KR101419042B1 - Profile process apparatus and method of lift arm - Google Patents

Abstract

The present invention relates to an apparatus for machining a contour of a lift arm and a method of machining the same, and more particularly, to an elevator for an elevator, comprising an input section for receiving information on the degree of contour of a lift arm to be machined, a fixed section for fixing a plurality of lift arms, A control unit for controlling operations of the polishing unit and the grinding stone dressing unit to polish the lift arm based on the contour map information input through the input unit, .
By using the machining apparatus and the machining method of the outline of the lift arm as described above, the present invention can precisely process the outline shape capable of adjusting the amount of lift of the lift arm on one side of the lift arm.

Description

[0001] PROFILE PROCESS APPARATUS AND METHOD OF LIFT ARM [0002]

The present invention relates to a machining apparatus and a machining method of a lift arm, and more particularly to a machining method and a machining method of a lift arm for machining a profile of a lift arm applied to a continuously variable valve lift apparatus of an engine .

A valve mechanism applied to an automobile engine supplies a mixer to the combustion chamber and discharges the combustion gas according to the stroke of the engine.

In recent years, engine performance such as fuel consumption, torque, and output has been improved by optimizing the flow rate of the mixer and the discharge efficiency of the combustion gas by varying the valve opening rate and opening / closing timing according to the operation range of the engine, Variable valve mechanisms have been developed and applied to engines that can be improved and the amount of exhaust gas reduced.

Such a variable valve mechanism for an automobile engine includes a variable valve timing mechanism for varying the opening and closing timing of the valve, a variable valve lift mechanism for varying the opening amount of the valve, and a variable valve operating angle mechanism for changing the valve operating angle.

Among them, the variable valve lift mechanism is intended to improve the output and fuel economy in the high speed mode. The conventional variable valve lift mechanism is a rocker arm type, a pivot type, a tappet type, a bucket type, Method and so on.

The present applicant has proposed a technology relating to a continuously variable valve lifting device of an engine of a tappet type, as disclosed in Korean Patent Registration No. 10-1084739 (published on Nov. 22, 2011, hereinafter referred to as Patent Document 1) 10-1084741 (published on Nov. 22, 2011, hereinafter referred to as Patent Document 2), Korean Patent Publication No. 10-2012-0088363 (published on Aug. 8, 2012, hereinafter referred to as Patent Document 3 And the like.

On the other hand, the lift arm applied to the continuously variable valve lifting device of the engine is a part that adjusts the lift amount of the valve according to the shape of the contour diagram, and is an important part that determines engine performance.

Therefore, it is necessary to develop a technique that can precisely process the contour map of the lift arm.

Korean Patent Registration No. 10-1084739 (Announcement on November 22, 2011) Korean Patent Registration No. 10-1084741 (Announcement on November 22, 2011) Korean Patent Publication No. 10-2012-0088363 (published on August 8, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a lift arm contour machining apparatus and a lift machining apparatus capable of precisely machining a contour map of a lift arm applied to a continuously variable valve- Method.

According to an aspect of the present invention, there is provided an apparatus for processing a lift, including: an input unit for inputting contour map information of a lift arm to be processed; a fixing unit for fixing a plurality of lift arms; A grindstone dressing unit for dressing the grindstone, and an operation unit for controlling operations of the grindstone and the grindstone dressing unit to grind the lift arm based on the outline degree information inputted through the input unit And a control unit.

The fixing unit may include a fixing jig for fixing a plurality of lift arms arranged in a plurality of rows, and the fixing jig may include a fixing block installed on a work table and a fixing unit detachably formed separately from the fixing block. have.

Wherein a pair of V blocks are respectively provided on the front plate and the rear plate of the fixed block, a seating surface is formed between the pair of V blocks, and the fixing unit includes a first A coupling bar, a second coupling bar coupled to the link piece assembler of the lift arm, and a vertical plate having the first coupling bar and the second coupling bar.

The second coupling bar may be installed below the first coupling bar so that a straight line extending from the center of the shaft installation hole of the lift arm and the center of the link piece assembly forms a predetermined horizontal angle and a preset angle.

The grinding unit includes a grinding stone having an outer circumferential surface formed to have a predetermined contour, a drive module for rotating the grinding stone, and a movement module for linearly reciprocating and elevating and lowering the grinding stone to the lift arm or the grinding stone dressing unit. .

The grinding stone dressing portion may include a dresser that rotates to dress the surface of the grinding stone, a driving motor that provides a rotational force to the dresser, and a mobile unit that linearly reciprocates the dresser.

The present invention further includes a cutting oil spraying portion for spraying a cutting oil to the grinding stone dressing portion and the polishing portion, wherein the cutting oil spraying portion includes a cutting oil tank for storing cutting oil, a cutting oil pump for pumping the cutting oil stored in the cutting oil tank, A first spray member for spraying the cutting oil supplied to the grinding stone and a second spray member for spraying the cutting oil to the dresser.

The present invention provides a display apparatus including a display unit for displaying outline information inputted through the input unit and an operation state of a contour diagram machining apparatus of a lift arm, a contour map information input through the input unit, And a storage unit for storing the image data.

According to another aspect of the present invention, there is provided a method of manufacturing a lift arm, comprising the steps of: (a) inputting contour map information of a lift arm to be processed through an input unit; (b) dressing a grinding stone in accordance with the contour map information; (D) forming a curved surface based on the contour map information on the plurality of lift arms fixed to the fixing jig in the step (c); .

(B) or (d) using the cutting oil jetting unit, the cutting oil is sprayed to the polishing unit or the grinding stone dressing unit to cool and lubricate the grinding stone and the dresser, And removing the powder.

(C1) inserting the first and second coupling bars of the fixing means separated from the fixing block of the fixing jig into the shaft installation hole and the link piece assembly hole formed in the plurality of lift arms, and (c2) And fixing the fixing means provided with the plurality of lift arms on a seating surface and a pair of V blocks provided at the upper ends of the front plate and the rear plate of the fixing block.

In the step (c), the contour forming surface of the lift arm may be horizontally installed and fixed.

INDUSTRIAL APPLICABILITY As described above, the present invention is capable of precisely machining an outline shape capable of adjusting the amount of lift of a lift on one side of a lift arm.

In addition, according to the present invention, since the second coupling bar is installed below the first coupling bar to fix the lift arm, the contour of the lift arm can be fixed horizontally.

Accordingly, the present invention can precisely form the contour forming surfaces of a plurality of lift arms at the same time by using the grinding stone, thereby shortening the working time of the lift arm machining operation and improving the workability.

In addition, since the fixing means and the fixing block are separately provided in the fixing jig, the installation and removal operation of the lift arm can be easily performed.

Further, according to the present invention, a plurality of lift arms are installed in parallel and in series, and simultaneously processed, it is possible to shorten the processing time of the lift arm and make mass production possible.

Further, according to the present invention, since the cutting oil is sprayed to the grinding stone and the dresser by using the cutting oil jetting portion, the grinding stone and the dresser can be effectively cooled, the contour of the lift arm and the grinding surface of the grinding stone can be smoothly processed. It is possible to quickly remove the polishing powder.

Accordingly, the present invention has the effect of improving the quality of the product by precisely machining the outline of the lift arm and improving the workability of the lift arm machining operation.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a contour machining apparatus for a lift arm according to a preferred embodiment of the present invention; Fig.
FIG. 2 is a perspective view of the machining portion, the polishing portion, and the grinding stone dressing portion shown in FIG. 1;
3 is an exploded perspective view showing the fixing jig of the fixing part shown in Fig. 1,
FIG. 4 is an operational state view showing a state where the lift arm is installed on the fixing jig shown in FIG. 3;
FIG. 5 is a flow chart for explaining steps of a method of machining a contour machining apparatus of a lift arm according to a preferred embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A detailed description will now be given, with reference to the accompanying drawings, of a processing apparatus and a processing method for a contour diagram of a lift arm according to a preferred embodiment of the present invention.

