CN107150259A - A kind of special axle rotary index processing unit (plant) of machining center the 4th of pump cover - Google Patents

Abstract

The invention provides a fourth-axis rotary indexing processing device for a special machining center for pump covers, which includes a rotary indexing part to realize the function of rotating and indexing a workpiece according to a preset angle; The clamp body part realizes the installation, positioning and clamping function of the workpiece; the auxiliary support part connected with the clamp body part realizes the function of improving the rigidity of the rotary indexing processing device system; the servo motor, the proximity switch and the micro The electrical control components connected with the manual switch, etc. realize the initial zero position setting of the whole device and the corresponding angle rotation, index positioning and control of the start and stop of the machining center according to the requirements of the preset program. The whole device finally completes the pump cover zero in the same The problem of large-scale continuous automatic processing of processing features at different positions on the processing surface.

Description

A fourth-axis rotary indexing machining device for a special machining center for pump covers

technical field

The invention relates to a mechanical processing device, in particular to a fourth-axis rotary indexing processing device for a special processing center for a pump cover.

Background technique

Machining center machine tools have been quite popular in the field of machinery manufacturing, but the vast majority of machining centers are still in the category of three-axis machine tools. When machining complex parts on the three-axis machining center, such as pump cover, pump body and other parts, it needs to be clamped and fixed multiple times, the processing procedures are scattered, and the multiple clamping affects the positioning accuracy, so that the processed workpieces are processed on the same processing surface The positional tolerance between the processing features (such as planes, holes, grooves, etc.) On the one hand, the total processing time of the product is greatly increased, the production efficiency is extremely low, and it is impossible to realize mass automatic production.

At present, there are two traditional solutions to solve the above problems: one is to use a high-grade CNC system with four-axis or more linkage functions. High requirements and cumbersome maintenance. Another relatively economical solution is to add a standard PMC axis drive module to the three-axis CNC system to realize the fourth axis function, that is, to install the fourth axis (rotary dividing head) on the basis of the 3-axis machining center machine tool. method, its cost input is lower than the former. The scheme can expand the processing range of the machine tool, reduce the repeated clamping of the workpiece, improve the overall processing accuracy of the workpiece, facilitate the simplification of the process, improve the production efficiency and shorten the production time. However, adding the fourth axis (rotary dividing head) to the three-axis machining center machine tool requires the machining center machine tool itself to have the fourth-axis control function (that is, the numerical control system or PLC supports the fourth-axis control) and such as servo amplifier series selection. At the same time, the fourth axis (rotary dividing head) and the standard PMC axis drive module also have defects such as relatively expensive price, complicated operation, and cumbersome maintenance. In view of above-mentioned many factors, above-mentioned two schemes all fail to popularize and promote use so far.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a fourth-axis rotary indexing processing device for the pump cover special machining center, which does not need the control function of the fourth axis of the original machining center machine tool itself, and can effectively cooperate with the machining center machine tool Complete the machining of pump cover parts.

The present invention achieves the above-mentioned technical purpose through the following technical means.

A fourth-axis rotary indexing processing device for a special machining center for pump covers, including a rotary indexing part, a clamp body part, an auxiliary support part and an electrical control part;

The rotary indexing component includes a fixed seat, a servo motor, a hollow rotary platform, a micro switch, a proximity switch, a flange and an inductive contact head, the motor shaft of the servo motor is connected to the power input shaft of the hollow rotary platform, and the The hollow rotating platform is fixed on the side of the fixed seat; the proximity switch is installed on the side of the fixed seat, the micro switch is installed on the top surface of the fixed seat, the flange is fixed on the hollow rotating platform, and is connected with the hollow The rotating platform is coaxial, the sensing contact is installed on the flange through the bracket, and the sensing contact and the proximity switch are located on the same straight line;

The clamp body part is used to fix and clamp the processing parts of the pump cover, and one end of the clamp body part is provided with a short shaft connected with the flange through a thread;

The other end of the clamp body part is installed on the auxiliary support part, and the auxiliary support part includes the top and the tailstock of the milling machine, the top is installed on the tailstock of the milling machine, and the top is taper-tightly fitted with the center hole provided on the fixture part;

The electrical control components include a controller and a numerical control system electrically connected to the controller. The servo motor, the proximity switch and the micro switch are all electrically connected to the controller. The relative position between the contact head and the proximity switch, and this position is set as the initial zero position of the device; after a working step of the pump cover processing parts is completed, the tool on the machining center machine tool touches the micro switch, and the controller sends The CNC system issues an instruction to end the current step and wait for the next step to be executed; when the CNC system sends a command to rotate a certain angle to the servo motor, the servo motor rotates and divides according to the specified angle, and the machining center machine tool starts to execute the next step. step work.

Preferably, the clamp body part includes a clamp seat, an inclined iron, a nut, a screw, a pressure plate and a limit block; the shaft at the bottom end of the pump cover processing part extends into the hole in the clamp seat, and the limit block and the inclined The irons are installed on the fixture seat for positioning the pump cover processing parts, and the pressure plate is placed on the pump cover processing parts, and the pump cover processing parts are pressed by the screw rod and the nut.

Preferably, the clamp body part further includes a gasket, and the gasket is placed between the nut and the pressure plate.

Preferably, the auxiliary supporting part further includes a raised base, and the raised base is placed at the bottom end of the tailstock of the milling machine, so that the tailstock of the milling machine is coaxial with the hollow rotating platform.

Preferably, a bottom plate is also included, and the bottom surface of the fixing seat is fixed to the bottom plate by screws.

Preferably, the apex is a movable apex.

Preferably, a mounting plate is also included, and the mounting plate is fixed on the top of the fixing seat by screws, and the micro switch and the proximity switch are both mounted on the mounting plate.

Beneficial effects of the present invention:

1) The fourth-axis rotary indexing processing device of the present invention can effectively cooperate with the original machining center machine tool, and automatically perform angle rotation, indexing positioning and control the start and stop of the machining center machine tool according to the processing requirements of the pump cover processing parts, Realize the problem of large-scale continuous automatic processing of pump cover processing parts on the same processing surface at different positions.

2) The invention has reasonable design, simple structure and convenient manufacture, which effectively solves the problems of large investment, high price, complicated operation and cumbersome maintenance of the traditional four-axis high-end CNC system.

Description of drawings

Fig. 1 is a schematic structural view of the fourth-axis rotary indexing processing device of the pump cover special processing center according to the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic diagram of installation of the micro switch and the proximity switch on the fixing plate according to the present invention.

FIG. 4 is a top view of FIG. 3 .

Fig. 5 is a three-dimensional structural schematic diagram of the fourth-axis rotary indexing processing device of the pump cover special processing center according to the present invention.

Among them: 1. Bottom plate; 2. Screw A, 3. Fixing seat; 4. Servo motor; 5. Hollow rotating platform; 6. Screw B; 7. Mounting plate; 8. Proximity switch; 9. Tighten the nut; 10. Screw C; 11. Screw D; 12. Micro switch; 13. Induction contact head; 14. Flange; 15. Screw E; 16. Fixture seat; 17. Pump cover processing parts; 18. Inclined block; 19. Nut; 20. Screw; 21. Gasket; 22. Pressure plate; 23. Limit block; 24. Top; 25. Tailstock of milling machine;

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

As shown in Figure 1 and Figure 5, the fourth-axis rotary indexing processing device of the pump cover special machining center according to the present invention includes a rotary indexing component, a clamp body component, an auxiliary support component and an electrical control component, and the rotary indexing The components include a bottom plate 1, a fixed seat 3, a servo motor 4, a hollow rotating platform 5, a mounting plate 7, a micro switch 12, a proximity switch 8, a flange 14 and an inductive contact head 13. The fixed seat 3 is L-shaped, The bottom surface of the fixed seat 3 is fixed on the base plate 1 by the screw A2, and the motor shaft of the servo motor 4 is connected with the power input shaft of the hollow rotary platform 5 to realize the function of driving the rotary machine indexing of the hollow rotary platform 5, and the hollow rotary platform 5 is passed through the screw. B6 is fixedly installed on the side of the fixed base 3, as shown in Figure 3 and Figure 4, the mounting plate 7 is fixedly installed on the top of the fixed base 3 through the screw C10, and the proximity switch 8 is installed with its own external thread and parallel nut 9. The internal threaded hole opened on the plate 7 is connected, the micro switch 12 is fixed on the upper surface of the switch fixing plate 7 by the screw D11, and the flange 14 is fixed on one end of the hollow rotating platform by the screw E15.

As shown in Figure 2, the clamp body parts include a clamp seat 16, an inclined iron 18, a nut 19, a screw 20, a gasket 21, a pressure plate 22 and a limit block 23, and one end of the clamp seat 16 is provided with a flange 14. The short axis matched with the ring is threadedly connected with the inner ring of the flange 14, and the sensing contact 13 is installed on the flange 14 through a bracket, and the sensing contact 13 and the proximity switch 8 are located on the same straight line. The short axis at the bottom of the pump cover processing part 17 is matched with the clearance of the hole on the fixture seat 16, and cooperates with the limit block 23 and the inclined iron 18. The pump cover processing part 17 is pressed on the clamp seat 16, and the gasket is placed between the nut 19 and the pressing plate 22.

As shown in Figure 1, the auxiliary support components include a top 24, a milling machine tailstock 25 and a raised base 26, the top 24 is a movable top, and the shank of the top 24 passes through its own outer conical surface and the inner hole provided on the milling machine tailstock 25. The taper surface is taper-tightly matched to improve the rigidity of the entire rotary indexing processing device system. The tailstock of the milling machine is installed on the heightened base 26 through the screw F27, so that the top 24 is coaxial with the hollow rotary platform 5 .

The electrical control components include a controller and a numerical control system electrically connected to the controller, and the servo motor 4, the proximity switch 8 and the micro switch 12 are all electrically connected to the controller. Before the pump cover processing part 17 starts processing, it is necessary to manually adjust the relative position between the inductive contact head 13 and the proximity switch 8 after correcting the position of the clamp body, and set this position as the initial zero position of the device; After the pump cover processing part 17 finishes processing a working step, the tool on the machining center machine tool touches the micro switch 12, and the controller sends an instruction to the numerical control system to end the current working step and wait for the execution of the next working step; Set the size of the rotation angle and the number of rotation angles to be rotated. When the CNC system sends a command to rotate a certain angle to the servo motor 4, the servo motor 4 rotates and divides according to the specified angle, and the machining center machine tool starts to execute the next step. Work. At this point, the entire device can automatically perform angle rotation, index positioning and control the start and stop of the machining center machine tool according to the processing requirements of the pump cover processing part 17, thereby solving the problem of processing characteristics of the pump cover processing part 17 at different positions on the same processing surface. The problem of continuous automatic processing of large batches

The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.

Claims (7)

1. A fourth-axis rotary indexing processing device of a special machining center for pump covers, characterized in that it includes a rotary indexing component, a clamp body component, an auxiliary support component and an electrical control component; The rotary indexing part includes a fixed base (3), a servo motor (4), a hollow rotary platform (5), a micro switch (12), a proximity switch (8), a flange (14) and an inductive contact head ( 13), the motor shaft of the servo motor (4) is connected to the power input shaft of the hollow rotary platform (5), and the hollow rotary platform (5) is fixed on the side of the fixed seat (3); the proximity switch (8 ) is installed on the side of the fixed seat (3), the micro switch (12) is installed on the top surface of the fixed seat (3), the flange (14) is fixed on the hollow rotating platform (5), and is connected with The hollow rotating platform (5) is coaxial, the sensing contact (13) is mounted on the flange (14) through a bracket, and the sensing contact (13) and the proximity switch (8) are located on the same straight line; The clamp body part is used for fixing and clamping the pump cover processing part (17), and one end of the clamp body part is provided with a short shaft connected with the flange (14) through threads; The other end of clamp body part is installed on the auxiliary supporting part, and described auxiliary supporting part comprises top (24) and milling machine tailstock (25), and described top (24) is installed on the milling machine tailstock (25), and top (24) ) and the center hole opened on the fixture parts for taper tight fit; The electrical control components include a controller and a numerical control system electrically connected to the controller, the servo motor (4), the proximity switch (8) and the micro switch (12) are all electrically connected to the controller, and the pump cover processing Before the part (17) starts processing, manually adjust the relative position between the induction contact head (13) and the proximity switch (8), and set this position as the initial zero position of the device; the pump cover processing part (17) is processed After a working step is finished, the tool on the machine tool of the machining center touches the micro switch (12), and the controller sends an instruction to the CNC system to end the current working step and wait for the next working step; After reaching the servo motor (4), after the servo motor (4) rotates and indexes according to the specified angle, the machining center machine tool starts to perform the work of the next working step. 2. The fourth-axis rotary indexing processing device of a pump cover special machining center according to claim 1, wherein the clamp body parts include a clamp seat (16), an inclined iron (18), a nut ( 19), screw rod (20), pressing plate (22) and limit block (23); the shaft at the bottom end of the pump cover processing part (17) extends into the hole in the clamp seat (16), and the limit block (23 ) and inclined iron (18) are installed on the fixture seat (16), used for positioning the pump cover processing parts (17), the pressure plate (22) is placed on the pump cover processing parts (17), through the screw rod (20 ) and nut (19) compress the pump cover processing part (17). 3. The fourth-axis rotary indexing processing device of a pump cover special machining center according to claim 2, characterized in that, the clamp body part also includes a gasket (21), and the gasket (21) is placed Between the nut (19) and the pressure plate (22). 4. The fourth-axis rotary indexing processing device of a pump cover special machining center according to claim 1, characterized in that, the auxiliary support component also includes a raised base (26), and the raised base (26 ) is placed at the bottom of the milling machine tailstock (25), so that the milling machine tailstock (25) is coaxial with the hollow rotating platform (4). 5. The fourth-axis rotary indexing processing device of a special machining center for pump covers as claimed in claim 1, further comprising a bottom plate (1), and the bottom surface of the fixing seat (3) is fixed to the bottom plate by screws (1) on. 6. The fourth-axis rotary indexing machining device of a pump cover special machining center according to claim 1, characterized in that the center (24) is a movable center. 7. The fourth-axis rotary indexing processing device of a pump cover special machining center according to claim 1, further comprising a mounting plate (7), and the mounting plate (7) is fixed on the fixing seat by screws (3) At the top, the micro switch (12) and the proximity switch (8) are all installed on the mounting plate (7).