A turning and milling mechanism on a gear skiving machine

Abstract

The invention discloses a milling mechanism on a gear scraping machine, comprising a frame and a milling device, the frame is also provided with an X-axis translation device and a Y-axis translation device for controlling the milling device to translate along the X-axis and the Y-axis, the milling device is hinged on the Y gate of the Y-axis translation device, and the milling device can rotate around the hinge axis relative to the Y gate through a rotating device, a positioning device is provided between the milling device and the Y gate, so that after the milling device is rotated into place, the milling device is in a fixed state relative to the Y gate; the milling device comprises a rotating body, a fine-tuning screw device arranged in the rotating body, and a tool holder body connected to the fine-tuning screw device and capable of translating along the Y-axis. When the present invention performs gear processing on a workpiece, the processing efficiency is high, the stability is good, and the precision of the finished product is high.

Description

Technical Field

[0001] The invention relates to a turning and milling mechanism on a gear scraping machine. Background Art

[0002] The existing gear skiving machines have problems such as low precision and low processing efficiency in processing gears. Summary of the invention

[0003] The invention aims to solve the technical problem of low processing efficiency of the turning and milling mechanism on the existing gear skiving machine.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] The invention discloses a milling mechanism on a gear scraping machine, comprising a frame and a milling device. The frame is also provided with an X-axis translation device and a Y-axis translation device for controlling the milling device to translate along the X-axis and the Y-axis. The milling device is hinged on a Y gate plate of the Y-axis translation device, and the milling device can rotate around a hinge axis relative to the Y gate plate through a rotating device. A positioning device is provided between the milling device and the Y gate plate, so that after the milling device is rotated into place, the milling device is in a fixed state relative to the Y gate plate. The milling device comprises a rotating body, a fine-tuning screw device arranged in the rotating body, and a tool holder body connected to the fine-tuning screw device and capable of translating along the Y-axis.

[0006] The positioning device includes a "T"-shaped annular groove arranged on a side of the Y gate facing the milling device, and a plurality of positioning structures arranged on the rotating body and corresponding to the annular groove. The positioning structure includes a shell, a disc spring arranged in the shell, a cylinder piston rod and a sealing cover. The sealing cover is screwed to the open end face of the shell, so that the disc spring and the cylinder piston rod are always in the shell. One end of the disc spring abuts against the inner end face of the shell, and the other end abuts against the end face of the cylinder piston rod. The sealing cover is provided with an oil inlet hole. By filling or draining oil from the oil inlet hole, the axial movement of the cylinder piston rod is realized. A sliding rod is installed on the cylinder piston rod. The sliding rod has a locking head. The locking head is in the annular groove, so as to realize the locking or release of the locking head and the annular groove.

[0007] The annular groove comprises a narrower groove, a wider groove and a notch arranged on the narrower groove. The thickness of the narrower groove is within the interval range of the spacing distance between the locking head and the housing, and the notch matches the locking head.

[0008] A guide hole is arranged on the oil cylinder piston rod, and a positioning pin corresponding to the guide hole is arranged on a side of the sealing cover facing the oil cylinder piston rod.

[0009] The outer end surface of the sealing cover is provided with a plurality of locking holes.

[0010] The fine-tuning screw device includes a screw arranged in a rotating body, a screw flange screwed on the screw, and a connecting seat fixed on the screw flange. The tool holder body is fixed on the connecting seat. The screw is rotated around the axis through a worm gear device, thereby driving the tool holder body to move up and down along the screw axis.

[0011] The worm gear device comprises a motor, a worm connected to a rotating shaft of the motor, and a worm wheel arranged on a lead screw and meshing with the worm.

[0012] The tool holder body comprises a seat body, a power shaft is arranged in the seat body, a rotor is arranged on the power shaft, and a stator corresponding to and matching with the rotor is arranged in the seat body.

[0013] A buffer structure is provided between the tool holder body and the rotating body. The buffer structure comprises a pressure-maintaining oil cylinder arranged in the rotating body and a connecting block arranged on the tool holder body. The piston rod of the pressure-maintaining oil cylinder is fixedly connected to the connecting block.

[0014] The rotating device comprises a rotating motor, a driving gear connected to an output shaft of the rotating motor, and a driven gear arranged on the hinge shaft, wherein the driving gear meshes with the driven gear.

[0015] A three-sided guide mechanism is provided between the tool holder body and the rotating body, and the three-sided guide mechanism includes a left inclined surface, a right inclined surface and an intermediate surface connecting the left inclined surface and the right inclined surface, the tool holder body has a plane matching and fitting with the left inclined surface, the intermediate surface and the right inclined surface, and the left inclined surface, the right inclined surface and the intermediate surface are all provided with oil grooves, and lubricating oil is provided in the oil grooves; a left pressure plate and a right pressure plate are also provided on the rotating body on the outer sides of the left inclined surface and the right inclined surface, and the left pressure plate and the right pressure plate are correspondingly matched on the left side and the right side of the tool holder body.

[0016] The beneficial effects of the present invention are:

[0017] Compared with the prior art, the milling mechanism on the gear skiving machine of the present invention realizes the left-right and up-and-down movement of the milling device in the X-axis and Y-axis directions through the X-axis translation device and the Y-axis translation device, so that the power shaft of the tool holder body can quickly reach the top of the workpiece and accurately reach the position;

[0018] Compared with the prior art, the turning and milling mechanism on the gear skiving machine of the present invention needs to drive the turning and milling device to rotate through a rotating device when processing gears. After rotating to the right position, in order to ensure the processing accuracy and stability, a positioning device is specially designed so that the rotating body and the Y gate plate are relatively fixed;

[0019] Compared with the prior art, in the milling mechanism of the gear skiving machine of the present invention, the tool holder body realizes axial movement along the screw rod through the fine-tuning screw rod device. In order to avoid the tool holder body stalling during axial movement, resulting in poor stability, a buffer structure is added to balance the impact force brought by the fine-tuning screw rod device.

[0020] Compared with the prior art, the turning and milling mechanism on the gear skiving machine of the present invention has a three-sided guiding mechanism between the tool holder body and the rotating body, which not only avoids the left and right shaking problem of the tool holder body when it moves up and down, but also avoids the problem of hammering or tilting the head at the upper and lower ends of the tool holder body when it moves up and down, thereby ensuring the stability of the tool holder body when moving.

[0021] In summary, the turning and milling mechanism on the gear skiving machine of the present invention has high processing efficiency, good stability and high precision of the finished product when processing gears on a workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional view of a turning and milling mechanism on the gear skiving machine of the present invention from one angle;

[0023] Figure 2 It is a three-dimensional view of the turning and milling mechanism on the gear skiving machine of the present invention from another angle;

[0024] Figure 3 It is a three-dimensional exploded view of the turning and milling mechanism on the gear skiving machine of the present invention;

[0025] Figure 4 It is a stereoscopic view of the turning and milling mechanism on the gear skiving machine of the present invention without the X-axis translation device and the Y-axis translation device;

[0026] Figure 5 It is a stereoscopic view of a turning and milling device of a turning and milling mechanism on a gear skiving machine of the present invention from one viewing angle;

[0027] Figure 6 It is a stereoscopic view of the turning and milling device of the turning and milling mechanism on the gear skiving machine of the present invention from another perspective;

[0028] Figure 7 It is a rear view of the turning and milling device of the turning and milling mechanism on the gear skiving machine of the present invention;

[0029] Figure 8 yes Figure 7 AA section view;

[0030] Fig. 9 It is a structural cross-sectional view of the positioning device of the turning and milling mechanism on the gear skiving machine of the present invention in a clamped state;

[0031] Fig.10 It is a structural cross-sectional view of the positioning device of the turning and milling mechanism on the gear skiving machine of the present invention in a loosened state;

[0032] Fig.11 It is a three-dimensional exploded view of the positioning device of the turning and milling mechanism on the gear skiving machine of the present invention;

[0033] Fig.12 It is a three-dimensional exploded view of the buffer structure of the turning and milling mechanism on the gear skiving machine of the present invention;

[0034] Fig.13 It is a three-dimensional diagram of the turning and milling device of the turning and milling mechanism on the gear skiving machine of the present invention without the tool holder body;

[0035] Fig.14 It is a three-dimensional exploded view of the fine-tuning screw device of the turning and milling mechanism on the gear scraping machine of the present invention. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0037] See also Figures 1 to 14 The present invention provides a milling mechanism on a gear skiving machine, comprising a frame 1 and a milling device 2. The frame 1 is also provided with an X-axis translation device 3 and a Y-axis translation device 4 for controlling the milling device 2 to translate along the X-axis and the Y-axis. The milling device 2 is hinged on a Y gate plate 5 of the Y-axis translation device 4, and the milling device 2 can rotate around a hinge axis 7 relative to the Y gate plate 5 through a rotating device 6. A positioning device 8 is provided between the milling device 2 and the Y gate plate 5, so that after the milling device 2 is rotated into place, the milling device 2 is in a fixed state relative to the Y gate plate 5; the milling device 2 comprises a rotating body 9, a fine-tuning screw device 10 arranged in the rotating body 9, and a tool holder body 11 connected to the fine-tuning screw device 10 and capable of translating along the Y-axis.

[0038] The positioning device 8 includes a "T"-shaped annular groove 12 arranged on a side of the Y gate 5 facing the milling device 2, and a plurality of positioning structures 13 arranged on the rotating body 9 and corresponding to the annular groove 12. The positioning structures 13 have five pieces, which are respectively installed in the five mounting holes 55 of the rotating body 9, and include a housing 14, a disc spring 15 arranged in the housing 14, a cylinder piston rod 16 and a sealing cover 17. The sealing cover 17 is screwed to the open end surface of the housing 14, and an O-ring 18 is provided between the sealing cover 17 and the housing 14. The disc spring 15 and the cylinder piston rod 16 are always sealed in the housing 14. One end of the disc spring 15 abuts against the inner end surface of the housing 14, and the other end abuts against the end surface of the cylinder piston rod 16. The sealing cover 17 is provided with an oil inlet hole 19. By filling or draining oil from the oil inlet hole 19, the axial movement of the cylinder piston rod 16 is achieved. A sliding rod 20 is installed on the cylinder piston rod 16. The sliding rod 20 has a locking head 21. The locking head 21 is in the annular groove 12, so that the locking head 21 and the annular groove 12 can be locked or released.

[0039] The annular groove 12 includes a narrower groove 22, a wider groove 23 and a notch 24 arranged on the narrower groove 22. The thickness d of the narrower groove 22 is within the interval range of the spacing distance D between the locking head 21 and the shell 14. The notch 24 matches the locking head 21. The notch 24 is used for the installation of the locking head 21, that is, the locking head 21 is inserted from the notch 24, so that the locking head 21 enters the annular groove 12, and the locking head 21 is matched in the position of the wider groove 23, and the sliding rod 20 is in the position of the narrower groove 22, so that the locking head 21 can move in the annular groove 12 without disengaging.

[0040] The locking head 21 is a flat square structure, and two opposite planes 25 correspond to two side walls of the wider groove 23 respectively, so as to prevent the cylinder piston rod 16 from rotating.

[0041] The oil cylinder piston rod 16 is provided with a guide hole 26, and a locating pin 27 corresponding to the guide hole 26 is provided on the sealing cover 17 on a side facing the oil cylinder piston rod 16. When the oil cylinder piston rod 16 moves axially, the cooperation between the locating pin 27 and the guide hole 26 makes the movement of the oil cylinder piston rod 16 more stable.

[0042] The outer end surface of the sealing cover 17 is provided with a plurality of locking holes 28. When the sealing cover 17 and the housing 14 are installed, a special tool is used to clamp in the locking holes 28, so as to complete the screw connection and fastening of the sealing cover 17 and the housing 14.

[0043] The fine-tuning screw device 10 includes a screw 29 arranged in the rotating body 9, a screw flange 30 screwed on the screw 29, and a connecting seat 31 fixed on the screw flange 30. The tool holder body 11 is fixed on the connecting seat 31. The screw 29 is rotated around the axis through a worm gear device, thereby driving the tool holder body 11 to move up and down along the axis of the screw 29.

[0044] The worm gear device includes a motor 32 , a worm 33 connected to the rotating shaft of the motor 32 , and a worm wheel 34 disposed on the lead screw 29 and meshing with the worm 33 .

[0045] The tool holder body 11 includes a seat body 35, a power shaft 36 is arranged in the seat body 35, a rotor 37 is arranged on the power shaft 36, and a stator 38 corresponding to the rotor 37 is arranged in the seat body 35. During processing, a tool needs to be installed on the power shaft 36 to achieve high-speed rotation of the tool for gear scraping.

[0046] A buffer structure is provided between the tool holder body 11 and the rotating body 9, and the buffer structure includes a pressure-maintaining oil cylinder 39 provided in the rotating body 9 and a connecting block 40 provided on the tool holder body 11, and a piston rod 41 of the pressure-maintaining oil cylinder 39 is fixedly connected to the connecting block 40. When the tool holder body 11 moves, the moving force of the pressure-maintaining oil cylinder 39 of the buffer structure is always opposite to the moving force of the tool holder body 11, thereby achieving a buffering effect and preventing the tool holder body 11 from stalling.

[0047] The rotating device 6 includes a rotating motor (not shown in the figure), a driving gear 43 connected to the output shaft of the rotating motor (not shown in the figure), and a driven gear 44 arranged on the hinge shaft 7, and the driving gear 43 is meshed with the driven gear 44.

