JPS62199301A - Vertical numerically controlled lathe provided with work index table - Google Patents

Abstract

PURPOSE:To perform machining of a wide range with automatic supply of material at a low cost by properly combining a tool swivel rest with a rotary tool, in addition to a vertical headstock without a vertical motion, a horizontally rotating material supply mechanism and a vertically and horizontally movable tool rest mechanism. CONSTITUTION:A table 22 is rotated with a motor 23, a material on a pan is moved in the center of a headstock by means of a cylinder 25, pushed out through a pin 33 by means of a cylinder 32, held in a chuck by means of a cylinder 6, and the table 22 is retreated. A turret rest 38 holds a rotary tool 46 rotated through a fixed tool and an intermediate rotary shaft 66, indexed with a motor 40, rotated with a motor 39 horizontally and with a motor 13 vertically, controlled with a control panel 59, and capable of making secondary manufacture. Inside and outside diameter cutting, screw cutting, drilling machining, etc. can be carried out by a structure formed at a low cost by changing a combination of the tool rest 38 to become a fixed tool rest if circumstances require.

Description

Detailed Description of the Invention: a. Field of Industrial Application The present invention relates to a numerically controlled lathe that is comprised of three mechanisms: a headstock mechanism, a work index table mechanism, and a turret mechanism, and is characterized by high efficiency, high precision, and labor saving. .

b. Prior Art Conventional numerically controlled lathes employ a computer-based numerical control system, but loading and unloading materials on the lathe is done manually, which is inefficient. In addition, there are cases in which robots are used for attaching and removing materials, but this requires a large amount of investment, resulting in high costs and is rather disadvantageous.

Furthermore, if we look specifically at conventional numerically controlled lathes, the main spindle that grips the material during cutting is mostly horizontal, and the material is typically fed manually or by robots. As mentioned above, each has many problems.

In the current state of the prior art, the invention previously filed by the present inventor is to combine the headstock mechanism, work index table mechanism, and tool post mechanism, to achieve high accuracy and high efficiency in the functions of each mechanism, and to improve the performance between each mechanism. This system streamlines the cooperative operation of the two systems. The headstock mechanism consists of a vertical headstock and a spindle, and the function of the spindle is to grip the material at its tip.
As a function for this purpose, movement in the direction of the spindle is performed by vertical movement of the headstock, and the spindle can also be rotated. The advantage of this headstock mechanism is that it is vertical, so it takes up less floor space, and the work index table mechanism allows material to be fed from the periphery of a horizontal rotary circular table, instead of the traditional manual or robotic material feeding method. Materials can be placed at regular intervals and rotated appropriately, and can also be reciprocated toward the center line of the spindle of the headstock. With this configuration, when the material placed on the table and the headstock spindle are aligned, the spindle can grip the material with high precision, and together with the highly accurate operation of the turret mechanism, it achieves high efficiency, high precision, and labor-saving. It became possible to perform cutting work.

C1 Problems to be Solved by the Invention In the prior art, the headstock was exclusively horizontal, but the inventor's previous invention made it vertical to save floor space, and the headstock and work index table. By operating the system and numerical control mechanism, high-speed, high-precision, and low-cost automation was realized. It is also conceivable to move the tool rest up and down by a method instead of moving the headstock up and down, that is, to achieve the same effect as the up and down movement of the spindle while the headstock is fixed.

Furthermore, the tool rest based on the numerically controlled lathe according to the previous invention filed by the present inventor is limited to cutting inside and outside diameters, drilling, cutting, cutting off, etc., and is particularly suitable for complicated machining that requires rotary tool machining. Parts have no choice but to rely on secondary processing, which is extremely unreasonable in such a case. Therefore, it is necessary to solve the problem when installing a turret that can perform complex machining.On the other hand, when processing only simple parts, it is necessary to further simplify the turret mechanism and reduce the manufacturing cost of the machine.

Means to Solve the d8 Problem The present inventor has confirmed that the same effect can be achieved by fixing the headstock and moving the turret up and down, thereby moving the headstock up and down. That is, the present invention has a configuration in which three mechanisms consisting of a headstock mechanism, a work index table mechanism, and a turret mechanism are operated by a numerical control device.
The vertical headstock with one main spindle is fixed, and the turret mechanism moves up and down. This is the specific invention of this application.

Next, this specific invention will be explained using figures. In Figures 1-3, a main bearing 2 that pivotally supports the main shaft 1, a power chuck 8 attached to the lower end of the main shaft, a chuck opening/closing device consisting of a round rod T inserted into the main shaft head, and a main shaft motor that rotates the main shaft. 4. Position detector 16 that detects the rotational position of the main shaft
This constitutes the headstock mechanism. The main bearing 2 and the main shaft motor 4 are fixed to a headstock frame 3, and the main shaft 1 is rotated by the main shaft motor 4 connected via a pulley 5 and a belt. A round rod 7 within the main shaft 1 is connected to a piston of a hydraulic cylinder 6 fixed to the head of the main shaft, and moves up and down as the piston reciprocates. When the round rod goes up, claw 1 of power chuck 8
0 can be closed and material 9 can be grabbed. Position detector 16
For example, it is connected and rotated via a belt 18 from a boot 717 attached to the main shaft, and is used for position detection during thread cutting.

The rotational speed of the main shaft motor 4 is determined by a speed converter (not shown).
It will be adjusted as appropriate up to 1/30.

In FIGS. 1-3, the work index table mechanism horizontally reciprocates a work index table (hereinafter referred to as the table) 22, an indexing motor 23, and a frame 24 that supports the table and the indexing motor toward the center line of the main shaft. It consists of a hydraulic cylinder 25 for movement and a material extrusion device for pushing upward the material 9 placed on the table. Table 22 and index motor 23 are attached to frame 24. The frame 24 is the main body frame 1
2 and is fixed to a plate 27 attached perpendicularly to the tip of a piston rod 26 of a hydraulic cylinder 25 in a horizontal position. The table is configured to move horizontally so that the horizontal reciprocating movement of the piston rod 26 causes the material receiving tray facing the main shaft to horizontally reciprocate toward the center line of the main shaft. Also,
Receiving trays 28 for material 9 are provided at equal intervals around the circumference of the table 22, and vertical frames 30 of the trays 28 are provided with through holes 2 from the lower surface of the table 22.
Insert into 9. A material extrusion hydraulic cylinder 32 is provided on an arm 31 extending from the front end of the frame 24, and an extrusion cylinder 33 directly connected to the piston faces the vertical frame 30 of the material receiving tray. The vertical frame 30 is pushed upward by the upward protrusion of the extrusion 733. A worm wheel 34 at the lower end of the table 22 meshes with a worm 35 directly connected to the shaft of the indexing motor 23. The table 22 can be rotated at equal angles by rotating the indexing motor 23. The turret mechanism will be explained with reference to FIG. 1.2.4. A horizontal axis motor 39 that causes the turret tool rest 38 to horizontally move forward and backward reciprocally toward the center line of the main shaft 1, a vertical axis motor 13 that moves the turret tool rest vertically up and down, and the tool rest 3
Motor 40 for indexing 8, turret frame 41 and turret 3
8, a hydraulic cylinder 43, and a cutting tool, that is, a cutting tool 44. The rotation shaft 52 of the tool post 38 is connected to the piston 53 of the hydraulic cylinder 43.
The lower end of the piston rod of the piston 53 is connected to a spur gear 54 having an inverted bowl shape. When the piston 53 is pushed upward, the turret tool rest 38 and the curvic coupling 42 float up, and at the same time, the indexing motor 40 drives the spur gear 54 by one drive via the bevel gear 55 and the pinion 56. This indexes the tool rest 38. Next, the piston 53 moves down, and the turret tool rest 38 and the curvature cutter 42 engage with each other, completing indexing. The turret frame 41 can be moved forward and backward by screwing the nut 65 of the frame 41 with the goal screw rod 5T, which is directly connected to the rotating shaft of the horizontal shaft motor 39, which rotates in forward and reverse directions. Furthermore, the tool rest frame 41 is raised or lowered in accordance with the forward and reverse rotation of the vertical shaft motor to perform cutting by screwing together the ball screw rod 14 directly connected to the vertical shaft motor 13 and the nut 15 of the sliding table 45. conduct.

Each of the three hydraulic cylinders is operated by a hydraulic system 58 consisting of an oil tank, a pump, and a motor.

The numerical control device consists of a numerical control panel 59 and an operation panel 60 for operating the same. When a work program is incorporated into the numerical control panel 59 from the operation panel 60 and then an operation command is transmitted, each motor and each hydraulic cylinder are operated according to the program. It operates based on

Means for Solving the e0 Problem 2 Furthermore, the present inventor assumes that the headstock mechanism, work index table mechanism, and vertically movable tool post mechanism are the same as the specified invention, and that the tool post is further provided with a rotary tool and horizontally moved. A second invention has been obtained which has a tool rest device that is capable of performing hole drilling, end milling, slitting, eccentric hole drilling, flattening, etc., that is, a tool rest device that is capable of composite processing.

Next, this second invention will be explained with reference to FIG. 5.6.7.

A turret tool post 38, a horizontal axis motor 39 that moves the turret horizontally forward and backward toward the center line of the main spindle 1, a vertical axis motor 13 that moves it up and down vertically along the center line of the main axis 1, and a tool post. A motor 40 for indexing the turret 38, a curvic coupling 42 for connecting the turret frame 41 and the turret 38, a hydraulic cylinder 43, a cutting tool, that is, a bite 44, a drill tag, etc. are attached.

As shown in FIG. 6, a fixed vertical holder 47. It consists of a horizontal rotation holder 48 for attaching a drill tag etc., a vertical rotation holder 49, a rotation tool motor 50 and a transmission device,
Motor 50 drives 4B and 49.

The structure of the tool rest shown in a partially sectional view in FIG. 5 is completely the same as that of the specific invention, except for the intermediate rotation shaft 66, and therefore a description thereof will be omitted.

Next, a rotary tool which is a feature of this second invention will be explained. In FIG. 6, the rotary tool has four horizontal rotary holders 48.
and four vertical rotating holders 49, and rotates the googly of an intermediate rotating shaft 66 via a belt 51 from a directly connected pulley 64 of a rotating tool motor 50. The rotation of the bevel gear at the upper end of the intermediate rotation shaft rotates the rotation tool of the horizontal rotation holder 48. Each horizontal rotation holder is provided with a horizontal rotation shaft, and the bevel gear at the tip is an intermediate rotation shaft 66 provided with only one
When the bevel gear at the upper end reaches the position and engages, the rotary tool 46 at the tip of the holder rotates. FIG. 6 shows four horizontal rotating holders, of which only one horizontal rotating shaft and bevel gear are shown. Both bevel gears shown are in a mutually disengaged position.

Further, as shown in FIG. 5A, the rotary tool of the vertical rotary boulder 49 is rotated by the rotation of the intermediate rotary shaft 66 via a horizontal shaft 67 having bevel gears at both ends. Therefore, the rotary tool of the vertical rotary holder that is meshed with the bevel gear at the upper end of one intermediate rotary shaft 66 provided in the tool rest and the horizontal bevel gear rotates.

Means for Solving the f0 Problem 3 Consists of a headstock mechanism, a work index table mechanism, and a tool post mechanism, and the headstock mechanism and work index table mechanism are exactly the same as those of the specified invention, but the tool post mechanism is modified in various ways. In addition to having cutting functions, we have devised a way to reduce the manufacturing cost of the lathe. This is the third
Invention.

Among the configurations of this third invention, the headstock mechanism and work index table model are completely the same as those of the specific invention, so their explanation will be omitted. The turret mechanism, which is its feature, is the 8th.
This will be explained with reference to Figure 9. The turret 63, a horizontal axis motor 39 that horizontally moves it forward and backward in a reciprocating manner toward the center line of the main spindle 1, and a vertical axis motor 13 that causes it to move up and down vertically in a reciprocating manner along the center line of the main spindle 1. Consisting of

A cutting tool holder 61 with a cutting tool 62 attached to a tool rest 63
Install several. Horizontal axis motor 39 and vertical axis motor 13
By rotating the pole screw rod 14 or 57, respectively, the tool rest 63 and the cutting tool 62 are moved vertically and horizontally to perform cutting.

The tool post according to the third aspect of the present invention has a structure that can be easily and inexpensively installed, and has functions that allow sufficient machining of inner and outer diameter cutting, thread cutting, hole drilling, and cutting.

g0 Effect The main points of the function of the configuration of the third invention will be explained below. 1st
．． 2.3.4.5.6.7.8.9 In the embodiment shown in Fig. 9, the material on the work index table is ejected from the work index table by the claw 10 of the puller chuck attached to the tip of the spindle, and the catch plate is pushed out using the pin. Push up and grab. Next, the main shaft is rotated.

Subsequently, the work index table moves backward, and the tool post moves forward toward the spindle to perform cutting.

When the cutting process is finished, the tool rest moves back and the work index table moves forward. Stop the rotation of the spindle and fit the cut material into the saucer. The work index table is then rotated to position the raw material and return to initial operation.

Among the above-mentioned overall functions, all of the tool rests of the three inventions mentioned above can be moved up and down, and the processing range in the vertical direction of the material is widened.

Furthermore, by attaching a rotary tool to the tool rest of the second invention, it has become possible to perform horizontal hole drilling, end milling, slitting, eccentric hole drilling, flattening, etc.

Further, in the third invention, the tool post has a simple structure and is an inexpensive device, but the functions of the tool post of the specific invention, that is, cutting inside and outside diameters, threading, drilling, and cutting are possible.

h0 Effects of the Invention The headstock mechanism, work index table mechanism, and tool rest mechanism of the third invention, Hironari, have made it possible to achieve highly accurate and efficient lathe machining and save labor.

Also, by making the headstock vertical, the floor space could be saved.

Furthermore, with the rotary tool according to the second invention, it is possible to efficiently carry out machining that was conventionally done in secondary machining on a lathe, making a large economic contribution, and with the third invention, it is possible to perform processing that was conventionally performed in secondary machining efficiently, and the rotary tool according to the third invention has a normal tool post function. We are now able to provide inexpensive lathes.

[Brief explanation of drawings]

Figure 1 is a front view of the specified invention, Figure 2 is a plan view of Figure 1,
Fig. 3 is a left side view of Fig. 1, Fig. 4 is a right side view of Fig. 1, Fig. 5 is a front view showing the second invention, and Fig. 5A is a partial cross section of the turret shown in Fig. 5. Fig. 6 is a plan view of Fig. 5, Fig. 7 is a right side view of Fig. 5 showing the second invention, Fig. 8 is a front view showing the third invention, and Fig. 9 is a plan view of Fig. 8. FIG. DESCRIPTION OF SYMBOLS 1... Main shaft, 2... Main bearing, 3... Headstock frame, 4... Main shaft motor, 5... Pulley, 6... Hydraulic cylinder, T... Round ring, 8... ...War chuck, 9...Material, 10...Claw, 12...Body frame, 13...Vertical axis motor, 14...Zoru screw rod,
15... Nut, 16... Position detector, 1T...
Pulley, 1B... Belt, 19... Franz, 22
...Work index table, 23... Index motor, 24... Frame, 25... Hydraulic cylinder, 26... Piston rod, 27... Plate, 28...
...Saucer, 29...Through hole, 30...Vertical frame, 31
...Frame arm, 32...Hydraulic cylinder, 33.
...Eject pin, 34...Worm wheel, 35.
...Worm, 38...Turret turret, 39...
Horizontal axis motor, 40... Indexing motor, 41... Turret frame, 42... Curb rough cut ring, 43
...Hydraulic cylinder, 44...Bite, 45...Sliding table, 46...Rotary tool, 4T...Fixed vertical holder, 48...Horizontal rotating holder, 49...Vertical rotating holder , 50... rotary tool motor, 51... belt, 5
2... Rotating shaft, 53... Piston, 54... Spur gear, 55... Bevel gear, 56... Pinion, 57...
... Zoll screw rod, 58 ... Hydraulic device, 59 ... Numerical control panel, 60 ... Operation panel, 61 ... Bit holder, 62 ... Bit holder, 63 ... Tool rest, 65 ... - Nut, 66... Intermediate rotating shaft, 67... Horizontal axis.

Claims (3)

[Claims] (1) It consists of three mechanisms: a headstock mechanism, a work index table mechanism, and a tool post mechanism, and a numerical control mechanism that operates in conjunction with these mechanisms. The work index table mechanism is composed of a main shaft that can be gripped, and of the material receiving trays provided at equal intervals around the entire periphery of the rotatable circular table, the material receiving trays facing the main shaft are oriented toward the center line of the main shaft. The tool rest mechanism is capable of horizontal reciprocating movement and is capable of performing a material feeding operation at a point where the center of the main spindle and the center of the material receiving tray coincide. The turret can move up and down,
A vertical numerically controlled lathe with a work index table, characterized in that the numerically controlled mechanism is capable of storing a work program and causing each of the mechanisms to operate. (2) It consists of three mechanisms: a headstock mechanism, a work index table mechanism, and a tool post mechanism, and a numerical control mechanism that operates in conjunction with these mechanisms. The work index table mechanism is composed of a main shaft that can be gripped, and of the material receiving trays provided at equal intervals around the entire periphery of the rotatable circular table, the material receiving trays facing the main shaft are oriented toward the center line of the main shaft. The tool rest mechanism is capable of horizontal reciprocating movement and is capable of performing a material feeding operation at the point where the center of the main spindle and the center of the material receiving tray coincide, and the tool post mechanism is capable of horizontal reciprocating movement toward the center line of the main spindle and can perform vertical and vertical movement. A work index table, characterized in that a rotary tool is attached to a movable tool rest to enable compound machining, and the numerical control mechanism is capable of storing a work program and causing the operations of each of the mechanisms described above. Vertical numerically controlled lathe. (3) It consists of three mechanisms: a headstock mechanism, a work index table mechanism, and a tool post mechanism, and a numerical control mechanism that operates in conjunction with these mechanisms. In this work index table mechanism, among the material trays provided at equal intervals around the entire periphery of the rotatable circular table, the material tray facing the main shaft is aligned with the center line of the main shaft. The turret mechanism is capable of horizontal reciprocating movement toward the center line of the main spindle, and material feeding operation can be performed at the point where the center of the spindle coincides with the center of the material receiving tray. A movable tool rest is provided with a plurality of tool holders each having a cutting tool attached thereto, so that machining can be performed by horizontal movement and vertical movement of the tool rest, and the numerical control mechanism stores a work program. A vertical numerically controlled lathe with a work index table, characterized in that each of the mechanisms described above can be operated.