CN112496786A - Integrated tool for machining blade air film hole and manufacturing process thereof - Google Patents
Integrated tool for machining blade air film hole and manufacturing process thereof Download PDFInfo
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- CN112496786A CN112496786A CN202011278059.9A CN202011278059A CN112496786A CN 112496786 A CN112496786 A CN 112496786A CN 202011278059 A CN202011278059 A CN 202011278059A CN 112496786 A CN112496786 A CN 112496786A
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- pressing
- tooth
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- groove
- elastic deformation
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000003754 machining Methods 0.000 title claims description 15
- 238000003825 pressing Methods 0.000 claims abstract description 52
- 230000005489 elastic deformation Effects 0.000 claims abstract description 29
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003746 surface roughness Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses an integrated tool for processing a blade air film hole and a manufacturing process thereof, wherein the tool is of an integrated structure, a base is provided with a mounting surface, a front finding surface and a pressing surface, and a positioning tooth-shaped block and a pressing tooth-shaped block which are arranged on the upper end surface of the base form a tooth-shaped groove; the shape of the tooth-shaped groove is consistent with that of the part; the pressing tooth profile is provided with an elastic deformation groove a; the base is provided with a quick-change groove, and the repair block is arranged in the quick-change groove; an elastic deformation groove b is arranged beside the repair block, and a compression screw b is arranged on the side surface of the repair block for locking; the upper end face of the base is provided with a limiting pin for limiting the movement of the blade. The manufacturing process comprises the steps of blanking, turning an excircle, cutting a linear cutting outline a, cutting a linear cutting outline b, cutting a reference plane by slow-speed wire, cutting the tooth form of the tenon tooth by slow-speed wire, drilling a hole b, a hole c, reaming a, tapping c and d. The technical scheme of the invention avoids tolerance accumulation of multiple parts, thereby ensuring the main precision index of the clamp.
Description
Technical Field
The invention relates to the technical field of hollow blade air film hole machining, in particular to an integrated tool for machining a blade air film hole and a manufacturing process thereof.
Background
In order to enhance the cooling of the hollow blade, a plurality of rows of air discharge film holes are arranged on the blade, and the sizes and the angles of the air discharge film holes are different. A special punching tool is needed to be adopted to process on the electric spark machine tool.
Because the blade air film holes are distributed on the whole blade, the blade air film holes are large in quantity, large in angle and complex in spatial structure, and the position precision requirement of the air film holes is strict. Therefore, the precision of the punching tool directly influences the position precision of the air film hole machining. Usually, the small amount of punching tools is out of tolerance, and after space angle transformation, the deviation of the position degree of the air film hole can be multiplied.
The requirements of important precision indexes of the tool are as follows: the parallelism of the tooth-shaped block (each tooth) to the base (which can be detected by a standard measuring bar), the position of the tenon tooth center to the base, the spacing L1 between symmetrical tooth shapes, the dislocation L2 and the like (see figure 2).
The traditional punching tool adopts a split design method, and the components of the whole tool, including a base, a positioning seat, a pressing seat, a positioning toothed block, a pressing toothed block and the like, are of independent structures and are finally assembled and connected with each other through a connecting pin and a connecting screw (see figure 1).
Because the accumulated error of each component after assembly is larger, stricter requirements are put forward on the manufacturing precision of a single component and the assembly precision of each component. The tool is difficult to manufacture, long in manufacturing period, high in cost, poor in precision retentivity in the using process and high in repair rate (the tenon tooth is required to be shown in an attached figure 2).
Disclosure of Invention
In order to solve the technical problem, the integrated tool for machining the blade air film hole and the specific technical scheme of the manufacturing process are as follows:
an integrated tool for processing blade air film holes comprises a positioning toothed block, a base, a pressing toothed block, a central water inlet hole, a pressing surface, a mounting surface, a positioning surface, a limiting pin, a repair block and a quick-change groove;
the tool is of an integrated structure, the base is designed into a circular structure, the lower end face of the base is provided with a mounting face and a centering face, the mounting face is matched with a rotary worktable of a machine tool, and the outer circle surface of the base is the centering face and used for centering the center of the worktable so as to ensure that the center of the worktable is concentric with the center of the base;
the base is provided with a pressing surface, and the pressing surface is used for pressing the pressing plate;
the positioning tooth-shaped block and the pressing tooth-shaped block arranged on the upper end surface of the base form a tooth-shaped groove for positioning and clamping parts;
the shape of the tooth-shaped groove is consistent with that of a part, wherein the positioning tooth-shaped block on one side and the pressing tooth-shaped block on the other side are used for being in contact with and matched with the part, so that the surface roughness is less than or equal to 0.4 um; the pressing tooth profile is provided with an elastic deformation groove a, so that the pressing tooth profile can generate small elastic deformation when being pressed by a pressing force, and the side surface of the pressing tooth profile is locked by a pressing screw a and is used for pressing parts;
the center of the tooth-shaped groove is concentric with a central water inlet hole arranged on the base;
the mounting surface and the central water inlet hole are two set standards;
the base is provided with a quick-change groove which is designed into a T-shaped structure; the quick mounting device is used for quickly mounting a repairing block required by repairing an electrode after the motor is worn;
the repair block is arranged in the quick-change groove;
an elastic deformation groove b is formed beside the repair block, and a compression screw b is arranged on the side surface of the repair block for locking;
and the upper end surface of the base is provided with a limiting pin for limiting the movement of the blade.
The integral tool for processing the blade air film hole has the preferred scheme that the elastic deformation groove a is L-shaped, the width of the elastic deformation groove a is 0.5mm-1mm, and the distance between the elastic deformation groove a and the pressing tooth shape is 1.5mm-2 mm.
The integral tool for processing the blade air film hole has the preferred scheme that the elastic deformation groove b is in a straight shape, the width of the elastic deformation groove b is 0.5mm-1mm, and the distance between the elastic deformation groove b and a pressing surface is 1.5mm-2 mm.
The integral type frock for blade air film spot facing work, its preferred scheme is that the material of frock all adopts stainless steel.
The utility model provides an integral type frock for blade air film spot facing work, its preferred scheme does the surface roughness requirement on base excircle surface is less than or equal to 0.8 um.
A manufacturing process of an integrated tool for machining blade air film holes comprises the steps of blanking, turning an outer circle, cutting a linear cutting outline a, cutting an outline b, cutting a reference plane by slow-speed.
The invention has the beneficial effects that: the technical scheme of the invention solves the problems that the transmission tool can only eliminate the condition that the tolerance accumulation of a plurality of parts is greater than the requirement of the total dimensional tolerance through assembly, brings difficulty to the processing of on-site parts, cannot finish the processing of the air film hole of the whole blade at one time, and can only process a single-row air film hole; the integrated tool is ensured by the precision of equipment, so that the base, the positioning toothed block, the pressing toothed block and other parts of the transmission tool are concentrated on one part, and the tolerance accumulation of multiple parts is avoided, thereby avoiding the main precision index of the constant clamp.
In addition, the integrated tool has the advantages of simple design method, simple processing method, short processing period, high manufacturing precision, low manufacturing cost, good rigidity, good precision retentivity and the like; meanwhile, the cooling of the center hole is increased, the electrode correction block is convenient to mount, and the like. The manufacturing cost is reduced, the integral rigidity is better, the manufacturing precision is easier to guarantee, and the use stability is better.
Drawings
FIG. 1 is a conventional clamp configuration;
FIG. 2 is a schematic diagram of the main requirements of the tooth profile of the tenon tooth;
FIG. 3 is a structural diagram of an integrated tool of the present invention;
FIG. 4 is a structural diagram b of the integrated tool of the present invention;
FIG. 5 is a schematic view of a tool manufacturing process line cut profile a;
FIG. 6 is a schematic view of a tool manufacturing process line cutting profile b;
FIG. 7 is a schematic view of a datum plane of a tooling manufacturing process;
FIG. 8 is a schematic view of a profile of a tooth manufactured by the tooling manufacturing process;
fig. 9 is a schematic view of tooling manufacturing process hole machining.
In the figure, 1-blade 2-positioning toothed block, 3-base, 4-pressing toothed block, 5-pressing screw a, 6-elastic deformation groove a, 7-central water inlet, 8-pressing surface, 9-mounting surface, 10-alignment surface, 11-limiting pin, 12-repair block, 13-elastic deformation groove b, 14-pressing screw b, 15-quick-change groove, 16-hole a, 17-hole b, 18-hole c and 19-hole d.
Detailed Description
As shown in fig. 2-9, the integrated tool for machining the blade air film hole comprises a positioning toothed block 2, a base 3, a pressing toothed block 4, a central water inlet hole 7, a pressing surface 8, an installation surface 9, an alignment surface 10, a limiting pin 11, a repair block 12 and a quick-change groove 15;
the tool is of an integrated structure, the base 3 is designed to be of a circular structure, the lower end face of the base is provided with an installation face 9 and an alignment face 10, the installation face 9 is matched with a rotary worktable of a machine tool, and the outer circle surface of the base is an alignment face 8 which is used for aligning the center of the worktable and ensuring the center of the worktable to be concentric with the center of the base 3;
the base 3 is provided with a pressing surface, and the pressing surface 8 is used for pressing a pressing plate;
the positioning toothed block 2 and the pressing toothed block 4 arranged on the upper end face of the base 3 form a toothed groove for positioning and clamping parts;
the shape of the tooth-shaped groove is consistent with that of a part, wherein the positioning tooth-shaped block on one side and the pressing tooth-shaped block on the other side are used for being in contact with and matched with the part, so that the surface roughness is less than or equal to 0.4 um; the compression tooth-shaped block 4 is provided with an elastic deformation groove a6, the compression tooth-shaped groove can generate slight elastic deformation when being pressed, and the side surface is locked by a compression screw a5 and is used for compressing the blade 1;
the center of the tooth-shaped groove is concentric with a central water inlet hole 7 arranged on the base 3;
the mounting surface 9 and the central water inlet hole 7 are two set references;
the base 3 is provided with a quick-change groove 15, and the quick-change groove 15 is designed into a T-shaped structure; the quick installation of the repair block 12 required for repairing the electrode after the motor is worn;
the repair block 12 is arranged in the quick-change groove 15;
an elastic deformation groove b13 is formed beside the repair block 12, and the side surface of the repair block is locked by a compression screw b 14;
the upper end face of the base 3 is provided with a limit pin 12 for limiting the movement of the blade 1.
The elastic deformation groove a6 is L-shaped, the width of the elastic deformation groove a6 is 0.5mm-1mm, and the distance between the elastic deformation groove a6 and the pressing tooth shape is 1.5mm-2 mm.
The elastic deformation groove b13 is in a straight line shape, the width of the elastic deformation groove b13 is 0.5mm-1mm, and the distance between the elastic deformation groove b13 and the pressing surface is 1.5mm-2 mm.
The tool is made of stainless steel.
The surface roughness requirement of the outer circle surface of the base 3 is less than or equal to 0.8 um.
A manufacturing process of an integrated tool for machining blade air film holes comprises the steps of blanking, turning an outer circle, cutting a linear cutting outline a, cutting an outline b, cutting a reference plane by slow-speed wire, cutting tooth shapes of tenon teeth by slow-speed wire, drilling a16, a b17, a c18, a d19, reaming a, tapping c and tapping d.
Claims (6)
1. An integrated tool for processing a blade air film hole is characterized by comprising a positioning toothed block, a base, a pressing toothed block, a central water inlet hole, a pressing surface, an installation surface, a front alignment surface, a limiting pin, a repair block and a quick-change groove;
the tool is of an integrated structure, the base is designed into a circular structure, the lower end face of the base is provided with a mounting face and a centering face, the mounting face is matched with a rotary worktable of a machine tool, and the outer circle surface of the base is the centering face and used for centering the center of the worktable so as to ensure that the center of the worktable is concentric with the center of the base;
the base is provided with a pressing surface, and the pressing surface is used for pressing the pressing plate;
the positioning tooth-shaped block and the pressing tooth-shaped block arranged on the upper end surface of the base form a tooth-shaped groove for positioning and clamping parts;
the shape of the tooth-shaped groove is consistent with that of a part, wherein the positioning tooth-shaped block on one side and the pressing tooth-shaped block on the other side are used for being in contact with and matched with the part, so that the surface roughness is less than or equal to 0.4 um;
the pressing tooth profile is provided with an elastic deformation groove a, so that the pressing tooth profile can generate small elastic deformation when being pressed by a pressing force, and the side surface of the pressing tooth profile is locked by a pressing screw a and is used for pressing parts;
the center of the tooth-shaped groove is concentric with a central water inlet hole arranged on the base;
the mounting surface and the central water inlet hole are two set standards;
the base is provided with a quick-change groove which is designed into a T-shaped structure; the quick mounting device is used for quickly mounting a repairing block required by repairing an electrode after the motor is worn;
the repair block is arranged in the quick-change groove;
an elastic deformation groove b is formed beside the repair block, and a compression screw b is arranged on the side surface of the repair block for locking;
and the upper end surface of the base is provided with a limiting pin for limiting the movement of the blade.
2. The integrated tool for blade air film hole machining according to claim 1, wherein the elastic deformation groove a is L-shaped, the width of the elastic deformation groove a is 0.5mm-1mm, and the distance between the elastic deformation groove a and the pressing tooth shape is 1.5mm-2 mm.
3. The integrated tool for blade air film hole machining according to claim 1, wherein the elastic deformation groove b is in a straight shape, the width of the elastic deformation groove b is 0.5mm-1mm, and the distance between the elastic deformation groove b and a pressing surface is 1.5mm-2 mm.
4. The integrated tool for blade air film hole machining according to claim 1, wherein the tool is made of stainless steel.
5. The integrated tool for machining the blade air film hole is characterized in that the surface roughness of the outer circle surface of the base is not more than 0.8 um.
6. The manufacturing process of the integrated tool for blade air film hole machining according to claim 1 is characterized by comprising blanking, turning, linear cutting profile a, linear cutting profile b, slow-speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278059.9A CN112496786A (en) | 2020-11-16 | 2020-11-16 | Integrated tool for machining blade air film hole and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278059.9A CN112496786A (en) | 2020-11-16 | 2020-11-16 | Integrated tool for machining blade air film hole and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112496786A true CN112496786A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011278059.9A Pending CN112496786A (en) | 2020-11-16 | 2020-11-16 | Integrated tool for machining blade air film hole and manufacturing process thereof |
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| CN (1) | CN112496786A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226898A (en) * | 2022-02-24 | 2022-03-25 | 成都和鸿科技股份有限公司 | Method for determining hole site of air film hole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201215624D0 (en) * | 2012-09-03 | 2012-10-17 | Rolls Royce Plc | Machining process adn apparatus for machining |
| CN103611995A (en) * | 2013-11-19 | 2014-03-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Rapid precise positioning device and method of blade |
| CN106624897A (en) * | 2016-12-28 | 2017-05-10 | 无锡透平叶片有限公司 | Rotary machining fixture for small and medium-sized square steel tenon-tooth-shaped root blades |
| CN210649637U (en) * | 2019-10-19 | 2020-06-02 | 山东隆基步德威制动钳有限公司 | Quick-change positioning plate for machine tool |
| CN111390582A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Device for enhancing cooling effect of blade |
-
2020
- 2020-11-16 CN CN202011278059.9A patent/CN112496786A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201215624D0 (en) * | 2012-09-03 | 2012-10-17 | Rolls Royce Plc | Machining process adn apparatus for machining |
| CN103611995A (en) * | 2013-11-19 | 2014-03-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Rapid precise positioning device and method of blade |
| CN106624897A (en) * | 2016-12-28 | 2017-05-10 | 无锡透平叶片有限公司 | Rotary machining fixture for small and medium-sized square steel tenon-tooth-shaped root blades |
| CN210649637U (en) * | 2019-10-19 | 2020-06-02 | 山东隆基步德威制动钳有限公司 | Quick-change positioning plate for machine tool |
| CN111390582A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Device for enhancing cooling effect of blade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226898A (en) * | 2022-02-24 | 2022-03-25 | 成都和鸿科技股份有限公司 | Method for determining hole site of air film hole |
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| PB01 | Publication | ||
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Application publication date: 20210316 |