CN113552436A - Method for detecting assembly quality of small and medium-sized precision mechanical system - Google Patents
Method for detecting assembly quality of small and medium-sized precision mechanical system Download PDFInfo
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- CN113552436A CN113552436A CN202110850779.6A CN202110850779A CN113552436A CN 113552436 A CN113552436 A CN 113552436A CN 202110850779 A CN202110850779 A CN 202110850779A CN 113552436 A CN113552436 A CN 113552436A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a method for detecting the assembly quality of a small and medium-sized precision mechanical system, which comprises a power supply and an AC/DC current clamp, wherein the output end of the power supply is electrically connected with an electrical control system, the electrical control system is connected with the power supply through a power supply serial port line, the output end of the electrical control system is electrically connected with a mechanical structure system, the mechanical structure system is connected with the electrical control system through a control serial port line, the AC/DC current clamp is electrically connected with the control serial port line, the tail end of the AC/DC current clamp is connected with an oscilloscope through a connecting cable, and the oscilloscope is grounded through an anti-interference grounding wire. The method for detecting the assembly quality of the small and medium-sized precision mechanical system is based on current monitoring of the AC/DC current clamp and the oscilloscope, is strong in operability and easy to realize, and solves the problem that the mechanical structure assembly needs to be based on the experience of workers, so that the requirement on the skill quality of product assembly workers is reduced, and the product assembly quality is effectively improved.
Description
Technical Field
The invention relates to the technical field of precision machinery, in particular to a method for detecting the assembly quality of a small and medium-sized precision mechanical system.
Background
The mechanical system is the most basic element of the mechatronic system, and is mainly used for an actuating mechanism, a transmission mechanism and a supporting part to complete specified actions, transmit power, motion and information, support and connect related parts and the like, and the mechanical system is usually an organic component of a microcomputer control servo system, so that when the mechanical system is designed, besides general mechanical design requirements, matching of mechanical structure factors and performance parameters and electrical parameters of the whole servo system must be considered to obtain good servo performance, and the assembly technology of mechanical system assembly workers is personal and is never transmitted.
In the existing precision machinery, the assembly precision of a product has high requirements on the experience of an assembler, so that a new assembler needs to search for the product assembly from the beginning, and great influence is generated on the product precision, the product quality and the production period of the product.
Disclosure of Invention
The invention aims to provide a method for detecting the assembly quality of a small and medium-sized precision machine system, which aims to solve the problems that in a general precision machine provided in the background art, the assembly precision of a product has high requirements on the experience of an assembly worker, so that a new assembly worker needs to search for the assembly of the product from the beginning, and great influences are generated on the product precision, the product quality and the production period of the product, meanwhile, the product quality can be known only after the new assembly worker finally completes the test, and if the product has assembly differences and the product precision and the performance of the product are not consistent, the product needs to be disassembled again, and the production period is seriously influenced.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a middle-size and small-size precision machinery system assembly quality detection method, includes power and alternating current-direct current pincers, the output electric connection of power has electrical control system, and electrical control system is connected with the power through power supply serial port line, electrical control system's output electric connection has mechanical structure system, and mechanical structure system is connected with electrical control system through control serial port line, be electric connection between alternating current-direct current pincers and the control serial port line, alternating current-direct current pincers's end is connected with the oscilloscope through connecting the cable, and the oscilloscope carries out ground connection through anti-interference earth connection and handles, the inboard of control serial port line is provided with negative pole line and positive pole line, alternating current-direct current pincers include the clamping jaw, and are electric connection between clamping jaw and negative pole line, the positive pole line.
Preferably, the detection method comprises the following specific steps: monitoring the AC/DC current clamp → judging according to the composition of the mechanical structure → adjusting the mechanical structure, and the monitoring of the AC/DC current clamp comprises the following specific steps: the positive pole line or the negative pole line in the control serial port line is clamped manually through the AC/DC current clamp, the data line of the AC/DC current clamp is connected to the oscilloscope, the assembled mechanism is connected with a power supply, the AC/DC current clamp is used for clamping the positive pole line or the negative pole line in the control serial port line of the electrical control system, the data line of the AC/DC current clamp is connected with the oscilloscope, corresponding parameters are input, the power supply works, and the current curve of the oscilloscope is checked.
Preferably, the alternating current/direct current clamp monitoring method is based on a current detection mode and is determined according to the structural form of a mechanical system.
Preferably, the current curve of the product which is well assembled in the judging procedure according to the mechanical structure composition needs to be monitored through a plurality of sets of products, the working condition of the product and the running sound condition are compared and analyzed, the working current curve of the normal product is obtained, and the working current curve is compared and analyzed with the theoretical current curve.
Preferably, the mechanical structure is adjusted on the premise that the current curve differences correspond to one another on the mechanical structure, the curve differences correspond to different product structure assembly problems, and after data are accumulated for multiple times, the current curve differences can be directly positioned at corresponding positions on the structural member according to different curve types.
Preferably, the theoretical current curve is that the current curve is a stable straight line without any obvious fluctuation when no special working process exists, and the theoretical current curve is also consistent with the design when the special working process exists.
Preferably, the product structure assembly problem is the quality of an outer member of the mechanical structure and the assembly quality of the parts, wherein the quality of the outer member is mainly determined by the detection of the outer member, and the assembly quality of the parts is mainly the shaft system assembly, the transmission part and the positions of the parts with the matching relationship.
Preferably, the product working condition is a product working state condition, the state condition of the product can be judged through the electrical control system, the running sound condition is the sound of the product during working, and whether the product works normally is judged through sound change.
Compared with the prior art, the invention has the beneficial effects that: the current monitoring is carried out based on the AC/DC current clamp and the oscilloscope, the operability is strong, the realization is easy, and the problem that the mechanical structure assembly needs to be carried out according to the experience of workers is solved, so that the requirement on the skill quality of product assembly workers is reduced, and the product assembly quality is effectively improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of the connection structure of the AC/DC current clamp and the control serial port line according to the present invention.
Illustration of the drawings:
1. a power source; 2. an electrical control system; 3. controlling the serial port line; 4. a mechanical structure system; 5. an anti-interference grounding wire; 6. an oscilloscope; 7. AC/DC current clamp; 8. a power supply serial port line; 9. a clamping jaw; 10. a negative electrode line; 11. and a positive electrode wire.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: the method for detecting the assembly quality of the small and medium-sized precision mechanical system comprises a power supply 1 and an alternating current/direct current clamp 7, wherein the output end of the power supply 1 is electrically connected with an electrical control system 2, the electrical control system 2 is connected with the power supply 1 through a power supply serial port line 8, the output end of the electrical control system 2 is electrically connected with a mechanical structure system 4, the mechanical structure system 4 is connected with the electrical control system 2 through a control serial port line 3, the alternating current/direct current clamp 7 is electrically connected with the control serial port line 3, the tail end of the alternating current/direct current clamp 7 is connected with an oscilloscope 6 through a connecting cable, the oscilloscope 6 is subjected to grounding treatment through an anti-interference grounding wire 5, a negative wire 10 and a positive wire 11 are arranged on the inner side of the control serial port line 3, the alternating current/direct current clamp 7 comprises a clamping jaw 9, and the clamping jaw 9 is electrically connected with the negative wire 10 and the positive wire 11.
Further, the detection method comprises the following specific steps: monitoring the AC/DC current clamp → judging according to the mechanical structure composition → adjusting the mechanical structure, the monitoring of the AC/DC current clamp comprises the following specific steps: the positive electrode line 11 or the negative electrode line 10 in the control serial port line 3 is manually clamped through the AC/DC current clamp 7, the data line of the AC/DC current clamp 7 is connected to the oscilloscope 6, the assembled mechanism is connected to the power supply 1, the AC/DC current clamp 7 is used for clamping the positive electrode line 11 or the negative electrode line 10 in the control serial port line 3 of the electrical control system 2, the data line of the AC/DC current clamp 7 is connected to the oscilloscope 6, corresponding parameters are input, the power supply 1 performs power supply work, and the current curve of the oscilloscope 6 is checked.
Furthermore, the AC/DC current clamp monitoring method is based on a current detection mode and is determined according to the structural form of a mechanical system.
Furthermore, according to the mechanical structure composition, the working current curve of a product which is well assembled in the judging procedure needs to be monitored through a plurality of sets of products, the working condition of the product and the running sound condition are synthesized and contrasted and analyzed, the working current curve of a normal product is obtained, and the working current curve is contrasted and analyzed with the theoretical current curve.
Furthermore, the mechanical structure is adjusted on the premise that the current curve difference positions correspond to the mechanical structure one by one, the curve difference positions correspond to different product structure assembly problems, and after data are accumulated for many times, the current curve difference positions can be directly positioned to corresponding positions on the structural part according to different curve types.
Further, the theoretical current curve is that the current curve is a stable straight line without any obvious fluctuation when no special working process exists, and the theoretical current curve is also consistent with the design when the special working process exists.
Further, the assembly problem of the product structure is the quality of an outer member of the mechanical structure and the assembly quality of parts, wherein the quality of the outer member is mainly determined by the detection of the outer member, and the assembly quality of the parts is mainly the shaft system assembly, the transmission part and other positions with matching relations.
Further, the product working condition is the product working state condition, the state condition of the product can be judged through the electric control system, the running sound condition is the sound of the product during working, and whether the product works normally is judged through the sound change.
Example 1
The power supply 1 is connected with the electrical control system 2 through a power supply serial port line 8, the electrical control system 2 is connected with the mechanical structure system 4 through a control serial port line 3, the control of the electrical control system 2 on the mechanical structure system 4 is realized, an AC/DC current clamp 7 clamps a positive electrode line 11 or a negative electrode line 10 in the control serial port line 3, a data line of the AC/DC current clamp 7 is connected with an oscilloscope 6, the assembled mechanism is connected with the power supply 1, the AC/DC current clamp 7 clamps the positive electrode line 11 or the negative electrode line 10 in the control serial port line 3 of the electrical control system 2, the data line of the AC/DC current clamp 7 is connected with the oscilloscope 6, the shell of the oscilloscope 6 is connected with an anti-interference grounding wire 5, the working current of the mechanism during working is 0.1A, the working time of the mechanism is 3s, the display precision of the oscilloscope 6 is adjusted to be 20mV/div and 500ms/div, wherein the precision of the AC/DC current clamp 7 is 100 mA/V; and electrifying to work, checking the current curve of the oscilloscope 6, and confirming through a plurality of groups of product working current curves to obtain that the current curve is a stable straight line of 0.1A except the starting and stopping moments when the mechanism works in a rising mode.
Example 2
The power supply 1 and the electrical control system 2 are connected together through a power supply serial port line 8, the electrical control system 2 is connected with the mechanical structure system 4 through a control serial port line 3, the control of the electrical control system 2 on the mechanical structure system 4 is realized, an AC/DC current clamp 7 clamps a positive electrode line 11 or a negative electrode line 10 in the control serial port line 3, a data line of the AC/DC current clamp 7 is connected to an oscilloscope 6, when other products are tested, the mechanism is connected with the power supply 1, the working current of the mechanism during working is also adjusted to be 0.1A, the working time of the mechanism is 3s, the display precision of the oscilloscope 6 is adjusted to be 20mV/div and 500ms/div, and the precision of the AC/DC current clamp 7 is 100 mA/V; the circular telegram is worked, looks over oscilloscope 6's current curve, if the working current curve appears not steady, then judge that there is the defect for product assembly quality, little fluctuation about the curve appears repeatedly, its average line is the straight line condition, then judges that the assembly of product motor is not to the center, shake when leading to the product motion, can judge simultaneously that the product motor rotates sound through sound and have the shake, consequently when this condition appears, but direct positioning motor installation is unsuitable, the motor position of resetting can. Thus, the product assembly quality detection can be completed.
