JP2006176329A - Cell production method and cell production facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cell production method and a cell production facility, applicable to both when one worker manufactures a plurality of works and when a plurality of workers manufacture one work, by shortening production lead time, by further improving production efficiency more than conventional production efficiency. <P>SOLUTION: This production facility has a revolving route for returning to an original position by making a round and a plurality of part supply stations arranged along the revolving route. The cell production method is characterized by successively manufacturing the works up to the next corresponding station with respective stations on a work carriage for traveling on the revolving route. The manufactured work may be delivered to another work carriage of traveling together. The cell production facility has the revolving route, the work carriage for traveling on the revolving route by carrying the workers and the plurality of part supply stations arranged along the revolving route; and is characterized by manufacturing the plurality of works. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cell production method and a cell production facility for producing a workpiece while traveling on a round route with a work carriage.

  One of the methods for producing products is a so-called line production method using a conveyor line. In this line production method, a plurality of stations are provided along a conveyor line, and workers, production equipment, tools, parts, members, and the like are arranged in each station. And a workpiece | work is conveyed in order by a conveyor line, a predetermined work process is performed in each station, and a product is produced. While this line production system is suitable for mass production, it requires a large amount of capital investment, and it is difficult to respond flexibly when changing product specifications.

  In recent years, in the fields of the automobile industry and the electrical industry, there is an increasing need to produce many models in small quantities in order to respond to the diversification of consumer needs. As a production method suitable for this multi-model small-volume production, a cell production method in which a single worker performs a plurality of work processes is gradually expanding instead of a line production method. The cell production method has the advantage that it is easy to respond to changes in product specifications and requires less capital investment. Also, from the worker's side, the consciousness of completing the product by himself is born, so it can be tackled eagerly.

As a cell production system, for example, Patent Document 1 discloses a method in which a work is placed on a hand-operated work cart and work is performed while visiting a plurality of stations. Also, means for raising and lowering the workpiece is provided to improve productivity and reduce worker fatigue.
JP 2003-251575 A

  By the way, in the cell production method of Patent Document 1, no work process is in progress while the work carriage is moving, and it is still difficult to say that the production efficiency is sufficient. Further efficiency and shortening of the production lead time are achieved. Is expected. Also, depending on the scale of the product, it may not always be appropriate for one worker to produce one workpiece. In other words, if the scale of the workpiece is small, one person may produce a plurality of workpieces. If the scale of the workpiece is large, the work process is distributed to a plurality of workers and the work is advanced. It is possible. Thus, there has been a demand for a production method that can flexibly respond to the scale of the workpiece.

  The present invention has been made in view of the above background, and can further improve the production efficiency and shorten the production lead time as compared with the conventional case, when one worker produces a plurality of workpieces and a plurality of workers. Provided is a cell production method and a cell production facility that can be applied to both cases of manufacturing one workpiece.

Means for Solving the Problems and Effects of the Invention

  The cell production method of the present invention is a production facility having a circulation route that makes a round and returns to the original position, and a plurality of parts supply stations provided along the circulation route. In the above, a workpiece is sequentially manufactured for each station until the next station. You may make it pass the produced | generated said workpiece | work to another work cart which runs alongside.

  The main object of the present invention is to further improve the cell production method according to the application of the previous Japanese Patent Application No. 2003-421122 and to expand the application range. That is, a cell production method and equipment for producing a plurality of relatively small works at one time are disclosed. The present invention has a new feature in that a workpiece is completed for each of a plurality of stations provided along a circulation route while utilizing the feature of working on a traveling work carriage disclosed in the previous application.

  In the cell production method of the present invention, a part supplied at a certain station is finished into a completed work in the time required to arrive at the next station. For this purpose, it is preferable to perform work while the work cart is running. Necessary tools and jigs may be provided at each station or may be provided on a work carriage. The manufactured work can be placed with a storage place beside the circuit route.

  According to this cell production method, one different work can be completed for each station by traveling once around the route. Therefore, the same number of different workpieces are produced whenever work is finished, and there is an advantage that the production amount is not biased. Moreover, the time required for the movement of the conventional workpiece can be saved, and the production efficiency can be further improved.

  In addition, the cell production method of the present invention can be applied to sub work when a relatively large work is produced by a plurality of workers. When a workpiece is manufactured by multiple workers, the entire work process is divided into a main operation for manufacturing the entire workpiece and a sub-operation for manufacturing an assembly part composed of a plurality of members and constituting a part of the workpiece. Can do. Then, the main carriage and the sub-carriage can run along the circulation route, work in the running state, and the assembly parts manufactured by the sub-carriage can be passed to the main carriage. At this time, when viewed from the sub work side, each assembly part can be regarded as a work that has been produced, and a plurality of different works can be produced by one round of traveling.

