CN112264649B - Machining method of fan-shaped clamping rod - Google Patents
Machining method of fan-shaped clamping rod Download PDFInfo
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- CN112264649B CN112264649B CN202010920015.5A CN202010920015A CN112264649B CN 112264649 B CN112264649 B CN 112264649B CN 202010920015 A CN202010920015 A CN 202010920015A CN 112264649 B CN112264649 B CN 112264649B
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- clamping rod
- shaped clamping
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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
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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
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/12—Boron nitride
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Abstract
The invention relates to a machining method of a fan-shaped clamping rod, and belongs to the technical field of helix traveling wave tubes. The operation steps are as follows: (1) processing the blank material into long strips by using a cutter; (2) milling six surfaces of a blank material at a high speed; (3) machining and molding a large arc surface on the fan-shaped clamping rod by using a broaching tool; (4) processing and molding two inclined planes of the fan-shaped clamping rod; (5) milling the part of the blank material exceeding the height of the fan-shaped clamping rod by using a cutter; (6) and (4) processing and forming a small arc surface of the fan-shaped clamping rod. According to the invention, the milling machine is matched with the clamp and the cutter to process the fan-shaped clamping rod, so that the high-precision processing requirement of the fan-shaped clamping rod is met, the processing efficiency is improved, and the cost is reduced.
Description
Technical Field
The invention relates to a machining method of a fan-shaped clamping rod, and belongs to the technical field of helix traveling wave tubes.
Background
Helix traveling wave tube plays indispensable effect in communication and electron countermeasure field, and the supporting transition piece between helix and tube is regarded as to the supporting rod among its slow wave circuit, plays the heat conduction effect simultaneously, in time conducts the heat that produces intraductal to the tube surface. The materials widely used in traveling wave tubes are beryllium oxide and anisotropic boron nitride, which have high thermal conductivity. However, beryllium oxide is toxic and dangerous, while boron nitride is non-toxic, and the thermal conductivity of boron nitride decreases slightly with the increase of temperature, so that beryllium oxide is gradually replaced in recent years.
The clamping rod is made of an anisotropic pyrolytic boron nitride material which is white, non-toxic, free of pores, easy to process, compact in surface, good in air tightness, high-temperature resistant, good in heat conductivity and low in thermal expansion coefficient. The graphite is prepared by a chemical vapor deposition method, is called white graphite, has a layered structure, has excellent machining performance and is easy to delaminate. Because of the factors of purity, air release performance and the like, the processing of the clamping rod has a bottleneck all the time, depends on import, and has long processing period and high price.
The fan-shaped clamping rod is a special-shaped clamping rod which is required by the market, the dielectric property is good, the machining of the fan-shaped clamping rod has the following difficulties that firstly, the size is small, the precision requirement is high, the clamping height of the clamping rod is generally smaller than 1mm, the tolerance precision is 5 mu m, secondly, the shapes of all the surfaces of the fan-shaped clamping rod are irregular, and the positioning and clamping are difficult.
Chinese patent document CN208528830U provides a grinding tool for ceramic clamping rods of traveling wave tubes, which includes a tool main body and an adjusting slide plate arranged on a base, the tool main body and the adjusting slide plate are mutually matched tapered wedges, and the inclined surfaces of the tool main body and the adjusting slide plate are mutually attached; the fixture comprises a base, a tool main body and an adjusting sliding plate, and is characterized by further comprising a pressing plate and a supporting plate which are detachably connected to two sides of the base, wherein the tool main body and the adjusting sliding plate are arranged between the pressing plate and the supporting plate, and a gap is reserved between the tip of the adjusting sliding plate and the pressing plate to form a workpiece clamping position. The tool can only grind the clamping rod, but cannot machine the fan-shaped clamping rod.
