CN204902746U - A detect auxiliary device that is used for a bolt word groove symmetry - Google Patents

A detect auxiliary device that is used for a bolt word groove symmetry Download PDF

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Publication number
CN204902746U
CN204902746U CN201520331186.9U CN201520331186U CN204902746U CN 204902746 U CN204902746 U CN 204902746U CN 201520331186 U CN201520331186 U CN 201520331186U CN 204902746 U CN204902746 U CN 204902746U
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CN
China
Prior art keywords
bolt
flat recess
endoporus
symmetry
counterbore
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CN201520331186.9U
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Chinese (zh)
Inventor
王世敏
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GUIZHOU HANGRUI AVIATION PRECISION PARTS MANUFACTURING Co Ltd
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GUIZHOU HANGRUI AVIATION PRECISION PARTS MANUFACTURING Co Ltd
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Priority to CN201520331186.9U priority Critical patent/CN204902746U/en
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Abstract

The utility model discloses a detect auxiliary device that is used for a bolt word groove symmetry, including the cylinder, the cylinder is inside including the counter bore that is located upper portion and the hole of lower part, and the internal diameter of counter bore is greater than the internal diameter of hole, the internal diameter of counter bore is 1.2-1.5 times of head diameter of bolt head, hole and screw rod clearance fit, the minimum clearance is 0-0.05mm. The utility model discloses simple structure, processing is convenient, can integrative mechanical shaping, use with corresponding bolt is supporting, have smallly, the quality is light, and characteristics such as convenient to carry use this device simple when measuring the symmetry, convenient, swift, and measured data is accurate, and the practicality height is fit for using widely.

