CN112091065B - Multi-tool-head flexible incremental forming device and method - Google Patents
Multi-tool-head flexible incremental forming device and method Download PDFInfo
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- CN112091065B CN112091065B CN202010921523.5A CN202010921523A CN112091065B CN 112091065 B CN112091065 B CN 112091065B CN 202010921523 A CN202010921523 A CN 202010921523A CN 112091065 B CN112091065 B CN 112091065B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
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Abstract
The invention provides a multi-tool-head flexible incremental forming device and a multi-tool-head flexible incremental forming method, which relate to the field of incremental forming and comprise three tool handles which are arranged on a protective shell and have coplanar axes, wherein two tool handles positioned on two sides are respectively connected with a side tool head through a crank; the plurality of tool heads are arranged on the protective shell, the whole machine can be arranged on a machine tool main shaft, the problems that multi-point progressive forming cannot be directly realized on a numerical control machine tool and the distance between the plurality of tool heads cannot be adjusted are solved, and the processing efficiency of the progressive forming technology is improved.
Description
Technical Field
The disclosure relates to the field of incremental forming, and in particular relates to a multi-tool-head flexible incremental forming device and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the metal plate processing technology, the incremental forming technology is a flexible processing technology as a novel plate processing technology, a three-dimensional model is dispersed into a series of two-dimensional models along the height direction by utilizing a layered manufacturing method, and the plastic forming of the metal plate is realized layer by controlling the motion of a incremental forming tool head through a numerical control system. The progressive forming technology can better solve the problem of processing complex, precise, small-batch and multi-variety parts.
The inventor finds that the current progressive forming equipment is generally only provided with one main shaft, which seriously limits the improvement of the processing efficiency, although the simultaneous forming (multipoint progressive forming) by adopting a plurality of tool heads is an effective means for improving the processing efficiency. However, most multipoint incremental forming equipment cannot be directly supported by a general numerical control machine tool, and the special processing device and control device of the multipoint incremental forming equipment cause the cost to be expensive; meanwhile, the distance between the tool heads cannot be changed along with the processing requirement when the existing forming tool and the existing forming device are processed, the tool heads or the secondary clamping plates need to be replaced, when the tool heads and the secondary clamping plates are replaced, the coordinate system needs to be calibrated again, the processing efficiency is low, and the performance of the processed plates is reduced when deviation occurs in the multi-time calibration process.
Disclosure of Invention
The purpose of the disclosure is to provide a multi-tool-head flexible incremental forming device and method aiming at the defects in the prior art, a plurality of tool heads are arranged on a protective shell, and the whole multi-tool-head flexible incremental forming device can be arranged on a machine tool spindle, so that the problems that multi-point incremental forming cannot be directly realized on a numerical control machine tool and the distance between the multi-tool heads cannot be adjusted are solved, and the processing efficiency of the incremental forming technology is improved.
The first purpose of the present disclosure is to provide a multi-tool-head flexible incremental forming device, which adopts the following technical scheme:
including installing the handle of a knife of axis coplane three interval arrangement on the protective housing, be located and be connected with side tool head through the crank respectively on two handles of a knife of both sides, tool head in the middle of middle handle of a knife coaxial coupling has, all cooperate on the handle of a knife have drive gear, the drive gear that adjacent handle of a knife corresponds meshes mutually, drive gear drives the handle of a knife around corresponding axis rotation under the effect of first actuating mechanism, maintain side tool head and middle tool head axis coplane to change the interval of two side tool heads.
Furthermore, the tool handles are respectively matched with the protective shell, one end of each tool handle penetrates through the protective shell to be connected with the tool head, the other end of each tool handle is located in the protective shell to be connected with the protective shell in a rotating mode, and the output end of the first driving mechanism is in meshing transmission with the transmission gear on the middle tool handle through the gear.
Furthermore, the protective housing is connected with the protective sheath through rotating the one end that the instrument head was kept away from to the protective housing, and the protective housing drives the instrument head through the rotation for the protective sheath and changes the relative contained angle with the protective sheath.
