CN107175372A - A kind of spiral bevel gear double tooth gear milling machine - Google Patents

Abstract

The invention relates to a double-station gear milling machine tool for spiral bevel gears. The spiral bevel gear double-station gear milling machine tool of the present invention is provided with two sets of processing mechanisms on its machine base, and the two sets of processing mechanisms are controlled by the control system to work together to process two workpieces at the same time. The X-direction slide table and the Y-direction slide table above, the Y-direction slide table is equipped with a stand, and the stand is equipped with a Z-direction slide table that slides up and down along the stand, one of the X-direction slide table and the Z-direction slide table One is equipped with a workpiece box for installing the workpiece, and the other is equipped with a tool box for installing the cutter head. Compared with the traditional gear milling machine with only one processing mechanism or station, the processing efficiency can be significantly improved, and compared with the simultaneous use of two The way of the gear milling machine saves a set of control system and energy consumption, and saves the floor area of the machine tool, improves the utilization rate of the space, greatly saves the cost, and has broad application prospects.

Description

A double-station gear milling machine tool for spiral bevel gears

technical field

The invention relates to a double-station gear milling machine tool for spiral bevel gears.

Background technique

Spiral bevel gear milling machine is a kind of equipment for processing spiral bevel gears. During processing, the cutter head simulates the shape wheel in space and generates and meshes with the blank workpiece of the gear to be processed to complete the processing of the gear. For general Gleason spiral bevel gears, currently used gear milling machines are all on one machine tool, using a cutter head to process a gear workpiece to be processed, such as the Chinese patent publication CN201154407Y with the authorized announcement number The spiral bevel gear CNC milling machine tool of the company uses a cutter head to process a workpiece. The machine tool includes a bed (ie machine base), a horizontal slide table and a vertical slide table on the bed, and a knife is installed on the horizontal slide table. Disc support box, the cutter head drive roller is installed on the cutter head support box, the milling cutter disc is installed on the cutter head drive roller, and the column is installed on the longitudinal slide table. The box where the column is located can be rotated on the longitudinal slide table to adjust the processing For the angle of the workpiece, a vertical slide is installed on the column, a workpiece drive box is installed on the vertical slide, and a workpiece shaft is installed in the workpiece drive box for installing the gear blank to be processed. Since this machine tool can only process one gear at a time, the processing efficiency is very low.

Contents of the invention

The object of the present invention is to provide a spiral bevel gear double-station gear milling machine tool to solve the technical problem of low machining efficiency of the traditional spiral bevel gear milling machine.

In order to achieve the above object, the technical scheme of the spiral bevel gear double-station gear milling machine tool of the present invention is: the spiral bevel gear double-station gear milling machine tool includes a support, and the support is provided with two sets of processing mechanisms and can control two A set of processing mechanism coordinates the control system to process two workpieces at the same time. The processing mechanism includes the X-direction sliding table and the Y-direction sliding table on the machine base. The Z-direction sliding table that the vertical frame slides up and down, one of the X-direction sliding table and the Z-direction sliding table is provided with a workpiece box for installing workpieces, and the other is provided with a tool box for installing a cutter head.

The Y-direction slides of the two sets of processing mechanisms are located between two opposite X-direction slides.

The two X-direction slides of the two sets of processing mechanisms share the same motor, and the transmission path between the motor and the two X-direction slides is provided with a switch that can switch and drive one of the two X-direction slides or simultaneously drive two X-direction slides. Switching mechanism to slide table.

The X-direction slides of the two sets of processing mechanisms are all driven by the lead screw nut pair, and the lead screws of the two sets of lead screw nut pairs are arranged coaxially, the screw threads of the two lead screws have opposite directions of rotation, and a There is a clutch that can realize the synchronous rotation of two leading screws, and one end of one of the leading screws away from the clutch is provided with a longitudinal motor that drives the leading screw to rotate.

The tool box is arranged on the Z-direction slide table, and the workpiece box is arranged on the X-direction slide table.

