CN112873049A

CN112873049A - Grinding mechanism and composite grinding machine

Info

Publication number: CN112873049A
Application number: CN202110468937.1A
Authority: CN
Inventors: 雷祯亚; 邱晓华; 雷强
Original assignee: Sichuan Liyuan Precision Technology Co ltd
Current assignee: Sichuan Liyuan Precision Technology Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-06-01

Abstract

The invention discloses a grinding mechanism and a composite grinding machine, wherein the grinding mechanism is arranged on a machine body of the composite grinding machine and comprises a bottom plate, a rotating frame, a first motor and a first grinding head which are sequentially connected, wherein the bottom plate can feed along a Z axis and an X axis respectively through two feeding mechanisms arranged on the machine body, so that the first grinding head has relatively high degree of freedom in space, the posture of a machined workpiece can be flexibly adjusted, the workpiece is subjected to grinding processing such as notch, chamfer and cambered surface, the special processing requirements of the workpiece are effectively met, and the range of products processed by the composite grinding machine is expanded. The composite grinding machine disclosed by the invention is provided with a plurality of groups of grinding head components with different functions besides the grinding mechanism, and the grinding head components can be used for processing a workpiece subjected to one-time clamping in a plurality of grinding procedures such as inner circle, outer circle, step, inclined plane and the like, so that the processing precision of the workpiece is ensured, and the processing efficiency is remarkably improved.

Description

Grinding mechanism and composite grinding machine

Technical Field

The invention relates to a grinding machine in machining equipment, in particular to a grinding mechanism and a composite grinding machine, and belongs to the technical field of grinding machines.

Background

Among machining apparatuses, a grinding machine is a conventional precision machining machine, and conventional grinding machines include an internal grinding machine, an external grinding machine, a surface grinding machine, a tool grinding machine, and the like. These conventional grinding machines generally have only one grinding head and are single in function, and the internal grinding machine can only carry out internal grinding processing, and the external grinding machine can only carry out external grinding processing. The machining of a plurality of grinding processes such as inner circles, outer circles, inclined planes and the like can be completed by replacing equipment for a plurality of times on one workpiece, the machining efficiency is low, and the machining precision of the workpiece is difficult to guarantee after the workpiece is clamped for a plurality of times. Therefore, single-function grinding machines have been gradually replaced by recently-appearing multi-grinding-head compound grinding machines.

At present, the feeding direction and route of a grinding head arranged on a multi-grinding-head composite grinding machine are fixed, and only inner circle and outer circle grinding can be carried out; aiming at non-standard special-shaped workpieces, particularly workpieces with arc-shaped curved surfaces, the existing grinding head cannot grind the workpieces, so that the products which can be processed by the composite grinding machine are limited.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a grinding mechanism which can be adjusted in multiple directions. Through the grinding mechanism, the existing composite grinding machine can meet the special processing requirements of workpieces, and the problem that a grinding head cannot grind non-standard special-shaped workpieces in the prior art can be solved.

In order to achieve the purpose, the invention provides the following technical scheme:

a grinding mechanism having predetermined X, Y and Z directions, the grinding mechanism comprising:

a base plate slidable along the X direction;

the rotating frame is rotatably connected with the bottom plate and can rotate around the Y direction;

the first motor is rotationally connected with the rotating frame and can rotate around the Z direction;

the first grinding head is arranged at the output end of the first motor.

In one embodiment of the present disclosure of the present application,

the grinding mechanism further comprises a first rotary table and a second rotary table;

the first rotary table is arranged on the bottom plate, and the rotary frame is arranged on the first rotary table;

the second rotary table is arranged on the rotary frame, and the first motor is arranged on the second rotary table.

In one embodiment of the present disclosure of the present application,

the grinding mechanism also comprises a lifting plate;

the lifting plate is arranged on the rotating frame in a sliding mode, and the first motor is arranged on the lifting plate in a rotating mode with the Z direction as the direction of a rotating central line.

In one embodiment of the present disclosure of the present application,

the grinding mechanism also comprises a lifting plate;

the lifting plate is arranged on the rotating frame in a sliding mode, and the second rotary table is fixedly arranged on the lifting plate.

In one embodiment of the present disclosure of the present application,

a screw and a power source for driving the screw to rotate are arranged in the rotating frame;

the screw rod is in transmission connection with the lifting plate so as to drive the lifting plate to lift along the Y direction.

In one embodiment of the present disclosure, the first turntable and/or the second turntable is an index plate.

A compound grinding machine comprising:

the grinding machine comprises a machine body, a Z-axis feeding mechanism, an X-axis feeding mechanism and the grinding mechanism;

the Z-axis feeding mechanism is arranged on the lathe bed, the X-axis feeding mechanism is arranged on the Z-axis feeding mechanism, and the grinding mechanism is arranged on the X-axis feeding mechanism;

wherein the grinding mechanism is movable in an X-axis direction and a Z-axis direction when the X-axis feed mechanism and the Z-axis feed mechanism perform a feed motion.

In one embodiment of the present disclosure of the present application,

the Z-axis feed mechanism includes: the Z-axis guide rail, the Z-axis feeding seat, the Z-axis ball screw and the Z-axis feeding motor are arranged on the Z-axis guide rail;

the Z-axis guide rails are fixedly arranged on the lathe bed in pairs, the Z-axis feeding base is connected to the Z-axis guide rails in a sliding mode, the bottom end of the Z-axis feeding base is in transmission connection with the Z-axis ball screw, the Z-axis ball screw is in transmission connection with the Z-axis feeding motor, and the Z-axis feeding motor is arranged on the lathe bed; the X-axis feeding mechanism is arranged on the Z-axis feeding seat.

In one embodiment of the present disclosure of the present application,

the X-axis feed mechanism includes: the X-axis guide rail, the X-axis feeding seat, the X-axis ball screw and the X-axis feeding motor are arranged on the X-axis guide rail;

the X-axis guide rails are fixedly arranged on the Z-axis feeding base in pairs, the X-axis feeding base is connected to the X-axis guide rails in a sliding mode, the bottom end of the X-axis feeding base is in transmission connection with the X-axis ball screw, the X-axis ball screw is in transmission connection with the X-axis feeding motor, and the X-axis feeding motor is arranged on the Z-axis feeding base; the grinding mechanism is arranged on the X-axis feeding seat.

In one embodiment of the present disclosure of the present application,

the compound grinding machine also comprises a C-axis rotating mechanism;

the C-axis rotating mechanism is arranged along the Z-axis direction and is positioned at one end of the lathe bed;

the C-axis rotating mechanism comprises a servo electric spindle, a hydraulic rotary cylinder and a three-jaw chuck;

the hydraulic rotary cylinder is arranged on the servo electric spindle, and the three-jaw chuck is arranged at the working end of the hydraulic rotary cylinder.

In one embodiment of the present disclosure of the present application,

the compound grinding machine also comprises at least one set of grinding head components;

the bistrique subassembly includes: the Z-axis feeding module, the second motor and the second grinding head are arranged on the base;

the Z-axis feeding module is arranged on the X-axis feeding mechanism, the second motor is arranged on the Z-axis feeding module, and the second grinding head is arranged at the output end of the second motor.

In one embodiment of the present disclosure of the present application,

the second grinding head comprises a tool turret, and a first grinding wheel and a second grinding wheel which are fixedly connected to the tool turret in sequence;

the turret is connected with the output end of the second motor, the first grinding wheel is in a circular truncated cone structure, and the second grinding wheel is in a frustum structure.

Compared with the prior art, the invention has the beneficial effects that:

1. the grinding mechanism disclosed by the application can rotate in an XZ plane and an XY plane, can adjust the angle adaptively according to the shape of a workpiece, effectively meets the special processing requirements of the workpiece, can grind the non-standard special-shaped workpiece, and enlarges the range of products processed by the composite grinding machine.

2. The application discloses compound grinding machine is provided with grinding mechanism and one set of bistrique subassembly at least, but each set of bistrique subassembly autonomous working to can once only accomplish the processing of a plurality of grinding processes such as interior circle, excircle, step, inclined plane to the work piece through clamping, need not change equipment, not only guarantee the machining precision of work piece, also improve machining efficiency moreover.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a compound grinding machine according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a left side view of the structure of FIG. 1;

fig. 4 is a schematic perspective view of a compound grinding machine at another angle according to an embodiment of the present disclosure;

FIG. 5 is an enlarged view of a portion B of FIG. 4;

FIG. 6 is a schematic perspective view of the bed and two feeding mechanisms after the retractable protective cover is hidden;

fig. 7 is a schematic perspective view of one of the second grinding heads;

FIG. 8 is a schematic perspective view of one of the workpieces to be ground;

fig. 9 is a schematic perspective view of a workpiece to be ground at another angle.

The reference numbers are as follows:

100. a bed body;

200. a C-axis rotating mechanism 210, a servo electric spindle 220, a hydraulic rotary cylinder 230 and a three-jaw chuck;

300. the Z-axis feeding mechanism, 310, a Z-axis guide rail, 320, a Z-axis feeding seat, 330 and a Z-axis ball screw;

400. an X-axis feed mechanism 410, an X-axis guide rail;

500. the grinding head assembly, 500', the Z-axis feeding module, 510, the slide table base, 520, the slide table, 530, the second motor, 540, the second grinding head, 541, the cutter tower, 542, the first grinding wheel, 543, and the second grinding wheel;

600. the grinding mechanism 610, the bottom plate 620, the rotating frame 621, the screw 622, the hand wheel 630, the first motor 640, the first grinding head 650, the first rotary table 660, the second rotary table 661 and the lifting plate;

700. a telescopic protective cover;

800. and (3) grinding the workpiece, 810, inner circle, 820, outer circle, 830, step, 840, inner inclined plane, 850, notch, 860 and chamfer.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The first embodiment is as follows:

in one embodiment of the present invention, a grinding mechanism 600 applied to a compound grinding machine is disclosed, and specifically, refer to fig. 1, 2, and 5. The grinding mechanism 600 has a function of rotating in an XZ plane and an XY plane, and when the grinding mechanism 600 is arranged on a compound grinding machine, the degree of freedom of processing can be remarkably increased, and the range of products processed by the compound grinding machine is expanded.

Specifically, the grinding mechanism 600 includes:

a base plate 610 slidable in the X direction;

a rotating frame 620 rotatably connected to the base plate 610 and rotatable about the Y-direction;

a first motor 630 rotatably connected to the rotary frame 620 and rotatable in the Z direction;

and a first grinding head 640 provided at an output end of the first motor 630.

The X, Y and Z directions in this embodiment are substantially the same as the directions defined by the X, Y and Z axes in the cartesian coordinate system, and the terms including the X, Y and Z axes appearing hereinafter are substantially the same. However, it should be understood that the X, Y, and Z directions and the X, Y, and Z axes in the embodiments of the present application do not limit the specific coordinate system positions, but only indicate that the X, Y, and Z directions are perpendicular to each other. The coordinate system can thus be understood as virtual, the position of which can be adjusted accordingly, based on the understanding of the technical solutions by the person skilled in the art. For example, the grinding mechanism 600 may be constructed as one coordinate system, and the compound grinding machine having the grinding mechanism 600 may be constructed as another coordinate system, in which the coordinate axes are directed in the same direction. A coordinate system may be chosen flexibly by a person skilled in the art as a reference for understanding the solution disclosed in the present invention.

The base plate 610 may be secured to a feed table of the grinding machine that may be driven by a corresponding feed mechanism. For example, the base plate 610 is fixed on the X-axis feeding mechanism 400 of the grinding machine, and when the X-axis feeding mechanism 400 is performing an X-direction feeding operation, the base plate 610 is driven to slide along the X-direction, so that the grinding mechanism 600 as a whole can slide along the X-direction, in this implementation scenario, since the rotating frame 620 can rotate around the Y-direction relative to the base plate 610, the first motor 630 can rotate around the Z-direction relative to the rotating frame 620, so that the first grinding head 640 disposed at the output end of the first motor 630 has three degrees of freedom in space, and can relatively flexibly adjust the posture according to the shape of the workpiece, thereby facilitating the grinding of the non-standard special-shaped workpiece. When the grinding mechanism 600 is disposed on a grinding machine, the machining range of the compound grinding machine can be expanded.

In one implementation scenario, the grinding mechanism 600 is configured with a first turntable 650 and a second turntable 660.

One end of the first turntable 650 is fixedly disposed on the base plate 610, and the rotating frame 620 is disposed at the other end of the first turntable 650 such that the rotating frame 620 is rotatable about the Y direction with respect to the base plate 610 by the first turntable 650.

One end of the second turntable 660 is fixed to a side end of the rotation frame 620, and the first motor 630 is disposed at the other end of the second turntable 660 such that the first motor 630 can rotate in the Z direction with respect to the rotation frame 620 via the second turntable 660.

In an alternative embodiment, the grinding mechanism 600 further includes a lifting plate 661, that is, in this embodiment, the grinding mechanism 600 includes a base plate 610, a rotating frame 620, a first motor 630, a first grinding head 640, and the lifting plate 661. The positional relationship and the functional relationship among the bottom plate 610, the rotating frame 620, the first motor 630 and the first grinding head 640 have been described in the foregoing embodiments, and this embodiment is not repeated, and the connection relationship and the functional relationship between the lifting plate 661 are described in this embodiment.

The elevating plate 661 is slidably installed at a side end of the rotating frame 620 along the Y-direction, and the first motor 630 is rotatably installed on the elevating plate 661 with the Z-direction as a rotation center line direction. In a specific implementation scenario, a slide-like structure may be disposed on a side of the lifting plate 661 facing the rotating frame 620, and a slide-like structure may be disposed on a side of the rotating frame 620 facing the lifting plate 661, such that the lifting plate 661 can slide up and down in the Y direction relative to the rotating frame 620 through cooperation between the slide-like structure and the slide-like structure. Since the first motor 630 is disposed at the other side of the lifting plate 661, the first motor 630 along with the first grinding head 640 can also slide up and down in the Y direction.

In this embodiment, since the lifting plate 661 is additionally provided, the first grinding head 640 provided at the output end of the first motor 630 has four degrees of freedom in space, so that the posture can be relatively flexibly adjusted according to the shape of the workpiece, and the non-standard irregular workpiece can be conveniently ground and processed. When the grinding mechanism 600 is disposed on a grinding machine, the machining range of the compound grinding machine is further expanded.

In other specific implementation scenarios, referring to fig. 2 or 5, the first motor 630 is indirectly disposed on the lifting plate 661 through the second rotating table 660, such that the first motor 630 can rotate with respect to the lifting plate 661 with the Z-direction as the rotation center line. Specifically, one side of the lifting plate 661 is slidably engaged with the rotating frame 620, the other side of the lifting plate 661 is fixedly provided with a second rotating table 660, the second rotating table 660 is fixedly provided with a first motor 630, and the output end of the first motor 630 is provided with a first grinding head 640.

In other implementation scenarios, the rotating frame 620 is a hollow rectangular frame, and a screw 621 and a power source for driving the screw 621 to rotate are disposed inside the frame. The screw 621 is in transmission connection with the lifting plate 661 for drive the lifting plate 661 to go up and down along Y, and then the height of the first grinding head 640 can be adjusted, so that the first grinding head 640 can grind workpieces of different sizes, and the range of processed products is enlarged.

The power source can be manual or electric, the invention is not limited in particular, and the power source can be flexibly configured according to the precision requirement of the processed workpiece. It will be appreciated that when the power source is manual, the power source may be a hand wheel 622, and the hand wheel 622 is rotated to rotate the screw 621, so as to raise and lower the lifting plate 661, as shown in fig. 2 and 5. When the power source is electric, the power source may be a servo motor or the like, and the servo motor drives the screw 621 to rotate when working, so as to drive the lifting plate 661 to lift.

In this embodiment, the first turntable 650 and the second turntable 660 may both be index disks. The spatial position and the angle of the first grinding head 640 are adjusted through the two index plates, so that the posture of the first grinding head 640 is adjusted more accurately, and the machining precision of the workpiece is indirectly ensured.

Example two:

in another embodiment, the invention discloses a compound grinding machine using the grinding mechanism 600. The overall structure schematic diagram of the compound grinding machine can be seen in fig. 1, and the compound grinding machine comprises: a bed body 100, a Z-axis feeding mechanism 300, an X-axis feeding mechanism 400 and a grinding mechanism 600;

the Z-axis feeding mechanism 300 is arranged on the lathe bed 100, the X-axis feeding mechanism 400 is arranged on the Z-axis feeding mechanism 300, and the grinding mechanism 600 is arranged on the X-axis feeding mechanism 400;

wherein the grinding mechanism 600 is movable in the X-axis direction and the Z-axis direction when the X-axis feeding mechanism 400 and the Z-axis feeding mechanism 300 perform the feeding action. Specifically, the base plate 610 of the grinding mechanism 600 is disposed on the X-axis feed mechanism 400, so that the first grinding head 640 can move in the X direction, the Y direction, the Z direction and rotate around the Y axis and the Z axis, and the first grinding head 640 has five degrees of freedom in space, so that the compound grinding machine can grind workpieces of different sizes and shapes, and the range of processed products is expanded.

For convenience of explanation, referring to fig. 1, the front surface of the bed 100 is an operating station, a direction of the operating station toward the bed 100 is the front surface, a direction parallel to the front surface is denoted as a Z-axis, and the Z-axis is directed to the right side of the operating station; the direction which is vertical to the Z axis and in the same plane is an X axis, and the X axis points to the operation station in the positive direction; the Y axis is vertical to a plane formed by the X axis and the Z axis and is inclined upwards towards the operator; the C axis is a shaft rotating around the Z axis. The upper and lower sides, front and rear sides, and left and right sides are described with reference to fig. 1.

In one embodiment, the Z-axis feed mechanism 300 includes: a Z-axis guide rail 310, a Z-axis feeding base 320, a Z-axis ball screw 330 and a Z-axis feeding motor (not shown).

The Z-axis guide rails 310 are fixedly arranged on the lathe bed 100 in pairs, the Z-axis feeding base 320 is connected to the Z-axis guide rails 310 in a sliding mode, the bottom end of the Z-axis feeding base is in transmission connection with a Z-axis ball screw 330, the Z-axis ball screw 330 is in transmission connection with a Z-axis feeding motor, and the Z-axis feeding motor is arranged on the lathe bed 100; the X-axis feed mechanism 400 is provided on the Z-axis feed base 320.

When the Z-axis feeding motor works, the Z-axis ball screw 330 is driven to rotate, and the structure of the screw pair drives the Z-axis feeding base 320 to slide along the Z direction, so that the X-axis feeding mechanism 400 and other components on the X-axis feeding mechanism 400 slide in the Z direction integrally.

The X-axis feeding mechanism 400 is integrally mounted on the Z-axis feeding base 320, and includes an X-axis guide 410 perpendicular to the Z-axis guide 310, an X-axis feeding base (not shown), an X-axis ball screw (not shown), and an X-axis feeding motor (not shown). The X-axis guide rails 410 are connected to the top surface of the Z-axis feeding base 320 in pairs through a transition connecting plate or the like, the X-axis feeding base is connected to the X-axis guide rails in a sliding mode, the bottom end of the X-axis feeding base is in transmission connection with the X-axis ball screw, the X-axis ball screw is in transmission connection with an X-axis feeding motor, and the X-axis feeding motor is installed on the Z-axis feeding base 320; the grinding mechanism 600 is disposed on the X-axis feed block.

When the X-axis feeding motor works, the X-axis ball screw is driven to rotate, and the structure of the screw pair drives the X-axis feeding seat to slide along the X direction, so that the grinding mechanism 600 can slide upwards in the X direction integrally.

The above embodiments give specific examples of the Z-axis feed mechanism 300 and the X-axis feed mechanism 400. For the compound grinding machine, the compound grinding machine may further include a C-axis rotating mechanism 200, and the C-axis rotating mechanism 200 is used for holding and driving the disc-shaped, circular-ring-shaped or rod-shaped parts to rotate.

The C-axis rotating mechanism 200 is arranged along the Z-axis direction and is located at the left end of the bed 100; the C-axis rotating mechanism 200 includes a servo electric spindle 210, a hydraulic rotary cylinder 220, and a three-jaw chuck 230; the hydraulic rotary cylinder 220 is disposed on the servo electric spindle 210, and the three-jaw chuck 230 is disposed at a working end of the hydraulic rotary cylinder 220.

The servo electric spindle 210 can be an alternating current asynchronous servo electric spindle, has the functions of rotation, indexing, accurate stop and the like under the control of a numerical control system, can realize the position control and the speed control of a workpiece, and is clamped by a hydraulic rotary cylinder 220 to drive a three-jaw chuck 230 to realize the clamping of the workpiece; if special workpieces are encountered, the three-jaw chuck 230 can be replaced by a sleeve or other clamping modes.

In an alternative embodiment, the C-axis rotating mechanism 200 is movably disposed at the left end of the bed 100, that is, the C-axis rotating mechanism 200 can rotate with a certain small angle using the X-axis as the rotation center, so that the compound grinding machine has six degrees of freedom in space, which is similar to a flexible processing system, and the processing range of the compound grinding machine is greatly expanded.

In a specific implementation scene, a high-power rotating motor is fixed at the left end of the bed body 100, a reduction mechanism is arranged at the working end of the rotating motor, an index plate is arranged at the working end of the reduction mechanism, and the C-axis rotating mechanism 200 is integrally arranged on the index plate, so that the function of angular rotation with a certain small amplitude by taking the X axis as a rotation center can be realized, and the processing range of the composite grinding machine is further widened. Furthermore, the C-axis rotating mechanism 200 may have two processing stations, when one processing station is used for processing, the other processing station is used for clamping the part, and after the part at the processing station is processed, the two processing stations are interchanged, so that the time for clamping the workpiece can be greatly saved, and the processing efficiency can be improved to a certain extent.

In one implementation scenario, a retractable shield 700 is slidably disposed over both the Z-axis guide rail 310 and the X-axis guide rail 410 to protect themselves and to shield dust.

The structure of the compound grinding machine is schematically described above, and the operation principle thereof is further described below.

Taking the workpiece 800 to be ground shown in fig. 8 and 9 as an example, the notch 850 and the chamfer 860 of the workpiece are required to be ground, and the workpiece is clamped by the C-axis rotating mechanism 200 fixed to the bed 100. According to the grinding process requirement, referring to fig. 1, the rotating frame 620 adjusts the rotation angle with the Y-axis as the rotation center, the first motor 630 adjusts the rotation angle with the virtual Z-axis perpendicular to the Y-axis as the rotation center, and at the same time, the position is adjusted in the Y-axis direction by means of the elevating plate 661, so that the posture of the first grinding head 640 can adaptively process the workpiece 800 to be ground. Thereafter, the first grinding head 640 is rotated by the first motor 630 and fed toward the workpiece by the Z-axis feed mechanism 300 and the X-axis feed mechanism 400 to grind the workpiece.

When the notch 850 is ground, a grinding wheel with a circular truncated cone structure matched with the width of the notch 850 can be mounted on the first grinding head 640, the axis of the first motor 630 is parallel to the Y axis, a workpiece 800 to be ground is clamped by the C axis rotating mechanism 200 and then fixed, then the first motor 630 is started to drive the first grinding head 640 to rotate at a high speed, the Z axis feeding mechanism 300 and the X axis feeding mechanism 400 are sequentially controlled by the numerical control system to drive the first grinding head 640 to feed towards the workpiece according to a set feeding route, and the grinding of the notch 850 is gradually completed; after one notch 850 is machined, the first grinding head 640 is retreated, the C-axis rotating mechanism 200 rotates by 120 degrees to realize indexing and quasi-stop of the workpiece, another notch 850 is continuously ground and machined, and the process is repeated until the grinding machining of the three notches 850 is completed.

The first grinding head 640 can flexibly adjust the posture in 5 degrees of freedom in space by the aid of the rotating frame 620 and the first motor 630 in a bidirectional rotation manner and the assistance of the Z-axis feeding mechanism 300 and the X-axis feeding mechanism 400, so that grinding processing such as notch, chamfer and cambered surface can be performed on the workpiece, the special processing requirements of the workpiece are effectively met, the non-standard special-shaped workpiece can be ground, and the range of products processed by the composite grinding machine is enlarged.

The operation of machining the chamfer 860 is substantially the same as above and will not be described in detail here.

Example three:

referring to fig. 4 and 6, a final embodiment of the present invention discloses a compound grinding machine with a grinding head assembly 500, wherein the grinding head assembly 500 is provided with at least one set, and specifically comprises: the Z-axis feeding module 500', the second motor 530, and the second grinding head 540; wherein, the Z-axis feeding module 500 'is provided on the X-axis feeding mechanism 400, the second motor 530 is provided on the Z-axis feeding module 500', and the second grinding wheel 540 is provided at an output end of the second motor 530.

Referring to fig. 1 and 3, the embodiment shown in fig. 1 and 3 presents a schematic structural view of a compound grinding machine having three sets of grinding head assemblies 500, the grinding head assemblies 500 being located at the front end of an X-axis feed block or at the front side of a base plate 610, which is drivable along a Z-axis by a corresponding Z-axis feed module 500' to perform grinding work on a workpiece.

In this embodiment, three sets of grinding head assemblies 500 are arranged in parallel and have different grinding functions, each set of grinding head assembly 500 includes a Z-axis feeding module 500 ', a second motor 530 and a second grinding head 540, wherein the Z-axis feeding module 500' includes a slide table 510, a slide table 520 slidably disposed on the slide table 510, and a corresponding feeding motor, the slide table 510 is mounted at a front end of the X-axis feeding table or at a front side of the bottom plate 610, the feeding motor is fixedly mounted on a right side surface of the slide table 510, an output end of the feeding motor is connected with the slide table 520 for pushing the slide table 520 to slide along the slide table 510, and the second motor 530 is fixedly mounted at a top end of the slide table 520, and an output end of the second motor is connected with the second grinding; the feeding motor and the second motor 530 are respectively electrically connected with the numerical control system. That is, the second grinding wheel head 540 is driven to rotate at a high speed by the second motor 530 and is driven by the feed motor to feed toward the workpiece clamped by the C-axis rotating mechanism 200, thereby performing grinding of the workpiece.

In a specific implementation scenario, the second grinding head 540 is a specially-made electric grinding head, which can be replaced according to specific processing requirements of the workpiece, and may be a grinding wheel with different sizes and shapes or other processing tools. One structure of the second grinding head 540 is shown in fig. 7, and includes a turret 541, and a first grinding wheel 542 and a second grinding wheel 543 fixedly connected to the turret 541 in sequence, where the turret 541 is connected to an output end of the second motor 530, the first grinding wheel 542 is in a circular truncated cone structure, and the second grinding wheel 543 is in a truncated cone structure.

The working principle of the grinding head assembly 500 is as follows:

also taking the workpiece 800 to be ground shown in fig. 8 and 9 as an example, the workpiece is generally similar to a circular ring-shaped part, and the inner circle 810, the outer circle 820, the step 830 and the inner bevel 840 of the workpiece all need to be ground. According to the grinding processing requirements, after the corresponding second grinding head 540 is replaced and the workpiece 800 to be ground is clamped on the C-axis rotating mechanism 200, the Z-axis feeding mechanism 300 drives the X-axis feeding mechanism 400 to feed left and right along the Z axis, the X-axis feeding mechanism 400 drives the grinding head assembly 500 to feed back and forth along the X axis, the feeding motor drives the grinding head assembly 500 to feed left and right along the Z axis, the second grinding head 540 is driven to feed towards the workpiece 800 to be ground, and the second grinding head 540 is in line contact with the workpiece 800 to be ground, so that the workpiece is ground. The first grinding wheel 542 and the second grinding wheel 543 of the second grinding head 540 shown in fig. 7 can grind the inner circle 810 and the inner inclined plane 840 of the workpiece 800 to be ground, and the outer circle 820 and the step 830 can finish grinding through the corresponding second grinding head 540. The grinding head assembly 500 is driven by the two feeding shafts and the corresponding feeding motors to feed towards the workpiece step by step, so that the workpiece clamped once is processed by a plurality of grinding procedures such as inner circle, outer circle, step and inclined plane, equipment does not need to be replaced, the processing precision of the workpiece is guaranteed, the efficiency is high, and the grinding head assembly has the functions of grinding the inner circle, the outer circle, the step and the inclined plane and is low in cost. In addition, the size of the second grinding wheels 540 can be adjusted according to the size of the workpiece, and if one of them is mounted with a large grinding wheel, the other second grinding wheels 540 are restricted or interfere with the other second grinding wheels 540 during the machining process, and then the interfering second grinding wheels 540 can be moved backwards by the feeding motor to remove the restriction or interference, thereby improving the grinding efficiency.

By the aid of the composite grinding machine, machining of procedures such as inner circles, outer circles, steps, inclined planes and notches can be completed on the clamped ring parts at one time, machining precision of workpieces to be ground is guaranteed, and machining efficiency is remarkably improved.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. A grinding mechanism having predetermined X, Y and Z directions, the grinding mechanism comprising:

a base plate slidable along the X direction;

the first grinding head is arranged at the output end of the first motor.

2. The grinding mechanism of claim 1, wherein:

3. The grinding mechanism of claim 1, wherein:

the grinding mechanism also comprises a lifting plate;

the lifter plate slide set up in the swivel mount, first motor use the Z is to rotating as the direction of rotation center line set up in the lifter plate.

4. The grinding mechanism of claim 2, wherein:

the grinding mechanism also comprises a lifting plate;

5. The grinding mechanism of claim 4, wherein:

6. A grinding mechanism according to any of claims 2, 4 or 5, wherein the first and/or second turntable is an indexing disc.

7. A compound grinding machine, comprising:

the grinding machine comprises a machine body, a Z-axis feeding mechanism, an X-axis feeding mechanism and the grinding mechanism of any one of claims 1-6;

8. The compound grinding machine as defined in claim 7, wherein:

the Z-axis guide rails are fixedly arranged on the lathe bed in pairs, the Z-axis feeding base is connected to the Z-axis guide rails in a sliding mode, the bottom end of the Z-axis feeding base is in transmission connection with the Z-axis ball screw, and the Z-axis ball screw is in transmission connection with the Z-axis feeding motor;

the X-axis feeding mechanism is arranged on the Z-axis feeding seat.

9. The compound grinding machine as defined in claim 8, wherein:

the X-axis guide rails are fixedly arranged on the Z-axis feeding base in pairs, the X-axis feeding base is connected to the X-axis guide rails in a sliding mode, the bottom end of the X-axis feeding base is in transmission connection with the X-axis ball screw, and the X-axis ball screw is in transmission connection with the X-axis feeding motor;

the grinding mechanism is arranged on the X-axis feeding seat.

10. The compound grinding machine as defined in claim 7, wherein:

the compound grinding machine also comprises a C-axis rotating mechanism;

11. The compound grinding machine as defined in claim 7, wherein:

12. The compound grinding machine as defined in claim 11, wherein: