JPS59141398A - Hanger jig for bicycle - Google Patents

Abstract

PURPOSE:To provide a jig that facilitates a normal welding operation by fastening pipe frames to arms which can be swiveled and fixed in X-, Y-, Z-directions in a pipe frame hanger for a bicycle to be suspended from a rail. CONSTITUTION:A hanger is constituted of the 1st arm A in an X direction which is freely rotatable and is moved by means of a roller 1 in a rail 3, the 2nd arm B which can be freely swiveled and fixed in a Y direction, the 3rd arm C which can be freely swiveled and fixed in a Z direction and a clamping mechanism 28 for holding the work. Frames a, b are fitted in the groove 32 of the mechanism 28, is fastened by hinge mechanisms 33, 34, 35, and is held easily in a free position manually by clutch mechanisms 7, 18. The hanger is stopped in the prescribed position of the rail by the operation of an air cylinder 4. The tack welded pipe frames a, b are regular-welded in a free position. The welding operation is thus improved considerably.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece nodding jig in a bath welding process for assembling a two-wheeled vehicle.

Since motorcycle frames are manufactured by combining various types of ribs, in the past multiple workers had to perform all the welding work on workpieces that were assembled into complex shapes and temporarily attached at their respective workbenches. For this reason, each workbench VC must be equipped with all chute equipment to move the workpiece order θ (to the next process,
The movement is done manually or functionally, but the work load is excessive because it involves manual work in addition to bathing, and it also requires wasted time, which inevitably reduces work efficiency. Workpieces may be damaged due to handling, resulting in defective products.
Are you particularly skilled at welding vertical parts in bath welding work? ]--Therefore, in order to bring the welded part into a position favorable for the work, there were disadvantages such as the need to move the workpiece to the next work station and stabilize it using a dedicated jig.

The invention eliminates the disadvantages of the prior art.1. - Suspend the workpiece to which the s/metal eve is temporarily attached in the air, and tilt the workpiece back and forth to the right in a horizontal direction to freely change its posture and hold it stably in that position. This makes contact work easier and eliminates the need for workpiece transfer work.
The first arm along the axial direction, the second arm along the Y-axis direction, and the third arm along the Z-axis direction. The 21m3 arms are connected together in order, and each arm is equipped with a mechanism that can rotate independently and stop and stabilize at any rotation amount, and the first arm is equipped with a suspension that moves horizontally along the transfer rail. Equipped with a lower mechanism,
The third arm is fully equipped with a clamp mechanism for holding the workpiece.

An example of an embodiment of the present invention will be described with reference to all the drawings.

As shown in FIG.
It is composed of a first arm A along the axial direction, a second arm B along the Y-axis direction perpendicular to the first arm A, and a third arm C extending in the Z-axis direction perpendicular to the second arm B. Ru.

In the drawing, the first arm A corresponds to the shape of the workpiece a to be suspended.
5. This shows a completely curved midway so as not to provide support to changes in posture, but as a general rule, it should be aligned vertically.
The upper end thereof is rotatably supported by the hanging base material (1) and is suspended downward.

(2) is a hanging part of the inventive jig that is fixed above the working part, and the hanging part (2) is a connecting member (2a) on one side that also serves as a stopper ξ-, and a connecting member (2a) on the other side. Fixed between material (2b) 1
It is formed by a pair of rails (3) (3), and these rails +31 (for 31, the above-mentioned i!1 arm A suspension base material (1
) is mounted so that it can run by the rollers (la)ic, and an air cylinder (4) is provided on the side of the connecting member (2a) that also serves as the - in the strut horn, and the piston rod (4a) is mounted with the middle as the axis. As will be described later, in the operation of the present invention, the suspension base material (1) is moved to the left in Figure 1, so that the first arm A is as shown by the phantom line in the figure. rail (3)
), the signal (b) from a limit switch, etc., detects this when the 7 linder (4
)? It is activated and swings as shown by the dotted line in the same figure (5), and the first arm A is connected to the metal receiver member (6) at its tip (10).
Thus, the first arm A can be freely rotated against the oppression, but under normal conditions, the first arm A is stopped stably and does not move erratically due to the oppression.

The second arm B has a clutch mechanism (7) in the middle consisting of a pair of engagers (9a) and (9b) that are engaged with each other under the force of a spring (8), and one retainer (9a). Ikube V, first arm A
are integrally connected perpendicularly to the lower end of the other engager (9b
) is constructed by integrally connecting with a third arm C, which will be described later.

That is, as shown in FIG. 3, a strip (11) is inserted through a cylindrical tube (10) connected orthogonally to the lower end of the first arm A. At the boss, attach the shaft piece (
11) so as to be movable in the length direction, and the pin (13) inserted through the elongated hole a21 provided in the boss of the cylindrical pipe (■0) and the shaft piece (111 and the engager (9a)) 9a1 is the first engaging element (9a1 is the first
The VC is integrally connected to the arm A, but is movable in the axial direction through the elongated hole tt21, and the retainer (9al) acts on the resilient spring (8) via the intervening portion (8a). Then, the engaging element (9aLe) was pressed into engagement with the other engaging element (9b).

The engaging element (9b) is inserted into the shaft piece U together with the retaining element (9a) so that the V-shaped uneven strip on the end face thereof faces the engaging element (9a), and this is a component of the third arm C, which will be described later. The cylindrical part (141) which is integrally provided with the cylindrical pipe (19) and protrudes in the right angle direction and the locking screw (19) integrally connects the cylindrical part (2) and the boss of the engaging element (9b).

In addition, a flange 1161'i is provided at the end of the shaft piece +11) on the retainer (9b) side, and this is brought into contact with the engager (9b), so that the shaft piece (marked with spring (8)) cannot be removed by pressure. The pressure of the spring (8), which prevents the clutch from coming out and engages the clutch, can be freely adjusted by advancing and retreating the α force of a nut screwed into the shaft.

