JP4714284B2 - Cutting equipment - Google Patents

Description

  The present invention relates to a cutting apparatus using a drill tool having a conical blade surface.

  As this type of conventional cutting tools, for example, an end mill device such as that described in Japanese Patent Application Laid-Open No. 2004-50348 can be cited.

JP 2004-50348 A

  By the way, the above-mentioned conventional one (related to the prior art) is such that a predetermined plane is cut by moving a tool such as an end mill in the X-Y direction. That is, the object is to cut one plane efficiently. On the other hand, the present invention relates to an apparatus that can efficiently remove burrs and the like generated at the end of the workpiece, and particularly removes burrs generated on the workpiece end surface having a complicated shape. It is an object (problem) of the present invention to provide a cutting apparatus that can efficiently perform the above.

In order to solve the above problems, the following measures are taken in the present invention. That is, in the first aspect of the invention described in claim 1, regarding the cutting device, a driving device comprising an air motor driven by high pressure air or an electric motor driven by electricity, and the same shaft as the driving device. A connecting device that is provided on the line and serves to transmit the rotational driving force from the driving device to the tool, and a connecting device that is provided continuously with the connecting device and that grips or opens the tool. A clamping device that is made to perform with air, and a floating device that integrally holds the clamping device, the coupling device, and the driving device, and that is mainly formed with a floating piston that operates with high-pressure air, The clamp device is driven by high-pressure air, is movable in the vertical direction of the same axis as the drive device, and the inner diameter side is a tapered surface. A ring-shaped inner diameter taper ring and a conical taper surface formed so as to be opposed to the inner diameter side surface of the inner diameter taper ring on the outer side, and the tool inside the cylindrical shape A collet holder that grips the shaft portion of the tool when the inner diameter of the housing portion is narrowed when the shaft portion is moved below the shaft, an inner diameter side surface of the inner diameter taper ring, and the collet holder. A plurality of steel balls provided so as to be rotatable by being sandwiched between the formed tapered surfaces, and when the inner diameter taper ring is lowered by high-pressure air, the collet holder is interposed via the steel balls. When the inner diameter taper ring is lifted by high-pressure air, the collet holder is lifted to release the tool. It was decided to adopt a configuration in which as that.

Next, a second invention which is the invention described in claim 2 will be described. The basic point of this is the same as that of the first invention. That is, in the present invention, with respect to a cutting device according to claim 1, wherein said floating device is consisted of a tabular form, the floating plate and at its central portion formed to have the drive apparatus A configuration is adopted in which a plurality of floating pistons that support the floating plate and are arranged at equal intervals on a circumference centered on the drive device are provided .

Next, a third invention as claimed in claim 3 will be described. This also has the same basic points as the first invention or the second invention. That is, in the present invention, the cutting device according to claim 1 or 2 is accommodated in the housing of the clamp device and is movable in the axial direction, and the inner diameter taper ring is held therein. A cylindrical cylinder, two air chambers for introducing high-pressure air to move the cylinder upward and downward in the axial direction, and a bearing fixed in the cylinder and supporting the collet holder in the axial direction Further, the collet holder is configured to have a tapered shape in which a lower portion inside a cylindrical shape that accommodates the shaft portion of the tool extends downward .

  The first invention as claimed in claim 1 will be described. According to the present invention, by adopting the above-described configuration, it becomes possible to efficiently perform the processing of the end face of the workpiece, particularly the deburring operation. In addition, the drive device driven by high-pressure air can be operated by using a high-pressure air system that has already been installed in factories and the like. As a result, the operation of the present apparatus can be performed efficiently. Thus, in the case where the operation of each part is performed with high-pressure air, the amount of heat generated based on the operation of the present apparatus can be suppressed to a minimum value. As a result, temperature management in the factory can be facilitated, and as a result, safety in the factory can be improved.

  Next, a second invention which is the invention described in claim 2 will be described. This is basically the same as that of the first invention. In addition to these, in the present invention, the floating device that plays the role of holding the tool is composed of a disk-shaped floating plate and a plurality of air cylinders that support the floating plate. When an overload is input to the tool during operation, this overload or the like can be released at the floating device. As a result, it is possible to prevent damage to the tool (blade).

  Next, a third invention as claimed in claim 3 will be described. This is also basically the same as that described in claim 1 or claim 2. In addition to these, in the present invention, the clamping device for holding the tool is controlled by an operation mechanism mainly formed of an air cylinder, and includes two tapered surfaces and a steel provided therebetween. Since it is made of a sphere, the holding force (gripping force) of the tool can be exerted powerfully, and the tool removal work can be easily performed by the operation of the air cylinder. .

It is a longitudinal cross-sectional view which shows the whole structure of this invention. It is a longitudinal cross-sectional view which shows the whole structure around the floating apparatus concerning this invention. It is a top view which shows the structure around the floating apparatus concerning this invention, especially a floating plate. It is a longitudinal cross-sectional view which shows the structure around the clamp apparatus concerning this invention, and its clamp state. It is a longitudinal cross-sectional view which shows the structure around the clamp apparatus concerning this invention, and the state at the time of the clamp release. It is a longitudinal cross-sectional view which shows the operation state of this invention.

  An embodiment for carrying out the present invention will be described with reference to FIGS. As shown in FIG. 1, the present embodiment relates to a cutting apparatus that mainly forms a deburring process or the like of a workpiece end surface. The specific configuration includes a driving device 5 mainly formed of an air motor 55 driven by high-pressure air, a coupling device 3 that finally serves to transmit power from the driving device 5 to the tool 9, The clamping device 1 that transmits the power from the driving device 5 to the tool 9 via the connecting device 3 and appropriately holds the tool 9, and the clamping device 1, the connecting device 3, the driving device 5 and the like are integrated. It is basically composed of a floating device 2 to be held and an attachment device 6 that serves to attach the floating device 2 to the arm 7 or the like of the machine. In addition, in what consists of such a structure, regarding the said air motor 55, it is also considered to employ | adopt an electric motor instead.

  In such a basic configuration, the air motor 55 forming the driving device 5 has a cylindrical shape as shown in FIGS. 1 and 2, and is located at the lower end of the center line. Is provided such that the rotating shaft 555 protrudes downward. A cylindrical air motor 55 forming such a drive device 5 is attached to a floating plate 21 described later via a support device 51 made of bolts, nuts, etc., as shown in FIG. 1 or FIG. It is like that. A coupling means 31 having a spline coupling means or the like is provided at the rotating shaft 555, and the rotational driving force from the driving apparatus 5 is applied to the tool by the coupling device 3 mainly including the coupling means 31. 9 is to be transmitted. In addition, ball bearings 32 are provided in two stages on the upper end side of the coupling means 31 (see FIG. 1), whereby the coupling means 31 that forms the main part of the coupling device 3 is provided. It is supposed to be retained. The entire connecting device 3 is attached to the floating plate 21 of the floating device 2 with a plurality of connecting bolts 35 or the like via a cylindrical case 33 forming the connecting device 3. (See FIG. 2 and FIG. 3). For example, as shown in FIG. 3, a plurality of the connecting bolts 35 are provided at equal intervals on the circumference.

  Next, the configuration and the like of the floating device 2 will be described. For example, as shown in FIG. 1 or FIG. 2, the connecting device 3 and the clamping device 1 are integrated with each other and are attached to the floating plate 21 via the connecting bolt 35. Is. Such a floating plate 21 is supported by a plurality of floating absorbers 25. The floating absorber 25 is formed on the basis of a floating piston 251 that operates by introducing high-pressure air (see FIG. 2). A plurality of such floating absorbers 25 are provided at equal intervals at a base 29 having a disk shape, for example, as shown in FIG. Further, such a disk-shaped base 29 is finally attached to the arm 7 of the machine or the like via the attachment device 6 as shown in FIGS. 1 to 3, for example. .

  Next, a description will be given of the clamping device 1 that is provided at the lower portion of the coupling means 31 and is mainly formed with the taper collet 11. This is formed on the basis of a taper collet 11, for example, as shown in FIG. A collet holder 15 having an umbrella shape as a whole is provided outside the tapered collet 11. Furthermore, bearings 12 are provided below the upper tapered surface 152 and the cylindrical portion 155 in the form of an umbrella of such a collet holder 15 to hold (support) the entire collet holder 15. It is what is supposed to do. By the vertical operation of the collet holder 15, the tapered portion 115 formed at the lower end portion of the tapered collet 11 in surface contact with the inner diameter tapered surface 151 of the collet holder 15 is contracted or released, and the taper The tool 9 held on the inner diameter side of the collet 11 is held or released. In the state where the tool 9 is held, a rotational driving force is transmitted to the tool 9.

  The collet holder 15 provided outside the taper collet 11 as described above has an umbrella shape. That is, the collet holder 15 includes a hollow cylindrical portion 155 provided on the outer side of the tapered collet 11, and an upper tapered surface 152 having an umbrella shape provided on the upper end side of the cylindrical portion 155. And an inner diameter tapered surface 151 provided on the inner surface side of the hollow portion at the lower end portion of the cylindrical portion 155. A plurality of steel balls 16 are provided at the upper tapered surface 152 of the collet holder 15 having such a configuration, and an inner diameter taper ring 18 is provided with the steel balls 16 sandwiched therebetween. It has become. A web washer 13 is provided at the upper end surface of the inner diameter taper ring 18, and the inner diameter taper ring 18 is accommodated in the cylinder 17 via the web washer 13 (see FIG. 4).

