An adjustable gear ring die-cutting and quenching mechanism

Abstract

This invention discloses an adjustable gear ring die-forming and quenching mechanism, comprising an inner ring die assembly, an outer ring die assembly, an upper die assembly, and a base plate. The inner ring die assembly is used to fix and press the inner ring of the gear ring; the outer ring die assembly is used to press the outer ring of the gear ring and, in conjunction with the inner ring die assembly, controls the deformation of the gear ring; the upper die assembly is used to press the tooth surface of the opposing gear to control tooth surface deformation; the base plate supports the part, the inner ring die, and the outer ring die. This invention, through the coordinated design of the inner ring die assembly, the outer ring die assembly, and the upper die assembly, achieves positioning and clamping of different gear parts. It can not only adapt to the clamping of parts of various sizes and shapes but also reduces the design and manufacturing of die-forming tooling. The entire die-forming and quenching process is highly automated, simple to operate, and has high control precision, significantly improving the die-forming and quenching efficiency of gear and gear ring parts.

Description

Technical Field

[0001] This invention belongs to the field of heat treatment of metal parts, and relates to gear ring quenching technology, specifically to an adjustable gear ring die-forming quenching mechanism. Background Technology

[0002] With the development of manufacturing, face gears and gear rings are increasingly widely used in the industry. Face gears and gear rings typically have high requirements for dimensional accuracy; therefore, controlling the deformation of parts is becoming increasingly important. Heat treatment deformation is the most significant factor affecting gear accuracy, and among these, quenching deformation is the key factor in heat treatment deformation.

[0003] Generally, manual immersion in quenching oil is insufficient to meet the requirements for quenching deformation. Currently, face gears or gear rings often use pressure molds to press the easily deformable surfaces to reduce quenching deformation. However, for face gears or gear rings with inconsistent sizes and shapes, the design and manufacture of the pressure mold tooling are usually based on the part size. Considering the high cost, low pressure control accuracy, poor versatility, and inconvenient installation of these molds, their large-scale adoption is often not feasible. These factors all increase the manufacturing cost of face gears or gear rings, consume a significant amount of time, and reduce production efficiency.

[0004] Therefore, a new technical solution is needed to address the problems of low efficiency, low precision, and poor adaptability of the die-casting quenching device for face gear ring parts. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of existing die-forming quenching equipment, such as low control deformation accuracy, low efficiency and poor adaptability, an adjustable face gear ring die-forming quenching mechanism is provided.

[0006] Technical solution: To achieve the above objectives, the present invention provides an adjustable gear ring die-forming and quenching mechanism, comprising an inner ring die assembly, an outer ring die assembly, an upper die assembly, and a base plate;

[0007] The inner ring molding assembly is used to fix and press the inner ring of the gear ring.

[0008] The outer ring die assembly is used to apply pressure to the outer ring of the gear ring, and works with the inner ring die assembly to control the deformation of the gear ring.

[0009] The upper pressure mold assembly is used to apply pressure to the tooth surface of the gear to control tooth surface deformation;

[0010] The base plate is used to support the parts, the inner ring mold and the outer ring mold, and is fixedly connected to the liftable quenching pool.

[0011] Furthermore, the inner ring molding assembly includes a top core and an inner pressure ring. The top core passes through the inner ring of the inner pressure ring. The inner pressure ring is radially provided with a plurality of inner pressure ring square holes and an inner ring pressure head that fits into the inner pressure ring square holes. The inner end of the inner ring pressure head is provided with a wedge block that cooperates with the top core, and the outer end is used to abut against the inner ring of the gear ring to apply a radial force from the inside to the outside to the gear ring.

[0012] Furthermore, the inner ring pressure mold assembly also includes a reset mechanism, which includes a reset connecting rod collar sleeved on the top core and several reset connecting rods. One end of the reset connecting rod is connected to the reset connecting rod collar, and the other end is engaged with the outer end of the inner ring pressure head. The reset connecting rod is used to pull the inner ring pressure head to reset after quenching.

[0013] Furthermore, the inner pressure ring is provided with a plurality of first height adjusting bolts, which are used to adjust the height of the inner pressure ring and the inner ring pressure head.

[0014] Furthermore, the outer ring pressure mold assembly includes an outer pressure ring and a plurality of outer ring pressure heads. The outer pressure ring has a plurality of outer pressure ring inner cavities arranged radially inside. An outer pressure ring inner hole is opened between the outer pressure ring inner cavity and the inner ring of the outer pressure ring. The outer ring pressure heads are fitted inside the outer pressure ring inner cavity and extend outward through the outer pressure ring inner hole. An oil inlet and an oil outlet are respectively provided on the outer ring of the outer pressure ring at the outer pressure ring inner cavity.

