CN114535729A - Thin-wall cylinder inner support device, turning and milling composite processing device and processing method - Google Patents
Thin-wall cylinder inner support device, turning and milling composite processing device and processing method Download PDFInfo
- Publication number
- CN114535729A CN114535729A CN202210107240.6A CN202210107240A CN114535729A CN 114535729 A CN114535729 A CN 114535729A CN 202210107240 A CN202210107240 A CN 202210107240A CN 114535729 A CN114535729 A CN 114535729A
- Authority
- CN
- China
- Prior art keywords
- thin
- wall
- cylinder
- wall cylinder
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H5/00—Combined machining
- B23H5/04—Electrical discharge machining combined with mechanical working
-
- 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
- B23B31/4006—Gripping the work or tool by a split sleeve
- B23B31/402—Gripping the work or tool by a split sleeve using fluid-pressure means to actuate the gripping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a thin-wall cylinder inner supporting device which comprises a mandrel, wherein a mounting seat and an abutting block are sleeved on the mandrel, a plurality of spaced guide pieces are arranged on the periphery of the mounting seat, a magnetorheological damping supporting mechanism is arranged on the guide pieces in a sliding mode, a connecting rod is hinged between the magnetorheological damping supporting mechanism and the abutting block, adjusting pieces are arranged at two ends of the mandrel, and a reset elastic piece is arranged between the mounting seat and the abutting block. The turning and milling composite processing device further comprises a thin-wall cylinder inner support device, and a convolution thimble is arranged on the tailstock. Also discloses a turning and milling composite processing method, which comprises the following steps: installing a thin-wall cylinder internal support device; electrifying the magnetorheological damping supporting mechanism; fixing the thin-wall cylinder; electric pulses assist in the processing. The thin-wall cylinder internal support device, the turning and milling combined machining device and the machining method can inhibit the vibration of the thin-wall cylinder and improve the machining precision and the machining efficiency.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a thin-wall cylinder inner supporting device, a turning and milling combined machining device and a machining method.
Background
The high-efficiency and high-precision machining of the thin-wall cylindrical part belongs to the problem which is urgently needed to be solved by civil use and national defense industry at present. Because the rigidity of the thin-wall cylinder is extremely poor, the thin-wall cylinder is easy to vibrate and deform under the action of cutting force, and satisfactory processing quality and processing precision are difficult to obtain. Vibration can also aggravate tool wear and seriously affect production efficiency and production cost.
The residual stress introduced during the cutting process of the thin-walled cylinder part can cause the deformation of the thin-walled cylinder. In the actual processing process, the machining process of cutting-annealing treatment needs to be repeatedly carried out to reduce the hardness of the residual stress to the machining precision of the thin-wall cylinder. The thin-walled cylinder is therefore extremely inefficient to machine.
Aiming at the problem of poor rigidity of thin-wall barrel processing and the like, a patent (patent number CN201922058447.5) discloses a drilling tool for processing the thin-wall barrel, the device adopts a plurality of extrusion rods to annularly support the thin-wall barrel, and the end part of each extrusion rod is fixedly connected with a circular arc-shaped plate. In the thin-wall cylinder machining process, the push rod is adjusted, so that the four extrusion rods are radially expanded, and the plurality of circular arc-shaped plates are attached to the thin-wall cylinder to play a supporting role. However, the device is pushed by the wedge-shaped surface in a matching way, and the supporting force cannot be adjusted according to the actual working condition of the machining vibration of the thin-wall part, so that the machining precision and the machining quality of the thin-wall cylinder are influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a thin-wall cylinder internal support device, a turning and milling composite processing device and a processing method, wherein the thin-wall cylinder internal support device can effectively inhibit the vibration of a thin-wall cylinder and improve the processing precision and the processing efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a thin wall drum internal stay device, includes the dabber, the spindle is gone up the cover and is equipped with at least a pair of mount pad that can be close to relatively and keep away from and supports the ejector pad, the week side of mount pad is equipped with the guide of a plurality of interval arrangements, each all smooth being equipped with on the guide and being used for supporting the magnetic current of supporting thin wall drum inner wall and becoming damp supporting mechanism, magnetic current becomes damp supporting mechanism and relative support to articulate between the ejector pad and have the connecting rod, the both ends of dabber are equipped with and are used for making the mount pad and support the adjusting part that the ejector pad is close to or keeps away from, and are mated the mount pad with support and be equipped with the elastic component that resets between the ejector pad.
As a further improvement of the above technical solution:
the magnetorheological damping support mechanism comprises a cylinder body and a piston, the cylinder body is arranged on the guide piece in a sliding mode, the connecting rod is hinged between the cylinder body and the opposite abutting and pushing block, an excitation coil ring and magnetorheological fluid are arranged in the cylinder body, one end of the piston is movably inserted into the magnetorheological fluid, the other end of the piston extends out of the cylinder body and is provided with an abutting claw used for abutting against the inner wall of the thin-wall cylinder, and a pre-tightening elastic piece is arranged between the piston and the cylinder body.
The two ends of the cylinder body are respectively provided with an end cover, the connecting rod is hinged between the end cover at one end of the cylinder body and the opposite abutting and pushing block, and the piston penetrates through the middle of the end cover at the other end of the cylinder body.
The end cover is installed on the cylinder body through a bolt.
The cylinder body is provided with a liquid injection port.
The installation seat and the abutting and pushing blocks are provided with two pairs, the two installation seats are integrally formed and fixed in the middle of the core shaft, the abutting and pushing blocks are sleeved on the core shaft in a sliding mode, and the adjusting pieces at the two ends of the core shaft abut against the outer sides of the two abutting and pushing blocks respectively.
The adjusting piece is sleeved on the mandrel and is in threaded connection with the mandrel.
The utility model provides a turn-milling combined machining device, includes the lathe, the head and the tail both ends of lathe are equipped with chuck mechanism and tailstock respectively, the lathe slides between chuck mechanism and tailstock and is equipped with the knife rest, turn-milling combined machining device still includes foretell thin wall drum internal stay device, be equipped with the thimble that circles round that is used for the shore dabber on the tailstock.
As a further improvement of the above technical solution:
the lathe is equipped with the chuck that can be connected with chuck mechanism electricity and connects the mechanism, be equipped with on the tailstock and connect the electric mechanism with the thimble that circles round the thimble electricity and be connected, the chuck connects electric mechanism and thimble to connect the positive negative pole of electric mechanism and pulse power supply to be connected respectively.
A turning and milling combined machining method is carried out by adopting the turning and milling combined machining device, and comprises the following steps:
step S1, installing the thin-wall cylinder internal support device: inserting the thin-wall cylinder internal support device into the thin-wall cylinder, and enabling each magnetorheological damping support mechanism to be supported on the inner wall of the thin-wall cylinder through an adjusting piece;
step S2, electrifying the magnetorheological damping support mechanism: electrifying the magnetorheological damping supporting mechanism, and adjusting the current to enable the magnetorheological damping supporting mechanism to generate corresponding damping force on the thin-wall cylinder;
step S3, fixing the thin-walled cylinder: clamping one end of a mandrel or a thin-wall cylinder by a chuck mechanism, and supporting the other end of the mandrel by a rotary thimble to form a fixed clamping mode of clamping one top;
step S4, electric pulse assisted processing: and starting the machine tool, turning on the pulse power supply when the cutter on the cutter rest is in contact with the outer wall of the thin-wall cylinder, and adjusting parameters of the pulse power supply to enable the surface of the thin-wall cylinder to generate electric pulses to start machining the workpiece.
Compared with the prior art, the invention has the advantages that:
the thin-wall cylinder internal support device provided by the invention has the following use process: firstly, inserting a thin-wall cylinder internal support device into a thin-wall cylinder, enabling a mounting seat and a pushing block to approach through an adjusting piece, enabling connecting rods to rotate under the driving action of the pushing block, and enabling each magnetorheological damping support mechanism to be supported on the inner wall of the thin-wall cylinder under the pushing action of the corresponding connecting rod; secondly, electrifying the magnetorheological damping supporting mechanism, and adjusting the current to enable the magnetorheological damping supporting mechanism to generate corresponding damping force on the thin-wall cylinder; then, clamping one end of the mandrel or one end of the thin-wall cylinder by a chuck mechanism of the machine tool, and propping the other end of the mandrel by a rotary thimble of the machine tool to form a fixed clamping mode of clamping one top; and finally, starting the machine tool to machine the workpiece. In the processing process of the thin-wall cylinder internal support device, the magnetorheological damping support mechanisms are supported on the inner wall of the thin-wall cylinder, so that the rigidity of the thin-wall cylinder in processing can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder is effectively inhibited, the surface roughness value of the thin-wall cylinder is reduced, the service life of a cutter is prolonged, the processing cost is effectively reduced, and the processing precision and the processing efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism.
When the thin-wall cylinder internal supporting device is used, the mounting seat and the abutting block are close to each other through the adjusting piece, the abutting claw is in contact with the inner wall of the thin-wall cylinder, proper pre-tightening force is applied to the thin-wall cylinder through the pre-tightening elastic piece, then the exciting coil is electrified to change magnetorheological fluid in the cylinder body into a solid state, and the abutting claw abuts against the inner wall of the thin-wall cylinder under the pre-tightening force of the pre-tightening elastic piece and the action of solidified magnetorheological fluid. On the contrary, the excitation coil is powered off, so that after the solid magnetorheological fluid in the cylinder body becomes liquid, the mounting seat and the pushing block are separated through the adjusting piece, and the thin-wall cylinder can be taken down.
According to the thin-wall cylinder inner supporting device, the two pairs of mounting seats and the abutting blocks can be relatively close through the adjusting pieces at the two ends of the mandrel, so that the magnetorheological damping supporting mechanisms synchronously and radially move to abut against the inner wall of the thin-wall cylinder, and the fixing effect is improved.
In the turning and milling combined machining device, the magneto-rheological damping support mechanisms are supported on the inner wall of the thin-wall cylinder in the machining process, so that the rigidity of the thin-wall cylinder in the machining process can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder is effectively inhibited, the surface roughness value of the thin-wall cylinder is reduced, the service life of a cutter is prolonged, the machining cost is effectively reduced, and the machining precision and the machining efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism.
In the machining process, after the thin-wall cylinder is clamped and fixed, the machine tool is started, when a tool on the tool rest is in contact with the outer wall of the thin-wall cylinder, the pulse power supply is turned on, parameters of the pulse power supply are adjusted, electric pulses are generated on the surface of the thin-wall cylinder, and then the workpiece is machined. The electric pulse assisted cutting can reduce residual stress introduced by cutting and eliminate the residual stress in real time, thereby renovating the multi-pass process route procedure of the traditional cutting machining-heat treatment process of the thin-wall cylinder.
According to the turning and milling combined machining method, the magneto-rheological damping supporting mechanisms are supported on the inner wall of the thin-wall cylinder, so that the rigidity of the thin-wall cylinder in machining can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder is effectively inhibited, the surface roughness value of the thin-wall cylinder is reduced, the service life of a cutter is prolonged, the machining cost is effectively reduced, and the machining precision and the machining efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism. The electric pulse assisted cutting can reduce residual stress introduced by cutting and eliminate the residual stress in real time, thereby renovating the multi-pass process route procedure of the traditional cutting machining-heat treatment process of the thin-wall cylinder.
Drawings
Fig. 1 is a schematic sectional structural view of the thin-walled cylinder internal support device of the invention.
Fig. 2 is a schematic perspective view of the thin-walled cylinder inner supporting device (the magnetorheological damping supporting mechanism is not shown).
FIG. 3 is a schematic cross-sectional structural view of the magnetorheological damping support mechanism of the thin-walled cylinder inner support device of the present invention.
Fig. 4 is a schematic perspective view of the turning and milling combined machining device of the present invention.
Fig. 5 is a schematic partial structural view of the turning and milling combined machining device of the invention.
Fig. 6 is a front view structural view of the turn-milling combined machining apparatus of the present invention.
The reference numerals in the figures denote:
1. a mandrel; 11. an adjustment member; 12. a restoring elastic member; 2. a mounting seat; 3. pushing the block; 4. a guide member; 5. a magnetorheological damping support mechanism; 51. a cylinder body; 511. an end cap; 512. a liquid injection port; 52. a piston; 53. an excitation coil loop; 54. magnetorheological fluid; 55. supporting and grabbing; 56. pre-tightening the elastic piece; 6. a connecting rod; 7. a thin-walled cylinder; 8. a machine tool; 81. a chuck mechanism; 811. a power connection mechanism; 82. a tailstock; 821. a rotating thimble; 83. a knife rest.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
The first embodiment is as follows:
fig. 1 to 3 show an embodiment of the thin-walled cylinder inner support device of the present invention, the thin-walled cylinder inner support device includes a mandrel 1, the mandrel 1 is sleeved with at least a pair of mounting base 2 and pushing block 3 which can be relatively close to and far away from each other, the periphery of the mounting base 2 is provided with a plurality of guiding members 4 which are arranged at intervals, each guiding member 4 is slidably provided with a magnetorheological damping supporting mechanism 5 for pushing against the inner wall of the thin-walled cylinder 7, a connecting rod 6 is hinged between the magnetorheological damping supporting mechanism 5 and the pushing block 3 which are opposite to each other, two ends of the mandrel 1 are provided with adjusting members 11 for making the mounting base 2 and the pushing block 3 close to or far away from each other, and a reset elastic member 12 is arranged between the mounting base 2 and the pushing block 3 which are paired.
The use process comprises the following steps: firstly, inserting a thin-wall cylinder internal support device into a thin-wall cylinder 7, enabling a mounting seat 2 and a pushing block 3 to approach through an adjusting piece 11, enabling connecting rods 6 to rotate under the driving action of the pushing block 3, and enabling each magnetorheological damping support mechanism 5 to be supported on the inner wall of the thin-wall cylinder 7 under the pushing action of the corresponding connecting rod 6; secondly, electrifying the magnetorheological damping supporting mechanism 5, and adjusting the current to enable the magnetorheological damping supporting mechanism 5 to generate corresponding damping force on the thin-wall cylinder 7; then, clamping one end of the mandrel 1 or the thin-wall cylinder 7 by a chuck mechanism 81 of the machine tool 8, and propping the other end of the mandrel 1 by a rotary thimble 821 of the machine tool 8 to form a fixed clamping mode of clamping one end; finally, the machine tool 8 is started to machine the workpiece. In the processing process of the thin-wall cylinder internal support device, the magnetorheological damping support mechanisms 5 are supported on the inner wall of the thin-wall cylinder 7, so that the rigidity of the thin-wall cylinder 7 in the processing process can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder 7 is effectively inhibited, the surface roughness value of the thin-wall cylinder 7 is reduced, the service life of a cutter is prolonged, the processing cost is effectively reduced, and the processing precision and the processing efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism 5.
In this embodiment, as shown in fig. 1 and fig. 3, the magnetorheological damping support mechanism 5 includes a cylinder 51 and a piston 52, the cylinder 51 is slidably disposed on the guide 4, the connecting rod 6 is hinged between the cylinder 51 and the opposite pushing block 3, the cylinder 51 is provided with an exciting coil loop 53 and a magnetorheological fluid 54, one end of the piston 52 is movably inserted into the magnetorheological fluid 54, the other end of the piston extends out of the cylinder 51 and is provided with a supporting claw 55 for supporting the inner wall of the thin-walled cylinder 7, and a pre-tightening elastic member 56 is disposed between the piston 52 and the cylinder 51.
When the magnetorheological fluid is used, the installation seat 2 and the abutting block 3 are close to each other through the adjusting piece 11, the abutting claw 55 is in contact with the inner wall of the thin-wall cylinder 7, appropriate pre-tightening force is applied to the thin-wall cylinder 7 through the pre-tightening elastic piece 56, then the exciting coil. On the contrary, the excitation coil loop 53 is powered off to change the solid magnetorheological fluid 54 in the cylinder body 51 into a liquid state, and then the mounting seat 2 and the pushing block 3 are separated through the adjusting piece 11, so that the thin-wall cylinder 7 can be taken down.
According to the invention, the adjusting element 11 and the pre-tightening elastic element 56 are used for applying proper pre-tightening force to the thin-wall cylinder 7, and then the magneto-rheological fluid 54 is used for solidifying, so that the abutting force of the thin-wall cylinder 7 is kept unchanged, and the effects of fixing the thin-wall cylinder 7 and inhibiting the radial vibration of the thin-wall cylinder 7 are achieved. And the operation is convenient.
In this embodiment, the two ends of the cylinder 51 are both provided with end caps 511, the connecting rod 6 is hinged between the end cap 511 at one end of the cylinder 51 and the opposite pushing block 3, and the piston 52 is inserted in the middle of the end cap 511 at the other end of the cylinder 51. Specifically, one end of the piston 52 extending into the cylinder 51 is provided with a resistance block, and the area of the resistance block is larger than the cross-sectional area of the piston 52, so as to improve the resistance after the solid magnetorheological fluid 54 is solidified. Specifically, one end of the connecting rod 6 is hinged to the pushing block 3, and the other end is hinged to the end cover 511 at one end of the cylinder 51. The pre-tightening elastic member 56 is a pre-tightening spring, is located inside the cylinder 51, and is fixed between the stopper and the end cap 511 at the other end of the cylinder 51. A seal ring is provided between the end cap 511 at the other end of the cylinder 51 and the piston 52. The piston 52 is arranged along the radial direction of the mandrel 1, and the abutting claw 55 is in threaded connection with one end of the piston 52 far away from the mandrel 1, so that the disassembly and the replacement are convenient.
In this embodiment, as shown in fig. 3, the end cap 511 is mounted on the cylinder body 51 by bolts, so as to be easily removed and replaced.
In this embodiment, the cylinder 51 is provided with a liquid injection port 512. Facilitating the injection of the magnetorheological fluid 54. Generally in the occluded state.
The guide 4 is cylindrical and is disposed along the radial direction of the mandrel 1, and the cylinder 51 is slidably disposed in the guide 4. The pushing block 3 is annular, the center of the pushing block 3 is slidably sleeved on the mandrel 1, and the outer diameter of the pushing block 3 is matched with the thin-wall cylinder 7, so that the thin-wall cylinder 7 has a guiding effect on the sliding of the pushing block 3, and the mandrel 1 and the thin-wall cylinder 7 can be ensured to be coaxial. The reset elastic part 12 is a reset spring, is sleeved on the mandrel 1, and is abutted between the paired mounting seats 2 and the abutting blocks 3.
In this embodiment, as shown in fig. 1, two pairs of the mounting seats 2 and the pushing blocks 3 are provided, the two mounting seats 2 are integrally formed and fixed in the middle of the mandrel 1, the pushing blocks 3 are slidably sleeved on the mandrel 1, and the adjusting members 11 at two ends of the mandrel 1 are respectively tightly abutted to the outer sides of the two pushing blocks 3. The two pairs of mounting seats 2 and the abutting and pushing blocks 3 can be relatively close to each other through the adjusting pieces 11 at the two ends of the mandrel 1, so that the magnetorheological damping supporting mechanisms 5 synchronously and radially move to abut against the inner wall of the thin-wall cylinder 7, and the fixing effect is improved. Specifically, the adjusting member 11 is sleeved on the mandrel 1 and is in threaded connection with the mandrel 1, and if the adjusting member 11 and the adjusting nut are screwed, two pushing blocks 3 can be extruded by screwing the two adjusting members 11, so that the magnetorheological damping supporting mechanism 5 is pushed against the inner wall of the thin-wall cylinder 7, specifically, the pushing claw 55 of the magnetorheological damping supporting mechanism 5 is pushed against the inner wall of the thin-wall cylinder 7, and otherwise, the extruding effect on the pushing blocks 3 can be relieved by unscrewing the two adjusting members 11. The structure is simple, the operation is convenient, and the magneto-rheological damping supporting mechanisms 5 can move synchronously. In other embodiments, the two mounting seats 2 can be arranged separately and can be slidably arranged on the mandrel 1.
Example two:
fig. 4 to 6 show an embodiment of the turning and milling combined machining device according to the present invention, the turning and milling combined machining device includes a machine tool 8, a chuck mechanism 81 and a tailstock 82 are respectively disposed at the head and the tail of the machine tool 8, a tool rest 83 is slidably disposed between the chuck mechanism 81 and the tailstock 82 of the machine tool 8, the turning and milling combined machining device further includes a thin-walled cylinder inner support device according to the first embodiment, and a rotating thimble 821 for supporting the mandrel 1 is disposed on the tailstock 82.
The processing process comprises the following steps: firstly, inserting a thin-wall cylinder internal support device into a thin-wall cylinder 7, enabling a mounting seat 2 and a pushing block 3 to approach through an adjusting piece 11, enabling connecting rods 6 to rotate under the driving action of the pushing block 3, and enabling each magnetorheological damping support mechanism 5 to be supported on the inner wall of the thin-wall cylinder 7 under the pushing action of the corresponding connecting rod 6; secondly, electrifying the magnetorheological damping supporting mechanism 5, and adjusting the current to enable the magnetorheological damping supporting mechanism 5 to generate corresponding damping force on the thin-wall cylinder 7; then, clamping one end of the mandrel 1 or the thin-wall cylinder 7 by a chuck mechanism 81 of the machine tool 8, and propping the other end of the mandrel 1 by a rotary thimble 821 of the machine tool 8 to form a fixed clamping mode of clamping one end; finally, the machine tool 8 is started to machine the workpiece. In the machining process of the composite milling machining device, the magnetorheological damping support mechanisms 5 are supported on the inner wall of the thin-wall cylinder 7 in an abutting mode, so that the rigidity of the thin-wall cylinder 7 in machining can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder 7 is effectively inhibited, the surface roughness value of the thin-wall cylinder 7 is reduced, the service life of a cutter is prolonged, the machining cost is effectively reduced, and the machining precision and the machining efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism 5.
In this embodiment, the machine tool 8 is provided with a chuck power-on mechanism 811 electrically connected to the chuck mechanism 81, the tailstock 82 is provided with a thimble power-on mechanism 811 electrically connected to the rotating thimble 821, and the chuck power-on mechanism 811 and the thimble power-on mechanism 811 are respectively connected to the positive and negative poles of the pulse power supply. After the thin-wall cylinder 7 is clamped and fixed, the machine tool 8 is started, when a tool on the tool rest 83 is in contact with the outer wall of the thin-wall cylinder 7, the pulse power supply is turned on, parameters of the pulse power supply are adjusted, electric pulses are generated on the surface of the thin-wall cylinder 7, and then the workpiece is machined. The electric pulse assisted cutting can reduce the residual stress introduced by cutting and eliminate the residual stress in real time, thereby renovating the multi-pass process route procedure of the traditional cutting machining-heat treatment process of the thin-wall cylinder 7.
The chuck mechanism 81 is preferably a three-jaw chuck, the chuck electrical connection mechanism 811 is preferably a chuck brush, the thimble electrical connection mechanism 811 is preferably a thimble brush, and the chuck brush and the thimble brush are adjusted so as to be brought into close contact with and separated from the chuck mechanism 81, and the thimble brush is adjusted so as to be brought into close contact with and separated from the rotating thimble 821. The electric pulse power supply current is conducted to the three-jaw chuck through the chuck electric brush, then flows through the surface of the thin-wall cylinder 7, and then flows out of the thimble electric brush through the convoluted thimble 821 to the negative electrode of the electric pulse power supply device to form a loop, so that the electric pulse effect is generated.
Example three:
a turning and milling combined machining method is carried out by adopting the turning and milling combined machining device in the second embodiment, and comprises the following steps:
step S1, installing the thin-wall cylinder internal support device: inserting the thin-wall cylinder internal support device into the thin-wall cylinder 7, and enabling each magnetorheological damping support mechanism 5 to be supported on the inner wall of the thin-wall cylinder 7 through an adjusting piece 11;
step S2, energizing the magnetorheological damping support mechanism 5: energizing the magnetorheological damping support mechanism 5, and adjusting the current to enable the magnetorheological damping support mechanism 5 to generate a corresponding damping force on the thin-wall cylinder 7;
step S3, fixing the thin-walled cylinder 7: clamping one end of the mandrel 1 or the thin-wall cylinder 7 by the chuck mechanism 81, and propping the other end of the mandrel 1 by the rotary thimble 821 to form a fixed clamping mode of clamping one top;
step S4, electric pulse assisted processing: and starting the machine tool 8, turning on the pulse power supply when the cutter on the cutter rest 83 is in contact with the outer wall of the thin-wall cylinder 7, and adjusting parameters of the pulse power supply to enable the surface of the thin-wall cylinder 7 to generate electric pulses to start machining the workpiece.
According to the composite processing method for the milling machine, the magneto-rheological damping supporting mechanisms 5 are supported on the inner wall of the thin-wall cylinder 7, so that the rigidity of the thin-wall cylinder 7 in processing can be improved, the damping characteristic of a workpiece-cutter system can be changed, the vibration of the thin-wall cylinder 7 is effectively inhibited, the surface roughness value of the thin-wall cylinder 7 is reduced, the service life of a cutter is prolonged, the processing cost is effectively reduced, and the processing precision and the processing efficiency are improved. And the damping force can be adjusted by changing the current in the magnetorheological damping supporting mechanism 5. The electric pulse assisted cutting can reduce the residual stress introduced by cutting and eliminate the residual stress in real time, thereby renovating the multi-pass process route procedure of the traditional cutting machining-heat treatment process of the thin-wall cylinder 7.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a thin wall cylinder internal stay device which characterized in that: including dabber (1), the cover is equipped with at least a pair of mount pad (2) that can be close to relatively and keep away from and supports ejector pad (3) on dabber (1), the week side of mount pad (2) is equipped with guide (4) of a plurality of interval arrangements, each all slide on guide (4) and be equipped with and be used for supporting magnetorheological damping supporting mechanism (5) of propping thin wall drum (7) inner wall, magnetorheological damping supporting mechanism (5) and relative support have connecting rod (6) to articulate between ejector pad (3), the both ends of dabber (1) are equipped with and are used for making mount pad (2) and support ejector pad (3) be close to or the regulating part (11) of keeping away from, and are mated be equipped with elastic component (12) that reset between mount pad (2) and the ejector pad (3).
2. The thin-walled cylinder internal stay device of claim 1, characterized in that: the magnetorheological damping supporting mechanism (5) comprises a cylinder body (51) and a piston (52), the cylinder body (51) is arranged on the guide piece (4) in a sliding mode, the connecting rod (6) is hinged between the cylinder body (51) and the opposite pushing block (3), an exciting coil loop (53) and magnetorheological fluid (54) are arranged in the cylinder body (51), one end of the piston (52) is movably inserted into the magnetorheological fluid (54), the other end of the piston extends out of the cylinder body (51) and is provided with a supporting claw (55) used for supporting the inner wall of the thin-walled cylinder (7), and a pre-tightening elastic piece (56) is arranged between the piston (52) and the cylinder body (51).
3. The thin-walled cylindrical internal stay device of claim 2, wherein: both ends of the cylinder body (51) are provided with end covers (511), the connecting rod (6) is hinged between the end cover (511) at one end of the cylinder body (51) and the opposite pushing block (3), and the piston (52) penetrates through the middle of the end cover (511) at the other end of the cylinder body (51).
4. The thin-walled cylinder internal stay device of claim 3, characterized in that: the end cover (511) is mounted on the cylinder body (51) through bolts.
5. The thin-walled cylindrical internal stay device of claim 2, wherein: the cylinder body (51) is provided with a liquid injection port (512).
6. The thin-walled cylinder internal stay device of claim 1, characterized in that: the installation seat (2) and the abutting push block (3) are provided with two pairs, the installation seat (2) is integrally formed and fixed in the middle of the mandrel (1), the abutting push block (3) is sleeved on the mandrel (1) in a sliding mode, and the adjusting pieces (11) at the two ends of the mandrel (1) are abutted to the outer sides of the abutting push block (3) respectively.
7. The thin-walled cylindrical internal stay device of any one of claims 1 to 6, wherein: the adjusting piece (11) is sleeved on the mandrel (1) and is in threaded connection with the mandrel (1).
8. The utility model provides a turn-milling combined machining device, includes lathe (8), the head and the tail both ends of lathe (8) are equipped with chuck mechanism (81) and tailstock (82) respectively, lathe (8) are equipped with knife rest (83) in the cunning between chuck mechanism (81) and tailstock (82), its characterized in that: the turning and milling composite processing device also comprises the thin-wall cylinder internal support device as claimed in any one of claims 1 to 7, and a rotary ejector pin (821) for ejecting the mandrel (1) is arranged on the tailstock (82).
9. The turn-milling combined machining device according to claim 8, characterized in that: the electric power tool is characterized in that a chuck power connection mechanism (811) electrically connected with the chuck mechanism (81) is arranged on the machine tool (8), an ejector pin power connection mechanism (811) electrically connected with the rotating ejector pin (821) is arranged on the tailstock (82), and the chuck power connection mechanism (811) and the ejector pin power connection mechanism (811) are respectively connected with the positive electrode and the negative electrode of a pulse power supply.
10. A turning and milling combined machining method is characterized in that: the turning and milling combined machining device of claim 9 is adopted, and comprises the following steps:
step S1, installing the thin-wall cylinder internal support device: inserting the thin-wall cylinder internal support device into the thin-wall cylinder (7), and enabling each magnetorheological damping support mechanism (5) to be supported on the inner wall of the thin-wall cylinder (7) through an adjusting piece (11);
step S2, electrifying the magnetorheological damping support mechanism (5): electrifying the magnetorheological damping supporting mechanism (5), and adjusting the current to enable the magnetorheological damping supporting mechanism (5) to generate corresponding damping force on the thin-wall cylinder (7);
step S3, fixing the thin-wall cylinder (7): clamping one end of the mandrel (1) or the thin-wall cylinder (7) by a chuck mechanism (81), and propping the other end of the mandrel (1) by a rotary thimble (821) to form a fixed clamping mode of clamping one top;
step S4, electric pulse assisted processing: and starting the machine tool (8), and when the cutter on the cutter rest (83) is in contact with the outer wall of the thin-wall cylinder (7), turning on the pulse power supply and adjusting parameters of the pulse power supply to enable the surface of the thin-wall cylinder (7) to generate electric pulses to start machining the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107240.6A CN114535729A (en) | 2022-01-28 | 2022-01-28 | Thin-wall cylinder inner support device, turning and milling composite processing device and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107240.6A CN114535729A (en) | 2022-01-28 | 2022-01-28 | Thin-wall cylinder inner support device, turning and milling composite processing device and processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114535729A true CN114535729A (en) | 2022-05-27 |
Family
ID=81673894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210107240.6A Pending CN114535729A (en) | 2022-01-28 | 2022-01-28 | Thin-wall cylinder inner support device, turning and milling composite processing device and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114535729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122130A (en) * | 2022-08-09 | 2022-09-30 | 深圳市嘉业精密五金有限公司 | Shockproof clamping jig and lens adjusting gear ring machining process applying same |
