JPH04210301A - Device for simultaneous machining of both ends of metal work - Google Patents

Abstract

PURPOSE:To obtain a device for simultaneous processing of both ends of a metal work which is quiet in operation and beneficial in cost, by providing a fixed spindle post, a movable tool post equipped with a first tool, a fixed tool post equipped with a second tool, and a movable spindle post equipped with a second spindle. CONSTITUTION:A chuck 14 is closed, a spindle 12 is driven by a motor 15, a first tool 31 of a movable tool post 30 is applied to an end of a material, and machining is started. After a projection at an end of the material bar A is subjected to machining of its front part as scheduled, the rotation of the first spindle 12 is stopped, then a movable spindle post 20 approaches a fixed spindle post 10. A chuck 24 at the end of a second spindle 22 grips and rotates the projection at the end of the material bar A, then the movable tool post 30 approaches again and cut off a work W from the material bar. Gripped by the chuck 24, the work W is moved to the front of a fixed tool post 40 and subjected to machining of its rear part by a second tool 41. One cycle process is thus completed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention involves feeding out a metal bar in constant size increments and processing the protruding part of the bar with a tool such as a cutting tool while rotating it, and cutting it off (to perform reverse end face processing). This invention relates to a metal processing device that can perform metal processing at both ends simultaneously in a continuous and fully automatic manner.

Conventional Technology When manufacturing bushing fittings (bearings) as shown in Figures 8 to 9, conventionally, a metal bar is cut to a certain size and the workpieces are machined one by one to machine one end of the workpiece (
The common method was to use a cutting tool, drill, etc. to cut grooves on the circumferential surface, drill holes, finish the end surface, etc.), and then use another machine to process the other end. There is a known method of forging with punches and dies using a forging machine such as a multi-stage forging forging machine.

Problems to be Solved by the Invention However, such conventional methods require at least two specialized machines of different types, and are time-consuming and labor-intensive, resulting in low productivity and cost. But there was a problem.

Even a single forging machine is relatively large and expensive, and since the main process is forging by striking with punches and dies, it is difficult to perform small processing such as knurling, thread cutting, and small hole processing. However, because the processing is carried out step by step, it is not possible to take out two or three pieces at the same time, so there is a problem in terms of productivity. It had the problem of being extremely noisy due to the balanced firing.

The present invention has been made in view of the problems of the prior art, and its purpose is to use a metal rod of a predetermined length to feed and rotate a predetermined length at a time. It is possible to sequentially apply predetermined tools to perform the first-stage machining, and then cut the workpiece to quickly and reliably perform the second-stage machining of the workpiece continuously and fully automatically. It is possible to take out multiple pieces of material, such as two or three pieces at the same time, by sending out multiple material bars at the same time using a single machine, and the resulting products are of high precision and excellent quality.
The object of the present invention is to provide a simultaneous metal processing device for both ends that does not have the violent hammering action of a punch and die unlike a single forging machine, has quiet operation, and is advantageous in terms of cost.

Means for Solving the Problems In order to achieve the above object, the device for simultaneous metal processing at both ends of the present invention feeds out a metal bar by a certain size and rotates it, and after processing the front part, cuts it. This is a metal processing device that continuously and fully automatically processes the rear part of the workpiece, and has a guide hole for the material rod that penetrates back and forth around the axis, and a chuck that grips and rotates the material rod at the tip opening. a fixed spindle stand (first spindle stand) which horizontally supports a first spindle; Alternatively, a movable tool stand (first tool stand) in which a plurality of first tools are arranged side by side (first tool stand), and a movable tool stand installed immovably at a position adjacent to the fixed spindle stand and one on the front end surface.
Or a fixed tool stand (second
tool stand) and a chuck that is aligned with the axis of the first spindle so that the fixed spindle stand and the fixed tool stand are both at opposite positions in the r'rlI direction and can be moved laterally in the left-right direction and in the front-rear direction between the two stands. It consists of a movable spindle stand (second spindle stand) equipped with a second spindle of the first and second spindles. Each chuck of the m2 spindle has four strokes 1. The second spindle rotates with the second spindle and is configured to open and close in conjunction with the second spindle.

According to the above-described structure, the present invention feeds out a metal material rod of a predetermined length in constant size increments, grips it with a chuck, rotates it with a spindle, and applies a predetermined first tool to the protrusion at its tip. Therefore, after machining part 011, the machined protrusion is separated from the bar, received by the chuck of the second spindle, and applied to the second tool to machine the reverse end face of the rear part of the workpiece. It is something that can be done.

EXAMPLE Hereinafter, an example of the present invention will be described without reference to the drawings.

As shown in FIGS. 1 to 3, the fixed spindle stand (first spindle stand) 10 has a guide hole 13 for the base rod A passing through the axis in the front-rear direction, and is equipped with a chuck 14 at the tip end. The spindle 12 includes a first spindle 12 and a motor 15 for driving the spindle.

The first spindle 12 is supported and provided with a predetermined distance between its axes so that it can freely rotate two times in the left and right directions, and is simultaneously operated by one motor 15 installed in the middle.

Metal material rods A, aluminum, copper, etc. of a certain length are used, and are fed out one by one from a combination 50 provided at the rear of the fixed spindle stand 1o by a bar feeder (not shown).

Movable spindle stand 20171. A traversing table 25 that moves laterally left and right (X direction) along the traversing guide rail 21, and a traversing table that is installed on its upper surface to move while being guided in the front-rear direction (Y direction) orthogonal to the traversing guide rail 21. 26, and the fixed spindle stand 10 on the traveling stand 26.
It consists of a first spindle 12 and a second spindle 22 whose axes coincide with each other and are rotatably supported. The second spindle 22 is paired with the two fixed spindles 12 and 12, separated by the same axial distance, and is interlocked with pressure so that the two left and right spindles are driven to rotate simultaneously by one motor 27. Do it like this.

The spindle stand 1 is also fixed at the tip of the second spindle 22.
Chuck similar to spindle 12 of 0 (second yank)
It is equipped with 24. This second chuck 24 is opposed to the chuck 14 of the first spindle 12, and moves to receive the workpiece after processing the front part of the material bar, grips the tip and rotates it, thereby converting the first tool 31 to the chuck 14 of the first spindle 12. The lowermost tool (cut-off by) 31r is used when cutting through the material bar to separate the workpiece W, and when processing the reverse end face of the rear part of the workpiece using the second tool 41, which will be described later.

The horizontal movement (X direction) of the movable spindle stand 20 is as follows:
A motor 23 for traversing is used for movement, and a motor 28 for traveling is used for movement in the backward direction (Y direction) of the iYT.

The motor 23 for traversing, the motor 28 for traveling, and the two motors 32 and 33 of the movable tool stand 300, which will be described later, are as follows:
For example, a DC servo motor for direct current is used so that the feed speed and amount can be numerically controlled according to the program.

The movable tool stand 30 is located opposite to the tip of the first spindle/l/12 of the fixed spindle stand 10 in a direction perpendicular to the axis of the first spindle 12 (vertical direction 49 in FIG. 1).
mouth) and in the anteroposterior direction (c in Figure 3).

2) and has a first tool 31 facing backwards. The first tool 31 is a plurality of tool groups 31a as shown in FIG.

It is composed of 31b, 31C, 31d, 31e, etc., but it may be a single one depending on the object to be processed.

In the case of Fig. 4, when the material rod A is fed out using one of them 31b as a positioning stopper,
The end surfaces are placed opposite each other, and the tip is brought into contact with the end surfaces to define a certain dimension. The knurling 1a is formed by using the tool 312L at the top as a roll rest trochanter and pressing it against the outer peripheral surface of the tip of the rotating material rod A.

Similarly, if the third tool 31c is used as a drilling drill and the fourth tool 31d is used as a cutting tool for grooving, each of them is sequentially applied to the protruding end of the material rod A for cutting. As shown in the figure, it becomes possible to process the hole 1b on the end face, the peripheral surface processing 1C, and the surface processing 1d.

The movable tool stand 30 is moved in the vertical direction (42 openings) by a vertical movement motor 32, and is moved in the front-back direction (c).

Movement 2) is performed by a motor 33 for forward and backward movement.

The fixed tool stand 40 includes a fixed stand 42 that is immovably installed on the side of the fixed spindle stand 1Q, and a fixed stand 42 that is arranged in front of it to face the second spindle /L/22 of the movable spindle stand 2Q. It consists of a second tool 41 that is

The second tool 41 includes a plurality of tools 41a and 41b, as shown in FIGS. 2, 3, and 5.

41C... are arranged at predetermined intervals.

Among these tools, the first tool 411L is the work W
The second tool 41b is used as a cutting tool to process the rear end 1e, and the second tool 41b is used as a drill to form a hole 1f with a larger diameter than the rear end. Used as a finishing cutting tool for finishing machining.

This second tool/v41 is used by arbitrarily replacing various tools depending on the purpose and use of machining. Of course, this second
There may be a plurality of tools as described above, or a single tool may be used.

1st. The second spindle 12.22 rotates and stops by turning on and off, and the first spindle 12.22 rotates and stops. The opening and closing operations of the second chuck 14.24 are automatically controlled by a micro switch or the like.

The operation of the double-end simultaneous metal processing apparatus configured as described above will be explained.

As shown in FIG. 3, the metal rod A is inserted into the guide hole 13 and the chuck 14 of the axis of the first spindle 12 from the rear of the fixed spindle stand 10 to be upset.

The first spindle 12 is stopped, the chuck 14 is opened, and the material iA is pushed forward by a bar feeder (not shown). At this time, the movable tool stand 30 waits in advance at a predetermined position in front of the fixed spindle stand 10, and the protruding length of the material rod A is determined to be constant.

Next, the chuck 14 is closed, and the motor 15 rotates the spindle 12 to move the first tool/l of the movable tool stand 30.
The desired processing is performed by applying /31 to the tip of the material rod. When the front end of the protruding end of the material rod A is machined as specified, the rotation of the first spindle 12 is stopped, and at the same time, the movable tool stand 30 once moves away from the front part of the fixed spindle stand 10, and then moves away from the movable spindle stand 20. approaches the fixed spindle stand 10, grips the tip protrusion of the material rod A with the chuck 24 at the tip of the second spindle 22, and rotates it.
Then, the movable tool stand 30 approaches again and separates the workpiece W from the material rod.

The workpiece W is connected to the chuck 24 of the second spindle 22.
is carried as it is to the front of the fixed tool stand 40 together with the movable spindle stand 20, and the rear part of the workpiece W is processed by the second tool 41 by slight movement of the movable spindle stand 20 back and forth and left and right, and one cycle of processes is completed. . After this,
When the chuck 24 is opened and the workpiece W is discharged, it is taken out as a product. The work W is discharged from the hollow hole 2 of the second spindle/I/22 when the second chuck 24 opens and becomes free.
It is pushed out by the pressure of the cutting fluid constantly flowing out from 21L.

Effects of the Invention Since the present invention is configured as described above, it produces the effects described below.

A metal material rod of a predetermined length is fed out in constant size increments, held in a chuck, rotated by a spindle, and a predetermined first tool is applied to the protrusion at the tip.
After processing the part, the machined protrusion is separated from the material rod, received by the chuck of the second spindle, and then transferred to the second spindle.
This machine is capable of machining the reverse end face of the rear part of the workpiece by applying it to the tool of Therefore, the surface can be processed easily and reliably without using a forging machine like Hope, and
Two or more metal material rods are fed in at the same time.
Since it is easy to take individual pieces, three pieces, and multiple pieces at any time, layer productivity is increased.

[Brief explanation of the drawing]

Fig. 1 is a side view of a double-end simultaneous metal processing device according to an embodiment of the present invention, Fig. 2 is a plan view of the same device, Fig. 3 is a plan view showing the operating state of the device, and Fig. 4 is a A side view showing the processing state of the front part of a metal material bar by a tool, Fig. 5 is a plan view of the left half of the fixed tool stand, Fig. 6 is an enlarged front view of the movable tool stand, and Fig. 7 is the same. 8 is a front view showing an example of a product processed by the device; FIG. 9 is a plan view of the device; FIG. 10 is an enlarged side view showing the processing state of the front end of the raw material rod; FIG. 11 is an enlarged side view showing the state of reception by the second chuck. 10...Fixed spindle stand, 12...
1st spindle, 13...Guide hole, 14...
...First chuck, 20...Movable spindle stand, 22...Second spindle, 24...
... Second chuck, 3o... Movable tool stand, 31... First tool, 40... Medium fixed tool stand, 41... Second Tool, A...
・Metal material rod, W...work. Name of agent: Patent attorney Akira Okaji and two others 81;
21 t ε1gu (Kubetsu Mi 1 = Journal 1 Bush - ÷ 1 Figure 4 Figure 5 @ 6 Figure 7

Claims (4)

[Claims] (1) A metal processing device that feeds out a metal bar A by a certain size and processes the front part while rotating it, and then cuts it and processes the rear part of the workpiece continuously and fully automatically, A fixed spindle stand (first spindle stand) comprising a first spindle that horizontally supports a first spindle, which has a guide hole for the material rod that penetrates back and forth around the axis, and a chuck that grips and rotates the material rod at the tip opening; , a movable tool stand (first tool stand) equipped with one or more first tools arranged opposite to the first spindle tip opening and moving forward and backward in a direction perpendicular to the axis and in a front-rear direction; , a fixed tool stand (second tool stand) that is immovably installed at a position adjacent to the fixed spindle stand and has one or more second tools on its front end surface, and both of the fixed spindle stand and the fixed tool stand. A movable spindle stand (second spindle stand) having a second spindle with a chuck aligned with the axis of the first spindle so as to move laterally in the left-right direction and to move near and far in the front-rear direction between the two stands at a front facing position; The chucks of the first and second spindles are configured such that the movable spindle stand is close to the fixed spindle stand to receive and rotate the work cut from the spindle. 1. A double-end simultaneous metal processing device, characterized in that it is configured to rotate together with a spindle and open and close in relation to each other. (2) The double-end simultaneous metal processing apparatus according to claim 1, wherein at least two or more of the first spindle and the second spindle are provided on each spindle stand at a predetermined interval and are interlocked with each other. (3) The double-end simultaneous metal processing apparatus according to claim 1 or 2, wherein the number of sets of first and second tools of the movable tool stand and the fixed tool stand correspond to the first and second spindles, respectively. (4) A claim in which the second spindle is provided with a cutting fluid supply hole that passes through the axis and opens at the tip opening, and when machining is completed, the chuck is opened and the workpiece is pushed out of the chuck by the discharge force of the cutting fluid. Item 1. Simultaneous metal processing device for both ends.