The two Z-direction sliding tables of the two sets of processing mechanisms are driven by the same motor.

The vertical frames of the two sets of processing mechanisms are integrated, the vertical frame is equipped with a vertical motor, the output shaft of the vertical motor is equipped with a driving gear, the Z-direction sliding table is equipped with a screw nut pair, and the wires of the two screw nut pairs There are driven gears on the bars, the driving gear and the two driven gears are meshed and driven at the same time, and the two Z-direction sliding tables are respectively driven to move at the same time through the screw nut pair.

The two lead screws driving the two Z-direction sliding tables are arranged parallel to each other, and the lead screws rotate in opposite directions, respectively driving the tool boxes on the two Z-direction sliding tables to move towards or away from each other in the Z direction.

The X-direction slide table is provided with an arc-shaped chute for adjusting the angle of the workpiece box when sliding along it.

The beneficial effects of the present invention are: the spiral bevel gear double-station gear milling machine tool of the present invention is provided with two sets of processing mechanisms on its base, and the control system controls the two sets of processing mechanisms to cooperate to process two workpieces at the same time, Compared with the traditional gear milling machine with only one processing mechanism or station, it can significantly improve the processing efficiency, and compared with the method of using two gear milling machines at the same time, it saves a set of control system and energy consumption, and saves the cost of the machine tool. It occupies an area, improves the utilization rate of the space, greatly saves the cost, and has broad application prospects.

Further, the threads of the screw threads of the two X-direction slides are in the opposite direction, which ensures that when the two lead screws rotate in one direction driven by the same motor, the X-direction slides driven by them can be synchronously facing or departing from each other. sports.

Furthermore, the setting of the clutch between the two lead screws of the two X-direction slides makes the tool setting operation of the two workpieces more convenient, and also facilitates the adjustment of the relative position between the two workpieces.

Further, the screw threads of the two Z-direction slides have the opposite direction of rotation, which is transmitted through the movement of the gears, thus ensuring that when the two lead screws rotate in one direction driven by the same motor, the Z-direction slides driven by them will It can move towards or away from each other synchronously, so as to cooperate with two X-direction sliding tables to form a cutting motion for gear cutting.

Description of drawings

Fig. 1 is the embodiment structural representation of spiral bevel gear double station gear milling machine tool of the present invention;

FIG. 2 is a schematic diagram of another perspective of FIG. 1;

In the figure: 1- machine base, 2- the first guide rail in X direction, 3- the first screw screw in X direction, 4- the first workpiece box, 5- the first X direction slide table, 6- the first workpiece driving motor, 7 -Z to the first lead screw, 8-column, 9-Z to the first guide rail, 10-first driven gear, 11-driving gear, 12-stand motor, 13-second driven gear, 14-Z To the second lead screw, 15-Z to the second guide rail, 16-the second workpiece box, 17-the second workpiece drive motor, 18-X to the second guide rail, 19-X to the second lead screw, 20-longitudinal motor , 21-the second X-direction slide table, 22-the second workpiece to be processed, 23-clutch, 24-the second cutterhead, 25-the second tool box, 26-the first tool box, 27-Y guide rail, 28 -Y slide table, 29-the first cutter head, 30-the first workpiece to be processed, 31-transverse motor.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The specific embodiment of the spiral bevel gear double-station gear milling machine tool of the present invention, as shown in Figure 1 to Figure 2, the X direction in this embodiment refers to the longitudinal direction of the machine tool, the Y direction refers to the transverse direction of the machine tool, and the Z direction refers to up and down direction. The spiral bevel gear double-station gear milling machine tool includes a machine base 1, on which two sets of processing mechanisms are used to simultaneously process two gear blanks to be processed. The spiral bevel gear double-station gear milling machine also includes a control system that can control the coordinated action of two sets of processing mechanisms to process two workpieces to be processed at the same time. The control system is composed of an electric control part and an actuator. The actuator mainly refers to the motor, the screw nut pair, etc. The processing mechanism includes an X-direction slide table and a Y-direction slide table 28 arranged on the machine base, wherein the X-direction slide table is composed of the first X-direction slide table 5 and the second X-direction slide table 21 arranged on the left and right. The first X-direction guide rail 2 and the X-direction second guide rail 18 are provided, and the first X-direction slide table 5 and the second X-direction slide table 21 slide on the X-direction first guide rail 2 and the X-direction second guide rail 18 respectively. The two X-direction slides are driven by the same longitudinal motor 20. Specifically, the first X-direction lead screw 3 and the X-direction second lead screw 19 are respectively arranged on the first and second X-direction slides. The threads of the two lead screws The direction of rotation is opposite, the two lead screws are connected by a clutch 23 and arranged coaxially, the end of the lead screw on the right is connected to the longitudinal motor 20, when the clutch 23 is closed, driven by the longitudinal motor 20, the two lead screws It can rotate synchronously, thereby driving the first and second X-direction sliding tables on the two lead screws to move towards or away from each other synchronously. That is, the longitudinal motor 20 drives the second lead screw 19 to rotate in the X direction, thereby driving the second X-direction sliding table 21 to move left or right in the horizontal direction. The screw 3 drives the first X-direction slide 5 to also move in the horizontal direction. Since the screw threads (threads) of the first X-direction screw 3 and the second X-direction screw 19 have opposite directions of rotation, the first X-direction slide The movement directions of the table 5 and the second X-direction sliding table 21 are opposite or opposite.

The first and second X-direction slide tables are respectively provided with a first workpiece box 4 and a second workpiece box 16, and the first and second workpiece boxes are respectively used to install the first workpiece 30 to be processed and the second workpiece 22 to be processed, the workpiece One side of the lower part of the box is hinged on the X-direction slide table through the hinge shaft, and the workpiece box can rotate around the hinge shaft. At the same time, the lower part of the workpiece box is provided with a boss, which slides and fits with the arc-shaped chute on the X-direction slide table. The installation angle of the workpiece to be processed installed on the workpiece box can be adjusted during the horizontal rotation process. In addition, the first and second workpiece boxes are respectively provided with a first workpiece drive motor 6 and a second workpiece drive motor 17, and the output shafts A and B of the first and second workpiece drive motors are respectively equipped with the above-mentioned workpieces to be processed, The workpiece driving motor can drive the workpiece to be processed to rotate, so as to realize one of the movements during the processing of the workpiece.

The base 1 is also provided with a guide rail 27 along the Y direction, and the Y slide table 28 slides on the Y guide rail 27. The Y slide table 28 is a shared slide table of two sets of processing mechanisms, and the Y slide table 28 is located on two Between the X-direction slide tables, as shown in FIG. 2 , the Y-direction slide table is driven by the transverse motor 31 and the corresponding lead screw nut pair arranged at the rear, and the Y-direction slide table reciprocates laterally along the Y guide rail 27 . There is a column 8 on the Y-direction slide table 28. The column 8 is a shared column of two sets of processing mechanisms. The guide rails are the first Z-direction guide rail 9 and the Z-direction second guide rail 15 respectively. Two Z-direction sliding tables are slidably mounted on the two guide rails respectively, and the first tool box 26 and the second tool box 26 are respectively installed on the Z-direction sliding tables. Box 25, two Z-direction sliding tables are respectively coupled with a Z-direction first lead screw 7 and a Z-direction second lead screw 14, and the upper ends of the two lead screws are respectively provided with a first driven gear 10 and a second driven gear 13. The top of the stand is equipped with a stand motor 12, the output shaft of the stand motor 12 extends downwards, and the output shaft is fixed with a driving gear 11, the driving gear 11 is located between the two driven gears and is connected to the two slaves respectively. Driven gear meshing transmission, the helical directions of the first Z-direction screw 7 and the Z-direction second screw 14 are opposite, so that the two Z-direction slides coupled with it can respectively drive the first tool under the drive of the same drive gear. Box 26 and the second tool box 25 relative or opposite lifting motion. All be provided with cutter driving device in the first cutter case 26 and the second cutter case 25, the first cutter head 29 and the second cutter head 24 of identical geometric parameter are respectively installed on the output shaft of cutter drive device, are driven by respectively The device drives the rotation.

The first driven gear 10, the driving gear 11 and the second driven gear 13 are cylindrical gears.

The control function of the control system is mainly reflected in the following aspects: first, control the start and stop of the longitudinal motor 20, control the rotation speed of the longitudinal motor 20, and control the rotation direction of the longitudinal motor 20; secondly, control the closing and disconnection of the clutch 23; control the first 1. Start and stop, turn and speed of the second workpiece drive motor; control the start and stop, turn and speed of the stand motor 12; control the start and stop, turn and speed of the horizontal motor 31; control the first and second tool boxes The start and stop, steering and speed of the tool drive device.

When the machine tool of the present invention processes the gear workpiece, it operates as follows:

The first step: install the first cutter head 29 and the second cutter head 24 on the tool box respectively, install the first workpiece 30 to be processed and the second workpiece 22 to be processed on the workpiece box respectively, and according to the design parameters, place the first The workpiece box 4 and the second workpiece box 16 are respectively adjusted in place along the arc-shaped chute on the respective workbench.

The second step: disconnect the clutch 23, disconnect the first lead screw 3 and the second lead screw 19 to the X direction, start the longitudinal motor 20, and the first X direction slide table 5 is in a static state; The second X-direction slide table 21 is used when it is closer to the corresponding tool box, and the purpose is to allow a safe distance first to prevent the second workpiece box 16 from contacting the corresponding cutter head earlier than the first workpiece box 4 .

Step 3: Engage the clutch 23, connect the first X-direction screw 3 and the second X-direction screw 19, start the longitudinal motor 20, and drive the first X-direction sliding table 5 to move right along the X-axis, and the second The X-direction sliding table 21 moves leftward along the X-axis guide rail, and stops when the first workpiece 30 to be processed reaches the initial processing position relative to the first cutter head 29 for tool setting.

Step 4: Disconnect the clutch 23 again. At this time, the second X-direction sliding table 21 can be moved to the left along the X-axis guide rail to reach the initial processing position relative to the second cutterhead 24, and the second workpiece 22 to be processed is processed. Against the knife. Engage the clutch 23 to prepare for gear machining.

The fifth step: start the numerical control system module of the control system, the numerical control system respectively drives the Y-direction sliding table 28 to move along the Y direction through the horizontal motor 31, the stand motor 12 and the first workpiece drive motor 6, and drives the first tool box 26 to move along the Z direction. Direction movement and driving the rotation of the first workpiece 30 to be processed around the A-axis, these three movements complete the generative machining of the first workpiece 30 to be processed. Simultaneously, the rotation of the transverse motor 31 will also synchronously drive the second tool box 25 to move along the Z direction, and the second workpiece drive motor 17 will drive the second workpiece 22 to be processed to rotate around the B axis, combined with the Y direction of the Y slide table 28. These three movements complete the generative machining of the second workpiece 22 to be processed. At the same time, the numerical control system drives the first X-direction slide table 5 and the second X-direction slide table 21 through the longitudinal motor 20 to drive the first workpiece box 4 and the second workpiece box 16 to make relative feed motions along the X direction to reach the cutting depth. Simultaneous processing of two gears is realized.

Step 6: When the first tooth surface is processed, the numerical control system controls the longitudinal motor 20 to respectively drive the first X-direction sliding table 5 and the second X-direction sliding table 21 to retreat, and the first workpiece drive motor 6 and the second workpiece drive The motor 17 respectively drives the first workpiece to be processed 30 and the second workpiece to be processed 22 to rotate and carry out the tooth division movement, and the rotary cutter head returns to the initial processing position. The CNC system controls the linkage of the X, Y, Z, A and B axes, and starts the processing of the second tooth surface, and so on. The machining of all the teeth on the first workpiece 30 to be processed and the second workpiece 22 to be processed is completed.

Step 7: After the first workpiece 30 to be processed and the second workpiece 22 to be processed are processed, the first tool box 26, the second tool box 25, the first X-direction slide table 5 and the second X-direction slide table 21 return to the In a safe position, remove the gear workpiece, install a new gear workpiece, reinstall the new workpiece gear, and repeat the fifth step for processing.

In other embodiments: the X direction can also refer to the transverse direction of the machine tool, and the Y direction refers to the longitudinal direction of the machine tool, the positions of the tool box and the workpiece box can be exchanged; the transmission modes of the two X-direction sliding tables of the two sets of processing mechanisms are also replaced The method is as follows: a switching mechanism is set on the transmission path between the motor driving the two X-direction slides and the two X-direction slides. The switch mechanism can switch three modes, one of which is to switch to the first X-direction driven by the motor. The second is to switch to the movement of the second X-direction sliding table driven by the motor, and the third is to switch to the movement of the first and second X-direction sliding tables driven by the motor at the same time, and at this time the two X-direction slides are Movement toward or away from each other.

Claims (9)

1. spiral bevel gear double tooth gear milling machine, it is characterized in that, including support, the support provided with two sets of organisation of workings with And two sets of organisation of working co-operatings are can control to process the control system of two workpiece simultaneously, organisation of working includes being located at support On X to slide unit and Y-direction slide unit, Y-direction slide unit is provided with stand, and stand is provided with the Z-direction slide unit slided up and down along stand, X to One of them of slide unit and Z-direction slide unit are provided with the workpiece box for installing workpiece, and another is provided with the toolbox for installing cutterhead.

2. spiral bevel gear double tooth gear milling machine according to claim 1, it is characterized in that, two sets of organisation of workings Y-direction slide unit is located at two X being oppositely arranged between slide unit.

3. spiral bevel gear double tooth gear milling machine according to claim 1 or 2, it is characterized in that, two sets of processing machines Two X of structure share same motor to slide unit, and the motor and two X are provided with to the drive path of slide unit and allow hand over driving Two X one into slide unit drive switching mechanisms of two X to slide unit simultaneously.

4. spiral bevel gear double tooth gear milling machine according to claim 2, it is characterized in that, two sets of organisation of workings X is driven to slide unit by screw pair, and the leading screw of two sets of screw pairs is coaxially arranged, the rotation of the screw thread of two leading screws To on the contrary, provided with the clutch that two screw synchronous rotations can be achieved, the remote clutch of one of leading screw between two leading screws One end provided with drive leading screw rotate longitudinal motor.

5. spiral bevel gear double tooth gear milling machine according to claim 1 or 2, it is characterized in that, the toolbox is set On Z-direction slide unit, workpiece box is arranged on X on slide unit.

6. spiral bevel gear double tooth gear milling machine according to claim 5, it is characterized in that, two sets of organisation of workings Two Z-direction slide units are driven by same motor.

7. spiral bevel gear double tooth gear milling machine according to claim 6, it is characterized in that, the stand of two sets of organisation of workings It is wholely set, stand is provided with stand motor, stand motor output shaft is provided with driving gear, and Z-direction slide unit is provided with leading screw spiral shell It is female secondary, driven gear is equipped with the leading screw of two screw pairs, driving gear and two driven gears are while engaged transmission And drive two Z-direction slide units to move simultaneously respectively by screw pair.

8. spiral bevel gear double tooth gear milling machine according to claim 7, it is characterized in that, drive two Z-direction slide unit fortune Dynamic two leading screws arrangement parallel to each other, leading screw is oppositely oriented, drives the toolbox on two Z-direction slide units to do phase in Z-direction respectively To or the elevating movement that deviates from.

9. spiral bevel gear double tooth gear milling machine according to claim 5, it is characterized in that, the X is provided with to slide unit The arc chute of adjustment angle when being slid along for the workpiece box.