JP2007021698A - Cutting chip removing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting chip removing apparatus capable of removing cutting chips and burrs of a workpiece. <P>SOLUTION: The cutting chip removing apparatus 1 removes cutting chips Wd remaining in a hole Wa formed to the workpiece W. The device 1 is provided with: a cylinder 6 to which a fluid is supplied from a fluid supply source C; a piston 7 reciprocally movably arranged in the cylinder 6 and moved by the fluid; a linear member 4 whose base end part is fixed to the piston 7 and whose tip part is inserted into the hole Wa of the workpiece W; a tubular member 5 having a flow path 5a for allowing the jetting fluid to flow while the linear member 4 is loosely inserted into it, an inflow port 5b provided at the base end part thereof, from which the jetting fluid is taken in, and a jet port 5c provided at the tip part thereof, from which the jetting fluid is jetted out and into which the linear member 4 is penetrated so as to be capable of freely advancing or retreating; and a fluid supply means for supplying a jetting fluid to an inflow port 5b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chip removing device that removes chips such as burrs and chips formed during processing of a hole drilled in a workpiece.

  Conventionally, when holes have been drilled in a workpiece by cutting or laser processing, burrs such as cutting burrs and molding burrs that consist of extra fine protrusions in the holes, and chips that fall into the holes during processing Remains in the hole.

  As a device for removing burrs from the hole in the workpiece, the burrs in the curved tube can be removed by rotating a plurality of metal flexible shafts provided at the tip of the rotary drive device in the hole of the workpiece consisting of a curved tube. A deburring tool to be removed is known (for example, see Patent Document 1).

  In addition, as a device for removing burrs in the hole of the workpiece, a metal wire provided at the tip of the rotation base of the rotation drive device is inserted into the hole of the pipe-shaped workpiece and rotated, so that at the time of laser processing A deburring tool that removes the formed burrs is also known (see, for example, Patent Document 2).

In addition, a wire that makes it easier for chips to catch on the piston in the cylinder is moved, the wire is moved by the piston, air is blown out from the nozzle nozzle, and the chips are pushed out of the hole in the workpiece, and the chips are sucked in. A deburring device that sucks and collects by a machine is also known (see, for example, Patent Document 3).
Japanese Patent Laid-Open No. 10-202427 (Claims, FIG. 1) JP 2001-9584 A (paragraphs 0013 to 0016, FIGS. 2 to 4) JP-A-9-57568 (paragraphs 0016 to 0017, FIGS. 1 to 4)

However, the deburring tools such as Patent Document 1 and Patent Document 2 are made of a metal flexible shaft or metal wire inserted into a pipe, and are provided so as to spread a plurality of shafts or wires outward. Yes. For this reason, the deburring tools of Patent Documents 1 and 2 can be inserted when the hole to be deburred has a large inner diameter, but the deburring tool must be inserted when the hole has a small diameter. There was a problem that it could not be used.
Furthermore, the deburring tools of Patent Documents 1 and 2 are dedicated to deburring formed on the inner surface of the hole, and it is impossible to remove the so-called burrs formed at the end of the hole. There is a problem that the chips that fall on the surface cannot be removed.

Moreover, in the chip removal apparatus of patent document 3, while extruding a chip with a wire, it disperses a chip from the inside of a workpiece | work by scattering a chip with the air blown from the nozzle nozzle, and collect | recovering with a suction machine. However, there is a problem that burrs in the hole of the work cannot be removed.
Furthermore, the chip removal device of Patent Document 3 has a problem that the removal effect is lost because the chip attached to the workpiece cannot be dropped when the wire is damaged. Moreover, in the apparatus, since the wire is led to the outside from the side surface of the tip of the nozzle, the direction in which the tip of the wire moves cannot be regulated, and it is difficult to guide the wire to the place where there is chips to be removed. There was a problem that there was.

In the apparatuses of Patent Documents 1 to 3, since both the chips and burrs cannot be removed by one operation, there is a problem that the work efficiency is poor.
Furthermore, since the position of the tip of the moving wire cannot be grasped, there is a problem that chips cannot be removed with high precision when automated.

  Then, this invention is made | formed in order to solve the problem of the said prior art, and the subject of this invention is providing the chip removal apparatus which can remove the chip and burr | flash of a workpiece | work. is there.

In order to solve the above-mentioned problem, the chip removing device according to claim 1 is a chip removing device for removing chips remaining in a hole formed in a workpiece, and a cylinder to which a fluid is supplied from a fluid supply source. A piston that is reciprocally disposed in the cylinder and moves by the fluid, a linear member whose base end is fixed to the piston, and whose distal end is inserted into the hole of the workpiece, and the linear A member having a flow path through which a jetting fluid flows, a base end having an inflow port for taking in the jetting fluid, the jetting fluid being jetted at a distal end, and the linear member And a fluid supply means for supplying the ejection fluid to the inflow port.
Here, the chips refer to both burrs formed in the holes and chips remaining in the holes when the holes are formed by cutting, grinding, laser processing, or the like.

  According to the first aspect of the present invention, in the chip removal device, when fluid is supplied from the fluid supply source to the cylinder, the piston in the cylinder moves by the fluid, and the linear member fixed to the piston. The tip of the is advanced into the hole of the workpiece. In the tubular member into which the linear member is loosely inserted, the ejection fluid from the fluid supply means is fed into the flow path from the inflow port, and the ejection fluid is ejected from the ejection port at the tip. Then, the linear member protruding from the ejection port enters the workpiece hole while vibrating by the ejection fluid, so that the burr on the inner wall of the hole is struck down and separated. Chips and foreign matters remaining inside can be pushed out to remove chips (burrs and chips).

