CN201872164U - Centering device for scribing blank holes - Google Patents

Centering device for scribing blank holes Download PDF

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Publication number
CN201872164U
CN201872164U CN2010206581195U CN201020658119U CN201872164U CN 201872164 U CN201872164 U CN 201872164U CN 2010206581195 U CN2010206581195 U CN 2010206581195U CN 201020658119 U CN201020658119 U CN 201020658119U CN 201872164 U CN201872164 U CN 201872164U
Authority
CN
China
Prior art keywords
center
hole
disc
blank hole
circle
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN2010206581195U
Other languages
Chinese (zh)
Inventor
于龙春
杨克非
管来国
梁俊波
王强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Port Group Co Ltd
Original Assignee
Qingdao Port Group Co Ltd
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 Qingdao Port Group Co Ltd filed Critical Qingdao Port Group Co Ltd
Priority to CN2010206581195U priority Critical patent/CN201872164U/en
Application granted granted Critical
Publication of CN201872164U publication Critical patent/CN201872164U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a centering device for scribing blank holes, aiming at overcoming the defects of labor waste, material waste and high cost because the steps of welding a steel sheet inside a hole, or wedging a wood block inside a hole and nailing an iron sheet on the wood block, and then finding a center point on the steel sheet or the iron sheet are needed when scribing is carried out on a workpiece blank hole before machining in the prior art. In the centering device, three nuts, with centerlines opposite to a circle center, are respectively fixed on trisection lines, penetrating through the circle center of a disc, on the surface of the disc, and three screw rods are respectively screwed inside the nuts. In the centering device for scribing, a set of ready-made disc with a center point and an adjusting screw rod is directly arranged in the blank hole, the screw rod is screwed to regulate the position of the disc relative to the blank hole so as to ensure that the circle center of the disc coincides with the center of the blank hole, a circle is drawn by taking the circle center of the disc as a reference point, the steps of welding the steel sheet inside the hole, or wedging the wood block inside the hole and nailing the iron sheet on the wood block, and then finding the center point on the steel sheet or the iron sheet are not needed, and therefore, the advantages of simplicity of operation, timesaving and laborsaving performances, high working efficiency and human resources saving performance are achieved; and one set of tool can be repeatedly used on different workpieces so that raw materials are not wasted and the production cost is reduced.

Description

Blank hole line centring means
Technical field
The utility model belongs to instrument, and is specifically a kind of before the blank hole of processing work, is the instrument of processed blank hole line centering.
Background technology
When the blank hole on the workpiece being carried out machineds such as car, boring, in order accurately to grasp the allowance of blank hole periphery, before carrying out machined, must give the blank hole line of workpiece, and then workpiece installs on the platen, comes centering processing with the line of blank hole.
When at present the blank hole on the workpiece being rule, in order to find the center of circle of blank hole line, usually adopt first welding rod sheet metal in blank hole, perhaps wedge advances a wooden unit in the hole, follow closely a fritter tinplate sheet again in the centre of wooden unit, on sheet metal or iron plate, find the center dot-dash circle of blank hole then.Above-mentioned way not only operates and bothers very much, inefficiency, and waste raw material do not influence mach thing and happen occasionally because of line catches up with, manually can cause production cost to increase again if increase, the work of line was once once becoming the bottleneck in the production link.
The utility model content
Technical problem to be solved in the utility model is, overcome prior art before carrying out machined to workpiece blank hole line, need in the hole, weld thin plate, or stow-wood piece, nail iron plate alignment point, the high shortcoming of the expense of taking a lot of work material cost provides a kind of blank hole line centring means.
In order to solve the problems referred to above that prior art exists, the utility model is to adopt following technical proposals to realize: on the disk card, be positioned on the trisection line by circle disk center, be fixed with the nut in its center line subtend center of circle respectively, three screw rods are screwed in the nut respectively.
The utility model also has following technical characterictic:
Described three screw rods are positioned at an end that leaves the center of circle and are the sharp bullet of band awl;
On the body of rod of described three screw rods, be provided with and insert the opposite planar that spanner is used;
Described plug in spanner is positioned at an end of nearly bullet with the plane;
Described plug in spanner is a square with the cross section at place, plane.
During use, the card of above-mentioned disk and the plane parallel in workpiece blank hole are placed, with be screwed in three screw rods on the nut place in the blank hole and support on the inwall of blank hole, turn three screw rods respectively and adjust the position of disk, with till the center of blank hole overlaps, the center of circle that promptly can disk is the periphery line of center in blank hole until the center of circle of disk.
Advantage of the present utility model and good effect are, because above-mentioned line centring means is, the disk that a ready-made cover is had central point and adjusting screw(rod) is directly installed in the blank hole, turn screw rod and adjust the relative position of disk and blank hole, the center of circle of disk and the center of blank hole are overlapped, the center of circle with disk is a benchmark strokes and dots circle then, need in blank hole, not weld sheet metal, do not need interim stow-wood piece, nail iron plate alignment point yet, simple to operate, time saving and energy saving, work efficiency rate height have been saved human resources; Kit can repeatedly use on different workpiece, does not waste raw material, has reduced production cost.
Description of drawings
Fig. 1 looks schematic diagram for the master of the utility model under in working order;
Fig. 2 is a right view of the present utility model among Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Among Fig. 1, Fig. 2, with as disk 2 cards of hard materials such as metal making, be positioned on the trisection line by disk 2 centers of circle 2.1, be welded with the nut 3 in its center line subtend center of circle 2.1 respectively, three screw rods 4 are screwed in respectively in the nut 3, and the center line of three screw rods 4 also just meets on the center of circle 2.1 naturally.
When using said apparatus, with the disk 2 of instrument as centering disk, the plane parallel of blank hole 1.1 on the plate face of disk 2 and the workpiece 1 is placed, place blank hole 1.1 interior also supports on the inwall of blank hole 1.1 three screw rods 4 that are screwed on the nut 3, adjust the front and back position of three screw rods 4, till the center of circle 2.1 of disk 2 is in the center of blank hole 1.1, the center of circle 2.1 on the disk 2 is the central point of blank hole 1.1, can be the center so just, draw circle in the outside of blank hole 1.1 with the center of circle 2.1 of disk 2.
More accurate in order to rule, and make the disk 2 of centering usefulness fixing more firm, described three screw rods 4 be positioned at an end that leaves the center of circle 2.1, contact with blank hole 1.1, be made as and be with sharp bullet 4.2.
For the convenience when rotate adjusting three screw rods 4, on the body of rod of described three screw rods 4, be provided with relative plug in spanner with plane 4.1, and relative plane 4.1 is positioned at an end of the nearly bullet 4.2 of screw rod 4 bodies of rod, make adjust more convenient.
For not only convenient but also simple and direct with spanner rotating screw bolt 4, the plug in spanner of band is preferably square with the cross section at 4.1 places, plane.

