KR20220096537A - Special steel face cutting system - Google Patents

Abstract

Disclosed is a special steel chamfering system capable of processing the surface of special steel using a cutter equipped with blades. The special steel chamfering system according to an embodiment of the present invention includes: a table unit configured to support a workpiece; a moving unit installed above the table unit and moving a rotary motor up and down; a rotary motor that is fixed to the moving unit, ascends and descends, and rotates the cutter; and a cutter connected to a rotary shaft of the rotary motor and having blades formed on a lower surface and an outer circumferential surface at regular intervals.

Description

Special steel face cutting system

The present invention relates to a special steel face-cutting system, and more particularly, to a special steel face-cutting system capable of machining the surface of a special steel using a cutter equipped with a rotating blade.

Steel is a kind of alloy of iron and carbon, and it refers to an alloy containing 0.035 wt% to 1.7 wt% of carbon in iron. When the carbon content is less than 0.035wt%, it is called soft iron, and when it exceeds 1.7wt%, it is called cast iron. Pure iron is weak in strength and hardness. In the case of iron-carbon alloys, when the carbon content is in the range of 0 to 1.7 wt%, the physical properties are significantly different by heat treatment, and among them, the metal alloy with the highest utility in terms of strength and toughness corresponds to steel.

In the case of these steels, as the carbon content increases, the strength increases during heat treatment, but the hardness becomes too high and can be easily broken. In the case of use, the content of 0.9~1wt% is used.

Since the past, steel has been useful in the manufacture of various weapons and tools. Therefore, since the Hittite civilization, which first produced steel, efforts to mass-produce steel have continued throughout human history. Mass production requires a large amount of resources, high technology, and huge capital. It is very difficult to properly equip these three elements, so there have always been restrictions on the production of steel. In fact, it takes a lot of effort to make a single steel sword in a conventional blacksmith. Even in modern times, steel mills are equipped with huge facilities by pouring huge amounts of money under the initiative of the state or large corporations. Therefore, modern steel is also a material that symbolizes industry. It also means that the system necessary for steel production is in place, and it means that various industries that require steel production are being actively carried out.

However, as technology continued to develop, the existing steel alone could not produce the desired properties, so the structural structure of steel was changed or special steel produced by mixing with various metals was developed, and the use of such special steel is continuously increasing.

Typical special steels include stainless steel manufactured by alloying with chromium, structural steel manufactured by alloying with carbon, silicon, and manganese, and tool steel manufactured by alloying with tungsten, chromium, nickel, etc. In the case of such special steel, it has higher physical properties compared to the existing steel, but as a reward for this, it has a disadvantage that it is difficult to process and cannot use the existing processing equipment.

Therefore, it is necessary to manufacture equipment for processing such special steel.

(0001) Republic of Korea Patent No. 10-1077234 (0002) Republic of Korea Patent No. 10-1662336

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a special steel chamfering system capable of machining the surface of special steel using a cutter equipped with a rotating blade.

Another object of the present invention is to provide a special steel face-cutting system capable of processing the surface of special steel with high efficiency, thereby maintaining high workability even during machining of special steel by optimizing the shape of the cutter blade.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A special steel chamfering system according to an embodiment of the present invention for solving the above problems includes a table unit configured to support a workpiece; a moving unit installed on the table unit and elevating the rotary motor; a rotary motor fixed to the moving nib to elevate and rotate the cutter; and a cutter connected to the rotation shaft of the rotation motor and having blades formed on the lower surface and the outer peripheral surface at regular intervals.

According to an embodiment of the present invention, by optimizing the shape of a cutter with a rotating blade, high efficiency can be exhibited even when machining a special phase, and accordingly, a special steel face-cutting system optimized for face-cutting of special steel can be provided.

In addition, as the surface of special steel is machined using a rotating cutter, it is possible to machine the surface of special steel at a faster speed than the existing machining method.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1 shows a photograph of a special steel chamfering system according to an embodiment of the present invention.
Figure 2 shows a photograph of a special steel chamfering system according to an embodiment of the present invention.
Figure 3 shows a photo of the cutter portion of the special steel face-type system according to an embodiment of the present invention.
Figure 4 is a photograph showing the operating state of the special steel chamfering system according to an embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the accompanying drawings are only provided to facilitate understanding of the various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various components, but these components are not limited by the above-mentioned terms. The above terminology is used only for the purpose of distinguishing one component from another component.

