KR101095839B1 - Automatic blank shaft machine - Google Patents

Abstract

PURPOSE: A worm shaft shape machining apparatus is provided to reduce the total cycle by simultaneously enforcing machining for two pieces of unit steel bars. CONSTITUTION: A worm shaft shape machining apparatus comprises a steel bar supply unit(100), a saw station(200), a transfer conveyor(300), a transfer unit(400), a chamfer station(500), a drilling station(600), a groove station(700), and a steel bar transferring clamping unit. The steel bar supply unit supplies a steel bar one by one to the longitudinal direction of a bar. The saw station cuts the steel bar into pieces of unit steel bars using the cutter wheel. The transfer conveyor transfers the cut unit steel bar. The chamfer station, drilling station and the groove station are proceeding the chamfering, drilling and grooving using a cutting tool about the unit steel bar.

Description

Worm shaft shape processing equipment {Automatic blank shaft machine}

TECHNICAL FIELD The present invention relates to a worm shaft shape processing apparatus, and more particularly, to a high speed and simultaneous machining type turning machine for shaping a steel bar before completing a worm shaft.

Generally, it is used to transmit power in the vertical direction while forming a 90 ° center axis relationship with the worm shaft and the worm wheel, and the worm shaft and the worm wheel are combined with one set of gears unlike other gears. A large gear ratio of about 1/70 can be obtained.

Therefore, the worm shaft and the worm wheel have the advantage that the size of the worm shaft and the worm wheel can be reduced by about 1/2 compared to the mechanism using other gears when trying to transmit the same power. It is used in various fields throughout the industry due to its high transmission efficiency because it transmits power by the power source, and is particularly used for mechanical devices that transmit power.

These worm shafts and worm wheels are being manufactured through automated dedicated grinding machines, which are increasingly productive and precise, in line with the increasing demand for precision machining of mechanical components requiring high precision. It is a trend.

Usually, in the case of a worm shaft, a steel shaft is subjected to a blank shaft such as grooves or the like in order to facilitate the worm shaft processing before the worm gear is processed in earnest to the steel bar.

At present, domestic and foreign shaft manufacturers have a problem that a lot of material loss (about 150-300 mm) occurs because they are processed by CNC lathes or general lathes.

For example, conventionally, since the shape processing is performed in the state of being bitten by the chuck without cutting the 3m steel bar, the material loss corresponding to the length of the bar of the chuck bite is always generated.

In addition, conventionally, since the shape processing is performed intermittently, such as the shape processing is performed in the order of cutting → shape processing → cutting → shape processing, there is a disadvantage in that the processing time is long, which leads to a limitation in mass production. Etc., there is a problem that causes a decrease in overall production.

On the other hand, in consideration of the above problems, the center facing MC developed by "NEOTIS" reduces the material loss because the first saw saw 3m steel bar, but this is also an expensive dedicated grinding machine As a result, there is a significant economic burden to use except for a professional company that mainly produces mass production.

Therefore, in order to increase technological competitiveness and gain an edge in cost reduction, development of faster and more accurate equipment is required.

Accordingly, the present invention has been made in view of the above, and a series of saw stations for cutting a 3m steel bar to a suitable size when machining a worm shaft shape, a chamfer for the steel bar, and each station divided for drilling and groove processing By placing on the automated line and implementing a new shape processing system that performs the entire process from saw cutting to shape processing in a continuous automated process, the loss of material in the process can be reduced, and the speed and accuracy of the shape processing Of course, an object of the present invention is to provide a worm shaft shape processing apparatus capable of improving overall productivity.

In addition, the present invention transfers the 3m steel bar to the chain conveyor by two pieces after the saw cutting, and then by constructing a new dual-type shape processing line to simultaneously process both ends of the two pieces of steel bar in three shape processing stations, Another object is to provide a worm shaft shape processing apparatus that can significantly shorten the cycle time during shape processing.

In order to achieve the above object, the worm shaft shape processing apparatus provided by the present invention has the following features.

The worm shaft shape processing apparatus is a steel bar supply unit for supplying one steel bar in a longitudinal direction of a bar as a predetermined amount of steel bars are loaded, and the steel bar supplied from the steel bar supply unit by using a cutter wheel for each unit steel A sawing station for cutting immediately, a transfer conveyor for transporting the unit steel bars cut at the saw station, and a transfer unit positioned at a rear end of the transport conveyor and inverted by 90 ° in the width direction for moving in the longitudinal direction; A chamfer station, a drilling station and a groove station, which are sequentially arranged along the traveling direction of the unit steel bar as a means for performing chamfering, drilling and groove processing of the unit steel bar using cutting tools, respectively, and the chamfer station and the drilling station. And groove stations The steel bar has a structure that includes a steel bar feed and clamp unit which is arranged side by side along the traveling line of the unit steel bar from the front to transfer the unit steel bar to each machining area for chamfering, drilling and groove processing. High speed machining, as well as two-piece simultaneous machining, reduce overall cycle time.

Here, the steel bar supply unit is a steel bar loading portion which is placed side by side while the plurality of steel bars having a predetermined length in contact in the width direction and passing the steel bar one by one, and arranged side by side next to one side of the steel bar loading portion It consists of a structure that includes a steel bar feeder for conveying one steel bar passed to the steel bar loading part in the longitudinal direction by using a plurality of rollers and feeders that are positioned, so that steel bars having a length of about 3 m can be efficiently supplied one by one. There are features that can be.

And, in the case of the saw station, it may be composed of a saw machine and jig block, the saw machine has a cutter wheel that is rotated by the saw motor and moves in the width direction of the device while entering the steel bar progress line to cut the steel bar The jig blush muscle saw machine is disposed opposite to the wheel groove for the entry of the cutter wheel and is arranged to hold the steel bar during the cutting operation.

In particular, the chamfer station, the drilling station and the groove station may have a similar structure as a whole except for the type of cutting tool for the machining. Preferably, the block assembly serving as the support and the block assembly are installed in the block assembly. The rear end is installed in a structure that is horizontally supported on the block assembly via a bearing on the block assembly, the rear end is connected to the drive motor side and the electric drive, the rotatable drive shaft, coupled to the front end of the drive shaft using a cutting tool A driving head for processing a unit steel bar, a ball screw which is combined with a block assembly to move the cutting tool in the width direction of the cutting tool, and a forward and backward motor connected to the rear end of the screw for rotation of the ball screw; On the base plate to move the block assembly It may be made of a structure including an LM guide for guiding.

Meanwhile, in the case of the steel bar feed and clamp unit, a chain conveyor is installed side by side along the steel bar progress line while passing through each processing area for chamfering, drilling and groove processing, and at a predetermined pitch interval on the chain conveyor. As a transport block to be installed, a steel bar setting block to be installed at the upper end of the transport block as the unit steel bar is placed, and means for fixing the steel bar is located in each processing area for the chamfering, drilling and groove processing And a position fixing clamper installed on the upper cylinder plate of the conveyor frame and a position fixing clamper installed on the rod of the position fixing cylinder and pressing the steel bar placed on the steel bar setting block while moving up and down. Can be.

Worm shaft shape processing apparatus provided by the present invention has the following advantages.

First, the sawing station for cutting the material and the chamfering, drilling and groove stations for the chamfering, drilling, and groove processing of the cut material are built automatically to build an automated line, and the shape of the material By performing the entire process up to the process in a continuous automated process, it is possible to reduce the loss of the material in the process, and to implement the high-speed processing and simultaneous processing for the material has the advantage that can improve the overall productivity.

Second, by dividing the shape processing of the material by station and applying it to three stations (chamfer station, drilling station and groove station) by two pieces at the same time, the both ends of the material are processed simultaneously, thereby dramatically reducing the overall cycle time required for shape processing. It can be shortened (improved from 16sec to 6sec) and has the advantage of increasing the efficiency of shape machining.

1 is a plan view showing the overall layout of a worm shaft shape processing apparatus according to an embodiment of the present invention
Figure 2 is a plan view showing a steel bar supply unit in the worm shaft shape processing apparatus according to an embodiment of the present invention
Figure 3 is a plan view showing a saw station in the worm shaft shape processing apparatus according to an embodiment of the present invention
4 is a plan view showing a chamfer station, a drilling station and a groove station in a worm shaft shape processing apparatus according to an embodiment of the present invention.
Figure 5 is a side view showing a chamfer station and a drilling station in the worm shaft shape processing apparatus according to an embodiment of the present invention
Figure 6 is a side view showing a groove station in the worm shaft shape processing apparatus according to an embodiment of the present invention
Figure 7 is a side view showing the steel bar feed and clamp unit in the worm shaft shape processing apparatus according to an embodiment of the present invention
Figure 8 is a plan view showing the overall process flow of the worm shaft shape processing apparatus according to an embodiment of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing the overall layout of a worm shaft shape processing apparatus according to an embodiment of the present invention.

As shown in Figure 1, the worm shaft shape processing apparatus is a device for processing the shape of the chamfer, drilling, grooves, etc. in the steel bar prior to processing the worm gear teeth on the steel bar, supplying a steel bar having a length of about 3m The steel bar supply unit 100 is disposed on the front end side (left side of the drawing) of the apparatus, and the saw station 200 is disposed behind the chamfer station 500 and the drilling station. 600 and groove station 700 are arranged in turn to the rear end of the device (right side of the drawing).

In this case, the chamfer station 500, the drilling station 600 and the groove station 700 is used to perform the chamfer processing, drilling processing and groove processing for the unit steel bar in order using the corresponding cutting tools, respectively.

In addition, a transfer conveyor 300 is disposed between the saw station 200 and the chamfer station 500 to transfer the unit steel bar cut to a predetermined dimension, and the rear end region of the transfer conveyor 300 includes a unit steel bar. Transfer unit 400 for switching the posture is arranged.

At this time, the transfer unit 400 inverts the unit steel bar running in the longitudinal direction by 90 ° on the transfer conveyor 300 so as to face in the width direction, and then moves to the steel bar feed and clamp unit 800 which will be described later. It will play a role.

Here, the transfer conveyor 300 may be applied to a normal belt conveyor, the transfer unit 400, although not shown in the figure, a combination of a plurality of linear motion and fingers, for example lifting LM unit, It can be composed of a combination of a linear transfer LM unit, a rotating cylinder, a finger for picking up the unit steel bar.

In addition, a steel bar feed and clamp unit 800 is disposed in front of the chamfer station 500, the drilling station 600, and the groove station 700, and the steel bar feed and clamp unit 800 is a unit steel bar. Side by side along the progress of the line serves to transfer the unit steel bar to each machining area for chamfering, drilling and groove processing.

In particular, the present invention provides an effective machining station layout that can significantly increase the productivity by significantly reducing the machining cycle time.

To this end, the chamfer station 500 for chamfering the unit steel bar and the drilling station 600 for the drilling process are each made of a dual type for simultaneously machining two pieces of unit steel bars with two cutting tools.

For example, two processing machines are arranged side by side in each station, and cutting tools are mounted in each processing machine so that machining of two pieces of unit steel bars in the unit steel bar progress line can be simultaneously performed.

In this way, the shape processing for the unit steel bar is divided by station and performed by two pieces, thereby significantly reducing the cycle time.

In addition, in the case of the chamfer station 500 and the drilling station 600, each of which is disposed at positions facing each other with the steel bar feed and clamp unit 800 interposed therebetween, that is, the unit steel bar progress line therebetween. As a set, both ends of a single steel bar can also be machined simultaneously, which in turn helps to shorten the machining cycle time.

On the other hand, in the description of the present invention, the longitudinal direction means the steel bar in the longitudinal direction, the width direction of the steel bar in the radial direction, the device width direction in the Y-axis direction, the device longitudinal direction means the X-axis direction, respectively.

Figure 2 is a plan view showing a steel bar supply unit in the worm shaft shape processing apparatus according to an embodiment of the present invention.

As shown in Figure 2, the steel bar supply unit 100 is a place for supplying a steel bar corresponding to the raw material for the production of the worm shaft, a steel bar loading a predetermined amount of steel bar having a length of about 3m It consists of a part 101 and a steel bar injecting part 104 for feeding one steel bar passed from the steel bar loading part 101 into the front saw station 200.

The steel bar stacking unit 101 operates at least two rotary shafts 109 installed along the X-axis direction parallel to the steel bar traveling direction on the unit frame 108 and a motor 110 for operating the rotary shafts 109. It includes, the rotary shaft 109 is provided with a plurality of steel bar pusher 111 disposed at a predetermined interval along the longitudinal direction of the axis.

In the unit frame 108 of the steel bar stacking portion 101, a plurality of steel bars are placed side by side in contact with the width direction.

Accordingly, when the motor 110 is operated, the one that is closest to the steel bar inlet 104, the frontmost by the steel bar pusher 111 that rotates with the rotating shaft 109 is operating. The steel bar can be passed to the steel bar input 104.

The steel bar inserting unit 104 is a means for conveying a steel bar passed to the steel bar stacking unit 101 in the longitudinal direction and sending it to the saw station 200. Placed side by side.

A plurality of rollers 102 for guiding the progress of the steel bar is disposed in the steel bar inlet 104, wherein the rollers 102 are freely rotatable in combination of three in a bundle, each of which is a steel bar. It is installed side by side along the progress line to guide the progress of the steel bar.

In addition, the steel bar inlet 104 is provided with a feeder 103 as a means for substantially pulling the steel bar to send to the saw station 200.

The feeder 103 is a means for pulling the steel bar by the friction force through the belt drive, the feeder block 106 and the feeder cylinder 107 for pressing the feeder belt 105 and the steel bar in friction contact with the steel bar toward the feeder belt 105 side. It consists of

Here, the feeder belt 105 may apply a method of operating the belt by hooking the belt between two rollers and driving the roller with a motor (not shown).

The feeder 103 initially serves to inject the steel bar toward the saw station 200 only by a predetermined distance, and thereafter, the pitch feed unit 210 in the saw station 200 to be described later transfers the steel bar by a predetermined pitch. I can make it happen.

To this end, the feeder belt 105 and the feeder block 106 may be disposed to face each other with the steel bar in the center to selectively contact the steel bar to advance the steel bar to one side.

For example, when the feeder cylinder 107 is operated while the steel bar is positioned between the feeder belt 105 and the feeder block 106, the steel bar is pushed by the feeder block 106 to feed the feeder belt 105. When the feeder belt 105 is in close contact with the side and at the same time, the steel bar is advanced in the longitudinal direction by the frictional contact force with the belt is sent to the saw station 200.

As described above, the steel bar loading unit 101 passes the steel bar in front of the loaded steel bars one by one to the steel bar inlet 104, and the steel bar inlet 104 guides the roller 102. By using the pull of the feeder 103, it is possible to advance one steel bar to the saw station 200.

Figure 3 is a plan view showing a saw station in the worm shaft shape processing apparatus according to an embodiment of the present invention.

As shown in FIG. 3, the saw station 200 is a means for cutting a steel bar having a length of about 3 m into a single steel bar having a predetermined length, for example, 120 to 150 cm, and moving in the Y-axis direction. The saw machine 203, a jig block 205 for holding the steel bar during the cutting operation, and a pitch feed unit 210 for moving the steel bar to the cutting area by one pitch (120 ~ 150cm) and the like.