  The chip removal device according to claim 2 is the chip removal device according to claim 1, wherein the fluid supply means includes a chamber into which the ejection fluid is fed from the fluid supply source, and the inlet is , And connected to the chamber.

  According to the second aspect of the present invention, the inflow port communicating with the flow path of the tubular member is connected to the chamber into which the ejection fluid is fed from the fluid supply source, so that the linear member is inserted. A jetting fluid is fed into the tubular member. The linear member is loosely inserted into the tubular member, and vibrates by the jetting fluid flowing through the flow path because there is a space that forms the flow path in the tube with the inner wall of the tubular member. As a result, the linear member that has entered the hole of the workpiece vibrates, so that burrs and chips on the inner wall of the hole can be beaten and removed.

  The chip removal device according to claim 3 is the chip removal device according to claim 1 or 2, wherein the chip is inserted into the hole at a tip portion of the linear member to remove the chip. A removal member is provided, and the chip removal member is characterized in that a distal end portion and a proximal end portion are formed in a tapered shape, and a groove portion formed in an axial direction is formed on an outer peripheral surface.

  According to the third aspect of the present invention, the chip removing member provided at the distal end portion of the linear member is formed at the open end of the hole of the workpiece by forming the distal end portion and the proximal end portion in a tapered shape. The formed burr can be cut off at the tapered portion. Further, the chip removing member has a groove portion formed in the axial direction on the outer peripheral surface, whereby an edge portion protruding in the outer peripheral direction from the bottom surface portion of the groove is formed at both side opening ends of the groove portion. For this reason, the both side opening ends (edge portions) of the groove become cutting edges for cutting burrs and can efficiently remove chips.

  The chip removal device according to claim 4 is the chip removal device according to any one of claims 1 to 3, further comprising a rotating body that reciprocates integrally with the piston. And

  According to the fourth aspect of the present invention, when the piston is reciprocated by the cylinder, the piston is further rotated around the axis of the piston by the rotating body. For this reason, the piston and the rotating body rotate around the axis while reciprocating in the axial direction. As a result, the linear member and the chip removing member fixed to the piston can rotate about the axis while reciprocating in the hole of the workpiece, thereby effectively removing chips.

  The chip removing device according to claim 5 is the chip removing device according to claim 4, wherein the rotating body is inserted while being engaged, and the rotating body is moved to the piston according to the reciprocating movement of the rotating body. And a cylindrical body that is rotated about the axis.

  According to the invention described in claim 5, when the rotating body integral with the piston is reciprocated in the axial direction by the cylinder, the rotating body is rotated around the axis of the piston by the cylindrical body in accordance with the reciprocating movement of the rotating body. Be made. For this reason, the piston and the rotating body rotate around the axis while reciprocating. As a result, the linear member and the chip removing member fixed to the piston can rotate about the axis while reciprocating in the hole of the workpiece, thereby effectively removing chips.

  The chip removal device according to claim 6 is the chip removal device according to claim 5, wherein a spiral guide groove is provided on one of the outer peripheral surface of the rotating body and the inner peripheral surface of the cylindrical body. A support groove and a spherical body that is disposed in the support groove and engages with the guide groove are provided on the other of the outer peripheral surface of the rotating body and the inner peripheral surface of the cylindrical body. It is characterized by that.

  According to the sixth aspect of the present invention, a spiral guide groove is formed on one of the outer peripheral surface of the rotating body and the inner peripheral surface of the cylindrical body, and the outer peripheral surface of the rotating body and the cylindrical body are formed. A support groove with which the spherical body is engaged is provided on one of the other inner peripheral surfaces. Thus, when the piston reciprocates, the rotating body is guided by the spiral guide groove and rotates along the guide groove. As a result, the chip removing member and the linear member also reciprocate while spirally rotating together with the piston and the rotating body, and the efficiency of chip removal is improved.

  According to the chip removing device according to the present invention, it is possible to reliably and effectively remove chips and burrs in the hole of the workpiece and at the opening end.

  Next, with reference to FIGS. 1-4, the chip removal apparatus which concerns on embodiment of this invention is demonstrated. Drawing 1 is an important section expanded sectional view showing an example when removing chips with the chip removal device concerning the embodiment of the present invention.

≪Work structure≫
First, the workpiece W will be described with reference to FIG.
The workpiece W is a member having a hole Wa formed by cutting, laser processing, or the like. For example, the workpiece W is a cylinder block of an automobile, and is made of a metal such as cast iron or aluminum alloy.
In addition, the workpiece | work W should just have the burr | flash Bb or the chip Wc in the hole Wa, and a use use, a shape, etc. are not specifically limited. Hereinafter, an embodiment of the present invention will be described by taking as an example a hole Wa formed of a spool hole communicating with a bearing portion We of a crankshaft that is rotatably provided in a cylinder block for an automobile. Further, when both the burr Wb and the chip Wc are collectively referred to, it is referred to as chips Wd.

The hole Wa of the workpiece W includes, for example, a plurality of through holes having a relatively small diameter to which oil is supplied, the bearing portion We having a semicircular cross section is formed at one end, and the hole Wa is formed at the other end. A horizontal hole Wf (see FIG. 2) formed in a direction perpendicular to the hole is formed. In the hole Wa, burrs Wb generated when the workpiece W is cut and drilled and the chips Wc remain. When removing the chips Wd in the hole Wa, as shown in FIG. 1, a chip removing member 3 described later is inserted from the bearing portion We side of the hole Wa toward the side hole Wf side, and from the tubular member 5. When the ejected fluid is sent into the hole Wa, the chips Wd are dropped into the horizontal hole Wf and collected by the suction device 2 (see FIG. 3).
The inner diameters of the bearing portion We and the lateral hole Wf are larger than the inner diameter of the hole Wa. The work W only needs to have a hole Wa, and the bearing portion We and the lateral hole Wf may be the front and back surfaces of the work W communicating with the hole Wa.

≪Configuration of chip removal device≫
FIG. 2 is a schematic plan view showing the chip removing device according to the embodiment of the present invention.
As shown in FIG. 2, the chip removing device 1 includes, for example, burrs Wb (see FIG. 1) in the holes Wa, Wa... Formed in the workpiece W and chips remaining on the inner walls of the holes Wa, Wa. It is a device that automatically removes Wc at a time. The chip removing device 1 includes, for example, a number of apparatus main bodies 1A, 1B, 1C, 1D, and 1E corresponding to the number of holes Wa formed in the workpiece W, arranged in a row on the base 1a. Is a device that performs the removal work of the chips Wd (see FIG. 1) at the same time and all at once. That is, the chip removing device 1 is reciprocally moved in a spiral manner while rotating by rotating the rotating body 14 around the axis in accordance with the reciprocating movement of a piston 7 provided in a cylinder 6 described later. Chip Wd (FIG. 1) in each hole Wa of the workpiece W by the linear member 4 and the chip removing member 3 for excising Wb, and the jetting fluid ejected from the tubular member 5 and blowing away the chips Wc. Device) to remove at a time.

  As shown in FIG. 2, in the apparatus main bodies 1 </ b> A to 1 </ b> E, the tubular member 5 that is inserted in the linear member 4 and protrudes in the same direction is disposed on the front side on the table 1 b. It is supported by the relay part 1c, and is guided to be inserted into each hole Wa after being converged to one by the guide member 1d.

The table 1b is horizontally arranged at the end of the base 1a on the workpiece W side.
A support member 1e for inserting a plurality of flexible tubular members 5 and supporting them at a relatively narrow predetermined interval is attached to the relay portion 1c. The relay portion 1c is arranged on the table 1b nearer to the apparatus main bodies 1A to 1E, facing the apparatus main bodies 1A to 1E.
The guide member 1d is a member that supports the intermediate portion of the tubular member 5 so as to be bundled together, and supports the distal end of each tubular member 5 so as to advance and retreat toward the predetermined hole Wa. The guide member 1d and the table 1b are automatically moved from a predetermined position to a set position of the open end of the hole Wa of the workpiece W by a robot (not shown).
The guide member 1d is provided with a chip removal member detection sensor (not shown) that detects that the chip removal member 3 is at the retracted end.

  As described above, the chip removing device 1 includes a plurality of apparatus main bodies 1A to 1E that perform the same operation in accordance with the hole Wa of the work W for removing the chips Wd. In addition, when the hole Wa is one, the chip removal apparatus 1 operates only one apparatus main body to remove the chips Wd in one hole Wa, or is an apparatus provided with only one apparatus main body. Then, the chips Wd may be removed.

  Next, the configuration of the chip removing device 1 will be described in more detail with reference to FIG. FIG. 3 is a schematic enlarged cross-sectional view showing the chip removing device according to the embodiment of the present invention.

  As shown in FIG. 3, the chip removal device 1 includes a cylinder 6 to which a fluid is supplied from a fluid supply source C, a piston 7 that is reciprocally moved in the cylinder 6 and moves by the fluid, and the linear member. 4, the tubular member 5, and a fluid supply means 8 for supplying a jetting fluid to the inflow port 5 b. In addition, in this chip removing device 1, a rotating body 14 that reciprocates integrally with the piston 7 and the rotating body 14 are inserted while being engaged, and the rotating body 14 is moved to the piston 7 in accordance with the reciprocating movement of the rotating body 14. And a cylindrical body 13 that rotates around the axis of the cylinder.

≪Configuration of fluid supply source≫
The fluid supply source C includes, for example, an air compressor that generates a fluid (compressed air) that is a pressure medium, and is tubular through a fluid (compressed air) for operating the piston 7 in the cylinder 6 and the chamber 9. This is for sending a jetting fluid (compressed air) into the member 5. The fluid supply source C is connected to joint members J1 and J2 provided on the cylinder 6 via pipes Ca and Cb and control valves V1 and V2, respectively, and is connected to one chamber (not shown) and the other chamber 6a. The piston 7 is reciprocated by jetting and sucking compressed air.
Further, the fluid supply source C is connected to a joint member J3 provided in the chamber 9 adjacent to the cylinder 6 through the pipe Cc and the control valve V3, and the fluid for injection (compressed air) is supplied into the chamber 9. The jetting fluid (compressed air) is sent to the flow path 5a in the tubular member 5 by jetting. The fluid supply source C is electrically connected to the control unit 10.

