CN211028125U - Bottom arc and coarse tooth shape processing cutter for main shaft blade root tongue-and-groove tooth shape - Google Patents
Bottom arc and coarse tooth shape processing cutter for main shaft blade root tongue-and-groove tooth shape Download PDFInfo
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- CN211028125U CN211028125U CN201921712003.2U CN201921712003U CN211028125U CN 211028125 U CN211028125 U CN 211028125U CN 201921712003 U CN201921712003 U CN 201921712003U CN 211028125 U CN211028125 U CN 211028125U
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Abstract
The utility model discloses a bottom arc and coarse tooth shape processing cutter of spindle blade root tongue-and-groove profile, through having set up the fan-shaped cutting member, the arc radius of the arc cutter is designed according to blade root tongue-and-groove bottom arc R, belongs to a structure of shaping cutter, and the rigidity is good, and the dimensional accuracy requires highly, has improved machining efficiency; the tooth-shaped cutting part is arranged, the tooth-shaped profile on the tooth-shaped cutter is designed according to the tooth shape of the tongue-and-groove of the blade root, the tooth-shaped cutter belongs to a structure of a forming cutter, the rigidity is good, the requirement on the size precision is high, and the processing efficiency is improved.
Description
Technical Field
The utility model relates to a processing cutter, concretely relates to end arc and coarse tooth shape processing cutter of main shaft blade root tongue-and-groove profile of tooth.
Background
The main shaft is an important part of the axial flow compressor, the blade is arranged on the main shaft through the main shaft blade root mortise to realize the function of the axial flow compressor, and the processing quality of the main shaft blade root mortise is directly related to the dynamic balance of the rotor and the performance and the service life of the whole unit. The axial flow compressor main shaft is generally made of alloy steel, a main shaft blade root mortise is a rotary irregular slot located in a hub and generally has multiple stages, and the machining of the main shaft blade root mortise is completed on a lathe.
The blade root mortise is machined, so that the dimensional accuracy of the tooth profile meets the requirement of a design drawing, the surface roughness of the tooth profile is also high, namely Ra1.6, and the minimum fillet of the mortise tooth profile is R0.8; if the rough machining and the finish machining both use numerical control arc turning tools, the machining efficiency is low, and the economy is not high.
Therefore, the blade root tongue-and-groove tooth profile machining technology in the prior art has the problems that the shape of a cutter is not matched, the machining precision cannot be guaranteed, the arrangement of the cutter in the machining process is unreasonable, and the machining efficiency is low.
Disclosure of Invention
An object of the utility model is to provide a bottom arc and coarse tooth shape processing cutter of main shaft blade root tongue-and-groove profile of tooth for there is the cutter shape to mismatch in the blade root tongue-and-groove profile of tooth processing technique among the solution prior art, leads to the unable assurance of machining precision and the arrangement of tool in the course of working unreasonable, leads to the problem that machining efficiency is low.
In order to realize the task, the utility model discloses a following technical scheme:
a bottom arc machining tool for a spindle blade root tongue-and-groove tooth shape comprises a first tool shank and a first tool bit connected with the first tool shank, wherein the first tool bit comprises a first tool body and a first blade;
a pair of fan-shaped cutting pieces are arranged at the end part, far away from the first knife handle, of the first blade, and the fan-shaped cutting pieces are respectively arranged on two sides of the first blade; the fan-shaped cutting piece is used for machining the bottom arc of the blade root mortise.
Furthermore, the value range of the distance a of the fan-shaped cutting piece extending out of the first blade is more than or equal to 3.9 and less than or equal to 9.7, and the unit is mm.
Furthermore, a tool withdrawal groove is formed at the joint of the fan-shaped cutting piece and the first blade; and a cutting groove is formed at the joint of the first knife handle and the first knife head.
Furthermore, a pair of blade supporting blocks for providing rigid supporting force for the fan-shaped cutting piece are arranged on two sides of the first cutter body, and the blade supporting blocks are also connected with the fan-shaped cutting piece;
the distance between the sector cutter and the first blade axis is greater than the distance between the blade support block and the first blade axis.
A rough tooth-shaped machining tool for a spindle blade root tongue-and-groove tooth shape comprises a second tool handle and a second tool bit connected with the second tool handle, wherein the second tool bit comprises a second tool body and a second blade;
a pair of tooth-shaped cutting parts are arranged at the end part of the second blade far away from the second knife handle; the pair of tooth-shaped cutting pieces are respectively arranged on two sides of the second blade; the pair of tooth-shaped cutting parts is used for processing the rough tooth shape of the blade root tongue-and-groove.
Further, the tooth-shaped cutting element comprises a first cutting tooth and a second cutting tooth which are sequentially arranged along the axial direction of the second blade;
the first cutting teeth are trapezoidal, and the bottom surfaces of the first cutting teeth are connected to the side surfaces of the second blades.
Furthermore, the value range of the tooth space d of the tooth-shaped cutting piece is that d is more than or equal to 7 and less than or equal to 26.5, and the unit is mm; the value range of the tooth height c of the tooth-shaped cutting part is more than or equal to 3.5 and less than or equal to 9.2, and the unit is mm.
A processing method of a blade root mortise tooth profile is used for forming a tooth-shaped blade root mortise on a part to be processed, a straight groove is formed on the part to be processed, and the processing method is executed according to the following steps:
step 1, performing bottom arc rough machining on a straight groove on the part to be machined by adopting a bottom arc machining tool to obtain a bottom arc blade root mortise;
the bottom arc processing cutter adopts a bottom arc processing cutter of a main shaft blade root tongue-and-groove tooth shape;
the rough tooth shape processing cutter adopts a rough tooth shape processing cutter of a main shaft blade root tongue-and-groove tooth shape;
and 3, performing finish machining on the rough tooth-shaped blade root mortise by adopting a numerical control arc turning tool to obtain the tooth-shaped blade root mortise.
Further, the step 1 is specifically executed according to the following steps:
step 1.1, setting a straight groove on the part to be processed, which specifically comprises the following steps:
placing a tool setting block at the bottom of the straight groove on the part to be processed;
extending a bottom arc machining cutter into the straight groove on the part to be machined to press the tool setting block, and finishing the determination of the radial position of the cutter;
on the basis of determining the radial position of the cutter, a bottom arc machining cutter is tightly attached to the side face of a straight groove on the machined part, and the axial position of the cutter is determined;
and 1.2, after tool setting is finished, carrying out bottom arc rough machining on the side surface of the straight groove by using a bottom arc machining tool to obtain a bottom arc blade root mortise.
Further, the step 2 is executed according to the following steps:
step 2.1, selecting the size of a coarse tooth-shaped processing cutter according to the shape and size of the mortise of the tooth-shaped blade root to obtain a tooth-shaped cutter;
2.2, completing tool setting of the tooth-shaped tool in the bottom arc blade root mortise by using a tool setting block;
and 2.3, after tool setting is finished, performing tooth-shaped rough machining on the side surface of the bottom arc blade root mortise by using a tooth-shaped tool to obtain a rough-tooth-shaped blade root mortise.