  In the above-described cell production method using the main work and the sub work, the assembly part manufactured in the sub work is immediately used in the main work, and therefore it is not necessary to store it as a stock. In addition, the work process can be distributed to a plurality of workers, so that work efficiency is improved and production lead time is shortened.

  In order to actually perform the cell production method of the present invention, the cell production facility of the present invention described below can be used.

  That is, the cell production facility of the present invention includes a circulation route, a work carriage that travels along the circulation route with an operator on it, and a plurality of component supply stations provided along the circulation route, and a plurality of parts supply stations. It is characterized by producing a workpiece. The circulation route is a closed route that returns to the original position after making a round, and can be defined by, for example, attaching a magnetic tape to the floor surface of the work area. Or you may prescribe | regulate with the equipment which guides the route | route which a working trolley travels, such as a guide rail, a guide groove, and a guide wall.

  As the work carriage, for example, an automatic conveyance vehicle called AGV can be used. A route detection sensor can be provided at the lower part of the vehicle body of the automatic conveyance vehicle, and the vehicle travels on a prescribed circulation route while detecting the magnetic tape. In addition, a rail car that follows a guide rail may be used as the work carriage. In an automated guided vehicle, the route can be changed by simply replacing the magnetic tape, and there is an advantage that the production equipment can be flexibly reconfigured in response to the specification change of the workpiece to be produced. In the rail car, the traveling route is fixed and only the speed needs to be controlled, so that there is an advantage that the vehicle control device is simplified.

  The plurality of component supply stations are provided along the circulation route, and supply the held components to the work cart. The station corresponds to, for example, a part mounting table or a storage shelf. Further, the station may be provided with a storage place for receiving and storing the completed workpiece. Further, the work may be performed in the station. It is preferable that the number and roles of stations are determined in consideration of work efficiency and efficiency in accordance with workpiece specifications and work processes. In the cell production facility of the present invention having the above-described configuration, parts are supplied to the work carriage at a plurality of parts supply stations. The worker can work on the supplied parts in a state where the working cart on board is traveling. As a result, the worker can complete one workpiece before the work carriage arrives at the next station after receiving the parts supply. Therefore, a plurality of workpieces can be manufactured when the work carriage goes around the circulation route and goes around the plurality of component supply stations.

  The cell production facility of the present invention may have a plurality of the work carts. If a plurality of work carts are allowed to travel on one round route, the production amount of the workpiece can be increased. Also, if the number of work carts is increased or decreased sequentially according to the required number of workpieces, there will be no shortage of workpieces or excess inventory.

  It is preferable that the work cart includes a work table for performing work and a boarding unit on which an operator can be boarded so as to be able to work in a traveling state. In order to produce a workpiece before the next station, it is preferable that the work carriage is equipped with a work table. The work table may be a general-purpose flat table or a work holding unit capable of holding a work. Further, it is preferable that the work cart is provided with a riding section that allows an operator to get on and work in a traveling state. The boarding part may be provided with a handrail for ensuring the safety of the operator and a storage part for storing parts and tools.

  The work carriage may include a travel control device that controls travel. The action carriage is preferably provided with a travel control device for controlling the circulation route and speed. For example, in the automatic guided vehicle, a traveling route and a speed are set in advance in the travel control device, and the vehicle automatically travels based on this. The traveling speed may always be constant, or the speed may be changed depending on the station. Furthermore, when there is an operation requiring a long time, the work carriage may be temporarily stopped.

  According to the automatic traveling, the operator does not need to operate the work carriage, and can concentrate on the work even in the traveling state, and the work efficiency is increased. Further, the work carriage may be controlled to run by the operator's driving operation. According to this, the worker can perform optional travel according to the difficulty level of the work, the skill level of the work, the occasional situation, and the like. Further, it may be provided with a function of detecting an obstacle on the circuit route and stopping or detouring, or a function of performing an emergency stop by an operator's operation of an emergency stop button.

  It is preferable that the station is prepared with parts constituting the workpiece and tools and jigs used for work. In addition to the components, tools and jigs used in specific work processes may be prepared in the component supply station. On the other hand, general-purpose parts such as tools and screws that are commonly used in many work processes may be provided on the work carriage. Further, an inspection device for inspecting the finished state of the workpiece may be prepared in the station.

