KR100464290B1 - Cam grinder - Google Patents

Abstract

PURPOSE: A cam grinding machine is provided to obtain the surface roughness corresponding to various machine tools by reciprocating a driving unit and a grinding unit along an X-axis and a Y-axis and grinding the outer bore and the inner bore of the cam with the outer grinding wheel and the inner grinding wheel. CONSTITUTION: A cam grinding machine(1) is composed of a housing, a driving unit installed in the housing to process the outer bore and the inner bore of the cam, and a control unit formed in the housing to control the driving unit. The driving unit comprises a fixing unit rotating the cam at regular speed and a grinding unit(340) grinding the outer bore and the inner bore of the cam fastened to the fixing unit. The fixing unit has first and second fixing units fastening the cam, a fixing unit moving linear(308) fixing the first and second fixing unit by sliding, an X-axis moving plate(306) fastening the fixing unit moving linear and moving along the X-axis by the control unit, and an X-axis base(304) combined with the X-axis moving plate by sliding. The grinding unit comprises a Y-axis base(342) formed perpendicularly to the X-axis base in the upper part of the housing, a Y-axis moving plate(344) combined with the Y-axis base by sliding, an outer bore grinding wheel(364) grinding the cam fastened in the first fixing unit, an outer bore spindle motor(346) transmitting power to the outer bore grinding wheel, an inner bore grinding wheel(358) grinding the inner bore of the cam, and an inner bore spindle motor(356).

Description

Cam grinder {Cam grinder}

The present invention relates to a cam grinder, and more particularly, to a cam grinder which can be processed to satisfy the required roughness by simultaneously or individually grinding the inner and outer diameters of the cam.

In general, the cam is a mechanical component installed to convert rotational motion to linear motion in various machinery, and various types of cams are used, but the most commonly used cam is a flat cam, and the flat cam is a constant velocity It plays a role of converting rotational movement into constant velocity reciprocating movement.

Such a cam moves in a state where the follower is always in contact with the surface of the cam, and when the cam is used for a long time, wear of the cam occurs, and as the wear progresses, the linear movement amount of the follower changes according to the rotation of the cam. Precise control is impossible, and noise is generated by friction between the cam surface and the follower.

Accordingly, a cam polisher was developed and used to precisely polish the surface of the cam to maintain the precision according to the operation of the cam and to maintain a certain level of surface precision.

However, most of these cam grinders have been developed with single or multi-axis CNC machines. However, these cam grinders can only selectively grind the outer diameter or the inner diameter. Therefore, there is an unreasonable problem that a separate cam grinder must be provided to polish the outer diameter cam or the inner diameter cam. there was.

The present invention has been made to solve the above problems, and the object of the present invention is to provide a cam grinder which can freely process the outer and inner diameters of the cam and can ensure a surface roughness that can satisfy various machine tools. .

1 is a front view showing a cam grinder according to the present invention.

Figure 2 is a plan view showing the internal structure of the cam polishing machine according to the present invention.

Figure 3 is a side view showing the internal structure of the cam grinder according to the present invention.

Figure 4 is a perspective view showing a driving part of the main part of the cam polishing machine according to the present invention.

Figure 5 is a perspective view showing the outer diameter polishing of the cam drive unit of the cam polishing machine according to the present invention.

6 is a side view showing the working state of FIG.

Figure 7 is a perspective view showing the inner diameter of the cam driving portion of the cam polishing machine according to the present invention.

8 is a side view showing the working state of FIG.

