KR100590212B1 - lathe-typed working apparatus with whirling unit - Google Patents

Abstract

  The present invention relates to a lathe type processing apparatus equipped with a warping unit, and more particularly, a plurality of inserts are mounted along a circumference and a cutting ring is rotated at high speed to cut a material inserted into the circumference. It relates to an apparatus for processing. In particular, the present invention provides a configuration that can be used by mounting the mobile unit is attached to the waring unit on a general shelf.

In addition, in the present invention, the loading and discharging of the material is automatically performed to shorten the working time. In particular, in the case of the discharging device, the finished product is pushed toward the tailstock to fall to the opposite side of the supply of the material so that the flow of the work is continuously without interruption. Has a configuration that can be achieved.

Warring, Warring Machine, Warring, Discharge Conveyor, Helix, Lathe

Description

Lathe-typed working apparatus with whirling unit             

1 is a schematic front view of an overall processing apparatus according to the present invention;

Figure 2 is a cross-sectional view of the main shaft rotating at a low speed while fixing the raw material

Figures 3a and 3b is a front view and a perspective view of a warring unit in which cutting is performed

Figure 4 is a plan view of the mobile unit is mounted, the moving unit is moved up and down, back and forth

Figure 5 is a cross-sectional view of the tailstock to support the material and discharge the processed material.

Figure 6a, Figure 6b is a plan view and a front view of the discharge conveyor in which the processed material is discharged.

Figure 7 is a perspective view showing the state that the material is processed in the warring.

<Description of the symbols for the main parts of the drawings>

100: material supply unit 110: separator

120: material moving device 130: bar feeder (bar feeder)

200: work unit 300: headstock

310: power transmission unit of the main shaft 330: fastening portion of the main shaft

400: warring unit 410: warring unit motor

420: Warring 440: Encoder

450: fastening device 470: moving device

480: transfer tray 490: cross slide

500: tailstock 540: pipe

600: discharge part 610: discharge conveyor

The present invention relates to a lathe type processing apparatus equipped with a warping unit, and more particularly, a plurality of inserts are mounted along a circumference and a cutting ring is rotated at high speed to cut a material inserted into the circumference. It relates to an apparatus for processing.

A common method of machining spiral grooves on shafts is to cut them using lathes, tabs, thread milling cutters, and the like.

By the way, the cutting process using the lathe, tabs, thread milling cutter, etc. should be repeated several times using one tool to make a finished product. Therefore, it takes a lot of processing time, thereby increasing the processing cost.

In addition, it was difficult to cut smoothly with the above cutting methods in the case of a material having a very high hardness. Accordingly, the hardening operation such as heat treatment should be performed only after the cutting processing of the material is preceded. In this case, there may be a problem that the deformation of the material accompanying the heat treatment is accompanied.

In order to solve the above problems, a warring method has been developed. In this method, machining is completed in one cutting operation, and it is also possible to process hard materials.

The warring used in the warring method has a shape in which a plurality of inserts are arranged and arranged on the inner circumferential surface of the circular ring, as shown in FIG. 7, and the rotation center axis of the insert is parallel to the central axis of the material and is eccentric. .

After inserting the material into such a warring ring, the warring ring can be rotated at a high speed (6000 to 8000 rpm) to cut the material with the insert. At this time, since the center of rotation of the insert is parallel to the center axis of the material and is eccentric, all the inserts are in contact with the material one by one instead of simultaneously with the material for processing, thus cutting several times with one insert. You will get the same effect.

Therefore, the insert is repeatedly cut into small amounts of material in accordance with the rotation of the warring, so that the work can be completed in one machining, and it does not affect the material or the insert even when machining a material with high hardness. Smooth machining is possible.

However, the warring machine developed so far has the following problems.

First, in the case of a warping machine is provided with a moving device to which the warping unit is attached, which is a part corresponding to the carriage to which the tool post is mounted on a conventional shelf.

Therefore, if the machining can be carried out by removing the carriage from the conventional shelf and attaching the mobile unit to which the waring unit is attached, it is possible to obtain an advantage of not having a separate warping machine.

However, in the conventional lathe, the carriage can be moved from side to side in parallel with the ground, whereas in the case of currently commercialized waring machines, the moving device to which the warning unit is attached is transferred from side to side on the LM guide placed vertically to the ground. It is configured to be, and there is a problem that it is not easy to use to be compatible with the usual shelf.

Second, since the waring unit of the conventional warping machine is attached to the moving device by one support, there may be a problem in terms of the strength of the warping unit when working for a long period of time, and if the attachment strength is weakened, shaking or shaking occurs during processing. This may affect the precision of the processed product.