  As described above, the cell production facility according to the present invention includes a circulation route, a work cart, and a parts supply station, performs work on the traveling work cart, and arrives at a part supplied at one station at the next station. As a result, the work is completed as a workpiece, and a plurality of workpieces are manufactured during one round of the circuit route.

  The best mode for carrying out the present invention will be described in detail with reference to FIGS. The perspective view of FIG. 1 is explanatory drawing which shows the Example of the installation which produces the transmission of the automatic transmission system incorporating the cell production equipment of this invention. The sub-cart 4 shown in FIG. 1 travels on a circuit route 12 that goes around once and returns to the original position, receives parts supplied from a plurality of parts supply stations 15 while making a circuit, and produces a plurality of assembly parts as workpieces. Passed to the main cart 2 running side by side. That is, this is an embodiment in which the production facility of the present invention is applied to a sub-work when a relatively large work is produced by a plurality of workers.

  Hereinafter, description will be made with reference to FIG. In the transmission production facility 1 of FIG. 1, three sets of main carts 2 and sub-carts 4 that run along with the main carts 2 are used. Each main carriage 2 is configured to automatically travel on the inner route 11. The sub cart 4 is connected to the main cart 2 and pushed to travel on the outer circuit route 12. Further, a straight route 13 is provided from the lower left to the upper right of FIG. 1 so that the preprocessing cart 6 reciprocates. An operator 9 gets on each of the carts 2, 4, 6 and can work in a running state. In addition, a component supply station 15, a work table 16, and a placing table 17 for delivering components are provided along the routes 11, 12, and 13, and necessary components and jigs are prepared.

  A transmission case 7 serving as a workpiece of the transmission production facility 1 is mounted on the preprocessing carriage 6 at the lower left loading station Si in FIG. 1 and is transported to the upper right loading station St. At the transfer station St, the case 7 is transferred from the preprocessing cart 6 to the main cart 2. While the main carriage 2 travels counterclockwise on the circulation route 11, the parts are assembled to the case 7 to complete the transmission and reach the unloading station So. After the completed transmission is unloaded at the unloading station So, the main carriage 2 returns to the replacement station St and the next case 7 is mounted.

  The sub cart 4 is pushed by the main cart 2 and travels on the outer circumference route 12. The sub-cart 4 is always located in front of the main cart 2 and runs side by side. Then, parts and members are received from the part supply station 15 outside the circulation route 12, assembled on the work table 16, completed as an assembly part corresponding to a work, and placed on the mounting table 17 inside the circulation route 12. I am doing so. Thereby, delivery to the succeeding main cart 2 can be performed.

  Next, the detailed configuration of the main carriage 2 and the sub carriage 4 will be described with reference to the explanatory diagram of FIG. The main carriage 2 is provided with a traveling wheel and a route detection sensor (not shown) on the lower side of the vehicle body 21 and a battery 22 and a traveling control device 23 on the upper side. Further, a bumper 24 and an approach sensor are provided at the lower front part of the vehicle body 21.

  The circulation route 11 of the main carriage 2 is defined by attaching a magnetic tape to the floor surface. The route detection sensor detects the magnetic tape and transmits a detection signal to the travel control device 23. Based on this detection signal, the travel control device 23 controls the direction and the rotational speed of the traveling wheels, so that the vehicle can travel along the circulation route 11. The proximity sensor detects an obstacle or another main carriage ahead, and transmits a detection signal to the travel control device 23. The travel controller 23 is configured to ensure safety by decelerating or stopping as necessary to avoid a collision.

  Above the vehicle body portion 21 of the main carriage 2, a frame body portion 25 in which shape steel is combined is disposed, and a work holding portion 26 and a work control portion 27 are disposed on the frame body portion 25. The work holding unit 26 holds the case 7 of the transmission that is a work. The case 7 can be fixed and released by the work control unit 27 and can be adjusted in height and posture. Thereby, the operator 9 can work by fixing the case 7 at an appropriate height and posture. Further, a driving operation section is provided on the rear surface of the frame body section 25 so that manual operation can be performed.

  A boarding portion 28 on which the operator 9 can get on is extended from the rear lower portion of the main body 21 of the main carriage 2. In addition, a handrail 29 supported upward from the rear portion of the riding section 28 is provided to ensure the safety of the boarded worker 9 and to stabilize the working posture. Further, a box-shaped storage unit 30 is provided behind the handrail 29 so that tools and parts can be stored.

