JP2007144553A - Deburring tool and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a deburring tool as a single body while keeping a structure simple, and to remove burrs with superior operability, when the burrs on a rear face generated when punching a body to be machined are removed from a front face side. <P>SOLUTION: This deburring tool 1 has a cylindrical body 3 opened by an opening 2 at a lower side to be one end side of an axial direction x and closed by an upper side to be the other end, a deburring member 5 rotatably mounted integrally with the cylindrical body 3 on the inner peripheral surface of the opening 2 of the cylindrical body 3 by a fixing means such as a screw 4, a pressing member 6 provided in the cylindrical body 3 to be movable in the axial direction x so that the deburring member 5 may be radially expanded in an outer peripheral direction y by pressing the deburring member 5, and an operation member 7 provided in the upper part of the cylindrical body 3 to operate the movement in the axial direction x of the pressing member 6 from the outside of the cylindrical body 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a deburring tool and a deburring method that can remove a burr on the back surface generated during drilling of a workpiece such as a metal plate from the front side.

  In a wide industrial field, a plate or pipe made of metal such as iron, copper, or aluminum is used as a workpiece, and the workpiece is machined with a drill or the like to make a hole at a desired position. Has been done. When such a workpiece is drilled, burrs are generated around the holes on the front and back surfaces of the workpiece. This burr has a bad influence when the workpiece is coated for rust prevention after drilling or when screwed into the hole, so it must be removed in advance.

  Such deburring can be performed with good workability by using a reamer, a dedicated deburring tool, or the like from the surface side of the burr generated on the surface of the workpiece. On the other hand, for burrs occurring on the back surface of the workpiece, workability deteriorates because deburring usually has to be performed from the back surface side. In other words, there may be cases where the work space cannot be secured on the back side of the workpiece. In this case, the workpiece must be turned over or lifted to perform deburring work, which is troublesome. Work time will be longer. In addition, when the workpiece is heavy, the operator is forced to take an unreasonable posture, which places a burden. Furthermore, when the workpiece is a pipe material, it is difficult to use a deburring tool or the like due to shape restrictions, so it must be performed by other methods, and the work time becomes longer as in the case described above. .

From such a situation, a deburring tool capable of removing the burr on the back surface generated when drilling the workpiece from the front side is desired, and such a deburring tool is provided (for example, (See Patent Document 1). This deburring tool (drilling tool) is a tool that has two drilling blades attached to the tip of a tool body in which a shank connected to a rotating spindle of a cutting machine or the like is formed on the base end side. An auxiliary blade attachment device having a connecting material having a deburring / chamfering auxiliary cutter for removing and removing the burrs in the concave groove provided on the outer peripheral surface of the tip is incorporated. "That's it. In order to perform deburring with such a deburring tool, after drilling at a desired position of the workpiece by the drilling blade, the auxiliary cutter is passed through the hole from the front surface to the back surface side. First, burrs on the front surface are removed by the auxiliary cutter, and then the burrs on the back surface side are removed by passing the auxiliary cutter in the opposite direction from the inside of the hole.
JP-A-10-263910

  By the way, in the deburring tool as described in the above-mentioned Patent Document 1, since the deburring tool is configured to be used by being connected to a rotary main shaft of a cutting machine or the like, a power source is required. Therefore, it cannot be used easily and is not easy to use. That is, since the deburring tool must always be operated together with the cutting machine driven by the power source, the deburring tool cannot be used alone. In addition, since the deburring tool is connected to and operated by a rotary spindle such as a cutting machine, it must have mechanical strength that can withstand driving by the rotary spindle and must be designed to have a solid structure. Therefore, the cost increase is inevitable. Moreover, since the deburring tool removes burrs only by the force of the spring, there are cases where burrs cannot be completely removed.

  Accordingly, the present invention provides a deburring tool that can be used as a single unit with a simple structure and can be easily removed when removing burrs on the back surface generated during drilling of a workpiece. And to provide a deburring method.

