JP2000024895A - Deburring grinding head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with burrs formed at each direction end face and an inner corner part of a workpiece with simple position control. SOLUTION: A tool holder 3 is rotated around a rotation axis Y to rotate a deburring grinding tool 1 supported to the tool holder 1, on the rotation axis Y of the tool holder 3 and around a rotation axis Z orthogonal to the rotation axis Y. The tool 1 side is therefore rotated successively in all two-dimensional directions at any grinding point, and burrs formed at each direction end face and an inner corner part of a workpiece can be effectively cut off with simple position control without delicate control of the direction and angle of a head H matching with the end face direction of the workpiece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a deburring grinding head.

[0002]

2. Description of the Related Art FIG. 11 shows a conventional deburring grinding head.
As shown in FIG. 12, a conical tool 101 is driven to rotate by a motor 103, as shown in FIG. 12, a spherical tool 105 is driven to rotate by a motor 107, and as shown in FIG.
1 and a tool for rotating a file-type tool 113 by an actuator 115 as shown in FIG. These deburring grinding heads are attached to an NC device, and remove the burrs by moving the work W and the head by the NC.

For example, when a burr B generated on an end face of a work W as shown in FIGS. 11 to 14 is removed, a conventional deburring grinding head is moved by NC so as to follow a trajectory indicated by a chain line L.

However, a conical tool 101 shown in FIG.
In the case of using a head having a spherical tool 105 shown in FIG. 12 or a head having a spherical tool 105 shown in FIG. 12, when the head comes to a position Q of a corner portion (inner corner portion) which is depressed inward as shown in FIG. The inner corner portion P of W and the burrs B in the vicinity thereof cannot be removed. Therefore, in order to remove the burrs B in these areas, the head is moved from the position Q above the workpiece W, Q
It is necessary to perform delicate position control such as approaching the inner corner P of the work W while pulling it up little by little in the direction of 1.
In particular, when a head provided with the spherical tool 105 shown in FIG. 12 is used, even if the vertex O of the spherical tool 105 is pressed against the burr B of the inner corner portion P of the workpiece W by this position control, the rotation of the spherical tool 105 Since the speed becomes zero at the vertex O, the burr B at that portion cannot be sufficiently removed.

A disk type tool 10 shown in FIG.
9 or a file-type tool 113 shown in FIG.
When using a head provided with, the fixed surface of each of the disk-type tool 109 and the file-type tool 113 must be pressed against the burr B generated on the end surface of the work W. In addition, it is necessary to control the direction of the head. In addition, when using a head provided with the file-type tool 113 shown in FIG. 14, the file-type tool 113 must be pressed at a fixed angle against the burr B generated on the end face of the work W. The inclination of the head must also be controlled according to the direction of the end face of W.

[0006]

As described above, since the conventional deburring grinding head has only the function of rotating the tool in one direction or reciprocating the tool, burrs generated in the inner corner portion of the work are removed. There are problems that it is difficult to remove the head and that the direction and inclination of the head must be delicately controlled according to the direction of the end face of the work.

The present invention has been made in view of such a conventional problem, and provides a deburring grinding head capable of coping with burrs generated on end faces in various directions and inner corners of a work by simple position control. The purpose is to do.

[0008]

According to a first aspect of the present invention, there is provided a deburring grinding head according to the present invention, wherein the tool supporting member is driven or oscillated about one rotating shaft, and is supported by the tool supporting member. A deburring grinding tool that is rotationally driven on a rotation axis of the support member and about another rotation axis that intersects the rotation axis at a fixed angle.

According to a second aspect of the present invention, in the deburring grinding head according to the first aspect, the tool is rotated on a rotation axis of the tool support member and about another rotation axis orthogonal to the rotation axis. It is something to do.

