CN211218738U - Special clamp for finish machining of turbine shaft - Google Patents
Special clamp for finish machining of turbine shaft Download PDFInfo
- Publication number
- CN211218738U CN211218738U CN201922194496.1U CN201922194496U CN211218738U CN 211218738 U CN211218738 U CN 211218738U CN 201922194496 U CN201922194496 U CN 201922194496U CN 211218738 U CN211218738 U CN 211218738U
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- turbine shaft
- jaw chuck
- chassis
- finish machining
- plate
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Abstract
The utility model relates to an anchor clamps technical field, specific turbine shaft finish machining special fixture that says so, including three-jaw chuck and bottom plate, three-jaw chuck is installed through the gear box to the one end of bottom plate, the equal welded fastening of chucking end of every jack catch of three-jaw chuck has the cardboard, the inside driving-disc bottom of three-jaw chuck is fixed with a plurality of dead levers, in the tip of dead lever stretched into the locating hole, upper portion sliding connection apical ring in the locating hole, there is the chassis, every lower part through threaded connection in the locating hole the end fixing of dead lever has the activity to run through the pilot pin on chassis. The utility model discloses can promote the tip of turbine shaft when the three-jaw chuck tightens up for disc on the turbine shaft is hugged closely with the locating plate, has guaranteed that the turbine shaft is perpendicular with the three-jaw chuck, and under the clamp of locating plate is tight, makes the turbine shaft can coincide with the axis of rotation lead, has improved the fixed precision of turbine shaft greatly, is favorable to improving the turbine shaft finish machining quality.
Description
Technical Field
The utility model belongs to the technical field of fixture device, concretely relates to turbine shaft finish machining special fixture.
Background
The positioning precision of the turbine shaft directly influences the processing quality of the turbine. One end of the turbine shaft is usually fixed perpendicular to a disc which acts as a carrier for the turbine blades and which carries them. When the turbine shaft is positioned, the conventional method usually uses a three-jaw chuck to position, the conventional three-jaw chuck positions a regular cylindrical object with a circular cross section more accurately, but for the turbine shaft, the end part of the turbine shaft consists of turbine blades and has a complex shape, when the three-jaw chuck is used for direct fixation, although one end with the turbine blades can be fixed on the center of the three-jaw chuck, due to the difference of welding processes, small difference exists between each turbine blade at the end part of the turbine shaft, and if the end part of the turbine shaft is directly clamped, the verticality between the turbine shaft and the three-jaw chuck cannot be guaranteed, and the positioning precision of the turbine shaft is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a turbine shaft finish machining special fixture to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a finish machining special fixture of turbine shaft, includes three-jaw chuck and bottom plate, the three-jaw chuck is installed through the gear box to the one end of bottom plate, the centre of a circle department of three-jaw chuck is equipped with the locating hole, the equal welded fastening of chucking end of every jack catch of three-jaw chuck has the cardboard, the inside driving-disc bottom of three-jaw chuck is fixed with a plurality of dead levers, the tip of dead lever stretches into in the locating hole, upper portion sliding connection apical ring in the locating hole, there is the chassis, every through threaded connection in the lower part of locating hole the end fixing of dead lever has the activity to run through the guide pin on chassis, the other end horizontal mounting of bottom plate has the pneumatic cylinder, the output of pneumatic cylinder is fixed with the bearing frame, install the apical cone in the bearing frame, support between three.
As a further optimization of the technical scheme, the clamping plate comprises a vertical plate and a positioning plate, and the vertical plate and the positioning plate are perpendicular to each other.
As a further optimization of the technical scheme, a spring is further arranged in the positioning hole, the top end of the spring is tightly abutted to the lower surface of the top ring, and the bottom end of the spring is tightly abutted to the upper surface of the chassis.
As a further optimization of the technical scheme, the periphery of the chassis is provided with threads, the chassis is provided with guide holes, and the guide pins slide through the guide holes.
