CN203527043U - Clamp for fine boring of connecting rods - Google Patents

Clamp for fine boring of connecting rods Download PDF

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Publication number
CN203527043U
CN203527043U CN201320606542.4U CN201320606542U CN203527043U CN 203527043 U CN203527043 U CN 203527043U CN 201320606542 U CN201320606542 U CN 201320606542U CN 203527043 U CN203527043 U CN 203527043U
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CN
China
Prior art keywords
board
conehead
pin
connecting rod
guide
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.)
Withdrawn - After Issue
Application number
CN201320606542.4U
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Chinese (zh)
Inventor
叶显旺
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.)
Liuzhou Bright Space Machinery Co Ltd
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Liuzhou Bright Space Machinery Co Ltd
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Publication date
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Priority to CN201320606542.4U priority Critical patent/CN203527043U/en
Application granted granted Critical
Publication of CN203527043U publication Critical patent/CN203527043U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model discloses a clamp for fine boring of connecting rods, and relates to the technical field of manufacturing of machining process equipment. The clamp comprises a clamp body with a supporting plate part, wherein the supporting plate part is provided with a large-end locating device and a locating mandrel, a pressing device is arranged at the position close to the large-end locating device, a conical head bearing device and a V-type bearing device are arranged on the upper side and the lower side of the locating mandrel respectively, the conical head bearing device comprises an abutting plate and a pin sleeve, the abutting plate is arranged at the upper end of the supporting plate part, the pin sleeve penetrates through the abutting plate and is provided with a limit hole, the pin sleeve is connected with a pressing screw and a conical head bearing pin sequentially from top to bottom, the upper portion of the pressing screw extends out of the upper end face of the pin sleeve, the conical head bearing pin is in abutting connection with the pressing screw and is clamped on the limit hole of the pin sleeve through a first spring, and the lower portion of the conical head bearing pin extends out of the lower end face of the pin sleeve. Compared with the prior art, the clamp for fine boring of the connecting rods has the advantages that the pressing screw drives the conical head bearing pin to move vertically, and influence on accurate clamping and locating from a small amount of power generated in the tangential direction of the pressing screw and threaded fit clearance is eliminated.