In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof. When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

Meanwhile, as used herein, a “module” or “unit” for a component performs at least one function or operation. And “module” or “unit” may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of “modules” or a plurality of “units” other than a “module” or “unit” to be performed in specific hardware or to be executed in at least one processor may be integrated into at least one module. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

A special steel chamfering system according to an embodiment of the present invention includes a table unit configured to support a workpiece; a moving unit installed on the table unit and elevating the rotary motor; a rotary motor fixed to the moving nib to elevate and rotate the cutter; and a cutter connected to the rotation shaft of the rotation motor and having blades formed on the lower surface and the outer peripheral surface at regular intervals.

The table unit is a part to which the special steel that needs to be processed is fixed, and while fixing the special steel, the special steel is moved to a desired position and processed. The table unit is configured to support a workpiece (special steel).

The table unit of the present invention can reduce the volume and load of the transfer device and reduce the manufacturing cost by performing all automatic transfer of the X, Y, and Z axes to the table with one motor.

The motor can move the table by transmitting the rotation of the motor to the variable speed gear body and the electronic clutch through the gear so that the power obtained is transmitted to the front and rear feeders, the up and down feeders, and the left and right feeders. .

The transfer device with each handle is fixed to the front of the table with the vertical milling head installed on the column.

On the back of the casing where the motor is installed, there are front and rear feed screws, upper and lower feed shafts, and a feed device that draws out the left and right feed shafts. Install the side handle and handle on the left and right transfer shafts, and install a number of shift levers on the lower side to change the rotational speed of the motor transmitted to the front and rear transfer screws, the upper and lower transfer shafts, and the left and right transfer shafts. can

A gear is fixed on the shaft of the motor fixed to the casing, and the gear on the electromagnetic clutch side fixed to the main shaft and the gear on the shift spline shaft are meshed on the upper and lower sides. The rotational power transmitted to the connecting gear through After transmission, it can be configured to rotate the connecting gear meshed with the electronic brake shaft gear of the front and rear transfer device.

As with the general structure, the front and rear feeders, the up/down feeders, and the left and right feeders are equipped with an engaging clutch on the handle and the manual shaft. After the transfer screw, the upper and lower transfer shafts and the left and right transfer shafts are connected to the rotary shaft with a gear, each rotary shaft is meshed and connected.

In the present invention configured as described above, the left, right, upper and lower feed devices, the variable speed gear body, and the main shaft are installed inside the casing, so that the table can be fed before and after cutting and up and down cutting feed and left and right cutting feed with a single motor. can be selectively performed, as well as forward and backward transfer of the table, upper and lower transfers, and left and right transfers can be easily performed.

When cutting the table, after adjusting the feed speed of the table suitable for cutting with the shift lever, press the buttons on the front, rear, left, right, up, load before and after cutting feed side of the control box to activate the front and rear feed devices. Power is applied to the electromagnetic brake to connect the electromagnetic brake, and at the same time as power is applied to the electromagnetic brake, the shaft of the motor rotates to rotate the gear on the electromagnetic clutch side meshed with the gear and the gear on the shift spline shaft. At this time, the rotational power transmitted to the gear by the electromagnetic clutch side is in a state where power is not applied to the electromagnetic clutch, so the power cannot be transmitted to the main shaft and idles. And after being shifted from the shift gear body composed of a spline shaft and transmitted to the gear of the electromagnetic brake, power is applied to rotate the connected electromagnetic brake, so the main shaft rotates and the front and rear gears of the electromagnetic brake of the transfer device through the connecting gear The gears of the front and rear feeder that rotate and rotate the upper and lower feeders and the gears of the left and right feeders, but only the electromagnetic brake with power applied rotates to rotate the rotary shaft of the front and rear feeders. The front and rear feed screws connected by gears to the rotating shaft rotate, so the table can be cut and fed before and after.