<Explanation of symbols for the main parts of the drawings>

1: Cam Polisher 100: Housing

102: opening and closing door 200: control unit

300: drive unit 302: fixed part

304: X axis base 306: X axis moving plate

308: fixed part moving linear 310: 1st fixed part

312: cam rotation motor 314: cam rotation gear box

316: first fixed chuck 318, 328: fixing device

320: first fixed base 322: second fixed part

324: second fixed chuck 326: second fixed base

328: fixing device 340: grinding unit

342: Y axis base 344: Y axis moving plate

346: outer diameter spindle motor 348: power connection device

350: grinding gear box 352: dark rotating part

354: arm 356: inner diameter spindle motor

358: internal polishing 횔 360: arm support

362: Amgo Government 364: Outer diameter grinding wheel

366: Shield

Cam grinding machine according to the present invention for achieving the above object, the X-axis base is provided in the X-axis direction of the main body, and installed on the upper portion of the X-axis base in a reciprocating transfer in the X-axis direction reciprocating by a conveying means An X-axis moving plate provided to be transferred, an upper part of the X-axis moving plate, a fixed part moving linear formed on both sides of the lower side in the longitudinal direction to be inclined inward, and a slide moving to one side of the fixed part moving linear A first fixing base is provided with a fixing device to be fixed, and a first fixing chuck to which a cam to be fixed and machined is fixed to the first fixing base, and a cam rotation motor for rotating the first fixing chuck at a constant speed. A first fixing part having a cam rotating gear box provided to transmit the power of the cam rotating boat to the first fixed chuck, and the fixed part moving linear. A second fixing base provided with a fixing device to slide and move in the direction opposite to the first fixing part is provided on the other side, the rotating shaft of the cam fixed to the second fixing base, fixed to the first fixing chuck A fixing part provided with a second fixing part for supporting a second fixing chuck; Y-axis base provided in the direction orthogonal to the X-axis moving plate of the main body, and Y-axis moving is provided to be reciprocally transferred in the Y-axis direction on the upper portion of the Y-axis base to be reciprocated by a transfer means A plate, an outer diameter wheel for polishing the outer diameter of the cam fixed to the first fixing part provided on the upper surface of the Y-axis moving plate and an outer diameter spindle motor for transmitting power to the outer polishing wheel, and the inner diameter of the cam A polishing unit provided with an inner diameter grinding wheel and an inner diameter spindle motor; And a control unit for controlling the operation of the fixing unit and the polishing unit. In addition, an abrasive gear box having the outer diameter grinding wheel mounted on one side of an upper surface of the Y-axis moving plate, and an upper surface of the Y-axis moving plate. An outer diameter spindle motor for supplying power to the polishing gear box on the other side, and a power connecting device for transmitting power of the outer diameter spindle motor to the polishing gear box, and a pair of dark rotating parts on an upper portion of the polishing gear box; It is preferable that the inner rotating spindle is rotatably coupled to the arm rotating unit, and the inner diameter grinding wheel is directly connected to an end of the rotating side to provide the inner diameter spindle motor.

Hereinafter, a cam grinder according to the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, terms defined are defined in consideration of functions in the present invention, which may vary according to the intention or custom of a person skilled in the art, and thus, limit the technical components of the present invention. It should not be understood as.

1 is a front view showing a cam grinding machine according to the present invention, Figure 2 is a plan view showing the internal structure of the cam grinding machine according to the present invention, Figure 3 is a side view showing the internal structure of the cam grinding machine according to the present invention.

As shown in FIG. 1, the cam grinder 1 according to the present invention includes a housing 100 forming an outer shape, and a driving part 300 provided in an inner space of the housing 100 to process an outer diameter and an inner diameter of a cam. And a control unit 200 provided at one side of the housing 100 to control the driving unit 300.

The housing 100 is provided to block the outside of the drive unit 300 and the housing 100 provided inside the housing 100 to form a working environment of the cam requiring high roughness, The side is provided with an opening and closing door 102 that can open and close the housing 100 so that the operator can detach or operate the cam to the drive unit 300.

The control unit 200 is provided on one side of the opening / closing door of the housing 100 to be connected to the fixing unit 302 and the polishing unit 340 of the driving unit 300 to control each component unit 302 and 340. NC controller by PC control is included.

The driving unit 300 is provided with a fixed part 302 for rotating the fixed cam at a constant speed, and a polishing part 340 for grinding the outer and inner diameters of the cam fixed to the fixed part. .

4 is a perspective view showing a driving unit which is a main part of a cam polishing machine according to the present invention.

As shown in the drawing, the driving units 300 are orthogonal to each other, and the fixing unit 302 is installed on the extension line of the X axis and the polishing unit 340 is provided on the extension line of the Y axis.

