JP2002068039A - Method of assembling automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently conduct production even when different models of bodies are made to run in one body assembling line. SOLUTION: When the bodies are mounted on the body assembling line L2 in order based on a production schedule, body information therein is transmitted to a dress-up line L21, a bare engine, and a mission and accessories attached thereto are selected in the dress-up line L21 based on the body information to manufacture a finished engine product in response to the order of the bodies conveyed on the body assembling line L2, a front suspension is coupled to the engine product in a front suspension and engine assembling line L22, and then the engine product is mounted on the body in an engine mounting station M.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a vehicle, which is suitable for a method for assembling a vehicle, and particularly suitable for mixing and flowing different models on one line.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional automobile assembling method.
The conventional automobile assembling method includes an engine assembly line L1 and a vehicle body assembly line L2.
Is a combination of a cylinder block assembly and a cylinder head assembly downstream of a cylinder block line L11 for producing a cylinder block assembly and a cylinder head line L12 for producing a cylinder head assembly, and a bare engine assembly. A bare engine line L13 for assembling the mission assembly to the bare engine assembly is provided, and an engine sub-assembly line L14 is disposed downstream of the bare engine line.
In the above, accessories such as a speed sensor and an alternating current generator (ACG) are assembled into a bare engine to make an engine finished product.

[0003] Based on the vehicle information input to the vehicle body assembly line L2, a finished engine to be mounted on the vehicle body is selected from the stock shop S, and is selected from the vehicle body assembly line L2.
2 to the engine mount station M.

Further, as specific prior arts relating to the above-mentioned assembly line, there are known those proposed in Japanese Patent Publication No. 3-71321 and Japanese Patent Application Laid-Open No. 8-197352.

[0005] The contents disclosed in Japanese Patent Publication No. 3-71321 are provided with a warehouse for engines and a warehouse for missions, select an engine with accessories already installed from the engine warehouse, and transfer it to a conveyor. The engine which passed the inspection by this engine test equipment is transported to the work place by assembling the engine, and the mission is assembled to complete the engine. The engine finished product is assembled to the flowing body.

The content disclosed in Japanese Patent Application Laid-Open No. 8-197352 is such that a transport path of a bare engine is divided into a plurality of partial transport paths, and predetermined components are assembled to the bare engine in each transport path. is there.

[0007]

In the above-described conventional method of assembling a vehicle, the types and order of the vehicle bodies to be put on the vehicle body assembly line and the finished engine manufactured on the engine assembly line are determined. No particular link is made. That is, in the past, no matter what kind of vehicle body can be put on the vehicle body assembly line, engine finished products tailored to all vehicle bodies that can be put on the vehicle body assembly line so that it can cope with it Stocked at the engine stocking area.

If the finished engine is stocked in the engine stocking area as described above, the completed vehicle can be reliably delivered from the vehicle body assembly line at the scheduled time. However, recently, there has been a tendency to produce a large number of models in small quantities in accordance with the needs of consumers. In particular, even though the bear engine is the same, accessories to be attached to it are often different. Even in such a case, it is necessary to stock many engine finished products in the engine stocking area in order to reliably pay out the completed vehicle from the vehicle body assembly line at the scheduled time. In the actual conventional line, 1200 engine finished products are stocked and occupy a large space.

Further, in the conventional method of assembling a vehicle, when a finished engine product comes out of an engine subassembly line, an order for accessories attached to the engine is ordered. This is because the engine may be mounted on the vehicle body immediately after being moved to the engine stocking area. However, they may not be immediately assembled to the vehicle body and may stay in the stock yard for a long time. As a result, the accessories attached to the completed engine product that has been stagnating for a long period of time result in an increase in the number of inventories, resulting in an unnecessary order.