In view of this, a method for processing a sector clamping rod is designed, the sector clamping rod is processed by matching a milling machine with a clamp and a cutter, the high-precision processing requirement of the sector clamping rod is met, the processing efficiency is improved, and the cost is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the method for machining the fan-shaped clamping rod, which is characterized in that the fan-shaped clamping rod is machined by matching a milling machine with a clamp and a cutter, so that the high-precision machining requirement of the fan-shaped clamping rod is met, the machining efficiency is improved, and the cost is reduced.
The technical scheme of the invention is as follows:
a method for processing a sector clamping rod comprises the following steps:
(1) mounting a cutter on a milling machine, fixing the blank material on an operation table of the milling machine, and processing the blank material into a long strip shape by using the cutter;
(2) fixing a strip-shaped blank material on a fixture A, fixing the fixture A on a milling machine operating table, then milling six surfaces of the blank material at a high speed, ensuring the processing precision of a clamping rod through high-speed milling, and processing the blank material into a shape with the height of 0.6-1.3mm and the width of 0.3-0.6 mm;
(3) the milling machine reloads the broaching tool, and the circular arc of broaching tool is unanimous with the radian of the major arc face on the fan-shaped supporting rod, utilizes the broaching tool to carry out machine-shaping with the major arc face on the fan-shaped supporting rod, and the broaching tool machining parameter is: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm;
(4) the milling machine changes the cutter A, and two inclined planes of the fan-shaped clamping rod are machined and formed, and the machining parameters of the cutter A are as follows: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm;
(5) changing a cutter by the milling machine, fixing the major arc surface of the blank downwards to a clamp B, fixing the clamp B to a milling machine operating table, and milling the height part of the blank material exceeding the fan-shaped clamping rod by the cutter;
(6) the milling machine changes the cutter B, the cutter B is utilized to machine and shape the small arc surface of the fan-shaped clamping rod, and the machining parameters of the cutter B are as follows: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm.
Preferably, the blank material in the step (1) has the length of 90-190mm, the height of 0.9-1.6mm and the width of 0.5-0.8 mm.
Preferably, the machining parameters during high-speed milling in the step (2) are as follows: the rotating speed is 6000-.
Preferably, the processing parameters of the tool in the step (5) are as follows: the rotating speed is 6000-.
Preferably, anchor clamps A includes dog A and dog an, and dog A and dog a pass through bolted connection, and dog A sets up cuboid recess A near one side upper end of dog a, treats that processing blank material places in recess A, presss from both sides tightly blank material through bolt tightening dog A and dog a.
Preferably, anchor clamps B includes dog B and dog B, and dog B and dog B pass through bolted connection, and dog B is close to one side upper end of dog B and sets up recess B, and dog B is close to one side upper end of dog B and sets up recess B, and recess B lower surface radian is unanimous with fan-shaped supporting rod orthodrome radian, and recess B side is unanimous with fan-shaped supporting rod side inclination, and recess B is unanimous with recess B shape, through recess B and the tight orthodrome place end of the fan-shaped supporting rod of recess B lock.
Further preferably, anchor clamps A and anchor clamps B are the mould steel material, and mould steel non-deformable, processing depth of parallelism less than or equal to 0.02mm guarantees that the blank material atress of treating processing is even, avoids causing the fracturing damage, and anchor clamps A and anchor clamps B can directly adsorb on milling machine magnetism operation panel simultaneously, easy to assemble.
Preferably, the cutter A is a conical plate, and the inclination angle and the length of the two sides of the cutter A are consistent with those of the two sides of the fan-shaped clamping rod.
Preferably, cutter B includes the rectangular plate, and rectangular plate one side processing has the cambered plate, and the radian of cambered plate is unanimous with the radian of fan-shaped supporting rod small circle cambered surface, processes out fan-shaped supporting rod small circle cambered surface with the blank material through feeding of cutter B.
The invention has the beneficial effects that:
1. according to the invention, the milling machine is matched with the clamp and the cutter to process the fan-shaped clamping rod, so that the high-precision processing requirement of the fan-shaped clamping rod is met, the processing efficiency is improved, and the cost is reduced.
2. The clamp A and the clamp B are made of die steel, the die steel is not easy to deform, the processing parallelism is less than or equal to 0.02mm, the blank to be processed is uniformly stressed, fracturing damage is avoided, and meanwhile the clamp A and the clamp B can be directly adsorbed on a magnetic operating table of a milling machine, so that the clamp A and the clamp B are convenient to install.
Drawings
FIG. 1 is a schematic view of the blank material after processing in step (3) of the present invention;
FIG. 2 is a schematic view of the blank material after being processed in step (4) of the present invention;
FIG. 3 is a schematic view of the blank after processing in step (5) of the present invention;
FIG. 4 is a schematic view of the blank after processing in step (6) of the present invention;
FIG. 5 is a schematic view of the mounting structure of the tool A of the present invention;
FIG. 6 is a schematic view of the installation structure of the cutter B of the present invention;
FIG. 7 is a schematic structural view of a sector clamping rod after the machining of the present invention;
wherein: 1. a clamp A; 2. a clamp B; 3. a block A; 4. a block a; 5. a stop block B; 6. a block b; 7. a cutter A; 8. a cutter B; 9. a sector clamping rod.
Detailed Description
The present invention will be further described by way of examples, but not limited thereto, with reference to the accompanying drawings.
Example 1:
the embodiment provides a machining method of a sector clamping rod, which comprises the following steps:
(1) mounting a cutter on a milling machine, fixing the blank material on an operation table of the milling machine, and processing the blank material into a long strip shape by using the cutter;
(2) the strip-shaped blank material is fixed on the fixture A1, the fixture A1 is fixed on a milling machine operating table, six surfaces of the blank material are milled at high speed, the machining precision of a clamping rod is guaranteed through high-speed milling, and the blank material is machined to be 0.6mm in height and 0.3mm in width.
(3) The milling machine reloads the broaching tool, and the circular arc of broaching tool is unanimous with the radian of the major arc face on the fan-shaped supporting rod, utilizes the broaching tool to carry out machine-shaping with the major arc face on the fan-shaped supporting rod, and the broaching tool machining parameter is: the feeding speed is 5m/min, the feeding amount is 0.01mm, and the processed blank material is shown in figure 1;
(4) the milling machine changes the cutter A7, and two inclined planes of the fan-shaped clamping rod are machined and formed, and the machining parameters of the cutter A7 are as follows: the feeding speed is 5m/min, the feeding amount is 0.01mm, and the processed blank material is shown in figure 2;
(5) changing a cutter by a milling machine, fixing the major arc surface of the blank downwards to a clamp B2, fixing a clamp B2 to an operating table of the milling machine, milling off the part of the blank material exceeding the height of the fan-shaped clamping rod by using the cutter, and enabling the processed blank material to be as shown in figure 3;
(6) the milling machine is changed with a cutter B8, a cutter B8 is used for processing and forming a small arc surface of the fan-shaped clamping rod, and the processing parameters of the cutter B8 are as follows: the feeding speed is 5m/min, the feeding amount is 0.01mm, the processed blank material is shown in figure 4, and the shape of the finally processed fan-shaped clamping rod 9 is shown in figure 7.
The length of the blank material in the step (1) is 90mm, the height is 0.9mm, and the width is 0.5 mm.
The processing parameters during high-speed milling in the step (2) are as follows: the rotating speed is 6000r/min, the feeding speed is 5m/min, and the feeding amount is 0.01 mm.
In the step (5), the processing parameters of the cutter are as follows: the rotating speed is 6000r/min, the feeding speed is 5m/min, and the feeding amount is 0.01 mm.
Anchor clamps A1 includes dog A3 and dog a4, and dog A3 and dog a4 pass through bolted connection, and dog A3 is close to one side upper end of dog a4 and sets up cuboid recess A, treats that the processing blank material is placed in recess A, presss from both sides tightly the blank material through bolt tightening dog A and dog a.
Anchor clamps B2 includes dog B5 and dog B6, dog B5 and dog B6 pass through bolted connection, dog B5 sets up recess B near one side upper end of dog B6, dog B sets up recess B near one side upper end of dog B, recess B lower surface radian is unanimous with fan-shaped clamping rod great circle arc face radian, recess B side is unanimous with fan-shaped clamping rod side inclination, recess B is unanimous with recess B shape, the great circle arc face place end of tight fan-shaped clamping rod is pressed from both sides through recess B and recess B lock.
Anchor clamps A1 and anchor clamps B2 are the mould steel material, and mould steel non-deformable, and the processing depth of parallelism is 0.02mm, guarantees to wait to process blank material atress even, avoids causing the fracturing damage, and anchor clamps A and anchor clamps B can directly adsorb on milling machine magnetic operation platform, easy to assemble simultaneously.
The cutter A7 is a tapered plate, the inclination angle and length of the two sides of the cutter A are consistent with those of the two sides of the sector clamping rod, and the schematic view of the installation structure of the cutter A is shown in FIG. 5.
Cutter B includes the rectangular plate, and rectangular plate one side processing has the cambered plate, and the radian of cambered plate is unanimous with the radian of the small circle cambered surface of fan-shaped supporting rod, through cutter B's feeding with the blank material processing out fan-shaped supporting rod small circle cambered surface, cutter B mounting structure schematic diagram is shown in FIG. 6.
Example 2:
the operation steps of the processing method of the fan-shaped clamping rod are as described in embodiment 1, except that the blank material in the step (1) is 190mm in length, 1.6mm in height and 0.8mm in width.
Step (2): the blank material is processed into a height of 1.3mm and a width of 0.6 mm. The processing parameters during high-speed milling are as follows: the rotating speed is 30000r/min, the feeding speed is 15m/min, and the feeding amount is 0.03 mm.
And (3): the broaching tool processing parameters are as follows: the feeding speed is 15m/min, and the feeding amount is 0.03 mm.
And (4): the machining parameters of the cutter A are as follows: the feeding speed is 15m/min, and the feeding amount is 0.03 mm;
and (5): the machining parameters of the cutter are as follows: the rotating speed is 30000r/min, the feeding speed is 15m/min, and the feeding amount is 0.03 mm. And (6): the processing parameters of the cutter B are as follows: the feeding speed is 15m/min, and the feeding amount is 0.03 mm.
Claims (9)
1. The machining method of the sector clamping rod is characterized by comprising the following steps of:
(1) mounting a cutter on a milling machine, fixing the blank material on an operation table of the milling machine, and processing the blank material into a long strip shape by using the cutter;
(2) fixing the strip-shaped blank material on a fixture A, fixing the fixture A on a milling machine operating table, then milling six surfaces of the blank material at a high speed, and processing the blank material into a height of 0.6-1.3mm and a width of 0.3-0.6 mm;
(3) the milling machine reloads the broaching tool, and the circular arc of broaching tool is unanimous with the radian of the major arc face on the fan-shaped supporting rod, utilizes the broaching tool to carry out machine-shaping with the major arc face on the fan-shaped supporting rod, and the broaching tool machining parameter is: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm;
(4) the milling machine changes the cutter A, and two inclined planes of the fan-shaped clamping rod are machined and formed, and the machining parameters of the cutter A are as follows: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm;
(5) changing a cutter by the milling machine, fixing the major arc surface of the blank downwards to a clamp B, fixing the clamp B to a milling machine operating table, and milling the height part of the blank material exceeding the fan-shaped clamping rod by the cutter;
(6) the milling machine changes the cutter B, the cutter B is utilized to machine and shape the small arc surface of the fan-shaped clamping rod, and the machining parameters of the cutter B are as follows: the feeding speed is 5-15m/min, and the feeding amount is 0.01-0.03 mm.
2. The method of manufacturing a fan-shaped holder bar according to claim 1, wherein the blank in the step (1) has a length of 90 to 190mm, a height of 0.9 to 1.6mm and a width of 0.5 to 0.8 mm.
3. The machining method of a sector clamping bar according to claim 1, wherein the machining parameters during high-speed milling in the step (2) are as follows: the rotating speed is 6000-.
4. The method for processing a fan-shaped clamping bar according to claim 1, wherein the tool processing parameters in the step (5) are as follows: the rotating speed is 6000-.
5. The method for processing the fan-shaped clamping rod as claimed in claim 1, wherein the fixture A comprises a stop A and a stop a, the stop A and the stop a are connected through a bolt, a cuboid groove A is formed in the upper end of one side, close to the stop a, of the stop A, and a blank to be processed is placed in the groove A.
6. The method as claimed in claim 5, wherein the fixture B comprises a block B and a block B, the block B and the block B are connected by a bolt, a groove B is formed at the upper end of the block B near the block B, a groove B is formed at the upper end of the block B near the block B, the radian of the lower surface of the groove B is consistent with the radian of the major arc surface of the fan-shaped clamping rod, the inclination angle of the side surface of the groove B is consistent with that of the side surface of the fan-shaped clamping rod, and the shape of the groove B is consistent with that of the groove B.
7. The method as claimed in claim 6, wherein the jigs A and B are made of die steel.
8. The method of manufacturing a fan-shaped holder according to claim 1, wherein the cutter a is a tapered plate, and the inclination angle and length of both sides of the cutter a are identical to those of both sides of the fan-shaped holder.
9. The method as claimed in claim 1, wherein the cutter B comprises a rectangular plate, one side of which is formed with a cambered plate, and the radian of the cambered plate is identical to that of the small circular cambered surface of the fan-shaped clamping rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920015.5A CN112264649B (en) | 2020-09-04 | 2020-09-04 | Machining method of fan-shaped clamping rod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010920015.5A CN112264649B (en) | 2020-09-04 | 2020-09-04 | Machining method of fan-shaped clamping rod |
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| CN112264649A CN112264649A (en) | 2021-01-26 |
| CN112264649B true CN112264649B (en) | 2021-10-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3780144B2 (en) * | 2000-03-15 | 2006-05-31 | オリンパス株式会社 | Work reversing device |
| CN103072016A (en) * | 2012-12-27 | 2013-05-01 | 安徽铜陵科力阀门有限责任公司 | Valve rod machining device with conical degree |
| CN105196012A (en) * | 2015-09-23 | 2015-12-30 | 四川飞亚汽车零部件有限公司 | Novel process for processing crankshaft |
| CN106312474A (en) * | 2016-11-24 | 2017-01-11 | 陕西启源科技发展有限责任公司 | Method for machining large-diameter thin-wall coupling shaft |
| CN109014354A (en) * | 2018-07-25 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A method of processing rivet heads of turbine blades on milling machine |
| CN208528830U (en) * | 2018-07-19 | 2019-02-22 | 宜宾红星电子有限公司 | Travelling-wave tubes ceramics supporting rod attrition process tooling |
-
2020
- 2020-09-04 CN CN202010920015.5A patent/CN112264649B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3780144B2 (en) * | 2000-03-15 | 2006-05-31 | オリンパス株式会社 | Work reversing device |
| CN103072016A (en) * | 2012-12-27 | 2013-05-01 | 安徽铜陵科力阀门有限责任公司 | Valve rod machining device with conical degree |
| CN105196012A (en) * | 2015-09-23 | 2015-12-30 | 四川飞亚汽车零部件有限公司 | Novel process for processing crankshaft |
| CN106312474A (en) * | 2016-11-24 | 2017-01-11 | 陕西启源科技发展有限责任公司 | Method for machining large-diameter thin-wall coupling shaft |
| CN208528830U (en) * | 2018-07-19 | 2019-02-22 | 宜宾红星电子有限公司 | Travelling-wave tubes ceramics supporting rod attrition process tooling |
| CN109014354A (en) * | 2018-07-25 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A method of processing rivet heads of turbine blades on milling machine |
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