Description

For the detection servicing unit of bolt flat recess symmetry
Technical field
The utility model relates to field of machining and machinebuilding technology, particularly a kind of detection servicing unit for bolt flat recess symmetry. background technology
Flat recess dormant bolt, flat recess hexagon head bolt, after head processing flat recess, need the symmetry detecting the relative bar portion of flat recess, symmetry refers to take benchmark as symcenter, comprise the minor increment between the symmetrical plane of measured surface or two planes of axial line, belong to the positioning error in site error.
During measurement, tested keyway filled in by the special patch of general use, and levelling in a direction, take reading with dial gauge, turn over 180 degree of bodies, the same levelling dial gauge takes reading again, and the difference of twice is asymmetry value.For flat recess hexagon head bolt, specific operation process is as follows: first on flat board, be placed with V shape iron, flat recess hexagon head bolt is placed on V shape iron, clearance gauge is put in the flat recess of bolt head, dial framework placed by platform, dial framework installs dial gauge, smooths in position, and record reading; Flat recess hexagon head bolt is turned over turnback, measures reading as stated above, the difference of twice reading is the symmetry of flat recess 1 relative to screw rod benchmark, due to the structural relation of part, need multiple types of tools with the use of, bring measure trouble, a slow-footed difficult problem.
Utility model content
The purpose of this utility model is to provide a kind of servicing unit, solve prior art measure time need multiple types of tools with the use of, make troubles to measurement, a slow-footed difficult problem.
To achieve these goals, the utility model provides following technical scheme: for the detection servicing unit of bolt flat recess symmetry, comprise right cylinder, and described cylindrical inside includes and is on same central axis, the endoporus of superposed counterbore and bottom, counterbore communicates with endoporus; The internal diameter of counterbore is greater than the internal diameter of endoporus; Described counterbore internal diameter is 1.2 ~ 1.5 times of bolt head head diameter.
Principle of work of the present utility model and beneficial effect: for the detection servicing unit of bolt flat recess symmetry, comprise right cylinder, right cylinder is the agent structure of described detection aid, right cylinder inside includes the endoporus of superposed counterbore and bottom, cut open along cylindrical central plane, cylindrical interior profile is " T " font, and the structure of this setting is simple, easy to process, can the mechanical machine-shaping of one.The utility model uses with corresponding bolt matching, has volume little, and quality is light, easy to carry, the method only needs to use 2 instruments when measuring symmetry, and measuring process is simple, convenient, fast, and measuring error is little simultaneously, accurate data, practicality is high, is applicable to promoting the use of.
When using the utility model, the screw rod of bolt is put into cylindrical endoporus, bolt head sinks in counterbore, the position of adjustment bolt, make the opening of flat recess perpendicular to cylindrical external cylindrical surface, vernier on moving cursor slide calliper rule, increase the distance between main scale and vernier, by determinand thing between two card bases, one holds the utility model, thumb is against on main scale simultaneously, card base on main scale is abutted against on the trough rim of flat recess, another hand moving cursor is close towards main scale direction, time vernier moves on right cylinder 1 external cylindrical surface, stop mobile, fine-adjusting vernier slide calliper rule, when determinand and measuring jaw are tightly affixed, record reading obtains d 1, use the same method and measure the distance d of another trough rim of flat recess to the external cylindrical surface of right cylinder opposite face 2, by twice measurement data d 1-d 2value be flat recess relative to screw rod reference symmetry degree.
Further, described cylindrical external cylindrical surface is smooth, and external cylindrical surface is equal everywhere to the distance of counterbore inner surface, eliminates and measures d 1, d 2error, make the symmetry that obtains more accurate; Described right cylinder top is provided with scale mark, facilitates the measurement of vernier caliper, ensures the accuracy measured simultaneously.
Further, described endoporus coordinates with screw clearance, described endoporus coordinates with screw clearance, minimum clearance is 0 ~ 0.05mm, guarantee that the screw rod of bolt can pass in and out endoporus smoothly, there is no again unnecessary gap simultaneously, ensure that the axial line of screw rod overlaps with the axial line of endoporus, provide a datum line accurately to measurement; The length of endoporus is less than the length of screw rod, under guarantee datum line position accurately condition, reduces the use of material as far as possible, cuts down finished cost.
Further, described counterbore and endoporus joint are provided with chamfering, make bolt can enter endoporus more smoothly.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the utility model for the detection servicing unit of bolt flat recess symmetry;
Fig. 2 is the sectional view of the utility model for the detection servicing unit of bolt flat recess symmetry;
Fig. 3 is the vertical view of the utility model for the detection servicing unit of bolt flat recess symmetry;
Fig. 4 is the structural representation of flat recess hexagon head bolt;
Fig. 5 is that prior art uses dial gauge to measure the schematic diagram of bolt flat recess symmetry;
Fig. 6 Application Example schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further details:
Reference numeral: right cylinder 1, counterbore 2, endoporus 3, bolt 4, V shape iron 5, flat board 6, clearance gauge 7, dial framework 8, dial gauge 9, vernier caliper 10, main scale 11, vernier 12, scale mark 101, flat recess 401, bolt head 402, screw rod 403.
As shown in FIG. 1 to 3, a kind of detection servicing unit for bolt flat recess symmetry, comprises right cylinder 1, and described right cylinder 1 inside includes and is on same central axis, the endoporus 3 of superposed counterbore 2 and bottom, and counterbore 2 communicates with endoporus 3; The internal diameter of counterbore 2 is greater than the internal diameter of endoporus 3; The internal diameter of described counterbore 2 is 1.2 ~ 1.5 times of the head diameter of bolt head 402.
As shown in Figure 4, described bolt 4 comprises bolt head 402 and screw rod 403, and the top of described bolt head 402 is provided with flat recess 401.
As shown in Figure 5, existing technological means is when measuring the symmetry of flat recess 401, usually operation like this: place one piece of V shape iron 5 first on the plate 6, the screw rod 403 of bolt 4 is put into V shape iron 5, keeps level, in the flat recess of bolt 4, put into clearance gauge 7, dial framework 8 is settled on the plate 6, the movable end of dial framework 8 is installed dial gauge 9, this position is smoothed, and record reading t 1; Afterwards bolt 4 is turned over turnback, measure reading t as stated above 2, the difference (t of twice reading 1-t 2) be the symmetry of flat recess 1 relative to screw rod 403 benchmark.But use above-mentioned measuring method, need multiple types of tools with the use of, and measure trouble, speed is slow.
As shown in Figure 6, when a kind of detection servicing unit for bolt flat recess symmetry of use the utility model, first the screw rod 403 of bolt 4 is put into the endoporus 3 of right cylinder 1, bolt head 402 sinks in counterbore 2, adjustment is by the position of flat recess 401, make the opening of flat recess 401 perpendicular or parallel in scale mark 101, vernier on moving cursor slide calliper rule 10, increase the distance between main scale 11 and vernier 12, by determinand thing between two card bases, one holds the utility model, thumb is against on main scale 11 simultaneously, card base on main scale 11 is abutted against on the trough rim of flat recess 401, another hand moving cursor 12 is close towards main scale 11 direction, when vernier 12 move to right cylinder 1 external cylindrical surface vertical with scale mark 101 time, stop mobile, fine-adjusting vernier slide calliper rule 10, ensure measuring accuracy, record reading obtains d 1, use the same method and measure the distance d of another trough rim of flat recess 401 to the external cylindrical surface of right cylinder 1 opposite face 2, by twice measurement data d 1-d 2value be the symmetry of flat recess 401 relative to screw rod 403 benchmark, the method measure symmetry time only need to use 2 instruments, measuring process is convenient and swift, and practicality is high, is applicable to promoting the use of.
Principle of work of the present utility model and beneficial effect: a kind of detection servicing unit for bolt flat recess symmetry, comprise right cylinder 1, right cylinder 1 is the agent structure of described detection aid, right cylinder 1 inside includes the endoporus 3 of superposed counterbore 2 and bottom, central plane along right cylinder 1 is cut open, and cylindrical interior profile is " T " font, and the structure of this setting is simple, easy to process, can be integrally mechanical-moulded; Endoporus 1 and screw rod 403 clearance fit, minimum clearance is 0 ~ 0.05mm, guarantees that screw rod 403 can pass in and out endoporus smoothly, does not have again unnecessary gap simultaneously, ensures that the axial line of screw rod 403 overlaps with the axial line of endoporus 3, provides a datum line accurately to measurement.The features such as the utility model supports the use with corresponding bolt 4, has volume little, and quality is light, easy to carry.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; without departing from the concept of the premise utility; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.