The fixing part 302, the first and second fixing part 302 for fixing the cam to be processed, the first and second fixing part 302 and the fixed part moving linear 308 is fixed to the slide movement The fixed part moving linear 308 is fixed, and the X axis moving plate 306 moved by the control unit 200 in the X axis direction and the X axis moving plate 306 are slidably coupled to each other. An X-axis base 304 is provided.

Here, the X-axis base 304 is fixed in the upper X-axis direction of the inner surface of the housing 100, the lower portion of the X-axis base 304 is controlled by the control unit 200 to move the X-axis A conveying means (not shown) for moving the plate 306 is provided, and the fixing part moving linear 308 is fixed to an upper surface of the X-axis moving plate 306.

In addition, the fixed part moving linear 308 fixed to the upper surface of the X-axis moving plate 306 is provided such that both side lower portions of the longitudinal direction are inclined inward, and the slide part linear 308 is slidable. It is formed to be supported by the fixing device 318, 328 provided in the lower portion of the first and second fixing parts 302 to be coupled.

In addition, the first fixing part 310 is located on the upper surface of one side of the fixed part moving linear, and is provided with a first fixing chuck 316 to which the cam to be processed is fixed, and to the control of the controller 200. Accordingly, a cam rotation motor 312 for rotating the first fixed chuck 316 at a constant speed is provided, and a cam rotation gear box for transmitting the power of the cam rotation motor 312 to the first fixed chuck 316. 314 is provided, and a pair of fixing devices 318 and 328 for fixing the first fixing part 310 to the fixing part moving linear 308 is provided below the cam rotary gear box 314. do.

In addition, the second fixing part 322 is located in the direction opposite to the first fixing part 310 on the other upper surface of the fixed part moving linear 308, the first fixing part 310 of the first The second fixing chuck 324 is provided at the same center position as the center of the first fixing chuck 316, and the second fixing portion 308 is attached to the fixing part linear 308 at the lower portion of the second fixing 322. A pair of fasteners 318 and 328 for securing 322 are provided.

The first and second fixing parts 302 may slide and fix the respective positions on the fixed part moving linear 308 according to the cam to be processed, and the second fixing part 322 may be fixed. Supports the rotation center of the other side of the cam fixed to the first fixing portion 310 to prevent the shaking when the cam is rotated

The polishing unit 340 is provided with a Y-axis base 342 in a direction orthogonal to the X-axis base 304 on an inner upper portion of the housing 100, and slideable on the Y-axis base 342. Y-axis movable plate 344 coupled to the outer surface, and the outer diameter grinding wheel (364) and the outer diameter grinding wheel provided on the upper surface of the Y-axis movement plate 344 to polish the cam fixed to the first fixing portion (310) An outer diameter spindle motor 346 for transmitting power to the 364, an inner diameter polishing wheel 358 and an inner diameter spindle motor 356 for polishing the inner diameter of the cam are provided.

Here, the Y-axis base 342 is fixed in the upper Y-axis direction of the inner surface of the housing 100, the lower portion of the Y-axis base 342 is controlled by the control unit 200 to move the Y-axis A conveying means (not shown) for moving the plate 344 is provided. In addition, the moving means for moving the X-axis moving plate 306 and the Y-axis moving plate 344 is the X, Y-axis base 304 , 342, such as a rack pinion or LM guide for moving the X, Y axis moving plates (306, 344) can be used in general, a linear moving device.

In addition, an upper surface of the Y-axis moving plate 344 is provided with a polishing gear box 350 to which the outer diameter grinding wheel 364 and the inner diameter grinding wheel 358 are mounted, and the Y-axis moving plate 344. An outer diameter spindle motor 346 for supplying power to the polishing gear box 350 and a power connecting device 348 for transmitting the power of the outer diameter spindle motor 346 to the polishing gear box 350 at the rear of the upper surface. Is prepared.

Here, the outer diameter grinding wheel 364 is mounted to one side of the polishing gear box 350, the shield 366 is provided to prevent the by-products generated during the polishing of the cam to scatter.

