CN103551626B - Spacing block is used in pipe sheet deep hole processing - Google Patents
Spacing block is used in pipe sheet deep hole processing Download PDFInfo
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- CN103551626B CN103551626B CN201310528480.4A CN201310528480A CN103551626B CN 103551626 B CN103551626 B CN 103551626B CN 201310528480 A CN201310528480 A CN 201310528480A CN 103551626 B CN103551626 B CN 103551626B
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- spacing block
- working face
- deep hole
- spacing
- block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
Abstract
The invention discloses a kind of pipe sheet deep hole processing spacing block, this spacing block is arranged between main shaft adjacent on three-axis numerical control deep hole drilling machine, the deep hole of three-axis numerical control deep hole drilling machine on the tube sheet processing steam generator in Nuclear Power Industry; Wherein, described three-axis numerical control deep hole drilling machine comprises three main shafts set gradually from top to bottom, and described three main shafts are all horizontally disposed with; This spacing block comprises spacing block main body, and the top of spacing block main body is upper working face, and the bottom of spacing block main body is lower working face, wherein goes up working face parallel with lower working face; Between adjacent main shaft, the upper working face being positioned at the first locating surface above and spacing block is affixed, the lower working face being positioned at the second locating surface below and spacing block is affixed, locating surface and spacing block have very high required precision, ensure that the distance between axles in tube sheet process, for tube sheet processing provides safeguard.
Description
Technical field
The present invention relates to a kind of device of depth drill between centers spacing, particularly for processing the spacing block that the three-axis numerical control deep hole drilling machine of pipe sheet deep hole is applied.
Background technology
Steam generator is one of nuclear power plant nuclear island main equipment, steam generator tube sheet is the large parts that in nuclear power main equipment, technical requirement is the highest, manufacture difficulty of processing is maximum, and the quality of its crudy decides the ruuning situation of steam generator and even whole nuclear power plant.Along with the progress of technology, the size of tube plate of nuclear power steam generator and weight are also towards the future development maximized.For Generation Ⅲ AP1000 series tube sheet, the nearly 4m of primary side surface diameter, pore number is 20050, and tube sheet weight reaches ton up to a hundred; Meanwhile, the size of pore is also very strict, and the column pitch in hole is 21.557mm, and each hole is Ф 0.25mm to the position degree in tube sheet axle center, will require that so many hole ensures so high precision in large-area scope like this, is obviously a very difficult thing.
Traditional single shaft deep hole processing equipment can ensure pore diameter size, but still cannot stablize, effectively ensures pore centre-to-centre spacing; Meanwhile, in the face of with AP1000 series for the Generation Ⅲ evaporator pipe sheet of representative, the feature that its working (machining) efficiency is low has been doomed again this type of process equipment and cannot have been met the needs of reality.Under this background, these difficult problems of solution that appear as of three-axis numerical control deep hole drilling machine provide a possibility.Utilize the feature of three-shaft linkage, based on the precision of lathe self, rely on procedure to ensure the row (column) spacing in hole, row (OK) spacing dimension in hole then depends on the distance between axles of three between centers.The distance between axles of three-axis numerical control deep hole drilling machine is adjustable, to adapt to the pitch of holes of different size.But pore distance theory dimensional accuracy reaches micron order, only rely on artificial adjustment, even if be also difficult to ensure that the distance of shaft centers between adjacent diaxon reaches target size and can be consistent by means of the measuring instrument of precision.
Meanwhile, also there are the following problems in existing spacing block field:
The first, spacing block is seldom applied in more existing three axle drilling machines;
The second, there is spacing between its three axles of some three axle drilling machines adjustable, but this kind of drilling machine is not applied to spacing block yet.
Three, the three axle drilling machines to the processing of nuclear industry pipe sheet deep hole of existing some, as the patent of the present inventor's application, application number is CN201310241547.6, name is called AP1000 steam generator tube sheet group hole High Efficient Machining Technology method, three-axis numerical control deep hole drilling machine described in this patent can complete the processing to nuclear industry steam generator tube sheet deep hole, but spacing block used just simple application in this kind of three-axis numerical control deep hole drilling machine, also not to the research that spacing block is deepened in this patent.
Due to the existence of the problems referred to above, the present invention carries out research and analysis to existing three-axis numerical control deep hole drilling machine and spacing block, so as to produce have that intensity is high, the degree of accuracy is high, easy to use and can large-scale application on the three-axis numerical control deep hole drilling machine of nuclear industry steam generator tube sheet deep hole machining.
Summary of the invention
In order to solve the problem, the present inventor studies with keen determination, found that: by arranging the spacing block comprising spacing block main body, the top of described spacing block main body is upper working face, the bottom of spacing block main body is lower working face, and in adjacent main shaft, the first locating surface of upper working face and superposed first rectangular block 3 is affixed, lower working face is affixed with the second locating surface of the second rectangular block 4 being positioned at bottom, thus completes the present invention.
The object of the present invention is to provide following aspect:
(1) a pipe sheet deep hole processing spacing block, is characterized in that: this spacing block is arranged between main shaft 6 adjacent on three-axis numerical control deep hole drilling machine, the deep hole of three-axis numerical control deep hole drilling machine on the tube sheet processing steam generator in Nuclear Power Industry;
Wherein, described three-axis numerical control deep hole drilling machine is included in three that column sets gradually main shaft 6 parallel to each other from top to bottom, and described three main shafts 6 are all horizontally disposed with;
This spacing block comprises spacing block main body 5, the top of spacing block main body 5 is upper working face 1, the bottom of spacing block main body 5 is lower working face 2, wherein go up working face parallel with lower working face, and the depth of parallelism of upper working face and lower working face is 0.004, the surface roughness of upper working face and lower working face is 0.4;
Between adjacent main shaft 6, the bottom being positioned at top main shaft is connected with the first rectangular block 3 by bolt, and the lower surface of the first rectangular block 3 and the upper working face 1 of spacing block are affixed; The top being positioned at the main shaft of below is affixed by be connected with the second rectangular block 4 upper surface of the second rectangular block 4 and the lower working face 2 of spacing block of bolt; Wherein, the center 3 o'clock of the center of the first rectangular block, the center of spacing block and the second rectangular block is on a vertical straight line; The lower surface of the first rectangular block and the upper surface of the second rectangular block two planes are parallel to each other and the depth of parallelism is 0.004, surface roughness is 0.4.
(2) the pipe sheet deep hole processing spacing block according to above-mentioned (1), is characterized in that: the material of described spacing block is cold work die steel Cr12.
(3) the pipe sheet deep hole processing spacing block according to above-mentioned (1), is characterized in that: described spacing block case hardness is HRC60 ~ 65.
(4) the pipe sheet deep hole processing spacing block according to above-mentioned (1), is characterized in that: the tolerance of the working size of this spacing block is 0.01mm.
(5) the pipe sheet deep hole processing spacing block according to above-mentioned (1), is characterized in that: upper spacing between main shaft orientation face 3 and lower main axis locating surface 4 equals the working size of locating piece, i.e. locating piece thickness, and spacing dimension tolerance is 0.01mm.
(6) the pipe sheet deep hole processing spacing block according to above-mentioned (1), is characterized in that: settle more than 2 or 2 spacing blocks between adjacent two main shafts 6, and all spacing block working sizes between two main shafts 6 are identical.
(7) the pipe sheet deep hole processing spacing block according to above-mentioned (1), it is characterized in that: in spacing block manufacturing procedure, final step operation is fine ginding, between two main shafts, the upper working face of all spacing blocks and the fine ginding operation of lower working face are carried out simultaneously, and namely all spacing blocks are placed side by side carries out fine ginding processing on grinding machine.
According to pipe sheet deep hole processing spacing block provided by the invention, not only there is good intensity, hardness and wearability, and dimensionally stable, reliable positioning safeguards can be provided for long deep hole machining, efficiently solve the orientation problem of depth drill main shaft, it also has following beneficial effect simultaneously: in the pipe sheet deep hole process of the steam generator of Nuclear Power Industry, some spacing blocks are in groups arranged between adjacent two main shafts, rely on the high accuracy of spacing block self, can not only ensure that distance of shaft centers reaches pre-provisioning request, and the error that can reduce to greatest extent because manual operation brings, meet the high request of tube sheet to pore pitch of holes, for the deep hole machining of tube sheet provides solid guarantee.
Accompanying drawing explanation
Fig. 1 illustrates the working state structure schematic diagram of the pipe sheet deep hole processing spacing block according to a kind of preferred embodiment of the present invention.
Fig. 2 illustrates the structural representation of the pipe sheet deep hole processing spacing block according to a kind of preferred embodiment of the present invention;
Drawing reference numeral illustrates:
The upper working face of 1-
Working face under 2-
3-first rectangular block
4-second rectangular block
5-spacing block main body
6-main shaft
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail, and the features and advantages of the invention will illustrate along with these and become more clear, clear and definite.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.
According in the present invention one preferred embodiment, as shown in figs. 1-2, a kind of pipe sheet deep hole processing spacing block is provided, this spacing block is arranged between main shaft 6 adjacent on three-axis numerical control deep hole drilling machine, the deep hole of three-axis numerical control deep hole drilling machine on the tube sheet processing steam generator in Nuclear Power Industry;
Wherein, described three-axis numerical control deep hole drilling machine comprises three of setting gradually main shaft 6 parallel to each other from top to bottom, and described three main shafts 6 are all horizontally disposed with;
This spacing block comprises spacing block main body 5, and the top of spacing block main body 5 is upper working face 1, and the bottom of spacing block main body 5 is lower working face 2, wherein goes up working face parallel with lower working face; And the depth of parallelism is 0.004, the surface roughness of upper working face and lower working face is 0.4.
The first rectangular block 3 and the second rectangular block 4 for contacting with spacing block is had between adjacent main shaft 6, the lower surface being positioned at the first rectangular block 3 of top is the first locating surface, the upper surface being positioned at the second rectangular block 4 of below is the second locating surface, the upper working face 1 being wherein positioned at the first locating surface above and spacing block is affixed, and the lower working face 2 being positioned at the second locating surface below and spacing block is affixed.
First rectangular block 3 and the second rectangular block 4 are fixed by bolts on main shaft, and the first locating surface and the second locating surface parallel to each other, the depth of parallelism is 0.004, and surface roughness is 0.4.
In one preferred embodiment, as shown in fig. 1, described spacing block comprises spacing block main body 5, spacing block main body 5 is solid cylinder, spacing block main body 5 top is upper working face 1, is lower working face 2 bottom spacing block main body 5, and the sidewall of described spacing block main body 5 there is no particular/special requirement.And spacing block main body also there is no particular/special requirement, can be any cylinder, in the present invention, spacing block main body 5 be preferably cuboid.
Wherein, upper working face 1 is parallel with lower both working faces 2, and what can make that this spacing block can be stable like this is placed between adjacent main shaft 6.
Specifically, the material of described spacing block is cold work die steel Cr12, and the case hardness of spacing block is HRC60 ~ 65, is arranged by this kind, the intensity of this spacing block, hardness and abrasion resistance can be increased, also can avoid this spacing block because of distortion simultaneously and produce error.
In one preferred embodiment, as shown in fig. 1, between adjacent main shaft, the upper working face 1 of the first locating surface and spacing block that are positioned at the first rectangular block is above affixed, and the lower working face 2 of the second locating surface and spacing block that are positioned at the second rectangular block is below affixed; Spacing block to be arranged between two adjacent main shafts namely between the first rectangular block and the second rectangular block, main shaft can be made in boring procedure to keep fixing distance of shaft centers always, and then the error reduced to greatest extent because manual operation brings, meet the high request of tube sheet to pore pitch of holes, for the deep hole machining of tube sheet provides solid guarantee.
Wherein, between the first rectangular block that spacing block is clipped in adjacent two main shafts and the second rectangular block, without the need to other auxiliary bodies, can constant spacing block by means of only the pressure between the first rectangular block of adjacent two main shafts and the second rectangular block; For the spacing block arranged in groups between the first rectangular block of adjacent main shaft and the second rectangular block also without the need to other auxiliary bodies, spacing block in groups can be fixed by means of only the pressure between the first rectangular block of adjacent two main shafts and the second rectangular block.
Wherein, the upper working face of spacing block and the depth of parallelism of lower working face are 0.004; The surface roughness of upper working face and lower working face is 0.4, be arranged so that like this spacing block operationally on main shaft the locating surface of rectangular block contact more abundant with the working face of spacing block, prevent contact surface from occurring salient point, to ensure positioning precision, be also a kind of protection to main shaft orientation face simultaneously; Roughness is then determined by manufacturing process, and the machined surface after fine grinding all can reach this requirement, and the roughness of spacing block 0.4 is also kind of a protection to the locating surface of main shaft, prevents from causing wearing and tearing to locating surface.
In a preferred embodiment, rectangular block and main shaft are not integrative-structure, can be fixed together in several ways, and preferred bolt of selecting connects, and can select multiple bolt, to reach fully fixing object; Be fixed on mainshaft mechanism to make rectangular block, the screwed hole of depression is provided with, in the screwed hole of the complete precession depression of bolt, to ensure that locating surface is smooth at the middle part of rectangular block, without outstanding part, the locating surface of rectangular block is fully contacted with the working face of spacing block; As shown in Figure 1, spacing block is placed between first locating surface of upper first rectangular block 3 and the first locating surface of the second rectangular block 4, first locating surface and the second locating surface parallel to each other, and the depth of parallelism is 0.004, the surface roughness of two locating surfaces is 0.4, make spacing block operationally on main shaft the locating surface of rectangular block contact more abundant with spacing block, prevent contact surface from occurring salient point, ensure that the precision of the depth of parallelism between main shaft and distance between axles, for the deep hole machining of tube sheet provides solid guarantee.
The second rectangular block that rectangular block described in the present invention is the first rectangular block of being positioned on main shaft above or is positioned on main shaft below, described locating surface is the first locating surface of the first rectangular block or the second locating surface of the second rectangular block.
In one preferred embodiment, as shown in Figure 2, described working size is the size of H as shown in Figure 2 in the present invention, working size is determined jointly by the row (column) spacing in the hole of three-axis numerical control deep hole drilling machine feature and processed tube sheet, the size of described working size there is no particular/special requirement, but the tolerance of working size is 0.01mm, by being arranged so that spacing block is in position fixing process like this, more accurately, precision is high, error dropped to minimum.
Distance between first locating surface of the first adjacent rectangular block and the second locating surface of the second rectangular block is equal with the spacing block working size placed between them and thickness, and spacing dimension tolerance is 0.01mm, by being arranged so that spacing block is in position fixing process like this, more accurately, accurately, error is dropped to minimum.
In one preferred embodiment, three-axis numerical control deep hole drilling machine of the present invention is applied in nuclear industry steam generator tube sheet deep hole drilling work, described three-axis numerical control drilling machine comprises three main shafts, wherein, the afterbody of each main shaft is all arranged on the slide plate on column, three main shafts are all horizontally disposed with, and three main shafts are parallel to each other, and described spacing block is arranged between adjacent main shaft; This kind arranges and can ensure that between adjacent main shaft, distance of shaft centers reaches pre-provisioning request, and can reduce the error because manual operation brings to greatest extent, meets the high request of tube sheet to pore pitch of holes, for the deep hole machining of tube sheet provides solid guarantee.
According to pipe sheet deep hole processing spacing block provided by the invention, not only there is good intensity, hardness and wearability, and dimensionally stable, reliable positioning safeguards can be provided for long deep hole machining, efficiently solve the orientation problem of depth drill main shaft, it also has following beneficial effect simultaneously: in the pipe sheet deep hole process of the steam generator of Nuclear Power Industry, some spacing blocks are in groups arranged between adjacent two main shafts, rely on the high accuracy of spacing block self, can not only ensure that distance of shaft centers reaches pre-provisioning request, and the error that can reduce to greatest extent because manual operation brings, meet the high request of tube sheet to pore pitch of holes, for the deep hole machining of tube sheet provides solid guarantee.
More than joint detailed description of the invention and exemplary example are to invention has been detailed description, but these explanations can not be interpreted as limitation of the present invention.It will be appreciated by those skilled in the art that when not departing from spirit and scope of the invention, can carry out multiple equivalencing, modification or improvement to technical solution of the present invention and embodiment thereof, these all fall within the scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (3)
1. a spacing block is used in pipe sheet deep hole processing, it is characterized in that: this spacing block is arranged between main shaft (6) adjacent on three-axis numerical control deep hole drilling machine, the deep hole of three-axis numerical control deep hole drilling machine on the tube sheet processing steam generator in Nuclear Power Industry;
Wherein, described three-axis numerical control deep hole drilling machine is included in three that column sets gradually main shaft (6) parallel to each other from top to bottom, and described three main shafts (6) are all horizontally disposed with;
This spacing block comprises spacing block main body (5), the top of spacing block main body (5) is upper working face (1), the bottom of spacing block main body (5) is lower working face (2), wherein go up working face parallel with lower working face, and the depth of parallelism of upper working face and lower working face is 0.004, the surface roughness of upper working face and lower working face is 0.4;
Between adjacent main shaft (6), the bottom being positioned at top main shaft is connected with the first rectangular block (3) by bolt, and the lower surface of the first rectangular block (3) and the upper working face (1) of spacing block are affixed; The top being positioned at the main shaft of below is connected with the second rectangular block (4) by bolt, and the upper surface of the second rectangular block (4) and the lower working face (2) of spacing block are affixed; Wherein, the center 3 o'clock of the center of the first rectangular block, the center of spacing block and the second rectangular block is on a vertical straight line; The lower surface of the first rectangular block and the upper surface of the second rectangular block two planes are parallel to each other and the depth of parallelism is 0.004, surface roughness is 0.4;
Settle more than 2 spacing blocks between adjacent two main shafts (6), and all spacing block working sizes between two main shafts (6) are identical;
In spacing block manufacturing procedure, final step operation is fine ginding, and between two main shafts, the upper working face of all spacing blocks and the fine ginding operation of lower working face are carried out simultaneously, and namely all spacing blocks are placed side by side carries out fine ginding processing on grinding machine.