As shown in FIG. 3, the control valves V <b> 1, V <b> 2, V <b> 3 are electromagnetic valves that automatically open and close the valve body by an electrical signal from the control unit 10, and are electrically connected to the control unit 10.
The control valve V1 sends compressed air into the one chamber (not shown) formed between the partition wall 11 on the rotating body 14 side and the piston 7 so that the piston 7 is on the linear member 4 side (arrow D). It is a valve that is controlled to move to the direction side.
The control valve V2 is a valve that controls the piston 7 to move toward the rotating body 14 by feeding compressed air into the other chamber 6a formed between the partition wall 12 on the chamber 9 side and the piston 7. is there.
The control valve V3 is a valve that controls the ejection fluid to be fed into the flow path 5a in the tubular member 5 through the chamber 9 and the chips Wc in the holes Wa are pushed out by the ejection fluid.

  The joint members J1, J2, and J3 are for connecting the pipes Ca, Cb, and Cc to the cylinder 6 or the chamber 9, and have a function of mechanically adjusting the flow rate of the fluid. The joint member J1 is installed on the outer wall of the cylinder 6 adjacent to the partition wall 11. The joint member J <b> 2 is installed on the outer wall of the cylinder 6 adjacent to the partition wall 12. The joint member J1 is installed on the outer peripheral wall of the chamber 9.

≪Cylinder configuration≫
As shown in FIG. 3, the cylinder 6 is composed of a cylindrical cylindrical body that is closed by fixing a partition wall 11 and a partition wall 12 in both end portions in the axial direction, and a magnet provided on the outer peripheral surface of the piston 7. An operating end detecting portion Sa and a backward end detecting portion Sb of the sensor S for detecting the magnetism of M are installed on the outer peripheral surface. A cylindrical body 13 is connected to the end face of the cylinder 6 in the axial direction adjacent to the base end side (arrow E direction side) by bolting, and adjacent to the distal end side (arrow D direction side). The chamber 9 is continuously connected by bolting. The cylinder 6 is made of a nonmagnetic material such as an aluminum alloy, for example. The length of the cylinder 6 in the axial direction is formed such that the stroke of the piston 7 provided therein coincides with the stroke of the chip removing member 3 moving in the hole Wa for performing the chip removing operation.

≪Piston configuration≫
As shown in FIG. 3, the cylinder 6 and the piston 7 serve as a power source for moving the linear member 4 and the chip removing member 3. A piston rod 7a is integrally formed on the piston 7 on the base end side (arrow E direction side), and a piston rod 7b is integrally formed on the distal end side (arrow D direction side). When the piston 7 is pressed by the fluid fed into the cylinder 6 and moves in the axial direction, the spherical body 15 supported by the rotating body 14 integral with the piston rod 7a in response to this movement is formed into a spiral guide groove 13a. The linear member 4 and the chip removing member 3 are moved forward and backward while being rotated about the axis.
A magnet M of the sensor S is implanted on the outer peripheral surface of the piston 7, and an O-ring O is fitted in the formed annular groove. The piston 7 is made of, for example, a nonmagnetic material such as an aluminum alloy.

Piston rods 7a and 7b projecting from the center portions on both sides of the piston 7 are pivotally supported by the partition walls 11 and 12, respectively, and screw holes 7c and 7d are bored at the center portions of the tip surfaces.
The piston rod 7a is inserted into the cylindrical body 13 through the shaft hole 11a of the partition wall 11 from the inside of the cylinder 6, and a cylindrical shape is obtained by screwing a bolt B into the screw hole 7d on the tip surface. The rotating body 14 is fixed, and the piston 7 and the rotating body 14 move together. The piston rod 7a and the rotating body 14 are supported by inserting a half of one side of the spherical body 15 into a support groove 14a formed on the outer peripheral surface of the rotating body 14, and supporting the other side of the spherical body 15. The half is movably engaged with a spiral guide groove 13 a formed in the cylinder of the cylindrical body 13, so that it can rotate along the guide groove 13 a.
On the other hand, the piston rod 7b on the chamber 9 side is disposed in the chamber 9 through the shaft hole 12a of the partition wall 12 from within the cylinder 6, and the proximal end of the linear member 4 is inserted into the screw hole 7c on the distal end surface. A detachable screw 4 a fixed to the part is screwed so that the linear member 4 moves integrally with the piston 7.

≪Configuration of linear member≫
As shown in FIG. 3, the linear member 4 is a member for transmitting the movement of the piston 7 rotating around the axis while reciprocating in the axial direction to the chip removing member 3, for example, a wire, Made of metal such as piano wire. The linear member 4 is inserted into a tubular member 5 formed of a flexible material, and a base end portion is fixed to a tip end portion of the piston rod 7b via an adapter 16, and a tip end portion is a chip removing member. 3 is brazed with solder or the like. More specifically, the base end portion of the linear member 4 is inserted through an insertion hole formed in the axial center line of the adapter 16 and is threaded from the outer peripheral direction of the adapter 16 toward the axial center. The adapter 16 is fixed by screwing the set screw N into the hole 16a, and the attachment / detachment screw 4a fixed to the tip of the adapter 16 is attached to the screw hole 7c formed on the end surface of the piston rod 7b. It is fixed freely. For this reason, the linear member 4, the chip removal member 3, and the adapter 16 can be replaced when damaged.

