CN114262768A - Constant-temperature heating equipment for flame surface quenching and control method - Google Patents
Constant-temperature heating equipment for flame surface quenching and control method Download PDFInfo
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- CN114262768A CN114262768A CN202111605216.7A CN202111605216A CN114262768A CN 114262768 A CN114262768 A CN 114262768A CN 202111605216 A CN202111605216 A CN 202111605216A CN 114262768 A CN114262768 A CN 114262768A
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- 238000010791 quenching Methods 0.000 title claims abstract description 79
- 230000000171 quenching effect Effects 0.000 title claims abstract description 78
- 238000010438 heat treatment Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 164
- 239000007921 spray Substances 0.000 claims abstract description 18
- 238000001354 calcination Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 59
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 description 32
- 238000007789 sealing Methods 0.000 description 12
- 210000004907 gland Anatomy 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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Abstract
The application discloses constant-temperature heating equipment for flame surface quenching and a control method, and the constant-temperature heating equipment comprises a quenching tank, a rotary workbench arranged in the quenching tank, a lifting device for driving the rotary workbench to lift, a spray gun device for calcining and processing metal workpieces, a temperature sensor arranged at the top of the quenching tank and used for detecting the temperature of the metal workpieces, and a control system; the spray gun device comprises a lifting frame arranged at the top of the quenching bath, a transverse moving assembly used for driving the lifting frame to move along the horizontal direction, a lifting body connected to the lifting frame in a sliding mode along the vertical direction, a flame generator arranged on the lifting body, a lifting assembly used for driving the lifting body to move along the vertical direction, a rotating assembly used for driving the angle of the flame generator to change, and a distance measuring sensor arranged at one end, close to the metal workpiece, of the flame generator. The calcining equipment has the effect of keeping the distance between the calcining equipment and each side wall of the metal workpiece constant in the rotating process of the metal workpiece.
Description
Technical Field
The application relates to the technical field of flame surface quenching, in particular to constant-temperature heating equipment for flame surface quenching and a control method.
Background
Flame surface quenching is a process for heat treatment of the surface of a metal workpiece, and is mainly used for obtaining different structures and properties on the surface and inside of the metal workpiece, so that the hardness and the wear resistance of the working part of the metal workpiece are improved.
However, the current flame surface quenching process still has disadvantages. For example, in the quenching process using the manual equipment, the operator can only calcine the surface of the metal workpiece through experience, and it is difficult to ensure that the distance between the manual equipment used and each side wall of the metal workpiece is kept constant during the rotation of the metal workpiece. Moreover, even with existing quench machining tools, it is difficult to ensure that the distance between the calcining apparatus and each side wall of the metal workpiece remains constant. Therefore, the metal workpiece is liable to be over-burned or under-heated.
Disclosure of Invention
The application provides constant-temperature heating equipment for flame surface quenching and a control method, which can keep the distance between calcining equipment and each side wall of a metal workpiece constant in the rotating process of the metal workpiece.
The application provides a constant temperature heating equipment and control method for flame surface quenching, adopts following technical scheme:
on one hand:
a constant temperature heating device for flame surface quenching comprises a quenching bath, a rotary workbench arranged in the quenching bath, a lifting device for driving the rotary workbench to lift, a spray gun device for calcining metal workpieces, a temperature sensor arranged at the top of the quenching bath and used for detecting the temperature of the metal workpieces, and a control system, wherein the spray gun device is used for calcining the metal workpieces; the spray gun device comprises a lifting frame arranged at the top of the quenching bath, a transverse moving assembly used for driving the lifting frame to move along the horizontal direction, a lifting body connected to the lifting frame in a vertical sliding manner, a flame generator arranged on the lifting body, a lifting assembly used for driving the lifting body to move along the vertical direction, a rotating assembly used for driving the angle of the flame generator to change, and a distance measuring sensor arranged at one end, close to the metal workpiece, of the flame generator; the rotary workbench, the lifting device, the temperature sensor, the transverse moving assembly, the flame generator, the lifting assembly, the rotating assembly and the distance measuring sensor are all connected with the control system.
By adopting the technical scheme, when the metal workpiece is fixed on the rotary worktable, the rotary worktable drives the metal workpiece to rotate, the distance measuring sensor detects the distance between the flame generator and the side wall of the metal workpiece in real time, the control system receives the distance signal sent by the distance measuring sensor and controls the transverse moving assembly to work in real time, so that the distance between the flame generator and each side wall of the metal workpiece is kept constant, thereby facilitating the uniform calcination of each side wall of the metal workpiece, simultaneously controlling the working of the rotating assembly by the control system, adjusting the rotating angle of the flame generator in real time, thereby facilitating the uniform heating of the metal workpiece in the horizontal direction and the vertical direction, detecting the temperature of the metal workpiece in real time by the temperature sensor, therefore, all side walls of the metal workpiece are heated uniformly, and the problem that the metal workpiece is over-burnt or under-heated is solved.
Preferably, the rotating assembly comprises a first rotating motor and a second rotating motor, the first rotating motor is horizontally arranged at the end part of the lifting body, the connecting plate is fixedly connected to an output shaft of the first rotating motor, the second rotating motor is vertically arranged in the connecting plate, and the output shaft of the second rotating motor is connected with the bottom wall of the flame generator; and the first rotating motor and the second rotating motor are both connected with a control system.
By adopting the technical scheme, the control system controls the rotating body to rotate, so that the side wall of the metal workpiece in the vertical direction can be conveniently calcined; the control system controls the second rotating body to rotate, so that the side wall of the metal workpiece in the horizontal direction can be conveniently calcined; therefore, each side wall of the metal workpiece is heated uniformly.
Preferably, the lifting assembly comprises a lifting servo oil cylinder and a lifting linear guide rail pair, the lifting servo oil cylinder is vertically arranged at the top of the lifting frame, the piston rod end of the lifting servo oil cylinder is hinged to the side wall of the lifting body, the lifting linear guide rail pair is vertically arranged on the side wall of the lifting frame opposite to the lifting body, and the lifting servo oil cylinder is connected with the control system; and the lifting frame is also provided with a limiting assembly for controlling the stroke of the lifting body.
By adopting the technical scheme, the control system controls the lifting servo oil cylinder to work, the lifting servo oil cylinder drives the lifting body to move vertically, so that the height of the flame generator is convenient to adjust, the flame generator is convenient to align to the side wall of the metal workpiece, the lifting linear guide rail pair is convenient to guide the lifting body, the stability of the lifting body during lifting is improved, the limiting assembly is convenient to limit the lifting body, and the stroke of the lifting body to move is convenient to control.