[0010] Further, the biggest problem of the conventional automobile assembling method is that a completed engine is transported from an engine subassembly line to an engine stocking site or from an engine stocking site to a vehicle body assembly line. That is, in the above transport, the completed engine is hung on the hanger and transported.However, the weight of the finished engine with accessories is considerably increased, and the corresponding transport equipment is enlarged due to its strength. There was a problem of high price. In addition, the accuracy of the assembling of accessories to the engine and accessories for which the function was guaranteed at the time of delivery of accessories may be reduced due to collision or vibration of the finished engine during transportation. In this case, a defect was found in the inspection in the post-process, and the defect had to be corrected.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to complete an automobile by mounting a completed engine assembled on an engine assembly line to a vehicle body flowing through a vehicle body assembly line. A method of assembling a car, comprising: a cylinder block line for producing a cylinder block assembly; a cylinder head line for producing a cylinder head assembly; and a bare engine assembly provided downstream of the cylinder block line and the cylinder head line. It consists of a bare engine line to be manufactured and a dress-up line that is attached to one side of the body assembly line on the downstream side of the bare engine line and assembles accessories that have already been guaranteed as a single item to the bare engine assembly. The finished engine manufactured by the dress-up line It was to be mounted on the vehicle body that has been flowing through the down.

In the above configuration, a configuration may be adopted in which a bare engine stocking area is arranged between the bare engine line and the dress-up line.

In the above description, the mission assembly may be assembled to a bare engine in a bare engine line for producing a bare engine assembly, or the bare engine assembly may be provided with an accessory part whose function assurance has been made as a single item. The mission assembly may be assembled on a dress-up line to be assembled.

As described above, the finished engine product with the accessories attached to the bare engine is mounted on the vehicle body flowing through the vehicle body assembly line without stocking, so that the conventional engine was transported in the finished engine state. It is possible to avoid the occurrence of the malfunction of the component whose function is guaranteed, which has occurred. Further, since only the bare engine is stocked, the stock of parts can be reduced, and the place where stock parts are stocked can be eliminated.

In order to securely mount a specific engine finished product on a vehicle body flowing on a vehicle body assembly line, a bare engine assembly which receives vehicle body information carried into the vehicle body assembly line and flows to a dress-up line based on this information. It becomes possible by determining the kind and order of the three-dimensional object, the mission assembly and the accessory parts to be assembled to the bare engine assembly.

In order not to cause a short-circuit of the accessory parts and not to increase the stock of the parts, the parts can be ordered based on the body information or the engine docking information carried into the body assembly line. Good.

[0017]

Embodiments of the present invention will be described below. FIG. 1 is a schematic structural view of an automobile assembling method according to the present invention.
And a vehicle assembly line L2, and an engine assembly line L
In 1, a cylinder block line L11 for manufacturing a cylinder block assembly and a cylinder headline L12 for manufacturing a cylinder head assembly are provided in parallel. The engine assembly line L1 is provided in an engine factory, and the vehicle body assembly line L2 is provided in a vehicle body assembly factory.

In the cylinder block line L11, a cylinder block assembly is manufactured by assembling a piston rod, a crankshaft, a side cover, a bearing cap, an oil device, an oil pan, a flywheel, and the like into the cylinder block.

In the cylinder block line L11, the rotation and transmission functions of the crankshaft are guaranteed. Specifically, confirmation of the presence or absence of metal, confirmation of side clearance based on presence or absence of abnormal rotation of the crankshaft due to metal dust and metal clearance, and presence or absence of abnormal noise are performed.

In the cylinder head line L12, a cylinder head assembly is manufactured by assembling a camshaft, a shaft holder, a rocker arm and the like to the cylinder head.

In the cylinder head line L12,
Inspect the appearance and check for foreign matter bite to ensure the function of the valve train.

The cylinder block line L1
A bare line L13 is provided downstream of the cylinder head line L12. In the bare line L13, a cylinder block assembly is assembled to the cylinder block assembly to produce a head block assembly, and further, a timing belt and an exhaust manifold are assembled to the head block assembly, oil leakage inspection, ignition timing After adjustment, a bare engine assembly is manufactured.

