KR100358540B1 - Lapping apparatus for air compressor valve - Google Patents

Abstract

The present invention relates to a lapping apparatus for an air compressor valve that leads to improved accuracy by applying an even distribution of lapping processing pressure over the entire surface of a processing surface during lapping of an air compressor valve.

In lapping a valve of an air compressor, an X-axis slider having a predetermined horizontal width is slidably installed at an upper part of a bed, and a base including an X-axis displacement means for displacing the X-axis slider while converting rotational force into a linear motion at a lower part thereof. part; The Z-axis base is fixedly installed on the upper portion of the bed orthogonal to the bed, and the Z-axis displacement means for converting the rotational force into linear motion is fixedly installed in the same direction on the Z-axis base. A Z-axis moving part which is coupled to the Z-axis displacement means and is connected to the Z-axis displacement means, and is configured to move linearly while the lapping tool surface is positioned; The Y-axis sliding guide vertically orthogonal to one side of the X-axis slider is fixed, and the Y-axis displacement means is configured in the same direction, and the Y-axis slider is connected to the Y-axis displacement means while being guided to the sliding guide. Y-axis moving unit; A drive motor fixed to the Y-axis slider parallel to the Y-axis moving part and selectively driven forward / reversely by controlling a driving force by a control means; A holding part fixedly mounted to a drive shaft of the drive motor and rotating by uniformly holding an air compressor valve for lapping on a lapping tool surface; It was configured to include.

Description

Lapping apparatus for air compressor valve

The present invention relates to a lapping apparatus for an air compressor valve, and more particularly, in the lapping process of an air compressor valve, by applying an even distribution of lapping processing pressures over the entire surface of the processing surface to derive improved precision. The present invention relates to a wrapping device for an air compressor valve.

In general, a valve used in an air compressor is a plate or strip surface and a valve using deflection of a plate or strip generated by suction and compression force generated during the piston reciprocating motion of the compressor. This valve has the principle of opening and closing the seat surface.

In particular, air compressors in power plants are divided into SAC (Service Air Compressor) and ISC (Instrument Air Compressor). They are used for the operation of pneumatic actuators and auxiliary air in the plant. During operation of the air compressor, pulverized coal and water are inhaled due to the impact of the coal mine facility and the surrounding environment to form iron oxide scale on the valve seat surface.

These effects cause contact corrosion between the valve plate and the valve seat, and excessive manpower and time are consumed due to frequent air compressor maintenance.

The conventional method for lapping the valve,

① After disassembling the valve, clean the disassembled parts with abrasive paper and solvent.

② Check the valve seat surface and turn the seat surface if the corrosion erosion condition is severe.

③ Wrap the sheet surface by using Lap Compound in the order of # 220 → # 600 → # 800 → # 1000.

④ Assemble the valve assembly and install it on the air compressor.

This conventional method refers to the manual work of lapping the processing area of the valve to be processed by hand and wrapping it by hand, and not only takes 4H / M to wrap one valve but also by hand method, so that the lapping surface has a certain precision. Failure to maintain has resulted in frequent overhauls.

Therefore, the present invention was created to solve the above problems, the object of which is to improve the accuracy by applying a uniform distribution of the lapping processing pressure over the entire surface of the processing surface in lapping the air compressor valve The present invention provides a wrapping device for an air compressor valve.

In order to achieve the above object, the present invention, in lapping the valve of the air compressor,

A base part having an X axis slider slidingly installed at an upper portion of the bed, and having an X axis displacement means configured to displace the X axis slider while converting a rotational force into a linear motion at a lower portion thereof;

The Z-axis base is fixedly installed on the upper portion of the bed orthogonal to the bed, and the Z-axis displacement means for converting the rotational force into linear motion is fixedly installed in the same direction on the Z-axis base. A Z-axis moving part which is coupled to the Z-axis displacement means and is connected to the Z-axis displacement means, and is configured to move linearly while the lapping tool surface is positioned;

The Y-axis sliding guide vertically orthogonal to one side of the X-axis slider is fixed, and the Y-axis displacement means is configured in the same direction, and the Y-axis slider is connected to the Y-axis displacement means while being guided to the sliding guide. Y-axis moving unit;

A drive motor fixed to the Y-axis slider parallel to the Y-axis moving part and selectively driven forward / reversely by controlling a driving force by a control means;

A holding part fixedly mounted to a drive shaft of the drive motor and rotating by uniformly holding an air compressor valve for lapping on a lapping tool surface; It has a feature configured to include.

