CN219026626U - Ball nut processingequipment - Google Patents

Abstract

The application provides a ball nut processingequipment relates to ball nut processing technology field, and ball nut processingequipment includes first chuck, sword tower and sword tower fixing base, is provided with the jack catch on the first chuck, and the jack catch is used for fixed ball nut of waiting to process, and sword tower includes milling subassembly and lathe tool subassembly, and sword tower rotationally sets up on sword tower fixing base, so that sword tower selectively switches between first position and second position, selects milling subassembly or lathe tool subassembly to wait to process ball nut, thereby can be on the basis of not changing the machine tool of processing, wait to process ball nut and carry out finish turning and milling respectively and operate, once clamping waits to process ball nut, can accomplish two kinds of machining processes, easy operation and avoided because of the error accumulation that the clamping brought, improved ball nut's machining precision.

Description

Ball nut processingequipment

Technical Field

The application relates to the technical field of ball nut processing, in particular to a ball nut processing device.

Background

The ball screw nut pair (abbreviated as a ball screw pair) is a transmission device for mutually converting rotary motion and linear motion, and comprises a ball screw and a ball nut, wherein the ball screw and the ball nut are provided with spiral grooves, and balls serving as transmission elements are arranged in the spiral grooves.

Currently, in the ball nut production process, the ball nut needs to be driven, milled and polished. Firstly, a blank of the ball nut needs to be rough machined by a lathe, secondly, the ball nut is subjected to heat treatment, the material property of the ball nut is changed, the strength and the wear resistance and the corrosion resistance are improved, then, the outer surface and the end face of the ball nut are finished by the lathe, and finally, the ball screw way is polished by a grinding wheel, and finally, the ball nut is machined.

However, the prior art cannot guarantee the final machining precision of the ball nut after finishing the outer surface finish machining of the ball nut and polishing the ball screw way.

Disclosure of Invention

The application provides a ball nut processingequipment to solve the technical problem that prior art processing ball nut can't guarantee machining precision.

In a first aspect, the present application provides a ball nut processing device comprising:

a machine tool body;

a main shaft arranged on the machine tool body,

the motor is connected with one end of the main shaft to drive the main shaft to rotate;

the first chuck is fixedly sleeved on the main shaft, and the claw of the first chuck is used for fixing the ball nut;

the tool turret comprises a milling assembly and a turning tool assembly, the tool turret is rotatably arranged on a tool turret fixing seat so that the tool turret can be selectively switched between a first position and a second position, when the tool turret is in the first position, the milling assembly is close to the clamping jaw so as to polish a screw channel of the ball nut, and when the tool turret is in the second position, the turning tool assembly is close to the clamping jaw so as to process the surface of the ball nut;

the turret fixing seat is arranged on the upper surface of the machine tool body in a sliding manner so as to drive the turret to move close to or far away from the clamping jaw.

Optionally, the turret further includes a component mounting plate, the milling component and the turning tool component are both fixed on the component mounting plate, and the component mounting plate is rotatably disposed on the turret fixing seat, so that the positions of the milling component and the turning tool component can be adjusted by rotating the component mounting plate.

Optionally, the milling assembly comprises a milling motor, the milling motor is fixedly installed on the assembly installation plate, a hollow cutter bar is fixedly installed on one side of the milling motor, one end of the hollow cutter bar is fixedly connected with one side of the milling motor with an output shaft, and a tool installation seat is arranged on the other end of the hollow cutter bar and is used for installing a processing tool;

a first transmission shaft and a second transmission shaft are sequentially arranged in the hollow cutter bar along the direction away from the tool mounting seat, one end of the first transmission shaft is connected with one end of the second transmission shaft through a universal coupling,

the other end of the second transmission shaft is connected with the milling motor, and the other end of the first transmission shaft penetrates through the tool mounting seat and is connected with the processing tool; and the second transmission shaft is used for driving the processing tool to process the ball nut through the first transmission shaft when the turret is positioned at the first position.

