Combined type horizontal machining center machine tool

Abstract

The invention relates to the technical field of machine tools, in particular to a combined type horizontal machining center machine tool which comprises an X-direction feeding mechanism, a numerical control rotating table is arranged on the X-direction feeding mechanism in a sliding mode, and a Z-direction feeding mechanism is vertically and fixedly connected to the side wall of the X-direction feeding mechanism. A Y-direction feeding mechanism is arranged on the Z-direction feeding mechanism in a sliding mode, a spindle box is arranged on the Y-direction feeding mechanism in a sliding mode, and a cutter head mechanism is arranged at the front end of the spindle box. A rotating shaft (B shaft) and a D-direction movement for realizing transverse advancing and transverse retreating of a cutter are added on the basis of a conventional three-axis machining machine tool; under the condition that a workpiece is clamped at a time, rotation of the shaft B is increased, and machining of multiple faces is achieved; and D-direction movement is added, turning is achieved, the machining range is enlarged, and the machining efficiency is improved. In addition, automatic tool changing can be achieved by means of a tool magazine system and a mechanical arm, and the automation degree and the machining efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tools, and in particular to a compound horizontal machining center machine tool. Background Art

[0002] With the continuous development of the economy, customer demands are becoming increasingly diverse, posing higher requirements for the production models of manufacturing enterprises. The large-batch production mode has gradually been replaced by modular and flexible production modes. Therefore, a large number of machining centers have emerged. However, the machining centers have low machining efficiency and limited machining ranges. In order to meet customer demands, especially in the field of machining valve products, there is an urgent need to design a product that combines a numerically controlled lathe and a machining center to meet the diverse workpiece machining requirements. Summary of the Invention

[0003] The purpose of the present invention is to provide a compound horizontal machining center machine tool to solve the problems of limited machining range and low efficiency in the use of conventional horizontal machining machine tools.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a compound horizontal machining center machine tool, including an X-axis feed mechanism. A numerically controlled rotary table is slidably arranged on the X-axis feed mechanism. A Z-axis feed mechanism is vertically and fixedly connected to the side wall of the X-axis feed mechanism. A Y-axis feed mechanism is slidably arranged on the Z-axis feed mechanism. A spindle box is slidably arranged on the Y-axis feed mechanism. A tool disc mechanism is arranged at the front end of the spindle box.

[0006] Further, the X-axis feed mechanism includes a front bed body and a front table surface arranged on the front bed body. A slide rail one is arranged on the front bed body. The front table surface is limitedly arranged on the slide rail one and realizes X-axis movement on the slide rail one through a lead screw transmission mechanism. The numerically controlled rotary table is arranged on the front table surface.

[0007] Still further, the numerically controlled rotary table includes a built-in slewing bearing and a servo motor for driving the slewing bearing. A hydraulic locking mechanism is also arranged on the numerically controlled rotary table and is controlled in cooperation with the servo system to realize B-axis rotation to meet the multi-sided machining of workpieces. A plurality of T-shaped grooves are prefabricated on the numerically controlled rotary table to facilitate the fixation of workpieces.

[0008] Still further, the Z-axis feed mechanism includes a rear bed body and a rear table surface arranged on the rear bed body. A slide rail two is arranged on the rear bed body. The rear table surface is limitedly arranged on the slide rail two and realizes Z-axis movement on the slide rail two through a lead screw transmission mechanism. A column is arranged on the rear table surface.

[0009] Furthermore, the front bed and the rear bed are vertically fixedly connected to form a T-shaped bed, and within the entire range, the workbench and the workpiece are completely supported on the T-shaped bed.

[0010] Furthermore, the Y-direction feeding mechanism includes a column and a balancing mechanism, a slide rail three is arranged on the column, the spindle box is limited on the slide rail three, and the Y-direction movement on the slide rail three is realized through a screw transmission mechanism and a servo control system; the spindle box also performs Z-direction movement driven by the Y-direction feeding mechanism; the balancing mechanism includes a balancing cylinder that drives the spindle box to slide on the slide rail three.

[0011] Furthermore, two sets of spindle mechanisms are arranged in the spindle box, including an inner spindle mechanism and an outer spindle mechanism respectively;

[0012] The inner spindle mechanism includes a separately driven inner spindle servo motor, a tool-beating cylinder and a tool internal cooling system, and the inner spindle mechanism also includes an inner spindle driven by the inner spindle servo motor. A tool with a BT50 tool holder is arranged at the front end of the inner spindle, and is driven by the inner spindle servo motor to realize drilling, boring, reaming, tapping and milling processes;

[0013] An outer spindle is arranged in the spindle box and is coaxially sleeved on the outside of the inner spindle through a bearing.

[0014] Furthermore, the outer spindle mechanism includes an outer spindle servo motor that drives the outer spindle alone, and a transverse cutter disc is arranged at the front end of the outer spindle;

[0015] The transverse cutter disc comprises a cutter disc body and a slider, wherein the cutter disc body and the slider are relatively movable, and a cutter is mounted on the slider;

[0016] A lateral cutter disc servo motor for adjusting the position of the slider is arranged in the spindle box, and a D-axis transmission screw for driving the slider to move radially is also arranged in the spindle box, and the D-axis transmission screw is connected to the lateral cutter disc servo motor through a differential; in conjunction with the servo system control, the tool can move in and out of the lateral direction, and the Z-axis can be linked to move and the C-axis can be rotated to meet the processing requirements of end face turning, outer circle turning, hole turning, chamfering and thread turning.

[0017] Furthermore, it also includes a tool magazine system, which includes a tool magazine bracket, on which a horizontal disc tool magazine is arranged, and a mechanical arm is installed on the side of the horizontal disc tool magazine, and is driven by a servo motor and a pneumatic cylinder to achieve automatic tool changing, thereby improving the degree of automation and processing efficiency.

[0018] Compared with conventional technologies, the beneficial technical effects of the present invention are:

[0019] In the present invention, the front bed and the rear bed are fixedly connected to form a T-shaped bed. The structure of the T-shaped bed is such that the worktable moves in the X direction along the bed. Throughout the entire range, the worktable and the workpiece are fully supported on the bed. The X-axis, Y-axis, and Z-axis all adopt hard rails for movement. The external forces received by the moving parts of the machine tool are finally borne by the guide rail surfaces. The machine tool has good rigidity, the worktable has a strong load-bearing capacity, and it is easy to ensure the machining accuracy.

[0020] In the present invention, a rotating shaft (B-axis) and a D-direction movement for realizing the transverse feed and retraction of the tool are added on the basis of a conventional three-axis machining machine tool; with the workpiece clamped once, the rotation of the B-axis is increased to realize the machining of multiple surfaces; the D-direction movement is increased to realize turning machining, expanding the machining range and improving the machining efficiency.

[0021] In addition, in the present invention, an automatic tool change can be realized by means of a tool magazine system and a robotic arm, improving the automation level and machining efficiency. Brief Description of the Drawings

[0022] The present invention will be further described below in conjunction with the drawings.

[0023] Figure 1 It is a schematic diagram of the main body of the compound horizontal machining center machine tool of the present invention;

[0024] Figure 2 It is a schematic diagram of another angle of the compound horizontal machining center machine tool of the present invention;

[0025] Figure 3 It is a schematic side view of the compound horizontal machining center machine tool of the present invention;

[0026] Figure 4 It is a schematic top view of the compound horizontal machining center machine tool of the present invention;

[0027] Figure 5 It is a schematic diagram of the horizontal tool magazine system on the compound horizontal machining center machine tool of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the spindle box in the compound horizontal machining center machine tool of the present invention;

[0029] Figure 7 It is Figure 6 a partially enlarged schematic diagram at position B in

[0030] Figure 8 It is a schematic diagram of the installation of the balance cylinder on the column in the compound horizontal machining center machine tool of the present invention.

[0031] Description of reference numerals: 1. X-axis feeding mechanism; 11. Front bed; 12. Front table; 2. NC rotary table; 3. Z-axis feeding mechanism; 31. Rear bed; 32. Rear table; 4. Y-axis feeding mechanism; 41. Column; 42. Balance cylinder; 5. Spindle box; 51. Inner spindle servo motor; 52. Outer spindle servo motor; 53. Tool clamping cylinder; 6. Cross-feed turret; 61. Turret body; 62. Slide block; 63. Inner spindle; 64. Outer spindle; 65. Cross-feed turret servo motor; 66. Differential; 67. D-axis transmission lead screw; 7. Tool magazine system; 71. Tool magazine support; 72. Horizontal disc-type tool magazine; 73. Robot arm. Detailed implementation mode

[0032] The following further describes this embodiment in detail in conjunction with the accompanying drawings and the specific implementation mode. The embodiments used in the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0033] Refer to Figure 1 , a compound horizontal machining center machine tool is provided in this embodiment, including an X-axis feeding mechanism 1, on which an NC rotary table 2 is slidably installed, a Z-axis feeding mechanism 3 is vertically and fixedly connected to the side wall of the X-axis feeding mechanism 1, a Y-axis feeding mechanism 4 is slidably installed on the Z-axis feeding mechanism 3, a spindle box 5 is slidably installed on the Y-axis feeding mechanism 4, and a turret mechanism 6 is installed at the front end of the spindle box 5.

[0034] Refer to Figure 1 and Figure 2 , the X-axis feeding mechanism 1 includes a front bed 11 and a front table 12 installed on the front bed 11, and the two are slidably connected in a hard rail form; and are driven by a servo motor and transmitted by a lead screw to cooperate with the servo system control to achieve X-axis movement.

[0035] During specific implementation, a slide rail 1 is installed on the front bed 11, the front table 12 is limit-installed on the slide rail 1, and X-axis movement is achieved on the slide rail 1 through a lead screw transmission mechanism; an NC rotary table 2 is installed on the front table 12.

[0036] Refer to Figure 2 and Figure 3, the numerically controlled rotary table 2 includes a rotating housing, a slewing bearing built into the rotating housing, a workpiece chuck fixedly installed on the top of the internal gear ring of the slewing bearing, and a servo motor for driving the inner ring of the slewing bearing to rotate; specifically, an internal gear ring can be prefabricated on the inner ring of the slewing bearing, and a gear adapted to mesh therewith is installed on the power output shaft of the servo motor; a hydraulic locking mechanism is also installed on the numerically controlled rotary table 2 to lock and position the rotating disk at the top of the numerically controlled rotary table 2, specifically in cooperation with the servo system control to achieve B-axis rotation and meet the multi-sided machining of workpieces; a plurality of T-shaped grooves are prefabricated in the workpiece chuck of the numerically controlled rotary table 2 to facilitate the fixing of workpieces.

[0037] Reference Figure 1 and Figure 4 , the Z-axis feed mechanism 3 includes a rear bed 31 and a rear table 32 installed on the rear bed 31, and the two are also slidably connected in the form of hard rails; and it is driven by a servo motor and transmitted by a lead screw to cooperate with the servo system control to achieve Z-axis movement.

[0038] During specific implementation, a second slide rail is installed on the rear bed 31, the rear table 32 is installed on the second slide rail in a limited manner, and Z-axis movement is achieved on the second slide rail through a lead screw transmission mechanism; a column 41 is installed on the rear table 32.

[0039] Reference Figure 4 , the front bed 11 and the rear bed 31 are vertically and fixedly connected to form a T-shaped bed, and within the entire range, the worktable and the workpiece are fully supported on the T-shaped bed.

[0040] Reference Figure 1 and Figure 2 , the Y-axis feed mechanism 4 includes a column 41 and a balance mechanism. The spindle box 5 is slidably connected to the upper surface of the column 41 by hard rails, driven by a servo motor and transmitted by a lead screw, and cooperates with the servo system control.

[0041] Reference Figure 8 , the balance mechanism includes a balance cylinder 42 for driving the spindle box 5 to slide on the third slide rail.

[0042] In this embodiment, the balance mechanism selects a nitrogen balance cylinder. Specifically, using the principle of compressed nitrogen energy storage, when the spindle rises, nitrogen expands to push the oil to balance the gravity, and when it descends, the oil flows back to buffer.

[0043] During specific implementation, a third slide rail is installed on the column 41, the spindle box 5 is limited on the third slide rail, and Y-axis movement is achieved on the third slide rail through a lead screw transmission mechanism and a servo control system; the spindle box 5 also performs Z-axis movement driven by the Y-axis feed mechanism 4.

[0044] ReferenceFigure 2 and Figure 3 Two sets of spindle mechanisms are installed in the spindle box 5, including an inner spindle mechanism and an outer spindle mechanism respectively.

[0045] refer to Figure 6 and Figure 7 The inner spindle mechanism includes a separately driven inner spindle servo motor 51, a tool beating cylinder 53 and a tool internal cooling system. The inner spindle mechanism also includes an inner spindle 63 driven by the inner spindle servo motor 51. A tool with a BT50 shank is installed at the front end of the inner spindle 63, and is driven by the inner spindle servo motor 51 to realize drilling, boring, reaming, tapping and milling processes.

[0046] refer to Figure 7 , wherein an outer spindle 64 is installed in the spindle box 5 and is coaxially sleeved on the outside of the inner spindle 63 through a bearing.

[0047] In this embodiment, the outer spindle mechanism includes an outer spindle servo motor 52 that independently drives the outer spindle 64, and a transverse feed cutter disc 6 is installed at the front end of the outer spindle 64; the transverse feed cutter disc 6 includes a cutter disc body 61 and a slider 62, and the cutter disc body 61 and the slider 62 are relatively movable, and a tool is installed on the slider 62; a transverse feed cutter disc servo motor 65 for adjusting the position of the slider 62 is installed in the spindle box 5, and a D-direction transmission screw 67 for driving the slider 62 to move radially is also installed in the spindle box 5, and the D-direction transmission screw 67 is connected to the transverse feed cutter disc servo motor 65 through a differential 66; in conjunction with the servo system control, the tool can be moved in and out, and the Z-axis can be moved and the C-axis can be rotated to meet the processing requirements of end face turning, outer circle turning, hole turning, chamfering, and thread turning.

[0048] The present embodiment also includes a tool magazine system 7, which includes a tool magazine bracket 71, on which a horizontal disc tool magazine 72 is mounted, and a mechanical arm 73 is mounted on the side of the horizontal disc tool magazine 72, and is driven by a servo motor and a pneumatic cylinder to achieve automatic tool change, thereby improving the degree of automation and processing efficiency.

[0049] The above embodiments are only descriptions of the preferred modes of the invention, and are not intended to limit the scope of the invention. Without departing from the spirit of the invention, various modifications and improvements made by ordinary technicians in the field to the technical solution of the invention should fall within the scope of protection determined by the claims of the invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified and limited.

Claims

1. A compound horizontal machining center machine tool, comprising an X-axis feed mechanism (1), characterized in that: A numerically controlled rotary table (2) is slidably arranged on the X-direction feeding mechanism (1). A Z-direction feeding mechanism (3) is vertically and fixedly connected to the side wall of the X-direction feeding mechanism (1). A Y-direction feeding mechanism (4) is slidably arranged on the Z-direction feeding mechanism (3). A spindle box (5) is slidably arranged on the Y-direction feeding mechanism (4). A tool disc mechanism (6) is arranged at the front end of the spindle box (5).

2. The compound horizontal machining center machine tool according to claim 1, characterized in that: The X-direction feeding mechanism (1) includes a front bed body (11) and a front table surface (12) arranged on the front bed body (11). A first slide rail is arranged on the front bed body (11). The front table surface (12) is limited on the first slide rail and realizes X-direction movement on the first slide rail through a lead screw transmission mechanism. The numerically controlled rotary table (2) is arranged on the front table surface (12).

3. The compound horizontal machining center machine tool according to claim 1, characterized in that: The numerically controlled rotary table (2) includes a built-in slewing bearing and a servo motor for driving the slewing bearing. A hydraulic locking mechanism is also arranged on the numerically controlled rotary table (2) and is controlled in cooperation with the servo system to realize B-axis rotation and meet the multi-sided machining of workpieces. A plurality of T-shaped grooves are prefabricated on the numerically controlled rotary table (2) to facilitate the fixation of workpieces.

4. The compound horizontal machining center machine tool according to claim 1, characterized in that: The Z-direction feeding mechanism (3) includes a rear bed body (31) and a rear table surface (32) arranged on the rear bed body (31). A second slide rail is arranged on the rear bed body (31). The rear table surface (32) is limited on the second slide rail and realizes Z-direction movement on the second slide rail through a lead screw transmission mechanism. A column (41) is arranged on the rear table surface (32).

5. The compound horizontal machining center machine tool according to claim 1, characterized in that: The front bed body (11) and the rear bed body (31) are vertically and fixedly connected into a T-shaped bed body. The worktable and the workpiece are fully supported on the T-shaped bed body within the whole range.

6. The compound horizontal machining center machine tool according to claim 1, wherein: The Y-direction feeding mechanism (4) includes a column (41) and a balance mechanism. A third slide rail is arranged on the column (41). The spindle box (5) is limited on the third slide rail and realizes Y-direction movement on the third slide rail through a lead screw transmission mechanism and a servo control system. The spindle box (5) moves in the Z direction under the drive of the Y-direction feeding mechanism (4). The balance mechanism includes a balance cylinder (42) for driving the spindle box (5) to slide on the third slide rail.

7. The compound horizontal machining center machine tool according to claim 6, wherein: Two sets of spindle mechanisms are arranged in the spindle box (5), including an inner spindle mechanism and an outer spindle mechanism respectively. The inner spindle mechanism includes an independently driven inner spindle servo motor (51), a tool clamping cylinder (53) and a tool internal cooling system. The inner spindle mechanism further includes an inner spindle (63) driven by the inner spindle servo motor (51). A tool with a BT50 tool holder is arranged at the front end of the inner spindle (63) and is driven by the inner spindle servo motor (51) to realize the processing of drilling, boring, reaming, tapping and milling operations. An outer spindle (64) is coaxially arranged outside the inner spindle (63) in the spindle box (5) through a bearing.

8. The compound horizontal machining center machine tool according to claim 7, characterized in that: The outer spindle mechanism comprises an outer spindle servo motor (52) for independently driving the outer spindle (64), and a transverse cutter disc (6) is arranged at the front end of the outer spindle (64); The transverse cutter disc (6) comprises a cutter disc body (61) and a slide block (62), wherein the cutter disc body (61) and the slide block (62) are assembled so as to be relatively movable, and a cutter is assembled on the slide block (62); A lateral cutter disc servo motor (65) for adjusting the position of the slider (62) is arranged in the spindle box (5), and a D-axis transmission screw (67) for driving the slider (62) to move radially is also arranged in the spindle box (5). The D-axis transmission screw (67) is connected to the lateral cutter disc servo motor (65) through a differential (66); in conjunction with the servo system control, the tool can move in and out of the lateral direction, and the Z-axis can be linked to the C-axis to rotate, so as to meet the processing requirements of turning end faces, turning outer circles, turning holes, turning chamfers, and turning threads.

9. The compound horizontal machining center machine tool according to claim 1, characterized in that: The invention also comprises a tool magazine system (7), wherein the tool magazine system (7) comprises a tool magazine support (71), a horizontal disc-type tool magazine (72) is arranged on the tool magazine support (71), a mechanical arm (73) is installed on the side of the horizontal disc-type tool magazine (72), and is driven by a servo motor and a pneumatic cylinder to realize automatic tool change, thereby improving the degree of automation and processing efficiency.

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