| CN118288085A (en) * | 2024-06-06 | 2024-07-05 | 杭州税丰机械科技有限公司 | Quick tensioning mechanism for self-adaptive tapping and drilling clamp |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358144A (en) * | 2012-04-05 | 2013-10-23 | 中国石油天然气集团公司 | Internal expanding type clamping mechanism of large-caliber hot bend bevelling machine |
| CN104439358A (en) * | 2013-09-12 | 2015-03-25 | 西安志越机电科技有限公司 | Thin-wall round pipe turning fixture |
| US20150224582A1 (en) * | 2014-02-11 | 2015-08-13 | Rolls-Royce Plc | Fixture |
| CN107030522A (en) * | 2017-05-24 | 2017-08-11 | 西北工业大学 | The magnetorheological damping supporting device of vibration suppression is processed towards complex thin-wall component |
| CN110145564A (en) * | 2019-01-22 | 2019-08-20 | 天津大学 | A kind of controllable flexible shock-absorbing device for thin-walled parts machining |
| CN210849277U (en) * | 2019-11-25 | 2020-06-26 | 哈尔滨广瀚动力产业发展有限公司 | Drilling tool for machining thin-walled cylinder |
| CN210996506U (en) * | 2019-08-12 | 2020-07-14 | 湖南科技大学 | Pulse current and ultrasonic composite auxiliary cutting device |
| CN111734772A (en) * | 2020-06-16 | 2020-10-02 | 大连理工大学 | Magnetorheological vibration suppression method in thin-wall part machining |
-
2022
- 2022-01-28 CN CN202210107240.6A patent/CN114535729A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358144A (en) * | 2012-04-05 | 2013-10-23 | 中国石油天然气集团公司 | Internal expanding type clamping mechanism of large-caliber hot bend bevelling machine |
| CN104439358A (en) * | 2013-09-12 | 2015-03-25 | 西安志越机电科技有限公司 | Thin-wall round pipe turning fixture |
| US20150224582A1 (en) * | 2014-02-11 | 2015-08-13 | Rolls-Royce Plc | Fixture |
| CN107030522A (en) * | 2017-05-24 | 2017-08-11 | 西北工业大学 | The magnetorheological damping supporting device of vibration suppression is processed towards complex thin-wall component |
| CN110145564A (en) * | 2019-01-22 | 2019-08-20 | 天津大学 | A kind of controllable flexible shock-absorbing device for thin-walled parts machining |
| CN210996506U (en) * | 2019-08-12 | 2020-07-14 | 湖南科技大学 | Pulse current and ultrasonic composite auxiliary cutting device |
| CN210849277U (en) * | 2019-11-25 | 2020-06-26 | 哈尔滨广瀚动力产业发展有限公司 | Drilling tool for machining thin-walled cylinder |
| CN111734772A (en) * | 2020-06-16 | 2020-10-02 | 大连理工大学 | Magnetorheological vibration suppression method in thin-wall part machining |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122130A (en) * | 2022-08-09 | 2022-09-30 | 深圳市嘉业精密五金有限公司 | Shockproof clamping jig and lens adjusting gear ring machining process applying same |
| CN118288085A (en) * | 2024-06-06 | 2024-07-05 | 杭州税丰机械科技有限公司 | Quick tensioning mechanism for self-adaptive tapping and drilling clamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114535729A (en) | Thin-wall cylinder inner support device, turning and milling composite processing device and processing method | |
| CN108044318B (en) | Machining process of thin-wall and deep-hole cylinder sleeve | |
| CN113714812B (en) | Adjustable boring and rolling compound cutter | |
| CN114378382A (en) | Electric pulse auxiliary processing device for processing slender shaft parts and processing method thereof | |
| CN203062334U (en) | Workpiece clamping device for lathe machining | |
| CN116690092A (en) | Electric chuck and use method thereof | |
| CN206898432U (en) | One kind lengthens round bar and supports new drill gun | |
| CN210909118U (en) | Clamping device and processing equipment for turning end face and processing center hole of bolt | |
| CN113059215A (en) | Machining equipment for outer circle of large-diameter super-long workpiece | |
| CN104690325A (en) | Hydraulic die-tensioning device | |
| CN108907918B (en) | Cylindrical grinding machine | |
| RU2264889C2 (en) | Universal table machine tool | |
| CN111055148B (en) | Centre gripping frock and system of processing | |
| CN113478231A (en) | Follow-up stable rolling device for machining slender shaft parts | |
| CN102259290B (en) | Precise grinding machine for processing solar energy prism | |
| CN203738450U (en) | Cylinder barrel turning fixture | |
| US7044844B2 (en) | Shaping pulley assembly for belt notching machine | |
| CN100415418C (en) | Radial drilling machine capable of conducting boring processing | |
| CN220330997U (en) | Honing head rounding tool | |
| CN105798342A (en) | Lathe chuck device for preventing axial sliding of workpieces | |
| CN219521475U (en) | Cutter adjusting device | |
| CN115890359B (en) | Deep hole drill bit processing equipment | |
| CN204396970U (en) | Large revolving body gun drilling device | |
| CN218904882U (en) | Elastic honing machine for honing rod | |
| RU2236328C1 (en) | Boring head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |