CN114018572B - Preassembly quality detection system and detection method suitable for industrial Internet of things manufacturing - Google Patents
Preassembly quality detection system and detection method suitable for industrial Internet of things manufacturing Download PDFInfo
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- CN114018572B CN114018572B CN202111307727.0A CN202111307727A CN114018572B CN 114018572 B CN114018572 B CN 114018572B CN 202111307727 A CN202111307727 A CN 202111307727A CN 114018572 B CN114018572 B CN 114018572B
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a preassembly quality detection system and a detection method suitable for industrial Internet of things manufacturing, wherein the detection system comprises a transmission mechanism for transmitting a reducer shell; a jig mounted on the transfer mechanism; the jig is provided with a shaft hole for accommodating the gear shaft, the opening of the shaft hole faces upwards, and the depth of the shaft hole is smaller than the length of the gear shaft; the device also comprises a shaft detection device for detecting the preassembly quality of the gear shaft on the jig; the number of the shaft holes on the jig is multiple; the number of the jigs is multiple, and the jigs are distributed at equal intervals along the transmission track of the jigs; the number of the shaft detecting devices is greater than one. The detection method is a use method of the detection system. By adopting the technical scheme provided by the scheme, the efficient intelligent manufacturing of the speed reducer is realized.
Description
Technical Field
The invention relates to the technical field of assembly of speed reducers, in particular to a preassembly quality detection system and method suitable for manufacturing of industrial Internet of things.
Background
With the continuous improvement of sensing technology, control technology, informatization technology, processing technology and assembly technology, intelligent and automatic assembly line becomes an important production mode in industry.
Taking the Internet of things intelligent gas system and the Internet of things intelligent water service system as examples, the intelligent gas system and the intelligent water service system are well integrated into the construction of the intelligent city. The intelligent gas meter and the water meter of the Internet of things are taken as important components of the system, and are different from the traditional metering components, and a power system is required to be built in a specific design to match management control requirements. In the design of the corresponding meter body, the applicant previously proposes a scheme of an electromechanical valve of a gas meter, as described in application number CN201220463732.0, in the scheme, a power system which adopts a motor as a power source, uses a gearbox comprising a multistage gear and then uses the power output by the motor as the power for driving a sealing ring cap to linearly move through an incomplete gear and the like is provided, and the problems of electromechanical valve area, locked rotor, reliability, response speed and the like can be effectively solved by adopting the scheme.
The gearbox is an important part in the above table body, and because the gearbox adopts a multistage transmission working mode in structural design, relatively complicated procedures are the assembly of a gear shaft and the assembly of a gear in the assembly process of the gearbox. According to the technical scheme provided by the application number CN201610776524.9, the problems that the manual assembly of the gear shaft is difficult to assemble, human body discomfort is easy to cause, production efficiency is low and the like are solved, the gear shaft is conveyed to the through hole of the fixed block by utilizing the conveying track to convey the water meter shell and utilizing the vibrating disk to be matched with the hose to output the gear shaft, and then the gear shaft is positioned on the water meter shell in a jacking mode. Meanwhile, a gear shaft detection device comprising an elastic contact is arranged in the working procedure, so that whether the gear shaft is qualified or not is checked. Namely, in the scheme, the method particularly relates to a gear shaft specific assembly method and a structural foundation corresponding to the method.
The intelligent manufacturing process and equipment for the gas meter and the water meter speed reducer have important promotion significance to the development of industries.
Disclosure of Invention
Aiming at the technical problems that the intelligent manufacturing process and corresponding equipment of the speed reducer for the gas meter and the water meter can be realized and the important promotion significance is certainly provided for the development of the industry, the invention provides a preassembly quality detection system and a detection method suitable for the manufacturing of the industrial Internet of things. By adopting the technical scheme provided by the scheme, the efficient intelligent manufacturing of the speed reducer is realized.
Aiming at the problems, the preassembly quality detection system and the preassembly quality detection method suitable for industrial Internet of things manufacturing solve the problems through the following technical points: the preassembly quality detection system suitable for the industrial Internet of things manufacturing comprises a transmission mechanism for transmitting a speed reducer shell;
a jig mounted on the transfer mechanism;
the jig is provided with a shaft hole for accommodating the gear shaft, the opening of the shaft hole faces upwards, and the depth of the shaft hole is smaller than the length of the gear shaft;
the device also comprises a shaft detection device for detecting the preassembly quality of the gear shaft on the jig;
The number of the shaft holes on the jig is multiple;
the number of the jigs is multiple, and the jigs are distributed at equal intervals along the transmission track of the jigs;
the number of the shaft detection devices is greater than one, detection areas corresponding to the shaft detection devices are distributed at intervals along the transmission track of the jig, and the jig can stay as follows under the action of the transmission mechanism: each shaft detection device is provided with a jig in a detection area, and different jigs are positioned in different detection areas.
In the prior art, as described in the technical scheme provided by application number CN201610776524.9, a specific assembly method of the gear shaft and a structural foundation corresponding to the method are provided in the specific technical scheme, and meanwhile, in the specific assembly method and the structural foundation, a gear shaft preassembly quality detection station based on an elastic contact is included.
