CN204843015U - Boring cutter frame and boring cutter system in processing aerogenerator cabin - Google Patents
Boring cutter frame and boring cutter system in processing aerogenerator cabin Download PDFInfo
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- CN204843015U CN204843015U CN201520397988.XU CN201520397988U CN204843015U CN 204843015 U CN204843015 U CN 204843015U CN 201520397988 U CN201520397988 U CN 201520397988U CN 204843015 U CN204843015 U CN 204843015U
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Abstract
The utility model provides a boring cutter frame and boring cutter system in processing aerogenerator cabin, wherein, the boring cutter frame is including guiding axle, tool arm and boring cutter composite module, the top of guiding axle constitutes " T " font from the perpendicular intermediate position of connecting at the tool arm in one side of tool arm, boring cutter composite module has two, and they connect two ends of the left and right sides at the tool arm respectively, the tool arm includes girder and auxiliary girder, auxiliary girder detachably connects both ends about the girder, the intermediate position at the girder is connected to the guiding axle, and the guiding axle all is connected with two crossbeams, every auxiliary girder includes the crossbeam of two parallels, through one or more post fixed connection between two crossbeams, all be equipped with the mechanism that is connected with boring cutter composite module on the left and right both ends of girder and auxiliary girder, still including the shaft coupling mechanism, the oil circuit that are used for connecting the lathe main shaft. The boring cutter system, including lathe, aerogenerator cabin frame, guiding axle supporting seat and the boring cutter frame. The especially big aperture processing difficult problem more than the processing 2.5m can be solved to this scheme.
Description
Technical field
The technical program belongs to Wind turbines and to be correlated with the Machining Technology field of important feature assembly, specifically a kind of boring tool holder of processing engine rooms of wind power generators (base), boring cutter system and method for designing thereof.
Background technology
As shown in accompanying drawing 1,2,5,6, in prior art, the structure comparison of certain type engine rooms of wind power generators is special, out-of-shape and complicated, size comparatively large (long × wide × high) 5087mm × 4200mm × 3731mm, and single-piece blank weight is 59 tons; Required precision is high especially in addition, and Φ 3200/ Φ 2700/ Φ 2690/ Φ 840 large aperture is H7 fit tolerance, concentricity with beat all within 0.05mm, and fineness is Ra1.6.Adopt traditional means processing very difficulty, and cannot ensure to process its every required precision.
Summary of the invention
There are the problems referred to above to solve existing process technology, the technical program proposes a kind of method for designing of boring tool holder, boring cutter system and boring cutter system of processing engine rooms of wind power generators, specific as follows:
Process a boring tool holder for engine rooms of wind power generators, comprise the axis of guide, tool arm and boring cutter composite module; One end of the described axis of guide is vertically connected on the centre position of tool arm, forms " T " font; Boring cutter composite module has two, and they are connected to left and right two end of tool arm; Described tool arm comprises girder and auxiliary beam; Auxiliary beam is removably connected to the two ends, left and right of girder; Described girder comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post; The axis of guide is connected to the centre position of girder, and the axis of guide is all connected with two crossbeams; Each auxiliary beam comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post; The left and right two ends and auxiliary beam of girder are all provided with the mechanism be connected with boring cutter composite module; Also comprise the coupling body for connecting main shaft; This coupling body is connected to the centre position of tool arm, and coupling body is identical with the axis of the axis of guide; Also comprise oil circuit, one end of oil circuit is in boring cutter composite module position, and the other end connects the port of export of outside oil circuit.
The described axis of guide is connected by key with between tool arm;
The outer wall of the axis of guide has the screwed hole for connecting tool arm, tool arm has the through hole corresponding with screwed hole, each through hole, screwed hole are bolted;
The opposite side of tool arm is stretched out on the top of the axis of guide, and the axis of guide has the screwed hole for connecting shaft coupling, and the axes normal of this screwed hole is in the axis of the axis of guide; Screwed hole has one or more; Time screwed hole has multiple, they become axial symmetry about the axis of the axis of guide.
The material of described tool arm adopts aviation wrought aluminium 7050, and thickness is 80 ± 2mm;
Fastening point between horizontal beam and column is fixed by stud, and stud spacing is 70mm; Spacing between adjacent pillars is 360mm.
The described axis of guide, after adopting nitrated steel (38CrMoA1) processing, first carries out modifier treatment, then carry out nitrogen treatment to the surface of the axis of guide, make case hardness reach HV >=800;
Then to key position grinding, this key position comprises the joint face of the axis of guide and coupling body, the coupling part between the axis of guide and tool arm; Through grinding, the surface smoothness of key position reaches Ra0.8, ensures axis of guide axle external diameter h6 tolerance simultaneously.
