JP4233198B2 - Precision dressing equipment for grinding wheels - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dressing device that precisely finishes the surface of a grinder grindstone.
[0002]
[Prior art]
As shown in FIG. 8, the surface finish of the grinder wheel for grinding the teeth of the gears is such that the grinder wheel 100 is rotated and the diamond dresser 101 is moved in the XY direction while moving the diamond dresser 101 in the XY direction. I try to dress the surface.
[0003]
As a dressing apparatus incorporating the dresser 101, as shown in FIG. 9A, a first moving body 104 is movably engaged with a base 102 via an X-axis direction rail 103. 104, the second moving body 106 having the dresser 101 attached thereto is movably engaged with the Y-axis direction rail 105, and the first moving body 104 is moved through the ball screw mechanism by driving the X-axis motor 107. As the second moving body 106, a structure in which a Y-axis motor 108 is driven and moved via a ball screw mechanism is known.
[0004]
Further, as shown in FIG. 9B, the X-axis motor 107 and the Y-axis motor 108 are arranged on the same surface side, and the transmission of the driving force between the X-axis motor 107 and the first moving body is transmitted to the helical gear mechanism 109. It is also possible to use a structure using a worm gear mechanism, and further to use a worm gear mechanism instead of a helical gear mechanism.
[0005]
[Problems to be solved by the invention]
A relatively large installation space is required for both the X-axis motor and the Y-axis motor. If such motors are arranged on different side surfaces as shown in FIG. 9A, the space of the dressing device itself is increased.
[0006]
On the other hand, if the direction of power transmission through the gear is changed as shown in FIG. 9 (b), it is advantageous in terms of installation space, but the shifting of the gear pitch becomes 1 to 1.5 μm and is ground. It is transferred to the surface of the grinding wheel 100.
[0007]
In addition, in the conventional precision dressing device, each moving body and the ball screw mechanism are exposed to the outside, so that abrasive grains enter the device and adhere to the ball screw mechanism and the gear and cause damage. It has become.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a precision dressing device for a grinder grindstone that moves the dresser in the X-axis direction and the Y-axis direction to dress the surface of the grinder grindstone. A first moving body that moves, a second moving body that is supported by the first moving body and moves in the Y-axis direction, and a dresser unit that is attached to the second moving body, and moves the first moving body The X-axis motor to be moved and the Y-axis motor to move the second moving body are arranged on the same side of the precision dressing device, and the second moving body is crossed to the third moving body that moves in the X-axis direction by the Y-axis motor. The cross roller guide mechanism was engaged through a roller guide mechanism, and the cross roller guide mechanism was disposed at an angle of less than 45 °, preferably 20 ° to 30 ° with respect to the X-axis direction.
[0009]
As for the cross roller guide mechanism, not only between the second moving body and the third moving body, but also between the first moving body and the apparatus main body, and between the first moving body and the second moving body. Can also be used.
[0010]
In addition, it is preferable that the dresser unit passes through a shutter member, and the motor is disposed on a side surface via a cylindrical member. By doing in this way, it can prevent effectively that an abrasive grain etc. penetrate | invade from the exterior inside an apparatus.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a front view showing the inside of the precision dressing apparatus according to the present invention, FIG. 2 is a top view showing the inside of the precision dressing apparatus, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. AA direction enlarged view, FIG. 5 is a BB direction enlarged view of FIG.
[0012]
A first moving body 2 is engaged in a box-shaped device main body 1 through a pair of cross roller guide mechanisms 3 and 4 so as to be movable in the X-axis direction. The cross roller guide mechanisms 3 and 4 are guide members 3a and 4a fixed to the apparatus main body 1 side, guide members 3b and 4b fixed to the first moving body 2 side, and rollers 3c held between the guide members. 4c.
[0013]
Further, openings 5 and 6 are formed on one side surface of the apparatus main body 1, and a cylindrical member 7 is attached to the outside of the lower opening 5, and the X-axis motor 8 is closely fixed to the cylindrical member 7. A cylindrical member 9 is slidably fitted in the upper opening 6, and a Y-axis motor 10 is closely fixed to the cylindrical member 9.