In the prior art, the industrial Internet of things technology is continuously integrated into various links of industrial production by the advantages of effectively improving the manufacturing efficiency, improving the product quality, reducing the manufacturing cost and the resource consumption and the like. Among key technologies of the industrial Internet of things, the key technologies comprise a perception control technology, a sensing communication technology, a network technology, a management platform system integration technology, an information processing technology, a cloud platform technology, an information security technology and the like, wherein the perception control technology can be regarded as the front end or the bottom layer of the whole industrial Internet of things, various devices of the perception control layer are in communication connection with the management platform through the sensing communication technology, and the management platform is used for transmitting collected data and executing action instructions. Therefore, the specific assembly process design of the speed reducer by taking the perception control layer as a supporting body is one of key technologies for realizing the assembly intellectualization of the speed reducer. The technical scheme is provided by considering the problems of improving the preassembling efficiency and preassembling quality of the gear shaft.
Specifically, the shaft hole is used for holding the gear shaft, and the hole depth that sets up to the shaft hole is less than the length of gear shaft, the opening in shaft hole up, aims at making the gear shaft of accomplishing the pre-installation can hold in the shaft hole with the upper end for the form of shaft hole evagination, like this, when transferring the gear shaft casing to accomplish the gear shaft assembly, the reduction gear casing can be for the mode of tool along gear shaft axis direction motion in opposite directions, accomplishes the cooperation of gear shaft and the last gear shaft mounting hole of reduction gear casing.
The quantity of shaft hole is a plurality of on the tool for realize: after the gear shafts are preassembled at a time, the assembly of a plurality of gear shafts can be synchronously or distributed, and meanwhile, the problem that a clamp and the gear shafts are interfered possibly due to the fact that a single gear shaft is clamped by a traditional clamp to be installed is solved.
The quantity that sets up to the tool is a plurality of, and the tool is arranged along the transmission orbit equidistance interval of tool, aims at realizing: under the effect of transfer mechanism, after the tool is once transferred by the equidistance between the station, each tool can all correspond with the position of next operation station to the intelligent assembly of reduction gear is realized.
The number of the shaft detection devices is greater than one, the detection areas corresponding to the shaft detection devices are distributed at intervals along the transmission track of the jig, and the jig can stay as follows under the action of the transmission mechanism: each shaft detection device's detection area is interior to have a tool, and different tools are in different detection areas, aim at taking into account the required time of single gear shaft preassembly detection to optimize the required time difference of each process in the assembly process, reach the purpose that realizes the high-efficient assembly of reduction gear: in consideration of automatic assembly of the speed reducer, the gear shaft feeding on the jig, the gear shaft matching with the speed reducer shell, the speed reducer shell matching with the outer gear shaft, the speed reducer shell being removed from the jig and other steps are arranged on different stations, the inner side of the speed reducer for the gas meter and the water meter is generally provided with a large number of gear shafts, such as five gear shafts, when the preassembly quality detection of each gear shaft is realized, the preassembly quality of each gear shaft needs to be detected in consideration of the assembly quality, meanwhile, due to the size problem and the arrangement distance problem of the gear shafts, the system investment cost of a detection means based on image recognition is high and the condition that the result error easily occurs, the specific implementation preferably adopts a contact detection means as mentioned in application number CN201610776524.9, so that the assembly of all gear shafts is realized in a single station, the corresponding elastic contact needs to reciprocate for a plurality of times (only the preassembly quality detection of one gear shaft can be completed once), the time required for completing the detection of all gear shafts is long, and when the preassembly quality detection of each gear shaft needs to be completed in other stations is less than the time required for the preassembly quality detection of each gear shaft, such that the preassembly quality detection is not good for the other stations, and the efficient assembly of the speed reducer is not set in other stations. Adopt the axle detection device setting scheme that this scheme provided, usable in the arbitrary time of tool stay, realize the preassembly time detection of gear shaft on different stations, through dividing whole gear shaft to accomplish the detection on the axle detection device that quantity is greater than one, can shorten tool single stay time, reach the purpose that promotes reduction gear whole assembly efficiency.
More specifically, the existing common speed reducer that includes gear shaft quantity is five, to this kind of gear shaft preassembly quality detection, for coordinating the operating time that needs on other operation stations for each tool is after stopping the motion, accomplishes other operations and its gear shaft preassembly quality detection on in the time of being close, can set up the quantity of axle detection device to two, and adopts: one shaft detection device is used for completing preassembly quality detection of two gear shafts, and the other shaft detection device is used for completing preassembly quality detection of other three gear shafts.
As a person skilled in the art, in the concrete implementation, considering the optimal design of the system, since the number of pre-assembling processes of the gear shaft is large, when the shaft hole is used for accommodating the gear shaft installed inside the gear shaft, according to the concrete process setting, the steps involved in the processes involve the following steps: the gear shaft feeding on the jig, the gear shaft matching with the gear housing, the gear housing matching with the gear shaft on the outer side, the gear housing being removed from the jig, etc., so that the number of jigs to be set is large in order to ensure that each jig stays to any work step operation station in the circulation period to be capable of being correspondingly operated. In this scheme, therefore, the following are mentioned: the different jigs are positioned in different detection areas, preferably all jigs, and when the transmission mechanism transfers the jigs to each operation station, the jigs with the same number as the shaft detection devices are respectively stopped in the detection areas corresponding to the shaft detection devices. The shaft detection device is arranged for the operation station corresponding to each step, so that the detection purpose can be realized; the quantity of the shaft detection device and the shaft holes are consistent, and the detection purpose required by the scheme can be achieved.
