Five-axis machining tool for teaching

Abstract

The utility model discloses a five-axis machine tool for teaching, which comprises a main body part and a clamping module, and the main body part is a three-axis milling machine; the clamping module comprises a rotary table, a machining platform and a clamp. The rotary table is mounted in a manner of rotating around a horizontal axis, and is driven by a rotary table driving motor to rotate; the machining platform is installed in the mode of rotating around the axis perpendicular to the table top of the rotary table, and the machining platform is driven by a platform driving motor to rotate. The clamp is fixedly installed on the machining platform in a detachable mode. The main body part of the machine tool has X, Y and Z linear degrees of freedom, and the clamp part has two rotational degrees of freedom. When a complex curved surface is machined, a cutter can make contact with a workpiece at the best cutting angle and position all the time through linkage of a plurality of shafts.

Description

TECHNICAL FIELD

[0001] The utility model relates to the teaching machine tool equipment field, concretely relates to a teaching five -axis machining machine tool. BACKGROUND

[0002] In engineering teaching, teaching machine tool has the important role of irreplaceable, can combine theory and practice in the teaching process, deepens the understanding of knowledge. For example, the theory knowledge related to mechanical processing is more abstract, such as cutting principle, process parameter etc. Teaching machine tool can let students see the application of these theories in actual processing intuitively, thereby deepening the understanding of knowledge. For the machine tool of teaching, it is required that the volume is small, and the shape is compact. Its worktable area is small, and small workpieces can be placed for processing. Its feeding system is also relatively simple, and the feeding movement in longitudinal, transverse and vertical directions is realized by driving the worktable manually or by a small motor. Part of small milling machines are provided with transparent protective cover, which is convenient for teaching observation. In the processing, students can clearly see the process of milling cutter cutting workpiece through the protective cover, and the operation safety is guaranteed. However, this three-axis milling machine cannot realize multi-axis linkage, and it only has X, Y and Z three linear coordinate axes to realize the feeding movement of the cutter. When processing complex curved surface, the cutter cannot always contact the workpiece at the best cutting angle and position through the linkage of multiple axes. SUMMARY

[0003] Therefore, the utility model aims at developing a teaching five-axis machining machine tool. The main part of the machine tool has three linear degrees of freedom of X, Y and Z, and the clamp part has two rotary degrees of freedom. When processing complex curved surface, the cutter can always contact the workpiece at the best cutting angle and position through the linkage of multiple axes. When processing complex curved surface, the movement of five axes can be controlled at the same time, so that the cutter can accurately cut along the curved surface, the processing error caused by poor cutter posture is reduced, the processing precision is improved, and the structure is simple and compact, so that the machine tool can be miniaturized to the size of desktop, and the teaching display in ordinary classroom is facilitated.

[0004] The utility model discloses a teaching five-axis machining machine tool, including main part and clamping module, the main part is three -axis milling machine;The clamping module includes rotary table, processing platform and clamp;The rotary table is installed in the mode of rotating around horizontal axis, and the rotary table is driven to rotate by rotary table drive motor;The processing platform is installed in the mode of rotating around the axis perpendicular to the rotary table face, and the processing platform is driven to rotate by platform drive motor;The clamp is fixedly installed on the processing platform in the mode of being detachable.

[0005] Further, the clamp comprises a base, two clamping blocks and a clamping screw; the base is provided with a sliding groove, and the two side walls of the sliding groove are respectively provided with limiting grooves; the two clamping blocks are integrally formed with sliding blocks at the bottom for sliding cooperation with the sliding groove; the clamping screw is provided with two thread sections with opposite rotation directions, and the sliding blocks are provided with threaded holes matched with the clamping screw, and the two sides of the sliding blocks are formed with limiting strips matched with the limiting grooves.

[0006] Further, the main body part comprises a machine bed base, an X-axis module, a Y-axis module and a Z-axis module; the machine bed base comprises two vertically arranged and mutually parallel support plates and a transverse connecting plate connected between the support plates; the Y-axis module is connected to the top of the support plates of the machine bed base in a horizontal and longitudinal sliding mode; the X-axis module is connected to the Y-axis module in a horizontal and transverse sliding mode; and the Z-axis module is connected to the X-axis module in a vertical sliding mode; and the rotary table is connected between the two support plates in a rotary mode about a horizontal axis.

[0007] Further, the inner sides of the two support plates are respectively provided with bearing seats and motor housings, and bearings and rotary table driving motors are respectively installed in the bearing seats and the motor housings; one end of the rotary table is supported by the bearings in the bearing seats for rotation, and the other end is fixedly connected to the output shaft of the rotary table driving motor.

[0008] Further, the bottom of the rotary table is provided with a motor mounting seat, and a platform driving motor is fixedly installed in the motor mounting seat, and the output end of the platform driving motor extends out of the rotary table top and is connected with the machining platform.

[0009] Further, the top of the support plate of the machine bed base is provided with a Y-axis guide rail; the Y-axis module comprises a Y-axis support plate and a Y-axis fixed frame which are fixed to each other; the bottom of the Y-axis support plate is provided with a Y-axis sliding block matched with the Y-axis guide rail and a Y-axis ball screw mechanism for driving the Y-axis module to slide along the Y-axis guide rail; and the Y-axis fixed frame is provided with an X-axis guide rail for supporting the sliding of the X-axis module and an X-axis ball screw mechanism for driving the X-axis module to slide along the X-axis guide rail.

[0010] Further, the X-axis module comprises an X-axis fixed frame, an X-axis sliding block arranged at the back of the X-axis fixed frame, a Z-axis guide rail arranged at the front of the X-axis fixed frame and a Z-axis ball screw mechanism for driving the Z-axis module to slide along the Z-axis guide rail.

[0011] Further, the Z-axis module comprises an electric spindle fixed plate, an electric spindle arranged at the electric spindle fixed plate, a Z-axis sliding block matched with the Z-axis guide rail and a tool driven by the electric spindle.

[0012] The utility model discloses a beneficial effect: the utility model discloses a teaching five -axis machine tool, its main part has X, Y, Z three linear degrees of freedom and realizes the feeding movement of tool, and the fixture part has two rotary degrees of freedom. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described below in connection with the drawings and examples:

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the front view of the clamping module of the utility model;

[0016] Figure 3 It is the plan view of the clamping module of the utility model;

[0017] Figure 4 It is the section view of the clamping module of the utility model;

[0018] Figure 5 It is the structural diagram of the fixture of the utility model;

[0019] Figure 6 It is the structural diagram of Y axis module of the utility model;

[0020] Figure 7 It is the structural diagram of X axis module of the utility model;

[0021] Figure 8 It is the structural diagram of Z axis module of the utility model. DETAILED DESCRIPTION

[0022] As Figure 1 shown, a kind of teaching five -axis machine tool of the utility model, including main part and clamping module 5, the main part is three-axis milling machine.

[0023] As Figures 2-4As shown in the drawings, the clamping module 5 comprises a rotary table 52, a machining platform 54 and a clamp 56; the rotary table 52 is installed between the two support plates 11 of the machine bed base 1 in a rotary manner around a horizontal axis; the rotary table 52 is driven to rotate by a rotary table driving motor 59; the machining platform 54 is installed above the rotary table 52 in a rotary manner around an axis perpendicular to the surface of the rotary table 52, and the machining platform 54 is driven to rotate by a platform driving motor 53; the clamp 56 is fixedly installed on the machining platform 54 in a detachable manner. The rotary table 52 is driven to rotate around the horizontal axis by the rotary table driving motor 59, so that the clamped workpiece can also rotate around the horizontal axis; and the machining platform 54 is driven to rotate around the axis perpendicular to the surface of the rotary table 52 by the platform driving motor 53, so that the workpiece can also rotate with the machining platform 54; through the clamping module 5, the workpiece can rotate around two perpendicular axes, so as to adjust the posture of the clamped workpiece, and make the tool always contact the workpiece at the best cutting angle and position.

[0024] As shown in the drawings, Figure 1 The main part comprises a machine bed base 1, an X-axis module 3, a Y-axis module 4 and a Z-axis module 2; as shown in the drawings, Figure 2 The machine bed base 1 comprises two vertically arranged and mutually parallel support plates 11 and a transverse connecting plate 14 connected between the support plates 11; the top of the machine bed base 1 support plate 11 is provided with a Y-axis guide rail 12, the Y-axis module 4 is connected to the Y-axis guide rail 12 on the machine bed base 1 in a horizontal longitudinal sliding manner, the X-axis module 3 is connected to the Y-axis module 4 in a horizontal transverse sliding manner, and the Z-axis module 2 is connected to the X-axis module 3 in a vertical sliding manner; the rotary table 52 is connected between the two support plates 11 in a rotary manner around a horizontal axis. "Longitudinal" in this paper refers to the front-rear direction in the front view of the utility model, i.e. the projection direction of Figure 1 , Figure 1 "Transverse" refers to the left-right direction in the front view. Figure 1

[0025] Figure 2 , 4 As shown in the drawings, the inner sides of the two support plates 11 are respectively provided with a bearing seat 51 and a motor compartment 55, and bearings and a rotary table driving motor 59 are respectively installed in the bearing seat 51 and the motor compartment 55; the rotary table 52 is fixed at the left end of a rotating shaft 58, which is supported by bearings 57 in the bearing seat 51, and the right end of the rotary table 52 is fixedly connected to the output shaft of the rotary table driving motor 59. When the rotary table driving motor 59 rotates, it will drive the workpiece being machined to rotate around the horizontal axis, so as to adjust the posture of the workpiece being machined. Since the bottom of the bearing seat 51 and the motor compartment 55 is fixed to the bottom plate of the machine bed base 1, the stability of the two support plates 11 can be further improved.

[0026] As shown in the drawings, Figure 4 ​As shown, the rotary table 52 is provided with a motor mounting seat in a cylindrical structure, and a platform driving motor 53 is fixedly installed in the motor mounting seat, with its output end extending upward to connect with the machining platform 54. When the platform driving motor 53 rotates, it drives the workpiece to rotate around an axis perpendicular to the rotary table 52, so as to adjust the posture of the workpiece.

[0027] As shown in Figure 5 The clamp 56 includes a base 62, two clamping blocks 61 and a clamping screw 66. The base 62 is provided with a sliding groove, and the two side walls of the sliding groove are respectively provided with limiting grooves 63. The bottom of each clamping block 61 is integrally formed with a sliding block 65 for sliding cooperation with the sliding groove. The clamping screw 66 is provided with two thread sections with opposite rotation directions, and the sliding block 65 is provided with a threaded hole for cooperation with the clamping screw 66. When the clamping screw 66 rotates, the two clamping blocks 61 will simultaneously move closer to or away from each other, so as to clamp and release the workpiece. Limiting strips 64 are formed on the two sides of the sliding block 65 for sliding cooperation with the limiting grooves 63. Through the cooperation of the limiting strips 64 and the limiting grooves 63, the sliding block 65 is prevented from being pulled out of the sliding groove.

[0028] As shown in Figure 6 The Y-axis module 4 includes a Y-axis support plate 42 and a Y-axis fixed frame 45 fixedly connected with each other. The bottom of the Y-axis support plate 42 is provided with a Y-axis sliding block 41 for cooperation with the Y-axis guide rail 12 and a Y-axis ball screw mechanism (including a Y-axis motor 47, a Y-axis screw 48 and a Y-axis nut 13 fixed on the transverse connecting plate 14) for driving the Y-axis module 4 to slide along the Y-axis guide rail 12. The Y-axis fixed frame 45 is provided with an X-axis guide rail 44 for supporting the sliding of the X-axis module 3 and an X-axis ball screw mechanism (including an X-axis motor 46, an X-axis screw 43 and an X-axis nut fixed on the back surface of the X-axis fixed frame 45) for driving the X-axis module 3 to slide along the X-axis guide rail 44. Through the Y-axis ball screw mechanism and the X-axis ball screw mechanism, the cutter can be driven to realize the feeding movement in the X direction (horizontal transverse direction) and the Y direction (horizontal longitudinal direction).

[0029] As shown in Figure 7 The X-axis module 3 includes an X-axis fixed frame 45, an X-axis sliding block arranged on the back surface of the X-axis fixed frame 45, a Z-axis guide rail arranged on the front surface of the X-axis fixed frame 45 and a Z-axis ball screw mechanism (including a Z-axis motor 31, a Z-axis screw 33 and a Z-axis nut 22 fixed on the back surface of the electric spindle fixed plate) for driving the Z-axis module 2 to slide along the Z-axis guide rail. Through the Z-axis ball screw mechanism, the cutter can be driven to realize the feeding movement in the Z direction (vertical direction).

[0030] As shown in Figure 8As shown, the Z-axis module 2 comprises an electric spindle fixing plate 25, an electric spindle 23 fixed to the electric spindle fixing plate 25 through a clamp 24, a Z-axis slider 21 for cooperating with a Z-axis guide rail, and a tool driven by the electric spindle 23; the tool rotates to complete a cutting operation under the driving of the electric spindle 23.

[0031] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A five-axis machining center for teaching purposes, characterized in that: The device includes a main body and a clamping module. The main body is a three-axis milling machine. The clamping module includes a turntable, a machining platform, and a fixture. The turntable is mounted to rotate about a horizontal axis and is driven by a turntable drive motor. The machining platform is mounted to rotate about an axis perpendicular to the turntable surface and is driven by a platform drive motor. The fixture is detachably fixed to the machining platform. The main body includes a bed base, an X-axis module, a Y-axis module, and a Z-axis module; the bed base includes two vertically arranged and parallel support plates and a transverse connecting plate connecting the support plates; the Y-axis module is slidably connected to the top of the support plate of the bed base along the horizontal longitudinal direction, the X-axis module is slidably connected to the Y-axis module along the horizontal transverse direction, and the Z-axis module is slidably connected to the X-axis module along the vertical direction; the turntable is rotatably connected between the two support plates around a horizontal axis. The inner sides of the two support plates are respectively provided with bearing seats and motor compartments. Bearings and turntable drive motors are installed in the bearing seats and motor compartments respectively. One end of the turntable is supported and rotated by the bearing in the bearing seat, and the other end is fixedly connected to the output shaft of the turntable drive motor. The bottom of the bearing seats and motor compartments is fixed to the bottom plate of the bed base. The top of the bed base support plate is provided with a Y-axis guide rail; the Y-axis module includes a Y-axis support plate and a Y-axis fixing frame that are fixed to each other; the bottom of the Y-axis support plate is provided with a Y-axis slider that cooperates with the Y-axis guide rail and a Y-axis ball screw mechanism for driving the Y-axis module to slide along the Y-axis guide rail. The Y-axis ball screw mechanism includes a Y-axis motor, a Y-axis screw, and a Y-axis nut fixed to the transverse connecting plate; the Y-axis fixing frame is provided with an X-axis guide rail for supporting the sliding of the X-axis module and an X-axis ball screw mechanism for driving the X-axis module to slide along the X-axis guide rail.

2. The five-axis machining center for teaching purposes according to claim 1, characterized in that: The clamp includes a base, two clamping blocks, and a clamping screw; the base is provided with a sliding groove, and the two side walls of the sliding groove are respectively provided with limiting grooves; the bottom of the two clamping blocks is integrally formed with sliders for sliding cooperation with the sliding groove; the clamping screw is provided with two threaded sections with opposite directions of rotation; the slider is provided with threaded holes that cooperate with the clamping screw; and the two sides of the slider are formed with limiting strips that slide cooperation with the limiting grooves.

3. The five-axis machining center for teaching purposes according to claim 2, characterized in that: The bottom of the turntable is provided with a motor mounting base, and the platform drive motor is fixedly installed in the motor mounting base, with its output end extending out of the turntable surface and connecting to the processing platform.

4. The five-axis machining center for teaching purposes according to claim 3, characterized in that: The X-axis module includes an X-axis mounting bracket, an X-axis slider disposed on the back of the X-axis mounting bracket, a Z-axis guide rail disposed on the front of the X-axis mounting bracket, and a Z-axis ball screw mechanism for driving the Z-axis module to slide along the Z-axis guide rail.

5. The five-axis machining center for teaching purposes according to claim 4, characterized in that: The Z-axis module includes an electric spindle mounting plate, an electric spindle mounted on the electric spindle mounting plate, a Z-axis slider for cooperating with the Z-axis guide rail, and a cutting tool driven by the electric spindle.

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