CN112247175B - A tooling and tooling installation method for double-taper sleeve positive and negative expansion processing of thin-walled cylinder - Google Patents
A tooling and tooling installation method for double-taper sleeve positive and negative expansion processing of thin-walled cylinder Download PDFInfo
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- CN112247175B CN112247175B CN202011260070.2A CN202011260070A CN112247175B CN 112247175 B CN112247175 B CN 112247175B CN 202011260070 A CN202011260070 A CN 202011260070A CN 112247175 B CN112247175 B CN 112247175B
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- 238000012545 processing Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 title claims abstract description 16
- 238000003754 machining Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000009987 spinning Methods 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
一种双锥套正反胀紧加工薄壁筒的工装及工装安装方法，属于机械加工领域。本发明包括第一锥套、第二锥套、芯轴和垫圈，芯轴上分别套装有第一锥套和第二锥套，垫圈通过锁紧螺母安装在芯轴两端，待加工薄壁筒。目的是为了解决制作一种能够避让待加工薄壁筒内环筋的胀紧工装，一次装夹加工成形，保证待加工薄壁筒的内、外圆尺寸精度和内、外圆同轴度，以解决车削此类薄壁筒装夹变形难的问题，实现了一次装夹在车床上加工薄壁筒件外圆的目地，保证了薄壁筒的内外圆尺寸精度和同轴度要求，工装锥套拆卸方便，生产效率高，并可形成批量生产的工艺路线，实现批量生产，节约生产成本，提高效益。
A tooling and tooling installation method for double-taper sleeve positive and negative expansion processing of thin-walled tubes, belonging to the field of mechanical processing. The present invention includes a first taper sleeve, a second taper sleeve, a core shaft and a washer, the core shaft is respectively provided with the first taper sleeve and the second taper sleeve, the washer is installed at both ends of the core shaft through a locking nut, and the thin-walled tube to be processed. The purpose is to solve the problem of making a tightening tooling that can avoid the inner ring ribs of the thin-walled tube to be processed, clamping and processing in one time, ensuring the inner and outer circle size accuracy and inner and outer circle coaxiality of the thin-walled tube to be processed, so as to solve the problem of difficult clamping deformation of such thin-walled tubes during turning, and realize the purpose of processing the outer circle of thin-walled tube parts on a lathe in one time, ensuring the inner and outer circle size accuracy and coaxiality requirements of the thin-walled tube, the tooling taper sleeve is easy to disassemble, the production efficiency is high, and a process route for mass production can be formed to realize mass production, save production costs, and improve efficiency.
Description
Technical Field
The invention relates to a tool and a tool mounting method for machining a thin-wall cylinder by forward and reverse expansion of a double-cone sleeve, and belongs to the field of machining.
Background
Most parts on the equipment have certain weight limiting requirements on weight, and overweight is not allowed, so the parts are generally designed to adopt weight reducing structures, such as common thin-wall cylindrical parts, but the structures bring certain difficulty to subsequent part processing.
For example, a thin-wall cylinder (shown in fig. 2) on a certain device has high requirements on the dimensional accuracy, form and position tolerance and surface roughness of the inner circle and the outer circle. The total length of the part is 180mm, and the diameter of the inner circleThe tolerance range is 0-0.06, the final wall thickness is 0.9mm, the surface roughness Ra3.2 of the inner circle and the outer circle is 0.05mm, and a ring rib (9 in the drawing 2) with the thickness of 1.5mm and the width of 3mm is arranged in the middle of the inner wall of the cylinder and used for fixing the internal equipment of the cylinder and increasing the rigidity of the cylinder wall. The thin-wall cylinder part can be processed by turning besides stepwise stretch forming and powerful spin forming.
The two processing methods of gradual stretch forming and forced spinning forming have complex procedures, higher cost and lower finished product precision, and can only form the thin-wall barrel with simple structure, the two methods can not realize the forming of the thin-wall barrel, in addition, the thin-wall cylinder part has a thin wall thickness of less than 1mm, is provided with a ring rib in the middle, has low radial rigidity, is influenced by factors such as cutting force, cutting heat and clamping force in the turning process, and is extremely easy to generate processing deformation.
The existing turning method is to clamp the outer circle of the part under the condition that the inner circle and the outer circle have the allowance, so that the radial rigidity is ensured, and firstly, the inner circle of the cylinder is machined to the size, so that the dimensional accuracy and the roundness of the inner wall of the part are ensured. And then, an inner circle at one side of the ring rib of the part is expanded by adopting a common single expansion sleeve and a matched mandrel, and the outer circle of the cylinder at the expansion side is processed on a lathe to a required size. Then, take out the tight cover that expands with the dabber, install the tight interior circle of opposite side expansion at the ring muscle, continue to process the excircle of this one side to the required size, this processing scheme is because the barrel is turned around twice, processes the barrel excircle twice, has the sword to produce in the middle, and axiality and the excircle dimensional accuracy of barrel are difficult for guaranteeing, and production efficiency is low moreover, is not fit for organizing batch production.
Therefore, it is needed to provide a tool and a tool mounting method for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve, so as to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the problem of easy deformation of clamping of a thin-wall cylinder in turning, and provides a brief summary of the invention below so as to provide basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme of the invention is as follows:
The utility model provides a frock of a biconical taper sleeve positive and negative expansion processing thin wall section of thick bamboo, includes first taper sleeve, second taper sleeve, dabber and packing ring, and the dabber is equipped with first taper sleeve and second taper sleeve respectively, and the packing ring passes through lock nut to be installed at dabber both ends, waits to process thin wall section of thick bamboo.
Preferably, an oil groove is processed on the outer wall of the second taper sleeve.
Preferably, the mandrel comprises a mandrel body and a threaded rod, wherein the threaded rod is arranged at the left end and the right end of the mandrel body.
Preferably, the mandrel body is an olive-shaped double back taper.
Preferably, the two ends of the mandrel are provided with central holes. Expansion openings are formed in the first taper sleeve and the second taper sleeve. The utility model provides a frock of a biconical cover positive and negative expansion processing thin wall section of thick bamboo, includes first taper sleeve, second taper sleeve, dabber and dismantles the swivel nut, and the dabber is equipped with first taper sleeve and second taper sleeve respectively, dismantles the outer column face of swivel nut and processes the screw thread, and dismantles the swivel nut is installed to the relative farther one end of first taper sleeve and second taper sleeve, dismantles the hole suit of swivel nut at dabber threaded rod.
Preferably, an oil groove is processed on the outer wall of the second taper sleeve.
Preferably, the mandrel comprises a mandrel body and a threaded rod, wherein the threaded rod is arranged at the left end and the right end of the mandrel body.
Preferably, the mandrel body is an olive-shaped double back taper.
Preferably, the two ends of the mandrel are provided with central holes. Expansion openings are formed in the first taper sleeve and the second taper sleeve.
The invention provides a technical scheme for solving the problems of mounting and dismounting a tool for processing a thin-wall cylinder by forward and reverse expansion of a double-cone sleeve, which comprises the following steps:
a tool installation method for processing a thin-wall cylinder by forward and reverse expansion of a double-cone sleeve comprises the following steps:
The installation step comprises the following steps:
step a, before use, firstly processing the outer circle of the thin-wall cylinder to be processed on a lathe by using a thick-wall cylindrical blank, and reserving the outer circle of the thin-wall cylinder to be processed, so that when the inner circle of the thin-wall cylinder to be processed is processed, the three-jaw chuck clamps the outer circle of the thin-wall cylinder to be processed, and the wall of the thin-wall cylinder to be processed is not deformed;
Step b, processing the inner circle of the thin-wall cylinder to be processed and the middle ring rib to the required size;
Step c, when in use, the first taper sleeve and the olive-shaped inverted cone (one side) at the middle part of the mandrel are preassembled together;
D, loading the first taper sleeve and the mandrel pre-assembled in the step c into the cylinder body of the thin-wall cylinder to be processed after the step b is processed, controlling the distance between the right end surface of the first taper sleeve and the left end surface of the annular rib in the cylinder to be L1, wherein L1 is 8-12 mm, and reserving the axial displacement of the first taper sleeve into the mandrel when expanding the first taper sleeve;
Step e, locking the first taper sleeve by using a gasket and a locking nut, wherein the distance between the right end surface of the first taper sleeve and the left end surface of the ring rib in the cylinder after the first taper sleeve is expanded is L3, and L3 is 2-4 mm;
f, then a second taper sleeve is arranged between the cylinder body of the thin-wall cylinder to be processed and the olive-shaped back taper 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 annular rib in the cylinder is also made to be about L2, L2 is 8-12 mm, and when the second taper sleeve is expanded, the axial displacement of the second taper sleeve into the mandrel is reserved;
step g, locking the second taper sleeve by using a gasket and a locking nut, and ensuring that the distance between the left end surface of the second taper sleeve and the right end surface of the ring rib in the cylinder after the second taper sleeve is expanded is about L4, wherein L4 is 2-4 mm;
Step h, mounting and clamping the thin-wall cylinder to be processed on a lathe after two-way expansion, clamping one end of a mandrel by a main shaft three-jaw, propping the other end of the mandrel against a central hole of the mandrel by using a tip, aligning the mandrel, and processing the outer circle of the thin-wall cylinder to be processed to a required size;
And (3) a disassembly step:
Step i, after the thin-wall cylinder to be machined is machined, the thin-wall cylinder to be machined is dismounted from the lathe, the locking nuts and the washers at the two ends are dismounted, the dismounting screw sleeve is sleeved into one end of the mandrel from one side of the second cone sleeve, the external threads of the dismounting screw sleeve are screwed with the internal threads of the second cone sleeve at the same side, the dismounting screw sleeve is screwed until the jacking surface at the front end of the dismounting screw sleeve is contacted with the shaft end of the mandrel, the dismounting screw sleeve is continuously pulled, at the moment, the dismounting screw sleeve is not moved forward any more, the second cone sleeve is driven to withdraw from the external threads of the dismounting screw sleeve by a certain displacement outwards, the second cone sleeve is contracted to form a gap with the inner circle of the thin-wall cylinder to be machined, and the cone sleeve 3 and the dismounting screw sleeve 5 are withdrawn from the mandrel 4 together. Applying force to the mandrel from the other end Shi Zhouxiang of the thin-wall cylinder to be processed, separating the first taper sleeve from the mandrel, contracting the first taper sleeve to form a gap with the inner circle of the thin-wall cylinder to be processed, continuously applying axial force to withdraw from the mandrel, and removing the first taper sleeve;
and j, checking that the thin-wall cylinder to be processed after processing is qualified in guarantee requirement.
The invention has the following beneficial effects:
1. according to the tooling and the tooling installation method for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion, ring ribs in the cylinder body are effectively avoided, and the problem that the parts need to be expanded and clamped twice is solved;
2. The tool for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion and the tool mounting method realize the aim of processing the outer circle of the thin-wall cylinder part by clamping on a lathe at one time, and ensure the requirements on the dimensional accuracy and coaxiality of the inner circle and the outer circle of the thin-wall cylinder;
3. The tool and the tool mounting method for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion have the advantages that the tool cone sleeve is convenient to detach and high in production efficiency, a process route of mass production can be formed, the mass production is realized, the production cost is saved, and the benefit is improved;
4. The tool and the tool mounting method for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion have the advantages that the disassembly method is simple, and the thread ejection structure is easy to realize;
5. The tool for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion has the advantages of simple structure, ingenious design, reasonable and practical design, convenience in disassembly and assembly, firmness in assembly, low cost, strong replicability and popularization of the structural principle and suitability for popularization and use.
Drawings
FIG. 1 is a schematic diagram of a tooling structure for processing 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 machined;
FIG. 3 is a schematic diagram of a second embodiment;
FIG. 4 is a schematic view of the installation of the first cone sleeve, the second cone sleeve and the mandrel;
FIG. 5 is an exploded view of FIG. 4;
FIG. 6 is a schematic view of the structure of the removable screw sleeve;
FIG. 7 is a perspective view of the removable insert;
FIG. 8 is an enlarged view at I of FIG. 1;
In the drawing, a 1-thin-wall cylinder to be processed, a 2-first taper sleeve, a 3-second taper sleeve, a 4-mandrel, a 5-dismounting screw sleeve, a 6-washer, a 7-locking nut, an 8-oil groove, a 9-ring rib, a 10-expansion opening, a 31-taper sleeve internal thread, a 41-mandrel body, a 42-threaded rod, a 43-central hole, a 51-inner hole and a 52-annular oil groove are formed.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The connection mentioned in the invention is divided into a fixed connection and a detachable connection, wherein the fixed connection is a conventional fixed connection mode such as a non-detachable connection including but not limited to a hemmed connection, a rivet connection, an adhesive connection, a welded connection and the like, the detachable connection is a conventional detachable mode such as a threaded connection, a snap connection, a pin connection, a hinge connection and the like, and when a specific connection mode is not limited explicitly, at least one connection mode can be found in the conventional connection mode by default, so that the function can be realized, and a person skilled in the art can select the device according to needs. For example, the fixed connection is selected from a welded connection, and the detachable connection is selected from a hinged connection.
The first embodiment is described by referring to fig. 1-7, the tool for processing the thin-wall cylinder by forward and reverse expansion of the double-cone sleeve of the first embodiment comprises a first cone sleeve 2, a second cone sleeve 3, a mandrel 4 and a gasket 6, wherein the first cone sleeve 2 and the second cone sleeve 3 are sleeved on the mandrel 4 respectively, the gasket 6 is installed at two ends of the mandrel 4 through a lock nut 7, the diameter of the gasket 6 is larger than the inner diameters of the outer ends of cone holes of the first cone sleeve 2 and the second cone sleeve 3, expansion openings 10 are formed in the first cone sleeve 2 and the second cone sleeve 3, the expansion structures of the first cone sleeve 2 and the second cone sleeve 3 avoid the limitation of a middle ring rib 9 of the thin-wall cylinder 1 to be processed, and the expansion clamping is reliable. The coaxiality of the inner circle and the outer circle of the thin-wall cylinder is easy to ensure in the turning process, the thickness of the cylinder wall is uniform, and the tool in the embodiment 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 sleeved on one side of the mandrel 4, the first taper sleeve 2 and the mandrel 4 are fixedly installed through the gasket 6 and the locking nut 7, the expansion degree between the first taper sleeve 2 and the mandrel 4 is low, the thin-wall cylinder 1 to be machined is installed on the outer side of the first taper sleeve 2, the locking nut 7 is adjusted, the inner wall of the thin-wall cylinder 1 to be machined is tightly expanded and installed with the outer wall of the first taper sleeve 2, then the second taper sleeve 3 is installed, the second taper sleeve 3 is fixedly installed through the gasket 6 and the locking nut 7, the locking nuts 7 on two sides are adjusted, the outer walls of the first taper sleeve 2 and the second taper sleeve 3 are completely expanded and tightly attached to the inner wall of the thin-wall cylinder 1 to be machined, and finally the workpiece tool assembly after installation is installed on a lathe for machining.
The second embodiment is described with reference to fig. 1-7, based on the first embodiment, a tool for processing a thin-wall cylinder by forward and reverse expansion of a double-cone sleeve in the first embodiment comprises a first cone sleeve 2, a second cone sleeve 3, a mandrel 4 and a disassembly screw sleeve 5, as shown in fig. 3, the first cone sleeve 2 and the second cone sleeve 3 are respectively sleeved on the mandrel 4, the outer column surface of the disassembly screw sleeve 5 is processed with threads, one end of the first cone sleeve 2 and the second cone sleeve 3, which is relatively far away from each other, is provided with the disassembly screw sleeve 5, an inner hole 51 of the disassembly screw sleeve 5 is sleeved on a threaded column of the mandrel 4, a jacking surface in contact with the shaft end of the mandrel 4 is provided with an annular oil groove 52, the expansion opening 10 is processed on the first cone sleeve 2 and the second cone sleeve 3, the expansion structure of the first cone sleeve 2 and the second cone sleeve 3 avoid the limitation of an intermediate ring rib 9 of the thin-wall cylinder 1 to be processed, the tool is characterized in that the double-cone sleeve is a double-cone sleeve 5, one end of the thin-wall cylinder 1 is not easy to withdraw from the mandrel 4 after the processing is finished, the end of the mandrel 4 is not easy to withdraw from the mandrel 4, the second cone sleeve is not easy to withdraw, the tool is mounted to the diameter of the mandrel 3 is increased, the tool is matched with the second cone sleeve 3, the diameter is matched with the second cone sleeve 3, and the tool is difficult to be removed by adopting the diameter of the first cone sleeve 3, and the inner cone sleeve 3 is not easy to be screwed to be removed, and the difficult to be removed, and the easy to be removed, and the difficult to be removed, and is removed, the coaxiality of the outer circle and the inner circle of the thin-wall cylinder and the dimensional accuracy of the inner circle and the outer circle are ensured in the processing process.
The third embodiment is described with reference to fig. 1-7, and based on the first embodiment, the tool for processing the thin-wall cylinder by forward and reverse expansion of the double-cone sleeve is characterized in that an oil groove 8 is processed on the outer wall of the second cone sleeve 3 along the direction of an outer circular bus, the oil groove 8 is used for reducing friction between the second cone sleeve 3 and the inner wall of the thin-wall cylinder 1 to be processed when the second cone sleeve 3 is disassembled, and an annular oil groove 52 is processed on the top pressing surface of the disassembly screw sleeve 5 and is used for reducing friction between the top pressing surface of the disassembly screw sleeve 5 and the end surface of the mandrel 4, so that the second cone sleeve 3 is taken out and the top disassembly screw sleeve 5 is favorably pressed.
In a fourth embodiment, referring to fig. 1 to 7, a tool for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve in this embodiment is described, the mandrel 4 includes a mandrel body 41 and a threaded rod 42, the threaded rod 42 is mounted at the left end and the right end of the mandrel body 41, and the threaded rod 42 facilitates the screw thread fit installation of the lock nut 7, so that the relative fixing structure is more stable.
In a fifth embodiment, referring to fig. 1-7, a tool for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve in this embodiment is described, the mandrel body 41 is shaped like an inverted cone, the inverted cone is shaped like two frusta arranged in mirror symmetry, two ends are thin and thick in the middle, the first cone sleeve 2 and the second cone sleeve 3 are sleeved on two sides of the mandrel body 41, the distance between the first cone sleeve 2 and the second cone sleeve 3 and the central diameter of the mandrel body 41 is adjusted by disassembling the screw sleeve 5 or the locking nut 7, the expansion of the expansion opening 10 is realized, the diameter of the outer wall of the cone is increased, further the expansion installation of the inner wall of the thin-walled cylinder 1 to be processed is completed, and in this way, the radial cross sections of the first cone sleeve 2 and the second cone sleeve 3 are adjusted more flexibly, the expansion degree is higher, and collision with the ring rib 9 is avoided.
In a sixth embodiment, referring to fig. 1 to 7, a tool for processing a thin-walled cylinder by forward and reverse expansion of a double-cone sleeve in this embodiment is described, and a central hole 41 is processed at two ends of the mandrel 4, so that the tool is convenient to fixedly install and align with a lathe.
The seventh embodiment describes a tool installation method for machining a thin-wall cylinder by forward and reverse expansion of a double-cone sleeve according to the present embodiment with reference to fig. 1 to 7, and the installation steps are as follows:
step a, before use, firstly processing the outer circle of the thin-wall cylinder 1 to be processed on a lathe by using a thick-wall cylindrical blank, and reserving the reserved amount, so that when the inner circle of the thin-wall cylinder 1 to be processed is processed, the three-jaw chuck clamps the outer circle of the thin-wall cylinder 1 to be processed, and the cylinder wall of the thin-wall cylinder 1 to be processed is not deformed;
step b, processing the inner circle of the thin-wall cylinder 1 to be processed and the middle ring rib to the required size;
Step c, during use, the first taper sleeve 2 and the olive-shaped inverted cone at the middle part of the mandrel 4 are preassembled;
Step d, the first taper sleeve 2 preassembled in the step c and the mandrel 4 are arranged in the cylinder body of the thin-wall cylinder 1 to be processed after processing in the step b, the distance between the left end face of the annular rib 9 on the right end face of the first taper sleeve 2 is controlled to be L1, L1 is controlled to be 8-12 mm, and when the first taper sleeve 2 is expanded, the axial displacement of the first taper sleeve 2 into the mandrel 4 is reserved;
step e, locking the first taper sleeve 2 by using a gasket 6 and a locking nut 7, and ensuring that the distance between the right end surface of the first taper sleeve 2 and the left end surface of the ring rib 9 after the first taper sleeve is expanded is L3, wherein L3 is 2-4 mm;
F, then loading a second taper sleeve 3 at the other end of the cylinder body of the thin-wall cylinder 1 to be processed and the other end of the mandrel 4, and equally enabling the distance between the left end face of the second taper sleeve 3 and the right end face of the ring rib 9 to be about L2, wherein L2 is 8-12 mm, and when the second taper sleeve 3 is expanded, the axial displacement of the second taper sleeve 3 into the mandrel 4 is reserved;
Step g, locking the second taper sleeve 3 by using a gasket 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 the second taper sleeve is expanded is about L4, wherein L4 is 2-4 mm;
Step h, mounting and clamping the thin-wall cylinder 1 to be processed on a lathe after two-way expansion, clamping one end of the mandrel 4 by a main shaft three-jaw, propping the other end of the mandrel 4 on a central hole 41 of the mandrel 4 by using a tip, aligning the mandrel 4, and processing the outer circle of the thin-wall cylinder 1 to be processed to a required size;
And (3) a disassembly step:
Step i, after the thin-wall barrel 1 to be machined is machined, the thin-wall barrel 1 to be machined is disassembled from a lathe, the locking nuts 7 and the washers 6 at the two ends are disassembled, the disassembly screw sleeve 5 is sleeved at one end of the mandrel 4, the external threads of the disassembly screw sleeve 5 are screwed with the internal threads of the second taper sleeve 3 at the same side, the disassembly screw sleeve 5 is screwed until the jacking surface at the front end of the disassembly screw sleeve 5 is contacted with the shaft end of the mandrel 4, the disassembly screw sleeve 5 is continuously pulled, at the moment, the disassembly screw sleeve 5 is not moved forward any more axially, the second taper sleeve 3 is driven outwards by the external threads of the disassembly screw 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-wall barrel 1 to be machined, and the taper sleeve 3 and the screw sleeve 5 are withdrawn from the mandrel 4 together. Applying a force to the mandrel 4 from the other end Shi Zhouxiang of the thin-wall cylinder 1 to be processed, separating the first taper sleeve 2 from the mandrel 4, shrinking the first taper sleeve 2 to form a gap with the inner circle of the thin-wall cylinder 1 to be processed, continuously applying an axial force to withdraw from the mandrel 4, and removing the first taper sleeve 2;
and j, checking the machined thin-wall cylinder 1 to be machined to ensure that the requirements are qualified.
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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present invention, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.
Spatially relative terms, such as "above," "upper" and "upper surface," "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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (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 the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
It should be noted that, in the above embodiments, as long as the technical solutions that are not contradictory can be arranged and combined, those skilled in the art can exhaust all the possibilities according to the mathematical knowledge of the arrangement and combination, so the present invention does not describe the technical solutions after the arrangement and combination one by one, but should be understood that the technical solutions after the arrangement and combination have been disclosed by the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A tool installation method for processing a thin-wall cylinder by double-cone sleeve positive and negative expansion is characterized by comprising the following steps of:
The installation step comprises the following steps:
step a, before use, firstly processing the outer circle of the thin-wall cylinder (1) to be processed on a lathe by using a thick-wall cylindrical blank, and ensuring that the outer circle of the thin-wall cylinder (1) to be processed is clamped by a three-jaw chuck 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;
Step b, processing the inner circle of the thin-wall cylinder (1) to be processed and the middle ring rib (9) to the required size;
Step c, when in use, the first taper sleeve (2) and the olive-shaped inverted cone at the middle part of the mandrel (4) are preassembled;
D, loading the first taper sleeve (2) and the mandrel (4) which are preassembled in the step c into the barrel body of the thin-wall barrel (1) to be processed after the machining in the step b, controlling the distance between the right end surface of the first taper sleeve (2) and the left end surface of the annular rib (9) to be L1, wherein L1 is 8-12 mm, and when the first taper sleeve (2) is expanded, axially displacing the first taper sleeve (2) towards the mandrel (4);
Step e, locking the first taper sleeve (2) by using a gasket (6) and a locking nut (7), and ensuring that the distance between the right end surface of the first taper sleeve (2) and the left end surface of the ring rib (9) after expansion is L3, wherein L3 is 2-4 mm;
F, loading a second cone sleeve (3) at the other end of the cylinder body of the thin-wall cylinder (1) to be processed and the other end of the mandrel (4), and equally enabling the distance between the left end face of the second cone sleeve (3) and the right end face of the ring rib (9) to be L2, wherein L2 is 8-12 mm, and when the second cone sleeve (3) is expanded, the second cone sleeve (3) axially moves towards the mandrel (4);
Step g, locking the second taper sleeve (3) by using a gasket (6) and a locking nut (7), and ensuring that the distance between the left end surface of the second taper sleeve (3) and the right end surface of the ring rib (9) after the second taper sleeve is expanded is L4, wherein L4 is 2-4 mm;
Step h, mounting and clamping the thin-wall cylinder (1) to be processed on a lathe after two-way expansion, clamping one end of a mandrel (4) by a main shaft three-jaw, propping the other end of the mandrel with a center on a central hole (41) of the mandrel (4), aligning the mandrel (4), and processing the outer circle of the thin-wall cylinder (1) to be processed to a required size;
And (3) a disassembly step:
Step i, after the thin-wall barrel (1) to be machined is machined, the thin-wall barrel (1) to be machined is disassembled from a lathe, a locking nut (7) and a gasket (6) at two ends are disassembled, a disassembling screw sleeve (5) is sleeved at one end of a mandrel (4), external threads of the disassembling screw sleeve (5) are screwed with internal threads (31) of a second taper sleeve (3) at the same side, the disassembling screw sleeve (5) is screwed until a jacking surface at the front end of the disassembling screw sleeve (5) is contacted with the shaft end of the mandrel (4), the disassembling screw sleeve (5) is continuously pulled, at the moment, the disassembling screw sleeve (5) is not axially moved forward any more, the second taper sleeve (3) is driven to withdraw by external threads of the disassembling screw sleeve (5) outwards for a certain displacement, the second taper sleeve (3) is contracted with the inner circle of the thin-wall barrel (1) to be machined, the taper sleeve (3) and the screw sleeve (5) are withdrawn from the mandrel (4) together, the mandrel (4) is continuously withdrawn from the other end Shi Zhouxiang of the thin-wall barrel (1) to be machined, the first taper sleeve (2) is separated from the mandrel (4), the first taper sleeve (2) is axially withdrawn from the mandrel (2) to be machined, and the gap (2) is formed by the second taper sleeve (1), and the second taper sleeve (2) is continuously subjected to axial machining force to be formed;
and j, checking the machined thin-wall cylinder (1) to be machined to ensure that the requirements are qualified.
