CN214162323U - Numerical control double-end inner and outer circle composite grinding machine - Google Patents

Abstract

The utility model relates to the technical field of grinding machine equipment, in particular to a numerical control double-head inner and outer circle composite grinding machine, which comprises a machine body, wherein an inner circle sanding mechanism, an outer circle sanding mechanism, a workpiece with a step hole, a headstock and a tip are arranged on the upper surface of the machine body, and the workpiece comprises a big hole end and a small hole end; the inner circle sanding mechanism is provided with a first inner circle grinding wheel for grinding the small hole end and a second inner circle grinding wheel for grinding the large hole end; the outer circle sanding mechanism is provided with an outer circle grinding wheel; the cylindrical grinding wheel is used for grinding the outer circle of the workpiece; the center is detachably connected with one end of the workpiece; the workpiece, the first inner circle grinding wheel and the second inner circle grinding wheel can rotate in the headstock. The utility model has the advantages that on one hand, the processing efficiency can be improved by combining the internal grinding machine and the external grinding machine into a composite structure; on the other hand, two inner circle grinding wheels are arranged to grind the big hole end and the small hole end of the stepped hole workpiece respectively, and the large hole end and the small hole end are formed in one step, so that the coaxiality of the big hole end and the small hole end is improved, and the machining precision of the workpiece is improved.

Description

Numerical control double-end inner and outer circle composite grinding machine

Technical Field

The utility model relates to a grinding machine equipment technical field, concretely relates to circular grinding machine in numerical control double-end.

Background

A grinding machine is a machine tool that grinds the surface of a workpiece using a grinding tool. Most grinding machines perform grinding using a grinding wheel rotating at high speed, and a few grinding machines perform grinding using a free abrasive and other grindstones such as oilstone and abrasive belt.

In the prior art, grinding machines are single-grinding-head grinding machines, when a workpiece with a step hole is machined, a workpiece clamp is used for clamping the workpiece, one end of the workpiece corresponds to a grinding wheel, after one end of the workpiece is machined by the grinding wheel, the workpiece is taken down and horizontally turned for 180 degrees, then clamping is carried out again, and a grinding head is replaced, so that the other end of the workpiece can be machined; and when the excircle grinding is carried out on the workpiece, the workpiece needs to be taken down from the inner grinding machine to be clamped on the outer grinding machine. The processing mode can be completed by clamping for many times, the operation is complex, the labor intensity is high, the processing efficiency is influenced, and the large hole end and the small hole end of the stepped hole of the workpiece are difficult to ensure to have the same axial degree, so that the processing precision of the workpiece is greatly influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that manual operation is complicated, work piece machining precision is low, the utility model provides a technical scheme does:

the utility model provides a numerical control double-head internal and external circle composite grinding machine, which comprises a machine body, wherein an internal circle sanding mechanism, an external circle sanding mechanism, a workpiece with a step hole, a headstock and a top are arranged on the upper surface of the machine body; the workpiece comprises a large hole end and a small hole end; the inner circle sanding mechanism is provided with a first inner circle grinding wheel for grinding the small hole end and a second inner circle grinding wheel for grinding the large hole end; the outer circle sanding mechanism is provided with an outer circle grinding wheel; the outer circle grinding wheel is used for grinding the outer circle of the workpiece; the center is detachably connected with one end of the workpiece; the workpiece, the first internal grinding wheel and the second internal grinding wheel can rotate in the headstock.

Further, the inner circle sanding mechanism further comprises a sliding assembly, a first sanding assembly and a second sanding assembly; the sliding assembly is fixedly arranged on the upper surface of the lathe bed; the first sanding assembly and the second sanding assembly are disposed above the sliding assembly; the first sanding assembly and the second sanding assembly are arranged side by side; the sliding assembly can drive the first sanding assembly and the second sanding assembly to slide; the first inner circle grinding wheel is arranged on the first sanding component; the first sanding component can drive the first inner circle grinding wheel to rotate; the second inner circle grinding wheel is arranged on the second sanding component; the second sanding component can drive the second internal grinding wheel to rotate.

Further, the sliding assembly comprises a first longitudinal guide rail seat, a first longitudinal sliding table, a first ball screw and a first servo motor; the first longitudinal guide rail seat is fixedly arranged on the upper surface of the lathe bed; the first ball screw is arranged between the two guide rails of the first longitudinal guide rail seat; the first ball screw is parallel to the two guide rails of the first longitudinal guide rail seat and is arranged between the two guide rails of the first longitudinal guide rail seat; one end of the first ball screw is in transmission connection with the output end of the first servo motor; the first longitudinal sliding table is arranged on the first longitudinal guide rail seat; the middle part of the first longitudinal sliding table is fixedly connected with a nut of the first ball screw.

Further, the first sanding assembly comprises a first transverse feeding sliding table, a first rotating shaft and a second servo motor for controlling the first transverse feeding sliding table to slide; the first transverse feeding sliding table is arranged on the upper surface of the first longitudinal sliding table in a sliding mode; the sliding direction of the first transverse feeding sliding table is perpendicular to the extending direction of the first longitudinal guide rail seat; the output end of the second servo motor is in transmission connection with the first transverse feeding sliding table; one end of the first rotating shaft is rotatably arranged on the side surface of the first transverse feeding sliding table; the first inner circle grinding wheel is arranged at the other end of the first rotating shaft.

Further, the second sanding assembly comprises a second transverse feeding sliding table, a second rotating shaft and a third servo motor for controlling the second transverse feeding sliding table to slide; the second transverse feeding sliding table is arranged on the upper surface of the first longitudinal sliding table in a sliding mode; the sliding direction of the second transverse feeding sliding table is perpendicular to the extending direction of the first longitudinal guide rail seat; the output end of the third servo motor is in transmission connection with the second transverse feeding sliding table; one end of the second rotating shaft is rotatably arranged on the side surface of the second transverse feeding sliding table; the second inner circle grinding wheel is arranged at the other end of the second rotating shaft; the second rotating shaft is parallel to the first rotating shaft.

Furthermore, the outer circle sanding mechanism further comprises a second longitudinal guide rail seat, a second longitudinal sliding table, a fourth servo motor, a second ball screw and an electric shaft; the second longitudinal guide rail seat is arranged on the upper surface of the lathe bed; the second ball screw is arranged between the two rails of the second longitudinal guide rail seat; the second ball screw is parallel to the two rails of the second longitudinal guide rail seat and is arranged between the two rails of the second longitudinal guide rail seat; one end of the second ball screw is in transmission connection with the output end of the fourth servo motor; the second longitudinal sliding table is arranged on the second longitudinal guide rail seat; the middle part of the second longitudinal sliding table is fixedly connected with a nut of the second ball screw; the electric shaft is rotatably and transversely arranged in the second longitudinal sliding table in a penetrating manner; the outer circle grinding wheel is longitudinally and rotatably arranged on the left end face of the second longitudinal sliding table and is connected with one end of the electric shaft.

Further, the center is arranged on the upper surface of the machine body in a transversely sliding manner; one end of the workpiece is coaxially, detachably and fixedly connected with the center.

Furthermore, a rotatable hollow shaft is arranged in the headstock box; a clamp for clamping the workpiece is arranged in the hollow shaft; the hollow shaft can drive the workpiece to rotate through the clamp.

The utility model has the advantages of or beneficial effect:

the utility model provides a numerical control double-end inner and outer circle composite grinding machine, which comprises a machine body, wherein an inner circle sanding mechanism, an outer circle sanding mechanism, a workpiece with a step hole, a headstock box for fixing the workpiece and a top are arranged on the upper surface of the machine body; the workpiece comprises a large hole end and a small hole end; the inner circle sanding mechanism is provided with a first inner circle grinding wheel for grinding the small hole end and a second inner circle grinding wheel for grinding the large hole end; the outer circle sanding mechanism is provided with an outer circle grinding wheel; the outer circle grinding wheel is used for grinding the outer circle of the workpiece; the center is detachably connected with one end of the workpiece; the workpiece, the first internal grinding wheel and the second internal grinding wheel can rotate in the headstock. The utility model has the advantages that on one hand, the inner grinding machine and the outer grinding machine are combined into a composite structure, so that the cost of the device is saved, and the step hole and the excircle of the workpiece can be simultaneously processed, thereby improving the processing efficiency; on the other hand, the two inner circle grinding wheels are arranged to grind the big hole end and the small hole end of the stepped hole workpiece respectively, and the large hole end and the small hole end are formed in one step, so that the coaxiality of the big hole end and the small hole end is improved, and the machining precision of the workpiece is improved.

Drawings

The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not intended to be drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic top view of a numerically controlled double-headed internal and external composite grinding machine according to a new practical embodiment 1;

fig. 2 is a schematic structural diagram of a workpiece machined in the numerical control double-ended internal and external composite grinding machine provided in the new practical embodiment 1.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

As the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientation or positional relationship is based on that shown in the drawings, merely for convenience in describing the invention and simplifying the description, and does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

The appearances of the terms first, second, and third, if any, are used for descriptive purposes only and are not intended to be limiting or imply relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

In the prior art, when a workpiece with a stepped hole is machined, the workpiece needs to be clamped for many times, and the grinding work can be completed only by changing angles.

In order to solve the above technical problem, a numerical control double-ended internal and external circular composite grinding machine 01 provided in this embodiment 1 includes, as shown in fig. 1, a machine body 1, where an inner circular sanding mechanism 2, an outer circular sanding mechanism 3, a workpiece 4 with a stepped hole, a headstock 5 for fixing the workpiece, and a tip 6 are disposed on an upper surface of the machine body 1, and the workpiece 4 includes a large hole end 41 and a small hole end 42; the internal grinding mechanism 2 is provided with a first internal grinding wheel 21 for grinding the small-hole end 42 and a second internal grinding wheel 22 for grinding the large-hole end 41; the outer circle sanding mechanism 3 is provided with an outer circle grinding wheel 30; the external grinding wheel 30 is used for grinding the external circle of the workpiece 4; the centre 6 is detachably connected with one end of the workpiece 4; the workpiece 4, the first inner grinding wheel 21, and the second inner grinding wheel 22 are rotatable in the headstock 5. In the embodiment 1, on one hand, the internal grinding machine and the external grinding machine are combined into the composite structure, so that compared with the technical scheme that the internal grinding machine and the external grinding machine are used for grinding respectively, the device and labor cost is saved, and the step hole and the external circle of the workpiece 4 can be processed simultaneously, so that the processing efficiency is improved; on the other hand, the first inner grinding wheel 21 and the second inner grinding wheel 22 are arranged to grind the large hole end 41 and the small hole end 42 of the stepped hole workpiece 4 respectively, and the large hole end 41 and the small hole end 42 can be formed in one step, so that the coaxiality of the large hole end 41 and the small hole end 42 can be improved, and the machining precision of the workpiece 4 can be improved on the whole.

In order to facilitate the respective machining of the large hole end 41 and the small hole end 42 of the stepped hole of the workpiece 4, in the numerically-controlled double-ended internal and external circular composite grinding machine 01 provided in this embodiment 1, as shown in fig. 1, the internal circular grinding mechanism 2 further includes a sliding assembly 23, a first grinding assembly 24, and a second grinding assembly 25; the sliding assembly 23 is fixedly arranged on the upper surface of the bed body 1; the first sanding assembly 24 and the second sanding assembly 25 are disposed above the sliding assembly 23; the first sanding assembly 24 and the second sanding assembly 25 are arranged side by side; the sliding assembly 23 can slide the first sanding assembly 24 and the second sanding assembly 25; the first internal grinding wheel 21 is arranged on the first sanding assembly 24; the first sanding assembly 24 can drive the first internal grinding wheel 21 to rotate; the second internal grinding wheel 22 is arranged on the second sanding assembly 25; the second sanding assembly 25 may drive the second internal grinding wheel 22 in rotation. In the embodiment 1, by providing the sliding assembly 23, the sliding assembly 23 can slide in the direction of the X1 axis under the electric control, so that the first sanding assembly 24 is located at the feed position, even if the axis of the first inner grinding wheel 21 is aligned with the axis of the small hole end 42 of the workpiece 4, then the first sanding assembly 24 approaches to the workpiece 4 along the direction of the W1 axis, the first inner grinding wheel 21 is driven under the electric control to grind the small hole end 42, after the grinding of the small hole end 42 is finished, the first sanding assembly further moves away from the workpiece 4 along the direction of the W1 axis, the sliding assembly 23 further slides along the direction of the X1 axis, so that the second sanding assembly 25 is located at the feed position, then the second sanding assembly 25 approaches to the workpiece 4 along the direction of the W2 axis, and the second inner grinding wheel 22 is driven under the electric control to grind the large hole end 41, that is, namely, the function of respectively processing the large hole end 41 and the small hole end 42 is realized.

In order to facilitate the alternate operation of the first internal grinding wheel 21 and the second internal grinding wheel 22, in the numerically-controlled double-ended internal and external composite grinding machine 01 provided in this embodiment 1, as shown in fig. 1, the sliding assembly 23 includes a first longitudinal guide rail seat 231, a first longitudinal sliding table 232, a first ball screw, and a first servo motor 233; the first longitudinal guide rail seat 231 is fixedly arranged on the upper surface of the lathe bed 1; the first ball screw is arranged between the two guide rails of the first longitudinal guide rail seat 231; the first ball screw is parallel to the two guide rails of the first longitudinal guide rail seat 231 and is arranged between the two guide rails of the first longitudinal guide rail seat 231; one end of the first ball screw is in transmission connection with the output end of the first servo motor 233; the first longitudinal sliding table 232 is arranged on the first longitudinal guide rail seat 231; the middle portion of the first longitudinal sliding table 232 is fixedly connected with a nut of the first ball screw. In this embodiment 1, the first servo motor 233 provides power, and rotates along with the output end of the first servo motor 233 to drive the first ball screw to rotate. Because the first longitudinal sliding table 232 is slidably disposed on the two guide rails of the first longitudinal guide rail seat 231 and fixed with the nut of the first ball screw, the first ball screw can drive the first longitudinal sliding table 232 to make linear motion along the X1 axis direction and drive the first inner grinding wheel and the second inner grinding wheel to move in the X1 axis direction, after the second inner grinding wheel 22 finishes working, the second inner grinding wheel 22 retreats from cutting, the first inner grinding wheel 21 feeds under the electric control, and the function of the alternate working of the first inner grinding wheel 21 and the second inner grinding wheel 22 can be realized.

In order to provide a sanding assembly suitable for grinding the small hole end 42 of the workpiece 4, in the numerically controlled double-ended internal and external circular compound grinding machine 01 provided in this embodiment 1, as shown in fig. 1, the first sanding assembly 24 includes a first transverse feed slide table 241, a first rotating shaft 242, and a second servo motor 243 for controlling the sliding of the first transverse feed slide table 241; the first transverse feeding sliding table 241 is slidably arranged on the upper surface of the first longitudinal sliding table 232; the sliding direction of the first transverse feeding sliding table 241 is perpendicular to the extending direction of the first longitudinal guide rail seat 231; the output end of the second servo motor 243 is in transmission connection with the first transverse feeding sliding table 241; one end of the first rotating shaft 242 is rotatably provided to a side surface of the first lateral feed slide table 241; the first inner grinding wheel 21 is provided on the other end of the first rotating shaft 242. In this embodiment 1, the second servo motor 243 is used as a power source to drive the first transverse feeding sliding table 241 to move on the first longitudinal sliding table 232 along the direction of the W1 axis and approach the workpiece 4, the first rotating shaft 242 drives the first inner grinding wheel 21 to rotate under the electric control, and the first inner grinding wheel 21 can grind the small hole end 42 of the workpiece 4.

In order to provide a sanding assembly suitable for grinding the large-hole end 41 of the workpiece 4, in the numerical control double-head inner-outer-circle compound grinding machine 01 provided in this embodiment 1, as shown in fig. 1, the second sanding assembly 25 includes a second transverse feeding sliding table 251, a second rotating shaft 252, and a third servo motor 253 for controlling the sliding of the second transverse feeding sliding table 251; the second transverse feeding sliding table 251 is slidably arranged on the upper surface of the first longitudinal sliding table 232; the sliding direction of the second transverse feeding sliding table 251 is perpendicular to the extending direction of the first longitudinal rail seat 231; the output end of the third servo motor 253 is in transmission connection with the second transverse feeding sliding table 251; one end of the second rotating shaft 252 is rotatably disposed on the side surface of the second transverse feeding sliding table 251; the second internal grinding wheel 22 is disposed on the other end of the second rotating shaft 252; the second rotation shaft 252 is parallel to the first rotation shaft 242. In this embodiment 1, the third servo motor 253 is used as power to drive the second transverse feeding sliding table 251 to slide on the first longitudinal sliding table 232 along the direction of the W2 axis and approach the workpiece 4, the second rotating shaft 252 drives the second inner circular grinding wheel 22 to rotate under the electric control, and the second inner circular grinding wheel 22 can grind the large hole end 41 of the workpiece 4. In addition, the first electric shaft 34 and the second electric shaft 34 are arranged in parallel, so that the step holes of the workpiece 4 are uniform in thickness, the large hole end 41 and the small hole end 42 have the same axial degree, and the machining precision of the workpiece 4 is improved.

In order to provide an outer circle grinding mechanism suitable for grinding the outer circle of a workpiece 4, in the numerical control double-ended inner and outer circle compound grinding machine 01 provided in this embodiment 1, as shown in fig. 1, the outer circle grinding mechanism 3 further includes a second longitudinal guide rail seat 31, a second longitudinal sliding table 32, a fourth servo motor 33, a second ball screw and an electric shaft 34; the second longitudinal guide rail seat 31 is arranged on the upper surface of the lathe bed 1; the second ball screw is arranged between the two rails of the second longitudinal rail seat 31; the second ball screw is parallel to the two rails of the second longitudinal rail seat 31 and is arranged between the two rails of the second longitudinal rail seat 31; one end of the second ball screw is in transmission connection with the output end of the fourth servo motor 33; the second longitudinal sliding table 32 is slidably arranged on the second longitudinal guide rail seat 31; the middle part of the second longitudinal sliding table 32 is fixedly connected with a nut of a second ball screw; the electric shaft 34 is rotatably and transversely arranged inside the second longitudinal sliding table 32 in a penetrating way; the outer grinding wheel 30 is rotatably disposed on a left end surface of the second longitudinal sliding table 32 in the longitudinal direction, and is connected to one end of the electric shaft 34. In this embodiment 1, fourth servo motor 33 is as the power supply, rotate along with fourth servo motor 33's output, it is rotatory to drive the second ball screw, because second longitudinal sliding table 32 slidable sets up on two guide rails of second longitudinal guide rail seat 31, and it is fixed with the nut of second ball screw, first ball screw can drive first longitudinal sliding table 232 and be linear motion along X2 axle direction, when the excircle contact of excircle emery wheel 30 and work piece 4, second longitudinal sliding table 32 stop motion, then electronic axle 34 rotates under automatically controlled, it rotates in the direction of X2 axle to drive excircle emery wheel 30, grind the excircle of work piece 4.

In order to facilitate adjustment of the machining position of the workpiece 4, in the numerically controlled double-ended internal and external circular composite grinding machine 01 provided in this embodiment 1, as shown in fig. 1, a tip 6 is transversely slidably disposed on the upper surface of the machine body 1; one end of the workpiece 4 is coaxially, detachably and fixedly connected with the tip 6. In this embodiment 1, the center 6 can slide along the Z-axis direction under the electric control, and the center 6 can drive the workpiece 4 to perform adaptive position adjustment on the Z-axis, so that the outer circle grinding wheel 30, the first inner circle grinding wheel 21 and the second inner circle grinding wheel 22 can all grind the corresponding positions, thereby realizing the adjustability of the processing position of the workpiece 4 and increasing the flexibility of the numerical control double-head inner and outer circle compound grinding machine 01.

In order to grind the workpiece 4 uniformly, in the numerical control double-ended internal and external composite grinding machine 01 provided in this embodiment 1, as shown in fig. 1, a rotatable hollow shaft 51 is provided in a headstock 5; a clamp for clamping the workpiece 4 is arranged in the hollow shaft 51, and the hollow shaft 51 can drive the workpiece 4 to rotate through the clamp. Through this setting, this embodiment 1 is in the processing, and the anchor clamps drive 4 self gyration of work piece under automatically controlled in the time of work piece 4 to opposite with the rotation direction of outer circle emery wheel 30, first interior circle emery wheel 21 and second interior circle emery wheel 22, thereby guarantee the homogeneity of work piece 4 processing back hole and excircle, improve the machining precision.

The working principle of the numerical control double-head inner and outer circle compound grinding machine 01 provided by the embodiment 1 is as follows:

in the process of processing the excircle of the workpiece 4, the two ends of the workpiece 4 are respectively installed on the center 6 and the headstock 5, the two ends of the workpiece 4 are fixed, the center 6 can properly adjust the position of the workpiece 4 on the Z axis according to the position of the workpiece 4 to be processed, and the fourth servo motor 33 serves as a power source and rotates along with the output end of the fourth servo motor 33 to drive the second ball screw to rotate. Because the second longitudinal sliding table 32 is slidably disposed on the two guide rails of the second longitudinal guide rail seat 31 and fixed with the nut of the second ball screw, the first ball screw can drive the first longitudinal sliding table 232 to make linear motion along the X2 axis direction and approach the workpiece 4, when the external grinding wheel 30 contacts with the external circle of the workpiece 4, the second longitudinal sliding table 32 stops moving, then the electric shaft 34 rotates under electric control, the external grinding wheel 30 is driven to rotate in the X2 axis direction, the workpiece 4 is driven to rotate under the clamping of the clamp by the electric control, and the rotation direction of the external grinding wheel 30 is opposite, so as to grind the external circle of the workpiece 4, after the external grinding is finished, the second longitudinal sliding table 32 moves upwards along the X2 axis direction again, and drives the external grinding wheel 30 to keep away from the workpiece 4.

Then, a step hole is processed, the center 6 drives the workpiece 4 to approach the inner circle sanding mechanism 2 along the Z-axis, the workpiece 4 is extended into the hollow shaft of the headstock 5, the fixture clamps the workpiece 4, the first servo motor 233 provides power, the first ball screw is driven to rotate along with the rotation of the output end of the first servo motor 233, the first longitudinal sliding table 232 is slidably arranged on the two guide rails of the first longitudinal guide rail seat 231 and is fixed with the nut of the first ball screw, the first ball screw can drive the first longitudinal sliding table 232 to do linear motion along the X1 axis direction, the axis of the second inner circle grinding wheel 22 is firstly aligned with the axis of the big hole end 41 of the workpiece 4, namely, the second inner circle grinding wheel 22 is in the feed position, then the second transverse feed sliding table 251 is driven by the third servo motor 253 to move along the W2 axis direction and approach the workpiece 4, so that the second inner circle grinding wheel 22 is extended into the big hole end 41, the second internal grinding wheel 22 is driven by the second rotating shaft 252 to grind the large hole end 41, and after the grinding of the large hole end 41 is finished, the second transverse feeding sliding table 251 moves along the direction of the W2 shaft again to drive the second internal grinding wheel 22 to be far away from the workpiece 4; then the first longitudinal sliding table 232 slides along the X1 axis direction again, so that the first internal grinding wheel 21 is located at a cutting feed position, the first transverse feeding sliding table 241 moves along the W1 axis direction under the driving of the second servo motor 243, so that the first internal grinding wheel 21 extends into the small hole end 42, the first internal grinding wheel 21 grinds the small hole end 42 under the driving of the first rotating shaft 242, after the grinding is finished, the first transverse feeding sliding table 241 moves along the W1 axis direction again, so as to drive the first internal grinding wheel 21 to retreat, furthermore, no matter when the large hole end 41 or the small hole end 42 is ground, the workpiece 4 rotates by itself under the driving of the clamp, and is opposite to the rotating direction of the first internal grinding wheel 21 and the second internal grinding wheel 22, finally, the workpiece 4 is driven by the center 6 to slide away from the internal grinding mechanism 22 along the Z axis direction, so as to retreat from the clamp, so that the workpiece 4 is loosened, the workpiece 4 is taken out.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (8)

1. A numerical control double-head internal and external circle composite grinding machine is characterized by comprising a machine body, wherein an internal circle sanding mechanism, an external circle sanding mechanism, a workpiece with a step hole, a headstock used for fixing the workpiece and a tip are arranged on the upper surface of the machine body;

the workpiece comprises a large hole end and a small hole end; the inner circle sanding mechanism is provided with a first inner circle grinding wheel for grinding the small hole end and a second inner circle grinding wheel for grinding the large hole end; the outer circle sanding mechanism is provided with an outer circle grinding wheel; the outer circle grinding wheel is used for grinding the outer circle of the workpiece; the center is detachably connected with one end of the workpiece; the workpiece, the first internal grinding wheel and the second internal grinding wheel can rotate in the headstock.

2. The numerically controlled double-ended internal and external composite grinding machine according to claim 1, wherein the internal grinding mechanism further comprises a sliding assembly, a first grinding assembly and a second grinding assembly;

the sliding assembly is arranged on the upper surface of the lathe bed; the first sanding assembly and the second sanding assembly are disposed above the sliding assembly; the first sanding assembly and the second sanding assembly are arranged side by side; the sliding assembly can drive the first sanding assembly and the second sanding assembly to slide;

the first inner circle grinding wheel is arranged on the first sanding component; the first sanding component can drive the first inner circle grinding wheel to rotate; the second inner circle grinding wheel is arranged on the second sanding component; the second sanding component can drive the second internal grinding wheel to rotate.

3. The numerically controlled double-ended internal and external circular composite grinding machine according to claim 2, wherein said slide assembly includes a first longitudinal guide rail seat, a first longitudinal slide table, a first ball screw, and a first servo motor;

the first longitudinal guide rail seat is fixedly arranged on the upper surface of the lathe bed;

the first ball screw is arranged between the two guide rails of the first longitudinal guide rail seat; the first ball screw is parallel to the two guide rails of the first longitudinal guide rail seat and is arranged between the two guide rails of the first longitudinal guide rail seat; one end of the first ball screw is in transmission connection with the output end of the first servo motor;

the first longitudinal sliding table is arranged on the first longitudinal guide rail seat; the middle part of the first longitudinal sliding table is fixedly connected with a nut of the first ball screw.

4. The numerically controlled double-headed internal and external circular composite grinding machine according to claim 3, wherein the first sanding assembly includes a first lateral feed slide, a first rotating shaft, and a second servo motor that controls the first lateral feed slide to slide;

the first transverse feeding sliding table is arranged on the upper surface of the first longitudinal sliding table in a sliding mode; the sliding direction of the first transverse feeding sliding table is perpendicular to the extending direction of the first longitudinal guide rail seat; the output end of the second servo motor is in transmission connection with the first transverse feeding sliding table; one end of the first rotating shaft is rotatably arranged on the side surface of the first transverse feeding sliding table; the first inner circle grinding wheel is arranged at the other end of the first rotating shaft.

5. The numerically controlled double-ended inner and outer circular composite grinding machine according to claim 4, wherein the second sanding assembly includes a second lateral feed slide, a second rotating shaft, and a third servo motor that controls the second lateral feed slide to slide;

the second transverse feeding sliding table is arranged on the upper surface of the first longitudinal sliding table in a sliding mode; the sliding direction of the second transverse feeding sliding table is perpendicular to the extending direction of the first longitudinal guide rail seat; the output end of the third servo motor is in transmission connection with the second transverse feeding sliding table; one end of the second rotating shaft is rotatably arranged on the side surface of the second transverse feeding sliding table; the second inner circle grinding wheel is arranged at the other end of the second rotating shaft;

the second rotating shaft is parallel to the first rotating shaft.

6. The numerical control double-ended inner and outer circle compound grinding machine according to claim 1, wherein the outer circle sanding mechanism further comprises a second longitudinal guide rail seat, a second longitudinal sliding table, a fourth servo motor, a second ball screw and an electric shaft;

the second longitudinal guide rail seat is arranged on the upper surface of the lathe bed;

the second ball screw is arranged between the two rails of the second longitudinal guide rail seat; the second ball screw is parallel to the two rails of the second longitudinal guide rail seat and is arranged between the two rails of the second longitudinal guide rail seat;

one end of the second ball screw is in transmission connection with the output end of the fourth servo motor; the second longitudinal sliding table is arranged on the second longitudinal guide rail seat; the middle part of the second longitudinal sliding table is fixedly connected with a nut of the second ball screw;

the electric shaft is rotatably and transversely arranged in the second longitudinal sliding table in a penetrating manner; the outer circle grinding wheel is longitudinally and rotatably arranged on the left end face of the second longitudinal sliding table and is connected with one end of the electric shaft.

7. The numerically controlled double-ended internal and external circular compound grinding machine according to claim 1, wherein said tip is laterally slidably disposed on an upper surface of said bed; one end of the workpiece is coaxially, detachably and fixedly connected with the tip.

8. The numerically controlled double-ended internal and external circular compound grinding machine according to claim 1, wherein a rotatable hollow shaft is provided in the headstock; a clamp for clamping the workpiece is arranged in the hollow shaft; the hollow shaft can drive the workpiece to rotate through the clamp.

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