In order to achieve the above object, an invention according to claim 1 is a deburring tool for removing a burr on the back surface generated during drilling of a workpiece from the front surface side. A cylindrical body having an outer diameter that can pass through the inside and having at least one axial end opened, and the cylindrical body that is provided inside the opening of the cylindrical body and that extends in the outer circumferential direction of the opening. A deburring member that can rotate integrally, a pressing member that is provided inside the cylindrical body and that can move in the axial direction so as to press the deburring member and spread it in the outer circumferential direction, and the cylindrical body And an operating member capable of operating the axial movement of the pressing member from the outside of the cylindrical body.
(Function)
When the cylindrical body reaches the back surface of the hole substantially through the hole surface of the workpiece, the pressing member moves in the cylindrical body in the axial direction according to the operation of the operating member, and the deburring member is moved. Since it presses, a deburring member is spread in the outer peripheral direction of the opening part of a cylindrical body. When the cylindrical body is rotated in a state where the deburring member is spread in this manner, the deburring member rotates integrally with the cylindrical body to remove burrs generated on the back surface of the workpiece.

The invention according to claim 2 is the deburring tool according to claim 1, wherein when the pressing member is operated by the operating member and rises in the axial direction, the deburring member is pressed to It is characterized by having a shape that widens in the outer circumferential direction.
(Function)
By configuring the pressing member so that the deburring member is pressed when the cylindrical body is lifted in the axial direction in accordance with the operation of the operating member, the deburring member is pressed when the pressing member is lifted, and the outer circumferential direction The burrs generated on the back surface of the workpiece are removed in a state of being spread.

The invention according to claim 3 is the deburring tool according to claim 1, wherein when the pressing member is operated by the operating member and descends in the axial direction, the deburring member is pressed to It is characterized by having a shape that widens in the outer circumferential direction.
(Function)
By configuring the pressing member so that the deburring member is pressed when the cylindrical body is lowered in the axial direction in accordance with the operation of the operating member, the deburring member is pressed when the pressing member is lowered, and the outer circumferential direction. The burrs generated on the back surface of the workpiece are removed in a state of being spread.

A fourth aspect of the present invention is the deburring tool according to any one of the first to third aspects, wherein the deburring member is replaceable in accordance with an inner diameter of a hole drilled in the workpiece. It is characterized by being.
(Function)
By configuring the deburring member to be replaceable according to the inner diameter of the hole drilled in the workpiece, it can be applied to deburring of the back surface of various workpieces drilled with holes of different inner diameters. .

The invention according to claim 5 is a deburring method for removing the burr on the back surface generated during drilling of the workpiece from the front surface side, and at least one end side in the axial direction is opened with respect to the workpiece drilled in advance. When the cylindrical body is passed from the front surface of the hole to the back surface side with the opening portion on the lower side, the opening portion of the cylindrical body is provided inside the opening portion when it substantially reaches the back surface of the hole. The deburring member is spread in the outer peripheral direction of the opening and then rotated integrally with the cylindrical body to remove burrs generated on the back surface of the workpiece by the deburring member.
(Function)
When the cylindrical body is allowed to pass from the surface of the hole of the workpiece to the lower side and the opening of the cylindrical body reaches the substantially back surface of the hole, the deburring member provided in the opening is opened. Spread in the outer circumferential direction. Next, when the deburring member is rotated integrally with the cylindrical body in the state of being spread in this manner, the deburring member removes the burr generated on the back surface of the workpiece.

According to a sixth aspect of the present invention, in the deburring method according to the fifth aspect, when the opening of the cylindrical body substantially reaches the back surface of the hole, the deburring member is moved in the outer circumferential direction of the opening. After spreading radially, it is rotated integrally with the cylindrical body, and burrs generated on the back surface of the workpiece are removed by the deburring member.
(Function)
When the opening of the cylindrical body reaches the substantially back surface of the hole, if the deburring member is rotated integrally with the cylindrical body in a state of radially expanding in the outer peripheral direction of the opening, the deburring member is Remove any burrs that occur in

A seventh aspect of the invention is the deburring method according to the fifth or sixth aspect, wherein the cylindrical body is provided inside the cylindrical body when the opening of the cylindrical body substantially reaches the back surface of the hole. The pressing member is raised in the axial direction of the cylindrical body to press the deburring member, thereby spreading the deburring member in the outer peripheral direction of the opening.
(Function)
When the opening of the cylindrical body reaches the substantially back surface of the hole, the deburring member is pressed by raising the pressing member provided in the cylindrical body in the axial direction of the cylindrical body, Is spread in the outer peripheral direction of the opening.

The invention according to claim 8 is the deburring method according to claim 5 or 6, wherein when the opening of the cylindrical body reaches substantially the back surface of the hole, the cylindrical body is provided inside the cylindrical body. The pressing member is lowered in the axial direction of the cylindrical body to press the deburring member, thereby spreading the deburring member in the outer peripheral direction of the opening.
(Function)
When the opening of the cylindrical body reaches the substantially back surface of the hole, the deburring member is pressed by lowering the pressing member provided inside the cylindrical body in the axial direction of the cylindrical body, and the deburring member Is spread in the outer peripheral direction of the opening.

  According to the first aspect of the present invention, a cylindrical body having an outer diameter capable of passing through the inside of a hole previously drilled in the workpiece, and at least one end side in the axial direction being opened, and the opening of the cylindrical body A deburring member that is provided inside the opening and that extends in the outer peripheral direction of the opening and can rotate integrally with the cylindrical body, and a shaft that is provided inside the cylindrical body and presses the deburring member to expand in the outer peripheral direction. Since the deburring tool is configured by the pressing member that can move in the direction and the operation member that is provided on the cylindrical body and that can operate the axial movement of the pressing member from the outside of the cylindrical body, Since the tool for use does not need to be connected to a rotating spindle such as a cutting machine as in the conventional example, a power source is not required. Therefore, since it can be used alone, it can be used easily and the usability can be improved. In addition, as the deburring tool can be used alone, the mechanical strength of the deburring tool can be set independently regardless of the rotation spindle, so it can be designed with a simple structure, Cost increase can be avoided. Further, since the force for removing burrs is determined by the operating force, the burrs can be appropriately removed by adjusting the operating force. Furthermore, any hole through which the cylindrical body can pass can be applied to deburring a wide range of holes.

  According to the invention described in claim 5, since the deburring is performed using the deburring tool having the simple structure as described above, the worker is easily generated on the back surface of the workpiece. Deburring can be removed and workability of deburring can be improved.

  Hereinafter, the present invention will be described based on the illustrated embodiments.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view showing a deburring tool according to Embodiment 1 of the present invention. The deburring tool 1 includes a cylindrical body 3 in which an opening 2 is opened at the lower side which is one end side in the axial direction x and an upper side which is the other end is closed, and the opening 2 of the cylindrical body 3. A deburring member 5 that is rotatably mounted integrally with the cylindrical body 3 by fixing means such as a screw 4 on the inner peripheral surface, and an outer circumferential direction y by pressing the deburring member 5 provided inside the cylindrical body 3 A pressing member 6 that can move in the axial direction x so as to spread radially, and an operation member 7 that is provided on the upper portion of the cylindrical body 3 and that can be operated from the outside of the cylindrical body 3 to move the axial direction x of the pressing member 6. And have.

  The cylindrical body 3 has an outer diameter d that can pass through the inside of a hole drilled in a workpiece to be deburred. Specifically, the deburring member 5 includes a plurality of support pieces 5a and a plurality of deburring blades 5b fixed to the surface of the support pieces 5a. Via the inner peripheral surface of the opening 2. As shown in the schematic cross-sectional view of FIG. 2, the relay body 13 has a recessed portion 13 a below, and a rotating shaft 14 is bridged between a pair of sleeve portions 13 b on both sides of the recessed portion 13 a so as to be rotatable. It is attached. Further, an upper portion of each support piece 5 a constituting a part of the deburring member 5 is attached to the rotation shaft 14 so as to be rotatable integrally with the rotation shaft 14. With such a configuration, when the support piece 5a is pressed from the inner peripheral surface, the deburring member 5 can spread radially in the outer peripheral direction y of the opening 2 with the rotating shaft 14 as a fulcrum. ing.

  The pressing member 6 has a hollow shape having a trapezoidal wide portion 6a on the lower side and an elongated portion 6b on the upper side, and moves (lowers or rises) in the axial direction x in accordance with an operation of the operation member 7 described later. It is configured to control the spread of the deburring member 5. One end of the operating member 7 is fixed to the outer peripheral surface of the cylindrical body 3 by a pin 8a, and the other end is always urged in the outer peripheral direction y by a spring 9 attached to the outer peripheral surface of the cylindrical body 3. One end of the operating lever 10 is coupled to the other end of the control lever 12 so as to be swingable by a pin 8b and the other end is fixed to the other end of the operating lever 10, and one end is pressed by a pin 8c. And a control lever 12 which is fixed to the upper end of the elongated portion 6 b of 6 and has the other end coupled to one end of the intermediate lever 11.

  When the operation lever 10 is not operated (not pushed), the intermediate lever 11 and the control lever 12 are both pulled by the operation lever 10 through the pin 8b when the operation lever 10 is not operated (not pushed). Yes. For this reason, since the weight of the pressing member 6 is applied to the control lever 12, when the pressing member 6 is lowered, the wide portion 6a of the pressing member 6 is attached to the inner peripheral surface of the cylindrical body 3. It remains below the take-up member 5 and at a lower position in the opening 2. Therefore, the deburring member 5 does not spread in the outer peripheral direction y of the opening 2.

  Next, when the operation lever 10 of the operation member 7 is operated (pressed in the A direction), a force in a direction opposite to the urging force of the spring 9 is applied, so that the spring 9 is compressed. For this reason, since the intermediate lever 11 and the control lever 12 of the operation member 7 both move upward via the pin 8b, the pressing member 6 rises when the elongated portion 6b is pushed up by the control lever 12. As a result, as the pressing member 6 rises, the wide portion 6a also rises below the deburring member 5 and from a position below the opening 2. Therefore, the wide portion 6a is deburred by the action of the surrounding slope. The inner peripheral surface of the support piece 5a of the take-up member 5 is gradually expanded. Accordingly, the deburring member 5 rotates integrally with the rotation shaft 14 with the rotation shaft 14 as a fulcrum in response to the rise of the pressing member 6, and gradually spreads radially in the outer peripheral direction y of the opening 3. Although not shown, a guide that supports the pressing member 6 so as to be movable in the x direction is provided in the opening 3.

  Next, a deburring method using the deburring tool 1 having such a configuration will be described.

  3A to 3C are schematic cross-sectional views for explaining the present deburring method. Here, as shown in FIG. 3A, a workpiece 15 in which a burr 17 is generated on the back surface of the hole 16 in advance is an object. First, in a state where the operator does not operate the operation member 7 by grasping the cylindrical body 3 of the deburring tool 1 (a state where the operation lever 10 is not pressed), the opening 2 is on the lower side and the surface of the hole 16 is removed. Pass toward the back side. In this case, the outer shape d of the cylindrical body 3 is set to a value that allows the cylindrical body 3 to pass through the hole 16, and the deburring member 5 is the outer periphery of the opening 2 of the cylindrical body 3 as described above. Since it does not spread in the direction y, the cylindrical body 3 can easily pass through the hole 16.

  Next, as shown in FIG. 3 (b), when the opening 2 of the cylindrical body 3 reaches the substantially back surface of the hole 16, the operation member 7 is operated (the operation lever 10 is pushed in the A direction), A deburring member 5 constituted by a plurality of support pieces 5 a and a deburring blade 5 b is radially spread in the outer peripheral direction y of the opening 2 of the cylindrical body 3. That is, as described above, the pressing member 6 is lifted by pressing the operating lever 10, so that the deburring member 5 is integrated with the rotating shaft 14 with the rotating shaft 14 as a fulcrum in response to the rising of the pressing member 6. Since it rotates, it gradually spreads radially in the outer peripheral direction y of the opening 3.

  Subsequently, when the operator manually rotates the cylindrical body 3 in any direction as indicated by an arrow, the deburring member 5 is radially integrated with the cylindrical body 3 in the outer peripheral direction y of the opening 2. The burring blade 5b rotates in the spread state, and the burrs 17 generated on the back surface of the workpiece 15 are removed.

When such deburring is completed, the operator releases his / her hand from the operation lever 10 of the operation member 7, so that the pressing member 6 is lowered as described above, and the wide portion 6 a is below the deburring member 5. And it comes to remain in the lower position in the opening part 3. Accordingly, the deburring member 5 narrows in the axial direction from the outer peripheral direction y of the opening 2 and returns to the lower position in the opening 3 again.

  Subsequently, the cylindrical body 3 is returned from the back surface of the hole 16 toward the front surface side and pulled out from the hole 16 of the workpiece 15, thereby completing the deburring operation on the back surface of the workpiece 15. It should be noted that burrs generated on the surface of the workpiece 15 are removed by a known method using a reamer or a dedicated deburring tool before or after deburring on the back surface.

  As described above, according to the deburring tool 1, the cylindrical body 3 having the opening portion 2 opened at the lower side which is one end side in the axial direction x and the upper side being the other end closed, and the cylindrical shape. A deburring member 5 attached to the inner peripheral surface of the opening 2 of the body 3 by a fixing means such as a screw 4 so as to be rotatable integrally with the cylindrical body 3, and a deburring member 5 provided inside the cylindrical body 3. The pressing member 6 that can move in the axial direction x so as to radially spread in the outer circumferential direction y and the movement of the pressing member 6 in the axial direction x provided on the upper portion of the cylindrical body 3 are external to the cylindrical body 3. Since the deburring tool 1 is constituted by the operation member 7 that can be operated from the beginning, it is not necessary to connect the deburring tool 1 to a rotary spindle of a cutting machine or the like as in the conventional example, so no power supply is required. become. Therefore, since it can be used alone, it can be used easily and the usability can be improved.

  In addition, since the deburring tool 1 can be used as a single unit, the mechanical strength of the deburring tool 1 can be set independently regardless of the rotation spindle, so that a simple structure can be designed. Thus, an increase in cost can be avoided. That is, if the deburring tool 1 is used, a power source is not required, and the operator simply operates the operating member 7 manually, so that the burr 17 on the back surface generated when drilling the workpiece 15 can be easily performed from the front side. Can be removed.

  For this reason, even when the work space for applying the deburring tool to the back surface side of the workpiece 15 cannot be secured as in the conventional case, if the deburring tool 1 configured in a compact manner is used, the workpiece is processed. Since it is not necessary to turn the body 15 upside down or lift it to work, the working time can be shortened. Further, even when the workpiece 15 is heavy, it is possible to deburr the back surface of the workpiece 15 without changing the burden on the operator. Further, even when the workpiece 15 is a pipe, burrs on the back surface can be removed from the front surface side, so that deburring can be performed without taking a long working time. Further, according to the deburring tool 1, since the force for removing the burr 17 is determined by the force (operation force) for pushing the operation lever 10, the burr 17 is appropriately (completely) removed by adjusting the operation force. Furthermore, the hole 16 through which the cylindrical body 3 can pass can be applied to deburring a wide range of holes.

  In addition, since the deburring tool 1 can be used alone, the mechanical strength of the deburring tool 1 can be set independently regardless of the rotation spindle, so that the object can be achieved without designing a particularly solid structure. Therefore, it is possible to design a simple structure according to the cost and avoid an increase in cost.

  Further, according to the deburring method using the deburring tool 1, the deburring is performed using the deburring tool 1 having a simple structure as described above. The burr 17 generated on the back surface of the body 15 can be removed, and the workability of deburring can be improved.

(Embodiment 2)
FIG. 4 is a schematic cross-sectional view showing a deburring tool 21 according to Embodiment 2 of the present invention. The deburring tool 21 includes a cylindrical body 23 in which an opening 22 is opened at the lower side, which is one end side in the axial direction x, and a guide hole 24 is provided at the upper side, which is the other end. A deburring member 25 that is rotatably mounted integrally with the cylindrical body 23 by a fixing means such as a screw 4 on the inner peripheral surface, and a deburring member 25 provided inside the cylindrical body 23 is pressed to the outer peripheral direction y. A pressing member 26 that is movable in the axial direction x so as to spread in a “C” shape, and an axial movement of the pressing member 26 that is provided on the upper portion of the cylindrical body 23 are operated from the outside of the cylindrical body 23. And a possible operation member 27.

  The cylindrical body 23 has an outer diameter d that can pass through a hole drilled in a workpiece to be deburred. The deburring member 25 includes a plurality of support pieces 25a and a plurality of deburring blades 25b fixed to the surfaces of the support pieces 25a. 22 is indirectly attached to the inner peripheral surface. The relay body 28 is configured in substantially the same manner as the structure of the schematic cross-sectional view of FIG. 2 according to the first embodiment, and a rotation shaft 29 is rotatably attached to the relay body 28. Further, an upper portion of each support piece 25a constituting a part of the deburring member 25 described above is attached to the rotation shaft 29 so as to be rotatable integrally with the rotation shaft 29. Furthermore, an inclined surface 25A is formed on the inner peripheral surface of the plurality of support pieces 25a so that the width increases toward the lower side. With this configuration, when the support piece 25a is pressed from the inner peripheral surface, the deburring member 25 spreads in a “C” shape in the outer peripheral direction y of the opening 22 with the rotation shaft 29 as a fulcrum. Can be done.

  The pressing member 26 is formed in a rod shape having a protruding portion 26a corresponding to the inclined surface 25A of the support piece 25a of the deburring member 25 and having an elongated portion 26b on the upper side. It moves in the direction x (up or down) to control the spread of the deburring member 25. The operation member 27 is fixed to the elongated portion 26b of the pressing member 26 so as to be inserted through the guide hole 24 of the cylindrical body 23, and has an operation rod 30 having an operation piece 30a at the upper end, and is wound around the operation rod 30. It comprises a spring 31 that urges the disposed pressing member 26 in the axial direction x. As shown in the cross-sectional view of FIG. 5, a protrusion piece 30b is formed around the lower portion of the operation rod 30, and a guide groove 24a corresponding to the protrusion piece 30b is formed in a part of the guide hole 24 of the cylindrical body 23. Is formed. In this way, by forming the projecting piece 30b and the guide groove 24a in part of the operating rod 30 and the cylindrical body 23, respectively, the operating member 27 is operated to move the pressing member 26 in the axial direction x as will be described later. In this case, operability can be improved.

  The operation member 27 having such a configuration is controlled so that the pressing members 26 are alternately lowered and raised in the axial direction x by alternately repeating the first and second operations as described below. Then, the deburring member 25 is operated so as to be expanded in the shape of the letter “C” in the outer peripheral direction y of the opening 22 and narrowed in the opposite direction.

  First, the operating piece 30a of the operating rod 30 of the operating member 27 is pushed in the first direction (direction B) until the protruding piece 30b passes through the guide groove 24a and reaches the back surface at the upper end of the cylindrical body 23. After the operating rod 30 is lowered, the operating rod 30 is rotated to a position where the protruding piece 30b and the guide groove 24a do not match. As a result, the protruding piece 30b of the operating rod 30 acts as a stopper and engages with the back surface of the upper end of the cylindrical body 23, so that the urging force of the spring 31 is suppressed and remains compressed. For this reason, the pressing member 26 is lowered integrally with the pressed operating rod 30, the protruding portion 26a of the pressing member 26 contacts the inclined surface 25A of the support piece 25a of the deburring member 25, and the inclined surface 25A is gradually moved. Act to press against. Therefore, as the pressing member 26 is lowered, the deburring member 25 rotates integrally with the rotation shaft 29 with the rotation shaft 29 as a fulcrum, so that a “C” shape is gradually formed in the outer circumferential direction y of the opening 23. To spread.

  Next, following the first operation, the operation piece 30a of the operation rod 30 of the operation member 27 is pushed (in the B direction) by the second operation until the protrusion 30b and the guide groove 24a coincide with each other. When the operating rod 30 is rotated, the operating rod 30 rises because the operating piece 30 a is pushed by the urging force of the spring 31. For this reason, the pressing member 26 is also lifted integrally with the operating rod 30, whereby the pressing member 26 is maintained at a preset height. This height is set at a position where the protruding portion 26a does not contact the inclined surface 25A of the support piece 25a of the deburring member 25. Accordingly, the deburring member 25 rotates integrally with the rotation shaft 29 with the rotation shaft 29 as a fulcrum and narrows in the direction opposite to the outer circumferential direction y, so that it remains at the position in the opening 22.

