CN112705804B - Electric machining method for large-taper workpiece - Google Patents
Electric machining method for large-taper workpiece Download PDFInfo
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- CN112705804B CN112705804B CN202011310765.7A CN202011310765A CN112705804B CN 112705804 B CN112705804 B CN 112705804B CN 202011310765 A CN202011310765 A CN 202011310765A CN 112705804 B CN112705804 B CN 112705804B
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- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The invention discloses an electric machining method of a large-taper workpiece, which comprises the steps of firstly installing a workpiece clamp on a numerical control wire cut electrical discharge machine, and then driving a rocking plate to rotate, so that the workpiece to be machined is inclined until an included angle formed by the central axis of the workpiece and a wire electrode is equal to the angle of a conical surface to be machined; driving the wire electrode to horizontally move to a workpiece, controlling the wire electrode to start discharging, cutting into a preset position of the workpiece from outside to inside, and then controlling the wire electrode to stop moving; the workpiece autorotation driving mechanism drives the workpiece to autorotate for 360 degrees to obtain a finished product; the machining method has the advantages that the machining method can realize the machining of the outer surfaces or inner holes of various large taper angles of the workpieces and the machining of different combined shapes of the workpieces by controlling the rotation of the rocking plate, the autorotation of the workpieces and the horizontal movement of the machine tool, and the machining shapes of the workpieces are flexible and changeable and the machining is simple; the workpiece fixture can realize stepless adjustment of the conical angle of the workpiece conical surface; the whole workpiece clamp is simple and compact in structure and small in size.
Description
Technical Field
The invention relates to the field of conical surface machining of workpieces, in particular to an electric machining method for a large-taper workpiece.
Background
In the field of mechanical manufacture, the need to taper a workpiece is often encountered, such as: while the taper surface of a workpiece is generally machined by a lathe, a milling machine, or the like at present, the taper surface cannot be machined by a lathe or the like for a workpiece having a high material hardness. While the wire electric discharge machine can machine a workpiece with high hardness, the wire electric discharge machine is limited by the functional structure of the wire electric discharge machine, and therefore, the machining of a tapered surface with a large taper angle (for example, 30 °) on the workpiece is difficult.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electric machining method for a large-taper workpiece, which realizes the machining of a large-taper outer conical surface or an inner conical hole of the workpiece by installing a workpiece clamp with a special structure on a numerical control wire-cut electric discharge machine.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electric machining method for a large-taper workpiece comprises the following specific steps:
(1) firstly, mounting a workpiece clamp on a numerical control wire cut electrical discharge machine, wherein the workpiece clamp comprises a bottom plate and a rocking plate, the bottom plate is horizontally fixed on the machine, the bottom plate is provided with a rocking plate driving mechanism for driving the rocking plate to rotate, the rocking plate is provided with a workpiece clamping mechanism and a workpiece autorotation driving mechanism, when the rocking plate rotates, a workpiece to be machined fixedly mounted on the workpiece clamping mechanism inclines, and when the rocking plate is in a horizontal state, a vertical line between a central axis of the workpiece and a wire electrode on the machine is vertical to a rotating axis of the rocking plate;
(2) the rocking plate is driven to rotate, so that the workpiece to be machined is inclined until an included angle formed by the central axis of the workpiece and the wire electrode is equal to the angle of the conical surface to be machined, and the wire electrode and the central axis of the workpiece are positioned on the same plane;
(3) driving the wire electrode to horizontally move to a workpiece to be machined, then controlling the wire electrode to start discharging, cutting into a preset position of the workpiece from outside to inside, and then controlling the wire electrode to stop moving;
(4) and processing a finished product with an external conical surface, wherein the finished product is divided into the following two types:
a. the wire electrode continues to discharge, and the workpiece autorotation driving mechanism drives the workpiece to slowly autorotate for 360 degrees to obtain a round table finished product or a cone finished product with the outer surface being a large cone-shaped conical surface;
b. or the wire electrode continues to discharge, the numerical control wire cut electrical discharge machine drives the whole workpiece fixture to horizontally move for a set distance to complete the machining of the first conical surface on the outer surface of the workpiece, the wire electrode is horizontally moved to the outside of the workpiece, then the workpiece rotation driving mechanism drives the workpiece to rotate for a set angle, the wire electrode is controlled to horizontally move inwards from the outside of the workpiece to the butt joint of the previous conical surface, then the workpiece fixture is driven to horizontally move for a set distance to complete the machining of the second conical surface on the outer surface of the workpiece, and the operation is repeated for multiple times until the machining of all the conical surfaces on the outer surface of the workpiece is completed, so that a pyramid finished product or a prismatic table finished product with a large-cone-pyramid outer surface is obtained.
An electric machining method for a large-taper workpiece comprises the following specific steps:
(1) firstly, mounting a workpiece clamp on a numerical control wire cut electrical discharge machine, wherein the workpiece clamp comprises a bottom plate and a rocking plate, the bottom plate is horizontally fixed on a machine tool guide rail, the bottom plate is provided with a rocking plate driving mechanism for driving the rocking plate to rotate, the rocking plate is provided with a workpiece clamping mechanism and a workpiece autorotation driving mechanism, when the rocking plate rotates, a workpiece to be machined fixedly mounted on the workpiece clamping mechanism inclines, and when the rocking plate is in a horizontal state, a vertical line between a central axis of the workpiece and a wire electrode on the machine tool is vertical to a rotating axis of the rocking plate;
(2) drilling an auxiliary processing hole in the workpiece, wherein the included angle formed by the central axis of the auxiliary processing hole and the central axis of the workpiece is equal to the angle of the conical surface to be processed;
(3) the rocking plate is driven to rotate, so that a workpiece to be machined is inclined until an included angle formed by the central axis of the workpiece and the wire electrode is equal to the angle of a conical surface to be machined, the wire electrode and the central axis of the workpiece are positioned on the same plane, and the central axis of the machining auxiliary hole is parallel to the wire electrode at the moment;
(4) taking off one end of the wire electrode from the machine tool, driving the wire electrode to move to the position of a machining auxiliary hole in the workpiece, then enabling the taken-off end of the wire electrode to penetrate through the machining auxiliary hole and be fixed at the original position of the machine tool, and controlling the wire electrode not to be in contact with the inner wall of the machining auxiliary hole, namely, enabling a discharge gap to exist between the wire electrode and the workpiece;
(5) and processing a finished product with an inner taper hole, wherein the two types are as follows:
a. controlling the line electrode to start discharging, and driving the workpiece to slowly rotate 360 degrees by a workpiece rotation driving mechanism to obtain a finished product with an inner hole being a large-cone-angle conical hole or a circular truncated cone hole;
b. or controlling the wire electrode to start discharging, driving the whole workpiece clamp to horizontally move for a set distance by the numerical control wire cut electrical discharge machine tool to complete machining of a first conical surface of an inner hole of the workpiece, horizontally moving the wire electrode into the workpiece, then driving the workpiece to rotate for a set angle by the workpiece autorotation driving mechanism, then controlling the wire electrode to horizontally move outwards from the inside of the workpiece to the butt joint of the previous conical surface, then driving the workpiece clamp to horizontally move for a set distance to complete machining of a second conical surface of the inner hole of the workpiece, and repeating the operation for multiple times until machining of all conical surfaces of the inner hole of the workpiece is completed to obtain a finished product of which the inner hole is a large-cone-angle pyramid hole or a frustum hole.
Furthermore, the rocking plate driving mechanism comprises a first speed reduction stepping motor, the first speed reduction stepping motor is horizontally fixed on the bottom plate, and an output shaft of the first speed reduction stepping motor is fixed with the rocking plate to drive the rocking plate to rotate around a horizontal axis.
Furthermore, the workpiece clamping mechanism comprises a hollow gear and a bearing bush, the bearing bush is sleeved on the hollow gear, a positioning convex ring is integrally arranged on the outer circumferential surface of the hollow gear, a positioning groove is arranged on the inner surface of the bearing bush, the positioning convex ring is matched with the positioning groove, so that the hollow gear and the bearing bush are axially positioned but can relatively rotate, the bearing bush is fixed on the rocking plate, the hollow gear is provided with a workpiece fixing mechanism, and the rocking plate, the bearing bush and the hollow gear are provided with slots, so that the wire electrode can enter the hollow gear through the slots.
Furthermore, the workpiece fixing mechanism comprises at least two positioning bolts which are uniformly distributed along the circumferential direction of the hollow gear, the positioning bolts are in threaded connection with the hollow gear in the radial direction and extend into the hollow gear, the inner ends of the positioning bolts are rotatably connected with elastic positioning blocks, and the inner surfaces of the elastic positioning blocks are arc-shaped surfaces.
Furthermore, the workpiece autorotation driving mechanism comprises a second speed reduction stepping motor and a transmission gear, the second speed reduction stepping motor is vertically fixed on the rocking plate, the transmission gear is coaxially and fixedly connected with an output shaft of the second speed reduction stepping motor, and the transmission gear is meshed with the hollow gear.
Compared with the prior art, the machining method has the advantages that the workpiece clamp with a special structure is arranged on the wire cut electric discharge machine, and the machining of the outer surface or the inner hole of various large taper angles of the workpiece can be realized by controlling the rotation of the rocking plate, the rotation of the workpiece and the horizontal movement of the machine tool, such as: cones, truncated pyramids, and the like; the processing of different combined shapes of the workpieces can be realized, the processing shapes of the workpieces are flexible and changeable, and the processing is simple; the workpiece fixture can realize stepless adjustment of the conical angle of the workpiece conical surface; in addition, the workpiece clamp is arranged on the machine tool without changing the structure of the machine tool, is convenient to disassemble, assemble, maintain and replace, is easy to be matched with an electric spark wire cutting machine tool or an electric spark forming machine tool for use, and has simple and compact structure and small volume.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a partial side view of the rocker paddle drive mechanism of the present invention;
FIG. 3 is a schematic view of the workpiece clamping mechanism and the workpiece rotation driving mechanism according to the present invention;
FIG. 4 is a schematic structural view of a workpiece clamping mechanism according to the present invention;
FIG. 5 is a schematic view of a processing state according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a workpiece obtained in step 1 according to a second embodiment of the present invention;
fig. 7 is a schematic view of a processing state according to a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-4, before the electric machining of a large-taper workpiece, a workpiece fixture is installed on a numerical control wire cut electric discharge machine, the workpiece fixture comprises a bottom plate 1 and a rocking plate 2, the bottom plate 1 is horizontally fixed on a machine (not shown in the figures), the bottom plate 1 is provided with a rocking plate driving mechanism for driving the rocking plate 2 to rotate, the rocking plate driving mechanism comprises a first speed reduction stepping motor 3 and a transmission shaft 4, the first speed reduction stepping motor 3 is horizontally fixed on the bottom plate 1, an output shaft of the first speed reduction stepping motor 3 is coaxially and fixedly connected with the transmission shaft 4, the transmission shaft 4 is fixed with the rocking plate 2 so as to drive the rocking plate 2 to rotate around a horizontal axis, the rocking plate 2 is provided with a workpiece clamping mechanism and a workpiece autorotation driving mechanism, the workpiece clamping mechanism comprises a hollow gear 5 and a bearing bush 6, the bearing bush 6 is sleeved on the hollow gear 5, and a positioning convex ring 51 is integrally arranged on the outer circumferential surface of the hollow gear 5, the inner surface of the bearing bush 6 is provided with a positioning groove (not marked in the figure), the positioning convex ring 51 is matched with the positioning groove, the hollow gear 5 and the bearing bush 6 are axially positioned but can relatively rotate, the bearing bush 6 is fixed on the rocking plate 2, a workpiece fixing mechanism is arranged on the hollow gear 5 and comprises a plurality of positioning bolts 52 which are uniformly distributed along the circumferential direction of the hollow gear 5, the positioning bolts 52 are in threaded connection with the hollow gear 5 in the radial direction and extend into the hollow gear 5, the inner end of each positioning bolt 52 is rotatably connected with an elastic positioning block 53, the inner surface of each elastic positioning block 53 is an arc-shaped surface, and the rocking plate 2, the bearing bush 6 and the hollow gear 5 are provided with a slot 54, so that a wire electrode 7 on a wire cutting machine tool can enter the hollow gear 5 through the slot 54, when the rocking plate 2 rotates, a workpiece 8 to be processed fixedly arranged on the workpiece clamping mechanism inclines;
the workpiece autorotation driving mechanism comprises a second speed reduction stepping motor 9 and a transmission gear 10, the second speed reduction stepping motor 9 is vertically fixed on the rocking plate 2, the transmission gear 10 is coaxially and fixedly connected with an output shaft of the second speed reduction stepping motor 9, the transmission gear 10 is meshed with the hollow gear 5, and when the rocking plate 2 is in a horizontal state, a vertical line between the central axis of the workpiece 8 and the wire electrode 7 on the machine tool is vertical to the rotation axis of the rocking plate 2.
The first embodiment is as follows: as shown in fig. 5, the method for electromachining a workpiece with a large taper angle cone on the outer surface comprises the following steps:
(1) placing the workpiece 8 to be processed into the hollow gear 5, and rotating the positioning bolt 52 to enable the elastic positioning block 53 to tightly abut against the workpiece 8 to be processed, so that the workpiece 8 to be processed is fixed in the hollow gear 5;
(2) controlling the first speed-reducing stepping motor 3 to work, driving the rocking plate 2 to rotate, and enabling the workpiece 8 to be machined to incline until an included angle alpha formed by the central axis of the workpiece 8 and the wire electrode 7 is equal to the angle of a conical surface to be machined, and the central axes of the wire electrode 7 and the workpiece 8 are in the same plane;
(3) driving the wire electrode 7 to move horizontally and enter the hollow gear 5 through the slot 54, then controlling the wire electrode 7 to start discharging, cutting into a preset position of the workpiece 8 from outside to inside, and then controlling the wire electrode 7 to stop moving;
(4) and processing a finished product with an external conical surface, which specifically comprises the following steps:
and continuously discharging the wire electrode 7, controlling a second speed reduction stepping motor 9 to work, and driving the hollow gear 5 to rotate through a transmission gear 10 to enable the workpiece 8 to be machined to slowly rotate for 360 degrees to obtain a circular truncated cone finished product or a conical finished product with a large conical pyramid surface on the outer surface.
In the first embodiment, when the outer conical surface is processed in the step (4), the outer conical surface can be further processed into a pyramid or a frustum of a pyramid by the following method:
and controlling the wire electrode 7 to continue discharging, driving the whole workpiece fixture to horizontally move for a set distance by the numerical control wire cut electrical discharge machining machine tool to complete machining of a first conical surface on the outer surface of the workpiece 8, horizontally moving the wire electrode 7 to the outside of the workpiece 8, then driving the hollow gear 5 to rotate through the transmission gear 10 to enable the workpiece 8 to rotate for a set angle, controlling the wire electrode 7 to horizontally move inwards from the outside of the workpiece 8 to the butt joint of the previous conical surface, driving the workpiece fixture to horizontally move for a set distance, completing machining of a second conical surface on the outer surface of the workpiece 8, and repeating the operation for multiple times until machining of all conical surfaces on the outer surface of the workpiece 8 is completed to obtain a finished product pyramid or a finished product frustum pyramid with a large conical surface on the outer surface.
Example two: as shown in fig. 6-7, the method for electromachining the inner hole of the large conical surface of the workpiece comprises the following specific steps:
(1) drilling an auxiliary processing hole 81 in the workpiece 8 to be processed, wherein the included angle formed by the central axis of the auxiliary processing hole 81 and the central axis of the workpiece 8 is equal to the angle of the conical surface to be processed;
(2) placing the workpiece 8 to be processed into the hollow gear 5, and rotating the positioning bolt 52 to enable the elastic positioning block 53 to tightly abut against the workpiece 8 to be processed, so that the workpiece 8 to be processed is fixed in the hollow gear 5;
(3) controlling the first speed-reducing stepping motor 3 to work, driving the rocking plate 2 to rotate, and enabling the workpiece 8 to be machined to incline until an included angle beta formed by the central axis of the workpiece 8 and the wire electrode 7 is equal to the angle of a conical surface to be machined, the wire electrode 7 and the central axis of the workpiece 8 are in the same plane, and the central axis of the machining auxiliary hole 81 is parallel to the wire electrode 7 at the moment;
(4) removing one end of the wire electrode 7 from the machine tool, driving the wire electrode 7 to move to the position of a machining auxiliary hole 81 in the workpiece 8, then penetrating the removed end of the wire electrode 7 through the machining auxiliary hole 81 and fixing the removed end of the wire electrode at the original position of the machine tool, and controlling the wire electrode 7 not to be in contact with the inner wall of the machining auxiliary hole 81, namely, a discharge gap exists between the wire electrode 7 and the workpiece 8;
(5) and processing a finished product with an inner taper hole, which specifically comprises the following steps:
and controlling the wire electrode 7 to start discharging, simultaneously controlling a second speed reduction stepping motor 9 to work, and driving the hollow gear 5 to rotate through a transmission gear 10, so that the workpiece 8 to be machined slowly rotates 360 degrees, and a finished product with an inner hole being a large-taper-angle conical hole or a circular truncated cone hole is obtained.
In the second embodiment, when the inner taper hole is processed in the step (5), the inner taper hole may be further processed into a pyramid hole or a frustum of pyramid hole by the following method, specifically:
the control wire electrode 7 starts to discharge, the numerical control wire cut electrical discharge machine drives the whole workpiece fixture to horizontally move for a set distance to complete the machining of the first conical surface of the inner hole of the workpiece 8, the control wire electrode 7 horizontally moves into the workpiece 8, then the second speed reduction stepping motor 9 works, the hollow gear 5 is driven to rotate through the transmission gear 10 to enable the workpiece 8 to rotate for a set angle, the control wire electrode 7 horizontally moves outwards from the inside of the workpiece 8 to the butt joint position of the previous conical surface, the workpiece fixture is driven to horizontally move for a set distance to complete the machining of the second conical surface of the inner hole of the workpiece 8, and the operation is repeated for multiple times until the machining of all the conical surfaces of the inner hole of the workpiece 8 is completed, so that a finished product with the inner hole being a large-cone-angle pyramid hole or a frustum hole is obtained.
The scope of the present invention includes, but is not limited to, the above embodiments, and the scope of the present invention is defined by the appended claims, and any substitutions, modifications, and improvements that may occur to those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. An electric machining method for a large-taper workpiece comprises the following specific steps:
(1) firstly, mounting a workpiece clamp on a numerical control wire cut electrical discharge machine, wherein the workpiece clamp comprises a bottom plate and a rocking plate, the bottom plate is horizontally fixed on the machine, the bottom plate is provided with a rocking plate driving mechanism for driving the rocking plate to rotate, the rocking plate is provided with a workpiece clamping mechanism and a workpiece autorotation driving mechanism, when the rocking plate rotates, a workpiece to be machined fixedly mounted on the workpiece clamping mechanism inclines, and when the rocking plate is in a horizontal state, a vertical line between a central axis of the workpiece and a wire electrode on the machine is vertical to a rotating axis of the rocking plate;
(2) the rocking plate is driven to rotate, so that a workpiece to be machined is inclined until an included angle formed by the central axis of the workpiece and the wire electrode is equal to the angle of a conical surface to be machined, and the wire electrode and the central axis of the workpiece are positioned on the same plane;
(3) driving the wire electrode to horizontally move to a workpiece to be machined, then controlling the wire electrode to start discharging, cutting into a preset position of the workpiece from outside to inside, and then controlling the wire electrode to stop moving;
(4) and processing a finished product with an external conical surface, wherein the finished product is divided into the following two types:
a. the wire electrode continues to discharge, and the workpiece autorotation driving mechanism drives the workpiece to slowly autorotate for 360 degrees to obtain a round table finished product or a cone finished product with the outer surface being a large cone-shaped conical surface;
b. or the wire electrode continues to discharge, the numerical control wire cut electrical discharge machine drives the whole workpiece fixture to horizontally move for a set distance to complete the machining of the first conical surface on the outer surface of the workpiece, the wire electrode is horizontally moved to the outside of the workpiece, then the workpiece rotation driving mechanism drives the workpiece to rotate for a set angle, the wire electrode is controlled to horizontally move inwards from the outside of the workpiece to the butt joint of the previous conical surface, then the workpiece fixture is driven to horizontally move for a set distance to complete the machining of the second conical surface on the outer surface of the workpiece, and the operation is repeated for multiple times until the machining of all the conical surfaces on the outer surface of the workpiece is completed, so that a pyramid finished product or a prismatic table finished product with a large conical surface on the outer surface is obtained;
the method is characterized in that: the workpiece clamping mechanism comprises a hollow gear and a bearing bush, the bearing bush is sleeved on the hollow gear, a positioning convex ring is integrally arranged on the outer circumferential surface of the hollow gear, a positioning groove is formed in the inner surface of the bearing bush, the positioning convex ring is matched with the positioning groove, so that the hollow gear and the bearing bush are axially positioned and can rotate relatively, the bearing bush is fixed on the rocking plate, a workpiece fixing mechanism is arranged on the hollow gear, and the rocking plate, the bearing bush and the hollow gear are provided with a slot, so that the wire electrode can enter the hollow gear through the slot.
2. An electric machining method for a large-taper workpiece comprises the following specific steps:
(1) firstly, mounting a workpiece clamp on a numerical control wire cut electrical discharge machine, wherein the workpiece clamp comprises a bottom plate and a rocking plate, the bottom plate is horizontally fixed on a machine tool guide rail, the bottom plate is provided with a rocking plate driving mechanism for driving the rocking plate to rotate, the rocking plate is provided with a workpiece clamping mechanism and a workpiece autorotation driving mechanism, when the rocking plate rotates, a workpiece to be machined fixedly mounted on the workpiece clamping mechanism inclines, and when the rocking plate is in a horizontal state, a vertical line between a central axis of the workpiece and a wire electrode on the machine tool is vertical to a rotating axis of the rocking plate;
(2) drilling a processing auxiliary hole in the workpiece, wherein the included angle formed by the central axis of the processing auxiliary hole and the central axis of the workpiece is equal to the angle of the conical surface to be processed;
(3) the rocking plate is driven to rotate, so that a workpiece to be machined is inclined until an included angle formed by the central axis of the workpiece and the wire electrode is equal to the angle of a conical surface to be machined, the wire electrode and the central axis of the workpiece are positioned on the same plane, and the central axis of the machining auxiliary hole is parallel to the wire electrode at the moment;
(4) one end of the wire electrode is taken off from the machine tool, the wire electrode is driven to move to the position of a machining auxiliary hole in a workpiece, then the taken off end of the wire electrode penetrates through the machining auxiliary hole and is fixed at the original position of the machine tool, the wire electrode is controlled not to be in contact with the inner wall of the machining auxiliary hole, and a discharge gap exists between the wire electrode and the workpiece;
(5) and processing a finished product with an inner taper hole, wherein the finished product is divided into the following two types:
a. controlling the line electrode to start discharging, and driving the workpiece to slowly rotate 360 degrees by a workpiece rotation driving mechanism to obtain a finished product with an inner hole being a large-cone-angle conical hole or a circular truncated cone hole;
b. or controlling the wire electrode to start discharging, driving the whole workpiece clamp to horizontally move for a set distance by the numerical control wire cut electrical discharge machine tool to complete machining of a first conical surface of an inner hole of the workpiece, horizontally moving the wire electrode to the inside of the workpiece, then driving the workpiece to rotate for a set angle by the workpiece autorotation driving mechanism, then controlling the wire electrode to horizontally move outwards from the inside of the workpiece to the butt joint of the previous conical surface, then driving the workpiece clamp to horizontally move for a set distance to complete machining of a second conical surface of the inner hole of the workpiece, and repeating the operation for multiple times until machining of all conical surfaces of the inner hole of the workpiece is completed to obtain a finished product of which the inner hole is a large-cone-angle pyramid hole or a frustum hole;
the method is characterized in that: the workpiece clamping mechanism comprises a hollow gear and a bearing bush, the bearing bush is sleeved on the hollow gear, a positioning convex ring is integrally arranged on the outer circumferential surface of the hollow gear, a positioning groove is formed in the inner surface of the bearing bush, the positioning convex ring is matched with the positioning groove, so that the hollow gear and the bearing bush are axially positioned and can rotate relatively, the bearing bush is fixed on the rocking plate, a workpiece fixing mechanism is arranged on the hollow gear, and the rocking plate, the bearing bush and the hollow gear are provided with a slot, so that the wire electrode can enter the hollow gear through the slot.
3. An electromachining method of a large taper work piece as claimed in claim 1 or 2, characterized in that: the rocking plate driving mechanism comprises a first speed reduction stepping motor, the first speed reduction stepping motor is horizontally fixed on the bottom plate, and an output shaft of the first speed reduction stepping motor is fixed with the rocking plate to drive the rocking plate to rotate around a horizontal axis.
4. An electromachining method for a large taper work piece as claimed in claim 1 or 2, characterized in that: the workpiece fixing mechanism comprises at least two positioning bolts which are uniformly distributed along the circumferential direction of the hollow gear, the positioning bolts are in threaded connection with the hollow gear in the radial direction and extend into the hollow gear, the inner ends of the positioning bolts are rotatably connected with elastic positioning blocks, and the inner surfaces of the elastic positioning blocks are arc-shaped surfaces.
5. An electromachining method for a large taper work piece as claimed in claim 1 or 2, characterized in that: the workpiece autorotation driving mechanism comprises a second speed reduction stepping motor and a transmission gear, the second speed reduction stepping motor is vertically fixed on the rocking plate, the transmission gear is coaxially and fixedly connected with an output shaft of the second speed reduction stepping motor, and the transmission gear is meshed with the hollow gear.
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| CN202011310765.7A CN112705804B (en) | 2020-11-20 | 2020-11-20 | Electric machining method for large-taper workpiece |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201338194Y (en) * | 2008-10-31 | 2009-11-04 | 佳木斯大学 | Numerical control turn table for turn-over type automatic indexing |
| JP2010131689A (en) * | 2008-12-03 | 2010-06-17 | Elenix Inc | Method of machining tapered hole by slot electrical discharge machine and slot electrical discharge machine used for the same |
| CN104607736A (en) * | 2014-12-22 | 2015-05-13 | 中核(天津)科技发展有限公司 | Method and rig for wire-electrode cutting of thin-walled tube pyramid |
| CN204843183U (en) * | 2015-07-07 | 2015-12-09 | 佳木斯大学 | Complicated curved surface wire -electrode cutting diaxon numerical control revolving platform |
| CN106392219A (en) * | 2016-11-22 | 2017-02-15 | 哈尔滨理工大学 | Reciprocating wire-electric discharge machining tool |
| CN110625209A (en) * | 2019-09-24 | 2019-12-31 | 遵义群建塑胶制品有限公司 | Large-taper machining auxiliary device for linear cutting machine tool die |
-
2020
- 2020-11-20 CN CN202011310765.7A patent/CN112705804B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201338194Y (en) * | 2008-10-31 | 2009-11-04 | 佳木斯大学 | Numerical control turn table for turn-over type automatic indexing |
| JP2010131689A (en) * | 2008-12-03 | 2010-06-17 | Elenix Inc | Method of machining tapered hole by slot electrical discharge machine and slot electrical discharge machine used for the same |
| CN104607736A (en) * | 2014-12-22 | 2015-05-13 | 中核(天津)科技发展有限公司 | Method and rig for wire-electrode cutting of thin-walled tube pyramid |
| CN204843183U (en) * | 2015-07-07 | 2015-12-09 | 佳木斯大学 | Complicated curved surface wire -electrode cutting diaxon numerical control revolving platform |
| CN106392219A (en) * | 2016-11-22 | 2017-02-15 | 哈尔滨理工大学 | Reciprocating wire-electric discharge machining tool |
| CN110625209A (en) * | 2019-09-24 | 2019-12-31 | 遵义群建塑胶制品有限公司 | Large-taper machining auxiliary device for linear cutting machine tool die |
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