KR20140017242A - Cam curved surface machining apparatus and method - Google Patents

Cam curved surface machining apparatus and method Download PDF

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Publication number
KR20140017242A
KR20140017242A KR1020120083912A KR20120083912A KR20140017242A KR 20140017242 A KR20140017242 A KR 20140017242A KR 1020120083912 A KR1020120083912 A KR 1020120083912A KR 20120083912 A KR20120083912 A KR 20120083912A KR 20140017242 A KR20140017242 A KR 20140017242A
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KR
South Korea
Prior art keywords
cam
curved surface
rotary table
machining center
processing
Prior art date
Application number
KR1020120083912A
Other languages
Korean (ko)
Inventor
신윤은
Original Assignee
경성산업(주)
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Publication date
Application filed by 경성산업(주) filed Critical 경성산업(주)
Priority to KR1020120083912A priority Critical patent/KR20140017242A/en
Publication of KR20140017242A publication Critical patent/KR20140017242A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/08—Milling cams, camshafts, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/31—Diamond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2260/00—Details of constructional elements
    • B23C2260/12—Cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
    • B23C2270/08—Clamping mechanisms or provision for clamping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The present invention relates to a cam curved surface processing apparatus and a method thereof, and more specifically, to a cam curved surface processing apparatus and a method thereof, which facilitate attachment and detachment of a cam to a rotary table of an existing machining center, and performs precise cam curved surface polishing processing by additionally having a cam processing member. The present invention relates to a machining center having a rotary table for processing a cam, which comprises a cam fixing member fixed to be attachable/detachable to the rotary table and capable of fixing a cam on the top; and a cam processing member installed in the upper inside of the machining center to be positioned on the top of the rotary table, so that the cam curved surface is polished precisely. The present invention is characterized in comprising a cam fixing step of fixing a cam to the cam fixing member; a cam semi-finishing step of semi-finishing the outer side of the cam and forming the curved surface of the cam; a cam heat processing step of treating the cam with heat after the cam semi-finishing; and a cam polishing step of polishing the cam curved surface after the cam heat processing.

Description

Cam Curved Surface Machining Apparatus and Method

The present invention relates to a cam curved processing apparatus and method, and more particularly, a cam curved processing apparatus for easily attaching and detaching a cam to a rotary table of an existing machining center, and further comprising a cam processing member to achieve precise cam curved polishing. And to a method.

In general, a machining center refers to a complex machine tool, and refers to a multifunctional NC machine tool that performs various machining operations while automatically exchanging various types of tools among NC (NC) machines.

In addition, the machining center typically includes a horizontal moving plate that moves horizontally.

The general machining center includes an input unit for inputting a shape of a product requiring processing, and a control unit for controlling the speed of the horizontal moving plate and the feed speed of the tool so as to process according to the input shape.

However, there is a problem in that the machining center is not equipped with a rotary table so that a cam having an elliptical shape, rather than a simple circle, cannot be processed.

Therefore, in order to process the cam having the shape of an ellipse as described above, a machine that performs only a separate cam machining must be used, so the machining cost of the cam increases and the factory must purchase a cam processing machine in addition to the machining center. There was a problem.

In order to solve such a conventional problem, the applicant has pre-registered No. 20-0436117 (a machining center in which a rotary table is placed), which will be described below with reference to FIG. 1.

As shown in FIG. 1, a machining center (hereinafter referred to as a cam processing device) 1 having a rotary table settled in the configuration of a machining center body 10, which is a conventional machining center, includes a rotary table 20 and an input unit ( 30) and the control unit 40 further has a structure.

The horizontal machining plate 12 moves horizontally to the existing machining center body 10. The rotary table 20 includes a frame 22, a motor 24, a rotating disc 26, And a flow groove 28.

In addition, the frame 22 is placed on the horizontal movable plate 12 of the machining center body 10, the motor 24 is mounted on the frame 22.

The rotary table 20 is rotated by receiving a rotational force provided from the motor 24, and is supported by the frame 22.

The flow groove 28 is provided as a groove which is dug downward from the upper surface of the rotation disk 26, is formed at regular intervals radially along the outer periphery of the rotation disk (26).

The cam processing apparatus for processing the conventional cam comprised as mentioned above has the effect that it can process a cam which has an elliptical shape simply by attaching a rotary table to an existing machining center.