Optionally, the lathe tool subassembly includes lathe tool and lathe tool fixing base, lathe tool fixed mounting is in on the lathe tool fixing base, lathe tool fixing base fixed mounting is in on the subassembly mounting panel, the last projected central axis of lathe tool fixing base with the last projected central axis coincidence of milling motor or perpendicular, the orientation of lathe tool with the orientation opposite or perpendicular of milling motor's output shaft, the lathe tool with the center of chuck is located same height, in order to right ball nut processes.

Optionally, the turret fixing seat further comprises a slider, a dovetail bump is arranged on the turret fixing seat, the slider is installed on the dovetail bump in a matched mode, the slider is provided with a dovetail groove matched with the dovetail bump, the component mounting plate is arranged on the slider, and the slider slides along the dovetail bump to drive the component mounting plate to move so as to adjust the position of the turning tool.

Optionally, including first drive assembly, first drive assembly includes first driving motor and first lead screw, first driving motor fixes lathe bed body side, first lead screw sets up lathe bed body side, first lead screw with the turret fixing base cooperation is connected, first driving motor output shaft with first lead screw fixed connection, in order to drive first lead screw drives the turret fixing base is followed lathe bed body upper surface removes.

Optionally, the tool turret fixing seat is mounted on the guide rail in a matched mode, so that the tool turret fixing seat moves close to or far away from the clamping jaw.

Optionally, the machining tool is a milling cutter or a grinding wheel to machine the ball nut.

Optionally, the machine tool comprises a second fixing component and a second driving component, wherein the second fixing component is arranged on the upper surface of the machine tool body in a sliding way and opposite to the first chuck, the second driving component is arranged on the side surface of the machine tool body, the second driving assembly drives the second fixing assembly to move along the machine tool body, the second fixing assembly comprises a second chuck or a center, and the center of the second chuck or the center of the center is located at the same height as the center of the first chuck so as to be matched with the first chuck to fix a workpiece.

The utility model provides a ball nut processingequipment, ball nut processingequipment include first chuck, tool turret and tool turret fixing base, be provided with the jack catch on the first chuck, the jack catch is used for fixed ball nut of waiting to process, and the tool turret includes milling subassembly and lathe tool subassembly, and the rotatable setting of tool turret is on the tool turret fixing base, so that the tool turret selectively switches between first position and second position, selects milling subassembly or lathe tool subassembly to wait to process ball nut, thereby can be on the basis of not changing the machine tool, wait to process ball nut and carry out finish turning respectively and mill the operation, once clamping wait to process ball nut, can accomplish two kinds of machining procedures, easy operation and avoided because of the error accumulation that the clamping brought, improved the machining precision of waiting to process ball nut.

Drawings

Fig. 1 is a schematic view of an assembly of a ball nut processing device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of another angle of an assembly of a ball nut machining device according to an embodiment of the present disclosure;

FIG. 3 is a front view of a ball nut machining apparatus provided in an embodiment of the present application;

fig. 4 is a top view of a ball nut processing device according to an embodiment of the present disclosure;

fig. 5 is a top view of a turning tool assembly of the ball nut processing device according to the embodiment of the present application during operation

Fig. 6 is a schematic diagram of an assembled turret and turret fixing seat according to an embodiment of the present disclosure;

fig. 7 is an enlarged schematic view of a partial structure of a ball nut processing device according to an embodiment of the present disclosure when processing a ball screw channel;

reference numerals illustrate:

100-a machine tool body; 200-a spindle motor; 300-a main shaft box body; 400-a first chuck; 500-turret; 600-a second securing assembly; 700-a second fixing seat; 800-a first drive assembly; 900-a second drive assembly; 1000-turret holders; 1100-spindle; 1200-guide rail;

510-a milling assembly; 520-a turning tool assembly; 610-a second chuck; 810-a first drive motor; 820-a first lead screw; 910-a second drive motor; 920-a second lead screw; 1010-dovetail bump; 1020-slider

511-a tool mount; 512-grinding wheel; 513-hollow knife bar; 514-connecting flanges; 515-milling motor;

516-a second drive shaft; 517-universal coupling; 518-bearings; 519-a first drive shaft; 5110-a component mounting plate; 521, turning tools; 522-a turning tool fixing seat;

511 a-dovetail slots;

a-a first position; and B-a second position.

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

In the description of the embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Currently, in the ball nut production process, the ball nut needs to be driven, milled and polished. Firstly, a blank of the ball nut needs to be rough machined by a lathe, secondly, the ball nut is subjected to heat treatment, the material property of the ball nut is changed, the strength and the wear resistance and the corrosion resistance are improved, then, the outer surface and the end face of the ball nut are finished by the lathe, and finally, the ball screw way is polished by a grinding wheel, and finally, the ball nut is machined. In the process of finishing the outer surface and the end surface of the ball nut and polishing the ball screw way, the processing equipment needs to be replaced for many times, and each time the workpiece is clamped, the workpiece is subjected to the alignment of the polishing table, the operation is complex, and errors are accumulated, so that the processing precision cannot be ensured.

In order to solve the above problems, the present application provides a ball nut processing device, thereby simplifying the processing operation and improving the processing accuracy of the ball nut.

Fig. 1 is a schematic structural diagram of an assembly body of a ball nut processing device provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of another angle of the assembly body of the ball nut processing device provided in an embodiment of the present application, fig. 3 is a front view of the ball nut processing device provided in an embodiment of the present application, fig. 4 is a top view of the ball nut processing device provided in an embodiment of the present application, and fig. 5 is a top view of a turning tool assembly of the ball nut processing device provided in an embodiment of the present application during operation.

Referring to fig. 1 to 5, an embodiment of the present application provides a ball nut processing device, including a machine tool bed 100, a spindle 1100, a spindle box 300, a spindle motor 200, a first chuck 400, a turret 500, and a turret fixing seat 1000, where the machine tool bed 100 is a main body structure of the ball nut processing device and is used for carrying other processing components; spindle 1100 is provided on machine tool body 100.

In some examples, the spindle box 300 is fixed on the upper surface of the machine tool bed 100 and is close to the end surface of the machine tool bed 100, and is used for supporting the spindle 1100, the spindle 1100 is arranged in the spindle box 300 in a penetrating manner, the installed spindle 1100 extends along the length direction of the machine tool bed 100, the spindle motor 200 is fixed on the machine tool bed 100, and the spindle motor 200 is connected with one end of the spindle 1100 through a transmission member, so that the spindle motor 200 drives the spindle 1100 to rotate.

Wherein, the spindle motor 200 is fixed on the end surface of the machine tool body 100 to be conveniently connected with the spindle 1100; the spindle motor 200 is connected to one end of the spindle 1100 through a pulley and a belt, so that the spindle motor 200 provides power for rotation of the spindle 1100. The other end of the spindle 1100 is fixedly sleeved with a first chuck 400, the first chuck 400 is provided with a claw, and the claw is used for fixing the ball nut on the first chuck 400, so that the spindle 1100 drives the ball nut to rotate, and the ball nut is convenient to process.

The turret 500 is rotatably installed on the turret fixing seat 1000, and the turret fixing seat 1000 is slidably disposed on the upper surface of the machine tool body 100, so that the turret fixing seat 1000 drives the turret 500 to move in a direction approaching or separating from the jaws, so as to process the ball nut.