≪Configuration of tubular member≫
The tubular member 5 serves as a guide member for inserting the linear member 4 that easily curves and deforms and guides it in a desired direction, and the flow of the jetting fluid in the chamber 9 up to the hole Wa of the workpiece W. The role as a pipe sent by the path 5a and the ejection fluid are ejected from the ejection port 5c disposed in the vicinity of the base end side of the chip removing member 3 to remove chips Wc and chips in the hole Wa of the workpiece W. It serves as a nozzle that blows away and removes the chips Wc adhering to the member 3. The tubular member 5 is formed of a hard pipe-shaped member having an inner diameter larger than the outer diameter of the linear member 4. The tubular member 5 includes a flow path 5a through which the linear member 4 is loosely inserted and the ejection fluid flows, an inflow port 5b formed at the base end portion for taking in the ejection fluid, and formed at the distal end portion to eject the ejection fluid. And a spout 5c through which the linear member 4 is inserted so as to freely advance and retract.

  As shown in FIG. 2, the tubular member 5 is conveyed to a predetermined position of the bearing portion We while being supported by the guide member 1d in the vicinity of the distal end portion. The spout 5c at the tip is curved at approximately 90 degrees so as to be easily inserted into the hole Wa of the workpiece W (see FIG. 3). In this way, the tubular member 5 has a distal end in accordance with the shape of the bearing portion We and the hole Wa of the workpiece W in order to guide the linear member 4 to the hole Wa of the workpiece W and to blow the ejection fluid into the hole Wa. Bending the direction of the part makes it easy to perform the chip removal work.

As shown in FIG. 3, the flow path 5 a is a space formed between the inner wall of the tubular member 5 and the outer peripheral surface of the linear member 4 inserted into the tubular member 5. This flow path 5a consists of a space of a size that allows the linear member 4 in the flow path 5a to vibrate by the flowing jetting fluid.
The inflow port 5 b at the base end is attached to the chamber 9 by fitting into a nipple 17 screwed into the through hole 9 a of the chamber 9, and is connected to communicate with the inside of the chamber 9.
The ejection port 5c at the distal end is a nozzle that ejects the ejection fluid, is formed at the distal end opening of the tubular member 5, and is disposed at the opening end of the hole Wa of the workpiece W during the chip removal operation. From this jet nozzle 5c, the linear member 4 which fixed the chip | tip removal member 3 to the front-end | tip is penetrated so that advance / retreat is possible, and it comes in / out.

≪Configuration of fluid supply means≫
As shown in FIG. 3, the fluid supply means 8 is for supplying a jetting fluid (air or liquid) into the flow path 5 a of the tubular member 5. The fluid supply means 8 includes, for example, a fluid supply source C that generates an ejection fluid, a control valve V3 that adjusts an ejection fluid sent from the fluid supply source C to the chamber 9, and an ejection fluid from the fluid supply source C. And a chamber 9 into which is fed.

≪Composition of the chamber≫
The chamber 9 is a member for taking in the jetting fluid from the control valve V3 installed on the outer peripheral wall and feeding the jetting fluid into the tubular member 5 installed on the side wall on the chip removing member 3 side. It consists of a shaped member. A through hole 9a into which the nipple 17 is screwed is formed in the side wall of the chamber 9 on the chip removing member 3 side, and a partition wall 12 is installed and closed in the opening on the cylinder 6 side. A piston rod 7b having an adapter 16 attached to the tip is pivotally supported at the center of the partition wall 12 so as to be able to advance and retract spirally into the chamber 9. In the chamber 9, the linear member 4 is wired from the center of the through hole 9 a to the center of the end surface of the adapter 16, and the piston rod 7 b and the adapter 16 protrude from the center of the partition wall 12. Has been.

  The sensor S is a position detector installed to detect the movement amount and position of the chip removing member 3 and the linear member 4. The sensor S detects the axial movement of the piston 7 that spirally moves while rotating integrally with the chip removing member 3 and the linear member 4, thereby indirectly detecting the chip removing member 3 and the linear member. The amount of movement 4 and its position are detected. The sensor S includes a magnet M disposed on the outer peripheral surface of the piston 7, an operating end detector Sa that detects the magnetism of the magnet M disposed on the operating end on the distal end side of the outer peripheral surface of the cylinder 6, and And a retracted end detecting portion Sb that is disposed at the retracted end on the base end side of the outer peripheral surface and detects the magnetism of the magnet M.

The operating end detection unit Sa and the backward end detection unit Sb are electrically connected to the control unit 10, and the control unit 10 controls the control valves V <b> 1 and V <b> 2 based on an electric signal by position detection from the sensor S. The valve body is controlled to control the movement of the piston 7. The operating end detection unit Sa and the backward end detection unit Sb are magnetic detection units that detect the magnetism of the magnet M, and include a magnetic sensing element such as a Hall element, a coil through which a current flows due to a magnetic force, and the like. The operating end detecting unit Sa and the retracting end detecting unit Sb detect whether or not the chip removing member 3 inserted from the retracted end side to the operating end side of the hole Wa of the workpiece W has removed all the chips Wd in the hole Wa. In order to be able to do so, it is installed at a position that matches the axial length (operating stroke) of the hole Wa.
The operating end detection unit Sa is arranged on the outer peripheral surface of the cylinder 6 in accordance with the position of the piston 7 so that the piston 7 can be detected when the chip removing member 3 is at the operating end (front end side opening end) of the hole Wa. It is installed on the tip side.
The retreat end detection unit Sb is arranged in accordance with the position of the piston 7 so that the piston 7 can be detected when the chip removing member 3 is at the retreat end (base end side open end) of the hole Wa. Is installed.