However, the conventional cam processing apparatus requires only a grinding device for grinding the curved surface of the cam by only grinding the cam by using a tool of the existing machining center 1.

In addition, the polishing apparatus for grinding the curved surface of the cam typically polishes the curved surface of the cam precisely using abrasive stones.

However, in the conventional abrasive stone, since the abrasive stone is worn when the cam surface is polished, a deviation occurs due to the wear of the abrasive stone when the cam curved surface is polished, and thus the cam curved surface cannot be precisely polished.

In addition, there is a problem that precise cam curved machining is not easy with a conventional polishing apparatus when polishing a large cam curved surface such as a cam used in a ship.

Therefore, there is a need for a cam processing apparatus that can easily polish the cam curved surface using existing equipment without any additional equipment, and in particular, can precisely process the cam curved surface of a ship cam having a large size.

An object of the present invention is to solve the problems of the prior art, the cam is easy to attach and detach the rotary table of the existing machining center, and further comprises a cam processing member to provide a cam curved mill factory for precise cam curved grinding processing do.

Cam surface processing apparatus according to the present invention is a machining center equipped with a rotary table for machining the cam, the removable fixing on the rotary table, the cam fixing member capable of fixing the cam on top; And a cam processing member provided inside the machining center and rotated to be positioned above the rotary table, so that the cam curved surface is precisely ground.

In the present invention, the cam fixing member is provided in a cylindrical shape, at least one or more support members are preferably provided to extend or receive outside.

In the present invention, the cam fixing member is preferably provided so that the cam is detachably fixed to the upper portion by the electromagnetic force.

In the present invention, the cam processing member is preferably composed of a cylindrical diamond wheel.

In the present invention, it is preferable that the cam is machined by the tool of the machining center body, and the cam curved surface is precisely polished by the cam processing member.

Cam surface processing method according to the present invention comprises a cam fixing step of the cam is fixed to the cam fixing member; A cam intermediate step of forming a curved surface of the cam by grinding the outside of the cam; A cam heat treatment step of heat treating the cam after the cam medium cutting process; And a cam polishing step of polishing the cam curved surface after the cam heat treatment.

The cam curved processing apparatus and method according to the present invention can precisely grind the cam by using the existing machining center without the need for the equipment for grinding the cam separately, thereby reducing the work efficiency and the cost of equipment purchase. It works.

In addition, since the wear of the diamond wheel hardly occurs due to the firmness of the diamond wheel when the cam is polished, there is an excellent effect of precisely grinding the curved surface of the cam within the programmed range error.

1 is a perspective view showing a conventional cam processing apparatus.
Figure 2 is a front view schematically showing a cam curved surface processing apparatus according to the present invention.
3 is a perspective view illustrating a state in which a cam curved surface is processed by the cam curved processing apparatus of FIG. 2;
Figure 4 is a perspective view showing a part of the cam machined by the cam curved surface processing apparatus according to the present invention,
(a) and (b) show fuel cams and exhaust cams.
Figure 5 is a front view schematically showing another embodiment of the cam curved surface processing apparatus according to the present invention.
Figure 6 is a flow chart showing a machining sequence sequentially in accordance with the cam curved machining method according to the present invention.

Hereinafter, a cam curved processing apparatus according to the present invention with reference to the drawings in detail.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

As shown in FIG. 2, the cam surface processing apparatus 100 according to the present invention includes a rotary table 104, a horizontal movable plate 106, and a cam for processing a cam 102 on an existing machining center body 110. The input unit 108 and the control unit 109 are provided.

In addition, as shown in FIG. 3, the fixing member 120 fixed to the rotary table 104 to fix the cam 102, and the cam working member 140 to polish the curved surface of the cam 102. ) Is further provided.

The cam fixing member 120 is preferably provided in a cylindrical shape, which can be changed in various forms by an example.

The cam fixing member 120 has at least three or three or more support members 122 arranged on the upper side thereof, and is provided to support the bottom of the cam 102 by being slid outwardly.

The slide conveyance of the support member 122 is preferably configured to allow the user to easily slide out of the support member 122 using a mechanism such as a hexagonal wrench (not shown) in the same manner as the chuck slide conveyance of an existing shelf. Do.

In addition, the cam fixing member 120 is fixed to the existing rotary table 104, it is more preferable that the electromagnetic force is generated or removed by an external power source for fixing the cam 102.