On the other hand, if you press the up/down feed or the left/right feed button in the control box, power is selectively applied to the electromagnetic brake of the up/down feed device or the electronic brake of the left/right feed device. It is possible to cut and feed the table with the lower feed shaft and the left and right feed shafts rotating up, down, or left and right.

In addition, if you press the front/rear rapid feed button on the control box to rapidly feed the table, power is applied to the electronic brake of the front/rear feed device, and at the same time, power is applied to the electronic clutch to connect the electronic clutch. Since the motor shaft rotates, the gear fixed to the motor shaft rotates the gear on the electromagnetic clutch side and the gear on the shift spline shaft.

At this time, the power transmitted to the shift spline shaft is transmitted to the gear of the electromagnetic brake through the shift gear body, but power is not applied to the electromagnetic brake of the main shaft, so the gear is idling. The power is applied to rotate the main shaft through the connected electronic clutch, and the high-speed rotational power transmitted to the main shaft without shifting is transmitted to the electronic brake gear of the front and rear transfer device through the connecting gear, and the high-speed rotation of the gear is By rotating the electromagnetic brake to which power is applied, the rotating shaft of the front and rear feeder rotates, and the front and rear feed screws are rotated through the meshed gear to make it possible to rapidly feed the table. Meanwhile, even during rapid traverse, by selectively pressing the upper and lower rapid traverse buttons and the left and right rapid traverse buttons of the control box, the table can be quickly traversed in the same manner as above.

That is, when the power of the motor is transmitted to the shaft and gear and then shifted from the shifting gear body through the gear and transmitted through the connecting gear, it is selectively controlled according to the power applied state of the electromagnetic brake, and the X, Y, and Z axes are manually transferred. This becomes possible, and power is transmitted directly by the electronic clutch through the gear, and high-speed rotation of the motor is supplied, so rapid traverse is automatically possible.

In the case of the electronic brake and the electromagnetic clutch as described above, they may be adjusted manually, but may also be adjusted automatically by a signal generated from the control box.

At this time, the control box can display the optimal feed rate and processing amount to the user based on the type of special steel input by the user. Or it can be increased or decreased appropriately to show the optimum working efficiency.

In the cutter according to an embodiment of the present invention, the cutter may be installed or separated from the arbor. The cutter has a center hole formed in the center and a first fastening hole is formed therein.

The arbor has an arbor tab formed at an end thereof, an arbor insert protruding from the center of the end portion, and an arbor flow path formed at the center of the arbor. The arbor insert is inserted into a center hole to be described later.

A main bolt to be described later is fastened to the above-described arbor tab through the first fastening hole. Accordingly, the cutter is fastened to the arbor.

On the other hand, a key block may be provided between the cutter and the arbor, thereby preventing the cutter and the arbor from rotating with each other.

Hereinafter, the configuration of the cutter will be described in more detail.

In the cutter, a cutting insert unit is installed on the outer periphery of the wheel body, and a cover is provided at the center of the wheel body.

The wheel body is formed with a first fastening hole and a tab. In more detail, a center hole is formed in the center of the wheel body, a center pocket is formed at an end of the center hole, and the above-described first fastening hole and tab are formed in the center pocket.

The cutting insert unit is one in which cutting is performed. The configuration of the cutting insert unit will be described later.

In the cover, a through hole is formed at a position corresponding to the first fastening hole, and a second fastening hole is formed at a position corresponding to the tab.

The sub bolt is a component for fixing the cover to the wheel body. That is, the sub bolt is fastened to the tab through the second fastening hole.

The main bolt is a component for fixing the wheel body to the arbor. That is, the main bolt passes through the through hole and is fastened to the arbor tab formed in the arbor through the first fastening hole.

Therefore, the cutter according to an embodiment of the present invention can be disassembled or assembled by loosening or tightening bolts when the cutter and the arbor are separated or assembled. This is compared to disassembling or assembling the cutter and the arbor after disassembling the cover element in the prior art, which reduces the number of work hours, which has the effect of reducing labor and increases the convenience of maintenance.

On the other hand, the size of the through hole may be provided to be large enough to pass the bolt head of the main bolt. Accordingly, when the main bolt is released from the arbor, the main bolt can be loosened more easily without being obstructed by the cover.

