JPH0369655B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for supplying and unloading articles in a vertical lathe, particularly a two-axis vertical lathe, and more specifically, a method for efficiently machining both sides of an article using a two-axis vertical lathe. This article relates to a method for supplying and discharging articles that have been prepared.

Conventional technology Generally, when processing both sides of an article, one side is first processed and then turned over to process the other side. Robots are used.

Problems to be Solved by the Invention The above-mentioned manual work is inefficient, whereas robots are efficient and have a large degree of freedom of movement for moving goods in and out.
Hydraulic or electric servo motors are used to control the drive of each moving part, and expensive control methods such as numerical commands or movement teaching in a numerical control device using a computer are used for positioning and the like. Furthermore, when transporting articles, the swinging radius of the arm portion is large, and therefore a large area is required for the movement area.

Furthermore, when machining both the upper and lower sides of an article, as the article is reversed, the dimensions to be removed, the rotational speeds, and the blades to be removed are usually different, and therefore machining with a single lathe poses problems.

Means for Solving the Problems In view of the above, the present invention uses a two-axis vertical lathe to efficiently process both the upper and lower surfaces of an article, and to quickly supply and convey the article within a narrow operating range. This is a two-spindle vertical lathe with a pair of rotary tables arranged side by side in the left and right direction. The autoloader is equipped with a movable autoloader, and has a body that horizontally rotates around a vertical axis, and an article gripping arm that is provided on the upper surface of the body so as to be able to swing vertically. The supply conveyor and the discharge conveyor face each other, and the goods on the A supply conveyor are gripped by (a) vertical swinging of the arm, (ro) horizontal rotation of the body around the vertical axis, and (c) movement of the body along the rail. B. Grasping the processed article on one of the rotary tables, inverting it, and feeding it onto the other rotary table; C. The object of the present invention is to grasp a processed article on a rotary table and carry it out onto a carry-out conveyor in conjunction with the processing of the article by a vertical lathe, based on a predetermined program.

Function: Since the upper and lower surfaces of the article are processed on separate rotary tables, the deletion work can be carried out efficiently. Further, a series of operations of supplying, reversing, and carrying out articles are performed by an autoloader, and the amount of movement is up to a limited position, which can be performed by sequence control.

Embodiment In the figure, a two-spindle vertical lathe 1 has first and second rotary tables 3 spaced apart from each other in front of a frame 2.
3b, rams 5a and 5b are provided on the cross rail 4 above the frame 2 so as to be movable along the cross rail 4, and each ram 5a and 5b supports a tool rest 6a and 6b so as to be movable up and down. This vertical lathe itself has a well-known structure and its explanation will be omitted. Note that 7a and 7b are rotary tables 3a,
This is a chuck attached to 3b.

In front of this frame 2, two rails 8, 8 are provided in parallel with the frame 2, and an autoloader 10 is mounted on the rails 8, 8 so as to be able to run, and on both sides, a supply conveyor 11 for articles W and a conveyor for carrying out the articles W are placed. conveyor 1
Set 2 in opposition.

For example, the autoloader 10 has a structure previously filed by the present inventor (Japanese Patent Application No. 61-240573). The autoloader 10 includes an arm 13 having a hand portion 14 for gripping an article W attached to its tip. The hand section 14 is equipped with an opening/closing means 15 consisting of a rack 16, a pinion 17, and a cylinder 18 for advancing and retracting the rack, and as the rack 16 moves back and forth, the levers 19, 19 that constitute the hand section 14 are moved around pivots 20, 20, respectively. It rotates to grip or release the article W.

The arm 13 is pivotally supported by a rotating shaft 25 and the pinion 2
7 and a rack 28 that meshes with the arm drive device 26 to move up and down. This rotating shaft 25 is mounted on a body 30, and the body 30 is rotatably mounted on a base 31 by an appropriate rotating means (not shown). The elevating rack 28, the rotating means for the body 30, etc. are described in detail in the above-mentioned autoloader previously filed by the inventor of the present application, and their explanation will be omitted.

The base 31 has a slider 3 that fits into the rail 8.
2, and is reciprocated along the front surface of the frame 2 by a traveling drive cylinder 33. 34 and 35 are stoppers.

The length of the arm 13 is set to a length that allows the article W to be gripped to be delivered to the chucks 7a, 7b of the rotary tables 3a, 3b, and the autoloader 10 is moved to the first rotary table at the position of contact with one of the stoppers 34. 3a, and the second rotary table 3b at the contact position with the other stopper 35, and the autoloader 10 of the supply conveyor 11 and the unloading conveyor 12 is regulated to the position opposite to the second rotary table 3b at the contact position with the other stopper 35. It is provided at a position where articles can be delivered at the stop positions 34 and 35.

Next, the procedure for supplying and transporting articles by the autoloader 10 will be explained based on FIG. 5. First, when receiving an article on the supply conveyor 11, the autoloader 10 stops at a contact position with the stopper 34, rotates the body 30 as shown in FIG.
After directing the arm 13 toward the supply conveyor 11, the arm is swung down to clamp the article W.

Next, raise arm 13 and move body 30 to 90
The arm 13 is rotated once to direct the arm 13 toward the first rotary table 3a (FIG. 2B), and the arm 13 is swung down to supply the article W to the check 7a (FIG. 2C). However, when supplying the article W, the ram 5a moves to a position where there is no problem.

After supplying the article, the arm 13 returns to the raised position, starts processing the upper surface of the article W on the rotary table 3a, and the autoloader 10 moves to the second rotary table 3b side and waits (d in the figure). . This rotary table 3b is used to process the other side of the article W, as will be described later, and after finishing machining, it swings down the arm 13 to teach the article W, and after swinging up the arm, rotates 90 degrees to the side of the conveyor 12 for carrying out. (e in the same figure), and swings down the arm 13 to transfer the article W onto the carrying-out conveyor 12 (f in the same figure).

Next, swing up the arm 13 and load the autoloader 1.
0, moves to the front of the first rotary table 3a, and waits with the arm 13 directed toward the rotary table 3a (see figure b above). After processing is completed, the arm 13 is swung down, the object is clamped, and then the arm 13 is swung up and the body 30 is rotated by the rotating arm 13.
It rotates 180 degrees (g in the same figure), moves to the front of the second rotary table 3b, swings down the arm 13, and loads the article W.
is supplied to the second chuck 7b (h in the figure).

As a result, one surface of the article W can be deleted on the first rotary table 3a, and the second rotary table 3b can be deleted.
In this process, deletion processing is performed on the opposite side. Thereafter, the autoloader 10 swings up the arm 13 and moves to the supply conveyor 11 side, and supplies the articles on the supply conveyor 11 to the first rotating table 3a in the manner described above.

Repeat the above operations.

Effects of the Invention As described above, according to the present invention, it is possible to efficiently carry out the work of supplying and unloading articles on a two-axis vertical lathe, and to process both the upper and lower surfaces of articles using the two-axis vertical lathe. It has a body that horizontally pivots around the body, and an article gripping arm that is provided on the top surface of the body so as to be able to swing vertically. Since the direction change and reversal of the article are performed by a combination of horizontal turning, the object can be turned and reversed within a narrow movement range, and therefore the operator can approach the rotary table of the vertical lathe easily. Adjustment work, etc. can be performed safely.

In addition, as mentioned above, since the direction of the article can be changed and reversed with just two simple movements: vertical swing of the arm and horizontal rotation of the body around the vertical axis, the autoloader itself The structure can also be made simple and inexpensive.

Furthermore, each of the above-mentioned movements of the autoloader's arm and body can be performed by sequence control that issues the next movement command after reaching a predetermined position (limited position), which eliminates the need for conventional complicated and expensive numerical control equipment. It is easy to organize and automate programs, and the autoloader can be made inexpensive as described above, so the entire device can be made cheap.

[Brief explanation of drawings]

The figures show an embodiment of the method of the present invention, in which Figure 1 is an overall plan view, Figure 2 is a front view, Figure 3 is a right side view,
FIG. 4 is a plan view of the autoloader, and FIG. 5 is an explanatory diagram of the procedure for supplying and conveying articles. 1 is a two-axis vertical lathe, 3a and 3b are rotary tables, 8 is a rail, 10 is an autoloader, 11 is a conveyor for supplying articles, 12 is a conveyor for transport, 13
is the arm.

Claims (1)

[Claims] 1. A pair of rotary tables arranged side by side in the left-right direction.2
In a shaft-type vertical lathe, a rail is laid in the left and right directions in front of the vertical lathe, and an autoloader is provided on the rail so that it can run. It has a swingable arm for grasping articles, and a supply conveyor and a carryout conveyor for articles are installed at both ends of the rail. By horizontal rotation and (c) traveling along the rail of the body, (A) grasping the article on the supply conveyor and feeding it onto one of the rotary tables, and (B) transferring the processed article on the one rotary table. C. Grasping the processed article on the other rotary table and carrying it out onto the carry-out conveyor. A method for supplying and carrying out articles in a two-axis vertical lathe, characterized in that the method is carried out based on a predetermined program in connection with machining.