CN112247175A - Tool for machining thin-walled cylinder by forward and reverse expansion of double-conical sleeve and tool installation method - Google Patents
Tool for machining thin-walled cylinder by forward and reverse expansion of double-conical sleeve and tool installation method Download PDFInfo
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- CN112247175A CN112247175A CN202011260070.2A CN202011260070A CN112247175A CN 112247175 A CN112247175 A CN 112247175A CN 202011260070 A CN202011260070 A CN 202011260070A CN 112247175 A CN112247175 A CN 112247175A
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- 238000003754 machining Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 7
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- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
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- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
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- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims description 3
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- 238000010923 batch production Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
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Abstract
A tool for machining a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve and a tool installation method belong to the field of machining. The thin-wall tube machining device comprises a first taper sleeve, a second taper sleeve, a mandrel and washers, wherein the first taper sleeve and the second taper sleeve are respectively sleeved on the mandrel, the washers are installed at two ends of the mandrel through locking nuts, and thin-wall tubes are to be machined. The tool cone sleeve is convenient to disassemble, the production efficiency is high, a process route for batch production can be formed, batch production is realized, the production cost is saved, and the benefit is improved.
Description
Technical Field
The invention relates to a tool for machining a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve and a tool mounting method, and belongs to the field of machining.
Background
Most of parts on the equipment have certain weight limit requirements on weight, and overweight is not allowed, so the parts generally adopt weight reduction structures such as common thin-wall cylindrical parts in design, but the structures bring certain difficulty to subsequent part processing.
For example, a thin-walled cylinder (as shown in fig. 2) is used in a device, and the thin-walled cylinder has high requirements on the dimensional accuracy, form and position tolerance and surface roughness of inner and outer circles. The total length of the part is 180mm, and the diameter of the inner circle
The tolerance range is 0 ~ 0.06, and final wall thickness is 0.9mm, interior, excircle surface roughness Ra3.2, and the axiality of interior circle and excircle is 0.05mm, and drum inner wall intermediate position has a thickness 1.5mm, and the width is the ring muscle of 3mm (mark 9 department in the attached figure 2) for the rigidity of fixed section of thick bamboo internal equipment and increase section of thick bamboo wall. The thin-wall cylinder part can be machined by turning in addition to gradual drawing forming and powerful spinning forming.
The two processing methods of gradual stretching forming and powerful spinning forming have complex working procedures, higher cost and lower finished product precision, and can only form a thin-wall cylinder part with a simple structure, the two methods cannot form the thin-wall cylinder part and can only adopt a turning process method, in addition, the thin-wall cylinder part has very thin wall thickness which is less than 1mm, although the middle part is provided with the annular rib, the radial rigidity is also very low, and the thin-wall cylinder part is easily subjected to the influence of factors such as cutting force, cutting heat, clamping force and the like in the turning process and is easy to generate processing deformation.
The existing turning method is characterized in that both inner circles and outer circles have allowance, the outer circle of a part is clamped under the condition of ensuring radial rigidity, the inner circle of a cylinder is machined to the size, and the size precision and the roundness of the inner wall of the part are ensured. Then, an ordinary single expansion sleeve and a matching mandrel are adopted to expand the inner circle on one side of the part ring rib, and the outer circle of the expansion side is processed on a lathe to the required size. Then, the expansion sleeve and the mandrel are detached and taken out, the expansion sleeve and the mandrel are installed on the expansion inner circle of the other side of the ring rib, the outer circle of the side is continuously machined to the required size, the processing scheme is that the cylinder is clamped by turning around twice, the outer circle of the cylinder is machined twice, a connecting cutter is arranged in the middle, the coaxiality and the size precision of the outer circle of the cylinder are not easy to guarantee, the production efficiency is low, and the expansion sleeve and the mandrel are not suitable for organizing mass production.