Claims (5)

1. centring means is used in blank hole line, it is characterized in that: on the disk card, be positioned on the trisection line by circle disk center, be fixed with the nut in its center line subtend center of circle respectively, three screw rods are screwed in the nut respectively.
2. centring means is used in blank hole line as claimed in claim 1, it is characterized in that: described three screw rods are positioned at an end that leaves the center of circle and are the sharp bullet of band awl.
3. centring means is used in blank hole line as claimed in claim 1 or 2, it is characterized in that: be provided with on the body of rod of described three screw rods and insert the opposite planar that spanner is used.
4. centring means is used in blank hole line as claimed in claim 3, and it is characterized in that: described plug in spanner is positioned at an end of nearly bullet with the plane.
5. centring means is used in blank hole line as claimed in claim 4, it is characterized in that: described plug in spanner is a square with the cross section at place, plane.
CN2010206581195U 2010-12-01 2010-12-01 Centering device for scribing blank holes Expired - Fee Related CN201872164U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206581195U CN201872164U (en) 2010-12-01 2010-12-01 Centering device for scribing blank holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206581195U CN201872164U (en) 2010-12-01 2010-12-01 Centering device for scribing blank holes

Publications (1)

Publication Number Publication Date
CN201872164U true CN201872164U (en) 2011-06-22

Family

ID=44160097

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206581195U Expired - Fee Related CN201872164U (en) 2010-12-01 2010-12-01 Centering device for scribing blank holes

Country Status (1)

Country Link
CN (1) CN201872164U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528787A (en) * 2011-12-30 2012-07-04 太原轨道交通装备有限责任公司 Center measuring device
CN104608108A (en) * 2014-12-17 2015-05-13 广西柳工机械股份有限公司 Device and method for drawing concentric circle of circular hole
CN110936230A (en) * 2019-12-18 2020-03-31 广西柳工机械股份有限公司 Round hole center positioning device, round hole center line drawing and distance measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528787A (en) * 2011-12-30 2012-07-04 太原轨道交通装备有限责任公司 Center measuring device
CN104608108A (en) * 2014-12-17 2015-05-13 广西柳工机械股份有限公司 Device and method for drawing concentric circle of circular hole
CN110936230A (en) * 2019-12-18 2020-03-31 广西柳工机械股份有限公司 Round hole center positioning device, round hole center line drawing and distance measuring device
CN110936230B (en) * 2019-12-18 2021-07-02 广西柳工机械股份有限公司 Round hole center positioning device, round hole center line drawing and distance measuring device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110622

Termination date: 20111201