The invention relates to a method for detecting the assembly quality of a small and medium-sized precision mechanical system, which comprises the steps of firstly opening an AC/DC current clamp 7 to clamp a positive electrode line 11 or a negative electrode line 10 of a control serial port line 3 of an electrical control system 2 through a clamping jaw 9, connecting the AC/DC current clamp 7 with an oscilloscope 6, adjusting adaptive voltage display and time display, controlling the mechanical structure 4 system to work by the electrical control system 2, obtaining a group of current curves of well-assembled products after a plurality of sets of products work, comparing the current curves of other products after monitoring the current curves with the normal product curves, checking the difference of the current curves, mapping the current curve positions to corresponding links of mechanical structure movement according to the difference, checking the related parts of the links in a targeted manner, directly positioning the parts on a structural member according to different curve types after accumulating data for a plurality of times, and then the structural member at the position is directly adjusted to match.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for detecting the assembly quality of small and medium-sized precision mechanical systems is characterized by comprising the following steps: the device comprises a power supply (1) and an alternating current and direct current clamp (7), wherein the output end of the power supply (1) is electrically connected with an electrical control system (2), the electrical control system (2) is connected with the power supply (1) through a power supply serial port line (8), the output end of the electrical control system (2) is electrically connected with a mechanical structure system (4), the mechanical structure system (4) is connected with the electrical control system (2) through a control serial port line (3), the alternating current and direct current clamp (7) is electrically connected with the control serial port line (3), the tail end of the alternating current and direct current clamp (7) is connected with an oscilloscope (6) through a connecting cable, the oscilloscope (6) is grounded through an anti-interference grounding wire (5), a negative wire (10) and a positive wire (11) are arranged on the inner side of the control serial port line (3), and the alternating current and direct current clamp (7) comprises a clamping jaw (9), and the clamping jaw (9) is electrically connected with the negative electrode wire (10) and the positive electrode wire (11).
2. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 1, which is characterized in that: the detection method comprises the following specific steps: monitoring the AC/DC current clamp → judging according to the composition of the mechanical structure → adjusting the mechanical structure, and the monitoring of the AC/DC current clamp comprises the following specific steps: a positive electrode line (11) or a negative electrode line (10) in a control serial port line (3) is manually clamped through an alternating current and direct current clamp (7), a data line of the alternating current and direct current clamp (7) is connected to an oscilloscope (6), an assembled mechanism is connected with a power supply (1), the positive electrode line (11) or the negative electrode line (10) in the control serial port line (3) of an electrical control system (2) of the mechanism is clamped through the alternating current and direct current clamp (7), the data line of the alternating current and direct current clamp (7) is connected with the oscilloscope (6) and corresponding parameters are input, power supply work is carried out through the power supply (1), and a current curve of the oscilloscope (6) is checked.
3. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 2, which is characterized in that: the alternating current and direct current clamp monitoring method is based on a current detection mode and is determined according to the structural form of a mechanical system.
4. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 2, which is characterized in that: the current curve of a product which is well assembled in the judging procedure according to the mechanical structure composition needs to be monitored through a plurality of sets of products, the working condition of the product and the running sound condition are synthesized and contrasted and analyzed, the working current curve of a normal product is obtained, and the working current curve is contrasted and analyzed with the theoretical current curve.
5. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 2, which is characterized in that: the premise of adjusting the mechanical structure is that the current curve difference positions correspond to the mechanical structure one by one, the curve difference positions correspond to different product structure assembly problems, and after data are accumulated for many times, the current curve difference positions can be directly positioned to corresponding positions on the structural part according to different curve types.
6. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 4, characterized in that: the theoretical current curve is that when no special working process exists, the current curve is a stable straight line without any obvious fluctuation, and the theoretical current curve also conforms to the design during the special working process.
7. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 5, characterized in that: the method is characterized in that: the product structure assembly problem lies in the quality of an outer component of a mechanical structure and the assembly quality of parts, wherein the quality of the outer component is mainly determined by the detection of the outer component, and the assembly quality of the parts is mainly the position of shafting assembly, a transmission part and other parts with a matching relation.
8. The method for detecting the assembly quality of the small and medium-sized precision mechanical system according to claim 4, characterized in that: the product operating condition is a product operating state condition, the state condition of the product can be judged through the electrical control system, the running sound condition is the sound of the product during operation, and whether the product operates normally is judged through sound change.
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Application publication date: 20211026 |