Therefore, it is necessary to provide a tool for forward and backward expanding and processing a thin-walled cylinder by using a double taper sleeve and a tool installation method, so as to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the problems that the expansion tool capable of avoiding the inner ring rib of the thin-walled cylinder to be machined is manufactured, the thin-walled cylinder to be machined is formed by one-time clamping and machining, the dimensional accuracy of the inner circle and the outer circle of the thin-walled cylinder to be machined and the coaxiality of the inner circle and the outer circle are ensured, and the clamping deformation of the thin-walled cylinder to be machined is easy to solve. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the tool for machining the thin-walled cylinder by positive and negative expansion of the double taper sleeves comprises a first taper sleeve, a second taper sleeve, a mandrel and washers, wherein the first taper sleeve and the second taper sleeve are respectively sleeved on the mandrel, and the washers are installed at two ends of the mandrel through locking nuts to wait for machining the thin-walled cylinder.
Preferably: an oil groove is processed on the outer wall of the second taper sleeve.
Preferably: the dabber includes dabber body and threaded rod, and the threaded rod is installed at both ends about the dabber body.
Preferably: the mandrel body is an olive-shaped double inverted cone.
Preferably: and central holes are processed at two ends of the mandrel. And expansion openings are processed on the first taper sleeve and the second taper sleeve. The utility model provides a frock of double taper sleeves positive and negative tight processing thin wall section of thick bamboo, includes first taper sleeve, second taper sleeve, dabber and dismantlement swivel nut, and the spindle is overlapped respectively and is equipped with first taper sleeve and second taper sleeve, and the processing of dismantlement swivel nut outer cylinder has the screw thread, and first taper sleeve and second taper sleeve are installed to the one end far away from relatively, and the interior hole suit of dismantling the swivel nut is on the dabber threaded rod.
Preferably: an oil groove is processed on the outer wall of the second taper sleeve.
Preferably: the dabber includes dabber body and threaded rod, and the threaded rod is installed at both ends about the dabber body.
Preferably: the mandrel body is an olive-shaped double inverted cone.
Preferably: and central holes are processed at two ends of the mandrel. And expansion openings are processed on the first taper sleeve and the second taper sleeve.
The invention provides a technical scheme for solving the problems of installation and disassembly of a tool for machining a thin-walled cylinder by positive and negative expansion of a double-cone sleeve, which comprises the following steps:
a tool mounting method for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve comprises the following steps:
the installation step:
step a, before use, firstly processing the excircle of a thin-walled cylinder to be processed on a lathe by using a thick-walled cylindrical blank and reserving the excircle, so as to ensure that a three-jaw chuck clamps the excircle of the thin-walled cylinder to be processed when the inner circle of the thin-walled cylinder to be processed is processed, and the wall of the thin-walled cylinder to be processed does not deform;
b, processing the inner circle and the middle ring rib of the thin-walled cylinder to be processed to required sizes;
step c, when in use, the first taper sleeve and the olive-shaped inverted cone (one side) in the middle of the mandrel are pre-assembled together;
step d, the first taper sleeve and the mandrel which are preassembled in the step c are installed into the barrel of the thin-wall barrel to be processed after the thin-wall barrel is processed in the step b, the distance between the right end face of the first taper sleeve and the left end face of the ring rib in the barrel is controlled to be L1, L1 is 8-12 mm, and when the first taper sleeve is reserved to be expanded, the axial displacement of the first taper sleeve towards the mandrel is reserved;
e, locking the first taper sleeve by using a washer and a locking nut, and ensuring that the distance between the right end face of the expanded first taper sleeve and the left end face of the inner ring rib of the cylinder is L3 and L3 is 2-4 mm;
step f, then, a second taper sleeve is arranged between the barrel body of the thin-walled barrel to be processed and the olive-shaped inverted cone at the other end of the mandrel, the distance between the left end face of the second taper sleeve and the right end face of the inner ring rib of the barrel is about L2, L2 is 8-12 mm, and when the second expansion taper sleeve is reserved, the second taper sleeve axially displaces towards the mandrel;
step g, locking the second taper sleeve by using a washer and a locking nut, and ensuring that the distance between the left end face of the second taper sleeve and the right end face of the inner ring rib of the barrel is about L4 after expansion, wherein L4 is 2-4 mm;
h, clamping the thin-walled cylinder to be machined on a lathe after the thin-walled cylinder to be machined is expanded in a two-way mode, clamping one end of a mandrel by three claws of a main shaft, pushing the other end of the mandrel to a central hole of the mandrel by a tip, aligning the mandrel, and machining the excircle of the thin-walled cylinder to be machined to a required size;
disassembling:
step i, after the thin-walled cylinder to be machined is machined, the thin-walled cylinder to be machined is dismounted from a lathe, locking nuts and gaskets at two ends are dismounted, a dismounting threaded sleeve is sleeved into one end of a mandrel from one side of a second threaded sleeve, an external thread of the dismounting threaded sleeve is firstly screwed with an internal thread of the second threaded sleeve on the same side, the dismounting threaded sleeve is screwed until a top pressing surface at the front end of the dismounting threaded sleeve is contacted with the end of the mandrel, the dismounting threaded sleeve is continuously pulled, the dismounting threaded sleeve does not move forwards axially any more at the moment, the second threaded sleeve is outwards driven by the external thread of the dismounting threaded sleeve to withdraw for a certain displacement, a gap is formed between the contraction of the second threaded sleeve and the inner circle of the thin-walled cylinder to be machined. Applying axial force to the mandrel from the other end of the thin-walled cylinder to be processed to separate the first taper sleeve from the mandrel, enabling the first taper sleeve to contract to form a gap with the inner circle of the thin-walled cylinder to be processed, continuously applying the axial force to withdraw the mandrel, and detaching the first taper sleeve;
and j, checking that the processed thin-walled cylinder to be processed is qualified according to the guarantee requirement.
The invention has the following beneficial effects:
1. according to the tool for machining the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve and the tool mounting method, the ring rib in the cylinder is effectively avoided, and the problem that the part needs to be expanded and clamped twice is solved;
2. according to the tool for machining the thin-wall cylinder by forward and reverse expansion of the double taper sleeve and the tool mounting method, the purpose of machining the outer circle of the thin-wall cylinder by clamping on a lathe at one time is realized, and the requirements on the dimensional accuracy and the coaxiality of the inner circle and the outer circle of the thin-wall cylinder are met;
3. according to the tool for machining the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve and the tool mounting method, the tool cone sleeve is convenient to disassemble, the production efficiency is high, a process route of batch production can be formed, the batch production is realized, the production cost is saved, and the benefit is improved;
4. the tool for machining the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve and the tool mounting method have the advantages that the dismounting method is simple, and the thread ejection structure is easy to realize;
5. the tool for machining the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve is simple in structure, ingenious in design, reasonable, practical, convenient to disassemble and assemble, firm in assembly, low in cost, strong in reproducibility and popularization of the structural principle, and suitable for popularization and use.
Drawings
FIG. 1 is a schematic structural view of a tool for machining a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve;
FIG. 2 is a perspective view of a thin-walled cylinder to be processed;
FIG. 3 is a schematic structural diagram of a second embodiment;
FIG. 4 is a schematic view of the installation of the first taper sleeve, the second taper sleeve and the mandrel;
FIG. 5 is an exploded view of FIG. 4;
FIG. 6 is a schematic view of the removable insert;
FIG. 7 is a perspective view of the removable insert;
FIG. 8 is an enlarged view taken at I of FIG. 1;
in the figure, 1-a thin-wall cylinder to be processed, 2-a first taper sleeve, 3-a second taper sleeve, 4-a mandrel, 5-a disassembly thread sleeve, 6-a gasket, 7-a locking nut, 8-an oil groove, 9-a ring rib, 10-an expansion opening, 31-a taper sleeve internal thread, 41-a mandrel body, 42-a threaded rod, 43-a central hole, 51-an inner hole and 52-an annular oil groove.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the tool for machining the thin-walled cylinder by positive and negative expansion of the double taper sleeve of the embodiment includes a first taper sleeve 2, a second taper sleeve 3, a mandrel 4 and a washer 6, as shown in fig. 1, the mandrel 4 is respectively sleeved with the first taper sleeve 2 and the second taper sleeve 3, the washer 6 is installed at two ends of the mandrel 4 through a lock nut 7, the diameter of the washer 6 is greater than the inner diameter of the outer end of the taper hole of the first taper sleeve 2 and the outer end of the taper hole of the second taper sleeve 3, the first taper sleeve 2 and the second taper sleeve 3 are provided with expansion openings 10, and the expansion structures of the first taper sleeve 2 and the second taper sleeve 3 avoid the limitation of a middle ring rib 9 in the thin-walled cylinder 1 to be machined, and. The coaxiality of the inner circle and the outer circle of the thin-wall cylinder is easy to guarantee in the turning process, the thickness of the cylinder wall is uniform, and the tool is used when the outer circle of the thin-wall cylinder is turned to the required final size;
during installation, the first taper sleeve 2 is firstly sleeved on one side of the mandrel 4 and fixedly installed through the washer 6 and the lock nut 7, the expansion degree between the first taper sleeve 2 and the mandrel 4 is low, the thin-walled cylinder 1 to be processed is installed on the outer side of the first taper sleeve 2, the lock nut 7 is adjusted to enable the inner wall of the thin-walled cylinder 1 to be processed and the outer wall of the first taper sleeve 2 to be expanded and installed, then the second taper sleeve 3 is installed, the second taper sleeve 3 is fixedly installed through the washer 6 and the lock nut 7, the lock nuts 7 on two sides are adjusted to enable the outer walls of the first taper sleeve 2 and the second taper sleeve 3 to be completely expanded and attached to the inner wall of the thin-walled cylinder 1 to be processed, and finally the installed workpiece tool assembly is installed on.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 7, and based on the first embodiment, the tool for machining a thin-walled cylinder by positive and negative expansion of a double-cone sleeve of the present embodiment includes a first cone sleeve 2, a second cone sleeve 3, a mandrel 4 and a dismounting screw sleeve 5, as shown in fig. 3, the mandrel 4 is respectively sleeved with the first cone sleeve 2 and the second cone sleeve 3, an outer cylindrical surface of the dismounting screw sleeve 5 is threaded, the dismounting screw sleeve 5 is installed at a far end of the first cone sleeve 2 and the second cone sleeve 3, an inner hole 51 of the dismounting screw sleeve 5 is sleeved on a threaded post of the mandrel 4, a top pressure surface of the dismounting screw sleeve 5 contacting with an end of the mandrel 4 is provided with an annular oil groove 52, expansion openings 10 are machined on the first cone sleeve 2 and the second cone sleeve 3, and expansion structures of the first cone sleeve 2 and the second cone sleeve 3 avoid the limitation of a middle ring rib 9 in the thin-walled cylinder 1 to be machined, because the tool of the present embodiment is a bidirectional reverse cone sleeve, after the thin-wall cylinder 1 to be processed is processed, the mandrel 4 is not easy to withdraw from one end to enable the diameter of the first taper sleeve 2 and the second taper sleeve 3 to shrink, and then the first taper sleeve 2 and the second taper sleeve 3 are disassembled, therefore, the disassembling screw sleeve 5 for disassembling the second taper sleeve 3 is added to the tool of the embodiment, the external thread of the disassembling screw sleeve 5 is screwed on the second taper sleeve 3 with the internal thread, the taper sleeve 3 at one end is ejected out during disassembling, the task of disassembling the tool is completed, the tool structure of the double taper sleeve and the olive-shaped inverted-cone-shaped mandrel 4 for expanding the thin-wall cylinder in the forward and reverse directions is adopted, the interference limitation of the middle ring rib of the thin-wall cylinder 1 to be processed is avoided, the difficult problem that the cylinder body of the thin-wall cylinder 1 to be processed is not easy to expand by adopting the matching of the single taper sleeve and the mandrel 4 is solved.
The third concrete implementation mode: with reference to fig. 1 to fig. 7, the embodiment is described, based on a first specific embodiment, in the tool for machining the thin-walled cylinder by forward and backward expansion of the double-tapered sleeve of the embodiment, an oil groove 8 is machined on the outer wall of the second tapered sleeve 3 along the direction of the excircle generatrix, and the oil groove 8 is used for reducing friction between the second tapered sleeve 3 and the inner wall of the thin-walled cylinder 1 to be machined when the second tapered sleeve 3 is disassembled; an annular oil groove 52 is formed in the top pressing surface of the dismounting screw sleeve 5, and is used for reducing friction between the top pressing surface of the dismounting screw sleeve 5 and the end surface of the mandrel 4, so that the second taper sleeve 3 can be taken out conveniently, and the dismounting screw sleeve 5 can be pushed and released to apply pressure.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and the tool for processing the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve of the embodiment includes a mandrel body 41 and a threaded rod 42, the threaded rod 42 is installed at the left end and the right end of the mandrel body 41, and the threaded rod 42 facilitates the thread fit installation of the lock nut 7, so that the relative fixing structure is more stable.
The fifth concrete implementation mode: the embodiment is described by combining fig. 1-7, and the tool for processing the thin-walled cylinder by positive and negative expansion of the double taper sleeve of the embodiment is characterized in that the mandrel body 41 is in an inverted cone shape, the olive-shaped inverted cones are two frustum bases arranged in mirror symmetry, the two ends of each frustum base are thin and the middle of each frustum base is thick, the first taper sleeve 2 and the second taper sleeve 3 are sleeved on the two sides of the mandrel body 41, the distance between the first taper sleeve 2 and the second taper sleeve 3 and the maximum center diameter of the mandrel body 41 is adjusted by disassembling the screw sleeves 5 or the lock nuts 7, the expansion opening 10 is opened, the diameter of the outer wall of the cone is increased, and then the inner wall expansion installation of the thin-walled cylinder 1 to be processed is completed, so that the size of the radial cross section of the first taper sleeve 2 and the second taper sleeve 3 is adjusted more flexibly, the expansion degree is higher.
The sixth specific implementation mode: the tool for machining the thin-walled cylinder by forward and reverse expansion of the double-conical sleeve is described with reference to fig. 1 to 7, and central holes 41 are machined at two ends of the mandrel 4, so that the tool is convenient to fixedly mount and align with a lathe.
The seventh embodiment: the embodiment is described with reference to fig. 1 to 7, and the method for installing the tool for forward and reverse expansion machining of the thin-walled cylinder by the double taper sleeves of the embodiment comprises the following installation steps:
step a, before use, firstly processing the excircle of the thin-wall cylinder 1 to be processed on a lathe by using a thick-wall cylindrical blank and reserving the excircle, and ensuring that a three-jaw chuck clamps the excircle of the thin-wall cylinder 1 to be processed when the inner circle of the thin-wall cylinder 1 to be processed is processed, and the cylinder wall of the thin-wall cylinder 1 to be processed is not deformed;
b, processing the inner circle and the middle ring rib of the thin-wall cylinder 1 to be processed to required sizes;
step c, when in use, the first taper sleeve 2 and the olive-shaped inverted cone in the middle of the mandrel 4 are preassembled together;
step d, the first taper sleeve 2 and the mandrel 4 which are preassembled in the step c are arranged in the barrel of the thin-wall barrel 1 to be processed after being processed in the step b, the distance between the ring ribs 9 on the right end face of the first taper sleeve 2 is controlled to be L1, the distance between the ring ribs L1 and the left end face of the ring ribs L1 is 8-12 mm, and when the first taper sleeve 2 is reserved to be expanded, the axial displacement of the first taper sleeve 2 towards the mandrel 4 is reserved;
step e, locking the first taper sleeve 2 by using a washer 6 and a lock nut 7, and ensuring that the distance between the right end face of the first taper sleeve 2 and the left end face of the ring rib 9 after expansion is L3 and L3 is 2-4 mm;
step f, then, a second taper sleeve 3 is arranged at the other end of the barrel body of the thin-wall barrel 1 to be processed and the mandrel 4, the distance between the left end face of the second taper sleeve 3 and the right end face of the ring rib 9 is about L2, L2 is 8-12 mm, and when the second taper sleeve 3 is reserved, the axial displacement of the second taper sleeve 3 towards the mandrel 4 is reserved;
step g, locking and locking the second taper sleeve 3 by using a washer 6 and a locking nut 7, and ensuring that the distance between the left end face of the second taper sleeve 3 and the right end face of the ring rib 9 after expansion is about L4, and L4 is 2-4 mm;
h, clamping the thin-walled cylinder 1 to be machined on a lathe after the thin-walled cylinder is expanded in a two-way mode, clamping one end of a mandrel 4 by three claws of a main shaft, pushing the other end of the mandrel 4 to a central hole 41 of the mandrel 4 by using a tip, aligning the mandrel 4, and machining the outer circle of the thin-walled cylinder 1 to be machined to a required size;
disassembling:
step i, after the thin-walled cylinder 1 to be processed is processed, the thin-walled cylinder 1 is dismounted from a lathe, locking nuts 7 and gaskets 6 at two ends are dismounted, a dismounting threaded sleeve 5 is sleeved into one end of a mandrel 4, an external thread of the dismounting threaded sleeve 5 is firstly screwed with an internal thread of a second taper sleeve 3 at the same side, the dismounting threaded sleeve 5 is screwed until a top pressing surface at the front end of the dismounting threaded sleeve 5 is contacted with the shaft end of the mandrel 4, the dismounting threaded sleeve 5 is pulled continuously, the dismounting threaded sleeve 5 does not move forwards axially at the moment, the second taper sleeve 3 is driven outwards by the external thread of the dismounting threaded sleeve 5 to withdraw for a certain displacement, the second taper sleeve 3 contracts to form a gap with the inner circle of the thin-walled cylinder 1 to be processed, and the taper sleeve 3 and the. Applying axial force to the mandrel 4 from the other end of the thin-walled cylinder 1 to be processed to separate the first taper sleeve 2 from the mandrel 4, enabling the first taper sleeve 2 to contract to form a gap with the inner circle of the thin-walled cylinder 1 to be processed, continuing applying axial force to withdraw the mandrel 4, and detaching the first taper sleeve 2;
and j, checking that the processed thin-walled cylinder 1 to be processed is qualified according to the guarantee requirement.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a frock of thin wall section of thick bamboo of positive and negative expansion processing of bipyramid cover which characterized in that: the novel taper sleeve comprises a first taper sleeve (2), a second taper sleeve (3), a mandrel (4) and gaskets (6), wherein the mandrel (4) is sleeved with the first taper sleeve (2) and the second taper sleeve (3) respectively, and the gaskets (6) are installed at two ends of the mandrel (4) through locking nuts (7).
2. The utility model provides a frock of thin wall section of thick bamboo of positive and negative expansion processing of bipyramid cover which characterized in that: the core shaft dismounting device comprises a first taper sleeve (2), a second taper sleeve (3), a core shaft (4) and a dismounting screw sleeve (5), wherein the core shaft (4) is sleeved with the first taper sleeve (2) and the second taper sleeve (3) respectively, the outer wall of the dismounting screw sleeve (5) is processed with threads, the dismounting screw sleeve (5) is installed at one end, far away from the first taper sleeve (2) and the second taper sleeve (3), and an inner hole (51) of the dismounting screw sleeve (5) is installed on the core shaft (4).
3. The tool for machining the thin-walled cylinder by forward and reverse expansion of the double conical sleeves according to claim 1 or 2, wherein the tool comprises: an oil groove (8) is machined in the outer wall of the second taper sleeve (3).
4. The tool for machining the thin-walled cylinder by forward and reverse expansion of the double conical sleeves according to claim 1 or 2, wherein the tool comprises: the mandrel (4) comprises a mandrel body (41) and a threaded rod (42), and the threaded rod (42) is installed at the left end and the right end of the mandrel body (41).
5. The tool for machining the thin-walled cylinder by forward and reverse expansion of the double-cone sleeve according to claim 4, is characterized in that: the mandrel body (41) is an olive-shaped inverted cone.
6. The tool for machining the thin-walled cylinder by forward and reverse expansion of the double conical sleeves according to claim 1 or 2, wherein the tool comprises: and central holes (43) are processed at two ends of the mandrel (4).
7. The tool for machining the thin-walled cylinder by forward and reverse expansion of the double conical sleeves according to claim 1 or 2, wherein the tool comprises: expansion openings (10) are processed on the first taper sleeve (2) and the second taper sleeve (3).
8. A tool mounting method for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve is characterized by comprising the following steps:
the installation step:
step a, before use, firstly processing the excircle of a thin-walled cylinder (1) to be processed on a lathe by using a thick-walled cylindrical blank and reserving the excircle, so as to ensure that a three-jaw chuck clamps the excircle of the thin-walled cylinder (1) to be processed when the inner circle of the thin-walled cylinder (1) to be processed is processed, and the wall of the thin-walled cylinder (1) to be processed is not deformed;
b, processing the inner circle and the middle ring rib (9) of the thin-walled cylinder (1) to be processed to required sizes;
step c, when in use, the first taper sleeve (2) and the olive-shaped inverted cone in the middle of the mandrel (4) are preassembled together;
d, the first taper sleeve (2) and the mandrel (4) which are preassembled in the step c are arranged in the barrel body of the thin-wall barrel (1) to be processed in the step b, the distance between the right end face of the first taper sleeve (2) and the left end face of the ring rib (9) is controlled to be L1, L1 is 8-12 mm, and when the first taper sleeve (2) is reserved to be expanded, the axial displacement of the first taper sleeve (2) towards the mandrel (4) is reserved;
e, locking the first taper sleeve (2) by using a washer (6) and a locking nut (7), and ensuring that the distance between the right end face of the first taper sleeve (2) and the left end face of the ring rib (9) after expansion is L3 and L3 is 2-4 mm;
step f, then a second taper sleeve (3) is arranged at the other end of the barrel body of the thin-wall barrel (1) to be processed and the mandrel (4), the distance between the left end face of the second taper sleeve (3) and the right end face of the ring rib (9) is about L2, L2 is 8-12 mm, and when the second taper sleeve (3) is reserved for expansion, the second taper sleeve (3) axially moves towards the mandrel (4);
step g, locking and locking the second taper sleeve (3) by using a washer (6) and a locking nut (7), and ensuring that the distance between the left end face of the second taper sleeve (3) and the right end face of the ring rib (9) is about L4 after expansion, wherein L4 is 2-4 mm;
h, clamping the thin-walled cylinder (1) to be machined on a lathe after two-way expansion, clamping one end of a mandrel (4) by three claws of a main shaft, pushing the other end of the mandrel (4) against a central hole (41) of the mandrel (4) by using a tip, aligning the mandrel (4), and machining the excircle of the thin-walled cylinder (1) to be machined to the required size;
disassembling:
step i, after the thin-walled cylinder (1) to be processed is processed, the thin-walled cylinder is dismounted from a lathe, locking nuts (7) and gaskets (6) at two ends are dismounted, a dismounting threaded sleeve (5) is sleeved into one end of a mandrel (4), an external thread of the dismounting threaded sleeve (5) is firstly screwed with an internal thread (31) of a second taper sleeve (3) at the same side, the dismounting threaded sleeve (5) is screwed until a top pressing surface at the front end of the dismounting threaded sleeve (5) is contacted with the shaft end of the mandrel (4), the dismounting threaded sleeve (5) is continuously pulled, the dismounting threaded sleeve (5) does not move forwards in the axial direction any more at the moment, the second taper sleeve (3) is driven outwards by the external thread of the dismounting threaded sleeve (5) to withdraw for a certain displacement, the second taper sleeve (3) contracts to form an inner circle with the thin-walled cylinder (1) to be processed, and the taper sleeve (3. Applying axial force to the mandrel (4) from the other end of the thin-walled cylinder (1) to be processed to separate the first taper sleeve (2) from the mandrel (4), enabling the first taper sleeve (2) to contract to form a gap with the inner circle of the thin-walled cylinder (1) to be processed, continuing applying the axial force to withdraw the mandrel (4), and detaching the first taper sleeve (2);
and j, checking that the processed thin-walled cylinder (1) to be processed is qualified according to the guarantee requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260070.2A CN112247175A (en) | 2020-11-12 | 2020-11-12 | Tool for machining thin-walled cylinder by forward and reverse expansion of double-conical sleeve and tool installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260070.2A CN112247175A (en) | 2020-11-12 | 2020-11-12 | Tool for machining thin-walled cylinder by forward and reverse expansion of double-conical sleeve and tool installation method |
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| Publication Number | Publication Date |
|---|---|
| CN112247175A true CN112247175A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011260070.2A Pending CN112247175A (en) | 2020-11-12 | 2020-11-12 | Tool for machining thin-walled cylinder by forward and reverse expansion of double-conical sleeve and tool installation method |
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| CN (1) | CN112247175A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021226A (en) * | 2021-03-03 | 2021-06-25 | 航天特种材料及工艺技术研究所 | Sleeving tool and sleeving method for upper closed type outer heat-proof layer of cabin section |
| CN115383160A (en) * | 2022-10-27 | 2022-11-25 | 宁波众鑫压铸模具有限公司 | Bipyramid internal expanding clamp of automobile motor shell |
| CN115780032A (en) * | 2023-02-08 | 2023-03-14 | 淄博启明星新材料股份有限公司 | Method for mounting main shaft of horizontal ball mill |
| CN118513838A (en) * | 2024-07-24 | 2024-08-20 | 中国船舶集团有限公司第七〇七研究所 | Coaxiality positioning device aligned and adjusted by hole, and use method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN2821260Y (en) * | 2005-09-16 | 2006-09-27 | 太原重型机械集团有限公司 | Oil film bearing with net type oil groove conic sleeve |
| CN201275744Y (en) * | 2008-08-12 | 2009-07-22 | 广西玉柴机器股份有限公司 | Tool for drawing copper cover in fuel oil injector hole |
| CN101596695A (en) * | 2009-07-10 | 2009-12-09 | 张志强 | A kind of fixture for grinding processing ultra-thin wall parts |
| CN108481192A (en) * | 2018-03-09 | 2018-09-04 | 宝鸡石油机械有限责任公司 | A kind of mill fixture and clamping method suitable for the long spacer of thin-walled |
| CN208556034U (en) * | 2018-07-12 | 2019-03-01 | 永济市贝特电气机械有限公司 | A kind of ringfeder mandrel of thin-wall pipe |
| CN213496574U (en) * | 2020-11-12 | 2021-06-22 | 航天科工哈尔滨风华有限公司 | Tool for machining thin-walled cylinder by positive and negative expansion of double taper sleeve |
-
2020
- 2020-11-12 CN CN202011260070.2A patent/CN112247175A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN2821260Y (en) * | 2005-09-16 | 2006-09-27 | 太原重型机械集团有限公司 | Oil film bearing with net type oil groove conic sleeve |
| CN201275744Y (en) * | 2008-08-12 | 2009-07-22 | 广西玉柴机器股份有限公司 | Tool for drawing copper cover in fuel oil injector hole |
| CN101596695A (en) * | 2009-07-10 | 2009-12-09 | 张志强 | A kind of fixture for grinding processing ultra-thin wall parts |
| CN108481192A (en) * | 2018-03-09 | 2018-09-04 | 宝鸡石油机械有限责任公司 | A kind of mill fixture and clamping method suitable for the long spacer of thin-walled |
| CN208556034U (en) * | 2018-07-12 | 2019-03-01 | 永济市贝特电气机械有限公司 | A kind of ringfeder mandrel of thin-wall pipe |
| CN213496574U (en) * | 2020-11-12 | 2021-06-22 | 航天科工哈尔滨风华有限公司 | Tool for machining thin-walled cylinder by positive and negative expansion of double taper sleeve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021226A (en) * | 2021-03-03 | 2021-06-25 | 航天特种材料及工艺技术研究所 | Sleeving tool and sleeving method for upper closed type outer heat-proof layer of cabin section |
| CN115383160A (en) * | 2022-10-27 | 2022-11-25 | 宁波众鑫压铸模具有限公司 | Bipyramid internal expanding clamp of automobile motor shell |
| CN115780032A (en) * | 2023-02-08 | 2023-03-14 | 淄博启明星新材料股份有限公司 | Method for mounting main shaft of horizontal ball mill |
| CN115780032B (en) * | 2023-02-08 | 2023-04-21 | 淄博启明星新材料股份有限公司 | Method for mounting main shaft of horizontal ball mill |
| CN118513838A (en) * | 2024-07-24 | 2024-08-20 | 中国船舶集团有限公司第七〇七研究所 | Coaxiality positioning device aligned and adjusted by hole, and use method and application thereof |
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