CN210305771U - Blade bolt machining device - Google Patents
Blade bolt machining device Download PDFInfo
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- CN210305771U CN210305771U CN201921109138.XU CN201921109138U CN210305771U CN 210305771 U CN210305771 U CN 210305771U CN 201921109138 U CN201921109138 U CN 201921109138U CN 210305771 U CN210305771 U CN 210305771U
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Abstract
The utility model provides a processingequipment of blade bolt, it includes: the spindle chuck is provided with a gap for the blade bolt blank to pass through in the axial direction, and a clamping part for clamping the blade bolt blank at the gap is arranged on the spindle chuck; perpendicular to first lathe tool and the second lathe tool of axle direction, first lathe tool with second lathe tool is in opposite directions's setting to be in the perpendicular to do not coincide in the axle direction. The blade bolt blank is fixed by arranging the spindle chuck, and the first turning tool and the second turning tool are arranged in opposite directions, so that the pressure of the first turning tool and the second turning tool is partially offset during turning, better coaxiality can be maintained during processing, and the vibration of the first turning tool and the second turning tool is prevented.
Description
Technical Field
The utility model relates to a processingequipment of blade bolt.
Background
At present, the wind power industry in China rises rapidly on the background of national policy support and energy supply tension. At present, the main manufacturing technology of the domestic large-scale wind driven generator tends to be mature, various host manufacturers also strive to research and develop 8MW, 10MW and even higher-power units, and the blades matched with the host manufacturers are also larger and longer in order to obtain higher wind energy utilization coefficient. The blade bolt is used as an important part for connecting the blade and the hub, bears larger alternating load in the running process of the fan, and is easy to generate fatigue failure due to the increase and the lengthening of the blade, so that the requirement on the quality of a product is higher. The blade bolt mainly comprises threads at two ends, a middle rod part and an inner hexagon of an end face.
The design requirements of the clamp of the stud are different because both sides of the stud are provided with threads needing to be processed. The prior art is when processing the stud of different specifications, all processes the screw thread of one end earlier, then dismantles anchor clamps again and changes another one and process, and very inconvenient in the operation, positioning accuracy is low, assurance axiality that can not be fine, can damage the screw thread moreover, has reduced production efficiency.
In view of this, document 1 (publication No. CN102581671A) discloses a bolt jig for ensuring coaxiality, including a screw, a fixing block, a cylinder, and a clamping cylinder; the clamping cylinder is internally provided with a containing groove; the diameter of the cylinder is the same as the diameter of the accommodating groove of the clamping cylinder; a fixed block vertical to the cylinder is arranged on the cylinder; the fixed block is provided with a screw; the cylinder is inserted into the accommodating groove and is fixed on the clamping cylinder through a screw; the inner diameter of the cylinder is the same as the diameter of the workpiece, and when the workpiece is machined, the cylinder is fixed to the holding cylinder, and then the workpiece is inserted into the cylinder and then machined.
However, because the blade bolts bear large alternating loads during operation, the intermediate rod portion is usually designed to have a slender rod structure to improve the fatigue resistance of the bolts. During machining, if the scheme of the fixing block in the document 1 is adopted, the bolt needs to be fixed by a large clamping force to ensure good coaxiality. However, in this case, the bolt is easily broken when the turning tool is machined. On the other hand, in the case of turning the outer circle of the slender shaft, if the aspect ratio exceeds 3, the tool is very likely to vibrate.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a processing device of blade bolt that can be better keep processed blade bolt blank axiality, lathe tool more stable in order to overcome the defect that the long and thin blank axiality of processing device processing of current bolt is low or shake the sword easily.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a processingequipment of blade bolt which characterized in that, it includes: the spindle chuck is provided with a gap for the blade bolt blank to pass through in the axial direction, and a clamping part for clamping the blade bolt blank at the gap is arranged on the spindle chuck; perpendicular to first lathe tool and the second lathe tool of axle direction, first lathe tool with second lathe tool is in opposite directions's setting to be in the perpendicular to do not coincide in the axle direction.
Preferably, the blade inclination directions of the first turning tool and the second turning tool are opposite.
Preferably, the processing device of the blade bolt further comprises a secondary shaft chuck,
the secondary shaft chuck is also provided with a clamping component used for clamping the blade bolt blank in the axial direction, and the first turning tool and the second turning tool are positioned between the main shaft chuck and the secondary shaft chuck.
Preferably, the first turning tool is closer to the spindle chuck than the second turning tool, and the edge of the first turning tool is inclined toward the spindle chuck.
Preferably, the distance from the first turning tool and the second turning tool to the spindle chuck is smaller than the distance from the first turning tool and the second turning tool to the secondary spindle chuck.
Preferably, the clamping members of the primary and secondary shaft chucks have at least three points of contact with the blade bolt blank when clamped.
Preferably, the secondary axis chuck is configured to be movable in a direction parallel to the axis direction.
The utility model discloses an actively advance the effect and lie in: the blade bolt blank is fixed by arranging the spindle chuck, and the first turning tool and the second turning tool are arranged in opposite directions, so that the pressure of the first turning tool and the second turning tool is partially offset during turning, better coaxiality can be maintained during processing, and the vibration of the first turning tool and the second turning tool is prevented.
Drawings
Fig. 1 is a schematic structural view of a blade bolt processing apparatus according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a blade bolt processing apparatus according to this embodiment. As shown in fig. 1, the blade bolt processing apparatus 100 of the present embodiment includes: a spindle chuck 20, the spindle chuck 20 having a gap in an axial direction through which the blade bolt blank 10 passes, and the spindle chuck 20 being provided with a clamping member for clamping the blade bolt blank 10 at the gap; the first and second blades 31 and 32 are disposed to face each other perpendicular to the axial direction, and the first and second blades 31 and 32 are not overlapped in the direction perpendicular to the axial direction.
The blade bolt machining apparatus 100 further includes a secondary shaft chuck 40, the secondary shaft chuck 40 is also provided with a clamping member for clamping the blade bolt blank 10 in an axial direction, and the first blade 31 and the second blade 32 are located between the primary shaft chuck 20 and the secondary shaft chuck 40. As shown in fig. 1, the opposite sides of the main shaft chuck 20 and the sub shaft chuck 40 are further provided with stoppers.
The blade angles of the first and second wheels 31 and 32 are opposite. The first blade 31 is closer to the spindle chuck 20 than the second blade 32, and the blade edge of the first blade 31 is inclined toward the spindle chuck 20.
Here, the first turning tool 31 may be used for finish turning, and the second turning tool 32 may be used for rough turning. Generally, rough turning has lower operation precision requirements and higher tolerance for tool chatter, and therefore, placing the second tool 32 farther from the spindle chuck 20 can reduce the effect of tool chatter on the machining precision.
The first and second blades 31 and 32 are spaced apart from the spindle chuck 20 by a distance smaller than the first and second blades 31 and 32 are spaced apart from the sub-spindle chuck 40.
The clamping parts of the main shaft chuck 20 and the sub shaft chuck 40 have three contact points with the blade bolt blank 10 when clamping (i.e., a three-jaw chuck configuration is employed). The secondary axis chuck 40 is configured to be movable in a direction parallel to the axis direction.
During turning, the blade bolt blank 10 can be cut into required lengths, the blade bolt blank 10 can be pushed to the spindle chuck 20 from the left end in the feeding direction a by an ejector pin (not shown in the figure), the spindle chuck 20 clamps after extending out of the spindle chuck by 100mm, the secondary spindle chuck 40 rapidly moves to the left to the blade bolt blank and clamps the position of the blade bolt blank extending out by 60mm, the spindle chuck 20 loosens, the secondary spindle chuck 40 pulls the blade bolt blank to move rightwards (namely, the discharging direction B in fig. 1), when the residual blade bolt blank in the spindle chuck 20 is about 60mm, the secondary spindle chuck stops moving, the spindle chuck 20 clamps, after the operation according to the steps, the spindle chuck 20 clamps two ends of the blade bolt blank respectively, and clamping is completed at one time.
After the clamping is completed, the first cutter 31 and the second cutter 32 start to work. In this embodiment, the size of the rod portion of the finished blade bolt 11 is 28 to 30mm, the total length is about 500 to 1000mm, the bolt belongs to a slender rod, a tool is easy to shake during ordinary machining, the rod portion is also easy to bend and deform, the dimensional accuracy and the product straightness are affected, and the problems of bending and tool shaking of a single-tool machining material can be solved by adopting a forward and reverse double-tool mode (i.e. the first turning tool 31 and the second turning tool 32 are oppositely arranged and the tool edge inclination directions are opposite).
During turning, the second lathe tool 32 serving as a reverse lathe tool is fed first (i.e., the second lathe tool 32 having a tool edge inclined in a direction away from the spindle chuck 20 is fed first), the rough lathe feed is about 1.5mm, then the first lathe tool 31 serving as a forward lathe tool is fed (i.e., the first lathe tool 31 having a tool edge inclined in a direction toward the spindle chuck 20) and the finish lathe feed is about 1mm, and the two lathe tools simultaneously perform turning on the tool edge, so that the shape of the rod part is machined as shown in fig. 1.
After the machining is completed, the first lathe tool 31 and the second lathe tool 32 are retracted, the secondary shaft chuck 40 is loosened and moves towards the main shaft chuck 20 until the left side 3/1 of the finished blade bolt 11 is clamped, then the main shaft chuck 20 is loosened, the secondary shaft chuck 40 moves towards the right, the blade bolt 11 is sent to a discharging position, the blade bolt 11 is clamped by a spring clamp (not shown in the figure), and the blade bolt 11 is pulled out after the secondary shaft chuck 40 is loosened, so that the machining is completed.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. A processingequipment of blade bolt which characterized in that, it includes:
the spindle chuck is provided with a gap for the blade bolt blank to pass through in the axial direction, and a clamping part for clamping the blade bolt blank at the gap is arranged on the spindle chuck;
perpendicular to first lathe tool and the second lathe tool of axle direction, first lathe tool with second lathe tool is in opposite directions's setting to be in the perpendicular to do not coincide in the axle direction.
2. The blade bolt machining apparatus according to claim 1,
the tool edges of the first turning tool and the second turning tool are opposite in inclination direction.
3. The blade bolt machining apparatus according to claim 2,
the processing device of the blade bolt also comprises a secondary shaft chuck,
the secondary shaft chuck is also provided with a clamping member for clamping the blade bolt blank in the axial direction,
the first turning tool and the second turning tool are located between the main shaft chuck and the secondary shaft chuck.
4. The blade bolt machining apparatus according to claim 3,
the first blade is closer to the spindle chuck than the second blade,
the tool edge of the first turning tool inclines towards the spindle chuck.
5. The blade bolt machining apparatus according to claim 4,
the distance from the first turning tool to the main shaft chuck and the distance from the second turning tool to the main shaft chuck are smaller than the distance from the first turning tool to the second turning tool to the secondary shaft chuck.
6. The blade bolt machining apparatus according to claim 5,
the clamping parts of the main shaft chuck and the secondary shaft chuck have at least three contact points with the blade bolt blank when clamping.
7. The blade bolt machining apparatus according to claim 6,
the secondary axis chuck is configured to be movable in a direction parallel to the axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921109138.XU CN210305771U (en) | 2019-07-16 | 2019-07-16 | Blade bolt machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921109138.XU CN210305771U (en) | 2019-07-16 | 2019-07-16 | Blade bolt machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210305771U true CN210305771U (en) | 2020-04-14 |
Family
ID=70123356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921109138.XU Active CN210305771U (en) | 2019-07-16 | 2019-07-16 | Blade bolt machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210305771U (en) |
-
2019
- 2019-07-16 CN CN201921109138.XU patent/CN210305771U/en active Active
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