CN217166850U - Processing frock of conical surface groove in gas turbine swirler - Google Patents
Processing frock of conical surface groove in gas turbine swirler Download PDFInfo
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- CN217166850U CN217166850U CN202123245685.0U CN202123245685U CN217166850U CN 217166850 U CN217166850 U CN 217166850U CN 202123245685 U CN202123245685 U CN 202123245685U CN 217166850 U CN217166850 U CN 217166850U
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Abstract
The processing tool for the inner conical surface groove of the gas turbine swirler comprises a base, wherein a hole is formed in the center of the base, a plane with an inclination angle is formed in the upper plane of the base, the inclination angle is equal to the angle between the inner conical surface of a swirler bell mouth and an axis, an equal-height block is installed on the base, the height of the equal-height block is equal to that of the swirler, and the equal-height block is fixed on the base; the cyclone separator is characterized by also comprising a positioning plate, wherein the positioning plate is fixed on the upper surface of the equal-height block through a pin shaft and clamps and fixes the cyclone between the lower surface of the positioning plate and the base; the diameter of the cyclone is communicated with a hole arranged in the center of the base and is used for penetrating through the molybdenum wire, and the lower plane of the base is fixed with a workbench of a linear cutting machine.
Description
Technical Field
The utility model relates to a frock clamp of complicated gas turbine part of common machine tool processing engine. In particular to a linear cutting processing tool for a groove on an inner conical surface of a gas turbine swirler.
Background
The gas turbine (especially for the gas turbine of gas turbine) part swirler has the appearance of a horn mouth, the horn mouth that has the slope, the bore of horn mouth is little, need process a plurality of circular arc grooves on the internal conical surface (hole) of horn mouth, the circular arc groove of gas turbine part swirler hole belongs to difficult processing position, and non-common machine tool can process the completion, former scheme is through digit control machine tool five-axis machining, the process time is longer, the processing cost is higher, low efficiency, and there is the condition of clamping difficulty, be not suitable for batch production processing, because can only use thin cutter arbor and cutter.
The wheel groove body processing technology provided by CN201810529428.3 comprises the following processing steps: the first step is as follows: preparing materials, namely preparing 45 steel with a square structure, and placing a margin of 0.2mm on a single side of the steel; the second step is that: quenching and tempering; the third step: the wire is quickly moved, the square structure is cut into a trapezoidal structure, the allowance of 0.2mm is reserved for the rough cutting angle and the step, and the allowance of 1mm is reserved for the wheel groove part; the fourth step: placing the steel wire on a milling machine, and drilling a wire through hole and a thread hole; the fifth step: tapping, namely tapping the threaded hole; and a sixth step: performing plane grinding, namely finely grinding the appearance, the steps and the thickness in place according to a drawing; the seventh step: slowly moving the wire, cutting a push block at the wheel groove part through the slowly moving wire, and aligning a reference plane to finish the wheel groove part; meanwhile, an inclined hole is processed at the top of the wheel groove body through the slow wire; eighth step: processing an inclined plane, wherein the included angle between the inclined plane and the horizontal plane is 45 degrees; and finishing quality inspection. The processing is simple and convenient, the processed surface is smooth, and the technical requirements are met. However, the clamping is not easy, the process steps are complicated, the efficiency is not high, and the precision can not meet the higher requirement.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a machining tool for machining the upper groove of the inner conical surface of the horn mouth of the gas turbine swirler by using a common machine tool (wire-electrode cutting, especially the slow-moving wire-electrode cutting with higher precision), which is a special fixture, and can machine the arc groove of the inner conical surface (hole) of the gas turbine component swirler by using a common wire-electrode cutting machine with lower machining cost, and is suitable for batch machining of the gas turbine components, thereby greatly saving the machining period and the machining cost. Especially the utility model discloses have high machining precision, not only walk the precision height of wire cutting slowly, can reach the precision within 10 microns.
The technical scheme of the utility model is that the processing tool for the upper groove of the inner conical surface of the gas turbine swirler comprises a base, a hole is arranged in the center of the base, the plane of an inclination angle is arranged on the upper plane of the base, the inclination angle is equal to the angle between the inner conical surface of the swirler bell mouth and the axis, an equal-height block is arranged on the base, the height of the equal-height block is equal to the height of the swirler, and the equal-height block is fixed on the base 1; the cyclone separator is characterized by also comprising a positioning plate, wherein the positioning plate is fixed on the upper surface of the equal-height block through a pin shaft and clamps and fixes the cyclone between the lower surface of the positioning plate and the base; the diameter of the cyclone is communicated with a hole arranged in the center and used for penetrating through the molybdenum wire, and the lower plane of the base is fixed with a workbench of a linear cutting machine.
The machining method for the upper groove of the inner conical surface of the gas turbine swirler by using the tool is based on the tool and comprises a base 1, wherein a hole is formed in the center of the base, the upper plane of the base 1 is simultaneously provided with an inclination angle, the inclination angle is equal to the angle between the inner conical surface of a swirler bell mouth and an axis, an equal-height block 2 is installed on the base 1, the height of the equal-height block is equal to the height of the swirler, and the equal-height block 2 is fixed on the base 1; the cyclone separator is characterized by further comprising a positioning plate 3, wherein the positioning plate 3 is fixed on the upper surface of the equal-height block 2 through a pin shaft 4, and clamps and fixes the cyclone separator between the lower surface of the positioning plate and the base; the aperture of the swirler is communicated with the central hole and is used for penetrating through the molybdenum wire, the working window of the inner conical surface of the swirler horn mouth, namely the working surface of the linear cutting is the highest point of the upper plane of the base 1, and the lower plane of the base is fixed with the workbench of the linear cutting machine; the shape of the groove of the molybdenum wire on the inner conical surface of the horn mouth of the cyclone is determined by the movement of a workbench of the control wire cutting machine when the molybdenum wire starts to work.
The central hole of the base 1 is symmetrical with the centers of the two side surfaces of the base 1, so that the base can be conveniently positioned and centered on a machine tool platform, the working track of the machine tool platform is easy to program, and by adopting the technical scheme, the two side surfaces of the base 1 can be used for centering and aligning; the lower surface of the base 1 is provided with a central circular hole (namely, a concave step, an inner hole is arranged in the concave step, a bottom plane of a gas turbine swirler component is arranged in the concave step, and the bottom plane of the swirler component and the inner hole step of the base 1 have a fit relation of a small gap;
the equal-height block 2 is connected with the base 1 in a welding mode, a gas turbine swirler component is arranged in a central circular hole of the base 1, the positioning plate 3 is fixed on the upper plane of the equal-height block 2 through a pin shaft 4, a perforation of a diamond pin is arranged on the positioning plate 3, the perforation where the diamond pin 5 is located has a relative position requirement with an inner hole circular arc groove to be processed, the positioning plate 4 fixes the gas turbine component and the base 1 through the diamond pin 5, and the processing position of the inner hole circular arc groove of the gas turbine component is fixed and accurate by adopting the technical scheme.
When the inner hole arc groove of the gas turbine swirler part forms an angle of 6 +/-4 degrees with the vertical direction, the center of the base is provided with a hole, the upper plane of the base 1 is simultaneously provided with an inclination angle of 6 +/-4 degrees, and the arc groove of the conical inner arc to be processed in the inner hole of the gas turbine and a molybdenum wire of the wire cutting machine are positioned in the same vertical straight line direction; (figure 1), especially the linear cutting machine adopting the slow wire has higher precision.
After the groove of the conical surface inner arc to be processed in the inner hole of the gas turbine swirler is processed, the swirler fixing piece is loosened, the workpiece is rotated by an angle to enable the position of the groove to be processed to be parallel to the highest point of the upper plane of the base 1 of the linear cutting working surface, and the groove is processed next processing groove in parallel to the processing molybdenum wire.
The gas turbine swirler component is fixed on the positioning plate and the base 1 through a diamond pin 5.
One end of the gas turbine swirler component is provided with a pin hole, the pin hole and an inner hole arc groove to be processed have a relative angle relationship, and the gas turbine component is fixed on the base 1 by inserting a diamond pin 5 into the pin hole; the arc groove of the inner edge of the inner hole of the gas turbine component belongs to a part which is difficult to machine and can be machined by an ordinary machine tool, the original machining scheme is that the arc groove is machined by a five-axis numerical control machine tool, the machining time is long, the machining cost is high, and the situation of difficult clamping exists. After the device is used, the inner hole arc groove of the gas turbine swirler component can be machined by a common linear cutting machine, and the clamp is low in manufacturing cost and easy to operate, is suitable for batch machining of the gas turbine swirler component, and greatly saves the machining period and the machining cost. The molybdenum wire that prior art scheme need pass through wire cutting looks for X axle, Y axle reference center at the workpiece surface tool setting, can produce the spark when the molybdenum wire touches the work piece, causes many irreversible scars to the work piece, the utility model provides a problem in the wire cutting branch, the side tool setting of base can alignment part center promptly to the side of frock reference. The accuracy of the base can be made high.
Compared with the prior art the utility model discloses following beneficial effect has: the utility model provides a dedicated frock clamp of complicated gas turbine swirler part of ordinary wire cut electrical discharge machining bed processing, and can be through the lower wire cut electrical discharge machining equipment of processing cost, the arc groove of processing gas turbine swirler part hole (rotate swirler work piece to the face that an accurate angle made the processing groove and the groove that can conveniently process a plurality of arc groove or other shapes on a straight line with the molybdenum filament), the precision reaches 10 microns or higher, and be applicable to gas turbine part batch processing, processing cycle and processing cost have been practiced thrift greatly.
The gas turbine part swirler is an important part, and five are adopted in processing before, and efficiency is not high, the utility model is suitable for a gas turbine part batch processing just has high efficiency, can practice thrift processing cycle and processing cost greatly. Especially the utility model discloses have high machining precision, not only walk the precision height of wire cutting slowly, can reach the precision within 10 microns, high precision can be guaranteed for the angle of inclination of the interior conical surface of horn mouth moreover, can be for in fact 5-30 (the embodiment of the utility model provides a 6, conical surface angle be with the axis contained angle one time 12 degree the higher tolerance of homoenergetic assurance, can be positive and negative 0.05 degree even higher for the interior conical surface angle of whole horn mouth.
The arc groove of the inner hole of the gas turbine component is machined (the swirler workpiece is rotated to an accurate angle, so that the surface of the machined groove and the molybdenum wire can be conveniently machined into a plurality of arc grooves or grooves with other shapes on the same straight line), the precision reaches within 10 micrometers or higher, and the arc groove machining method is suitable for batch machining of the gas turbine component, and greatly saves the machining period and the machining cost.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a gas turbine component according to the present invention;
fig. 3 is a top view of fig. 1.
Detailed Description
As shown in the figure, the action fixture for processing complex gas turbine components by a common wire cutting machine comprises a base 1, wherein the base 1 is provided with an equal-height block 2, the equal-height block 2 is fixed on the base 1 in a welding mode, a circular inner hole step is arranged in the center of the base 1, the bottom of the gas turbine component is in clearance fit with the inner hole step of the base 1, and the action fixture further comprises a positioning plate 3, and the positioning plate 3 is fixed on the equal-height block 2 through a pin shaft 4; one end of the gas turbine component is provided with a pin hole, the pin hole and an inner hole arc groove to be processed have relative angle relation, and the gas turbine component is fixed on the base 1 by inserting a diamond pin 5 into the pin hole; the perforation that diamond pin 5 place has relative position requirement (be convenient for atress and fixed) with the hole circular arc groove that needs processing, and locating plate 4 passes through diamond pin 5, and is fixed gas turbine part and base 1, through adopting above-mentioned technical scheme, confirms that 6 hole circular arc groove processing positions of gas turbine part (the highest point of base) are fixed and accurate.
The inner hole of the base 1 is centrosymmetric with the two side surfaces of the base 1, the horizontal projection shape of the base is square by adopting the technical scheme, four side surfaces of the base 1 are vertical to a horizontal plane, at least two side surfaces are finely ground, the precision is 5 microns, a concave circle is processed on the upper surface of the base 1, namely the center of the inclined plane, and the aperture of the concave circle is tightly matched with and used for accommodating a gas turbine component; the depth of the concave circle is more than 1mm and not more than 5mm, two side surfaces of the base 1 are used for centering and aligning, and the position of a machining groove of a gas turbine component is marked by 7.
The gas turbine swirler is provided with a pin hole, and a diamond pin is inserted into the hole and the pin hole on the positioning plate to fix the positioning plate base and the gas turbine swirler.
The upper plane of the base 1 is provided with a plane with an inclination angle which is equal to the angle between the inner conical surface of the horn mouth of the cyclone and the axis, the base 1 is provided with an equal-height block 2, the height of the equal-height block is equal to the height of the cyclone, and the equal-height block 2 is fixed on the base 1; the cyclone separator is characterized by further comprising a positioning plate 3, wherein the positioning plate 3 is fixed on the upper surface of the equal-height block 2 through a pin shaft 4, and clamps and fixes the cyclone separator between the lower surface of the positioning plate and the base; the hole diameter of the cyclone is communicated with the hole arranged in the center and used for penetrating through the molybdenum wire, and the lower plane of the base is fixed with a workbench of a linear cutting machine.
After the groove of the conical surface inner arc to be processed in the inner hole of the gas turbine swirler is processed, the fixed swirler fixing piece is loosened, the workpiece is rotated by an angle to enable the position of the groove to be processed to be parallel to the highest point of the upper plane of the base of the linear cutting working surface, and the next processing groove is processed in parallel to the processing molybdenum wire.
The inner hole arc groove of the gas turbine component belongs to a part difficult to machine and can be machined by an ordinary machine tool, the original machining scheme is that the arc groove is machined by a five-axis numerical control machine tool, the machining time is long, the machining cost is high, and the situation of difficult clamping exists. After the device is used, the inner hole arc groove of the gas turbine component can be machined by a common linear cutting machine, and the clamp is low in manufacturing cost and easy to operate, is suitable for batch machining of the gas turbine component, and greatly saves the machining period and the machining cost.
The contour block 2 (only one cushion block) is connected with the base 1 in a welding mode, the gas turbine component is installed in a central circular hole of the base 1, the positioning plate 3 is fixed on the upper plane of the contour block 2 through a pin shaft 4, the hole where the diamond-shaped pin 5 is located and an inner hole circular arc groove to be machined have a relative position requirement of 40%, the positioning plate 4 fixes the gas turbine component and the base 1 through the diamond-shaped pin 5, and the machining position of the inner hole circular arc groove of the gas turbine component is determined by adopting the technical scheme. (FIGS. 1-3). In the highest position of the left side edge of the gas turbine swirler part in fig. 2, the inclined inner conical surface is perpendicular to the horizontal line.
Claims (3)
1. The processing tool for the inner conical surface groove of the gas turbine swirler is characterized by comprising a base, wherein a hole is formed in the center of the base, a plane with an inclination angle is formed in the upper plane of the base, the inclination angle is equal to the angle between the inner conical surface of a swirler bell mouth and an axis, an equal-height block is installed on the base, the height of the equal-height block is equal to that of the swirler, and the equal-height block is fixed on the base; the cyclone separator is characterized by also comprising a positioning plate, wherein the positioning plate is fixed on the upper surface of the equal-height block through a pin shaft and clamps and fixes the cyclone between the lower surface of the positioning plate and the base; the diameter of the cyclone is communicated with a hole arranged in the center of the base and is used for penetrating through the molybdenum wire, and the lower plane of the base is fixed with a workbench of a linear cutting machine.
2. The tooling for machining the inner conical surface groove of the gas turbine swirler as claimed in claim 1, wherein the horizontal projection of the base is square, four sides of the base are vertical to the horizontal plane, at least two sides of the base are finely ground with the precision of 5 microns, a vertical concave circle is machined in the center of the inclined plane on the upper surface of the base, and the pore diameter of the concave circle is tightly matched to accommodate a gas turbine component; the depth of the concave circle is more than 1mm and not more than 5 mm.
3. The tooling for machining the tapered slot in a gas turbine swirler as recited in claim 1, wherein the gas turbine swirler has a pin hole, and a diamond pin is inserted into the hole and the pin hole of the positioning plate to fix the positioning plate to the gas turbine swirler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123245685.0U CN217166850U (en) | 2021-12-22 | 2021-12-22 | Processing frock of conical surface groove in gas turbine swirler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123245685.0U CN217166850U (en) | 2021-12-22 | 2021-12-22 | Processing frock of conical surface groove in gas turbine swirler |
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| CN217166850U true CN217166850U (en) | 2022-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850597A (en) * | 2021-12-22 | 2022-08-05 | 无锡市润和机械有限公司 | Method for machining inner conical surface groove of gas turbine swirler |
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- 2021-12-22 CN CN202123245685.0U patent/CN217166850U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850597A (en) * | 2021-12-22 | 2022-08-05 | 无锡市润和机械有限公司 | Method for machining inner conical surface groove of gas turbine swirler |
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