Preferably, the limit assembly comprises a limit switch I and a limit switch II, the limit switch I is installed at the bottom end of the lifting frame, the limit switch II is installed at the top end of the lifting frame, and the limit switch I and the limit switch II are both connected with the control system.
By adopting the technical scheme, when the first limit switch and the second limit switch are convenient to detect that the lifting body is at the maximum stroke position in the vertical direction, the first limit switch and the second limit switch output limit signals to the control system, the control system receives the limit signals and outputs stop signals, and the lifting servo oil cylinder receives the stop signals and stops working.
Preferably, the transverse moving assembly comprises a transverse moving seat, a transverse moving oil cylinder seat, a transverse moving linear guide rail pair and a transverse moving servo cylinder, the transverse moving seat is installed at the top of the quenching bath and extends in the horizontal direction, the transverse moving oil cylinder seat is fixedly connected to the bottom end of the lifting frame, a cylinder body of the transverse moving servo cylinder is installed at one end, close to the outer side of the quenching bath, of the transverse moving seat, a piston rod of the transverse moving servo cylinder extends towards the middle of the quenching bath and is fixedly connected to the side wall of the transverse moving oil cylinder seat, the transverse moving linear guide rail pair is installed on the side wall, opposite to the transverse moving seat and the transverse moving oil cylinder seat, and the transverse moving servo cylinder is connected with the control system.
By adopting the technical scheme, the control system drives the transverse moving servo cylinder to work, the transverse moving servo cylinder drives the transverse moving oil cylinder seat to move along the horizontal direction, the transverse moving oil cylinder seat moves to drive the lifting frame to move along the horizontal direction, so that the distance between the port of the flame generator and the metal workpiece is convenient to adjust, the transverse moving linear guide rail pair is convenient to guide the transverse moving oil cylinder seat, and the stability of the transverse moving oil cylinder seat during moving is improved.
Preferably, the cylinder body of the transverse moving servo cylinder is hinged to one end, close to the outer side of the quenching bath, of the transverse moving seat, and the piston rod of the transverse moving servo cylinder is hinged to the side wall of the transverse moving cylinder seat.
By adopting the technical scheme, errors can occur in the installation process of the transverse moving oil cylinder seat, the transverse moving linear guide rail pair and the transverse moving servo cylinder, the cylinder body of the transverse moving servo cylinder is hinged to one end, close to the outer side of the quenching bath, of the transverse moving seat, the piston rod of the transverse moving servo cylinder is hinged to the side wall of the transverse moving oil cylinder seat, the transverse moving oil cylinder seat is conveniently aligned with the transverse moving linear guide rail pair, and the installation and error adjustment are convenient.
Preferably, the rotary working table comprises a rotary table, a lifting plate for mounting the rotary table and a driving assembly for driving the rotary table to rotate; the lifting device comprises a support column, a double-output-shaft oil cylinder, a first tightening wheel, a second tightening wheel and a traction rope, the support column is provided with two parts, namely two parts, which are arranged on two sides in a quenching tank at intervals, the support column is vertically arranged, the first tightening wheel is arranged at the end of a piston rod of the double-output-shaft oil cylinder, the second tightening wheel is arranged at the end part of the lifting plate, the first reversing wheel is arranged on the inner bottom wall of the quenching tank, the second reversing wheel is arranged on the top end of the support column, one end of the traction rope is fixedly connected to the first tightening wheel, the other end of the traction rope sequentially penetrates the first reversing wheel, the second reversing wheel and is fixedly connected to the second tightening wheel, and the double-output-shaft oil cylinder is connected with a control system.
Through adopting above-mentioned technical scheme, the work of two play axle hydro-cylinders of control system control, the piston rod removal at its both ends is convenient for spur the haulage rope when two play axle hydro-cylinders are worked, switching-over wheel one and switching-over wheel two are convenient for commutate and support the haulage rope, thereby be convenient for make the haulage rope be in the state of tightening, and then reduced the haulage rope and take place frictional probability with the lifter plate at the in-process that removes, with this be convenient for protect the haulage rope, the haulage rope is at the in-process that removes, be convenient for change the height of lifter plate, thereby change the height of revolving stage.
As preferred, drive assembly includes motor, pivot, transmission shaft, drive gear one and drive gear two, the pivot is rotated and is connected in the lifter plate, the vertical setting of pivot and top fixed connection put in the central point of revolving stage bottom, the transmission shaft rotates and connects in the lifter plate, the transmission shaft is located one side of pivot, the motor is installed in the lifter plate, just the output shaft of motor and the bottom fixed connection of transmission shaft, the top of transmission shaft extend to the outside of lifter plate and with a drive gear fixed connection, the lateral wall in the pivot is established to two covers of drive gear, drive gear one and two meshes of drive gear, the motor is connected with control system.
By adopting the technical scheme, the control system controls the motor to work, the motor works to drive the transmission shaft to rotate, the transmission shaft rotates to drive the first transmission gear to rotate, the first transmission gear rotates to drive the second transmission gear to rotate, the second transmission gear rotates to drive the rotating shaft to rotate, the rotating shaft rotates to drive the rotating platform to rotate, and the rotating platform rotates to drive the metal workpiece to rotate, so that the flame generator can calcine each side wall of the metal workpiece conveniently.
On the other hand:
a control method adopting the constant-temperature heating equipment for flame surface quenching comprises the following steps:
s1, determining the number of flame generators according to the shape of the metal workpiece;
s2, according to the shape of the metal workpiece, the control system calculates the distance of the flame generator to move according to a formula, and adjusts the distance between the flame generator and the metal workpiece in real time;
the formula is: in the range of 0 ° ≦ 45 ° in the middle, γ = β c = a · sin in the middle, tan γ c = d = c γ e = a · cos in the middle, f = e-d = a · cos in the middle, c/tan γ = a · cos in the middle, (a · sin in the middle)/tan (in the middle), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle)/tan (in the middle) + β), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle of)/tan (in the middle of (the middle of) and (in the middle of) of (β) ])
=a-a·［cosØ-sinØ/tan(Ø+β）］=a·｛1-［cosØ-sinØ/tan(Ø+β）］｝；
δ: the distance the flame generator needs to move; in the middle: the angle of rotation of the metal workpiece; a: the distance between the initial processing point of the side edge of the metal workpiece and the rotation center of the metal workpiece; b: a distance along the rotation direction between an end point adjacent to the initial machining point to a rotation center of the metal workpiece; c: after the metal workpiece rotates by the angle, the distance between the initial processing point and a connecting line of the flame generator and the rotation center of the metal workpiece is increased; d: after the metal workpiece rotates by an angle, the distance from the intersection point between the initial processing point and the connecting line of the flame generator and the rotation center of the metal workpiece to the intersection point between the flame generator and the side edge of the metal workpiece; e: after the metal workpiece rotates by the angle, the minimum distance between the initial processing point and the rotation center of the metal workpiece is obtained; f: after the metal workpiece rotates by an angle, the distance between the intersection point of the flame generator and the side edge of the metal workpiece and the rotation center of the metal workpiece is increased; beta: an included angle between the initial processing point and a connecting line of the rotation center of the metal workpiece to the adjacent side edge of the metal workpiece; γ: after the metal workpiece rotates by an angle, the included angle between the connecting line of the flame generator and the rotation center of the metal workpiece and the side edge of the rotated metal workpiece is formed;
s3, detecting the temperature of the metal workpiece in real time by the temperature sensor, transmitting the detected real-time temperature to the control system, comparing the real-time temperature with a preset temperature by the control system, and controlling the flame generator to continuously calcine the metal workpiece by the control system when the real-time temperature is lower than the preset temperature;
and S4, cooling, namely, after the metal workpiece is heated to a preset temperature, controlling the lifting device to drive the rotating table to descend by the control system until the metal workpiece is completely positioned below the liquid level of the cooling liquid in the quenching tank.
By adopting the technical scheme, the distance between the flame generator and the metal workpiece can be calculated through the formula, so that the distance that the flame generator needs to move is determined, the distance between the fire outlet of the flame generator and the side wall of the metal workpiece to be calcined is kept constant, and the effect of uniformly heating the metal workpiece is achieved.
Preferably, the metal workpiece is an irregularly shaped metal workpiece.
By adopting the technical scheme, the difficulty in processing the metal workpiece with the irregular shape is higher in the related technology, and the control method can be used for automatically processing the metal workpiece with the irregular shape, so that the processing efficiency and accuracy are greatly improved.
In summary, the present application has the following beneficial effects:
the control system can control the work of the transverse moving assembly according to a calculation formula, and the distance between the flame generator and the side edge of the metal workpiece is adjusted in real time when the transverse moving assembly works, so that the distance between the flame generator and the side wall of the metal workpiece is kept constant, and the side walls of the metal workpiece are uniformly heated. Meanwhile, the control system controls the first rotating body and the second rotating body to work in real time, so that the flame generator can uniformly calcine the metal workpiece in the vertical direction and the horizontal direction, the temperature sensor can monitor the temperature of the metal workpiece in real time, and when the temperature of the metal workpiece is lower than the preset temperature, the control system controls the flame generator to continuously heat the metal workpiece, so that the metal workpiece can reach the preset temperature;
when the surface of the metal workpiece reaches the preset temperature, the control system controls the lifting device to work, so that the rotating platform drives the metal workpiece to be positioned below the liquid level in the quenching tank, and the metal workpiece is convenient to finish quenching operation.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.
Fig. 2 is a plan view of the entire structure of embodiment 1 of the present application.
Fig. 3 is a partial sectional view of a rotary table according to embodiment 1 of the present application.
FIG. 4 is a schematic structural view of a spray gun apparatus according to embodiment 1 of the present application.
Fig. 5 is a front view of the spray gun apparatus according to embodiment 1 of the present application, which shows a connection relationship between the spray gun apparatus and the elevating body.
FIG. 6 shows measured parameters of a metal workpiece according to example 2 of the present application.
Description of reference numerals: 1. a quenching bath; 2. rotating the working table; 21. a rotating table; 22. a lifting plate; 23. a drive assembly; 231. a motor; 232. a drive shaft; 233. a rotating shaft; 234. a first transmission gear; 235. a second transmission gear; 31. a gland; 32. a first end cover; 33. a first lip-shaped sealing ring; 34. a first O-shaped sealing ring; 35. two discs of bearings I; 36. a spacer bush I; 37. a second spacer sleeve; 38. a thrust bearing; 41. two disks of bearings II; 42. a third spacer sleeve; 43. a spacer sleeve IV; 44. a base body; 45. a second end cover; 46. an O-shaped sealing ring II; 47. a lip-shaped sealing ring II; 48. a large bore; 49. a small bore; 51. a shaft pad; 52. a small retainer ring; 53. a large retainer ring; 6. a lifting device; 61. a support pillar; 62. a double-output-shaft oil cylinder; 63. a first tightening wheel; 64. a second tightening wheel; 65. a hauling rope; 66. a first reversing wheel; 67. a second reversing wheel; 68. a guide rail; 7. a spray gun device; 71. a lifting frame; 72. a lifting body; 73. a flame generator; 731. a flame gun body; 732. a flame gun body bracket; 733. a gas flame nozzle; 734. a positive and negative igniter; 735. a feed servo cylinder; 737. a coupling plate; 738. a roller; 74. a lifting assembly; 741. a lifting servo cylinder; 742. a lifting linear guide rail pair; 75. a rotating assembly; 751. rotating the first body; 7511. a first rotating motor; 7512. a connecting plate; 752. a second rotating body; 7521. a second rotating motor; 76. a ranging sensor; 77. a limiting component; 771. a first limit switch; 772. a second limit switch; 78. a traversing assembly; 781. a traversing seat; 782. transversely moving the oil cylinder seat; 783. transversely moving the linear guide rail pair; 784. transversely moving the servo cylinder; 8. a temperature sensor; 9. a metal workpiece.
Detailed Description
The application discloses constant-temperature heating equipment for flame surface quenching and a control method.
Example 1:
referring to fig. 1 and 2, the constant temperature heating apparatus for flame surface quenching includes a quenching bath 1, a rotary table 2, a lifting device 6, a lance device 7, and a control system.
The quenching tank 1 is of a cylindrical tank body structure, and cooling liquid is contained in the quenching tank 1 and used for rapidly cooling the metal workpiece 9. The rotating workbench 2 is arranged at the central position of the quenching bath 1 and used for fixing the metal workpiece 9 and driving the metal workpiece 9 to rotate at a uniform speed along the circumferential direction of the quenching bath 1.
