Combined exhaust air gas manifold inlet end face of flange processing positioning method and positioning fixture
Technical field
The invention belongs to enmgine exhaust processing technique field, more particularly to a kind of Combined exhaust air gas manifold inlet method
Blue end face processing positioning method and positioning fixture.
Background technology
In order to facilitate general assembly, enmgine exhaust generally uses fabricated structure, i.e., docks group by air flue by being segmented
It closes.This exhaust manifold production process also be typically segmental machining finished product after, group is carried out when being assembled with engine cylinder body again
Close installation.Therefore, it is necessary to keep each section of air flue consistent with the relative position of inlet flange end face, it can ensure the suitable of engine exhaust
Freely.Currently, the processing of exhaust manifold inlet flange end face, mostly uses both ends lower support to position, this positioning and clamping is convenient
Fast, positioning fixture structure is simple, and cost of manufacture is cheap.But due to the inevitable real estate of exhaust manifold rough-cast process
Have error, in addition slab cooling deformation etc. factors, gas port position outer circle away from air flue center apart from size deviation, so with
Outer surface support positioning often brings air flue center and the size of inlet flange end face to differ.In this way, when exhaust manifold with
After engine cylinder body assembling, the deviation at two sections of exhaust manifold air passage centers is necessarily brought, and thus influences exhaust manifold exhaust
It is smooth, and then the performance of engine total quality and engine is influenced, this is also long-standing problem exhaust manifold manufacturer
An important factor for.
Invention content
Technical problem to be solved by the invention is to provide a kind of processing of Combined exhaust air gas manifold inlet end face of flange to position
Method and positioning fixture can reliably ensure the processing of exhaust manifold efficiently against drawbacks described above of the existing technology
Quality.
Realize that above-mentioned purpose is adopted the technical scheme that:A kind of Combined exhaust air gas manifold inlet end face of flange processing positioning
Method, including origin reference location and Auxiliary support positioning, the origin reference location is to combine connecting hole as positioning datum.
The Auxiliary support positioning includes Y-axis support positioning and Z axis support positioning, and the Y-axis support positioning is with air inlet method
Blue side is positioning datum, and Z axis support positioning is using inlet flange bottom side end face as positioning datum.
A kind of positioning fixture for said combination formula exhaust manifold inlet flange end face processing positioning method, including fixture
Body, combination connecting hole positioning fixture, side supports positioning fixture and end support positioning fixture, combination connecting hole positioning fixture position
In the front end position of clamp body, end support positioning fixture is located at the tail end position of clamp body, the installation of side supports positioning fixture
In a side of clamp body table top, other side position is correspondingly provided with side hold-down mechanism, the fixture with side positioning fixture
Workpiece hold-down mechanism is set on body;Side supports positioning fixture includes the locating piece of liftable and translation and liftable support
Block;Side hold-down mechanism includes liftable and the pressure head of translation;End support positioning fixture includes the compression of liftable and translation
Supporting block;Combine connecting hole positioning fixture, side supports positioning fixture, end support positioning fixture, side hold-down mechanism and work
The supporting mechanism being connect with mould body and the driving mechanism for lifting and/or translating is respectively set in part hold-down mechanism.
The driving mechanism uses servo motor or corner fluid cylinder.
The combination connecting hole positioning fixture uses swollen heart type structure, has the locating clip being fixedly connected with the bearing
Specifically, 2 fixed jacking blocks and a movable jacking block is particularly arranged in locating clip, and setting front end is pushing away for wedge shape in positioning fixture body
Bar, the guiding that movable jacking block is bolted wedge block and is slidably connected with the support connecting plate being arranged in positioning fixture body
Bolt installs compressed spring on guide blot, and wedge block passes through sliding block and sliding slot and coordinates with push rod, and putting back-end connects driving machine
Structure.
The side supports positioning fixture includes pedestal and the side supports locating piece being attached thereto and bottom support positioning
Block, the height of side supports locating piece and horizontal position can be adjusted, and bottom supports locating piece can be with lift adjustment, pedestal and institute
State clamp body installation connection.
The end support positioning fixture includes fixed seat and end support locating piece, the height of end support locating piece and
Horizontal position can be adjusted, and step is arranged in the front end of end support locating piece, and fixed seat is connected with clamp body installation.
The side hold-down mechanism includes supporting frame and briquetting, and the height of briquetting can be adjusted, and horizontal impaction state can
With adjusting control, supporting frame is connected with clamp body installation.