The utility model discloses a technological effect and advantage:
the utility model discloses can promote the tip of turbine shaft when the three-jaw chuck tightens up for disc on the turbine shaft is hugged closely with the locating plate, has guaranteed that the turbine shaft is perpendicular with the three-jaw chuck, and under the clamp of locating plate is tight, makes the turbine shaft can coincide with the axis of rotation lead, has improved the fixed precision of turbine shaft greatly, is favorable to improving the turbine shaft finish machining quality.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the front side of the three-jaw chuck of the present invention;
fig. 3 is a schematic view of the internal structure of the three-jaw chuck of the present invention;
fig. 4 is an enlarged schematic structural view of a portion a in fig. 3 according to the present invention;
FIG. 5 is a schematic view of the structure of the chassis of the present invention;
fig. 6 is a schematic view of the bottom view of the clamping plate of the present invention.
In the figure: 1 three-jaw chuck, 101 jaws, 102 positioning holes, 103 fixing rods, 104 driving disks, 2 turbine shafts, 3 tip cones, 4 bearing seats, 5 hydraulic cylinders, 6 bottom plates, 7 clamping plates, 701 vertical plates, 702 positioning plates, 8 springs, 9 guide pins, 10 chassis, 1001 guide holes and 11 top rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-6, a special fixture for finish machining of a turbine shaft comprises a three-jaw chuck 1 and a bottom plate 6, one end of the bottom plate 6 is provided with a three-jaw chuck 1 through a gear box, the circle center of the three-jaw chuck 1 is provided with a positioning hole 102, the clamping plate 7 is fixedly welded at the clamping end of each clamping jaw 101 of the three-jaw chuck 1, the clamping plate 7 comprises a vertical plate 701 and a positioning plate 702, the vertical plate 701 and the positioning plate 702 are mutually vertical, the vertical plate 701 is arranged in an arc shape, when the jaws 101 of the three-jaw chuck 1 are tightened, avoiding contact with the turbine blade parts, the positioning plate 702 serves to position the disk surface on the side of the turbine blade, so that the surface of the disc is tightly attached to the positioning plate 702, a positioning bayonet is further arranged on one side of the positioning plate 702 close to the circle center, the clamping device is used for clamping the shaft part of the turbine shaft 2, so that the turbine shaft 2 is vertically fixed at the center of the three-jaw chuck 1.
The bottom of a driving disc 104 in the three-jaw chuck 1 is fixed with a plurality of fixing rods 103, the end portions of the fixing rods 103 extend into a positioning hole 102, the upper portion in the positioning hole 102 is connected with a top ring 11 in a sliding mode, the lower portion in the positioning hole 102 is connected with a base plate 10 through threads, threads are arranged on the periphery of the base plate 10 and used for being matched with the threads on the inner wall of the positioning hole 102, when the base plate 10 is driven to rotate, the base plate 10 can move up and down through the threads, a spring 8 is further arranged in the positioning hole 102, the top end of the spring 8 is tightly abutted to the lower surface of the top ring 11, the bottom end of the spring 8 is tightly abutted to the upper surface of the base plate 10, the top ring 11 is pushed through the spring 8, the turbine shaft 2 is pushed to.
The end of each fixing rod 103 is fixed with a guide pin 9 movably penetrating through the chassis 10, the chassis 10 is provided with a guide hole 1001, the guide pin 9 slides through the guide hole 1001, when the fixing rod 103 rotates with the driving disk 104, the chassis 10 can be driven to rotate by the guide pin 9, and the guide pin 9 penetrates through the guide hole 1001 in a sliding manner, so that the driving disk 104 can slide up and down relative to the guide pin 9.
The other end horizontal installation of bottom plate 6 has pneumatic cylinder 5, the output of pneumatic cylinder 5 is fixed with bearing frame 4, install tip cone 3 in the bearing frame 4, support tightly between three-jaw chuck 1 and the tip cone 3 and wait to process turbine shaft 2.
