence.

The utility model provides a technical problem's scheme is:

a non-contact type spindle dynamic displacement detection device comprises a drilling machine main body, wherein a cutter handle part formed on the top of a reference test rod is fixed at the bottom of a spindle of a main machine head of the drilling machine main body;

the top surface of the fixed platform of the drilling machine main body is fixed with a connecting block, the top surface of the connecting block is fixed with a horizontal connecting plate, the top surface of the horizontal connecting plate is fixed with a transverse moving mechanism, the top surface of a transverse moving block of the transverse moving mechanism is fixed with an upper horizontal connecting plate, the top surface of the upper horizontal connecting plate is fixed with a front-back moving mechanism, the top surface of a moving block of the front-back moving mechanism is fixed with an upper transverse plate, the left top surface of the upper transverse plate is fixed with an upper fixed block, the middle part of the left side wall of the upper fixed block is fixed with a connecting rod, the left end of the connecting rod is fixed with an.

The induction end of the eddy current sensor is close to the center of the bottom surface of the reference test rod.

The transverse moving mechanism comprises two lower connecting plates, the bottom surfaces of the two lower connecting plates are fixed on the top surfaces of the left end and the right end of the horizontal connecting plate, a transverse moving screw rod is hinged to the two lower connecting plates through a bearing, one end of the transverse moving screw rod extends out of the corresponding lower connecting plate and is fixed with a lower rotating block, and a transverse moving block is in threaded connection with the transverse moving screw rod.

The bottom surface of the transverse moving block is fixed with a sliding block, the bottom surface of the sliding block is formed with a sliding groove, the middle of the top surface of the horizontal connecting plate is fixed with a transverse guide strip, and the transverse guide strip is inserted and sleeved in the corresponding sliding groove.

The top surfaces of the two lower connecting plates are fixed with upper wear-resistant lubricating blocks, and the bottom surfaces of the upper horizontal connecting plates are tightly attached to the top surfaces of the upper wear-resistant lubricating blocks.

The front-back moving mechanism comprises two upper connecting plates which are arranged front and back, the two upper connecting plates are fixed at the front end and the rear end of the top surface of the upper horizontal connecting plate, an upper transmission screw rod is hinged to the two upper connecting plates through a bearing, one end of the upper transmission screw rod extends out of the upper connecting plates and is fixed with an upper rotating block, and a moving block is in threaded connection with the upper transmission screw rod.

An upper sliding block is fixed on the bottom surface of the moving block, an upper sliding groove is formed in the bottom surface of the upper sliding block, an upper guide strip extending forwards and backwards is fixed in the middle of the top surface of the upper horizontal connecting plate, and the upper guide strip is inserted and sleeved in the upper sliding groove.

And a seed distributing block is fixed on the bottom surface of the right end of the upper transverse plate.

The eddy current sensor is electrically connected with the eddy current data processor through an electric connecting wire, the eddy current data processor is electrically connected with the data collector through an electric connecting wire, and the data collector is electrically connected with a computer through a usb interface.

The utility model discloses an outstanding effect is:

the eddy current sensor can be finely adjusted accurately left and right and back and forth, is stable in adjustment and good in effect, and can enable the induction end of the eddy current sensor to be close to the central axis of the bottom surface of the reference test rod, so that the actual displacement of the axis under the rotation condition of the main shaft of the main machine head can be accurately detected, namely, a dynamic numerical value, the displacement of each time node of the axis of the main shaft can be accurately captured, the change rule is summarized, a database is established, and a temperature compensation function model is established or a targeted processing technology is summarized.

Description of the drawings:

FIG. 1 is a schematic view of a partial structure of the present invention without the detection device;

fig. 2 is a partial front view of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

fig. 4 is a partial structural schematic view of the back-and-forth movement mechanism of the present invention;

fig. 5 is a partial top view of the present invention at the connecting rod;

fig. 6 is a schematic diagram of connection of components such as an eddy current sensor.