Description

Connecting rod fixture for fine boring
Technical field
The utility model relates to mechanical processing technique equipment manufacturing technology field, especially a kind of boring jig for right boring is carried out in large and small hole of connecting rod.
Background technology
Large and small hole operation of right boring connecting rod is one of critical process of processing connecting rod, is to determine the dimensional accuracy in large and small hole of connecting rod and the assurance whether positional precision reaches designing requirement; Conventionally when right boring is carried out in large and small hole of connecting rod, must adopt a kind of fixture to position clamping to connecting rod.Existing a kind of connecting rod fixture for fine boring, this connecting rod fixture for fine boring comprises the clamp body that props up board that is provided with seat board portion and links with this seat board portion, on described board, be fixed with major part positioner and be movably equipped with positioning core axle, described board is provided with hold down gag at nearly described major part positioner place, is respectively equipped with conehead supporting arrangement and v-shaped bearing device in the above and below of described positioning core axle; Described conehead supporting arrangement comprises the attachment strap that is positioned at described positioning core axle top, on described attachment strap, by screw thread, is coated with housing screw, and the lower end of described housing screw is provided with one section of cone.In use there is following deficiency in this connecting rod fixture for fine boring: while 1, small end of connecting rod portion being carried out to auxiliary clamp, tighten housing screw and can produce a micro-power in the tangential direction of housing screw, make small end of connecting rod portion produce micro-strain, complete bore hole and unload deformation resilience after lower link, the precision of processing will decrease; 2, because housing screw and attachment strap are threaded connection, there is certain gap in internal and external threads cooperation, affect the accurate of connecting rod location and processing, especially large on the depth of parallelism impact between connecting rod concentric reducer hole, between connecting rod concentric reducer hole, parallelism precision qualification rate is 75%.
Utility model content
Technical problem to be solved in the utility model is to provide and a kind ofly prevents that small end of connecting rod portion from producing micro-strain, accurate positioning, the connecting rod fixture for fine boring that bore hole precision is high.
In order to address the above problem, the technical solution adopted in the utility model is: this connecting rod fixture for fine boring, comprise the clamp body that is provided with a board, on described board, be fixed with major part positioner and be movably equipped with positioning core axle, described board is provided with hold down gag at nearly described major part positioner place, in the upper and lower both sides of described positioning core axle, be respectively equipped with conehead supporting arrangement and v-shaped bearing device, described conehead supporting arrangement comprises and is located at the attachment strap of described board upper end and is installed on the guide that is provided with spacing hole on described attachment strap, described guide is connected with successively from top to down top and stretches out the housing screw of its guide upper surface and the conehead fulcrum post connecting with described housing screw, described conehead fulcrum post is contained on the spacing hole of described guide by suit the first Spring Card thereon, the lower surface of its guide is stretched out in the bottom of described conehead fulcrum post.
In above-mentioned connecting rod fixture for fine boring technical scheme, technical scheme can also be more specifically: described major part positioner comprises major part supporting and supports the positioning support of lower end cut-grafting with described major part, is provided with side and determines piece on described positioning support.
Further, described hold down gag comprises the pressing plate being connected with described board with bearing pin by push rod, and the upper end of described pressing plate is provided with the groove of U-shaped, in described groove, is provided with pressure ring, and described pressure ring is positioned at the top that described side is determined piece; At the middle part of described pressing plate, be provided with the pull bar that installed its sidewall and described board, described pull bar is set with the second spring on one section of body of rod between described pressing plate and described board; Described pull bar stretches out described one end of propping up board and threaded block is housed and is sleeved on the nut on described threaded block, and a side of described nut is provided with stop nut, on described nut, handle is housed.
Further, described v-shaped bearing device comprises that upper articulation has V-block, and bottom is provided with the V-block pin of positioning table; Described V-block pin is fixed on a described board by upper bracket, and described V-block pin is set with the 3rd spring on one section of shank between its positioning table and described upper bracket; Below described V-block pin, be provided with the lower conehead fulcrum post that the lower surface with described positioning table connects, described lower conehead fulcrum post is connected with lower supporting frame by screw thread, and described lower supporting frame is fixed on a described board.