≪Configuration of chip removal member≫
4A and 4B are views showing an installation state of the chip removing member, where FIG. 4A is an enlarged side view, and FIG. 4B is an AA cross-sectional view.
As shown in FIG. 4, the chip removing member 3 is a cutter that cuts out the burrs Wb in the holes Wa and pushes the chips Wc out of the holes Wa, and the mounting holes 3 e drilled on the center line are linear members. 4 is inserted and brazed (see FIG. 1). The chip removing member 3 includes tapered portions 3a and 3b formed at the distal end portion and the proximal end portion, a plurality of groove portions 3c formed on the outer peripheral surface in the axial direction, and an edge formed between the groove portions 3c. A portion 3d and the mounting hole 3e are provided. The chip removing member 3 is formed by forming tapered portions 3a and 3b and a groove portion 3c on a cylindrical member made of metal such as tool steel. The chip removal member 3 formed in this way can be formed to have a relatively small outer diameter and inserted into the small hole Wa to remove the chip Wd.

The taper portions 3a and 3a are formed to facilitate excision of the burrs Wb at the opening ends on both sides of the hole Wa (see FIG. 1).
The groove portion 3c is formed in the four directions of the outer peripheral surface in the up, down, left, and right directions in the axial direction, so that when the chip removing member 3 is inserted into the hole Wa, the ejection fluid and the chips Wc are transferred to the groove portion 3c. It is formed so as to flow inside (see FIG. 3).
The edge portion 3d is a cutting blade that cuts the burr Wb in the hole Wa, and is formed by drilling the groove portion 3c in the chip removing member 3 (see FIG. 1).
As shown in FIG. 4B, the mounting hole 3e has a small diameter at the center and a large diameter at both opening ends, so that it can be easily soldered.

≪Structure of rotating body≫
The rotating body 14 is inserted into and supported by a support groove 14 a formed on the outer peripheral surface of a spherical body 15 made of a steel ball or the like, and a reciprocating piston 7 is formed on a guide groove 13 a formed on the inner surface of the cylindrical body 13. , The chip removal member 3 that moves integrally therewith is rotated so that the burr Wb can be cut off at the edge portion 3d (see FIGS. 4A and 4B). It is a member. The rotating body 14 is made of metal in a substantially cylindrical shape. The rotating body 14, the spherical body 15, and the spiral guide groove 13 a of the cylindrical body 13, the piston 7, the linear member 4, and the chip removing member 3 A rotation mechanism that rotates and moves the adapter 16 in a spiral is configured.

≪Configuration of cylindrical body≫
The cylindrical body 13 has a piston rod 7a and a rotating body 14 provided therein, and a guide groove 13a engaged with one half of the spherical body 15 supported by the support groove 14a of the rotating body 14 is spirally formed on the inner wall. And a cylindrical member for converting the rotation of the rotating body 14 into an axial movement. The cylindrical body 13 is fixed to the end surface of the cylinder 6 on the retracted end side.

  The control unit 10 controls the fluid sent into the cylinder 6 from the fluid supply source C by controlling the opening and closing of the valve bodies of the control valves V1 and V2 based on the detection signal of the piston 7 from the sensor S, and the control valve. It is a member that controls V3 and adjusts the ejection fluid that is fed into the chamber 9 and the linear member 4. The control unit 10 may be provided with a power switch for the chip removing device 1 and switches for manually controlling the control valves V1, V2, and V3.

≪Operation of chip removal device≫
Next, operation | movement of the chip removal apparatus 1 is demonstrated, referring each figure.
As shown in FIG. 3, at the time of a stop, the chip removal member 3, the linear member 4, the piston 7, the rotating body 14, and the spherical body 15 are in a state of approaching the retracted end (base end side). .

  When removing the chips Wd in the hole Wa of the workpiece W, first, the power switch (not shown) of the chip removing device 1 is turned on, and the tips of the chip removing member 3 and the tubular member 5 are connected to a robot (not shown). ) Automatically moves the table 1b and the guide member 1d (see FIG. 2) to align with the open end (retracted end) of the hole Wa. At this time, the tubular member 5 is formed of a hard member, and the tip end portion is curved in accordance with the installation state of the hole Wa. Therefore, the operation of aligning the ejection port 5c and the chip removing member 3 with the hole Wa is performed. easy.

  When the power switch of the chip removing device 1 is turned on, the fluid supply source C, the control unit 10, and the sensor S are turned on. Further, when the start switch (not shown) is turned ON, the control unit 10 controls the control valves V1 and V2 to send the fluid from the fluid supply source C into the cylinder 6 and move the piston 7 toward the tip (arrow D). And the jetting fluid is controlled to be fed into the chamber 9 from the fluid supply source C.

  The piston 7 is pressed by the fluid from the fluid supply source C and moves in the distal direction of the arrow D together with the rotating body 14, the spherical body 15, the adapter 16, the linear member 4, and the chip removing member 3. At this time, since the spherical body 15 is engaged with the guide groove 13a of the cylindrical body 13, the piston 7 is guided in the guide groove 13a, and the piston 7 spirally rotates around the axis in the direction of arrow D. Will move.

  Then, the chip removing member 3 approaches the workpiece W while rotating according to the spiral movement of the piston 7, and first, the taper portion 3a comes into contact with the opening end of the hole Wa and is at the front opening end of the hole Wa. The burr Wb is excised. At this time, the ejection fluid sent from the fluid supply source C through the control valve V3 and the chamber 9 into the flow path 5a of the tubular member 5 is ejected from the ejection port 5c. The jetting fluid flows in the tubular member 5 to vibrate the linear member 4 and the chip removing member 3 to improve the chip Wd removing effect, and adheres to the inside of the hole Wa and in the vicinity of the opening end. The chips Wc are blown off to the lateral holes Wf outside the holes Wa, and the chips 2 are sucked by the suction machine 2.

