CN203390326U - Forming gear milling machine for inner gear rings - Google Patents

Abstract

A milling machine for forming an inner ring gear, comprising a rotary guide rail part, a column part, a milling head part, a milling head bracket, a disc-shaped workpiece platform with a central hole, a platform pillar and a workpiece support. The milling head of the utility model The built-in part makes the milling head no longer overhang, and the rigidity of the milling head part is strengthened; the built-in part of the milling head makes the expansion of the machining range of the machine tool only determined by the length of the horizontal guide rail on the workpiece platform, which breaks the traditional machine tool processing specifications. Due to the limitation of the size of the rotary table. The movement of the milling head parts avoids the problem of large-scale worm gear pairs necessary in the manufacture of large-scale rotary tables; the way the workpiece is fixed and the milling head parts rotate with the column parts avoids the rotary work in large-scale gear processing The Taichung worm and worm pair has a large impact load, is easy to wear, and is difficult to accurately locate.

Description

A milling machine for forming inner ring gear

technical field

The utility model relates to a gear processing machine tool, in particular to an inner ring gear forming and milling machine. the

Background technique

In the traditional CNC internal gear forming and milling machine tool, the workpiece is installed on the rotary table, and the rotary table drives the workpiece to realize the gear separation movement. The milling head part is suspended on the column part outside the workpiece, and the milling head part can move up and down. The column part is installed on the horizontal bed outside the rotary table and moves along the horizontal guide rail. The milling head hangs from the outside of the workpiece and enters the inner ring gear to complete the milling. Such a layout requires very good rigidity of the column and the milling head, otherwise the machining accuracy is difficult to guarantee; due to the limitation of the overhang length of the milling head, the size of the maximum and minimum ring gears that can be processed by each specification of the machine tool is not large. , leading to many specifications of the internal gear ring forming and milling machine tools; in this machine tool layout, for large internal gear rings, plus multiple workpiece supports, the total load-bearing capacity of the rotary table often reaches tens of tons. The stable and accurate stop of the workbench depends on the worm gear and worm pair, which causes the worm gear and worm pair to bear huge impact loads for a long time and frequently, which will inevitably lead to accelerated wear of the worm gear and worm pair and reduce the precision of tooth division. Especially when the indexing movement adopts closed-loop control, the back and forth adjustment of the worm gear pair for indexing is more frequent, resulting in serious wear of the worm gear pair. The accuracy retention also becomes poor, which undoubtedly has a great influence on the machining accuracy of gears. the

Utility model content

The purpose of this utility model is to solve the deficiencies of the above-mentioned technical problems, to provide a kind of internal ring gear forming gear milling machine, which solves the problems of small size variation range of the maximum and minimum ring gears that can be processed by the machine tool, overhang of the milling head, worm gear and worm pair Easy to wear and other issues. the

The utility model is to solve the deficiencies of the above-mentioned technical problems, and the technical solution adopted is:

A milling machine for forming an inner ring gear, comprising a rotary guide rail component, a column component, a milling head component, a milling head support, a disc-shaped workpiece platform with a central hole, a platform pillar and a workpiece support, the rotary guide rail component It consists of a rotary platform with guide rails on the upper surface, a horizontal sliding seat, an integral base, and a driving device that provides power for the rotary platform and the horizontal sliding seat. The rotary platform is installed on the integral base. The center of the base coincides, the horizontal sliding seat is connected with the guide rail on the upper surface of the rotary platform, the column part is fixed on the horizontal sliding seat, the milling head part is fixed on the upper end of the column part through the milling head bracket, and the workpiece platform is fixed on the integral base Above the circumferentially distributed platform pillars, the milling head parts pass through the central hole on the workpiece platform, and the workpiece supports are radially slidably arranged on the upper surface of the workpiece platform. The workpiece supports are plural and evenly distributed along the circumference of the workpiece platform. the

The drive device uses a servo motor 1 to drive a worm gear pair through a reducer 1. the

The column components include a column seat, a circular lifting column with a guide groove on the outer circumference, a positioning bush, a directional pressing block, a ball screw pair III, a screw nut seat, a reducer III and a servo motor III. The shaped lifting column is slidably installed in the positioning bushing in the column seat, and the side walls of the column seat and the positioning bushing are provided with positioning holes, and the directional pressure block is fixed in the positioning hole, and cooperates with the guide groove on the circular lifting column. Set, the servo motor III is fixed on the column seat, and drives the ball screw pair III to rotate through the reducer III, and the ball screw pair III drives the screw nut seat fixed on the circular lifting column to move. the