FIG. 1 is a block diagram of a lift arm contour machining apparatus according to a preferred embodiment of the present invention, FIG. 2 is a perspective view of a machining portion, a polishing portion and a grinding stone dressing portion shown in FIG. 1, FIG. 4 is an operational state diagram showing a state where a lift arm is installed on the fixing jig shown in FIG. 3. FIG.

1 and 2, the processing apparatus 20 includes an input unit 21 for receiving contour map information of a lift arm 10 to be processed, A fixing part 23 for fixing a plurality of lift arms 10 and a grinding part 24 for grinding a plurality of lift arms 10 simultaneously using the grinding stone 40 to form a contour figure, A grinding stone dressing unit 25 for dressing according to the outline information and a grinding unit 24 and a grinding stone dressing unit 25 for grinding the lift arm 10 according to the outline degree information inputted through the input unit 21. [ And a control unit 28 for controlling the operation of the apparatus.

(Hereinafter abbreviated as 'a lift arm contour machining apparatus') 20 according to a preferred embodiment of the present invention includes a contour map information input unit 21 and a lift arm A display unit 22 for displaying the operation state of the contour mapping apparatus 20 and a storage unit 22 for storing contour map information inputted through the input unit 21 and various programs for performing the contour map processing operation of the lift arm 27).

In addition, the contour diagram of the lift arm according to the preferred embodiment of the present invention may further comprise a cutting oil dispensing portion 26 for spraying a cutting oil to the grinding stone dressing portion 25 and the polishing portion 24 have.

The input unit 21 receives various commands for operating the contour of the lift arm 20, and may include various switches and buttons such as a power switch and an outline setting button.

The display unit 22 may include a setting screen for inputting the outline map information through the input unit 21 and a display panel (not shown) for displaying the operation status screen of the contour diagram of the lift arm 20 .

At one side of the lift arm 10, a curved surface is formed which is in contact with the upper end of the valve installed in the engine to adjust the amount of valve lift (see FIG. 4).

The contour diagram of the lift arm according to the present embodiment is a device for forming a curved surface having a predetermined contour in the lift arm 10, and hereinafter the curved surface will be referred to as a contour forming surface 11.

The contour map information may include a rate of change in the x-, y-, and z-axis directions for forming the contour map forming surface 11 as a curved surface.

The lift arm 10 is formed with a shaft installation hole 12 in which a control shaft is installed and a link piece assembler 13 in which a link piece is hinge-rotatably assembled.

The fixing portion 23 may include a fixing jig 30 for fixing the plurality of lift arms 10 arranged in a plurality of rows, as shown in Fig.

3, the fixing jig 30 may include a fixing block 31 mounted on a work table and a fixing means 32 detachably and detachably attached to the fixing block 31. [

In the present embodiment, a pair of V blocks 33 are provided on the front plate and the top plate of the rear block of the fixing block 31 so that the plurality of lift arms 10 can be installed in two rows in the fixing jig 30, Between the pair of V blocks 33, there can be formed a seating surface 34 on which the second coupling bar 36 of the fixing means 32 to be described below is seated.

The fixing means 32 includes a first coupling bar 35 coupled to the shaft mounting hole 12 of the lift arm 10 and a second coupling bar 36 coupled to the link piece assembler 13 of the lift arm 10 And a vertical plate 37 on which a first coupling bar 35 and a second coupling bar 36 are installed.

The first coupling bar 35 is formed to have the same outer diameter as the diameter of the shaft mounting hole 12 and is connected to the V-block (not shown) provided on the front plate of the fixed block 31 and the upper plate of the rear plate 33).

The second coupling bar 36 is manufactured to have the same outer diameter as the diameter of the link piece assembler 13 and is seated on the seating surface of the fixed block 31 while being coupled to the vertical plate 37.

