CN201979303U - Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor - Google Patents
Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor Download PDFInfo
- Publication number
- CN201979303U CN201979303U CN2010206825039U CN201020682503U CN201979303U CN 201979303 U CN201979303 U CN 201979303U CN 2010206825039 U CN2010206825039 U CN 2010206825039U CN 201020682503 U CN201020682503 U CN 201020682503U CN 201979303 U CN201979303 U CN 201979303U
- Authority
- CN
- China
- Prior art keywords
- broaching
- fixture
- indexing
- clamp
- processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
A clamp for broaching a super-large-dimension dovetail type mortise of a heavy type gas turbine compressor is mainly composed of the following components: a clamp base, an indexing clamp, a guide groove assembly, an auxiliary support and a jack; wherein, the auxiliary support is provided on the guide groove assembly; the guide groove assembly is provided on the jack; the indexing clamp is connected with the clamp base and is provided above the guide groove assembly. The clamp for broaching the super-large-dimension dovetail type mortise of the heavy type gas turbine compressor is applied in the large-scale aviation industrial engine, gas turbine and turbocharger, and the high-precision mortise broaching of the large-dimension and super-large-dimension disk which is made of hard machining material. Large friction of a pulling bed clamp indexing system can be overcome and artificial indexing can be realized. The technical problems in the indexing clamp, such as front end sinking, overlarge vibration in broaching, broaching tool creeping and non-uniform clearance between an indexing disk and an indexing disk base are overcome. The clamp provided by the utility model can improve the machining precision and operation efficiency in broaching.
Description
Technical field
The utility model relates to design of Clamping Apparatus, and a kind of heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing is provided especially.
Background technology
Different according to different, the production lot of the designing requirement of the design feature of wheel disc or rotor, tongue-and-groove and service condition and existing working condition, tongue-and-groove processing can be adopted processes such as Milling Process, Wire-cut Electrical Discharge Machining, broaching processing.At present, a Milling Process Wire-cut Electrical Discharge Machining is adopted in the processing of large scale, oversize wheel disc tongue-and-groove more in the domestic big-block engine, and the characteristics of Milling Process and Wire-cut Electrical Discharge Machining are as described below:
1, Milling Process
Utilize five-axle linkage horizontal Machining centers or twin columns multi-coordinate ganged rotor tongue-and-groove production miller to mill processing to the tongue-and-groove of dish class part or the various grooveds of rotor class part, milling cutter needs the specialized designs manufacturing, tongue-and-groove usually need be through thick fluting, rough milling that profile of tooth and finish-milling profile of tooth etc. repeatedly process can moulding, general roughing milling cutter is manufactured and designed by domestic, and the finish-milling cutter generally adopts and abroad manufactures and designs, and the tongue-and-groove milling method is widely used in domestic and international gas-turbine factory.
2, Wire-cut Electrical Discharge Machining
Adopt the high accuracy thread feed electric spark wire cutting machine of being careful to carry out tongue-and-groove processing, but, this technology produces micro-crack owing to can forming the remelted layer recast layer on the part to be processed surface, do not allow the existence of remelted layer on the stressed bigger strength member of dish on the modern aeroengine, axle class vital part and some, though have different process corrosion or polishing etc. can remove remelted layer, thoroughly also there are technological difficulties in removal and reliable detection.
In processing of booster turbine dish tongue-and-grooves such as internal combustion engine and blade tenon processing, domestic still have some producers to adopt the common thread feed electric spark wire cutting technology of hurrying up, this process is simple to operate, equipment and frock small investment, technology content are not high, but overall quality level is not high yet.
In the heavy combustion engine, the disk-like accessory that has different grooveds is generally all worked under high temperature, high rotating speed and heavily stressed condition of work, therefore taking turns disk material adopts stainless steel, titanium alloy or high temperature alloy to make as required mostly, stainless steel, titanium alloy or high temperature alloy all belong to difficult-to-machine material, because tongue-and-groove will be born the huge centrifugal loading that blade produces when rotating at a high speed, so that tongue-and-groove trench structure complexity, dimension precision requirement height, roughness require is high, the technical conditions project is many, quality requirement strictness etc. becomes tongue-and-groove and processes the technological difficulties that will face.
Compare with Wire-cut Electrical Discharge Machining with Milling Process, but broaching processing is a high accuracy, the technology of high efficiency of forming processing, be widely used in domestic and international aero-engine, in the tongue-and-groove processing of gas engine wheel disk-like accessory, broaching processing at 2 meters large-scale disk ring spare tongue-and-grooves in the left and right sides of diameter, really there is the difficult point on the bottleneck and technology on many equipments, be the smooth implementation of guaranteeing state key project financing and the required precision of this project diskware, the utility model provides a kind of heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing especially.
