CN111659907A - Equal-thickness turning flexible mechanism and method for gamma-shaped section frame welding section - Google Patents

Equal-thickness turning flexible mechanism and method for gamma-shaped section frame welding section Download PDF

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Publication number
CN111659907A
CN111659907A CN202010432539.XA CN202010432539A CN111659907A CN 111659907 A CN111659907 A CN 111659907A CN 202010432539 A CN202010432539 A CN 202010432539A CN 111659907 A CN111659907 A CN 111659907A
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CN
China
Prior art keywords
turning
section
gamma
flexible mechanism
rod
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Pending
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CN202010432539.XA
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Chinese (zh)
Inventor
胡明华
石正波
沈宏华
乐斌
吴小伟
方捷民
王谌辉
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Shanghai Space Precision Machinery Research Institute
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Shanghai Space Precision Machinery Research Institute
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Priority to CN202010432539.XA priority Critical patent/CN111659907A/en
Publication of CN111659907A publication Critical patent/CN111659907A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B5/00Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B25/00Accessories or auxiliary equipment for turning-machines
    • B23B25/02Arrangements for chip-breaking in turning-machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B25/00Accessories or auxiliary equipment for turning-machines
    • B23B25/06Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work

Abstract

The invention provides a gamma section frame welding section equal-thickness turning flexible mechanism, which comprises a few-type slide rod, a turning flexible mechanism, a turning tool and a pressing wheel, wherein the few-type slide rod comprises an n-type structure end and a support rod end, the pressing wheel and the turning tool are both arranged on the n-type structure end, and the turning flexible mechanism is sleeved on the support rod end. The turning process is stable and reliable, and the processing quality is improved.

Description

Equal-thickness turning flexible mechanism and method for gamma-shaped section frame welding section
Technical Field
The invention relates to the technical field of machining, in particular to a mechanism and a method for turning a welding section of a section bar frame at the bottom of a carrier rocket storage box in an equal thickness mode, and particularly relates to a mechanism and a method for turning a welding section of a gamma section bar frame in an equal thickness mode.
Background
In the aerospace field, a carrier rocket storage tank is a fuel storage container, the storage tank is formed by annularly welding a front tank bottom and a rear tank bottom with a plurality of cylinder sections, the tank bottom structure comprises a gamma section frame, a circular ring, a top cover and the like, a main material is aluminum alloy, the gamma section frame is of a variable thickness structure, and before the tank bottom and the cylinder sections are butted, the gamma section frame in a butt joint area (about 25-30mm) is often required to be subjected to inner profile processing to ensure that the thicknesses of the welding areas are consistent.
The gamma-shaped material frame is a gamma-shaped structure, the diameter is about 2.9 to 5 meters, the wall thickness is generally 4 to 8mm, the gamma-shaped material frame is a large thin-wall structural member, and due to the large diameter, the thin wall thickness and the large roundness difference, the roundness state of the gamma-shaped material frame cannot be guaranteed to meet the wall thickness tolerance requirement by adopting turning processing. In order to ensure the uniformity of the turning wall thickness, the roundness of a turning workpiece of a gamma-shaped material frame is adjusted by mainly adopting a tool shape correcting mode and a roundness correcting tool and is locally corrected by a jacking device, the assembling and operating processes are complex, the working efficiency is low, and the roundness is difficult to correct to a complete roundness state.
Patent document CN102672204A discloses a mixing drum rounding device, which comprises a lathe part and a bracket part; the lathe part comprises a tool rest mechanism, a power system, a base and a guide rail; the support part comprises a power system, a coupling, an axial support and a workpiece support. Wherein the guide rail, the power system of the lathe part, the power system of the bracket part, the coupling and the axial bracket are separated from each other and are respectively and independently arranged on the cement base. The lathe part is mainly responsible for the feeding and the left and right translation of cutter, and the support part is responsible for supporting the churn and around the rotation of axis and turning, but this equipment is not applicable to the correction of gamma section bar frame, and structural design is unreasonable.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a constant-thickness turning flexible mechanism and method for a gamma-shaped section frame welding section.
The invention provides a gamma-section frame welding section equal-thickness turning flexible mechanism which comprises a n-shaped sliding rod, a turning flexible mechanism, a turning tool and a pressing wheel, wherein the n-shaped sliding rod is fixed on the turning flexible mechanism;
the n-shaped sliding rod comprises an n-shaped structure end and a supporting rod end;
the pinch roller and the turning tool are both arranged on the n-shaped structure end, and the turning flexible mechanism is sleeved on the supporting rod end.
Preferably, the n-type structure end comprises a connecting cross rod, a first vertical rod and a second vertical rod;
the first vertical rod and the second vertical rod are respectively arranged at two ends of the connecting cross rod;
the supporting rod end is arranged on the second vertical rod;
the lathe tool is installed on first montant.
Preferably, the device further comprises a wheel shaft and a tool rest;
the pinch roller is arranged on the connecting cross rod through a wheel shaft;
the turning flexible mechanism is arranged on the tool rest.
Preferably, the connecting cross rod, the first vertical rod and the second vertical rod form a square space together, wherein the turning tool is vertically installed on the first vertical rod and arranged in parallel with the connecting cross rod, and the distance between the tool tip of the turning tool and the connecting cross rod is not less than 80 mm;
the wheel shaft is vertically arranged on the connecting transverse rod and is parallel to the first vertical rod, and the distance between the wheel shaft and the first vertical rod is not less than 60 mm.
Preferably, one end of the connecting cross rod, which is provided with the turning flexible mechanism, is of a step structure;
the connecting cross rod comprises a guide section, a spring mounting section and a thread adjusting section which are connected in sequence.
Preferably, the turning flexible mechanism comprises a guide sleeve, a compression spring, a stop cover and an adjusting nut;
the guide sleeve is sleeved on the connecting cross rod, a first accommodating space is formed between the guide sleeve and the spring mounting section on the connecting cross rod, and the compression spring is sleeved on the spring mounting section and is mounted in the first accommodating space;
the stop cover is sleeved on the thread adjusting section, the adjusting nut is installed at the free end of the thread adjusting section in a matched mode, and when the flexible mechanism is in turning operation, the adjusting nut is adjusted to enable the compression spring to be in a compression state.
Preferably, the compressible amount of the compression spring is not less than 40mm, and the spring stiffness is 16-30N/mm.
Preferably, the guide sleeve further comprises a plurality of flat keys, a plurality of key grooves are uniformly or non-uniformly arranged on the guide section along the circumferential direction, a plurality of sliding grooves are formed in the guide sleeve, and the key grooves and the sliding grooves form a second accommodating space;
the flat keys are arranged in the second accommodating space, and the guide sleeves can slide along the length direction of the flat keys relative to the connecting cross rod under the guidance of the flat keys under the action of external force.
Preferably, the circumferential direction of the pressing wheel is a circular arc surface, and the radius of the circular arc surface is 10-15 mm.
According to the equal-thickness turning method for the gamma section frame welding section, which is provided by the invention, the equal-thickness turning flexible mechanism for the gamma section frame welding section comprises the following steps:
step 1: connecting the bottom of the box to be processed to a transfer tool, fixing the transfer tool on a lathe platform, enabling a gamma section frame to face upwards, and adjusting the center of the bottom of the box to be consistent with the center of the lathe platform;
step 2: mounting a turning tool on the slide bar with the shape of a Chinese character ji and adjusting the distance between the turning tool and the outer edge of the roller to be equal to the turning thickness of the gamma-shaped frame;
and step 3: the turning flexible mechanism is horizontally and fixedly arranged on the tool rest;
and 4, step 4: rotating the lathe, slowly attaching a pressing wheel to the outer side of the gamma-shaped section frame, and moving a tool rest centripetally to pre-press a compression spring of the flexible mechanism for 10-20 mm;
and 5: and (3) setting the turning speed and the feeding amount according to the turning amount parameters of the aluminum alloy, and processing the turning section by adopting vertical feeding.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the connecting structure of the n-shaped sliding rod, the turning flexible mechanism, the turning tool and the pressing wheel, the turning flexible mechanism is pressed against the outer surface of the section frame to be processed during operation, only the box bottom is simply adjusted and installed, roundness correction of the gamma section frame is not needed, the turning of a section frame welding section with uniform thickness can be realized, and equal wall thickness turning of the gamma section frame with roundness deviation can be realized.
2. The height distance between the plane where the maximum excircle of the compression wheel is located and the turning point of the turning tool is 3-5mm, so that the matching angle between the compression wheel and the turning tool during the turning operation of the gamma-shaped frame is ensured, and the quality of the turning operation is improved.
3. According to the invention, one end of the flexible turning mechanism connected with the cross rod is of a step structure, the guide section, the spring mounting section and the thread adjusting section are arranged, the compression spring is mounted on the spring mounting section, and the flat key is arranged on the guide section, so that elastic sliding of the guide sleeve is realized, and the processing quality of flexible turning is effectively realized.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention during a turning operation;
fig. 3 is a schematic structural diagram of a side surface of a slide bar of several types.
The figures show that:
machine platform 13 of tool rest 7 of slide bar 1
The wheel shaft 8 of the guide sleeve 2 is connected with a cross bar 14
Flat key 3 turning tool 9 first vertical rod 15
Second vertical rod 16 of compression spring 4 pinch roller 10
Cover 5 gamma section bar frame 11
Adjusting nut 6 switching frock 12
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a gamma-section frame welding section equal-thickness turning flexible mechanism, which comprises an n-shaped sliding rod 1, a turning flexible mechanism, a tool rest 7, a turning tool 9 and a pressing wheel 10, wherein the n-shaped sliding rod 1 comprises an n-shaped structure end and a support rod end, the pressing wheel 10 and the turning tool 9 are both arranged on the n-shaped structure end, the turning flexible mechanism is sleeved on the support rod end, the turning flexible mechanism is arranged on the tool rest 7, a mounting hole of a wheel shaft 8 and a mounting hole of the turning tool 7 are arranged in a deflected mode, and the pressing point of the pressing wheel 10 is consistent with the position of the tool tip of the turning tool 7. In a preferred embodiment, the tool holder 7 on the guide sleeve 2 is clamped in the same plane and on the same side of the support rod end as the n-shaped structure end of the several-type slide bar 1.
Further, as shown in fig. 1 and 2, turning points are formed on the turning tool 9 and the inner surface of the γ -shaped frame 11, the outer surface of the pressing wheel 10 corresponding to the turning points is flexibly pressed, the distance between the turning points and the pressing wheel 10 is the remaining thickness of the γ -shaped frame 11 after turning, and the distance between the turning points and the pressing wheel is ensured by adjusting the distance between the turning tool 9 and the turning points.
Specifically, as shown in fig. 1, fig. 2, and fig. 3, the n-type structure end includes a connecting cross rod 14, a first vertical rod 15, and a second vertical rod 16, the first vertical rod 15 and the second vertical rod 16 are respectively disposed at two ends of the connecting cross rod 14 and form an n-type structure, the support rod end is mounted on the second vertical rod 16, and the turning tool 9 is mounted on the first vertical rod 15. The turning tool 9 is horizontally installed, and the tool tip is positioned at the lower part. In a preferred embodiment, the connecting cross bar 14 is integrally connected to the first and second vertical bars 15, 16, respectively.
Specifically, as shown in fig. 1 and fig. 2, the connecting device further includes an axle 8, the pressing wheel 10 is mounted on the connecting cross bar 14 through the axle 8, and in a preferred embodiment, a bearing is disposed between the pressing wheel 10 and the axle 8, and the bearing is in interference fit with the pressing wheel 10.
Specifically, as shown in fig. 1 and 2, the connecting cross bar 14, the first vertical bar 15, and the second vertical bar 16 together form a square space, wherein the turning tool 9 is vertically installed on the first vertical bar 15 and arranged in parallel with the connecting cross bar 14, a distance between a tool tip of the turning tool 9 and the connecting cross bar 14 is not less than 80 mm, the axle 8 is vertically installed on the connecting cross bar 14 and arranged in parallel with the first vertical bar 15, and a distance between the axle 8 and the first vertical bar 15 is not less than 60 mm. In a preferred embodiment, the height distance between the plane of the largest excircle of the pressing wheel 10 and the turning point of the turning tool 9 is 3-5 mm.
Specifically, as shown in fig. 1 and 2, one end of the connecting cross bar 14, at which the turning flexible mechanism is installed, is a stepped structure, and the connecting cross bar 14 includes a guide section, a spring installation section, and a thread adjusting section, which are connected in sequence. In a preferred embodiment, the connecting cross bar 14 adopts a step structure formed by concentrically arranging a plurality of cylindrical structural bodies with different diameters; in a variation, the connecting cross rod 14 adopts a step structure formed by concentrically arranging a plurality of prism structure bodies with different sizes, the structure is flexible, the form is various, the design can be flexible according to practical application, correspondingly, the structure of the spring mounting section can be matched with the compression action of the compression spring 4, and the normal sliding of the turning flexible mechanism is ensured.
Specifically, as shown in fig. 1 and 2, the flexible turning mechanism includes a guide sleeve 2, a compression spring 4, a blocking cover 5 and an adjusting nut 6, the guide sleeve 2 is sleeved on a connecting cross rod 14, a first accommodating space is formed between the guide sleeve 2 and a spring mounting section on the connecting cross rod 14, the compression spring 4 is sleeved on the spring mounting section and is installed in the first accommodating space, the blocking cover 5 is sleeved on a thread adjusting section, the adjusting nut 6 is matched with the mounting adjusting nut 6 from the free end of the thread adjusting section, and when the flexible turning mechanism is in operation, the adjusting nut 6 is adjusted and the compression spring 4 is in a compression state by screwing in or screwing out along the direction of the length of the thread adjusting section. In a preferred embodiment, as shown in fig. 1 and 2, the compressible amount of the compression spring 4 is not less than 40mm, and the spring stiffness is 16-30N/mm.
Further, a few type slide bars 1 and uide bushing 2 cooperation assembly adopt flat key 3 restriction rotation and form the slip pair, keep off lid 5 and uide bushing 2 screwed connection, compression spring 4 installs at a few type slide bars 1 afterbody, adjusts the compression spring volume through adjusting nut 6, forms the flexible support, adjusts the distance of pinch roller 10 and lathe tool 9 through adjusting nut 6, adapts to different turning thickness, and pinch roller 10 flexible support is outside the section bar frame.
Specifically, as shown in fig. 1 and fig. 2, the guide device further includes a plurality of flat keys 3, a plurality of key grooves are uniformly or non-uniformly arranged on the guide section along the circumferential direction, a plurality of sliding grooves are arranged inside the guide sleeve 2, the key grooves and the sliding grooves form a second accommodating space, the flat keys 3 are installed in the second accommodating space, and the guide sleeve 2 can slide along the length direction of the flat keys 3 under the guidance of the plurality of flat keys 3 relative to the connecting cross rod 14 under the action of external force.
Specifically, as shown in fig. 1 and 2, the circumferential direction of the pressing wheel 10 is an arc surface, and the radius of the arc surface is 10-15 mm.
The invention provides a method for turning a gamma-shaped section frame welding section with equal thickness, which is realized by adopting a gamma-shaped section frame welding section equal thickness turning flexible mechanism, and has the following specific operation principle:
firstly, connecting a box bottom to be processed to a transfer tool 12, fixing the transfer tool 12 on a lathe platform 13, enabling a gamma section frame to face upwards, and adjusting the center of the box bottom to be consistent with the center of the lathe platform; secondly, a turning tool 9 is installed on the n-shaped sliding rod 1, the distance between the turning tool and the outer edge of the roller 10 is adjusted to be equal to the turning thickness of the gamma-shaped frame, and then the turning flexible mechanism is horizontally placed and fixedly installed on the tool rest 7; thirdly, rotating the lathe, slowly attaching the pressing wheel 10 to the outer side of the gamma-shaped section frame, and performing 10-20mm pre-pressing on the compression spring 4 of the flexible mechanism by using the centripetal moving tool rest 7; and finally, setting the turning speed and the feeding amount according to the turning amount parameters of the aluminum alloy, and machining the turning section by adopting vertical feeding.
The invention provides an equal-thickness turning flexible mechanism and a turning method for a welding section of an aluminum alloy gamma section frame, which are suitable for equal-thickness turning of a large-diameter section frame welding section of the bottom of a carrier rocket storage box, the turning flexible mechanism can realize equal-wall-thickness turning of the section frame with roundness deviation, a fixed tool is adopted to fix the bottom of the box to be turned on a lathe rotating table, the center of the bottom of the box is adjusted to be positioned at the center of the rotating table and is pressed and fixed, the turning flexible mechanism is pressed against the outer surface of the section frame to be processed, the running track of a turning tool 9 is controlled through the turning flexible mechanism to ensure the consistency of turning thickness, the turning flexible mechanism is radially assembled on a tool rest 7, the turning flexible mechanism and an n-shaped sliding rod 1 form sliding connection through a guide sleeve 2 and a flat key 3, and elastic bracing is.
According to the invention, the pressing wheel 10 of the turning flexible mechanism can keep the rest workpieces tightly attached all the time, a larger inverted V-shaped sliding rod is adopted to form a chip removal area with a larger space, the distance between the turning tool 9 and the pressing wheel 10 is adjusted, stable thickness control is ensured, the flexible mechanism is adopted, the requirement on roundness correction of the workpieces is reduced, and the section frame welding section with uniform wall thickness can be turned by adopting a common vertical lathe.
Example (b):
taking the machining of a gamma section frame 11 with the diameter of phi 3800mm and the machining of a welded section 30mm for machining a box bottom gamma section frame with the residual wall thickness of 8mm as an example, the machining process is as follows:
as shown in fig. 1 and 2, a pinch roller 10 is arranged in an n-shaped structure end of a few-type slide bar 1 through a wheel shaft 8 and is locked and fixed through a nut; the turning tool 9 is installed on the first vertical rod 15 of the slide rod 1 and faces the n-shaped structure end, is horizontally placed, adjusts the distance from the tool nose to the roller to be 8mm, and is fixed through a set screw. A flat key 3 is arranged at the end of a support rod on a n-shaped slide rod 1, the flat key 3 is sleeved in a sliding groove of a guide sleeve 2 in a aligning way, a clamping block and the n-shaped structure end of the n-shaped slide rod 1 are in the same plane, a compression spring 4 is arranged at the tail part of the n-shaped slide rod 1, and a blocking cover 5 and an adjusting nut 6 are arranged.
Further, the box bottom to be machined is connected to a transfer tool 12, the transfer tool 12 is fixed on a lathe platform 13, a gamma-shaped section frame faces upwards, the center of the box bottom is adjusted to be consistent with the center of the lathe platform 13, a turning flexible mechanism is horizontally arranged on a tool rest 7, the turning flexible mechanism is kept horizontal, and the turning flexible mechanism is fastened by screws; rotating a lathe platform, measuring the minimum point of the gamma section frame from the center, slowly attaching a pressing wheel 10 to the outer side of the gamma section frame, and pre-pressing a turning flexible mechanism compression spring 4 by about 15mm by a centripetal moving tool rest 7, so that the compression spring keeps a certain pressing force in the whole turning process; and starting a lathe platform, tightly attaching the pressing wheel 10 to the outer surface of the gamma-shaped section frame under the action of the tension of the compression spring, extending and contracting the turning flexible mechanism along with the change of roundness, and processing a 30mm welding section on the inner surface of the gamma-shaped section frame according to normal aluminum alloy turning quantity parameters, namely turning speed, feeding quantity and the like.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A gamma section frame welding section equal thickness turning flexible mechanism is characterized by comprising a n-shaped sliding rod (1), a turning flexible mechanism, a turning tool (9) and a pressing wheel (10);
the n-shaped sliding rod (1) comprises an n-shaped structure end and a supporting rod end;
the pressing wheel (10) and the turning tool (9) are both installed on the n-shaped structure end, and the turning flexible mechanism is sleeved on the supporting rod end.
2. The gamma-section frame welded section equal-thickness turning flexible mechanism is characterized in that the n-type structure end comprises a connecting cross rod (14), a first vertical rod (15) and a second vertical rod (16);
the first vertical rod (15) and the second vertical rod (16) are respectively arranged at two ends of the connecting cross rod (14);
the support rod end is arranged on a second vertical rod (16);
the turning tool (9) is installed on the first vertical rod (15).
3. The gamma-section frame welding section equal-thickness turning flexible mechanism is characterized by further comprising an axle (8) and a tool rest (7);
the pinch roller (10) is arranged on the connecting cross rod (14) through a wheel shaft (8);
the turning flexible mechanism is arranged on the tool rest (7).
4. The gamma-section frame welded section equal-thickness turning flexible mechanism is characterized in that the connecting cross rod (14), the first vertical rod (15) and the second vertical rod (16) form a square space together, wherein the turning tool (9) is vertically arranged on the first vertical rod (15) and is arranged in parallel with the connecting cross rod (14), and the distance between the tool tip of the turning tool (9) and the connecting cross rod (14) is not less than 80 mm;
the wheel shaft (8) is vertically arranged on the connecting transverse rod (14) and is parallel to the first vertical rod (15), and the distance between the wheel shaft (8) and the first vertical rod (15) is not less than 60 mm.
5. The gamma-section frame welding section equal-thickness turning flexible mechanism is characterized in that one end, where the turning flexible mechanism is installed, of the connecting cross rod (14) is of a step structure;
the connecting cross rod (14) comprises a guide section, a spring mounting section and a thread adjusting section which are connected in sequence.
6. The equal-thickness turning flexible mechanism for the gamma-section frame welding section is characterized by comprising a guide sleeve (2), a compression spring (4), a stop cover (5) and an adjusting nut (6);
the guide sleeve (2) is sleeved on the connecting cross rod (14), a first accommodating space is formed between the guide sleeve (2) and a spring mounting section on the connecting cross rod (14), and the compression spring (4) is sleeved on the spring mounting section and mounted in the first accommodating space;
keep off lid (5) suit just adjusting nut (6) match installation adjusting nut (6) from the free end of screw thread regulation section on the screw thread regulation section, work as during flexible mechanism turning operation, adjust adjusting nut (6) and make compression spring (4) be in compression state.
7. The gamma-section frame welded section equal-thickness turning flexible mechanism is characterized in that the compressible amount of the compression spring (4) is not less than 40mm, and the spring stiffness is 16-30N/mm.
8. The gamma-shaped frame welding section equal-thickness turning flexible mechanism is characterized by further comprising a plurality of flat keys (3), wherein a plurality of key grooves are uniformly or non-uniformly arranged on the guide section along the circumferential direction, a plurality of sliding grooves are arranged inside the guide sleeve (2), and the key grooves and the sliding grooves form a second accommodating space;
the flat keys (3) are arranged in the second accommodating space, and the guide sleeve (2) can slide along the length direction of the flat keys (3) relative to the connecting cross rod (14) under the guidance of the flat keys (3) under the action of external force.
9. The gamma-shaped frame welding section equal-thickness turning flexible mechanism is characterized in that the circumferential direction of the pressing wheel (10) is a circular arc surface, and the radius of the circular arc surface is 10-15 mm.
10. A method for turning a welded section of a gamma-shaped frame with equal thickness, which is characterized in that the flexible mechanism for turning the welded section of the gamma-shaped frame with equal thickness as claimed in any one of claims 1 to 9 is adopted, and comprises the following steps:
step 1: connecting the bottom of a box to be processed to a transfer tool (12), fixing the transfer tool (12) on a lathe platform (13), enabling a gamma section frame to face upwards, and adjusting the center of the bottom of the box to be consistent with the center of the lathe platform;
step 2: mounting a turning tool (9) on the slide bar (1) and adjusting the distance between the turning tool and the outer edge of the roller (10) to be equal to the turning thickness of the gamma-shaped frame;
and step 3: the turning flexible mechanism is horizontally and fixedly arranged on the tool rest (7);
and 4, step 4: rotating the lathe, slowly attaching a pressing wheel (10) to the outer side of the gamma-shaped section frame, and moving a tool rest (7) in a centripetal manner to pre-press a compression spring (4) of the flexible mechanism by 10-20 mm;
and 5: and (3) setting the turning speed and the feeding amount according to the turning amount parameters of the aluminum alloy, and processing the turning section by adopting vertical feeding.
CN202010432539.XA 2020-05-20 2020-05-20 Equal-thickness turning flexible mechanism and method for gamma-shaped section frame welding section Pending CN111659907A (en)

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Cited By (2)

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CN112355329A (en) * 2020-11-25 2021-02-12 隆昌山川机械有限责任公司 Metal processing knife rest
CN114433889A (en) * 2020-11-06 2022-05-06 华创天元实业发展有限责任公司 Copying turning process equipment

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JP2002239815A (en) * 2001-02-08 2002-08-28 Nakamura Tome Precision Ind Co Ltd Tool holder for modified cross-section work
CN1923457A (en) * 2006-09-13 2007-03-07 东南大学 Longitudinal feeding equipment adapted for non-round accessory turning
CN203817401U (en) * 2014-03-17 2014-09-10 上海航天精密机械研究所 Aluminum-alloy thin-wall curved-surface floating turning device
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CN204235236U (en) * 2014-09-24 2015-04-01 仙居县华乐机械有限公司 8-shaped side plate cylindrical turning fixture
CN205904455U (en) * 2016-08-26 2017-01-25 哈尔滨果岭科技发展有限公司 Almag thin wall curved surface turning device that floats

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114433889A (en) * 2020-11-06 2022-05-06 华创天元实业发展有限责任公司 Copying turning process equipment
CN114433889B (en) * 2020-11-06 2023-11-17 华创天元实业发展有限责任公司 Profiling turning process equipment
CN112355329A (en) * 2020-11-25 2021-02-12 隆昌山川机械有限责任公司 Metal processing knife rest
CN112355329B (en) * 2020-11-25 2023-10-03 隆昌山川机械有限责任公司 Metal working knife rest

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