CN105081809A - Pressing plate fixture for positioning machined precisely-cast blank and use method - Google Patents

Pressing plate fixture for positioning machined precisely-cast blank and use method Download PDF

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Publication number
CN105081809A
CN105081809A CN201510580773.6A CN201510580773A CN105081809A CN 105081809 A CN105081809 A CN 105081809A CN 201510580773 A CN201510580773 A CN 201510580773A CN 105081809 A CN105081809 A CN 105081809A
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clamp jig
cast blank
auxiliary positioning
muscle
precision cast
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CN201510580773.6A
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CN105081809B (en
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周然
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Tianjin 712 Communication and Broadcasting Co Ltd
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Tianjin 712 Communication and Broadcasting Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention relates to a pressing plate fixture for positioning a machined precisely-cast blank and a use method. According to assembly relations and assembly sizes of specific product types, by means of printed board guide rail grooves formed in the two ends in a product machine box cavity, the pressing plate fixture corresponding to the printed board guide rail grooves is designed and manufactured, and the pressing plate fixture is buckled with the casting blank. Besides, a positioning standard is obtained on a machine tool by means of the appearance of the pressing plate fixture. The pressing plate fixture for positioning the machined precisely-cast blank and the use method have the effects that the low-cost precise casting machining technology is guaranteed, cost is reduced, the production period is shortened, the quality and the volume guarantee capacity of machined parts are improved, and economic benefits are increased.

Description

A kind of clamp jig of machining precision cast blank part location and using method
Technical field
The present invention relates to clamp jig and the using method of a kind of machining precision cast blank part location, for the location before the communicating machine casing blank machined of war products cell board and motherboard blindmate type package assembly.
Background technology
I mostly is guide tracked blindmate type general assembly mode at Products design, and the feature of this kind of design is mainly reflected in, and requires that foundry goods can not have the draft angle of common die casting madial wall, so the mode of precision casting must be adopted to process spray during batch production.Due to plaster mold hot investment casting itself dimensional tolerance and rough surface plates, flatness, build-up tolerance requirement and air-tightness requirement cannot be ensured, so machining processes need be carried out to having the position of build-up tolerance requirement and the position that has air-tightness to require.Plaster precision foundry part due to foundry technology process long, the shaping relating to wax, plaster mold and aluminium alloy castings in intermediate processing steps is many relative to other mold castings with contraction uncontrollable factor, in addition casting gypsum is national strategy resource, be subject to government of western countries export restrictions to China for a long time, and the shrinkage ratio of domestic gypsum is always unstable, the casting distortion causing precision castings blank is inconsistent, the feature of irregularities.
For this difficult problem of reply plaster precision foundry blank distortion irregularities, our factory is before this processing method of use, and on the product type that production lot is larger, spray adopts the processing method of unified positioning datum.Although this processing method working (machining) efficiency is higher and can ensure the production cycle, there will be the percent defective of 30% ~ 40%, greatly improve production cost.And on the product type that production lot is less, adopt blank one by one to measure, the method for machining benchmark is adjusted according to the size distortion situation of single blank.The rate although this kind of method can be reduced the number of rejects and seconds, production and processing efficiency is very low.The also product of some model, even directly avoids this production technology of plaster precision foundry, directly adopts the method for the high Milling Machining+Linear cut of processing cost to shape.
Summary of the invention
In view of the situation of prior art, the invention provides a kind of clamp jig for machining precision cast blank part location and using method, with the machined thinking that machining benchmark is as far as possible consistent with using benchmark, determine using communication equipment printed board plug-in mounting guide-track groove as positioning datum, the structure of clamp jig is commonly used frock clamp according to printed board plug-in mounting guide-track groove structural design with milling machine and is combined, fuzzy location combines with accurate location, to solve the problem that precision castings blank cannot find consistent machining benchmark, guarantee machining accuracy, the blindmate of cell board and motherboard is realized when ensureing the product final assemble after machining.
The present invention for achieving the above object, the technical scheme adopted is: a kind of clamp jig of machining precision cast blank part location, it is characterized in that: described clamp jig is rectangular-shaped, the boss face of clamp jig is respectively equipped with two rectangular openings, two trapezoidal holes, two rectangular openings are arranged between two trapezoidal holes, the face, a long limit of boss is provided with two auxiliary positioning muscle I, article two, be provided with an inner chamber positioning bar I between auxiliary positioning muscle I, article two, the end face that auxiliary positioning muscle I is outside is respectively equipped with two concave wall, another face, long limit of boss is provided with two auxiliary positioning muscle II, article two, be provided with an inner chamber positioning bar II between auxiliary positioning muscle II, inner chamber positioning bar I and inner chamber positioning bar II is symmetrical, article two, auxiliary positioning muscle I, article two, auxiliary positioning muscle II, inner chamber positioning bar I, above inner chamber positioning bar II, outside angle is oblique angle, two trapezoidal holes on boss two minor faces and the face between two auxiliary positioning muscle II are respectively equipped with two main positioning bars and two auxiliary positioning muscle III, the centre position of two outside end faces of main positioning bar is respectively equipped with a protruding I, one side position of two outside end faces of auxiliary positioning muscle III is respectively equipped with a protruding II, in boss face between two rectangular openings, be provided with two symmetrical protruding blocks, be stopper slot between two protruding blocks.
A using method for the clamp jig of machining precision cast blank part location, is characterized in that: step is as follows,
The first step: by clamp jig spiral-lock on precision cast blank, clamp jig is by two auxiliary positioning muscle I, article two, auxiliary positioning muscle II, inner chamber positioning bar I, outside oblique angle above inner chamber positioning bar II is placed in the chamber of precision cast blank easily, make two concave wall of two auxiliary positioning muscle I at two ends, clamp jig left and right, the protruding I of two main positioning bars, the protruding II of two auxiliary positioning muscle III inserts in the printed board guide-track groove that two ends in precision cast blank chamber are provided with respectively, a screw projection simultaneously in precision cast blank chamber also inserts in the stopper slot between clamp jig two protruding blocks, make the combination that clamp jig and precision cast blank obtain,
Second step: the assigned address precision cast blank covering clamp jig being arranged on plain-milling machine or numerical control machining center fixture, make to be fixed fixture I and to be fixed fixture II upper side frame that is common and clamp jig to be close to, clamp jig is located in Y direction, the side frame being simultaneously fixed fixture III and clamp jig is close to, clamp jig is located in X-direction, thus determines the position of precision cast blank X-axis, Y-axis on plain-milling machine or numerical control machining center bed surface;
