CN114918632A - Device and method for machining blade arc mounting plate - Google Patents
Device and method for machining blade arc mounting plate Download PDFInfo
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- CN114918632A CN114918632A CN202210711927.0A CN202210711927A CN114918632A CN 114918632 A CN114918632 A CN 114918632A CN 202210711927 A CN202210711927 A CN 202210711927A CN 114918632 A CN114918632 A CN 114918632A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/02—Milling surfaces of revolution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2215/00—Details of workpieces
- B23C2215/04—Aircraft components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/60—Roughing
- B23C2220/605—Roughing and finishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
- B23C2270/08—Clamping mechanisms or provision for clamping
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- 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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- 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
- B23Q2703/12—Accessories for attaching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a device and a method for processing a blade arc mounting plate, wherein the device comprises a base, a positioning seat, a pressing plate, a pressing block, a workpiece positioning pin and a clamp positioning pin, wherein the positioning seat is connected to the upper end surface of the base and comprises a right-angle surface vertical to the upper end surface of the base; the first end of the pressing plate is rotatably connected with the positioning seat, the second end of the pressing plate is detachably connected with the positioning seat, and a clamping space is formed between the pressing plate and the right-angle surface of the positioning seat; the compact heap can be dismantled and connect on the pressure strip and be located the centre gripping space. When the device is used for milling the blade arc mounting plate, the coordinate system is firstly aligned by the alignment standard component, then formal processing is carried out, and milling cutters with different diameters are selected for processing when the four sides, the outer arc and the inner arc of the mounting plate are milled. The invention reduces the risk of scrapping the blades in batches, improves the processing efficiency, and has the advantages of simple structure, simple clamping, convenient alignment and greatly reduced device cost.
Description
Technical Field
The invention relates to a device and a method for milling an aircraft engine blade, in particular to a device and a method for milling a circular arc mounting plate of a rectifier blade, and belongs to the technical field of aircraft engine blade manufacturing.
Background
At present, the circular arc mounting plate of the rectifying blade of the aero-engine is turned by a horizontal cart mostly, the circular arc mounting plate is machined, the size of each edge of the flange plate is machined in a milling or grinding mode, and the machining processes are multiple. When the machining is carried out, a plurality of blades are clamped simultaneously for turning, and the risk of batch scrapping exists. In addition, the tool structure of the horizontal cart is complex and huge, the tool cost is high, a crane is needed for clamping, the operation and debugging are difficult, and the existing processing device and method have defects.
Disclosure of Invention
The invention aims to provide a device and a method for machining blade arc mounting plates, which are applied to milling of the aero-engine rectifier blade arc mounting plates, can reduce the scrapping risk of batch turning of the arc mounting plates, improve the machining efficiency, and have the advantages of simple structure, low cost, simple clamping and convenient alignment.
In order to realize the purpose, the invention adopts the following technical scheme:
a device for processing a blade arc mounting plate comprises,
a base;
the positioning seat is connected to the upper end face of the base and comprises a right-angle face vertical to the upper end face of the base;
the first end of the pressing plate is rotatably connected with the positioning seat, the second end of the pressing plate is detachably connected with the positioning seat, and a clamping space is formed between the pressing plate and a right-angle surface of the positioning seat;
the pressing block is detachably connected to the pressing plate and is positioned in the clamping space;
the workpiece positioning pin is positioned in the clamping space and close to a right angle of the right-angle surface, and one end of the workpiece positioning pin is connected with the base;
and the fixture positioning pin is connected to the lower end surface of the base.
Further, the device for processing the blade arc mounting plate also comprises an alignment standard component,
the alignment standard component comprises a notch, a cylindrical surface A, a first plane B and a second plane C, wherein the axis of the cylindrical surface A is perpendicular to the first plane B and parallel to the second plane C, the bottom surface of the cylindrical surface A is located below the first plane B, and the notch is located at the corner of the lower end face of the alignment standard component.
Further, the base is a disc with the upper end face parallel to the lower end face, the fixture positioning pin is vertically connected to the center of the disc, and the appearance of the fixture positioning pin is matched with the rotating shaft mounting seat of the numerical control machining center.
Furthermore, the pressure strip includes the arc and compresses tightly the face, the compact heap includes the arc contact surface, and the pressure strip hugs closely through the arc contact surface of arc compact surface with the compact heap, and the length of arc contact surface in vertical direction is greater than the length of arc compact surface in vertical direction.
Furthermore, a bolt hole is formed in the pressing block, the pressing block is connected with the pressing plate through a bolt, the second end of the pressing plate is connected with the positioning seat through a hexagon socket head cap screw, threads are not arranged at the bottom of the bolt hole in the pressing block, the diameter of the bottom of the bolt hole is larger than the diameter of the threads, and the threads are not arranged on the surface of the bolt locally.
Furthermore, a step protruding into the clamping space is arranged on the right-angle surface of the positioning seat.
Further, the height of the positioning seat meets the condition that when the blade arc mounting plate is clamped in the positioning seat, the upper end face of the positioning seat is lower than the original point position of the blade.
A method for processing a blade arc mounting plate by adopting the device comprises the following steps,
step 1, mounting the device on a four-axis vertical numerical control milling machine;
step 2, installing an alignment standard component in a clamping space of the device, aligning a milling device for machining the blade arc mounting plate, and debugging a milling program by using a coordinate system;
step 3, unloading the alignment standard component, and installing the processing workpiece in a clamping space of the device;
and 4, locking the second end of the pressing plate on the mounting seat, and starting a milling process.
Further, the step 4 includes the steps of,
roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter;
milling the sizes of the four sides of the mounting plate by using a bottom edge of a large-diameter milling cutter;
finish machining the outer circular arc of the mounting plate by using a large-diameter milling cutter;
processing an inner circular arc of the mounting plate by using a small-diameter milling cutter;
the major diameter and the minor diameter refer to the size of the milling cutter relative to the size of the machining portion, and a designer or an operator considers the factor in designing or machining, wherein the milling cutter is called a major diameter if the diameter of the milling cutter is larger than the size of the machining portion, and the milling cutter is called a minor diameter if the diameter of the milling cutter is smaller than the size of the machining portion.
Further, in the present invention,
the outer diameter of the large-diameter milling cutter is more than or equal to phi 15;
roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter until the thinnest part of the excircle allowance is less than or equal to 0.5 mm;
when the outer circular arc of the mounting plate is finely machined by using a large-diameter milling cutter, twice cutting is performed;
when the small-diameter milling cutter is used for processing the inner circular arc of the mounting plate, the outer diameter of the small-diameter milling cutter is smaller than phi 15.
The processing workpiece and the alignment standard part both adopt an alloy part with a cube block as a clamping foundation, and the lower end face of the cube block is provided with a groove for positioning and limiting.
In the prior art, a plurality of machining methods of simultaneous turning are adopted for machining circular arc mounting plates of the rectification blades of the aero-engine, while the circular arc mounting plates and other dimensions are guaranteed by milling a single piece, the cost is reduced by 90% by adopting the device and the method, the structure of the device is simpler, and the alignment is more convenient; because the processing method of the invention is proper, all the sizes of the mounting plate can be processed, the working procedure is directly shortened, and the efficiency of processing equipment is released.
Drawings
FIG. 1 is a schematic structural diagram of a circular arc mounting plate machining (milling) device;
FIG. 2 is a schematic structural diagram of another view angle of the arc-shaped mounting plate machining (milling) device;
FIG. 3 is a schematic view of an alignment standard;
FIG. 4 is a schematic view of an alignment standard with alignment surfaces marked thereon;
fig. 5 is a schematic view of the working state of the arc mounting plate machining (milling) device;
FIG. 6 is an enlarged view of a work piece;
FIG. 7 is an enlarged view of the compression block in engagement with the bolt;
in the figure: 1. the fixture comprises a base, 2, a pressing plate, 3, bolts, 4, a pressing block, 5, a cylindrical pin, 6, a positioning seat, 7, a machining workpiece, 8, an inner hexagon bolt, 9, a workpiece positioning pin, 10, a fixture positioning pin, 11, an alignment standard part, 12, four edges of a mounting plate, 13, an outer arc of the mounting plate, 14, an inner arc of the mounting plate, 15 and a tooth-disengaging position.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
The invention relates to a simple milling device for milling the arc of a blade mounting plate based on a numerical control four-axis machining center, which mainly comprises a base 1, a positioning seat 6, a pressing system and an alignment standard part 11. The positioning seat 6 is firmly fixed on the base 1 by a positioning pin, and then the pressing block 4 is movably arranged on the positioning seat 6.
Base 1 matches with numerical control four-axis machining center rotating base, and base 1 is discoid, and thickness is greater than 20mm, 4 open slots of symmetric distribution all around, as figure 1.
The positioning seat 6 is in a right-angle V shape and is complementary with the positioning surface of the processing workpiece 7 in shape.
The pressing system consists of a pressing plate 2, a pressing block 4 and a bolt 3 for splicing, is arranged on the positioning seat 6 and is used for pressing a processing workpiece 7.
The device also comprises an auxiliary alignment standard 11, used before the installation of the machined workpiece 7, for aligning the center of the device.
The invention provides a method for milling the arc of a blade mounting plate by matching with the device, which comprises the following basic steps:
firstly, installing an alignment standard component 11, aligning a machining coordinate system of a milling device by using the alignment standard component, and debugging a milling program by using the coordinate system;
step two, unloading the alignment standard component and installing a workpiece;
and step three, locking the pressing mechanism and starting a machining program.
The specific processing program thought during milling is as follows:
(1) roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter;
(2) milling the four sides 12 of the mounting plate by using bottom edges of a large-diameter milling cutter;
(3) finish machining the outer circular arc 13 of the mounting plate by using a large-diameter milling cutter;
(4) and machining the inner arc 14 of the mounting plate by using a small-diameter milling cutter. It should be noted that, for the diameter of the milling cutter is relative to the size of the machined part of the workpiece, when the outer circular arc 13 of the mounting plate is machined, the large-diameter milling cutter is preferably selected, the large-diameter milling cutter is recommended to be not less than phi 15, the rough machining is carried out until the thinnest part of the outer circular margin is not more than 0.5mm, and the finish machining is recommended to be carried out twice to avoid the large circular arc fluctuation. To avoid interference during machining of the mounting plate inner arc 14, it is recommended that the milling cutter not be too large.
As shown in fig. 6, the positions to be machined on the machining workpiece 7 include the mounting plate four sides 12, the mounting plate outer circular arc 13 (the mounting plate outer side), and the mounting plate inner circular arc 14.
As shown in fig. 1 to 5 and fig. 7, the device for processing the blade arc mounting plate mainly comprises a base 1, a positioning seat 6, a pressure plate 2, a pressure block 4 and an alignment standard component 11. The central sectional fixture locating pin 10 of base 1 lower surface, positioning seat 6 pass through the locating pin to be connected on base 1, and pressure strip 2 rotates with positioning seat 6 through cylindric lock 5 to be connected, and on compact heap 4 passed through bolt 3 connection pressure strip 2, work piece locating pin 9 was installed on base 1 and is close to 6 inboard right angles departments of positioning seat, and work piece locating pin 9 only has 1, its pinhole interference fit who corresponds on with base 1. One end of the workpiece positioning pin 9 is fixed on the base 1, and the other end of the workpiece positioning pin is a positioning surface, so that when a workpiece coordinate system is aligned, a square notch corresponding to the lower end of the alignment standard component 11 is arranged on the positioning surface of the workpiece positioning pin 9. The inner hexagon bolt 8 is movably arranged at the open movable end of the pressure plate 2 and the positioning seat 6 and is used for fastening and aligning the standard part 11 or processing the workpiece 7.
The size of the clamp positioning pin 10 is matched with a rotating shaft mounting seat of a four-axis vertical numerical control machining center, and is fastened in the center of the lower surface of the base 1.
Form the centre gripping space between the right angle face of pressure strip 2 and positioning seat 6, designed two protruding steps on the right angle locating surface of positioning seat 6, guarantee that the location clamping is stable, further prevent to paste on the locating surface because of other impurities such as iron fillings and influence the location.
The height of the positioning seat 6 is matched with that of the processing workpiece 7, the clamping stability can be influenced due to too low height, and the processing interference can be caused due to too high height. Therefore, the height of the positioning seat 6 cannot be higher than the blade origin (the origin is the design origin of the engine blade), and the height should be lower than the diameter of the milling inner arc cutter or more.
The bottom of the bolt hole of the pressing block 4 is not provided with a screw thread, as shown in fig. 7, the diameter of the screw thread is larger than that of the screw thread, and a single space is formed. The bolts 3 for connecting the pressure piece 4 and the pressure plate 2 are to be partially relieved in contrast to the toothless condition of the bolt holes of the pressure piece 4, i.e. at the threading points 15 in fig. 7. The purpose is to give more degrees of freedom to the limiting pressing block 4 under the condition that the pressing block does not fall off, so that the pressing surface of the pressing block 4 is ensured to be in surface contact with the machined workpiece 7, and the workpiece is ensured to be stably fastened.
