CN111992820B - Electric tapping system for small-diameter screw tap - Google Patents
Electric tapping system for small-diameter screw tap Download PDFInfo
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- CN111992820B CN111992820B CN202010772027.8A CN202010772027A CN111992820B CN 111992820 B CN111992820 B CN 111992820B CN 202010772027 A CN202010772027 A CN 202010772027A CN 111992820 B CN111992820 B CN 111992820B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
- B23G1/18—Machines with one working spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
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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
- B23Q17/0957—Detection of tool breakage
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Abstract
The invention relates to the technical field of electric tools, and provides an electric tapping system for a small-diameter screw tap, which comprises a torque detection device, a single chip microcomputer and a broken tap protection device, wherein the torque detection device is used for detecting the torque of the screw tap in the tapping process of the screw tap and sending a detected torque signal of the screw tap to the single chip microcomputer; the single chip microcomputer is connected with the cone breaking protection device and used for receiving the torque signal sent by the torque detection device, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value or not, and sending a cone breaking protection instruction to the cone breaking protection device when the torque signal is detected to be greater than or equal to the preset upper limit value; the broken cone protection device is used for receiving a broken cone protection instruction sent by the single chip microcomputer and executing broken cone protection action according to the broken cone protection instruction, so that the problem that a cone is easily broken during tapping of a screw tap is solved, the yield of machined workpieces is improved, and cost and loss are reduced.
Description
Technical Field
The invention belongs to the technical field of electric tools, and particularly relates to an electric tapping system for a small-diameter screw tap.
Background
The tapping machine is a machining device for machining internal threads and screws on the inner side surfaces of holes of various workpieces with through holes or blind holes of different specifications, such as a workpiece shell, a nut, a flange plate and the like. The current common types are pneumatic tappers and electric tappers. The pneumatic tapping machine is a mechanical device which uses high-pressure air to drive a pneumatic motor to drive a screw tap. The electric tapping machine adopts a motor to control the rotation speed and synchronous feeding of the main shaft, thereby completing tapping processing.
At present, the two tapping machines on the market can only perform tapping processing of M3 and above, and during the tapping processing with the diameter below M5, the phenomenon of screw cone breakage often occurs due to the limitation of the performance of the tapping machine and the operation level of processing personnel. When a workpiece is machined in the machining industry, tapping is generally the last process of machining, and if a thread cone is broken, the workpiece is directly scrapped or repaired. Therefore, the production cost is increased and the loss is caused to enterprises.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a small-diameter screw tap electric tapping system, aiming at solving the problem that the screw tap is frequently broken due to the limitation of the performance of a tapping machine and the operation level of processing personnel in the prior art.
The technical scheme provided by the invention is as follows: the utility model provides an electronic tapping system of minor diameter screw tap, includes torque detection device, singlechip and disconnected awl protection device, wherein:
the torque detection device is arranged on the screw tap body, is in communication connection with the single chip microcomputer, and is used for detecting the screw tap torque in the tapping process of the screw tap and sending a detected torque signal of the screw tap to the single chip microcomputer;
the single chip microcomputer is connected with the cone breaking protection device and used for receiving a torque signal sent by the torque detection device, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value or not, and sending a cone breaking protection instruction to the cone breaking protection device when the torque signal is detected to be greater than or equal to the preset upper limit value;
and the cone breaking protection device is used for receiving a cone breaking protection instruction sent by the singlechip and executing cone breaking protection action according to the cone breaking protection instruction.
As an improved scheme, the system also comprises a touch screen connected with the singlechip;
the touch screen is used for receiving tapping parameters input by a user, and the tapping parameters comprise thread diameter, thread pitch, thread depth and revolution distance.
As a modification, the torque detection means includes a torque sensor and an AD converter;
the torque sensor is arranged on the screw tap body and connected with the AD converter, and the torque sensor is used for collecting the torque of the screw tap and transmitting collected torque signals to the single chip microcomputer through analog-to-digital conversion of the AD converter.
As an improved scheme, the broken cone protection device comprises a servo motor driver and a servo motor;
the servo motor driver is used for sending a rotation instruction to the servo motor according to the cone breaking protection instruction;
and the servo motor is used for controlling the screw tap to rotate according to the rotation instruction.
