JPS63295179A - Rotary dressing device - Google Patents

Abstract

PURPOSE:To have processing with high precision and high efficiency by furnishing a speed increasing mechanism with at least two stops between a drive mechanism and a rotary wheel. CONSTITUTION:A motor 7 transmits the power to a revolving part 11 through a major pulley 4 fixed to the shaft of motor, a belt 10, and a pulley 2 fixed to the intermediate shaft of the revolving part 11. Another major pulley 3 is fixed to that end of intermediate shaft opposite to the pulley 2, and the power from the motor 7 is transmitted to a minor pulley 13 of the processing part 12 through belt and to a rotary wheel 1 through the shaft thereof. This rotary wheel 1 is of diamond type and transmits specified power to a grinding wheel 14 while contacting it at a part in the circumferential direction. Accordingly the speed of the rotary wheel 1 is increased at two steps, wherein the number of revolutions can be set over a wide range, that provides practicability of grinding with high precision and high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary dressing device for a bearing outer ring groove grinder or the like. More specifically, the present invention relates to a rotary dressing device having a speed increasing mechanism of at least two or more stages.

(Prior art) For example, when a diamond rotary dressing device is used to grind the outer race surface of a ball bearing, in order to guarantee the accuracy required and increase the PL grinding efficiency, it is necessary to It is widely known that it is necessary to be able to freely select the circumferential speed ratio within a high range.

(Problem to be solved by the invention) However, in the conventional rotary dressing device that applies the diamond rotary dressing method, in order to perform high-precision, high-efficiency grinding, the circumferential speed ratio of the grinding wheel and the diamond rotary wheel must be set in a high range. (for example, from 0.6 to 0.8), but in the past, the rotary wheel and a drive mechanism such as an electric motor or a hydraulic motor were directly connected, or connected to a pulley. If MII is constructed in this way, there will be a limit to the number of revolutions of the rotary wheel, and the range of use will therefore be narrowly limited, and the mounting position of the electric motor will also be limited to the vicinity of the rotary wheel.

In addition, in conventional rotary tressing equipment, the rotary wheel and electric motor are placed very close to each other, so vibrations from the motor can be felt on the rotor tower wheel! ! There also arises the problem that sufficient accuracy cannot be obtained.

Therefore, it is an object of the present invention to
To provide a rotary dressing device in which mechanisms are connected in multiple stages, the number of rotations can be freely set over a wide range, high precision and high efficiency grinding is possible, and the drive mechanism has a high degree of freedom in mounting position.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the rotary tressing device of the present invention includes a rotary wheel (1) and a grinding wheel (14) to which rotational power is transmitted by a drive mechanism (7). In a rotary dressing device that can change the circumferential speed ratio of 1111 and
The present invention is characterized in that a speed increasing mechanism (2.3° 4.10.13) with at least two stages is provided between the drive mechanism and the rotary wheel.

(Function) In the rotary dressing device of the present invention configured as described above, the number of revolutions of the rotary wheel can be freely set over a wide range, and highly accurate and highly efficient grinding becomes possible.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In addition, in the drawings, the same parts are explained using the same reference numerals.

FIG. 1 is a top view of a rotary dressing device showing an embodiment of the present invention. The electric motor 7 includes a large pulley 4 fixed to the shaft of the electric motor 7, a belt lO, and a rotating m t t
The rotating part ti is connected via a pulley 2 fixed to an intermediate shaft 5 of
transmits power to. A large pulley 3 is fixed to the end of the intermediate shaft 5 opposite to the pulley 2, and a small pulley 13 of the processing section 12 and the shaft of the rotary wheel 1 are connected to the rotary wheel via a belt (not shown). l to electric motor 7
It transmits power from Rotary wheel 1 is
This is a well-known diamond rotary wheel, and transmits a predetermined power to the grinding wheel 14 while rotating while abutting against the grinding wheel 14 at a portion in the circumferential direction. Therefore, large pulley-4
The speed is increased by one step from 1 to 2, and the large pulley is further increased.
The speed is increased by one more step from 3 to small pulley 13, and eventually the speed is increased to 2.
The speed will be increased in stages.

Since the position of the intermediate shaft 5 is fixed, as can be seen from FIG. 2, the tension of the belt (not shown) between the rotating section 11 and the rotary wheel l of the processing section 12 can be adjusted using the spacer 8 and W! Do it with wood screws.

In addition, the 7tt motor a7 is attached to the fixed side of the rotary dressing device, and therefore the electric motor 7 and the rotating part 11
Adjustment of the tension of the belt lO between the two can be performed by changing the position of the electric motor 7.

As shown in FIG. 3, the pivoting section 11 inserts the intermediate shaft 5 into the pivoting shaft 6 extending in the vertical direction of the rotary dressing device.
Since this is provided, the amount of bacteria on the rotary wheel l and the intermediate shaft 5 can be kept constant.

In this embodiment described above, the speed increase from the drive lha mechanism to the rotary wheel 1 is performed in two stages, but it goes without saying that it is also possible to increase the speed in 2nd stage M or higher. Probably. Also, a hydraulic motor or the like may be used instead of the electric motor.

(Effects of the Invention) According to the rotary tressing device of the present invention, the following effects can be obtained.

Since the speed can be increased in multiple stages, the rotary wheel can be rotated at high speed. Also, there is no need to install the drive mechanism very close to the rotary wheel.

This provides flexibility in terms of space, making it easier to select the location for the drive mechanism.

Further, since an appropriate distance is created between the rotary wheel and the drive mechanism, especially a member such as an electric motor that is likely to generate vibrations, it is possible to prevent vibrations from the drive mechanism from adversely affecting the rotary wheel. Therefore.

It can be expected that the machining accuracy and efficiency of the rotary tressing device will improve.

[Brief explanation of the drawing]

7Jr l 1m shows an example of undeveloped Ig+"-
FIG. 2 is a side view of FIG. 1. 3 is a sectional view taken in the direction of arrow A in FIG. 2. FIG. [Explanation of symbols of main parts]

Claims (1)

[Claims] Rotational power is transmitted by the drive mechanism Circumference between rotary wheel and grinding wheel Rotary dressing that can change the speed ratio In the device, Between the drive mechanism and the rotary wheel is equipped with a speed increasing mechanism consisting of at least two stages. Rotary dressing characterized by equipment.