CN113909994A - Hard rotary milling machining cutting force measuring device and measuring method thereof - Google Patents
Hard rotary milling machining cutting force measuring device and measuring method thereof Download PDFInfo
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- CN113909994A CN113909994A CN202111085983.XA CN202111085983A CN113909994A CN 113909994 A CN113909994 A CN 113909994A CN 202111085983 A CN202111085983 A CN 202111085983A CN 113909994 A CN113909994 A CN 113909994A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
Abstract
The invention belongs to the field of cutting machining, in particular to a cutting force measuring device for hard rotary milling machining and a measuring method thereof, wherein the cutting force measuring device comprises a signal acquisition system and a signal output system; the signal acquisition system comprises a hollow square iron pipe fixedly arranged on the back of the cutter head, and an analog acquisition module, a wireless transmission module A, an antenna A and a group of lithium batteries are arranged on the hollow square iron pipe; the cutter bar is provided with an installation groove so as to install a dynamometer conveniently; the signal output system comprises an antenna B, a wireless transmission module B, USB communication converter and a computer which are connected in sequence by lines, wherein the antenna A is in wireless signal communication with the antenna B; when the blade cuts, the dynamometer generates a voltage signal, the analog acquisition module acquires the signal and transmits the signal to the receiving end through the wireless transmission module, and the hard rotary milling time-varying cutting force is measured. The invention simplifies the complexity of the device for measuring the cutting force of the large-diameter workpiece under the condition of cutter-workpiece double rotation; meanwhile, the distortion of slip ring signal transmission during high-speed rotation is avoided, and the time-varying cutting force in the hard rotary milling process can be effectively measured.
Description
Technical Field
The invention belongs to the field of cutting machining, and particularly relates to a method and a device for measuring cutting force in a hard rotary milling machining process.
Background
The hard rotary milling process has time-varying intermittent cutting characteristics, so that the cutting force of the cutter is distributed unevenly, the cutting force is an important index for researching a material removal mechanism in the cutting process, is an important influence factor of machine tool machining precision and cutter service life, and has important significance for actual production. Therefore, the method is very important for monitoring the cutting force in the machining process of the machine tool, and has important significance for prolonging the service life of the cutter, and optimizing process parameters and the cutter structure.
In the process of hard rotary milling, a cutter head and a workpiece rotate simultaneously, and the conventional method is difficult to effectively measure the cutting force. The dynamometer is the most commonly used instrument of cutting force in the present measurement cutting process, and miniature force cell sensor has self small, and easy installation, response frequency advantage such as higher can install and carry out the measurement of cutting force on ordinary lathe, but, still has the problem to solve at present in the hard milling machine that revolves: (1) a cutter head of the hard rotary milling machine rotates at a high speed, a common dynamometer is installed on the cutter head, and the dynamometer is in a problem of being connected with an output terminal; (2) because the cutter and the workpiece rotate in the cyclone milling process, the traditional force measuring scheme is that the signal of the force measuring sensor is output through the electric slip ring, and when the diameter of the workpiece is larger, the large-diameter through hole electric slip ring is needed, so that the device has a complex structure and high cost.
According to the conventional method for measuring the cutting force, a CN201210007955.0 fastens a three-way piezoelectric force sensor between a cutter holder and a cutter bar, and measures the transient cutting force of each cutter on a rotary milling cutter head synchronously by taking a multi-channel through-hole type slip ring as an electrical interface between a sensing device and a data acquisition device. The existing cutting force measuring device has the disadvantages that the installation of a slip ring requires the drilling reconstruction of a cutter head, the device is complex in structure, a connection line transmission mode is adopted by a force measuring sensor and a data acquisition device, when the cutter head rotates at a high speed, the connection line is easy to be wound, and potential safety hazards exist.
Disclosure of Invention
The technical scheme of the invention is a novel wireless cutting force measuring device of a hard rotary milling machine based on a miniature dynamometer, which simplifies the complexity of the cutting force measuring device of a large-diameter workpiece under the condition of cutter-workpiece double rotation and reduces the cost; meanwhile, the distortion of slip ring signal transmission during high-speed rotation is avoided, and the time-varying cutting force in the hard rotary milling process can be effectively measured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cutting force measuring device for hard rotary milling comprises a signal acquisition system and a signal output system, wherein the signal acquisition system is arranged on a cutter head;
the signal acquisition system comprises a hollow square iron pipe fixedly installed on the back face of the cutter head, an aluminum alloy shell A and an aluminum alloy shell B are fixedly arranged in the hollow square iron pipe, an analog acquisition module and a group of lithium batteries are arranged in the aluminum alloy shell A, and a wireless transmission module A, an antenna A and a group of lithium batteries are arranged in the aluminum alloy shell B; a cutter bar of the cutter head is provided with an installation groove, a dynamometer is installed in the installation groove, and the dynamometer, the analog acquisition module, the wireless transmission module A and the antenna A are sequentially connected through a line;
the signal output system comprises an antenna B, a wireless transmission module B, USB communication converter and a computer which are sequentially connected through lines, wherein the antenna A is in wireless signal communication with the antenna B.
As a further preferable scheme, an aluminum alloy shell C is fixedly arranged in the hollow square iron pipe, and a winding redundant line is arranged in the aluminum alloy shell C.
As a further preferable scheme, the aluminum alloy shell a, the aluminum alloy shell B and the aluminum alloy shell C are all mounted on the inner wall of the hollow square iron pipe.
As a further preferable aspect, the signal output system further includes a power supply.
As a further preferable scheme, one end of the hollow square iron pipe is open, and the open end of the hollow square iron pipe faces the back of the cutter head.
A measuring method of a hard rotary milling machining cutting force measuring device comprises the following steps:
the method comprises the following steps: the machine tool is started, the clamping jaw drives a workpiece to rotate at a low speed, the cutter head rotates at a high speed, the hollow square iron pipe rotates along with the cutter head, the cutter head and the clamping jaw rotate in the same direction, and the cutter bar upper blade cuts the workpiece;
step two: when the blade is used for cutting, the cutting force is transmitted to the dynamometer through the cutter bar;
step three: the dynamometer generates a voltage signal, the voltage signal is collected by the analog collection module and is sent to the antenna A through the wireless transmission module A to realize signal sending;
step four: the antenna B receives the signal and transmits the signal to the wireless transmission module B, the wireless transmission module B transmits the signal to the USB communication converter and sends the signal to the computer, and the computer displays the cutting force data in real time.
The novel wireless cutting force measuring device of the hard rotary milling machine tool simplifies the complexity of the cutting force measuring device of the large-diameter workpiece under the condition of cutter-workpiece double rotation, and reduces the cost; meanwhile, the distortion of slip ring signal transmission during high-speed rotation is avoided, and the time-varying cutting force in the hard rotary milling process can be effectively measured.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a view of the tool holding apparatus of the present invention
FIG. 3 is a schematic view of the load cell mounting of the present invention
FIG. 4 is a diagram of a signal receiving apparatus of the present invention
In the drawings: the device comprises a hollow square iron pipe 1, a through hole 2, an aluminum alloy shell A3, an aluminum alloy shell B4, an aluminum alloy shell C5, a cutter head 6, a blade 7, a cutter bar 8, a dynamometer 9, a countersunk head screw A10, a countersunk head screw B11, a hexagon screw 12, an antenna B13, a wireless transmission module B14, a USB communication converter 15, a computer 16 and a power supply 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The invention aims to provide a novel wireless cutting force measuring device of a hard rotary milling machine tool, which comprises a cutter clamping device, a cutting force output device and a cutting force receiving device.
The cutter clamping device comprises a cutter head 6, a cutter bar 8, a dynamometer, a blade 7, a hexagon screw 12, a countersunk screw A10 and a nut, wherein a groove is formed in the cutter bar 8, the dynamometer 9 is inserted into the through groove, and the dynamometer 9 is connected with the cutter bar 8 through a screw.
The cutting force output device comprises a hollow square iron pipe 1, screws, 24V lithium batteries (two groups), an analog quantity collector, a wireless transmission module A, an antenna A, a dynamometer and an aluminum alloy shell (three groups), wherein the aluminum alloy shell A3, the aluminum alloy shell B4 and the aluminum alloy shell C5 are respectively arranged, and a terminal at the tail part of the dynamometer 9 is connected with the analog quantity collection module and the lithium batteries; the analog quantity acquisition module and the wireless transmission module A are connected with another group of lithium batteries in parallel through a lead; the antenna is connected with the wireless transmission module A; the analog acquisition module and a group of lithium batteries are arranged in an aluminum alloy shell; the wireless transmission module A, the antenna A and a group of lithium batteries are arranged in an aluminum alloy shell; redundant conducting wires of the dynamometer are placed in an aluminum alloy shell; three aluminum alloy shells are fixed on the hollow square iron pipe.
The cutting force receiving device consists of a wireless transmission module B14, an antenna B13, a USB communication converter 15, a computer 16 and a power supply 17.
The invention relates to a novel wireless cutting force measuring device of a hard rotary milling machine tool, which can acquire signals of a dynamometer 9 through a wireless transmission module A while the machine tool rotates at a high speed to obtain a time-varying cutting force value in the hard rotary milling process.
According to the size of the dynamometer 9, the side face of the cutter bar 8 is hollowed, the side face of the cutter bar 8 and the cutter bar are fixed through countersunk screws 11, the PCBN blade 7 is fixed on the cutter bar 8 through hexagon screws 12, and the cutter bar 8 is fixed on the cutter head 6 through two countersunk screws 10, so that the clamping of the cutter is completed.
The unnecessary line of dynamometer 9 is fixed in aluminum alloy housing B4, pull out a small segment line connection simulation collection module and lithium cell A, realize the power supply of lithium cell A to the dynamometer, and fix in aluminum alloy housing C, lithium cell B supplies power for simulation collection module and wireless transmission module A through the wire is parallelly connected, antenna A links to each other with wireless transmission module A port, with unnecessary wire, wireless transmission module A and antenna A fix in aluminum alloy housing A, the pulling out of connecting wire is guaranteed in the trompil of three aluminum alloy housing all in both sides, the wire outside the aluminum alloy housing uses insulating tape to bind and fix.
A hollow square iron pipe 1 is fixed behind the cutter head, so that the square pipe and the cutter head rotate simultaneously, the dynamometer 9 penetrates through the through hole 2 and is fixed on the cutter bar at the front end, and the aluminum alloy shell A, B, C is fixed on the hollow square iron pipe through screws respectively.
The output device consists of 13 antennae B, 14 wireless transmission modules B, 15 USB communication converters, 16 computers and 17 power supplies, wherein the antenna B13 is connected with an antenna port of the wireless transmission module B14, the power supply 17 is connected with a power supply port of the wireless transmission module B14, the wireless transmission module B14 is connected with the USB communication converter 15 through a lead, the USB communication converter is connected with the computer 16 through a connecting wire, a signal receiving device is completed, signal transmission is carried out on the signal receiving device and the machine tool wireless communication module A, and data are recorded on the computer 16.
When the machine tool is started, the cutter head immediately starts to rotate, the hollow square iron pipe 1 also synchronously rotates, the dynamometer 9 generates a voltage signal when the blade cuts, the voltage signal is acquired by the analog quantity acquisition module and is transmitted to the signal receiving device through the wireless transmission module, and the measurement of the hard rotary milling time-varying cutting force is completed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a hard processing cutting force measuring device that mills soon which characterized in that: the device comprises a signal acquisition system and a signal output system, wherein the signal acquisition system is arranged on a cutter head (6);
the signal acquisition system comprises a hollow square iron pipe (1) fixedly installed on the back of a cutter head (6), an aluminum alloy shell A (3) and an aluminum alloy shell B (4) are fixedly arranged in the hollow square iron pipe (1), an analog acquisition module and a group of lithium batteries are arranged in the aluminum alloy shell A (3), and a wireless transmission module A, an antenna A and a group of lithium batteries are arranged in the aluminum alloy shell B (4); a cutter bar (8) of the cutter head (6) is provided with an installation groove, a dynamometer (9) is installed in the installation groove, and the dynamometer (9), the analog acquisition module, the wireless transmission module A and the antenna A are sequentially connected through a line;
the signal output system comprises an antenna B (13), a wireless transmission module B (14), a USB communication converter (15) and a computer (16) which are sequentially connected through lines, wherein the antenna A is in wireless signal communication with the antenna B (13).
2. The device for measuring the cutting force of the hard rotary milling process according to claim 1, wherein: an aluminum alloy shell C (5) is fixedly arranged in the hollow square iron pipe (1), and a winding redundant line is arranged in the aluminum alloy shell C (5).
3. The device for measuring the cutting force of the hard rotary milling process according to claim 2, wherein: the aluminum alloy shell A (3), the aluminum alloy shell B (4) and the aluminum alloy shell C (5) are all installed on the inner wall of the hollow square iron pipe (1).
4. The device for measuring the cutting force of the hard rotary milling process according to claim 1, wherein: the signal output system further comprises a power supply (17).
5. The device for measuring the cutting force of the hard rotary milling process according to claim 1, wherein: one end of the hollow square iron pipe (1) is provided with an opening, and the opening end of the hollow square iron pipe (1) faces the back of the cutter head (6).
6. The measurement method of the cutting force measurement device for hard rotary milling machining according to any one of claims 1 to 5, characterized by comprising the steps of:
the method comprises the following steps: the machine tool is started, the clamping jaw drives a workpiece to rotate at a low speed, the cutter head (6) rotates at a high speed, the hollow square iron pipe (1) rotates along with the cutter head (6), the cutter head (6) rotates in the same direction as the clamping jaw, and the workpiece is cut by the blade (7) on the cutter bar (8);
step two: when the blade (7) cuts, the cutting force is transmitted to the dynamometer (9) through the cutter bar (8);
step three: the dynamometer (9) generates a voltage signal, the voltage signal is acquired by the analog acquisition module and is sent to the antenna A through the wireless transmission module A to realize signal transmission;
step four: the antenna B (13) receives the signal and transmits the signal to the wireless transmission module B (14), the wireless transmission module B (14) transmits the signal to the USB communication converter (15) and sends the signal to the computer (16), and the computer (16) displays the cutting force data in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111085983.XA CN113909994A (en) | 2021-09-16 | 2021-09-16 | Hard rotary milling machining cutting force measuring device and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111085983.XA CN113909994A (en) | 2021-09-16 | 2021-09-16 | Hard rotary milling machining cutting force measuring device and measuring method thereof |
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| CN113909994A true CN113909994A (en) | 2022-01-11 |
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| CN202111085983.XA Pending CN113909994A (en) | 2021-09-16 | 2021-09-16 | Hard rotary milling machining cutting force measuring device and measuring method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020122704A1 (en) * | 2000-05-15 | 2002-09-05 | Hutton William M. | Method and apparatus for underground connection of pipe |
| CN102554702A (en) * | 2012-01-12 | 2012-07-11 | 南京理工大学 | Device for measuring cutting force and cutting temperature of cutter holder type rotary milling blade |
| CN206366863U (en) * | 2016-11-30 | 2017-08-01 | 太原科技大学 | The intelligent cutting tool unit of gradient piezoelectric ceramics that cutting force self is known |
| CN109396955A (en) * | 2017-08-16 | 2019-03-01 | 山东大学 | A kind of prediction of Turning Force with Artificial method and system towards whirlwind Envelope Milling technique |
| CN110091215A (en) * | 2019-05-08 | 2019-08-06 | 北京理工大学 | A kind of real-time monitoring Milling Force, the wireless transmission intelligence knife handle detection system of vibration |
| CN113182574A (en) * | 2021-05-17 | 2021-07-30 | 常熟万克精密工具有限公司 | Fine adjustment type cyclone milling cutter head |
-
2021
- 2021-09-16 CN CN202111085983.XA patent/CN113909994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020122704A1 (en) * | 2000-05-15 | 2002-09-05 | Hutton William M. | Method and apparatus for underground connection of pipe |
| CN102554702A (en) * | 2012-01-12 | 2012-07-11 | 南京理工大学 | Device for measuring cutting force and cutting temperature of cutter holder type rotary milling blade |
| CN206366863U (en) * | 2016-11-30 | 2017-08-01 | 太原科技大学 | The intelligent cutting tool unit of gradient piezoelectric ceramics that cutting force self is known |
| CN109396955A (en) * | 2017-08-16 | 2019-03-01 | 山东大学 | A kind of prediction of Turning Force with Artificial method and system towards whirlwind Envelope Milling technique |
| CN110091215A (en) * | 2019-05-08 | 2019-08-06 | 北京理工大学 | A kind of real-time monitoring Milling Force, the wireless transmission intelligence knife handle detection system of vibration |
| CN113182574A (en) * | 2021-05-17 | 2021-07-30 | 常熟万克精密工具有限公司 | Fine adjustment type cyclone milling cutter head |
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