JPS5853191Y2 - Thrust receiving device in friction welding machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a friction welding machine that presses a pair of processed materials such as bar materials together using frictional heat.

In such a friction welding machine, a pair of workpieces are brought into contact with each other on one axis while applying a large thrust, and frictional heat is generated by frictional rotation between the opposing parts, and this is used to weld both sleeves. Because the materials are pressed together,
In order to perform pressure welding reliably, a thrust receiving device is required that receives the thrust force applied to the workpiece and prevents the workpiece from moving in the axial direction.

However, the lengths of the workpieces vary, and it is necessary to change the position of the thrust receiving stopper depending on the length, especially when pressure welding is performed continuously on workpieces with significantly different lengths. In some cases, dealing with such problems is extremely troublesome and time-consuming.

The purpose of this invention is to solve these problems and to develop a thrust receiving device for friction welding machines that can quickly cope with large changes in the length of the workpiece and perform pressure welding efficiently. It is about providing.

Hereinafter, an embodiment embodying this invention will be explained based on the drawings. In the drawings, 1 is a stationary chuck that grips and fixes one of the workpieces 2a, and 3 is a chuck that holds the other workpiece 2b' on the fixed side. It is a rotary chuck that grips and fixes the workpiece 2a on the same axis as the workpiece 2a, and is rotated at high speed by an appropriate drive source, and moves along the axis in the direction of the fixed side workpiece 2a. , 2b are designed to generate frictional rotation between the end faces of the sleeves 2a and 2b, whereby both sleeve materials 2a and 2b are frictionally welded together.

Therefore, a large thrust is applied to the workpiece 2a on the stationary side, and the configuration of a device for receiving this thrust will be described below.

Reference numeral 4 denotes a cylindrical auxiliary stopper disposed on the same axis as the axis of frictional rotation, and is reciprocated in the axial direction by expansion and contraction of a hydraulic cylinder 5 (which may be an air cylinder).

Reference numeral 6 denotes an adjustment rod whose one end is fixed to the front end of the auxiliary stopper 4 by a bolt 7 and a connecting fitting 8, and whose other end can come into contact with the rear end surface of the fixed workpiece 2a.

A large number of adjustment rods 6 having different lengths are prepared, and can be easily replaced by removing the bolts 7 and the connecting fittings 8.

9 is a roller for movably supporting the adjusting rod 6.

Therefore, the thrust from the workpiece 2a is transmitted to the auxiliary stopper 4 via the adjustment rod 6.

Reference numeral 10 denotes a plurality of stopper plates provided behind the auxiliary stopper 4, one end of which can be rotated and moved in the axial direction by a single shaft 11 parallel to the auxiliary stopper 4, as shown in FIG. It can be placed in a position where the other end faces the auxiliary stopper 4 and in a position where it is retracted upward from the facing position, and when it is placed in the facing position, the rear end surface of the auxiliary stopper 4 comes into contact with the auxiliary stopper 4. It is possible.

Further, the rotation of the stopper plate 10 to the two positions mentioned above is performed simultaneously on all the plates, and when the auxiliary stopper 4 corresponds to any one of the stopper plates 10, it is indicated by the two-dot chain line in FIG. As shown, its corresponding stop plate 10 is prevented from pivoting downward in the plane of the auxiliary stop 4.

Reference numeral 12 denotes a pushing rod provided on the same axis as the auxiliary stopper 4 at the rear position of the group of stopper plates 10, and when the stopper plate 10 is in the lower position, the push rod 12 is provided on the rear surface of the rearmost stopper plate 10. A forward position in which the stopper plates 10 are brought into contact and pushed forward, and the frontmost one of the stopper plates 10 in the lower position is brought into contact with the auxiliary stopper 4, and the stopper plate 10
It is designed to be able to move between a rear position where it is separated rearward from the group, and when it moves to the front position, the thrust force transmitted from the workpiece 2a via the adjustment rod 6, the auxiliary stopper 4 and the stopper plate 10 is It is finally accepted.

Now, FIG. 1 shows a state in which the adjustment rod 6 is in contact with the fixed side workpiece 2a, the push rod 12 is moved forward, and the stopper plate 10 is in contact with the auxiliary stopper 4, that is, from the fixed side workpiece 2a. This shows the state in which it can receive thrust.

In this state, when the rotating workpiece 2b is rotated at high speed via the rotating chuck 3 and moved to the stationary side to bring the rotating workpiece 2b into contact with the stationary workpiece 2a, both workpieces 2a, Frictional rotation occurs between the opposing parts 2b, and friction welding is performed.