2. The tool for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion is applied to the installation method of the thin-wall cylinder by the double-cone sleeve positive and negative expansion according to claim 1, and is characterized by comprising a first cone sleeve (2), a second cone sleeve (3), a mandrel (4) and a gasket (6), wherein the first cone sleeve (2) and the second cone sleeve (3) are respectively sleeved on the mandrel (4), and the gasket (6) is installed at two ends of the mandrel (4) through locking nuts (7).
3. The tool for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion is applied to the installation method for processing the thin-wall cylinder by the double-cone sleeve positive and negative expansion according to claim 1, and is characterized by comprising a first cone sleeve (2), a second cone sleeve (3), a mandrel (4) and a disassembly screw sleeve (5), wherein the mandrel (4) is respectively sleeved with the first cone sleeve (2) and the second cone sleeve (3), the outer wall of the disassembly screw sleeve (5) is provided with threads, one end, far away from the first cone sleeve (2) and the second cone sleeve (3), of the disassembly screw sleeve (5) is installed at one end, far away from the first cone sleeve (2) and the second cone sleeve (3), of the disassembly screw sleeve (5), and an inner hole (51) of the disassembly screw sleeve (5) is installed on the mandrel (4).
4. The tool for processing the thin-wall cylinder by the double-taper sleeve positive and negative expansion according to claim 2 or 3 is characterized in that an oil groove (8) is processed on the outer wall of the second taper sleeve (3).
5. The tool for machining the thin-wall cylinder by double-taper sleeve positive and negative expansion according to claim 4, wherein the mandrel (4) comprises a mandrel body (41) and a threaded rod (42), and the threaded rod (42) is arranged at the left end and the right end of the mandrel body (41).
6. The tool for machining the thin-wall cylinder by double-cone sleeve positive and negative expansion according to claim 5, wherein the mandrel body (41) is an olive-shaped inverted cone.
7. The tool for machining the thin-wall cylinder by double-cone sleeve positive and negative expansion according to claim 6, wherein the two ends of the mandrel (4) are provided with central holes (43).
8. The tool for processing the thin-wall cylinder by double-taper sleeve positive and negative expansion according to claim 2 or 3 is characterized in that expansion openings (10) are processed on the first taper sleeve (2) and the second taper sleeve (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260070.2A CN112247175B (en) | 2020-11-12 | 2020-11-12 | A tooling and tooling installation method for double-taper sleeve positive and negative expansion processing of thin-walled cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011260070.2A CN112247175B (en) | 2020-11-12 | 2020-11-12 | A tooling and tooling installation method for double-taper sleeve positive and negative expansion processing of thin-walled cylinder |
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| CN112247175A CN112247175A (en) | 2021-01-22 |
| CN112247175B true CN112247175B (en) | 2025-01-07 |
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| CN113021226B (en) * | 2021-03-03 | 2022-08-05 | 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 |
| CN113145884B (en) * | 2021-03-23 | 2025-01-03 | 湖南联诚轨道装备有限公司 | A core expansion mold for machine base precision turning |
| CN115383160B (en) * | 2022-10-27 | 2023-05-26 | 宁波众鑫里美科技有限公司 | Bipyramid internal expanding clamp of automobile motor casing |
| CN115635418A (en) * | 2022-11-02 | 2023-01-24 | 重庆清平机械有限责任公司 | Excircle grinding tool for machining large-diameter and large-inner-hole |
| 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 |
| CN118513838B (en) * | 2024-07-24 | 2024-12-03 | 中国船舶集团有限公司第七〇七研究所 | Coaxial positioning device using hole alignment and adjustment and its use method and application |
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