1 is a front view showing the wrapping device of the air compressor valve according to the present invention.

2 is a side view of FIG. 1;

3 is an enlarged cross-sectional view of the main portion of FIG. 1;

4 is an enlarged partial side cross-sectional view of the holding means in FIGS. 1 and 2;

※ Explanation of code about main part of drawing ※

10: base, 11: bed,

12: X-axis slider, 13: ball screw axis,

14: bearing, 15: manual handle,

16: ball screw nut, 17: adjusting shim

18: with grease injection,

20: Z axis moving part, 21: Z axis base,

22: Z-axis slider, 23: ball screw axis,

24: bearing, 25: handwheel,

26: ball screw nut, 29: lapping tool surface,

30: Y axis moving part, 31: Y axis sliding guide,

32: Y-axis slider, 33: ball screw axis,

34: bearing, 35: manual handle,

36: ball screw nut,

40: drive motor, 41: reduction gear,

42: drive shaft, 43: motor bracket,

50: operation panel, 51: operation panel supporter,

60: holding part, 61: fixing plate,

62: holding block, 63: variable plate,

64: guide rod, 65: coil spring,

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on attached drawing.

1 is a front view showing a wrapping device of the air compressor valve according to the invention, Figure 2 is a side view of Figure 1, Figure 3 is an enlarged cross-sectional view of the main part of Figure 1, Figure 4 is a holding means in Figures 1 and 2 Some side cross-sectional view showing enlarged.

The configuration of the present invention is largely to uniformly wrap the workpiece (valve of the air compressor) by the base portion 10, the Z-axis moving portion 20, the Y-axis moving portion 30 and the electric rotating force with these moving portions. The holding unit 60 and the like.

Specific configuration of the base portion 10 is as follows.

An X-axis slider 12 having a predetermined horizontal moving width is installed on the upper bed 11 in the longitudinal direction, while the lower part of the bed 11 constitutes an X-axis displacement means for converting rotational force into linear motion.

The X-axis displacement means is a ball screw shaft 13 is coupled to the bearing 14 in the same direction as the bed 11 in the longitudinal direction, one side of the shaft is a manual handle 15 for the axis rotation according to the manual force While being axially coupled, the ball screw nut fixedly coupled to the X-axis slider 12 on the ball screw shaft 13 and horizontally shifting the X-axis slider 12 while the rotation of the axis is converted to linear movement by the characteristics of the ball screw. (16) and the like.

On the other hand, between the X-axis slider 12 and the bed 11 which is slidably coupled to the X-axis slider 12 can be inserted into the adjustment shim (17), which can be replaced by sliding wear, to correct fine height due to frictional wear. have.

In addition, a grease injection path 18 for injecting grease may be formed in the bed 11 slidingly coupled to the X-axis slider 12 to minimize friction coefficient between sliding motions.

Next, the Z-axis moving unit 20 will be described.

The Z-axis base 21 is fixedly installed by the fastening bolt 21a to be perpendicular to the bed 11 so as not to interfere with the X-axis slider 12 on the bed 11, and the Z-axis base 21 ) Also constituted the same Z-axis displacement means as that of the X-axis displacement means.

The Z-axis displacement means has a ball screw shaft 23 is coupled to the bearing 24 in the same direction as the Z-axis base 21 in the longitudinal direction, the one end of the shaft for manual rotation 25 for the axis rotation according to the manual force ) Is axially coupled to the ball screw shaft (23) is fixedly coupled to the Z-axis slider 22 and the rotation of the axis is converted to linear movement by the characteristics of the ball screw while the Z-axis slider 22 and the X-axis direction It is a ball screw device comprised of the ball screw nut 26 etc. which horizontally displace in the orthogonal direction.