Owing to having adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, propping up board upper end is provided with attachment strap and is installed on the guide that is provided with spacing hole on attachment strap, guide is connected with housing screw and conehead fulcrum post from top to down successively, conehead fulcrum post is contained on the spacing hole of guide by suit the first Spring Card thereon, and the lower surface of its guide is stretched out in the bottom of conehead fulcrum post.Rotating housing screw drives conehead fulcrum post to move down compression small end of connecting rod, during housing screw convolution, under the effect of spring, make conehead fulcrum post return, conehead fulcrum post is only made upper and lower rectilinear motion, has eliminated that tangential direction at housing screw produces micro-power and Screw Thread Fit Clearance affects accurately on clamping position.
2, between connecting rod concentric reducer hole, parallelism precision qualification rate reaches more than 90%, has improved approximately 15%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the connecting rod of the utility model embodiment.
Fig. 2 is the structural representation of the utility model embodiment.
Fig. 3 is the cutaway view at A-A place of Fig. 2.
Fig. 4 is the cutaway view at B-B place of Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail:
Be illustrated in figure 1 the present embodiment and need the connecting rod of clamping position, the hole that big end hole 29 of connecting rod and microcephaly hole 28 need to carry out right boring.
As Fig. 2, Fig. 3, a kind of connecting rod fixture for fine boring shown in Fig. 4, comprise the clamp body 1 with a board, on board, major part positioner is fixedly housed and positioning core axle 11 is equipped with in activity, positioning core axle 11 is installed on a board by location guide pin bushing 10, prop up board, at nearly major part positioner place, hold down gag is housed, at positioning core axle, Shang Xia 11, conehead supporting arrangement and v-shaped bearing device are housed respectively both sides, conehead supporting arrangement comprises and is contained in the attachment strap 6 of board upper end and is installed on the guide with spacing hole 8 on attachment strap 6, guide 8 connects the housing screw 7 that stretches out its guide 8 upper surfaces in top and the conehead fulcrum post 9 connecting with housing screw 7 is housed successively from top to down, conehead fulcrum post 9 is installed on the spacing hole of guide 8 by suit the first spring 27 thereon, the lower surface of its guide 8 is stretched out in the bottom of conehead fulcrum post 9, major part positioner comprises the major part supporting 5 being fixed by bolts on board and supports the positioning support 2 of 5 lower end cut-graftings with major part, and side is housed on positioning support 2 and determine piece 25, positioning support 2 is fixed by bolts to and props up on board.
Hold down gag comprises the pressing plate 3 being connected with a board with bearing pin 20 by push rod 19, pressing plate 3 is hinged by bearing pin 20 and push rod 19, and push rod 19 is through propping up board and fixing by nut, and the upper end of pressing plate 3 has the groove of U-shaped, pressure ring 4 is housed in groove, and pressure ring 4 is positioned at the top that side is determined piece 25; The pull bar 18 that installed its sidewall and a board is housed at the middle part of pressing plate 3, and pull bar 18 is set with the second spring 26 on one section of body of rod between pressing plate 3 and a board; One end that pull bar 18 stretches out board is equipped with threaded block 23 and is sleeved on the nut 22 on threaded block 23, and a side of nut 22 is equipped with cushion block and two stop nuts 21, and handle 24 is housed on nut 22.
V-shaped bearing device comprises that upper articulation has V-block 12, and bottom has the V-block pin 13 of positioning table; V-block pin 13 is fixed on a board by upper bracket 14, one side of V-block pin 13 has one section of groove vertically, the position corresponding with the groove of V-block pin 13 at upper bracket 14 is processed with screwed hole, the screw stretching in groove is housed in screwed hole, and V-block pin 13 is set with the 3rd spring 15 on one section of shank between its positioning table and upper bracket 14; The lower conehead fulcrum post 16 that lower surface with its positioning table connects is housed below V-block pin 13, and lower conehead fulcrum post 16 is connected with lower supporting frame 17 by screw thread, and lower supporting frame 17 is fixed on a board.
During work, connecting rod small end hole 28 is enclosed within on location mandril 11, the side of big end is placed on side and determines on piece 25, end face is adjacent to major part supporting 5, pulling handle 24 makes nut 22 move towards stop nut 21 directions, drive pull bar 18 to move in the same way, by pull bar 18, pull pressing plate 3 and pressure ring 4 to compress the end face of big end; Rotate lower conehead fulcrum post 16 by V-block pin 13 jack-up upwards, by V-block pin 13, make V-block 12 hold out against the lower end of small end of connecting rod; Rotate housing screw 7 promotion conehead fulcrum posts 9 and move down, compress the upper end of small end of connecting rod, exit location mandril 11, simultaneously right boring connecting rod small end hole 28 and big end hole 29.