The pressing block 4 is close to the surface where the pressing plate 2 is located, the contact surface of the pressing block 2 and the contact surface of the pressing plate 4 are in a circular arc shape, in addition, the length of the pressing block 4 is increased to enable the length of the pressing block 4 to be larger than the width of the pressing plate 2 (the length of the pressing block 4 is increased to further guarantee the pressing stability, and the calculation of the volume of some alloys and blades and the consideration of actual processing are involved), so that the free rotation of the pressing block around the bolt 3 in the process of assembling and disassembling the tool is prevented, and unnecessary troubles are brought to the assembling and disassembling.
The reinforcing ribs are designed at the open ends of the pressure plate 2 and the positioning seat 6 and provided with the hexagon socket head cap screws 8, so that the service life of the pressure plate is prolonged, and the fastening strength is increased. In addition, the pressing plate 2 is convenient to assemble and disassemble, the width of the pressing plate is properly increased, and excessive interference with a disassembling tool is avoided.
As shown in fig. 3 and 4, the alignment standard 11 is designed to facilitate alignment of the jig, workpiece coordinates, and is fabricated in a shape-copying manner (all in a cube) with the workpiece 7, and its positioning-affecting dimensions are consistent with those of the workpiece 7, and its cylindrical surface a, plane B are used to align the origin of the X-axis, Y-axis, and Z-axis, and plane C is used to align the initial machining angle of the rotating shaft. Because the machined workpiece 7 is an aircraft engine blade and the precision requirement is high, the cylindrical surface A and the plane B/C of the standard part need to keep higher precision. In addition, the origin of the alignment standard component 11 coincides with the origin of the blade, and program debugging is greatly facilitated.
A processing method for a blade arc mounting plate specifically comprises the following steps:
step one, mounting a machining device on a four-axis vertical numerically controlled milling machine, as shown in figure 5;
step two, tightly mounting the alignment standard component 11 on the device, further aligning the milling device, and debugging the milling program by using the coordinate system;
step three, dismounting the alignment standard component 11 and mounting the processing workpiece 7;
and step four, locking the pressing mechanism and starting a machining program.
The program idea and the method for milling the arc mounting plate are as follows:
firstly, roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter;
secondly, milling 12 sizes of the four sides of the mounting plate by using a bottom edge of a large-diameter milling cutter;
thirdly, finish machining the outer circular arc 13 of the mounting plate by using a large-diameter milling cutter;
fourthly, machining the inner circular arc 14 of the installation plate by using a small-diameter milling cutter. It should be noted that the diameter of the milling cutter is relative to the size of a workpiece machining part, for machining of the arc mounting plate of the rectifying blade of the compressor of the medium-small thrust aviation turbofan engine, the large-diameter milling cutter is recommended to be not less than phi 15, when the outer arc 13 of the mounting plate is machined, rough machining is carried out until the thinnest part of the allowance of the outer arc is not more than 0.5mm, and finish machining is recommended to be carried out by twice cutting so as to avoid large arc size fluctuation. To avoid interference during machining of the mounting plate inner arc 14, it is recommended that the milling cutter not be too large, typically less than Φ 15.
The device and the processing method can reduce the risk of blade batch scrapping and improve the processing efficiency, and have the advantages of simple structure, simple clamping and convenient alignment, and greatly reduced cost compared with the prior device. The device and the method have obvious effect on the processing effect and obtain good use effect.
The present invention is not described in detail, but is known to those skilled in the art. Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a device that is used for blade circular arc class mounting panel to process which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a base (1);
the positioning seat (6) is connected to the upper end face of the base (1), and the positioning seat (6) comprises a right-angle face vertical to the upper end face of the base (1);
the clamping device comprises a pressing plate (2), wherein a first end of the pressing plate (2) is rotatably connected with a positioning seat (6), a second end of the pressing plate (2) is detachably connected with the positioning seat (6), and a clamping space is formed between the pressing plate (2) and a right-angle surface of the positioning seat (6);
the pressing block (4) is detachably connected to the pressing plate (2) and is positioned in the clamping space;
the workpiece positioning pin (9) is positioned in the clamping space and close to a right angle of the right-angle surface, and one end of the workpiece positioning pin (9) is connected with the base (1);
the fixture comprises a fixture positioning pin (10), and the fixture positioning pin (10) is connected to the lower end face of the base (1).
2. The device for machining the blade arc mounting plate as claimed in claim 1, wherein the device comprises: also comprises an alignment standard component (11),
the alignment standard component (11) comprises a notch, a cylindrical surface A, a first plane B and a second plane C, wherein the axis of the cylindrical surface A is perpendicular to the first plane B and parallel to the second plane C, the bottom surface of the cylindrical surface A is located below the first plane B, and the notch is located at the lower end face corner of the alignment standard component (11).