In addition, the inner diameter grinding wheel 358 is directly connected to the inner diameter spindle motor 356 fixed to an end of the rotation arm 354 rotatably supported on the upper portion of the polishing gear box 350, and the rotation arm ( 354 is interposed to be rotatably interposed between a pair of the dark rotating part 352 provided on the top of the polishing gear box 350.

In addition, an arm support part 360 is formed below the pivoting end of the arm 354 to support the arm fixing part 362 provided in the polishing gear box 350 to limit the rotation of the arm 354.

Accordingly, the operation of the cam polishing machine according to the present invention will be described in detail with reference to the accompanying drawings.

5 is a perspective view illustrating the outer diameter of the cam of the driving unit of the cam polishing machine according to the present invention, and FIG. 6 is a side view illustrating a working state of FIG. 5.

As shown, the cam is fixed between the first fixing part 310 or the first fixing part 310 and the second fixing part 322 of the fixing part 302 to polish the outer diameter of the cam.

Here, the first fixing part 310 and the second fixing part 322 to which the cam is fixed are provided on the fixing part moving linear 308 so as to be slidable, and are moved according to the size of the cam so that the cam is fixed. By adjusting the fixing devices 318 and 328 of the first and second fixing bases 320 and 326 provided in the lower part of the first and second fixing parts 302 and fixing them to the fixing part moving linear 308, the size of the cam is correlated. The cam can be fixed without it.

Thereafter, when the control unit 200 is operated to operate, the control unit 200 sends an operation time signal to the fixing unit 302 and the polishing unit 340.

At this time, the outer diameter spindle motor 346 of the polishing unit 340 is operated under the control of the control unit 200, the power of the outer diameter spindle motor 346 is polished by the power connection device 348 The outer grinding wheel 364 which is transmitted to the gear box 350 and connected to the polishing gear box 350 is driven.

Here, the polishing unit 340 is fixed to the Y-axis moving plate 344 movably coupled to the Y-axis base 342 by a transfer means, the outer diameter of the cam under the control of the control unit 200 Accordingly, the outer diameter grinding wheel 364 of the polishing unit 340 polishes the outer circumferential surface of the cam by reciprocating in the direction of the Y axis.

In addition, the first fixing part 310 in which the cam is fixed is operated by the cam rotation motor 312 under the control of the controller 200, and the power of the cam rotation motor 312 is the first. The fixed chuck 316 is transmitted to the first fixed chuck 316 by the cam rotation gear box 314 fixed, so that the cam fixed to the first fixed chuck 316 rotates at a constant speed. .

In addition, the first and second fixing parts 302 fixed to the fixed part moving linear 308 is the X axis moving plate 306 to which the fixed part moving linear 308 is fixed to the X axis base 304 The reciprocating movement in the direction of the X-axis by the transfer means provided in the lower portion to transfer the cam in the X-axis direction of the outer diameter grinding wheel (364).

7 is a perspective view showing the inner diameter of the cam of the driving unit of the cam polishing machine according to the present invention, Figure 8 is a side view showing the working state of FIG.

As shown, the cam is fixed between the first fixing part 310 or the first fixing part 310 and the second fixing part 322 of the fixing part 302 to polish the inner diameter of the cam.

Here, the first fixing part 310 and the second fixing part 322 to which the cam is fixed are provided on the fixing part moving linear 308 so as to be slidable, and are moved according to the size of the cam so that the cam is fixed. By adjusting the fixing devices 318 and 328 of the first and second fixing bases 320 and 326 provided in the lower part of the first and second fixing parts 302 and fixing them to the fixing part moving linear 308, the size of the cam is correlated. The cam can be fixed without it.

Then, the arm 354 is pivotally coupled to the arm pivoting part 352 so that the arm support part 360 contacts and fixes the arm fixing part 302 of the polishing gear box 350. When the control unit 200 is operated by operating, the control unit 200 sends an operation time signal to the fixing unit 302 and the polishing unit 340.

At this time, the inner diameter spindle motor 356 of the polishing unit 340 is operated under the control of the controller 200, and the inner diameter grinding wheel 358 directly connected to the rotation shaft of the inner diameter spindle motor 356 is driven. Will be.

