CN211570773U - Plasma double-wire-feeding control device in 3D printing - Google Patents
Plasma double-wire-feeding control device in 3D printing Download PDFInfo
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- CN211570773U CN211570773U CN201922146918.8U CN201922146918U CN211570773U CN 211570773 U CN211570773 U CN 211570773U CN 201922146918 U CN201922146918 U CN 201922146918U CN 211570773 U CN211570773 U CN 211570773U
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Abstract
The utility model discloses a plasma double wire feeding control device in 3D printing, which comprises a wire feeder, a plasma gun and wire feeding guns arranged on two sides of the plasma gun, wherein the plasma gun is connected with a plasma power supply; the positive and negative limit sensors and the zero position sensor of the rotating motor are connected with a computer through leads and used for determining the motion range of the rotating motor. The utility model also discloses a control method of two wire feed controlling means of plasma in 3D prints. The utility model discloses a plasma double wire feeding control device in 3D printing, which can automatically adjust the wire feeding angle while feeding wires in double ways; the wire feeding path can be automatically corrected in the 3D printing process, and the working efficiency of the equipment is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of quick plasma melting deposition, a two wire feed controlling means of plasma in 3D printing is related to.
Background
The Rapid Plasma Deposition (RPD) technique is a technique that Plasma arcs are used as energy sources to form a stable molten pool on a substrate, and simultaneously, metal wires fed into the molten pool are melted to be deposited, solidified and formed. Plasma arcs, electron beams, and lasers are high-energy beams, but plasma arcs are lower in cost than electron beams and lasers, have higher energy density than free-state arcs, and have better rigidity, and therefore, in recent years, plasma arcs have been used by various research institutions and enterprises for low-cost and rapid manufacturing of metal members. However, the plasma arc fused deposition technique has large heat input, large size of a molten pool and higher deposition height of a single layer compared with other techniques, so that the precision of a formed member is low, the surface quality is poor and defects are easy to generate. Secondly, before plasma melting deposition forming of parts is carried out, slicing and layering treatment is needed, the thickness and the path of a slicing layer are set to be constant values, in the deposition forming process, because the angle of a wire fed into a molten pool by a wire feeding gun is fixed and unchanged, deposition widths and deposition heights in different directions have certain deviation from a theoretical design, and deposition process is carried out everywhere, the deviation is continuously accumulated and amplified, and finally the deposition process cannot be carried out, even the parts are scrapped. Therefore, the wire feeding angle needs to be adjusted in real time in the rapid melting deposition process of the metal part, compensation is performed according to the change of the path, and comparison with the theoretical design is performed, so that closed-loop feedback is formed, and the smooth proceeding of the deposition process is ensured.
At present, a manual control mode is generally adopted at home and abroad aiming at the wire feeding angle control in the plasma arc fused deposition forming process, technical personnel judge and analyze the forming state and manually adjust the wire feeding angle to ensure the forming quality. However, the molten pool state is difficult to be observed clearly by an industrial camera due to the influence of the intense arc of the plasma, the wavelength of the arc light is filtered by adding a filter in time, and each forming part is difficult to be observed clearly due to the large size and the complex shape of the forming part. Secondly, technicians can only manually compensate by observing the quality of the formed surface and correct the generated deviation, so that the aim of accurate control cannot be achieved, and the operation requirements of the technicians are strict.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two wire feed control device of plasma in 3D prints can automatically regulated send a angle when sending a silk, has solved the problem that exists among the prior art because send a angle unchangeable, causes the equidirectional wire feeding deposit width and highly inconsistent.
The utility model adopts the technical scheme that the plasma double-wire feeding control device in 3D printing comprises a wire feeder b and a wire feeder a which are arranged at the left side and the right side of a servo motor, wherein an output shaft of the servo motor is connected with a lead screw which is connected with a rotating motor, a fixed plate and a plasma gun are arranged below the rotating motor, the plasma gun is positioned at the central position of the rotating motor, and the fixed plate is positioned behind the plasma gun;
a pair of vertical guide rails are symmetrically arranged at two ends of the fixed plate and two sides of the plasma gun, a slide block b and a slide block a are respectively arranged on the two vertical guide rails, a corner motor b is arranged on the slide block b, and a wire feeding gun b is arranged on the corner motor b; the slide block a is provided with a corner motor a, and the corner motor a is provided with a wire feeding gun a;
the wire feeder b feeds wires by a wire feeding gun b, and the wire feeder a feeds wires by a wire feeding gun a; the plasma gun is connected with a plasma power supply;
the rotating motor is also provided with a limiting device for controlling the rotating angle of the rotating motor, the limiting device is connected with the computer through a wire, the side wall of the rotating motor is also marked with an initial calibration position, and the position of the rotating motor is the corresponding position of the initial calibration position;
the servo motor, the wire feeder b and the wire feeder a are all arranged on the three-coordinate numerical control machine tool.
The utility model is also characterized in that,
the limiting device comprises a positive limiting sensor, a zero position sensor and a negative limiting sensor, the positive limiting sensor, the zero position sensor and the negative limiting sensor are all arranged at the edge position of a fixed cover at the top of the rotating motor, and the positive limiting sensor, the negative limiting sensor and the zero position sensor are connected with a computer through leads.
The positive limit sensor, the zero position sensor and the negative limit sensor are all fixed through a support arranged on a fixed cover at the top of the rotating motor.
The negative limit sensor and the positive limit sensor are used for limiting the maximum movement range of the rotating motor, and the zero position sensor is used as a calibration position.
The beneficial effects of the utility model are that, the utility model discloses a two send a controlling means realize that the double-circuit send usable corner motor automatically regulated to send a silk angle when sending a silk, because positive and negative spacing sensor and zero-bit sensor rotating electrical machines rotation angle's response realizes sending the route in the automatic correction of 3D printing, has effectively improved the work efficiency of equipment.
Drawings
Fig. 1 is a schematic structural diagram of a plasma double wire feeding control device in 3D printing according to the present invention;
fig. 2 is a schematic diagram of a moving track of the plasma double wire feeding control device in 3D printing according to the present invention;
fig. 3 is a flowchart of a control method of the plasma double wire feeding control device in 3D printing according to the present invention;
in the figure 1, 1 is a wire feeder b, 2 is a servo motor, 3 is a wire feeder a, 4 is a positive limit sensor, 5 is a zero position sensor, 6 is a negative limit sensor, 7 is a rotating motor, 8 is a slide block a, 9 is a corner motor a, 10 is a wire feeding gun a, 11 is a plasma gun, 12 is a wire feeding gun b, 13 is a corner motor b, 14 is a slide block b.
Detailed Description
The structure of the plasma double wire feeding control device of the utility model is shown in fig. 1, the whole double wire feeding control device is divided into a left and a right double-wire system, which comprises a wire feeder b1 and a wire feeder a3 which are arranged at the left and the right sides of a servo motor 2, an output shaft of the servo motor 2 is connected with a lead screw, the lead screw is connected with a rotating motor 7, a fixed plate and a plasma gun 11 are arranged below the rotating motor 7, the plasma gun 11 is positioned at the central position of the rotating motor 7, and the fixed plate is positioned behind the plasma gun 11;
a pair of vertical guide rails are symmetrically arranged at two ends of the fixed plate and two sides of the plasma gun 11, a slide block b14 and a slide block a8 are respectively arranged on the two vertical guide rails, an angle motor b13 is arranged on the slide block b14, and a wire feeding gun b12 is arranged on the angle motor b 13; the slide block a8 is provided with a corner motor a9, and the corner motor a9 is provided with a wire feeding gun a 10;
the utility model discloses a corner motor freely adjusts the angle of sending the rifle, realizes sending the arbitrary adjustment of silk angle. The wire feeder b1 feeds wires for the wire feeder b12, and the wire feeder a3 feeds wires for the wire feeder a 10; the plasma gun 11 is connected with a plasma power supply;
the rotating motor 7 is also provided with a limiting device for controlling the rotating angle of the rotating motor, the limiting device is connected with a computer through a wire, the side wall of the rotating motor 7 is also marked with an initial calibration position, and the position of the rotating motor is the corresponding position of the initial calibration position;
the servo motor 2, the wire feeder b1 and the wire feeder a3 are all arranged on the three-coordinate numerical control machine tool.
The limiting device comprises a positive limiting sensor 4, a zero position sensor 5 and a negative limiting sensor 6, the positive limiting sensor 4, the zero position sensor 5 and the negative limiting sensor 6 are all arranged at the edge position of a fixed cover at the top of the rotating motor 7, and the positive limiting sensor 4, the negative limiting sensor 6 and the zero position sensor 5 are connected with a computer through leads.
The positive limit sensor 4, the zero position sensor 5 and the negative limit sensor 6 are all fixed through a support arranged on a fixed cover at the top of the rotating motor 7.
The negative limit sensor 6 and the positive limit sensor 4 are used for limiting the maximum movement range of the rotating motor 7, and the zero position sensor 5 is used as a calibration position.
As shown in fig. 2, the rotation direction of the rotating motor 7 is always tangent to the printing program track, before the device is started, the rotating motor determines the maximum movable range through the positive limit sensor 4 and the negative limit sensor 6, and the zero position sensor 5 is used as the reference point of the rotating motor and used for the computer to confirm the current angle of the rotating motor 7 through the position of the zero limit sensor 5.
Before use, the wire feeder b12 and the wire feeder b10 can be moved to the bottom accessory of the plasma gun 11 by adjusting the upper and lower positions of the sliding block b14 and the sliding block a8, and the angles of the wire feeder b12 and the wire feeder b10 can be adjusted by the rotation angle motor b13 and the rotation angle motor a 10.
A flow of a plasma double wire feeding control device in 3D printing is shown in fig. 3, and is specifically implemented according to the following steps:
step 2, the computer initializes the double wire-feeding gun wire-feeding system, introduces a subdivision program of the running track of the double wire-feeding gun wire-feeding system, and sets the running speed v, the offset position p1 and the limit position p2 of the rotating motor 7 on the computer according to the running track;
step 3, the computer controls the rotating motor 7 to automatically rotate to the position of the zero position sensor 5, so that the current angle of the rotating motor 7 is 0;
step 5, the computer judges whether the rotating motor 7 rotates to the limit position p2, if the rotating motor reaches the limit position p2 or the positions of the positive limit sensor 5 and the negative limit sensor 6, the whole device is paused, the plasma gun 11 and the two wire feeders are in a paused state, the rotating motor 7 automatically rotates to the position of the zero position sensor 5, and the current rotating angle is returned to zero;
and 6, the computer recalculates the tangent angle of the rotating motor 7 relative to the shortest normal of the subdivision path according to the motion track before pause, controls the rotating motor 7 to rotate to reach a new offset angle, restarts the whole motion mechanism, starts the plasma gun 11 and the two wire feeders to operate, and starts wire feeding of the wire feeding gun a and the wire feeding gun b until the printing of the part is finished.
When the rotating motor rotates, when the rotating motor reaches a set angle or the positions of the positive limit sensor and the negative limit sensor, the plasma gun stops operating, the wire feeding gun b and the wire feeding gun a stop feeding wires, the wire feeding machine a and the wire feeding machine b stop operating, and the rotating motor automatically returns to the position of the zero position sensor;
after the rotating motor returns to the position of the zero position sensor, the computer recalculates the current deflection angle, so that the rotating motor rotates relative to the shortest normal tangent angle of the subdivision path, after the rotating motor rotates to the deflection angle, the wire feeder a and the wire feeder b start to operate to respectively feed wires for the wire feeder a and the wire feeder b, the plasma gun starts to operate, and the whole operating mechanism operates according to the subdivision path preset by the computer;
the computer sets parameters such as offset angle, running speed and limit position of the rotating motor according to the running track in the imported subdivision program, so that the rotating direction of the rotating motor 7 is always tangent to the normal of the printing program track. When the operation angle reaches the set limit position, in order to avoid the winding of the wires sent by the wire feeder a3 and the wire feeder b1 due to unidirectional rotation, the whole motion mechanism and the plasma gun 11 are suspended, the control device sends out an instruction to enable the rotating motor 7 to return to the zero position sensor 5, the current rotating angle of the rotating motor 7 is 0, the control device resets the offset angle, the shortest operation path of the rotating motor 7 is calculated according to the position of the current subdivision path, and the rotating motor 7 rapidly operates to the normal tangent position of the new subdivision path.
If the rotational angle of the rotating electrical machine 7 is always within the limit during operation, the rotating electrical machine 7 does not need to be biased again by the return-to-zero sensor 5.
The utility model discloses at two silk controlling means during operation that send, the angle that the rifle sent a silk is sent in adjustment that can be automatic accurate, has avoided the equidirectional not sending silk deposit width and highly inconsistent, has greatly improved work efficiency and product quality.
Claims (4)
1. The plasma double-wire-feeding control device in 3D printing is characterized by comprising a wire feeder b (1) and a wire feeder a (3) which are arranged on the left side and the right side of a servo motor (2), wherein an output shaft of the servo motor (2) is connected with a lead screw, the lead screw is connected with a rotating motor (7), a fixing plate and a plasma gun (11) are arranged below the rotating motor (7), the plasma gun (11) is positioned at the center of the rotating motor (7), and the fixing plate is positioned behind the plasma gun (11);
a pair of vertical guide rails are symmetrically arranged at two ends of the fixed plate and at two sides of the plasma gun (11), a sliding block b (14) and a sliding block a (8) are respectively arranged on the two vertical guide rails, a corner motor b (13) is arranged on the sliding block b (14), and a wire feeding gun b (12) is arranged on the corner motor b (13); an angle motor a (9) is arranged on the sliding block a (8), and a wire feeding gun a (10) is arranged on the angle motor a (9);
the wire feeder b (1) is a wire feeding gun b (12) for feeding wires, and the wire feeder a (3) is a wire feeding gun a (10) for feeding wires; the plasma gun (11) is connected with a plasma power supply;
the rotating motor (7) is also provided with a limiting device for controlling the rotating angle of the rotating motor, the limiting device is connected with a computer through a wire, the side wall of the rotating motor (7) is also marked with an initial calibration position, and the position of the rotating motor is the corresponding position of the initial calibration position;
the servo motor (2), the wire feeder b (1) and the wire feeder a (3) are all arranged on the three-coordinate numerical control machine tool.
2. The plasma double wire feeding control device in 3D printing according to claim 1, wherein the limiting device comprises a positive limiting sensor (4), a zero position sensor (5) and a negative limiting sensor (6), the positive limiting sensor (4), the zero position sensor (5) and the negative limiting sensor (6) are arranged at the edge position of a top fixed cover of the rotating motor (7), and the positive limiting sensor (4), the negative limiting sensor (6) and the zero position sensor (5) are connected with a computer through leads.
3. The plasma double wire feed control device in 3D printing according to claim 2, wherein the positive limit sensor (4), the zero position sensor (5) and the negative limit sensor (6) are fixed by a bracket arranged on a fixed cover at the top of the rotating motor (7).
4. The plasma double wire feed control device in 3D printing according to claim 2, wherein the negative limit sensor (6) and the positive limit sensor (4) are used for limiting the maximum range of motion of the rotating motor (7), and the zero position sensor (5) is used as a calibration position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146918.8U CN211570773U (en) | 2019-12-04 | 2019-12-04 | Plasma double-wire-feeding control device in 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146918.8U CN211570773U (en) | 2019-12-04 | 2019-12-04 | Plasma double-wire-feeding control device in 3D printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211570773U true CN211570773U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922146918.8U Active CN211570773U (en) | 2019-12-04 | 2019-12-04 | Plasma double-wire-feeding control device in 3D printing |
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| Country | Link |
|---|---|
| CN (1) | CN211570773U (en) |
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- 2019-12-04 CN CN201922146918.8U patent/CN211570773U/en active Active
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