In the deburring grinding head according to the first and second aspects of the present invention, the tool supporting member rotates or swings about one rotation axis, and the deburring grinding tool supported by the tool supporting member is a tool supporting member. On the other rotation axis that intersects the rotation axis at a fixed angle with respect to the rotation axis. As a result, the deburring grinding tool can be rotationally driven in two dimensions in all directions at each grinding point, and the tool can be easily operated without having to finely control the direction and angle of the head according to the direction of the end face of the work. Burr generated on the end face in each direction of the work and the inner corner portion can be scraped off by the proper position control.

According to a third aspect of the present invention, there is provided a deburring grinding head according to the first aspect, wherein the tool intersects the rotating shaft of the tool supporting member at an angle that is not perpendicular to the rotating shaft. The tool is driven to rotate about a rotation axis, whereby the edge portion of the tool can be brought into contact with the workpiece, and even fine burrs can be effectively removed.

According to a fourth aspect of the present invention, there is provided a deburring grinding head comprising:
A tool support member is connected to the output shaft of the drive motor, a fixed bevel gear is provided so as to surround the rotation axis of the tool support member, and the shaft gear having a rotation axis orthogonal to the rotation axis of the tool support member is provided. A rotary shaft rotatably supported in a tool support member, meshes a fixed bevel gear formed at an axial end of the shaft gear with the fixed bevel gear, and intersects the tool support member at an angle with the rotary shaft. A tool train for transmitting the rotational force of the shaft gear to the tool support shaft is provided in the tool support member, and a disk-shaped deburring grinding tool is mounted on the tool support shaft. It is.

In the deburring grinding tool according to the fourth aspect of the present invention, the shaft gear rotates together with the tool support member by driving the tool support member about the rotation axis thereof by the drive motor. When the provided bevel gear meshes with the fixed bevel gear, it also rotates around its own rotation axis. This rotation about its own rotation axis is transmitted to the tool support shaft by a gear train provided in the tool support member. As a result, the deburring grinding tool attached to the tool support shaft rotates around its rotation axis together with the tool support member, and at the same time, rotates about the tool support shaft. As a result, the deburring grinding tool can be rotationally driven in all two-dimensional directions at each grinding point with only the driving force of one drive motor. Therefore, even if the head direction and angle are not delicately controlled in accordance with the direction of the end face of the work, burr generated on the end face in each direction of the work and the inner corner can be reliably removed by simple position control. Since only one drive motor is provided, the size and weight of the head can be reduced.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a first embodiment of the present invention, and FIG. 2 is a side view thereof. The deburring grinding head H of this embodiment supports the deburring grinding tool 1 and the tool 1 so as to be rotatable on one rotation axis Y about another rotation axis Z orthogonal to the Y axis. It comprises a tool holder 3 and a casing 7 which supports the tool holder 3 so as to be rotatable about a rotation axis Y and has therein a tool 1 and a motor 5 serving as a drive source of the tool holder 3.

Output shaft 9 of motor 5 inside casing 7
Is a holder shaft 1 suspended below the tool holder 3
1 are connected in series on the rotation axis Y. On the upper surface of the casing 7, a fixed bevel gear 1 is provided so as to surround the holder shaft 11.
3 are provided.

Inside the tool holder 3, a shaft gear 15
Are supported so as to be rotatable around another rotation axis X orthogonal to the rotation axis Y. The bevel gear 17 provided at one end of the shaft gear 15 meshes with the fixed bevel gear 13 on the casing 7 so that the rotation of the tool holder 3 causes the rotation of the shaft gear 15. Shaft gear 15
Is provided at the other end with a tool shaft 23 via an intermediate gear 21 provided on the upper end thereof.
The rotation is transmitted to a gear 25 provided at the end.

The tool shaft 23 is supported so as to be rotatable around another rotation axis Z orthogonal to the rotation axis Y. The tool shaft 23 has the disk-shaped tool 1 on the rotation axis Y and the Y axis. It is mounted at a position where it can rotate about a rotation axis Z perpendicular to the axis. The tool 1 employs a grinding wheel such as a diamond abrasive, an elastic wheel, a wheel-type polishing brush, or the like.

The deburring grinding head H constructed as described above is attached to a deburring device 27 as shown in FIGS. FIG. 3 is a front view of the deburring device 27, and FIG. 4 is a right side view thereof.

The deburring apparatus 27 mainly includes a material mounting area 29 for mounting a workpiece W processed by another sheet metal processing apparatus and a product mounting area 31 for mounting a product P on which deburring has been completed. And the material placing area 29 and the product placing area 31
In one direction (A direction in FIG. 4).
And a direction perpendicular to the material moving direction (A direction) between the material placing area 29 and the product placing area 31 (the B direction perpendicular to the paper surface in FIG. 4). And a head movement positioning device 35 capable of moving and positioning the deburring grinding head H in the vertical direction (C direction).
It is composed of

The head movement positioning device 35 is provided between the material placing area 29 and the product placing area 31, a frame 37 erected from the floor surface FL, and provided at the upper end of the frame 37 in the direction B. B-axis guide rail 3 extending horizontally
9, a B-axis moving body 41 movably engaged with the B-axis guide rail 39 in the B direction, a B-axis feed screw 43 screwed to the B-axis moving body 41, and a B-axis feed screw 43. One end of the B-axis guide rail 39 (see FIG.
B-axis servo motor 45 provided at the left end of the
A tool carrier 49 attached to the B-axis moving body 41 via a bracket 47, a C-axis feed screw 51 rotatably supported by the tool carrier 49, and a tool for rotating and driving the C-axis feed screw 51. The C-axis servomotor 53 provided at the lower end of the carrier 49 is screwed with the C-axis feed screw 51 so that the C-axis feed screw 51 can be moved and positioned in the vertical direction (C direction) by being rotationally driven. It comprises a C-axis carriage 55 supported by a tool carrier 49, and the deburring grinding head H is mounted on the C-axis carriage 55.

The material loading / unloading device 33 includes two rod members 59 connected to the upper part of the B-axis guide rail 39 by bolts 57 so as to be adjustable in height.
One end of a beam portion 61 is connected to both ends of the frame 63L, and an inverted L-shaped left and right (in FIG. 3) frame 63L extending in the A direction.
63R and the floor surface FL.
Left and right columns 65L, 65R connected to the other ends of the respective beam portions 61, 3L and 63R, and frames 63L, 6R.
Two rods 67F, 67R (front and rear in FIG. 4) whose both ends are fixed to each beam 61 of the 3R are provided.

The material loading / unloading device 33 is further suspended from these rods 67F and 67R, and
An A-axis guide rail 69 extending substantially in the A direction to a position above the material placing area 29 at a substantially central portion of the L and 63R, and is movably engaged with the A-axis guide rail 69. An A-axis moving body 71, an A-axis feed screw 73 rotatably screwed to the A-axis moving body 71, and an end of an A-axis guide rail 69 for rotating the A-axis feed screw 73 (FIG. 4). A-axis servomotor 7 provided at the right end)
5, a frame 77 attached to the lower part of the A-axis moving body 71, and a plurality of adsorption means 79 attached to the lower part of the frame 77 and adsorbing and holding the plate material downward.

Incidentally, a vacuum cup, an electromagnet or the like is employed as the suction means 79. Also, the A-axis servo motor 7
5, the B-axis servomotor 45 and the C-axis servomotor 53 are all controlled by an NC control device (not shown).

A lifter table 81 on which a workpiece W processed by another sheet metal processing apparatus is mounted in the material mounting area 29, and a lifter on which the deburred finished product P is mounted in the product mounting area 31. Each of the tables 83 is provided. Known lifter tables 81 and 83 whose height can be adjusted by a cylinder (not shown) are employed.

Next, the burrs B generated on the lower end face of the work W as shown in FIG. 5A are removed by the deburring grinding head H of the present embodiment attached to the deburring device 27 having the above-described configuration. The operation in the case of performing will be described. First, the material loading / unloading device 33 shown in FIG.
The workpiece W is positioned above the work W loaded thereon, and in this state, the lifter table 81 is lifted and the work W is sucked by the suction means 79.

Next, the workpiece W is moved in the direction A by the material loading / unloading device 33, and the head H is moved in the direction B by the head moving / positioning device 35, as shown in FIG.
As shown in (2), the workpiece W is positioned such that the deburring start point P0 of the workpiece W is located on the extension of the rotation axis Y of the tool holder 3.

On the other hand, when the drive motor 5 is driven, the rotational force of the motor 5 is transmitted from the output shaft 9 to the holder shaft 11 connected to the output shaft 9 in series, and the tool holder 3
Rotate around. When the tool holder 3 rotates, the bevel gear 17 of the tool holder 3 meshing with the fixed bevel gear 13 on the casing 7 also rotates about the rotation axis X orthogonal to the rotation axis Y. The rotation of the bevel gear 17 is sequentially transmitted to the shaft gear 15, the gear 19, the intermediate gear 21, the gear 25, and the tool shaft 23.
Above and rotate about a rotation axis Z orthogonal to the Y axis. In this way, the tool 1 combines two rotation axes (Y,
Z) are simultaneously rotated. As a result, as shown in FIG. 5A, the rotational afterimage of the tool 1 becomes spherical, and the grinding point in contact with the workpiece W is sequentially rotated in all two-dimensional directions at any position of the workpiece W. Become.

Then, after positioning the tool 1 at the deburring start point P0, the C-axis servo motor 53 is driven to move the head H mounted on the tool carrier 49 via the C-axis carriage 55 in the C direction. Moving. At this time, as shown in FIG. 5 (b), the head H on which the tool holder 3 and the tool 1 are rotating moves on the rotation axis Y until the tool 1 is pressed against the lower surface end of the work W by an appropriate force. Is gradually approached to the deburring start point P0. Burr B generated at deburring start point P0
Is pressed against the vertex O of the tool 1, but since the tool 1 rotates around another rotation axis Z orthogonal to the rotation axis Y, the vertex O has a sufficient rotation speed. This can be scraped off in contact with the burr B.

Next, as shown in FIG. 6, while the tool 1 of the deburring grinding head H is pressed against the lower surface end of the work W by an appropriate force, a locus indicated by a chain line L is shifted from the deburring start point P0 to the deburring end point P3. The workpiece W is moved in the direction A by the material loading / unloading device 33, and the head H is moved in the direction B by the head moving / positioning device 35. During this time, the deburring grinding head H comes into contact with the lower surface ends of the work W in a plurality of different directions sequentially. However, since the tool holder 3 is rotating, the direction and inclination angle of the head H itself need not be adjusted. The tool 1 is provided with a burr B generated on the lower surface end of the workpiece W in any direction.
Also, there is always a timing to make contact at a right angle so that it can be most effectively removed. Therefore, if the deburring grinding head H is positioned at a position where the tool 1 is pressed against the lower surface end of the work W with an appropriate force, the work W then moves from the deburring start point P0 to the deburring end point P3. By simply controlling the burrs to move along the lower surface edge of the workpiece W, the burrs B generated during this time can be effectively scraped off. In particular, even at the inner corner portion P2 of the work W, the above-described deburring start point P0 Deburring can be performed by the same operation as described above.

The head H that has been deburred is controlled and moved by the head movement positioning device 35, separated from the work W, and returned to a predetermined position.

Lastly, the product P, which has been deburred and has been suctioned by the suction means 79, is controlled to move above the product mounting area 31 by the material loading / unloading device 33, and the product P is lifted from the suction means 79 by the lifter. Release and collect on the table 83.

As described above, in the deburring grinding head H according to the present embodiment, the deburring grinding tool 1 can be sequentially rotated in any two-dimensional directions at any position.
Even if the direction and inclination angle of the head H are not delicately controlled in accordance with the direction of the lower surface edge of the workpiece W, the burr generated on the end face in any direction of the workpiece W or the inner corner portion can be effectively eliminated by simple position control. Can be scraped off. In addition, since both the tool holder 3 and the tool 1 are simultaneously rotated and driven only by the driving force of one motor 5 built in the head H,
The weight and cost of the head H can be reduced, and the control system can be simplified.

Although the motor 5 is built in the casing 7 of the head H as shown in FIG. 1 in the present embodiment, the motor 5 may be installed outside the head H. . Thus, the weight of the head H can be further reduced.

FIG. 7 is a side view of a second embodiment of the present invention. The deburring grinding head H according to the present embodiment is characterized in that the tool 1 is structured to rotate around another rotation axis Z ′ inclined with respect to the rotation axis Y of the tool holder 3. In this case, since the rotation axis Z 'of the tool 1 is inclined with respect to the rotation axis Y of the tool holder 3, the tool W comes into contact with the work W at the edge portion when the tool 1 rotates, so that minute burrs can be effectively removed. Can be.

FIG. 8 is a side view of a third embodiment of the present invention. In the deburring grinding head H of the present embodiment, the tool 1 and the tool holder 3 are connected to separate motors (5, 85).
The structure is such that it is driven to rotate. An electric motor or an air motor is used for each motor. In the figure, the tool 1 is driven to rotate by a tool motor 85 installed above the tool holder 3, and the tool holder 3 is driven to rotate by a motor 5 inside the casing 7. Thus, the tool holder 3 and the tool 1 can be rotated at appropriate speeds.

FIG. 9 is a side view of a fourth embodiment of the present invention. In the deburring grinding head H of the present embodiment, the tool 1 and the casing 7 are rotationally driven by separate motors (85, 87), and the motor 87 serving as a drive source of the casing 7 is installed outside the head H. It is characterized by having a structure. In the figure, the tool 1 is driven to rotate by a tool motor 85 installed above the tool holder 3, and the casing 7 is rotated by transmitting the rotation of an external motor 87 installed outside the head H to the head H via a belt 89. It is a structure to be driven. Thus, the casing 7 and the tool 1 can be rotated at appropriate speeds. Further, since the external motor 87 is provided outside the head H, the weight of the head H can be reduced.

FIG. 10 is a side view of a fifth embodiment of the present invention. The deburring grinding head H according to the present embodiment includes a tool 1 that is rotationally driven by a tool motor 85,
And a casing 7 which is rocked by a rocking mechanism (87, 91, 93). In the figure, the tool 1 has a structure driven to rotate by a tool motor 85 installed on the upper part of the tool holder 3. The external motor 87 rotates a U-shaped crankshaft 91 attached thereto, and this rotation is changed into swing by a crank arm 93, and the casing 7 swings.

In the deburring grinding head H of this embodiment, the tool holder 3 swings around the rotation axis Y by the swing of the casing 7, and the tool 1 is rotated by the swing and the rotation of the tool motor 85. It is possible to scrape off the burrs B generated on the end face in each direction and the inner corner of the work W by simple position control without finely controlling the direction and the inclination angle of the head H in accordance with the direction of the end face of the work W. it can.

[0039]

As described above, according to the first and second aspects of the present invention, each of the workpieces can be easily controlled by simple position control without finely controlling the direction and angle of the head in accordance with the direction of the end face of the workpiece. Burrs generated on the end face in the direction and the inner corner portion can be effectively removed.

According to the third aspect of the present invention, the tool is driven to rotate on the rotation axis of the tool support member and about another rotation axis which intersects the rotation axis at an angle other than a right angle. In addition, the edge portion of the tool can be brought into contact with the workpiece, and even small burrs can be effectively removed.

According to the fourth aspect of the present invention, the deburring grinding tool can be rotationally driven so as to face two-dimensionally all directions at each grinding point only by the driving force of one driving motor, and the direction of the end face of the workpiece can be achieved. Even if the head direction and angle are not delicately controlled in accordance with the requirements, simple position control can reliably remove the burrs generated on the end face in each direction of the work and the inner corners. Since the head is only provided, the size and weight of the head can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of a deburring grinding head according to the present invention.

FIG. 2 is a side view of the deburring grinding head.

FIG. 3 is a front view of a deburring apparatus to which the above-mentioned deburring grinding head is attached.

FIG. 4 is a side view of the deburring device.

FIG. 5 is an explanatory diagram of a deburring operation of the deburring grinding head.

FIG. 6 is a plan view showing the trajectory of the head in the above deburring operation.

FIG. 7 is a side view of a deburring grinding head according to a second embodiment of the present invention.

FIG. 8 is a side view of a deburring grinding head according to a third embodiment of the present invention.

FIG. 9 is a side view of a deburring grinding head according to a fourth embodiment of the present invention.

FIG. 10 is a side view of a deburring grinding head according to a fifth embodiment of the present invention.

FIG. 11 is an explanatory view of Conventional Example 1.

FIG. 12 is an explanatory diagram of Conventional Example 2.

FIG. 13 is an explanatory diagram of Conventional Example 3.

FIG. 14 is an explanatory diagram of Conventional Example 4.

FIG. 15 is a plan view showing a position of a head at an inner corner portion in Conventional Examples 1 and 2.

[Explanation of symbols]

 W Workpiece P Product B Deburr H Deburring grinding head L Locus 1 Tool 3 Tool holder 5 Motor 7 Casing 9 Output shaft 11 Holder shaft 13 Bevel gear 15 Shaft gear 17 Bevel gear 19 Gear 21 Intermediate gear 23 Tool shaft 25 Gear 27 Deburring Device 29 Material loading area 31 Product loading area 33 Material loading / unloading device 35 Head movement positioning device 37 Frame 39 B-axis guide rail 41 B-axis moving body 43 B-axis feed screw 45 B-axis servo motor 47 Bracket 49 Tool carrier 51 C Axial feed screw 53 C-axis servomotor 55 C-axis carriage 57 Bolt 59 Rod member 61 Beam 63L, 63R Frame 65L, 65R Column 67F, 67R Rod 69 A-axis guide rail 71 A-axis moving body 73 A-axis feed screw 75 A-axis Servomotor 7 the frame 79 the suction means 81 lifter table 83 lifter table 85 tool motor 87 outside the motor 89 belt 91 crankshaft 93 crank arm

Claims (4)

[Claims] 1. A tool support member that is driven to rotate or swing about one rotation axis, and is supported by the tool support member and is fixed on the rotation axis of the tool support member and with respect to the rotation axis. And a deburring grinding tool that is driven to rotate about another rotation axis that intersects at an angle. 2. The deburring grinding according to claim 1, wherein the tool is driven to rotate on a rotation axis of the tool support member and about another rotation axis orthogonal to the rotation axis. head. 3. The tool according to claim 1, wherein the tool is driven to rotate on a rotation axis of the tool support member and about another rotation axis that intersects the rotation axis at an angle other than a right angle. A deburring grinding head according to 1. 4. A tool support member is connected to an output shaft of a drive motor, a fixed bevel gear is provided so as to surround a rotation axis of the tool support member, and a rotation axis orthogonal to the rotation axis of the tool support member is provided. The tool has a shaft gear rotatably supported in the tool support member, meshes a bevel gear formed at an axial end portion of the shaft gear with the fixed bevel gear, and adjusts the tool support member to a certain angle with its rotation axis. A tool support shaft having a rotating shaft that intersects is attached, a gear train for transmitting the rotational force of the shaft gear to the tool support shaft is provided in the tool support member, and a disk-shaped deburring grinding is provided on the tool support shaft. Deburring grinding head with a tool attached.