  Further, the chip removing member 3 is vibrated by the jetting fluid and enters the inside of the hole Wa while being rotated by the linear member 4 or the like, and the burr Wb in the hole Wa is cut off by the edge portion 3d. In the hole Wa, the ejection fluid ejected from the ejection port 5c flows to the side hole Wf side through the groove 3c of the chip removing member 3 formed in the axial direction, and the chips Wc on the inner wall of the hole Wa. The chips Wc adhering to the chip removing member 3 are blown off from the hole Wa to the side hole Wf side.

When the chip removal member 3 moves while vibrating and rotating and reaches the opening end on the side of the lateral hole Wf of the hole Wa, the taper portion 3b on the near side comes into contact with the opening end of the hole Wa and has a burr at the opening end. Wb is excised.
As described above, the chip removing member 3 moves in the hole Wa while vibrating and rotating, thereby efficiently cutting the burrs Wb in the whole hole Wa and cutting them into chips Wc. Chip Wc remaining in the hole Wa from the beginning can be removed from the hole Wa by the ejection fluid ejected from the ejection port 5c. Further, since the taper portions 3a and 3b are formed on the chip removing member 3, when the taper portions 3a and 3b rotate and vibrate and pass through the open end of the hole Wa, the burr at the open end is formed. Wb can be completely excised.

When the chip removal member 3 advances to the horizontal hole Wf (stroke end), the magnet M provided on the piston 7 that moves integrally with the chip removal member 3 comes close to the operation end detection unit Sa and detects the operation end. The part Sa detects the magnetism of the magnet M. The sensor S confirms that the chip removal member 3 has advanced to a predetermined position (working end) of the workpiece W to perform the removal work of the chip Wd by detecting the magnetism, and sends an electric signal to the control unit 10. Output.
In addition, when the sensor S at this time does not detect the magnetism of the magnet M and is in the OFF state, the piston 7 and the chip removal member 3 do not move to the predetermined position (operating end), and the chips Wc enter the hole Wa. It can be determined as clogging, a processing error of the hole Wa, a malfunction of the chip removing device 1, a failure of the sensor S, or the like.
The control unit 10 controls the valve bodies of the control valves V1 and V2 based on the magnetic detection signal (electrical signal) from the sensor S, so that the fluid flows from the fluid supply source C through the control valve V2 to the cylinder 6. It switches so that it may flow into the chamber 6a.

  Then, the piston 7 is pressed by the fluid and moved in the direction of the base end of the arrow E, and the chip removing member 3, the linear member 4, the adapter 16, the rotating body 14, and the spherical body 15 Both rotate in the direction of arrow E in a spiral manner along the guide groove 13a and return to the original position (retracted end) shown in FIG. The chip removing member 3 retreats the burr Wb remaining in the hole Wa by moving backward while vibrating and rotating in the same manner as described above while returning to the arrow E direction. The ejection fluid is continuously ejected from the ejection port 5c, and the suction machine 2 continues to suck the chips Wd and air in the lateral holes Wf and Wa, so that the chips Wc are removed again and collected. Is done.

  When the piston 7 moves to the retracted end of the cylinder 6 that contacts the partition wall 11, the retracted end detecting portion Sb detects the magnetism of the magnet M, and it is detected that the piston 7 and the chip removing member 3 have returned to the retracted end. The electrical signal is output to the control unit 10. The control unit 10 closes the valve bodies of the control valves V 1, V 2, V 3 to stop the supply of fluid from the fluid supply source C to the cylinder 6 and the supply of the ejection fluid to the tubular member 5 through the chamber 9. And exit.

  Furthermore, at this time, it is confirmed whether or not the chip removal member 3 has returned to the retracted end by a chip removal member detection sensor (not shown) that detects the position of the chip removal member 3. When the chip removal member detection sensor (not shown) detects that the chip removal member 3 has returned to the retracted end, the linear member 4 and the chip removal member 3 are not broken or dropped off. I can confirm that.

When the chip removal member 3 is not detected by the chip removal member detection sensor (not shown), the chip removal member 3 does not return to the retracted end, which is the original position, so the linear member 4 is cut. It can be confirmed that the chip removal member 3 is spilled or dropped and the chip Wd cannot be removed properly.
In this case, the linear member 4 and the chip removing member 3 can be exchanged by removing the chamber 9 from the cylinder 6 and removing the attaching / detaching screw 4a provided at the base end portion of the linear member 4 from the piston rod 7b. it can. For this reason, the chip removal apparatus 1 can be easily repaired by automatically detecting and replacing the breakage of the linear member 4 and the chip removal member 3.

  Thus, the chip removing device 1 can automatically and completely remove the chips Wd in the holes Wa of the workpiece W, and can reliably detect abnormalities such as the chip removing member 3 and the linear member 4. It is a device with.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea, and the present invention extends to these modifications and changes. Of course.

≪Modification≫
For example, in the above-described embodiment, the support groove 14 a is formed on the outer peripheral surface of the rotating body 14 to support the spherical body 15, and the spherical guide body 15 is formed on the inner peripheral surface of the cylindrical body 13. Although the rotation mechanism R1 which engages with 13a and rotates the piston 7, the linear member 4, and the chip removal member 3 in a spiral manner has been described, it is not limited to this.
For example, the rotation mechanism R1 forms a spiral guide groove 13a on the outer peripheral surface of the rotation body 14 or the piston rod 7a, and forms a support groove 14a on the inner peripheral surface of the cylindrical body 13, and this support groove 14a. Alternatively, the spherical body 15 may be supported.

  Further, a rotation mechanism R1 for rotating the piston 7 and the chip removing member 3 may be installed in the chamber 9. In this case, the rotation mechanism R1 forms a spiral guide groove 13a on either the outer peripheral surface of the piston rod 7b or the adapter 16 or the inner peripheral surface of the chamber 9, and the outer periphery of the piston rod 7b or the adapter 16 A support groove 14a is formed on the other of the surface and the inner peripheral surface of the chamber 9, and the spherical body 15 is supported by the support groove 14a.

FIG. 5 is a schematic plan view of a main part of a chip removing device showing a modification of the present invention. FIG. 6 is a schematic side view of a main part of a chip removing device showing a modification of the present invention.
Further, as shown in FIGS. 5 and 6, the rotation mechanism R1 (see FIG. 3) fixes a pinion (rotating body) 18 to the tip of the piston rod 7a, and the pinion 18 is a linear reciprocating mechanism 20. May be a rotation mechanism R2 that rotates the piston rod 7a by meshing with the rack 19 that reciprocates linearly. In this case, the linear reciprocating mechanism 20 is, for example, a piston cylinder mechanism or a motor gear mechanism that includes a piston 20a that is operated by fluid from a fluid supply source C (see FIG. 3) and a cylinder 20b in which the piston 20a is provided. (Not shown).
In this way, the piston rod 7a that moves forward and backward by the rack 19 and the pinion 18 may be rotated.
The pinion 18 corresponds to a “rotating body” described in the claims.

  The fluid fed into the cylinder 6 is not limited to compressed air, and may be oil or the like. Moreover, the jetting fluid fed into the tubular member 5 is not limited to air, but may be a liquid such as a cleaning liquid or cutting oil, or a mixture of air and these liquids. In these cases, since the types of fluids are different, the fluid supply source C is provided separately.

  Moreover, although the said embodiment demonstrated removing the burr | flash Bb with the chip removal member 3 installed in the front-end | tip of the linear member 4, the chip removal member 3 does not need to be. That is, the linear member 4 protruding from the ejection port 5c is cut out by striking the burr Wb on the inner wall of the hole Wa by entering the hole Wa of the workpiece W while vibrating by the ejection fluid. You can also. The burr (chip) Wb separated from the inner wall of the hole Wa in this way can be pushed out by the ejection fluid and removed.

It is a principal part expanded sectional view which shows an example when removing chips with the chip removal apparatus which concerns on embodiment of this invention. It is a schematic plan view which shows the chip removal apparatus which concerns on embodiment of this invention. It is a general | schematic expanded sectional view which shows the chip removal apparatus which concerns on embodiment of this invention. It is a figure which shows the installation state of a chip removal member, (a) is an enlarged side view, (b) is AA sectional drawing. It is a principal part schematic plan view of the chip removal apparatus which shows the modification of this invention. It is a principal part schematic side view of the chip removal apparatus which shows the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chip removal apparatus 3 Chip removal member 3a, 3b Tapered part 3c Groove part 4 Linear member 5 Tubular member 5a Flow path 5b Inlet 5c Injector 6 Cylinder 7 Piston 9 Chamber (fluid supply means)
13 Cylindrical body 13a Guide groove 14 Rotating body 14a Supporting groove 15 Spherical body 18 Pinion (Rotating body)
19 Rack C Fluid supply source (fluid supply means)
M Magnet R1, R2 Rotating mechanism W Work Wa Hole Wb Burr Wc Chip Wd Chip

Claims (6)

A chip removing device for removing chips remaining in a hole formed in a workpiece,
A cylinder supplied with fluid from a fluid source;
A piston that is reciprocally moved in the cylinder and is moved by the fluid;
A linear member having a proximal end fixed to the piston and a distal end inserted into the hole of the workpiece;
The linear member is loosely inserted and has a flow path through which the ejection fluid flows, the base end portion has an inflow port for taking in the ejection fluid, the distal end portion ejects the ejection fluid, and A tubular member having a spout through which a linear member is inserted so as to freely advance and retract;
And a fluid supply means for supplying the ejection fluid to the inflow port. The fluid supply means includes a chamber into which the ejection fluid is fed from the fluid supply source,
The chip removal device according to claim 1, wherein the inflow port is connected to the chamber. The tip of the linear member is provided with a chip removing member that is inserted into the hole and removes the chip.
3. The chip removal member according to claim 1, wherein a tip end portion and a base end portion are formed in a tapered shape, and a groove portion formed in an axial direction is formed on an outer peripheral surface. Chip removal equipment. The chip removal device according to any one of claims 1 to 3, further comprising a rotating body that reciprocates integrally with the piston. The cylindrical body is further provided, wherein the rotating body is inserted while being engaged, and the rotating body is rotated around the axis of the piston in accordance with the reciprocating movement of the rotating body. Chip removal equipment. A spiral guide groove is formed on either the outer peripheral surface of the rotating body or the inner peripheral surface of the cylindrical body,
The other of the outer peripheral surface of the rotating body and the inner peripheral surface of the cylindrical body is provided with a support groove and a spherical body that is disposed in the support groove and engages with the guide groove. The chip removal apparatus according to claim 5.

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