KR20170007917A - Valve spindle fixing chuck for valve spindle grinding apparatus - Google Patents

Valve spindle fixing chuck for valve spindle grinding apparatus Download PDF

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Publication number
KR20170007917A
KR20170007917A KR1020150098930A KR20150098930A KR20170007917A KR 20170007917 A KR20170007917 A KR 20170007917A KR 1020150098930 A KR1020150098930 A KR 1020150098930A KR 20150098930 A KR20150098930 A KR 20150098930A KR 20170007917 A KR20170007917 A KR 20170007917A
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KR
South Korea
Prior art keywords
valve spindle
rotary
valve
polishing apparatus
spindle
Prior art date
Application number
KR1020150098930A
Other languages
Korean (ko)
Inventor
김병국
Original Assignee
김병국
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김병국 filed Critical 김병국
Priority to KR1020150098930A priority Critical patent/KR20170007917A/en
Publication of KR20170007917A publication Critical patent/KR20170007917A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
    • B24B15/04—Machines or devices designed for grinding seat surfaces; Accessories therefor on valve members

Abstract

The present invention relates to a valve spindle fixing chuck capable of easily fixing a valve spindle to a central portion of a rotary holding body of a valve spindle polishing apparatus of a marine diesel engine.
The valve spindle fixing chuck for a valve spindle polishing apparatus according to the present invention is a valve spindle polishing apparatus for a valve spindle polishing apparatus for inserting a valve spindle of a marine diesel engine into a rotary holder, And is detachably mounted on a lower portion of the rotary support body so as to be able to fix the valve spindle to the center of the rotary support body.
It is also preferable that the valve spindle fixing chuck includes a cylindrical spin holding part and a flange. The spin holding part is inserted into the rotary holding body and the valve spindle is inserted therein to urge the valve spindle to be positioned at the center of the rotary holding body. The flange is formed at one end of the spin holding part and detachably mounted to the lower part of the rotary holding part.
According to the present invention, when the valve spindle holding chuck is inserted into the rotary holding body of the valve spindle polishing apparatus and the valve spindle is inserted into the valve spindle holding chuck, the valve spindle is naturally positioned at the center of the rotary holding body. Therefore, the valve spindle can be easily positioned at the center of the rotary holder.

Description

Technical Field The present invention relates to a valve spindle fixing chuck for a valve spindle polishing apparatus,

The present invention relates to a valve spindle holding chuck for a valve spindle polishing apparatus for a marine diesel engine, and more particularly to a valve spindle holding chuck for a valve spindle grinding apparatus for a marine diesel engine, will be.

Fig. 4 is a valve spindle and bottom piece grinding apparatus of a large diesel engine disclosed in Japanese Laid-Open Patent Publication No. 10-2006-0026743, Fig. 5 is a view showing a rotating state of the valve spindle in the polishing apparatus shown in Fig. Fig.

The valve spindle grinding apparatus rotates the rotary holder 6 to the drive motor 17 by inserting the valve spindle 49 into the rotary holder 6 and then fixing the valve spindle 49 to the rotary holder 6 And the valve spindle 49 is polished with the charcoal 43. The valve spindle 49 must be fixed to the rotary holder 6 and the valve spindle 49 must be accurately positioned at the center of the rotary holder 6 in order to polish the valve spindle 49 with the barrel 43 It should be fixed. This is because the valve spindle 49 becomes eccentric when it deviates from the center of the rotary holder 6 and can not accurately grind the valve spindle 49 using the charcoal 43. [ The conventional valve spindle polishing apparatus includes a valve chuck bolt 16 arranged at a predetermined interval along the circumferential direction of the rotary holder 6 to fix the valve spindle 49 to the center of the rotary holder 6, Were used. That is to say a plurality of valve chuck bolts 16 are screwed into the rotary holder 6 until the ends abut on the outside of the valve spindle 49 to fix the valve spindle 49 to the rotary holder 6 .

In the case of the conventional valve spindle polishing apparatus, a plurality of valve chuck bolts 16 are screwed to the rotary holder 6 to fix the valve spindle 49 to the rotary holder 6. [ At this time, the operator positions the valve spindle 49 at the center of the rotary holder 6 by screwing a specific one of the valve chuck bolts 16, and screwing the remaining valve chuck bolts 16 along the circumferential direction, Thereby fixing the spindle 49 to the rotary holder 6. [ In this case, since the operator places the valve spindle 49 in the center of the rotary holder 6 by screwing the valve chuck bolt 16 in a feeling, the valve spindle 49 could not be positioned correctly. Therefore, in order to position the valve spindle 49 at the center of the rotary holder 6, a plurality of valve chuck bolts 16 must be wound and unwound several times to trial and error. Therefore, in the case of the conventional valve spindle polishing apparatus, it takes a considerable amount of time to position the valve spindle 6 in the center of the rotary holder 6, and it is necessary to determine whether the valve spindle 49 is located at the center of the rotary holder 6 There is a problem that it is difficult to judge.

The valve spindle 49 used in marine diesel engines has a variety of diameters ranging from 35 mm to 60 mm. In the case of the conventional polishing apparatus for polishing the valve spindle 49, when a valve spindle 49 having a diameter of 35 mm is inserted into a rotary holder 6 for polishing a valve spindle having a diameter of 60 mm, (49) could not be fixed. Therefore, it is necessary to use a valve spindle polishing apparatus which is conventionally suitable for each size of the valve spindle 49. Therefore, when the size of the valve spindle 49 is changed, there is a problem that the valve spindle polishing apparatus must also be equipped with a polishing apparatus suited to its size.

The present invention is intended to solve the above problems. SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve spindle fixing chuck capable of easily positioning a valve spindle in the center of a rotary holding body of a valve spindle polishing apparatus.

Another object of the present invention is to enable the valve spindle to be polished by fixing a valve spindle of various sizes to one valve spindle polishing apparatus by replacing only the valve spindle fixing chuck.

The valve spindle fixing chuck for a valve spindle polishing apparatus according to the present invention is a valve spindle polishing apparatus for a valve spindle polishing apparatus for inserting a valve spindle of a marine diesel engine into a rotary holder, And is detachably mounted on a lower portion of the rotary support body so as to be able to fix the valve spindle to the center of the rotary support body.

It is also preferable that the valve spindle fixing chuck includes a cylindrical spin holding part and a flange. The spin holding part is inserted into the rotary holding body and the valve spindle is inserted therein to urge the valve spindle to be positioned at the center of the rotary holding body. The flange is formed at one end of the spin holding part and detachably mounted to the lower part of the rotary holding part.

In addition, in the valve spindle fixing chuck described above, when the flange is mounted to the lower portion of the rotary holder, the outer peripheral surface is inclined so that the outer peripheral surface can be pressed by the rotary holder, and when the outer peripheral surface is pressed, And a plurality of cutting grooves formed in the radial direction so as to be in close contact with the valve spindle inserted in the circumferential direction.

According to the present invention, when the valve spindle holding chuck is inserted into the rotary holding body of the valve spindle polishing apparatus and the valve spindle is inserted into the valve spindle holding chuck, the valve spindle is naturally positioned at the center of the rotary holding body. Therefore, the valve spindle can be easily positioned at the center of the rotary holder.

Further, according to the present invention, if the diameter of the valve spindle is changed, the valve spindle can be fixed to the valve spindle polishing apparatus by changing the size of the valve spindle fixing chuck without changing the valve spindle polishing apparatus. Therefore, one valve spindle polishing apparatus can polish valve spindles of various sizes.

1 is a plan view and a front sectional view of an embodiment of a valve spindle fixing chuck for a valve spindle polishing apparatus according to the present invention,
Fig. 2 is a conceptual view of a valve spindle polishing apparatus equipped with the valve spindle fixing chuck shown in Fig. 1,
FIG. 3 is a partial enlarged view of a valve spindle polishing apparatus in which valve spindles of different sizes are fixed using different sizes of the valve spindle fixing chuck shown in FIG. 1;
4 is a conceptual view of a conventional valve spindle polishing apparatus,
5 is a partially enlarged view of the rotary retainer of the valve spindle polishing apparatus shown in Fig.

An embodiment of a valve spindle fixing chuck according to the present invention will be described with reference to Figs. 1 and 2. Fig.

The valve spindle fixing chuck 110 according to the present invention is applied to a valve spindle polishing apparatus 120 that inserts a valve spindle of a marine diesel engine into a rotary holder and then rotates and polishes the valve spindle. The valve spindle holding chuck 110 is inserted between the rotary holder 125 and the valve spindle 130 and is detachably mounted on the lower portion of the rotary holder 125 to rotate the valve spindle 13 in the rotary holder 125, respectively. To this end, the valve spindle holding chuck 110 has a cylindrical spin holding part 111 and a flange 115. [

The spin holding part 111 is inserted into the rotary support 125 and presses the valve spindle 130 into the center of the rotary support 125 by inserting the valve spindle 130 therein. The flange 115 is formed at one end of the spin holding part 111 and is detachably mounted on the lower part of the rotary holding part 125. A bolt hole 116 is formed in the flange 115 to fix the flange 115 to the rotary holder 125 by the bolt 126. [ That is, when the bolt 126 is fastened, the flange 115 is engaged with the rotary support 125, and the valve spindle fixing chuck 110 is mounted on the rotary support 125.

When the flange 115 is coupled to the rotary support 125, the spin holding part 111 rotates the outer peripheral surface 112 of the spin holding part 111 to position the valve spindle 130 at the center of the rotary support 125, Is formed to be inclined. And a plurality of cutting grooves 113 formed in the radial direction are formed along the circumferential direction. In this embodiment, four incision grooves 113 are formed. Therefore, when the flange 115 is coupled to the rotary support 125 using the bolt 126, the spin holding part 111 is inserted into the rotary support 125 and ascended. At this time, since the outer peripheral surface 112 of the spin holding part 111 is inclined, the rotary holding body 125 presses the outer peripheral surface 112 of the spin holding part 111. When the outer circumferential surface 112 of the spin holding part 112 is pressed, the cut-off groove 113 is formed in the circumferential direction, so that the spin holding part 112 is contracted and the valve spindle 130 inserted into the spin holding part 112 Tightly. The valve spindle 130 is in close contact with the spin holding part 112 and is fixed to the center of the spin holding part 112. Since the spin holding part 112 is concentric, the valve spindle 130 is fixed to the center of the rotary holding part 125. Therefore, by using the valve spindle fixing chuck 110 of this embodiment, the valve spindle 130 can be easily fixed to the center of the rotary holder 125.

In the case of the embodiment shown in FIG. 2, the valve spindle 130 having a diameter of 60 mm is used. If the valve spindle having a diameter of 35 mm is to be polished, the valve spindle can not be fixed to the valve spindle polishing apparatus 120. Therefore, the valve spindle polishing apparatus 120 shown in Fig. 2 can not be used, The valve spindle grinding device should be provided separately. However, in the case of the present invention, the valve spindle polishing apparatus 120 shown in FIG. 2 can be used to polish the valve spindle using a valve spindle holding chuck adapted to a valve spindle having a diameter of 35 mm, . For example, as shown in FIG. 3, when the thickness of the valve spindle fixing chuck 110a is increased to fit the valve spindle 135 having a diameter of 35 mm, a polishing apparatus 120 The valve spindle 135 having a diameter of 35 mm can be fixed to the rotating and holding member 125 of the first embodiment. Therefore, in the case of the present invention, when the valve spindle fixing chuck is prepared to have different diameters and different diameters, the valve spindle can be polished using one valve spindle polishing apparatus.

110: Valve spindle fixing chuck 111: Spin holding part
112: outer circumferential surface 113: incision groove
115: flange 116: bolt hole
120: valve spindle polishing apparatus 125: rotary holder
126: Bolt 130: (60 mm in diameter) Valve spindle
135: (35 mm in diameter) Valve spindle

Claims (3)

A valve spindle polishing apparatus for polishing a valve spindle of a marine diesel engine, the valve spindle of a marine diesel engine being inserted into a rotary holder and rotating the valve spindle, the valve spindle being inserted between the valve spindle inserted into the rotary holder and the rotary holder, And the valve spindle is detachably mounted on the lower portion of the rotary support so as to fix the valve spindle. The method according to claim 1,
A cylindrical spin holding part inserted into the rotary holding body and inserted into the valve spindle to urge the valve spindle to be positioned at the center of the rotary holding body;
And a flange formed at one end of the spin holding part and detachably mountable to a lower portion of the rotary holding body. 3. The method of claim 2,
The outer peripheral surface of the spin holding part is inclined so that the outer peripheral surface can be pressed by the rotary holding body when the flange is attached to the lower portion of the rotary holding body, and when the outer peripheral surface is pressed, the spindle holding part contracts and closely contacts the valve spindle Wherein a plurality of cut-away grooves are formed along the circumferential direction in the radial direction of the valve spindle.
KR1020150098930A 2015-07-13 2015-07-13 Valve spindle fixing chuck for valve spindle grinding apparatus KR20170007917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150098930A KR20170007917A (en) 2015-07-13 2015-07-13 Valve spindle fixing chuck for valve spindle grinding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150098930A KR20170007917A (en) 2015-07-13 2015-07-13 Valve spindle fixing chuck for valve spindle grinding apparatus

Publications (1)

Publication Number Publication Date
KR20170007917A true KR20170007917A (en) 2017-01-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150098930A KR20170007917A (en) 2015-07-13 2015-07-13 Valve spindle fixing chuck for valve spindle grinding apparatus

Country Status (1)

Country Link
KR (1) KR20170007917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514499A (en) * 2018-12-28 2019-03-26 江苏核电有限公司 A kind of Multi-functional valve core attaching/detaching apparatus and application method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514499A (en) * 2018-12-28 2019-03-26 江苏核电有限公司 A kind of Multi-functional valve core attaching/detaching apparatus and application method

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