KR20150018303A

KR20150018303A - Deburring apparatus for machining parts

Info

Publication number: KR20150018303A
Application number: KR1020130095042A
Authority: KR
Inventors: 정영복; 김익곤
Original assignee: 주식회사 메탈텍
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2015-02-23

Abstract

The present invention relates to a deburring device for machined parts, which comprises an indexing stacker for stacking a plurality of objects to be deburred and sequentially feeding the objects, a gripping mechanism for sensing and gripping an object to be debucked on the indexing stacker, A rotary table arranged in a circumferential position for each deburring process; and a rotary table for rotating the rotary table for each deburring process. And a driving unit for rotating the table intermittently to the next process position; a brush unit disposed in the upper part of the process table for deburring the deburred object chucked by the holder; And a turning unit for reversing the object to the opposite side.
According to the present invention as described above, burrs in respective portions to be deburred by the deburring rotary brush unit, which is continuously supplied to the process table and arranged for each process, are sequentially removed while being moved. Thus, the time required for machining is greatly shortened, and the operator does not have to repeat the simple operation. In addition, there is no fear that the burr removing process of the operator is omitted, uneven removal work, and the like are eliminated, thereby improving the quality and productivity.

Description

[0001] DEBURRING APPARATUS FOR MACHINING PARTS [0002]

The present invention relates to a burr removing apparatus for machined parts, and more particularly to a burr removing apparatus for automatically removing burrs remaining on parts after machining of automotive parts produced by a casting or forging process.

In general, automobiles have a service life of more than 10 years. Particularly, parts used in engines are very important factors to prevent noise and vibration and to improve durability.

More than 30% of the automotive parts are produced by the casting process, and more than 90% of transmissions and steering gear are produced by sintering or forging. Parts produced by casting, sintering and forging processes must be post-processed to meet the level of dimensional accuracy required by automobiles. Such a post-process carries out a machining process for turning or finishing to adjust the dimension and a heat treatment and a surface treatment process for improving durability.

Particularly, since the hub gear (Hub Gear), which is used in a transmission of an automobile and is a main component for controlling the speed by transmitting power, is important in dimensional precision, since the cleanliness of the transmission needs to be increased, it is required to satisfy the required surface roughness It is necessary to completely remove burrs remaining on the wafer.

Generally, the hub gears are subjected to sintering, CNC lathe, and burrs on the end of the CNC lathe. FIG. 1 shows a typical hub gear DH, in which a portion where burrs are intensively generated after CNC lathe machining is represented by a red circle. As shown in the figure, there is a processing problem that the key groove portion KY, which is a nonconsecutive intermittent section, is formed in the side end portion of the hub gear, thereby lowering the machining speed and shortening the tool life. Above all, It is the processing burr that remains at the marked end.

The machining burrs generated at the end portions of the inner teeth IT and the outer teeth OT other than the portions indicated by the red circles can be easily removed by a simple additional process but the key groove portion KY in the red circle has a deep end shape, It is not easy to remove it, and conventionally, it has been difficult to manually remove a lot of work air.

For example, the actual lathe machining time of the unit hub (DH) gears takes about 45 seconds for each of the front and rear surfaces, while the machining burr of the key groove portion KY is manually removed for about 50 seconds or more In addition, there is a problem that the burr removing operation is not easy.

Therefore, the time required to manually remove the burrs is longer than the time required for the machining process, which is a major cause of the machining process burden, and the increase in the work fatigue due to the repetition of the simple work of the worker, There are problems such as occurrence of defective quality due to omission, uneven removal work or the like, and lowering of productivity.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic deburring device capable of improving productivity and improving quality.

The object of the present invention is to provide an indexing stacker for stacking a plurality of objects to be deburred and sequentially feeding the indexing stackers, a gripping mechanism for sensing and gripping the objects to be debucked on the indexing stacker, A rotary table rotatably chucking an object to be deburred which is moved and supplied by the transfer unit, a rotary table arranged circumferentially for each deburring process, And a driving unit for rotating the table intermittently to the next process position; a brush unit disposed at an upper portion of the process table for deburring the deburred object chucked by the seating holder; Turning Unilateral to Reverse to Deburr the Back of the Object Lt; / RTI >

Here, the indexing stacker includes at least one unit upright supporting member that supports a plurality of units in an upright direction so as to continuously supply the objects to be deburred automatically, a rotating circular plate in which a plurality of upright supporting members are arranged circumferentially, And an elevating mechanism for pushing up the object to be deburred inserted and supported in the upright support body at a specific position successively and intermittently to the uppermost position.

The elevating mechanism includes an elevating screw for sequentially pushing up the object to be deburred mounted on the unit upright supporting body in the vertical direction, and a lifting and lowering driving unit for driving the elevating screw.

The transfer unit includes a finger chuck for chucking the object to be deburred to move or discharge the deburred object or the deburred object to the top of the unit upright support at a specific position of the indexing stacker in the vertical or horizontal direction, And a pneumatic transferring cylinder for discharging or moving the chucked deburring object.

The transfer unit may further include a detection sensor for detecting whether or not the deburred object is pushed up to the uppermost position of the unit upright support at the leading end of the chucking mechanism in order to recognize the object to be deburred.

The seat holder includes a pneumatic chuck for horizontally chucking the deburred object carried by the pneumatic cylinder, a drive gear for engaging the lower rotary shaft to rotate the object to be debucked chucked by the pneumatic chuck, And a driving unit that rotates the entirety of the seat holder all at once.

Further, the brush unit is disposed for each process and deburls the deburred object chucked in the seat holder. The brush unit for deburring includes a rotating brush of a metal polishing cloth and a driving motor for rotating the rotating brush, and is installed directly above the seating holder disposed in the process table. The brush unit disposed in each process deburls the inner and outer teeth of the deburred object moved to the corresponding position and the groove portion simultaneously.

The rotary shaft of the rotary brush for deburring the inner and outer teeth of the object to be deburred is arranged in the transverse direction with respect to the rotary shaft of the process table to rotate in a predetermined direction and the rotary shaft of the rotary brush for deburring the groove is parallel to the rotation axis of the process table So as to rotate in the forward and reverse directions in order to remove the burr of the circular groove portion.

The turning unit includes a head unit for gripping an object to be deburred which is placed on a seat holder for performing deburring on both sides by changing front and rear faces of the object to be deburred, a rotating cylinder for reversing the head unit in the opposite direction, And a horizontal moving cylinder for moving the horizontal moving cylinder in the horizontal direction.

According to the present invention, the deburred object is continuously supplied to the process table without the operator's intervention, and burrs in each portion to be deburred are sequentially removed while being moved by the deburring rotating brush disposed for each process. In addition, the deburring operation of the key groove portion, which has been relied on manually, has been deburred by a deburring rotating brush that rotates forward and backward. As a result, the manual operation of the key groove portion is eliminated, the time required for the machining is greatly shortened, and the operator does not have to repeat the simple operation. In addition, there is no fear that a worker is missing a removal process or an uneven removal work, thereby improving quality and productivity.

1 is a perspective view of a hub gear which is an object to be deburred;
2 is a plan view of a burr removing device of a machined part according to an embodiment of the present invention;
Figure 3 is a side view of Figure 2;
FIG. 4 is a plan view of a burr removing apparatus according to an embodiment of the present invention, viewed from above. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a burr removing apparatus of a machined part according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figs. 2 and 3 are a plan view and a side view of a burr removing device of a machined part according to an embodiment of the present invention.

The present embodiment will be described using a hub gear DH, which is a main component of a vehicle transmission, as a subject to be deburred. As shown in the figure, the present invention includes an indexing stacker 100 for stacking hub gears DH, a transfer unit 200 for gripping and moving sequentially the hub gears DH mounted on the indexing stacker 100 A positioning table 300 for chucking the hub gear DH supplied by the transporting unit 200 and a process table 400 in which the positioning holder 300 with the hub gear DH is chucked A brass unit 500 provided for each of the processes arranged in the process table 400 and a turning unit 600 for reversing the hub gear DH in the middle of the deburring process.

The indexing stacker 100 includes a rotating disk 120, a unit upright support 110 disposed along the circumference on the rotating disk 120, a deceleration driving motor 130 for rotating the rotating disk 120, And an elevating mechanism 140 for pushing up the hub gear DH mounted on the support 110 to the uppermost position.

The rotation axis of the rotation disc 120 is coupled to the drive shaft of the speed reduction drive motor 130. The speed reduction drive motor 130 is connected to an angle division index sensor (not shown) coupled to the rotation disc 120, And stops at a position where the transporting unit 200 can be chucked.

The lifting mechanism 140 is fixed to a lower portion of the unit upright supporting body 110 stopped at the chucking position of the conveying unit 200. The elevating mechanism 140 includes a hub gear DH mounted on the unit upright supporting body 110, An elevating screw 142 for sequentially pushing up the elevating screw 142 in the vertical direction and a elevating driving part 144 for driving the elevating screw 142.

The lifting mechanism 140 installed at the lower part of the unit upright support 110 rotates the upright upward screw 12 in the forward and reverse directions and sequentially rotates the hub gears DH mounted on the unit upright support 110 one by one, Push up. The hub gear (DH), which is pushed up to the uppermost end, is gripped and transported by the finger chuck (220) of the transport unit (200).

An optical or electronic detection sensor 250 for detecting whether the hub gear DH has been pushed up to the uppermost portion or not is provided at the tip end of the unit upright support 110 or at the tip end portion of the holding mechanism 210 of the feed unit 200 And the lift mechanism 140 is raised and lowered by the detection signal of the detection sensor 250 and the signal of the control device.

When all of the hub gears DH mounted on the unit upright support 110 at the stopped position are chucked, the detection sensor senses the signals and transmits a signal to the control unit (not shown) The lowered rotating screw is lowered. The next control unit rotates the rotary disk 120 and rotates the unit upright supporting body 110 on which the hub gear DH is mounted to the stop position where the lifting mechanism 140 is fixed.

In this embodiment, twelve unit upright supporting members 110 are disposed on one rotary disc 120 and eighteen hub gears DH are mounted on each unit upright supporting member 110, A total of 216 pieces can be stacked.

However, the amount of water that can be loaded on the indexing stacker 100 varies depending on the size of the hub gear DH, the arrangement on the rotary disk 120, and the like, and also the hub gear DH is mounted on the indexing stacker 100 It is also possible to carry out the work by attaching a separate automatic racking equipment, but it is preferable to manually place it by a worker in the case of a small number of kinds.

As described above, the hub gear DH pushed up to the upper end of the unit upright support 110 descends with the gripping mechanism 210 of the feed unit 200, and the finger chuck (not shown) mounted on the lower end of the gripping mechanism 210 (Not shown). The up and down movement of the gripping mechanism 210 is preferably a pneumatic cylinder, and the finger chuck 220 is preferably composed of a tripple jaw operating with a simple structure or operation.

The hub gear DH chucked by the finger chuck 220 is lifted by the lifting operation of the gripping mechanism 210 and moved to the upper part of the process table 400 in the horizontal direction of the pneumatic transferring cylinder 230. The hub gear DH moved above the process table 400 lowers the gripping mechanism 210 and releases the finger chuck 220 to place it on the pneumatic chuck 310 of the seating holder 300. [

At this time, the finger chuck 220 having the hub gear DH mounted on the seat holder 300 moves laterally to chuck the adjacent hub gear DH having completed the deburring operation, and moves toward the indexing stacker 100 And then dropped on the discharge passage 240 in the middle. It is preferable that the discharge passage 240 is inclined so that the hub gear DH slips down. However, when surface damage is a concern, or when a transfer is stored at a remote place, a power-driven conveyance belt may be applied.

The seat holder 300 includes a pneumatic chuck 310 for chucking the hub gear DH mounted thereon, a driving gear 320 and a driving gear 320 coupled to the lower portion of the rotary shaft of the pneumatic chuck 310, . The hub gear (DH) placed on the pneumatic chuck (310) is chucked and fixed in a triple trough of the pneumatic chuck (310). In addition, the seating holder 300 disposed on the process table 400 connects the lower driving unit 330 with a rotating belt (not shown) to rotate the entire driving unit 330 by one driving unit 330. By rotating the seat holder 300, that is, the hub gear DH, deburring in all directions is performed evenly.

FIG. 4 is a plan view of a bar removing device manufactured according to an embodiment of the present invention. As shown in the figure, in the present embodiment, after the hub gear DH is chucked by the seat holder 300, The deburring operation performed on the table 400 may include at least one of IT deliming, OT deburring, HO deburring, flipping of the hub gear DH for deburring the other side, deburring of the groove HO, (IT) deburring, OT (OT) deburring, and discharging.

Therefore, the seat holder 300 is placed and fixed on the rotary table 410 of the process table 400 including the above-described process and the atmospheric process, so that the process table 400 is intermittently rotated .

A brush unit 500 is installed and fixed directly above the seating holder 300 positioned in each process. The brush unit 500 includes a driving motor 510 and a rotating brush 520 coupled to a shaft of the driving motor 510.

The rotation axis of the drive motor 510 is horizontally installed in the radial direction with respect to the rotary table 410 of the process table 400 and the rotary brush 520 Performs a deburring operation while rotating in the vertical direction with respect to the side surface of the hub gear DH which is chucked with the side surface of the seat holder 300 upside down. Brushes for removing internal teeth (IT) and external toothbrush (OT) burrs are made of steel and stainless steel and composite materials of approximately 0.3 to 1.0 mm thickness distributed on the market.

The rotating shaft of the driving motor 510 is installed in a vertical direction with respect to the rotary table 410 and the rotary brush 520 is rotated in the horizontal direction with respect to the side surface of the seating holder 300, . 1, the groove HO formed in the hub gear DH is recessed in the circumferential direction, and the key groove KY is formed in the middle of the depression with a deep end shape.

Since the groove portion HO is already formed in the casting or forging process, many burrs are generated and remain at the end portion of the key groove portion KY that is lathe processed in the post-process. Therefore, the rotary brush 520 used in the deburring step () of the groove (HO) uses a cup type having a substantially HO diameter, and performs a deburring operation while rotating the cup type rotary brush 520 in the forward and reverse directions .

The turning unit 600 includes a head portion 610 having a shrinking and expanding grip portion operated by air pressure, an air pressure rotating cylinder 620 for rotating the head portion 600 in the horizontal axis direction, And a horizontally moving cylinder for horizontal movement.

Further, the turning unit 600 is disposed at the intermediate position of the deburring process and inverts the hub gear DH by using the pneumatic rotary cylinder mechanism to deburce the rear surface of the upper surface deburred hub gear DH. The chucking of the triple jaw of the seat holder 300 is released to reverse the hub gear DH and the head portion 610 of the turning unit 600 approaches to hold the hub gear DH, The rotation of the pneumatic rotary cylinder 620 coupled to the hub gear DH rotates 180 times to seat the seat holder 300 again. The hub gear DH seated in the seat holder 300 is chucked in the triple tank of the seat holder 300 and moved to the next step.

The hub gear DH which is the object to be deburred is manually placed on the index stacker 100 and supplied to the process table 400 by the transfer unit 200. The hub gear DH, (DH) is chucked and rotated by the seat holder 300 disposed on the process table 400 and is sequentially moved to the deburring process (~) by intermittent rotation of the process table 400 so that both front and rear surfaces are both deburred and discharged .

DH: Hub gear (= subject to deburring)
IT: natal Ot: shout
HO: groove portion KY: key groove portion
100: indexing stacker 110: unit upright support
120: rotation disc 130: deceleration drive motor
140: lifting mechanism 142: lifting screw
144: Lift motor
200: transfer unit 210: holding mechanism
220: Finger chuck 230: Pneumatic transfer cylinder
240: exhaust passage 250: detection sensor
300: seat holder 310: pneumatic chuck
320: driving gear 330:
400: process table 410: rotary table
420: Driving device
500: Brush unit 510: Drive motor
520: Rotating brush
600: turning unit 610: head unit
620: rotating cylinder 630: horizontally moving cylinder

Claims

An indexing stacker for stacking a plurality of objects to be deburred and sequentially supplying them,
A conveying unit including a gripping mechanism for sensing and gripping an object to be deburred mounted on the indexing stacker, and a pneumatic cylinder for conveying the object to be deburred held by the gripping mechanism,
A rotary table arranged circumferentially for each deburring step; and a drive unit for intermittently rotating the rotary table to a next process position, A process table including an apparatus,
A brush unit disposed at an upper portion of the process table for deburring the deburred object chucked by the placement holder,
And a turning unit for reversing the object to be deburred to the opposite side in the middle of the deburring step.

The method according to claim 1,
The indexing stacker includes at least one unit upright support supporting a plurality of objects to be deburred in an upright direction, a rotary disk having a plurality of circumferentially arranged unit upright supports, a deceleration driving motor for driving the rotary disk, And an elevating mechanism for sequentially and intermittently pushing an object to be deburred, which is inserted into and supported by the upright support body, at a specific position to the uppermost position.

The method of claim 2,
Wherein the elevating mechanism includes an elevating screw for pushing up the object to be deburred which is placed on the unit upright support, and a lift driving part for driving the elevating screw.

The method according to claim 1,
Wherein the transfer unit comprises a finger chuck for chucking an object to be deburred or an object to be deburred which is pushed up to the top of the unit upright support at a specific position of the indexing stacker, And a transfer cylinder.

The method according to claim 1 or 4,
Wherein the transfer unit further comprises a detection sensor for detecting whether or not an object to be deburred is pushed up to the uppermost portion of the unit upright support body.

The method according to claim 1,
Wherein the positioning holder includes a pneumatic chuck for chucking an object to be deburred, a driving gear coupled to a lower rotational shaft of the pneumatic chuck, and a driving unit for connecting the driving gear as a whole and rotating the whole driving gear by a belt. Removal device.

The method according to claim 1,
The brush unit includes a driving motor and a rotating brush of a metal polishing cloth. The brush unit is disposed directly above the seating holder disposed on the process table. The brush unit deburls the internal teeth, external teeth, and grooves on one side of the deburring object simultaneously And a brass unit for simultaneously deburring the inner and outer teeth of the brush unit and the outer surface of the other surface and the groove.

The method of claim 7,
Wherein the rotary shaft of the rotary brush is arranged in the transverse direction with respect to the rotary shaft of the process table and is rotated in a predetermined direction.

The method of claim 7,
Wherein the rotary shaft of the rotary brush is arranged parallel to the rotation axis of the process table and rotates in the forward and reverse directions.

The method according to claim 1,
Wherein the turning unit includes a head for holding an object to be deburred which is seated in the seat holder, a rotating cylinder for reversing the head in the opposite direction, and a horizontal moving cylinder for moving the head and the rotating cylinder in the horizontal direction Wherein said burr removing device is a machining tool.