The second coupling bar 36 is connected to the first coupling bar 35 so that a straight line extending from the center of the shaft installation hole 12 and the link piece assembly hole 13 of the lift arm 10 is in a horizontal state, As shown in Fig.

Here, the setting angle is an angle set to horizontally set the contour surface 11 of the lift arm 10.

As described above, according to the present invention, since the second coupling bar is installed below the first coupling bar and the lift arm is fixed, the contour forming surface of the lift arm can be fixed horizontally.

Accordingly, the present invention can precisely form the contour forming surfaces of a plurality of lift arms at the same time by using the grinding stone, so that the work time of the contour of the lift arm can be shortened and the workability can be improved.

Further, since the fixing means and the fixing block are separately provided in the fixing jig, the installation and the removal operation of the lift arm can be easily performed.

On the other hand, in the present embodiment, as shown in Fig. 2, a pair of fixing jigs 30 may be provided in parallel.

2, the grinding unit 24 includes a grinding stone 40, a driving module (not shown) for rotating the grinding stone 40, (Not shown) for linearly reciprocating and elevating the lift arm 10 and the grinding stone dressing portion 25 fixed to the fixing portion 23 by a moving mechanism 40.

The grinding stone dressing unit 25 forms a contour map corresponding to the contour map information input through the input unit 21 on the surface of the grinding stone 40 according to a control signal of the control unit 28. [

The grinding stone dressing unit 25 may be configured such that when glazing or loading occurs in the grinding stone 40 during the operation of forming the contour of the lift arm 10 using the grinding stone 40, It may serve to dress the surface of the grinding stone 40. [

The grinding stone dressing portion 25 includes a dresser 41 for dressing the surface of the grinding stone 40 by rotating and a drive motor for providing a rotational force to the dresser 41 in accordance with a control signal of the control portion 28 And a moving unit 42 for reciprocating the dresser 41 linearly.

As shown in FIG. 2, the coolant spraying section 26 supplies coolant to the grinding section 24 and the grinding stone dressing section 25 to cool and lubricate the grinding wheel 24 and remove the grinding powder generated during the grinding operation .

The coolant sprayer 26 includes a coolant tank for storing coolant, a coolant pump for pumping the coolant stored in the coolant tank according to a control signal from the controller 28, And a second jetting member 44 for jetting the cutting oil to the dresser 41. The first jetting member 43 may be provided with a plurality of openings.

The control unit 28 stores the contour map information input through the input unit 21 in the storage unit 27 and drives the program stored in the storage unit 27 so that the contour of the lift arm can be detected .

Particularly, the control unit 28 controls the operation of the polishing unit 24 so as to form the contour drawing surface 11 of the lift arm 10 as a curved surface according to the contour diagram information, The operation of the polishing unit 24 and the grinding stone dressing unit 25 can be controlled so as to dress the surface of the grinding stone 40 by moving the grinding stone 40 to the grinding stone dressing unit 25. [

The control unit 28 smoothes and polishes the grinding stone 40 and the dresser 41 during operation of the grinding unit 24 and the grinding stone dressing unit 25 to smoothly grind the grinding surface, It is possible to control the operation of the coolant spraying portion 26 so that the coolant spraying portion 26 can be removed.

 Next, referring to FIG. 5, a processing method of a contour diagram machining apparatus of a lift arm according to a preferred embodiment of the present invention will be described in detail.

FIG. 5 is a flowchart for explaining steps of a method of machining a contour machining apparatus of a lift arm according to a preferred embodiment of the present invention.

5, the input unit 21 receives the outline map information of the lift arm 10 to be formed.

At this time, the display unit 22 displays the outline information inputted through the input unit 21 on the screen, and the control unit 28 controls the storage unit 27 to store the outline information.

The control unit 28 controls the polishing unit and the grinding stone dressing unit 25 so as to form a curved surface according to the outline degree information on the surface of the grinding stone 40. [

The moving unit 42 of the grinding stone dressing unit 25 linearly moves the dresser 41 in the left and right direction in accordance with the control signal of the control unit 28 and the dresser 41 rotates to rotate the grinding stone 40 A dressing operation is performed in which the surface is formed into a curved surface according to the contour map information (S12).