The cam machining member 140 is rotated by a motor 142 further provided on the upper portion of the machining center body 110, and a cylindrical diamond wheel 144 extending downward in the machining center body 110. Is configured to be provided to be positioned above the rotary table (104).

Cam surface processing apparatus 100 of the present invention configured as described above is forging, roughing and primary heat treatment, middle machining, cam heat treatment and the cam cam 102 fixed to the rotary table 104 fixed cam It is seated on the upper member 120.

Then, the support member 122 provided in the cam fixing member 120 is projected to the outside to support the lower portion of the cam.

Preferably, the cam 102 is seated so that the centers of the inner diameters of the cam fixing member 120 and the cam 102 exactly match each other.

Thereafter, the cam fixing member 120 may be powered by an external power source to have a strong electromagnetic force, thereby firmly fixing the cam 102.

As described above, the rotary table 104 is moved to the diamond wheel 144 provided in the upper portion of the machining center body 110 while the cam 102 is fixed to the cam fixing member 120. The diamond wheel 144 is to be polished.

At this time, the curved surfaces of the various cams 102 as shown in FIG. 4 are precisely polished by the linear movement of the horizontal moving plate 106, the rotation of the rotary table 104, and the rotation of the diamond wheel 144.

In addition, since the wear of the diamond wheel 144 hardly occurs due to the firmness of the diamond wheel 144 when the cam 102 is polished, the curved surface of the cam 102 may be precisely ground and processed within a programmed range error. .

It is most preferable that the curved machining error range of the cam 102 is precisely processed within ± 0.05mm.

Therefore, the cam curved processing apparatus according to the present invention can precisely grind the cam by using an existing machining center without the need for the equipment for grinding the cam separately.

Figure 5 is a front view schematically showing another embodiment of the cam processing apparatus according to the present invention, the configuration and operation relationship is similar to one embodiment of the present invention described with reference to Figures 1 to 4 in detail Description is omitted.

However, as shown in FIG. 5, the tool 112 is further provided in the machining center body 110 to process the first heat-treated cam, and may be precisely polished by the diamond wheel 144. It is configured to be.

Therefore, as shown in FIG. 5, in the state where the cam 102 is fixed to the cam fixing member 120, the curved surface of the cam 102 is ground by the tool 112 provided in the machining center body 110. The shape of the cam 102 is processed.

Then, when the machining of the cam 102 is finished, the rotary table 104 is moved to the diamond wheel 144 provided in the upper portion of the machining center main body 110, so that the curved surface of the cam 102 moves to the diamond wheel 144. To be polished.

At this time, the curved surfaces of the various cams 102 as shown in FIG. 4 are precisely polished by the linear movement of the horizontal moving plate 106, the rotation of the rotary table 104, and the rotation of the diamond wheel 144.

Therefore, the cam surface processing apparatus of another embodiment according to the present invention can precisely grind the cam immediately after the cam is ground with one piece of equipment without the need for the equipment for grinding the cam separately.

Moreover, the medium cutting and polishing can be performed at once by the program once input without the need to re-enter the shape of the cam once programmed.

In addition, since the cam is easily removed from the cam holding member after the cam is ground or polished, the cam polishing operation can be performed without the need for additional equipment.

Cam surface processing method according to the present invention is made by the sequence as shown in Figure 6, which will be described in detail as follows.

The cam curved machining method according to the present invention is made by the cam curved machining apparatus 100 according to the present invention.

The cam curved processing method includes a cam fixing step (S10), a cam medium cutting step (S20), a cam heat treatment step (S30), and a cam polishing step (S40).

The cam fixing step (S10), first, the cam fixing member 120 is fixed to the cam surface processing unit 100, the cam 102, the forging, roughing and primary heat treatment is fixed on the rotary table 104 The cam 102 is fixed by the electromagnetic force of the cam fixing member 120 in a state where the bottom surface of the cam is supported by the support member 122.

The cam grinding step (S20) is a curved surface of the cam 102 in accordance with the shape of the cam 102 input to the control unit 109 and the input unit 108 by the tool 112 provided in the machining center body 110. It is to process.

At this time, the curved surface of the cam 102 is roughed in accordance with the shape of the cam 102 programmed by the movement of the horizontal moving plate 106 and the rotation speed of the rotary table 104 provided in the machining center body 110. Processed.

The cam heat treatment step (S30) is immersed for hardening for 3 to 5 hours at 800 ℃ to 900 ℃ by receiving the cam 102, the cam finishing step (S20) in the furnace.

The cam heat treatment step (S40) is more preferably performed for 4 hours at 850 ℃ in the furnace.

Of course, the cam heat treatment step (S40) may of course perform the cam polishing step (S30) after the cam 102 heat treatment after the cam medium step (S20).

In the cam polishing step S40, after the heat treatment of the cam 102 is completed, the curved surface of the cam is polished by the diamond wheel 144 provided in the upper portion of the machining center body 110.

At this time, the curved surfaces of the various cams 102 programmed for the linear movement of the horizontal moving plate 106 and the rotation of the rotary table 104 and the rotation of the diamond wheel 144 are precisely polished.

As described above, the cam polishing step is completed, the cam is finished by inspecting the cam after finishing the inspection.

Therefore, the cam curved machining method according to the present invention can precisely grind the cam by the cam working member provided in the machining center without the need for the equipment for grinding the cam separately.

In addition, since the wear of the diamond wheel hardly occurs when the cam wheel is polished, the curved surface of the cam can be precisely polished and processed within an error within the programmed range.

Furthermore, according to another embodiment of the cam working apparatus of the present invention, the medium machining and the polishing may be performed at once by the program input once without the need to re-enter the shape of the cam programmed once.

What has been described above is just one embodiment for carrying out the cam surface processing apparatus and method according to the present invention, the present invention is not limited to the above-described embodiment, the gist of the invention claimed in the claims below Without departing from the scope of the present invention to those skilled in the art will be able to implement a variety of modifications to the technical spirit of the present invention.

100: cam surface processing apparatus 102: cam
104: rotary table 106: horizontal moving plate
108: input unit 109: control unit
110: machining center body 112: tool
120: cam fixing member 122: support member
140: cam processing member 142: motor
144: diamond wheel

Claims (6)

In a machining center equipped with a rotary table for machining a cam,
A cam fixing member detachably fixed to the rotary table and capable of fixing the cam to an upper portion thereof; And
Cam cam processing apparatus, characterized in that the cam surface is further polished precisely is further provided by a cam processing member provided to rotate inside the upper portion of the machining center to be positioned above the rotary table.
The method of claim 1,
The cam fixing member is provided in a cylindrical shape, cam surface processing apparatus characterized in that the at least one or more support members are provided to extend or accommodate the outside.
3. The method according to claim 1 or 2,
The cam fixing member is a cam curved processing device, characterized in that the cam is provided to be detachably fixed to the upper portion by the electromagnetic force.
The method of claim 1,
The cam processing member is a cam surface processing apparatus, characterized in that consisting of a cylindrical diamond wheel.
The method according to claim 1 and 2 or 4,
The cam curved surface machining apparatus characterized in that the cam is rough-cut by the tool of the machining center body, the cam curved surface is precisely polished by the cam processing member.
A cam fixing step of fixing the cam to the cam fixing member;
A cam intermediate step of forming a curved surface of the cam by grinding the outside of the cam;
A cam heat treatment step of heat treating the cam after the medium machining of the cam;
And a cam polishing step of polishing the cam curved surface after heat treatment of the cam.
KR1020120083912A 2012-07-31 2012-07-31 Cam curved surface machining apparatus and method KR20140017242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120083912A KR20140017242A (en) 2012-07-31 2012-07-31 Cam curved surface machining apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120083912A KR20140017242A (en) 2012-07-31 2012-07-31 Cam curved surface machining apparatus and method

Publications (1)

Publication Number Publication Date
KR20140017242A true KR20140017242A (en) 2014-02-11

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KR1020120083912A KR20140017242A (en) 2012-07-31 2012-07-31 Cam curved surface machining apparatus and method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116984666A (en) * 2023-09-26 2023-11-03 南通百盛精密机械有限责任公司 Milling device for processing wind driven generator blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116984666A (en) * 2023-09-26 2023-11-03 南通百盛精密机械有限责任公司 Milling device for processing wind driven generator blade
CN116984666B (en) * 2023-09-26 2023-12-01 南通百盛精密机械有限责任公司 Milling device for processing wind driven generator blade

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