3. The device for machining the blade arc-shaped mounting plate according to claim 1, wherein the device comprises: the base (1) is a disc with the upper end face parallel to the lower end face, the fixture positioning pin (10) is vertically connected to the center of the disc, and the appearance of the fixture positioning pin (10) is matched with a rotating shaft mounting seat of a numerical control machining center.
4. The device for machining the blade arc-shaped mounting plate according to claim 1, wherein the device comprises: the pressing plate (2) comprises an arc pressing surface, the pressing block (4) comprises an arc contact surface, the pressing plate (2) is tightly attached to the arc contact surface of the pressing block (4) through the arc pressing surface, and the length of the arc contact surface in the vertical direction is larger than that of the arc pressing surface in the vertical direction.
5. The device for machining the blade arc-shaped mounting plate according to claim 1, wherein the device comprises: the bolt hole is formed in the pressing block (4), the pressing block (4) is connected with the pressing plate (2) through the bolt (3), the second end of the pressing plate (2) is connected with the positioning seat (6) through the hexagon socket head cap screw (8), the bottom of the bolt hole in the pressing block (4) is free of threads, the diameter of the bottom of the bolt hole is larger than the diameter of the threads, and the surface of the bolt (3) is locally free of threads.
6. The device for machining the blade arc mounting plate as claimed in claim 1, wherein the device comprises: and a step protruding into the clamping space is arranged on the right-angle surface of the positioning seat (6).
7. The device for machining the blade arc-shaped mounting plate according to claim 1, wherein the device comprises: the height of the positioning seat (6) meets the condition that when the blade arc mounting plate is clamped in the positioning seat (6), the position of the upper end face of the positioning seat (6) is lower than the original point position of the blade.
8. A method for processing a blade arc mounting plate by using the device of claim 2, which is characterized in that: comprises the following steps of (a) preparing a solution,
step 1, mounting the device on a four-axis vertical numerical control milling machine;
step 2, installing an alignment standard component (11) in a clamping space of the device, aligning a milling device for machining the blade arc mounting plate, and debugging a milling program by using a coordinate system;
step 3, unloading the alignment standard component (11), and installing the processing workpiece (7) in a clamping space of the device;
and 4, locking the second end of the compression plate (2) on the mounting seat (6), and starting a milling process.
9. The machining method for the blade arc mounting plate according to claim 8, wherein the machining method comprises the following steps: the step 4 comprises the steps of,
roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter;
milling the sizes of four sides (12) of the mounting plate by using a bottom edge of a large-diameter milling cutter;
finish machining the outer circular arc (13) of the mounting plate by using a large-diameter milling cutter;
machining an inner arc (14) of the mounting plate by using a small-diameter milling cutter;
wherein, the major diameter and the minor diameter refer to the size of the diameter of the milling cutter relative to the size of the processing position.
10. The method for machining the blade arc mounting plate as claimed in claim 9, wherein the method comprises the following steps:
the outer diameter of the large-diameter milling cutter is more than or equal to phi 15;
roughly machining the outer side of the mounting plate by using a large-diameter milling cutter and a side edge milling cutter until the thinnest part of the excircle allowance is less than or equal to 0.5 mm;
when the outer circular arc (13) of the mounting plate is finely machined by using a large-diameter milling cutter, twice cutting is performed;
when the small-diameter milling cutter is used for processing the inner circular arc (14) of the mounting plate, the outer diameter of the small-diameter milling cutter is smaller than phi 15.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210711927.0A CN114918632B (en) | 2022-06-22 | 2022-06-22 | Device and method for machining blade arc mounting plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210711927.0A CN114918632B (en) | 2022-06-22 | 2022-06-22 | Device and method for machining blade arc mounting plate |
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| CN114918632A true CN114918632A (en) | 2022-08-19 |
| CN114918632B CN114918632B (en) | 2023-03-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117020279A (en) * | 2023-10-08 | 2023-11-10 | 江苏科源阀门制造有限公司 | Milling flutes device is used in production and processing of handle butterfly valve |
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| CN117020279A (en) * | 2023-10-08 | 2023-11-10 | 江苏科源阀门制造有限公司 | Milling flutes device is used in production and processing of handle butterfly valve |
| CN117020279B (en) * | 2023-10-08 | 2023-12-19 | 江苏科源阀门制造有限公司 | Milling flutes device is used in production and processing of handle butterfly valve |
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