JPS6135388Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for gripping a pipe in order to process the pipe in an industry that uses pipes to manufacture various products or parts.

Recently, a machine that can perform both hollowing and drilling on pipes has been developed, but since this machine only has one pipe chuck that faces in the direction of movement of the moving platen, it can be used both for hollowing and for drilling. In some cases, there was the inconvenience of having to change the mounting position of the pipe chuck.

The present invention was made to solve this drawback, and it is possible to attach and detach a second pipe chuck perpendicular to the first pipe chuck facing in the direction of movement of the movable plate, and to open the chuck without changing the position of the chuck. It is an object of the present invention to provide a pipe gripping device for a pipe processing machine that is capable of performing both drilling and beveling processing.

Next, an example of the implementation of the device related to the present invention will be explained based on the drawings.

Figures 1 and 2 show a pipe processing machine employing this device, with reference numeral 1 being a machine stand, on which a base 3 held at a predetermined height by legs 2 is provided. be. Reference numeral 4 denotes a tool post attached to one side of the base 3, which decelerates the rotation transmitted from the motor 5 to the input shaft 6 as desired using a worm and a worm gear (not shown in the drawings) and takes it out from the output shaft 7. A machine is used, and its output shaft 7 is used as a main shaft 7 to which a cutter, which will be described later, is attached. Reference numeral 8 denotes a drilling knife, which has a chuck 9 attached to the main shaft 7, and this chuck 9.
Attach/detach. 10 is a beveling knife, socket 1
1 to attach it to the main shaft 7. 12 is a hollow knife,
One end is attached to the main shaft 7, and the other end is supported by the support metal 13. Reference numeral 14 denotes a turning board for turning the main shaft 7 from the front side to the side, one end of which is connected to a central shaft 1 provided directly below the center a of the cutting tool when using the cutting tool 12.
5, and the other end thereof is provided with a screw 17 that engages with an arcuate long hole 16 provided in the base 3 centering on the central axis 15, and fixes the turning table 14 in any position by fastening. . Reference numeral 18 denotes a guide provided on the turning table 14 to support a movable plate 19 so as to be able to move forward and backward, and a feeding means 20 such as a screw is engaged with the movable plate 19. 21 is a first pipe chuck attached to the movable plate 19 by an angle adjustment plate 22, and has a fixed lower jaw b fixed to the angle adjustment plate 22 and having an upward semicircular hole, and one end is pivoted to this lower jaw b. The free end of the movable jaw c is connected to a lever-type fastener 2.
3, and for gripping thin pipes, replace the spare half bushing (not shown in the drawing). Further, the angle adjustment plate 22 described above is located on the central axis 15 side of the turning table 14,
A shaft 24 is attached to the movable plate 19, and an arcuate elongated hole 25 centered on the shaft 24 is provided at the other end, and a set screw 26 is engaged with the arcuate elongated hole 25. Reference numeral 27 designates a second pipe chuck, and a horizontally long fixed front jaw b having a groove is provided on one side of a mounting portion 28 to be gripped by the first pipe chuck 21 so as to be perpendicular to the first pipe chuck 21. Fit the square-shaped movable rear jaw frames e, e on both sides, and then screw the feed screws 29, 29 onto the back edges of the jaw frames e, e, respectively, and the feed screws 29, 29 will be described later. The front and rear jaws d, e, and e are opened and closed by interlocking rotation using an interlocking member. A support plate 30 is attached to the other end of the mounting portion 28 and supports the feed screws 29, 29, and a shaft 33 supported by bearings 31, 31 and rotated by a handle 32 is provided on the outside thereof. be. 34, 34 and 35, 35 are interlocking members of the feed screws 29, 29, using gears such as screws or bevels, one of them 34, 34 is fixed to the terminal of the feed screws 29, 29, and the other 35, 35
is fixed to the shaft 33.

In the apparatus configured as described above, with the second pipe chuck 27 not attached to the first pipe chuck 21, the turning table 14 is directly opposed to the main shaft 7 as shown in FIG. If you remove the lever-type fastener 23, open the movable upper jaw c, place the pipe 9 on the fixed lower jaw b, close the upper jaw c, and press the free end of the upper jaw b with the lever-type fastener 23. The pipe 9 is held by the first pipe chuck 21 so as to directly face the main shaft 7. Therefore, if a beveling cutter 10 is attached to the main shaft 7 as shown in FIG. 4 and rotated by the motor 5, and the pipe 9 is fed out with respect to the cutter 10 by the feeding means 20, an opening is formed on the outside of the pipe end. Preemption is applied.