Adopt a boring cutter system for the processing engine rooms of wind power generators of above-mentioned boring tool holder, comprise lathe, engine rooms of wind power generators frame, axis of guide supporting seat and described boring tool holder; Engine rooms of wind power generators is removably contained on engine rooms of wind power generators frame; Boring tool holder is by the main shaft of coupling body connecting machine tool; Axis of guide bracing frame is detachably connected in engine rooms of wind power generators, and position is at the end in processed hole; The bearing connecting the axis of guide is provided with in the centre position of axis of guide bracing frame; Position of bearings place is provided with lubricating oil outlet; The axis in processed hole is identical with the axis of the axis of guide.
The axis in described processed hole and the axis of the axis of guide are all levels.Described bearing is copper sheathing.Described engine rooms of wind power generators frame comprises multiple parallel support; The upper limb of each support is corresponding with the profile of the relevant position of engine rooms of wind power generators.
A method for designing for above-mentioned boring cutter system, step comprises:
Step 1) first structural analysis is carried out to workpiece to be machined:
Because affecting by workpiece to be machined architectural feature, it cannot process on vertical car, so hypothesis lays flat on one's back with base plane circle down, so the feed shaft of lathe and the stroke of Z axis and W axle cannot meet; Interfere by the distance between base plane circle and processed hole, in addition, dimensional tolerance and line position tolerance cannot meet;
Step 2) the clamping fixture structure of bamboo product workpiece:
Workpiece to be machined side clamping, and the distance dodged between base plane circle and processed hole is interfered, and makes to add feed shaft in man-hour Shen and goes out apart from shorter, easily ensure size and line position tolerance;
Adopt multiple support, workpiece to be machined center of gravity is distributed on the whole table top of workbench, make work top be subject to gravity even;
Step 3) then design carriage arbor:
After establishment processing technology, the data of the every data of aggregate machine tool and Workpiece structure, use aviation aluminium as the material of carriage arbor; Adopt assembled by cutter frame structure limit decision, select the thick aviation aluminium sheet of 80 ± 2mm, increase contact surface and increase fastening point simultaneously;
Step 4) this boring cutter system technological requirement is in use:
Carriage arbor is conducted oneself with dignity about 750kg, is cannot bear this weight completely by lathe self, utilizes the processed hole of workpiece to install axis of guide supporting seat;
Optimal parameter is the monolateral 3mm of cutting output, revolution is S=16 rev/min, feeding is that F=4.2mm/ divides.
The technical program can solve a large aperture processing difficult problem of processing more than 2.5m in machining industry, in the wind-driven generator assembly processing especially more than 5MW level.
Accompanying drawing explanation
Fig. 1 is the axial cross section schematic diagram (in figure, dimensional units is mm) of workpiece to be machined in this example;
Fig. 2 be Fig. 1 overlook (processed partial axial section) schematic diagram (in figure, dimensional units is mm), in figure, X indicating section is that inner chamber will process aperture;
Fig. 3 is the boring tool holder schematic diagram (in figure, dimensional units is mm) of this example;
Fig. 4 is the boring cutter system using state schematic top plan view (in figure, dimensional units is mm) of this example;
Fig. 5 is the delete flag of workpiece shown in Fig. 1 schematic diagram;
Fig. 6 is the delete flag of workpiece shown in Fig. 2 schematic diagram;
In above-mentioned figure: the axis of guide 1, tool arm 2, boring cutter composite module 3, girder 4, auxiliary beam 5, crossbeam 6, post 7, coupling body 8, oil pipe 9, lathe 10, engine rooms of wind power generators 11, axis of guide supporting seat 12, boring tool holder 13; Copper sheathing 14, driving key 15, fastening point 16, aviation aluminium sheet 17, inner chamber will process aperture X.
Detailed description of the invention
The concrete situation of workpiece described in the technical program and manuscript 1,2 thereof is introduced below in conjunction with accompanying drawing:
Process a boring tool holder for engine rooms of wind power generators, by machine tool chief axis powered belt cutter rotary cutting workpiece.Key be centre pilot axle play support cutter deadweight and the centre of location and eliminate cut in produce vibration and stress, its material selection nitrated steel (38CrMoA1) processing after modified and nitrogen treatment, finally grind key position.It is assembled after processing that its blade holder part material is aviation aluminium, and emphasis selects the thickness of aviation aluminium sheet (aviation wrought aluminium 7050), the quantity of fastening point, the distribution of reinforcement part, guarantee that knife rest has enough intensity and precision to refer to accompanying drawing 3.
This boring tool holder, (effect of this module is clamping boring cutter, make it to be connected with tool arm, and link position can be finely tuned to comprise the axis of guide, tool arm and boring cutter composite module.Adopt prior art can simple realization, without particular requirement); One end of the described axis of guide is vertically connected on the centre position of tool arm, forms " T " font; Boring cutter composite module has two, and they are connected to left and right two end of tool arm; Described tool arm comprises girder and auxiliary beam; Auxiliary beam is removably connected to the two ends, left and right of girder; Described girder comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post; The axis of guide is connected to the centre position of girder, and the axis of guide is all connected with two crossbeams; Each auxiliary beam comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post; The left and right two ends and auxiliary beam of girder are all provided with the mechanism be connected with boring cutter composite module; Also comprise the coupling body (mechanism can adopt the technology of existing maturation, without particular/special requirement) for connecting main shaft; This coupling body is connected to the centre position of tool arm, and coupling body is identical with the axis of the axis of guide; Also comprise oil circuit, one end of oil circuit is in boring cutter composite module position, and the other end connects the port of export of outside oil circuit.
The described axis of guide, after adopting nitrated steel (38CrMoA1) processing, first carries out traditional modifier treatment, then carry out nitrogen treatment to the surface of the axis of guide; Nitrogen treatment carries out in nitriding furnace, carrys out adjusting process parameter, make the case hardness of the axis of guide after nitrogen treatment reach HV >=800 through experiment; Then to key position grinding, as axis of guide connecting machine tool main shaft face and locating hole, the smooth lead of Φ 150h6 and crossbeam coupling part, its surface smoothness requirements reaches Ra0.8 and ensures axle external diameter h6 tolerance, the required precision of such guarantee cutter simultaneously.
The material of described tool arm adopts aviation wrought aluminium 7050, and thickness is 80 ± 2mm.
Fastening point between horizontal beam and column totally 8, be divided into each 4 the M16 screw threads of positive and negative, its screw spacing is 70mm.Adopting 8 place's reinforcements (i.e. post) altogether, being distributed in spacing adjacent on beam is 360mm.
The described axis of guide is connected by key with between tool arm; On the outer wall of the axis of guide, have 10 M20 screwed holes vertically, tool arm has the through hole corresponding with screwed hole, each through hole, screwed hole are bolted, and form fastening point.Fastening point be mainly distributed as directly fixing tool arm 4 M20 0 ° with last 2 of 180 ° of faces, being fixedly connected with ring has 6 M20 in circumference 360 ° of decile angles, then fixes tool arm from connecting ring and have 12 M20 holes.
Adopt a boring cutter system for the processing engine rooms of wind power generators of above-mentioned boring tool holder, comprise lathe, engine rooms of wind power generators frame, axis of guide supporting seat and described boring tool holder; Engine rooms of wind power generators is removably contained on engine rooms of wind power generators frame; Boring tool holder is by the main shaft of coupling body connecting machine tool; Axis of guide bracing frame is detachably connected in engine rooms of wind power generators, and position is at the end in processed hole; The bearing connecting the axis of guide is provided with in the centre position of axis of guide bracing frame; Position of bearings place is provided with lubricating oil outlet; The axis in processed hole is identical with the axis of the axis of guide.
The axis in described processed hole and the axis of the axis of guide are all levels.Described bearing is copper sheathing.Described engine rooms of wind power generators frame comprises multiple parallel support; The upper limb of each support is corresponding with the profile of the relevant position of engine rooms of wind power generators.
This boring cutter system, clamping workpiece is fixed on exclusive clamps tool, to inlay copper sheathing in workpiece Φ 840 hole location and installation accessory shafts bearing, its bearing block, additional oil lubricating, then knife rest is arranged on machine tool chief axis, accompanying drawing 4 is referred in rotary main shaft carry its tools processing work aperture.
A method for designing for above-mentioned boring cutter system, step comprises:
Step 1) first structural analysis is carried out to workpiece to be machined:
Cannot process on vertical car because affecting by Workpiece structure feature at all.Suppose to lay flat on one's back with Φ 4200 circle down, so the stroke of the feed shaft (Z axis and W axle) of lathe cannot meet, and interfering by 1809 distances as shown in Figure 1, is secondly that dimensional tolerance and line position tolerance cannot meet.
Step 2) the clamping fixture structure of bamboo product workpiece:
Through in many ways deciding through discussion, workpiece side clamping, mainly dodging workpiece 1809 apart from interference, make to add feed shaft in man-hour Shen and go out apart from shorter, easily ensure size and line position tolerance.
Adopt half-circle-arc shape positioning workpieces, workpiece center of gravity can be distributed on the whole table top of workbench, make work top be subject to gravity even.
Step 3) then design carriage arbor:
After establishment processing technology, the every data of aggregate machine tool data relevant with Workpiece structure start to design knife rest and to be correlated with significant dimensions.Material selection is consulted a lot of related data and combines some relevant experience of colleague, determine to use aviation aluminium, limit by cutter frame structure, commercially be difficult to find monoblock aluminium material, adopt assembled by analysis, select 75mm thick in aluminium sheet, increase contact surface and increase fastening point simultaneously, please refer to accompanying drawing 3.
Step 4) the in use required technological requirement of this boring cutter system is:
Therefore knife rest is conducted oneself with dignity about 750kg, is cannot bear this weight completely, utilizes workpiece Φ 840 hole and screwed hole installation accessories bearing block to support, refer to accompanying drawing 4 by lathe self.Processed by the examination of different cutting outputs and cutting parameter, finally better parameter is the monolateral 3mm of cutting output Φ 6, revolution is S=16 rev/min, feeding is that F=4.2mm/ divides.
As long as aperture can complete roughing and fine finishining in 54 hours as shown in accompanying drawing 1,2.After laser detection, all dimensional tolerances and line position tolerance and fineness are all in illustrated claimed range.
Claims (8)
1. process a boring tool holder for engine rooms of wind power generators, it is characterized in that comprising the axis of guide, tool arm and boring cutter composite module;
The top of the described axis of guide is vertically connected on the centre position of tool arm from the side of tool arm, form " T " font; Boring cutter composite module has two, and they are connected to left and right two end of tool arm;
Described tool arm comprises girder and auxiliary beam; Auxiliary beam is removably connected to the two ends, left and right of girder;
Described girder comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post; The axis of guide is connected to the centre position of girder, and the axis of guide is all connected with two crossbeams;
Each auxiliary beam comprises two parallel crossbeams, is fixedly connected with between two crossbeams by one or more post;
The left and right two ends and auxiliary beam of girder are all provided with the mechanism be connected with boring cutter composite module;
Also comprise the coupling body for connecting machine tool main shaft; This coupling body is connected to the centre position of tool arm, and coupling body is identical with the axis of the axis of guide;
Also comprise oil circuit, one end of oil circuit is in boring cutter composite module position, and the other end connects the port of export of outside oil circuit.
2. boring tool holder according to claim 1, is characterized in that the described axis of guide is connected by key with between tool arm;
The outer wall of the axis of guide has the screwed hole for connecting tool arm, tool arm has the through hole corresponding with screwed hole, each through hole, screwed hole are bolted;
The opposite side of tool arm is stretched out on the top of the axis of guide, and the axis of guide has the screwed hole for connecting shaft coupling, and the axes normal of this screwed hole is in the axis of the axis of guide; Screwed hole has one or more; Time screwed hole has multiple, they become axial symmetry about the axis of the axis of guide.
3. boring tool holder according to claim 1, it is characterized in that the material of described tool arm adopts aviation wrought aluminium 7050, thickness is 80 ± 2mm;
Fastening point between horizontal beam and column is fixed by stud, and stud spacing is 70mm; Spacing between adjacent pillars is 360mm.
4. boring tool holder according to claim 1, it is characterized in that the material of the described axis of guide adopts nitrated steel 38CrMoA1, the case hardness of the axis of guide reaches HV >=800.
5. adopt a boring cutter system for the processing engine rooms of wind power generators of the arbitrary boring tool holder of Claims 1 to 4, it is characterized in that comprising lathe, engine rooms of wind power generators frame, axis of guide supporting seat and described boring tool holder;
Engine rooms of wind power generators is removably contained on engine rooms of wind power generators frame;
Boring tool holder is by the main shaft of coupling body connecting machine tool;
Axis of guide bracing frame is detachably connected in engine rooms of wind power generators, and position is at the end in processed hole; The bearing connecting the axis of guide is provided with in the centre position of axis of guide bracing frame; Position of bearings place is provided with lubricating oil outlet;
The axis in processed hole is identical with the axis of the axis of guide.
6. boring cutter system according to claim 5, is characterized in that the axis in described processed hole and the axis of the axis of guide are all levels.
7. boring cutter system according to claim 6, is characterized in that described bearing is copper sheathing.
8. boring cutter system according to claim 7, is characterized in that described engine rooms of wind power generators frame comprises multiple parallel support; The upper limb of each support is corresponding with the profile of the relevant position of engine rooms of wind power generators.
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|---|---|---|---|
| CN201520397988.XU CN204843015U (en) | 2015-06-10 | 2015-06-10 | Boring cutter frame and boring cutter system in processing aerogenerator cabin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972151A (en) * | 2015-06-10 | 2015-10-14 | 江苏钢锐精密机械有限公司 | Boring tool rest and system for machining of wind driven generator room and design method of boring tool system |
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- 2015-06-10 CN CN201520397988.XU patent/CN204843015U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972151A (en) * | 2015-06-10 | 2015-10-14 | 江苏钢锐精密机械有限公司 | Boring tool rest and system for machining of wind driven generator room and design method of boring tool system |
| CN104972151B (en) * | 2015-06-10 | 2017-10-03 | 江苏钢锐精密机械有限公司 | Process boring tool holder, boring cutter system and its design method of engine rooms of wind power generators |
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