Like the second arm B, the third arm C has a clutch mechanism (1 stamp) in the middle, and one side of the clutch mechanism 0 &
It is connected orthogonally to the second arm B by a cylindrical tube U→ integrated with 41, and a cylindrical tube (II), a shaft piece (20) that is completely inserted into the cylindrical tube tllN, and a pair of engagers inserted therein. (21a)
(21bl, cylindrical pipe (191) and retainer (21al) and shaft piece U
The resilient spring (24,
The flange C, a of the shaft piece (A) terminal, the elongated hole for movement of the retainer (21a) '26), and the nut 127) u@2 are the same as the configuration of the arm B, so detailed explanation thereof will be omitted. , 3rd
The terminal on the side of Yako (21b) in arm C is Yako (21b).
The clamp mechanism (2) for holding the workpiece a at the boss of b)
) was protruded from the retaining plate constituting the sickle, and was inserted into the next cylinder pipe (to), and the cylinder pipe (c) and the boss of the engaging element (21bl) were integrally connected with the screw c) 1). The workpiece holding clamp machine 5 (2S) and the engager (21bl) operate integrally.

A clamp mechanism for holding the workpiece ((G) is a holding plate U9 having two grooves ts21t on the upper surface for accommodating and holding the pipe material of the workpiece a, as shown in FIG. 4); It opens and closes by pivoting on the frame pipe, and it consists of a holding plate that immovably holds the frame pipe housed in the concave groove. Set up a place and hold it with the outer hook part C3 of M (to).
5+ to ensure that the workpiece a is held by the holding plate (to). It should be noted that the clamping mechanism of the first arm A and the second arm A are suppressed by Reno (5). The rotating and stopping stabilizing mechanism in the m3 arms B and C as well as the clamp mechanism for holding the workpiece (the brain is not limited to the illustrated example mechanism and any other suitable device may be used).

Next, the state of use of the hanger jig according to the second aspect of the present invention will be explained in detail.

above), C sea urchin X, Y, Z lll11 direction V
Crcr 5 jJ l, A jig constructed by connecting the 2nd and 3rd arms A, B, and C is attached to the rail (3
) and a holding clamp mechanism integrated with the jig (to)
After the framework 11f of the two-wheeled vehicle shown in Fig. 5 is temporarily attached with pipes and other constituent materials, the suspension member (1) of the first arm A is moved along the rail (3) to the terminal, and the cylinder ( When 4) is activated, the first arm A is clamped between the tip of the reno (5) and the receiving member (6) to stabilize it so that it does not move and to prevent the ml arm A from rotating accidentally. Brake.

In this state, a contact is made at a predetermined position, for example, the thick black line C' shown in FIG. It is extremely difficult to perform I'E work in this position. Therefore, conventionally, the workpiece a has been sequentially transferred to the workbench in a suitable position for the work, fixed with a special jig, and the required parts welded. Good friend.

However, according to the present invention, the first . Second. Third arm A, B.

Since the CK Yoshi jig was configured, the workpiece a suspended in the air
For example, when moving the position of horizontally, use
5), the first arm A rotates in any direction to freely allow movement in the horizontal direction, and when tilting the workpiece a'r in the front-rear direction, the clutch mechanism of the second arm B ( By rotating the engager (9b) in step 7), the engager (9a) that engages with the V-shaped concavo-convex strip is pressed and moved against the spring (8) pressure so that the concave-convex mesh is disengaged, and the workpiece is freely moved back and forth. Furthermore, when the warp a is tilted to the left and right, the clutch mechanism (11O) of the third arm C is fully automatically released and the engager (21b) is rotated to prevent the left and right tilting. Workpiece a' can be moved freely, and the horizontal movement, back and forth, left and right Q tilting of workpiece a can be operated in a complex manner.
The lead worker position can be set in any posture that is advantageous for welding work, and the rotating parts of the six arms A, B, and C are stopped and stabilized so that they do not move unnecessarily in normal conditions, making welding work easier. I made it.

In this way, the jig according to the present study has the first . Second. The third arm is the main body, and the first arm is suspended so as to move in the horizontal direction to carry a workpiece. The 2nd and 3rd arms rotate freely in each direction, but in normal conditions they are stopped and stabilized.
During welding work, the position and posture of the workpiece can be freely and easily changed in the air, and the workpiece can be stabilized in that state. This saves the labor and equipment required to move the workbench to the workbench each time the posture is changed, as in the conventional method. This has the effect of significantly improving the efficiency of welding work by eliminating the disadvantages caused by transportation.

[Brief explanation of the drawing]

The drawings show an example of an embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is a sectional view taken along the line II-II, and FIG. 3 is a cutaway plan view of the second and third arms. FIG. 4 is a perspective view of a clamp mechanism for holding a workpiece, and FIG. 5 is a perspective view of a framework of a two-wheeled vehicle. A...First application B,...Second arm C...Third arm (1)...Gi arm suspension base material (3)...Transfer rail: 128)...Work Retaining flange mechanism a...Two-wheeled vehicle framework patent applicant: 2 people other than Honda Motor Co., Ltd. -

Claims (1)

[Claims] A first arm along the X-axis direction, a second arm along the Y-axis direction, and a third axis along the Z-axis direction are at. The second and third arms are connected together in that order, and each arm is equipped with a mechanism that allows it to rotate independently and to stop and stabilize at any amount of rotation, and the first arm has a mechanism that allows it to rotate horizontally along the transfer rail. A jig for two-wheeled vehicles that is equipped with a suspension mechanism for transportation and a cranzo mechanism for holding soaks on the third arm.