As an improved scheme, the single chip microcomputer comprises:
the torque signal receiving module is used for receiving a torque signal sent by the torque detection device;
the upper limit value judging module is used for analyzing the torque signal and judging whether the torque signal is greater than or equal to a preset upper limit value;
and the broken cone protection instruction sending module is used for sending a broken cone protection instruction to the broken cone protection device when the torque signal is detected to be greater than or equal to a preset upper limit value.
As an improvement, the working modes of the small-diameter tap electric tapping system comprise a manual working mode and an automatic working mode.
As an improved scheme, in the manual working mode, the touch screen receives tapping parameters input by a user;
after the tapping parameters are received, the torque sensor collects torque signals in a manual tapping process in real time and transmits the collected torque signals to the AD converter;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module sends a cone breaking protection instruction to the cone breaking protection device;
the servo motor driver drives the servo motor to drive the screw tap to rotate for a preset rotation distance.
As an improved scheme, in the automatic working mode, the touch screen receives tapping parameters input by a user;
after the tapping parameters are received, the torque sensor collects torque signals in the automatic tapping process in real time and transmits the collected torque signals to the AD converter;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module sends a cone breaking protection instruction to the cone breaking protection device;
the servo motor driver drives the servo motor to drive the screw tap to rotate for a preset rotation distance.
As an improved scheme, the tap body comprises a flange speed reducer connected with the servo motor;
the flange speed reducer is connected with the torque sensor through a coupler, and the output end of the torque sensor drives tapping.
As an improved scheme, the model of the single chip microcomputer is STC89C52, and the model of the AD converter is AD 7190.
In the embodiment of the invention, the small-diameter screw tap electric tapping system comprises a torque detection device, a single chip microcomputer and a broken tap protection device, wherein the torque detection device is installed on a screw tap body, is in communication connection with the single chip microcomputer, is used for carrying out screw tap torque detection on the tapping process of a screw tap, and sends a detected torque signal of the screw tap to the single chip microcomputer; the single chip microcomputer is connected with the cone breaking protection device and used for receiving the torque signal sent by the torque detection device, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value or not, and sending a cone breaking protection instruction to the cone breaking protection device when the torque signal is detected to be greater than or equal to the preset upper limit value; and the broken cone protection device is used for receiving the broken cone protection instruction sent by the single chip microcomputer and executing broken cone protection action according to the broken cone protection instruction, so that the problem that a cone is easily broken during tapping of the screw tap is solved, the yield of processed workpieces is improved, and the cost and the loss are reduced.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 and 2 are block diagrams illustrating the construction of a small-diameter tap electric tapping system according to the present invention;
FIG. 3 is a block diagram of the structure of the single chip provided by the invention;
FIG. 4 is an exploded assembly view of the tap body provided by the present invention;
the device comprises a torque detection device 1, a singlechip 2, a cone breaking protection device 3, a touch screen 4, a torque sensor 5, an AD converter 6, a servo motor driver 7, a servo motor 8, a torque signal receiving module 9, a torque signal receiving module 10, a cone breaking protection instruction sending module 11, a flange speed reducer 12, a tapping 13 and a coupling 14.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Fig. 1 is a block diagram of a small-diameter tap electric tapping system according to the present invention, and for convenience of explanation, only the parts related to the embodiment of the present invention are shown in the drawing.
Electronic tapping system of minor diameter screw tap includes torque detection device 1, singlechip 2 and disconnected awl protection device 3, wherein:
the torque detection device 1 is installed on the screw tap body, is in communication connection with the single chip microcomputer 2, and is used for detecting the screw tap torque in the tapping process of the screw tap and sending a detected torque signal of the screw tap to the single chip microcomputer 2;
the single chip microcomputer 2 is connected with the cone breaking protection device 3 and is used for receiving a torque signal sent by the torque detection device 1, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value, and sending a cone breaking protection instruction to the cone breaking protection device 3 when the torque signal is detected to be greater than or equal to the preset upper limit value;
and the cone breaking protection device 3 is used for receiving the cone breaking protection instruction sent by the singlechip 2 and executing cone breaking protection action according to the cone breaking protection instruction.