On the upper part of the ball screw nut 26, a lapping tool surface 29 for lapping a workpiece is fixed.

Next, the Y-axis moving unit 30 will be described.

The Y-axis sliding guide 31 was fixedly installed at one end of the X-axis slider 12 so as to be perpendicular to the X-axis slider 12.

In addition, the upper portion of the sliding guide 31 has the same Y-axis displacement means as the configuration of the X-axis or Z-axis displacement means in the same direction as the guide. The Z-axis displacement means is a ball screw shaft 33 is coupled to the bearing 34 in the same direction as the Y-axis sliding guide 31 in the height direction, and one side end of the shaft is a manual handle for rotating the shaft according to the manual force ( 35) is axially coupled to the ball screw shaft 33 is fixedly coupled to the Y-axis slider 32 which will be described later, and the rotation of the axis is converted to linear movement by the characteristics of the ball screw horizontally the Y-axis slider 32 A ball screw device comprising a ball screw nut 36 or the like for vertical displacement in a direction perpendicular to the direction.

The Y-axis slider 32 is configured to be linearly guided to the Y-axis sliding guide 31 while being axially coupled to the ball screw shaft 33.

In addition, on the Y-axis slider 32, the motor bracket 43 and the operation panel supporter 51 which fixedly install the drive motor 40 and the operation panel 50 which are mentioned later were fixedly installed in the horizontal direction.

Of course, the drive motor 40 is installed on the upper part of the motor bracket 41, and the drive motor 40 applied to the present invention is capable of forward / reverse drive and the reduction gear 41 is connected to the output end of the motor 40. It is a combined geared motor.

In addition, the operation panel supporter 51 adjacent to the drive motor 40 is configured with an operation panel 50 for controlling the power supply and the forward / reverse driving of the drive motor 40.

On the other hand, the drive shaft 42 of the drive motor 40 according to the present invention was configured to hold a holding unit 60 that rotates by uniformly holding the air compressor valve for lapping on the lapping tool surface 29.

A concrete configuration of the holding part 60 is a fixed plate 61 fixed to the drive shaft 42 of the drive motor 40, a vertical guided on the fixed plate 61, and holding an air compressor valve on the bottom thereof. A variable plate 63 configured with a holding block 62, a guide rod 64 fixed from the fixed plate 61 and guiding vertical movement of the variable plate 63, and variable with the fixed plate 61. The coil spring 65 was uniformly held at equal intervals between the plates 63 and always applied the same pressing force to the front surface of the variable plate 63.

The operation of the present invention configured as described above will be described.

Before lapping the workpiece (valve of air compressor), the position to be wrapped must be adjusted. The adjustment is performed by holding the manual handle 15 on the bed 11 and the manual handle 25 on the Z axis base 21 with both hands. When turned, the ball screw shafts 13 and 23 which are axially coupled are rotated by the bearings 14 and 24, and thus the ball screw nuts 16 and 26 which are respectively axially coupled to the ball screw shafts 13 and 23. ) Moves horizontally in the direction orthogonal to each other.

Accordingly, the ball screw nuts 16 and 26 move the X-axis slider 12 and the Z-axis slider 22, and the holding part installed at the end of the drive shaft 42 of the drive motor 40 and the Z-axis slider 22. Determine the lapping position with the lapping tool surface 29 fixed to the upper part of the).

When the horizontal position of the device according to the present invention is completed, turn the manual handle 35 of the Y-axis moving part 30 to move the holding part 60 including the drive motor 40 vertically downward so that the lapping tool surface 29 Hold the workpiece (air compressor valve) to be placed on it.

The action of the Y-axis moving unit 30 as described above is substantially the same as the base unit 10 and the Z-axis moving unit 20. Specifically, when the manual handle 35 of the Y-axis is turned, both ends of the bearing 34 The combined ball screw shaft 33 is linearly axially coupled to the ball screw nut 36 guided to the Y-axis sliding guide 31 while idling. The motor bracket 43 fixed to the ball screw nut 36 and the operation panel supporter 51 fixed to one side of the bracket are interlocked thereto, and the holding part fixed at the end of the driving motor 40 and the driving shaft 42 is also connected thereto. The workpiece is to be approached and held on the lapping tool surface 29.

The action of the holding part 60 is to hold the workpiece by the holding block 62 of the variable plate 63 while fixing the position and at the same time the coil spring 65 configured between the fixed plate 61 and the variable plate 63. By uniform elastic force is applied to the variable plate 63 to provide a complete holding force of the workpiece.

When the above operation is completed, press the power switch of the control panel 50 to apply power to the drive motor 40, and wrap the workpiece while controlling the forward / reverse drive according to the situation.

The variable plate 63 of the holding part 60 has a constant displacement of the vertical position by the guide rod 64 guided by the fixing plate 61, and also has the elastic force of the coil spring 65 uniformly distributed and positioned. It is evenly distributed over the front of the workpiece (air compressor valve) to be held, which can increase the reliability of the lapping.

Applying the present invention as described above, by enabling the transfer of the lapping tool surface back and forth, left and right, up and down, it is possible to carry out precise lapping work by ensuring the convenience, squareness and flatness of the work, and evenly holding part Due to the coil spring placed in the distribution, the compressive force is evenly distributed on the front surface of the workpiece, and a very desirable effect can be expected that the machining precision of the workpiece due to lapping is greatly improved as compared with the prior art.

Claims (6)

In lapping the valve of the air compressor, A base part having an X axis slider slidingly installed at an upper portion of the bed, and having an X axis displacement means configured to displace the X axis slider while converting a rotational force into a linear motion at a lower portion thereof; The Z-axis base is fixedly installed on the upper portion of the bed orthogonal to the bed, and the Z-axis displacement means for converting the rotational force into linear motion is fixedly installed in the same direction on the Z-axis base. A Z-axis moving part which is coupled to the Z-axis displacement means, which is connected to the Z-axis displacement means, and which is linearly moved, while the lapping tool surface is positioned; The Y-axis sliding guide vertically orthogonal to one side of the X-axis slider is fixed, and the Y-axis displacement means is configured in the same direction, and the Y-axis slider is connected to the Y-axis displacement means while being guided to the sliding guide. Y-axis moving unit; A drive motor fixed to the Y-axis slider parallel to the Y-axis moving part and selectively driven forward / reversely by controlling a driving force by a control means; A holding part fixedly mounted to a drive shaft of the drive motor and rotating by uniformly holding an air compressor valve for lapping on a lapping tool surface; Lapping device of the air compressor valve, characterized in that comprises a. The wrapping apparatus of claim 1, wherein the X-axis, Y-axis, and Z-axis displacement means are ball screw devices for linearly moving the ball screw nut by a manual handle for rotating each ball screw axis. The wrapping apparatus of claim 1, wherein an adjustment shim that is replaceable by sliding wear is inserted between the X-axis slider and the bed slidingly coupled thereto. The wrapping apparatus of claim 1 or 3, wherein the bed slidably coupled to the X-axis slider forms a grease injection path for injecting grease to reduce the coefficient of friction. 2. The wrapping apparatus of claim 1, wherein the drive motor is a geared motor having a reduction gear mounted at an output end thereof. The variable plate according to claim 1 or 5, wherein the holding part comprises a fixed plate fixed to the drive shaft of the drive motor, a variable plate configured to be vertically guided on the fixed plate and to hold an air compressor valve on the bottom thereof. Lapping apparatus of the air compressor valve, characterized in that consisting of a coil spring is uniformly held between the fixed plate and the variable plate at equal intervals and always impart the same pressing force to the front of the variable plate.