The lifting device 6 is arranged in the quenching bath 1 and used for driving the rotary worktable 2 to move vertically, so that the height of the metal workpiece 9 in the quenching bath 1 can be changed conveniently. The spray gun device 7 is arranged on the top of the quenching bath 1 so as to facilitate the calcination heating of the metal workpiece 9. The number of the lance devices 7 may be one or a plurality of, and six lance devices 7 are provided at equal intervals in the circumferential direction of the quenching bath 1 in this embodiment as an example.
Referring to fig. 1, the rotary table 2 includes a rotary table 21, a lifting plate 22, a base 44, and a driving assembly 23. The lifting plate 22 is horizontally disposed in the quenching bath 1 and is used for supporting the rotating table 21. The base 44 is mounted to the top surface of the elevating plate 22 by bolts for mounting the rotating table 21. The rotary table 21 is rotatably connected to the top surface of the base 44 for mounting the metal work 9. The driving assembly 23 is installed in the seat body 44 and is used for driving the rotating table 21 to rotate along the circumferential direction of the quenching bath 1. Four guide rails 68 are further installed in the quenching bath 1, the four guide rails 68 are divided into two groups, and the two groups of guide rails 68 are symmetrically arranged on the left side and the right side of the quenching bath 1. The two guide rails 68 of the same group are parallel to each other, and the side wall of the lifting plate 22 facing the guide rails 68 is rotatably connected with a guide wheel (not shown in the figure) through a bearing, and the guide wheel is vertically and rollably connected with the guide rails 68.
Referring to fig. 2, a plurality of temperature sensors 8 are further installed on the top surface of the quenching bath 1 for detecting the temperature of the surface of the metal workpiece 9 in real time. In the embodiment, six temperature sensors 8 are taken as an example, the six temperature sensors 8 are arranged at equal intervals along the circumferential direction of the quenching bath 1, each temperature sensor 8 is located between two adjacent spray gun devices 7, and the temperature sensors 8 are connected with the control system.
Referring to fig. 1 and 2, the lifting device 6 includes a support column 61, a double-output-shaft cylinder 62, a first take-up wheel 63, and a second take-up wheel 64. The number of the supporting columns 61 is two, and the two supporting columns 61 are symmetrically arranged on two sides in the quenching bath 1. Each support column 61 is located between two adjacent spray gun devices 7, and the support columns 61 are arranged vertically. The double-output-shaft oil cylinder 62 is arranged at the bottom in the quenching bath 1, the double-output-shaft oil cylinder 62 extends along the radial direction of the quenching bath 1, and the double-output-shaft oil cylinder 62 is connected with a control system. The first tightening wheel 63 is rotatably connected to the end surface of the piston rod of the double-output-shaft cylinder 62, and the second tightening wheel 64 is rotatably connected to the end surface of the lifting plate 22. The inner bottom wall of the quenching bath 1 is further provided with a first reversing wheel 66 through a wheel seat, the top end of the supporting column 61 is provided with a second reversing wheel 67 through the wheel seat, and the first reversing wheel 66 and the second reversing wheel 67 are arranged oppositely. One end of the traction rope 65 is fixedly connected to the first tightening wheel 63, and the other end of the traction rope 65 is sequentially wound on the first reversing wheel 66 and the second reversing wheel 67 and is fixedly connected to the second tightening wheel 64.
When the control system controls the double-output-shaft oil cylinder 62 to work, the piston rods at the two ends of the double-output-shaft oil cylinder 62 move simultaneously, so that the traction rope 65 is pulled to move, the traction rope 65 moves to drive the lifting plate 22 to lift, and therefore the height of the metal workpiece 9 can be changed conveniently. The first reversing wheel 66 and the second reversing wheel 67 facilitate placing the pull cord 65 in tension, thereby reducing the probability of interference or friction between the pull cord 65 and the lift plate 22.
Referring to fig. 1 and 3, the driving assembly 23 includes a motor 231, a transmission shaft 232, a rotation shaft 233, a first transmission gear 234, and a second transmission gear 235. A large hole cavity 48 and a small hole cavity 49 are formed in the seat body 44, the large hole cavity 48 and the small hole cavity 49 both extend vertically, and the large hole cavity 48 and the small hole cavity 49 are both cylindrical cavity structures. The large hole cavity 48 and the small hole cavity 49 are parallel to each other, the top end of the large hole cavity 48 is communicated with the top surface of the seat body 44, the two ends of the small hole cavity 49 are respectively communicated with the top surface and the bottom surface of the seat body 44, and the diameter of the large hole cavity 48 is larger than that of the small hole cavity 49.
Referring to fig. 3, the shaft 233 is located in the large bore 48, and the top end of the shaft 233 extends to the upper side of the base and is connected to the center of the bottom of the rotary table 21 through a key. Thrust bearing 38 is installed to the inner bottom wall in big vestibule 48, and thrust bearing 38 cover is established and is fixed in the bottom of pivot 233. Two first two-disc bearings 35 are further mounted in the large hole cavity 48, the two first two-disc bearings 35 are vertically arranged at intervals, and the two first two-disc bearings 35 are sleeved and fixed in the middle of the rotating shaft 233. A first spacer bush 36 and a second spacer bush 37 are further arranged between the adjacent first two-disc bearings 35, the first spacer bush 36 and the second spacer bush 37 are both circular, and the inner diameter of the second spacer bush 37 is larger than that of the first spacer bush 36. The first spacer 36 is fixed to the middle of the rotating shaft 233, and the second spacer 37 is fixed to the inner wall of the large bore 48. The second spacer sleeve 37 is sleeved outside the first spacer sleeve 36, and the heights of the first spacer sleeve 36 and the second spacer sleeve 37 are equal. The arrangement of the first spacer 36 and the second spacer 37 facilitates the limiting and supporting of the rotating shaft 233, and reduces the probability of friction between the first two-disc bearing 35.
Referring to fig. 3, the lower portion of the rotating shaft 233 is further sleeved with a shaft pad 51, and the shaft pad 51 is located between the thrust bearing 38 and the first two-disc bearing 35 on the lower side, so that the first two-disc bearing 35 on the lower side is conveniently supported, and the probability of friction between the thrust bearing 38 and the first two-disc bearing 35 on the lower side is reduced. The first end cover 32 is mounted on the top surface of the seat 44 and located at the opening of the large bore 48, the first end cover 32 is annular, and the first end cover 32 is fixedly connected to the top surface of the seat 44 through bolts and used for axially positioning the rotating shaft 233. The middle upper portion of the rotating shaft 233 is sleeved with a first lip seal 33 and a first O-ring seal 34, the first lip seal 33 and the first O-ring seal 34 are located in a gap between the first end cover 32 and the rotating shaft 233, and the height of the first lip seal 33 is higher than that of the first O-ring seal 34 and used for sealing the gap between the first end cover 32 and the rotating shaft 233, so that the probability of cooling liquid entering the large cavity 48 is reduced. The middle upper portion of the rotating shaft 233 is further sleeved with a large retaining ring 53, and the large retaining ring 53 is located between the first end cover 32 and the first two-disc bearing 35 on the upper side, so that the rotating shaft 233 is further axially limited.
Referring to fig. 3, the top surface of the lifting plate 22 is provided with a mounting groove (not shown) for placing the motor 231. The motor 231 is mounted to the bottom wall of the housing 44 by screws. The transmission shaft 232 is located in the small hole cavity 49, and the bottom end of the transmission shaft 232 is connected with the output shaft of the motor 231 through a spline pair.
Two second disk bearings 41 are further installed in the small hole cavity 49, the two second disk bearings 41 are vertically arranged at intervals, and the two second disk bearings 41 are sleeved and fixed in the middle of the transmission shaft 232. A third spacer bush 42 and a fourth spacer bush 43 are further arranged between the two adjacent second disc bearings 41, the third spacer bush 42 and the fourth spacer bush 43 are both circular, and the inner diameter of the fourth spacer bush 43 is larger than that of the third spacer bush 42. The third spacer bush 42 is sleeved and fixed at the middle part of the transmission shaft 232, and the fourth spacer bush 43 is fixed at the inner wall of the small hole cavity 49. The spacer sleeve IV 43 is sleeved outside the spacer sleeve III 42, and the height of the spacer sleeve III 42 is equal to that of the spacer sleeve IV 43. The third spacer bush 42 and the fourth spacer bush 43 are arranged to conveniently limit and support the transmission shaft 232, and the probability of friction between the two second two-disc bearings 41 is reduced.
The second end cover 45 is mounted on the top surface of the seat 44 and located at the opening of the small hole cavity 49, the second end cover 45 is annular, and the second end cover 45 is fixedly connected to the top surface of the seat 44 through bolts and used for axially positioning the transmission shaft 232. The middle upper portion of the transmission shaft 232 is sleeved with a second lip-shaped sealing ring 47 and a second O-shaped sealing ring 46, the second lip-shaped sealing ring 47 and the second O-shaped sealing ring 46 are located in a gap between the second end cover 45 and the transmission shaft 232, and the height of the second lip-shaped sealing ring 47 is higher than that of the second O-shaped sealing ring 46 and used for sealing the gap between the second end cover 45 and the transmission shaft 232, so that the probability that cooling liquid enters the small hole cavity 49 is reduced. The middle upper part of the transmission shaft 232 is also sleeved with a small retainer ring 52, and the small retainer ring 52 is positioned between the second end cover 45 and the first two-disc bearing 35 on the upper side, so that the transmission shaft 232 is further axially limited.
Referring to fig. 3, the upper end of the transmission shaft 232 is connected with a first transmission gear 234 through a key, the top end of the transmission shaft 232 is fixedly connected with a gland 31 through a screw, the gland 31 is disc-shaped, and the diameter of the gland 31 is greater than the inner diameter of the first transmission gear 234, so that the first transmission gear 234 is axially fixed. The middle upper part of the rotating shaft 233 is connected with a second transmission gear 235 through a key, and the diameter of the second transmission gear 235 is larger than that of the first transmission gear 234. The second transmission gear 235 is engaged with the first transmission gear 234, and both the second transmission gear 235 and the first transmission gear 234 are located between the rotary table 21 and the base 44.
The rotating table 21, the base 44, the rotating shaft 233, the transmission shaft 232, the screw, the first end cover 32, the second end cover 45, the gland 31, the motor 231, the first transmission gear 234, the second transmission gear 235, the support column 61, the double-output-shaft oil cylinder 62, the first tightening wheel 63, the second tightening wheel 64, the first reversing wheel 66, the second reversing wheel 67, and the like are waterproof components.
The control system controls the motor 231 to work, an output shaft of the motor 231 rotates to drive the transmission shaft 232 to rotate, the transmission shaft 232 rotates to drive the transmission gear I234 to rotate, the transmission gear I234 rotates to drive the transmission gear II 235 to rotate, the transmission gear II 235 rotates to drive the rotating shaft 233 to rotate, the rotating shaft 233 rotates to drive the rotating platform 21 to rotate, and the rotating platform 21 rotates to drive the metal workpiece 9 to rotate, so that the spray gun device 7 can calcine and heat the metal workpiece 9 conveniently.
Referring to fig. 1 and 4, the spray gun apparatus 7 includes a traverse assembly 78. The traversing assembly 78 comprises a traversing seat 781, a traversing cylinder seat 782, a traversing linear guide rail pair 783 and a traversing servo cylinder 784. The transverse moving seat 781 is installed on the upper end surface of the quenching bath 1, and the transverse moving seat 781 is horizontally arranged and extends to the center of the quenching bath 1. The transverse moving servo cylinder 784 is located at one end, close to the outer side of the quenching bath 1, of the transverse moving seat 781, the transverse moving servo cylinder 784 is hinged to the transverse moving seat 781 through a middle pin shaft, and an output shaft of the transverse moving servo cylinder 784 is hinged to the bottom wall of the transverse moving oil cylinder seat 782. The transverse linear guide rail pair 783 is mounted on the opposite side walls of the transverse base 781 and the transverse cylinder base 782. The two groups of transverse linear guide rail pairs 783 are respectively positioned on two sides of the transverse cylinder seat 782, and the two groups of transverse linear guide rail pairs 783 are parallel to the transverse cylinder seat 781 and used for guiding the transverse cylinder seat 782. The traversing servo cylinder 784 is connected to a control system.
The control system controls the transverse moving servo cylinder 784 to work, and the piston rod of the transverse moving servo cylinder 784 moves to drive the transverse moving cylinder seat 782 to move along the radial direction of the quenching bath 1.
Referring to fig. 4, the spray gun apparatus 7 further includes a lifting frame 71, a lifting body 72, a flame generator 73, a rotating assembly 75, and a lifting assembly 74. The lifting frame 71 is vertically arranged, and the transverse oil cylinder seat 782 is fixedly connected to the bottom end of the lifting frame 71 through a bolt. The lifting assembly 74 comprises a lifting servo oil cylinder 741 and a lifting linear guide pair 742, the lifting servo oil cylinder 741 is hinged to the top end of the lifting frame 71 through a middle pin shaft, and a piston rod of the lifting servo oil cylinder 741 is arranged vertically downwards. The lifting body 72 is horizontally arranged, and a piston rod of the lifting servo oil cylinder 741 is hinged to the side wall of the lifting body 72.