  Next, a deburring method using the deburring tool 21 having such a configuration will be described.

  6A to 6C are schematic cross-sectional views for explaining the present deburring method. Here, as illustrated in FIG. 6A, a workpiece 15 in which burrs 17 are generated in advance on the back surface of the hole 16 is an object. First, in a state where the operator does not operate the operation member 27 by grasping the cylindrical body 23 of the deburring tool 21 (a state where the operation rod 30 is not pushed), the opening 22 is faced down from the surface of the hole 16. Pass toward the back side. In this case, the outer diameter d of the cylindrical body 23 is set to a value that allows the cylindrical body 23 to pass through the hole 16, and the deburring member 25 is the outer periphery of the opening 22 of the cylindrical body 23 as described above. Since it does not spread in the direction y, the cylindrical body 23 can easily pass through the hole 16.

  Next, as shown in FIG. 6B, when the opening 22 of the cylindrical body 23 reaches the back surface of the substantially hole 16, a plurality of support pieces 25 a and The deburring member 25 constituted by the deburring blade 25b is spread in a letter “C” shape in the outer peripheral direction y of the opening 22 of the cylindrical body 23. That is, as described above, the pressing member 26 is lowered integrally with the operating rod 30 by pushing the operating rod 30, so that the deburring member 25 is rotated around the rotating shaft 29 as a fulcrum as the pressing member 26 is lowered. It rotates integrally with the moving shaft 29 and gradually spreads in a “C” shape in the outer peripheral direction y of the opening 23.

  Subsequently, when the operator manually rotates the cylindrical body 23 in any direction as indicated by an arrow, the deburring member 25 is integrated with the cylindrical body 23 in the outer peripheral direction y of the opening 22. The deburring blade 25b is rotated in a state of spreading in the shape of "", and the burr 17 generated on the back surface of the workpiece 15 is removed.

  When such deburring is completed, the deburring member 25 composed of the plurality of support pieces 25a and the deburring blade 25b is removed from the outer periphery of the opening 22 of the cylindrical body 23 by the second operation of the operation member 27. Narrow in the direction opposite to direction y That is, as described above, pressing the operating rod 30 raises the pressing member 26 integrally with the operating rod 30, so that the deburring member 25 is rotated around the rotating shaft 29 as a fulcrum in response to the rising of the pressing member 26. It rotates integrally with the moving shaft 29, gradually narrows in the opposite direction to the outer peripheral direction y of the opening 23, and returns to the lower position in the opening 23 again. Subsequently, the cylindrical body 23 is returned from the back surface of the hole 16 toward the front surface side and pulled out from the hole 16 of the workpiece 15, thereby completing the deburring operation on the back surface of the workpiece 15.

  As described above, according to the deburring tool 21, the same effect as in the first embodiment can be obtained. In addition, according to the deburring tool 21, when the operation member 27 is operated, the first operation and the second operation are alternately repeated, thereby generating the back surface of the workpiece 15 with a simple operation. Therefore, the deburring tool 21 that improves operability can be provided.

  Further, according to the present deburring tool 21, the deburring member 25 is fixed by the first operation, so that it is not necessary to continue to push the operation rod 30, and the force for removing the burr 17 can be made constant.

  In addition, the deburring members 5 and 25 used in the deburring tools 1 and 21 according to each embodiment are prepared in a plurality of types corresponding to various workpieces having holes with different inner diameters. Therefore, it is possible to easily replace the screw 4 with an optimum one according to the application, so that the application range can be expanded.

  By the way, each structure of this deburring tool 1,21 shows an example, and can also employ | adopt another structure, without restricting to these. For example, the configuration of the operation member 27 of the deburring tool 21 can be configured by using a ratchet mechanism such as that employed in knock type ballpoint pens. According to such a configuration, the spread of the “C” shape in the outer circumferential direction y of the deburring member can be controlled for each knocking operation, so that the usability can be further improved. In addition, each constituent material of the deburring tools 1 and 21 may be any metal material or insulating material as long as it is lightweight, relatively mechanical strength, and excellent in workability. it can. Further, the number of deburring blades constituting the deburring members 5 and 25 is not specified, and can be appropriately changed according to the purpose and application.

1 is a schematic sectional view showing a deburring tool according to Embodiment 1 of the present invention. 1 is a schematic cross-sectional view showing a part of a deburring tool according to Embodiment 1 of the present invention. 1 is a schematic cross-sectional view showing a deburring method using a deburring tool according to Embodiment 1 of the present invention. The schematic sectional drawing which shows the tool for deburring concerning other Embodiment 2 of this invention. CC sectional drawing of FIG. 4 which shows a part of deburring tool which concerns on other Embodiment 2 of this invention. The schematic sectional drawing which shows the deburring method using the deburring tool which concerns on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,21 Deburring tool 2,21 Opening part 3,23 Cylindrical body 4 Screw 5,25 Deburring member 5a, 25a Support piece 5b, 25b Deburring blade 6, 26 Press member 6a, 26a Wide part 6b, 26b Elongated portion 7, 27 Operation member 8a, 8b, 8c Pin 9, 31 Spring 10 Operation lever 11 Intermediate lever 12 Control lever 13, 28 Relay body 13a Recess 13b Sleeve portion 14, 29 Rotating shaft 15 Workpiece 16 Workpiece Body hole 17 Burr 24 Guide hole 24a Guide groove 25b Deburring blade 25A Inclined surface 30 Operation rod 30a Operation piece 30b Projection piece
d Outer diameter of cylindrical body x Axial direction y Outer circumferential direction

Claims (8)

A deburring tool that removes burrs on the back side generated when drilling a workpiece from the front side,
A cylindrical body having an outer diameter that can pass through the inside of a hole previously drilled in the workpiece, and at least one end side in the axial direction is opened, and provided inside the opening of the cylindrical body. Deburring member that expands in the outer circumferential direction and can rotate integrally with the cylindrical body, and is movable in the axial direction so as to press the deburring member provided in the cylindrical body and expand in the outer circumferential direction A pressing member, and an operation member that is provided on the cylindrical body and that can operate the axial movement of the pressing member from the outside of the cylindrical body,
A deburring tool characterized by that. When the pressing member is operated by the operation member and rises in the axial direction, the pressing member has a shape that presses the deburring member and widens in the outer circumferential direction.
The deburring tool according to claim 1. When the pressing member is operated by the operating member and descends in the axial direction, the depressing member has a shape that presses the deburring member and widens in the outer circumferential direction.
The deburring tool according to claim 1. The deburring member is configured to be replaceable according to an inner diameter of a hole drilled in the workpiece.
The deburring tool according to any one of claims 1 to 3, wherein the deburring tool is provided. A deburring method for removing burrs on the back surface generated during drilling of a workpiece from the front side,
A cylindrical body having at least one end in the axial direction opened with respect to a previously drilled body is passed from the surface of the hole toward the back surface side with the opening at the bottom, and the opening of the cylindrical body is When the back surface of the hole is substantially reached, the deburring member provided inside the opening is expanded in the outer peripheral direction of the opening and then rotated integrally with the cylindrical body, and the deburring member Remove burrs generated on the back of the workpiece,
A deburring method characterized by that. When the opening of the cylindrical body substantially reaches the back surface of the hole, the deburring member is spread radially in the outer peripheral direction of the opening, and then rotated integrally with the cylindrical body to remove the deburring. Removing burrs generated on the back surface of the workpiece by a member;
The deburring method according to claim 5, wherein: When the opening of the cylindrical body substantially reaches the back surface of the hole, the pressing member provided inside the cylindrical body is raised in the axial direction of the cylindrical body to press the deburring member, This spreads the deburring member in the outer peripheral direction of the opening,
The deburring method according to claim 5 or 6, wherein the deburring method is performed. When the opening of the cylindrical body substantially reaches the back surface of the hole, the pressing member provided inside the cylindrical body is lowered in the axial direction of the cylindrical body to press the deburring member, This spreads the deburring member in the outer peripheral direction of the opening,
The deburring method according to claim 5 or 6, wherein the deburring method is performed.

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