2. pipe sheet deep hole processing spacing block according to claim 1, is characterized in that: the material of described spacing block is cold work die steel Cr12.
3. pipe sheet deep hole processing spacing block according to claim 1, is characterized in that: described spacing block case hardness is HRC60 ~ 65.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528480.4A CN103551626B (en) | 2013-10-30 | 2013-10-30 | Spacing block is used in pipe sheet deep hole processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528480.4A CN103551626B (en) | 2013-10-30 | 2013-10-30 | Spacing block is used in pipe sheet deep hole processing |
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| Publication Number | Publication Date |
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| CN103551626A CN103551626A (en) | 2014-02-05 |
| CN103551626B true CN103551626B (en) | 2016-03-30 |
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| CN104289741B (en) * | 2014-09-03 | 2016-11-16 | 长春设备工艺研究所 | A kind of high accuracy creeper tread endoporus single tube reamer processing unit (plant) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04122505A (en) * | 1990-09-10 | 1992-04-23 | Saburo Watanabe | Device for displaying distance between spindles and angle of spindles of multispindle drilling machine |
| JP2000153404A (en) * | 1998-11-18 | 2000-06-06 | Umemoto Kosho:Kk | Boring method and device therefor |
| CN201702409U (en) * | 2010-05-26 | 2011-01-12 | 东方电气(广州)重型机器有限公司 | Integrated multi-hole processing device |
| CN202591670U (en) * | 2012-05-02 | 2012-12-12 | 上海大速电机有限公司 | Porous drill |
| JP2013039658A (en) * | 2011-07-20 | 2013-02-28 | Honda Motor Co Ltd | Machine tool and machining method using the same |
| CN103273103A (en) * | 2013-05-29 | 2013-09-04 | 哈电集团（秦皇岛）重型装备有限公司 | High temperature gas cooled reactor vapor generator nickel base tube plate deep hole machining method |
| CN103286338A (en) * | 2013-06-18 | 2013-09-11 | 哈电集团（秦皇岛）重型装备有限公司 | AP1000 steam generator tube plate group hole high-efficiency machining technology and method |
-
2013
- 2013-10-30 CN CN201310528480.4A patent/CN103551626B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04122505A (en) * | 1990-09-10 | 1992-04-23 | Saburo Watanabe | Device for displaying distance between spindles and angle of spindles of multispindle drilling machine |
| JP2000153404A (en) * | 1998-11-18 | 2000-06-06 | Umemoto Kosho:Kk | Boring method and device therefor |
| CN201702409U (en) * | 2010-05-26 | 2011-01-12 | 东方电气(广州)重型机器有限公司 | Integrated multi-hole processing device |
| JP2013039658A (en) * | 2011-07-20 | 2013-02-28 | Honda Motor Co Ltd | Machine tool and machining method using the same |
| CN202591670U (en) * | 2012-05-02 | 2012-12-12 | 上海大速电机有限公司 | Porous drill |
| CN103273103A (en) * | 2013-05-29 | 2013-09-04 | 哈电集团（秦皇岛）重型装备有限公司 | High temperature gas cooled reactor vapor generator nickel base tube plate deep hole machining method |
| CN103286338A (en) * | 2013-06-18 | 2013-09-11 | 哈电集团（秦皇岛）重型装备有限公司 | AP1000 steam generator tube plate group hole high-efficiency machining technology and method |
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