CN201544151U - Locating fixture - Google Patents

Locating fixture Download PDF

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Publication number
CN201544151U
CN201544151U CN2009202381799U CN200920238179U CN201544151U CN 201544151 U CN201544151 U CN 201544151U CN 2009202381799 U CN2009202381799 U CN 2009202381799U CN 200920238179 U CN200920238179 U CN 200920238179U CN 201544151 U CN201544151 U CN 201544151U
Authority
CN
China
Prior art keywords
locating
alignment pin
fixture
elastic
workpiece
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
CN2009202381799U
Other languages
Chinese (zh)
Inventor
刘广超
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.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile 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 Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN2009202381799U priority Critical patent/CN201544151U/en
Application granted granted Critical
Publication of CN201544151U publication Critical patent/CN201544151U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model aims to provide a locating fixture which can reduce locating errors. The locating fixture includes a support block and a locating pin arranged in the support block. The utility model has key points that the head end of the locating pin is tapered, a position limiting groove is arranged at the tail end, the position limiting groove is clamped in a position limiting hole of a position limiting plate, and the position limiting groove and the position limiting hole of the position limiting plate are in clearance fit; and the tail end of the locating pin is propped against an elastic mechanism. The utility model adopts a floating type tapered locating pin to keep zero-clearance fit between the locating pin of the fixture and a workpiece locating hole, and the fit between the locating hole and the locating pin cannot be damaged even in case that the workpiece aperture changes or the locating pin of the fixture wears, so that the locating fixture realizes higher precision of workpiece assembly position.

Description

A kind of positioning fixture
Technical field
The utility model belongs to machining manufacturing technology field, specially refers to parts and processes used clamp fixture.
Background technology
In making processing industry, for example body in white of automobile industry assembling, the function of anchor clamps is that the position of each part according to design positioned and clamp, and by modes such as welding or bondings, is solidified in the position of part.The clamping and positioning mode of conventional brace all is to utilize the column of having good positioning on the soleplate of precision manufacturing, utilizes jaw briquetting and alignment pin that sheet metal component is positioned and compresses on column; Briquetting and alignment pin are that requirement is pinpoint, adopt the mode that compresses between anchor clamps locating surface and the part, and promptly the zero clearance cooperates, and adopts matched in clearance between alignment pin and the part locating hole.The aperture of part changes in certain tolerance, and the alignment pin of anchor clamps is because frayed, and its pin footpath also gradually changes, what alignment pin and part locating hole adopted is matched in clearance, inevitably occur cooperating deviation, be accumulated in together, can cause very big assembly precision deviation.
The utility model content
The purpose of this utility model is to propose a kind of positioning fixture that can reduce position error.
Positioning fixture of the present utility model comprises back-up block and is arranged on the interior alignment pin of back-up block, key is that the head end of described alignment pin is taper, tail end is provided with limited impression, described limited impression is fastened in the spacing hole of a limiting plate, and the spacing hole of described limited impression and limiting plate is a matched in clearance; The tail end of described alignment pin and an elastic mechanism offset.
The utility model utilizes the alignment pin of taper to fix workpiece, when the aperture of workpiece locating hole changes or alignment pin self wearing and tearing and when pin is directly changed, this alignment pin can both be under the effect of the elastic mechanism of its tail end adaptive arrival cooperation position, the taper surface of its head end keeps the zero clearance to cooperate with the locating hole of workpiece all the time, thereby reduces position error.Limiting plate cooperates with limited impression, can prevent that alignment pin breaks away from positioning fixture.
Described elastic mechanism inside is provided with cylinder or spring, utilizes cylinder or spring to realize resiliency urged to alignment pin, to guarantee that alignment pin can adaptive arrival cooperation position.The elastic force of said cylinder or spring should keep within the specific limits, in order to avoid make alignment pin not in place or make workpiece deformation because of elastic force is excessive because of elastic force is not enough.
The tail end of described alignment pin is installed in the elastic mechanism, described elastic mechanism be installed in be parallel to alignment pin to guiding mechanism in.Above-mentioned guiding mechanism can guarantee that elastic mechanism moves axially along alignment pin, and the tail end of alignment pin is installed in the elastic mechanism, strikes up partnership with elastic mechanism, under the cooperation of limiting plate, can prevent alignment pin generation lateral deviation like this, in order to avoid the location is inaccurate.Above-mentioned guiding mechanism can be the casing towards alignment pin one end opening.
Described back-up block is made by magnetic materials such as electromagnet or magnet steel, and some workpiece of being made by iron and steel are adsorbed, and workpiece and back-up block are fitted tightly, and has further guaranteed accurate positioning.
The utility model adopts a kind of floating type conical dowel pin, remaining the zero clearance between the alignment pin that makes anchor clamps and the workpiece locating hole cooperates, no matter the workpiece varying aperture still is the alignment pin wearing and tearing of anchor clamps, can not endanger cooperating between locating hole and the alignment pin, thereby realize higher workpiece rigging position precision.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Describe the utility model in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the positioning fixture of present embodiment comprises back-up block 2 and is arranged on alignment pin 3 in the back-up block 2, described alignment pin 3 is made by the material with enough hardness and wearability, its head end is taper, tail end is provided with limited impression 6, described limited impression 6 is fastened in the spacing hole 7 of a limiting plate 4, and described limited impression 6 is a matched in clearance with the spacing hole 7 of limiting plate; The tail end of described alignment pin 3 is installed in the elastic mechanism 5, described elastic mechanism 5 be installed in be parallel to alignment pin to guiding mechanism 8 in, guiding mechanism 8 is the casing towards alignment pin one end opening.
The inside of described elastic mechanism 5 is provided with spring, utilizes spring to realize resiliency urged to alignment pin 3, to guarantee that alignment pin 3 can adaptive arrival cooperation position.
Described back-up block 2 is made by electromagnet, when the location workpiece 1 is adsorbed, and guarantees that back-up block 2 and workpiece 1 fit tightly accurate positioning; After assembling finishes, by the power supply of closing electromagnet the magnetic of electromagnet is disappeared, jacking workpiece 1 makes it break away from alignment pin 3.

Claims (4)

1. positioning fixture, comprise back-up block and be arranged on the interior alignment pin of back-up block, the head end that it is characterized in that described alignment pin is taper, tail end is provided with limited impression, described limited impression is fastened in the spacing hole of a limiting plate, and the spacing hole of described limited impression and limiting plate is a matched in clearance; The tail end of described alignment pin and an elastic mechanism offset.
2. positioning fixture according to claim 1 is characterized in that described elastic mechanism inside is provided with cylinder or spring.
3. positioning fixture according to claim 1 is characterized in that the tail end of described alignment pin is installed in the elastic mechanism, described elastic mechanism be installed in be parallel to alignment pin to guiding mechanism in.
4. according to claim 1 or 2 or 3 described positioning fixtures, it is characterized in that described back-up block made by magnetic material.
CN2009202381799U 2009-10-30 2009-10-30 Locating fixture Expired - Fee Related CN201544151U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202381799U CN201544151U (en) 2009-10-30 2009-10-30 Locating fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202381799U CN201544151U (en) 2009-10-30 2009-10-30 Locating fixture

Publications (1)

Publication Number Publication Date
CN201544151U true CN201544151U (en) 2010-08-11

Family

ID=42599311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202381799U Expired - Fee Related CN201544151U (en) 2009-10-30 2009-10-30 Locating fixture

Country Status (1)

Country Link
CN (1) CN201544151U (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102001067A (en) * 2010-12-07 2011-04-06 江苏柳工机械有限公司 Hole and surface positioning mechanism
CN102059671A (en) * 2010-12-07 2011-05-18 江苏柳工机械有限公司 Connecting rod positioning mechanism
CN102773571A (en) * 2012-05-11 2012-11-14 苏州金牛精密机械有限公司 Round rod side hole tapping clamp
CN104029123A (en) * 2014-07-02 2014-09-10 无锡诚石轴承有限公司 Automatic positioning and quick clamping mechanism
CN105252277A (en) * 2015-10-27 2016-01-20 郑州飞龙汽车部件有限公司 System and method for producing pump body of engine water pump
CN105382742A (en) * 2014-08-25 2016-03-09 通用汽车环球科技运作有限责任公司 Part holding assembly, an assembly system and a method of positioning a first part
CN107378853A (en) * 2017-05-31 2017-11-24 芜湖莫森泰克汽车科技股份有限公司 Skylight mechanism spring assembling device
US9971336B2 (en) 2015-08-19 2018-05-15 GM Global Technology Operations LLC Part holding assembly, an assembly system and a method of locating and securing a part
US10112666B2 (en) 2015-08-19 2018-10-30 GM Global Technology Operations LLC Part holding assembly, an assembly system and a method of locating and securing a part
CN111360730A (en) * 2020-03-02 2020-07-03 立讯智造(浙江)有限公司 Platform carrier assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102001067A (en) * 2010-12-07 2011-04-06 江苏柳工机械有限公司 Hole and surface positioning mechanism
CN102059671A (en) * 2010-12-07 2011-05-18 江苏柳工机械有限公司 Connecting rod positioning mechanism
CN102773571A (en) * 2012-05-11 2012-11-14 苏州金牛精密机械有限公司 Round rod side hole tapping clamp
CN104029123A (en) * 2014-07-02 2014-09-10 无锡诚石轴承有限公司 Automatic positioning and quick clamping mechanism
CN105382742B (en) * 2014-08-25 2019-02-12 通用汽车环球科技运作有限责任公司 Part keeps component, package system and the method for positioning the first part
CN105382742A (en) * 2014-08-25 2016-03-09 通用汽车环球科技运作有限责任公司 Part holding assembly, an assembly system and a method of positioning a first part
US10112307B2 (en) 2014-08-25 2018-10-30 GM Global Technology Operations LLC Part holding assembly, an assembly system and a method of positioning a first part
US9971336B2 (en) 2015-08-19 2018-05-15 GM Global Technology Operations LLC Part holding assembly, an assembly system and a method of locating and securing a part
US10112666B2 (en) 2015-08-19 2018-10-30 GM Global Technology Operations LLC Part holding assembly, an assembly system and a method of locating and securing a part
CN105252277A (en) * 2015-10-27 2016-01-20 郑州飞龙汽车部件有限公司 System and method for producing pump body of engine water pump
CN107378853A (en) * 2017-05-31 2017-11-24 芜湖莫森泰克汽车科技股份有限公司 Skylight mechanism spring assembling device
CN111360730A (en) * 2020-03-02 2020-07-03 立讯智造(浙江)有限公司 Platform carrier assembly

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Legal Events

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

Granted publication date: 20100811

Termination date: 20131030

C17 Cessation of patent right