Third, the LM guide is used as a moving rail to transfer the moving device from side to side in the conventional waring machine. In many cases, thermal deformation occurs in the guide during long time operation, which adversely affects the precision of the processed product. .

Fourth, the existing warring machine has a configuration that returns to the material supply unit that initially supplied the material when you want to discharge the finished product. Therefore, the work process is interrupted during the discharge of the finished product and the supply of a new material, there is a problem that the loss of working time occurs.

The present invention has been proposed in order to solve the problems raised in the existing warring machine as described above has the following object.

First, an object of the present invention is to be configured so that the warping unit is attached to the moving device attached to the ground and the horizontal plane, so that it can be easily attached to the bed of the existing automatic lathe (CNC lathe).

Secondly, an object of the present invention is to ensure a stable operation without shaking during operation by using two supports when attaching the warring unit to the moving device.

Third, the present invention is configured to be transported by mounting a moving unit with a warring unit on the bed of a general shelf, the material of the bed is made of USite cast iron resistant to thermal deformation, high precision even when using a long moving device The aim is to be able to produce products.

Fourthly, the present invention provides a configuration in which the supply portion of the processed material and the discharge portion of the finished product are separately configured, so that the supply of the material before processing and the discharge of the product after the processing are made continuously so that the flow of work is not interrupted. For the purpose of

Lathe processing apparatus equipped with a warring unit according to the present invention for achieving the above object is a material supply unit for transferring the material to the work unit;

A headstock rotating at a low speed while fixing one end of the material supplied by the material supply unit by the chuck, a tailstock positioned at the other end of the material to support the material, and positioned between the headstock and the tailstock A work unit comprising a warring unit including a warring ring having an insert to produce a spiral groove while rotating around the spiral groove material at high speed;

Completion of the operation consists of an exhaust conveyor for moving the workpiece separated from the tailstock, the discharge portion consisting of a chip conveyor (chip conveyer) for moving the chip (chip) due to the cutting operation.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the shelf-type provisional factory equipped with a warring unit according to the present invention.

First, referring to Figure 1, the processing apparatus of the present invention is a material supply unit 100, a work unit 200 for processing the spiral groove of the material supplied from the material supply unit 100, the discharged material supplied from the working unit The discharge part 600 is made.

The material supply unit 100 is a separator 110 for extracting the loaded material one by one, a moving device 120 for positioning the separated material on the central axis of the main shaft 300, the main shaft 300 It consists of a bar feeder 130 (bar feeder) to push between the hollow. However, any device other than the device that pushes the loaded material to the headstock 300 individually may be used, and the material supply part related technologies are all known in the art.

Working unit 200 is the headstock 300 to rotate at a low speed while fixing the material supplied from the material supply unit 100, the warring unit 400 for cutting the material fixed to the headstock 300, the headstock It is composed of a tailstock 500 that supports the material fixed to the 300 on the opposite side of the main shaft 300.

The discharge unit 600 is composed of a discharge conveyor 610 and a chip conveyor 620. The discharge conveyor collects the material discharged from the tailstock 500 into the work box 618, and the chip conveyor collects chips generated during processing into a separate chip box. However, since the chip conveyor is a known technique, a detailed configuration thereof is omitted.

Referring to Figure 2, the main shaft 300 has a power transmission unit 310 for transmitting power to the fastening portion 330 on the right side, the main shaft 316 on the left side.

The fastening part 330 and the power transmission part 310 are connected by the main shaft 316.

The power transmission unit 310 includes a motor 311 at the lower end of the shelf, an idle shaft 313 at the top of the motor 311, a main shaft 316 at the top of the idle shaft 313, and the main shaft. And an encoder 319 on top of 316.

A circular tin motor color 312 is attached to the rotating shaft of the motor 311, and the idle pulley 314 having a round disc shape is attached to the idle shaft 313 and the color of the circular tin idle pulley at the rear of the idle pulley ( 315 is integrally formed.

The spindle 316 has a round disk-shaped spindle pulley 317, the front surface of the spindle pulley 317 is formed of a circular tain spindle color 318 integrally formed.

In addition, the encoder pulley 320 is attached to the rotary shaft of the encoder 319 in the shape of a round plate.

In this case, grooves are formed on the outer circumferential surfaces of the motor color 312, the idle pulley 314, the color of the idle pulley 315, the spindle pulley 317, the spindle color 318, and the encoder pulley 320. have.

At this time, the motor color 312 and the idle pulley 314 is primarily connected by the primary timing belt 321, the color 315 and the spindle pulley 317 of the idle pulley is the secondary timing belt 322. By secondary connection, the main shaft color 318 and the encoder pulley 320 is connected to the third by the third timing belt 323.

At this time, the main shaft 316 forms a hollow shaft in the center and the material is supplied through the hollow.

The fastening part 330 is composed of a chuck 331 and a gas cylinder 332 for moving the chuck 331, and the gas cylinder 332 is located at the rear of the chuck 331. The chuck 331 is located along the circumference of the material inside the hollow to fasten the material.

3A and 3B, the warping unit 400 is composed of a servo motor 410, a warring ring 420, a fastening device 450, and a rotation angle adjusting encoder 440.

The servo motor 410 is located above the warring ring 420, and the pulley 411 of the motor is fixed to the rotating shaft of the motor 410.

In addition, the front of the warring ring 420 is formed with a pulley 421 of the warring, the warring ring 420 is a thick circular plate, having a hollow shape in the middle and a triangular blade along the inner circumference of the circular plate Inserts 422 with are aligned.

At this time, both the pulley 411 of the motor and the pulley 421 of the ring has a rounded outer round plate.

However, the pulley 411 of the motor is a circular plate having a larger diameter than the pulley 421 of the ring, and the pulley 411 of the motor and the pulley 421 of the ring is surrounded by a metal cap 430. .

The waring unit 400 is attached to the left and right by the rotation angle adjustment shaft 452. In addition, both ends of the rotation angle control shaft 452 are supported by the support 451, and the support 451 is attached to the cross slider 490 at the lower end of the support 451. Therefore, when the rotation angle adjustment shaft 452 is rotated left and right, the entire waring unit 400 attached to the rotation angle adjustment shaft 452 is configured to rotate left and right. In addition, a rotation angle adjustment encoder 440 is attached to one end of the shaft, and when the shaft rotates left and right, the rotation angle adjustment encoder 440 measures the rotation angle of the waring unit 400.

4 is a view showing a moving device 460, the moving device 460 is installed on the bed 470 and the bed 470 for supporting and guiding the conveying table 480 and tailstock 500, It is composed of a conveyance table 480 sliding in the longitudinal direction of the raw material, and a cross slider 490 sliding vertically to the longitudinal direction of the raw material while being installed above the conveying table 480.

At this time, the waring unit 400 is fixed to the upper portion of the cross slider 490 is installed.

The drive unit of the feed table 480 includes a servo motor 481, a ball screw 482 for converting the rotational motion of the servo motor 481 into a linear motion, and a bearing for supporting the ball screw 482. 484 and 485 and a ball nut 483 which moves straight on the axis of the ball screw 482 as the axis rotates. At this time, the ball nut 483 is fixed on the bottom surface of the feed table (480).

In addition, the driving device of the cross slider 490 includes a servo motor 491 positioned to intersect with the driving device of the carriage 480, and a ball screw for converting the rotational motion of the servo motor 491 into linear motion. 492, bearings 494 and 495 for supporting the ball screw 492, and ball nuts 493 which move straight on the axis of the ball screw 492. Further, the ball nut 493 is fixed on the bottom surface of the cross slider 490.

Looking at Figure 5, it is located facing the opposite side of the headstock 300, there is a tailstock 500 that can support the material using the center 510. The tail stock 500 is attached to an upper portion of the body 530.

The center 510 is shaped like an arrowhead and has a shape that is narrow in the front and wider in the rear. The center 510 enters the warring ring 420 and is installed such that the center end thereof is located immediately after the insert 422.

A sleeve 520 is formed at an upper end of the body of the tail stock 500, and a long hollow hollow pipe 540 is fitted into the sleeve 520. The hollow part of the hollow pipe is connected to the hollow part of the center of the center 510.

Looking at Figures 6a and 6b,

The discharge conveyor 610 is a view showing the discharged conveyed material to the work box, the discharge conveyor 610 is a motor 611, a drive pulley 612 and the drive pulley 612 connected to the motor 611. The tension pulley 613 is spaced apart from the right side of the driving pulley 612 and the tension pulley 613 is wound around the belt 619.

In addition, tension plates 614 are formed at both ends of the tension pulley 613 to be perpendicular to the longitudinal direction of the tension pulley 613. A rotation shaft 613a is formed at the center of the tension pulley 613, and the rotation shaft 613a is fixed by an adjustment groove 614a formed in the tension plate 614 and a fastening device. The adjustment groove 614a is elongated in the left and right direction, so that the operator can easily move the position by releasing the fastening device to adjust the tension of the conveyor belt.

The driving pulley 612 and the tension pulley 613 are respectively mounted on a rectangular top plate 615, and the top plate 615 is supported by a metal box 616 in the form of a square box.

In addition, the left side of the driving pulley 612 of the discharge conveyor 610 has a drop chute plate 617 which is bent obliquely downward, and the lower left side of the drop chute plate 617 has a rectangular box shape opened upward. There is a work box (618). At this time, one end of the drop chute plate 617 has the same height as the upper portion of the belt 619, the lower end struck in the downward direction is located below the upper portion of the belt 619.

Referring to the operation of the device described above,

The materials are separately extracted by the separator 110, and the extracted materials as described above are positioned at the center of the bar feeder 130 one by one by the moving device 120.

The material located in the center is moved into the hollow inside of the headstock 300 by the bar feeder 130 moving along the rail in the longitudinal direction of the material.

As described above, the material located inside the hollow of the main shaft is fixed by the chuck 331.

The fixed material is rotated at a low speed in accordance with the rotation of the drive motor 311 of the main shaft, the warring ring 420 is located between the main shaft 300 and the tailstock 500 as the rotation of the low speed as described above The cutting of the material starts while rotating at this high speed.

After the cutting process, the newly supplied material by the bar feeder 130 pushes the already processed material in the tailstock direction, and the pushed material is discharged through the pipe 540 in the tailstock 500. Discharged to 610.

The processed material discharged as described above is loaded in the work box 618 through a conveyor, and the chips left after cutting are moved to a box prepared by a separate chip conveyor 620.

Referring to Figure 2, the headstock 300 is placed in the position where the material supplied by the bar feeder 130 to be processed, the gas cylinder 332 is operated to close the chuck 331, at this time was holding the material The bar feeder 130 puts the material back to its original position.

As described above, when the material is fixed by the chuck, the driving motor 311 rotates, and thus the idle shaft 313 and the main shaft 316 connected through the belt are also rotated at the same time. The encoder 319 located on the upper side detects the rotation speed of the main shaft 316.

When the material is finished processing, the gas cylinder 332 is moved again to open the chuck 331, the processed material is moved forward by the new material supplied from the rear.

Referring to Figures 3a, 3b and 4, the insert 422 is aligned along the inner circumference of the warring ring 420, so that the warring ring 420 rotates at high speed while cutting the material in the circumference. When cutting the material, the center axis of the material does not coincide with the rotational center axis of the warring ring 420 and is located by a predetermined distance, so that several inserts 422 simultaneously process the material surface when the warring ring rotates. Instead, the inserts 422 sequentially perform cutting of the workpiece surface one by one.

Thereby, the effect is as if several cutting operations were performed using one insert, and machining time can be shortened.

In addition, the warring ring 420 is capable of adjusting the spiral angle of the shaft to be processed by rotating the shaft 452 and the angle is precisely adjusted by the rotation angle adjustment encoder 440 attached to the warring unit 400 do.

The processing length of the material can be adjusted by determining the conveying length of the conveying table (480).

In addition, the processing depth of the material, that is, the height of the thread of the shaft is adjusted by the movement of the servomotor 491 located at both ends of the cross slide 490. At this time, the movement direction of the cross slide 490 crosses and moves at right angles to the movement direction of the feed table 480.

4 is a view showing the moving device 460. The feed table 480 moves in the longitudinal direction of the material as the ball nut 483 inserted into the ball screw 482 moves forward and backward. At this time, the ball nut 483 is fitted on the ball screw 482 to rotate together with the servo motor 481 serves to change the rotational movement of the ball screw 482 to linear movement.

In addition, the cross slide 490 is located on the upper portion of the carriage 480 and slides on the carriage 480, the ball screw 482, the servo motor in the same form as the carriage 480 491 and the ball nut 493 moves perpendicularly to the longitudinal direction of the material.

At this time, the transfer table 480 slides on a bed made of minite cast iron instead of a general bed, so that there is no thermal deformation. Accordingly, even when used for a long time, the transfer table 480 can produce a high-precision product.

Figure 5 shows the tailstock 500, when the material is supplied, one end is fixed by the main shaft 300 and the other end is supported by the tailstock 500.

The material fixed and supported by the headstock 300 and tailstock 500 is processed by a warring ring 420. At this time, the tail stock 500 is located immediately after the warring ring 420. That is, the material is supported immediately behind the surface to be processed, and the vibration of the material generated by the high-speed rotation of the warring ring 420 is minimized, thereby enabling high precision processing.

When the cutting of the material is completed, the new material supplied by the bar feeder 130 pushes the finished material into the presser rod 500.

As described above, the material pushed into the tailstock 500 moves in the direction of the discharge part 600 along the pipe 540, and the sequence of "processing completed → supplying new material → moving the discharged part of the finished material" is performed. As repeated, the materials in the pipe 540 move one by one to the discharge conveyor 610 of the discharge part 600.

Looking at 6a and 6b, it represents the discharge portion 600 of the material, the processing material discharged from the pipe 540 of the tail stock 500 falls on the upper belt to the discharge conveyor 610 and the movement of the belt 617 According to the material is transported to the drop chute plate 617 and the material transported as described above is dropped to the work box 618.

The belt of the discharge conveyor 610 is rotated by the rotation of the drive pulley 612 and the tension pulley 613, whereby the finished material falling on the belt 619 is moved to the work box 618. In this case, the driving pulley 612 is directly connected to the motor 611, so that when the motor 611 rotates, the driving pulley 612 also rotates at the same time, in the case of the tension pulley 613 tension plate 614 By adjusting the position from side to side by the () is to adjust the tension of the belt 619. At this time, the tension pulley 613 is fixed to the rotation shaft 613a by a simple fastening device to the tension plate 614, the tension can be easily adjusted according to the needs of the user.

As described above, the present invention according to the present invention has the following advantages.

First, since cutting is performed continuously using a plurality of inserts it is possible to reduce the machining time than cutting using a single insert.

Second, the mobile unit equipped with the warring unit 400 is configured to be transported on the horizontal plane and the ground, so that it can be easily attached on the bed of the existing automatic lathes (CNC lathe) by excellent in terms of compatibility and equipment of Efficiency can be achieved.

Third, by using the minamide cast iron in the bed surface of the shelf transfer table, there is no heat deformation even after long-term use, it is possible to obtain a high-precision product for a long time.

Fourth, the chuck 331 for fixing the tool is improved in accuracy and durability than the hydraulic type by using the gas cylinder 332 method.

Fifth, the center portion of the tail stock 500 can be positioned closer to the cutting tool of the warring ring 420 by narrowing the front portion in the shape of an arrowhead to enable precise and stable machining.

 Sixth, by pushing the processed product in the unloading part of the product it is possible to continuous processing work is advantageous in terms of working time.

Claims (5)

And the material supply unit 100 for supplying the loaded material to the work unit 200 individually, Headstock 300 having a chuck for fixing one end of the material supplied from the material supply unit and tailstock 500 and the main shaft for supporting the other end of the material fixed by the chuck in a position facing the headstock A plurality of inserts 422 are arranged along the inner circumference and positioned between the rod and the tailstock, and the warring ring 420 and the warring ring are laterally rotated while cutting the material passing through the inserts at high speed. Waring unit 400 consisting of a support angle and the rotation angle adjustment shaft 452 is installed to enable left and right rotation and the two support 451 connecting the both ends of the rotation angle adjustment shaft 452 and the cross slide 490 And a cross slide 490 seated on a bed 470 and positioned on an upper portion of the transfer table 480 for moving the bed 470 to the left and right, and slidably moved forward and backward on the transfer table. Work part 200 and made of, Lathe type processing apparatus equipped with a warring unit, characterized in that the discharge unit 600 is installed on the rear of the tail stock 500 is discharged the finished material from the work unit 200 The method of claim 1, The material supply unit 100 for supplying the material includes a separator 110 for separating and extracting the loaded materials one by one, a material moving device 120 for placing the extracted material at the center of the bar feeder 130, and the material movement. Lathe processing device equipped with a warring unit, characterized in that consisting of a bar feeder 130 for pushing the material supplied from the device 120 into the hollow portion inside the headstock 300 The method of claim 1, The discharge unit 600 is Characterized in that it consists of a discharge conveyor 610 for receiving the processed material discharged to the rear of the tail stock 500 and the drop chute plate 617 which is installed at an end obliquely downward to the end of the discharge conveyor. Lathe processing equipment with warping unit The method of claim 1, The main shaft 300 is the power of the variable speed servo motor 311 is transmitted by the timing belt (Timing-belt) (321,322,323), the chuck 331 which is operated by the gas cylinder 332 for fixing the material Lathe processing apparatus is equipped with a warring unit characterized in that it has. delete

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