The specific implementation mode is as follows:

in an embodiment, as shown in fig. 1 to 6, a non-contact type spindle dynamic displacement detecting device includes a drill main body 10, a spindle bottom of a main head 11 of the drill main body 10 is fixed with a tool shank portion 121 formed on a top of a reference test bar 12;

the top surface of the fixed platform 13 of the drilling machine main body 10 is fixed with a connecting block 20, the top surface of the connecting block 20 is fixed with a horizontal connecting plate 21, the top surface of the horizontal connecting plate 21 is fixed with a transverse moving mechanism 22, the top surface of a transverse moving block 221 of the transverse moving mechanism 22 is fixed with an upper horizontal connecting plate 23, the top surface of the upper horizontal connecting plate 23 is fixed with a front-back moving mechanism 24, the top surface of a moving block 241 of the front-back moving mechanism 24 is fixed with an upper transverse plate 25, the top surface of the left part of the upper transverse plate 25 is fixed with an upper fixed block 26, the middle part of the left side wall of the upper fixed block 26 is fixed with a connecting rod 27, the left end of the connecting rod 27 is fixed with an.

Further, the sensing end of the eddy current sensor 28 is near the center of the bottom surface of the reference test bar 12.

Further, the transverse moving mechanism 22 includes two lower connecting plates 222, bottom surfaces of the two lower connecting plates 222 are fixed on top surfaces of left and right ends of the horizontal connecting plate 21, a transverse moving screw 223 is hinged on the two lower connecting plates 222 through a bearing, one end of the transverse moving screw 223 extends out of the corresponding lower connecting plate 222 and is fixed with a lower rotating block 224, and a transverse moving block 221 is screwed on the transverse moving screw 223.

Further, a sliding block 225 is fixed on the bottom surface of the transverse moving block 221, a sliding groove is formed on the bottom surface of the sliding block 225, a transverse guide bar 211 is fixed in the middle of the top surface of the horizontal connecting plate 21, and the transverse guide bar 211 is inserted into the corresponding sliding groove.

Furthermore, the top surfaces of the two lower connecting plates 222 are fixed with upper wear-resistant lubricating blocks 226, and the bottom surfaces of the upper horizontal connecting plates 23 are tightly attached to the top surfaces of the upper wear-resistant lubricating blocks 226.

Further, the front-back moving mechanism 24 includes two upper connecting plates 244 disposed in front and back, the two upper connecting plates 244 are fixed at the front end and the rear end of the top surface of the upper horizontal connecting plate 23, the upper transmission screw 242 is hinged to the two upper connecting plates 244 through a bearing, one end of the upper transmission screw 242 extends out of the upper connecting plates 244 and is fixed with an upper rotating block 243, and the moving block 241 is screwed on the upper transmission screw 242.

Further, an upper sliding block 245 is fixed to the bottom surface of the moving block 241, an upper sliding groove 246 is formed in the bottom surface of the upper sliding block 245, an upper guide bar 247 extending forward and backward is fixed to the middle of the top surface of the upper horizontal connecting plate 23, and the upper guide bar 247 is inserted into the upper sliding groove 246.

Further, the seed block 1 is fixed to the bottom surface of the right end of the upper transverse plate 25.

Furthermore, the eddy current sensor 28 is electrically connected to the eddy current data processor 3 through an electrical connection line, the eddy current data processor 3 is electrically connected to the data collector 4 through an electrical connection line, and the data collector 4 is electrically connected to the computer through a usb interface 41.

In the embodiment, the detection principle of the eddy current sensor 28 is adopted to realize non-contact detection, wherein the eddy current sensor 28, the eddy current data processor 3, the data collector 4 and the computer are all commonly-used known structures and are not described in detail, and a detection classification program, which is also a commonly-used program, is installed on the computer and is not described in detail.

The working principle is as follows: the connecting block 20 is a magnetic base which can open the switch of the connecting block 20, the connecting block 20 is fixed on the top surface of the fixed platform 13 in an absorbing way, then, by rotating the lower rotation block 224 and the upper rotation block 243, the adjustment of the connecting rod 27 in the x-axis direction (left-right lateral movement) and the adjustment in the z-axis direction (front-back movement) can be realized, the induction end of the current vortex sensor 28 faces the bottom center of the reference test bar 12, the main head 11 can be lowered by the machine tool control, the induction end of the current vortex sensor 28 is close to the bottom center of the reference test bar 12, then, by the rotation of the main shaft of the main head 11, it can be sensed by the sensing end of the eddy current sensor 28, the method can detect a plurality of groups of numerical values to obtain the actual displacement of the axis, summarize the change rule, establish a database and establish a temperature compensation function model or summarize a targeted processing technology.

The actual displacement of the axis and other data are transmitted to the eddy current data processor 3 through the eddy current sensor 28, the eddy current data processor 3 processes the signals and transmits the data to the data collector 4 through the electric connection line, the data collector 4 transmits the data to the computer through the usb interface 41, and the software on the computer counts to obtain related data and summarize the change rule, and establishes the database to establish the temperature compensation function model or summarize the specific processing technology.