As a further technical scheme of the preassembly quality detection system suitable for manufacturing the industrial Internet of things:
as a method for synchronously assembling all gear shafts inside the speed reducer by single opposite movement when the subsequent gear shafts are assembled with the speed reducer shell, the method is as follows: the number of the shaft holes on each jig is consistent with the number of gear shafts required to be installed on the inner side of the speed reducer;
the relative position between the shaft holes on each jig is consistent with the relative position between the gear shafts which are required to be installed on the inner side of the speed reducer.
As described above, since the number of steps is large in the gear shaft assembling process, the number of functional parts to be provided on the whole of the assembling mechanism is large, and considering that the gear shaft assembling of the speed reducer is only one of the processes in the manufacturing process of the speed reducer, as a technical scheme capable of reducing the occupied space of the whole of the assembling mechanism, it is provided that: the transmission mechanism comprises a turntable, and the jig is fixed on the turntable in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable;
the rotating center of the turntable is also provided with a through hole;
the mounting table is supported above the turntable through a bracket, and the through hole is used as a passage for the bracket to pass through the turntable;
The shaft detection device is mounted on the mounting table. In the prior art, the controllable precision of the rotation angle of the transmission mechanism of the turntable is high, and each jig can automatically complete the flow circulation in the rotation process of the turntable. Through setting up to including through-hole, support and mount table for each functional unit including axle detection device can be concentrated relatively and arrange around the carousel and carousel top, thereby reach and avoid adopting traditional functional unit to set up the great problem of requirement carousel size that the arrangement mode brought in the carousel outside. In practice, the shaft detection device is mounted on the mounting table because the shaft detection device does not need to involve material feeding problems. In this way, the space outside the turntable can be used for installing a first feeding device for feeding the gear shaft in the shaft hole, and the first feeding device is positioned at the upstream of the shaft detection device in the jig transmission process; in the whole functional component, the shaft detection devices are adjacently arranged; a second feeding device for feeding the cover body of the speed reducer is arranged at the downstream of the shaft detection device; and a third feeding device for feeding the external gear shaft of the speed reducer shell is arranged at the downstream of the second feeding device. The first feeding device, the second feeding device and the third feeding device can all adopt feeding devices comprising manipulators and clamps, the clamps are used for clamping corresponding materials, the manipulators are used for changing the postures and the positions of the materials, and finally the aim of mutually assembling all the component parts on the speed reducer is achieved.
As a concrete implementation form of the shaft detection device with simple structure, low setting cost and reliable detection result, the shaft detection device is set as follows: the shaft detection device comprises an elastic contact, a moving device for driving the elastic contact to move along the axial direction of the shaft hole, and a detection sensor for detecting the expansion and contraction amount of the elastic contact. In the scheme, the elastic contact is moved by the moving device, and when the situation that the gear shaft is not assembled in place and the length and the size of the gear shaft are wrong, the corresponding detection data of the elastic contact are deviated from the data obtained when the gear shaft is correctly preassembled, so that the preassembling quality of the gear shaft can be obtained through deviation judgment.
As described above, considering that in the assembly process of the speed reducer, the operation time required by the process steps except for the operation station of the shaft detection device is generally longer than the time required by the preassembly quality detection of a single gear shaft, in order to reasonably utilize each shaft detection device, it may be set that a single shaft detection device completes the detection of two or more gear shafts within a retention time period of a jig, as a more perfect setting form of the shaft detection device: the moving device comprises a vertical moving device and a horizontal moving device;
The elastic contact is arranged on the vertical moving device;
the vertical moving device is arranged on the transverse moving device. In the scheme, the vertical moving device is adopted to drive the elastic contact to move along the axis of the gear shaft, so that the preassembly quality detection of the single gear shaft is realized; when the gear shaft preassembly quality to be switched to the next position is detected, the transverse moving device is used for completing the movement of the vertical moving device along the gear shaft spacing direction, so that the detection end of the elastic contact is moved to the top end of the gear shaft opposite to the next position.
In the use process of the elastic contact, because the positive pressure area of the end surfaces of the gear shaft and the elastic contact is smaller (the tips used for guiding are generally arranged at the two ends of the gear shaft), the elastic contact can have partial pressure loss after being used for many times, and the pressure loss surface is not necessarily regular, so that the situation that the detection result is unreliable only when the compression quantity parameter of the elastic contact is reset at the moment is caused, the elastic contact is set as a technical scheme convenient for maintenance of the elastic contact, and the technical scheme is as follows: the front end of the elastic contact is a detection end used for contacting with the end part of the gear shaft;
the detection end is detachably connected to the elastic contact. By adopting the scheme, the detection end of the elastic contact can be replaced in time under the condition of need. When judging the preassembly quality of gear shafts with different lengths, the premise can be that the possibly related gear shafts are matched with detection ends with different lengths, so that the detection system has better universality under the condition that the control center data is not changed according to the detection ends with different lengths.