[0015] Furthermore, the outer ring of the hydraulic cylinder is equipped with a one-way valve, a relief valve, and a solenoid valve for regulating the oil in the two inlet and outlet pipelines.

[0016] Furthermore, a return spring and a sealing washer are provided inside the outer pressure ring cavity. The return spring is fitted onto the outer ring pressure head, and a sealing washer is provided between the outer ring pressure head and the inner hole of the outer pressure ring.

[0017] Furthermore, the outer pressure ring is provided with a plurality of second height adjusting bolts, which are used to adjust the height of the outer pressure ring and the outer ring pressure head.

[0018] Furthermore, the upper pressure mold assembly includes an upper pressure plate and an upper pressure ring disposed below the upper pressure plate. The upper pressure plate is sleeved on the top core to bear the power of the hydraulic device and transmit the power to the upper pressure ring. The upper pressure ring is used to press the tooth surface of the gear part.

[0019] Furthermore, the upper pressure ring has multiple sizes for pressing face gear parts with different inner and outer diameters, and the upper pressure plate has multiple through holes for cooperating with upper pressure rings of different sizes to press parts of different sizes.

[0020] Furthermore, the base plate is provided with a plurality of base plate oil inlet holes and oil control bolts provided on the base plate oil inlet holes, the oil control bolts being used to control the amount of oil entering the plate;

[0021] The base plate has several bolt holes and fastening bolts installed in the bolt holes. The base plate is fixedly connected to the quenching lifting device by the fastening bolts.

[0022] Furthermore, the base plate is provided with stepped grooves that match the outer pressure ring, inner pressure ring, and top core. The stepped grooves are used to position the outer pressure ring, inner pressure ring, and top core.

[0023] The basic principle of this invention is that a hydraulic cylinder pushes a top core, which, through a top core hole in the base plate, keeps the entire top core perpendicular to the base plate. As the top core presses down further, it forces the inner ring pressure head to move horizontally outward along the square hole of the inner ring pressure mold under the action of the top core, thereby pressing the inner ring of the part. Simultaneously, the hydraulic cylinder is connected to the oil inlet and outlet of the outer pressure ring through a pipeline. The solenoid valve remains closed, and hydraulic oil enters the outer pressure ring unidirectionally through the oil inlet and check valve. With the relief valve at the oil outlet, the oil pressure can be precisely controlled, causing the outer ring pressure head to extend outward under the hydraulic oil pressure, thereby pressing the outer ring of the part. The inner and outer pressure modules work together to press the gear ring part. After quenching, the inner pressure mold assembly pulls the top core... The core, which is fixed to the top core, pulls the reset link, causing the inner ring pressure head to move inward and reset. The outer pressure mold assembly opens the oil outlet solenoid valve, and under the action of oil pressure, most of the hydraulic oil in the outer pressure ring is discharged. The outer pressure ring pressure head resets under the action of the reset spring and discharges the remaining hydraulic oil in the inner cavity of the outer pressure ring. By controlling the height adjustment bolts on the inner and outer pressure rings, the height of the inner and outer ring pressure heads can be raised or lowered, so that the molding mechanism can adjust the pressure of the pressure head on the inner and outer rings of the gear ring part in the vertical direction. When the part is a face gear, the pressure received vertically downward from the upper hydraulic mechanism through the upper pressure plate can be transmitted to the upper pressure ring. The upper pressure ring presses against the face gear tooth surface, which can reduce quenching deformation. The base plate is used to bear the pressure applied by the parts, the inner ring die assembly, the outer ring die assembly and the upper die assembly. The base plate has bolt holes that are fixed to the quenching lifting platform, and oil inlet holes for oil quenching. The cooling rate during quenching can be controlled by increasing or decreasing the number of bolts in the oil inlet holes. The base plate also has a core hole that matches the core for positioning the core.

[0024] Beneficial effects: Compared with the prior art, this invention, through the coordinated design of the inner ring die assembly, outer ring die assembly, and upper die assembly, utilizes a hydraulic cylinder to push the top core and upper die ring, and a hydraulic valve to control the outer ring pressure, to achieve positioning and clamping of different gear parts. It can not only adapt to the clamping of parts of various sizes and shapes, overcoming the problem of poor adaptability of traditional die to parts of different shapes and sizes, but also eliminates the need to change the die according to the size and shape of the part, achieving truly adjustable die clamping. Furthermore, it reduces the design and manufacturing of part molding tooling. The entire molding and quenching process is highly automated, simple to operate, and has high control precision, significantly improving the molding and quenching efficiency of face gears and gear ring parts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the inner ring molding assembly.

[0027] Figure 3 This is a schematic diagram of the outer ring molding assembly;

[0028] Figure 4 This is a schematic diagram of the upper molding assembly;

[0029] Figure 5 This is a schematic diagram of the base plate. Detailed Implementation

[0030] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0031] like Figure 1 As shown, the present invention provides an adjustable gear ring die-forming and quenching mechanism, including an inner ring die assembly 1, an outer ring die assembly 2, an upper die assembly 3, and a base plate 4; the inner ring die assembly 1 is used to fix the inner ring of the gear ring and apply a certain pressure; the outer ring die assembly 2 is used to apply pressure to the outer ring of the gear ring and cooperates with the inner ring die assembly 1 to control the deformation of the gear ring on the face gear 5; the upper die assembly 3 is used to apply a certain pressure to the tooth surface of the face gear 5 to control the deformation of the tooth surface; the base plate 4 is used to support the face gear 5, the inner ring die assembly 1, and the outer ring die assembly 2, and is fixedly connected to a liftable quenching pool.

[0032] like Figure 2As shown, the inner ring pressing assembly 1 includes a top core 1.1, an inner pressing ring 1.2, and a reset mechanism. The top core 1.1 coaxially passes through the inner ring of the inner pressing ring 1.2. The inner pressing ring 1.2 has 12 radially arranged inner pressing ring square holes 1.7 and inner ring pressing heads 1.5 that fit within the inner pressing ring square holes 1.7. The inner end of the inner ring pressing head 1.5 is provided with a wedge 1.8 that cooperates with the top core 1.1, and the outer end is used to abut against the inner ring of the face gear 5 gear ring, applying a radial force from the inside to the outside to the face gear 5 gear ring. The wedge 1.8 is used to transmit the movement between the top core 1.1 and the inner ring pressing head 1.5, reducing... The collision impact that occurs when the small top core 1.1 contacts the inner ring pressure head 1.5 is addressed by a reset mechanism including a reset connecting rod collar 1.3 sleeved on the upper end of the top core 1.1 and 14 reset connecting rods 1.4. One end of the reset connecting rod 1.4 is connected to the reset connecting rod collar 1.3, and the other end is fitted onto the outer end of the inner ring pressure head 1.5. The reset connecting rod 1.4 is used to pull the inner ring pressure head 1.5 to reset after quenching. Four first height adjusting bolts 1.6 are provided on the inner pressure ring 1.2. The first height adjusting bolts 1.6 are used to adjust the height of the inner pressure ring 1.2 and the inner ring pressure head 1.5.

[0033] like Figure 3 As shown, the outer ring compression molding assembly 2 includes an outer compression ring 2.1, 12 outer ring compression heads 2.2, a return spring 2.4, and a sealing washer 2.3. The outer compression ring 2.1 has 12 outer compression ring inner cavities 2.6 arranged radially inside. An outer compression ring inner hole 2.11 is formed between the outer compression ring inner cavity 2.6 and the inner ring of the outer compression ring 2.1. The outer ring compression heads 2.2 fit within the outer compression ring inner cavity 2.6 and extend outward through the outer compression ring inner hole 2.11. An oil inlet 2.7 and an oil outlet 2.8 are respectively provided on the outer ring of the outer compression ring 2.1 at the location of the outer compression ring inner cavity 2.6. The return spring 2.4 is located within the outer compression ring inner cavity 2.6 and fits onto the outer ring compression head 2.2. The sealing washer 2.3 is located within the outer compression ring inner cavity 2.6. Between the outer ring pressure head 2.2 and the inner hole 2.11 of the outer pressure ring, one end of the outer ring pressure head 2.2 is located outside the outer pressure ring 2.1, and the other end forms a hydraulic oil flow chamber 2.61 with the inner cavity 2.6 of the outer pressure ring. Four second height adjusting bolts 2.5 are provided on the outer pressure ring 2.1. The second height adjusting bolts 2.5 are used to adjust the height of the outer pressure ring 2.1 and the outer ring pressure head 2.2. A one-way valve 2.9, a relief valve 2.10 and a solenoid valve (not shown in the figure) are provided on the outer ring of the hydraulic cylinder. The oil inlet 2.7 is connected to the hydraulic cylinder through the one-way valve 2.9, so that the hydraulic oil can only enter through the oil inlet 2.7 and not exit. The oil outlet 2.8 is connected to the relief valve 2.10 to control the oil pressure inside the outer pressure ring 2.1.

[0034] like Figure 4As shown, the upper pressure mold assembly 3 includes an upper pressure plate 3.1 and an upper pressure ring 3.2. The upper pressure plate 3.1 is mounted and fixed on the upper pressure ring 3.2 by several fastening bolts 3.3 and bolt holes 3.4. That is, the upper pressure ring 3.2 is located at the lower part of the upper pressure plate 3.1. The upper pressure ring 3.2 has multiple sizes for pressing face gear parts with different inner and outer diameters. The upper pressure plate 3.2 is provided with multiple through holes for cooperating with upper pressure rings 3.2 of different sizes to press parts of different sizes. The upper pressure plate 3.1 is sleeved on the top core 1.1 to bear the power of the hydraulic device and transmit the power to the upper pressure ring 3.2. The upper pressure ring 3.2 is used to press the tooth surface of the face gear parts.

[0035] like Figure 5 As shown, the base plate 4 has several oil inlet holes 4.5 and oil control bolts 4.4 installed on the oil inlet holes 4.5. The oil control bolts 4.4 are used to control the amount of oil entering the plate. The base plate 4 has several bolt holes and fastening bolts 4.6 installed on the bolt holes. The base plate 4 is fixedly connected to the quenching lifting device through the fastening bolts 4.6. The base plate 4 has stepped grooves that match the outer pressure ring 2.1, the inner pressure ring 1.2, and the top core 1.1. The stepped grooves include a first ring groove 4.1, a second ring groove 4.2, and a third circular groove 4.3. The first ring groove 4.1, the second ring groove 4.2, and the third circular groove 4.3 are used to position the outer pressure ring 2.1, the inner pressure ring 1.2, and the top core 1.1 respectively, ensuring that the outer pressure ring 2.1, the inner pressure ring 1.2, and the top core 1.1 are vertically installed on the base plate 4.

[0036] In this embodiment, the above-mentioned molding and quenching mechanism is applied to the molding and quenching treatment of the opposing gear 5, referring to... Figures 1-5 Specifically, it includes the following steps:

[0037] Step 1: Place the face gear 5 on the base plate 4 and position it between the inner ring molding assembly 1 and the outer ring molding assembly 2. Adjust the inner pressure ring 1.2 and the inner ring pressure head 1.5 to a suitable height using the first height adjusting bolt 1.6.

[0038] Step 2: The top core 1.1 moves vertically downward under the action of the hydraulic cylinder. During the downward movement, it comes into contact with the wedge block 1.8. Due to the special structure of the wedge block 1.8, the inner ring pressure head 1.5 is forced to move outward and come into contact with the inner ring of the face gear 5. The face gear 5 begins to move under the action of the inner ring pressure head 1.5 and automatically centers itself with the top core 1.1. The top core 1.1 continues to move downward, and the pressure between the inner ring pressure head 1.5 and the inner ring of the face gear 5 increases, causing the inner ring of the face gear 5 to be pressed tightly.

[0039] Step 3: After adjusting the outer pressure ring 2.1 to a suitable height using the second height adjusting bolt 2.5 on the outer pressure ring 2.1, the hydraulic cylinder is connected to the oil inlet 2.7 and oil outlet 2.8 of the outer pressure ring 2.1 through a pipe. The solenoid valve remains closed, and the hydraulic oil enters the hydraulic oil flow chamber 2.61 through the oil inlet 2.7 and the one-way valve 2.9. The hydraulic oil flows in the hydraulic oil flow chamber 2.61 and flows out from the oil outlet 2.8. The oil pressure can be precisely controlled by the overflow valve 2.10 of the oil outlet 2.8, so that the outer ring pressure head 2.2 extends outward under the action of hydraulic oil pressure, so that the outer ring pressure head 2.2 presses the outer ring of the face gear 5 from the outside to the inside. The inner ring pressing mold assembly 1 and the outer ring pressing mold assembly 2 cooperate with each other to press the face gear 5 on both sides.

[0040] Step 4: Select a suitable upper pressure ring 3.2 according to the size of the face gear 5, and install it on the upper pressure plate 3.1 using fastening bolts 3.3. Start the hydraulic device to push the upper pressure plate 3.1, so that the upper pressure ring 3.2 presses down on the tooth surface of the face gear 5, and transmits the pressure to the tooth surface of the face gear 5 through the upper pressure ring 3.2;

[0041] Step 5: Start the quenching tank lifting platform to lower the entire mechanism and parts into the quenching medium, and control the quenching speed by controlling the number of oil control bolts 4.4.

[0042] Step Six: After quenching is completed, start the quenching lifting platform to raise the entire mechanism and parts. Control the hydraulic device to pull the upper pressure plate 3.1, so that the upper pressure ring 3.2 slowly unloads the pressure. When the upper pressure ring 3.2 disengages from the tooth surface, the upper pressure die assembly 3 quickly rises away from the parts.

[0043] Step 7: The outer ring pressure mold assembly 2 opens the oil outlet 2.8, and under the action of oil pressure, most of the hydraulic oil in the outer pressure ring is discharged. The outer ring pressure head 2.2 is reset under the action of the return spring 2.4 and discharges the remaining hydraulic oil in the inner cavity 2.6 of the outer pressure ring.

[0044] Step 8: Slowly unload the pressure from the inner ring pressure head 1.5. Once the inner ring pressure head 1.5 is no longer in contact with the inner ring of the face gear 5, increase the speed and pull the top core 1.1 upwards. This will cause the reset linkage 1.4 to pull the inner ring pressure head 1.5 inwards quickly. When the inner ring pressure head 1.5 is completely away from the face gear 5, slow down the pulling speed of the top core 1.1. At this point, the die-casting and quenching of the part is complete. The quenched part can then be removed.

Claims

1. An adjustable gear ring press hardening mechanism, characterized in that, Includes an inner ring molding assembly, an outer ring molding assembly, an upper molding assembly, and a base plate; The inner ring molding assembly is used to fix and press the inner ring of the gear ring. The outer ring die assembly is used to apply pressure to the outer ring of the gear ring, and works with the inner ring die assembly to control the deformation of the gear ring. The upper pressure mold assembly is used to apply pressure to the tooth surface of the gear to control tooth surface deformation; The base plate is used to support the parts, the inner ring mold and the outer ring mold, and is fixedly connected to the liftable quenching pool; The inner ring molding assembly includes a top core and an inner pressure ring. The top core passes through the inner ring of the inner pressure ring. The inner pressure ring is radially provided with a plurality of inner pressure ring square holes and an inner ring pressure head that fits into the inner pressure ring square holes. The inner end of the inner ring pressure head is provided with a wedge block that fits with the top core, and the outer end is used to abut against the inner ring of the gear ring to apply a radial force from the inside to the outside to the gear ring. The inner ring pressure mold assembly also includes a reset mechanism, which includes a reset connecting rod collar sleeved on the top core and several reset connecting rods. One end of the reset connecting rod is connected to the reset connecting rod collar, and the other end is fitted on the outer end of the inner ring pressure head. The reset connecting rod is used to pull the inner ring pressure head to reset after quenching. The outer ring pressure mold assembly includes an outer pressure ring and several outer ring pressure heads. Several outer pressure ring inner cavities are radially arranged inside the outer pressure ring. An outer pressure ring inner hole is opened between the outer pressure ring inner cavity and the inner ring of the outer pressure ring. The outer ring pressure heads are fitted inside the outer pressure ring inner cavity and extend outward through the outer pressure ring inner hole. An oil inlet and an oil outlet are respectively provided on the outer ring of the outer pressure ring at the location of the outer pressure ring inner cavity. A return spring and a sealing washer are provided inside the outer pressure ring cavity. The return spring is fitted onto the outer ring pressure head, and a sealing washer is provided between the outer ring pressure head and the inner hole of the outer pressure ring.

2. An adjustable gear rim press quench mechanism according to claim 1 wherein, The inner pressure ring is provided with a plurality of first height adjusting bolts, which are used to adjust the height of the inner pressure ring and the inner ring pressure head.

3. An adjustable gear rim press quench mechanism according to claim 1 wherein, The outer pressure ring is provided with several second height adjusting bolts, which are used to adjust the height of the outer pressure ring and the outer ring pressure head.

4. The adjustable gear ring die-forming and quenching mechanism according to claim 1, characterized in that, The upper pressure mold assembly includes an upper pressure plate and an upper pressure ring disposed below the upper pressure plate. The upper pressure plate is sleeved on the top core to bear the power of the hydraulic device and transmit the power to the upper pressure ring. The upper pressure ring is used to press the tooth surface of the gear part.

5. The adjustable gear ring die-forming and quenching mechanism according to claim 1, characterized in that, The base plate is provided with a plurality of base plate oil inlet holes and oil control bolts provided on the base plate oil inlet holes, the oil control bolts being used to control the amount of oil entering the plate; The base plate has several bolt holes and fastening bolts installed in the bolt holes. The base plate is fixedly connected to the quenching lifting device by the fastening bolts.

6. The adjustable gear ring die-forming and quenching mechanism according to claim 1, characterized in that, The base plate has stepped grooves that match the outer pressure ring, inner pressure ring, and top core. The stepped grooves are used to position the outer pressure ring, inner pressure ring, and top core.

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