Next, when applying pressure welding to a workpiece having a different length from the above, first the push rod 12 is moved back to separate it from the stopper plate 10, and after releasing the stopper plate 10, the group of stopper plates 10 is They are all rotated to the upper retracted position to open the rear of the auxiliary stopper 4, and then the hydraulic cylinder 5 is contracted to move the auxiliary stopper 4 rearward and the adjustment rod 6 to be separated from the work piece.

In this state, the press-welded work piece is held in the chuck 1.
, 3, and grip and fix the new work piece to the chuck 1.3.

Then, remove the bolt 7 and the connecting fitting 8 and adjust the adjustment rod 6.
Then, another adjusting rod 6 having an appropriate length according to the length of the stationary work piece 2a is fixed to the tip of the auxiliary stopper 4 using the bolt 7 and the connecting fitting 8.

That is, when the tip of the adjustment rod 6 is brought into contact with the rear end surface of the stationary workpiece 2a, the rear end surface of the auxiliary stopper 4 is brought into contact with at least the rearmost stopper plate 10, so that thrust can be transmitted to the push rod 12. In addition, when the workpiece 2a is short, a long adjustment rod 6 is used, and when it is long, a short adjustment rod 6 is used.

Note that the length variation range of the workpiece 2a is the same as that of the stopper plate 1.
If the width is smaller than the width of group 0, there is no need to replace the adjustment rod 6.

Next, the hydraulic cylinder 5 is extended to bring the tip of the adjustment rod 6 into contact with the rear end surface of the stationary workpiece 2a, and then the stopper plates 10 are all rotated downward at the same time.

In this way, the stopper plate 10 corresponding to the auxiliary stopper 4 is prevented from rotating downward by the auxiliary stopper 4, and only the stopper plate 10 behind the auxiliary stopper 4 is connected to the auxiliary stopper 4 and the push rod 10.
is placed in a lower position opposite to.

Therefore, a gap equal to or less than the thickness of 101 stopper plates is formed between the auxiliary stopper 4 and the stopper plate 10 at the lower position.

Thereafter, the push rod 12 is moved forward by that gap to bring the stopper plate 10 into contact with the rear end surface of the auxiliary stopper 4.

Incidentally, if the stationary work piece 2a is quite long and interferes with the roller 9, the interfering roller is removed.

Therefore, at this stage, it becomes possible to receive the thrust force applied to the stationary side work piece 2a, and friction welding can be performed continuously.

Even if the length of the workpiece varies as described above, by replacing the adjusting rod 6, it is possible to quickly deal with the problem and perform friction welding efficiently.

As exemplified in the above embodiments, this invention has adjustable rods of different lengths at the tips between one workpiece and a push rod capable of receiving the thrust applied to the other workpiece. An auxiliary stopper is provided that is detachable and movable on the same axis as the axis of relative rotation, and an appropriate number of stoppers can be selectively inserted between the tail end of the auxiliary stopper and the push rod. By installing the stopper plate, even if there is a large variation in the length of the workpiece, it can be quickly dealt with and the pressure welding process can be performed efficiently. This is an excellent idea for industrial use.

It should be noted that this invention is not limited to the above-mentioned embodiments, and may be modified without departing from the spirit of the invention, such as omitting the stopper plate group, for example.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view showing a thrust receiving device embodying this invention, and FIG. 2 is a sectional view taken along the line 2--2 in FIG.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of relatively rotating workpieces are brought into contact with each other while applying a thrust on one axis to generate frictional heat between the opposing parts,
In a friction welding machine that performs pressure welding using frictional heat generation, a long wall is installed at the tip between one workpiece and a push rod that can receive the thrust applied to the other workpiece. An auxiliary stopper is disposed in which an adjusting rod is removable and movable on the same axis as the axis of relative rotation, and an appropriate number of adjustment rods are provided between the tail end of the auxiliary stopper and the pushing rod. A thrust receiving device for a friction welding machine, characterized in that it is provided with a stopper plate that can be inserted automatically. 2 One end of the plurality of stopper plates is rotatably supported by a shaft arranged parallel to the axis of relative rotation, and the stopper plate has a position opposite to the auxiliary stopper and the pushing rod, and a position opposite thereto. A thrust receiving device for a friction welding machine according to claim 1, which is movable between a position and an upwardly retracted position.