Further, the first pipe chuck 21 to which the second pipe chuck 27 is not attached is moved and fixed by rotating the turning table 14 to the position shown in FIG. Attach the cutter 12, have the tip supported by the support metal 13, and attach the pipe 9 to the first pipe chuck 21.
When gripped, the pipe 9 will be perpendicular to the cutting tool 12. Therefore, in this state, when the cutter 12 is rotated and the pipe 9 is fed out by the feeding means 20, the pipe end is hollowed at right angles to the pipe 9. However, due to the rotation of the lathe 14, the hollowed blade 1
By tilting the pipe 9 relative to 2, diagonal hollowing can also be performed.

Next, with the first pipe chuck 21 directly facing the main shaft 7, the first pipe chuck 2
Open the upper jaw c of 1, place the attachment part 28 of the second pipe chuck 27 on the lower jaw b, close the upper jaw c, and tighten with the lever-type fastener 23.
The pipe chuck 27 is the first pipe chuck 2.
As shown in FIGS. 1 and 2 of the drawings, it can be attached in a minute or two to hold the pipe 9 at right angles to the first pipe chuck 21. Therefore, in this state, the front jaw d of the second pipe chuck 27
If the pipe 9 is inserted between the front jaw frame d and the rear jaw frame e, and the rear jaw frames e, e are pressed by the interlocking screws 29, 29, the pipe 9 will be inserted between the front jaw frame d and the rear jaw frame e,
e and is supported in front of the main shaft 7 so as to be orthogonal thereto. When the pipe support is completed in this manner, the drilling blade 8 is attached to the main shaft 7 and rotated, and the pipe 9 is fed out by the feeding means 20, thereby drilling a hole perpendicularly to the outer circumference of the pipe 9. However, due to the rotation of the lathe 14, the pipe 9
By tilting the hole, the pipe 9 can be drilled at an angle.

The device according to the present invention includes a first pipe chuck in which a movable upper jaw is hinged to a fixed lower jaw attached to a movable plate, a pipe is clamped between the upper and lower jaws, and the pipe is tightened by a lever type fastener; Mounting in which a movable rear jaw frame is supported by a fixed front jaw, a pipe is held between both jaws, and tightened by an interlocking screw, and a first pipe chuck is gripped by a first pipe chuck on the outside of the central part of the fixed jaw. Since the first pipe chuck is provided with a second pipe chuck whose portion is provided at a right angle, when the pipe is held by the first pipe chuck, the pipe is fed in the axial direction by the feeding means, and the pipe and the main shaft are If the shaft centers are aligned and a bevel cutter is attached to the main shaft, the pipe can be beveled.If the pipe is orthogonally or obliquely crossed to the main shaft and a cutter is attached to the main shaft, the pipe can be cut. If you attach a second pipe chuck to the first pipe chuck, hold the pipe at right angles to the first chuck, and attach a drilling knife to the main shaft, you can drill a hole in the pipe. It has the versatility to perform drilling and beveling, and since the second chuck can be attached and detached from the first chuck in a short time of 1 to 2 minutes,
It is effective not only in greatly economizing equipment and maintenance, but also in improving workability and increasing efficiency.Also, since the second pipe chuck holds the pipe on both sides and makes a hole in the middle, Unlike a cantilever, the pipe is stable without swinging, so it has the unique effect of making it possible to drill holes particularly accurately.

[Brief explanation of the drawing]

Fig. 1 is a side view of a pipe processing machine employing the device according to the present invention used for drilling holes, and Fig. 2 is a plan view of the same. Figure 3 is a plan view of the state used for hollowing. FIG. 4 is a plan view of the pipe chuck used for groove preparation, and FIG. 5 is a perspective view showing the second pipe chuck. Figure 6 is the first
FIG. 3 is a perspective view of the pipe chuck of FIG. In the figure, 19 is a movable plate, 21 is a first pipe chuck, b is a fixed lower jaw, c is a movable upper jaw, 23
27 is a lever type fastener, 27 is a second pipe chuck, d is a fixed front jaw, e and e are movable rear jaw frames, 28 is a mounting portion, and 29, 29 are interlocking screws.

Claims (1)

[Scope of utility model registration request] A first pipe chuck includes a lower jaw attached to a movable plate, an upper jaw hinged to the lower jaw, a lever-type fastener that presses the upper jaw toward the lower jaw, and a fixed front jaw. a pair of movable jaws supported on both sides of the fixed jaw, a pair of interlocking screws that move the movable jaws forward and backward with respect to the fixed jaw, and a pair of interlocking screws extending from the center of the fixed jaw at right angles to the front side. A pipe gripping device for a pipe processing machine, comprising: a second pipe chuck having a mounting portion that is gripped by the first pipe chuck;