In the bare line L13, basic functions of the engine are guaranteed. Specifically, check that there is no abnormality in the rotation of the crankshaft due to dust adhering to the camshaft, deviation of the valve timing, etc., whether the tappet clearance, the tension of the timing belt and the balancer belt are appropriate, whether the oil passage and the water Ensure that there is no leakage from the passage.

An engine stock space S is provided downstream of the bear line L13. The engine stocking site S is provided between the engine factory and the body assembly factory, but may be provided in any one of the factories. Conventionally, the engine stocking area S is stocked with finished engine products with attached function-guaranteed accessories, but according to the present invention, a bare engine without attached function-guaranteed accessories is attached. Will be stocked.

On the other hand, a body assembly line L in a body assembly factory
2, a dress-up line L21 is provided. This dress-up line L21 includes an engine sub-assembly line L22 on the upstream side and a front suspension line L2 on the downstream side.
And an engine assembly line L23. The dress-up line L21 does not need to be parallel to the vehicle body assembly line L2, but it is preferable that the end of the front suspension / engine assembly line L23 and the engine mount station M of the vehicle body assembly line L2 be close to each other.

In the engine subassembly line L22, first, the transmission assembly is assembled to the bare engine assembly. The function of this mission assembly is guaranteed as a single item at the mission assembly factory.

Next, a torque converter case cover, an engine stiffener, a speed sensor, an AT throttle wire, an AC generator, a compressor, a PS pump, a starter cable, and the like are attached to the bare engine assembly, and assembly is assured. The function of each of these parts is guaranteed by the manufacturer as a single item.

Further, in the engine sub-assembly line L22, the power train composite function is guaranteed. That is, in a state where the transmission assembly, the bare engine assembly and the drive shaft are connected, the connection state and the torque are checked. Also,
Inspection of the exhaust system for AC generators, compressors for air conditioners and belts for power steering, as well as gasket slippage and presence / absence.

Next, a method of assembling an automobile using the above-described line will be described. The production of the bare engine by the engine assembly line L1 in the engine factory is performed based on a previously created bare engine production plan, and the bare engine that has left the engine assembly line L1 is stocked in the engine stocking space S.

On the other hand, at the entrance of the vehicle body assembly line L2, various vehicle bodies are mounted on the transfer device based on the order of the production plan of the vehicle. Then, the vehicle body information is sent to the parts maker, the transmission assembly line and the engine stocking site S, and the bare engine flows on the dress-up line L21 in the order of the vehicle body information and is transferred on the vehicle body assembly line L2. To produce the finished engine according to the order of the front suspension engine assembly line L2
After the front suspension and the engine finished product are combined in 3, the engine finished product is mounted on the vehicle body at the engine mount station M, and the assembly work of the vehicle body and the engine finished product is completed.

FIG. 2 is a view similar to FIG. 1 showing another embodiment. In this embodiment, the assembly of the mission assembly to the bare engine assembly is performed at a bare line L13 in an engine factory. ing. As a result, what is stocked in the engine stocking area is the bare engine assembly combined with the transmission assembly. In this case, the vehicle information is sent to the parts maker and the engine stocking area S. In addition, the carrier means will be transported with the bare engine assembly and the mission assembly coupled to it, but since accessories are not yet attached to this, accessories whose functions are guaranteed by vibration or collision Function is not impaired.

In the illustrated example, the example in which the engine stocking site S is provided is shown. However, the type and the order of the vehicle body mounted on the vehicle body assembly line L2 and the finished engine product produced on the engine assembly line L1 are different. In the case of a factory whose production is controlled so as to be synchronized, there is no need to particularly arrange an engine stock space between the bare line L13 and the engine sub-group line L22. Also, it is possible to place a part order to a part maker based on engine docking information.

