Linear gear two-way rolling device and method capable of achieving automatic discharging

Abstract

The invention discloses a linear gear two-way rolling device and method capable of achieving automatic discharging, and relates to the technical field of gear machining, and the linear gear two-way rolling device comprises a guide rail movement module arranged on a base and connected with a first rolling mold; the second rolling die is fixedly arranged on the base, and the first rolling die and the second rolling die are parallel in the length direction; a rolling gap is defined among the automatic feeding mechanism, the first rolling die and the second rolling die, and the automatic feeding mechanism is used for conveying blanks to the rolling gap; the rolling dies adopt trapezoidal gear hobs, the first rolling die can move forwards or reversely relative to the second rolling die so as to roll blanks forwards and reversely in a reciprocating mode, the two-way repeated rolling mode is beneficial to high-quality forming of tooth profiles, the forming problems that lugs are too large, the tooth crest filling degree is small and the like are solved, and the product quality is improved. The height of the formed tooth profile is close to that of a target line gear, meanwhile, the application range of equipment is widened, and universality is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and particularly to a wire gear two-way rolling device and method with automatic blanking. Background Art

[0002] A wire gear is a point-contact transmission gear based on the conjugate theory of space curves, with the characteristics of few teeth and a large transmission ratio, and is suitable for lightweight working scenarios.

[0003] The current main manufacturing technologies for wire gears include 3D printing technology, CNC milling technology, CNC gear grinding technology, laser micro-milling technology, etc. The above manufacturing technologies are difficult to meet the requirements of batch production of wire gears in terms of processing efficiency.

[0004] The rolling forming process of wire gears can improve manufacturing efficiency, but has the following deficiencies:

[0005] 1. There are relatively large lugs after the tooth profile of the wire gear is formed, and the tooth tip filling degree is small.

[0006] 2. The rolling method is generally unidirectional rolling and cannot be reverse rolled.

[0007] 3. The versatility is poor and it cannot adapt to the manufacture of wire gears of various sizes.

[0008] 4. It is necessary to manually install the blank and automation has not been achieved.

[0009] In view of this, how to provide a wire gear rolling device that can partially or completely solve the above technical problems is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0010] The purpose of the present invention is to provide a wire gear two-way rolling device and method with automatic blanking to solve the problems existing in the prior art.

[0011] To achieve the above purpose, the present invention provides a wire gear two-way rolling device with automatic blanking, including:

[0012] A guide rail motion module, which is arranged on the base and connected to the first rolling die;

[0013] A second rolling die, which is fixedly arranged on the base, and the first rolling die and the second rolling die are parallel along the length direction;

[0014] An automatic loading mechanism, a rolling gap is defined between the first rolling die and the second rolling die, and the automatic loading mechanism is used to convey the blank to the rolling gap;

[0015] The guide rail motion module can drive the first rolling die to move forward and backward along the rolling gap, and the first rolling die and the second rolling die roll the blank forward and backward to form a tooth profile.

[0016] Furthermore, trapezoidal first rolling teeth are evenly spaced apart on the inner side of the first rolling die, and trapezoidal second rolling teeth are evenly spaced apart on the inner side of the second rolling die. The first rolling teeth correspond to the second rolling teeth and have matching shapes.

[0017] Furthermore, the guide rail motion module includes:

[0018] An outer guide rail is arranged on the base through a first right-angle support, and a bearing seat is arranged on the outer guide rail;

[0019] The inner guide rail is slidably connected to the outer guide rail and is threadedly connected to the lead screw. One end of the lead screw is installed on the bearing seat through a bearing, and the other end is connected to the motor. The first rolling mold is arranged on the inner guide rail, and the motor is used to drive the first rolling mold to move forward and reverse along the rolling gap.

[0020] Furthermore, it also includes:

[0021] A first mold support, fixedly connected to the inner guide rail, wherein the first mold support is provided with a first mounting hole through the inner and outer surfaces, and the first rolling mold is arranged in the first mounting hole;

[0022] A first upper top plate, disposed on the upper surface of the first rolling die and fixed to the first die support through a first upper bolt;

[0023] The first side top plate is disposed on a side surface of the first rolling die and is fixed to the first die support through first side bolts.

[0024] Furthermore, it also includes:

[0025] A second mold support is arranged on the base through a second right-angle support, the second mold support is provided with a second mounting hole through the inner and outer surfaces, and the second rolling mold is arranged in the second mounting hole;

[0026] A second upper top plate, disposed on the upper surface of the second rolling die and fixed to the second die support through a second upper bolt;

[0027] The second side top plate is arranged on the side of the second rolling mold and is fixed to the second mold support through second side bolts.

[0028] Further, the first right-angle support is provided with an adjustment groove penetrating the upper and lower surfaces in a direction perpendicular to the rolling gap, and a plurality of adjustment holes corresponding to the adjustment groove are provided on the base. The first right-angle support is fixed to the base by inserting fastening bolts into the adjustment groove and the adjustment holes.

[0029] Further, the automatic feeding mechanism includes:

[0030] A vibrating bowl, arranged on the base, and the vibrating bowl has a feeding port;

[0031] A slide rail, one end of which is communicated with the feeding port and the other end of which corresponds to the rolling gap; the vibrating bowl can convey the blank to the slide rail through the feeding port, and the blank moves along the slide rail to the rolling gap.

[0032] Further, it further includes:

[0033] A vibrating bowl base, arranged on the lower surface of the vibrating bowl;

[0034] Vibrating bowl support columns, vertically arranged on the base, and the upper ends thereof are connected to the vibrating bowl base;

[0035] A vibrator, arranged in the middle of the vibrating bowl, an arc-shaped vibrating bowl guide rail is defined in the vibrating bowl, one end of the vibrating bowl guide rail is communicated with the feeding port, and the vibrator is used to convey the blank from the vibrating bowl guide rail to the feeding port.

[0036] Further, the slide rail is inclined, its higher end is communicated with the feeding port, and its lower end corresponds to the rolling gap.

[0037] The present invention also provides a method for two-way rolling of wire gears with automatic blanking, applying the automatic blanking two-way rolling device for wire gears, including the following steps:

[0038] S1: The automatic feeding mechanism conveys the blank to the rolling gap, and the blank bites into the rolling gap and is located at the initial rolling position;

[0039] S2: The second rolling die is sequentially divided into a first step, a second step and a third step along the length direction. The first step is close to the initial rolling position. The guide rail movement module drives the first rolling die to move forward along the rolling gap to the junction of the first step and the second step to complete the forming of the first step, and then drives the first rolling die to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the first step;

[0040] S3: The guide rail movement module drives the first rolling die to move forward along the rolling gap to the junction of the second step and the third step to complete the forming of the second step, and then drives the first rolling die to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the second step;

[0041] S4: The guide rail motion module drives the first rolling die to move forward along the rolling gap to the end of the third step to complete the forming of the third step, and then drives the first rolling die to move backward along the rolling gap to the initial rolling position to complete the full tooth of the third step;

[0042] S5: After the blank rolling is completed and the tooth profile is formed, it exits the rolling gap.

[0043] The present invention discloses the following technical effects:

[0044] 1. The rolling die adopts trapezoidal hobbing. The first rolling die can move forward or backward relative to the second rolling die, and then perform forward and reverse reciprocating rolling on the blank. This two-way repeated rolling method is conducive to the high-quality forming of the tooth profile, avoiding forming problems such as too large lug and small tooth top filling degree. The height of the formed tooth profile is close to the target spur gear.

[0045] 2. The rolling die includes a movable first rolling die and a fixed second rolling die, which are respectively fixed in the first die support and the second die support by bolts. When facing the manufacturing requirements of spur gears of different sizes, it can be flexibly disassembled and assembled, and the corresponding die can be replaced. At the same time, the distance between the first rolling die and the second rolling die can also be adjusted, thereby changing the width of the rolling gap, improving the applicable range of the equipment, and having versatility.

[0046] 3. The blank feeding adopts an automatic feeding mechanism. The blank is conveyed from the vibrating bowl to the slide rail through the vibrator, and then slides into the rolling gap by using the slide rail, which can realize automatic blank feeding.

[0047] 4. The gear processing has no undercut, and there will be no interference between the rolling die and the blank, which can avoid forming failure. Brief Description of the Drawings

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0049] Figure 1 It is a schematic structural diagram of the present invention;

[0050] Figure 2 It is a schematic installation diagram of the first rolling die;

[0051] Figure 3 It is a schematic structural diagram of the first rolling die;

[0052] Figure 4 It is a schematic structural diagram of the vibrating bowl;

[0053] Figure 5 Design drawing of wire gear

[0054] Among them, 1. Base; 2. First right-angle support; 3. Inner guide rail; 4. Lead screw; 5. Bearing; 6. Bearing seat; 7. Outer guide rail; 8. First die support; 9. Coupling; 10. Motor; 11. Vibration plate guide rail; 12. Vibrator; 13. Vibration plate; 14. Slide rail; 15. Vibration plate base; 16. Vibration plate support column; 17. First upper bolt; 18. First side bolt; 19. First side top plate; 20. Second die support; 21. First upper top plate; 22. First rolling die; 23. Feeding port Specific implementation manner

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0056] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners

[0057] The embodiment of the present invention provides a wire gear two-way rolling device for automatic blanking, including

[0058] A guide rail movement module, which is arranged on the base 1 and connected to the first rolling die 22

[0059] A second rolling die, which is fixedly arranged on the base 1. The first rolling die 22 and the second rolling die have basically the same structure, and the two are parallel along the length direction

[0060] An automatic feeding mechanism. A rolling gap is defined between the first rolling die 22 and the second rolling die. The automatic feeding mechanism is used to convey the blank to the rolling gap

[0061] The guide rail movement module can drive the first rolling die 22 to move forward and backward along the rolling gap. The first rolling die 22 and the second rolling die perform forward rolling and backward rolling on the blank to form tooth profiles

[0062] In this embodiment, trapezoidal first rolling teeth are evenly spaced on the inner side of the first rolling die 22, and trapezoidal second rolling teeth are evenly spaced on the inner side of the second rolling die. The first rolling teeth and the second rolling teeth correspond to each other and have a matching shape

[0063] In this embodiment, the guide rail movement module includes

[0064] The outer guide rail 7 is arranged on the base 1 through the first right-angle support 2, and a bearing block 6 is arranged on the outer guide rail 7;

[0065] The inner guide rail 3 is slidably connected with the outer guide rail 7 and threadedly connected with the lead screw 4. One end of the lead screw 4 is installed on the bearing block 6 through a bearing 5, and the other end is drivingly connected with a motor 10 through a coupling 9. The first rolling die 22 is arranged on the inner guide rail 3, and the motor 10 is used to drive the first rolling die 22 to move forward and backward along the rolling gap.

[0066] In this embodiment, it further includes:

[0067] The first die support 8 is fixedly connected with the inner guide rail 3. The first die support 8 is provided with a first installation hole penetrating through the inner and outer surfaces, and the first rolling die 22 is arranged in the first installation hole;

[0068] The first upper top plate 21 is arranged on the upper surface of the first rolling die 22 and fixed to the first die support 8 through a first upper bolt 17;

[0069] The first side top plate 19 is arranged on the side surface of the first rolling die 22 and fixed to the first die support 8 through a first side bolt 18.

[0070] In this embodiment, it further includes:

[0071] The second die support 20 is arranged on the base 1 through a second right-angle support. The second die support 20 is provided with a second installation hole penetrating through the inner and outer surfaces, and the second rolling die is arranged in the second installation hole;

[0072] The second upper top plate is arranged on the upper surface of the second rolling die and fixed to the second die support 20 through a second upper bolt;

[0073] The second side top plate is arranged on the side surface of the second rolling die and fixed to the second die support 20 through a second side bolt.

[0074] In this embodiment, the first right-angle support 2 is provided with an adjustment groove penetrating through the upper and lower surfaces in a direction perpendicular to the rolling gap. A plurality of adjustment holes are arranged on the base 1 corresponding to the adjustment groove, and the first right-angle support 2 is fixed to the base 1 by inserting fastening bolts into the adjustment groove and the adjustment holes.

[0075] In this embodiment, the automatic feeding mechanism includes:

[0076] The vibrating bowl 13 is arranged on the base 1, and the vibrating bowl 13 has a feeding port 23;

[0077] The slide rail 14 has one end communicating with the loading port 23 and the other end corresponding to the rolling gap; the vibrating bowl 13 can convey the blanks to the slide rail 14 through the loading port 23, and the blanks move along the slide rail 14 to the rolling gap.

[0078] In this embodiment, it further includes:

[0079] The vibrating bowl base 15 is arranged on the lower surface of the vibrating bowl 13;

[0080] The vibrating bowl support column 16 is vertically arranged on the base 1, and its upper end is connected to the vibrating bowl base 15;

[0081] The vibrator 12 is arranged in the middle of the vibrating bowl 13. An arc-shaped vibrating bowl guide rail 11 is defined in the vibrating bowl 13. One end of the vibrating bowl guide rail 11 communicates with the loading port 23, and the vibrator 12 is used to convey the blanks from the vibrating bowl guide rail 11 to the loading port 23.

[0082] In this embodiment, the slide rail 14 is inclined, with its higher end communicating with the loading port 23 and its lower end corresponding to the rolling gap.

[0083] The present invention also provides a method for double-sided rolling of wire gears with automatic blank feeding, which is applied to the double-sided rolling device for wire gears with automatic blank feeding, and includes the following steps:

[0084] S1: Place the blanks in the vibrating bowl 13. The vibrator 12 generates vibrations, and the internal blanks generate random movements. Some blanks vibrate near the loading port 23, enter the slide rail 14 through the loading port 23, slide downward along the slide rail 14, enter the rolling gap, and the blanks bite into the rolling gap and are located at the initial rolling position;

[0085] S2: The second rolling die is sequentially divided into a first step, a second step, and a third step along the length direction. The first step is close to the initial rolling position. The motor 10 drives the lead screw 4 to rotate, and then drives the first rolling die 22 to move forward along the rolling gap to the junction of the first step and the second step to complete the forming of the first step, and then drives the first rolling die 22 to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the first step;

[0086] S3: The motor 10 drives the first rolling die 22 to move forward along the rolling gap to the junction of the second step and the third step to complete the forming of the second step, and then drives the first rolling die 22 to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the second step;

[0087] S4: The motor 10 drives the first rolling die 22 to move forward along the rolling gap to the end of the third step to complete the forming of the third step, and then drives the first rolling die 22 to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the third step;

[0088] S5: The blank rolling is completed to form a tooth profile, and the rolling gap is exited.

[0089] During the above working process, the second rolling die always remains stationary, and the rolling is only completed by the movement of the first rolling die 22, which can better control the movement accuracy of the two dies to improve the overall rigidity and the smoothness during the machining process.

[0090] The first rolling die 22 moves forward and backward multiple times, and the formed tooth profile can be corrected multiple times. Therefore, the machined line gear is close to the target line gear in terms of tooth profile height, and at the same time, defects such as tooth profile lug can be reduced, with high machining accuracy and good machining quality.

[0091] The above-described embodiment is used to machine a line gear, and the tooth profile of the line gear is detected.

[0092] The design parameters of the line gear are as follows:

[0093] Taking the space cylindrical helix as the contact line of the line gear, its equation is:

[0094]

[0095] where m is the helix radius of the helix; n is the pitch coefficient. Taking the radius of the cylindrical blank obtained from the volume of the target line gear and adding a compensation of 2% to reduce the influence of the flow of the blank material in the axial direction. The design drawing of the line gear is as Figure 5 shown.

[0096] The detection results show that there are no lug defects on the tooth profile of the line gear, the surface accuracy of the tooth profile can reach grade 7 accuracy, and the tooth tip filling degree meets the design requirements.

[0097] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, 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, and therefore should not be construed as a limitation of the present invention.

[0098] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic blanking wire gear two-way rolling device, characterized in that, Including: A guide rail motion module, which is arranged on the base (1) and connected to the first rolling die (22); A second rolling die, which is fixedly arranged on the base (1), and the first rolling die (22) and the second rolling die are parallel along the length direction; An automatic feeding mechanism, a rolling gap is defined between the first rolling die (22) and the second rolling die, and the automatic feeding mechanism is used to convey the blank to the rolling gap; The guide rail motion module can drive the first rolling die (22) to move forward and backward along the rolling gap, and the first rolling die (22) and the second rolling die roll the blank forward and backward to form a tooth profile.

2. The automatic blanking wire gear two-way rolling device according to claim 1, characterized in that, Trapezoidal first rolling teeth are evenly spaced on the inner side of the first rolling die (22), and trapezoidal second rolling teeth are evenly spaced on the inner side of the second rolling die. The first rolling teeth and the second rolling teeth correspond to each other and are shape-matched.

3. An automatic blanking wire gear two-way rolling device according to claim 2, characterized in that, The guide rail motion module includes: An outer guide rail (7), which is arranged on the base (1) through a first right-angle support (2), and a bearing seat (6) is arranged on the outer guide rail (7); An inner guide rail (3), which is slidably connected to the outer guide rail (7) and threadedly connected to a lead screw (4). One end of the lead screw (4) is installed on the bearing seat (6) through a bearing (5), and the other end is drivingly connected to a motor (10). The first rolling die (22) is arranged on the inner guide rail (3), and the motor (10) is used to drive the first rolling die (22) to move forward and backward along the rolling gap.

4. An automatic blanking wire gear two-way rolling device according to claim 3, characterized in that, It also includes: A first die support (8), which is fixedly connected to the inner guide rail (3). The first die support (8) is provided with a first mounting hole penetrating through the inner and outer surfaces, and the first rolling die (22) is arranged in the first mounting hole; A first upper top plate (21), which is arranged on the upper surface of the first rolling die (22) and fixed to the first die support (8) through a first upper bolt (17); A first side top plate (19), which is arranged on the side of the first rolling die (22) and fixed to the first die support (8) through a first side bolt (18).

5. An automatic blanking wire gear two-way rolling device according to claim 4, characterized in that, It also includes: A second die support (20), which is arranged on the base (1) through a second right-angle support. The second die support (20) is provided with a second mounting hole penetrating through the inner and outer surfaces, and the second rolling die is arranged in the second mounting hole; A second upper top plate, which is arranged on the upper surface of the second rolling die and fixed to the second die support (20) through a second upper bolt; A second side top plate, which is arranged on the side of the second rolling die and fixed to the second die support (20) through a second side bolt.

6. An automatic blanking wire gear two-way rolling device according to claim 3, characterized in that, The first right-angle support (2) is provided with an adjustment slot penetrating through the upper and lower surfaces in a direction perpendicular to the rolling gap. A plurality of adjustment holes are provided on the base (1) corresponding to the adjustment slot. The first right-angle support (2) is fixed to the base (1) by inserting fastening bolts into the adjustment slot and the adjustment holes.

7. An automatic blanking wire gear two-way rolling device according to claim 1, characterized in that, The automatic feeding mechanism includes: A vibrating bowl (13), which is arranged on the base (1), and the vibrating bowl (13) has a feeding port (23); The slide rail (14) has one end communicating with the loading port (23) and the other end corresponding to the rolling gap; the vibrating bowl (13) can convey the blank to the slide rail (14) through the loading port (23), and the blank moves along the slide rail (14) to the rolling gap.

8. An automatic blanking wire gear two-way rolling device according to claim 7, characterized in that, It further includes: A vibrating bowl base (15) disposed on the lower surface of the vibrating bowl (13); Vibrating bowl support columns (16) vertically disposed on the base (1), with their upper ends connected to the vibrating bowl base (15); A vibrator (12) disposed in the middle of the vibrating bowl (13). An arc-shaped vibrating bowl guide rail (11) is defined within the vibrating bowl (13). One end of the vibrating bowl guide rail (11) communicates with the loading port (23), and the vibrator (12) is used to convey the blank from the vibrating bowl guide rail (11) to the loading port (23).

9. An automatic blanking wire gear two-way rolling device according to claim 8, characterized in that, The slide rail (14) is inclined, with its higher end communicating with the loading port (23) and its lower end corresponding to the rolling gap.

10. A two-way rolling method of a wire gear for automatic blanking, characterized in that, Applying the automatic blanking linear gear double-sided rolling device according to any one of claims 1-9, comprising the following steps: S1: The automatic feeding mechanism conveys the blank to the rolling gap, and the blank bites into the rolling gap and is located at the initial rolling position; S2: The second rolling die is sequentially divided into a first step, a second step, and a third step along the length direction. The first step is close to the initial rolling position. The guide rail movement module drives the first rolling die (22) to move forward along the rolling gap to the junction of the first step and the second step to complete the forming of the first step, and then drives the first rolling die (22) to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the first step; S3: The guide rail movement module drives the first rolling die (22) to move forward along the rolling gap to the junction of the second step and the third step to complete the forming of the second step, and then drives the first rolling die (22) to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the second step; S4: The guide rail movement module drives the first rolling die (22) to move forward along the rolling gap to the end of the third step to complete the forming of the third step, and then drives the first rolling die (22) to move backward along the rolling gap to the initial rolling position to complete the tooth finishing of the third step; S5: The blank rolling is completed and a tooth profile is formed, and the blank exits the rolling gap.

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