3rd step: after clamp jig completes location, compress the pressing plate of precision cast blank part both sides, precision cast blank is fixed on plain-milling machine or numerical control machining center, removed by clamp jig, the procedure machine finished in advance according to machining center in plain-milling machine or digital control processing can the work surface of processing precise cast blank again.
The invention has the beneficial effects as follows: according to assembly relation and the fitted position of the concrete model of product, utilize the printed board guide-track groove that in product cabinet chamber, two ends are provided with, design and produce the clamp jig corresponded, by clamp jig together with spray spiral-lock, and the profile of clamp jig is utilized to obtain positioning datum on machining tool; The blank obtaining positioning datum is fixed on lathe bed surface, removes clamp jig, machined is carried out to blank, effectively can solve and use unified positioning datum, the problem that Milling Machining shaping precision cast blank part percent defective is high; Also solve and measure its locating and machining benchmark of blank size adjusting one by one, the production efficiency problem that Milling Machining is shaped.
In addition, clamp jig is cheap for manufacturing cost, using method is simple, it is efficient and convenient to be installed, Milling Machining is without other technologies difficulty, general milling machine workman all can skilled operation after simple guidance, ensure that the application of this production technology of plaster precision foundry on our factory product.The production technology that its batch production cost compares the traditional Milling Machining cabinet profile ledger line cutting processing shaping cabinet cavity of our factory saves 50% ~ 60% especially.Because precision cast blank adds the cabinet that groove location Milling Machining method is finally shaped, machining benchmark and the unification using benchmark are accomplished, make it have the printed board unit plate of assembly relation and the blindmate precision of motherboard in assembling stage inside, be better than the higher numerical control machining center of manufacturing cost and add linear cutter manufacture technics cabinet.
In a word, both ensured the use of this low cost processing technology of hot investment casting, reduced cost, shortened the production cycle, and turn improved the quality level of the parts after processing and batch supportability, improve economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the structural representation of precision cast blank;
Fig. 4 is Fig. 3 upward view;
Fig. 5 is using state schematic diagram of the present invention;
Fig. 6 is Fig. 5 sectional view.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, a kind of clamp jig of machining precision cast blank part location, clamp jig 1 is rectangular-shaped, the boss 1-1 face of clamp jig 1 is respectively equipped with two rectangular opening 1-2, two trapezoidal hole 1-3, two rectangular opening 1-2 are arranged between two trapezoidal hole 1-3, the face, a long limit of boss 1-1 is provided with two auxiliary positioning muscle I1-4, article two, be provided with an inner chamber positioning bar I1-5 between auxiliary positioning muscle I1-4, article two, the end face that auxiliary positioning muscle I1-4 is outside is respectively equipped with two concave wall 1-4-1, another face, long limit of boss 1-1 is provided with two auxiliary positioning muscle II1-6, article two, be provided with an inner chamber positioning bar II1-7 between auxiliary positioning muscle II1-6, inner chamber positioning bar I1-5 and inner chamber positioning bar II1-7 is symmetrical, article two, auxiliary positioning muscle I1-4, article two, auxiliary positioning muscle II1-6, inner chamber positioning bar I1-5, above inner chamber positioning bar II1-7, outside angle is oblique angle 1-9, face between two trapezoidal hole 1-3 and two auxiliary positioning muscle II1-6 on boss 1-1 two minor faces is respectively equipped with two main positioning bar 1-8 and two auxiliary positioning muscle III1-10, the centre position of two outside end faces of main positioning bar 1-8 is respectively equipped with a protruding I1-8-1, one side position of two outside end faces of auxiliary positioning muscle III1-10 is respectively equipped with a protruding II1-10-1, in boss face between two rectangular opening 1-2, be provided with two symmetrical protruding block 1-11, be stopper slot 1-11-1 between two protruding block 1-11.
As shown in Figures 3 to 6, a kind of using method of clamp jig of machining precision cast blank part location, step is as follows:
The first step: by clamp jig 1 spiral-lock on precision cast blank 2, clamp jig 1 is by two auxiliary positioning muscle I1-4, article two, auxiliary positioning muscle II1-6, inner chamber positioning bar I1-5, outside oblique angle 1-9 above inner chamber positioning bar II1-7 is placed in the chamber of precision cast blank 2 easily, make two concave wall 1-4-1 of two auxiliary positioning muscle I1-4 at clamp jig about 1 two ends, the protruding I1-8-1 of two main positioning bar 1-8, the protruding II1-10-1 of two auxiliary positioning muscle III1-10 inserts in the printed board guide-track groove 2-2 that two ends in precision cast blank 2 chamber are provided with respectively, the protruding 2-3 of a screw simultaneously in precision cast blank 2 chamber also inserts in the stopper slot 1-11-1 between clamp jig 1 two protruding block 1-11, clamp jig 1 spiral-lock is on precision cast blank 2, make the combination that clamp jig 1 and precision cast blank 2 obtain.
Second step: the assigned address precision cast blank 2 covering clamp jig 1 being arranged on plain-milling machine or numerical control machining center fixture, make to be fixed fixture I3 and to be fixed fixture II4 upper side frame that is common and clamp jig 1 to be close to, clamp jig 1 is located in Y direction, the side frame being simultaneously fixed fixture III5 and clamp jig 1 is close to, by clamp jig 1 in X-direction location, thus determine the position of precision cast blank 2 X-axis, Y-axis on plain-milling machine or numerical control machining center bed surface.
3rd step: after clamp jig 1 completes location, compress the pressing plate 6 of precision cast blank 2 both sides, precision cast blank 2 is fixed on plain-milling machine or numerical control machining center, again clamp jig 1 is removed, the procedure machine finished in advance according to machining center in plain-milling machine or digital control processing can the work surface of processing precise cast blank 2, improve precision cast blank 2 process after quality level and batch supportability.