Fig. 6 is a schematic diagram of an assembled turret and turret fixing seat provided in an embodiment of the present application, and referring to fig. 2, 5 and 6, a turret 500 includes a milling assembly 510 and a turning tool assembly 520, the milling assembly 510 can process a screw channel of a ball nut, and the turning tool assembly 520 can be used for finishing an outer surface of the ball nut. In some examples, the turret 500 is in the first position a when the milling assembly 510 of the turret 500 is machining it adjacent the ball nut, and the turret 500 is in the second position B when the turning tool assembly 520 of the turret 500 is machining it adjacent the ball nut. The turret 500 is rotatably disposed on the turret fixing seat 1000, so that the turret 500 can be selectively switched between a first position a and a second position B according to a machining process of the ball nut, that is, when the turret 500 is in the first position a, the milling assembly 510 of the turret 500 is close to the ball nut fixed by the claw, the screw path of the ball nut is polished, and when the turret 500 is in the second position B, the turning assembly 520 of the turret 500 is close to the ball nut fixed by the claw, and the surface of the ball nut is machined. In other examples, the milling assembly 510 of the turret 500 may be used to machine the end face of the ball nut after the machining tool 512 is replaced.

According to the method, the tool turret 500 is rotatably arranged on the tool turret fixing seat 1000, so that the tool turret 500 is selectively switched between the first position A and the second position B, the milling assembly 510 or the turning tool assembly 520 is selected to process the ball nut to be processed, finish turning and milling operations can be respectively carried out on the ball nut to be processed on the basis of not replacing a processing machine tool, the ball nut to be processed is clamped once, two processing procedures can be completed, the operation is simple, error accumulation caused by clamping is avoided, and the processing precision of the ball nut to be processed is improved.

With continued reference to fig. 6, the turret 500 further includes an assembly mounting plate 5110, and the milling assembly 510 and the turning tool assembly 520 are each secured to the assembly mounting plate 5110, in other words, the turret 500 is secured to the assembly mounting plate 5110, and the assembly mounting plate 5110 is rotatably mounted to the turret fixing base 1000 to adjust the positions of the milling assembly 510 and the turning tool assembly 520 by rotating the assembly mounting plate 5110.

In some examples, the component mounting plate 5110 may be fixed on the turret fixing seat 1000 by bolts, in other examples, the component mounting plate 5110 may be fixed on the turret fixing seat 1000 by matching a limiting pin and a limiting hole, so as to facilitate rotation of the component mounting plate 5110; when the positions of the milling assembly 510 and the turning tool assembly 520 need to be adjusted, the bolts are removed, the assembly mounting plate 5110 is rotated by a certain angle, and then the assembly mounting plate 5110 is fixed on the turret fixing seat 1000 by using the bolts, so that the switching between the first position and the second position of the turret 500 is completed.

In other examples, the component mounting plate 5110 is mounted on the turret fixing seat 1000 by a rotatable component such as a motor, and the rotation of the component mounting plate 5110 is controlled by controlling the rotation of the motor, so as to complete the switching between the first position a and the second position B of the turret 500.

With continued reference to fig. 6 and 7, the milling assembly 510 of the turret 500 includes a milling motor 515, a hollow cutter bar 513, a tool mount 511, a machining tool 512, a first drive shaft 519, a second drive shaft 516, and a universal coupling 517, the milling motor 515 being fixedly mounted on the assembly mounting plate 5110, the hollow cutter bar 513 being fixedly mounted on one side of the milling motor 515, one end of the hollow cutter bar 513 being fixedly mounted on one side of the milling motor 515 having an output shaft through a connecting flange 514, the other end of the hollow cutter bar 513 being fixedly provided with the tool mount 511, the hollow cutter bar 513 being for supporting the tool mount 511, the tool mount 511 being for mounting the machining tool 512. A first drive shaft 519 and a second drive shaft 516 are provided in the hollow shank 513, the first drive shaft 519 and the second drive shaft 516 being disposed in sequence in a direction away from the tool mount 511. One end of the first transmission shaft 519 is connected with one end of the second transmission shaft 516 through a universal coupling 517, the other end of the first transmission shaft 519 is penetrated and installed on the tool mounting seat 511 through a bearing 518 in a matched manner, the other end of the first transmission shaft 519 is connected with the machining tool 512, the other end of the second transmission shaft 516 is fixedly connected with an output shaft of the milling motor 515, and when the tool turret 500 is located at a first position, the second transmission shaft 516 and the first transmission shaft 519 drive the machining tool 512 to machine ball nuts, namely, the milling motor 515 drives the machining tool 512 to machine the ball nuts through the second transmission shaft 516 and the first transmission shaft 519.

It will be appreciated that, since the screw channel of the ball nut is inclined at an angle relative to the end face of the ball nut, the machining tool 512 and the tool mount 511 have the same inclination angle as the screw channel of the ball nut in order for the machining tool 512 to machine the ball nut, and the milling motor 515 is connected to the machining tool 512 via the first transmission shaft 519 and the second transmission shaft 516 in order for the milling motor 515 to rotate the machining tool 512. The second transmission shaft 516 is connected with the first transmission shaft 519 through a universal coupling 517 to change the transmission direction and drive the machining tool 512 with a certain inclination angle relative to the second transmission shaft 516 to rotate. In some examples, the axis of tool mount 511 is at an angle to the axis of hollow shank 513, which may be determined based on the angle of the helix of the ball nut being machined.

With continued reference to fig. 6, the turning tool assembly 520 includes a turning tool 521 and a turning tool holder 522, wherein the turning tool 521 performs a finishing operation on the surface of the ball nut, the turning tool 521 is fixedly mounted on the turning tool holder 522, the turning tool holder 522 is fixedly mounted on the assembly mounting plate 5110, the central axes of the upper projections of the turning tool holder 522 and the turning tool 521 coincide with the central axis of the upper projection of the milling motor 515, and the turning tool 521 is oriented opposite to the orientation of the output shaft of the milling motor 515, and the turning tool 521 is located at the same height as the center of the first chuck 400 to process the ball nut. In some examples, the turning tool 521 is bolted to the turning tool mount 522, and the turning tool mount 522 is bolted to the assembly mounting plate 5110.

With continued reference to fig. 3, the turret fixing seat 1000 further includes a slider 1020, the turret fixing seat 1000 is provided with a dovetail bump 1010, the dovetail bump 1010 is perpendicular to the moving direction of the turret fixing seat 1000, the dovetail bump 1010 is provided with the slider 1020 in a matching manner, the slider 1020 is provided with a dovetail groove 511a matching with the dovetail bump 1010, the component mounting plate 5110 is detachably arranged on the slider 1020 through a bolt, when the turret 500 needs to be switched between the first position a and the second position B, the component mounting plate 5110 is detached and separated from the slider 1020, and after the position of the turret 500 is adjusted, the component mounting plate is re-fixed through the bolt. In other examples, the component mounting plate 5110 may be provided on the slider 1020 by a turntable and the position of the component mounting plate 5110 is restricted by a locating pin and a locating hole to process the ball nut. In other examples, the component mounting plate 5110 is cooperatively mounted on the slider 1020 by a rotatable component such as a motor, and the switching between the first position a and the second position B of the turret 500 is accomplished by controlling the rotation of the motor, thereby controlling the rotation of the component mounting plate 5110, which is not described herein.

The dovetail convex blocks 1010 of the turret fixing seat 1000 can enable the sliding blocks 1020 to move along the turret fixing seat 1000 and prevent the sliding blocks 1020 from being separated from the turret fixing seat 1000; in some examples, the slider 1020 is secured to the turret base 1000 by tightening bolts or limiting pins after the slider 1020 is moved to prevent the slider 1020 from moving along the dovetail tab 1010 of the turret base 1000 during the ball nut machining process.

With continued reference to fig. 2, the ball nut processing device further includes a first driving assembly 800, where the first driving assembly 800 is disposed at a side of the machine tool bed 100. The first driving assembly 800 comprises a first driving motor 810 and a first lead screw 820, the first driving motor 810 is installed on the side surface of the machine tool body 100, the first lead screw 820 is rotatably arranged on the side surface of the machine tool body 100 through a bearing, and an output shaft of the first driving motor 810 is fixedly connected with the first lead screw 820 through a coupler, so that the first driving motor 810 drives the first lead screw 820 to rotate; the turret fixing seat 1000 is provided with a nut matched with the first screw rod 820, so that the first screw rod 820 and the turret fixing seat 1000 are matched and connected together; an output shaft of the first driving motor 810 is fixedly connected with the first lead screw 820, the first driving motor 810 drives the first lead screw 820 to rotate, and the first lead screw 820 drives the turret fixing seat 1000 to move along the upper surface of the machine tool body 100.

With continued reference to fig. 2, the ball nut processing device may further include a guide rail 1200, the guide rail 1200 is disposed on the upper surface of the machine tool body 100 along the length direction of the machine tool body 100, and the turret fixing base 1000 is cooperatively mounted on the guide rail 1200, so that the turret fixing base 1000 moves along the machine tool body 100 to approach or separate from the jaws of the first chuck 400, so as to process the ball nut fixed by the jaws.

In some examples, the machining tool 512 may be a milling cutter or a grinding wheel to machine the threads or end faces of the ball nut.

With continued reference to fig. 1 and 2, the ball nut processing device further includes a second fixing assembly 600 and a second driving assembly 900, where the second fixing assembly 600 cooperates with the first chuck 400 to fix a longer workpiece, so as to facilitate processing of the workpiece; the second fixing assembly 600 is slidably disposed on the upper surface of the machine tool body 100, the second fixing assembly 600 includes a second chuck 610 or a center, the second chuck 610 or the center is located opposite to the first chuck 400, and the center of the second chuck 610 or the center is located at the same height as the center of the first chuck 400 to cooperate with the first chuck 400 to fix a workpiece; the second driving assembly 900 is disposed at a side of the machine tool body 100, and the second driving assembly 900 drives the second fixing assembly 600 to move along the guide rail 1200 of the upper surface of the machine tool body 100.

In some examples, the second driving assembly 900 includes a second driving motor 910 and a second lead screw 920, the second lead screw 920 is rotatably disposed on a side surface of the machine tool body 100 through a bearing, the second driving motor 910 is disposed on a side surface of the machine tool body 100, and an output shaft of the second driving motor 910 is fixedly connected with the second lead screw 920 through a coupling to drive the second lead screw 920 to rotate. The second fixing assembly 600 has nuts at sides thereof to be coupled with the second screw 920, so that the second fixing assembly 600 is coupled with the second screw 920. The second driving motor 910 drives the second screw 920 to rotate, and the second screw 920 drives the second fixing assembly 600 to move along the upper surface of the machine tool body 100.

When the ball nut is processed by using the ball nut processing device, the ball nut is first fixed to the first chuck 400 of the ball nut processing device, and then the outer surface of the ball nut is finish-machined by the turning tool 521 of the ball nut processing device.

After finishing finish turning of the outer surface of the ball nut, rotating the turret 500 of the ball nut machining device so that the milling assembly 510 of the turret 500 is close to the ball nut, and finally polishing a ball screw way of the ball nut by using the milling assembly 510; specifically, the linkage of the machine tool spindle, the turret fixing seat and the milling assembly is utilized to polish the ball screw way of the ball nut; finally, the processing of the appearance and the internal ball screw way of the ball nut is completed on the premise of not changing processing equipment, so that error accumulation caused by continuously clamping the ball nut is avoided, and higher processing precision is ensured.

It is to be understood that, based on the several embodiments provided in the present application, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, where none of the embodiments exceed the protection scope of the present application.

The foregoing detailed description of the embodiments of the present application has further described the objects, technical solutions and advantageous effects thereof, and it should be understood that the foregoing is merely a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims (9)

1. A ball nut processing device, comprising:

a machine tool body;

the main shaft is arranged on the machine tool body;

the main shaft motor is connected with one end of the main shaft to drive the main shaft to rotate;

the first chuck is fixedly sleeved on the main shaft, and the claw of the first chuck is used for fixing the ball nut;

the tool turret comprises a milling assembly and a turning tool assembly, the tool turret is rotatably arranged on a tool turret fixing seat so that the tool turret can be selectively switched between a first position and a second position, when the tool turret is in the first position, the milling assembly is close to the clamping jaw so as to polish a screw channel of the ball nut, and when the tool turret is in the second position, the turning tool assembly is close to the clamping jaw so as to process the surface of the ball nut;

the turret fixing seat is arranged on the upper surface of the machine tool body in a sliding manner so as to drive the turret to move close to or away from the clamping jaw;

the ball nut processing device clamps the ball nut once to finish the processing of the screw channel of the ball nut and the surface of the ball nut.

2. The ball nut machining device of claim 1, wherein the turret further comprises an assembly mounting plate, the milling assembly and the turning tool assembly are both fixed to the assembly mounting plate, and the assembly mounting plate is rotatably disposed on the turret mounting seat to adjust the positions of the milling assembly and the turning tool assembly by rotating the assembly mounting plate.

3. The ball nut machining device according to claim 2, wherein the milling assembly includes a milling motor fixedly mounted on the assembly mounting plate, a hollow cutter bar is fixedly mounted on one side of the milling motor, one end of the hollow cutter bar is fixedly connected with one side of the milling motor having an output shaft, and a tool mounting seat is provided on the other end for mounting a machining tool;

a first transmission shaft and a second transmission shaft are sequentially arranged in the hollow cutter bar along the direction away from the tool mounting seat, one end of the first transmission shaft is connected with one end of the second transmission shaft through a universal coupling, the other end of the second transmission shaft is connected with the milling motor, and the other end of the first transmission shaft penetrates through the tool mounting seat and is connected with the processing tool; and the second transmission shaft is used for driving the processing tool to process the ball nut through the first transmission shaft when the turret is positioned at the first position.

4. A ball nut processing apparatus according to claim 3, wherein the turning tool assembly comprises a turning tool and a turning tool holder, the turning tool is fixedly mounted on the turning tool holder, the turning tool holder is fixedly mounted on the assembly mounting plate, a central axis of an upper projection of the turning tool holder coincides with or is perpendicular to a central axis of an upper projection of the milling motor, an orientation of the turning tool is opposite to or perpendicular to an orientation of an output shaft of the milling motor, and a center of the turning tool and a center of the first chuck are located at the same height to process the ball nut.

5. The ball nut processing device of claim 4, wherein the turret fixing seat further comprises a slider, a dovetail bump is arranged on the turret fixing seat, the slider is mounted on the dovetail bump in a matched mode, the slider is provided with a dovetail groove matched with the dovetail bump, the component mounting plate is arranged on the slider, and the slider slides along the dovetail bump to drive the component mounting plate to move so as to adjust the position of the turning tool.

6. The ball nut processing device of claim 1, further comprising a first drive assembly, wherein the first drive assembly comprises a first drive motor and a first screw, the first drive motor is fixed on the side of the machine tool body, the first screw is arranged on the side of the machine tool body, the first screw is connected with the turret fixing seat in a matched manner, and an output shaft of the first drive motor is fixedly connected with the first screw so as to drive the first screw to drive the turret fixing seat to move along the upper surface of the machine tool body.

7. The ball nut processing device of claim 1, further comprising a guide rail disposed on an upper surface of the machine tool body along a length direction of the machine tool body, the turret fixing seat being cooperatively mounted on the guide rail to move the turret fixing seat toward or away from the jaws.

8. A ball nut processing apparatus according to claim 3, wherein the processing tool is a milling cutter or a grinding wheel to process the ball nut.

9. The ball nut processing apparatus according to any one of claims 1 to 8, further comprising a second fixing member slidably disposed on an upper surface of the machine tool body opposite to the first chuck, and a second driving member disposed on a side surface of the machine tool body, the second driving member driving the second fixing member to move along the machine tool body, the second fixing member including a second chuck or tip having a center at the same height as a center of the first chuck to fix a workpiece in cooperation with the first chuck.

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