As a technical scheme which is convenient for completing the installation and the disassembly of the detection end and is beneficial to the installation quality control of the detection end so as to be beneficial to the reliability of the detection result of the system, the detection end is set as follows: the detection end is connected to the elastic contact in a threaded manner;
the elastic contact is also provided with a limiting end face, and the limiting end face is used for: in the process that the detection end is connected to the elastic contact through the rotary thread, positive pressure applied to the detection end is provided through the limiting end face, and the detection end is prevented from further moving along the axial direction of the elastic contact. As a person skilled in the art, the detection end should be a rigid section on the elastic contact, and the detection end is preferably also a rigid section mounted on the elastic contact body, so in this scheme, when the corresponding threaded connection is implemented by adopting the internal threaded blind hole, the hole bottom of the above threaded blind hole and the end face of the external threaded section can be used as the above end faces; meanwhile, the end face can also be a convex end face arranged on the side face of the detection end or the elastic contact body: after the screw thread screwing is completed, the condition that the end face of the external thread section is in contact with the end face of the internal thread hole does not exist, and the corresponding limiting purpose is achieved through the contact between the end face of the internal thread hole and the end face of the protrusion. As a person skilled in the art, the above female screw hole may be provided on the detection end, or may be provided on the elastic contact body.
Under the condition that the gear shaft is detected to be unqualified in preassembly, the gear shaft in all shaft holes can be removed in a purging mode, so that the gear shaft is ready for the next preassembly, and the technical scheme is as follows: the jig is also provided with air channels with outlet ends positioned on the bottoms of the shaft holes, and each shaft hole is matched with the air channel;
the inlet end of the air channel is positioned on the side surface or the bottom surface of the jig.
The scheme also discloses a preassembly quality detection method suitable for industrial Internet of things manufacturing, which is used for detecting the preassembly quality of the gear shaft in the shaft hole on the jig, and is based on the detection system described in any one of the above;
the method comprises the following steps:
through the transfer mechanism, transfer its upper jig to: so that the detection areas of the shaft detection devices are provided with one jig, and different jigs are positioned in different detection areas;
each shaft detection device works to finish preassembling quality detection of the gear shaft on the jig in each detection area. The method provides a technical basis for intelligent assembly of the speed reducer, and can optimize the gear shaft preassembly detection process and improve the assembly efficiency of the speed reducer from the whole process design of the speed reducer assembly.
As a further technical scheme of the preassembly quality detection method suitable for manufacturing the industrial Internet of things:
as a technical scheme which takes a turntable as an index plate, the device can effectively avoid the idle stay of a jig in the rotation period of the turntable with controllable and high controllable precision, and is set as follows: the transmission mechanism comprises a turntable, and the jig is fixed on the turntable in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable;
the transfer is single fixed-angle rotation of the turntable, and the single-angle rotation of the turntable is the central angle of two adjacent jigs on the turntable. As a person skilled in the art, when the detection system is specifically used, the detection system is matched with other functional components to finish assembly operations except for gear shaft preassembly quality detection, so that the jig can correspond to a specific operation step at a stop position after each stop, and operation coverage areas related to arrangement modes of the other functional components are arranged to be distributed at intervals with the central angles.
The invention has the following beneficial effects:
in the structural design of this scheme, the shaft hole is arranged in holding the gear shaft, and the hole depth that sets up to the shaft hole is less than the length of gear shaft, the opening in shaft hole up, aims at making the gear shaft of accomplishing the pre-installation can hold in the shaft hole with the upper end for the form of shaft hole evagination, like this, when transferring the gear shaft casing and accomplishing the gear shaft assembly, the reduction gear casing can be for the mode of tool along gear shaft axis direction motion in opposite directions, accomplishes the cooperation of gear shaft and the last gear shaft mounting hole of reduction gear casing.
The quantity of shaft hole is a plurality of on the tool for realize: after the gear shafts are preassembled at a time, the assembly of a plurality of gear shafts can be synchronously or distributed, and meanwhile, the problem that a clamp and the gear shafts are interfered possibly due to the fact that a single gear shaft is clamped by a traditional clamp to be installed is solved.
The quantity that sets up to the tool is a plurality of, and the tool is arranged along the transmission orbit equidistance interval of tool, aims at realizing: under the effect of transfer mechanism, after the tool is once transferred by the equidistance between the station, each tool can all correspond with the position of next operation station to the intelligent assembly of reduction gear is realized.
The number of the shaft detection devices is greater than one, the detection areas corresponding to the shaft detection devices are distributed at intervals along the transmission track of the jig, and the jig can stay as follows under the action of the transmission mechanism: each shaft detection device's detection area is interior to have a tool, and different tools are in different detection areas, aim at taking into account the required time of single gear shaft preassembly detection to optimize the required time difference of each process in the assembly process, reach the purpose that realizes the high-efficient assembly of reduction gear: in consideration of automatic assembly of the speed reducer, the gear shaft feeding on the jig, the gear shaft matching with the speed reducer shell, the speed reducer shell matching with the outer gear shaft, the speed reducer shell being removed from the jig and other steps are arranged on different stations, the inner side of the speed reducer for the gas meter and the water meter is generally provided with a large number of gear shafts, such as five gear shafts, when the preassembly quality detection of each gear shaft is realized, the preassembly quality of each gear shaft needs to be detected in consideration of the assembly quality, meanwhile, due to the size problem and the arrangement distance problem of the gear shafts, the system investment cost of a detection means based on image recognition is high and the condition that the result error easily occurs, the specific implementation preferably adopts a contact detection means as mentioned in application number CN201610776524.9, so that the assembly of all gear shafts is realized in a single station, the corresponding elastic contact needs to reciprocate for a plurality of times (only the preassembly quality detection of one gear shaft can be completed once), the time required for completing the detection of all gear shafts is long, and when the preassembly quality detection of each gear shaft needs to be completed in other stations is less than the time required for the preassembly quality detection of each gear shaft, such that the preassembly quality detection is not good for the other stations, and the efficient assembly of the speed reducer is not set in other stations. Adopt the axle detection device setting scheme that this scheme provided, usable in the arbitrary time of tool stay, realize the preassembly time detection of gear shaft on different stations, through dividing whole gear shaft to accomplish the detection on the axle detection device that quantity is greater than one, can shorten tool single stay time, reach the purpose that promotes reduction gear whole assembly efficiency.