The side supports positioning fixture and side hold-down mechanism are disposed as multiple.
The driving mechanism has been connected separately controller.
The main advantages of the present invention be:
1)The processing positioning method of the present invention is to combine connecting hole as origin reference location, it is ensured that two sections of exhaust manifold main shafts
Line assembles precision, then is aided with side and the bottom side end face of inlet flange for the support positioning of Y-axis and Z axis, is conducive to
Inlet flange feature dimension and each inlet flange can ensure inlet flange end face and group well with respect to the guarantee of machining accuracy
Opposite morpheme size precision between connecting hole is closed, after two sections of exhaust manifolds combination connections, each inlet flange end face can be with
Engine cylinder body connecting end surface is closely bonded, and then ensures the overall package quality of engine exhaust system.
2)Each portion's driving mechanism uses corner fluid cylinder in the positioning clamp for machining of the present invention, and is connect with controller signals,
It is opened and closed by each corner fluid cylinder and delay procedure controls, can accurately adjust the cooperation of each portion's positioning support and compression action
And advance and retreat position, ensure the processing quality of exhaust manifold inlet flange end face.
3)The positioning clamp for machining of the present invention is automatically controlled by controller so that processing Job Operations are simple and efficient, energy
The enough labor intensity for effectively mitigating operating personnel, increases substantially production efficiency, especially suitable for industrialization large-scale production.
Description of the drawings
Following further describes the present invention with reference to the drawings:
Fig. 1 is the structural schematic diagram of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural schematic diagram that connecting hole positioning fixture is combined in Fig. 1;
Fig. 4 is the structural schematic diagram of side supports positioning fixture in Fig. 1;
Fig. 5 is the structural schematic diagram of end support positioning fixture in Fig. 1;
Fig. 6 is the structural schematic diagram of side hold-down mechanism in Fig. 1;
Fig. 7 is the structural schematic diagram of workpiece hold-down mechanism in Fig. 1.
Specific implementation mode
Embodiment one
As shown in Fig. 1,2,3,4,5,6,7, Combined exhaust air manifold of the present invention system is existing by two sections of exhaust discriminations
Pipe 7 by combine connecting hole 7-1 be mutually butted, for realize dock after two sections of exhaust manifolds 7 inlet flange 7-2,7-3 with
The smooth connection of engine cylinder body, and ensure that engine exhaust is smooth, Combined exhaust air gas manifold inlet end face of flange of the invention
Processing positioning method first respectively connects the combination of two sections of exhaust manifolds 7 using the end face of strand inlet flange 7-2,7-3 as roughing standard
It meets hole 7-1 to be processed, then reprocesses the connecting end surface of each inlet flange 7-2,7-3.The localization method includes origin reference location
It is positioned with Auxiliary support, the origin reference location is to combine connecting hole 7-1 as positioning datum.The Auxiliary support positioning includes Y-axis
Support positioning and Z axis support positioning, the Y-axis support positioning is using the sides inlet flange 7-2,7-3 as positioning datum, Z axis support
Positioning is using the bottom side end face of inlet flange 7-2,7-3 as positioning datum.This method can be protected using combining connecting hole 7-1 as positioning datum
Two sections of 7 main shafts of exhaust manifold of card assemble precision, then are aided with the side of inlet flange 7-2,7-3 and bottom side end face is
The positioning datum of Y-axis and Z axis is conducive to inlet flange 7-2,7-3 feature dimension and each inlet flange 7-2,7-3 with respect to machining accuracy
Guarantee.
For the positioning fixture of said combination formula exhaust manifold inlet flange end face processing positioning method, including clamp body 1,
Combine connecting hole positioning fixture 2, side supports positioning fixture 4 and end support positioning fixture 6, combination connecting hole positioning fixture 2
Positioned at the front end position of clamp body 1, side supports positioning fixture 4 is mounted on a side of 1 table top of clamp body, other side position
It is correspondingly provided with side hold-down mechanism 3 with side positioning fixture 4, end support positioning fixture 6 is located at the rear end position of clamp body 1,
Workpiece hold-down mechanism is additionally provided on the clamp body 1.
2 locating clip specific 202 with supporting mechanism and connection fixed thereto of combination connecting hole positioning fixture, wherein
Bearing 201 can be used in supporting mechanism, and the excircle position of locating clip specific 202 is equipped with 2 fixed jacking blocks 203 and one can be with diameter
To the movable jacking block 209 of sliding, the push rod 211 that axially movable front end is wedge shape, push rod are equipped in locating clip specific 202
211 rear ends pass through the through-hole of the setting of bearing 201 and are connected with the first driving mechanism 212, which can be used liquid
Cylinder.Movable jacking block 209 by bolt 208 be connected with wedge block 204 and with locating clip specific 201 in be arranged support connecting plate
210 guide blots 207 being slidably connected are coated with compressed spring 206 on guide blot 207, and push rod 211 passes through T-shaped slider
211-1 and the T shape sliding slots at 204 top of wedge block are slidably connected(Certainly T-shaped slider, push rod 211 are set on 204 top of wedge block
Tapered end setting T shapes sliding slot can play same connection sliding effect).Push rod 211 realizes axis under the driving of fluid cylinder 212
To movement, and 204 radial expansion of wedge block is driven, to exhaust manifold 7 under the action of fixed jacking block 203 and movable jacking block 209
Combination connecting hole 7-1 implement to clamp and positioning.It can make push rod 211 and wedge block 204 under the action of compressed spring 206 always
In tight engagement.
The side supports for the supporting mechanism and liftable and translation that side supports positioning fixture 4 is connect with clamp body 1 position
Block 405 and liftable bottom support locating piece 406, and there are one the pedestals 401 being fixedly connected with clamp body 1 for supporting mechanism tool.
Frame or case structure can be used in pedestal 401, and top is provided with lifting frame body 402, and lifting 402 bottom of frame body is present with installation
Servo motor can be used in the second driving mechanism 410 connection in body 401, the second driving mechanism 410, and the main shaft of servo motor can lead to
Cross leading screw, nut connect with the bottom plate of lifting frame body 402, the top of leading screw can be flexibly connected with lifting frame body 402, electric in servo
The height that side supports locating piece can be adjusted under the action of machine makes it be slightly below adding for exhaust manifold inlet flange 7-2,7-3
Work end face, not only can guarantee the side positioning of inlet flange 7-2,7-3, but also can avoid the interference with process tool.Lift frame body 402
Bottom is coated with the guide post 403 being fixedly connected with the top plate of pedestal 401, the in-plane displancement for preventing lifting frame body 402.It rises
Side is equipped with third driving mechanism 404 in drop frame body 402, and side supports locating piece 405 is defeated with the third driving mechanism 404
Outlet connects, and the lateral position of side supports locating piece 405 is adjusted with this, ensures the Y-axis of exhaust manifold inlet flange 7-2,7-3
Positioning.Servo motor can also be used in third driving mechanism 404, is connected with locating piece in a manner of identical with the second driving mechanism 410
It connects.It is additionally provided with liftable bottom at the top of pedestal 401 and supports locating piece 406, is used to support and positions inlet flange 7-
2, the bottom face of 7-3, bottom support locating piece 406 are connect with the 4th driving mechanism 408 being fixedly mounted in pedestal 401,
Servo motor can also be used in 4th driving mechanism 408, supports the connection type of locating piece 406 can be with the second driving machine with bottom
Structure 410 is identical.
The end support positioning fixture 6 includes that the supporting mechanism and end support being arranged at 1 rear end position of clamp body are determined
Position block 604, wherein supporting mechanism have the fixed seat 601 being mounted on clamp body 1 and are seated in the holder at 601 top of fixed seat
603, the output end of 603 bottom of holder and the 5th driving mechanism 602 in fixed seat 601 realizes holder 603 with this
Lift adjustment.The guide rod 606 that the 6th driving mechanism 605 is respectively set in holder 603 and is fixedly connected with fixed seat 601, tail
End support locating piece 604 is connected to the output end of the 6th driving mechanism 605, and tail is realized under the driving of the 6th driving mechanism 605
End support locating piece 604 moves horizontally, and implements to compress to exhaust manifold 7 to be processed.Five, the 6th driving mechanisms 602,605
Servo motor can be used, output connection type is identical as the second driving mechanism 410.The front end of end support locating piece 604
Step is set, support positioning and the tail end connecting flange 7-3Y axis directions of tail end connecting flange 7-3 bottom faces can be implemented simultaneously
It compresses.
The side hold-down mechanism 3 includes supporting frame 301, lifting support 303 and briquetting 305, and lifting support 303 passes through
7th driving mechanism 307 is arranged at the top of supporting frame 301, in lifting support 303 the 8th driving mechanism 304 of setting and with branch
The guide part 302 that support body 301 is fixedly connected, briquetting 305 are connected to the output end of the 8th driving mechanism 304, are achieved in pressure
The adjusting of 305 height of block and the side of inlet flange 7-2,7-3 is compressed.Cover for seat is set between briquetting 305 and lifting support 303
306, for avoiding the interference to process tool.
Compression of the workpiece hold-down mechanism 5 for the Z-direction of inlet flange 7, has the base as supporting mechanism
Seat 501, the top setting connecting seat 502 and hinged-support 506 of pedestal 501, the 9th driving mechanism 503 of interior setting of connecting seat 502, the
The output end of nine driving mechanisms 503 is hinged with lever casting die 504, and hinged-support 506 is hinged by carrier bar 505 and casting die 504, the
Extending cylinder can be used in nine driving mechanisms 503.When extending cylinder extending action, it can be achieved that casting die 504 is to 7 top of exhaust manifold
Compression.
The Combined exhaust air gas manifold inlet end face of flange positioning clamp for machining can be arranged controller 8, and respectively with first,
Two, three, four, five, six, seven, eight, nine driving mechanisms, 212,410,414,408,602,605,307,304,503 signal connects, with
This realizes the automatic positioning clamping of positioning fixture.
The Combined exhaust air gas manifold inlet end face of flange positioning clamp for machining of the present invention is in use, can first pass through to be added in batches
First, second, third and fourth, five, six, seven, eight, nine driving mechanism 212 of work exhaust manifold sampling test setting, 410,414,408,
602,605,307,304,503 opening and closing time parameter establishment controls program and imports controller.It can be by following operation sequence
Carry out the Milling Process of exhaust manifold inlet flange to be processed end face:First by first, second, third and fourth, five, six, seven, eight driving machines
212,410,414,408,602,605,307,304,503 adjustment and recovery of structure takes exhaust manifold 7 to be processed to be placed in original state
Processing stations, and a combination thereof connecting hole 7-1 is made to cover to 209 position appropriate of fixed 203 movable jacking block of jacking block, it is opened by controller
The first driving mechanism 212 is opened, connecting hole 7-1 clampings will be combined, complete the positioning of combination connecting hole 7-1;Then it is respectively started
Two driving mechanisms 410, third driving mechanism 414 adjust side supports locating piece 405 and bottom support locating piece 406 to processing
Positioning states;Restart the 5th driving mechanism 602 and the 6th driving mechanism 605 by tail end inlet flange 7-3 axial compressions;Start
7th driving mechanism 307 and the 8th driving mechanism 304, using briquetting 305 by the side Y direction pressure of inlet flange 7-2,7-3
Tightly;Finally start nine driving mechanisms 503 of ground to compress exhaust manifold 7Z axis directions to be processed using casting die 504, that is, completes to be added
The positioning and clamping of work exhaust manifold 7 carries out the processing of the end faces inlet flange 7-2,7-3.Complete the end faces inlet flange 7-2,7-3
Processing, first, second, third and fourth, five, six, seven, eight, nine driving mechanisms 212,410,414,408,602,605,307,304,503
Restore initial position, removes workpiece.It can be continuously finished batch exhaust manifold inlet flange face milling work by above procedure
The processing operation of sequence.This operational method is due to combine connecting hole as origin reference location, being aided with inlet flange side and bottom end
Face support positioning, it is thus possible to ensure the inlet flange end face morpheme size precision opposite between connecting hole with combining well,
After two sections of exhaust manifold combination connections, each inlet flange end face can be closely bonded with engine cylinder body connecting end surface, into
And ensure the integral installation quality of engine exhaust system.
Embodiment two
It is further improved, can be incited somebody to action as to one technical solution of embodiment referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6
Side supports positioning fixture 4 and side hold-down mechanism 3 are set as 2 groups or 3 groups, such as process the exhaust manifold of four cylinder engine and can set
2 groups of side supports positioning fixtures 4 and side hold-down mechanism 3 are set, 2 groups or 3 can be arranged by such as processing the exhaust manifold of six cylinder engine
Group side supports positioning fixture 4 and side hold-down mechanism 3, i.e., each inlet flange set one group of side supports positioning fixture 4 and side
Portion's hold-down mechanism 3, clamping is more secured, and processing is more smooth.Secondly, first, second, third and fourth, five, six, seven, eight, nine driving machines
Corner fluid cylinder can be used in structure 212,410,414,408,602,605,307,304,503 so that connection structure is simpler, moves
It is more convenient and accurate to make adjustments control.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical scheme of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.