CN203726223U - Fixture for machining large-head and small-head holes of connecting rods of engines of automobiles - Google Patents

Fixture for machining large-head and small-head holes of connecting rods of engines of automobiles Download PDF

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Publication number
CN203726223U
CN203726223U CN201420092720.0U CN201420092720U CN203726223U CN 203726223 U CN203726223 U CN 203726223U CN 201420092720 U CN201420092720 U CN 201420092720U CN 203726223 U CN203726223 U CN 203726223U
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China
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microcephaly
major
chuck
fixture
rod
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CN201420092720.0U
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Chinese (zh)
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陈景华
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HANGZHOU YUYOU PRECISION MACHINERY Co Ltd
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HANGZHOU YUYOU PRECISION MACHINERY Co Ltd
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Abstract

The utility model discloses a fixture for machining large-head and small-head holes of connecting rods of engines of automobiles. The fixture comprises a small-head fixture body, a large-head fixture body, a supporting seat and a plurality of clamping and positioning units. One of the small-head fixture body and the large-head fixture body can move relative to the supporting seat, each clamping and positioning unit comprises a small-head positioning pin, a large-head positioning pin, a small-head positioning pumping device, a large-head positioning pumping device, a positioning device and a clamping device, each small-head positioning pin can be driven by the corresponding small-head positioning pumping device to pump workpieces, each large-head positioning pin can be driven by the corresponding large-head positioning pumping device to pump the workpieces, the workpieces can be positioned by the positioning devices and can be clamped by the clamping devices, and the positioning devices and the clamping devices are correspondingly arranged on the large-head fixture body. The fixture for machining the large-head and small-head holes of the connecting rods of the engines of the automobiles has the advantages that the workpieces can be automatically clamped by the fixture, and a good clamping effect can be realized; the center distances from large heads to small heads of the positioned connecting rods can be adjusted, so that the fixture is applicable to machining different types of workpieces; the multiple workpieces can be clamped and machined by the aid of the fixture at one step, and accordingly the production efficiency can be greatly improved.

Description

A kind of fixture for processing automobile engine link concentric reducer hole
Technical field
The utility model relates to a kind of for processing the fixture of connecting rod, relates in particular to a kind of fixture for processing automobile engine link concentric reducer hole.
Background technology
At present, in connection rod of automobile engine mechanical processing process, because engine link required precision in assembling process is high, therefore for improving the machining accuracy of engine link, relate to several manufacturing procedure, such as may just relating to roughing to engine link concentric reducer hole, right boring hole etc., even roughing must be passed through in connecting rod concentric reducer hole after cover installs sleeve, the processing of the operations such as right boring hole, visible engine link concentric reducer hole is a very important procedure, the maximum difficult point of this operation is the design of fixture, the quality of fixture has directly determined the quality of product, production efficiency and production cost.
The Chinese patent that is 201010584236.6 as the patent No. discloses a kind of automobile connecting rod fine boring jig, it is characterized in that: base is by seat and erect wallboard and form and erect wallboard bottom and have locking axis hole, top has small end of connecting rod positioning core axle axis hole and big end positioning core axle axis hole, lock shaft is positioned at locking axis hole, lock shaft rear end is by pin and the Camlock part of being locked, locking moving screw connects, locking moving screw is anterior to be connected with front movable block, front movable block one end and big end front pressuring plate one end connect by bolt, big end front pressuring plate middle part be fixed on that base is erect screw rod pin joint on wallboard and around bolt rotary, in big end front pressuring plate and base, erect and between wallboard, be provided with stage clip, compression spring sleeve is on guide pillar, guide pillar passes big end front pressuring plate and is connected with nut by pad, small end of connecting rod lower platen is bolted on the below of small end of connecting rod positioning core axle axis hole, below and connecting rod positioning support bracer that connecting rod anchor point cushion block is bolted on big end positioning core axle axis hole are connected with wolfram steel weldment by bolt, straight pin is positioned on connecting rod positioning support bracer, small end of connecting rod steel bushing is positioned at small end of connecting rod positioning core axle axis hole, small end of connecting rod top board is positioned at setting wallboard upper end and adopts hexagon socket head cap screw to fix, small end of connecting rod dog screw is screwed on small end of connecting rod top board, big end bottom supporting piece is fixed on big end positioning core axle axis hole periphery by hexagon socket head cap screw, two straight pins are symmetrically distributed in big end positioning core axle axis hole periphery, handle is connected with lock shaft and drives lock shaft to rotate.Still there is following defect in this utility model of prior art: (1) still adopts the fixed clamping of single-piece, so just need a large amount of time and manpowers to carry out clamping workpiece, greatly waste process time, increased processing cost, thereby greatly reduced operating efficiency, (2) clamping work pieces is to drive eccentric clamp system by handle piece, thereby band dynamic pressure plate part compresses workpiece, when each clamping, need to manually carry out operating grip, with clamping work pieces, cause clamping complex operation, operating efficiency is low, and come locking pressure plate to clamp workpiece by operating grip, because the power of manual operation handle has limitation, therefore inadequate to the clamping dynamics of workpiece, workpiece may exist loosening, processing difficulties in follow-up processing, increased especially mismachining tolerance, make workpiece cannot reach required precision, production efficiency is low, and be not suitable in enormous quantities, automated production, thereby greatly increased manufacturing cost, (3) this fixture is to connecting rod workpiece is positioned by wolfram steel weldment, big end bottom supporting piece, Camlock part and positioning core axle, workpiece positioning precision is low, add workpiece in man-hour location division accurate, and positioning linkage rod major part and microcephaly's centre-to-centre spacing is unadjustable when location, this fixture often can only be processed the connecting rod of single model, cannot adapt to the processing of the connecting rod of different model, versatility is poor, causes operating efficiency low.
Utility model content
The utility model is for deficiency of the prior art, a kind of fixture for processing automobile engine link concentric reducer hole is provided, can automatically carry out clamping work pieces, make to clamp effective, and positioning linkage rod major part and microcephaly's centre-to-centre spacing is adjustable, can adapt to the processing of the workpiece of different model, once can clamping and process a plurality of workpiece, thus greatly improved production efficiency.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of fixture for processing automobile engine link concentric reducer hole, comprise microcephaly's chuck body, major part chuck body, supporting seat and a plurality of clamping and positioning unit, the relative supporting seat of one of described microcephaly's chuck body and major part chuck body is movable setting; Described each clamping and positioning unit comprises major part location pumping device, the positioner of positioning workpieces and the clamping device of clamping work pieces that the microcephaly that the microcephaly's alignment pin being arranged in microcephaly's chuck body, the major part alignment pin that is arranged on major part chuck body, driving microcephaly alignment pin are pumped locates pumping device, drives major part alignment pin to pump, and described positioner and clamping device correspondence are arranged in major part chuck body.
The utility model fixture comprises a plurality of clamping and positioning unit that set in a row, can a plurality of workpiece of clamped one time, and benchmark is all unified, simple in structure, easy to operate, both improved working (machining) efficiency, guaranteed precision and the quality of workpiece simultaneously; The relative supporting seat of one of microcephaly's chuck body of place work piece connecting rod and major part chuck body is movable setting, can the centre-to-centre spacing between major part and microcephaly be regulated, thereby adapt to the processing of the workpiece that the large ting model of spacing is different, can be used for the processing of Multiple Type connecting rod, can produce in batches, versatility is good, and has greatly improved working (machining) efficiency.
Further, described clamping device comprises briquetting, corner pressing plate and for the corner oil cylinder of clamping force is provided, described corner pressing plate lower end is connected with the piston rod of corner oil cylinder by removable pin seven; Described corner pressing plate is along laterally offering the cavity three that holds briquetting one end, described corner pressing plate vertically go up be provided with successively some for the installing hole two of locking member is installed, when described briquetting is arranged in the correct position of cavity three, by the locking member being arranged in installing hole two, stop solid.
The end of the workpiece of placed adjacent clamps by a clamping device respectively, makes compact conformation, has greatly saved installing space, and clamps effective; Clamping device of the present utility model provides driving force realize the clamping of workpiece and unclamp by corner oil cylinder, need not manually realize clamping, by solenoid control, programmes to realize Automatic-clamping, has greatly improved operating efficiency, and has clamped effective.During clamping work pieces, drive the end of the relative clamping work pieces of briquetting, after workpiece completion of processing, then take described removable pin seven as axle is around described piston rod rotation 90 degree by corner hydraulic oil cylinder driving corner pressing plate, described briquetting leaves the end of workpiece, and then unclamp workpiece, can take off the workpiece of completion of processing, make work-handling convenient, so repeatedly, realize the batch machining to workpiece, greatly improved operating efficiency.And briquetting is directly clamped on the end face of workpiece, for the setting of movable property, can carry out suitable adjustment according to the model of processing work, be briquetting relatively cavity three carry out the adjusting of length direction, while adjusting to clamping work pieces desired position, the two ends of the corner pressing plate of a corresponding clamping device are all provided with briquetting, then by locking member, briquetting relative rotation pressing plate are locked, and realize the clamping to workpiece.
Further, described positioner comprises a pair of locating piece, support the positioning pedestal of described locating piece, seat and connector are located by connecting, a described upper end that is located by connecting is slidably connected with positioning pedestal, lower end is fixed in described major part chuck body, described positioning pedestal lower end is provided with guide key groove three, a described upper end that is located by connecting is provided with guide key groove two, described connector lower end is arranged in guide key groove two, described connector upper end is arranged in guide key groove two, described locating piece, positioning pedestal and the seat that is located by connecting are connected and are connected as a single entity with connector by securing member.
Further, described microcephaly locates pumping device and comprises microcephaly's telescopic cylinder, small end con rod, microcephaly's guide rod, for microcephaly's guide rod guide pin bushing and the microcephaly's telescopic cylinder seat to microcephaly's guide rod guiding, described microcephaly's telescopic cylinder seat is fixedly connected with microcephaly's chuck body, the upper end of described microcephaly's telescopic cylinder and microcephaly's telescopic cylinder seat is fixedly linked, the lower end of described microcephaly's telescopic cylinder seat is connected by removable pin three with described small end con rod centre position, described small end con rod one end is connected by removable pin one with the piston rod of microcephaly's telescopic cylinder, the other end is connected by removable pin two with microcephaly's guide rod, described microcephaly's guide rod guide pin bushing is arranged in microcephaly's chuck body, described microcephaly's alignment pin and microcephaly's guide rod removably connect.
Further, described major part location pumping device comprises major part telescopic cylinder, major part connecting rod, major part guide rod, for major part guide rod guide pin bushing and the major part telescopic cylinder seat to major part guide rod guiding, described major part telescopic cylinder seat is fixedly connected with major part chuck body, the upper end of described major part telescopic cylinder and major part telescopic cylinder seat is fixedly linked, the lower end of described major part telescopic cylinder seat is connected by removable pin six with described major part connecting rod centre position, described major part connecting rod one end is connected by removable pin four with the piston rod of major part telescopic cylinder, the other end is connected by removable pin five with major part guide rod, described major part guide rod guide pin bushing is arranged in major part chuck body, described major part alignment pin and major part guide rod removably connect.
Engine link is first nested on major part alignment pin by big end hole, microcephaly hole is nested on microcephaly's alignment pin, and regulate greatly according to the size of institute's processing work engine link centre-to-centre spacing, distance between microcephaly's alignment pin drives, and corresponding workpiece engine link is placed on a pair of locating piece of positioner, and according to the needs of workpiece model, described a pair of locating piece relative spacing can be carried out suitable adjusting, treat that connecting rod has good positioning, again by after clamping device clamping work pieces, microcephaly's alignment pin is located pumping device by microcephaly and is taken away, major part alignment pin is located pumping device by major part and is taken away, can process workpiece, by the utility model, workpiece is positioned, location is convenient, and guaranteed the accuracy of location.
Further, described each clamping and positioning unit also comprises the side bracing or strutting arrangement that engine link concentric reducer side is supported, and described side bracing or strutting arrangement comprises the side support cylinder seat of side support cylinder, the side support column being connected with the piston rod of side support cylinder and support-side support cylinder.
After clamping device clamps workpiece, by side bracing or strutting arrangement, respectively connecting rod concentric reducer is clamped again, a plurality of supplemental support oil cylinders, side support column is under side support cylinder drives, after self-locking, can firmly locate workpiece, further improve the reliability of Workpiece clamping, guaranteed accuracy and the high efficiency of processing.
Further, described each clamping and positioning unit is also included in the supplemental support post that microcephaly's chuck body is provided with.
The utility model carrys out positioning linkage rod by a pair of briquetting in big end setting, location is firm, for further improving the stability of location, in the one end apart from small end of connecting rod, in microcephaly's chuck body, be provided with supplemental support post, be used for supporting microcephaly, increase fixture rigidity, further guaranteed the reliability of positioning of workpiece connecting rod, thereby improved machining accuracy and working (machining) efficiency.
Further, described supporting seat comprises the base plate that is connected with machining tool, is arranged on base plate for supporting the gripper shoe of microcephaly's chuck body and major part chuck body; Described microcephaly's chuck body is arranged in gripper shoe along Workpiece length direction is movable, described microcephaly's chuck body is connected by T-shaped nut with described gripper shoe, described gripper shoe is provided with the guide key groove one that T-shaped nut is installed, the installing hole one penetrating for described T-shaped nut in described microcephaly's chuck body.
The utility model is by the movable setting of the relative gripper shoe of microcephaly's chuck body of carrying small end of connecting rod, the major part chuck body of major part can regulate the centre-to-centre spacing between major part and microcephaly relatively, thereby adapt to the processing of the workpiece that the large ting model of spacing is different, can be used for the processing of Multiple Type connecting rod, practicality is good, and has greatly improved working (machining) efficiency.
Further, described major part alignment pin is rhombus pin.
Further, described microcephaly's alignment pin is elasticity circular pegs, comprise that microcephaly locates plunger and microcephaly's location key seat, described microcephaly locates plunger and microcephaly's location key seat is structure as a whole, in described microcephaly's alignment pin, be provided with elastic device, described elastic device comprises that being arranged on microcephaly locates positioning ball, the decorative pearl on top of an official cap in plunger and drive the decorative pearl on top of an official cap to push the elasticity ejector pin of positioning ball, described microcephaly locates plunger and is along the circumferential direction evenly distributed with the aperture that holds positioning ball, in described microcephaly's alignment pin, be provided with cavity one, the described decorative pearl on top of an official cap is arranged in described cavity one; One end that described microcephaly's guide rod is connected with microcephaly's alignment pin is provided with the cavity two that holds elasticity ejector pin, and the described decorative pearl on top of an official cap is vertically motion in described cavity one under described elasticity ejector pin drives.
The utility model positions by a pair of alignment pin and certain locating piece, and major part alignment pin is rhombus pin, and microcephaly's alignment pin is elasticity circular pegs, is the locate mode of plane and two pits, and registration is reliable; And microcephaly's alignment pin is arranged to 3 spreading mechanisms, by locate the positioning ball along the circumferential direction arranging in plunger microcephaly, by elasticity ejector pin, promote decorative pearl on top of an official cap extruding positioning ball and complete location, can locate the lining being out of shape because being pressed into, realized accurate location.