The detection method provided by the scheme is a use method of the detection system.
Drawings
FIG. 1 is a top view of one embodiment of a preloaded quality inspection system suitable for industrial Internet of things manufacturing according to the present disclosure;
fig. 2 is a schematic structural diagram of a shaft detection device in an embodiment of a preassembly quality detection system suitable for industrial internet of things manufacturing according to the present disclosure;
fig. 3 is a schematic perspective view of a fixture in an embodiment of a preassembly quality detection system suitable for manufacturing an industrial internet of things according to the present disclosure.
The reference numerals in the drawings are respectively: 1. mounting table, 2, carousel, 3, tool, 31, shaft hole, 4, detection sensor, 5, first loading attachment, 6, axle detection device, 61, elastic contact, 62, detection sensor, 63, vertical mobile device, 64, lateral mobile device, 65, frame, 66, detection end, 7, second loading attachment, 8, third loading attachment, 9, turning device
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1 to 3, the preassembly quality detection system suitable for industrial internet of things manufacturing comprises a transmission mechanism for transmitting a reducer housing;
A jig 3 mounted on the transfer mechanism;
the jig 3 is provided with a shaft hole 31 for accommodating a gear shaft, the opening of the shaft hole 31 faces upwards, and the depth of the shaft hole 31 is smaller than the length of the gear shaft;
the device also comprises a shaft detection device 6 for detecting the preassembly quality of the gear shaft on the jig 3;
the number of the shaft holes 31 on the jig 3 is a plurality of;
the number of the jigs 3 is multiple, and the jigs 3 are distributed at equal intervals along the transmission track of the jigs 3;
the number of the shaft detection devices 6 is greater than one, the detection areas corresponding to the shaft detection devices 6 are distributed at intervals along the transmission track of the jig 3, and the jig 3 can stay as follows under the action of the transmission mechanism: each shaft detection device 6 has one jig 3 in its detection area, and different jigs 3 are located in different detection areas.
In the prior art, as described in the technical scheme provided by application number CN201610776524.9, a specific assembly method of the gear shaft and a structural foundation corresponding to the method are provided in the specific technical scheme, and meanwhile, in the specific assembly method and the structural foundation, a gear shaft preassembly quality detection station based on the elastic contact 61 is included.
The technical scheme is provided in consideration of the problem of improving the preassembling efficiency of the gear shaft.
Specifically, the shaft hole 31 is configured to accommodate a gear shaft, the hole depth of the shaft hole 31 is smaller than the length of the gear shaft, and the opening of the shaft hole 31 is upward, so that the gear shaft with the preassembled upper end protruding outwards relative to the shaft hole 31 can be accommodated in the shaft hole 31, and thus, when the gear shaft housing is transferred, the gear housing can move in opposite directions along the axial direction of the gear shaft relative to the jig 3, and the gear shaft mounting hole on the gear housing can be matched.
The number of the shaft holes 31 on the jig 3 is multiple, and the method is used for realizing: after the gear shafts are preassembled at a time, the assembly of a plurality of gear shafts can be synchronously or distributed, and meanwhile, the problem that a clamp and the gear shafts are interfered possibly due to the fact that a single gear shaft is clamped by a traditional clamp to be installed is solved.
The quantity that sets up to tool 3 is a plurality of, and tool 3 is arranged along the equidistant interval of the transmission orbit of tool 3, aims at realizing: under the effect of transfer mechanism, after tool 3 is once transferred by the equidistance between the station, each tool 3 can all correspond with the position of next operation station to the intelligent assembly of reduction gear is realized in the convenience.
The number of the shaft detection devices 6 is set to be larger than one, and detection areas corresponding to the shaft detection devices 6 are distributed at intervals along the transmission track of the jig 3, and the jig 3 can stay as follows under the action of a transmission mechanism: each shaft detection device 6 has a jig 3 in the detection area, and different jigs 3 are in different detection areas, and aim at considering the time required by the preassembly detection of a single gear shaft so as to optimize the time difference required by each process in the assembly process, thereby achieving the aim of realizing the efficient assembly of the speed reducer: when the automatic assembly of the speed reducer is considered, the gear shaft feeding on the jig 3, the gear shaft matching with the speed reducer shell, the speed reducer shell matching with the outer gear shaft, the speed reducer shell removing from the jig 3 and other steps are arranged on different stations, the inner side of the speed reducer for the gas meter and the water meter is generally provided with a large number of gear shafts, if five gear shafts are commonly arranged, when the preassembly quality detection of each gear shaft is realized, the preassembly quality of each gear shaft needs to be detected in consideration of the assembly quality, meanwhile, due to the size problem and the arrangement distance problem of the gear shafts, the input cost of a detection means system based on image recognition is high, and the situation that the result error easily occurs is easy to occur, the contact detection means as mentioned in application number CN201610776524.9 is preferably adopted for specific implementation, so that the corresponding elastic contact 61 needs to reciprocate for a plurality of times (only one preassembly quality detection of the gear shaft can be completed in a single time), the time required for completing all the detection of the gear shafts is longer, and when the preassembly quality detection of the gear shafts required by completing the assembly steps of other speed reducers on other stations is required to complete the preassembly quality detection of the gear shafts in order of time is less than the time required for completing the preassembly quality detection of the gear shafts on other stations, namely, the preassembly time is not good for completing the preassembly of the speed reducer on other stations in idle time is set. By adopting the shaft detection device 6 setting scheme provided by the scheme, the preassembly time detection of the gear shafts can be realized on different stations by utilizing the arrangement of the jig 3 in any stay time, and the single stay time of the jig 3 can be shortened by separating all the gear shafts to finish detection on the shaft detection device 6 with the number more than one, so that the aim of improving the overall assembly efficiency of the speed reducer is fulfilled.