Compared with the prior art, the utility model following technological effect has:
1. the utility model provides a machining cutter of main shaft blade root tongue-and-groove profile of tooth has set up fan-shaped cutting member, and the arc radius of arc cutter is designed according to blade root tongue-and-groove bottom arc R, belongs to shaping cutter a structure, has improved production machining efficiency, has improved the rigidity of cutter, has improved the size precision of processing the part;
2. the utility model provides a processing cutter of main shaft blade root tongue-and-groove profile of tooth has set up the profile of tooth cutting member, and the profile of tooth profile on the profile of tooth cutting member is designed according to blade root tongue-and-groove profile of tooth, belongs to shaping cutter a structure, has improved production machining efficiency, has improved the rigidity of cutter, has improved the size precision of processing the part;
3. the utility model provides a blade root tongue-and-groove profile machining method uses circular arc cutter and profile cutter to carry out rough machining to the tongue-and-groove profile, can the efficient material of getting rid of, improves machining efficiency; the numerical control arc turning tool is adopted to carry out finish machining on the tooth profile of the blade root tongue-and-groove, the size precision of the tooth surface can be ensured, the surface roughness can be improved, two rough machining processes and two finish machining processes are combined, the problem of machining the blade root tongue-and-groove is solved, the drawing and production requirements are met, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a prior art blade root mortise;
fig. 2 is a top view of a machining tool for a spindle blade root mortise tooth profile according to a first embodiment of the present invention;
fig. 3 is a side view of a machining tool for a spindle blade root mortise tooth profile according to a first embodiment of the present invention;
fig. 4 is a sectional view of a spindle blade root mortise tooth profile machining tool along the direction a-a according to a first embodiment of the present invention;
fig. 5 is a top view of a spindle blade root mortise tooth profile machining tool according to a second embodiment of the present invention;
fig. 6 is a side view of a spindle blade root mortise tooth profile machining tool according to a second embodiment of the present invention;
fig. 7 is a sectional view of the spindle blade root mortise tooth machining tool according to the second embodiment of the present invention along the direction a-a;
fig. 8 is a schematic view of bottom arc rough machining radial tool setting according to an embodiment of the present invention;
fig. 9 is a schematic view of axial tool setting for rough machining of a bottom arc according to an embodiment of the present invention;
fig. 10 is a schematic view of a bottom arc rough right groove according to an embodiment of the present invention;
fig. 11 is a schematic view of a bottom arc rough machining left groove according to an embodiment of the present invention;
fig. 12 is a schematic view of radial tool setting in rough machining of a tooth profile according to an embodiment of the present invention;
fig. 13 is a schematic axial tool setting diagram for rough machining of a tooth profile according to an embodiment of the present invention;
fig. 14 is a schematic view of a tooth-shaped rough right groove according to an embodiment of the present invention;
fig. 15 is a schematic view of a tooth-shaped rough machining left groove according to an embodiment of the present invention;
fig. 16 is a schematic view of a fine machining radial tool setting provided in an embodiment of the present invention;
fig. 17 is a schematic view of finish machining axial tool setting provided in an embodiment of the present invention;
fig. 18 is a schematic view of a right groove finish machining provided by an embodiment of the present invention;
fig. 19 is a schematic view of a left groove finish machining according to an embodiment of the present invention.
The reference numbers in the figures represent: 1-a first knife handle, 2-a first knife head, 3-a tool withdrawal groove, 4-a cutting groove, (2-1) -a first knife body, (2-2) -a first blade, (2-3) -a fan-shaped cutting part, (2-4) -a blade supporting block, I-a second knife handle, II-a second knife head, (II-I) -a second knife body, (II-II) -a second blade, (II-III) -a tooth-shaped cutting part, (II-III-I) -a first cutting tooth, (II-III-II) -a second cutting tooth, A-a bottom arc machining knife, B-a straight groove, C-a bottom arc blade root tongue groove, D-a coarse tooth shape machining knife, E-a coarse tooth blade root tongue groove, F-a numerical control arc lathe tool, g-tooth-shaped blade root mortise and tenon and H-tool setting block.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and specific embodiments.
The nouns appearing in the present invention are explained first:
blade root tongue-and-groove: as shown in fig. 1, the grooves have a tooth-like structure therein.
Example one
The embodiment discloses a machining tool for a spindle blade root tongue-and-groove tooth shape, which comprises a first tool shank 1 and a first tool bit 2 connected with the first tool shank 1, and is characterized in that the first tool bit 2 comprises a first tool body 2-1 and a first blade 2-2, the first blade 2-2 is stacked and installed on the first tool body 2-1, and the axial symmetry plane of the first tool body 2-1 is superposed with the axial symmetry plane of the first blade 2-2;
a pair of fan-shaped cutting pieces 2-3 are arranged at the end part of the first blade 2-2 far away from the first tool handle 1, and the pair of fan-shaped cutting pieces 2-3 are respectively arranged at two sides of the first blade 2-2; the fan-shaped cutting parts 2-3 are used for processing the bottom arc of the blade root mortise.
As shown in fig. 2-4, in the present embodiment, an arc cutting tool is designed, the tool is integrally divided into two parts, namely a first tool shank 1 and a tool bit 2, the tool bit 2 is mounted at the top end of the first tool shank 1, and the tool bit 2 includes a first tool body 2-1 and a first blade 2-2, wherein the first tool body 2-1 is used for providing a rigid bearing force for the first blade 2-2 to prevent the first blade 2-2 from being broken during use, the first tool body 2-1 and the first blade 2-2 in the present embodiment are arranged along the radial direction of the first tool shank 1, and as shown in fig. 2, the first tool body 2-1 and the first blade 2-2 are connected by a bolt.
As shown in fig. 2, in order to perform the circular arc cutting, fan-shaped cutting elements 2-3 are provided on the first blade 2-2, the fan-shaped cutting elements 2-3 are provided in pairs on both sides of the first blade 2-2, and the fan-shaped cutting elements 2-3 may be integrally formed with the first blade 2-2.
In this embodiment, as shown in FIG. 2, the fan-shaped cutting elements 2-3 are shaped as a portion of a circle, wherein the radius R of the circle is in the range of [2.4mm,16.1mm ].
Optionally, the distance a that the fan-shaped cutting member 2-3 extends out of the first blade 2-2 has a value range of 3.9 ≤ a ≤ 9.7, and the unit is mm.
In the present embodiment, as shown in FIG. 2, the distance a is a straight distance from the outer side edge of the blade 2-2 to the outer side edge of the sector cutter 2-3.
In the present embodiment, as shown in FIG. 2, the length b of the fan-shaped cutting member 2-3 ranges from [4.6mm,17.1mm ].
Optionally, a tool withdrawal groove 3 is formed at the joint of the fan-shaped cutting part 2-3 and the first blade 2-2.
In the present embodiment, the relief groove 3 is provided for facilitating the cutting by the tool, and the purpose of the relief groove 3 is to prevent the tool bar from interfering with the workpiece during machining.
Optionally, a cutting groove 4 is formed at the joint of the first tool handle 1 and the first tool head 2.
In this embodiment, for the convenience of cutter cutting, set up cutting groove 4, the purpose that sets up cutting groove 4 is to have the guide effect to iron fillings, the chip removal of being convenient for add man-hour.
Optionally, a pair of blade supporting blocks 2-4 for providing a rigid supporting force for the fan-shaped cutting element 2-3 are arranged on two sides of the first cutter body 2-1, and the blade supporting blocks 2-4 are further connected with the fan-shaped cutting element 2-3;
the distance between the fan-shaped cutting part 2-3 and the axis of the first cutter body 2-1 is larger than the distance between the blade supporting block 2-4 and the axis of the first cutter body 2-1.
In the embodiment, as shown in fig. 3, in order to realize rigid support of the sector cutting members 2-3 and prevent the sector cutting members 2-3 from breaking during cutting, the blade support block 2-3 is provided, the blade support block 2-4 is provided below the sector cutting members 2-3 to provide a supporting force, and in order to ensure normal use of the sector cutting members 2-3, the blade support block 2-4 is retracted below the sector cutting members 2-3.
Example two
A machining cutter for a spindle blade root tongue-and-groove tooth shape comprises a second cutter handle I and a second cutter head II connected with the second cutter handle I, wherein the second cutter head II comprises a second cutter body II-I and a second blade II-II, the second blade II-II is stacked and installed on the second cutter body II-I, and the axial symmetrical surface of the second cutter body II-I is superposed with the axial symmetrical surface of the second blade II-II;
a pair of tooth-shaped cutting parts II-III is arranged at the end part of the second blade II-II far away from the second knife handle I; a pair of tooth-shaped cutting pieces II-III are respectively arranged on two sides of the second blade II-II; a pair of tooth-shaped cutting parts II-III is used for processing the rough tooth shape of the blade root tongue-and-groove.
As shown in fig. 5 to 7, a tooth-shaped processing tool is designed in the present embodiment, which is different from the arc-shaped processing tool in the first embodiment in that the sector cutting members 2 to 3 in the first embodiment are replaced by tooth-shaped cutting members II to III for realizing the processing and cutting of the tooth shape.
Optionally, the toothed cutting member II-III comprises a first cutting tooth II-III-I and a second cutting tooth II-III-II arranged axially in sequence along the second blade II-II;
the first cutting tooth II-III-I is trapezoidal, and the bottom surface of the first cutting tooth II-III-I is connected to the side surface of the second blade II-II.
In this embodiment, the number of second cutting teeth II-III-II in the toothed cutting member II-III can be adjusted according to the actual requirements, but only one first cutting tooth II-III-I is provided in the toothed cutting member II-III.
In this embodiment, as shown in fig. 5, the first cutting tooth II-III-I is trapezoidal, the right profile of the trapezoid is the same according to the mortise profile, and the right profile is designed to be matched with the bottom arc lathe tool.
In this embodiment, as shown in FIG. 5, the included angle α between the second cutting tooth II-III-II and the second blade II-II is in the range of [29 degrees, 37 degrees ] or [40 degrees, 43 degrees ].
In this embodiment, the same as the arc-shaped machining tool in the first embodiment is also provided with the blade support block and the cutting groove, and the functions achieved by the same are the same as those in the first embodiment.
Optionally, the tooth space d of the tooth-shaped cutting parts II-III is in a range of 7-26.5 mm; the value range of the tooth height c of the tooth-shaped cutting part II-III is that c is more than or equal to 3.5 and less than or equal to 9.2, and the unit is mm.
In the present embodiment, as shown in fig. 5, the tooth pitch d is a linear distance between two adjacent teeth.
In this embodiment, the tooth height c of the toothed cutting member II-III, i.e. the distance c by which each cutting tooth protrudes beyond the blade II-II, is the same, as shown in fig. 5.
EXAMPLE III
A processing method of a blade root mortise tooth profile is used for forming a tooth-shaped blade root mortise on a part to be processed, forming a straight groove on the part to be processed, and executing the following steps:
step 1, carrying out bottom arc rough machining on a straight groove B on the part to be machined by adopting a bottom arc machining tool A to obtain a bottom arc blade root mortise C;
the bottom arc processing cutter A adopts the bottom arc processing cutter of the main shaft blade root tongue-and-groove tooth type of the first embodiment;
the rough tooth shape processing cutter D adopts the rough tooth shape processing cutter D of the tongue-and-groove tooth shape of the blade root of the main shaft in the second embodiment;
and 3, performing finish machining on the rough tooth-shaped blade root mortise (E) by adopting a numerical control arc turning tool F to obtain a tooth-shaped blade root mortise (G).
In this embodiment, a combined process method is provided, which is completely different from the prior art, in which a bottom arc forming lathe tool a and a profile forming lathe tool D are used to perform rough machining on the main shaft mortise profile, and a numerical control arc lathe tool F is used to perform finish machining on the main shaft mortise profile.
In order to improve the processing efficiency, a bottom arc processing cutter A is adopted to roughly process a bottom arc of the straight groove, a rough tooth-shaped processing cutter D is adopted to roughly process the tooth shape of the side face of the straight groove, and in order to improve the size precision of the main shaft mortise and the surface roughness of the mortise, a numerical control arc turning tool F is adopted for finish processing to carry out numerical control program processing, and finally the processing of the whole tooth-shaped blade root mortise is completed.
Optionally, step 1 is specifically performed according to the following steps:
step 1.1, tool setting of a straight groove B on a part to be processed specifically comprises the following steps:
placing a tool setting block at the bottom of a straight groove B on a part to be processed;
the bottom arc machining tool A extends into a straight groove B on a part to be machined to press a tool setting block H, and the radial position of the tool is determined;
on the basis of determining the radial position of the cutter, the bottom arc machining cutter A is attached to the side face of a straight groove B on a machined part, and the axial position of the cutter is determined;
and 1.2, after tool setting is finished, carrying out bottom arc rough machining on the side surface of the straight groove B by using a bottom arc machining tool A to obtain a bottom arc blade root mortise C.
In the present embodiment, as shown in fig. 8 to 11, fig. 8 to 9 are schematic diagrams of tool setting, and fig. 10 to 11 are schematic diagrams of cutting, a bottom arc machining tool a is used to rough machine a bottom arc of a blade root mortise, and the bottom arc machining tool a is divided into a left type tool and a right type tool, which are respectively used to rough machine arcs on left and right sides of the bottom of the mortise.
In this embodiment, when the bottom arc machining tool a is used, the tool setting manner (i.e., the machining coordinate system) is determined: determining the radial position (X-axis 0 point) of a cutter, using a tool setting block to set a tool at the bottom of a straight slot, determining the X-axis 0 point according to the thickness of the tool setting block, determining the axial position (Z-axis 0 point) of the cutter, setting the tool setting on the side surface of the straight slot B as the Z-axis 0 point, after the X-axis and Z-axis 0 points are determined, feeding the bottom arc machining cutter A for mm to the left side and the right side along the spindle shaft respectively, leaving 0.2mm of allowance on the axial single side, and after moving along the Y-axis direction, finishing the rough machining of the bottom arc of the tenon slot.
Optionally, step 2 is performed according to the following steps:
2.1, selecting the size of a rough tooth-shaped machining cutter D according to the shape and size of the mortise of the tooth-shaped blade root to obtain a tooth-shaped cutter;
2.2, completing tool setting of the tooth-shaped tool in the bottom arc blade root mortise C by using a tool setting block H;
and 2.3, after tool setting is finished, performing tooth-shaped rough machining on the side surface of the bottom arc blade root mortise C by using a tooth-shaped tool to obtain a rough tooth-shaped blade root mortise E.
In this embodiment, as shown in fig. 12 to 15, a rough tooth profile machining tool D, i.e., a tooth profile tool, is used to roughly machine the blade root tongue-and-groove tooth profile, the tooth profile is provided on both sides of the tooth profile tool, the structure and size of the tooth profile are designed according to the tongue-and-groove design drawing to be cut, and the tooth profile formed turning tool is used in production after passing through three-coordinate detection after being manufactured.
When the turning tool of the coarse-tooth-shaped processing tool D is used, the tool setting mode (namely a processing coordinate system) is determined: determining the radial position (X-axis 0 point) of a cutter, using a tool setting block to set the cutter at the bottom of a straight groove, determining the X-axis 0 point according to the thickness of the tool setting block, determining the axial position (Z-axis 0 point) of the cutter, setting the cutter at the side surface of the straight groove, and setting the cutter as the Z-axis 0 point. After the 0 points of the X axis and the Z axis are determined, the tooth-shaped forming turning tool feeds mm to the left side and the right side along the main shaft respectively, the allowance of the axial single side is 0.2mm, and after the tooth-shaped forming turning tool moves along the Y axis direction, the rough machining of the mortise tooth shape is completed.
In the present embodiment, as shown in fig. 16 to 19, a numerically controlled circular arc turning tool F is used to perform finish machining on the rough-toothed root mortise E, and the numerically controlled circular arc turning tool is divided into a left type tool and a right type tool, which are respectively used for machining the left-side and right-side mortise tooth profiles.
When the numerical control arc turning tool F is used, a tool setting mode (namely a processing coordinate system) is determined: as shown in fig. 16, firstly, the radial position (X-axis 0 point) of the tool is determined, the tool is set on the excircle of the spindle, the X-axis 0 point is set according to the circular arc radius of the tool, the axial position (Z-axis 0 point) of the tool is determined, as shown in fig. 17, the tool is set on the side surface of the straight slot, the Z-axis 0 point is set according to the circular arc radius of the tool, after the coordinate system is determined, the tooth shapes on the left side and the right side of the mortise are respectively finished by a numerical control program to meet the drawing requirements, and the machining of the tooth shape of the.
In the embodiment, the circular arc cutter in the first embodiment and the tooth-shaped cutter in the second embodiment are used for roughly machining the tooth shape of the mortise, so that materials can be efficiently removed, and the machining efficiency is improved; adopt numerical control circular arc lathe tool to carry out the finish machining to blade root tongue-and-groove profile of tooth, can guarantee flank of tooth size precision and improve roughness, the utility model discloses combine two kinds of thick, finish machining technology, solved blade root tongue-and-groove processing difficult problem, satisfied drawing and production requirement, improved production efficiency.
Claims (7)
1. A bottom arc machining tool for a spindle blade root tongue-and-groove tooth type comprises a first tool shank (1) and a first tool bit (2) connected with the first tool shank (1), and is characterized in that the first tool bit (2) comprises a first tool body (2-1) and a first blade (2-2), the first blade (2-2) is stacked and installed on the first tool body (2-1), and the axial symmetry plane of the first tool body (2-1) is coincident with the axial symmetry plane of the first blade (2-2);
a pair of fan-shaped cutting pieces (2-3) are arranged at the end part, far away from the first knife handle (1), of the first blade (2-2), and the pair of fan-shaped cutting pieces (2-3) are respectively arranged at two sides of the first blade (2-2); the fan-shaped cutting piece (2-3) is used for machining the bottom arc of the blade root mortise.
2. The tool for machining the bottom arc of the mortise tooth profile of the spindle blade root according to claim 1, wherein a distance a by which the fan-shaped cutting member (2-3) extends out of the first blade (2-2) has a value ranging from 3.9 to 9.7 in mm.
3. The tool for machining the bottom arc of the mortise tooth profile of the spindle blade root according to claim 1, wherein a relief groove (3) is formed at the joint of the fan-shaped cutting member (2-3) and the first blade (2-2); a cutting groove (4) is formed in the connection position of the first knife handle (1) and the first knife head (2).
4. The tool for machining bottom arcs of spindle blade root mortise tooth type according to claim 1, wherein a pair of blade support blocks (2-4) for providing rigid support force for the sector cutting members (2-3) are provided at both sides of the first cutter body (2-1), the blade support blocks (2-4) being further connected to the sector cutting members (2-3);
the distance between the fan-shaped cutting piece (2-3) and the axis of the first cutter body (2-1) is larger than the distance between the blade supporting block (2-4) and the axis of the first cutter body (2-1).
5. A rough tooth shape machining tool for a main shaft blade root tongue-and-groove tooth shape comprises a second tool handle (I) and a second tool bit (II) connected with the second tool handle (I), and is characterized in that the second tool bit (II) comprises a second tool body (II-I) and a second blade (II-II), the second blade (II-II) is stacked on the second tool body (II-I), and the axial symmetry plane of the second tool body (II-I) is superposed with the axial symmetry plane of the second blade (II-II);
a pair of tooth-shaped cutting parts (II-III) is arranged at the end part of the second blade (II-II) far away from the second knife handle (I); the pair of tooth-shaped cutting pieces (II-III) are respectively arranged on two sides of the second blade (II-II); the pair of tooth-shaped cutting pieces (II-III) is used for machining the rough tooth shape of the blade root mortise.
6. The tool for machining coarse teeth of the spindle blade root mortise type according to claim 5, wherein said tooth-shaped cutting member (II-III) comprises a first cutting tooth (II-III-I) and a second cutting tooth (II-III-II) arranged in sequence axially along said second blade (II-II);
the first cutting tooth (II-III-I) is trapezoidal, and the bottom surface of the first cutting tooth (II-III-I) is connected to the side surface of the second blade (II-II).
7. The tool for machining a coarse toothing of the shape of the mortise tooth of a spindle root according to claim 5, characterized in that the tooth spacing d of the toothed cutting members (II-III) is in the range of 7 to 26.5 in mm; the value range of the tooth height c of the tooth-shaped cutting part (II-III) is more than or equal to 3.5 and less than or equal to 9.2, and the unit is mm.
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| CN201921712003.2U CN211028125U (en) | 2019-10-14 | 2019-10-14 | Bottom arc and coarse tooth shape processing cutter for main shaft blade root tongue-and-groove tooth shape |
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| CN115488360A (en) * | 2022-11-10 | 2022-12-20 | 中国航发沈阳黎明航空发动机有限责任公司 | Efficient turning method for annular mortise of high-temperature alloy disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115488360A (en) * | 2022-11-10 | 2022-12-20 | 中国航发沈阳黎明航空发动机有限责任公司 | Efficient turning method for annular mortise of high-temperature alloy disc |
| CN115488360B (en) * | 2022-11-10 | 2023-03-07 | 中国航发沈阳黎明航空发动机有限责任公司 | Efficient turning method for annular mortise of high-temperature alloy disc |
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