CN109342000B - Deep hole processing vibration test platform - Google Patents
Deep hole processing vibration test platform Download PDFInfo
- Publication number
- CN109342000B CN109342000B CN201811450292.3A CN201811450292A CN109342000B CN 109342000 B CN109342000 B CN 109342000B CN 201811450292 A CN201811450292 A CN 201811450292A CN 109342000 B CN109342000 B CN 109342000B
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- spindle
- mode vibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a deep hole machining vibration test platform, which relates to the field of deep hole machining technology test and comprises a machine tool, wherein an excitation module, a middle module and a feeding module are sequentially arranged on the machine tool from left to right; the combined test of any single, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration is realized under the combined working condition of different rotation states of the drill rod and the workpiece through the interaction of the excitation module, the middle module and the feeding module, so that the parameter adjustable range of the test platform is enlarged, and the functionality of the test platform is increased.
Description
Technical Field
The invention relates to the technical test field of deep hole machining, in particular to a deep hole machining vibration test platform for testing vibration of a drill rod under the condition that cutting fluid exists on the inner side and the outer side of the drill rod.
Background
In a deep hole processing system, due to the complexity of a cutting process, a drill rod is affected by factors such as disturbance of cutting fluid, radial vibration, axial vibration, torsional vibration and the like in the cutting process, so that the processing precision of the drill rod is difficult to control, and in order to improve the processing precision of the drill rod, the order of determining factors affecting the sensitivity of the drill rod becomes necessary, but in actual processing, due to the fact that the volumes of a workpiece and the drill rod are very large, a direct test can cause serious waste, and test conditions are difficult to realize, so that an experimental platform capable of dynamically simulating various working conditions in the deep hole processing process is necessary.
Chinese patent CN203858109U discloses an experimental platform for loading a machine tool spindle in a mixed manner, loading rods are loaded through axial and radial loading devices fixed on a lathe bed, and loading is performed on the end of the spindle through a magnetic powder vibrator fixed on the lathe bed, so that axial, radial and circumferential loading of the machine tool spindle is realized, and loading of a fixed position of the spindle is realized.
Chinese patent CN207066741U discloses a loading experiment device for simulating cutting force of a tool, wherein loading in three directions is applied to a loading rod mounted on a follow-up loading table, and a thrust bolt of a three-way loading device is adjusted to realize multistage loading of the loading rod, so that simulation of cutting force of the tool is realized.
Disclosure of Invention
The invention aims to provide a deep hole machining vibration test platform; the technical scheme adopted for achieving the purpose is as follows:
a deep hole machining vibration test platform comprises a machine tool, wherein an excitation module, a middle module and a feeding module are sequentially arranged on the machine tool from left to right;
the vibration excitation module comprises a left sliding rail arranged on the machine tool, the left sliding rail is arranged along the left-right direction, a first base and a second base are connected to the left sliding rail in a sliding manner, a torsional vibration exciter is fixed on the first base, an expansion sleeve coupler for coaxially connecting a drill rod is connected to an output shaft of the torsional vibration exciter, a first mode vibration exciter, a second mode vibration exciter and a third mode vibration exciter are fixed on the second base, a push rod of the first mode vibration exciter is arranged along the left-right direction, a push rod of the first mode vibration exciter is arranged in the direction of the expansion sleeve coupler, a push rod of the second mode vibration exciter and a push rod of the third mode vibration exciter are both vertically arranged in the direction of the drill rod, and the push rod of the second mode vibration exciter is vertical to the push rod of the third mode vibration exciter;
the middle module comprises a spindle box fixed on a machine tool, a spindle arranged along the left-right direction is rotationally connected to the spindle box, chucks are arranged at the left end and the right end of the spindle, a center hole arranged along the left-right direction is arranged at the center of the spindle, a workpiece traverses the center hole of the spindle and is fixed through the left-right chucks, an oil seal device is arranged at the left end of the workpiece, an oil receiver is arranged at the right end of the workpiece, a right sliding rail is fixed on the machine tool on the right side of the spindle box, a third base is slidingly connected to the right sliding rail, and the oil receiver is fixed on the third base; a driving belt pulley and a motor for providing rotation power for the driving belt pulley are rotationally connected to the top of the spindle box, a driven belt pulley is fixed on the spindle, and a transmission belt is arranged between the driving belt pulley and the driven belt pulley;
the feeding module is connected to the right sliding rail in a sliding way, and a spindle motor for driving the drill rod to rotate is fixed on the feeding module.
Preferably, a first dovetail guide rail is arranged on the second base, the first dovetail guide rail is arranged along the ejector rod direction of the third mode vibration exciter, a first dovetail sliding seat is connected to the first dovetail guide rail in a sliding manner, and the second mode vibration exciter is fixed on the first dovetail sliding seat; the second base is provided with a second dovetail guide rail, the second dovetail guide rail is arranged along the ejector rod direction of the second mode vibration exciter, the second dovetail guide rail is connected with a second dovetail sliding seat in a sliding mode, and the third mode vibration exciter is fixed on the second dovetail sliding seat.
Preferably, a rack arranged along the left-right direction is arranged at the bottom of the left sliding rail, gears meshed with the racks are rotationally connected to the first base and the second base, and servo motors for driving the gears to rotate are fixedly arranged on the first base and the second base.
Preferably, the two ends of the main shaft are rotatably connected with the main shaft box through rolling bearings, and the left end or the right end of the main shaft is rotatably connected with the main shaft box through a pair of thrust bearings.
Preferably, a center frame is slidably connected on a right sliding rail between the spindle box and the third base, the center frame comprises a fourth base, a left arm and a right arm extend upwards from the top of the fourth base, a left roller is rotationally connected to the left arm, a right roller is rotationally connected to the right arm, a wedge-shaped seat and an adjusting rod are arranged at the top of the fourth base, the adjusting rod is rotationally adjusted to adjust the wedge-shaped seat to move up and down, a bottom roller is rotationally connected to the wedge-shaped seat, and interaction of the left roller, the right roller and the bottom roller plays a supporting role on a workpiece.
Preferably, the motor and the driving belt wheel are connected in a transmission way through a hydraulic coupler, a speed reducer and a coupler in sequence.
The invention has the beneficial effects that: the combined test of any single, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration is realized under the combined working condition of different rotation states of the drill rod and the workpiece through the interaction of the excitation module, the middle module and the feeding module, so that the parameter adjustable range of the test platform is enlarged, and the functionality of the test platform is increased.
The whole structure is compact, compared with the existing deep hole processing machine tool, the size is greatly reduced, the space is saved, and meanwhile, the test cost is reduced.
The servo motor controls the gear rack, so that the real-time dynamic detection of the fixed section of the drill rod is ensured, and the accuracy of the test is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a view along the direction A in FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1;
fig. 4 is a cross-sectional view taken along line C-C in fig. 1.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the invention comprises a machine tool 1, wherein an excitation module, an intermediate module and a feeding module 302 are sequentially arranged on the machine tool 1 from left to right;
the vibration excitation module comprises a left sliding rail 112 arranged on the machine tool 1, the left sliding rail 1012 is arranged along the left-right direction, a first base 111 and a second base 110 are connected to the left sliding rail 1012 in a sliding manner, a torsional vibration exciter 101 is fixed on the first base 111, an expansion sleeve coupler 102 for coaxially connecting a drill rod 104 is connected to an output shaft of the torsional vibration exciter 101, a first mode vibration exciter 103, a second mode vibration exciter 108 and a third mode vibration exciter 105 are fixed on the second base 109, ejector rods of the first mode vibration exciter 103 are arranged along the left-right direction, ejector rods of the first mode vibration exciter 103 are arranged in the direction of the expansion sleeve coupler 102, ejector rods of the second mode vibration exciter 108 and ejector rods of the third mode vibration exciter 105 are all arranged in the direction of the drill rod 104 in a vertical direction, and the ejector rods of the second mode vibration exciter 108 and the third mode vibration exciter 105 are vertical;
the middle module comprises a spindle box 212 fixed on the machine tool 1, a spindle 214 arranged along the left-right direction is rotationally connected to the spindle box 212, chucks 215 are arranged at the left end and the right end of the spindle 214, a center hole arranged along the left-right direction is arranged in the center of the spindle 214, a workpiece 208 needing deep hole machining traverses the center hole of the spindle 214 and is fixed through the left-right chucks 215, an oil seal 216 is arranged at the left end of the workpiece 208, an oil receiver 209 is arranged at the right end of the workpiece 208, a right sliding rail 303 is fixed on the machine tool 1 on the right side of the spindle box 212, a third base 210 is connected to the right sliding rail 303 in a sliding way, and the oil receiver 209 is fixed on the third base 210; a driving pulley 205 and a motor 201 for providing rotation power for the driving pulley 205 are rotatably connected to the top of the spindle box 212, a driven pulley 213 is fixed on the spindle 214, and a transmission belt is arranged between the driving pulley 205 and the driven pulley 213; the motor 201 is in transmission connection with the driving belt pulley 205 through the fluid coupling 202, the speed reducer 203 and the coupler 204 in sequence.
The feeding module 302 is slidably connected to the right slide rail 303, and a spindle motor 301 for driving the drill rod 104 to rotate is fixed on the feeding module 302.
As shown in fig. 1, in order to realize centering adjustment of the drill rods of the second mode vibration exciter 108 and the third mode vibration exciter 105, a first dovetail guide rail 107 is arranged on the second base 109, the first dovetail guide rail 107 is arranged along the ejector rod direction of the third mode vibration exciter 105, namely along the direction vertical to the paper surface, a first dovetail sliding seat 106 is connected to the first dovetail guide rail 107 in a sliding manner, and the second mode vibration exciter 105 is fixed on the first dovetail sliding seat 106; the second base 109 is provided with a second dovetail rail, the second dovetail rail is arranged along the direction of the ejector rod of the second mode vibration exciter 108, that is, along the vertical direction, a second dovetail slide seat is slidably connected to the second dovetail rail, and the third mode vibration exciter 105 is fixed on the second dovetail slide seat.
A rack arranged along the left-right direction is arranged at the bottom of the left slide rail 112, gears 110 meshed with the racks are rotatably connected to the first base 111 and the second base 109, and servo motors 113 for driving the gears to rotate are fixed to the first base 111 and the second base 109.
Further, the two ends of the spindle 214 are rotatably connected to the spindle box 212 through rolling bearings 207, and the right end of the spindle is rotatably connected to the spindle box 212 through a pair of thrust bearings 206, so as to prevent axial play of the spindle 214.
As shown in fig. 4, a center frame 211 is slidably connected to a right slide rail 303 between the headstock 212 and the third base 210, the center frame 211 includes a fourth base 225, a left arm 219 and a right arm 222 extend upward from the top of the fourth base 225, a left roller 220 is rotatably connected to the left arm 219, a right roller 221 is rotatably connected to the right arm 222, a wedge base 217, a wedge block 223 and an adjusting rod 224 are provided on the top of the fourth base 225, the adjusting rod 224 is rotated to adjust the wedge base 217 to move up and down, a bottom roller 218 is rotatably connected to the wedge base 217, and the interaction of the left roller 220, the right roller 221 and the bottom roller 218 supports the workpiece 208.
In the invention, (1) the torsional vibration exciter 101 is a magnetic powder brake, and drives the drill rod 104 to generate torsional vibration through the central expansion sleeve coupler 102, so that the torsional vibration loading test of the drill rod 104 is realized. (2) The ejector rod of the first mode vibration exciter 103 acts on the central expansion sleeve coupler 102, and the central expansion sleeve coupler 102 is connected with the drill rod 104, so that the drill rod 104 generates axial vibration, and an axial vibration loading test of the drill rod 104 is realized. (3) The ejector rods of the second mode vibration exciter 108 and the third mode vibration exciter 105 act on the drill rod 104 to enable the drill rod 104 to generate radial vibration, so that a radial vibration loading test of the drill rod 104 is realized. (4) The motor 201 drives the spindle 214 and the workpiece 208 to rotate through the transmission action between the driving pulley 205 and the driven pulley 213. (5) spindle motor 301 rotates drill pipe 104. (6) The feeding module 302, the first base 111, the second base 110, the third base 210, and the center frame 211 move left and right synchronously.
The test was performed at work time in several cases:
1. the drill rod 104 rotates without rotating the workpiece 208, cutting fluid is introduced into an inlet of the oil feeder 209 and enters a gap between a deep hole of the workpiece and the outer side of the drill rod to form an external cutting fluid environment, the cutting fluid in the drill rod is injected to form an internal cutting fluid environment so as to ensure that the inner side and the outer side of the drill rod 104 simultaneously contain the action of the cutting fluid, finally, a spindle motor 301 is turned on to enable the drill rod 104 to generate a rotating speed, the feeding speed of the drill rod 104 is set through a feeding module 302, meanwhile, a servo motor 113 is turned on to give out an electric control signal, and the rotating speed of a gear 110 on a rack is kept consistent with the feeding speed of the drill rod 104, so that deep hole machining vibration test is started.
And then carrying out any one, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration for combined test.
2. The drill rod 104 does not rotate, the workpiece 208 rotates, cutting fluid is introduced into an inlet of the oil feeder 209 and enters a gap between a deep hole of the workpiece and the outer side of the drill rod to form an external cutting fluid environment, the cutting fluid in the drill rod is injected to form an internal cutting fluid environment so as to ensure that the inner side and the outer side of the drill rod 104 simultaneously contain the action of the cutting fluid, finally, a motor 201 is turned on to enable the workpiece 208 to generate a rotation speed, the feeding speed of the drill rod 104 is set through a feeding module 302, meanwhile, a servo motor 113 is turned on to give out an electric control signal, so that the rotation speed of a gear 110 on a rack is kept consistent with the feeding speed of the drill rod 104, and a deep hole machining vibration test is started.
And then carrying out any one, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration for combined test.
3. The drill rod 104 and the workpiece 208 rotate simultaneously, cutting fluid is introduced into an inlet of the oil feeder 209 and enters a gap between a deep hole of the workpiece and the outer side of the drill rod to form an external cutting fluid environment, the cutting fluid in the drill rod is injected to form an internal cutting fluid environment so as to ensure that the inner side and the outer side of the drill rod 104 simultaneously contain the action of the cutting fluid, finally, a spindle motor 301 is turned on to enable the drill rod 104 to generate a rotating speed, a motor 201 is turned on to enable the workpiece 208 to generate the rotating speed, a feeding speed of the drill rod 104 is set through a feeding module 302, a servo motor 113 is turned on simultaneously, an electric control signal is given, the rotating speed of the gear 110 on a rack is kept consistent with the feeding speed of the drill rod 104, and a deep hole machining vibration test is started.
And then carrying out any one, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration for combined test.
The mutual matching of the excitation module, the middle module and the feeding module 302 realizes that any one, any two, any three or any four of the four tests of torsional vibration loading test, axial vibration loading test, radial vibration and double radial vibration are combined under the combined working condition of different rotation states of the drill rod 104 and the workpiece 208, so that the parameter adjustable range of the test platform is enlarged, and the functionality of the test platform is increased.
The whole structure is compact, compared with the existing deep hole processing machine tool, the size is greatly reduced, the space is saved, and meanwhile, the test cost is reduced.
The servo motor 113 controls the rack of the gear 110, so that real-time dynamic detection of the fixed section of the drill rod 104 is ensured, and the accuracy of the test is improved.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is for convenience only as well as for simplicity of description, and nothing more than a particular meaning of the terms is intended to be used unless otherwise stated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The deep hole machining vibration test platform is characterized by comprising a machine tool, wherein an excitation module, a middle module and a feeding module are sequentially arranged on the machine tool from left to right;
the vibration excitation module comprises a left sliding rail arranged on the machine tool, the left sliding rail is arranged along the left-right direction, a first base and a second base are connected to the left sliding rail in a sliding manner, a torsional vibration exciter is fixed on the first base, an expansion sleeve coupler for coaxially connecting a drill rod is connected to an output shaft of the torsional vibration exciter, a first mode vibration exciter, a second mode vibration exciter and a third mode vibration exciter are fixed on the second base, a push rod of the first mode vibration exciter is arranged along the left-right direction, a push rod of the first mode vibration exciter is arranged in the direction of the expansion sleeve coupler, a push rod of the second mode vibration exciter and a push rod of the third mode vibration exciter are both vertically arranged in the direction of the drill rod, and the push rod of the second mode vibration exciter is vertical to the push rod of the third mode vibration exciter;
the middle module comprises a spindle box fixed on a machine tool, a spindle arranged along the left-right direction is rotationally connected to the spindle box, chucks are arranged at the left end and the right end of the spindle, a center hole arranged along the left-right direction is arranged at the center of the spindle, a workpiece traverses the center hole of the spindle and is fixed through the left-right chucks, an oil seal device is arranged at the left end of the workpiece, an oil receiver is arranged at the right end of the workpiece, a right sliding rail is fixed on the machine tool on the right side of the spindle box, a third base is slidingly connected to the right sliding rail, and the oil receiver is fixed on the third base; a driving belt pulley and a motor for providing rotation power for the driving belt pulley are rotationally connected to the top of the spindle box, a driven belt pulley is fixed on the spindle, and a transmission belt is arranged between the driving belt pulley and the driven belt pulley;
the feeding module is connected to the right sliding rail in a sliding way, and a spindle motor for driving the drill rod to rotate is fixed on the feeding module.
2. The deep hole machining vibration test platform according to claim 1, wherein a first dovetail guide rail is arranged on the second base, the first dovetail guide rail is arranged along the ejector rod direction of the third mode vibration exciter, a first dovetail slide seat is connected to the first dovetail guide rail in a sliding manner, and the second mode vibration exciter is fixed on the first dovetail slide seat; the second base is provided with a second dovetail guide rail, the second dovetail guide rail is arranged along the ejector rod direction of the second mode vibration exciter, the second dovetail guide rail is connected with a second dovetail sliding seat in a sliding mode, and the third mode vibration exciter is fixed on the second dovetail sliding seat.
3. The deep hole machining vibration test platform according to claim 1 or 2, wherein racks arranged in the left-right direction are arranged at the bottom of the left sliding rail, gears meshed with the racks are rotatably connected to the first base and the second base, and servo motors for driving the gears to rotate are fixed to the first base and the second base.
4. The deep hole machining vibration test platform according to claim 3, wherein two ends of the main shaft are rotatably connected with the main shaft box through rolling bearings, and the left end or the right end of the main shaft is rotatably connected with the main shaft box through a pair of thrust bearings.
5. The deep hole machining vibration test platform according to claim 3, wherein a center frame is slidably connected to a right sliding rail between the spindle box and the third base, the center frame comprises a fourth base, a left arm and a right arm extend upwards from the top of the fourth base, a left roller is rotatably connected to the left arm, a right roller is rotatably connected to the right arm, a wedge seat and an adjusting rod are arranged on the top of the fourth base, the adjusting rod is rotated to adjust the wedge seat to move up and down, a bottom roller is rotatably connected to the wedge seat, and interaction of the left roller, the right roller and the bottom roller supports a workpiece.
6. The deep hole machining vibration test platform according to claim 5, wherein the motor is in transmission connection with the driving pulley through a hydraulic coupler, a speed reducer and a coupler in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450292.3A CN109342000B (en) | 2018-11-30 | 2018-11-30 | Deep hole processing vibration test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450292.3A CN109342000B (en) | 2018-11-30 | 2018-11-30 | Deep hole processing vibration test platform |
Publications (2)
| Publication Number | Publication Date |
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| CN109342000A CN109342000A (en) | 2019-02-15 |
| CN109342000B true CN109342000B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811450292.3A Active CN109342000B (en) | 2018-11-30 | 2018-11-30 | Deep hole processing vibration test platform |
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| CN (1) | CN109342000B (en) |
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| CN109342000A (en) | 2019-02-15 |
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