Quenching equipment for metal heat treatment

Abstract

The invention discloses quenching equipment for metal heat treatment, and belongs to the technical field of metal quenching, the quenching equipment comprises a quenching treatment table, a mounting chamber is arranged on the quenching treatment table, a laser quenching device is arranged on the mounting chamber, a water storage cavity is arranged in the mounting chamber, and a water circulation assembly is arranged in the water storage cavity; a heat insulation cooling semi-ring body connected with the water circulation assembly is arranged on one side of the installation chamber, a quenching pretreatment device is arranged on the heat insulation cooling semi-ring body, a quenching position opening is formed in the heat insulation cooling semi-ring body, and a wave absorbent cotton layer is arranged in the quenching position opening. The gear ring is driven to slowly rotate for transverse rotation quenching while the arc-shaped abutting seat is controlled by adjusting the abutting assembly to fix the gear ring, and heat isolation is performed on the part subjected to laser quenching through cooling circulating water arranged at a quenching position opening, so that the heat is prevented from being transferred to a hole of a gear ring body, and the quenching quality of the gear ring is improved. And the condition that the metal at the hole is heated and denatured is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal quenching, and in particular to a quenching device for metal heat treatment. Background Art

[0002] Laser quenching is a quenching technology that uses laser to heat the material surface to above the phase transition point. As the material itself cools, the austenite transforms into martensite, thereby hardening the material surface.

[0003] Laser quenching is often used in the quenching process of gears. Laser quenching tooth surfaces has fast heating and cooling speeds, short process cycles, and does not require external quenching media. It has the advantages of small workpiece deformation, clean working environment, and no need for finishing such as gear grinding after processing.

[0004] A gear ring is a commonly used gear, which is drilled with holes for installing the gear ring. The holes of some gear rings with limited sizes are very close to the teeth. In order to avoid quenching the holes, which will increase their strength, reduce their plasticity, and affect their connection and fastening performance, laser is often used to quench the tooth surface. The current laser quenching methods include vertical tooth quenching one by one and horizontal rotation quenching. When vertical laser quenching is performed one by one on a single tooth of a gear, the tooth will be heated by the laser for a long time, and some holes close to the tooth will be heated by the conducted temperature, affecting the connection and fastening performance of the hole; when performing horizontal rotation quenching, the tooth and the tooth groove have the same contact time during the uniform rotation process, and the tooth groove will also be heated for a long time, which will also cause changes in the metal properties at the hole. In addition, the heating of the tooth groove of the gear will cause the tooth root to be quenched, affecting the plasticity of the tooth root, so that the quenched tooth is extremely easy to break, affecting the quality. Based on this, a quenching device for metal heat treatment is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when performing vertical laser quenching on a single tooth of a gear one by one, the tooth will be under laser heating for a long time, and some holes close to the tooth will be heated by the conducted temperature, affecting the connection and fastening performance of the hole; when performing horizontal rotation quenching, the contact time between the tooth and the tooth groove is the same during the uniform rotation process, the tooth groove will also be heated for a long time, and the metal properties at the hole will also change, thereby proposing a quenching equipment for metal heat treatment.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A quenching device for metal heat treatment, comprising a quenching treatment table, an installation room is arranged on the quenching treatment table, a laser quenching device is arranged on the installation room, a water storage cavity is arranged inside the installation room, a water circulation component is arranged in the water storage cavity, a heat-insulating cooling semi-ring body connected to the water circulation component is arranged on one side of the installation room, a quenching pretreatment device is arranged on the heat-insulating cooling semi-ring body, a quenching position opening is opened on the heat-insulating cooling semi-ring body, a wave water-absorbing cotton layer is arranged in the quenching position opening, and a baffle component is arranged at the quenching position opening; The quenching treatment table is provided with a driving table, a driving main motor is provided in the driving table, a rotating disk is rotatably connected above the driving table, a blocking member is provided on the outer side wall of the rotating disk, the rotating disk is connected with a plurality of arc-shaped abutment seats through a telescopic member, and the driving main motor controls the movement of the arc-shaped abutment seats by adjusting the abutment assembly; The baffle assembly comprises a baffle disc driven by a driving assembly, and a plurality of baffle plates are evenly arranged on an outer side wall of the baffle disc.

[0007] Preferably, the water circulation component includes a water delivery cavity opened in the water storage cavity, a turbine disk is arranged in the water delivery cavity, a cooling pipe layer connected to the water storage cavity is arranged on one side of the installation chamber, and the interior of the heat-insulating cooling semi-ring body is hollow, and its two ends are respectively connected to the water delivery cavity and the cooling pipe layer.

[0008] Preferably, the quenching pretreatment device includes a high-frequency vibrator arranged on a quenching treatment table, and the side walls of the heat-insulating cooling semi-ring body located on both sides of the quenching position are provided with connecting supports, and the connecting supports are connected to a cleaning disk through a vertical axis, and the outer wall of the cleaning disk is provided with a cleaning tooth part, and the output end of the high-frequency vibrator is connected to the vertical axis.

[0009] Preferably, the blocking member comprises a clamping ring fixedly arranged on the driving platform, and a telescopic clamping block adapted to the clamping ring is movably arranged on the outer side wall of the rotating disk.

[0010] Preferably, the telescopic member comprises a telescopic cover body fixedly arranged on the outer side wall of the rotating disk, the arc-shaped abutment seat is fixedly connected with a telescopic rod, and the end of the telescopic rod is located in the telescopic cover body.

[0011] Preferably, the adjustment resistance assembly includes a vertical lead screw extending upward from the output end of the driving main motor and fixedly connected thereto, the vertical lead screw being connected to an adjustment disk via a lead screw nut ring, the outer side wall of the adjustment disk being rotatably connected to a resistance adjustment rod, and a U-shaped connecting block being rotatably connected to the resistance adjustment rod being provided on the back of the arc-shaped resistance seat.

[0012] Preferably, the drive assembly includes a constant speed motor arranged in the drive platform, the output end of the constant speed motor is fixedly connected to a transverse drive shaft, the outer wall of the transverse drive shaft extends outward through the water delivery cavity and is fixedly connected to the baffle plate, and the turbine plate is fixedly connected to the outer wall of the transverse drive shaft.

[0013] Preferably, the arc-shaped abutment seat is arranged in an "L" shape, and a rubber layer for increasing friction is arranged on the surface of the arc-shaped abutment seat.

[0014] Preferably, the baffle plate is provided with a coating for refracting laser light.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The laser quenching equipment proposed in the present invention, when quenching the gear ring, fixes the gear ring by adjusting the interference assembly to control the arc-shaped interference seat, and drives the gear ring to slowly rotate for lateral rotation quenching. The cooling circulating water arranged at the quenching position is used to isolate the heat of the laser quenching part, thereby preventing heat from being transferred to the holes of the gear ring body, and preventing the metal in the holes from being thermally denatured.

[0016] 2. The present invention provides a baffle plate and a baffle plate at the straight position between the laser quenching device and the quenching position. The baffle plate rotates to drive the baffle plate to intermittently block and refract the laser, so that the laser cannot be quenched when the gear rotates to the tooth groove, and only quenches the tooth. While ensuring the improvement of the tooth hardness and wear resistance, it can also avoid the increase of the hardness of the tooth root due to the quenching of the tooth groove, resulting in easy breakage, thereby significantly improving the quenching quality of the gear ring.

[0017] 3. The present invention provides quenching pretreatment devices on both sides of the quenching position, and drives the cleaning disk to rotate by rotating the gear ring, so that the cleaning tooth parts thereon come into contact with the teeth to be quenched and after quenching, which can effectively realize vibration cleaning of the quenching part, ensure the clean surface of the quenching part, and improve the quenching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a quenching device for metal heat treatment proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 This is a schematic diagram of the assembly structure of an installation chamber in a quenching device for metal heat treatment proposed by the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of an installation chamber in a quenching device for metal heat treatment proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a driving platform in a quenching device for metal heat treatment proposed by the present invention; Figure 6 The present invention is a schematic diagram of the internal structure of an installation chamber in a quenching device for metal heat treatment proposed by the present invention.

[0019] In the figure: 1. quenching table; 2. installation room; 3. laser quenching device; 4. water storage chamber; 5. heat insulation cooling semi-ring; 6. quenching position port; 7. driving table; 8. driving main motor; 9. rotating disk; 10. water delivery chamber; 11. arc-shaped conflict seat; 12. baffle plate; 13. baffle plate; 14. turbine disk; 15. cooling pipe layer; 16. high-frequency vibrator; 17. connecting support; 18. cleaning disk; 19. cleaning tooth parts; 20. retaining ring; 21. telescopic block; 22. telescopic cover; 23. U-shaped connecting block; 24. vertical screw; 25. adjusting disk; 26. conflict adjustment rod; 27. constant speed motor; 28. horizontal driving shaft. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example, see Figures 1 to 6A quenching device for metal heat treatment includes a quenching treatment table 1, a mounting chamber 2 is provided on the quenching treatment table 1, a laser quenching device 3 is provided on the mounting chamber 2, the laser quenching device 3 is a prior art and will not be described in detail herein, a water storage chamber 4 is provided inside the mounting chamber 2, a water circulation component is provided in the water storage chamber 4; Furthermore, the water circulation component includes a water delivery chamber 10 opened in the water storage chamber 4, and a turbine disc 14 is arranged in the water delivery chamber 10. When the turbine disc 14 rotates, it will generate power for the cooling water in the water storage chamber 4, so as to circulate the cooling water; A cooling pipe layer 15 connected to the water storage chamber 4 is provided on one side of the installation chamber 2. The cooling pipe layer 15 is distributed in an "S" shape and is in direct contact with the outside world, which can achieve an effective heat dissipation effect. The interior of the heat-insulating cooling semi-ring body 5 is hollow, and its two ends are respectively connected to the water delivery chamber 10 and the cooling pipe layer 15.

[0024] A heat-insulating cooling semi-ring 5 connected to a water circulation assembly is provided on one side of the installation chamber 2, and a quenching pretreatment device is provided on the heat-insulating cooling semi-ring 5; Furthermore, the quenching pretreatment device includes a high-frequency vibrator 16 arranged on the quenching treatment table 1. The high-frequency vibrator 16 is a prior art and will not be described in detail herein. The side walls of the heat-insulating cooling semi-ring body 5 located on both sides of the quenching position mouth 6 are provided with a connecting support 17, and the connecting support 17 is connected to a cleaning disk 18 through a vertical axis. The outer wall of the cleaning disk 18 is provided with a cleaning tooth piece 19, and the output end of the high-frequency vibrator 16 is connected to the vertical axis.

[0025] The cleaning tooth piece 19 arranged on the cleaning disk 18 is meshed with the gear ring to be quenched. When the cleaning tooth piece 19 contacts the teeth on the gear ring to be quenched, the teeth can be effectively cleaned.

[0026] It should be noted that quenching pretreatment devices are provided on both sides of the quenching position opening 6. When the gear ring to be quenched rotates clockwise during quenching, the first quenching pretreatment device it contacts plays a role in vibrating and cleaning the teeth of the gear ring to be quenched, so as to ensure the cleanliness of the quenching position during quenching. The second quenching pretreatment device that contacts the gear after quenching can effectively clean the impurities on the quenched tooth part of the gear after quenching, thereby achieving the effect of quenching slag removal.

[0027] A quenching position opening 6 is provided on the heat-insulating cooling semi-ring body 5, and a wave absorbent cotton layer is provided in the quenching position opening 6. The height of the wave absorbent cotton layer is higher than the quenching position opening 6, which can ensure that when the gear ring to be quenched is at the quenching position opening 6, the wave absorbent cotton layer can fully contact with the bottom of the gear ring to be quenched, so as to achieve effective heat dissipation of the contact part of the gear ring to be quenched. A baffle assembly is provided at the quenching position opening 6; A driving platform 7 is arranged on the quenching treatment table 1, and a driving main motor 8 is arranged inside the driving platform 7. A rotating disk 9 is rotatably connected above the driving platform 7, and a blocking member is arranged on the outer wall of the rotating disk 9. Further, the blocking member includes a clamping ring 20 fixedly arranged on the driving platform 7, and a telescopic clamping block 21 adapted to the clamping ring 20 is movably arranged on the outer wall of the rotating disk 9.

[0028] The setting of the blocking member is designed to meet the need to fix the hardened gear ring by adjusting the interference assembly. When the blocking member is opened, the rotating disk 9 cannot rotate, thereby limiting the rotation of the interference adjustment rod 26 connected thereto, and ensuring that the adjustment disk 25 moves up and down when the vertical screw 24 rotates.

[0029] The rotating disk 9 is connected to a plurality of arc-shaped abutment seats 11 through telescopic parts. The arc-shaped abutment seats 11 are arranged in an "L" shape, and a rubber layer for increasing friction is arranged on the surface of the arc-shaped abutment seats 11.

[0030] Furthermore, the telescopic member includes a telescopic cover body 22 fixedly arranged on the outer side wall of the rotating disk 9 , and the arc-shaped abutment seat 11 is fixedly connected with a telescopic rod, and the end of the telescopic rod is located in the telescopic cover body 22 .

[0031] The driving main motor 8 controls the movement of the arc-shaped interference seat 11 by adjusting the interference assembly; further, the adjusting interference assembly includes a vertical lead screw 24 extending upward from the output end of the driving main motor 8 and fixedly connected thereto, the vertical lead screw 24 is connected to an adjusting disk 25 through a lead screw nut ring, the outer side wall of the adjusting disk 25 is rotatably connected to a interference adjusting rod 26, and a U-shaped connecting block 23 rotatably connected to the interference adjusting rod 26 is provided on the back of the arc-shaped interference seat 11.

[0032] The advantage of adopting the above structure is that when the gear ring to be quenched is installed, the quenched gear ring is placed on the arc-shaped interference seat 11. At this time, the rotation of the rotating disk 9 is limited by the blocking piece, and the main motor 8 is started to drive the vertical screw 24 connected to it to rotate. The adjustment disk 25 connected to it through the screw nut ring will move downward during rotation, driving the interference adjustment rod 26 to drive the arc-shaped interference seat 11 to move outward, thereby effectively supporting the gear ring to be quenched, and when it is necessary to drive the gear ring to be quenched to rotate, the rotation can be achieved by driving the main motor 8 to rotate.

[0033] Furthermore, the driving assembly includes a constant speed motor 27 arranged in the driving platform 7, and the output end of the constant speed motor 27 is fixedly connected to a transverse driving shaft 28. The outer wall of the transverse driving shaft 28 extends outward through the water delivery cavity 10 and is fixedly connected to the baffle plate 12. The turbine plate 14 is fixedly connected to the outer wall of the transverse driving shaft 28.

[0034] The baffle assembly includes a baffle disc 12 driven by a driving assembly. A plurality of baffle plates 13 are evenly arranged on the outer side wall of the baffle disc 12. The baffle plates 13 are provided with a coating for refracting laser light.

[0035] Through the precise control of the constant speed motor 27, during the rotation of the gear ring to be quenched, the baffle plate 12 will not block the laser at the tooth. When the tooth groove does not need to be quenched, the baffle plate 13 on the baffle plate 12 just rotates to the corresponding position, thereby blocking the laser and ensuring that the tooth groove will not be quenched during quenching, thereby ensuring the plastic strength of the entire tooth.

[0036] When quenching the teeth of the gear ring, the present invention places the gear ring on the arc-shaped interference seat 11, limits the rotation of the rotating disk 9 by means of the blocking piece, starts the driving main motor 8, and rotates the vertical lead screw 24 connected thereto, and the adjusting disk 25 connected thereto by means of the lead screw nut ring moves downward during rotation, driving the interference adjustment rod 26 to drive the arc-shaped interference seat 11 to move outward, until the inner support of the gear ring is fixed on the multiple arc-shaped interference seats 11. At this time, the position of the gear ring for quenching will be at the quenching position opening 6 of the heat-insulating cooling semi-ring body 5, the ring body position of the gear ring will be directly above the quenching position opening 6, and will contact the wavy water-absorbing cotton layer in the quenching position opening 6, the tooth position is on the inner side of the heat-insulating cooling semi-ring body 5, and will not directly contact the teeth of the gear ring to be tested when circulating through water, thereby realizing accurate positioning of the laser quenching position of the gear ring; During quenching, the main motor 8 is driven to drive the gear ring to rotate slowly, and the laser quenching device 3 can realize accurate quenching of the tooth part on the rotating gear ring. During the quenching process, the surface of the tooth quickly heats up, and its temperature is transmitted to the position of the gear ring body. At this time, the wave absorbent cotton layer arranged at the bottom of the gear ring body and located at the heat-insulating cooling semi-ring body 5 can isolate the temperature, and the temperature cannot be transmitted to the hole position on the gear ring body, thereby effectively preventing the hole from being affected by heat; During laser quenching, the baffle plate 12 connected to the constant speed motor 27 will be driven to rotate. During the rotation, the baffle plate 13 on the baffle plate 12 will rotate. During the rotation, when the baffle plate 13 rotates to the upper side to block the laser, the laser quenching position of the gear ring to be quenched is just at the tooth groove. Therefore, when the gear ring is quenched, the tooth groove of the gear will not be quenched, thereby avoiding the situation where the hardness increases and the toughness decreases due to the quenching of the tooth root, thereby ensuring the quality of the gear ring gear quenching.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quenching device for metal heat treatment, comprising a quenching table (1), wherein the quenching table (1) is provided with a mounting chamber (2), wherein the mounting chamber (2) is provided with a laser quenching device (3), characterized in that: A water storage chamber (4) is provided inside the installation chamber (2), a water circulation component is provided inside the water storage chamber (4), a heat-insulating cooling semi-ring body (5) connected to the water circulation component is provided on one side of the installation chamber (2), a quenching pretreatment device is provided on the heat-insulating cooling semi-ring body (5), a quenching position opening (6) is provided on the heat-insulating cooling semi-ring body (5), a wave-shaped water-absorbing cotton layer is provided inside the quenching position opening (6), and a baffle component is provided at the quenching position opening (6); The quenching treatment table (1) is provided with a driving table (7), a driving main motor (8) is provided in the driving table (7), a rotating disk (9) is rotatably connected to the top of the driving table (7), a blocking member is provided on the outer wall of the rotating disk (9), the rotating disk (9) is connected to a plurality of arc-shaped abutment seats (11) via telescopic members, and the driving main motor (8) controls the movement of the arc-shaped abutment seats (11) by adjusting the abutment assembly; The baffle assembly comprises a baffle disc (12) driven by a driving assembly, and a plurality of baffle plates (13) are evenly arranged on the outer side wall of the baffle disc (12).

2. A quenching equipment for metal heat treatment according to claim 1, characterized in that: The water circulation component comprises a water delivery chamber (10) opened in a water storage chamber (4), a turbine disc (14) being arranged in the water delivery chamber (10), a cooling pipe layer (15) communicating with the water storage chamber (4) being arranged on one side of the installation chamber (2), and the interior of the heat-insulating cooling semi-ring body (5) is hollow, and its two ends are respectively communicated with the water delivery chamber (10) and the cooling pipe layer (15).

3. A quenching equipment for metal heat treatment according to claim 1, characterized in that: The quenching pretreatment device comprises a high-frequency vibrator (16) arranged on a quenching treatment table (1); the side walls of the heat-insulating cooling semi-ring body (5) located on both sides of the quenching position opening (6) are provided with connecting supports (17); the connecting supports (17) are connected to a cleaning disk (18) via a vertical axis; the outer side wall of the cleaning disk (18) is provided with a cleaning tooth piece (19); and the output end of the high-frequency vibrator (16) is connected to the vertical axis.

4. A quenching equipment for metal heat treatment according to claim 1, characterized in that: The blocking member comprises a clamping ring (20) fixedly arranged on the driving platform (7), and a telescopic clamping block (21) adapted to the clamping ring (20) is movably arranged on the outer side wall of the rotating disk (9).

5. The quenching equipment for metal heat treatment according to claim 1, characterized in that: The telescopic member comprises a telescopic cover body (22) fixedly arranged on the outer side wall of the rotating disk (9); the arc-shaped abutment seat (11) is fixedly connected to a telescopic rod, and the end of the telescopic rod is located in the telescopic cover body (22).

6. The quenching equipment for metal heat treatment according to claim 1, characterized in that: The adjusting and resisting assembly comprises a vertical lead screw (24) extending upward from the output end of the driving main motor (8) and fixedly connected thereto; the vertical lead screw (24) is connected to an adjusting disk (25) via a lead screw nut ring; an outer side wall of the adjusting disk (25) is rotatably connected to a resisting and adjusting rod (26); and a U-shaped connecting block (23) rotatably connected to the resisting and adjusting rod (26) is disposed on the back of the arc-shaped resisting seat (11).

7. A quenching equipment for metal heat treatment according to claim 2, characterized in that: The drive assembly comprises a constant speed motor (27) disposed in a drive platform (7); an output end of the constant speed motor (27) is fixedly connected to a transverse drive shaft (28); an outer side wall of the transverse drive shaft (28) penetrates the water delivery cavity (10) to extend outwards and is fixedly connected to the baffle plate (12); and the turbine plate (14) is fixedly connected to the outer side wall of the transverse drive shaft (28).

8. The quenching equipment for metal heat treatment according to claim 1, characterized in that: The arc-shaped abutment seat (11) is arranged in an "L" shape, and a rubber layer for increasing friction is arranged on the surface of the arc-shaped abutment seat (11).

9. The quenching equipment for metal heat treatment according to claim 1, characterized in that: The baffle plate (13) is provided with a coating for refracting laser light.

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