[0048] A three-sided guide mechanism is provided between the tool holder body 11 and the rotating body 9, and the three-sided guide mechanism includes a left inclined surface 45, a right inclined surface 46 and an intermediate surface 47 connecting the left inclined surface 45 and the right inclined surface 46, and the tool holder body 11 has a plane matching and fitting with the left inclined surface 45, the intermediate surface 47 and the right inclined surface 46, and an oil groove 48 is provided on the left inclined surface 45, the right inclined surface 46 and the intermediate surface 47, and lubricating oil is provided in the oil groove 48; a left pressure plate 49 and a right pressure plate (not shown in the figure) are also provided on the outer sides of the left inclined surface 45 and the right inclined surface 46 of the rotating body 9, and the left pressure plate 49 and the right pressure plate (not shown in the figure) are matched with the left and right sides of the tool holder body 11 respectively.

[0049] The working principle of the turning and milling mechanism on the gear skiving machine of the present invention is explained below:

[0050] The turning and milling mechanism on the gear skiving machine of the present invention, the X-axis translation device 3 and the Y-axis translation device 4 both include a motor 51, a reduction gear 52, a screw 53, and a nut sleeve 54. The X-axis translation device 3 drives the base 56 to move along the X-axis relative to the frame 1, the Y-axis translation device 4 is fixed on the base 56, the Y-axis translation device 4 drives the Y gate plate 5 to move up and down, and the turning and milling device 2 is arranged on the Y gate plate 5.

[0051] During operation, the milling device 2 can quickly reach the top of the workpiece through the X-axis translation device 3 and the Y-axis translation device 4. Then, the X-axis translation device 3 and the Y-axis translation device 4 stop working, and then the milling device 2 works, specifically: first, the rotating device 6 works, and the rotating motor (not shown in the figure) drives the active gear 43, and the active gear 43 drives the driven gear 44 to rotate. Since the rotating shaft (that is, the hinge shaft 7) of the driven gear 44 is fixedly connected to the rotating body 9 of the milling device 2, the milling device 2 is driven to rotate around the hinge shaft 7 as a whole. Before the milling device 2 rotates, the rotating body 9 needs to be unlocked relative to the Y gate plate 5, that is: by injecting oil and pressurizing the oil inlet hole 19, the cylinder piston rod 16 squeezes the disc spring 15 and the cylinder piston rod 16 moves axially At this time, the slide bar 20 fixed on the cylinder piston rod 16 moves outward, that is, the spacing distance D between the positioning head 21 at the outer end of the slide bar 20 and the end face of the housing 14 is greater than the thickness d of the narrower groove 22 of the annular groove 12, and the end face of the housing 14 matches the end face of the rotating body 9, so that the end face of the rotating body 9 and the Y gate plate 5 are not in contact and are in a separated state, so that the milling device 2 can rotate relative to the Y gate plate 5. In order to ensure that the fastening between the rotating body 9 and the Y gate plate 5 is relatively stable, we use five groups of positioning devices 8, which are scientifically distributed and installed in the five mounting holes 55 of the rotating body 9, and the oil inlet holes 19 of each positioning device 8 are connected in series, and an oil circuit is used to supply oil to ensure that the movements of each positioning device 8 are consistent;When machining gears, the rotation angle of the milling device 2 generally does not exceed 30 degrees from the central axis. After the milling device 2 is driven to rotate to the specified angle, the rotating body 9 needs to be fastened relative to the Y gate 5. At this time, the oil inlet hole 19 of the positioning device 8 needs to be returned. At this time, under the elastic force of the disc spring 15, the cylinder piston rod 16 moves in the opposite direction along the axial direction, so that the spacing distance D between the positioning head 21 and the end face of the shell 14 is gradually reduced, thereby clamping the thickness d position of the narrower groove 22. In other words, the positioning head 21 is close to the end face of the shell 14, so that the thickness d position of the narrower groove 22 is between the positioning head 21 and the end face of the shell 14, so that the rotating body 9 is fixed relative to the Y gate 5. Finally, by fine-tuning the screw device 10 and the X-axis The translation device 3 works in coordination, that is, the motor 32 of the fine-tuning screw device 10 drives the worm 33 to rotate. Since the worm 33 is meshed with the worm wheel 34 set on the screw 29, the screw 29 is driven to rotate. The screw 29 is screwed to the screw flange 30, and the tool holder body 11 is fixed to the screw flange 30 through the connecting seat 31. In this way, the tool holder body 11 moves downward and upward along the axial direction of the screw 29, that is, the tool holder body 11 moves toward the workpiece and away from the workpiece. At the same time, the X-axis translation device 3 makes the entire milling device 2 move along the X-axis toward the direction close to the workpiece and away from the workpiece, so that the tool holder body 11 reciprocates in the scraping track. At the same time, the power shaft 36 of the tool holder body 11 rotates, and the tool scrapes the workpiece. ;

[0052] The above is a detailed introduction to the turning and milling mechanism on the gear skiving machine provided in the embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions disclosed by the present invention. At the same time, for general technicians in this field, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

1. A turning and milling mechanism on a gear skiving machine, characterized in that: The invention comprises a frame and a milling device, wherein the frame is also provided with an X-axis translation device and a Y-axis translation device for controlling the milling device to translate along the X-axis and the Y-axis, the milling device is hinged on the Y gate plate of the Y-axis translation device, and the milling device can rotate around the hinge axis relative to the Y gate plate through a rotating device, and a positioning device is provided between the milling device and the Y gate plate, so that after the milling device is rotated into place, the milling device is in a fixed state relative to the Y gate plate; the milling device comprises a rotating body, a fine-adjusting screw rod device arranged in the rotating body, and a screw rod device connected to the fine-adjusting screw rod The tool holder body can be translated along the Y axis and connected by a rod device; the positioning device includes a "T"-shaped annular groove arranged on a side of the Y gate facing the milling device, and a plurality of positioning structures arranged on the rotating body and corresponding to the annular groove. The positioning structure includes a shell, a disc spring arranged in the shell, a cylinder piston rod and a sealing cover. The sealing cover is screwed on the open end face of the shell, so that the disc spring and the cylinder piston rod are always in the shell, one end of the disc spring is against the inner end face of the shell, and the other end is against the end face of the cylinder piston rod The sealing cover is provided with an oil inlet hole, and the axial movement of the oil cylinder piston rod is realized by filling or draining oil into the oil inlet hole. A sliding rod is installed on the oil cylinder piston rod, and the sliding rod has a locking head, and the locking head is in the annular groove, so as to realize the locking or release of the locking head and the annular groove; a buffer structure is provided between the tool holder body and the rotating body, and the buffer structure includes a pressure-maintaining oil cylinder arranged in the rotating body and a connecting block arranged on the tool holder body, and the piston rod of the pressure-maintaining oil cylinder is fixedly connected to the connecting block; the tool holder body and the rotating body are A three-surface guide mechanism is provided between the bodies, and the three-surface guide mechanism includes a left inclined surface, a right inclined surface and an intermediate surface connecting the left inclined surface and the right inclined surface arranged on the rotating body; the tool holder body has a plane matching and fitting with the left inclined surface, the intermediate surface and the right inclined surface, and the left inclined surface, the right inclined surface and the intermediate surface are all provided with oil grooves, and lubricating oil is provided in the oil grooves; a left pressure plate and a right pressure plate are also provided on the rotating body on the outside of the left inclined surface and the right inclined surface, and the left pressure plate and the right pressure plate are correspondingly matched on the left side and the right side of the tool holder body.

2. The turning and milling mechanism on a gear skiving machine according to claim 1, characterized in that: The annular groove comprises a narrower groove, a wider groove and a notch arranged on the narrower groove. The thickness of the narrower groove is within the interval range of the spacing distance between the locking head and the housing, and the notch matches the locking head.

3. The turning and milling mechanism on a gear skiving machine according to claim 1, characterized in that: A guide hole is arranged on the oil cylinder piston rod, and a positioning pin corresponding to the guide hole is arranged on a side of the sealing cover facing the oil cylinder piston rod.

4. The turning and milling mechanism on a gear skiving machine according to claim 1, characterized in that: The fine-tuning screw device includes a screw arranged in a rotating body, a screw flange screwed on the screw, and a connecting seat fixed on the screw flange. The tool holder body is fixed on the connecting seat. The screw is rotated around the axis through a worm gear device, thereby driving the tool holder body to move up and down along the screw axis.

5. The turning and milling mechanism on a gear skiving machine according to claim 4, characterized in that: The worm gear device comprises a motor, a worm connected to a rotating shaft of the motor, and a worm wheel arranged on a lead screw and meshing with the worm.

6. The turning and milling mechanism on a gear skiving machine according to claim 1 or 4, characterized in that: The tool holder body comprises a seat body, a power shaft is arranged in the seat body, a rotor is arranged on the power shaft, and a stator corresponding to and matching with the rotor is arranged in the seat body.

7. The turning and milling mechanism on a gear skiving machine according to claim 1, characterized in that: The rotating device comprises a rotating motor, a driving gear connected to an output shaft of the rotating motor, and a driven gear arranged on the hinge shaft, wherein the driving gear meshes with the driven gear.

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