[0014]
An opening 11 is formed on the other side of the apparatus body 1 at the same height as the opening 5. The opening 11 is closed with a cap 12, and the cap 12 and the opening 5 are interposed between the cap 12 and the opening 5. A ball screw 13 is rotatably installed and connected to the drive shaft of the X-axis motor 8 via a joint 14.
[0015]
Stopper rubbers 15 and 16 through which the ball screw 13 is inserted are provided on the inner end surface of the cap 12 and the inner end surface of the opening 5, and a nut member 17 is screwed into the ball screw 13. One moving body 2 is connected.
[0016]
On the first moving body 2, a second moving body 20 is engaged via a pair of cross roller guide mechanisms 18 and 19 so as to be movable in the Y-axis direction. The cross roller guide mechanisms 18 and 19 are held between guide members 18a and 19a fixed to the first moving body 2 side, guide members 18b and 19b fixed to the second moving body 20 side, and these guide members. It comprises rollers 18c and 19c.
[0017]
A dresser unit 21 is attached to the second moving body 20, and a diamond dresser 22 is attached to the tip of the dresser unit 21 in a replaceable manner.
[0018]
Here, a window portion 23 is formed on the front panel of the apparatus main body 1, and a shutter 24 is fitted into the window portion 23 so as to be slidable in the lateral direction, and the dresser unit 21 is slidably inserted in the shutter 24. There is no penetration.
[0019]
Further, at a position above the second moving body 20, a ball screw 25 is rotatably mounted on the first moving body 2 in the X-axis direction, and one end of the ball screw 25 is jointed to the drive shaft of the Y-axis motor 10. 26 is connected.
[0020]
Further, an upper plate 27 (see FIG. 5) is provided at the upper end of the first moving body 2, and a third moving body 30 is provided on the lower surface of the upper plate 27 via a pair of cross roller guide mechanisms 28 and 29. It is engaged so as to be movable in the X-axis direction. The cross roller guide mechanisms 28 and 29 are held between guide members 28a and 29a fixed to the first moving body 2 side, guide members 28b and 29b fixed to the third moving body 30 side, and these guide members. It comprises rollers 28c and 29c.
[0021]
A nut member 31 that is screwed into the ball screw 25 is coupled to the third moving body 30, and the third moving body 30 and the second moving body 20 are engaged via a pair of cross roller guide mechanisms 32 and 33. Match.
[0022]
The cross roller guide mechanisms 32 and 33 are inclined at an angle of less than 45 ° with respect to the X-axis direction. Specifically, an example inclined by 25 ° is used as an example. Similarly to the above, the cross roller guide mechanisms 32 and 33 are guide members 32a and 33a fixed to the second moving body 20 side, guide members 32b and 33b fixed to the third moving body 30 side, and between these guide members. Consists of rollers that are held.
[0023]
As described above, by driving the X-axis motor 8, the nut member 17 is screwed in the X-axis direction between the stopper rubbers 15 and 16, and the first moving body 2 connected to the nut member 17 is also the cross roller guide mechanism. It moves in the X-axis direction along 3 and 4.
[0024]
When the first moving body 2 moves in the X-axis direction (left direction in FIG. 1), the ball screw 25 and the Y-axis motor 10 also move in the X-axis direction as shown in FIG. Note that the cylindrical member 9 holding the Y-axis motor 10 also slides in the X-axis direction. Then, when the first moving body 2 moves in the X-axis direction, the second moving body 20 and the dresser unit 21 engaged on the first moving body 2 also move in the X-axis direction.
[0025]
On the other hand, when the Y-axis motor 10 is driven, the nut member 31 and the third moving body 30 to which the nut member 31 is coupled move in the X-axis direction via the cross roller guide mechanisms 28 and 29.
[0026]
When the third moving body 30 moves in the X axis direction, for example, in the right direction in FIG. 7, the guide members 32b and 33b fixed to the third moving body 30 constituting the cross roller guide mechanisms 32 and 33 are moved in the right direction. Move to. When the guide members 32b and 33b move, the second moving body 20 is pushed forward along the cross roller guide mechanisms 28 and 29 together with the guide members 32a and 33a (Y-axis direction).
[0027]
By driving the X-axis motor 8 and the Y-axis motor 10 in this way, the dress unit 21 moves in the X-axis direction, the Y-axis direction, and a direction in which these directions are combined, and a predetermined dress is obtained by the movement. Apply to grinding wheel.
[0028]
【The invention's effect】
As described above, according to the present invention, the X-axis motor and the Y-axis motor are converted to the same side surface of the apparatus by converting the driving force in the X-axis direction into the driving force in the Y-axis direction via the cross roller guide mechanism. It is possible to reduce the size of the dressing device, and no power is transmitted via the gear, preventing transfer of gear pitches and transfer of undulation caused by gear accuracy. be able to.
[0029]
In addition, since no gap is generated between the dress unit or motor and the apparatus main body via the shutter member or the cylindrical member, it is possible to effectively prevent abrasive grains and the like from entering the apparatus.
[Brief description of the drawings]
FIG. 1 is a front view showing the inside of a precision dressing apparatus according to the present invention. FIG. 2 is a top view showing the inside of the precision dressing apparatus. FIG. 3 is an enlarged view of a main part of FIG. FIG. 5 is an enlarged view of the BB direction of FIG. 1. FIG. 6 is a view similar to FIG. 1 illustrating the movement of the dresser in the X axis direction. FIG. 8 is a view similar to FIG. 2 illustrating the movement. FIG. 8 is a view showing a state where the grinder is dressed. FIGS. 9A and 9B are perspective views of a conventional precision dressing apparatus. ]
DESCRIPTION OF SYMBOLS 1 ... Apparatus main body, 2 ... 1st moving body, 3, 4 ... Cross roller guide mechanism, 3a, 4a ... Guide member fixed to apparatus main body side, 3b, 4b ... Guide member fixed to 1st moving body side, 3c, 4c: rollers held between guide members, 5, 6, 11 ... openings, 7, 9 ... cylindrical members, 8 ... X-axis motor, 10 ... Y-axis motor, 12 ... cap, 13 ... ball screw, DESCRIPTION OF SYMBOLS 14 ... Joint, 15, 16 ... Stopper rubber, 17 ... Nut member, 18, 19 ... Cross roller guide mechanism, 18a, 19a ... Guide member fixed to the 1st moving body side, 18b, 19b ... Fixed to the 2nd moving body side Guide member, 18c, 19c ... Roller held between guide members, 20 ... Second moving body, 21 ... Dresser unit, 22 ... Diamond dresser, 23 ... Window, 24 ... Shutter, 25 ... Screw screw, 26 ... joint, 17 ... upper plate, 28, 29 ... cross roller guide mechanism, 28a, 29a ... guide member fixed to the first moving body side, 28b, 29b ... guide member fixed to the third moving body side, 28c, 29c: Roller held between guide members, 30: Third moving body, 31: Nut member, 32, 33: Cross roller guide mechanism, 32a, 33a: Guide member fixed to the second moving body side, 32b 33b are guide members fixed to the third moving body side.

Claims (4)

In a precision dressing device for a grinder grindstone that moves the dresser in the X-axis direction and the Y-axis direction to dress the surface of the grinder grindstone, the precision dressing device includes a first moving body that moves in the X-axis direction, and the first moving body. A second moving body that is supported by the moving body and moves in the Y-axis direction, and a dresser unit attached to the second moving body, moves the X-axis motor and the second moving body that move the first moving body. The Y-axis motor is disposed on the same side of the precision dressing device, and the second moving body is engaged with a third moving body that moves in the X-axis direction by the Y-axis motor via a cross roller guide mechanism. This cross roller guide mechanism is disposed at an acute angle with respect to the X-axis direction. 2. The precision dressing device for a grinder grindstone according to claim 1, wherein the engagement between the first moving body and the apparatus main body and the engagement between the first moving body and the second moving body are also performed via a cross roller guide mechanism. A precision dressing device for grinding wheels. 2. The precision dressing device for a grinder grindstone according to claim 1, wherein a window portion is formed in the device body, a slidable shutter is attached to the window portion, and the dresser unit passes through the shutter. A precision dressing device for grinder grinding wheels characterized by The precision dressing device for a grinder grindstone according to claim 1, wherein openings for attaching an X-axis motor and a Y-axis motor are formed on one side surface of the device body, and a cylindrical member is interposed in these openings. A precision dressing device for a grinder, characterized in that an X-axis motor and a Y-axis motor are held in a sealed state.

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