The worker is provided with a pair of first and second coupling bars 35 and 36 provided on the fixing means 32 of the fixing portion 23 as the shaft mounting holes 12 and 12 formed respectively in the plurality of lift arms 10, Is inserted into the one-side assembly hole (13).

As described above, the fixing means 32 to which the plurality of lift arms 10 are coupled is seated on the fixing block 31 and fixed.

At this time, both ends of the pair of first coupling bars 35 provided on the fixing means 32 are seated on a pair of V blocks 33 provided at the upper ends of the front plate and the rear plate of the fixing block 31, Both ends of the pair of second coupling bars 36 are seated and fixed on a seating surface 34 provided between the pair of V blocks 33.

Since the second coupling bar 36 is installed below the first coupling bar 35, a straight line connecting the center of the shaft installation hole 12 of the lift arm 10 and the center of the link piece assembly hole 13 is a horizontal plane And a predetermined setting angle.

Thus, the lift arm 10 is fixed in a state in which the contour forming surface 11 is horizontal (S13).

The control unit 28 controls the moving module of the polishing unit 24 to place the grinding stone 40 on the contour forming surface 11 of the lift arm 10 and then rotates the grinding stone 40 And controls the drive module.

Thus, the contour forming surface 11 of the lift arm 10 is formed into a curved surface according to the contour diagram information input through the input unit 21 (S14).

When the operation of forming the contour of the lift arm 10 is completed through the above process, the worker separates the fixing means 32 of the fixing jig 30 from the fixing block 31, The lift arm 10 is taken out (S15).

If glazing or loading occurs in the grinding stone 40 during the operation of forming the contour of the lift arm 10 using the grinding stone 40, the control unit 28 controls the grinding stone 40 The dresser may control the grinding stone dressing portion 25 so as to dress the surface of the grinding stone dressing portion 25.

The control unit 28 controls the operation of the cutting oil dispensing unit 26 to spray the cutting oil to the grinding stone 40 and the dresser 41 in the process of forming the contour of the lift arm 10 in step S12 Driving can be controlled.

The grinding stone 40 and the dresser 41 are cooled by the cutting oil so that the contour of the lift arm 10 and the grinding surface of the grinding stone 40 are smoothly processed, The abrasive powder is collected by the cutting oil and flows downward along with the cutting oil to be removed.

The control unit 28 controls to repeatedly execute the steps S10 to S15 until the power switch provided on the input unit 21 is turned off or a stop command for stopping the outline forming operation is input.

If the power switch of the input unit 21 is turned off or a contour forming operation stop command is input, the control unit 28 controls the contour of the lift arm to stop driving the machining apparatus 20 and terminate.

Through the above-described process, the present invention can precisely process the outline shape capable of adjusting the amount of lift of the lift on one side of the lift arm.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to a technique for precisely machining a contour figure capable of adjusting the amount of lift of a lift on one side of a lift arm for a continuously variable valve lift apparatus of an engine.

10: lift arm 11: contour forming surface
12: shaft installation hole 13: link assembly assembly
20: Outline machining device of lift arm
21: input unit 22:
23: fixing part 24: polishing part
25: Grinding stone dressing portion 26: Cutting oil spraying portion
27: storage unit 28: control unit
30: Fixing jig 31: Fixing block
32: fixing means 33: V block
34: seat surface 35: first coupling bar
36: second coupling bar 37: vertical plate
40: Grinding stone 41: Dresser
42: moving unit 43: first injection member
44: second injection member

Claims (12)

An input unit 21 for receiving information on the contour map of the lift arm 10 to be processed,
A fixing portion 23 for fixing a plurality of lift arms 10,
A grinding section 24 for grinding a plurality of lift arms 10 simultaneously using the grinding stone 40 to form a contour map,
A grinding stone dressing unit 25 for dressing the grinding stone 40,
A control unit 28 for controlling operations of the polishing unit 24 and the grinding stone dressing unit 25 so as to grind the lift arm 10 based on the contour map information input through the input unit 21,
And a cutting oil spraying portion 26 for spraying the cutting oil to the grinding stone dressing portion 25 and the grinding portion 24 so as to cool and lubricate the grinding stone 40 and the dresser 41 and to remove the grinding powder in the grinding process Features of the lift arm contour machining device. The method according to claim 1,
The fixing portion 23 includes a fixing jig 30 for fixing a plurality of lift arms 10 arranged in a plurality of rows,
The fixing jig (30) includes a fixing block (31) and a fixing block
And a fixing means (32) detachably and detachably attached to the fixed block (31). 3. The method of claim 2,
A pair of V blocks 33 are provided on the front plate and the top plate of the fixed block 31, respectively,
A seating surface 34 is formed between the pair of V blocks 33,
The fixing means 32 includes a first coupling bar 35 coupled to the shaft mounting hole 12 of the lift arm 10,
A second coupling bar 36 coupled to the link piece assembler 13 of the lift arm 10,
And a vertical plate (37) provided with the first coupling bar (35) and the second coupling bar (36). The method of claim 3,
The second coupling bar 36 is formed so that a straight line extending from the center of the shaft installation hole 12 and the link piece assembly hole 13 of the lift arm 10 is in a horizontal state, 35). ≪ / RTI > The polishing apparatus according to claim 1, wherein the polishing section (24)
A grinding stone 40 having an outer circumferential surface formed to have a predetermined outline,
A drive module for rotating the grinding stone 40,
And a moving module for linearly reciprocating and elevating the grinding stone 40 to the lift arm 10 fixed to the fixing portion 23 or the grinding stone dressing portion 25. [ Device. 2. The dressing machine according to claim 1, wherein the grinding stone dressing portion (25)
A dresser 41 for dressing the surface of the grinding stone 40 by rotational motion,
A driving motor for providing rotational force to the dresser 41,
And a moving unit (42) for linearly reciprocating the dresser (41). 7. The apparatus according to claim 6, wherein the coolant jetting portion (26)
A coolant tank for storing coolant,
A coolant pump for pumping coolant stored in the coolant tank,
A first jetting member 43 for jetting the cutting oil pumped from the coolant pump to the grinding stone 40,
And a second injection member (44) for spraying the cutting oil to the dresser (41). The method according to claim 1,
A display section 22 for displaying the contour map information inputted through the input section 21 and the contour diagram of the lift arm,
Further comprising a storage unit (27) for storing the profile information inputted through the input unit (21) and a program for performing the profile operation of the profile of the lift arm. (a) inputting contour map information of a lift arm to be processed through an input unit,
(b) dressing the grinding stone in accordance with the outline information,
(c) installing and fixing a plurality of grinding stones in series and in parallel to the fixing jig of the fixing portion,
(d) forming a curved surface based on the contour map information on the plurality of lift arms fixed to the fixing jig in the step (c); and
(e) In the process (b) or (d) of performing the step (b) or the step (d) using the cutting oil jetting unit, the cutting oil is sprayed to the polishing unit or the grinding stone dressing unit to cool and lubricate the grinding stone and the dresser, Wherein said step of machining a contour of said lift arm comprises the steps of: delete 10. The method of claim 9, wherein step (c)
(c1) inserting the first and second coupling bars of the fixing means separated from the fixing block of the fixing jig into the shaft installation hole and the link piece assembly hole formed respectively in the plurality of lift arms, and
(c2) a step of securing and securing a fixing means provided with a plurality of lift arms to a pair of V-blocks and a seating surface provided at the upper ends of the front plate and the rear plate of the fixing block, Machining method. 10. The method of claim 9,
Wherein the outline forming surface of the lift arm is horizontally installed and fixed in the step (c).

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