JPS639378Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a machine that cuts female threads in parts that have through holes.

Conventionally, in tapping machines in which the workpiece is held by a tap line forming the tap, if the workpiece accumulates within the tap line, it must be removed from the tap line. The removal work was very troublesome because the screws on the chuck had to be loosened in order to remove the tap wire from the chuck. Also, attaching the tap wire to the chuck was similarly troublesome.

Therefore, the purpose of this invention is to make it easier to attach and remove the tap wire from the chuck. A long tap wire 20 is inserted into the guide tube 1, has a tap 21 at its tip, and is detachably connected to the chuck 10 at its rear end, and a motor 6 that applies rotational force to the chuck 10. In the tapping machine, the rear end of the tapping wire 20 has a shape other than circular, and the engaging hole 13 provided in the chuck 10 has a hole 14 formed in the axial direction.
The flat plate 16 provided along the hole 14 makes the cross-sectional shape of the engagement hole 13 non-circular, and the flat plate 16 is pressed by a spring 17.

Therefore, the workpieces to be tapped are inserted into the tap at the tip of the tap wire, and placed one after another inside the tap wire. When a large number of workpieces accumulate in the tap wire, the tap wire is removed from the chuck and processed. The parts can be taken out, and the tap wire can be removed by simply pulling it, and the tap wire can be inserted and engaged into the engagement hole by pushing the tap wire in the chuck direction. Therefore, the above objective can be achieved.

Examples of this invention will be described below with reference to the drawings.

In the figure, an elongated guide tube 1 has a through hole inside and is firmly connected and supported by a body 2 at its lower end. The tip of this guide tube 1 is
A guide tube 3 is fitted therein, and a guide piece 4 for guiding a component supply rod 5 is attached parallel to the guide tube 1.

The body 2 is configured to have a constant angle with the floor surface, and is provided with a motor 6, whose rotational force is transmitted to the chuck 10 via a pulley 7, a belt 8, and a pulley 9.

The chuck 10 is located on an extension line of the guide cylinder 1, is screwed to the rotating shaft 11, has a conical groove 12 formed on the guide cylinder side, and has an engagement hole 13 in the center of the conical groove 12, that is, in the axial center of the chuck 10. is formed in this engagement hole 13, and a tap wire 2 described below is connected to the engagement hole 13.
The rear end of 0 is inserted and engaged. The engagement hole 13 is
It consists of a semicircular hole 14 formed in the axial direction of the chuck and a flat plate 16 housed in a vertical groove formed in the axial direction along the hole 14, and the cross-sectional shape of the engaging hole 13 is not circular. It is said that The flat plate 16 is pressed toward the hole 14 by a spring 17, and the pressing force of the spring 17 can be varied by a screw 18.

The tap wire 20 is provided with a tap 21 at its tip, the lower part thereof is longer than the guide cylinder 1, and the rear end has a shape other than a circle, that is, a half cross section, in order to engage with the engagement hole 13 of the chuck 10. It has a circular shape. This tap wire 20 is inserted into the guide tube 1, and its rear end is engaged with the engagement hole 13 of the chuck 10. When the motor 6 is rotated, the tap wire 20 rotates, and when the processed part A attached to the parts supply rod 5 is advanced along the guide piece 4 to the tap 21, the processed part A has a female thread. The processed parts A are stored in the guide tube 1 while being held by the tap wire 20, and if the number reaches, for example, 80, it will no longer be possible to supply the processed parts A, so the operator stops the motor 6 and taps the parts A. Check line 20 to 10
The processed parts are taken out and dropped into the parts box 23 below, where they are stored. Then, the rear end of the tap wire 20 is again engaged with the engagement hole 13 of the chuck 10, and the same operation as described above is performed.

The rear end of the tap wire 20 is inserted into the engagement hole 1 of the chuck 10.
When engaging with tap wire 20, it is easy to do so by simply inserting the flat plate 14 into the engagement hole 13, which displaces the flat plate 14 against the spring 17. In addition, since the rear end of the tap wire 20 is clamped by the flat plate 14, it has the advantage that no installation operations are required.

Note that the component supply rod 5 to which the processed part A is attached must have a known mechanical configuration so that the processed part A is not rotated during tapping.

As described above, according to this invention, the tap wire can be removed by pulling it in the direction opposite to the chuck, and can be easily attached to the engaging hole of the chuck by pushing it in the direction of the chuck.

[Brief explanation of the drawing]

FIG. 1 is a front view of this invention, FIG. 2 is an enlarged sectional view of the main part, and FIGS. 3 to 7 are explanatory views of the chuck. 1...Guide tube, 2...Body, 6...Motor, 10...Chick, 20...Tap wire, 21
...Tap.

Claims (1)

[Claims for Utility Model Registration] An elongated guide tube 1, a body 2 that supports the guide tube 1, which is inserted into the guide tube 1, has a tap 21 at its tip, and has a rear end that can be attached to and detached from the chuck 10. Long tap wires 20 that are freely connected
and a motor 6 that provides rotational force to the chuck 10.
A tapping machine comprising: a rear end of the tapping wire 20 having a shape other than a circular shape, a hole 14 provided in the chuck 10 that forms the engagement hole 13 in the axial direction, and a hole 14 provided along the hole 14. The tapping machine is characterized in that the cross-sectional shape of the engagement hole 13 is made into a shape other than circular by a flat plate 16, and the flat plate 16 is pressed by a spring 17.