  For example, as shown in FIG. 4, air chambers 17A and 17B are respectively provided on the outside of the cylinder 17, and the cylinder 17 is introduced by introducing high-pressure air into the chambers 17A and 17B. It can move up and down. As the cylinder 17 moves up and down, the collet holder 15 is pressed downward through the inner diameter tapered ring 18 and the steel ball 16 or the pressing force is removed. For example, when the downward pressing force is generated, the collet holder 15 is pressed downward. As a result, a downward force is transmitted to the tapered portion 115 of the tapered collet 11 that engages with the inner diameter tapered surface 151 of the collet holder 15, and the tapered portion 115 is depressed. As a result, the shaft portion 91 of the tool 9 is held (gripped) at the tapered collet 11.

  On the other hand, as shown in FIG. 5, for example, when high-pressure air is introduced into the lower air chamber 17B, the cylinder 17 moves upward. As a result, a downward load is not input to the collet holder 15. Accordingly, no force is transmitted to the tapered portion 115 of the taper collet 11, and the gripping force (holding force) of the tool 9 is not generated. As shown in FIG. 4 or FIG. 5, a housing 19 is provided outside the cylinder 17 having such a configuration. (Refer to FIG. 1).

  Next, the operation mode of the embodiment having such a configuration will be described with reference to FIG. That is, in the present embodiment, the rotational force is transmitted to the tool 9 when the air motor 55 is operated. In such a state, the workpiece is appropriately cut by bringing the blade surface of the tool 9 into contact with the workpiece. In the present embodiment, the workpiece end face is deburred and the like by the blade face of the tool 9. During such a machining operation, the entire cutting apparatus can swing around the lower end portion of the rotary shaft 555 of the air motor 55 as a fulcrum, as shown by the two-dot chain line in FIG. Thus, it is possible to appropriately cope with the unevenness of the workpiece processing surface by such a swinging motion. By such a swinging motion of the entire cutting apparatus, a deburring operation or the like of the workpiece machining end surface corresponding to a change in the workpiece machining surface is appropriately advanced.

  As described above, in the present embodiment, the various operations including the rotational drive of the tool, that is, the rotational motion of the motor that drives the tool, are all performed by the high-pressure air already spread throughout the factory. Since it was made to carry out, it becomes unnecessary to employ | adopt an electric power apparatus, and the emitted-heat amount produced by the action | operation of these electric power apparatuses can be decreased as much as possible. As a result, temperature management in the factory can be facilitated, and safety in the factory can be improved.

DESCRIPTION OF SYMBOLS 1 Clamp apparatus 11 Tapered collet 115 Tapered part 12 Bearing 13 Web washer 15 Collet holder 151 Inner diameter taper surface 152 Upper taper surface 155 Cylindrical part 16 Steel ball 17 Cylinder 17A Air chamber 17B Air chamber 18 Inner diameter taper ring 181 Inner diameter taper surface 19 Housing DESCRIPTION OF SYMBOLS 2 Floating device 21 Floating plate 25 Floating absorber 251 Floating piston 29 Base 3 Connecting device 31 Coupling means 32 Ball bearing 35 Connecting bolt 5 Drive device 51 Support device 55 Air motor 555 Rotating shaft 6 Mounting device 7 Arm 9 Tool 91 Shaft

Claims (3)

A driving device composed of an air motor driven by high-pressure air or an electric motor driven by electricity, and provided on the same axis as the driving device, transmits the rotational driving force from the driving device to the tool. A connecting device that plays a role, a clamping device that is continuously provided in the connecting device and that allows the tool to be gripped or released by high-pressure air, and the clamping device, the connecting device, and the drive And a floating device mainly formed with a floating piston that operates with high-pressure air. The clamp device is driven by high-pressure air and has the same axis as that of the drive device. A ring-shaped inner diameter tapered ring that is movable in the vertical direction and has a tapered surface on the inner diameter side, and the inner diameter tapered ring formed on the outer side of the cylinder. And having a conical tapered surface formed so as to face the inner diameter side surface of the tool, the shaft portion of the tool is housed inside the cylindrical shape, and the inner diameter of the housing portion when moved downward of the shaft A plurality of collet holders that are sandwiched between a collet holder that grips the shaft portion of the tool by narrowing, an inner diameter side surface of the inner diameter taper ring, and a tapered surface formed on the collet holder so as to be rotatable. And when the inner diameter tapering is lowered by high pressure air, the collet holder is pressed downward through the steel ball to hold the tool, and the inner diameter tapering is performed by high pressure air. A cutting device characterized in that when the tool is raised, the tool is released by raising the collet holder . In the cutting device according to claim 1, wherein said floating device is consisted of a tabular morphology, supporting the floating plate is at its center portion formed to have the drive unit, the floating plate be one cutting device being characterized in that as and a plurality of floating pistons disposed at equal intervals form on the circumference around the said drive device. 3. The cutting device according to claim 1, wherein the cylindrical device is accommodated in the housing of the clamp device and is movable in the axial direction, and holds the inner diameter taper ring therein, and a high pressure. Two air chambers for introducing air to move the cylinder upward and downward in the axial direction, and a bearing fixed in the cylinder and supporting the collet holder in the axial direction, and The said collet holder is formed in the taper shape which the downward direction of the cylindrical inside which accommodates the axial part of the said tool spreads toward the downward direction .

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