Double-spindle vertical machining center

Abstract

The invention relates to the technical field of machine tool machining, in particular to a double-spindle vertical machining center which comprises a base and a stand column vertically arranged behind the base, a left spindle box assembly and a right spindle box assembly are arranged on the front face of the stand column in a sliding mode, the left spindle box assembly and the right spindle box assembly are arranged in parallel, and a milling spindle is arranged in the left spindle box assembly. A left tool magazine assembly and a right tool magazine assembly are arranged on the two side faces of the stand column, a sliding seat is arranged on the base in a sliding mode, a workbench is arranged on the sliding seat in a sliding mode, a rotating table is arranged on the workbench, and the left spindle box assembly and the right spindle box assembly are arranged above the rotating table in a suspended mode. The table top is hinged to the table base, the table base is in sliding connection with the sliding base, a turnover assembly for driving the table top to turn over is arranged in the sliding base, and an automatic scrap scraping assembly is arranged on the table top.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool processing, in particular to a double-spindle vertical machining center. Background Art

[0002] A machining center is a CNC machine tool equipped with a tool magazine and automatic tool changing function, which can perform multiple-step processing after clamping the workpiece once. A typical machining center only has one workbench and one spindle. When multiple processes are involved in processing, it needs to be re-clamped, which makes the two adjacent processes discontinuous. At the same time, too many repeated clamping times can easily lead to error accumulation, resulting in geometric tolerances that affect the processing accuracy. It is neither efficient nor guarantees high-quality processing. During processing, the workpiece will produce a lot of waste chips falling on the workbench. Since there are several T-slots on the surface of the workbench, the waste chips will fall into the T-slots and are difficult to clean. Usually, the operator needs to use an air gun to clean the workbench. However, the high pressure of the air gun will cause the waste chips to splash, which poses a certain safety hazard. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a dual-spindle vertical machining center to achieve integrated milling and grinding processing and automatic cleaning of waste chips in view of the above-mentioned deficiencies in the prior art.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dual-spindle vertical machining center, comprising a base and a column arranged at the rear of the base, a left spindle box assembly and a right spindle box assembly being slidably disposed on the front of the column, the left spindle box assembly and the right spindle box assembly being arranged in parallel, a milling spindle being arranged in the left spindle box assembly, a grinding spindle being arranged in the right spindle box assembly, a left tool magazine assembly and a right tool magazine assembly being arranged on both sides of the column, a sliding seat being slidably disposed on the base, a worktable being slidably disposed on the sliding seat, a rotating table being arranged on the worktable, the left spindle box assembly and the right spindle box assembly being suspended above the rotating table, the worktable comprising a table top and a pedestal, the table top and the pedestal being hinged, the pedestal being slidably connected to the sliding seat, a flipping assembly for driving the table top to flip being arranged in the sliding seat, and an automatic scraping assembly being arranged on the table top.

[0005] The present invention with the above-mentioned characteristics: by setting up independent milling spindles and grinding spindles and respectively equipping them with tool magazines, a structure integrating dual spindles and dual tool magazines is realized. When the workpiece is milled and ground, there is no need to re-clamp due to replacement of processing equipment, which reduces the errors caused by multiple clamping, improves the workpiece processing accuracy and work efficiency, and reduces the occupied area; the fliptable table top is combined with the automatic scraping component to realize the function of automatic cleaning of waste chips in the machining center, and the operator does not need to use an air gun to clean the waste chips in the workbench.

[0006] A further configuration of the present invention is that the automatic scraper assembly includes a slide rod, a lead screw, a drive motor and a scraper piece, and rectangular grooves for installing the lead screw and the slide rod are respectively provided on one horizontal side surface of the table top, one end of the lead screw is fixed in the rectangular groove, and the other end passes through the groove wall of the rectangular groove to be connected with the drive motor, both ends of the slide rod are fixed in the rectangular groove, and the drive motor is fixedly installed on the table top, and the scraper piece is slidably arranged on the table top, including a horizontally arranged scraper portion and two vertically arranged connecting portions, and the connecting portions are arranged at both ends of the scraper portion, one connecting portion passes through the lead screw and is threadedly connected to the lead screw, and the other connecting portion passes through the slide rod, and the scraper portion is attached to the table top on one side facing the table top, and is provided with a plurality of scraper knives adapted to the T-slots on the table top.

[0007] The present invention with the above-mentioned characteristics: a driving motor is arranged on the table top to drive the screw to rotate, and the connecting part connected to the screw thread can move axially along the screw with the rotation of the screw, and the scraper part moves along the table top driven by the connecting part to clean the upper end surface of the table top, thereby realizing the automation of scraping. Since the scraper part is provided with a scraper adapted to the T-slot, it is ensured that the scraper can penetrate into the T-slot and effectively scrape off the waste chips in the slot, thereby avoiding the residue and accumulation of waste chips. Different from the method of cleaning the workbench with an air gun, the use of an automatic scraper assembly can avoid the problem of waste chips splashing caused by a high-pressure air gun, thereby reducing the safety hazard during operation.

[0008] A further configuration of the present invention is that a plurality of saw teeth are arranged on one side of the scraper portion facing the table top, and the saw teeth and the scraper are both made of rubber.

[0009] The present invention with the above characteristics: by arranging a plurality of saw teeth on the scraper part, it has the effect of a brush and can scrape away iron filings; the saw teeth and the scraper are both made of rubber material, which can effectively prevent the scraper from scratching the workbench when contacting the workbench.

[0010] A further configuration of the present invention is: the sliding seat is horizontally arranged above the base, the workbench is arranged parallel to the sliding seat, the transverse end of the table top and the transverse end of the seat are hinged by a hinge, the flip assembly is arranged on the sliding seat near the transverse head end of the table top, the flip assembly includes a flip seat, a pneumatic rod, and a connecting seat, the flip seat is fixedly installed in the sliding seat, the connecting seat is fixedly installed on the side of the table top, and the two ends of the pneumatic rod are respectively hinged to the flip seat and the connecting seat.

[0011] The present invention with the above characteristics: by configuring the workbench into a flippable table top and a non-flippable base, the table top can be driven to tilt by the flipping component during subsequent cleaning and maintenance work, causing the waste chips in the table top and T-slot to slide down under the action of gravity. When used in conjunction with an automatic scraping component, the cleaning force and efficiency can be improved.

[0012] A further configuration of the present invention is that a first magnet is disposed on the lower end surface of the table top, an adsorption groove for accommodating the first magnet is disposed on the upper end surface of the base, and a second magnet attracted to the first magnet is embedded in the adsorption groove.

[0013] The present invention with the above characteristics: by arranging magnets that can attract each other on the table top and the base, when the table top is not turned over, it can maintain overlap with the base under the suction force of the magnets, thereby preventing the workbench from moving during sliding and processing.

[0014] A further configuration of the present invention is: a group of longitudinal guide rails are provided on the base, the bottom of the sliding seat is connected to the longitudinal guide rails, a longitudinal driving source for driving the sliding seat to make longitudinal reciprocating displacement on the longitudinal guide rails is provided in the base, a group of transverse guide rails are provided on the sliding seat, the bottom of the workbench is connected to the transverse guide rails, and a transverse driving source for driving the workbench to make transverse reciprocating displacement on the transverse guide rails is provided in the sliding seat.

[0015] The present invention with the above characteristics realizes high-precision positioning of the workpiece in a two-dimensional plane through precise guidance of the longitudinal guide rail and the transverse guide rail, and precise control of the longitudinal drive source by the transverse drive source; the longitudinal guide rail and the transverse guide rail are overlapped to make the entire system compact and occupy a small area.

[0016] A further configuration of the present invention is that the rotation angle of the rotating table is 360°.

[0017] The present invention having the above-mentioned characteristics uses a rotating table with a rotation angle of 360°, which can drive the workpiece placed thereon to rotate 360°, thereby adjusting the position of the workpiece.

[0018] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of a base, a sliding seat and a workbench according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic structural diagram of a sliding seat and a workbench according to an embodiment of the present invention.

[0022] Figure 4 Schematic diagram of the flipping of the workbench according to the embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the structure of the scraper according to the embodiment of the present invention. DETAILED DESCRIPTION

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0025] like Figure 1-5 A dual-spindle vertical machining center shown in the figure comprises a base 1, a column 2 erected at the rear of the base 1, a left spindle box assembly 3 and a right spindle box assembly 4 are slidably arranged on the front of the column 2, the left spindle box assembly 3 and the right spindle box assembly 4 are arranged in parallel, a milling spindle 31 is arranged in the left spindle box assembly 3, a grinding spindle 41 is arranged in the right spindle box assembly 4, a left tool magazine assembly 5 and a right tool magazine assembly 6 are arranged on both sides of the column 2, a sliding seat 7 is slidably arranged on the base 1, a workbench 8 is slidably arranged on the sliding seat 7, a rotating table 9 is arranged on the workbench, and the rotating The rotation angle is 360°. The left spindle box assembly 3 and the right spindle box assembly 4 are suspended above the rotating table 9. The workbench 8 includes a table top 81 and a base 82. The table top 81 and the base 82 are hinged. The lower end surface of the table top 81 is provided with a first magnet 11, and the upper end surface of the base 82 is provided with an adsorption groove 821 for accommodating the first magnet 11. The adsorption groove 821 is embedded with a second magnet 12 attracted to the first magnet 11. The base 82 is slidably connected to the sliding seat 7. The sliding seat 7 is provided with a flipping assembly 30 for driving the table top 81 to flip, and an automatic scraping assembly 20 is provided on the table top 81.

[0026] The automatic scraper assembly 20 includes a slide bar (not shown in the figure), a screw rod 21, a drive motor 22 and a scraper 23. A rectangular groove 811 for mounting the screw rod 21 and the slide bar is provided on one side of the table 81 in the horizontal direction. One end of the screw rod 21 is fixed in the rectangular groove 811, and the other end passes through the groove wall of the rectangular groove 811 to connect with the drive motor 22. Both ends of the slide bar are fixed in the rectangular groove 811. The drive motor 22 is fixedly mounted on the table 81. The scraper 23 is slidably arranged on the table 81, and includes a scraper portion arranged in the horizontal direction. 231, two vertically arranged connecting parts 232, the connecting parts 232 are arranged at both ends of the scraper part 231, one connecting part 232 passes through the screw rod 21 and is threadedly connected to it, and the other connecting part 232 passes through the sliding rod, and the side of the scraper part 231 facing the table top 81 is in contact with the table top 81, and a plurality of scrapers 233 adapted to the T-slots 812 on the table top 81 are arranged thereon, and a plurality of saw teeth 234 are arranged on the side of the scraper part 231 facing the table top 81, and the saw teeth 234 and the scraper 233 are both made of rubber.

[0027] The sliding seat 7 is horizontally arranged above the base 1, the workbench 8 is arranged parallel to the sliding seat 7, the transverse end of the table top 81 and the transverse end of the table top 82 are hinged by a hinge, and the flip assembly 30 is arranged on the sliding seat 7 near the transverse head end of the table top 81. The flip assembly 30 includes a flip seat 31, a pneumatic rod 32, and a connecting seat 33. The flip seat 31 is fixedly installed in the sliding seat 7, and the connecting seat 33 is fixedly installed on the side of the table top 81. The two ends of the pneumatic rod 32 are hinged to the flip seat 31 and the connecting seat 33 respectively.

[0028] A group of longitudinal guide rails 13 are provided on the base 1, and the bottom of the sliding seat 7 is connected to the longitudinal guide rails 13. A longitudinal driving source 14 is provided in the base 1 for driving the sliding seat 7 to make a longitudinal reciprocating displacement on the longitudinal guide rails 13. A group of transverse guide rails 15 are provided on the sliding seat 7, and the bottom of the workbench 8 is connected to the transverse guide rails 15. A transverse driving source 16 is provided in the sliding seat 7 for driving the workbench 8 to make a transverse reciprocating displacement on the transverse guide rails 15.

[0029] In the actual production process, the milling spindle on the left side of the dual-spindle vertical machining center can perform milling processing (finishing processing) on ​​the workpiece, and the grinding spindle on the right side can perform grinding processing (super-finishing processing) on ​​the workpiece. The workpiece is placed on a rotary table, and the position of the workpiece on the X and Y axes is adjusted through the cooperation of the longitudinal drive source and the transverse drive source. The accuracy of the rotary table is one thousandth of a degree. By rotating the rotary table, the workpiece can be fine-tuned, rotated along the Z axis, and other actions can be achieved.

[0030] After the processing is completed, the rotary table can be removed, and the pneumatic rod drives the table top of the workbench to flip over. The table top stops flipping after it flips to a certain inclination. The driving motor drives the lead screw to rotate, and the scraper connected to the lead screw thread moves back and forth axially along the lead screw, moving from the raised end of the table top to the hinged end of the table top and the base to scrape off the waste chips, thereby realizing the automation of waste chip cleaning.

Claims

1. A dual-spindle vertical machining center, comprising a base and a column arranged at the rear of the base, characterized in that: A left spindle box assembly and a right spindle box assembly are slidably provided on the front side of the column, the left spindle box assembly and the right spindle box assembly are arranged in parallel, a milling spindle is arranged in the left spindle box assembly, a grinding spindle is arranged in the right spindle box assembly, a left tool magazine assembly and a right tool magazine assembly are arranged on both sides of the column, a sliding seat is slidably provided on the base, a worktable is slidably provided on the sliding seat, a rotating table is arranged on the worktable, the left spindle box assembly and the right spindle box assembly are suspended above the rotating table, the worktable includes a table top and a base, the table top is hinged to the base, the base is slidably connected to the sliding seat, a flipping assembly for driving the table top to flip is provided in the sliding seat, and an automatic scraping assembly is provided on the table top.

2. A dual-spindle vertical machining center according to claim 1, characterized in that: The automatic scraper assembly includes a slide rod, a lead screw, a drive motor and a scraper piece. Rectangular grooves for installing the lead screw and the slide rod are respectively provided on one horizontal side of the table top. One end of the lead screw is fixed in the rectangular groove, and the other end passes through the groove wall of the rectangular groove to be connected with the drive motor. Both ends of the slide rod are fixed in the rectangular groove, and the drive motor is fixedly installed on the table top. The scraper piece is slidably arranged on the table top, including a horizontally arranged scraper part and two vertically arranged connecting parts. The connecting parts are arranged at both ends of the scraper part, one connecting part passes through the lead screw and is threadedly connected to the lead screw, and the other connecting part passes through the slide rod. The scraper part is attached to the table top on one side facing the table top, and is provided with a plurality of scraper knives adapted to the T-slots on the table top.

3. A dual-spindle vertical machining center according to claim 2, characterized in that: A plurality of saw teeth are arranged on one side of the scraper portion facing the table top, and the saw teeth and the scraper are both made of rubber.

4. A dual-spindle vertical machining center according to claim 1 or 2, characterized in that: The sliding seat is horizontally arranged above the base, the workbench is arranged parallel to the sliding seat, the transverse end of the table top and the transverse end of the seat are hinged by a hinge, the flip assembly is arranged on the sliding seat near the transverse head end of the table top, the flip assembly includes a flip seat, a pneumatic rod, and a connecting seat, the flip seat is fixedly installed in the sliding seat, the connecting seat is fixedly installed on the side of the table top, and the two ends of the pneumatic rod are respectively hinged to the flip seat and the connecting seat.

5. A dual-spindle vertical machining center according to claim 4, characterized in that: A first magnet is disposed on the lower end surface of the table top, an adsorption groove for accommodating the first magnet is disposed on the upper end surface of the base, and a second magnet attracted to the first magnet is embedded in the adsorption groove.

6. A dual-spindle vertical machining center according to claim 1, characterized in that: The base is provided with a group of longitudinal guide rails, the bottom of the sliding seat is connected to the longitudinal guide rails, the base is provided with a longitudinal driving source for driving the sliding seat to make longitudinal reciprocating displacement on the longitudinal guide rails, the sliding seat is provided with a group of transverse guide rails, the bottom of the workbench is connected to the transverse guide rails, and the sliding seat is provided with a transverse driving source for driving the workbench to make transverse reciprocating displacement on the transverse guide rails.

7. The dual-spindle vertical machining center according to claim 1, characterized in that: The rotation angle of the rotating table is 360°.

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