Summary of the invention
The utility model provides a kind of heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing especially, be applied in large aerospace industrial engine, gas turbine gas-turbine, the turbocharger, and in the large scale of difficult-to-machine material stainless steel, titanium alloy or high temperature alloy, the oversize diskware high accuracy tongue-and-groove broaching processing; Can overcome the huge frictional force of broaching fixture indexing system, realize manual calibration, technical barrier such as overcome that the indexing fixture front end sinks, vibration is excessive during broaching, broaching tool is creeped, indexing fixture and stamper gap are inhomogeneous, machining accuracy and operating efficiency that the anchor clamps that use the utility model to provide can make broaching process are higher.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, described anchor clamps are mainly by drawing tool seat, indexing fixture, gathering sill assembly, supplemental support, jack to form, wherein, supplemental support places on the gathering sill assembly, the gathering sill assembly places on the jack, indexing fixture with draw the tool seat to be connected and place gathering sill assembly top.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, described indexing fixture mainly is made up of index dial and indexing fixture seat, wherein is provided with steel ball and flexible member between index dial and the indexing fixture seat; Thereby the frictional force that can reduce between index dial and the indexing fixture seat realizes manual calibration.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, described index dial external diameter is provided with radial hole, is provided with the power-assisted handle in the radial hole; Power-assisted when being used for manual calibration.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, the foundry goods of described gathering sill assembly is provided with reinforcement; Can increase the rigidity of gathering sill assembly upper cantilever.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove described in the utility model broaching fixture for processing, wherein, described indexing fixture with draw the bottom of tool seat front end face mating surface to be provided with pad.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, the quantity of reinforcement is 6～50 on the foundry goods of described gathering sill assembly.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, the front end of described supplemental support is fixed by bolts to the rear end face bottom of indexing fixture seat, the bolt back-out of rear end is supported on the front end-plate of indexing fixture seat.
Heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing described in the utility model, wherein, described pad is the thick copper sheet of 0.7～0.8mm.
Do not allow preceding several teeth of first broaching tool participate in cutting during broaching tool design under normal circumstances, follow-up broaching tool first tooth height is in principle with last contour last tooth of broaching tool, this design is safety on the one hand, can remove one on the other hand the cutter relieving resilience of broaching tool broaching back workpiece; Coil the anchor clamps of using when tongue-and-groove is broached because indexing fixture and workpiece and gland weight are all very big and restrike, and present sinkage, make between first broaching tool foremost cutter tooth and the workpiece and negative clearance occurs, by analysis, think that the reason that negative clearance occurs mainly contains two, first is that anchor clamps adopt the support structure indexing fixture of similar " casing ", basically there is not reinforcement, second is to see from the side to take laterally zygomorphic supporting way, the strong point is bigger apart from the height of gathering sill, is not enough to overcome the indexing fixture that gross weight reaches 5～6 tons, workpiece, the sinking moment that gland forms..
Therefore,, make institute's tongue-and-groove that draws and workpiece centre line parallel, take to be provided with the method for pad in indexing fixture seat and the bottom of drawing tool seat front end face mating surface for indexing fixture " recovery " is arrived the tram.
Draw in the projection disk process in examination, find that there is obvious band in groove bottom, band is rule very, visual longitudinal separation is about 1.2～1.5mm, the degree of depth is 0.05～0.1mm, broaching is a kind of interrupted cut, the body structure lathe bed rigidity of welding in broaching machine-indexing fixture-workpiece-broaching tool system and forming is relatively poor, hydraulic motion secondary motion precision is low, broaching tool is carefully grown, not only must and gathering sill between have necessary gap, and broaching tool is close to cantilever position work down, thereby very easily produces vibration, under certain broaching speed, the vibration frequency that the pulsation cutting force produces very easily produces resonance when close with system frequency, the noise of not only broaching obviously strengthens, even a certain link of system can produce visual visible amplitude, has not only destroyed broaching tool in this case and has normally cut, sharply quicken the wearing and tearing of broaching tool, also cause the decline of workpiece tongue-and-groove surface roughness or the oscillation mark of generation; In order to address this problem, we are in the adjustment of anchor clamps having been done aspect following 3:
1 adjustment index dial and index dial base gap make it even, find indexing fixture vertical direction left side index dial and the applying of index dial base on inspection closely, clearance gauge checks that the maximal clearance is no more than 0.03mm, and the indexing fixture right side, between index dial and index dial base obvious printing opacity is arranged, clearance gauge checks that the gap is in 0.30～0.50mm scope, indexing fixture is decomposed, discovery is used to reduce the steel ball of calibration friction with the raceway loss, cause the index dial base depression and projection to occur, we reinstall after with index dial base and the equating of index dial matching surface, measure index dial and index dial base gap and be not more than 0.03mm in circumference range;
2 improve the indexing fixture rigidity, increase supplemental support, the bolt that the front end of supplemental support is fixed by bolts to rear end face bottom, the rear end of indexing fixture seat screws out and is supported on the front end-plate of indexing fixture seat, is equivalent to provide a prestressing force, in order to offset the vibration stress that the pulsation broaching causes;
3 reduce broaching speed, because the broaching system rigidity is poor, under certain condition of work, the size of cutting force as pulsation, unfavorable broaching speeds etc. all have the energy of agreeing and system resonance thereof, thereby having destroyed broaching tool normally cuts, the wearing and tearing of aggravation broaching tool reduce tongue-and-groove surface quality etc., therefore, it is very important selecting a broaching speed with the whole system coupling, we once reduce to 3 meters/minute, 1.7 meters/minute with broaching speed, oscillation phenomenon complete obiteration, stable cutting, noiseless, the tongue-and-groove bottom surface of drawing does not have ripple.
Description of drawings
Fig. 1 is broaching lathe for machining schematic diagram;
Fig. 2 is broaching fixture for processing profile;
Fig. 3 is the indexing fixture schematic diagram.
The specific embodiment
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, described anchor clamps are mainly by drawing tool seat 1, indexing fixture 2, gathering sill assembly 3, supplemental support 4, jack 5 to form, wherein, supplemental support 4 places gathering sill assembly 3 tops, gathering sill assembly 3 places on the jack 5, indexing fixture 2 with draw tool seat 1 to be connected and place gathering sill assembly 3 tops.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, described indexing fixture 2 mainly is made up of index dial 20 and indexing fixture seat 21, wherein is provided with steel ball 22 and spring 23 between index dial 20 and the indexing fixture seat 21; Thereby the frictional force that can reduce between index dial and the indexing fixture seat realizes manual calibration.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, described index dial 20 external diameters are provided with radial hole, are provided with power-assisted handle 24 in the radial hole; Power-assisted when being used for manual calibration.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, the foundry goods 26 of described gathering sill assembly 3 is provided with reinforcement; Can increase the rigidity of gathering sill assembly upper cantilever.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, described indexing fixture 2 with draw the bottom of tool seat 1 front end face mating surface to be provided with pad.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, the quantity of reinforcement is 6～50 on the foundry goods 26 of described gathering sill assembly 3.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, the front end of described supplemental support is fixed by bolts to the rear end face bottom of indexing fixture seat 21, the bolt back-out of rear end is supported on the front end-plate of indexing fixture seat 21.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, described pad is the thick copper sheet of 0.75mm, overcomes anchor clamps and workpiece sinkage, makes institute's tongue-and-groove that draws and workpiece centre line parallel.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, in order to make stable cutting, adjust index dial 20 and make it evenly with index dial base gap, measure index dial 20 and in circumference range, be not more than 0.03mm with index dial base gap.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, wherein, increase supplemental support 4, in order to improve indexing fixture 2 rigidity, the bolt that the front end of supplemental support 4 is fixed by bolts to rear end face bottom, the rear end of indexing fixture seat 21 screws out and is supported on the front end-plate of indexing fixture seat 21, be equivalent to provide a prestressing force, in order to offset the vibration stress that the pulsation broaching causes.
The described heavy combustion engine compressor of present embodiment oversize dove-tail form tongue-and-groove broaching fixture for processing, reduced broaching speed, because the broaching system rigidity is poor, under certain condition of work, the size of cutting force as pulsation, unfavorable broaching speeds etc. all have the energy of agreeing and system resonance thereof, normally cut the wearing and tearing of aggravation broaching tool thereby destroyed broaching tool, reduce tongue-and-groove surface quality etc., therefore, it is very important selecting a broaching speed with the whole system coupling, and we once reduce to 3 meters/minute with broaching speed, 1.7 rice/minute, the oscillation phenomenon complete obiteration, stable cutting, noiseless, the tongue-and-groove bottom surface of drawing does not have ripple.
Claims (8)
1. heavy combustion engine compressor oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: described anchor clamps are mainly by drawing tool seat (1), indexing fixture (2), gathering sill assembly (3), supplemental support (4), jack (5) to form, wherein, supplemental support (4) places gathering sill assembly (3) top, gathering sill assembly (3) places on the jack (5), indexing fixture (2) with draw tool seat (1) to be connected and place gathering sill assembly (3) top.
2. according to the described heavy combustion engine compressor of claim 1 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: described indexing fixture (2) mainly is made up of index dial (20) and indexing fixture seat (21), wherein is provided with steel ball (22) and flexible member (23) between index dial (20) and the indexing fixture seat (21).
3. according to the described heavy combustion engine compressor of claim 2 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: described index dial (20) external diameter is provided with radial hole, is provided with power-assisted handle (24) in the radial hole.
4. according to the described heavy combustion engine compressor of claim 1 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: the foundry goods (26) of described gathering sill assembly (3) is provided with reinforcement.
5. according to the described heavy combustion engine compressor of claim 1 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: described indexing fixture (2) with draw the bottom of tool seat (1) front end face mating surface to be provided with pad.
6. according to the described heavy combustion engine compressor of claim 4 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: the quantity that the foundry goods (26) of described gathering sill assembly (3) is gone up reinforcement is 6～50.
7. according to the described heavy combustion engine compressor of claim 4 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: the front end of described supplemental support is fixed by bolts to the rear end face bottom of indexing fixture seat (21), the bolt back-out of rear end is supported on the front end-plate of indexing fixture seat (21).
8. according to the described heavy combustion engine compressor of claim 5 oversize dove-tail form tongue-and-groove broaching fixture for processing, it is characterized in that: described pad is the thick copper sheet of 0.7～0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206825039U CN201979303U (en) | 2010-12-28 | 2010-12-28 | Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206825039U CN201979303U (en) | 2010-12-28 | 2010-12-28 | Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201979303U true CN201979303U (en) | 2011-09-21 |
Family
ID=44606771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206825039U Expired - Fee Related CN201979303U (en) | 2010-12-28 | 2010-12-28 | Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201979303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689789A (en) * | 2014-11-28 | 2016-06-22 | 中国石油天然气集团公司 | Wheel disc broaching device |
| CN115351369A (en) * | 2022-09-08 | 2022-11-18 | 上海尚实航空发动机股份有限公司 | Method for machining turbine blade with crown |
-
2010
- 2010-12-28 CN CN2010206825039U patent/CN201979303U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689789A (en) * | 2014-11-28 | 2016-06-22 | 中国石油天然气集团公司 | Wheel disc broaching device |
| CN105689789B (en) * | 2014-11-28 | 2019-05-07 | 中国石油天然气集团公司 | A kind of wheel disc broacher |
| CN115351369A (en) * | 2022-09-08 | 2022-11-18 | 上海尚实航空发动机股份有限公司 | Method for machining turbine blade with crown |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205996581U (en) | Engine compressor disk anti-deformation machining tool fixture | |
| CN107717030B (en) | A kind of processing method of the long boss of Titanium alloy TA15 thin-walled | |
| CN105252224A (en) | Machining method of outer duct outlet guide vane of aero-engine | |
| CN105665805B (en) | One kind is hardened the special indexable hat rose cutter of steel mold | |
| CN101972870A (en) | Turbine blade root milling cutter | |
| CN103028987B (en) | Numerical control processing fixture for two perpendicularly-crossed shafts | |
| CN104801935A (en) | Method for processing aircraft aluminum alloy special-shaped cabin | |
| CN110509016B (en) | Manufacturing process of ultra-fine hard alloy milling cutter | |
| CN201979303U (en) | Clamp for broaching super-large-dimension dovetail type mortise of heavy type gas turbine compressor | |
| CN201950298U (en) | Replaceable carbide blade hob | |
| CN204893120U (en) | Rotatory processingequipment of electric spark electrode | |
| CN112846430B (en) | Rudder stock key groove slotting device and using method thereof | |
| CN201895097U (en) | Combined cutting tool | |
| Yang et al. | CFRP grinding wheels for high speed and ultra-high speed grinding: A review of current technologies and research strategies | |
| CN103722203A (en) | Porous metallic beryllium deep-hole machining method | |
| CN203696170U (en) | Built-up jig for machining main body and sleeve of lathe wrench | |
| CN206047647U (en) | A kind of double main shaft special planes suitable for Crankshaft Machining | |
| CN2701560Y (en) | Universal joint yoke boring and milling head with 90 degree extension arm for boring and milling machine | |
| CN201220347Y (en) | Axle end centre hole superimposing structure | |
| CN204912886U (en) | Novel interchangeable formula T type groove milling cutter | |
| CN208050948U (en) | A kind of compound tool of processing vehicle rear wheel hub | |
| CN110332985A (en) | A kind of Blade measuring frequency tooling and its processing method | |
| CN201799879U (en) | Key groove centering clamp | |
| CN219503776U (en) | Positioning tool for machining end face of turbine shaft | |
| CN206305702U (en) | A kind of screw thread reinforcing processing cutter head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |