Tool rest of straight bevel gear milling machine and gear milling machine

Abstract

The utility model provides a straight bevel gear milling machine knife rest and a gear milling machine, and belongs to the technical field of machinery. The problem that an existing knife rest is complex in structure is solved. The gear milling machine comprises a machine body, a supporting table, two tool rests and a spindle box, the supporting table, the tool rests and the spindle box are arranged on the machine body, the spindle box is located on the right side of the supporting table, the tool rests are located between the spindle box and the supporting table, and the two tool rests are symmetrically arranged up and down; the tool rest comprises a rotating shaft obliquely arranged on the right side of the supporting table, one end of the rotating shaft is used for installing a cutter head, a positioning base is installed on the supporting table, a worm is horizontally and rotationally arranged on the positioning base, and the axis of the worm extends front and back. The worm is located between the rotating shaft and the supporting table, the rotating shaft is rotationally arranged on the positioning base through a first bearing, and the rotating shaft is fixedly sleeved with a worm gear meshed with the worm; a motor used for driving the worm to rotate is further fixed to the positioning base. The utility model has a simple structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a tool holder for a straight bevel gear milling machine, in particular to a straight bevel gear milling machine. Background Art

[0002] Gear milling machine is a gear processing equipment that adopts CNC technology, mainly used for finishing of high-precision bevel gears.

[0003] Existing gear milling machines, such as a cutter tilting and rotating mechanism for a spiral bevel gear milling machine without a cradle disclosed in the China Patent Library (application number: 201110067773.8), include a cutter disc driving drum, on one end face of which a milling cutter mounting disk is eccentrically mounted, an outer gear ring is mounted on the outer circle of the cutter disc driving drum, and a gear shaft driven by a drum servo motor is meshed and driven on the outer gear ring; a mounting flange is also fixedly provided on the cutter disc driving drum, the axis of the mounting flange deviates from the axis direction of the cutter disc driving drum, and an angle α less than 90° is formed between the two axes, a cutter tilting body is fixedly mounted on the mounting flange, and the cutter tilting body has an inner mounting end face that is matched with the mounting flange and an outer mounting end face for mounting the milling cutter mounting disk, and the inner and outer mounting ends are connected to each other. The end faces intersect, and the angle between the axis of the inner mounting end face and the axis of the outer mounting end face is also α, so that the inclination angle of the axis of the milling cutter mounting disk can be adjusted between 0° and 2α; the milling cutter mounting disk is installed in the cutter tilting body through a bearing seat that rotates with its rotating shaft, and an outer gear ring is coaxially fixed on the outer edge of the milling cutter mounting disk, and the outer gear ring is connected to the cutter disc servo motor through a gear transmission mechanism of meshing transmission. The gear transmission mechanism includes a primary reduction mechanism assembled in the cutter disc drive roller and a final reduction mechanism installed on the cutter tilting body, an output bevel gear is provided in the primary reduction mechanism, and an input bevel gear is provided in the final reduction mechanism, the output bevel gear is meshed with the input bevel gear, the output bevel gear is coaxially arranged with the mounting flange, and the input bevel gear is arranged parallel to the axis of the milling cutter mounting disk.

[0004] In the above-mentioned cutter tilting and rotating mechanism, the cutter disc servo motor and the milling cutter mounting disc are driven by an extremely complex gear transmission mechanism, and the overall structure is complex and the stability is poor. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a straight bevel gear milling machine tool holder and a gear milling machine with simple structure.

[0006] One of the purposes of the utility model can be achieved through the following technical scheme: a tool holder for a straight bevel gear milling machine, the milling machine includes a bed and a support platform arranged on the bed, the tool holder includes a rotating shaft obliquely arranged on the right side of the support platform, one end of the rotating shaft is used to install the cutter disc, and is characterized in that a positioning seat is installed on the support platform, a worm is horizontally rotatably arranged on the positioning seat, and the axis of the worm extends forward and backward; the worm is located between the rotating shaft and the support platform, the rotating shaft is rotatably arranged on the positioning seat through a first bearing, and a worm wheel meshing with the worm is sleeved and fixed on the rotating shaft; a motor for driving the worm to rotate is also fixed on the positioning seat.

[0007] The positioning seat is arranged on one side of the support platform, and the motor arranged on the positioning seat directly drives the cutter disc connected to the rotating shaft to rotate by using a worm gear transmission, so as to effectively simplify the transmission structure. It has the advantages of simple structure, stable operation, low noise and high working precision.

[0008] In the above-mentioned straight bevel gear milling machine tool holder, the above-mentioned positioning seat is provided with a mounting hole and a mounting barrel, and the mounting barrel is located on the right side of the mounting hole; the worm is rotatably arranged in the mounting hole and the two are coaxially arranged, the outer end of the worm extends out of the mounting hole and is connected to the motor; the rotating shaft and the first bearing are both arranged in the mounting barrel, and the rotating shaft and the mounting barrel are coaxially arranged, the outer end of the rotating shaft extends out of the mounting barrel and is connected to the cutter disc, and a clearance hole is provided on the right side of the mounting hole to allow the right side of the worm to extend into the mounting barrel and engage with the worm wheel. With the cooperation of the mounting hole and the mounting barrel, the installation of the rotating shaft and the worm can be further simplified.

[0009] In the above-mentioned straight bevel gear milling machine tool holder, the mounting hole and the mounting cylinder are both closed at one end and open at the other end, and the other ends of the mounting hole and the mounting cylinder are both inserted and sealed with a stopper sleeve, and the two stopper sleeves are respectively sleeved on the rotating shaft and the worm, and the inner walls of the two stopper sleeves are respectively sealed with the rotating shaft and the worm through oil seals. With the cooperation of the stopper sleeve and the oil seal, a closed cavity is formed between the mounting hole and the positioning cylinder, and external dust and other impurities are blocked out, so as to improve the stability and life of the worm gear transmission.

[0010] In the above-mentioned spur bevel gear milling machine tool holder, at least one of the above-mentioned first bearings is provided on both axial sides of the worm gear, so that the rotating shaft rotates more smoothly and the processing accuracy is improved.

[0011] In the above-mentioned spur bevel gear milling machine tool holder, the positioning seat includes a support plate, a slide plate and a base arranged in sequence from left to right, and the above-mentioned mounting holes and mounting cylinders are both arranged on the base; the support plate is connected to the support platform through a connecting structure so that the support plate can swing along an axis extending left and right and be locked in a swinging position; the slide plate can slide back and forth relative to the support plate and be locked in a sliding position; the base can slide up and down relative to the slide plate and be locked in a sliding position. Among them, the swinging of the support plate is used to adjust the circumferential pressure angle, the sliding of the base is used to adjust the module, and the sliding of the slide plate is used to adapt to the change in the machining starting position caused by the change in the position of the support plate and the base, so that the present gear milling machine can better adapt to different and similar spur teeth, and has the advantages of good practicality and convenient adjustment.

[0012] In the above-mentioned straight bevel gear milling machine tool holder, the left side of the support plate is pressed on the support platform; the connection structure includes arc grooves that penetrate the support plate from left to right, and the support plate swings around the central axis of the arc groove; a stud is correspondingly fixed on the support platform, the stud passes through the arc groove and is screwed with a nut, and the nut is tightly pressed on the right side of the support plate. The support plate can be locked or unlocked by turning the nut, which has the advantages of simple structure and easy use.

[0013] In the above-mentioned straight bevel gear milling machine tool holder, the support plate is also hinged to the support platform through a horizontally arranged connecting shaft, and the connecting shaft and the arc groove are coaxially arranged. The connecting shaft is arranged to prevent the support plate from falling off during adjustment, ensuring that the adjustment process is stable and smooth.

[0014] In the above-mentioned spur bevel gear milling machine tool holder, the above-mentioned arc grooves are provided on both the front and rear sides of the support plate, and the number of studs, arc grooves and nuts is the same and their positions correspond one to one to enhance the locking strength of the support plate.

[0015] In the above-mentioned spur bevel gear milling machine tool holder, the slide plate is connected to the support plate by a guide structure 1 for sliding back and forth, and the slide plate is locked in the sliding position by a locking structure 1, so as to refine the slide plate sliding locking method, which is not only convenient for design, but also makes the structure more stable.

[0016] In the above-mentioned spur bevel gear milling machine tool holder, the base is connected to the slide plate by sliding up and down through the guide structure 2, and the base is locked in the sliding position by the locking structure 2, so as to refine the base sliding locking method, which is not only convenient for design, but also makes the structure more stable.

[0017] One of the purposes of the utility model can be achieved through the following technical scheme: a gear milling machine, including the above-mentioned tool holder, a spindle box is also provided on the bed, and the spindle box is located on the right side of the support platform, and is characterized in that the tool holder is located between the spindle box and the support platform, and the tool holder has two sections and is symmetrically arranged up and down to achieve simultaneous milling of both sides of the straight teeth with high efficiency.

[0018] Compared with the prior art, the spur bevel gear milling machine tool holder and the milling machine have the following advantages:

[0019] 1. The positioning seat is arranged on one side of the support platform, and the motor arranged on the positioning seat directly drives the cutter head connected to the rotating shaft to operate by worm gear transmission, so as to effectively simplify the transmission structure, and has the advantages of simple structure, stable operation, low noise and high working precision.

[0020] 2. With the cooperation of the stopper sleeve and the oil seal, a closed cavity is formed between the mounting hole and the positioning cylinder to block external dust and other impurities, thereby improving the stability and life of the worm gear transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of a gear milling machine.

[0022] Figure 2 It is a three-dimensional schematic diagram of the tool holder of the spur bevel gear milling machine.

[0023] Figure 3 It is a schematic cross-sectional view of the tool holder of a spur bevel gear milling machine.

[0024] Figure 4 It is a schematic cross-sectional view of the spur bevel gear milling machine tool holder in another direction.

[0025] In the figure, 1, bed; 2, support table; 3, rotating shaft; 4, cutter head; 5, positioning seat; 5a, mounting hole; 5b, mounting cylinder; 5c, stop sleeve; 5d, oil seal; 5e, support plate; 5e1, arc groove; 5f, slide plate; 5g, base; 6, worm; 7, first bearing; 8, worm wheel; 9, motor; 10, stud; 11, connecting shaft; 12, handwheel; 13, spindle box. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1

[0027] like Figure 1 As shown, the gear milling machine includes a bed 1 and a support platform 2, a tool holder and a spindle box 13 all arranged on the bed 1. The spindle box 13 is located on the right side of the support platform 2, and the tool holder is located between the spindle box 13 and the support platform 2. The tool holder has two sections and is symmetrically arranged up and down to achieve simultaneous milling of both sides of the straight teeth with high efficiency.

[0028] in,

[0029] The tool holder of the straight bevel gear milling machine comprises a rotating shaft 3 which is obliquely arranged on the right side of a supporting platform 2 , and one end of the rotating shaft 3 is used for mounting a cutter disc 4 .

[0030] Specifically,

[0031] like Figures 2 to 4 As shown, a positioning seat 5 is installed on the support platform 2, and a worm 6 is horizontally rotatably arranged on the positioning seat 5, and the axis of the worm 6 extends forward and backward. The worm 6 is located between the rotating shaft 3 and the support platform 2, and the rotating shaft 3 is rotatably arranged on the positioning seat 5 through the first bearing 7, and a worm wheel 8 meshing with the worm 6 is sleeved and fixed on the rotating shaft 3. A motor 9 for driving the worm 6 to rotate is also fixed on the positioning seat 5.

[0032] The positioning seat 5 is arranged on one side of the support platform 2, and the motor 9 arranged on the positioning seat 5 directly drives the cutter head 4 connected to the rotating shaft 3 to operate by using the worm gear 8 and worm 6 to effectively simplify the transmission structure, which has the advantages of simple structure and stable operation.

[0033] In this embodiment,

[0034] like Figure 3 and Figure 4 As shown, the installation method of the worm 6 and the worm wheel 8 is as follows: the positioning seat 5 is provided with a mounting hole 5a and a mounting tube 5b, and the mounting tube 5b is located on the right side of the mounting hole 5a. The worm 6 is rotatably arranged in the mounting hole 5a and the two are coaxially arranged, and the outer end of the worm 6 extends out of the mounting hole 5a and is connected to the motor 9; the rotating shaft 3 and the first bearing 7 are both arranged in the mounting tube 5b, and the rotating shaft 3 and the mounting tube 5b are coaxially arranged, and the outer end of the rotating shaft 3 extends out of the mounting tube 5b and is connected to the cutter head 4. A clearance hole is provided on the right side of the mounting hole 5a so that the right side of the worm 6 can extend into the mounting tube 5b and mesh with the worm wheel 8. With the cooperation of the mounting hole 5a and the mounting tube 5b, the installation of the rotating shaft 3 and the worm 6 can be further simplified.

[0035] In the actual product, the inner ring and outer ring of the first bearing 7 are fixedly connected to the outer wall of the rotating shaft 3 and the inner wall of the mounting tube 5b respectively. The worm 6 is rotatably arranged in the mounting hole 5a through the second bearing. The outer end of the worm 6 extends out of the mounting hole 5a and is connected to the main shaft of the motor 9 through a coupling.

[0036] Further explanation, at least one of the above-mentioned first bearings 7 is provided on both axial sides of the worm wheel 8, so that the rotating shaft 3 rotates more smoothly and the processing accuracy is improved. Preferably, the first bearing 7 on the side close to the cutter head 4 is a tapered roller bearing, and the first bearing 7 on the other side is a cylindrical roller bearing.

[0037] Furthermore, the mounting hole 5a and the mounting cylinder 5b are both closed at one end and open at the other end, and the other ends of the mounting hole 5a and the mounting cylinder 5b are both inserted and sealed with a stopper sleeve 5c, and the two stopper sleeves 5c are respectively sleeved on the rotating shaft 3 and the worm 6, and the inner walls of the two stopper sleeves 5c are respectively sealed with the rotating shaft 3 and the worm 6 through the oil seal 5d. With the cooperation of the stopper sleeve 5c and the oil seal 5d, a closed cavity is formed between the mounting hole 5a and the positioning cylinder, and external dust and other impurities are blocked out, so as to improve the transmission stability and life of the worm wheel 8 and the worm 6. In actual products, the outer walls of the two stopper sleeves 5c are respectively sealed with the inner walls of the mounting hole 5a and the inner walls of the mounting cylinder 5b through sealing rings.

[0038] like Figure 1 and Figure 2 As shown, the positioning seat 5 includes a support plate 5e, a slide plate 5f and a base 5g which are arranged in sequence from left to right, and the mounting hole 5a and the mounting tube 5b are both arranged on the base 5g. The support plate 5e is connected to the support platform 2 through a connecting structure so that the support plate 5e can swing along an axis extending left and right and be locked in a swinging position; the slide plate 5f can slide back and forth relative to the support plate 5e and be locked in a sliding position; the base 5g can slide up and down relative to the slide plate 5f and be locked in a sliding position. Among them, the swinging of the support plate 5e is used to adjust the circumferential pressure angle, the sliding of the base 5g is used to adjust the module, and the sliding of the slide plate 5f is used to adapt to the change in the machining starting position caused by the change in the position of the support plate 5e and the base 5g, so that the gear milling machine can better adapt to different and similar straight teeth, and has the advantages of good practicality and convenient adjustment.

[0039] In this embodiment,

[0040] like Figure 2 As shown, the connection structure is as follows: the left side of the support plate 5e is pressed on the support platform 2; the connection structure includes a circular arc groove 5e1 that runs through the support plate 5e from left to right, and the support plate 5e swings around the central axis of the circular arc groove 5e1; a stud 10 is fixed on the support platform 2, and the stud 10 passes through the circular arc groove 5e1 and is screwed with a nut, and the nut is pressed tightly on the right side of the support plate 5e. By turning the nut, the support plate 5e can be locked or unlocked, which has the advantages of simple structure and easy use. Further explanation, the support plate 5e is also hinged to the support platform 2 through a horizontally arranged connecting shaft 11, and the connecting shaft 11 and the circular arc groove 5e1 are coaxially arranged. The connecting shaft 11 is set to prevent the support plate 5e from falling off during adjustment, ensuring that the adjustment process is stable and smooth. In the actual product, there are two arc grooves 5e1, which are respectively arranged on the front and rear sides of the support plate 5e. The number of studs 10, arc grooves 5e1 and nuts are the same and their positions correspond one to one to enhance the locking strength of the support plate 5e. At this time, the connecting shaft 11 is located between the two arc grooves 5e1.

[0041] The installation method of the slide plate 5f is as follows: the slide plate 5f is connected to the support plate 5e by sliding forward and backward through the guide structure 1, and the slide plate 5f is locked in the sliding position through the locking structure 1, so as to refine the sliding locking method of the slide plate 5f, which is not only convenient for design, but also makes the structure more stable. In this embodiment, the guide structure 1 is a slide guide block structure, and the locking structure 1 is a screw nut transmission structure, and preferably one end of the screw is fixedly connected to the hand wheel 12. Among them, the slide guide block structure and the screw nut transmission structure are both existing and will not be described in detail here.

[0042] The installation method of the base 5g is as follows: the base 5g is connected to the slide plate 5f by sliding up and down through the guide structure 2, and the base 5g is locked in the sliding position through the locking structure 2, so as to refine the sliding locking method of the base 5g, which is not only convenient for design, but also makes the structure more stable. In this embodiment, the guide structure 2 is also a slide guide block structure, and the locking structure 2 is also a screw nut transmission structure. Embodiment 2

[0043] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the guide structure one is a guide rail slider structure, the guide rail slider structure includes a slider, the type of the slider is a locking slider, and the above-mentioned locking structure two is a slider. Embodiment 3

[0044] The structure and principle of the third embodiment are basically the same as those of the first embodiment, except that the second guide structure includes a T-shaped groove opened around the right side of the slide plate 5f, and the T-shaped groove is vertically arranged, and a T-shaped bolt is slidably arranged in each T-shaped groove, and the second locking structure includes a pressure cap matched with the T-shaped bolt, the number of T-shaped bolts and pressure caps is the same and the positions correspond one to one, and each pressure cap is tightly pressed on the base 5g.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A tool holder for a straight bevel gear milling machine, the tool holder comprising a bed (1) and a support platform (2) arranged on the bed (1), the tool holder comprising a rotating shaft (3) arranged obliquely on the right side of the support platform (2), one end of the rotating shaft (3) being used for mounting a cutter disc (4), characterized in that: A positioning seat (5) is mounted on the support platform (2), a worm (6) is rotatably mounted on the positioning seat (5), and the axis of the worm (6) extends forward and backward; the worm (6) is located between the rotating shaft (3) and the support platform (2); the rotating shaft (3) is rotatably mounted on the positioning seat (5) via a first bearing (7), and a worm wheel (8) meshing with the worm (6) is sleeved and fixed on the rotating shaft (3); and a motor (9) for driving the worm (6) to rotate is also fixed on the positioning seat (5).

2. The straight bevel gear milling machine tool holder according to claim 1, characterized in that: The positioning seat (5) is provided with a mounting hole (5a) and a mounting tube (5b), and the mounting tube (5b) is located on the right side of the mounting hole (5a); the worm (6) is rotatably arranged in the mounting hole (5a) and the two are coaxially arranged, the outer end of the worm (6) extends out of the mounting hole (5a) and is connected to the motor (9); the rotating shaft (3) and the first bearing (7) are both arranged in the mounting tube (5b), and the rotating shaft (3) and the mounting tube (5b) are coaxially arranged, the outer end of the rotating shaft (3) extends out of the mounting tube (5b) and is connected to the cutter disc (4), and a clearance hole is provided on the right side of the mounting hole (5a) so that the right side of the worm (6) can extend into the mounting tube (5b) and mesh with the worm wheel (8).

3. The straight bevel gear milling machine tool holder according to claim 2, characterized in that: The mounting hole (5a) and the mounting tube (5b) are both closed at one end and open at the other end; a stopper sleeve (5c) is inserted and sealed and fixed to the other end of the mounting hole (5a) and the mounting tube (5b); the two stopper sleeves (5c) are respectively sleeved on the rotating shaft (3) and the worm gear (6); and the inner walls of the two stopper sleeves (5c) are respectively sealed with the rotating shaft (3) and the worm gear (6) through oil seals (5d).

4. The straight bevel gear milling machine tool holder according to claim 2 or 3, characterized in that: At least one of the above-mentioned first bearings (7) is provided on both axial sides of the worm wheel (8).

5. The straight bevel gear milling machine tool holder according to claim 3, characterized in that: The positioning seat (5) comprises a support plate (5e), ​​a slide plate (5f) and a base (5g) which are arranged in sequence from left to right, and the above-mentioned mounting hole (5a) and mounting tube (5b) are both arranged on the base (5g); the support plate (5e) is connected to the support platform (2) through a connecting structure so that the support plate (5e) can swing along an axis extending left and right and be locked in a swinging position; the slide plate (5f) can slide forward and backward relative to the support plate (5e) and be locked in a sliding position; the base (5g) can slide up and down relative to the slide plate (5f) and be locked in a sliding position.

6. The straight bevel gear milling machine tool holder according to claim 5, characterized in that: The left side of the support plate (5e) is pressed onto the support platform (2); the connection structure comprises a circular arc groove (5e1) penetrating the support plate (5e) from left to right, and the support plate (5e) swings around the central axis of the circular arc groove (5e1); a stud (10) is correspondingly fixed on the support platform (2), the stud (10) passes through the circular arc groove (5e1) and is screwed with a nut, and the nut is tightly pressed onto the right side surface of the support plate (5e).

7. The straight bevel gear milling machine tool holder according to claim 6, characterized in that: The support plate (5e) is also hinged to the support platform (2) via a horizontally arranged connection shaft (11), and the connection shaft (11) and the circular arc groove (5e1) are coaxially arranged.

8. The straight bevel gear milling machine tool holder according to claim 5, characterized in that: The slide plate (5f) is connected to the support plate (5e) in a forward and backward sliding manner via a guide structure 1, and the slide plate (5f) is locked in a sliding position via a locking structure 1.

9. The straight bevel gear milling machine tool holder according to claim 5, characterized in that: The base (5g) is connected to the slide plate (5f) in an up-and-down sliding manner via the second guide structure, and the base (5g) is locked in a sliding position via the second locking structure.

10. A gear milling machine, comprising a tool holder according to any one of claims 1 to 9, wherein a spindle box (13) is further provided on the bed (1), and the spindle box (13) is located on the right side of the support platform (2), characterized in that: The tool holder is located between the spindle box (13) and the support platform (2), and has two sections that are symmetrically arranged up and down.

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