[0033]

According to the present invention as described above,
Instead of stocking the finished engine with accessories attached to the bare engine assembly, instead of stocking it, it is mounted on the body that flows through the body assembly line, so the inventory of parts can be reduced and space is also saved This is advantageous because inventory can be reduced.

Also, since the accessories are mounted on the vehicle body without being transported after being attached to the bare engine assembly, the function assurance of a single product can be maintained as it is.

Further, since the bare engine assembly is transported to a dress-up line arranged on one side of the vehicle body assembly line, the transport equipment can be reduced in size and cost.

Also, based on the body information carried into the body assembly line, the type and order of the bare engine assemblies to be flown to the dress-up line, and the mission assembly and accessories to be assembled to the bare engine assembly are determined based on this information. By doing so, it is possible to reliably mount a specific engine finished product on a specific vehicle body.

Further, if parts are ordered based on the information of the car body carried into the car body assembly line, short-circuiting of the parts can be prevented with the stock amount minimized.
You can assemble a car.

In particular, in the present invention, the engine subassembly line in the conventional engine assembly factory is not only arranged along the vehicle body assembly line in the body assembly factory.
Even if the conventional engine sub-assembly line is brought to the body assembly plant, in order to make the expected production as in the past, a stocking place for finished engine products must be provided downstream of the engine sub-assembly line. A stocking area for finished engine products must be secured in the factory,
On the contrary, the production efficiency deteriorates. However, according to the present invention, different types of vehicles can be produced on one line without the above-mentioned problems.

[Brief description of the drawings]

FIG. 1 is a layout diagram illustrating an automobile assembling method according to the present invention.

FIG. 2 is a layout diagram illustrating a method of assembling a vehicle according to another embodiment.

FIG. 3 is a layout diagram illustrating a conventional automobile assembling method.

[Explanation of symbols]

L1: engine assembly line, L2: body assembly line, L
11: cylinder block line, L12: cylinder headline, L13: bare line, L21: dress-up line, L22: engine assembly line, L23: front suspension / engine assembly line, M: engine mount station, S: engine stock space.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koichi Shimoda 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Motor Co., Ltd. Saitama Factory (72) Inventor Yuichi Oda 1907 Hiratacho, Suzuka City, Mie Prefecture (72) Inventor Tadaaki Okamura 1907, Hirata-cho, Suzuka-shi, Mie F-term (reference) 3C030 CC04 3D114 AA01 AA03 AA06 AA11 AA12 BA26 CA09 CA16 CA18 JA04

Claims (5)

[Claims] 1. A method of assembling an automobile, wherein the engine is completed by mounting a completed engine assembled on an engine assembly line to a vehicle body flowing through the body assembly line, wherein the engine assembly line includes a cylinder. A cylinder block line for producing a block assembly, a cylinder head line for producing a cylinder head assembly, and a bare engine line provided downstream of these cylinder block line and cylinder head line for producing a bare engine assembly; A dress-up line that is attached to one side of the body assembly line on the downstream side of the bare engine line and that attaches the accessory parts that have already been guaranteed as a single item to the bare engine assembly. Engine finished product flows through the body assembly line Method of assembling a motor vehicle, characterized in that mounted on the vehicle body. 2. The method for assembling a vehicle according to claim 1, wherein a bear engine stock space is disposed between said bare engine line and said dress-up line. 3. The method of assembling a vehicle according to claim 1, wherein a transmission assembly is assembled to the bare engine at the dress-up line. 4. The method for assembling an automobile according to claim 1, wherein the dress-up line receives information on the vehicle body carried into the vehicle body assembly line and, based on the information, transmits the bare engine assembly to the dress-up line. Type and order,
A method of assembling an automobile, comprising determining a mission assembly and an accessory to be assembled to a bare engine assembly. 5. The method for assembling a vehicle according to claim 1, wherein parts are ordered based on vehicle information or engine docking information carried into the vehicle body assembly line.