Claims (4)

1. for the detection servicing unit of bolt flat recess symmetry, comprise right cylinder, it is characterized in that: described cylindrical inside includes and is on same central axis, superposed counterbore and the endoporus being positioned at bottom, counterbore communicates with endoporus, and the internal diameter of counterbore is greater than the internal diameter of endoporus; Described counterbore internal diameter is 1.2 ~ 1.5 times of bolt head head diameter.
2. as claimed in claim 1 for the detection servicing unit of bolt flat recess symmetry, it is characterized in that: described cylindrical external cylindrical surface is smooth, cylindrical top is provided with scale mark simultaneously.
3., as claimed in claim 1 for the detection servicing unit of bolt flat recess symmetry, it is characterized in that: the length of endoporus is less than the length of screw rod.
4., as claimed in claim 1 for the detection servicing unit of bolt flat recess symmetry, it is characterized in that: described counterbore and endoporus joint are provided with chamfering.
CN201520331186.9U 2015-05-21 2015-05-21 A detect auxiliary device that is used for a bolt word groove symmetry Active CN204902746U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520331186.9U CN204902746U (en) 2015-05-21 2015-05-21 A detect auxiliary device that is used for a bolt word groove symmetry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520331186.9U CN204902746U (en) 2015-05-21 2015-05-21 A detect auxiliary device that is used for a bolt word groove symmetry

Publications (1)

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CN204902746U true CN204902746U (en) 2015-12-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157541A (en) * 2015-05-21 2015-12-16 贵州航锐航空精密零部件制造有限公司 Detection auxiliary device for degree of symmetry of straight slot of bolt
CN111076650A (en) * 2019-11-22 2020-04-28 河南航天精工制造有限公司 Tool for measuring symmetry of double-sided milling flat workpiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157541A (en) * 2015-05-21 2015-12-16 贵州航锐航空精密零部件制造有限公司 Detection auxiliary device for degree of symmetry of straight slot of bolt
CN111076650A (en) * 2019-11-22 2020-04-28 河南航天精工制造有限公司 Tool for measuring symmetry of double-sided milling flat workpiece
CN111076650B (en) * 2019-11-22 2021-11-23 河南航天精工制造有限公司 Tool for measuring symmetry of double-sided milling flat workpiece

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Auxiliary device for measuring symmetry of bolt slot

Effective date of registration: 20221219

Granted publication date: 20151223

Pledgee: China Construction Bank Corporation Zunyi branch

Pledgor: GUIZHOU HANGRUI AVIATION PRECISION PARTS MANUFACTURING Co.,Ltd.

Registration number: Y2022520000054