The milling head components include a milling head box, a cutter, a tool shaft, a reducer IV, a spindle motor, and a transmission mechanism composed of a plurality of intermediate transmission shafts and a plurality of transmission gears, and the spindle motor passes through the reducer IV drives the transmission mechanism, and the transmission mechanism drives the cutter shaft to drive the cutter to work. the

The center of the milling head bracket is provided with a rotation center hole, and the milling head components are installed in the rotation center hole. the

The horizontal sliding seat is driven by the ball screw pair II connected to the bottom to slide along the guide rail, and the ball screw pair II is driven by the reducer II driven by the servo motor II. the

The worm gear and worm pair includes a driving worm, a driven worm, a worm gear, a bevel gear set and an anti-backlash oil cylinder installed on an integral base. Both the worm and the driven worm mesh with the worm gear, one end of the driving worm meshes with one end of the driven worm through a bevel gear set, the other end of the driven worm is connected with an anti-backlash oil cylinder, and the other end of the driving worm is connected to the output shaft of the reducer I connect. the

The workpiece support is provided with clamps for fixing the workpiece. the

The beneficial effects of the utility model are: due to the adoption of the above structure, the built-in milling head part makes the milling head no longer overhang, and the rigidity of the milling head part is strengthened; the built-in milling head part makes the expansion of the processing range of the machine tool only determined The length of the horizontal guide rail on the workpiece platform breaks the limitation that the processing specifications of traditional machine tools depend on the size of the rotary table. The movement of the milling head parts avoids the problem of large-scale worm gear pairs necessary in the manufacture of large-scale rotary tables; the way the workpiece is fixed and the milling head parts rotate with the column parts avoids the rotary work in large-scale gear processing The Taichung worm and worm pair has a large impact load, is easy to wear, and is difficult to accurately locate. the

Description of drawings

Fig. 1 is the overall structure schematic diagram that the utility model is installed with workpiece;

Fig. 2 is a schematic structural view of the rotary guide rail components of the utility model;

Fig. 3 is a partial cross-sectional view of the rotary guide rail part of the utility model along the plane where the worm shaft is located;

Figure 4 is a structural schematic diagram of the column parts of the utility model;

Fig. 5 is the structural schematic diagram of the milling head part that cutter is housed in the utility model;

Fig. 6 is a cross-sectional view of A-A in Fig. 5 .

Icon marks: 1. Milling head bracket; 2. Round lifting column; 3. Workpiece; 4. Workpiece support; 5. Workpiece platform; 6. Platform pillar; 7. Integral base; 8. Horizontal sliding seat; 9. Rotary platform; 10. Servo motor I; 11. Reducer I; 12. Driving worm; 13. Intermediate transmission device; 14. Driven worm; 15. Servo motor II; 16. Reducer II; 17. Ball screw pair II; 18. Worm gear; 19. Anti-backlash cylinder; 20. Servo motor III; 21. Reducer III; 22. Ball screw pair III; , Positioning bushing; 27, Spindle motor; 28, Reducer IV; 29, Milling head box; 30, Tool shaft; 31, Tool; 32, Intermediate transmission shaft; 33, Transmission gear. the

Detailed ways

As shown in the figure, the specific implementation method is as follows:

A milling machine for forming an inner ring gear, comprising a rotary guide rail component, a column component, a milling head component, a milling head bracket 1, a disc-shaped workpiece platform 5 with a central hole, a platform pillar 6 and a workpiece support 4, the The rotary guide rail components are composed of a rotary platform 9 with a guide rail on the upper surface, a horizontal slide seat 8, an integral base 7, and a driving device that provides power for the rotary platform 9 and the horizontal slide seat 8. The rotary platform 9 is installed on the integral base. 7, the center of rotation of the rotary platform 9 coincides with the center of the integral base 7, the horizontal sliding seat 8 is matched with the guide rail on the upper surface of the rotary platform 9, the column parts are fixed on the horizontal sliding seat 8, and the milling head parts pass through the milling The head bracket 1 is fixed on the upper end of the column part, the workpiece platform 5 is fixed on the top of the platform pillar 6 distributed on the circumference of the integral base 7, the milling head part passes through the central hole on the workpiece platform 5, and the workpiece support 4 is radially slidably arranged On the upper surface of the workpiece platform 5 , there are multiple workpiece supports 4 which are evenly distributed along the circumferential direction of the workpiece platform 5 . the

The drive device uses a servo motor I10 to drive a worm gear pair through a reducer I11. the

The column components include a column base 24, a circular lifting column 2 with a guide groove on the outer peripheral surface, a positioning bush 26, a directional briquetting block 25, a ball screw pair III22, a nut seat 23, a reducer III21 and Servo motor III20, the circular lifting column 2 is slidably installed in the positioning bushing 26 in the column base 24, the side walls of the column base 24 and the positioning bushing 26 are provided with positioning holes, and the directional pressing block 25 is fixed in the positioning hole, And set with the guide groove on the circular lifting column 2, the servo motor III20 is fixed on the column seat 24, and drives the ball screw pair III22 to rotate through the reducer III21, and the ball screw pair III22 drives and is fixed on the circular lifting column 2 23 movements of the upper silk mother seat. the

Described milling head part comprises milling head casing 29, cutter 31, cutter shaft 30, speed reducer IV28, spindle motor 27, and the transmission mechanism that is made up of a plurality of intermediate transmission shafts 32 and a plurality of transmission gears 33, described The spindle motor 27 drives the transmission mechanism through the speed reducer IV28, and the transmission mechanism drives the cutter shaft 30 to drive the cutter 31 to work. the

The center of the milling head support 1 is provided with a rotary center hole, and the milling head components are installed in the rotary center hole. the

The horizontal sliding seat 8 is driven by the ball screw pair II17 connected to the bottom to slide along the guide rail, and the ball screw pair II17 is driven by the reducer II16 driven by the servo motor II15. the

The worm gear pair includes a driving worm 12, a driven worm 14, a worm gear 18, a bevel gear set and an anti-backlash oil cylinder 19 installed on the integral base 7. The axis of rotation of the platform 9 coincides, the driving worm 12 and the driven worm 14 are both meshed with the worm gear, one end of the driving worm 12 is meshed with one end of the driven worm 14 through a bevel gear set, and the other end of the driven worm 14 is connected with an anti-backlash cylinder 19. The other end of the drive worm 12 is connected to the output shaft of the speed reducer I11. the

The workpiece support 4 is provided with clamps for fixing the workpiece. the

As shown in Fig. 1, it is a kind of numerical control internal ring gear forming gear milling machine, including rotary guide rail parts, column parts, milling head parts, milling head support 1, workpiece platform 5, platform pillar 6, workpiece support 4. The column part is fixed on the horizontal sliding seat 8 of the rotary guide rail part, and moves along the guide rail in the X direction according to the diameter of the workpiece to be processed. The milling head part is fixed on the top of the circular lifting column 2 of the lifting column part through the milling head mounting bracket 1, and moves along the Y direction along with the lifting of the circular lifting column 2. The milling head part can rotate in the installation hole of the milling head support 1, and the milling head part adjusts its rotation angle according to the size of the workpiece helix angle when machining helical teeth. The rotary guide rail platform 9 of the rotary guide rail parts rotates around its center of revolution with the column part and the milling head part to complete the tooth-dividing motion. The workpiece platform 5 is fixedly connected as a whole through the platform pillar 6 and the integral base 7 of the rotary guide rail component. The workpiece support 4 is installed above the workpiece platform 5, and the workpiece support 4 with different lengths can be selected according to the difference of the workpiece 3 specifications, and the workpiece is fixed on the workpiece support 4 by the clamp, and the workpiece support 4 can move along the radial direction of the workpiece platform 5. the

As shown in Figure 2 and Figure 3, the rotary guide rail components include an integral base 7, a rotary platform 9, a main worm gear 12, a slave worm gear 14, a worm gear 18, an anti-backlash cylinder 19, an intermediate transmission device 13, a horizontal sliding seat 8, Ball screw pair II17, reducer II16 and servo motor II15. The six evenly-distributed finishing surfaces on the outside of the integral base 7 are used to install the platform pillar 6 , and the inside of the integral base 7 is provided with a circular guide rail for supporting the rotary guide rail platform 9 . The rotary guide rail platform 9 is concentric with the circular guide rail inside the integral base 7, and the two are connected by a rolling bearing device or a hydrostatic bearing device. The main worm gear 12 and the slave worm gear 14 are installed on the integral base 7, and the main worm gear 12 and the driven worm gear 14 share a worm wheel 18, which is installed on the bottom of the rotary platform 9 and coaxial with it. From the other end of worm gear 14, anti-backlash oil cylinder 19 is equipped with. The servo motor I10 is connected with the main worm gear 12 through the speed reducer I11. The horizontal sliding seat 8 is installed on the guide rail of the rotary platform 9, and the servo motor II15, the reducer II16, and the ball screw pair II17 are installed on the rotary platform 9. the

As shown in Figure 4, the column components include a column base 24, a circular lifting column 2, a positioning bush 26, a directional briquetting block 25, a ball screw pair III22, a screw nut seat 23, a reducer III21, and a servo motor III20. The positioning bushing 26 is installed in the inside of the column seat 24, and the circular lifting column 2 is installed in the inside of the positioning bushing 26, and the two are coaxial. In order to increase the rigidity, the circular lifting column 2 is designed as a double-layer structure, and a guide surface is processed around it, which is a guide groove formed by two vertical surfaces. Orientation pressing block 25 is fixed in the lateral groove of column base, cooperates with the guide surface of circular lifting column 2. The leading screw of described ball screw pair III22 is installed on the column base side, and the screw nut of ball screw pair III22 is connected with circular elevating column 2 by screw nut seat 23. The servo motor III20 is connected with the ball screw pair III22 through the reducer III21. the

As shown in FIG. 5 and FIG. 6 , the milling head components include a milling head box 29 , a cutter shaft 30 , an intermediate transmission shaft 32 , a transmission gear 33 , a reducer IV28 , and a spindle motor 27 . Tool shaft 30 , intermediate transmission shaft 32 , and a plurality of transmission gears 33 are installed inside milling head casing 29 , spindle motor 27 is installed on the top of milling head casing 29 through reducer IV28 , and cutter 31 is installed on cutter shaft 30 . The motor power in this embodiment is transmitted to the cutter shaft through two transmission chains. the

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model. the

Claims (8)

1. a ring gear moulding tooth milling machine, it is characterized in that: by circular guideway parts, pillar parts, milling head parts, milling head support (1), have the round-disk shape workpiece platform (5) of centre bore, studdle (6) and work mounting s (4), described circular guideway parts are provided with the revolving dial (9) of guide rail by upper surface, horizontal slide (8), Integral pedestal (7), and be that revolving dial (9) and horizontal slide (8) provide the drive unit of power to form, revolving dial (9) is arranged on Integral pedestal (7), the center superposition of the centre of gyration of revolving dial (9) and Integral pedestal (7), horizontal slide (8) is in mating connection with the guide rail of revolving dial (9) upper surface, pillar parts is fixed on horizontal slide (8), milling head parts are fixed on the upper end of pillar parts by milling head support (1), work piece platform (5) is fixed on the top of the studdle (6) of Integral pedestal (7) circle distribution, milling head parts are through the centre bore in work piece platform (5), work mounting s (4) radially slides and is arranged on work piece platform (5) upper surface, work mounting s (4) is a plurality of and is circumferentially uniformly distributed along work piece platform (5).

2. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: described drive unit adopts servomotor I(10) by decelerator I(11) auxiliary driving of driving worm and gear.

3. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: described pillar parts comprises Upright post base (24), on outer circumference surface, offer the circular lifting column (2) of gathering sill, positioning adapter (26), directed briquetting (25), ball screw assembly, III(22), nut seat (23), decelerator III(21) and servomotor III(20), circular lifting column (2) is slidably mounted in the positioning adapter (26) in Upright post base (24), on the sidewall of Upright post base (24) and positioning adapter (26), offer locating hole, directed briquetting (25) is fixed in locating hole, and coordinate with the gathering sill on circular lifting column (2), servomotor III(20) be fixed on Upright post base (24), and by decelerator III(21) drive ball screw assembly, III(22) rotate, ball screw assembly, III(22) drive nut seat (23) motion being fixed on circular lifting column (2).

4. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: described milling head parts comprise milling head casing (29), cutter (31), cutter shaft (30), decelerator IV(28), spindle motor (27) and the transmission mechanism that formed by a plurality of intermediate propeller shafts (32) and a plurality of travelling gear (33), described spindle motor (27) is by decelerator IV(28) drive transmission mechanism, transmission mechanism to drive cutter shaft (30) band cutter (31) work.

5. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: the center of described milling head support (1) is provided with rotating central hole, and milling head parts are arranged in rotating central hole.

6. a kind of ring gear moulding tooth milling machine according to claim 1, it is characterized in that: the ball screw assembly, II(17 that described horizontal slide (8) is connected by its bottom) drive along described guide rail and slide, ball screw assembly, II(17) by servomotor II(15) the decelerator II(16 that drives) drive.

7. a kind of ring gear moulding tooth milling machine according to claim 2, it is characterized in that: described worm couple comprises the active worm screw (12) being arranged on Integral pedestal (7), driven worm screw (14), worm gear (18), bevel gear set and the gap oil cylinder (19) that disappears, worm gear (18) is arranged on revolving dial (9) bottom, its rotation overlaps with the axis of rotation of revolving dial (9), initiatively worm screw (12) and driven worm screw (14) all mesh with worm gear, initiatively one end of worm screw (12) is by one end engagement of bevel gear set and driven worm screw (14), the other end of driven worm screw (14) is connected with the gap oil cylinder (19) that disappears, the initiatively other end and decelerator I(11 of worm screw (12)) output shaft be connected.

8. a kind of ring gear moulding tooth milling machine according to claim 1, is characterized in that: described work mounting s is provided with the fixture for fixation workpiece on (4).

Images