JP2517518Y2 - Swivel rotary dresser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rotary type rotary dresser in which a dresser wheel rotates and swings, and in particular, a rotary type mounted on a forming grinder having a grinding wheel capable of controlling two axes. Regarding rotary dresser.

(Prior Art) For example, the shaping of a grinding wheel in a gear forming grinding machine or the like or the correction of a grindstone is conventionally performed by using a dedicated profile grindstone correcting device that is separate from the grinder. FIG. 4 is a front view of a conventional profile grindstone correcting device, in which a diamond tip 19 is attached to a turning shaft 17 of a spindle device 16 installed on a main body bed 15 via a turning arm 18, and the spindle device 16 is turned. The motor 20 causes the revolving arm 18 to oscillate around the axis of the revolving shaft 17 within a predetermined angle range. The grinding wheel 6 is removed from a forming grinder (not shown) and mounted on the profile grindstone correcting device so that its rotation axis (Y axis) is perpendicular to the axis of the turning shaft 17. The grinding wheel 6 is formed by rotating the grinding wheel 6 around the Y-axis while moving the grinding wheel 6 in the Y-axis and the vertical direction (Z-axis direction) on the whetstone correcting device, and by rotating the diamond tip 19 around the turning axis 17. The stone is formed by rocking.

A dresser device as shown in FIG. 5 is known as a type in which a diamond dresser wheel is used instead of a diamond tip and the dresser wheel is rotated. A dresser wheel rotating motor 23 is mounted in parallel with the dresser wheel 21 at the rear end of the dresser holder 22 that pivotally supports the dresser wheel 21, and an output shaft of the motor 23 and a support shaft of the dresser wheel 21 are provided with a pulley 24, The transmission belt 26 is connected via 25, and the dresser wheel 21 is rotated.

(Problems to be solved by the invention) In order to form a profile such as a gear tooth profile on a grinding wheel, while rotating the grinding wheel and moving in the Y-axis and Z-axis directions according to the profile, It is necessary for the dresser itself to rotate while rotating so that it always faces the forming surface of the grinding wheel in order to improve the forming surface accuracy and work efficiency. However, in the conventional example shown in FIG. Since the tool is not designed to rotate on its own with a single-stone diamond tip, the diamond tip is greatly worn and there is a difficulty in improving the precision of the forming surface.

Further, in the dresser device using the dresser wheel 21 shown in FIG. 5, since the dresser wheel 21 does not rotate (swing) along the grindstone forming surface only by the rotation, the dresser wheel 21 moves from the normal direction to the forming surface of the grinding wheel. It is difficult to make accurate profile without contact. If an attempt is made to add a turning spindle mechanism as shown in FIG. 4 to this dresser device,
As shown in the figure, a support shaft 27 is extended to the rear part of the dresser holder 22 and is pivotally supported on a fixed base 28, a dresser turning motor 29 is attached to the rear part of the fixed base 28, and the output shaft of the motor 29 and the holder The structure is such that the support shaft 27 is connected. However, in such a structure, the holder extending long in front of the support shaft 27
22 and the dresser wheel rotation motor 23 are mounted, it is difficult to perform accurate molding in terms of rigidity and balance of the support shaft 27, and since the dresser wheel rotation motor 23 itself rotates with the holder 22, depending on the case. Has a problem in that it interferes with the spindle portion of the grinding wheel to be molded.

The present invention does not mount the dresser wheel rotation motor on the dresser holder, but arranges it on the rear side of the main body casing, so that the dresser holder has a simple structure, it is easy to ensure accuracy, and the grinding wheel side during grinding wheel formation (EN) Provided is a rotary type rotary dresser that eliminates the risk of interference with the rotary type dresser.

(Means for Solving the Problems) According to the present invention, the dresser body casing is penetrated,
And a dresser spindle rotatably supported on the main body casing, a dresser turning motor mounted on the main body casing, and a turning force of the dresser turning motor fixed to the dresser spindle and applied to the dresser spindle. A gear transmission mechanism for transmitting, a dresser holder fixed to the front end of the dresser spindle, a dresser wheel pivotally supported at the tip of the dresser holder, and a dresser rotation motor connected to the rear end of the dresser spindle. A belt transmission mechanism for transmitting the rotational force of the dresser rotating motor to the dresser wheel through the hollow portion of the dresser spindle.

(Embodiment) FIG. 1 is a plan sectional view of a rotary rotary dresser according to an embodiment of the present invention, and FIG. 2 shows a relationship between the rotary rotary dresser and a grinding wheel of the embodiment of the present invention at the time of grinding wheel formation. It is a front view. A hollow dresser spindle 12 is horizontally rotatably supported via a bearing 13 by horizontally penetrating a main body casing 10 of the rotary type rotary dresser. A worm wheel 4 is fixed to a substantially middle portion of the dresser spindle 12. The worm wheel 4 has a body casing 10
Is engaged with the worm 5 fixed to the output shaft of the dresser turning motor 11 mounted on the upper part of the. A dresser holder 3 is connected to the front end of the dresser spindle 12 by bolts or the like. A dresser wheel 1 having a rotation axis perpendicular to the axis of the dresser spindle 12 is rotatably supported by a wheel support shaft 1a near the front end of the dresser holder 3. The dresser wheel 1 has its outer peripheral edge partially exposed from the holder 3 to the outside, as clearly shown in FIG. At the rear end of the dresser holder 3, a belt transmission shaft 14 is supported in parallel with the dresser wheel support shaft 1a, and the wheel side transmission belt 2 is hung between the belt transmission shaft 14 and the wheel support shaft 1a. . Dresser spindle 12
A dresser rotating motor 9 is mounted on the rear end of the spindle 12 at right angles to the axis of the spindle 12 via a spindle rear end cover 12a, and a pulley is provided between the output shaft of the motor 9 and the belt transmission shaft 14. The motor-side transmission belt 7 is passed around the hollow portion of the dresser spindle 12 via 8a and 8b. In this embodiment, as shown in FIG. 2, the dresser holder 3 is bent in a halfway portion, so that the center of rotation of the dresser wheel 1 at the tip thereof is displaced from the axis of the dresser spindle 12 to one side. Although the outer peripheral edge of the dresser wheel 1 is in contact with the axis of the dresser spindle 12 for ease of control during molding, of course, the outer peripheral edge of the dresser wheel need not be in contact with the axis of the dresser spindle 12 in this way. Good.

The above rotary type rotary dresser may be installed on the main body bed of the dedicated profile grindstone forming device, but it is preferably installed on the work table of the forming grinder adjacent to the work spindle stock or tailstock. Good. Explaining a case where the main body casing 10 is installed on the table of the forming grinder to form the grindstone of the grinder, first, the main body casing 10 is installed on the work table of the grinder so as to be parallel to the axis line of the work, and the grinding wheel 6 and The front and rear (Y-axis direction) and vertical (Z-axis direction) positions of the grinding wheel 6 are determined so that the dresser wheel 1 contacts, and the left and right positions of the table are set. The dressing wheel 6 is formed while driving the dresser turning motor 5 and the dresser rotating motor 9 and moving the grinding wheel 6 in the Y-axis direction and the Z-axis direction described above. The dresser wheel 1 is continuously rotated around the wheel support shaft by the dresser rotation motor 9 via the transmission belts 7 and 2, and the dresser rotation motor 11 is also used by the worm 5 and the worm wheel 4 to form the dresser spindle 12 and the dresser holder 3. It reciprocates around the axis of the dresser spindle 12 within a range of about 180 ° integrally with the.

3 (a) to 3 (c) are side views showing the relationship between the diamond dresser wheel 1 and the grinding wheel 6 at the time of forming the grinding wheel in the embodiment shown in FIG. FIG. 3 (a) shows the case where the dresser wheel 1 is in a vertical plane including the dresser spindle axis A, and in this state, the dresser wheel 1 is positioned at the lower end of the grinding wheel 6 on the vertical center line of the grinding wheel 6, that is, the Z axis. The wheels 1 come into contact with each other, and the outer peripheral tips of the grinding wheel 6 are formed by the rotations of the grinding wheel 6 and the dresser wheel 1 around their respective rotation axes. Dresser wheel 1 and grinding wheel 6
And the wheel 6 further moves simultaneously in the Y-axis and Z-axis directions of the center of rotation, and at the same time, the dresser wheel 1 rotates about the axis A within a predetermined angular range (see FIG. 3 ( b) and (c)). By controlling the two axes (Y axis and Z axis) of the grinding wheel 6 and controlling the rotation angle of the dresser wheel 1 around the axis A, the grinding wheel 6 is formed into a desired outer peripheral shape. In this case, the dresser wheel 1 is controlled so as to be always in contact with the forming surface D of the grinding wheel 6 from the normal direction, whereby an accurate tooth profile is obtained regardless of an error in the rounded shape of the outer diameter tip of the dresser wheel 1. Molding is done.

(Effect of the Invention) As described above, according to the present invention, the dresser rotation motor 9 also rotates about the axis A of the dresser spindle 12, but the dresser rotation motor 9 is opposite to the grinding wheel 6. Since it is located at the rear part of the main body casing 10 on the side, it does not interfere with the grinding wheel 6 and the work (not shown). Since a heavy object such as a motor is not placed on the dresser holder 3, the dresser holder 3 can be formed to have a light weight and a simple shape, and the shake or the like due to inertia does not occur during whirling. Furthermore, since the dresser rotating motor 9 is attached to the rear end of the dresser spindle 12, the balance of the dresser spindle 12 is maintained, and accurate grinding wheel molding can be performed. Grinding stone can be formed with an actual forming grinder without removing the work,
Since the work is immediately put into grinding after molding, work efficiency is improved, and since there is no misalignment, high molding precision and grinding precision can be obtained in this respect as well.

[Brief description of drawings]

1 is a plan sectional view of a rotary type rotary dresser according to an embodiment of the present invention, and FIG. 2 is a front view of the embodiment shown in FIG.
3 (a) to 3 (c) are partial side views showing the relationship between the grinding wheel and the dresser wheel during the grindstone forming operation in the embodiment of FIG. 1, and FIG. 4 is a conventional profile grindstone correcting device. FIG. 5 is a front view of a conventional dresser device using a dresser wheel, and FIG. 6 is a partially cut front view of the conventional example of FIG. 5 in which a dresser wheel turning spindle mechanism is added. Is. 1 ... Dresser wheel, 2, 7 ... Transmission belt, 3 ...
Dresser holder, 4 ... Worm wheel, 5 ... Worm, 6 ... Grinding wheel, 9 ... Dresser rotation motor, 10
...... Main body casing, 11 ...... Dresser turning motor, 12
...... Dresser spindle.

Claims (1)

(57) [Scope of utility model registration request] 1. A dresser spindle penetrating the dresser main body casing and rotatably supported by the main body casing, a dresser turning motor mounted on the main body casing, and fixed to the dresser spindle. A gear transmission mechanism that transmits the turning force of the dresser turning motor to the dresser spindle, a dresser holder fixed to the front end of the dresser spindle, a dresser wheel pivotally supported at the tip of the dresser holder, and the dresser spindle. A swivel rotary dresser, comprising: a dresser rotation motor connected to a rear end of the dresser; and a belt transmission mechanism for transmitting a rotational force of the dresser rotation motor to the dresser wheel through a hollow portion of the dresser spindle. .