  A support member 31 is provided vertically above the vehicle body portion 21 of the main carriage 2 and an arm 32 projecting horizontally from the upper end of the support member 31 is provided. A tool 33 is provided. The arm 32 is rotatable in the horizontal direction so that an assembly part or the like is lifted from the mounting table 17 and can be easily assembled to the case 7.

  A connecting member 34 is disposed from the middle of the support member 31 to the side, and the connecting member 34 is directed downward from the middle. A connecting rod 35 is disposed from the lower end of the connecting member 34 toward the front, and the tip of the connecting rod is connected to the vehicle body main body 41 of the sub-cart 4. The connecting member 34 and the connecting rod 35 correspond to connecting rods that physically connect the sub-trolley 4 and the main cart 2. The support material 21 and the connecting member 34 form a downward U-shaped gate. This gate is for avoiding the mounting table 17 disposed between the circulation routes 11 and 12.

  The sub-car 4 is provided with a route guide rod and traveling wheels (not shown) below the vehicle body 41. The circulation route 12 of the sub-trolley 4 is defined by providing a guide groove on the floor surface. The route guide rod is configured to protrude toward the floor surface and to be guided by entering the guide groove. On the other hand, the traveling wheel is a wheel whose traveling direction is freely changed, and can travel on the circuit route 12. The route route 12 may be defined by providing a guide groove or a guide wall instead of the guide groove and traveling along the guide groove.

  According to the above-described configuration, when the main cart 2 travels, the driving force is transmitted to the sub cart 4 via the support member 31, the connecting member 34, and the connecting rod 35. Therefore, the sub-trolley 4 can run in parallel with the main cart 2.

  Further, in the sub-cart 4, the upper surface of the vehicle body main body 41 also serves as a riding section. A handrail 42 supported upward from the rear portion of the vehicle body main body 41 is provided to ensure the safety of the boarded worker 9 and to stabilize the working posture.

  Next, a method for producing a transmission using the above-described transmission production facility 1 will be described. The plan view of FIG. 3 is a layout diagram showing the layout of the transmission production facility 1 shown in FIG. In FIG. 3, the hatched rectangle indicates the component supply station 15, and the open rectangle indicates the work table 16 or the mounting table 17. Note that there is a work table 16 that also serves as the component supply station 15. Symbols ML1 to ML13 indicate work steps of the main work, and on FIG. 3, approximate positions for receiving parts and jigs are indicated. By receiving the parts at this position, the assembling work to the case 7 held on the main carriage 2 can be performed. Symbols SL <b> 1 to SL <b> 10 indicate sub-work process steps, and the position of the work table 16 is illustrated in FIG. 3. This work table 16 can perform sub work for assembling assembly parts necessary for main work.

  FIG. 4 is a work process list showing each work process of transmission production in order, and also shows the relationship between the main work and the sub work. That is, the assembly parts prepared in the sub work are used for the main work with the same numerals. For example, it is shown that a part called B2 assembly assembled in the sub work SL1 is used in the main work ML1. A blank field means that no sub work is required. In the sub-operation, as shown in FIG. 4, seven assembly parts attached with the assembly at the end are manufactured. Each assembly part can be regarded as a workpiece.

  Although omitted in the work process list of FIG. 4, the case 7 of the transmission as a work is carried in from outside the work area and mounted on the preprocessing cart 6 at the carry-in station Si. The preprocessing cart 6 transports the case 7 to the replacement station St by the travel route 13, but the preprocessing is performed while traveling. At the transfer station St, the case 7 is transferred from the preprocessing cart 6 to the main cart 2. And the main trolley 2 and the sub trolley | bogie 4 will start drive | work, and the whole work process will begin. Hereinafter, the work process will be described in order.

  First, the worker 9 of the sub work assembles the B2 assembly 71 in the sub work SL1. The B2 assembly 71 is a composite part of the brake part. An O-ring, a return spring, and a snap ring are assembled to the B2 piston, and are integrally held by an assembling jig and placed on the mounting table 17. Then, the worker 9 of the main work takes the B2 assembly 71 on the mounting table 17 and assembles it to the case 7 in the main work ML1. Thereby, the cross section of the case 7 which is a workpiece | work will be in the B2 assembly assembly | attachment state shown by FIG.

  The sub work SL1 is performed on the traveling sub-car 4 and the main work ML1 is performed on the traveling main car 2. Therefore, when the operation is completed, the position of the next process is reached, so that time required for movement between processes is not necessary. In addition, the delivery of the B2 assembly 71 is performed on the mounting table 17 disposed between the two work carts 2 and 4, and the operator 9 does not need to move it. After the assembly work is completed, the assembly jig is left on the mounting table 17 and used for the next assembly. At this time, since the position of the main carriage 2 is moved at the start and end of the assembly, the mounting table 17 is made movable so that the assembly jig is automatically returned to the start position. .

  The above-described work process distribution and parts and jig delivery procedures are the same in the subsequent work processes. If a specific work process requires a long time, the work carriages 2 and 4 may be stopped for a certain time.

  In the sub work SL2, a rear subassembly 72 constituting a part of the gear for shifting, the clutch part, and the brake part is assembled. In the rear subassembly 72, a bearing, a spacer, a planetary gear assembly, and a brake plate are assembled around the axis of the clutch component, and are gripped by an assembly jig. In the main operation ML2, the rear subassembly 72 is assembled to the case 7, and the rear subassembly state shown in FIG. 6 is obtained.

  The next main operation ML3 is a size confirmation and component selection operation process that does not require sub-operations. That is, the worker 9 of the main work measures the thickness of the B2 brake shown in FIG. 7 using a plate thickness measuring jig. At this time, the thickness of the entire brake is measured while compressing with a jig to suppress undulation of the friction material of the multi-plate brake. Next, based on the measurement result, the backing plate 73 having an appropriate thickness is selected so as to cancel the individual difference in the thickness of the brake. Thereby, the individual difference at the time of brake manufacture is absorbed, and the working condition of a brake can be arranged.

  In the next sub-operation SL4, the snap ring 74 is prepared. The snap ring 74 used here is of a type that fits into a groove on the inner surface of the cylinder, and it is necessary to reduce the outer diameter of the snap ring 74 to be smaller than the cylinder diameter using a snap ring positioning jig. Furthermore, since the structure is not rotationally symmetric, the phase (angle) at the time of assembly can be matched with the jig. In the main operation ML4, the backing plate 73 selected in the previous process is incorporated, and the snap ring 74 received from the sub operation SL4 is inserted. As a result, the workpiece is in the assembled state of the backing plate shown in FIG.

  In the sub work SL5, the one-way clutch 75 and the snap ring 76 are set on the snap ring diameter-reducing jig. As in the previous step, the snap ring 76 is reduced in diameter and phase-matched. In the main operation ML5, the one-way clutch 75 and the snap ring 76 are assembled. Since a jig is used at this time, both parts can be assembled at once, and the work efficiency is high. As a result, the work is in the one-way clutch assembled state shown in FIG.

  In the sub operation SL6, the counter gear assembly 77 is assembled. In the main operation ML6, first, the center support 78 is inserted. Next, the counter gear assembly 77 is assembled, and the bolt 79 is tightened and fixed. The bolt 79 is tightened using a stationary electric screwdriver on the station side. As a result, the workpiece is in the counter gear assembled state shown in FIG.

  The next main operation ML7 is a dimensional confirmation operation process that does not require a sub-operation. That is, as shown in FIG. 11, the distance between the upper end of the counter gear assembly 77 and the upper end of the case 7 is measured. At this time, 360 points are measured while rotating the gear, and it is confirmed whether the counter gear assembly 77 is tilted or not assembled. In order to perform this efficiently, a measuring device having an automatic measuring function for intermittently measuring in a short time and an arithmetic function for obtaining an average value of measured data and the like is used.

  In the next sub-operation SL8, the drive pinion assembly 80 and the differential assembly (differential device assembly) 81 are assembled. In the main operation ML8, the two assemblies 80 and 81 are assembled and the differential assembly state shown in FIG. 12 is obtained.

  In the sub work SL9, the front sub assembly 82 and the C3 assembly (clutch part) are assembled. In the main operation ML9, the front subassembly 80 and the C3 assembly are assembled to the case 7, and the drive sun gear and the B1 band brake are further assembled. As a result, the front sub assembly state shown in FIG. 13 is obtained.

  Next, in the sub operation SL10, the oil pump assembly 83 is assembled. In the main operation ML10, the seven bolts 84 shown in FIG. 14 are temporarily tightened simultaneously using a bolt temporary tightening jig. Although it is finally tightened manually, the work efficiency is greatly improved by the bolt temporary tightening jig. As a result, the oil pump assembled state shown in FIG. 15 is obtained.

