JPS6237609Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus that can automatically thread threads on a shaft to be machined such as a roller post.

For example, a roller post constitutes a part of a video tape recorder, and as shown in Fig. 6, a disk Pa and a large-diameter joint Pb are press-fitted into the middle part of a shaft P. A screw is provided on the body, a roller is fitted into the rear end shaft portion on the left side of the disk, and the shaft is screwed to the support body in an upright state as a joint body. By the way, the thread processing of the Pb bonded body has conventionally been performed by manual rolling, which not only makes the processing work inefficient, but also causes variations in the product, which requires inspection, and The threaded part of the top was prone to wear and needed repair in a short period of time.

An object of the present invention is to provide a thread processing device for a shaft to be machined that enables automation of thread processing to facilitate mass production of products, and also allows for easy maintenance without product variations.

The thread processing device according to the present invention includes a chuck device that supports a shaft to be machined with a chuck portion, a chute that guides the shaft to be machined, a supply device for the shaft to be machined, and a driving means for moving the chuck portion on the base. The machine is equipped with a movable table that is movable back and forth and left and right, and a thread cutting tool that cuts threads on a shaft to be machined attached to the chuck, and a finishing tool that aligns the threads. The chute guides the shaft to be processed and is removably held by a holding means at the extreme end on the discharge side. The supply device has a supply shaft, which takes out the shaft to be processed held in the chute and supplies it to the chuck portion. The position change of the supply shaft from the take-out position to the supply position is performed by the supply shaft operating means, and the movement toward the chute and chuck portion side for take-out and supply, that is, forward movement, is performed by the pushing means.

Hereinafter, as an embodiment of the present invention, a case where the present invention is applied to a threading device for a roller post will be explained based on the drawings.

1 to 3, a chuck device 2 is provided on one side (left side in FIG. 1) of a base 1, and a chuck portion 2a of this device supports the rear end side of a roller post P. At the upper right side of this chuck device in FIG. 2, there is provided a charging container 3 into which the roller post P before threading is placed. There is. The roller posts P in the charging container 3 are successively guided downward through this chute, and the roller post located at the lowest position rotates the pin 5 into the notch 4a at the lower end of the chute as shown in FIGS. It is releasably held by a centrally mounted holding hook 6. This holding hook is always biased clockwise by a spring 7. A guide groove 4b is formed on the side surface of the chute 4 over its entire length, and the tip shaft portion of the roller post P on the combined body Pb side projects from this guide groove. The center of the chuck portion 2a is located on the extension line of the guide groove 4b.

The opposite side of the chuck part 2a of the chuck device (the first
A supply device 8 for roller posts P is provided on the right side of the figure. A supply shaft 9 in this supply device is attached to a holder 11 fixed to a support plate 10 so as to be movable back and forth. The supply shaft 9 has an insertion hole 9a (FIG. 4) provided in the axial center of the tip. The tip of this supply shaft is located opposite the roller post P located at the lowest part of the chute 4, and the tip shaft of the roller post can be inserted and held in the insertion hole 9a by advancing the supply shaft 9 as the extrusion means pushes out. It is. As shown in FIG. 1, the extrusion plate 12 in the extrusion means has a shaft 1 attached to a bearing portion 13 whose upper end protrudes from the support plate 10.
4 is rotatably attached, and the rear end of the supply shaft 9 can be pushed forward at the lower end. A spring force is applied to the extrusion plate 12 in a counterclockwise direction about a shaft 14 by a spring plate 15 connected to the upper end thereof. The upper end of the spring plate 15 is attached to a support rod 17 around which a spring 16 is wound. The tip of a ram 19 of a cylinder 18 is fixed to the intermediate portion of the extrusion plate 12, and this cylinder is horizontally attached to a fixed plate 11a projecting from the holder 11. Therefore, the supply shaft 9 can be moved back and forth via the extrusion plate 12 as the ram 19 of the cylinder expands and contracts. Further, the holder 11 can be moved up and down by the operating means, and with this up and down movement, the supply shaft 9 can be changed in position from the insertion and holding position of the roller post P to the center of the chuck portion 2a. That is, the support plate 10 is formed into an L-shape in plan view, and the mounting portion 10a is fixed to the sliding body 20. This sliding body is connected to a guide plate 22 attached to a fixed plate 21 that stands up on the chuck device 2.
It is possible to slide vertically along the guide groove 22a. The sliding body 20 has a ram 24 of a cylinder 23 that is fixed to the fixed plate 21 at its upper end in an upright state.
It is supported at the lower end of. Therefore, as the sliding body 20 and the support plate 10 move up and down as the ram 24 of the cylinder expands and contracts, the holder 11 and the supply shaft 9 move up and down.

