A boring and grinding combined machining center for machining a planet carrier and a planet carrier machining process

Abstract

The application discloses a boring and grinding combined machining center for machining a planet carrier and a planet carrier machining process. In the machining process of the planet carrier, an auxiliary tool is used to clamp and position a planet carrier workpiece on a rotary disc, the rotary disc is moved to below a gantry column along an X direction, a first spindle and a second spindle on a Y-axis slide plate which can move along the transverse direction of the gantry column are used to perform multi-process machining on the planet carrier workpiece. The machining center can complete the machining of the inner hole, the outer circle and the ball channel of the planet carrier workpiece through one-time clamping. The overall structure has better rigidity, and the machining precision of the planet carrier can be better guaranteed. The application is used in the field of machining.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of machining, and more particularly relates to a boring and grinding combined machining center for machining a planet carrier and a planet carrier machining process. BACKGROUND

[0002] The planet carrier structure of a planetary reducer is relatively complex, and machining the planet carrier needs to consider machining of an inner hole, an outer circle and a longitudinal channel on the planet carrier. The existing machining equipment is difficult to integrate machining of the outer hole and the inner circle on one equipment. If machining of end faces at both ends of the planet carrier is considered, it is more difficult for the existing machine tools.

[0003] If each machining surface of the planet carrier is machined separately, changing clamping is needed between different machining procedures, which causes the machining precision of the planet carrier with high machining precision requirement to be unable to be accurately controlled. SUMMARY

[0004] The main purpose of the present application is to provide a boring and grinding combined machining center for machining a planet carrier and a planet carrier machining process, which completes machining of the planet carrier workpiece through one-time clamping to better guarantee the machining precision of the planet carrier.

[0005] According to the first aspect of the present application, a boring and grinding combined machining center for machining a planet carrier is provided, which comprises a machine tool body arranged horizontally and a workpiece spindle arranged on the machine tool body and capable of moving axially along an X direction, one side of the machine tool body is provided with a gantry column, the gantry column is provided with a Y-axis slide plate capable of moving laterally along a Y direction, the Y-axis slide plate is provided with a first spindle and a second spindle capable of moving up and down along a Z direction on the Y-axis slide plate respectively, the first spindle is provided with an outer circle grinding wheel, a tool magazine is mounted on one side of the workpiece spindle on the machine tool body, and a plurality of boring tools, milling tools or inner circle grinding wheels capable of being installed on the second spindle are arranged in the tool magazine.

[0006] According to the boring and grinding combined machining center for machining a planet carrier of the first aspect of the present application, the machine tool body is provided with an X-direction slide plate and an X-axis screw assembly driving the X-direction slide plate to move axially along the X direction, and the workpiece spindle is a rotary disc installed on the X-direction slide plate.

[0007] According to the boring and grinding combined machining center for machining a planet carrier of the first aspect of the present application, a plurality of clamping grooves and a center locking area located in the middle of each clamping groove are radially arranged on the rotary disc, a plurality of clamping screw holes are arranged in the center locking area, and the X-axis screw assembly can drive the X-direction slide plate to move along the X direction so that the rotary disc is located directly below the first spindle or the second spindle.

[0008] According to the embodiment of the first aspect of the present application, the boring-milling combined machining center for machining the planet carrier is characterized in that the gantry column is arranged across the X-direction slide plate, the gantry column is provided with a Y-axis screw assembly transverse to the X-axis screw assembly and arranged horizontally, a Y-axis slide plate is driven by the Y-axis screw assembly to move horizontally along the Y-axis, the Y-axis slide plate is provided with a first Z-direction slide plate driven by a first Z-direction screw assembly to move along the Z-axis and a second Z-direction slide plate driven by a second Z-direction screw assembly to move along the Z-axis, the first spindle is arranged on the first Z-direction slide plate, and the second spindle is arranged on the second Z-direction slide plate.

[0009] According to the embodiment of the first aspect of the present application, the boring-milling combined machining center for machining the planet carrier is characterized in that the upper and lower slide rails are arranged on the upper and lower sides of the Y-axis screw assembly on the gantry column, the back side of the Y-axis slide plate is provided with an upper slide block and a lower slide block respectively buckled into the upper slide rail and the lower slide rail to move horizontally, and the upper and lower side guards are arranged between the Y-axis slide plate and the gantry column, the upper side guard is arranged above the upper slide rail, and the lower side guard is arranged below the lower slide rail.