Claims (4)

1. a connecting rod fixture for fine boring, comprise the clamp body (1) that is provided with a board, on described board, be fixed with major part positioner and be movably equipped with positioning core axle (11), described board is provided with hold down gag at nearly described major part positioner place, in the upper and lower both sides of described positioning core axle (11), be respectively equipped with conehead supporting arrangement and v-shaped bearing device, it is characterized in that: described conehead supporting arrangement comprises and is located at the attachment strap (6) of described board upper end and is installed on the guide that is provided with spacing hole (8) on described attachment strap (6), described guide (8) is connected with successively from top to down top and stretches out the housing screw (7) of its guide (8) upper surface and the conehead fulcrum post (9) connecting with described housing screw (7), described conehead fulcrum post (9) is installed on the spacing hole of described guide (8) by suit the first spring (27) thereon, the lower surface of its guide (8) is stretched out in the bottom of described conehead fulcrum post (9).
2. connecting rod fixture for fine boring according to claim 1, it is characterized in that: described major part positioner comprises major part supporting (5) and supports the positioning support (2) of (5) lower end cut-grafting with described major part, is provided with side and determines piece (25) on described positioning support (2).
3. connecting rod fixture for fine boring according to claim 1 and 2, it is characterized in that: described hold down gag comprises the pressing plate (3) being connected with described board with bearing pin (20) by push rod (19), the upper end of described pressing plate (3) is provided with the groove of U-shaped, in described groove, be provided with pressure ring (4), described pressure ring (4) is positioned at the top that described side is determined piece (25); At the middle part of described pressing plate (3), be provided with the pull bar (18) that installed its sidewall and described board, described pull bar (18) is set with the second spring (26) on one section of body of rod between described pressing plate (3) and described board; Described pull bar (18) stretches out described one end of propping up board and threaded block (23) is housed and is sleeved on the nut (22) on described threaded block (23), one side of described nut (22) is provided with stop nut (21), and handle (24) is housed on described nut (22).
4. connecting rod fixture for fine boring according to claim 3, is characterized in that: described v-shaped bearing device comprises that upper articulation has V-block (12), and bottom is provided with the V-block pin (13) of positioning table; Described V-block pin (13) is fixed on a described board by upper bracket (14), and described V-block pin (13) is set with the 3rd spring (15) on one section of shank between its positioning table and described upper bracket (14); In described V-block pin (13) below, be provided with the lower conehead fulcrum post (16) that the lower surface with described positioning table connects, described lower conehead fulcrum post (16) is connected with lower supporting frame (17) by screw thread, and described lower supporting frame (17) is fixed on a described board.
CN201320606542.4U 2013-09-29 2013-09-29 Clamp for fine boring of connecting rods Withdrawn - After Issue CN203527043U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320606542.4U CN203527043U (en) 2013-09-29 2013-09-29 Clamp for fine boring of connecting rods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320606542.4U CN203527043U (en) 2013-09-29 2013-09-29 Clamp for fine boring of connecting rods

Publications (1)

Publication Number Publication Date
CN203527043U true CN203527043U (en) 2014-04-09

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CN201320606542.4U Withdrawn - After Issue CN203527043U (en) 2013-09-29 2013-09-29 Clamp for fine boring of connecting rods

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495886A (en) * 2013-09-29 2014-01-08 柳州明宇机械有限公司 Connecting rod fine boring fixture
CN105328228A (en) * 2015-11-28 2016-02-17 重庆渝记涵诚机械制造有限公司 Boring method for cam driven part
CN105690249A (en) * 2014-11-24 2016-06-22 东港启鑫科技有限公司 Automatic polishing machine for stainless steel tableware
CN106041590A (en) * 2016-08-24 2016-10-26 中国航天科技集团公司长征机械厂 Fixture for machining parts with symmetrical hole structures

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495886A (en) * 2013-09-29 2014-01-08 柳州明宇机械有限公司 Connecting rod fine boring fixture
CN103495886B (en) * 2013-09-29 2016-09-14 柳州明宇机械有限公司 Connecting rod fixture for fine boring
CN105690249A (en) * 2014-11-24 2016-06-22 东港启鑫科技有限公司 Automatic polishing machine for stainless steel tableware
CN105690249B (en) * 2014-11-24 2017-11-21 东港启鑫科技有限公司 A kind of stainless steel tableware automatic polishing machine
CN105328228A (en) * 2015-11-28 2016-02-17 重庆渝记涵诚机械制造有限公司 Boring method for cam driven part
CN106041590A (en) * 2016-08-24 2016-10-26 中国航天科技集团公司长征机械厂 Fixture for machining parts with symmetrical hole structures
CN106041590B (en) * 2016-08-24 2019-03-05 四川航天长征装备制造有限公司 Clamp for machining with symmetrical holes constitutional detail

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140409

Effective date of abandoning: 20160914

C25 Abandonment of patent right or utility model to avoid double patenting