In addition, in FIGS. 1 to 3, on the other side of the base 1 (on the right side of FIG. 1) is a movable base 2 that is movable in the front and rear and left and right directions by drive means (not shown).
5 is attached. A first adjustment table 26 is provided on the movable table and is movable in the front-rear direction (vertical direction in FIG. 3) along the guide groove 25a, and the position of the adjustment table is adjusted using a knob 27. Second adjustment tables 28 and 28a are slidably fitted into a slide portion 26a provided over the entire length in the longitudinal direction (horizontal direction in FIGS. 2 and 3) on this adjustment table, and the knob 29
It is possible to adjust the position of the adjustment table. Support stands 30, 30a are attached on both second adjustment stands 28, 28a, respectively, and U-shaped holding stands 31, 31a are attached to the front surface of each support stand so that their positions can be adjusted up and down. A finishing tool 34 for aligning thread threads with a thread cutting tool 33 is horizontally attached to each holding table 31, 31a by a bolt 32. Both cutting tools are positioned across the axis L (FIG. 3) passing through the center of the chuck portion 2a, and the finishing tool 34 is located somewhat above the thread cutting tool 33 (FIG. 2).

Next, threading of the roller post P will be explained.

First, the supply shaft 9 is pushed out from the position shown by the solid line in FIG. 4 to the position shown by the chain line by extending the ram 19 of the cylinder, and the tip shaft portion of the roller post P is inserted and held in the insertion hole 9a. When the ram 24 of the cylinder 23 is extended, the holder 11 descends, and the supply shaft 9 also descends while holding the roller post P. When the supply shaft reaches a position facing the center of the chuck portion 2a, the cylinder 23 The drive of the supply shaft is stopped, and the lowering of the supply shaft is stopped. Thereafter, the ram 19 of the cylinder is extended, the supply shaft 9 is advanced, and the shaft portion on the rear end side of the roller post P is inserted and supported at the center of the chuck portion 2. After that, movable platform 2
5 moves forward and moves to the right in FIG. 3 to rotate the thread cutting tool 33.
Apply it to Pb and close and separate it 4 times to cut the thread. Thereafter, the movable base 25 is moved to the left side, and the finishing tool 34 is applied to the threaded combined body Pb to align the threads. Then, return the movable platform to its original position. The same process is repeated thereafter.

When the supply shaft 9 descends with the roller post P inserted and held, the lowest roller post held by the holding hook 6 and held by the supply shaft resists the spring force of the spring 7 and moves toward the supply shaft. At the same time as the chute 4 descends, it is taken out downward and outward from the chute 4.

As explained above, according to the present invention, threading of the shaft to be machined can be performed automatically, and mass production of products can be carried out without product variations.
Maintenance is also easier compared to rolling.

[Brief explanation of the drawing]

Figure 1 is a front view, Figure 2 is a side view of the main parts, and Figure 3 is a front view.
The figure is a plan view showing the positional relationship between the chuck part, the supply shaft and the cutting tool, Figure 4 is a partially cutaway enlarged front view showing the positional relationship between the holding hook and the supply shaft, and Figure 5 is the holding hook holding the roller post. A side view showing the condition,
FIG. 6 is a front view of the roller post. DESCRIPTION OF SYMBOLS 1...Base, 2...Chuck device, 2a...Chuck part, 4...Chute, 4b...Guide groove,
6... Holding hook, 5... Pin, 7... Spring, 8
...Feeding device, 9... Supply shaft, 9a... Insertion hole,
10...Support plate, 11...Holder, 12...Extrusion plate, 18...Cylinder, 19...Ram, 20...
...Sliding body, 22 ... Guide plate, 23 ... Cylinder, 25 ... Movable table, 26, 30 ... Adjustment table, 3
1, 31a... Holding stand, 33... Thread cutting tool, 34... Finishing tool, L... Shaft center line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A chuck device that supports a shaft to be processed with a chuck portion; a chute that guides the shaft to be processed and holds it removably at the extreme end on the discharge side by a holding means; a supply device which takes out the shaft to be processed located at the extreme end on the discharge side of the chute and supplies it to the chuck; A movable table; and a thread cutting tool and a finishing tool for aligning the threads, which are installed on the movable table and positioned to sandwich the axial line of the chuck part; The holder is supported so as to be movable in the front-rear direction, and is provided with a pushing means for pushing the supply shaft forward, and is provided with an operating means for moving the supply shaft from at least the take-out position of the processed shaft to the chuck portion. Thread processing device for processing shafts such as roller posts. (2) Claims for Utility Model Registration In paragraph 1, the holding means in the chute includes a holding hook for the shaft to be machined which is attached to the chute with a pin as the rotation center, and a spring force applied to this hook in the direction of holding the shaft to be machined. A screw processing device for a shaft to be processed, such as a roller post, characterized by comprising a spring for applying force.