Spiral bevel gear tooth crest rounding device

Abstract

The utility model belongs to the technical field of spiral bevel gear machining, and discloses a spiral bevel gear tooth crest rounding device which comprises rounding equipment, a fixing frame is installed on the top of the rounding equipment, a cutter is arranged above an operation area of the rounding equipment, a protective cover is arranged on the outer surface of the cutter, and the protective cover is installed on the fixing frame through an external transmission system. A cooling mechanism is installed on the rounding device and comprises a high-pressure pump body installed on the fixing frame, a spray head is installed on the protective cover, the spraying direction of the spray head faces a tool bit of a tool, an oil storage tank is installed on the rounding device, a liquid inlet pipe is arranged between the high-pressure pump body and the oil storage tank, and the liquid inlet pipe is communicated with the oil storage tank. A liquid drainage channel is arranged between the spray head and the high-pressure pump body, the tool is made of hard alloy materials, and the surface of a tool bit of the tool is coated with a titanium aluminum nitride abrasion-resistant coating. According to the utility model, not only can the cutter be conveniently cooled, but also the phenomenon of tipping caused by uneven stress of heat generated by heating can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of arc bevel gear processing technology, and in particular to an arc bevel gear tooth tip rounding device. Background Technology

[0002] A spiral bevel gear tooth tip rounding device is a specialized piece of equipment or tool used to round the edges of spiral bevel gear teeth. Its core function is to mechanically or CNC process the sharp edges of the gear teeth to create a rounded transition, thereby improving the gear's mechanical properties and durability.

[0003] Spiral bevel gears are widely used in the field of mechanical transmission. The tooth tip edges need to be rounded to reduce stress concentration and improve fatigue life. Traditional rounding methods are mostly processed by ordinary chamfering machine tools, which have the problem of short tool life. Specifically, carbide tools are prone to chipping due to uneven heat and stress caused by heating. Therefore, we propose a spiral bevel gear tooth tip rounding device. Utility Model Content

[0004] In view of the fact that the existing rounding methods are mostly processed by ordinary chamfering machine tools, which have the problem of short tool life, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a device for rounding the tooth tip of an arc bevel gear, which aims to prevent the carbide cutting tool used in the machining process of the arc bevel gear from chipping due to uneven stress caused by heating.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A bevel gear tooth tip rounding device includes a rounding device, a fixed frame is installed on the top of the rounding device, a cutter is provided above the working area of ​​the rounding device, a protective cover is provided on the outer surface of the cutter, and the protective cover is installed on the fixed frame through an external transmission system;

[0008] The rounding device is equipped with a cooling mechanism, which includes a high-pressure pump body mounted on the fixed frame, a nozzle mounted on the protective cover, and the spray direction of the nozzle is towards the cutting head of the tool. The rounding device is equipped with an oil storage tank, and an inlet pipe is provided between the high-pressure pump body and the oil storage tank, and the inlet pipe is connected to the oil storage tank. A drain channel is provided between the nozzle and the high-pressure pump body.

[0009] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, the cutting tool is made of cemented carbide, and the cutting tool tip surface is coated with a wear-resistant coating of titanium aluminum nitride.

[0010] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, the drain channel is composed of a drain pipe, a hollow box and a connecting hose. The hollow box is installed on the fixed frame. The drain pipe is installed between the hollow box and the high-pressure pump body and is connected to the hollow box. The connecting hose is installed between the hollow box and the nozzle and is connected to both the hollow box and the nozzle.

[0011] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, wherein: an oil injection pipe for injecting lubricating oil is fixedly installed on the top of the oil tank, and the oil injection pipe is connected to the oil tank.

[0012] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, wherein: an annular collection groove is provided on the periphery of the rounding equipment working area, and a guide hole is provided on the inner wall of the annular collection groove;

[0013] It also includes a collection device, which consists of a drainage pipe and a collection cylinder. The drainage pipe is installed on the rounded device and is connected to the guide hole. The collection cylinder is located below the direction of liquid flow in the drainage pipe.

[0014] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, the guide hole is inclined, the highest point of the guide hole is connected to the annular collection groove, and the lowest point of the guide hole is connected to the drainage pipe.

[0015] As a technical solution of the spiral bevel gear tooth tip rounding device of this utility model, the rounding device is equipped with a placement plate, the top of the placement plate is provided with a positioning groove, the bottom of the collection cylinder has an integrally formed positioning protrusion corresponding to the positioning groove, and the positioning protrusion is adapted to the positioning groove. The collection cylinder is detachably installed on the placement plate through the positioning groove and the positioning protrusion.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. This utility model, by activating the high-pressure pump, draws lubricating oil from the oil tank into the high-pressure pump body through the inner cavity of the inlet pipe, and discharges it from the output end of the high-pressure pump body. The lubricating oil passes through the drain pipe, hollow box, connecting hose and nozzle inner cavity, and is finally sprayed onto the cutting edge of the tool through the nozzle, cooling the cutting edge of the tool for machining spiral bevel gears to prevent chipping due to uneven heat distribution caused by heating. At the same time, the nozzle moves with the tool to ensure the cooling effect during processing, thus facilitating the cooling of the tool and avoiding chipping due to uneven heat distribution caused by heating.

[0018] 2. In this utility model, the sprayed-out cooled lubricating oil falls into the annular collection tank and flows into the drainage pipe through the inclined guide hole, and finally flows into the collection cylinder for collection. If it is necessary to recover the lubricating oil in the collection cylinder, simply remove the collection cylinder from the placement plate and pour it into the designated position, and then reset it. At this time, the positioning protrusion is locked in the positioning groove, and the collection cylinder is located below the drainage pipe, which facilitates the collection and recovery of the cooled lubricating oil, and the operation is simple and quick. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the main structure of the spiral bevel gear tooth tip rounding device of this utility model.

[0021] Figure 2 This is a rear view structural diagram of the arc-tooth bevel gear tooth tip rounding device of this utility model.

[0022] Figure 3 This is a schematic diagram of the separation structure of the collecting cylinder and the placement plate of the arc-tooth bevel gear tooth tip rounding device of this utility model.

[0023] Figure 4 This is a schematic diagram of the cooling mechanism, protective cover, and tool connection structure of the spiral bevel gear tooth tip rounding device of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] In the diagram: 1. Rounding device; 101. Fixing frame; 102. Annular collection tank; 103. Guide hole; 104. Placement plate; 105. Positioning groove; 2. Cutting tool; 3. Protective cover; 4. Nozzle; 5. High-pressure pump body; 6. Drain pipe; 7. Hollow box; 8. Connecting hose; 9. Inlet pipe; 10. Oil storage tank; 1001. Oil injection pipe; 11. Drain pipe; 12. Collection cylinder; 1201. Positioning protrusion. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1-4A device for rounding the tip of an arc bevel gear is provided. The device includes a rounding device 1, a fixed frame 101 mounted on the top of the rounding device 1, a cutter 2 above the working area of ​​the rounding device 1, a protective cover 3 on the outer surface of the cutter 2, and the protective cover 3 is mounted on the fixed frame 101 through an external transmission system. The external transmission system is driven by a servo motor and realizes the radial feed and axial swing of the cutter 2 through a worm gear and a ball screw.

[0028] The rounding device 1 is equipped with a cooling mechanism, which includes a high-pressure pump body 5 mounted on a fixed frame 101, a nozzle 4 mounted on a protective cover 3, and the spray direction of the nozzle 4 is towards the cutting head of the cutter 2. The rounding device 1 is equipped with an oil storage tank 10, and an inlet pipe 9 is provided between the high-pressure pump body 5 and the oil storage tank 10, and the inlet pipe 9 is connected to the oil storage tank 10. A drain channel is provided between the nozzle 4 and the high-pressure pump body 5.

[0029] Reference Figure 1 , Figure 2 as well as Figure 4 The cutting tool 2 is made of cemented carbide, and the cutting tip surface of the cutting tool 2 is coated with a wear-resistant coating of titanium aluminum nitride to extend the service life of the cutting tool 2.

[0030] Reference Figure 1 , Figure 2 as well as Figure 4 The drain channel consists of a drain pipe 6, a hollow box 7, and a connecting hose 8. The hollow box 7 is installed on the fixed frame 101. The drain pipe 6 is installed between the hollow box 7 and the high-pressure pump body 5 and is connected to the hollow box 7. The connecting hose 8 is installed between the hollow box 7 and the nozzle 4 and is connected to both the hollow box 7 and the nozzle 4, so that the lubricating oil for cooling the cutting tool 2 can enter the nozzle 4 through the drain pipe 6, the hollow box 7, and the connecting hose 8, and finally be sprayed onto the cutting head of the cutting tool 2 through the nozzle 4.

[0031] Reference Figure 1 , Figure 2 as well as Figure 4 An oil injection pipe 1001 for injecting lubricating oil is fixedly installed on the top of the oil reservoir 10, and the oil injection pipe 1001 is connected to the oil reservoir 10 so as to inject lubricating oil for cooling into the oil reservoir 10.

[0032] Reference Figure 2 and Figure 3 An annular collection trough 102 is provided around the working area of ​​the rounding device 1, and a guide hole 103 is provided on the inner wall of the annular collection trough 102.

[0033] It also includes a collection device, which consists of a drain pipe 11 and a collection cylinder 12. The drain pipe 11 is installed on the rounding device 1 and is connected to the guide hole 103. The collection cylinder 12 is located below the liquid flow direction in the drain pipe 11 to facilitate the collection of the lubricating oil sprayed out during cooling.

[0034] Reference Figure 2 and Figure 3 The guide hole 103 is inclined, with the highest point of the guide hole 103 connected to the annular collection groove 102 and the lowest point of the guide hole 103 connected to the drainage pipe 11, so that the sprayed lubricating oil can flow into the guide hole 103 through the inner cavity of the guide hole 103.

[0035] Reference Figure 2 and Figure 3 The rounding device 1 is equipped with a placement plate 104. The top of the placement plate 104 is provided with a positioning groove 105. The bottom of the collection cylinder 12 has an integrally formed positioning protrusion 1201 that corresponds to the positioning groove 105. The positioning protrusion 1201 is adapted to the positioning groove 105. The collection cylinder 12 can be detachably installed on the placement plate 104 through the positioning groove 105 and the positioning protrusion 1201, so that the collection cylinder 12 can be detachably installed on the placement plate 104, thereby facilitating the treatment of the lubricating oil in the collection cylinder 12.

[0036] The working principle of this utility model is as follows: When the rounding device 1 performs rounding processing on the spiral bevel gear in the working area, the high-pressure pump body 5 fixed on the fixed frame 101 is started. At this time, the high-pressure pump body 5 draws the lubricating oil in the oil storage tank 10 into the high-pressure pump body 5 through the inner cavity of the liquid inlet pipe 9, and discharges it from the output end of the high-pressure pump body 5. The lubricating oil passes through the drain pipe 6, the hollow box 7, the connecting hose 8 and the inner cavity of the nozzle 4, and finally sprays it onto the cutting head of the tool 2 through the nozzle 4, and cools the cutting head of the tool 2 for processing the spiral bevel gear, so as to prevent the blade from chipping due to uneven heat and force generated by heating. At the same time, the nozzle 4 moves with the tool 2 to ensure the cooling effect during processing, thereby facilitating the cooling of the tool 2 and avoiding the phenomenon of chipping due to uneven heat and force generated by heating.

[0037] Simultaneously, the sprayed-out cooled lubricating oil falls into the annular collection tank 102 and flows into the drainage pipe 11 through the inclined guide hole 103, and finally flows into the collection cylinder 12 for collection. If it is necessary to recover the lubricating oil in the collection cylinder 12, simply remove the collection cylinder 12 from the placement plate 104 and pour it into the designated position, and then reset it. At this time, the positioning protrusion 1201 is engaged and positioned in the positioning groove 105, and the collection cylinder 12 is located below the drainage pipe 11, which facilitates the collection and recovery of the cooled lubricating oil, and the operation is simple and quick.

[0038] This utility model provides a device for rounding the tooth tip of an arc bevel gear. This device not only facilitates the cooling of the cutting tool 2, but also avoids the phenomenon of chipping due to uneven heat distribution caused by heating.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for rounding the tip of an arc-shaped bevel gear, comprising a rounding device (1), characterized in that: The rounding device (1) is equipped with a fixed frame (101) on its top. A cutter (2) is provided above the working area of ​​the rounding device (1). A protective cover (3) is provided on the outer surface of the cutter (2). The protective cover (3) is installed on the fixed frame (101) through an external transmission system. The rounding device (1) is equipped with a cooling mechanism, which includes a high-pressure pump body (5) mounted on the fixed frame (101), a nozzle (4) mounted on the protective cover (3), and the spray direction of the nozzle (4) is towards the cutting head of the cutter (2). The rounding device (1) is equipped with an oil storage tank (10), and an inlet pipe (9) is provided between the high-pressure pump body (5) and the oil storage tank (10), and the inlet pipe (9) is connected to the oil storage tank (10). A drain channel is provided between the nozzle (4) and the high-pressure pump body (5).

2. The spiral bevel gear tooth tip rounding device according to claim 1, characterized in that: The cutting tool (2) is made of cemented carbide, and the cutting head surface of the cutting tool (2) is coated with a wear-resistant coating of titanium aluminide.

3. The spiral bevel gear tooth tip rounding device according to claim 1, characterized in that: The drainage channel consists of a drainage pipe (6), a hollow box (7), and a connecting hose (8). The hollow box (7) is installed on the fixed frame (101). The drainage pipe (6) is installed between the hollow box (7) and the high-pressure pump body (5), and the drainage pipe (6) is connected to the hollow box (7). The connecting hose (8) is installed between the hollow box (7) and the nozzle (4), and the connecting hose (8) is connected to both the hollow box (7) and the nozzle (4).

4. The spiral bevel gear tooth tip rounding device according to claim 1, characterized in that: An oil injection pipe (1001) for injecting lubricating oil is fixedly installed on the top of the oil storage tank (10), and the oil injection pipe (1001) is connected to the oil storage tank (10).

5. The spiral bevel gear tooth tip rounding device according to claim 1, characterized in that: The rounding device (1) has an annular collection trough (102) on the periphery of its working area, and a guide hole (103) is provided on the inner wall of the annular collection trough (102); It also includes a collection device, which consists of a drainage pipe (11) and a collection cylinder (12). The drainage pipe (11) is installed on the rounding device (1) and is connected to the guide hole (103). The collection cylinder (12) is located below the direction of liquid flow in the drainage pipe (11).

6. The spiral bevel gear tooth tip rounding device according to claim 5, characterized in that: The guide hole (103) is inclined, the highest point of the guide hole (103) is connected to the annular collection groove (102), and the lowest point of the guide hole (103) is connected to the drainage pipe (11).

7. The spiral bevel gear tooth tip rounding device according to claim 5, characterized in that: The rounding device (1) is equipped with a placement plate (104). The top of the placement plate (104) is provided with a positioning groove (105). The bottom of the collection cylinder (12) has an integrally formed positioning protrusion (1201) corresponding to the positioning groove (105). The positioning protrusion (1201) is adapted to the positioning groove (105). The collection cylinder (12) is detachably installed on the placement plate (104) through the positioning groove (105) and the positioning protrusion (1201).

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