Here, the polishing unit 340 is fixed to the Y-axis moving plate 344 movably coupled to the Y-axis base 342 by a transfer means, the inner diameter of the cam under the control of the controller 200 Accordingly, the inner grinding wheel 358 of the polishing unit 340 polishes the inner circumferential surface of the cam by reciprocating in the direction of the Y axis.

In addition, the first fixing part 310 in which the cam is fixed is operated by the cam rotation motor 312 under the control of the controller 200, and the power of the cam rotation motor 312 is the first. The fixed chuck 316 is transmitted to the first fixed chuck 316 by the cam rotation gear box 314 fixed, so that the cam fixed to the first fixed chuck 316 rotates at a constant speed. .

In addition, the first and second fixing parts 302 fixed to the fixed part moving linear 308 is the X axis moving plate 306 to which the fixed part moving linear 308 is fixed to the X axis base 304 The reciprocating movement in the direction of the X-axis by the transfer means provided in the lower portion to transfer the cam in the X-axis direction of the inner diameter grinding wheel 358.

According to the embodiment of the present invention having the configuration and operation as described above, the driving portion and the polishing portion are capable of reciprocating in the X-axis and the Y-axis, respectively, and polish the outer and inner diameters of the cam by the outer and inner grinding wheels. can do.

Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims Various modifications may be made to the invention. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

As described above, the cam polishing machine according to the present invention, the driving portion and the polishing portion can be reciprocated in the X-axis and Y-axis, respectively, the outer diameter grinding wheel for polishing the outer diameter of the cam and the inner grinding wheel for polishing the inner diameter of the cam Each of them is free to process the outer and inner diameters of the cam, and has the effect of ensuring the surface roughness that can be satisfied with various machine tools.

Claims (6)

An X-axis base provided in the X-axis direction of the main body, an X-axis moving plate provided on the upper portion of the X-axis base in a reciprocating manner in the X-axis direction, and provided to reciprocate by a transfer means, and the X-axis moving plate A first fixed base installed at an upper portion of the first fixed base and a fixed part moving linear formed on both sides of the lower side in the longitudinal direction to be inclined inward, and fixed to the one side of the fixed part moving linear by being fixed by sliding; A first fixed chuck is provided to fix the cam to be fixed and fixed to a fixed base, and a cam rotation motor is provided to rotate the first fixed chuck at a constant speed, and the power of the cam rotation boat is transferred to the first fixed chuck. The first fixing part is provided with a cam rotating gear box for transmitting, and the other side of the fixed part moving linear slides in a direction opposite to the first fixing part. The second fixing base is provided with a fixing device is provided to be fixed to the second fixing base, and the second fixing part is fixed to the second fixing base, the second fixing chuck is provided to support the rotation axis of the cam fixed to the first fixing chuck A fixed part provided; Y-axis base provided in the direction orthogonal to the X-axis moving plate of the main body, and Y-axis moving is provided to be reciprocally transferred in the Y-axis direction on the upper portion of the Y-axis base to be reciprocated by a transfer means A plate, an outer diameter wheel for polishing the outer diameter of the cam fixed to the first fixing part provided on the upper surface of the Y-axis moving plate and an outer diameter spindle motor for transmitting power to the outer polishing wheel, and the inner diameter of the cam A polishing unit provided with an inner diameter grinding wheel and an inner diameter spindle motor; And a control unit for controlling the operation of the fixing unit and the polishing unit. delete delete delete The method of claim 1, A grinding gear box in which the outer diameter grinding wheel is mounted on one side of the upper surface of the Y-axis moving plate, an outer diameter spindle motor for supplying power to the polishing gear box on the other side of the upper surface of the Y-axis moving plate, and a power of the outer spindle motor Is provided with a power connecting device for transmitting to the polishing gear box, a pair of arm rotating portion and the rotatable portion rotatably coupled to the upper portion of the polishing gear box, the inner grinding wheel is directly connected to the rotating side end Cam grinding machine, characterized in that the inner diameter spindle motor is provided. delete