Accompanying drawing explanation
By reference to the accompanying drawings, other features of the present utility model and advantage can become clearer from the explanation of the preferred embodiment that principle of the present utility model made an explanation below by giving an example.
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of fixture embodiment for processing automobile engine link concentric reducer hole of the utility model;
Fig. 2 is the front view of a kind of fixture embodiment for processing automobile engine link concentric reducer hole of the utility model;
Fig. 3 is the structural representation of the relative supporting seat of the utility model microcephaly chuck body;
Fig. 4 is the structural representation that the utility model clamps position device;
Fig. 5 is the structural representation of the utility model positioner;
Fig. 6 is the front view of the utility model positioner;
Fig. 7 is the structural representation that the utility model microcephaly locates pumping device;
Fig. 8 is the structural representation of the utility model microcephaly alignment pin;
Fig. 9 is the structural representation of the utility model major part location pumping device;
Figure 10 is the structural representation of the utility model side bracing or strutting arrangement.
Description of reference numerals: 100-supporting seat, 101-base plate, 102-gripper shoe, 103-guide key groove one, 104-installing hole one; 200-microcephaly chuck body, 300-major part chuck body; 1-microcephaly alignment pin, 10-catch, 11-microcephaly locates plunger, 12-microcephaly location key seat, 13-elastic device, 14-positioning ball, the 15-decorative pearl on top of an official cap, 16-elasticity ejector pin, 161-ejector pin, 162-elastic component, 17-aperture, 18-cavity one, 19-cavity two; 2-major part alignment pin, 3-microcephaly locates pumping device, 31-microcephaly telescopic cylinder, 32-small end con rod, 33-microcephaly guide rod, 34-microcephaly guide rod guide pin bushing, 35-microcephaly telescopic cylinder seat, 36-removable pin one, 37-removable pin two, 38-removable pin three; 4-major part location pumping device, 41-major part telescopic cylinder, 42-major part connecting rod, 43-major part guide rod, 44-major part guide rod guide pin bushing, 45-major part telescopic cylinder seat, 46-removable pin four, 47-removable pin five, 48-removable pin six; 5-positioner, 51-locating piece, 52-positioning pedestal, 521-guide key groove three, the 53-seat that is located by connecting, 531-guide key groove two, 54-connector, 55-securing member; 6-clamping device, 61-briquetting, 62-corner pressing plate, 621-cavity three, 622-installing hole two, 63-corner oil cylinder, support column 64; 7-side bracing or strutting arrangement, 71-side support cylinder, 72-side support column, 73-side support cylinder seat; 8-supplemental support post.
The specific embodiment
As shown in Figure 1-2, a kind of fixture for processing automobile engine link concentric reducer hole, comprise microcephaly's chuck body 200, major part chuck body 300, supporting seat 100 and a plurality of clamping and positioning unit, the relative supporting seat 100 of one of described microcephaly's chuck body 200 and major part chuck body 300 is movable setting, described each clamping and positioning unit comprises the microcephaly's alignment pin 1 being arranged in microcephaly's chuck body 200, be arranged on the major part alignment pin 2 of major part chuck body 300, the microcephaly who drives microcephaly's alignment pin 1 to pump locates pumping device 3, the major part location pumping device 4 that drives major part alignment pin 2 to pump, the positioner 5 of positioning workpieces and the clamping device 6 of clamping work pieces, described positioner 5 and clamping device 6 correspondences are arranged in major part chuck body 300, in embodiment of the present utility model, described microcephaly locates pumping device 3, major part location pumping device 4 and clamping device 6 are by hydraulic oil cylinder driving clamping work pieces, the oil duct of described oil cylinder is arranged on microcephaly's chuck body 200, on major part chuck body 300 and supporting seat 100, not fragile oil duct in workman's operating process, because oil pipe easily breaks, catch fire etc., safe ready is installed in transportation, and compact conformation.
In the utility model embodiment, as shown in Figure 3, described supporting seat 100 comprises the base plate 101 that is connected with machining tool, is arranged on base plate 101 for supporting the gripper shoe 102 of microcephaly's chuck body 200 and major part chuck body 300, in embodiment of the present utility model, preferred described microcephaly's chuck body 200 is arranged in gripper shoe 102 along Workpiece length direction is movable, described microcephaly's chuck body 200 is connected by T-shaped nut with described gripper shoe 102, described gripper shoe 102 is provided with the guide key groove 1 that T-shaped nut is installed, the installing hole 1 penetrating for described T-shaped nut in described microcephaly's chuck body 200, according to the size of workpiece connecting rod concentric reducer pitch of holes, adjust the relative position of microcephaly's chuck body 200 relative major part chuck body 300, while adjusting to desired position, by T-shaped nut, microcephaly's chuck body 200 is locked in the guide key groove 1 in gripper shoe 102, guarantee that microcephaly's chuck body 200 relative gripper shoes 102 are fixedly connected with, can certainly be that major part chuck body 300 is arranged in gripper shoe 102 along Workpiece length direction is movable.
As illustrated in Figures 5 and 6, described positioner 5 comprises a pair of locating piece 51, support the positioning pedestal 52 of described locating piece 51, seat 53 and connector 54 are located by connecting, described seat 53 upper ends that are located by connecting are slidably connected with positioning pedestal 52, lower end is fixed in described major part chuck body 300, described positioning pedestal 52 lower ends are provided with guide key groove 3 521, described seat 53 upper ends that are located by connecting are provided with guide key groove 2 531, described connector 54 lower ends are arranged in guide key groove 2 531, described connector 54 upper ends are arranged in guide key groove 2 531, described locating piece 51, positioning pedestal 52 and the seat 53 that is located by connecting are connected and are connected as a single entity with connector 54 by securing member 55, in the present embodiment, preferably connector 54 is T-shaped nut, preferred fastener 55 is hexagon socket head cap screw, the lower end that is T-shaped nut is arranged in guide key groove 2 531, upper end lies along in guide key groove 3 521, by hexagon socket head cap screw, pass locating piece 51, positioning pedestal 52, seat 53 is located by connecting, hexagon socket head cap screw lower end is connected with T-shaped nut, when needs are adjusted a pair of locating piece 51 relative spacing, by unclamping hexagon socket head cap screw, hexagon socket head cap screw separates with T-shaped nut, locating piece 51, positioning pedestal 52 can move by relative positioning Connection Block 53 together with hexagon socket head cap screw and T-shaped nut, while moving to suitable position, by tightening hexagon socket head cap screw, locating piece is fixed.
Workpiece is placed on a pair of locating piece 51, according to the model of workpiece, adjust the spacing between a pair of locating piece 51, when a pair of locating piece 51 is adjusted to suitable position, by tightening hexagon socket head cap screw, locating piece is fixed, the locating piece 51 of described a pair of positioning workpieces can regulate relatively, according to the needs of processing work connecting rod, regulate, versatility is good, applicable to the multiple processing with analog structure connecting rod, save widely fixture research and development time and cost of manufacture, and greatly improved operating efficiency.
Positioner 5 of the present utility model is arranged on one end of big end, for improving the rigidity of fixture, therefore the supplemental support post 8 being provided with in microcephaly's chuck body 200, be used for supporting microcephaly, increase the rigidity of fixture, further guarantee the reliability of positioning of workpiece connecting rod, thereby improved machining accuracy and working (machining) efficiency.
In embodiment of the present utility model, for improving the accuracy to workpiece connecting rod location, therefore described major part alignment pin 2 is made as to rhombus pin, described microcephaly's alignment pin 1 is made as circular pegs, and the locate mode of " plane and two pits ", has improved the stability of workpiece location, preferably, as shown in Figure 8, described microcephaly's alignment pin 1 is elasticity circular pegs, comprise that microcephaly locates plunger 11 and microcephaly's location key seat 12, described microcephaly locates plunger 11 and microcephaly's location key seat 12 is structure as a whole, in described microcephaly's alignment pin 1, be provided with elastic device 13, described elastic device 13 comprises that being arranged on microcephaly locates the positioning ball 14 in plunger 11, the decorative pearl on top of an official cap 15 and the elasticity ejector pin 16 that drives the decorative pearl on top of an official cap 15 extruding positioning balls 14, described microcephaly locates plunger 11 and is along the circumferential direction evenly distributed with the aperture 17 that holds positioning ball 14, in described microcephaly's alignment pin 1, be provided with cavity 1, the described decorative pearl on top of an official cap 15 is arranged in described cavity 1, one end that described microcephaly's guide rod 33 is connected with microcephaly's alignment pin 1 is provided with the cavity 2 19 that holds elasticity ejector pin 16, the vertically motion in described cavity 1 under described elasticity ejector pin 16 drives of the described decorative pearl on top of an official cap 15.Described elasticity ejector pin 16 comprises ejector pin 161 and elastic component 162, in the present embodiment, described elastic component 162 is spring, described microcephaly's alignment pin 1 is provided with catch 10 with microcephaly's guide rod 33 connections, when ejector pin 161 lower ends move upward under driving effect, spring is compacted, ejector pin 161 continues rising and promotes the decorative pearl on top of an official cap 15, the decorative pearl on top of an official cap 15 extruding positioning balls 14, by positioning ball 14, outwards move with complete positioning workpieces, after location is complete, in the time of need to extracting microcephaly's alignment pin 1 out, spring resetted ejector pin 161 before this, and then microcephaly, locate pumping device 3 and extract microcephaly's alignment pin 1 out.
Adopt fixture of the present utility model to carry out roughing, right boring hole etc. to engine link concentric reducer hole, even the processing of the operations such as roughing, right boring hole must be passed through in connecting rod concentric reducer hole after cover installs lining, therefore microcephaly's alignment pin is arranged to 3 spreading mechanisms, by locate the positioning ball 13 along the circumferential direction arranging in plunger 11 microcephaly, by elasticity ejector pin 15, promote the decorative pearl on top of an official cap 14 extruding positioning balls 13 and complete location, can locate the lining being out of shape because being pressed into connecting rod concentric reducer hole, thereby realize the accurate location of workpiece connecting rod.
In the present embodiment, as shown in Figure 7, described microcephaly locates pumping device 3 and comprises microcephaly's telescopic cylinder 31, small end con rod 32, microcephaly's guide rod 33, for microcephaly's guide rod guide pin bushing 34 and the microcephaly's telescopic cylinder seat 35 to microcephaly's guide rod 33 guiding, described microcephaly's telescopic cylinder seat 35 is fixedly connected with microcephaly's chuck body 200, described microcephaly's telescopic cylinder 31 is fixedly linked with the upper end of microcephaly's telescopic cylinder seat 35, the lower end of described microcephaly's telescopic cylinder seat 35 is connected by removable pin 3 38 with described small end con rod 32 centre positions, described small end con rod 32 one end are connected by removable pin 1 with the piston rod of microcephaly's telescopic cylinder 31, the other end is connected by removable pin 2 37 with microcephaly's guide rod 33, described microcephaly's guide rod guide pin bushing 34 is arranged in microcephaly's chuck body 200, described microcephaly's alignment pin 1 removably connects with microcephaly's guide rod 33.
In the present embodiment, as shown in Figure 9, described major part location pumping device 4 comprises major part telescopic cylinder 41, major part connecting rod 42, major part guide rod 43, for major part guide rod guide pin bushing 44 and the major part telescopic cylinder seat 45 to major part guide rod 43 guiding, described major part telescopic cylinder seat 45 is fixedly connected with major part chuck body 300, the upper end of described major part telescopic cylinder 41 and major part telescopic cylinder seat 45 is fixedly linked, the lower end of described major part telescopic cylinder seat 45 is connected by removable pin 6 48 with described major part connecting rod 42 centre positions, described major part connecting rod 42 one end are connected by removable pin 4 46 with the piston rod of major part telescopic cylinder 41, the other end is connected by removable pin 5 47 with major part guide rod 43, described major part guide rod guide pin bushing 44 is arranged in major part chuck body 300, described major part alignment pin 2 removably connects with major part guide rod 43.
In the present embodiment, as shown in Figure 4, described clamping device 6 comprises briquetting 61, corner pressing plate 62 and for the corner oil cylinder 63 of clamping force is provided, described corner pressing plate 62 lower ends are connected with the piston rod of corner oil cylinder 63 by removable pin seven; Described corner pressing plate 62 is along being laterally provided with the cavity 3 621 that holds briquetting 61 one end, described corner pressing plate 62 vertically go up be provided with successively some for the installing hole 2 622 of locking member is installed, when described briquetting 61 is arranged in the correct position of cavity 3 621, by the locking member being arranged in installing hole 2 622, stop solid.
The two ends of the corner pressing plate 62 of a corresponding clamping device 6 are all provided with briquetting 61, therefore the end of the workpiece of placed adjacent clamps by a clamping device 6 respectively, make compact conformation, greatly saved installing space, and clamp effective, the corner oil cylinder 63 adopting in the fixture of the present embodiment can be clamped at two ends, can clamp two workpiece simultaneously, while meeting workpiece requirement, reduce again oil cylinder quantity, as 5 workpiece, other oil cylinders want 5 * 2=10 only, this model as long as 6.And to being positioned at the workpiece connecting rod of outermost both sides, only need a briquetting 61 be installed in one end of corner pressing plate 62, the other end supports by the support column 64 being also provided with in described major part chuck body 300, balance is to the balance of workpiece and clamping force, clamping work pieces better, and because the model of the workpiece engine link of each processing is different, corresponding dagger 64 upper ends can replace the underbed of pad to coordinate the processing of the engine link of different size and model as nut or other by increasing or reduce pad.
In the present embodiment, briquetting 61 is directly clamped on the end face of workpiece, briquetting 61 is the setting of movable property, can carry out suitable adjustment according to the model of processing work, be that relative cavity 3 621 carries out the adjusting of length direction, while adjusting to clamping work pieces desired position, then by locking member, briquetting 61 relative rotation pressing plates 62 are locked, realize the clamping to workpiece.
Briquetting 61 provides driving force realize the clamping of workpiece and unclamp by corner oil cylinder 63, need not manually realize clamping, by solenoid control, programme to realize Automatic-clamping, greatly improve operating efficiency, and clamp effectively, with processing work more preferably, prepare.During clamping work pieces, drive the end of briquetting 61 relative clamping work pieces, after workpiece completion of processing, the piston rod of corner oil cylinder 63 H1 that first rises, in the rotation of limit rising edge, H2 rises, 90-degree rotation, described briquetting 61 leaves the end of workpiece, and then unclamps workpiece, can take off the workpiece of completion of processing, make work-handling convenient, so repeatedly, realize the batch machining to workpiece, greatly improved operating efficiency.
In the present embodiment, as shown in figure 10, described each clamping and positioning unit also comprises the side bracing or strutting arrangement 7 that engine link concentric reducer side is supported, and described side bracing or strutting arrangement 7 comprises the side support cylinder seat 73 of side support cylinder 71, the side support column 72 being connected with the piston rod of side support cylinder 71 and support-side support cylinder 71.
Operation principle of the present utility model is as follows: fixture of the present utility model is connected with machining tool by base plate 101, in each clamping unit, and the big end hole of workpiece connecting rod to be processed is nested on major part alignment pin 2, according to the size of institute's processing work concentric reducer pitch of holes, regulate the distance of microcephaly's alignment pin 1 relative major part alignment pin 2, to guarantee that connecting rod concentric reducer is accurately nested in greatly, on microcephaly's alignment pin, and workpiece connecting rod lower surface is held in place on a pair of locating piece 51 and supplemental support post 8 in major part chuck body 300, after treating that workpiece connecting rod is had good positioning, corner oil cylinder 63 by described clamping device 6 provides clamping force to drive briquetting 61 clamping work pieces connecting rod tops, and also by being positioned at the side bracing or strutting arrangement 7 of engine link concentric reducer side, the side support column 72 that side support cylinder 71 drives clamps and support link concentric reducer side, after treating workpiece connecting rod location and clamping well, drive microcephaly to locate pumping device 3 extracts microcephaly's alignment pin 1 out from connecting rod small end hole, drive major part location pumping device 4 that major part alignment pin 2 is extracted out from crank pin end pore, can operate machining tool side workpiece connecting rod is processed to work, can carry out roughing and right boring hole to connecting rod concentric reducer hole, the connecting rod concentric reducer that also can install to overlapping lining carries out roughing and right boring hole.After treating workpiece Machining of Connecting Rod, by corner oil cylinder 63, drive corner pressing plate 62 to take described removable pin seven as axle is around described piston rod rotation 90 degree again, described briquetting 61 leaves the end of workpiece, and then unclamp workpiece, can take off the workpiece of completion of processing, make work-handling convenient, so repeatedly, realize the batch machining to workpiece, greatly improved operating efficiency.
Place, description end: finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.

Claims (10)

1. the fixture for processing automobile engine link concentric reducer hole, it is characterized in that: comprise microcephaly's chuck body (200), major part chuck body (300), supporting seat (100) and a plurality of clamping and positioning unit, the relative supporting seat of one (100) of described microcephaly's chuck body (200) and major part chuck body (300) is movable setting; Described each clamping and positioning unit comprises major part location pumping device (4), the positioner (5) of positioning workpieces and the clamping device (6) of clamping work pieces that the microcephaly that the microcephaly's alignment pin (1) being arranged in microcephaly's chuck body (200), the major part alignment pin (2) that is arranged on major part chuck body (300), driving microcephaly's alignment pin (1) are pumped locates pumping device (3), drives major part alignment pin (2) to pump, and described positioner (5) and clamping device (6) correspondence are arranged in major part chuck body (300).
2. the fixture for processing automobile engine link concentric reducer hole according to claim 1, it is characterized in that: described clamping device (6) comprises briquetting (61), corner pressing plate (62) and for the corner oil cylinder (63) of clamping force is provided, described corner pressing plate (62) lower end is connected with the piston rod of corner oil cylinder (63) by removable pin seven; Described corner pressing plate (62) is along being laterally provided with the cavity three (621) that holds briquetting (61) one end, described corner pressing plate (62) vertically go up be provided with successively some for the installing hole two (622) of locking member is installed, when described briquetting (61) is arranged in the correct position of cavity three (621), by the locking member being arranged in installing hole two (622), stop solid.
3. the fixture for processing automobile engine link concentric reducer hole according to claim 2, it is characterized in that: described positioner (5) comprises a pair of locating piece (51), support the positioning pedestal (52) of described locating piece (51), seat (53) and connector (54) are located by connecting, described seat (53) upper end that is located by connecting is slidably connected with positioning pedestal (52), lower end is fixed in described major part chuck body (300), described positioning pedestal (52) lower end is provided with guide key groove three (521), described seat (53) upper end that is located by connecting is provided with guide key groove two (531), described connector (54) lower end is arranged in guide key groove two (531), described connector (54) upper end is arranged in guide key groove two (531), described locating piece (51), positioning pedestal (52) and the seat (53) that is located by connecting are connected and are connected as a single entity with connector (54) by securing member (55).
4. according to the fixture for processing automobile engine link concentric reducer hole described in claim 1-3 any one, it is characterized in that: described microcephaly locates pumping device (3) and comprises microcephaly's telescopic cylinder (31), small end con rod (32), microcephaly's guide rod (33), for microcephaly's guide rod guide pin bushing (34) and the microcephaly's telescopic cylinder seat (35) to microcephaly's guide rod (33) guiding, described microcephaly's telescopic cylinder seat (35) is fixedly connected with microcephaly's chuck body (200), described microcephaly's telescopic cylinder (31) is fixedly linked with the upper end of microcephaly's telescopic cylinder seat (35), the lower end of described microcephaly's telescopic cylinder seat (35) is connected by removable pin three (38) with described small end con rod (32) centre position, described small end con rod (32) one end is connected by removable pin one (36) with the piston rod of microcephaly's telescopic cylinder (31), the other end is connected by removable pin two (37) with microcephaly's guide rod (33), described microcephaly's guide rod guide pin bushing (34) is arranged in microcephaly's chuck body (200), described microcephaly's alignment pin (1) removably connects with microcephaly's guide rod (33).
5. the fixture for processing automobile engine link concentric reducer hole according to claim 4, it is characterized in that: described major part location pumping device (4) comprises major part telescopic cylinder (41), major part connecting rod (42), major part guide rod (43), for major part guide rod guide pin bushing (44) and the major part telescopic cylinder seat (45) to major part guide rod (43) guiding, described major part telescopic cylinder seat (45) is fixedly connected with major part chuck body (300), described major part telescopic cylinder (41) is fixedly linked with the upper end of major part telescopic cylinder seat (45), the lower end of described major part telescopic cylinder seat (45) is connected by removable pin six (48) with described major part connecting rod (42) centre position, described major part connecting rod (42) one end is connected by removable pin four (46) with the piston rod of major part telescopic cylinder (41), the other end is connected by removable pin five (47) with major part guide rod (43), described major part guide rod guide pin bushing (44) is arranged in major part chuck body (300), described major part alignment pin (2) removably connects with major part guide rod (43).
6. the fixture for processing automobile engine link concentric reducer hole according to claim 5, it is characterized in that: described each clamping and positioning unit also comprises the side bracing or strutting arrangement (7) that engine link concentric reducer side is supported, and described side bracing or strutting arrangement (7) comprises side support cylinder (71), the side support column (72) being connected with the piston rod of side support cylinder (71) and the side support cylinder seat (73) of support-side support cylinder (71).
7. the fixture for processing automobile engine link concentric reducer hole according to claim 6, is characterized in that: described each clamping and positioning unit is also included in the supplemental support post (8) that microcephaly's chuck body (200) is provided with.
8. the fixture for processing automobile engine link concentric reducer hole according to claim 7, is characterized in that: described supporting seat (100) comprises the base plate (101) that is connected with machining tool, it is upper for supporting the gripper shoe (102) of microcephaly's chuck body (200) and major part chuck body (300) to be arranged on base plate (101); Described microcephaly's chuck body (200) is arranged in gripper shoe (102) along Workpiece length direction is movable, described microcephaly's chuck body (200) is connected by T-shaped nut with described gripper shoe (102), described gripper shoe (102) is provided with the guide key groove one (103) that T-shaped nut is installed, the upper installing hole one (104) penetrating for described T-shaped nut of described microcephaly's chuck body (200).
9. the fixture for processing automobile engine link concentric reducer hole according to claim 8, is characterized in that: described major part alignment pin (2) is rhombus pin.
10. the fixture for processing automobile engine link concentric reducer hole according to claim 9, it is characterized in that: described microcephaly's alignment pin (1) is elasticity circular pegs, comprise that microcephaly locates plunger (11) and microcephaly's location key seat (12), described microcephaly locates plunger (11) and microcephaly's location key seat (12) is structure as a whole, in described microcephaly's alignment pin (1), be provided with elastic device (13), described elastic device (13) comprises that being arranged on microcephaly locates the positioning ball (14) in plunger (11), the decorative pearl on top of an official cap (15) and the elasticity ejector pin (16) that drives the decorative pearl on top of an official cap (15) extruding positioning ball (14), described microcephaly locates plunger (11) and is along the circumferential direction evenly distributed with the aperture (17) that holds positioning ball (14), in described microcephaly's alignment pin (1), be provided with cavity one (18), the described decorative pearl on top of an official cap (15) is arranged in described cavity one (18), one end that described microcephaly's guide rod (33) is connected with microcephaly's alignment pin (1) is provided with the cavity two (19) that holds elasticity ejector pin (16), and the described decorative pearl on top of an official cap (15) is vertically motion in described cavity one (18) under described elasticity ejector pin (16) drives.
CN201420092720.0U 2014-03-03 2014-03-03 Fixture for machining large-head and small-head holes of connecting rods of engines of automobiles Active CN203726223U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103831650A (en) * 2014-03-03 2014-06-04 杭州钰友精密机械有限公司 Fixture for machining holes in large and small ends of automotive engine connecting rod
CN104493576A (en) * 2014-10-24 2015-04-08 上海奥林汽车安全系统有限公司 Fixture used for drilling and tapping of hinge shape steel
CN107433473A (en) * 2017-07-06 2017-12-05 南宫市精强连杆有限公司 Connecting rod process for machining method and detent mechanism used
CN112589497A (en) * 2020-12-15 2021-04-02 商井芳 Numerical control machine tool fixture capable of rapidly clamping and fixing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103831650A (en) * 2014-03-03 2014-06-04 杭州钰友精密机械有限公司 Fixture for machining holes in large and small ends of automotive engine connecting rod
CN103831650B (en) * 2014-03-03 2017-02-08 杭州钰友精密机械有限公司 Fixture for machining holes in large and small ends of automotive engine connecting rod
CN104493576A (en) * 2014-10-24 2015-04-08 上海奥林汽车安全系统有限公司 Fixture used for drilling and tapping of hinge shape steel
CN104493576B (en) * 2014-10-24 2017-05-10 上海奥林汽车安全系统有限公司 Fixture used for drilling and tapping of hinge shape steel
CN107433473A (en) * 2017-07-06 2017-12-05 南宫市精强连杆有限公司 Connecting rod process for machining method and detent mechanism used
CN112589497A (en) * 2020-12-15 2021-04-02 商井芳 Numerical control machine tool fixture capable of rapidly clamping and fixing

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