Specifically, when the clamping plate is used, the shaft end part of one end of a turbine of the turbine shaft 2 to be processed is inserted into the positioning hole 102 of the three-jaw chuck 1 for rough positioning, at the moment, the chassis 10 is positioned at the bottom in the positioning hole 102 and does not act on the spring 8, therefore, the end part insertion of the turbine shaft 2 is not influenced, after the turbine shaft 2 is inserted, the clamping jaws 101 are contracted by the rotation of the driving disc 104, the fixing rod 103 synchronously rotates along with the rotation of the driving disc 104, the chassis 10 in the positioning hole 102 is driven to rotate, the chassis 10 moves outwards, the spring 8 is gradually extruded and pushed, the top ring 11 extends outwards, the turbine blade part of the turbine shaft 2 is abutted by the top ring 11, at the moment, the positioning plate 702 of the clamping plate 7 blocks the disc on the turbine shaft 2, the clamping jaws 101 continue to be contracted along with the rotation of the driving, promote turbine shaft 2 and make disc and locating plate 702 support tightly, guarantee that turbine shaft 2 is perpendicular with three-jaw chuck 1, along with the shrink of jack catch 101, utilize locating plate 702 to press from both sides tight fixedly to the axial region of turbine shaft 2, can guarantee that turbine shaft 2 is located the axis, later start hydraulic cylinder 5, utilize tip cone 3 to support tightly the locating hole of turbine shaft 2 tip, accomplish the installation of turbine shaft 2.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (4)
1. The utility model provides a finish machining special fixture of turbine shaft, includes three-jaw chuck (1) and bottom plate (6), its characterized in that: the three-jaw chuck (1) is installed at one end of the bottom plate (6) through a gear box, a positioning hole (102) is formed in the circle center of the three-jaw chuck (1), a clamping plate (7) is welded and fixed to the clamping end of each clamping jaw (101) of the three-jaw chuck (1), a plurality of fixing rods (103) are fixed to the bottom of a driving disc (104) inside the three-jaw chuck (1), the end portions of the fixing rods (103) extend into the positioning hole (102), a top ring (11) is slidably connected to the inner upper portion of the positioning hole (102), a chassis (10) is connected to the inner lower portion of the positioning hole (102) through threads, a guide pin (9) movably penetrating through the chassis (10) is fixed to the end portion of each fixing rod (103), a hydraulic cylinder (5) is horizontally installed at the other end of the bottom plate (6), a bearing seat (4) is fixed to the output end of the hydraulic cylinder, the turbine shaft (2) to be processed is tightly propped between the three-jaw chuck (1) and the tip cone (3).
2. The special fixture for finish machining of the turbine shaft of claim 1, wherein: cardboard (7) include riser (701) and locating plate (702), and riser (701) and locating plate (702) mutually perpendicular.
3. The special fixture for finish machining of the turbine shaft of claim 1, wherein: the positioning structure is characterized in that a spring (8) is further arranged in the positioning hole (102), the top end of the spring (8) is tightly abutted to the lower surface of the top ring (11), and the bottom end of the spring (8) is tightly abutted to the upper surface of the chassis (10).
4. The special fixture for finish machining of the turbine shaft of claim 1, wherein: the periphery of the chassis (10) is provided with threads, the chassis (10) is provided with a guide hole (1001), and the guide pin (9) penetrates through the guide hole (1001) in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194496.1U CN211218738U (en) | 2019-12-10 | 2019-12-10 | Special clamp for finish machining of turbine shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194496.1U CN211218738U (en) | 2019-12-10 | 2019-12-10 | Special clamp for finish machining of turbine shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211218738U true CN211218738U (en) | 2020-08-11 |
Family
ID=71941007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922194496.1U Active CN211218738U (en) | 2019-12-10 | 2019-12-10 | Special clamp for finish machining of turbine shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211218738U (en) |
-
2019
- 2019-12-10 CN CN201922194496.1U patent/CN211218738U/en active Active
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