A gear blank double-head cutting device and a cutting method

Abstract

The present invention discloses a double-headed cutting device and a cutting method for a gear blank, comprising a foundation, a gear blank rotary table, a workpiece processing device and a cutting output device; the gear blank rotary table is arranged in the middle of the foundation, carrying the gear blank to be processed and driving the gear blank to rotate; the workpiece processing device includes two groups of saw blade cutting devices and a transmission device for driving the saw blade cutting devices to translate along the X-axis and the Y-axis and lift along the Z-axis. Each group of saw blade cutting devices is independently close to or away from the gear blank rotary table to perform cutting processing on the gear blank; the cutting output device is arranged below the workpiece processing device, receiving the cutting generated after the saw blade cutting device performs cutting processing on the gear blank and outputting it to the outside of the foundation, including an X-axis cutting conveying component and a Y-axis cutting conveying component. The present invention adopts a method of cutting the large-size gear blank by dividing work steps, cutting grooves on the gear blank, and reducing the processing difficulty of gear milling.

Description

Technical Field

[0001] The present invention relates to the field of gear processing, and more specifically, to a double-headed cutting device and a cutting method for a gear blank. Background Art

[0002] During the processing of large-sized gears, in order to facilitate subsequent tooth groove processing, a part needs to be cut off from the gear blank first, and then the tooth milling work is carried out with a milling machine. However, because large-sized gears are really too big, especially the processing of gear blanks used in heavy machinery equipment is more difficult. Usually, a saw band is used for processing, but the disadvantage of the saw band is that the equipment using the saw band is very tall, the whole equipment occupies a large space, and it is relatively inflexible in use and adjustment. Moreover, during its use, the saw slot work is often carried out at a single station. On the one hand, the processing efficiency is low, and after long-term work, the saw band is easily worn and it is extremely troublesome to replace. Since the saw band penetrates the entire gear blank from top to bottom, the cuttings formed after the saw slot work cannot be collected and processed, resulting in a lot of cuttings at the processing position, which are not easy to clean, and the situation of jamming the saw band will also occur, affecting the service life of the saw band. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a double-headed cutting device and a cutting method for a gear blank.

[0004] The technical solution of the present invention is: a double-headed cutting device for a gear blank, comprising a foundation, a gear blank rotary table, a workpiece processing device, and a cutting output device;

[0005] The gear blank rotary table is arranged in the middle of the foundation, bearing the gear blank to be processed and driving the gear blank to rotate;

[0006] The workpiece processing device includes two groups of saw blade cutting devices and a transmission device for driving the saw blade cutting devices to translate along the X-axis and Y-axis and lift along the Z-axis. Each group of saw blade cutting devices can independently approach or move away from the gear blank rotary table to perform cutting processing on the gear blank;

[0007] The cutting output device is arranged below the workpiece processing device, receiving the cuttings generated after the saw blade cutting device performs cutting processing on the gear blank and outputting them to the outside of the foundation, including an X-axis cutting conveying component and a Y-axis cutting conveying component.

[0008] Preferably, the transmission device includes an X-axis drive group, a Y-axis drive group, and a Z-axis drive group. The X-axis drive group includes an X-axis guide rail disposed on the foundation. The Y-axis drive group includes a Y-axis guide rail disposed above the X-axis guide rail. The X-axis guide rail and the Y-axis guide rail are perpendicular to each other. The lower part of the Y-axis guide rail is slidably connected to the X-axis guide rail, and the motor drives the screw rod to rotate, so that the entire Y-axis guide rail translates along the X-axis guide rail. The Z-axis drive group includes a Z-axis guide rail vertically disposed above the Y-axis guide rail. The lower end of the Z-axis guide rail is provided with a Z-axis seat. The lower part of the Z-axis seat is slidably connected to the Y-axis guide rail, and the motor drives the screw rod to rotate, so that the entire Z-axis seat translates along the Y-axis guide rail.

[0009] As a further preference, a cutting seat is provided on the Z-axis guide rail. The cutting seat is slidably connected to the Z-axis guide rail, and the motor drives the screw rod to rotate, so that the entire cutting seat moves up and down along the Z-axis guide rail. The saw blade cutting device is fixed on the side surface of the cutting seat and faces the gear blank turntable.

[0010] As a further preference, the saw blade cutting device includes a cutting saw blade, a power motor for driving the cutting saw blade to rotate, and a transmission device connecting the power motor and the cutting saw blade. The transmission device includes a deceleration device.

[0011] As a further preference, the Y-axis cutting and conveying assembly is disposed in the middle of the Y-axis guide rail, and its output end extends to the outside of the Y-axis guide rail. A cutting funnel is provided below the saw blade cutting device. The upper part of the cutting funnel faces the saw blade cutting device, and the lower part faces the Y-axis cutting and conveying assembly.

[0012] As a further preference, the X-axis cutting and conveying assembly is disposed below the output end of the Y-axis cutting and conveying assembly. The conveying directions of the X-axis cutting and conveying assembly and the Y-axis cutting and conveying assembly are perpendicular to each other.

[0013] As a further preference, in the workpiece processing device, each group of saw blade cutting devices is respectively equipped with a corresponding group of Y-axis drive groups and Z-axis drive groups, and shares one X-axis drive group.

[0014] A gear blank cutting method includes the following steps:

[0015] A. During operation, place the gear blank to be processed on the gear blank turntable, and drive the gear blank to rotate by the rotation of the gear blank turntable.

[0016] B. Rotate the position of the first cut groove of the first tooth groove to be processed on the gear blank to the front of the saw blade cutting device on the right.

[0017] C. Driven by the transmission device, the saw blade cutting device on the right is driven to approach the gear blank and cut the first cutting groove of the first tooth groove;

[0018] D. After the cutting is completed, the gear blank turntable continues to rotate, and the position of the second cutting groove of the first tooth groove rotates to the front of the saw blade cutting device on the left; at the same time, the position of the first cutting groove of the second tooth groove rotates to the front of the saw blade cutting device on the right;

[0019] E. Driven by the transmission device, the saw blade cutting device on the left is driven to approach the gear blank and cut the second cutting groove of the first tooth groove; driven by the transmission device, the saw blade cutting device on the right is driven to approach the gear blank and cut the first cutting groove of the second tooth groove;

[0020] F. At this time, the cutting work of the first tooth groove is completed; and the machining of the first cutting groove of the second tooth groove is also synchronously processed.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention adopts a double-station structure. The saw blade cutting device is respectively driven by the transmission device to move along the three directions of the X-axis, Y-axis, and Z-axis, and the gear blank is carried by the gear blank turntable for rotation, so as to realize the cutting work of the position of each tooth groove on the gear blank. And due to its double-station structure, the two sides of the cut gear groove can be processed respectively, improving the production efficiency.

[0023] 2. The present invention adopts a double-station structure, and triangular cutting grooves similar to the shape of the gear groove are cut out at the edge of the gear blank, which is convenient for subsequent gear milling processing.

[0024] 3. Effectively solves the problems that the saw blade is easy to wear and inconvenient to replace during the processing of the original large-diameter gear.

[0025] 4. The present invention uses a three-axis drive saw blade cutting device to cut the gear blank, which is flexible and convenient to use, occupies less space in the workshop, improves the space utilization rate, and is convenient for subsequent maintenance.

[0026] 5. The present invention uses the saw blade to cut the gear blank from top to bottom, and the cutting is collected by the cutting funnel provided below, and finally output to the outside of the foundation by the cutting output device, realizing automatic cutting cleaning and avoiding the situation of the original cutting not being cleaned and the saw being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0028] Figure 2 It is a top view of the present invention.

[0029] Figure 3 It is a schematic three - dimensional structure diagram of the workpiece processing device of the present invention.

[0030] Figure 4 It is a schematic three - dimensional structure diagram of the single - group saw blade cutting device of the present invention.

[0031] Figure 5 It is the front view of the single - group saw blade cutting device of the present invention.

[0032] Figure 6 It is the top view of the single - group saw blade cutting device of the present invention.

[0033] Figure 7 It is the left view of the single - group saw blade cutting device of the present invention.

[0034] Figure 8 It is a schematic structure diagram of the cutting groove cut when processing the gear blank of the present invention.

[0035] Figure 9 It is one of the step diagrams when processing the gear blank of the present invention.

[0036] Figure 10 It is the second step diagram when processing the gear blank of the present invention.

[0037] Label description:

[0038] 1: Saw blade cutting device; 2: Gear blank rotary table; 3: Foundation; 4: Cutting output device; 5: Z - axis guide rail; 6: Cutting seat; 7: Z - axis seat; 8: Motor; 9: Lead screw; 10: Y - axis guide rail; 11: Cutting funnel; 12: X - axis guide rail; 13: Cutting saw blade; 41: X - axis cutting and conveying component; 42: Y - axis cutting and conveying component; 20: First cutting groove; 21: Second cutting groove; 22: First tooth groove; 23: Second tooth groove; 24: Saw blade cutting device on the right; 25: Saw blade cutting device on the left. Detailed implementation mode

[0039] The present invention will be further described below in conjunction with the drawings and embodiments.

[0040] As Figure 1-7 shown, a double - head cutting device for gear blanks includes a foundation 3, a gear blank rotary table 2, a workpiece processing device, and a cutting output device 4;

[0041] The gear blank rotary table 2 is arranged in the middle of the foundation 3, carrying the gear blank to be processed and driving the gear blank to rotate;

[0042] The workpiece processing device comprises two sets of saw blade cutting devices 1 and a transmission device for driving the saw blade cutting devices 1 to translate along the X-axis and the Y-axis and to lift and lower along the Z-axis. Each set of saw blade cutting devices 1 independently approaches or moves away from the gear blank turntable 2 to perform cutting processing on the gear blank.

[0043] The cutting output device 4 is arranged below the workpiece processing device, receives the cutting produced by the saw blade cutting device 1 after cutting the gear blank, and outputs it to the outside of the foundation 3, including an X-axis cutting conveying component 41 and a Y-axis cutting conveying component 42.

[0044] like Figure 4-7 As shown, in this embodiment, the transmission device includes an X-axis drive group, a Y-axis drive group and a Z-axis drive group. The X-axis drive group includes an X-axis guide rail 12 arranged on a foundation 3, and the Y-axis drive group includes a Y-axis guide rail 10 arranged above the X-axis guide rail 12. The X-axis guide rail 12 and the Y-axis guide rail 10 are perpendicular to each other. The lower part of the Y-axis guide rail 10 is slidably connected to the X-axis guide rail 12, and the motor 8 drives the lead screw 9 to rotate so that the Y-axis guide rail 10 as a whole is translated along the X-axis guide rail 12; the Z-axis drive group includes a Z-axis guide rail 5 vertically arranged above the Y-axis guide rail 10, and a Z-axis seat 7 is provided at the lower end of the Z-axis guide rail 5. The lower part of the Z-axis seat 7 is slidably connected to the Y-axis guide rail 10, and the motor 8 drives the lead screw 9 to rotate so that the Z-axis seat 7 as a whole is translated along the Y-axis guide rail 10.

[0045] In this embodiment, a cutting seat 6 is provided on the Z-axis guide rail 5, and the cutting seat 6 is slidably connected to the Z-axis guide rail 5, and the motor 8 drives the screw rod 9 to rotate, so that the cutting seat 6 as a whole is lifted and lowered along the Z-axis guide rail 5; the saw blade cutting device 1 is fixed on the side surface of the cutting seat 6 and faces the gear blank turntable 2.

[0046] In this embodiment, the saw blade cutting device 1 includes a cutting saw blade 13, a power motor driving the cutting saw blade 13 to rotate, and a transmission device connecting the power motor and the cutting saw blade 13, wherein the transmission device includes a reduction device.

[0047] In this embodiment, the Y-axis cutting and conveying assembly 42 is arranged in the middle part of the Y-axis guide rail 10, and its output end extends to the outside of the Y-axis guide rail 10; a cutting funnel 11 is provided below the saw blade cutting device 1, and the upper part of the cutting funnel 11 faces the saw blade cutting device 1, and the lower part faces the Y-axis cutting and conveying assembly 42.

[0048] In this embodiment, the X-axis cutting conveying assembly 41 is disposed below the output end of the Y-axis cutting conveying assembly 42, and the conveying directions of the X-axis cutting conveying assembly 41 and the Y-axis cutting conveying assembly 42 are perpendicular to each other.

[0049] In this embodiment, in the workpiece processing device, each saw blade cutting device 1 is respectively equipped with a corresponding Y-axis drive group and a Z-axis drive group, and shares an X-axis drive group.

[0050] A method for cutting a gear blank includes the following steps:

[0051] A. During operation, place the gear blank to be processed on the gear blank rotary table 2. Due to the particularly heavy self-weight of large gears, it can be stably placed on the gear blank rotary table 2 without clamping, and the rotation of the gear blank rotary table 2 drives the gear blank to rotate. The structure of the gear blank rotary table 2 is prior art and will not be elaborated here.

[0052] B. Taking the counterclockwise rotation of the gear blank rotary table 2 as an example, as shown in Figure 9 and 10 , rotate the position of the first cutting groove 20 of the first tooth groove 22 to be processed on the gear blank to the front of the saw blade cutting device 24 on the right.

[0053] C. Driven by the transmission device, drive the saw blade cutting device 24 on the right to approach the gear blank and cut the first cutting groove 20 of the first tooth groove 22.

[0054] D. After cutting is completed, the gear blank rotary table 2 continues to rotate, and the position of the second cutting groove 21 of the first tooth groove 22 rotates to the front of the saw blade cutting device 25 on the left. At the same time, the position of the first cutting groove 20 of the second tooth groove 23 rotates to the front of the saw blade cutting device 24 on the right.

[0055] E. Driven by the transmission device, drive the saw blade cutting device 25 on the left to approach the gear blank and cut the second cutting groove 21 of the first tooth groove 22; driven by the transmission device, drive the saw blade cutting device 24 on the right to approach the gear blank and cut the first cutting groove 20 of the second tooth groove 23.

[0056] F. At this time, the cutting work of the first tooth groove 22 is completed; at the same time, the processing of the first cutting groove 20 of the second tooth groove 23 is also realized synchronously, improving the production efficiency.

[0057] If the gear blank rotary table 2 rotates clockwise, the rotation direction of the gear blank rotary table 2 is opposite, the processing principle is the same, and the processing direction is opposite. First, the saw blade cutting device 25 on the left cuts the second cutting groove 21 of the second tooth groove 23, the gear blank rotary table 2 rotates, and then the saw blade cutting device 24 on the right cuts the first cutting groove 20 of the second tooth groove 23, and at the same time, the saw blade cutting device 25 on the left cuts the second cutting groove 21 of the first tooth groove 22.

[0058] In the description of the specification of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "middle", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0059] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be a circuit connection, a signal control connection, or a gas path connection, an oil path connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double - headed cutting device for gear blanks, characterized in that it includes a foundation (3), a gear blank rotary table (2), a workpiece processing device, and a chip output device (4); The gear blank rotary table (2) is arranged in the middle of the foundation (3), bearing the gear blank to be processed and driving the gear blank to rotate; The workpiece processing device includes two groups of saw blade cutting devices (1) and a transmission device for driving the saw blade cutting devices (1) to translate along the X - axis and Y - axis and lift along the Z - axis. Each group of saw blade cutting devices (1) can independently approach or move away from the gear blank rotary table (2) to perform cutting processing on the gear blank; The chip output device (4) is arranged below the workpiece processing device, receiving the chips generated after the saw blade cutting device (1) cuts the gear blank and outputting them to the outside of the foundation (3), including an X - axis chip conveying component (41) and a Y - axis chip conveying component (42); The transmission device includes an X - axis drive group, a Y - axis drive group, and a Z - axis drive group. The X - axis drive group includes an X - axis guide rail (12) arranged on the foundation (3). The Y - axis drive group includes a Y - axis guide rail (10) arranged above the X - axis guide rail (12). The X - axis guide rail (12) and the Y - axis guide rail (10) are perpendicular to each other. The lower part of the Y - axis guide rail (10) is slidably connected to the X - axis guide rail (12), and is driven by a motor (8) to rotate a lead screw (9) so that the entire Y - axis guide rail (10) translates along the X - axis guide rail (12). The Z - axis drive group includes a Z - axis guide rail (5) vertically arranged above the Y - axis guide rail (10). The lower end of the Z - axis guide rail (5) is provided with a Z - axis seat (7). The lower part of the Z - axis seat (7) is slidably connected to the Y - axis guide rail (10), and is driven by a motor (8) to rotate a lead screw (9) so that the entire Z - axis seat (7) translates along the Y - axis guide rail (10); A cutting seat (6) is arranged on the Z - axis guide rail (5). The cutting seat (6) is slidably connected to the Z - axis guide rail (5), and is driven by a motor (8) to rotate a lead screw (9) so that the cutting seat (6) ascends and descends along the Z - axis guide rail (5). The saw blade cutting device (1) is fixed on the side vertical surface of the cutting seat (6) and faces the gear blank rotary table (2); The Y - axis chip conveying component (42) is arranged in the middle part of the Y - axis guide rail (10), and its output end extends to the outside of the Y - axis guide rail (10). A chip receiving funnel (11) is arranged below the saw blade cutting device (1). The upper part of the chip receiving funnel (11) faces the saw blade cutting device (1) directly, and the lower part faces the Y - axis chip conveying component (42) directly; In the workpiece processing device, each group of saw blade cutting devices (1) is respectively equipped with a corresponding Y - axis drive group and a Z - axis drive group, and shares one X - axis drive group.

2. A double - headed cutting device for gear blanks according to claim 1, characterized in that the saw blade cutting device (1) includes a cutting saw blade (13), a power motor for driving the cutting saw blade (13) to rotate, and a transmission device connecting the power motor and the cutting saw blade (13), and this transmission device includes a speed - reducing device.

3. A gear blank double - head cutting device according to claim 1, characterized in that the X - axis chip conveying assembly (41) is arranged below the output end of the Y - axis chip conveying assembly (42), and the conveying directions of the X - axis chip conveying assembly (41) and the Y - axis chip conveying assembly (42) are perpendicular to each other.

4. A gear blank cutting method, characterized in that using a gear blank double - head cutting device according to any one of claims 1 - 3, comprising the following steps: A. During operation, place the gear blank to be processed on the gear blank rotary table, and drive the gear blank to rotate by the rotation of the gear blank rotary table; B. Rotate the position of the first cut of the first tooth groove to be processed on the gear blank to the front of the saw blade cutting device on the right; C. Driven by the transmission device, drive the saw blade cutting device on the right to approach the gear blank and cut the first cut of the first tooth groove; D. After cutting, the gear blank rotary table continues to rotate, and the position of the second cut of the first tooth groove rotates to the front of the saw blade cutting device on the left; at the same time, the position of the first cut of the second tooth groove rotates to the front of the saw blade cutting device on the right; E. Driven by the transmission device, drive the saw blade cutting device on the left to approach the gear blank and cut the second cut of the first tooth groove; driven by the transmission device, drive the saw blade cutting device on the right to approach the gear blank and cut the first cut of the second tooth groove; F. At this time, the cutting work of the first tooth groove is completed; and the first cut of the second tooth groove is also synchronously processed.

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