The saw machine 203 is installed on one side of the steel running line and installed in a structure movable in the width direction of the device by a driving means (not shown) such as linear motion, the saw motor is installed on the machine plate 211 201 and a reducer 212, wherein the cutter wheel 202 is coupled to the shaft of the reducer 212.

In addition, the shaft of the saw motor 201 and the shaft of the reducer 212 are connected to the belt transmission device 213, so that the steel bar can be cut by the cutter wheel 202 that is rotated by the saw motor 201. .

Accordingly, the saw machine 203 moves in the width direction of the apparatus, advances the cutter wheel 202 in the steel bar progress line to cut the steel bar with the rotating cutter wheel 202, and after cutting the steel bar It is possible to return to the original position again.

The jig block 205 is installed on the opposite side of the saw machine 203 with the steel bar advancing line interposed therebetween, while holding the steel bar at the time of cutting operation, the cutter wheel 202 is accepted.

To this end, a jig block 205 in which a wheel groove 204 for entering the cutter wheel 202 is formed is provided, and the jig block 205 supports the steel bar against the cutter wheel 202. It will play a role.

That is, the steel bar is seated in the guide rail 220 installed side by side along the steel bar progress line at the entry side of the saw station 200 and at the same time by the jig block 205 (the side where the cutter wheel enters) The other side) is supported and can be cut by the cutter wheel 202 in this state.

Then, one side of the jig block 205 is provided with a guide block 214 for guiding the traveling path of the cut unit steel bar, the guide block 214 is supported by the bracket 215 while being unit steel The hole 216 coaxial with the progress line of the bar accurately guides the progress of the unit steel bar.

In particular, the saw station 200 includes a pitch transfer unit 210 for advancing the steel bar into the cutting work area by one pitch.

To this end, a clamping block 206 is provided to hold and move the steel bar while reciprocating along the moving direction of the steel bar on one side of the jig block 205 and then to release the steel bar.

The clamping block 206 includes a fixed block 206b installed on the block main body 206a and a movable block 206d moved by the cylinder 206c, and the movable block 206d by the operation of the cylinder 206c. ) Moves in the Y-axis direction so that the steel bar therebetween can be clamped together with the fixing block 206b.

A screw bar 208 is provided on both sides of the block body 217 and is arranged side by side with the steel bar traveling line for the operation of the clamping block 206, and the clamping block in the screw bar 208 at this time The slider 218 at the bottom of the block body 206a of 206 is screwed in.

At this time, one end of the screw bar 208 is connected to the screw motor 209 through the coupler can be rotated.

In addition, two guide bars 219 parallel to both sides of the screw bar 208 are installed in a structure in which both ends are supported between the block bodies 217 on both sides thereof, and the guide bar 219 thus installed is provided with a clamping block ( The bearing bush 206e in the block body 206a of the 206 is connected through and guided.

Accordingly, when the screw motor 209 is operated with the steel bar clamped by the movable block 206d and the fixed block 206b by the cylinder 206c in the clamping block 206, the clamping block 206 ) The whole holds the steel bar and moves in the X-axis direction, whereby the steel bar moves one pitch to be positioned in the cutting area, and then the saw machine 203 moves in the Y-axis direction to the cutter wheel 202. By cutting the steel bar, the steel bar can be cut to a predetermined length.

Here, when the steel bar advances one pitch by the clamping block 206, the pre-cut unit steel bar is naturally moved forward along the guide block 214 while being pushed by the steel bar which is continuously pitched one pitch. It can be sent to the transport conveyor 300 side.

Then, the clamping block 206 having moved the steel bar by one pitch is returned to the initial position by the reverse operation of the screw motor 209 in the unclamping state of the movable block 206d and the fixed block 206b.

4 is a plan view showing a chamfer station, a drilling station and a groove station in a worm shaft shape processing apparatus according to an embodiment of the present invention,

5 and 6 are side views showing a chamfer station, a drilling station and a groove station in a worm shaft shape processing apparatus according to an embodiment of the present invention.

As shown in FIGS. 4 to 6, the chamfer station 500, the drilling station 600, and the groove station 700 each perform chamfering, drilling, and groove processing on a unit steel bar cut to an appropriate length. As a means for doing this, the machining operation is sequentially performed while being arranged in order from one side of the progress line of the unit steel bar.

Here, the chamfer station 500, the drilling station 600 and the groove station 700 is different from the cutting tool 14 is mounted only for the corresponding machining, the basic structure or operation mechanisms are the same, and thus do not distinguish each The unity will be described as one.

In addition, the chamfering process performed by the chamfering station 500 refers to a cutting process of forming a chamfer and a reference groove of a center axis along an edge at an end of a unit steel bar, and a drilling process performed by the drilling station 600. Refers to a cutting process forming a groove of a predetermined depth along the end center axis of the unit steel bar, and the groove processing performed in the groove station 700 is a circumferential surface at a position slightly inward from the end of the unit steel bar. According to cutting means forming grooves.

At this time, the groove formed by the groove processing is utilized as an identification mark for distinguishing the front and rear when processing the worm gear teeth on the worm shaft.

The chamfer station 500, the drilling station 600 and the groove station 700 comprise a block assembly 10 as a means to serve as a support.

The block assembly 10 is a drive shaft 13 or the like is installed, it is made of a structure in which a plurality of blocks are laminated and combined, the reciprocating motion in the width direction of the device by screw transmission with a ball screw 16 to be described later It is installed to be possible.

That is, the block assembly 10 is supported by the LM guide 19 installed on the base plate 18 and at the same time the ball screw 16 side through the slider 25 embedded in the lowermost block. Installed in a screw coupled structure, the ball screw 16 is moved back and forth according to the movement.

In addition, the drive motor 11 is installed on the block assembly 10, the drive motor 11 at this time serves to provide power to the drive shaft 13 to be described later.

At this time, in the case of the drive motor 11, the chamfer station 500 and the drilling station 600 is installed using a fixed height support on the bottom block (block with a built-in slider) of the block assembly 10, In the groove station 700, it is installed on the uppermost block.

In addition, the block assembly 10 is provided with a drive shaft 13 for rotating the drive head 15 in which the cutting tool 14 is mounted, in which the drive shaft 13 passes through the block horizontally. It is installed in a rotatable structure by a plurality of bearings, and in this state, the rear end is connected to the driving motor 11 to receive power.

For example, the pulley 26 is mounted to the shaft of the drive motor 11 and the rear end of the drive shaft 13, respectively, and the belt 27 is connected between the upper and lower pulleys 26, and thus belt transmission is performed. The drive shaft 13 can rotate as power is transmitted in a manner.

Of course, in the case of the pulley 26 mounted on the drive motor 11, since the station is a dual type, it is made of a two-row pulley form that can simultaneously transmit power to the two drive shaft (13).

In addition, a driving head 15 is mounted at the distal end of the drive shaft 13 to be rotatable together, and a cutting tool 14 for processing a unit steel bar is coupled to the driving head 15 at this time.

Here, the cutting tool 14 can be used a tool suitable for chamfering, drilling, groove processing, such as a drill, a bite.

A ball screw 16 is provided as a means for moving the entire block assembly 10 including the cutting tool 14 in the width direction of the apparatus.

The ball screw 16 is a means of screwing together with the block assembly 10 for the device widthwise movement of the cutting tool 14, arranged on the base plate 18 side by side along the device width direction at the same time a plurality of bearings It is installed in a rotatable structure while being supported at both ends by a bearing housing 28 that accommodates the screw housing 28, and is screwably coupled to the slider 25 of the block assembly 10.

In addition, the back and forth motors 17 are arranged side by side behind the ball screw 16, and the shaft of the forward and backward motors 17 is connected to the rear end of the ball screw 16 through the coupler 29. .

At this time, the forward and backward motor 17 is installed in a structure supported on the motor block 30 is coupled to the bearing housing 28 side.

Accordingly, when the ball screw 16 is rotated by the operation of the forward and backward motor 17 while the unit steel bar is fixedly positioned on the steel bar feed and clamp unit 800, the cutting tool 14 includes a cutting tool 14. The entire block assembly 10 is advanced in the width direction of the device, and at the same time, the driving force of the driving motor 11 is transmitted to the driving shaft 13 by belt transmission, and the driving shaft 13 rotates. The machining of the unit steel bar is performed by the operation of the 15 and the cutting tool 14.

Of course, the operation of the forward and backward motor 17 and the drive motor 11 may be controlled in such a manner that they operate simultaneously without time difference.

In particular, in the case of the groove station 700, since the machining position is formed at a position more inward than the end of the unit steel bar, the groove station 700 includes a drive shaft 13 having a double shaft structure.

For example, a slide shaft 31 disposed along a central axis is installed in the drive shaft 13, and the front end portion of the slide shaft 31 is coupled to the drive head 15 side while the rear end portion is coupled to the drive shaft 15. It is supported by a structure supported by the bearing block 32.

The bearing block 32 is connected to a rod of an actuator 34 such as a cylinder at the rear end as well as by an auxiliary LM guide 33 on the block assembly 10.

Of course, the slide shaft 31 is coupled to move in the axial direction within the drive shaft 13, but is coupled to rotate integrally with the drive shaft (13).

Accordingly, when the entire block assembly 10 reaches the set position (for example, the position close to the end of the unit steel bar) by the operation of the forward and backward motor 17, the operation of the actuator 34 from this time on. As the slide shaft 31 moves forward, the cutting tool 14 at its tip is sent to the groove processing position, and groove processing can be performed at this position.

In addition, the chamfer station 500, the drilling station 600 and the groove station 700 is provided with a position alignment device 24 as a means for aligning the unit steel bar in place prior to processing the unit steel bar.

The position alignment device 24 serves to align the unit steel bars while making contact with the unit steel bars before processing the unit steel bars with the cutting tool 14.

To this end, an auxiliary block 21 is installed at the distal end of the block assembly 10, and a positioning cylinder 20 is vertically installed at the upper part of the auxiliary block 21.

And, on the auxiliary block 21, the positioning shaft 22 is horizontally installed in a rotatable structure while being supported by a bearing, and the front end of the positioning shaft 22 is 90 ° perpendicular to the shaft. Positioning bar 23 is formed.

In this case, although not specifically illustrated, the alignment cylinder 20 may transmit power to the rear end of the alignment shaft 22 in a rack / pinion manner or the like.

For example, a rack is mounted on the rod of the alignment cylinder 20, and a pinion engaged with the rack is mounted on the rear end of the alignment shaft 22, and the alignment shaft 22 is mounted by cylinder operation. It can be rotated.

At this time, the alignment bar 23 is blocking the front of the cutting tool 14 while taking a vertical posture before processing.

Accordingly, when the entire block assembly 10 is advanced, the alignment bar 23 positioned in front of the cutting tool 14 in the drive head 15 contacts the end of the unit steel bar first. Position the unit steel bar.

For example, when the unit steel bar is biased to either side, it can be pushed in place by the alignment bar 23.

Since the alignment bar 23 is simultaneously entered from both sides of the unit steel bar, the unit steel bar can be positioned at the correct position. In the case of the groove station 700, the unit steel bar is chamfered and drilled. Since the position is accurately positioned to some extent, even if the single position alignment device 24 is employed, there is no big problem in positioning the unit steel bar.

In this way, the position alignment bar 23 that has completed the position alignment with respect to the unit steel bar is deviated from the front of the cutting tool 14 while taking a horizontal posture while rotating 90 ° by the reverse operation of the position alignment cylinder 20. As a result, the cutting process by the cutting tool 14 can be performed soon.

On the other hand, the present invention provides the indicator station 900 as a means for checking the length of the unit steel bar after the drilling process.

The indicator station 900 may be made up of two sets located side by side between the drilling station 600 and the groove station 700 on one side of the path through which the unit steel bar travels.

That is, the two sets of indicator stations 900 can be installed facing each other with the unit steel bar progress line therebetween.

The indicator station 900 is composed of an indicator 902 and the inspection cylinder 901, the indicator 902 is composed of two installed side by side on the plate 903, the contact / non-contact with the unit steel bar Means for measuring the length of the unit steel bar, the inspection cylinder 901 is disposed behind the indicator 902, the plate 903 on which the indicator 902 is installed, the unit width bar, that is, It's a way to get you there.

Here, the indicator 903 may be applied to a conventional contact gauge, non-contact sensor and the like.

FIG. 7 is a side view illustrating a steel bar feed and clamp unit in a worm chart processing apparatus according to an embodiment of the present invention. FIG.

As shown in FIG. 7, the steel bar feed and clamp unit 800 is a means for transferring a unit steel bar to each processing area, and serves to fix the steel bar during processing in a state where the steel bar is located in each processing area. Will also do.

To this end, a chain conveyor 801 is provided which is installed on the conveyor frame 804 and installed side by side along the steel bar progress line while passing through each processing area for chamfering, drilling and groove processing.

The chain conveyor 801 is a conveyor driven by a step method, and moves unit steel bars one step at a time to the corresponding processing area, wherein the chain is provided with a plurality of guides installed up and down on the conveyor frame 804. It is possible to proceed while being guided by the roller 809.

In particular, a plurality of transfer blocks 802 are arranged on the chain conveyor 801 connected to the conveyor side by a chain adapter and arranged at a predetermined pitch interval, and a unit steel bar is placed on an upper end of the transfer block 802 installed in this way. The losing steel bar setting block 803 is installed.

Here, the steel bar setting block 803 is provided with a groove 810 of the upper open type so that the unit steel bar can be stably placed.

In addition, in the case of the transfer block 802, the unit steel bar is slightly buffered when the unit steel bar is pressed by the position fixing block 807, which will be described later.

To this end, the transfer block 802 supports two blocks which are combined in a structure capable of moving up and down with each other, that is, a movable type supporting a fixed fixed transfer block 802a and a steel bar setting block 803 fixed to the conveyor side. It consists of a transfer block 802b.

In addition, a guide bar 802c is coupled to the bottom of the movable transfer block 802b integrally coupled with the steel bar setting block 803, and the guide bar 802c is a fixed transfer block 802a. Vertically extending downward while penetrating through the bearings, seals, etc. built in the).

In addition, a spring 802d is interposed between the movable transfer block 802b and the fixed transfer block 802a, and the spring 802d supports the movable transfer block 802b while being elastically supported. It always exerts a force to push 802b upwards.

Accordingly, when the unit steel bar is pressed by the positioning block 807, the entire movable transfer block 802b including the steel bar setting block 803 compresses the spring 802d and guide bar ( It is possible to move slightly downward while being guided by 802c, so that the unit steel bar can be moved onto the steel bar support block 811 which will be described later.

In addition, the transfer block 802 is provided with a cover 802e as a means for preventing the intrusion of cutting oil, etc., the cover 802e and the movable transfer block 802b while taking a form overlapping each other; It is mounted to the fixed transfer block 802a, respectively.

As a means for fixing the unit steel bar during processing, a position fixing block 807 and a position fixing cylinder 806 for moving the unit steel bar are provided.

For example, in each machining area for chamfering, drilling and grooving, a cylinder plate 805 is provided on the conveyor frame 804 and upwardly, and the cylinder plate 805 is provided with a cylinder for fixing a position. 806 is installed vertically.

In addition, the positioning block 807 is coupled to the rod and guide bar 808 of the positioning cylinder 806 through its upper end, while moving up and down during cylinder operation, the steel bar through both edges of the lower end thereof. The unit steel bar placed in the setting block 803 is pressed from above.

At this time, on both sides of the steel bar setting block 803 is provided on the conveyor frame 804, the steel bar support block 811 is provided to substantially support both ends of the unit steel bar during processing, the actual unit steel bar is It can be machined while being fixed by being tightly clamped between the position fixing block 807 and the steel bar support block 811.

Of course, the steel bar support block 811 is also provided with a groove 810 for stable mounting of the unit steel bar.

8 is a plan view showing the overall process flow of the worm shaft shape processing apparatus according to an embodiment of the present invention.

As shown in FIG. 8, the steel bars 1 having a length of about 3 m loaded on the steel bar loading portion 101 of the steel bar supply unit 100 move one by one in the Y-axis direction so that the steel bar injection portion 104 is disposed. ), The steel bar 1 of the steel bar inlet 104 is moved along the X-axis direction and transported to the saw station 200 where it is cut into unit steel bars 2.

The cut unit steel bar 2 is transported in the longitudinal direction by the transfer conveyor 300, and then reversed by 90 ° by the transfer unit 400 at the end of the conveyor to take a widthwise position, and then the steel bar transfer and clamp unit. And moved to a steel bar setting block in chain conveyor 801 of 800.

The unit steel bar 2 thus moved is transported along the X axis in the chain conveyor 801 of the steel bar feed and clamp unit 800, and the machining is sequentially performed in a stopped state after entering each machining area. Will be done.

That is, the chamfer 3 is processed in the chamfer station 500, the drill groove 4 is processed in the drilling station 600, and the groove 5 is processed in the groove station 700.

In addition, the unit steel bar (2), which has been completed until the groove processing, is transferred to a subsequent process, so that the worm gear processing is made in earnest, so that one worm shaft is manufactured.

As described above, in the present invention, each station divided for chamfering, drilling and groove processing from a supply of a steel bar corresponding to a raw material through a sawing station cut to an appropriate length is constructed by a series of automated processes, Speed, accuracy and productivity can be improved, and the dual type, which simultaneously processes both ends of two-piece steel bars in three shape machining stations, can dramatically reduce the cycle time required for shape machining. There is an advantage to this.

10 block assembly 11 drive motor
12: transmission 13: drive shaft
14 cutting tool 15 drive head
16 ball screw 17 forward and backward motor
18: base plate 19: LM guide
20: cylinder for position alignment 21: auxiliary block
22: shaft for position alignment 23: bar for position alignment
24: position alignment device 25: slider
26 pulley 27 belt
28: bearing housing 29: coupler
30: motor block 31: slide shaft
32: bearing block 33: auxiliary LM guide
34: actuator
100: steel bar supply unit 101: steel bar loading unit
102: roller 103: feeder
104: steel bar inlet 105: feeder belt
106: feeder block 107: feeder cylinder
108: unit frame 109: rotating shaft
110: motor 109: steel bar pusher
200: saw station 201: saw motor
202: Cutter Wheel 203: Saw Machine
204: wheel groove 205: jig block
206: clamping block 207: clamping cylinder
208: screw bar 209: screw motor
210: pitch feed unit 211: machine plate
212: reducer 213: belt transmission device
214: guide block 215: bracket
216 hole 217 block
218: Slider 219: Guide Bar
220: guide rail
300: conveying conveyor
400: transfer unit
500: Chamfer Station
600: Drilling Station
700 groove groove
800: Steel Bar Feed and Clamp Unit
801: chain conveyor 802: transfer block
803 steel bar setting block 804 conveyor frame
805: cylinder plate 806: cylinder for fixing the position
807: clamping position 808: guide bar
809: guide roller 810: groove
811: Steel Bar Support Block
900: Indigate unit 901: Inspection cylinder
902 indicator 903 plate

Claims (12)

A steel bar supply unit 100 for supplying one steel bar in a bar length direction as a place where a predetermined amount of steel bars are loaded;
Saw station (200) for cutting the steel bar supplied from the steel bar supply unit 100 by a single unit steel bar using a cutter wheel;
Transfer unit 300 for transferring the unit steel bar cut in the saw station 200 and the transfer unit located at the rear end of the transfer conveyor 300 to move the unit steel bar in the longitudinal direction by 90 ° reversed in the transverse direction 400;
Chamfer station 500, drilling station 600 and groove station 700 which are sequentially arranged along the traveling direction of the unit steel bar as a means for performing chamfering, drilling and groove processing of the unit steel bar using cutting tools, respectively. );
In front of the chamfer station 500, the drilling station 600 and the groove station 700 are arranged side by side along the progress line of the unit steel bar to unit the steel bar to each processing area for chamfering, drilling and groove processing A steel bar conveying and clamping unit 800 for conveying;
Worm shaft shape processing apparatus, characterized in that comprising a.
The worm shaft shape machining according to claim 1, wherein the chamfer station 500 and the drilling station 600 are each formed of a dual type which simultaneously operates two pieces of cutting steel by operating two cutting tools. Device.
The method of claim 1, wherein the chamfer station 500 and the drilling station 600 is composed of two sets each disposed in a position facing each other with the steel bar feed and clamp unit 800 therebetween, both ends of the unit steel bar Worm shaft shape processing apparatus, characterized in that to be processed at the same time.
The steel bar supply unit 100 of claim 1, wherein the steel bar supply unit 100 includes a steel bar stacking unit 101 for placing a plurality of steel bars side by side while passing in a width direction with a plurality of steel bars having a predetermined length, and the steel bar stacking unit. Steel which is arranged side by side of the side 101 and one of the steel bars passed to the steel bar loading unit 101 in the longitudinal direction using a plurality of rollers 102 and the feeder 103 arranged in a line in the longitudinal direction Worm shaft shape processing apparatus comprising a bar injection portion (104).
The feeder belt 105 and the feeder block of claim 4, wherein the feeder 103 of the steel bar inserting part 104 is disposed to face each other with the steel bar in the center thereof to move the steel bar to one side while selectively contacting the steel bar. And a feeder cylinder (107) for advancing the feeder block (106) back and forth.
The saw machine (203) of claim 1, wherein the saw station (200) has a cutter wheel (202) rotated by a saw motor (201) and moves in the width direction of the apparatus and enters the steel bar progress line to cut the steel bar. And a jig block 205 disposed on the opposite side of the saw machine 203 and having a wheel groove 204 for entering the cutter wheel 202 and holding a steel bar during cutting. The worm shaft shape processing apparatus characterized by the above-mentioned.
7. The clamping block 206 and the clamping cylinder 207 of claim 1 or 6, wherein the saw station 200 is capable of reciprocating along a moving direction of the steel bar at one side of the jig block 205 and holding the steel bar. And a pitch transfer unit 210 composed of a screw bar 208 for moving the clamping block 206 and a screw motor 209 to move the steel bar by one pitch to the cutting work area. Worm shaft shape processing device. The method of claim 1, wherein the chamfer station 500, drilling station 600 and groove station 700 is a block assembly 10 that serves as a support and a drive motor 11 is installed in the block assembly 10 And a drive shaft 13 rotatably connected to the drive motor 11 side and the transmission device 12 while being installed in a structure in which the bearing assembly is horizontally supported on the block assembly 10, and the drive shaft. A drive head 15 coupled to the tip of 13 to machine the unit steel bar using the cutting tool 14, and screwed together with the block assembly 10 to move the cutting tool 14 in the device width direction. A ball screw 16 for moving the block assembly 10 and a forward and backward motor 17 connected to the rear end of the screw for rotation of the ball screw 16 and a base plate 18 are installed on the block assembly ( LM guide (19) to guide movement of 10) Worm shaft shape processing apparatus, characterized in that comprising a.
The chamfering station 500, the drilling station 600, and the groove station 700 of claim 1, wherein the aligning cylinder 20 and the auxiliary block 21 are installed at the distal end of the block assembly 10. The cutting tool in the drive head 15 while being vertically installed at the front end of the positioning shaft 22 and the positioning shaft 22 which is rotatable by the positioning cylinder 20 and horizontally installed on (14) further comprising a positioning device 24 which is positioned in front of the positioning bar 23 to hold the position of the unit steel bar and aligns the position of the unit steel bar before processing. Worm shaft shape processing apparatus.
The method of claim 1, wherein the steel bar feed and clamp unit 800 is a chain conveyor 801 is installed side by side along the steel bar running line while passing through each processing area for chamfering, drilling and groove processing, and A transfer block 802 installed at a constant pitch on the chain conveyor 801, a steel bar setting block 803 provided at an upper end of the transfer block 802 as a unit where the unit steel bar is placed, and the chamfering and drilling Position fixing cylinder 806 and the position fixing cylinder 806 installed on the upper cylinder plate 805 of the conveyor frame 804 as a means for fixing the steel bar located in each processing area for processing and groove processing Position fixing clamper 807 which is installed on the rod and presses the steel bar placed on the steel bar setting block The worm shaft shape processing device being configured to.
The transfer block 802 is composed of a lower fixed transfer block 802a fixed to a conveyor side and a movable transfer block 802b for supporting a steel bar setting block 803. The transfer block (802b) is a worm shaft shape processing apparatus, characterized in that supported by a structure that is vertically elastically movable by a guide bar (802c) and a spring (802d) vertically installed on the fixed transfer block (802a) side.
The indicator 902 of claim 1, wherein the indicator 902 is positioned side by side between the drilling station 600 and the groove station 700 and is movable to the steel bar running line side by the inspection cylinder 901 and the inspection cylinder 901. Worm shaft shape processing apparatus further comprises an indicator unit (900) configured to inspect the length of the unit steel bar.

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