In this embodiment, as shown in fig. 2, the system further includes a touch screen 4 connected to the single chip microcomputer 2;
the touch screen 4 is used for receiving tapping parameters input by a user, and the tapping parameters comprise thread diameter, thread pitch, thread depth and revolution distance;
wherein, human-computer interaction is realized in this setting of touch-sensitive screen 4, and operating personnel can set up corresponding tapping parameter through touch-sensitive screen 4 promptly and realize control and control to the tapping process, realizes safe tapping operation.
In the embodiment of the present invention, as shown in fig. 2, the torque detection device 1 includes a torque sensor 5 and an AD converter 6;
the torque sensor 5 is arranged on the screw tap body and connected with the AD converter 6, and the torque sensor 6 is used for collecting the torque of the screw tap and transmitting collected torque signals to the single chip microcomputer 2 through analog-to-digital conversion of the AD converter 6.
The broken cone protection device 3 comprises a servo motor driver 7 and a servo motor 8;
the servo motor driver 7 is used for sending a rotation instruction to the servo motor according to the cone breaking protection instruction;
and the servo motor is used for controlling the screw tap to rotate according to the rotation instruction.
As shown in fig. 3, the single chip microcomputer 2 includes:
a torque signal receiving module 9, configured to receive a torque signal sent by the torque detection device 1;
an upper limit value judging module 10, configured to analyze the torque signal and judge whether the torque signal is greater than or equal to a preset upper limit value;
and the broken cone protection instruction sending module 11 is configured to send a broken cone protection instruction to the broken cone protection device 3 when it is detected that the torque signal is greater than or equal to a preset upper limit value.
In this embodiment, the single chip microcomputer 2 further includes other functional modules, which are not described herein again.
In an embodiment of the present invention, the operation modes of the small-diameter tap electric tapping system include a manual operation mode and an automatic operation mode, wherein:
(1) in the manual working mode, the touch screen 4 receives tapping parameters input by a user;
after receiving the tapping parameters, the torque sensor 5 collects torque signals in a manual tapping process in real time and transmits the collected torque signals to the AD converter 6;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module 11 sends a cone breaking protection instruction to the cone breaking protection device 3;
the servo motor driver 7 drives the servo motor 8 to drive the screw tap to rotate for a preset rotation distance;
(2) in the automatic working mode, the touch screen 4 receives tapping parameters input by a user;
after receiving the tapping parameters, the torque sensor 5 collects torque signals in the automatic tapping process in real time and transmits the collected torque signals to the AD converter 6;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module 11 sends a cone breaking protection instruction to the cone breaking protection device 3;
the servo motor driver 7 drives the servo motor 8 to drive the screw tap to rotate for a preset rotation distance.
In the embodiment of the invention, as shown in fig. 4, the tap body comprises a flange speed reducer 12 connected with the servo motor 8;
the flange speed reducer 12 is connected with the torque sensor 5 through a coupler 14, and the output end of the torque sensor 5 drives a tapping 13;
of course, the tap body further includes other structures, such as a motor adapter block, a rocker arm fixing adapter block, a collet, a snap spring, a bearing, and the like, which are not described herein again.
In this embodiment, the model of the single chip microcomputer 2 is STC89C52, and the model of the AD converter 6 is AD 7190; the torque of the servo motor 8 with 400W alternating current is 1.3n.m, the reduction ratio of the planetary reducer is 1:50 (three-stage transmission), and the transmission coefficient is 90%, so that the output torque of the system is 1.3NM 50 × 90% 58.5n.m, and the system can realize tapping of the maximum M12 threads (the minimum tapping torque of the M12 tap is 11.3 n.m).