Claims (2)

1. the clamp jig of a machining precision cast blank part location, it is characterized in that: described clamp jig (1) is for rectangular-shaped, boss (1-1) face of clamp jig (1) is respectively equipped with two rectangular openings (1-2), two trapezoidal holes (1-3), two rectangular openings (1-2) are arranged between two trapezoidal holes (1-3), the face, a long limit of boss (1-1) is provided with two auxiliary positioning muscle I(1-4), article two, auxiliary positioning muscle I(1-4) between be provided with an inner chamber positioning bar I(1-5), article two, auxiliary positioning muscle I(1-4) outside end face is respectively equipped with two concave wall (1-4-1), another face, long limit of boss (1-1) is provided with two auxiliary positioning muscle II(1-6), article two, auxiliary positioning muscle II(1-6) between be provided with an inner chamber positioning bar II(1-7), inner chamber positioning bar I(1-5) and inner chamber positioning bar II(1-7) symmetrical, article two, auxiliary positioning muscle I(1-4), article two, auxiliary positioning muscle II(1-6), inner chamber positioning bar I(1-5), inner chamber positioning bar II(1-7) above outside angle be oblique angle (1-9), two trapezoidal holes (1-3) on boss (1-1) two minor faces and two auxiliary positioning muscle II(1-6) between face on be respectively equipped with two main positioning bars (1-8) and two auxiliary positioning muscle III(1-10), the centre position of two outside end faces of main positioning bar (1-8) is respectively equipped with a protruding I(1-8-1), two auxiliary positioning muscle III(1-10) outwards a side position of end face be respectively equipped with a protruding II(1-10-1), in boss face between two rectangular openings (1-2), be provided with two symmetrical protruding blocks (1-11), be stopper slot (1-11-1) between two protruding blocks (1-11).
2. a using method for the clamp jig of machining precision cast blank part location, is characterized in that: step is as follows,
The first step: by clamp jig (1) spiral-lock on precision cast blank (2), clamp jig (1) is by two auxiliary positioning muscle I(1-4), article two, auxiliary positioning muscle II(1-6), inner chamber positioning bar I(1-5), inner chamber positioning bar II(1-7) above outside oblique angle (1-9) be placed in the chamber of precision cast blank (2) easily, make two auxiliary positioning muscle I(1-4 at clamp jig (1) two ends, left and right) two concave wall (1-4-1), the protruding I(1-8-1 of two main positioning bars (1-8)), two auxiliary positioning muscle III(1-10) protruding II(1-10-1) insert in the printed board guide-track groove (2-2) that two ends in precision cast blank (2) chamber are provided with respectively, a screw projection (2-3) simultaneously in precision cast blank (2) chamber also inserts in the stopper slot (1-11-1) between clamp jig (1) two protruding block (1-11), make the combination that clamp jig (1) and precision cast blank (2) obtain,
Second step: the assigned address precision cast blank (2) covering clamp jig (1) being arranged on plain-milling machine or numerical control machining center fixture, make to be fixed fixture I(3) and be fixed fixture II(4) upper side frame that is common and clamp jig (1) is close to, clamp jig (1) is located in Y direction, be fixed fixture III(5 simultaneously) be close to the side frame of clamp jig (1), clamp jig (1) is located in X-direction, thus determine precision cast blank (2) X-axis on plain-milling machine or numerical control machining center bed surface, the position of Y-axis,
3rd step: after clamp jig (1) completes location, compress the pressing plate (6) of precision cast blank (2) part both sides, precision cast blank (2) is fixed on plain-milling machine or numerical control machining center, removed by clamp jig (1), the procedure machine finished in advance according to machining center in plain-milling machine or digital control processing can the work surface of processing precise cast blank (2) again.
CN201510580773.6A 2015-09-14 2015-09-14 Pressing plate fixture for positioning machined precisely-cast blank and use method Active CN105081809B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736683A (en) * 2016-12-14 2017-05-31 天津七二通信广播股份有限公司 A kind of positioning fixture and application method for the processing of hot investment casting part

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100103144A (en) * 2009-03-13 2010-09-27 대구텍 유한회사 Tool holder clamp assembly for cutting inserts and its pressing plate
CN202780557U (en) * 2012-08-20 2013-03-13 珠海市润星泰电器有限公司 Combined fixture for bearing hole in die casting piece
CN103286587A (en) * 2013-06-22 2013-09-11 芜湖盛力科技股份有限公司 Machining center tool and operation method thereof
CN204603826U (en) * 2015-04-21 2015-09-02 天津市汇通仪器设备公司 Connecting rod processing clamp
CN204935143U (en) * 2015-09-14 2016-01-06 天津七一二通信广播有限公司 A kind of clamp jig of machining precision cast blank part location

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100103144A (en) * 2009-03-13 2010-09-27 대구텍 유한회사 Tool holder clamp assembly for cutting inserts and its pressing plate
CN202780557U (en) * 2012-08-20 2013-03-13 珠海市润星泰电器有限公司 Combined fixture for bearing hole in die casting piece
CN103286587A (en) * 2013-06-22 2013-09-11 芜湖盛力科技股份有限公司 Machining center tool and operation method thereof
CN204603826U (en) * 2015-04-21 2015-09-02 天津市汇通仪器设备公司 Connecting rod processing clamp
CN204935143U (en) * 2015-09-14 2016-01-06 天津七一二通信广播有限公司 A kind of clamp jig of machining precision cast blank part location

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736683A (en) * 2016-12-14 2017-05-31 天津七二通信广播股份有限公司 A kind of positioning fixture and application method for the processing of hot investment casting part

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