JPH04141308A - Method and apparatus for working reference hole in car body - Google Patents

Abstract

PURPOSE:To equalize gaps between respective members in a welded and assembled car body by determining any one of respective reference holes for mounting doors, front fender and bonnet as an original reference one to subsequently work to two remaining reference holes. CONSTITUTION:Common reference holes 6A, 6B for mounting a front fender 5 and bonnet in the front section of a car body are worked subsequently in the car body 1 with reference to a reference plane having a door mounting reference hole 3 for mounting a door 2 to the car body 1. To work the reference holes 3, 6A, 6B, abutting pins 18, 19 of a base frame 11 are first adapted to abut against the upper surface of a welded and assembled car body 1 and locate supportingly a base frame 11 to the car body 1. Then, a movable frame 14 is translated in the directions X, Y relative to the base frame 11 so that an abutting part 21a of an abutting member 21 abuts against and engages the reference plane 4. The reference holes 6A, 6B are worked by drilling the welded and assembled car body 1 through guide parts 22a, 23a of guide members 22, 23 under such condition.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for machining vehicle body base Q holes such as reference holes for door attachment, front fender attachment, and bonnet attachment.

(Prior Art) Conventionally, for example, when assembling a bonnet to a car body, the bonnet attached to the car body was attached to the car body. - The position of the reference hole for attachment is detected, and the bonnet is positioned and corrected before being assembled to the vehicle body (for example, see Japanese Patent Laid-Open No. 62-99272). Therefore, reference holes for attaching members such as the bonnet to the vehicle body must be accurately provided.

(Problem to be Solved by the Invention) However, in automobiles, for example, reference holes for door attachment, front fender attachment, bonnet attachment, etc. are formed independently and separately. When assembling the front fender, bonnet, and door to the vehicle body after welding and assembling these reference holes, it may not be possible to keep the gap between the front fender, bonnet, and door within the specified range. .

An object of the present invention is to provide a method and apparatus for machining a vehicle body reference hole that allows gaps between a front fender, a bonnet, and a door to be within a predetermined range.

(Means for Solving the Problem) The invention of claim (1) provides a door mounting reference hole, a front fender mounting reference hole, or a bonnet)/mount (=J) on a vehicle body after welding and assembly. Any one of the basic holes
The invention of claim (2), characterized in that one reference hole is used as a reference, and the remaining two reference holes are characterized by a contact member that contacts a reference surface having a reference hole for attaching a door of a vehicle body after welding assembly, and a front fender. A kite member for making the reference hole for mounting and the bonnet holder (=1) backward, a movable frame integrally provided with the abutment member and the guide part 2, and the movable frame as described above. The vehicle body is configured to include a base frame that supports the vehicle body so as to be movable in parallel within a predetermined range.

(Function) According to the invention of claim (1), any one of the door mounting reference hole, the front fender mounting reference hole, or the bonnet mounting reference hole of the vehicle body after welding and assembly is provided. 1
With one as a reference, the remaining two reference holes are
Accordingly, the relative positional relationship of each part of the shrine is determined by each reference hole.

According to the invention of claim (2), the base frame is first positioned and supported with respect to the vehicle body by bringing the contact member into contact with a reference surface having a reference hole for attaching a door in the vehicle body after welding and assembly. Then, move the movable frame 14 lines relative to the base frame, bring the contact portion 4a into contact with the reference surface having reference holes for door handles A and J, and adjust the movable frame using that reference surface as a reference. Positioning is done. In this state, the front fender attachment reference hole and the bonnet attachment reference hole are post-processed using the guide member.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a car body (so-called white body) after welding and assembly, and the car body 1 has a reference surface 4 having a door mounting reference hole 3 for installing a door 2 formed in advance on the car body 1. L (As a standard, common reference holes 6A and 6B for removing the front fender 5 and bonnet (not shown) are post-processed at the front of the vehicle body.

By this, we will introduce the door 2, front fender 5 and bonnet according to this 4 (t-y6 36A, 6B) (=j, then each part has a good phase H.

The gap between them is uniform within a predetermined range.

Next, a processing device for forming the reference holes 3.6A and 6B will be explained with reference to FIGS. 2 to 6.

] 1 is a base frame, and the rail member attached to the lower surface of the base frame ] 2 The upper part of the movable part +4'13 is movably engaged, and the lower part of the movable part +413 is fixed to the upper surface of the movable frame 14. A movable frame 4 is movably engaged with the rail member 15 and is movable parallel to the base frame 11 in a plane, that is, movably in the X and Y directions.

The base frame 1 includes an abutment pin that comes into contact with the upper surface of the vehicle body 1 after welding and assembly via the arm members 16 and 17.
819 protrudes from the front and rear sides and is positioned and supported with respect to the vehicle body 1.

In addition, on the rear side of the movable frame 4, there is a contact portion 21a that abuts against a reference surface 4 having a reference hole 3 for attaching the door of the vehicle body.
The abutting member 21 having a
The reference hole 6A is provided at the front and rear sides of the .

Guy F portions 4422 and 4422, 23 having the post-processing guy F portions 22a and 2:3a of 6B at their tips are each integrally provided.

To process the reference holes 2.6A and 6B using the above device, first, the contact pins 1819 of the base frame 11 are brought into contact with the two sides of the vehicle body 1 after welding and assembly. The base frame 11 is positioned and supported relative to the base frame 11.

Then, the movable frame 14 is moved parallel to the base frame 11 in the X direction and the Y direction, and the abutting part (the abutting part 21a of the event 21 is connected to the door mounting reference hole 3 of the vehicle body 1 formed in advance). As a result, the movable frame 14 is positioned with reference to the reference surface 4, that is, the door mounting reference hole 3.

In this state, the guide part 22 of the guide part +J'22.23 is used for post-processing the common reference holes 6A and 6B for attaching the front fender 5 and the bonnet (not shown).
Common reference holes 6A and 6B for mounting the front fender 5 and the bonnet are formed in the vehicle body 1 after welding and assembly through the through holes 23a and 23a (see FIG. 5) using a drill D (see FIG. 5).

This creates a common reference hole 6A for attaching the front fender 5 and bonnet to the front and rear sides of the vehicle body 1, using the door attachment reference hole 3 as a reference.

6B is post-processed, and their relative positional relationship is determined.

Then, the bonnet, front fender 4, and door 2 are assembled based on the reference holes 3.6A and 6B.

In this way, common reference holes 6A and 6B for attaching other front fenders 5 and a bonnet (not shown) can be post-processed using the reference plane 4 having the door attachment reference holes 3 of the vehicle body 1 as a reference. Therefore, each reference hole 3.6A, 6
The relative positional relationship of B is determined, and those reference holes 3.6A,
The gaps formed between each door 2, front fender 4, and bonnet that are attached based on 6B are uniform, and the appearance after assembly is very good.

In particular, with respect to the base frame 11 that is positioned and supported by the vehicle body 1 after welding and assembly, the abutting part 21 and the guide member 22.2 are
Since the movable frame 14 in which the reference holes 3.6A and 6B are integrally provided is provided so as to be movable in parallel, even if there is a deviation in the machining position of the reference holes 3.6A and 6B, the entire reference holes 3.6A and 6B will move in parallel. By simply doing this, the gap formed between each member has a substantially --like width, and the width of the gap does not change.

In the above embodiment, the reference holes 6A and 6B for attaching the front fender 4 and the bonnet are shared.
Needless to say, the present invention can also be applied to the case where these reference holes are provided separately and independently.

(Effect of the invention) In the invention of claim (1), since other reference holes are machined using one reference hole as a reference in the vehicle body after welding and assembly, the relative positional relationship of each reference hole is determined, and the reference hole The mutual gaps between the members installed based on this will be uniform.

The invention of claim (2), as described above, allows the movable frame, in which the abutting portion and the guide member are integrally provided, to be movable in parallel to the base frame that is positioned and supported by the vehicle body after welding and assembly. Even if there is a deviation in the position of the reference hole,
By simply moving the entire reference formula in parallel, the gap formed between each member has a width similar to that of -, and the width of the gap does not change, so it looks good.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and Fig. 1 is an explanatory diagram of reference holes for a car body after welding and assembly, Fig. 2 is a partial plan view of a processing device for car body reference holes, and Fig. 3 is the same part. A side view, FIG. 4 is a rear view of the same essential parts, and FIG. 5 is an explanatory diagram of machining of the vehicle body reference hole. 1...Vehicle body 2...Door 3, GA, 6B...Reference hole 5...Front fender 11...Base frame 14... ...Movable frame 21...Abutment part removal 22.23...Guide member L (destruction); Fig. 3 Fig. 5

Claims (2)

[Claims] (1) On the vehicle body after welding and assembly, use any one of the door mounting reference holes, front fender mounting reference holes, or bonnet mounting reference holes of the vehicle body as a reference, and then attach the remaining two
A method for processing a vehicle body reference hole, which is characterized by post-processing two reference holes. (2) A contact member that comes into contact with a reference surface having a reference hole for mounting a door on the vehicle body after welding and assembly; a guide member for post-processing the reference hole for mounting the front fender and the reference hole for mounting the bonnet; Machining of a vehicle body reference hole characterized by having a movable frame integrally provided with a contact member and a guide member, and a base frame that supports the movable frame so as to be movable parallel to the vehicle body within a predetermined range. Device.