The small-diameter tap electric tapping system adopts a 50N.m torque sensor 5, the output sensitivity is 2mv/V, the driving voltage is 5V, the full-scale output voltage of the torque sensor 5 is 5V by 2mv/V by 10mv, the differential signal outputted from the torque sensor 5 is filtered and then sent to the AD converter 6 for AD conversion, the highest GAN of the AD converter 6 is 128, the highest resolution without noise is 22.5 bits, the highest torque resolution achievable by the small diameter tap electric tapping system is 50 NM/4194303 ≈ 0.00001192n.m, the M1 tap minimum torque is 0.04n.m in national standard, and this highest resolution is meaningless for the minimum tapping M1 thread for which the present small diameter tap electric tapping system is designed, so the present small diameter tap electric tapping system AD converter 6 employs a 12-bit resolution, the torque highest resolution of the present small-diameter tap electric tapping system is set to 0.01 n.m. The conversion rate of the AD converter 6 adopted by the small-diameter tap electric tapping system is 2.4KHz, and the AD conversion time of the small-diameter tap electric tapping system is 1000000us/2400HZ 417 us/times. During this time (417us), the small diameter tap electric tapping system outputs a maximum angle of 417us 0.00036 0.15 °. By carrying out repeated tests on the small-diameter screw tap electric tapping system, the output angle of the tapping machine can ensure that the screw tap cannot break off at the conversion rate, and the parameters can meet the working condition that the highest rotating speed of a servo motor 8 is 3000 rpm.
The torque detection highest resolution of the small-diameter tap electric tapping system is 0.01N.m, the maximum output angle in the system detection conversion time is 0.15 degrees, and other parameters can ensure that the system can realize torque detection and broken tap protection during the tapping processing of the small-diameter tap of M1-M5.
In the embodiment of the invention, the small-diameter screw tap electric tapping system comprises a torque detection device 1, a single chip microcomputer 2 and a broken screw tap protection device 3, wherein the torque detection device 1 is installed on a screw tap body, is in communication connection with the single chip microcomputer 2, is used for detecting the screw tap torque in the tapping process of a screw tap, and sends a detected torque signal of the screw tap to the single chip microcomputer 2; the single chip microcomputer 2 is connected with the cone breaking protection device 3 and is used for receiving a torque signal sent by the torque detection device 1, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value or not, and sending a cone breaking protection instruction to the cone breaking protection device 3 when the torque signal is detected to be greater than or equal to the preset upper limit value; and the broken cone protection device 3 is used for receiving the broken cone protection instruction sent by the singlechip 2 and executing broken cone protection action according to the broken cone protection instruction, so that the problem that a cone is easily broken during tapping of a screw tap is solved, the yield of processed workpieces is improved, and the cost and the loss are reduced.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (3)
1. The utility model provides an electronic tapping system of minor diameter screw tap which characterized in that, includes torque detection device, singlechip and disconnected awl protection device, wherein:
the torque detection device is arranged on the screw tap body, is in communication connection with the single chip microcomputer, and is used for detecting the screw tap torque in the tapping process of the screw tap and sending a detected torque signal of the screw tap to the single chip microcomputer;
the single chip microcomputer is connected with the cone breaking protection device and used for receiving a torque signal sent by the torque detection device, analyzing the torque signal, judging whether the torque signal is greater than or equal to a preset upper limit value or not, and sending a cone breaking protection instruction to the cone breaking protection device when the torque signal is detected to be greater than or equal to the preset upper limit value;
the cone breaking protection device is used for receiving a cone breaking protection instruction sent by the single chip microcomputer and executing cone breaking protection action according to the cone breaking protection instruction;
the system also comprises a touch screen connected with the singlechip;
the touch screen is used for receiving tapping parameters input by a user, and the tapping parameters comprise thread diameter, thread pitch, thread depth and revolution distance;
the torque detection device comprises a torque sensor and an AD converter;
the torque sensor is arranged on the screw tap body and connected with the AD converter, and is used for collecting torque of the screw tap and transmitting collected torque signals to the single chip microcomputer through analog-to-digital conversion of the AD converter;
the broken cone protection device comprises a servo motor driver and a servo motor;
the servo motor driver is used for sending a rotation instruction to the servo motor according to the cone breaking protection instruction;
the servo motor is used for controlling the screw tap to rotate according to the rotation instruction;
the singlechip includes:
the torque signal receiving module is used for receiving a torque signal sent by the torque detection device;
the upper limit value judging module is used for analyzing the torque signal and judging whether the torque signal is greater than or equal to a preset upper limit value;
the cone breaking protection instruction sending module is used for sending a cone breaking protection instruction to the cone breaking protection device when the torque signal is detected to be greater than or equal to a preset upper limit value;
the working modes of the small-diameter tap electric tapping system comprise a manual working mode and an automatic working mode;
in the manual working mode, the touch screen receives tapping parameters input by a user;
after the tapping parameters are received, the torque sensor collects torque signals in a manual tapping process in real time and transmits the collected torque signals to the AD converter;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module sends a cone breaking protection instruction to the cone breaking protection device;
the servo motor driver drives the servo motor to drive the screw tap to rotate for a preset rotation distance;
in the automatic working mode, the touch screen receives tapping parameters input by a user;
after the tapping parameters are received, the torque sensor collects torque signals in the automatic tapping process in real time and transmits the collected torque signals to the AD converter;
when the upper limit value judgment module judges that the torque signal is greater than or equal to a preset upper limit value, the cone breaking protection instruction sending module sends a cone breaking protection instruction to the cone breaking protection device;
the servo motor driver drives the servo motor to drive the screw tap to rotate for a preset rotation distance.
2. The small diameter tap power tapping system according to claim 1, wherein the tap body includes a flange reducer connected to the servo motor;
the flange speed reducer is connected with the torque sensor through a coupler, and the output end of the torque sensor drives tapping.
3. The small-diameter tap electric tapping system according to claim 2, wherein the single chip microcomputer is model STC89C52, and the AD converter is model AD 7190.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772027.8A CN111992820B (en) | 2020-08-04 | 2020-08-04 | Electric tapping system for small-diameter screw tap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772027.8A CN111992820B (en) | 2020-08-04 | 2020-08-04 | Electric tapping system for small-diameter screw tap |
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| Publication Number | Publication Date |
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| CN111992820A CN111992820A (en) | 2020-11-27 |
| CN111992820B true CN111992820B (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3499496A (en) * | 1968-10-07 | 1970-03-10 | Alman H Vieths | Torque transmitting arrangement with axial magnetic bias |
| CN206115199U (en) * | 2016-09-23 | 2017-04-19 | 沈阳工学院 | Vibration tapping machine control system |
| CN206263706U (en) * | 2016-11-11 | 2017-06-20 | 深圳市泰格运控科技有限公司 | A kind of servo tapping machine control system |
| CN108188500A (en) * | 2018-02-02 | 2018-06-22 | 西安理工大学 | Self-tapping apparatus and its tapping method based on torque sensor |
| CN110340459A (en) * | 2019-06-25 | 2019-10-18 | 西安理工大学 | A kind of intelligent apery tapping chuck based on the detection of photoelectric code disk torque |
| CN209565588U (en) * | 2018-12-08 | 2019-11-01 | 深圳市泰格运控科技有限公司 | A kind of no sensitive servo tapping machine system |
-
2020
- 2020-08-04 CN CN202010772027.8A patent/CN111992820B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3499496A (en) * | 1968-10-07 | 1970-03-10 | Alman H Vieths | Torque transmitting arrangement with axial magnetic bias |
| CN206115199U (en) * | 2016-09-23 | 2017-04-19 | 沈阳工学院 | Vibration tapping machine control system |
| CN206263706U (en) * | 2016-11-11 | 2017-06-20 | 深圳市泰格运控科技有限公司 | A kind of servo tapping machine control system |
| CN108188500A (en) * | 2018-02-02 | 2018-06-22 | 西安理工大学 | Self-tapping apparatus and its tapping method based on torque sensor |
| CN209565588U (en) * | 2018-12-08 | 2019-11-01 | 深圳市泰格运控科技有限公司 | A kind of no sensitive servo tapping machine system |
| CN110340459A (en) * | 2019-06-25 | 2019-10-18 | 西安理工大学 | A kind of intelligent apery tapping chuck based on the detection of photoelectric code disk torque |
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| CN111992820A (en) | 2020-11-27 |
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