  In the main operation ML11, the movable dimension is measured by pulling up the shaft 85, and it is confirmed that there is no shortage of parts around the shaft.

  In the main operation ML12, the stroke of the B1 band brake is measured using a band brake stroke measuring jig. In this jig, the displacement is obtained by pushing the engaging convex portion of the B1 band brake, and the stroke unique to each brake is obtained.

  In the main operation ML13, the transmission is completed by assembling the B1 piston assembly.

  After completing all the work steps, the main carriage 2 and the sub carriage 4 arrive at the unloading station So. Here, the completed transmission is carried out by another carrier and sent to the inspection process. Thereafter, the main carriage 2 and the sub carriage 4 continue to travel along the circulation routes 11 and 12 and return to the replacement station St. Then, a new case 7 is placed and the next production cycle begins.

  The sub-car 4 of the embodiment travels on the outer route 12, receives parts supplied from the parts supply station 15, manufactures seven assembly parts in the running state, and passes through the mounting table 17 to form the main car 2. To pass on. Thereby, it was possible to obtain a rational production method and production facility in which two workers 9 cooperate to produce one product. In addition, high production efficiency could be realized in the sub work for completing a plurality of workpieces.

It is a perspective view explaining the transmission production equipment of the Example incorporating the cell production equipment of the present invention. It is an expansion perspective view explaining the main trolley | bogie and the sub trolley | bogie in the Example of FIG. It is a top view which shows arrangement | positioning in the Example of FIG. It is a figure of the transmission production process table | surface table | surface which shows the operation | work process in the Example of FIG. In an Example, it is a figure which shows the B2 assembly assembly | attachment state in the middle of transmission production. In an Example, it is a figure which shows a rear sub assembly | attachment state. In an Example, it is explanatory drawing which shows the method of measuring the thickness of B2 brake. In an Example, it is a figure which shows the backing plate assembly | attachment state. In an Example, it is a figure which shows the one-way clutch assembly | attachment state. In an Example, it is a figure which shows a counter gear assembly | attachment state. In an Example, it is explanatory drawing which shows the method of measuring the inclination of a counter gear. In an Example, it is a figure which shows a differential assembly | attachment state. In an Example, it is a figure which shows a front sub assembly | attachment state. In an Example, it is explanatory drawing which shows the method of assembling an oil pump. In an Example, it is a figure which shows the oil pump assembly | attachment state in the middle of transmission production.

Explanation of symbols

1: Transmission production equipment 11: Circulation route of main cart 12: Circulation route of sub-cart 13: Straight route of pre-processing cart 15: Parts supply station 16: Work table 17: Mounting platform 2: Main cart 21: Body body Part 22: Battery 23: Traveling control device 24: Bumper 25: Frame part 26: Workpiece holding part 27: Work control part 28: Boarding part 29; Handrail 30: Storage part 31: Support material 32: Arm 33: Lifting jig Tool 34: Connecting member 35: Connecting rod 4: Sub cart 41: Body body portion 42: Handrail 6: Preprocessing cart 7: Case (work)
71: B2 assembly 72: Rear subassembly 73: Backing plate 74: Snap ring 75: One-way clutch 76: Snap ring 77: Counter gear assembly 78: Center support 79: Bolt 80: Drive pinion assembly 81: Differential assembly 82: Front sub Assembly 83: Oil pump assembly 84: Bolt 85: Shaft 9: Worker Si: Loading station St: Reloading station So: Unloading station ML1-ML13: Work process of main work SL1-SL10: Work process of sub work

Claims (7)

In a production facility having a round route that returns to its original position after going around and a plurality of parts supply stations provided along the round route,
A cell production method characterized in that a work is sequentially produced between each station and the next station on a work carriage traveling on the circuit route.   The cell production method according to claim 1, wherein the produced work is transferred to another work carriage that runs side by side.   A cell comprising a circuit route, a work cart that travels on the circuit route with an operator, and a plurality of component supply stations provided along the circuit route, wherein a plurality of workpieces are produced. Production equipment.   The cell production facility according to claim 3, comprising a plurality of the work carts.   5. The cell production facility according to claim 3, wherein the work carriage includes a work table for performing work and a boarding unit on which an operator can be boarded so as to be able to work in a traveling state.   The cell production facility according to claim 3, wherein the work carriage includes a travel control device that controls travel.   The cell production facility according to any one of claims 3 to 6, wherein a part that constitutes the workpiece, and a tool and a jig used for work are prepared in the station.

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