More specifically, the existing common speed reducer that includes gear shaft quantity is five, to this kind of gear shaft preassembly quality detection, in order to coordinate the operating time that needs on other operation stations for each tool 3 is after stopping the motion, accomplishes other operations and its gear shaft preassembly quality detection on in similar time, can set up the quantity of axle detection device 6 to two, and adopts: one shaft detection device 6 is used for completing preassembly quality detection of two gear shafts, and the other shaft detection device 6 is used for completing preassembly quality detection of other three gear shafts.
As a person skilled in the art, in the implementation, considering the optimal design of the system, since the number of pre-assembling processes of the gear shaft is large, when the shaft hole 31 is used for accommodating the gear shaft installed inside the gear shaft, according to a specific process setting, the steps involved in the processes involve: the gear shaft feeding on the jig 3, the gear shaft matching with the gear housing, the gear housing matching with the gear shaft on the outer side, the gear housing being removed from the jig 3, etc., so that the number of the jigs 3 to be set is large in order to ensure that each jig 3 stays to any work step operation station in the circulation period to be capable of being correspondingly operated. In this scheme, therefore, the following are mentioned: the different jigs 3 are located in different detection areas, preferably all jigs 3, and when the transfer mechanism transfers the jigs 3 to each operation station, the jigs 3 equal in number to the shaft detection devices 6 are respectively stopped in the detection areas corresponding to the shaft detection devices 6. The shaft detection device 6 is arranged for the operation station corresponding to each step, so that the detection purpose can be realized; the number of the shaft detecting devices 6 and the number of the shaft holes 31 are the same, and the detection purpose required by the scheme can be realized.
Example 2:
this example was further refined and optimized on the basis of example 1:
as a method for synchronously assembling all gear shafts inside the speed reducer by single opposite movement when the subsequent gear shafts are assembled with the speed reducer shell, the method is as follows: the number of the shaft holes 31 on each jig 3 is consistent with the number of gear shafts which are required to be installed on the inner side of the speed reducer;
the relative position between the shaft holes 31 on each jig 3 is consistent with the relative position between the gear shafts to be mounted on the inner side of the speed reducer.
Example 3:
this example was further refined and optimized on the basis of example 1:
as described above, since the number of steps is large in the gear shaft assembling process, the number of functional parts to be provided on the whole of the assembling mechanism is large, and considering that the gear shaft assembling of the speed reducer is only one of the processes in the manufacturing process of the speed reducer, as a technical scheme capable of reducing the occupied space of the whole of the assembling mechanism, it is provided that: the transmission mechanism comprises a turntable 2, and the jigs 3 are fixed on the turntable 2 in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable 2;
the rotating center of the turntable 2 is also provided with a through hole;
the device also comprises a mounting table 1 which is supported above the turntable 2 through a bracket, wherein the through hole is used as a passage for the bracket to pass through the turntable 2;
The shaft detection device 6 is mounted on the mounting table 1. In the prior art, the controllable precision of the rotation angle of the transmission mechanism of the turntable 2 is high, and each jig 3 can automatically complete the flow circulation in the rotation process of the turntable 2. Through setting up to include through-hole, support and mount table 1 for each functional unit including axle detection device 6 can be concentrated relatively and arrange around carousel 2 and carousel 2 top, thereby reach and avoid adopting traditional functional unit to set up the problem that the requirement carousel 2 size is great that the arrangement mode brought in the carousel 2 outside. In the embodiment, the shaft detecting device 6 is mounted on the mounting table 1 because the shaft detecting device 6 does not need to be involved in the material feeding problem. In this way, the space outside the turntable 2 can be used for installing the first feeding device 5 for feeding the gear shaft in the shaft hole 31, and the first feeding device 5 is positioned at the upstream of the shaft detection device 6 in the transmission flow of the jig 3; the shaft detection means 6 are arranged adjacently in the whole functional part; a second feeding device 7 for feeding the cover body of the speed reducer is arranged at the downstream of the shaft detection device 6; a third feeding device 8 for feeding the gear shaft outside the reducer housing is arranged at the downstream of the second feeding device 7. The first feeding device 5, the second feeding device 7 and the third feeding device 8 can all adopt feeding devices comprising manipulators and clamps, the clamps are used for clamping corresponding materials, the manipulators are used for changing the postures and the positions of the materials, and finally the purpose of mutually assembling all the component parts on the speed reducer is achieved.
Example 4:
this example was further refined and optimized on the basis of example 1:
as a concrete implementation form of the shaft detection device 6 with simple structure, low setting cost and reliable detection result, the shaft detection device is set as follows: the shaft detecting device 6 includes a spring contact 61, a moving device for driving the spring contact 61 to move along the axial direction of the shaft hole 31, and a detecting sensor 624 for detecting the expansion and contraction amount of the spring contact 61. In this scheme, through mobile device removes the elastic contact 61, when appear under the circumstances such as gear shaft neglected loading, assembly are not in place, gear shaft length dimension mistake, corresponding elastic contact 61 detection data all can be to the deviation with the data that obtains when correctly preassembling the gear shaft, like this, through the deviation judgement, can obtain the preassembling quality of gear shaft.
As described above, considering that in the assembly process of the speed reducer, the operation time required for the steps other than the operation station of the shaft detection device 6 is generally longer than the time required for the preassembly quality detection of a single gear shaft, in order to reasonably use each shaft detection device 6, it may be configured that a single shaft detection device 6 completes the detection of two or more gear shafts within the residence time period of one fixture 3, as a more perfect setting form of the shaft detection device 6: the moving device comprises a vertical moving device 63 and a transverse moving device 64;
The elastic contact 61 is mounted on the vertical moving device 63;
the vertical movement means 63 are mounted on the lateral movement means 64. In the scheme, the vertical moving device 63 is adopted to drive the elastic contact 61 to move along the axis of the gear shaft, so that the preassembly quality detection of the single gear shaft is realized; when the preassembly quality detection of the gear shaft needs to be switched to the next position, the transverse moving device 64 completes the movement of the vertical moving device 63 along the pitch direction of the gear shaft, so that the detection end 66 of the elastic contact 61 is moved to the top end of the gear shaft opposite to the next position.
In the use process of the elastic contact 61, because the positive pressure area of the end surfaces of the gear shaft and the elastic contact 61 is smaller (the two ends of the gear shaft are generally provided with tips for guiding), the elastic contact 61 may have local pressure loss after being used for many times, and the pressure loss surface is not necessarily regular, so that the situation that the detection result is unreliable only when the parameter resetting of the compression amount of the elastic contact 61 is performed at this time is provided, as a technical scheme convenient for maintaining the elastic contact 61, the technical scheme is as follows: the front end of the elastic contact 61 is a detection end 66 for contacting with the end of the gear shaft;
the detection end 66 is detachably connected to the elastic contact 61. By adopting the scheme, the detection end 66 of the elastic contact 61 can be replaced in time under the condition of need. When judging the preassembly quality of gear shafts with different lengths, the detection ends 66 with different lengths can be matched with the possibly related gear shafts, so that the detection system has better universality under the condition of not changing the data of the control center according to the detection ends 66 with different lengths.
As a technical scheme that is convenient for accomplish the installation of detection end 66 and dismantle, do benefit to detection end 66 installation quality control simultaneously in order to do benefit to this system testing result reliability, set up to: the detection end 66 is connected to the elastic contact 61 in a threaded manner;
the elastic contact 61 is further provided with a limiting end face, and the limiting end face is used for: during the process of connecting the detection end 66 to the elastic contact 61 by rotating the screw, the positive pressure applied to the detection end 66 is provided by the limit end surface, and the detection end 66 is prevented from further moving in the axial direction of the elastic contact 61. As a person skilled in the art, the detecting end 66 should be a rigid section on the elastic contact 61, and the detecting end 66 is preferably also a rigid section mounted on the main body of the elastic contact 61, so in this scheme, when the corresponding threaded connection is implemented by using a blind hole with internal threads, the bottom of the blind hole with the above threads and the end face of the external thread section can be used as the above end faces; meanwhile, the end surface may also be a convex end surface arranged on the side surface of the detection end 66 or the main body of the elastic contact 61: after the screw thread screwing is completed, the condition that the end face of the external thread section is in contact with the end face of the internal thread hole does not exist, and the corresponding limiting purpose is achieved through the contact between the end face of the internal thread hole and the end face of the protrusion. As a person skilled in the art, the above female threaded hole may be provided on the detection end 66, or may be provided on the body of the elastic contact 61.
Example 5:
this example was further refined and optimized on the basis of example 1:
as a technical scheme for completing removal of the gear shafts in all the shaft holes 31 in a purging manner under the condition that the gear shafts are detected to be unqualified in preassembly, the following steps are set: the jig 3 is also provided with air channels with outlet ends positioned on the bottoms of the holes of the shaft holes 31, and each shaft hole 31 is matched with an air channel;
the inlet end of the air channel is positioned on the side surface or the bottom surface of the jig 3.
Example 6:
the embodiment provides a preassembly quality detection method applicable to industrial internet of things manufacturing on the basis of embodiment 1, wherein the method is used for detecting preassembly quality of a gear shaft in a shaft hole 31 on a jig 3;
the method comprises the following steps:
through the transfer mechanism, transfer its upper jig 3 to: so that each shaft detection device 6 has one jig 3 in the detection area, and different jigs 3 are positioned in different detection areas;
each shaft detection device 6 works to finish preassembly quality detection of the gear shaft on the jig 3 in each detection area. The method provides a technical basis for intelligent assembly of the speed reducer, and can optimize the gear shaft preassembly detection process and improve the assembly efficiency of the speed reducer from the whole process design of the speed reducer assembly.