Furthermore, the protective housing is connected with the protective sleeve through a revolute pair, the rotation axis of the revolute pair, the axis of the protective housing and the axis of the middle cutter handle are collinear, and the second driving mechanism is matched with the transmission pair to drive the protective housing to rotate relative to the protective housing.
Furthermore, crank one end butt joint handle of a knife, other end butt joint side tool head, side tool head axis and the parallel and interval arrangement that is of handle of a knife axis that corresponds, two crank structures that two side tool heads correspond are the same, rotate around the handle of a knife axis under the drive of corresponding handle of a knife respectively and change the interval with middle tool head.
Further, the axes of the side tool heads and the middle tool head are arranged in parallel, and the two side tool heads are symmetrically arranged relative to the axis of the middle tool head.
Furthermore, the transmission gear is matched with a locking mechanism and used for locking the rotation of the tool shank after the distance between the tool heads is adjusted.
A second object of the present disclosure is to provide a flexible incremental forming method using the multi-tool-head flexible incremental forming apparatus as described above, including the steps of:
installing a multi-tool-head flexible incremental forming device on a main shaft of a numerical control machine tool, and processing a plate which is clamped and subjected to coordinate calibration;
driving the tool shank to rotate according to the required processing track to change the distance between the side tool head and the middle tool head and adjust the tool shank to a required state;
the main shaft drives the tool head to move, and the tool head carries out incremental forming processing on the plate.
Further, after the distance between the tool heads is adjusted to meet requirements, the locking mechanism is matched with the first driving mechanism to lock the transmission gear.
Further, when the main shaft drives the tool head to move, the relative position of the tool head and the plate is adjusted, so that the plane where the axis of the tool head is located is perpendicular to the direction of the machining track.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) the multiple tool heads are arranged on the protective shell, and the whole body can be arranged on the main shaft of the machine tool, so that the problems that the multipoint progressive forming cannot be directly realized on a numerical control machine tool and the distance between the multiple tool heads cannot be adjusted are solved, and the processing efficiency of the progressive forming technology is improved;
(2) the crank is operated, the angle of the crank under the rotation of the tool handle is changed, and the relative position of the tool head can be adjusted, so that the crank and the tool head with proper sizes meeting the machining requirements are replaced according to the target machining requirements, the flexible incremental forming tool with adjustable intervals is assembled, crankshafts with different lengths and tool heads with different diameters can be selected according to different machining technical requirements, and the application range of the flexible incremental forming tool with adjustable intervals is expanded;
(3) the protective shell and the protective sleeve are adopted to install and integrate the tool heads, so that the tool heads can be installed on a main shaft of a machine tool as a whole tool, the existing machine tool can be used for incremental forming machining, the three tool heads are operated simultaneously, the same track does not need to be machined repeatedly, and the machining efficiency is improved;
(4) the multi-tool-head spacing adjusting device can adjust the spacing between the tool heads during processing, the spacing adjustment of the tool heads can be completed without secondary disassembly and replacement of the tool heads, the disassembly times are reduced, the accumulated error caused by repeated installation is avoided, and the processing precision and the forming performance of the formed plate are improved;
(5) the tool handle matched with the tool head rotates under the action of the transmission gear, so that the angle deviation caused by the rotation of the crank tool head can be adjusted in time in the machining process, the angle correction in the machining process is convenient and timely, and the machining precision is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a schematic view of the overall structure of a forming apparatus in embodiments 1 and 2 of the present disclosure;
fig. 2 is a schematic view of a matching structure of a handle and a protective shell in embodiments 1 and 2 of the present disclosure;
FIG. 3 is a schematic structural diagram of the engagement between the tool shank and the transmission gear in embodiments 1 and 2 of the present disclosure;
fig. 4 is a schematic diagram illustrating a moving track and an interval adjustment of a tool head in embodiments 1 and 2 of the present disclosure;
fig. 5 is a schematic structural view of an outer protective sheath in embodiments 1 and 2 of the present disclosure;
fig. 6 is a schematic structural diagram of the cooperation of the crank, the tool holder and the tool head in embodiments 1 and 2 of the present disclosure.
In the figure, 1, clamping the end cover; 2. an outer end protective sleeve; 3. a protective sleeve; 4. connecting an end cover; 5. a protective shell; 6. a first crank; 7. a first side tool head; 8. an intermediate tool head; 9. a second side tool head; 10. a second crank; 11. a first handle; 12. a first drive gear; 13. a first drive motor; 14. a first bolt; 15. a first positioning sleeve; 16. a second transmission gear; 17. a second drive motor; 18. a drive bevel gear; 19. the through hole conductive slip ring; 20. a connecting cover; 21. a second positioning sleeve; 22. a third positioning sleeve; 23. a third transmission gear; 24. a second handle; 25. a thrust bearing; 26. and locking the motor.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 disclosure 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 example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.
As introduced in the background art, in the prior art, the distance between the tool heads cannot be changed along with the processing requirements during processing of the forming tool and the forming device, and the tool heads or the secondary clamping of the plate needs to be replaced, and when the tool heads and the secondary clamping of the plate are replaced, the coordinate system needs to be calibrated again, so that the processing efficiency is low; in view of the above problems, the present disclosure provides a multi-tool-head flexible incremental forming apparatus and method.
Example 1
In an exemplary embodiment of the present disclosure, as shown in fig. 1-6, a multi-tool head flexible incremental forming apparatus is provided.
The device mainly comprises a clamping end cover 1, an outer end protective sleeve 2, a protective sleeve 3, a connecting end cover 4 and a protective shell 5 which are connected in sequence, and a support structure is formed by the clamping end cover, the outer end protective sleeve, the connecting end cover and the protective shell;
the protective shell is matched with three tool handles, the axes of the three tool handles are coplanar and are sequentially arranged at intervals, the two tool handles positioned at the two sides are respectively connected with a side tool head through a crank, and the middle tool handle is coaxially connected with a middle tool head 8;
in the present embodiment, the middle tool head 8 and the middle tool shank are of an integral structure, and in other embodiments, in order to meet the requirement of progressive forming in the middle area, the middle tool head may be replaced with a tool head of another structure or specification, so as to meet different machining and forming requirements.
The protective shell and the protective sleeve are adopted to install and integrate the tool heads, so that the tool heads can be installed on a machine tool spindle as a whole tool, progressive forming machining can be performed by utilizing an existing machine tool, the three tool heads are operated simultaneously, the same track does not need to be repeatedly machined for multiple times, and machining efficiency is improved.
The three tool heads are used as the execution tail ends of the whole forming device, transmission gears are matched on the tool handles, the transmission gears corresponding to the adjacent tool handles are meshed, the transmission gears drive the tool handles to rotate around corresponding axes under the action of a first driving mechanism, the axes of the side tool heads and the middle tool head are maintained to be coplanar, and the distance between the two side tool heads is changed;
the output end of the first driving mechanism is in meshing transmission with a transmission gear on the middle tool handle through a gear;
for the crank, one end of the crank is in butt joint with the tool shank, the other end of the crank is in butt joint with the side tool head, the axis of the side tool head is parallel to the axis of the corresponding tool shank and is arranged at intervals, the two cranks corresponding to the two side tool heads are identical in structure, and the two cranks rotate around the axis of the tool shank under the driving of the corresponding tool shanks respectively to change the distance between the two side tool heads and the middle tool head.
Specifically, in the embodiment, two cranks are provided, internal threads are respectively arranged at two ends of each crank, for the first crank 6, one end of each crank is matched with the first side tool head 7 to form threaded connection, the other end of each crank is matched with the first tool handle 11 to form threaded connection, and the first crank, the first side tool head and the first tool handle form a first crank type forming tool head;
similarly, for the second crank 10, one end is matched with the second side tool head 9 to form threaded connection, the other end is matched with the second cutter handle 24 to form threaded connection, and the second crank, the second side tool head and the second cutter handle form a second crank type forming tool head.
It can be understood that the crank structure, which can be arranged as a detachable structure, can select crankshafts with different lengths and tool heads with different diameters according to the actual processing technical requirements, and the application range of the flexible incremental forming tool with adjustable spacing is expanded.
For the specific matching of the tool handles and the protective shell, the first tool handle 11 and the second tool handle 24 are installed on the protective shell 5 by using a bidirectional thrust bearing, and the bidirectional thrust bearing corresponding to the first tool handle realizes axial positioning by using the first positioning sleeve 15; the bidirectional thrust bearing corresponding to the second tool handle realizes axial positioning by using a third positioning sleeve 22; the intermediate tool head 8 is mounted on the protective housing 5 via a two-way thrust bearing 25 and a second positioning sleeve 21.
The first tool holder 11 is connected with a first transmission gear 12 through a flat key, and the first transmission gear 12 realizes axial positioning by utilizing a first positioning sleeve 15 and a shaft shoulder of the first tool holder 11;
the second knife handle 24 is connected with a third transmission gear 23 through a flat key, and the third transmission gear 23 is positioned by utilizing a third positioning sleeve 22 and a shaft shoulder of the second knife handle;
in the implementation, the middle tool head is of a linear structure, and the distance between the middle tool head and other tool heads does not need to be changed by active action, so that the second transmission gear 16 can be arranged on the protective shell and positioned by utilizing a shaft shoulder preset on the protective shell;
the first transmission gear, the second transmission gear and the third transmission gear are meshed in sequence to form a gear transmission mechanism; the transmission gear is matched with a locking mechanism and used for locking the rotation of the tool shank after the distance between the tool heads is adjusted;
the first transmission gear 12, the second transmission gear 16 and the third transmission gear 23 of the gear transmission mechanism are driven by the first driving motor 13 and locked by the locking motor 26, so that the distance adjustment of the multi-tool head is realized.
The protective shell 5 and the connecting end cover 4 are connected through a first bolt, a thread is arranged on a shaft of the connecting end cover 4, and the thread is matched with an internal thread of the connecting cover 20.
One end of the protective shell, which is far away from the tool head, is rotatably connected with a protective sleeve, and the protective shell drives the tool head to change a relative included angle with the protective sleeve through rotation relative to the protective sleeve;
the protective shell is connected with the protective sleeve through the revolute pair, the rotation axis of the revolute pair, the axis of the protective shell, the axis of the protective sleeve and the axis of the middle cutter handle are collinear, and the second driving mechanism is matched with the transmission pair to drive the protective shell to rotate relative to the protective sleeve;
the connecting cover 20 is mounted on the inner diameter of the outer end protective sleeve 2 through a thrust bearing, and can realize relative rotary motion with the outer end protective sleeve 2.
Specifically, the bottom end of the outer end protective sleeve 2 is provided with a bevel gear, the bevel gear and the driving bevel gear 18 form a gear pair, the driving bevel gear 18 is fixedly connected to an output shaft of the second driving motor 17, the second driving motor 17 is fixedly installed on a boss of the connecting end cover 4, and a groove for installing the second driving motor 17 is processed on the boss. The angle adjustment of the forming tool is realized by a bevel gear transmission mechanism formed by the driving bevel gear 18 and a bevel gear at the bottom end of the outer end protective sleeve 2.
Outer end protective sheath 2 is equipped with the screw thread, the screw thread cooperatees with the internal thread of protective sheath 3, guarantees bevel gear drive mechanism's operational environment. The outer end protective sleeve 2 is connected with the clamping end cover 1 through a bolt. Thereby forming a flexible incremental forming tool with adjustable spacing.
As shown in FIG. 4, the axial centers of the gear 12, the gear 16 and the gear 23 are O1、O2、O3The connecting line of the three tool heads is a straight line l, and the projections of the crank 10 and the crank 6 on the top view are O respectively1A and O3B。|AO2I is the distance between the crank tool head 9 and the middle tool head 8, | BO2I is the spacing of the crank tool bit 7 from the middle tool bit 8, the size of which changes with the rotation of the crank 10 and the crank 6. At this time, the angle β of the straight line l is deviated by the forming tool angle adjusting means. The specific expression for the tool tip distance is as follows:
L2＝R2+r2-2Rrcosα
the specific expression of the offset angle of the tool head connecting line l is as follows:
wherein r is the crank length; r is the axial distance between the gear 12 and the gear 16; l is the distance between the crank tool bit and the middle tool bit; α is the rotation angle of the crank; beta is the offset angle of the tool head line l.
The multi-tool-head distance adjusting device and the forming angle adjusting device are simultaneously controlled by a track instruction, and track processing is accurately realized. The trajectory information includes tool head spacing, forming tool angle, and spindle motion trajectory.
Through the operation crank, change the angle of crank under the handle of a knife rotation, can adjust the relative position of instrument head to according to the target processing demand, change the crank and the instrument head of the suitable size that satisfy the processing demand, the flexible forming tool that advances gradually of equipment interval adjustable can select the bent axle of different length and the instrument head of different diameters according to the processing technology requirement of difference, has enlarged the application scope of the flexible forming tool that advances gradually of interval adjustable.
For the circuit arrangement of a first driving motor corresponding to the first driving mechanism and a second driving motor corresponding to the second driving mechanism, power supply is obtained through the conductive slip ring;
specifically, the outer ring of the via hole conductive slip ring 19 is connected with the inner diameter of the outer end protective sleeve 2 by interference fit, and the inner ring of the via hole conductive slip ring 19 is fixed on the shaft connected with the end cover 4. The outer end protective sleeve 2 and the clamping end cover 1 are provided with through holes, and control current leads connected with the through hole conductive slip ring 19 are connected from the through holes. The first output lead of the via slip ring 19 delivers the control current to the second drive motor 17. The connecting end cover 4 is provided with a through hole, and a second output lead of the via hole conductive slip ring 19 transmits control current to the first driving motor 13 through the through hole.
The plurality of tool heads are arranged on the protective shell, the whole machine can be arranged on a machine tool main shaft, the problems that multi-point progressive forming cannot be directly realized on a numerical control machine tool and the distance between the plurality of tool heads cannot be adjusted are solved, and the processing efficiency of the progressive forming technology is improved.
Example 2
In another exemplary embodiment of the present disclosure, as shown in fig. 1-6, a flexible incremental forming method is provided.
Using a multi-tool head flexible incremental forming apparatus as described in example 1;
installing a multi-tool-head flexible incremental forming device on a main shaft of a numerical control machine tool, and processing a plate which is clamped and subjected to coordinate calibration;
driving the tool shank to rotate according to the required processing track to change the distance between the side tool head and the middle tool head and adjust the tool shank to a required state; after the distance between the tool heads is adjusted to meet the requirement, the transmission gear is locked by utilizing the locking mechanism to be matched with the first driving mechanism;
the main shaft drives the tool head to move, and the relative position of the tool head and the plate is adjusted while the main shaft drives the tool head to move, so that the plane where the axis of the tool head is located is perpendicular to the direction of the processing track; the tool head carries out progressive forming processing on the plate.
The tool handle matched with the tool head rotates under the action of the transmission gear, so that the angle deviation caused by the rotation of the crank tool head can be adjusted in time in the machining process, the angle correction in the machining process is convenient and timely, and the machining precision is improved.
Specifically, the processing method is described in detail below with reference to the accompanying drawings:
1) selecting a crank and a tool head with proper sizes according to a design drawing and processing requirements of a target part, and assembling a flexible incremental forming tool with adjustable spacing;
2) generating a processing track and a processing program through programming according to the processing requirements;
3) installing the assembled flexible incremental forming tool with adjustable space on a main shaft of a numerical control machine tool through a tool shank;
4) clamping the plate on a machine tool, and calibrating coordinates;
5) controlling a flexible incremental forming tool to start to process the plate by the machine tool according to the processing program;
6) after the distance between the tool heads is automatically adjusted by the tool head distance adjusting device, the gear transmission mechanism is locked by starting the locking motor and the first driving motor;
7) controlling a second driving motor to drive a bevel gear, and adjusting the integral angle of the flexible incremental forming tool with adjustable space according to a machining program to enable a connecting line of the tool head to be perpendicular to the machining track direction;
8) and after the machining is finished, taking down the plate and the incremental forming tool.
The multi-tool-head spacing adjusting device can adjust the spacing between the tool heads during machining, the spacing adjustment of the tool heads can be completed without secondary disassembly and replacement of the tool heads, the disassembly times are reduced, accumulated errors caused by repeated installation are avoided, and the machining precision and the forming performance of a formed plate are improved.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (9)
1. The utility model provides a flexible shaper that advances gradually of multiplex tool head, a serial communication port, including installing the handle of a knife of the coplanar three interval arrangement of axis on the protective housing, be located two handles of a knife of both sides and be connected with side tool head through the crank respectively, tool head in the middle of middle handle of a knife coaxial coupling has, all cooperate with drive gear on the handle of a knife, the drive gear that adjacent handle of a knife corresponds meshes mutually, drive gear drives the handle of a knife around corresponding axis rotation under a drive mechanism effect, maintain side tool head and middle tool head axis coplane, and change the interval of two side tool heads.
2. The multi-tool-head flexible incremental forming device of claim 1, wherein the tool shanks are respectively matched with the protective shell, one end of each tool shank penetrates through the protective shell to be connected with the tool head, the other end of each tool shank is positioned in the protective shell to be rotatably connected with the protective shell, and the output end of the first driving mechanism is in meshing transmission with the transmission gear on the middle tool shank through a gear.
3. The multi-tool-head flexible incremental forming device of claim 1, wherein a protective sleeve is rotatably connected to one end of the protective shell away from the tool head, and the protective shell drives the tool head to change a relative included angle with the protective sleeve through rotation relative to the protective sleeve; the relative included angle refers to an offset angle of a connecting line of the tool head, namely a rotation angle of the protective sleeve relative to the protective shell;
the protective housing is connected with the protective sleeve through the revolute pair, the rotation axis of the revolute pair, the axis of the protective housing and the axis of the middle cutter handle are collinear, and the second driving mechanism is matched with the transmission pair to drive the protective housing to rotate relative to the protective housing.
4. The multi-tool-head flexible incremental forming device of claim 1, wherein one end of the crank is connected with the tool shank, the other end of the crank is connected with the side tool head, the axes of the side tool heads are parallel to the corresponding axes of the tool shank and are arranged at intervals, the two cranks corresponding to the two side tool heads have the same structure, and the two side tool heads rotate around the axes of the tool shanks respectively under the driving of the corresponding tool shanks to change the distance between the two side tool heads and the middle tool head.
5. The multi-tool-head flexible incremental forming apparatus of claim 4, wherein the axes of the side tool heads and the middle tool head are arranged in parallel, and the two side tool heads are arranged symmetrically with respect to the axis of the middle tool head.
6. The multi-tool-head flexible incremental forming apparatus of claim 1, wherein the transmission gear is coupled with a locking mechanism for locking the tool shanks after the tool-head pitch is adjusted.
7. A flexible incremental forming method using the multi-tool-head flexible incremental forming apparatus according to any one of claims 1 to 6, comprising the steps of:
installing a multi-tool-head flexible incremental forming device on a main shaft of a numerical control machine tool, and processing a clamped plate subjected to coordinate calibration;
driving the tool shank to rotate according to the required processing track to change the distance between the side tool head and the middle tool head and adjust the tool shank to a required state;
the main shaft drives the tool head to move, and the tool head carries out incremental forming processing on the plate.
8. The flexible incremental forming method according to claim 7, wherein the transmission gear is locked by using the locking mechanism in cooperation with the first drive mechanism after the pitch of the tool bits is adjusted to meet the requirement.
9. The flexible incremental forming method according to claim 7, wherein the relative position of the tool head and the sheet material is adjusted while the spindle moves the tool head so that a line connecting the tool head is perpendicular to the direction of the processing path.
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