CN221755416U - A pneumatic expansion device for vertical machining center - Google Patents

Abstract

The utility model relates to the technical field of vertical machining and discloses a pneumatic expansion device for a vertical machining center, which comprises an expansion main body, wherein the top of the expansion main body is fixedly connected with a fixing plate, the top of the fixing plate is fixedly connected with a connecting plate, a first mounting plate is hinged on the connecting plate, an expansion cylinder is fixedly connected on the first mounting plate, a second mounting plate is fixedly connected with the telescopic end of the expansion cylinder, an L-shaped connecting rod is hinged on the second mounting plate, a fixing block is fixedly connected on the expansion main body, one end of the L-shaped connecting rod is hinged on the fixing block, the middle part of the L-shaped connecting rod is hinged with a connecting rod, one end of the connecting rod is hinged with a sliding block, and a connecting rod is fixedly connected on the sliding block. According to the utility model, the expansion cylinder drives the L-shaped connecting rod to move, and the L-shaped connecting rod drives the sliding block to slide on the guide plate through the connecting rod, so that the clamping plate and the clamping block are driven to clamp and fix a workpiece.

Description

A pneumatic expansion device for vertical machining center

Technical Field

The utility model relates to the technical field of vertical machining, in particular to a pneumatic expansion device for a vertical machining center.

Background Art

With the development of metal processing industry, vertical machining center has been widely used. Vertical machining center refers to the machining center with the spindle axis vertically set to the worktable. It is a highly mechatronic CNC equipment equipped with a tool magazine and automatic tool changing function. After the workpiece is clamped, the CNC system can control the machine tool to automatically select and replace tools, automatically set tools, automatically change the spindle speed and feed rate according to different processes, and can continuously complete drilling, boring, milling, lapping, tapping and other processes, thus greatly reducing the time of multiple clamping of the workpiece and the auxiliary time such as measurement and machine tool adjustment. The workpiece can be clamped once and then processed in multiple processes. It is mainly suitable for processing complex parts such as plates, discs, molds and small shells.

The pneumatic expansion device of the vertical machining center uses pneumatic clamping, which leads to insufficient clamping force, reducing the reliability of clamping, and the expansion device is mostly assembled in one piece, which is not convenient for replacing and repairing the pneumatic parts. Therefore, a pneumatic expansion device for a vertical machining center is proposed.

Utility Model Content

The utility model aims to solve the shortcomings in the prior art and proposes a pneumatic expansion device for a vertical machining center.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic tightening device for a vertical machining center, comprising an tightening body, a fixing plate fixedly connected to the top of the tightening body, a connecting plate fixedly connected to the top of the fixing plate, a mounting plate one hingedly connected to the connecting plate, an expanding cylinder fixedly connected to the mounting plate one, a telescopic end of the expanding cylinder fixedly connected to the mounting plate two, the mounting plate two hingedly connected to an L-shaped connecting rod, a fixing block fixedly connected to the tightening body, one end of the L-shaped connecting rod hinged to the fixing block, a connecting rod hinged to the middle part of the L-shaped connecting rod, one end of the connecting rod hinged to a sliding block, a connecting rod fixedly connected to the sliding block, one end of the connecting rod fixedly connected to a clamping plate, and a clamping block fixedly connected to the clamping plate.

As a further description of the above technical solution:

A guide plate is fixedly connected to the expansion body, a limiting sliding groove is arranged on the guide plate, limiting blocks are arranged on both sides of the sliding block, and the limiting blocks are slidably connected in the limiting sliding groove.

As a further description of the above technical solution:

The bottom of the expansion body is fixedly connected with a base, the bottom of the base is provided with a disassembly plate, and the disassembly plate is provided with a mounting hole.

As a further description of the above technical solution:

A positioning hole 1 is provided at the fixed end of the expansion cylinder, and a connecting bolt 1 is connected to the internal thread of the positioning hole 1. The expansion cylinder is fixedly mounted on a mounting plate 1 through the connecting bolt 1.

As a further description of the above technical solution:

The expansion cylinder is telescopically fixedly connected with a flange plate, and the flange plate is provided with a second positioning hole, and a second connecting bolt is installed in the second positioning hole, and a connecting nut is threadedly connected to the threaded end of the second connecting bolt.

As a further description of the above technical solution:

The second mounting plate is provided with a third positioning hole, the third positioning hole matches with the second positioning hole, and the second mounting plate is fixedly connected to the flange through the second connecting bolt and the connecting nut.

As a further description of the above technical solution:

The expansion body is provided with a movable groove, and the L-shaped connecting rod moves in the movable groove.

The utility model has the following beneficial effects:

1. In the utility model, the L-shaped connecting rod is driven to move by the expansion cylinder, and the L-shaped connecting rod drives the sliding block to slide on the guide plate through the connecting rod, thereby driving the clamping plate and the clamping block to clamp the workpiece. After clamping, one side of the L-shaped connecting rod forms a straight line with the connecting rod, so that the reaction force of the sliding block on the connecting rod cannot drive the L-shaped connecting rod to move, forming a self-locking in the vertical direction, so that the clamping force of the workpiece is large and the clamping is reliable.

2. In the utility model, the expansion cylinder is mounted on the first mounting plate and the second mounting plate by bolts, so that the disassembly, replacement and maintenance of the expansion cylinder are convenient, which is beneficial to improving the maintenance efficiency of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a pneumatic expansion device for a vertical machining center proposed by the utility model;

FIG2 is a second perspective view of a pneumatic expansion device for a vertical machining center proposed by the utility model;

FIG3 is an exploded view of the connection of the expansion cylinder;

FIG. 4 is a schematic diagram of the structure on the guide plate.

Legend:

1. Expansion body; 2. Fixing plate; 3. Connecting plate; 4. Mounting plate 1; 5. Expansion cylinder; 6. Mounting plate 2; 7. L-shaped connecting rod; 8. Fixing block; 9. Connecting rod; 10. Sliding block; 11. Connecting rod; 12. Clamping plate; 13. Clamping block; 14. Limiting block; 15. Guide plate; 16. Limiting slide groove; 17. Base; 18. Disassembly plate; 19. Mounting hole; 20. Positioning hole 1; 21. Connecting bolt 1; 22. Flange; 23. Positioning hole 2; 24. Positioning hole 3; 25. Connecting bolt 2; 26. Connecting nut; 27. Movable groove.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Referring to Figures 1 to 4, an embodiment of the utility model is provided: a pneumatic expansion device for a vertical machining center, comprising an expansion body 1, a fixed plate 2 is fixedly connected to the top of the expansion body 1, a connecting plate 3 is fixedly connected to the top of the fixing plate 2, a mounting plate 4 is hingedly connected to the connecting plate 3, an expansion cylinder 5 is fixedly connected to the mounting plate 4, a telescopic end of the expansion cylinder 5 is fixedly connected to the mounting plate 2 6, the mounting plate 2 6 is hingedly connected to an L-shaped connecting rod 7, a fixing block 8 is fixedly connected to the expansion body 1, one end of the L-shaped connecting rod 7 is hingedly connected to the fixing block 8, a connecting rod 9 is hingedly connected to the middle of the L-shaped connecting rod 7, and one end of the connecting rod 9 is hingedly connected to the fixing block 8. A sliding block 10 is connected, and a connecting rod 11 is fixedly connected to the sliding block 10. A clamping plate 12 is fixedly connected to one end of the connecting rod 11, and a clamping block 13 is fixedly connected to the clamping plate 12. The L-shaped connecting rod 7 is driven to move by the expansion cylinder 5. The L-shaped connecting rod 7 drives the sliding block 10 to slide on the guide plate 15 through the connecting rod 9, thereby driving the clamping plate 12 and the clamping block 13 to clamp the workpiece. After clamping, one side of the L-shaped connecting rod 7 forms a straight line with the connecting rod 9, so that the reaction force of the sliding block 10 on the connecting rod 9 cannot drive the L-shaped connecting rod 7 to move, forming a self-locking in the vertical direction, so that the clamping force of the workpiece is large and the clamping is reliable.

A guide plate 15 is fixedly connected to the expansion body 1, and a limiting slide groove 16 is provided on the guide plate 15. Limit blocks 14 are provided on both sides of the sliding block 10, and the limit blocks 14 are slidably connected in the limiting slide groove 16. A base 17 is fixedly connected to the bottom of the expansion body 1, and a disassembly plate 18 is provided at the bottom of the base 17. A mounting hole 19 is provided on the disassembly plate 18. A positioning hole 20 is provided at the fixed end of the expansion cylinder 5, and a connecting bolt 21 is connected to the inner thread of the positioning hole 20. The expansion cylinder 5 is fixedly installed on the mounting plate 4 through the connecting bolt 21. The expansion cylinder 5 is fixedly connected to the expansion cylinder 5 with a flange 22, and the flange 2 2 is provided with a second positioning hole 23, a second connecting bolt 25 is installed in the second positioning hole 23, and the threaded end of the connecting bolt 25 is threadedly connected with a connecting nut 26, a third positioning hole 24 is provided on the mounting plate 26, the third positioning hole 24 matches the second positioning hole 23, the mounting plate 26 and the flange 22 are fixedly connected by the second connecting bolt 25 and the connecting nut 26, a movable groove 27 is provided on the expansion body 1, and the L-shaped connecting rod 7 moves in the movable groove 27, and the expansion cylinder 5 is installed on the mounting plate 1 4 and the mounting plate 2 6 by bolts, so as to facilitate the disassembly, replacement and maintenance of the expansion cylinder 5, which is beneficial to improve the maintenance efficiency of the device.

Working principle: When in use, the telescopic end of the expansion cylinder 5 drives the extension to drive one end of the L-shaped connecting rod 7 to move downward, so that the L-shaped connecting rod 7 can rotate around the connection with the fixed block 8, so that the middle part of the L-shaped connecting rod 7 drives the connecting rod 9 to move, and the connecting rod 9 drives the sliding block 10 to slide on the guide plate 15. The limit blocks 14 on both sides of the sliding block 10 slide in the limit slide groove 16 to limit the sliding block 10. The sliding block 10 drives the clamping plate 12 and the clamping block 13 to move downward through the connecting rod 11, thereby clamping the workpiece placed on the base 17. When clamping, one side of the L-shaped connecting rod 7 forms a straight line with the connecting rod 9 and the sliding block 10, so that the sliding block 10 The reaction force on the connecting rod 9 cannot drive the L-shaped connecting rod 7 to move, thereby forming a self-locking function, which makes the clamping reliable. During installation, the fixed end of the tensioning cylinder 5 is installed on the mounting plate 4 by connecting the connecting bolt 21 with the positioning hole 20, and the positioning hole 3 24 on the mounting plate 26 is matched with the positioning hole 23 on the flange 22, and then the connecting bolt 25 is installed in the positioning hole 23 and the positioning hole 3 24, and the connecting nut 26 is installed on the threaded end of the connecting bolt 25 to fix the mounting plate 26 to the flange 22, so that the tensioning cylinder 5 is installed on the device, and the device is installed on the processing equipment through the disassembly plate 18 at the bottom of the device.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A pneumatic expansion device for a vertical machining center, comprising an expansion body (1), characterized in that: the top of the expansion body (1) is fixedly connected to a fixing plate (2), the top of the fixing plate (2) is fixedly connected to a connecting plate (3), the connecting plate (3) is hingedly connected to a mounting plate 1 (4), the mounting plate 1 (4) is fixedly connected to an expansion cylinder (5), the telescopic end of the expansion cylinder (5) is fixedly connected to a mounting plate 2 (6), the mounting plate 2 (6) is hingedly connected to An L-shaped connecting rod (7) is provided, a fixing block (8) is fixedly connected to the expansion body (1), one end of the L-shaped connecting rod (7) is hinged on the fixing block (8), a connecting rod (9) is hinged at the middle of the L-shaped connecting rod (7), one end of the connecting rod (9) is hinged to a sliding block (10), a connecting rod (11) is fixedly connected to the sliding block (10), one end of the connecting rod (11) is fixedly connected to a clamping plate (12), and a clamping block (13) is fixedly connected to the clamping plate (12). 2. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: a guide plate (15) is fixedly connected to the expansion body (1), a limiting slide groove (16) is provided on the guide plate (15), and limiting blocks (14) are provided on both sides of the sliding block (10), and the limiting blocks (14) are slidably connected in the limiting slide groove (16). 3. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: the bottom of the expansion body (1) is fixedly connected to a base (17), the bottom of the base (17) is provided with a disassembly plate (18), and the disassembly plate (18) is provided with a mounting hole (19). 4. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: a positioning hole (20) is provided at the fixed end of the expansion cylinder (5), and a connecting bolt (21) is connected to the internal thread of the positioning hole (20), and the expansion cylinder (5) is fixedly mounted on a mounting plate (4) by means of a connecting bolt (21). 5. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: the expansion cylinder (5) is telescopically fixedly connected with a flange (22), the flange (22) is provided with a second positioning hole (23), a second connecting bolt (25) is installed in the second positioning hole (23), and the threaded end of the second connecting bolt (25) is threadedly connected with a connecting nut (26). 6. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: a third positioning hole (24) is provided on the second mounting plate (6), the third positioning hole (24) matches with the second positioning hole (23), and the second mounting plate (6) and the flange (22) are fixedly connected by connecting bolts (25) and connecting nuts (26). 7. A pneumatic expansion device for a vertical machining center according to claim 1, characterized in that a movable groove (27) is provided on the expansion body (1), and the L-shaped connecting rod (7) moves in the movable groove (27).