Example 7:
this example was further refined and optimized on the basis of example 6:
as a technical scheme which takes the rotary table 2 as an index plate, the device is controllable, has high controllable precision, and can effectively avoid the idle stay of the jig 3 in the rotation period of the rotary table 2, and is set as follows: the transmission mechanism comprises a turntable 2, and the jigs 3 are fixed on the turntable 2 in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable 2;
the transfer is single fixed angle rotation of the turntable 2, and the single rotation angle of the turntable 2 is the central angle of two adjacent jigs 3 on the turntable 2. As a person skilled in the art, when the detection system is specifically used, the operation coverage areas associated with the arrangement mode of other functional components are set to be distributed at intervals with the central angle, so that the stop positions of the jig 3 can be corresponding to a specific operation step after each stop when the assembly operation except the preassembly quality detection of the gear shaft is completed by matching with other functional components.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and it is not intended that the invention be limited to these descriptions. Other embodiments of the invention, which are apparent to those skilled in the art to which the invention pertains without departing from its technical scope, shall be covered by the protection scope of the invention.
Claims (8)
1. The preassembly quality detection system suitable for the industrial Internet of things manufacturing comprises a transmission mechanism for transmitting a speed reducer shell;
a jig (3) mounted on the transfer mechanism;
the jig (3) is provided with a shaft hole (31) for accommodating the gear shaft, the opening of the shaft hole (31) faces upwards, and the depth of the shaft hole (31) is smaller than the length of the gear shaft;
the device also comprises a shaft detection device (6) for detecting the preassembly quality of the gear shaft on the jig (3);
the fixture is characterized in that the number of the shaft holes (31) on the fixture (3) is a plurality of;
the number of the jigs (3) is multiple, and the jigs (3) are distributed at equal intervals along the transmission track of the jigs (3);
the number of the shaft detection devices (6) is greater than one, detection areas corresponding to the shaft detection devices (6) are distributed at intervals along the transmission track of the jig (3), and the jig (3) can stay as follows under the action of the transmission mechanism: one jig (3) is arranged in the detection area of each shaft detection device (6), and different jigs (3) are positioned in different detection areas;
the transmission mechanism comprises a turntable (2), and the jig (3) is fixed on the turntable (2) in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable (2);
The rotating center of the turntable (2) is also provided with a through hole;
the mounting table (1) is supported above the turntable (2) through a bracket, and the through hole is used as a passage for the bracket to penetrate through the turntable (2);
the shaft detection device (6) is arranged on the mounting table (1);
the shaft detection device (6) comprises an elastic contact (61), a moving device for driving the elastic contact (61) to move along the axial direction of the shaft hole (31), and a detection sensor (62) for detecting the expansion and contraction amount of the elastic contact (61).
2. The preassembly quality detection system suitable for industrial internet of things manufacturing according to claim 1, wherein the number of shaft holes (31) on each jig (3) is consistent with the number of gear shafts required to be installed on the inner side of the speed reducer;
the relative positions of the shaft holes (31) on the jigs (3) are consistent with the relative positions of the gear shafts which are required to be installed on the inner side of the speed reducer.
3. The preassembly quality inspection system for industrial internet of things manufacturing of claim 1 wherein the mobile device includes a vertical mobile device (63) and a lateral mobile device (64);
the elastic contact (61) is arranged on the vertical moving device (63);
The vertical moving device (63) is mounted on the transverse moving device (64).
4. The preassembly quality inspection system suitable for industrial internet of things manufacturing according to claim 1, characterized in that the front end of the elastic contact (61) is an inspection end (66) for contacting with the gear shaft end;
the detection end (66) is detachably connected to the elastic contact (61).
5. The preassembly quality inspection system for industrial internet of things manufacturing according to claim 4, wherein the inspection end (66) is screwed onto the elastic contact (61);
the elastic contact (61) is also provided with a limiting end face which is used for: during the process that the detection end (66) is connected to the elastic contact (61) through the rotary thread, positive pressure applied to the detection end (66) is provided through the limiting end surface, and the detection end (66) is prevented from further moving along the axial direction of the elastic contact (61).
6. The preassembly quality detection system suitable for industrial internet of things manufacturing according to claim 1, wherein the jig (3) is further provided with air channels with outlet ends positioned on bottoms of the holes of the shaft holes (31), and each shaft hole (31) is matched with the air channel;
The inlet end of the air channel is positioned on the side surface or the bottom surface of the jig (3).
7. The preassembly quality detection method suitable for industrial Internet of things manufacturing is used for detecting the preassembly quality of the gear shaft in the shaft hole (31) on the jig (3), and is characterized in that the detection method is based on the detection system of any one of claims 1 to 6;
the method comprises the following steps:
through the transfer mechanism, transfer its upper jig (3) to: so that the detection areas of the shaft detection devices (6) are provided with one jig (3), and different jigs (3) are positioned in different detection areas;
each shaft detection device (6) works to finish preassembly quality detection of the gear shaft on the jig (3) in each detection area.
8. The preassembly quality detection method suitable for industrial internet of things manufacturing according to claim 7, wherein the transmission mechanism comprises a turntable (2), and the jigs (3) are fixed on the turntable (2) in a mode of being annularly and uniformly distributed relative to the rotation center of the turntable (2);
the transfer is single fixed angle rotation of the turntable (2), and the single rotation angle of the turntable (2) is the central angle of two adjacent jigs (3) on the turntable (2).
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