Hobbing power head with rotating speed adjusting function

Abstract

The gear hobbing power head comprises a mounting table, a machine body is mounted on the mounting table, an input shaft and an output shaft are rotationally arranged on the machine body, the output shaft is used for mounting a gear hobbing cutter, the input shaft and the output shaft are perpendicular to each other, a transmission mechanism is arranged between the input shaft and the output shaft, and the transmission mechanism is arranged on the machine body. The input shaft drives the output shaft to rotate through the transmission mechanism; the transmission mechanism comprises a driving bevel gear installed on the input shaft, a transmission shaft rotationally arranged on the machine body, a driven bevel gear installed at one end of the transmission shaft, a driving gear installed at the end, away from the driven bevel gear, of the transmission shaft, a driven gear and a transmission gear rotationally arranged on the machine body. The driven bevel gear installed on the output shaft is meshed with the driving bevel gear, the transmission gear is detachably arranged between the driving gear and the driven gear, and the transmission gear is meshed with the driving gear and the driven gear at the same time. The gear hobbing power head has the effect of reducing the influence of the mounting space on the mounting of the gear hobbing power head.

Description

Technical Field

[0001] This application relates to the field of machine tool power heads, and particularly to a hobbing power head with rotational speed adjustment. Background Art

[0002] The power head, also known as the power tool holder, refers to a tool holder installed on the power turret and driven by a servo motor. The hobbing power head is a type of power head. The hobbing power head transmits the power of the power turret to the output shaft equipped with a hobbing cutter through the input shaft and the transmission mechanism, and drives the hobbing cutter to process gears on the workpiece through the output shaft.

[0003] The number of workpiece gears is related to the rotational speed of the hobbing cutter. However, the existing hobbing power heads do not have a speed adjustment function. Therefore, a transmission needs to be set between the power turret and the hobbing power head to achieve the adjustment of the rotational speed of the hobbing cutter. However, the setting of the transmission will make the overall structure of the hobbing power head larger, which limits the installation space and restricts the installation space size of the hobbing power head. Summary of the Invention

[0004] In order to reduce the influence of the installation space on the installation of the hobbing power head, this application provides a hobbing power head with rotational speed adjustment.

[0005] A hobbing power head with rotational speed adjustment provided by this application adopts the following technical solution: A hobbing power head with rotational speed adjustment includes an installation table, on which a body is installed. A vertical input shaft is provided on the body. The input shaft penetrates the body and the installation table and is rotatably arranged on the body. An output shaft is rotatably arranged on the body. The output shaft is used to install the hobbing cutter. The output shaft and the input shaft are perpendicular to each other. A transmission mechanism is arranged between the input shaft and the output shaft. The input shaft rotates to drive the output shaft to rotate through the transmission mechanism. The transmission mechanism includes a driving bevel gear, a transmission shaft, a driven bevel gear, a driving gear, a driven gear, and a transmission gear. The driving bevel gear is installed on the input shaft. The transmission shaft is rotatably arranged on the body. The driven bevel gear is installed at one end of the transmission shaft. The driven bevel gear meshes with the driving bevel gear. The driving gear is installed at the end of the transmission shaft away from the driven bevel gear. The driven gear is installed on the output shaft. The transmission gear is rotatably arranged on the body and is detachably arranged between the driving gear and the driven gear. The transmission gear meshes with the driving gear and the driven gear at the same time.

[0006] By adopting the above technical solution, by disassembling the transmission gear and replacing it with transmission gears of different numbers of teeth, a transmission mechanism with different transmission ratios is formed by the driving gear, the driven gear, and the transmission gear, so as to adjust the rotational speed of the hobbing cutter without changing the power of the power turret, saving the installation space without additional installation of a transmission, and reducing the influence of the installation space on the installation of the hobbing power head.

[0007] Optionally, a mounting rod is fixedly provided on the machine body, the transmission gear is rotatably sleeved on the mounting rod, and end face bearings are rotatably sleeved on both sides of the mounting rod in the thickness direction of the transmission gear.

[0008] By adopting the above technical solution, the end face bearing can make the rotation of the transmission gear more smooth. Compared with the traditional bearing, the disassembly of the end face bearing is more convenient, thereby reducing the influence of bearing installation on the replacement of the transmission gear.

[0009] Optionally, a cover body is detachably installed on the machine body, and the cover body covers the transmission gear, the driving gear and the driven gear.

[0010] By adopting the above technical solution, the cover body is used to protect the transmission gear, the driving gear and the driven gear, and at the same time can also reduce the probability of the transmission gear falling off.

[0011] Optionally, one end of the output shaft in the length direction is rotatably arranged on the machine body, the driven gear is installed at one end of the output shaft rotatably arranged on the machine body, a support table is detachably installed on the machine body at the end of the output shaft away from the driven gear, a support bearing is sleeved on the side of the output shaft away from the driven gear, and the support bearing is rotatably arranged on the support table.

[0012] By adopting the above technical solution, the support table and the support bearing can improve the rotation stability of the output shaft, and the detachable support table can facilitate the replacement of the hobbing cutter.

[0013] Optionally, the diameter of one end of the output shaft away from the driven gear is smaller than the inner diameter of the support bearing. A sleeve is slidably sleeved on the output shaft, the support bearing is sleeved on the sleeve, the support bearing is sleeved on the output shaft through the sleeve, and a mounting sleeve is threadedly connected to the end of the output shaft away from the driven gear, and the mounting sleeve abuts against the sleeve.

[0014] By adopting the above technical solution, by installing the support bearing on the sleeve, it is convenient for the sleeve to carry the bearing to be disassembled and assembled on the output shaft.

[0015] Optionally, a reinforcing bolt is threadedly connected to the mounting sleeve, and the reinforcing bolt penetrates through the mounting sleeve and abuts against the output shaft.

[0016] By adopting the above technical solution, the setting of the reinforcing bolt can reinforce the mounting sleeve, reduce the probability of the mounting sleeve detaching, and thus ensure the installation and fixation of the sleeve.

[0017] Optionally, a guide piece is installed on the machine body, and a guide groove is provided on the support table corresponding to the guide piece.

[0018] By adopting the above technical solution, the guide piece and the guide groove can guide the installation of the support table, and at the same time also play a positioning effect during installation.

[0019] Optionally, a positioning bolt is installed on the machine body, and the positioning bolt passes through the machine body and is threadedly connected to the support platform.

[0020] By adopting the above technical solution, the setting of the positioning bolts can position the support platform on the machine body, achieving the effect of positioning the support platform.

[0021] Optionally, the machine body is rotatably arranged on a mounting platform with the input shaft as an axis.

[0022] By adopting the above technical solution, the machine body is rotated on the mounting table, and the angle of the gear hobbing cutter can be adjusted, so as to perform rolling washing of the helical teeth.

[0023] Optionally, a plurality of positioning columns are provided on the side of the mounting platform facing away from the machine body.

[0024] By adopting the above technical solution, the setting of the positioning column enables the mounting platform to be positioned on the power turret.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: By removing the transmission gear and replacing it with a transmission gear with a different number of teeth, the driving gear, the driven gear and the transmission gear form a transmission mechanism with different transmission ratios, so that the speed of the gear hobbing cutter can be adjusted without changing the power of the power turret. There is no need to install an additional transmission, which saves installation space and reduces the impact of the installation space on the installation of the gear hobbing power head. The end bearing can make the transmission gear rotate more smoothly. Compared with traditional bearings, the end bearing is easier to disassemble, thereby reducing the impact of bearing installation on the replacement of transmission gears. The cover is used to protect the transmission gear, the driving gear and the driven gear, and can also reduce the probability of the transmission gear falling off; The support table and the support bearing can improve the stability of the output shaft rotation. At the same time, the detachable support table can facilitate the replacement of the gear hobbing cutter. The machine body rotates on the mounting table, and the angle of the gear hobbing cutter can be adjusted to perform rolling washing of the helical teeth; The setting of the positioning column enables the mounting table to be positioned on the power turret. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view of the connection between the input shaft and the transmission shaft of the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of disassembling the cover body of the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the overall structure from another perspective of the embodiment of the present application.

[0030] Figure 5 It is a disassembly schematic diagram of the support table of the embodiment of the present application.

[0031] Explanation of reference numerals: 1, mounting table; 2, body; 3, input shaft; 4, output shaft; 5, transmission mechanism; 51, driving bevel gear; 52, transmission shaft; 53, driven bevel gear; 54, driving gear; 55, driven gear; 56, transmission gear; 6, mounting rod; 7, end face bearing; 8, cover body; 9, support table; 10, support bearing; 11, bushing; 12, mounting sleeve; 13, reinforcing bolt; 14, positioning ring sleeve; 15, guiding piece; 16, guiding groove; 17, positioning bolt; 18, observation hole; 19, adjusting groove; 20, adjusting bolt; 21, positioning column. Detailed implementation manners

[0032] The following further describes the present application in detail with reference to the Figures 1-5 accompanying drawings.

[0033] First of all, it should be noted here that: in the description of the present application, if orientation terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of 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, so it cannot be understood as a limitation to the present application; in addition, if numerical quantifiers such as "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the present application, unless otherwise clearly specified and limited, if terms such as "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an interference fit, a transition fit and other limiting connections, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium; therefore, for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0034] The embodiment of the present application discloses a hobbing power head with rotational speed adjustment. Refer to Figure 1 , Figure 2 and Figure 3, including an installation platform 1, on which a machine body 2 is installed. A input shaft 3 is vertically arranged on the machine body 2. The input shaft 3 penetrates through the machine body 2 and the installation platform 1 and is rotatably arranged on the machine body 2. The installation platform 1 is used to install the machine body 2 on a power turret. When the installation platform 1 is installed on the power turret, the input shaft 3 is inserted into the power turret and connected to the power source of the power turret. The input shaft 3 is driven to rotate by the power source. An output shaft 4 is rotatably arranged on the machine body 2. The output shaft 4 is used to install a hobbing cutter. The output shaft 4 and the input shaft 3 are perpendicular to each other. A transmission mechanism 5 is arranged between the input shaft 3 and the output shaft 4. The rotation of the input shaft 3 drives the output shaft 4 to rotate through the transmission mechanism 5. The conversion of the power direction is realized through the transmission mechanism 5. The transmission mechanism 5 includes a driving bevel gear 51, a transmission shaft 52, a driven bevel gear 53, a driving gear 54, a driven gear 55 and a transmission gear 56. The driving bevel gear 51 is installed on the input shaft 3. The transmission shaft 52 is rotatably arranged on the machine body 2. The driven bevel gear 53 is installed at one end of the transmission shaft 52. The driven bevel gear 53 meshes with the driving bevel gear 51. The driving gear 54 is installed at the end of the transmission shaft 52 away from the driven bevel gear 53. The driven gear 55 is installed on the output shaft 4. The transmission gear 56 is rotatably arranged on the machine body 2. The transmission gear 56 is detachably arranged between the driving gear 54 and the driven gear 55. The transmission gear 56 meshes with the driving gear 54 and the driven gear 55 at the same time. By disassembling the transmission gear 56 and replacing the transmission gear 56 with different numbers of teeth, the driving gear 54, the driven gear 55 and the transmission gear 56 form a transmission mechanism 5 with different transmission ratios, so as to adjust the rotation speed of the hobbing cutter without changing the power of the power turret, saving the installation space without installing an additional transmission and reducing the influence of the installation space on the installation of the hobbing power head.

[0035] Refer to Figure 1 and Figure 3, a mounting rod 6 is fixedly provided on the machine body 2, and a transmission gear 56 is rotatably sleeved on the mounting rod 6. End bearings 7 are rotatably sleeved on both sides of the mounting rod 6 in the thickness direction of the transmission gear 56. The end bearings 7 can make the rotation of the transmission gear 56 smoother. Compared with traditional bearings, the disassembly of the end bearings 7 is more convenient, thereby reducing the impact of the bearing installation on the replacement of the transmission gear 56; a cover body 8 is detachably installed on the machine body 2 by bolts, and the cover body 8 covers the transmission gear 56, the driving gear 54 and the driven gear 55. The cover body 8 is used to protect the transmission gear 56, the driving gear 54 and the driven gear 55, and can also reduce the transmission gear 56 from being disengaged. The probability of falling off; before installing the transmission gear 56, first sleeve an end bearing 7 on the mounting rod 6, and then sleeve and install the transmission gear 56. After the transmission gear 56 is installed, sleeve another end bearing 7 on the mounting rod 6, and then cover the cover 8 and fix it with bolts. After the cover 8 is covered, it is pressed on the side of the end bearing 7 installed later away from the transmission gear 56. At the same time, the cover 8 is threadedly connected to the mounting rod 6 through one of the bolts for fixing the cover 8. The cover 8 is reinforced so that the cover 8 is pressed on the end bearing 7 to limit the detachment of the end bearing 7. In this embodiment, the end bearing 7 uses an end roller bearing.

[0036] Reference Figure 3 , Figure 3 and Figure 5, one end of the output shaft 4 in the length direction is rotatably arranged on the machine body 2 through a bearing, and the driven gear 55 is installed on one end of the output shaft 4 rotatably arranged on the machine body 2. A support platform 9 is detachably installed on the machine body 2 at the end of the output shaft 4 away from the driven gear 55. A support bearing 10 is sleeved on the side of the output shaft 4 away from the driven gear 55, and the support bearing 10 is rotatably arranged on the support platform 9. The support platform 9 cooperating with the support bearing 10 can improve the rotational stability of the output shaft 4. At the same time, the detachable support platform 9 can facilitate the replacement of the hobbing cutter; the diameter of one end of the output shaft 4 away from the driven gear 55 is smaller than the inner diameter of the support bearing 10. A sleeve 11 is slidably sleeved on the output shaft 4, and the support bearing 10 is sleeved on the sleeve 11. The support bearing 10 is sleeved on the output shaft 4 through the sleeve 11. A mounting sleeve 12 is threadedly connected to one end of the output shaft 4 away from the driven gear 55, and the mounting sleeve 12 abuts against the sleeve 11. By installing the support bearing 10 on the sleeve 11, it is convenient for the sleeve 11 to disassemble and assemble the bearing on the output shaft 4; a reinforcing bolt 13 is threadedly connected to the mounting sleeve 12, and the reinforcing bolt 13 penetrates through the mounting sleeve 12 and abuts against the output shaft 4. The setting of the reinforcing bolt 13 can reinforce the mounting sleeve 12 and reduce the probability of the mounting sleeve 12 detaching, thereby ensuring the installation and fixation of the sleeve 11; a keyway is provided on the output shaft 4, and the keyway is used to install a connection key. Through the connection key and the hobbing cutter being fixed to each other, the hobbing cutter can rotate synchronously with the output shaft 4. Positioning collar sleeves 14 are sleeved on both ends of the output shaft 4 at the keyway. The positioning collar sleeves 14 abut against both sides of the hobbing cutter and are used to fix the position of the hobbing cutter and reduce the probability of the hobbing cutter shifting. The opposite sides of the two positioning collar sleeves 14 abut against the machine body 2 and the support platform 9 respectively.

[0037] Refer to Figure 4 and Figure 5 , a guide piece 15 is detachably installed on the machine body 2 through bolts. A guide groove 16 is provided on the support platform 9 corresponding to the guide piece 15. The guide piece 15 cooperating with the guide groove 16 can guide the installation of the support platform 9 and also play a positioning effect during installation; a positioning bolt 17 is installed on the machine body 2. The positioning bolt 17 penetrates through the machine body 2 and is threadedly connected to the support platform 9. The setting of the positioning bolt 17 can position and install the support platform 9 on the machine body 2 and play a positioning and installation effect for the support platform 9; an observation hole 18 is provided on the machine body 2 at the installation position of the positioning bolt 17. The observation hole 18 can facilitate the observation of the positioning bolt 17 and also facilitate the rotation of the positioning bolt 17. One end of the transmission shaft 52 installed with the driven bevel gear 53 extends through the machine body 2 and extends into the observation hole 18. Through the observation hole 18, a power source can be connected. When the machine body 2 is installed on a turret without power, the hobbing cutter can be driven to rotate by an external power source.

[0038] Refer to Figure 4The machine body 2 is rotatably arranged on the mounting platform 1 with the input shaft 3 as the axis. The machine body 2 takes the input shaft 3 as the center of the circle, and a plurality of arc-shaped adjusting grooves 19 are opened in the circumference of the input shaft 3. An adjusting bolt 20 is passed through the adjusting groove 19, and the adjusting bolt 20 is threadedly connected to the mounting platform 1. When the adjusting bolt 20 is loosened, the adjusting bolt 20 can rotate in the adjusting groove 19, so that the machine body 2 rotates on the mounting platform 1 with the axis of the input shaft 3 as the axis, and the angle of the gear hobbing cutter is adjusted, thereby adjusting the angle of the gear hobbing cutter, so as to roll and wash the helical teeth.

[0039] Reference Figure 1 and Figure 4 A plurality of positioning columns 21 are provided on the side of the mounting platform 1 facing away from the machine body 2. Different types of turrets are provided with different slots. The mounting platform 1 can be installed on the turret only when the positioning columns 21 and the slots correspond to each other, thereby reducing the mismatch between the turret and the mounting platform 1. At the same time, the setting of the positioning columns 21 enables the mounting platform 1 to be positioned on the power turret, thereby ensuring the correct docking of the turret and the input shaft 3.

[0040] The implementation principle of the embodiment of the present application is as follows: select a suitable transmission gear 56 and install the transmission gear 56 on the mounting rod 6, then install the cover body 8 on the machine body 2, select a suitable gear hobbing cutter, first sleeve a positioning ring sleeve 14 on the output shaft 4, then sleeve the gear hobbing cutter on the output shaft 4 through a connecting key, then sleeve another positioning ring sleeve 14 on the output shaft 4, then sleeve the sleeve 11 with the support bearing 10 on the output shaft 4, and slide the support platform 9 on the outside of the support bearing 10, and fix the support platform 9 by installing the positioning bolts 17, then thread the mounting sleeve 12 so that the mounting sleeve 12 abuts against the sleeve 11 and reinforces the mounting sleeve 12 through the reinforcing bolts 13 to complete the installation of the milling cutter, and install the mounting platform 1 on the power turret. When the mounting platform 1 is installed, the positioning column 21 needs to be aligned with the positioning column 21 on the power turret. The slots are aligned, so that the input shaft 3 is connected to the power source in the power turret, and the input shaft 3 is driven to rotate by the power source of the power turret, and the gear hobbing cutter is driven to rotate by the power transmission of the transmission mechanism 5 to perform gear hobbing; when it is necessary to roll helical teeth, the gear hobbing cutter is driven to tilt by loosening the adjusting bolt 20 and rotating the machine body 2, and then the adjusting bolt 20 is tightened to perform helical gear hobbing; when it is necessary to adjust the rotation speed of the gear hobbing cutter, the cover body 8 is removed and the transmission gear 56 is replaced. When the required speed cannot be adjusted by replacing the transmission gear 56 alone, the driven gear 55 can also be removed. The output shaft 4 speed can be adjusted by replacing the driven gear 55 and the transmission gear 56 at the same time; when it is necessary to replace the gear hobbing cutter, the mounting sleeve 12 is first removed, and then the support platform 9 and the shaft sleeve 11 are removed, and the positioning ring sleeve 14 is removed before replacing the gear hobbing cutter.

[0041] It should be noted that the above embodiments are only used to illustrate the present application and do not limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the art can still modify the present application or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A gear hobbing power head with speed adjustment, comprising a mounting platform (1), a body (2) being mounted on the mounting platform (1), an input shaft (3) being vertically arranged on the body (2), the input shaft (3) penetrating the body (2) and the mounting platform (1) and being rotatably arranged on the body (2), an output shaft (4) being rotatably arranged on the body (2), the output shaft (4) being used to mount a gear hobbing cutter, the output shaft (4) and the input shaft (3) being perpendicular to each other, a transmission mechanism (5) being arranged between the input shaft (3) and the output shaft (4), the input shaft (3) rotating to drive the output shaft (4) to rotate through the transmission mechanism (5), and characterized in that: The transmission mechanism (5) comprises a driving bevel gear (51), a transmission shaft (52), a driven bevel gear (53), a driving gear (54), a driven gear (55) and a transmission gear (56); the driving bevel gear (51) is mounted on the input shaft (3); the transmission shaft (52) is rotatably mounted on the machine body (2); the driven bevel gear (53) is mounted on one end of the transmission shaft (52); the driven bevel gear (53) and the driving bevel gear (51) are meshed with each other; the driving gear (54) is mounted on an end of the transmission shaft (52) away from the driven bevel gear (53); the driven gear (55) is mounted on the output shaft (4); the transmission gear (56) is rotatably mounted on the machine body (2); the transmission gear (56) is detachably mounted between the driving gear (54) and the driven gear (55); the transmission gear (56) meshes with the driving gear (54) and the driven gear (55) at the same time.

2. A gear hobbing power head with speed adjustment according to claim 1, characterized in that: A mounting rod (6) is fixedly provided on the machine body (2), the transmission gear (56) is rotatably sleeved on the mounting rod (6), and end face bearings (7) are rotatably sleeved on both sides of the mounting rod (6) in the thickness direction of the transmission gear (56).

3. The gear hobbing power head with speed adjustment according to claim 2, characterized in that: A cover body (8) is detachably mounted on the machine body (2), and the cover body (8) covers the transmission gear (56), the driving gear (54) and the driven gear (55).

4. The gear hobbing power head with speed adjustment according to claim 1, characterized in that: One end of the output shaft (4) in the length direction is rotatably arranged on the machine body (2); the driven gear (55) is mounted on the output shaft (4) and rotatably arranged on one end of the machine body (2); a detachably mounted support platform (9) is mounted on the machine body (2) at one end of the output shaft (4) away from the driven gear (55); a support bearing (10) is sleeved on the side of the output shaft (4) away from the driven gear (55); and the support bearing (10) is rotatably arranged on the support platform (9).

5. The gear hobbing power head with speed adjustment according to claim 4, characterized in that: The diameter of the end of the output shaft (4) away from the driven gear (55) is smaller than the inner diameter of the support bearing (10); a sleeve (11) is provided on the sliding sleeve of the output shaft (4); the support bearing (10) is sleeved on the sleeve (11); the support bearing (10) is sleeved on the output shaft (4) through the sleeve (11); the end of the output shaft (4) away from the driven gear (55) is threadedly connected to a mounting sleeve (12); the mounting sleeve (12) abuts against the sleeve (11).

6. The gear hobbing power head with speed adjustment according to claim 5, characterized in that: A reinforcing bolt (13) is threadedly connected to the mounting sleeve (12), and the reinforcing bolt (13) passes through the mounting sleeve (12) and abuts against the output shaft (4).

7. The gear hobbing power head with speed adjustment according to claim 4, characterized in that: A guide piece (15) is installed on the machine body (2), and a guide groove (16) is provided on the support platform (9) corresponding to the guide piece (15).

8. The gear hobbing power head with speed adjustment according to claim 7, characterized in that: A positioning bolt (17) is installed on the machine body (2), and the positioning bolt (17) passes through the machine body (2) and is threadedly connected to the support platform (9).

9. The gear hobbing power head with speed adjustment according to claim 1, characterized in that: The machine body (2) is rotatably arranged on the mounting platform (1) with the input shaft (3) as an axis.

10. The gear hobbing power head with speed adjustment according to claim 1, characterized in that: A plurality of positioning columns (21) are arranged on the side of the mounting platform (1) facing away from the machine body (2).

Images