[0010] According to the embodiment of the first aspect of the present application, the boring-milling combined machining center for machining the planet carrier is characterized in that the first Z-direction slide rails are arranged on the two sides of the first Z-direction screw assembly on the Y-axis slide plate, the two sides of the back of the first Z-direction slide plate are buckled into the first Z-direction slide rails by the first Z-direction slide blocks to guide and slide, and the U-shaped buckling plates are arranged on the two sides of the first Z-direction screw assembly on the Y-axis slide plate, the two sides of the first Z-direction slide plate are reversely folded back and buckled into the U-shaped buckling plates to close the two outer sides of the first Z-direction slide rails.

[0011] According to the embodiment of the first aspect of the present application, the boring-milling combined machining center for machining the planet carrier is characterized in that the second Z-direction slide rails are arranged on the two sides of the second Z-direction screw assembly on the Y-axis slide plate, the two sides of the back of the second Z-direction slide plate are buckled into the second Z-direction slide rails by the second Z-direction slide blocks to guide and slide, and the U-shaped buckling plates are arranged on the two sides of the second Z-direction screw assembly on the Y-axis slide plate, the two sides of the second Z-direction slide plate are reversely folded back and buckled into the U-shaped buckling plates to close the two outer sides of the second Z-direction slide rails.

[0012] According to the embodiment of the first aspect of the present application, the boring-milling combined machining center for machining the planet carrier is characterized in that the tool magazine comprises a support column and a disc-shaped magazine disc horizontally arranged on the top of the support column, a plurality of arc-shaped tool clamping openings are arranged at equal angles on the outer periphery of the disc-shaped magazine disc, the axes of the tool clamping openings are vertically arranged, and different specifications of boring tools, milling tools or internal grinding wheels are arranged in the tool clamping openings.

[0013] The boring and grinding combined machining center for machining the planet carrier according to the first aspect of the present application is provided with a grinding wheel modifier shaft vertically upwardly arranged on the X-direction slide plate.

[0014] The process for machining the planet carrier using the boring and grinding combined machining center according to the second aspect of the present application comprises the following steps:

[0015] The planet carrier workpiece to be machined is fixedly installed on the rotary disc through a tooling, and the first spindle and the second spindle are respectively aligned with the workpiece to complete the positioning of the central shaft;

[0016] The upper end surface of the planet carrier workpiece to be machined is machined by the external grinding wheel installed on the first spindle, and the external grinding wheel is lowered by the first spindle to machine the lower end surface of the planet carrier workpiece to be machined by the back side of the external grinding wheel;

[0017] The ball track of the outer periphery of the planet carrier workpiece to be machined is machined by the external grinding wheel installed on the first spindle;

[0018] The internal hole of the planet carrier workpiece to be machined is machined by alternately installing the boring tool, the milling tool and the internal grinding wheel on the second spindle;

[0019] The external grinding wheel and the internal grinding wheel are modified by the grinding wheel modifier during the above machining process.

[0020] The above technical solution of the present application has at least one of the following advantages or beneficial effects:

[0021] The boring and grinding combined machining center for machining the planet carrier and the planet carrier machining process have the following advantages: during the machining of the planet carrier, the planet carrier workpiece to be machined is clamped and positioned on the rotary disc through an auxiliary tooling, the rotary disc is moved along the X-direction to below the gantry column, the first spindle and the second spindle on the Y-axis slide plate which can move along the transverse direction of the gantry column are used to machine the planet carrier workpiece in multiple processes, the machining center completes the machining of the internal hole, the external circle and the ball track of the planet carrier workpiece through one clamping, the overall structure has better rigidity, and the machining precision of the planet carrier can be better guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in combination with the drawings and embodiments;

[0023] Fig. 1 is a structural schematic view of the boring and grinding combined machining center for machining the planet carrier in the embodiment of the present application;

[0024] Fig. 2 is a structural schematic view of the first embodiment of the planet carrier workpiece for machining in the embodiment of the present application;

[0025] Fig. 3is a second embodiment structure diagram of a planetary carrier workpiece used for machining in an embodiment of the present application;

[0026] Fig. 4 is a third embodiment structure diagram of a planetary carrier workpiece used for machining in an embodiment of the present application. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below with reference to the attached drawings.

[0028] In the description of the present application, it needs to be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0030] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0031] In the description of the present application, it needs to be pointed out that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements, indirect communication or the interaction relationship between two elements.

[0032] The following disclosure provides many different embodiments or examples for implementing different aspects, embodiments, or examples of the present application.

[0033] Reference Figs. 1 to 4As shown, a boring and grinding combined machining center for planetary carrier machining is provided, which comprises a horizontally arranged machine tool body 100 and a workpiece spindle 110 arranged on the machine tool body 100 and axially movable along the X direction, one side of the machine tool body 100 is provided with a gantry column 200, the gantry column 200 is provided with a Y-axis slide plate 210 transversely movable along the Y direction, the Y-axis slide plate 210 is provided with a first spindle 220 and a second spindle 230 respectively movable up and down along the Z direction on the Y-axis slide plate 210, the first spindle 220 is provided with an external grinding wheel, a tool magazine 300 is mounted on one side of the machine tool body 100 located on the workpiece spindle 110, and the tool magazine 300 is provided with a plurality of boring tools, milling tools or internal grinding wheels replaceably mounted on the second spindle 230.

[0034] The process for machining the planetary carrier by using the above-mentioned boring and grinding combined machining center according to the second aspect of the present application comprises the following steps:

[0035] The workpiece of the planetary carrier to be machined is fixedly mounted on the rotary disc through a tooling, and the first spindle 220 and the second spindle 230 are respectively aligned with the workpiece to complete the positioning of the central shaft;

[0036] The upper end surface of the workpiece of the planetary carrier to be machined is machined by the external grinding wheel mounted on the first spindle 220, and the external grinding wheel is moved downward by the first spindle 220 to machine the lower end surface of the workpiece of the planetary carrier to be machined by the back side of the external grinding wheel;

[0037] The ball track on the outer periphery of the workpiece of the planetary carrier to be machined is machined by the external grinding wheel mounted on the first spindle 220;

[0038] The internal hole of the workpiece of the planetary carrier to be machined is machined by alternately mounting the boring tool, the milling tool and the internal grinding wheel on the second spindle 230;

[0039] The external grinding wheel and the internal grinding wheel are corrected by the wheel corrector during the above-mentioned machining process.

[0040] The boring and grinding combined machining center for planetary carrier machining and the process for machining the planetary carrier in the process of machining the planetary carrier, the workpiece of the planetary carrier to be machined is clamped and positioned on the rotary disc through an auxiliary tooling, the rotary disc is moved to below the gantry column 200 along the X direction, and the first spindle 220 and the second spindle 230 on the Y-axis slide plate 210 transversely movable along the gantry column 200 are used to machine the workpiece of the planetary carrier in multiple processes, the machining center completes the machining of the internal hole, the external circle and the ball track of the workpiece of the planetary carrier through one clamping, the overall structure has better rigidity, and the machining precision of the planetary carrier can be better guaranteed.

[0041] In some embodiments of the present application, the machine tool body 100 is provided with an X-direction sliding plate 120 and an X-axis screw assembly for driving the X-direction sliding plate 120 to move along the X-axis, and the workpiece spindle 110 is a rotary disc installed on the X-direction sliding plate 120.

[0042] The X-axis screw assembly rotates to drive the X-direction sliding plate 120 to move along the X-axis, and drive the rotary disc and the planet carrier workpiece installed thereon to the lower side of the gantry column 200 for machining.

[0043] In some embodiments of the present application, a plurality of clamping grooves and a central locking area located in the middle of each clamping groove are radially arranged on the rotary disc, a plurality of clamping screw holes are arranged in the central locking area, and the X-axis screw assembly can drive the X-direction sliding plate 120 to move along the X-axis so that the rotary disc is located directly below the first spindle 220 or the second spindle 230.

[0044] The planet carrier workpiece is clamped to the rotary disc through an auxiliary tool, and is fixedly installed with the clamping groove or the central locking area on the rotary disc through bolts and other structures, so that the upper and lower end faces of the planet carrier workpiece are both suspended, facilitating the end face machining of the upper and lower end faces of the planet carrier workpiece by the external grinding wheel, thereby facilitating the completion of the entire machining process of the planet carrier workpiece by one clamping, and significantly improving the machining efficiency of the planet carrier workpiece.

[0045] In some embodiments of the present application, the gantry column 200 is arranged across the X-direction sliding plate 120, the gantry column 200 is provided with a Y-axis screw assembly perpendicular to the X-axis screw assembly and arranged transversely, a Y-axis sliding plate 210 driven by the Y-axis screw assembly to move along the Y-axis transversely, the Y-axis sliding plate 210 is provided with a first Z-direction sliding plate 221 driven by a first Z-direction screw assembly to move along the Z-axis and a second Z-direction sliding plate 231 driven by a second Z-direction screw assembly to move along the Z-axis, the first spindle 220 is arranged on the first Z-direction sliding plate 221, and the second spindle 230 is arranged on the second Z-direction sliding plate 231.

[0046] In some embodiments of the present application, the gantry column 200 is provided with upper and lower slide rails 201 and 202 parallel to each other on the upper and lower sides of the Y-axis screw assembly, the back side of the Y-axis sliding plate 210 is provided with upper and lower sliding blocks for horizontal movement by being buckled into the upper and lower slide rails 201 and 202 respectively, and the Y-axis sliding plate 210 and the gantry column 200 are provided with an upper guard plate 203 located above the upper slide rail 201 and a lower guard plate 204 located below the lower slide rail 202.

[0047] In some embodiments of the present application, the first Z-direction slide rails are arranged on the Y-axis slide plate 210 on both sides of the first Z-direction screw assembly, the two sides of the back of the first Z-direction slide plate 221 are buckled to the first Z-direction slide rails through the first Z-direction slide blocks to guide sliding, and the two sides of the back of the first Z-direction slide plate 221 are reversely folded and buckled into the U-shaped buckle plates to close the two sides of the outside of the first Z-direction slide rails.

[0048] In some embodiments of the present application, the second Z-direction slide rails are arranged on the Y-axis slide plate 210 on both sides of the second Z-direction screw assembly, the two sides of the back of the second Z-direction slide plate 231 are buckled to the second Z-direction slide rails through the second Z-direction slide blocks to guide sliding, and the two sides of the back of the second Z-direction slide plate 231 are reversely folded and buckled into the U-shaped buckle plates to close the two sides of the outside of the second Z-direction slide rails.

[0049] In some embodiments of the present application, the tool magazine 300 comprises a support column and a disc-shaped magazine disc horizontally arranged on the top of the support column, a plurality of arc-shaped tool clamping openings are arranged on the outer periphery of the disc-shaped magazine disc at equal angles, the axes of the tool clamping openings are vertically arranged, and different specifications of boring tools, milling tools or internal grinding wheels are arranged in the tool clamping openings.

[0050] In some embodiments of the present application, the X-direction slide plate 120 is further provided with a grinding wheel correction shaft 400 arranged vertically upward.

[0051] The upper guard plate 203 and the lower guard plate 204 arranged on the upper and lower ends of the Y-axis screw assembly of the gantry column 200 are connected to the upper and lower ends of the Y-axis slide plate 210 to make the connection of the Y-axis slide plate 210 with the gantry column 200 more close and firm.

[0052] The U-shaped buckle plates arranged on both sides of the first Z-direction screw assembly and the second Z-direction screw assembly are buckled into the structures reversely folded on the two sides of the back of the first Z-direction slide plate 221 and the second Z-direction slide plate 231 to make the connection between the first Z-direction slide plate 221 and the second Z-direction slide plate 231 and the Y-axis slide plate 210 more firm, and the transmission process of the first Z-direction slide plate 221 and the second Z-direction slide plate 231 during movement along the Z-direction is more stable.

[0053] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A machining process for machining a planet carrier using a boring-milling compound machining center, characterized in that, The application relates to a boring and grinding combined machining center for machining a planet carrier, which comprises a horizontally arranged machine tool body, a workpiece spindle axially movable along an X direction arranged on the machine tool body, a gantry column arranged on one side of the machine tool body, a Y-axis slide plate transversely movable along a Y direction arranged on the gantry column, a first spindle and a second spindle respectively vertically movable along a Z direction on the Y-axis slide plate, an outer circle grinding wheel arranged on the first spindle, a tool magazine installed on one side of the workpiece spindle on the machine tool body, and a plurality of boring tools, milling tools or inner circle grinding wheels replaceably arranged on the second spindle in the tool magazine; an X-direction slide plate and an X-axis screw assembly driving the X-direction slide plate to axially move along the X direction are arranged on the machine tool body, and the workpiece spindle is a rotary disc installed on the X-direction slide plate; a plurality of clamping grooves and a center locking area arranged in the middle of each clamping groove are radially arranged on the rotary disc, a plurality of clamping screw holes are arranged in the center locking area, the X-axis screw assembly can drive the X-direction slide plate to move along the X direction so that the rotary disc is located directly below the first spindle or the second spindle; the tool magazine comprises a supporting column and a disc-shaped magazine disc horizontally arranged on the top of the supporting column, a plurality of arc-shaped tool clamping openings are equiangularly arranged on the periphery of the disc-shaped magazine disc, the axes of the tool clamping openings are vertically arranged, and boring tools, milling tools or inner circle grinding wheels with different specifications are installed in the tool clamping openings. The machining process comprises the following steps: a planet carrier workpiece to be machined is fixedly installed on the rotary disc through a tooling, and the first spindle and the second spindle are respectively aligned with the workpiece to complete the positioning of the central shaft; an outer circle grinding wheel installed on the first spindle is used to machine the upper end surface of the planet carrier workpiece, and the outer circle grinding wheel is moved downward through the first spindle, and the lower end surface of the planet carrier workpiece is machined through the back side of the outer circle grinding wheel; the outer circle grinding wheel installed on the first spindle is used to machine the ball track on the periphery of the planet carrier workpiece; boring tools, milling tools and inner circle grinding wheels are alternately installed on the second spindle to machine the inner hole of the planet carrier workpiece; the outer circle grinding wheel and the inner circle grinding wheel are corrected through a grinding wheel corrector during the above machining process.

2. The machining process of machining a planet carrier using a boring-milling hybrid machining center according to claim 1, characterized in that: The gantry column is arranged across the X-direction slide plate, the gantry column is provided with a Y-axis screw assembly transversely arranged perpendicularly to the X-axis screw assembly and a Y-axis slide plate driven by the Y-axis screw assembly to transversely move along the Y axis, the Y-axis slide plate is provided with a first Z-direction slide plate driven by a first Z-direction screw assembly to move along the Z axis and a second Z-direction slide plate driven by a second Z-direction screw assembly to move along the Z axis, the first spindle is arranged on the first Z-direction slide plate, and the second spindle is arranged on the second Z-direction slide plate.

3. The machining process of machining a planet carrier using a boring-milling hybrid machining center according to claim 2, characterized in that: The upper and lower sides of the gantry column above the Y-axis screw assembly are provided with upper and lower slide rails parallel to each other, and the back side of the Y-axis slide plate is provided with upper and lower slide blocks respectively buckled into the upper and lower slide rails for horizontal movement.

4. The machining process of machining a planet carrier using a boring-milling hybrid machining center according to claim 3, characterized in that: The Y-axis slide plate is provided with first Z-direction slide rails parallel to each other on both sides of the first Z-direction screw assembly, and the back of the first Z-direction slide plate is buckled to the first Z-direction slide rails through first Z-direction slide blocks for guided sliding.

5. The machining process of machining a planet carrier using a boring-milling hybrid machining center according to claim 3, wherein: The Y-axis slide plate is provided with second Z-direction slide rails parallel to each other on both sides of the second Z-direction screw assembly, and the back of the second Z-direction slide plate is buckled to the second Z-direction slide rails through second Z-direction slide blocks for guided sliding.

6. The machining process of machining a planet carrier using a hybrid boring and honing machining center according to claim 1, characterized in that: The Y-axis slide plate is provided with U-shaped buckle plates with openings facing outward on both sides of the first Z-direction screw assembly, and the two sides of the first Z-direction slide plate are folded backward and buckled into the U-shaped buckle plates to close the outer two sides of the first Z-direction slide rails. The Y-axis slide plate is provided with U-shaped buckle plates with openings facing outward on both sides of the second Z-direction screw assembly, and the two sides of the second Z-direction slide plate are folded backward and buckled into the U-shaped buckle plates to close the outer two sides of the second Z-direction slide rails. The X-direction slide plate is further provided with a grinding wheel corrector shaft arranged vertically upward, and the grinding wheel corrector shaft is installed with a grinding wheel corrector.

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