CN113857767A - Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part - Google Patents
Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part Download PDFInfo
- Publication number
- CN113857767A CN113857767A CN202111247655.5A CN202111247655A CN113857767A CN 113857767 A CN113857767 A CN 113857767A CN 202111247655 A CN202111247655 A CN 202111247655A CN 113857767 A CN113857767 A CN 113857767A
- Authority
- CN
- China
- Prior art keywords
- machining
- tool head
- ball
- arc
- processing
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a tool head and a method for self-adaptive machining and forming of a micro-texture on the surface of a curved thin-wall part, wherein the tool head comprises a foundation column, a plurality of arc-shaped hydraulic channels are arranged in one end of the foundation column, the central lines of the arc-shaped hydraulic channels are in the same plane and are concentric, a piston rod is arranged in each arc-shaped hydraulic channel, the piston rods and the arc-shaped hydraulic channels are sealed through piston rings, a first machining ball is fixed at one end of each piston rod, and a hydraulic system controls the piston rods to move in the arc-shaped hydraulic channels so as to drive the machining balls to extend out of one side of the foundation column. The tool head can be adaptive to fit the surface of the curved thin-wall part, and micro-textures with relatively consistent depth are processed under the accurate control of pressure.
Description
Technical Field
The invention relates to the field of plate incremental forming processes, in particular to a tool head and a method for self-adaptive machining and forming of a micro-texture on the surface of a curved surface thin-wall part based on pressure control.
Background
At present, common preparation processes of the micro texture on the surface of a workpiece mainly comprise a micro milling technology, a laser processing technology, an electric spark processing technology and the like. Generally, these microtexture preparation processes are difficult to be coordinated in terms of processing efficiency, processing accuracy, processing cost, and the like. The plate asymptotic forming process has the characteristics of short cycle, low cost, no dependence on a die, high flexibility and the like. Thus, a tool head of reasonable design may be suitable for use in short cycle production modes for small batches of aircraft parts.
The inventor finds that two difficulties exist in the process of gradually forming the plate, and the processing and forming of the micro-texture on the surface of the curved thin-wall part are required to meet the requirements. Firstly, no matter which type of curved surface thin-wall piece is processed, the contact force between a tool head and the surface of a workpiece is difficult to ensure to be equal everywhere, so that the depths of the processed microtextures are different; secondly, when the micro-texture on the surface of the workpiece is processed, the distribution of the processed micro-texture is often uneven for the surface of a curved thin-wall part with radian change. Therefore, the tool head transmits the same hydraulic pressure to the tungsten carbide hard alloy ball by means of reliable sliding of the piston rod under the accurate pressure control, and the problem that the contact force between the tool head and the surface of a workpiece is unequal is solved; meanwhile, the structural design of the tool head can enable the tungsten carbide hard alloy ball to be in self-adaptive contact with the surface of a workpiece, and micro textures with uniform distribution are processed, so that the processing requirement of the micro textures on the surface of a curved thin-walled workpiece can be better met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the pressure control-based tool head and the pressure control-based method for the self-adaptive machining and forming of the micro-texture on the surface of the curved surface thin-wall part, which can realize the machining and forming of the micro-texture on the surface of the curved surface thin-wall part by applying the plate incremental forming process, are beneficial to solving the problem that the machining and forming of the micro-texture on the surface of the curved surface thin-wall part are difficult to realize by applying the plate incremental forming process at present, and are beneficial to reducing the machining cost of the micro-texture on the surface of the curved surface thin-wall part.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a tool head for self-adaptive processing and forming of a micro-texture on the surface of a curved thin-wall part, which comprises a base column, wherein a plurality of arc-shaped hydraulic channels are arranged in one end of the base column, the central lines of the arc-shaped hydraulic channels are in the same plane and are concentric, a piston rod is arranged in each arc-shaped hydraulic channel, the piston rod and the arc-shaped hydraulic channels are sealed through piston rings, a first processing ball is fixed at one end of each piston rod, and a hydraulic system controls the piston rods to move in the arc-shaped hydraulic channels so as to drive the processing balls to extend out of one side of the base column.
As a further technical scheme, the hydraulic pressure channel device further comprises a second machining ball which is fixed at the corner of the lower end of the foundation column and is positioned at the inner ring of the arc-shaped hydraulic channel at the innermost ring.
As a further technical scheme, the included angle between the axis of the second processing ball and the horizontal plane is 45 degrees.
As a further technical scheme, an installation surface which forms an angle of 45 degrees with the horizontal plane is formed at the corner of the lower end of the foundation column; the mounting surface is provided with a hemispherical pit, the outer surface of the mounting surface is provided with a thread, and the second processing ball is fixed in the hemispherical pit through a nut.
As a further technical scheme, a main hydraulic channel which is horizontally arranged is arranged at a position close to the bottom of the base column, and the main hydraulic channel is communicated with a plurality of arc-shaped hydraulic channels and is connected with a hydraulic system.
As a further technical scheme, a thread is processed on the outer surface of one end of the piston rod, a hemispherical pit is processed on the end face of the end of the piston rod, and a first processing ball is installed in the pit and fixed through a nut; the other end of the piston rod is provided with a piston ring groove.
As a further technical scheme, the radian of the arc-shaped hydraulic channel is 90 degrees.
According to a further technical scheme, the first processing ball and the second processing ball are both tungsten carbide hard alloy balls.
In a second aspect, the invention further provides an assembly method of the tool head for the adaptive machining forming of the micro-texture on the surface of the curved thin-wall part, which comprises the following steps:
1) piston rings are respectively assembled on the piston rods;
2) respectively assembling the first processing balls into the hemispherical pits processed at the extending ends of the piston rods, and screwing the screw caps; pushing the corresponding piston rod assembly body along each arc-shaped hydraulic channel;
3) placing the second processing ball into the hemispherical pit processed at the right lower end of the base column and screwing the screw cap;
4) fixing the upper end of the assembled tool head on a machine tool shank, and mounting the machine tool shank on a machine tool spindle;
5) and after the tool head finishes clamping, connecting the hydraulic system with the tool head.
In a third aspect, the invention further provides a method for processing the tool head for the surface microtexture self-adaptive processing forming of the curved surface thin-wall part, which comprises the following steps:
the tool head is arranged on a numerical control machine tool, a second machining ball is used as a coordinate reference point, and a machining route is edited according to the geometric shape of the thin-wall part; before the machining is started, the tool head is subjected to tool setting, so that the first machining ball just contacts the surface of a workpiece; the first processing ball has a feeding amount which is in accordance with the requirements of processing micro texture relative to the surface of the workpiece through the control of numerical control equipment; a hydraulic system is utilized to slowly push a plurality of piston rods to slide independently, so that the first processing ball is attached to the surface of the workpiece in a self-adaptive manner; then, a hydraulic system provides corresponding hydraulic pressure according to the workpiece material, so that the first machining ball and the second machining ball leave micron-sized imprints with consistent depth on the surface of the workpiece; and finally finishing the processing of the microtexture according to the edited processing route.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
1) the tool head can be adaptive to fit the surface of the curved thin-wall part, and micro-textures with relatively consistent depth are processed under the accurate control of pressure. The tool head can provide different hydraulic pressures by a hydraulic system according to different materials of a processed workpiece, when piston rods arranged in different arc-shaped hydraulic channels are pushed by the hydraulic pressures, the piston rods can make a processing ball attached to the surface of the workpiece in a self-adaptive manner according to the shape of the surface of the workpiece, and micro-textures with relatively consistent depths are accurately controlled and processed by the aid of pressure.
2) The high-efficiency processing of the micro texture distribution on the surface of the curved surface thin-wall part can be realized. The arc-shaped hydraulic channel and the piston rod of the tool head are designed into quarter circular rings with different diameters, and after the tool head is assembled, the center lines of the arc-shaped hydraulic channel and the piston rod are in the same plane and meet the requirement of concentricity. The distance between the assembled respective machining balls is fixed. Considering the large size of the machined workpiece and the large curvature of the machined workpiece surface that is contacted during one machining pass, the pitch of the machined microtexture can be considered fixed when the machining ball is adaptively engaged with the workpiece surface.
3) The high-quality processing with relatively consistent micro-texture shape on the surface of the curved surface thin-wall part can be realized. The tool head processes the micro texture by adopting a multi-pass rolling method, and the difference of the shapes of the processed micro textures can be small by utilizing the continuous rolling of processing balls with the same diameter on different passes.
4) The tool head has wide applicability. Aiming at curved surface thin-wall parts with different requirements on the micro-texture size, a piston rod with hemispherical pits with different diameters can be selected and processed, and a processing ball with corresponding diameter and a corresponding fixing nut are matched, so that the tool head can adaptively process the micro-textures with different requirements on the size.
5) The tool head comprises a fixed second machining ball and a plurality of adjustable first machining balls, the position of the lower end of the base column for assembling the second machining ball is fixed, and the position can be used as a reference point for editing a machining route of the tool head by numerical control equipment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a left side view of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is a right side view of the overall structure of the present invention;
FIG. 4 is an exploded view of the present invention;
FIG. 5 is a view showing the internal structure of the assembly of the present invention;
FIG. 6 is a schematic structural view of a thin-walled workpiece machined by a 45-degree circular truncated cone according to the invention;
FIG. 7 is a schematic structural view of a semi-spherical thin-walled workpiece machined by the method of the invention;
wherein, 1, a base column; 2, a piston rod; 3, a piston ring; 4, hard alloy balls; 5, fixing a screw cap; 6. a 45-degree circular truncated cone thin-wall part; 7. a semi-spherical thin walled member;
1-1, a branch hydraulic channel; 1-2, branch hydraulic channel; 1-3, branch hydraulic channel; 1-4, a main hydraulic channel; 1-5, fixing a processing end; 1-6, a hydraulic system connector; 2-1 piston rod; 2-2, a piston rod; 2-3, a piston rod; 3-1, piston rings; 3-2, piston rings; 3-3, piston rings; 4-1, hard alloy balls; 4-2, hard alloy balls; 4-3, hard alloy balls; 4-4, hard alloy balls; 5-1, fixing a screw cap; 5-2, fixing a screw cap; 5-3, fixing a screw cap; 5-4, fixing a screw cap.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
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 invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention shall only be construed to mean that they correspond to the directions of the drawing itself, including up, down, left and right, and do not limit the structure, but merely to facilitate the description of the invention and to simplify the description, and shall not indicate or imply that the equipment or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore shall not be construed as limiting the invention.
The first embodiment is as follows:
the embodiment provides a pressure control-based tool head and a pressure control-based method for self-adaptive machining and forming of a micro-texture on the surface of a curved-surface thin-wall part, and the tool head selects a multi-pass rolling mode to self-adaptively machine the micro-texture in consideration of the limitation of machining the micro-texture on the surface of a workpiece by applying a plate incremental forming process. The tool head for the self-adaptive machining forming of the micro-texture on the surface of the curved surface thin-wall part based on pressure control comprises: the base column is of a rod-shaped structure and used for clamping, and a processing end of the base column is of a cuboid structure. A rectangular main hydraulic channel is machined in the machining end, a branch hydraulic channel is machined around the main hydraulic channel, the branch hydraulic channel is in a quarter-circle ring shape with different diameters, and the center lines of the branch hydraulic channels are in the same plane and meet the concentricity requirement. And a fixed processing end forming an included angle of 45 degrees with the horizontal plane is processed at the right lower end of the foundation column, threads are processed on the outer surface of the fixed processing end, and a hemispherical pit is processed on the end surface of the fixed processing end. A hydraulic system connecting port is processed at the left lower end of the foundation column, and the effective connection with a hydraulic system is realized by adopting a threaded connection mode; the piston rod is characterized in that the main body of the piston rod is a quarter-circle ring, threads are machined on the outer surface of the outer extending end of the piston rod, a hemispherical pit is machined on the end surface of the outer extending end, and a piston ring groove is machined on the other end of the piston rod; the piston ring is used for sealing and avoiding leakage of hydraulic oil; the tungsten carbide hard alloy ball can continuously roll on the surface of a workpiece, the forming quality of a microtexture is influenced by considering the uncertainty of rolling in the machining process, and the surface of the tungsten carbide hard alloy ball is smooth; the fixing nut adopts a threaded connection mode to fix the tungsten carbide hard alloy ball, and can simultaneously meet the requirement of continuous rolling of the tungsten carbide hard alloy ball at an assembly position. According to the structure, the piston rod can be pushed to slide along the branch hydraulic channel by adjusting the liquid pressure of the main hydraulic channel, so that the hydraulic pressure transmitted to the tungsten carbide hard alloy ball through the piston rod is adjusted, a qualified microtexture is left on the surface of the workpiece in a self-adaptive manner, and the problem of uneven microtexture formation caused by the fact that the contact angle and the contact force between the tool head and the surface of the workpiece cannot be adjusted is solved.
The above structure is further described with reference to the specific drawings;
the overall structure of the tool head for the adaptive machining and forming of the surface microtexture of the curved thin-walled workpiece based on pressure control according to the present embodiment is shown in fig. 1, fig. 2, and fig. 3, where fig. 1 is a left side view, fig. 2 is a front view, and fig. 3 is a right side view. The tool head main body part is of a rod-shaped structure, when the tool head is used, the upper end of the tool head main body part is clamped on forming equipment through a machine tool shank, and the lower end of the tool head main body part is a machining end and is suspended in the air. The explosion view of the tool head is shown in figure 4, which comprises a base column 1, a piston rod 2-1 for self-adaptively adjusting the machining position of the tool head, a piston rod 2-2, a piston rod 2-3, a piston ring 3-1 for meeting the sealing requirement, a piston ring 3-2, a piston ring 3-3, a tungsten carbide hard alloy ball 4-1 for machining the surface of a workpiece, a tungsten carbide hard alloy ball 4-2, a tungsten carbide hard alloy ball 4-3, a tungsten carbide hard alloy ball 4-4, a fixing nut 5-1 for fixing the position of the tungsten carbide hard alloy ball, a fixing nut 5-2, a fixing nut 5-3 and a fixing nut 5-4; further, the piston rod 2-1, the piston rod 2-2 and the piston rod 2-3 are arc-shaped piston rods, the radian is equal to 90 degrees, the piston ring 3-1, the piston ring 3-2 and the piston ring 3-3 are sleeved on the corresponding piston rod 2-1, the piston rod 2-2 and the piston rod 2-3, one end of the piston rod 2-1, the piston rod 2-2 and the piston rod 2-3 is provided with a tungsten carbide hard alloy ball 4-1, a tungsten carbide hard alloy ball 4-2 and a tungsten carbide hard alloy ball 4-3, and the three tungsten carbide hard alloy balls are respectively fixed through corresponding fixing nuts 5-1, 5-2 and 5-3.
The internal structure of the tool head assembly body is shown in figure 5, in order to meet the requirement of a micro-weave structure with self-adaptive machining depth, a main hydraulic channel 1-4 is machined in a base column 1, the main hydraulic channel 1-4 is horizontally arranged, a branch hydraulic channel 1-1, a branch hydraulic channel 1-2 and a branch hydraulic channel 1-3 are machined around the main hydraulic channel, the main body of each branch hydraulic channel is in a quarter-circle shape, the three branch hydraulic channels meet the concentricity requirement in the same plane, and the three branch hydraulic channels are communicated with the main hydraulic channel 1-4 which is horizontally arranged; the piston rod 2-1 is arranged in the branch hydraulic channel 1-1, the piston rod 2-2 is arranged in the branch hydraulic channel 1-2, and the piston rod 2-3 is arranged in the branch hydraulic channel 1-3; the main body part of the piston rod is a quarter circular ring, and the central line of the circular ring part of the piston rod and the central line of the branch hydraulic channel meet the requirement of coaxiality in the assembling process. Meanwhile, as shown in fig. 4, a hydraulic system connecting port 1-6 is processed at the left lower end of the base column 1, and the hydraulic system supplies liquid to the main hydraulic channel 1-4 through the connecting port, so that the control of the three piston rods is realized; furthermore, a fixed processing end 1-5 forming an angle of minus 45 degrees with the horizontal plane is processed at the right lower end of the foundation column 1, a hemispherical pit is processed on the end surface of the fixed processing end 1-5, and a tungsten carbide hard alloy ball 4-4 is fixed in the hemispherical pit through a fixing nut 5-4.
Further, in the present embodiment, four cemented tungsten carbide balls are taken as an example for description, but the number of the cemented tungsten carbide balls is not limited to four, and may be two, three, five, six, etc., and specifically, the number of the cemented tungsten carbide balls is adjusted according to actual processing requirements, and after the number of the cemented tungsten carbide balls is adjusted, the number of the piston rods, the fixing nuts, etc. which are matched with the cemented tungsten carbide balls is also adjusted.
Further, the piston ring overhang is stretched in a horizontal direction for a certain length to form a hemispherical recess, and is threaded along its outer surface for assembly.
Furthermore, the hemispherical pits processed by the piston rod need to be smooth and smooth, wear-resistant and reliable, so that the tungsten carbide hard alloy ball can continuously roll, and is small in wear and uniform in wear.
Furthermore, the position of the right lower end of the foundation column for assembling the tungsten carbide hard alloy ball is fixed and is used as a reference point of a machining route of the editing tool head of the numerical control equipment.
Furthermore, after the assembly of the tungsten carbide hard alloy ball and the fixing nut is completed at the right lower end of the base column, the horizontal farthest point of the fixing nut is shorter than the horizontal farthest point of the tungsten carbide hard alloy ball; the vertical lowest point of the fixing nut is higher than that of the tungsten carbide hard alloy ball
The tool head is installed in the sequence that a piston ring 3-1, a piston ring 3-2 and a piston ring 3-3 are respectively assembled in ring grooves on a piston rod 2-1, a piston rod 2-2 and a piston rod 2-3; then, respectively assembling 4-1 parts of tungsten carbide hard alloy ball, 4-2 parts of tungsten carbide hard alloy ball and 4-3 parts of tungsten carbide hard alloy ball into hemispherical pits processed at the extending ends of the piston rod 2-1, the piston rod 2-2 and the piston rod 2-3; then respectively screwing a fixing nut 5-1, a fixing nut 5-2 and a fixing nut 5-3 which are used for fixing 4-1 of the tungsten carbide hard alloy ball, 4-2 of the tungsten carbide hard alloy ball and 4-3 of the tungsten carbide hard alloy ball; then pushing the part of the assembly body into a branch hydraulic channel 1-1, a branch hydraulic channel 1-2 and a branch hydraulic channel 1-3 of the foundation column 1; then, assembling tungsten carbide hard alloy steel 4-4 into a hemispherical pit machined by the fixed machining end 1-4 at the right lower end of the foundation column 1; and then screwing a fixing nut 5-4 for fixing the position of the tungsten carbide hard alloy ball 4-4. When the tool head is used, the upper end of the tool head is required to be clamped on a tool handle, and the tool handle is arranged on a main shaft of a machine tool; then, connecting ports 1-6 of a hydraulic system at the left lower end of the foundation column 1 with the hydraulic system in a threaded manner; and finally, performing surface micro-texture self-adaptive machining forming on the curved surface thin-wall part according to the track setting of the numerical control equipment.
In the specific implementation process, the invention provides a structural schematic diagram for respectively processing a 45-degree circular truncated cone thin-wall part 6 and a semi-spherical thin-wall part 7 by using a tool head for self-adaptive processing and forming of a micro-texture on the surface of a curved surface thin-wall part based on pressure control.
After the tool head is assembled and clamped, a machining route is edited according to the geometric shape of the 45-degree circular truncated cone thin-wall part by taking the tungsten carbide hard alloy balls 4-4 at fixed positions as coordinate reference points after the 45-degree circular truncated cone thin-wall part 6 is machined. Before the machining is started, the tool head needs to be subjected to tool setting, so that the tungsten carbide hard alloy ball 4-4 just contacts the surface of a workpiece; then, controlling by numerical control equipment to ensure that the tungsten carbide hard alloy ball 4-4 has a feeding amount which meets the requirements of processing micro texture relative to the surface of the workpiece; then, a hydraulic system is utilized to slowly push the piston rod 2-1, the piston rod 2-2 and the piston rod 2-3 to independently slide, so that the tungsten carbide hard alloy ball 4-1, the tungsten carbide hard alloy ball 4-2 and the tungsten carbide hard alloy ball 4-3 are attached to the surface of the workpiece in a self-adaptive manner; then, a hydraulic system provides corresponding hydraulic pressure according to the workpiece material to enable the tungsten carbide hard alloy ball to leave micron-sized imprints with consistent depth on the surface of the workpiece; and finally finishing the processing of the microtexture according to the edited processing route.
The method for processing the semi-spherical thin-wall part 7 is as described for processing a 45-degree circular truncated cone thin-wall part. Although the surface of the semi-spherical thin-walled workpiece has radian change, when the piston rod 2-1, the piston rod 2-2 and the piston rod 2-3 are slowly pushed by hydraulic pressure provided by a hydraulic system to slide independently, the tungsten carbide hard alloy ball 4-1, the tungsten carbide hard alloy ball 4-2 and the tungsten carbide hard alloy ball 4-3 can be self-adaptively attached to the surface of the workpiece, and the problem of uneven distribution of micro texture caused by the change of the radian of the surface of the workpiece is not considered. Therefore, the tool head has wide applicability whether the tool head is used for processing curved surface thin-wall parts with radian changes or curved surface thin-wall parts without radian changes.
It should be noted that the materials of the tungsten carbide hard alloy ball 4-1, the tungsten carbide hard alloy ball 4-2 and the tungsten carbide hard alloy ball 4-3 can be replaced by high-hardness wear-resistant processing balls such as tungsten-titanium-cobalt hard alloy balls, zirconia ceramic balls and silicon carbide ceramic balls.
The invention can realize that the tool head can be self-adaptively attached to the surface of a curved surface thin-wall part, and micro-textures with relatively consistent depth are processed under the accurate control of pressure. The tool head can provide different hydraulic pressures by a hydraulic system according to different materials of a processed workpiece, when piston rods arranged in different arc-shaped hydraulic channels are pushed by the hydraulic pressures, the piston rods can make a processing ball attached to the surface of the workpiece in a self-adaptive manner according to the shape of the surface of the workpiece, and micro-textures with relatively consistent depths are accurately processed by means of pressure control.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The tool head comprises a foundation column and is characterized in that a plurality of arc hydraulic channels are arranged inside one end of the foundation column, the central lines of the arc hydraulic channels are concentric in the same plane, a piston rod is arranged in each arc hydraulic channel, the piston rods are sealed with the arc hydraulic channels through piston rings, a first machining ball is fixed at one end of each piston rod, a hydraulic system controls the piston rods to move in the arc hydraulic channels, and then the machining balls are driven to extend out of one side of the foundation column.
2. The tool head for the adaptive machining of the microtexture on the surface of the curved thin-walled workpiece according to claim 1, further comprising a second machining ball fixed to a corner of the lower end of the base pillar and located at the inner ring of the innermost arc-shaped hydraulic channel.
3. The tool head for the adaptive machining of the microtexture on the surface of a curved thin-walled workpiece according to claim 2, wherein the angle between the axis of the second machining ball and the horizontal plane is 45 °.
4. The tool head for the surface microtexture adaptive machining and forming of the curved-surface thin-wall part according to claim 2, wherein a mounting surface which forms an angle of 45 degrees with a horizontal plane is formed at a corner of the lower end of the base column; the mounting surface is provided with a hemispherical pit, the outer surface of the mounting surface is provided with a thread, and the second processing ball is fixed in the hemispherical pit through a nut.
5. The tool head for adaptive machining of the microtexture on the surface of the curved thin-walled workpiece according to claim 1, wherein a horizontally disposed main hydraulic channel is disposed near the bottom of the base pillar, and the main hydraulic channel is connected to a plurality of arc-shaped hydraulic channels, which are connected to a hydraulic system.
6. The tool head for the adaptive machining and forming of the microtexture on the surface of the curved thin-walled workpiece according to claim 1, wherein the outer surface of one end of the piston rod is provided with threads, the end surface of the end of the piston rod is provided with a hemispherical pit, and the first machining ball is installed in the pit and fixed through a nut; the other end of the piston rod is provided with a piston ring groove.
7. The tool head for the adaptive machining of the microtexture on the surface of a curved thin-walled workpiece according to claim 1, wherein the arc of the arcuate hydraulic channel is 90 °.
8. The tool head for the adaptive machining of the microtexture on the surface of the curved thin-walled workpiece according to claim 1, wherein the first machining ball and the second machining ball are both cemented carbide balls.
9. The method for assembling the tool head for the surface microtexture self-adaptive machining forming of the curved thin-walled part according to any one of claims 1 to 8, is characterized in that:
1) piston rings are respectively assembled on the piston rods;
2) respectively assembling the first processing balls into the hemispherical pits processed at the extending ends of the piston rods, and screwing the screw caps; pushing the corresponding piston rod assembly body along each arc-shaped hydraulic channel;
3) placing the second processing ball into the hemispherical pit processed at the right lower end of the base column and screwing the screw cap;
4) fixing the upper end of the assembled tool head on a machine tool shank, and mounting the machine tool shank on a machine tool spindle;
5) and after the tool head finishes clamping, connecting the hydraulic system with the tool head.
10. The method for processing the microtexture by using the tool head for the surface microtexture self-adaptive processing and forming of the curved thin-walled workpiece according to any one of claims 1 to 8, is characterized in that:
the tool head is arranged on a numerical control machine tool, a second machining ball is used as a coordinate reference point, and a machining route is edited according to the geometric shape of the thin-wall part; before the machining is started, the tool head is subjected to tool setting, so that the first machining ball just contacts the surface of a workpiece; then the first processing ball has a feeding amount which is in accordance with the requirements of processing micro texture relative to the surface of the workpiece through the control of numerical control equipment; a hydraulic system is utilized to slowly push a plurality of piston rods to slide independently, so that the first processing ball is attached to the surface of the workpiece in a self-adaptive manner; then, a hydraulic system provides corresponding hydraulic pressure according to the workpiece material to enable the first machining ball and the second machining ball to leave micron-scale imprints with consistent depth on the surface of the workpiece; and finally finishing the processing of the microtexture according to the edited processing route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111247655.5A CN113857767B (en) | 2021-10-26 | 2021-10-26 | Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111247655.5A CN113857767B (en) | 2021-10-26 | 2021-10-26 | Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113857767A true CN113857767A (en) | 2021-12-31 |
| CN113857767B CN113857767B (en) | 2022-08-12 |
Family
ID=78997649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111247655.5A Active CN113857767B (en) | 2021-10-26 | 2021-10-26 | Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113857767B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876935A (en) * | 2022-04-27 | 2022-08-09 | 中国舰船研究设计中心 | Internal and external balance type hydraulic nut for mounting ship propeller and mounting method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155203A1 (en) * | 2004-01-17 | 2005-07-21 | Prevey Paul S. | Method and apparatus for improving the magnitude of compressive stress developed in the surface of a part |
| WO2010137467A1 (en) * | 2009-05-25 | 2010-12-02 | Sekiguchi Akio | Method and apparatus for incremental forming |
| CN103317433A (en) * | 2013-05-27 | 2013-09-25 | 宁波大学 | Aspheric surface polishing tool capable of self-adaptively balancing polishing stress |
| CN104759829A (en) * | 2015-04-22 | 2015-07-08 | 济南职业学院 | Self-adaptive surface treatment device and rolling method |
| CN104858281A (en) * | 2015-02-12 | 2015-08-26 | 上海交通大学 | Plate double-side three-point incremental forming device |
| CN105478539A (en) * | 2015-12-29 | 2016-04-13 | 哈尔滨工业大学（威海） | Plate multipoint progressive forming device |
| CN208019246U (en) * | 2018-03-28 | 2018-10-30 | 吉林大学 | The adaptive tool heads of multiple spot integrated form for rotating progressive molding |
| CN109877526A (en) * | 2019-02-01 | 2019-06-14 | 浙江工业大学 | Hydraulic-driven pressure stabilizing gear teeth face rolling tool |
| CN110102961A (en) * | 2019-06-13 | 2019-08-09 | 山东大学 | The hydraulically adjustable tool heads and method of macro/micro-structure are prepared for progressive molding |
| CN110340748A (en) * | 2019-05-30 | 2019-10-18 | 浙江工业大学 | A kind of rotary ultrasonic method processes the method and device of micro- hemisphere cavity plate array |
-
2021
- 2021-10-26 CN CN202111247655.5A patent/CN113857767B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155203A1 (en) * | 2004-01-17 | 2005-07-21 | Prevey Paul S. | Method and apparatus for improving the magnitude of compressive stress developed in the surface of a part |
| WO2010137467A1 (en) * | 2009-05-25 | 2010-12-02 | Sekiguchi Akio | Method and apparatus for incremental forming |
| CN103317433A (en) * | 2013-05-27 | 2013-09-25 | 宁波大学 | Aspheric surface polishing tool capable of self-adaptively balancing polishing stress |
| CN104858281A (en) * | 2015-02-12 | 2015-08-26 | 上海交通大学 | Plate double-side three-point incremental forming device |
| CN104759829A (en) * | 2015-04-22 | 2015-07-08 | 济南职业学院 | Self-adaptive surface treatment device and rolling method |
| CN105478539A (en) * | 2015-12-29 | 2016-04-13 | 哈尔滨工业大学（威海） | Plate multipoint progressive forming device |
| CN208019246U (en) * | 2018-03-28 | 2018-10-30 | 吉林大学 | The adaptive tool heads of multiple spot integrated form for rotating progressive molding |
| CN109877526A (en) * | 2019-02-01 | 2019-06-14 | 浙江工业大学 | Hydraulic-driven pressure stabilizing gear teeth face rolling tool |
| CN110340748A (en) * | 2019-05-30 | 2019-10-18 | 浙江工业大学 | A kind of rotary ultrasonic method processes the method and device of micro- hemisphere cavity plate array |
| CN110102961A (en) * | 2019-06-13 | 2019-08-09 | 山东大学 | The hydraulically adjustable tool heads and method of macro/micro-structure are prepared for progressive molding |
Non-Patent Citations (2)
| Title |
|---|
| 李燕乐 等: "金属板材数控渐进成形工艺的研究进展", 《精密成形工程》 * |
| 贾彬彬 等: "圆柱面多点渐进成形数值模拟研究", 《创新塑性加工技术，推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会学术会议论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876935A (en) * | 2022-04-27 | 2022-08-09 | 中国舰船研究设计中心 | Internal and external balance type hydraulic nut for mounting ship propeller and mounting method thereof |
| CN114876935B (en) * | 2022-04-27 | 2024-04-26 | 中国舰船研究设计中心 | Internal and external balance type hydraulic nut for installing ship propeller and installation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113857767B (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101774051B (en) | Inclined hole electrosparking processing device and method for adjusting position and angle of electrode | |
| US8925198B2 (en) | Method and machining installation for the finishing of a crankshaft bearing bore | |
| CN203509093U (en) | Thin-walled workpiece machining clamp | |
| CN108907046B (en) | Pipe thread machining method, rolling head, equipment, module, production line and product thereof | |
| CN104858689B (en) | A kind of aligning positioning and clamping device and its application method for casing endoporus | |
| CN113857767B (en) | Tool head and method for self-adaptive machining and forming of micro-texture on surface of curved-surface thin-wall part | |
| CN201603930U (en) | Slant hole spark-machining device | |
| EP3308874B1 (en) | Method, module and apparatus for roll-processing external pipe thread, and external pipe thread production line | |
| CN105537885A (en) | Machining method of valve element | |
| CN103586770B (en) | A kind of processing method of the clamp for three lobe ripple bearing external roller paths | |
| CN102528410A (en) | Process for manufacturing base body of engineering thin-walled drill | |
| CN102151920B (en) | Electrical discharge machining (EDM) method of super-hard micro-hemisphere couple part | |
| CN104084759B (en) | A kind of processing technology for working fluid cylinder pressure cylinder barrel blank | |
| CN109128885A (en) | Thin-wall tube-shaped excircle of workpiece turning clamping tooling and clamping method | |
| CN110125439B (en) | Device for thin-wall bushing unstressed clamping finish turning inner hole and using method | |
| CN104057323B (en) | End face drilling tool | |
| CN106424985B (en) | A kind of machining tool and technique of the more roll ways and roll balls nut arc spiral grooves of large pitch | |
| CN212552843U (en) | Fixture for milling crescent groove in compressor cylinder | |
| CN104551793B (en) | Adjustable precision eccentric clamp | |
| CN103920890A (en) | Turning method of welding grooves in both sides of large ball clacks | |
| CN109571155B (en) | Processing jig and method for processing multi-petal claw-shaped workpiece by using same | |
| CN110586825B (en) | Free forging method of step inner hole cylinder forging | |
| CN103341765A (en) | Tool for machining inner arc surface and outer arc surface of workpiece | |
| CN210030822U (en) | Double-row tapered roller bearing ring limit quenching die | |
| CN108237446B (en) | Cylindrical grinding and positioning tool and grinding method for thin-wall conical surface part |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |