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] The present application relates to the field of machine tool power head, in particular to a hobbing power head with speed regulation. BACKGROUND

[0002] The power head is also called a power tool holder, which refers to a tool holder installed on a power tool tower and driven by a servo motor. The hobbing power head is a kind of power head. The hobbing power head transmits power from the power tool tower to the output shaft on which the hobbing cutter is installed through the input shaft and the transmission mechanism, and drives the hobbing cutter to process the gear of the workpiece through the output shaft.

[0003] The number of workpiece gears is related to the speed of the hobbing cutter. However, the existing hobbing power head does not have a speed regulation function, so a speed changer needs to be arranged between the power tool tower and the hobbing power head to regulate the speed of the hobbing cutter. However, the arrangement of the speed changer will make the overall structure of the hobbing power head larger, which will limit the installation space and make the installation of the hobbing power head limited in size. CONTENT OF THE UTILITY MODEL

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

[0005] The hobbing power head with speed regulation provided by the present application adopts the following technical scheme:

[0006] A hobbing power head with speed regulation, comprising a mounting table, a machine body is installed on the mounting table, an input shaft is vertically arranged on the machine body, the input shaft penetrates the machine body and the mounting table and is rotationally arranged on the machine body, an output shaft is rotationally arranged on the machine body, the output shaft is used for installing a 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, the input shaft drives the output shaft to rotate through the transmission mechanism, the transmission mechanism comprises 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 rotationally arranged on the machine body, the driven bevel gear is installed on one end of the transmission shaft, the driven bevel gear and the driving bevel gear are meshed with each other, the driving gear is installed on 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 rotationally arranged on the machine body, the transmission gear is detachably arranged between the driving gear and the driven gear, and the transmission gear meshes with the driving gear and the driven gear at the same time.

[0007] By adopting the technical scheme, different transmission gears are replaced by disassembling the transmission gear, the driving gear, the driven gear and the transmission gear form a transmission mechanism with different transmission ratios, so that the speed of the hobbing cutter is adjusted without changing the power of the power cutter, without additional installation of a transmission to save installation space and reduce the influence of the installation space on the installation of the hobbing power head.

[0008] Optionally, the body is fixed with a mounting rod, the transmission gear is rotatably sleeved on the mounting rod, and end face bearings are rotatably sleeved on the mounting rod on both sides of the thickness direction of the transmission gear.

[0009] By adopting the technical scheme, the end face bearing can make the rotation of the transmission gear more smooth, and compared with the traditional bearing, the end face bearing is more convenient to disassemble, thereby reducing the influence of bearing installation on the replacement of the transmission gear.

[0010] Optionally, the body is detachably mounted with a cover body, and the cover body covers the transmission gear, the driving gear and the driven gear.

[0011] By adopting the technical scheme, the cover body 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.

[0012] Optionally, one end of the output shaft in the length direction is rotatably arranged on the body, the driven gear is mounted on the output shaft rotatably arranged on one end of the body, the body is mounted with a detachably mounted support table 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.

[0013] By adopting the technical scheme, the support table cooperates with the support bearing to improve the stability of the rotation of the output shaft, and the detachable support table can facilitate the replacement of the hobbing cutter.

[0014] Optionally, the diameter of the end of the output shaft away from the driven gear is smaller than the inner diameter of the support bearing, a shaft sleeve is slidably sleeved on the output shaft, the support bearing is sleeved on the shaft sleeve, the support bearing is sleeved on the output shaft through the shaft sleeve, and a mounting sleeve is threadedly connected to the end of the output shaft away from the driven gear.

[0015] By adopting the technical scheme, the support bearing is mounted on the shaft sleeve, so that the shaft sleeve can carry the bearing to be disassembled on the output shaft.

[0016] Optionally, a reinforcing bolt is threadedly connected to the mounting sleeve and abuts against the output shaft.

[0017] By adopting the technical scheme, the reinforcing bolt can reinforce the mounting sleeve, reduce the probability of the mounting sleeve falling off, and thereby ensure the installation and fixation of the shaft sleeve.

[0018] Optionally, a guide piece is mounted on the body, and a guide groove is formed on the support table corresponding to the guide piece.

[0019] By adopting the above technical scheme, the guide piece cooperates with the guide groove to guide the installation of the support table, and also has a positioning effect during installation.

[0020] Optionally, a positioning bolt is mounted on the body and is threadedly connected to the support table.

[0021] By adopting the above technical scheme, the positioning bolt can be positioned and mounted on the body, thereby achieving the effect of positioning and mounting the support table.

[0022] Optionally, the body is rotatably arranged on the mounting table with the input shaft as an axis.

[0023] By adopting the above technical scheme, the body is rotated on the mounting table, so that the angle of the gear hobbing cutter can be adjusted to perform helical tooth rolling.

[0024] Optionally, a plurality of positioning columns are arranged on the side of the mounting table away from the body.

[0025] By adopting the above technical scheme, the positioning columns enable the mounting table to be positioned on the power cutter tower.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] By disassembling the transmission gear and replacing it with a transmission gear with different 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 cutter tower, without the need for additional installation of a speed changer to save installation space and reduce the influence of the installation space on the installation of the gear hobbing power head.

[0028] The end face bearing enables the transmission gear to rotate more smoothly, and compared with the traditional bearing, the end face bearing is more convenient to disassemble, thereby reducing the influence of bearing installation on the replacement of the transmission gear.

[0029] The cover is used to protect the transmission gear, the driving gear and the driven gear, and also reduces the probability of the transmission gear falling off;

[0030] The support table cooperates with the support bearing to improve the stability of the rotation of the output shaft, and the detachable support table facilitates the replacement of the gear hobbing cutter.

[0031] The body is rotated on the mounting table, so that the angle of the gear hobbing cutter can be adjusted to perform helical tooth rolling.

[0032] The positioning columns enable the mounting table to be positioned on the power cutter tower. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 is a sectional view of the connection between the input shaft and the transmission shaft of an embodiment of the present application.

[0035] Figure 3 is a schematic diagram of the disassembly of the cover of an embodiment of the present application.

[0036] Figure 4 is a schematic diagram of the overall structure of an embodiment of the present application from another perspective.

[0037] Figure 5 is a schematic diagram of the disassembly of the support table of an embodiment of the present application.

[0038] BRIEF DESCRIPTION OF DRAWINGS 1, mounting table; 2, machine 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; 9, support table; 10, support bearing; 11, shaft sleeve; 12, mounting sleeve; 13, reinforcing bolt; 14, positioning ring sleeve; 15, guide fin; 16, guide groove; 17, positioning bolt; 18, observation hole; 19, adjustment groove; 20, adjustment bolt; 21, positioning column. DETAILED DESCRIPTION

[0039] The following will be described in detail below with reference to the accompanying drawings Figures 1-5 The present application will be described in further detail.

[0040] First, it needs to be noted here that in the description of the present application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other orientation words appear, the orientation or position relationship indicated thereby is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; in addition, if the terms "first", "second", "third" and the like appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, interference fit, transition fit and other limiting connections, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; therefore, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0041] The embodiment of the application discloses a hobbing power head with rotating speed adjustment, referring to Figure 1 、 Figure 2 and Figure 3 , comprising a mounting table 1, a body 2 is mounted on the mounting table 1, an input shaft 3 is vertically arranged on the body 2, the input shaft 3 penetrates the body 2 and the mounting table 1 and is rotationally arranged on the body 2, the mounting table 1 is used for mounting the body 2 on a power cutter tower, when the mounting table 1 is mounted on the power cutter tower, the input shaft 3 is inserted into the power cutter tower and connected with a power source of the power cutter tower, the input shaft 3 is driven to rotate by the power source, an output shaft 4 is rotationally arranged on the body 2, the output shaft 4 is used for mounting a hobbing cutter, the input shaft 3 and the output shaft 4 are perpendicular to each other, a transmission mechanism 5 is arranged between the input shaft 3 and the output shaft 4, the input shaft 3 drives the output shaft 4 to rotate through the transmission mechanism 5, the transmission mechanism 5 realizes the conversion of the power direction, 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 rotationally arranged on the body 2, the driven bevel gear 53 is mounted on one end of the transmission shaft 52, the driven bevel gear 53 is meshed with the driving bevel gear 51, the driving gear 54 is mounted on the end of the transmission shaft 52, which is away from the driven bevel gear 53, the driven gear 55 is mounted on the output shaft 4, the transmission gear 56 is rotationally arranged on the body 2, the transmission gear 56 is detachably arranged between the driving gear 54 and the driven gear 55, the transmission gear 56 is meshed with the driving gear 54 and the driven gear 55, different transmission gears 56 are replaced by detaching the transmission gear 56, so that the driving gear 54, the driven gear 55 and the transmission gear 56 form the transmission mechanism 5 with different transmission ratios, thereby the rotating speed of the hobbing cutter is adjusted without changing the power of the power cutter tower, an additional transmission is not needed, the installation space is saved, and the influence of the installation space on the hobbing power head is reduced.

[0042] refer to Figure 1 and Figure 3The installation rod 6 is fixed on the machine body 2, the transmission gear 56 is rotatably sleeved on the installation rod 6, the end face bearing 7 is rotatably sleeved on the installation rod 6 on both sides of the thickness direction of the transmission gear 56, the end face bearing 7 can make the rotation of the transmission gear 56 more smooth, compared with the traditional bearing, the end face bearing 7 is more convenient to disassemble, thereby reducing the influence of bearing installation on the replacement of the transmission gear 56; the cover body 8 is detachably installed on the machine body 2 through bolts, the cover body 8 covers the transmission gear 56, the driving gear 54 and the driven gear 55, the cover body 8 is used for protecting the transmission gear 56, the driving gear 54 and the driven gear 55, and can also reduce the probability of the transmission gear 56 falling off; before installing the transmission gear 56, one end face bearing 7 is sleeved and installed on the installation rod 6, then the transmission gear 56 is sleeved and installed, after the transmission gear 56 is installed, the other end face bearing 7 is sleeved and installed on the installation rod 6, then the cover body 8 is covered and fixed and installed through bolts, after the cover body 8 is covered, the end face bearing 7 installed later is pressed on the side away from the transmission gear 56, and meanwhile, one of the bolts for fixedly installing the cover body 8 is threadedly connected on the installation rod 6, the cover body 8 is reinforced, the cover body 8 is pressed on the end face bearing 7 to limit the disengagement of the end face bearing 7, and the end face bearing 7 is selected as the end face roller bearing in the embodiment.

[0043] Referring to Figure 3 , Figure 3 and Figure 5The one end of the output shaft 4 in the length direction is rotatably arranged on the machine body 2 through a bearing, the driven gear 55 is rotatably arranged on the one end of the output shaft 4 on the machine body 2, the machine body 2 is provided with a detachable supporting table 9 at the end of the output shaft 4 away from the driven gear 55, the supporting bearing 10 is sleeved on the side of the output shaft 4 away from the driven gear 55, the supporting bearing 10 is rotatably arranged on the supporting table 9, the supporting table 9 can improve the stability of the rotation of the output shaft 4 in cooperation with the supporting bearing 10, and the detachable supporting table 9 can facilitate the replacement of the gear hobbing cutter; the diameter of the one end of the output shaft 4 away from the driven gear 55 is smaller than the inner diameter of the supporting bearing 10, the shaft sleeve 11 is slidably sleeved on the output shaft 4, the supporting bearing 10 is sleeved on the shaft sleeve 11, the supporting bearing 10 is sleeved on the output shaft 4 through the shaft sleeve 11, the mounting sleeve 12 is threadedly connected to the one end of the output shaft 4 away from the driven gear 55, and the mounting sleeve 12 abuts against the shaft sleeve 11; by arranging the supporting bearing 10 on the shaft sleeve 11, the shaft sleeve 11 can be disassembled and assembled with the bearing on the output shaft 4; the reinforcing bolt 13 is threadedly connected to the mounting sleeve 12, penetrates through the mounting sleeve 12 and abuts against the output shaft 4, and the arrangement of the reinforcing bolt 13 can reinforce the mounting sleeve 12, reduce the probability that the mounting sleeve 12 is separated, and thus ensure the mounting and fixing of the shaft sleeve 11; the key groove is arranged on the output shaft 4 and is used for mounting a connecting key, the gear hobbing cutter is fixed to the connecting key, the gear hobbing cutter can rotate synchronously with the output shaft 4, the positioning ring sleeve 14 is sleeved on both ends of the key groove of the output shaft 4, the positioning ring sleeve 14 abuts against both sides of the gear hobbing cutter and is used for fixing the position of the gear hobbing cutter, the probability that the gear hobbing cutter deviates is reduced, and the opposite sides of the two positioning ring sleeves 14 abut against the machine body 2 and the supporting table 9 respectively.

[0044] Referring to Figure 4 and Figure 5 , the guide piece 15 is detachably arranged on the machine body 2 through a bolt, the guide groove 16 is arranged on the supporting table 9 and corresponds to the guide piece 15, the guide piece 15 can guide the installation of the supporting table 9 in cooperation with the guide groove 16, and also has a positioning effect during installation; the positioning bolt 17 is arranged on the machine body 2, penetrates through the machine body 2 and is threadedly connected to the supporting table 9, and the arrangement of the positioning bolt 17 can position and install the supporting table 9 on the machine body 2, thereby achieving the positioning and installation effect of the supporting table 9; the observation hole 18 is arranged 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 the rotation of the positioning bolt 17, the one end of the transmission shaft 52 extending to the driven bevel gear 53 penetrates through the machine body 2 and extends into the observation hole 18, the power source can be connected through the observation hole 18, and when the machine body 2 is installed on the cutter tower without power, the gear hobbing cutter can be driven to rotate by an external power source.

[0045] Referring to Figure 4, the body 2 is arranged on the mounting table 1 with the input shaft 3 as the axis, the body 2 is arranged with a plurality of circular arc adjusting grooves 19 around the input shaft 3, the adjusting bolt 20 is arranged in the adjusting groove 19, the adjusting bolt 20 is threadedly connected to the mounting table 1, the adjusting bolt 20 can rotate in the adjusting groove 19 by loosening the adjusting bolt 20, the body 2 can rotate on the mounting table 1 with the axis of the input shaft 3 as the axis, the angle of the hobbing cutter is adjusted, thereby the angle of the hobbing cutter is adjusted, thereby the helical tooth is hobbed.

[0046] With reference to Figure 1 and Figure 4 , the mounting table 1 is provided with a plurality of positioning columns 21 on the side away from the body 2, different types of cutter towers are provided with different slots, only when the positioning column 21 and the slot correspond to each other can the mounting table 1 be mounted on the cutter tower, thereby reducing the mismatching of the cutter tower and the mounting table 1, and the positioning column 21 enables the mounting table 1 to be positioned on the power cutter tower, thereby ensuring the correct docking of the cutter tower and the input shaft 3.

[0047] The implementation principle of the embodiment is that: a suitable transmission gear 56 is selected and mounted on the mounting rod 6, then the cover body 8 is mounted on the body 2, a suitable hobbing cutter is selected, a positioning ring sleeve 14 is first sleeved on the output shaft 4, then the hobbing cutter is sleeved and fixed on the output shaft 4 through the connecting key, then another positioning ring sleeve 14 is sleeved on the output shaft 4, then the shaft sleeve 11 provided with the supporting bearing 10 is sleeved on the output shaft 4, and the supporting table 9 is slidably sleeved outside the supporting bearing 10 and fixed by the mounting positioning bolt 17, then the mounting sleeve 12 is threadedly connected to enable the mounting sleeve 12 to abut against the shaft sleeve 11 and be reinforced by the reinforcing bolt 13, the installation of the hobbing cutter is completed, the mounting table 1 is mounted on the power cutter tower, when the mounting table 1 is mounted, the positioning column 21 needs to be aligned with the slot on the power cutter tower, thereby realizing the mutual connection of the input shaft 3 and the power source in the power cutter tower, the input shaft 3 is driven to rotate by the power source of the power cutter tower, the hobbing cutter is driven to rotate for hobbing by the power transmission of the transmission mechanism 5; when the helical tooth needs to be hobbed, the body 2 is driven to tilt by rotating the adjusting bolt 20, then the adjusting bolt 20 is tightened for hobbing the helical tooth; when the rotating speed of the hobbing cutter needs to be adjusted, the cover body 8 is disassembled to replace the transmission gear 56, when the replacement of the transmission gear 56 cannot adjust to the required speed, the driven gear 55 can also be disassembled, the replacement of the driven gear 55 and the transmission gear 56 is simultaneously performed to realize the adjustment of the rotating speed of the output shaft 4; when the hobbing cutter needs to be replaced, the mounting sleeve 12 is disassembled, then the supporting table 9 and the shaft sleeve 11 are disassembled, the positioning ring sleeve 14 is disassembled, and the replacement of the hobbing cutter is performed.

[0048] It should be noted that the above examples are only used to illustrate the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above examples, it should be understood by those skilled in the art that the skilled in the art can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered in the scope of claims of the present application.

Claims

1. A gear hobbing power head with adjustable speed, comprising a mounting platform (1), a body (2) mounted on the mounting platform (1), an input shaft (3) vertically mounted on the body (2), the input shaft (3) passing through the body (2) and the mounting platform (1) and rotatably mounted on the body (2), an output shaft (4) rotatably mounted 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 provided between the input shaft (3) and the output shaft (4), the rotation of the input shaft (3) driving the output shaft (4) to rotate through the transmission mechanism (5), characterized in that: 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 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) and meshes with the driving bevel gear (51). The driving gear (54) is mounted on the 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) and is detachably mounted between the driving gear (54) and the driven gear (55). The transmission gear (56) simultaneously meshes with the driving gear (54) and the driven gear (55).

2. The gear hobbing power head with speed adjustment according to claim 1, characterized in that: The mounting rod (6) is fixed on the body (2), and the transmission gear (56) is rotatably sleeved on the mounting rod (6). The mounting rod (6) is rotatably sleeved on both sides of the transmission gear (56) in the thickness direction.

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

4. A gear hobbing power head with speed adjustment according to claim 1, characterized in that: One end of the output shaft (4) is rotatably mounted on the machine body (2) along its length. The driven gear (55) is mounted on one end of the output shaft (4) and rotatably mounted on the machine body (2). A detachable support platform (9) is installed on 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). The support bearing (10) is rotatably mounted on the support platform (9).

5. A 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 bushing (11) is slidably sleeved on the output shaft (4). The support bearing (10) is sleeved on the bushing (11). The support bearing (10) is sleeved on the output shaft (4) through the bushing (11). An installation sleeve (12) is threadedly connected to the end of the output shaft (4) away from the driven gear (55). The installation sleeve (12) abuts against the bushing (11).

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

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

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

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

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

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