Referring to fig. 4 and 5, two sets of lifting linear guide pairs 742 are provided, and the two sets of lifting linear guide pairs 742 are parallel to each other and vertically extend. The traverse cylinder seat 782 is located between the two sets of lifting linear guide rail pairs 742, and the lifting linear guide rail pairs 742 are mounted on opposite side walls of the lifting frame 71 and the lifting body 72 and used for guiding the lifting body 72.
Referring to fig. 5, the lifting frame 71 is provided with a limit component 77, and the limit component 77 comprises a limit switch 771 and a limit switch 772. The first limit switch 771 is installed at the bottom end of the lifting frame 71, the second limit switch 772 is installed at the top end of the lifting frame 71, and the first limit switch 771 and the second limit switch 772 are both connected with the control system. The limit switch first 771 and the limit switch second 772 are convenient for outputting a limit signal to the control system when detecting that the lifting body 72 is at the maximum stroke in the vertical direction, the control system receives the limit signal and outputs a stop signal, and the lifting servo cylinder 741 receives the stop signal and stops working.
Referring to fig. 4 and 5, the flame generator 73 includes a flame gun body 731, a flame gun body holder 732, a gas flame nozzle 733, positive and negative igniters 734, and a feed servo cylinder 735. The flame generators 73 are mounted at the end of the lifting body 72, and one flame generator 73 may be mounted on one lifting body 72, or two flame generators 73 may be mounted on one lifting body 72, and preferably two flame generators 73 are mounted in this embodiment.
A rotating assembly 75 is arranged between the lifting body 72 and the flame generator 73, and the rotating assembly 75 comprises a first rotating body 751 and a second rotating body 752. The first rotating body 751 comprises a first rotating motor 7511 and a connecting plate 7512, and a first accommodating groove is formed in the end part, close to the flame generator 73, of the lifting body 72. The first rotating motor 7511 is installed in the first accommodating groove through a bolt, the first rotating motor 7511 extends along the length direction of the lifting body 72, and the connecting plate 7512 is connected to an output shaft of the first rotating motor 7511 through a key. The second rotating body 752 comprises a second rotating motor 7521, a second accommodating groove is formed in the top surface of the connecting plate 7512, the second rotating motor 7521 is installed in the second accommodating groove through bolts, and the second rotating motor 7521 extends vertically.
Referring to fig. 4 and 5, flame gun body holder 732 extends in the horizontal direction, and one end of flame gun body holder 732 faces rotary table 2. Connecting plate 7512 is rotatably coupled to the bottom wall of flame gun body holder 732 via a bearing, and the output shaft of second rotating motor 7521 is coupled to the bottom wall of flame gun body holder 732 via a key. Feed servo cylinder 735 is mounted to the end of flame gun body carrier 732 adjacent to traverse servo cylinder 784, feed servo cylinder 735 and flame gun body carrier 732 being parallel to each other. The flame gun body 731 is mounted on the flame gun body bracket 732, the positive and negative igniters 734 are mounted on the flame gun body 731, and the positive and negative igniters 734, the flame gun body 731, and the flame gun body bracket 732 are parallel to each other. A coupling plate 737 is coupled to a piston rod end of the feed servo cylinder 735 by a screw, and a top wall of the coupling plate 737 is coupled to a bottom wall of the torch body 731 by a screw.
Referring to fig. 4, rollers 738 are pivotally connected to the top wall of feed servo cylinder 735 and the top wall of flame gun body carrier 732 through roller mounts, in this embodiment three rollers 738 are illustrated, one roller 738 is located at the end of flame gun body carrier 732 toward turntable 2, one roller 738 is located at the end of feed servo cylinder 735 near turntable 2, and one roller 738 is located at the end of feed servo cylinder 735 away from turntable 2. The bottom wall of the torch body 731 is provided with a rail along the longitudinal direction thereof for guiding the roller 738.
Referring to fig. 4, the gas flame nozzle 733 is installed at an end of the flame gun body 731 facing the rotary table 2, and the gas flame nozzle 733 is communicated with the flame gun body 731 to gather flames emitted from the flame gun body 731, thereby facilitating heating and calcining of the surface of the metal workpiece 9. A distance measuring sensor 76 is further installed at one end of the flame gun body bracket 732 close to the rotary table 2, and the distance measuring sensor 76 is used for detecting the distance between the gas flame nozzle 733 and the metal workpiece 9.
The flame gun body 731 is connected with the gas path system and the control system, and the first rotating motor 7511, the second rotating motor 7521, the feeding servo cylinder 735 and the positive and negative electrode igniters 734 are all connected with the control system.
The implementation principle of the embodiment 1 of the application is as follows:
the distance measuring sensor 76 detects the distance between the gas flame nozzle 733 and the metal workpiece 9, outputs a distance signal to a control system, the control system receives the distance signal, controls the traverse servo cylinder 784, the lifting servo cylinder 741, the gas circuit system, the positive and negative igniters 734, the feeding servo cylinder 735, the first rotary motor 7511, the second rotary motor 7521 and the motor 231 to work, drives the gas flame nozzle 733 to spray flame, drives the traverse servo cylinder 784 to push the flame nozzle to be close to the metal workpiece 9, drives the lifting servo cylinder 741 to drive the flame nozzle to be opposite to the metal workpiece 9, drives the feeding servo cylinder 735 to drive the distance between the gas flame nozzle 733 and the metal workpiece 9 to be finely adjusted, drives the first rotary motor 7511 to adjust the angle of the gas flame nozzle 733 in the vertical direction, drives the second rotary motor 7521 to adjust the angle of the gas flame nozzle 733 in the horizontal direction, drives the motor 231 to drive the rotary table 21 and the metal workpiece 9 to rotate, thereby facilitating the uniform calcination heating of all sides of the metal workpiece 9 during the rotation of the metal workpiece 9.
Example 2:
a control method using the constant-temperature heating apparatus for flame surface quenching disclosed in embodiment 1, comprising the steps of:
s1, determining the number of the flame generators 73 according to the shape of the metal workpiece 9;
s2, according to the shape of the metal workpiece 9, the control system calculates the distance to be moved according to a formula, and adjusts the distance between the flame generator 73 and the metal workpiece 9 in real time;
the above formula is: in the range of 0 ° ≦ 45 ° in the middle, γ = β c = a · sin in the middle, tan γ c = d = c γ e = a · cos in the middle, f = e-d = a · cos in the middle, c/tan γ = a · cos in the middle, (a · sin in the middle)/tan (in the middle), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle)/tan (in the middle) + β), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle of)/tan (in the middle of (the middle of) and (in the middle of) of (β) ])
=a-a·［cosØ-sinØ/tan(Ø+β）］=a·｛1-［cosØ-sinØ/tan(Ø+β）］｝；
Specifically, δ: the distance the flame generator 73 needs to move; in the middle: the angle of rotation of the metal workpiece 9; a: the distance from the initial machining point of the side edge of the metal workpiece 9 to the rotation center of the metal workpiece 9; b: the distance in the rotational direction between the end point adjacent to the initial machining point to the rotational center of the metal workpiece 9; c: after the metal workpiece 9 rotates by an angle, the distance between the initial processing point and the connecting line of the flame generator 73 and the rotation center of the metal workpiece 9; d: after the metal workpiece 9 rotates by an angle, the distance from the intersection point between the initial processing point and the connecting line of the flame generator 73 and the rotation center of the metal workpiece 9 to the intersection point between the flame generator 73 and the side edge of the metal workpiece 9; e: after the metal workpiece 9 rotates by an angle, the minimum distance between the initial processing point and the rotation center of the metal workpiece 9 is obtained; f: after the metal workpiece 9 rotates by an angle, the distance from the intersection point of the flame generator 73 and the side edge of the metal workpiece 9 to the rotation center of the metal workpiece 9; beta: an included angle between a connecting line of the initial processing point and the rotation center of the metal workpiece 9 and the adjacent side edge of the metal workpiece 9; γ: after the metal workpiece 9 rotates by an angle, the flame generator 73 forms an included angle between a connecting line of the rotating centers of the metal workpiece 9 and the side edge of the rotated metal workpiece 9;
s3, detecting the temperature of the metal workpiece 9 in real time by the temperature sensor 8, transmitting the detected real-time temperature to the control system, comparing the real-time temperature with the preset temperature by the control system, and controlling the flame generator 73 to process the metal workpiece 9 again when the real-time temperature is lower than the preset temperature;
and S4, cooling, namely after the metal workpiece 9 is heated to a preset temperature, controlling the lifting device 6 to drive the rotating table 21 to descend by the control system until the metal workpiece 9 is completely positioned below the liquid level of the cooling liquid in the quenching bath 1. The metal workpiece 9 may be an irregularly shaped metal workpiece or a regularly shaped polygonal metal workpiece, and the irregularly shaped metal workpiece is preferred in this embodiment.
The implementation principle of embodiment 2 of the present application is as follows: through the formula, the distance between the flame generator 73 and the metal workpiece 9 can be calculated, so that the distance that the flame generator 73 needs to move is determined, the distance between the fire outlet of the flame generator 73 and the side wall of the metal workpiece 9 to be calcined is constant, and the effect of uniformly heating the metal workpiece 9 is achieved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a constant temperature heating equipment for flame surface hardening, includes quenching bath (1) and installs swivel work head (2) in quenching bath (1), its characterized in that: the device also comprises a lifting device (6) for driving the rotary worktable (2) to lift, a spray gun device (7) for calcining the metal workpiece (9), a temperature sensor (8) arranged at the top of the quenching bath (1) and used for detecting the temperature of the metal workpiece (9) and a control system; the spray gun device (7) comprises a lifting frame (71) arranged at the top of the quenching bath (1), a transverse moving assembly (78) used for driving the lifting frame (71) to move along the horizontal direction, a lifting body (72) connected to the lifting frame (71) in a vertical sliding manner, a flame generator (73) arranged on the lifting body (72), a lifting assembly (74) used for driving the lifting body (72) to move along the vertical direction, a rotating assembly (75) used for driving the angle of the flame generator (73) to change, and a distance measuring sensor (76) arranged at one end, close to the metal workpiece (9), of the flame generator (73); the rotary workbench (2), the lifting device (6), the temperature sensor (8), the transverse moving assembly (78), the flame generator (73), the lifting assembly (74), the rotating assembly (75) and the distance measuring sensor (76) are all connected with a control system.
2. The constant-temperature heating apparatus for flame surface quenching as claimed in claim 1, wherein: the rotating assembly (75) comprises a first rotating body (751) and a second rotating body (752), the first rotating body (751) comprises a first rotating motor (7511) horizontally installed at the end part of the lifting body (72) and a connecting plate (7512) fixedly connected to an output shaft of the first rotating motor (7511), the second rotating body (752) comprises a second rotating motor (7521) vertically installed in the connecting plate (7512), and the output shaft of the second rotating motor (7521) is connected with the bottom wall of the flame generator (73); and the first rotating motor (7511) and the second rotating motor (7521) are both connected with a control system.
3. The constant-temperature heating apparatus for flame surface quenching as claimed in claim 1, wherein: the lifting assembly (74) comprises a lifting servo oil cylinder (741) and a lifting linear guide rail pair (742), the lifting servo oil cylinder (741) is vertically installed at the top of the lifting frame (71), the piston rod end of the lifting servo oil cylinder (741) is hinged to the side wall of the lifting body (72), the lifting linear guide rail pair (742) is vertically installed on the opposite side walls of the lifting frame (71) and the lifting body (72), and the lifting servo oil cylinder (741) is connected with a control system; and the lifting frame (71) is also provided with a limit component (77) for controlling the stroke of the lifting body (72).
4. The constant-temperature heating apparatus for flame surface quenching according to claim 3, characterized in that: the limit assembly (77) comprises a first limit switch (771) and a second limit switch (772), the first limit switch (771) is installed at the bottom end of the lifting frame (71), the second limit switch (772) is installed at the top end of the lifting frame (71), and the first limit switch (771) and the second limit switch (772) are both connected with the control system.
5. The constant-temperature heating apparatus for flame surface quenching as claimed in claim 1, wherein: the transverse moving assembly (78) comprises a transverse moving seat (781), a transverse moving oil cylinder seat (782), a transverse moving linear guide rail pair (783) and a transverse moving servo cylinder (784), wherein the transverse moving seat (781) is installed at the top of the quenching pool (1) and extends along the horizontal direction, the transverse moving oil cylinder seat (782) is fixedly connected to the bottom end of the lifting frame (71), the cylinder body of the transverse moving servo cylinder (784) is installed at one end, close to the outer side of the quenching pool (1), of the transverse moving seat (781), the piston rod of the transverse moving servo cylinder (784) extends towards the middle of the quenching pool (1) and is fixedly connected to the side wall of the transverse moving oil cylinder seat (782), the transverse moving linear guide rail pair (783) is installed at the opposite side walls of the transverse moving seat (781) and the transverse moving oil cylinder seat (782) along the horizontal direction, and the transverse moving servo cylinder (784) is connected with a control system.
6. The constant-temperature heating apparatus for flame surface quenching according to claim 5, characterized in that: the cylinder body of the transverse moving servo cylinder (784) is hinged to one end, close to the outer side of the quenching bath (1), of the transverse moving seat (781), and a piston rod of the transverse moving servo cylinder (784) is hinged to the side wall of the transverse moving oil cylinder seat (782).
7. The constant-temperature heating apparatus for flame surface quenching as claimed in claim 1, wherein: the rotary working table (2) comprises a rotary table (21), a lifting plate (22) for mounting the rotary table (21) and a driving assembly (23) for driving the rotary table (21) to rotate; the lifting device (6) comprises a supporting column (61), a double-output-shaft oil cylinder (62), two first tightening wheels (63), two second tightening wheels (64) and a traction rope (65), the supporting column (61) is provided with two supporting columns (61) which are arranged on two sides in the quenching tank (1) at intervals, the supporting column (61) is vertically arranged, the first tightening wheels (63) are arranged at the piston rod end of the double-output-shaft oil cylinder (62), the second tightening wheels (64) are arranged at the end part of the lifting plate (22), the first reversing wheels (66) are arranged on the inner bottom wall of the quenching tank (1), the second reversing wheels (67) are arranged at the top end of the supporting column (61), one end of the traction rope (65) is fixedly connected to the first tightening wheels (63), and the other end of the traction rope (65) sequentially penetrates through the first reversing wheels (66), the second reversing wheels (67) and is fixedly connected to the second tightening wheels (64), and the double-output-shaft oil cylinder (62) is connected with a control system.
8. The constant-temperature heating apparatus for flame surface quenching according to claim 7, characterized in that: the driving assembly (23) comprises a motor (231), a rotating shaft (233), a transmission shaft (232), a first transmission gear (234) and a second transmission gear (235), the rotating shaft (233) is rotatably connected to the lifting plate (22), the rotating shaft (233) is vertically arranged and the top end of the rotating shaft (233) is fixedly connected to the center of the bottom of the rotating platform (21), the transmission shaft (232) is rotatably connected to the lifting plate (22), the transmission shaft (232) is located on one side of the rotating shaft (233), the motor (231) is installed in the lifting plate (22), the output shaft of the motor (231) is fixedly connected with the bottom end of the transmission shaft (232), the top end of the transmission shaft (232) extends to the outer side of the lifting plate (22) and is fixedly connected with the first transmission gear (234), the second transmission gear (235) is sleeved on the side wall of the rotating shaft (233), and the first transmission gear (234) is meshed with the second transmission gear (235), the motor (231) is connected to a control system.
9. A control method using the constant temperature heating apparatus for flame surface quenching according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, determining the number of flame generators (73) according to the shape of the metal workpiece (9);
s2, according to the shape of the metal workpiece (9), the control system calculates the distance of the flame generator (73) to be moved according to a formula, and adjusts the distance between the flame generator (73) and the metal workpiece (9) in real time;
the formula is: in the range of 0 ° ≦ 45 ° in the middle, γ = β c = a · sin in the middle, tan γ c = d = c γ e = a · cos in the middle, f = e-d = a · cos in the middle, c/tan γ = a · cos in the middle, (a · sin in the middle)/tan (in the middle), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle)/tan (in the middle) + β), δ = a-f = a- [ a · cos in the middle of (a · sin in the middle of)/tan (in the middle of (the middle of) and (in the middle of) of (β) ])
=a-a·［cosØ-sinØ/tan(Ø+β）］=a·｛1-［cosØ-sinØ/tan(Ø+β）］｝；
δ: the distance the flame generator (73) needs to be moved; in the middle: the angle of rotation of the metal workpiece (9); a: the distance between the initial machining point of the side edge of the metal workpiece (9) and the rotation center of the metal workpiece (9); b: a distance along the rotation direction between an end point adjacent to the initial machining point to a rotation center of the metal workpiece (9); c: after the metal workpiece (9) rotates by an angle, the distance between an initial processing point and a connecting line of the flame generator (73) and the rotation center of the metal workpiece (9) is increased; d: after the metal workpiece (9) rotates by an angle, the distance from the intersection point between the initial processing point and the connecting line of the rotation centers of the flame generator (73) and the metal workpiece (9) to the intersection point between the flame generator (73) and the side edge of the metal workpiece (9) is increased; e: after the metal workpiece (9) rotates by an angle, the minimum distance between the initial processing point and the rotation center of the metal workpiece (9) is obtained; f: after the metal workpiece (9) rotates by an angle, the distance between the intersection point of the flame generator (73) and the side edge of the metal workpiece (9) and the rotation center of the metal workpiece (9) is increased; beta: an included angle between a connecting line of the initial processing point and the rotation center of the metal workpiece (9) and the adjacent side edge of the metal workpiece (9); γ: after the metal workpiece (9) rotates by an angle, the flame generator (73) and a connecting line of the rotation center of the metal workpiece (9) form an included angle with the side edge of the rotated metal workpiece (9);
s3, detecting the temperature of the metal workpiece (9) in real time by the temperature sensor (8), transmitting the detected real-time temperature to the control system, comparing the real-time temperature with a preset temperature by the control system, and controlling the flame generator (73) to continuously calcine the metal workpiece (9) when the real-time temperature is lower than the preset temperature by the control system;
and S4, cooling, namely, after the metal workpiece (9) is heated to a preset temperature, controlling the lifting device (6) to drive the rotating table (21) to descend by the control system until the metal workpiece (9) is completely positioned below the liquid level of the cooling liquid in the quenching bath (1).
10. The control method of a thermostatic heating apparatus for flame surface quenching according to claim 9, characterized in that: the metal workpiece (9) is an irregular metal workpiece.
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| CN202116599U (en) * | 2011-05-21 | 2012-01-18 | 山西育龙教学设备有限公司 | Full-automatic flame quenching machine tool |
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