On the other hand, the cover may be arranged to be accommodated in the center pocket. As a result, the central part of the wheel body is assembled in a buried form without protruding convexly due to the cover.

Hereinafter, a flow path of the coolant in the milling cutter according to an embodiment of the present invention will be described.

The cutting insert unit will be described.

The cutting insert unit is provided with a cutting chip in the insert body. In addition, the cutting insert unit may be fixedly installed on the wheel body by the fixing unit, and the position of the cutting insert unit may be adjusted in the axial direction of the wheel body by the fine adjustment bolt.

The above-described fixing unit is screwed into the insert pocket. That is, the degree to which the cutting tip protrudes in the outer diameter direction is determined according to the location where the fixing unit is installed. In addition, the fixing unit is formed with a female screw, and a fastening bolt to be described later is fastened to the female screw of the fixing unit.

A fine adjustment bolt is screwed into one side of the insert pocket. The fine adjustment bolts may be disposed in a direction perpendicular to the fixing unit. In more detail, the fine adjustment bolts are installed in a direction parallel to the axial direction of the wheel body. That is, the degree to which the cutting tip protrudes in the axial direction is determined by adjusting the fine adjustment bolt.

In the cutting insert unit, an insert fastening hole is formed in an insert body, a fastening bolt is inserted into the insert fastening hole, and the fastening bolt is fastened to the above-described fixing unit to fix the insert body to the wheel body.

On the other hand, the head of the above-mentioned fine adjustment bolt is arranged to contact the side of the insert body, and when the fine adjustment bolt is adjusted in the loosening direction, the degree of protrusion of the cutting insert unit is adjusted while being slightly pushed in the axial direction of the wheel body. will become

In addition, a tip sheet is provided on the insert body, and the above-described cutting tip is disposed on the tip sheet.

In addition, a second passage hole is formed in the tip sheet of the insert body. The end of the second flow hole is formed in a direction toward the cutting tip, and the opposite side of the second flow hole is formed toward the above-described first flow hole.

The cover has a flange formed on the outer circumferential surface of the cover body. That is, when the cover is installed in the center pocket, a coolant reservoir is formed between the center pocket and the cover in a space equal to the thickness of the flange.

In addition, the cover has a groove formed on the bottom surface of the cover body. That is, when the cover is installed in the center pocket, the groove is used to move the coolant from the center hole to the coolant reservoir.

On the other hand, an insert pocket is formed on the outer peripheral surface of the wheel body, and a cutting insert unit is installed in the insert pocket.

In addition, the wheel body has a first flow path hole formed from the inner circumferential surface of the center pocket to the insert pocket.

An extended portion larger than the cross-section of the flow hole may be formed at an end of the flow hole on the insert pocket side.

Accordingly, even when the cutting insert unit is adjusted, the second flow path hole formed in the insert body and the extension communicate with each other, so that the coolant can be distributed well.

On the other hand, the extended part may be formed to be elongated in a direction parallel to the direction in which the insert body moves in the cutting insert unit. In more detail, when the cutting insert is worn, that is, when the cutting chips are worn, the fine adjustment bolt is adjusted to compensate the wear amount. The insert body moves in the direction parallel to the axial direction of the wheel body by adjusting the fine adjustment bolt will do Since the extended portion is formed to be elongated in a direction parallel to the direction in which the insert body is moved, even if the second passage hole moves, the second passage hole and the extended portion can communicate well.

Accordingly, the coolant is moved via the first passage hole, the expansion hole, and the second passage hole, so that it is possible to inject a high-pressure, large-capacity coolant to the part where the cutting process is performed. Furthermore, by providing a large-capacity coolant to the cutting part, the quality of the cutting process can be improved, and the lifespan of the cutter can be prevented from being shortened abnormally.

In addition, the cutter may be manufactured in a shape different from the above.

A cutter according to an embodiment of the present invention may include an arbor, a cutter, and a cover bolt.

The arbor forms an arbor insert and an arbor jaw at the end, and forms an arbor flow path in the inner center. In addition, the arbor forms an arbor female thread at the end of the arbor flow path. On the other hand, the arbor jaw may be provided with a key block.

The arbor is installed on the spindle of the machine tool, and may receive coolant from the spindle. The cutting oil is circulated through the arbor flow path.

The cutter forms a tool installation hole in the tool body to accommodate the arbor insert. And the cutter forms a pocket on the outside of the tool installation hole.

In addition, the cutter is provided with a cutting insert unit on the outer peripheral surface. And the cutter forms a tool flow path to connect the pocket and the cutting insert unit.

In the aforementioned cutting insert unit, the cutting insert is fastened to the tool body by the first bolt in the radial direction of the tool body. On the other hand, the second bolt is fastened to the tool body in the axial direction of the tool body, and the head of the second bolt is in contact with the cutting insert. That is, the position of the cutting insert may be finely adjusted according to the adjustment of the second bolt.

On the other hand, an insert flow path is formed in the cutting insert. The insert flow path may be connected to the tool flow path.

The cover bolt is provided with a bolt body to be seated on the arbor jaw, and a bolt shaft is formed at a lower side of the bolt body to be screwed with the female arbor screw.

In addition, the cover bolt forms a reservoir to accommodate the cutting oil on the outer circumferential surface of the bolt body, and forms a cover nozzle flow path so that the reservoir and the outside of the bolt body communicate.

A reservoir is formed on the outer circumferential surface of the bolt body, thereby forming a flange on the outside of the cover bolt. That is, the above-described cover nozzle passage is formed in the above-described flange.

Meanwhile, a driving groove may be formed in the center of the upper side of the cover bolt. The driving groove may be used when fastening the cover bolt to the arbor using a drive tool.

In addition, the cover bolt forms a central flow path inside the bolt shaft. In addition, the cover bolt may form a cross flow path such that the central flow path and the outer peripheral surface of the bolt shaft are connected.

On the other hand, the above-described cross flow path may be formed to be connected to the outer peripheral surface of the bolt body.

The cutter of the present invention configured as described above may provide cutting oil to the cutting insert and also to the front of the cutter.

If the movement path of the cutting oil is described in more detail, two paths are formed. The first path is connected to the arbor flow path, the cover bolt, the pocket of the cutter, the storage of the cover bolt, the tool flow path, and the insert flow path. As a result, the coolant flows along the first path to cool the cutting insert and the part where the cutting process is performed, and also helps to discharge the cutting chips.

The second path is connected to the arbor flow path, the cover bolt, the pocket of the cutter, the storage of the cover bolt, and the cover nozzle flow path. As a result, the coolant flows along the second path to assist in discharging the cutting chips introduced to the front of the cutter.

The cutter according to the embodiment of the present invention can cool the cutting insert and the part where the actual cutting is performed, and also, when the cutting chips are splashed into the inside of the cutter, in other words, toward the side where the cover bolt is located, the cutting chips can be removed.

Accordingly, the cutter according to the embodiment of the present invention can further improve the quality of milling, and can also prevent the lifespan of the cutting insert from being abnormally shortened.

It is also possible to change the number of cutting insert units and the number of cover nozzle passages in the embodiment of the cutter.

More specifically, in the embodiment of the cutter, the number of cutting insert units may be 14, and the number of cover nozzle passages may be four.

On the other hand, in the embodiment of the other cutter, 6 cutting insert units and 8 cover nozzle passages are disclosed.

That is, in the cutter according to the embodiment of the present invention, the number of cover nozzle passages may be limited in inverse proportion to the number of cutting insert units. Accordingly, assuming that the flow rate of the cutting oil introduced into the arbor is constant, the flow rate of the cutting oil provided to the cutting insert unit may be constantly maintained at the set flow rate.

Therefore, the cutter according to the embodiment of the present invention can prevent the flow rate of the coolant to be provided to the cutting insert unit from being excessively reduced. [

Accordingly, the flow rate of the cutting oil flowing into the tool passage maintains the set flow rate.

In addition, the cutter has a tool installation hole formed in the tool body to accommodate the arbor insertion portion, a pocket is formed outside the tool installation hole, and a cutting insert unit is provided on an outer circumferential surface of the cutter.

Then, the cutter forms a tool flow path to connect the pocket and the cutting insert unit, and forms a tool nozzle flow path to connect the pocket and the front of the tool body.

Cutting oil may be injected through the tool nozzle passage described above. If the movement path of the cutting oil is described in more detail, two paths including the first path and the third path may be formed. Since the first path is the same as the first path described in Embodiment 1, a redundant description will be omitted.

The third path is connected to the arbor flow path, the cover bolt, the pocket of the cutter, the storage of the cover bolt, and the tool nozzle flow path. As a result, the coolant flows along the third path to assist in discharging the cutting chips introduced to the front of the cutter.

Accordingly, it is possible to cool the cutting insert and the portion where the actual cutting is performed, and, in other words, to remove the cutting chips when they bounce off the inside of the cutter, in other words, to the side where the cover bolt is located.

Accordingly, the cutter according to the embodiment of the present invention can further improve the quality of milling, and can also prevent the lifespan of the cutting insert from being abnormally shortened.

Also, in the embodiment of the cutter, 14 cutting insert units and 3 tool nozzle passages may be initiated. On the other hand, in another cutter embodiment, the number of cutting insert units is 6 and the number of tool nozzles is 8.

That is, in the cutter according to the embodiment of the present invention, the number of tool nozzle passages may be limited in inverse proportion to the number of cutting insert units. Accordingly, assuming that the flow rate of the cutting oil introduced into the arbor is constant, the flow rate of the cutting oil provided to the cutting insert unit may be constantly maintained at the set flow rate.

Therefore, the cutter according to the embodiment of the present invention can prevent the flow rate of the cutting oil to be provided to the cutting insert unit from being excessively reduced, and the flow rate of the cutting oil flowing into the tool flow path can be maintained at a set flow rate.

In addition, the cutter may include an arbor and a cover bolt.

A tool nozzle flow path may be formed in the cutter, and a cover nozzle flow path may be formed in the cover bolt.

In particular, the number of the tool passages may be limited by summing the number of the tool nozzle passages and the number of the cover nozzle passages, and inversely proportional to the summed number.

Meanwhile, since the arbor is the same as the arbor, a redundant description will be omitted. Similarly, the configuration of the cutter is the same as that of the above embodiment, and the cover bolts are also the same, so a duplicate description will be omitted.

That is, the cutter of the present invention may include both the tool nozzle and the cover nozzle passage.

Accordingly, the cutting oil can be sprayed on the inside of the front of the cutter, and in particular, even if any one of the numerous nozzle flow paths is blocked, the cutting oil can be sprayed from the other nozzle flow path, so that the removal of cutting chips can be advantageous.

Also, in the cutter according to an embodiment of the present invention, the flow rate of the cutting oil flowing into the tool passage may be maintained at a set flow rate.

In addition, in the cutter according to an embodiment of the present invention, the cover bolt may have an outer diameter of the bolt body smaller than an inner diameter of the pocket and larger than an inner diameter of the tool installation hole.

Accordingly, when the cover bolt is fastened to the arbor, the cutting tool can be closely adhered by the cover bolt.

On the other hand, a key pocket is formed in the cutting tool. A key block provided in the arbor is inserted into the key pocket. In this way, the rotational force of the arbor can be transmitted clearly to the cutting tool.

In addition, in the cover bolt of the cutter according to an embodiment of the present invention, a branch flow path may be formed in the bolt body.

The branch flow path installs the cover bolt on the arbor so that when the bolt body is in close contact with the bottom of the pocket, the tool installation hole and the pocket are connected.

That is, the cutting oil may be moved through the branch flow path when moving from the pocket to the reservoir.

In addition, in the cutter according to an embodiment of the present invention, a flow path groove may be formed at the bottom of the pocket.

The flow path groove installs the cover bolt on the arbor so that the tool installation hole and the pocket are connected when the bolt body is in close contact with the bottom of the pocket.

That is, the coolant may move through the flow path groove when moving from the pocket to the reservoir.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications are possible by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

Claims (1)

a table unit configured to support a workpiece;
a moving unit installed on the table unit and elevating the rotary motor;
a rotary motor fixed to the moving nib to elevate and rotate the cutter; and
a cutter connected to the rotation shaft of the rotation motor and having blades formed on a lower surface and an outer peripheral surface at regular intervals;
Special steel chamfering system including

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