As shown in FIG. 6, the electrical connection wire of the eddy current sensor 28 is connected with the ch1 connection channel of the eddy current data processor 3, and the ch1 connection port of the eddy current data processor 3 is connected with the ch1 input port of the data collector 4 through the connection wire.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. The utility model provides a non-contact main shaft dynamic displacement detection device, includes drilling machine main part (10), its characterized in that: a cutter handle part (121) formed at the top of the reference test bar (12) is fixed at the bottom of a main shaft of a main head (11) of the drilling machine main body (10);

the top surface of a fixed platform (13) of the drilling machine main body (10) is fixed with a connecting block (20), the top surface of the connecting block (20) is fixed with a horizontal connecting plate (21), the top surface of the horizontal connecting plate (21) is fixed with a transverse moving mechanism (22), the top surface of a transverse moving block (221) of the transverse moving mechanism (22) is fixed with an upper horizontal connecting plate (23), the top surface of the upper horizontal connecting plate (23) is fixed with a front-and-back moving mechanism (24), the top surface of a moving block (241) of the front-and-back moving mechanism (24) is fixed with an upper transverse plate (25), the left top surface of the upper transverse plate (25) is fixed with an upper fixing block (26), the middle part of the left side wall of the upper fixing block (26) is fixed with a connecting rod (27), the left end of the connecting rod (27) is fixed with an eddy current sensor (.

2. The non-contact type spindle dynamic displacement detection device according to claim 1, wherein: the sensing end of the eddy current sensor (28) is close to the center of the bottom surface of the reference test rod (12).

3. The non-contact type spindle dynamic displacement detection device according to claim 1, wherein: the transverse moving mechanism (22) comprises two lower connecting plates (222), the bottom surfaces of the two lower connecting plates (222) are fixed on the top surfaces of the left end and the right end of the horizontal connecting plate (21), a transverse moving screw (223) is hinged to the two lower connecting plates (222) through a bearing, one end of the transverse moving screw (223) extends out of the corresponding lower connecting plate (222) and is fixed with a lower rotating block (224), and a transverse moving block (221) is in threaded connection with the transverse moving screw (223).

4. The non-contact type spindle dynamic displacement detection device according to claim 3, wherein: sliding blocks (225) are fixed on the bottom surfaces of the transverse moving blocks (221), sliding grooves are formed in the bottom surfaces of the sliding blocks (225), transverse guide strips (211) are fixed in the middle of the top surfaces of the horizontal connecting plates (21), and the transverse guide strips (211) are inserted in the corresponding sliding grooves.

5. The non-contact type spindle dynamic displacement detection device according to claim 3, wherein: the top surfaces of the two lower connecting plates (222) are fixed with upper wear-resistant lubricating blocks (226), and the bottom surfaces of the upper horizontal connecting plates (23) are tightly attached to the top surfaces of the upper wear-resistant lubricating blocks (226).

6. The non-contact type spindle dynamic displacement detection device according to claim 1, wherein: the front-back moving mechanism (24) comprises two upper connecting plates (244) which are arranged front and back, the two upper connecting plates (244) are fixed at the front end and the rear end of the top surface of the upper horizontal connecting plate (23), an upper transmission screw rod (242) is hinged to the two upper connecting plates (244) through a bearing, one end of the upper transmission screw rod (242) extends out of the upper connecting plate (244) and is fixed with an upper rotating block (243), and a moving block (241) is in threaded connection with the upper transmission screw rod (242).

7. The non-contact type spindle dynamic displacement detection device according to claim 6, wherein: an upper sliding block (245) is fixed on the bottom surface of the moving block (241), an upper sliding groove (246) is formed in the bottom surface of the upper sliding block (245), an upper guide strip (247) extending forwards and backwards is fixed in the middle of the top surface of the upper horizontal connecting plate (23), and the upper guide strip (247) is inserted into the upper sliding groove (246).

8. The non-contact type spindle dynamic displacement detection device according to claim 1, wherein: and a seed distributing block (1) is fixed on the bottom surface of the right end of the upper transverse plate (25).

9. The non-contact type spindle dynamic displacement detection device according to claim 1, wherein: the eddy current sensor (28) is electrically connected with the eddy current data processor (3) through an electric connecting wire, the eddy current data processor (3) is electrically connected with the data acquisition unit (4) through an electric connecting wire, and the data acquisition unit (4) is electrically connected with a computer through a usb interface (41).