A vertical fixture for machining center

Abstract

The utility model provides a vertical fixture for machining center, including support disc, the bottom edge of support disc is equipped with a plurality of installation legs, the top of support disc is equipped with the placement platform in parallel and coaxial, and the edge of placement platform is connected through the support leg with support disc, the top edge of support disc is equipped with a plurality of support arms of rotation, and support arm top stretches to the top of placement platform, and support arm top is equipped with the curved portion that stretches to the center of placement platform, is equipped with drive arrangement at the center of support disc, and drive arrangement is located below placement platform and is connected with each support arm, and under the drive of drive arrangement makes a plurality of support arms contract simultaneously or open simultaneously. When the utility model is in use, when telescopic mechanism is elevated upward, each curved portion is in the open state, the workpiece that waits for processing can be placed on the placement platform at this moment, when telescopic mechanism drops, and each curved portion is moved to the center of placement platform by telescopic mechanism, and each clamping seat is allowed to be pressed on the workpiece and is clamped.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a vertical fixture for machining centers. Background Technology

[0002] A chuck is a mechanical device used on a machine tool to clamp and position workpieces. It is mainly used to hold workpieces to ensure stability and accuracy during the machining process. Its core function is to achieve automatic centering or eccentric clamping of the workpiece by radially moving the movable jaws evenly distributed on the chuck body.

[0003] For example, three-jaw and four-jaw chucks are the most common fixtures used in machining centers. When a three-jaw or four-jaw chuck is installed vertically, its top slot is exposed. During machining, debris can fall into it, causing blockage of the jaws and slides. Moreover, three-jaw and four-jaw chucks are precision-machined components, resulting in high prices and maintenance costs. Therefore, we propose a vertical fixture for machining centers. Utility Model Content

[0004] This utility model provides a vertical fixture for machining centers, which has the advantages of strong clamping force and convenient maintenance, and solves the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: A vertical fixture for a machining center includes a support plate, a plurality of mounting legs on the bottom edge of the support plate, a placement table parallel and coaxially arranged above the support plate, the edge of the placement table being connected to the support plate through the support legs, a plurality of support arms rotatably arranged on the top edge of the support plate, the top of the support arms extending above the placement table, the top of the support arms having a curved portion extending toward the center of the placement table, a driving device being arranged at the center of the support plate, the driving device being located below the placement table and connected to each support arm, the multiple support arms being simultaneously contracted or simultaneously extended under the drive of the driving device.

[0006] Preferably, there is a certain distance between the curved part and the placement platform.

[0007] Preferably, a clamping seat is provided at the end of the bent portion.

[0008] Preferably, the drive device includes a telescopic mechanism, which is coaxially mounted below the support plate, with the telescopic shaft of the telescopic mechanism extending above the support plate. A connecting seat is coaxially mounted on the top of the telescopic shaft, and multiple strip seats corresponding to the support arms are mounted on the edge of the connecting seat. All strip seats extend toward the support arm, and each strip seat has a strip-shaped opening at its end. A connecting arm extending toward the strip seat is connected at the middle position of each support arm, and each connecting arm has a strip-shaped groove corresponding to the strip-shaped opening at its end. The connecting arm is placed inside the strip-shaped opening, and the end of the connecting arm away from the connecting seat is connected to the strip-shaped opening via a shaft, which can slide inside the strip-shaped opening.

[0009] Preferably, the bottom of the support leg is provided with a connecting seat, which is detachably connected to the support plate.

[0010] Preferably, the mounting leg has a support at its bottom.

[0011] Compared with existing technologies, this utility model, when the telescopic mechanism rises, the various curved parts are in an open state, allowing the workpiece to be processed to be placed on the placement table. When the telescopic mechanism descends, it drives each curved part towards the center of the placement table, causing the clamping seats to press against the workpiece for clamping. Multiple clamping seats can clamp the workpiece simultaneously with a large clamping force. Compared to three-jaw or four-jaw chucks, this vertical fixture has a simpler structure and is easier to maintain. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the bottom structure of this utility model.

[0016] In the diagram: 1. Support plate; 2. Support arm; 3. Connecting arm; 4. Bend; 5. Placement platform; 6. Clamping seat; 7. Support leg; 8. Telescopic mechanism; 9. Mounting leg; 10. Strip groove; 11. Connecting seat; 12. Strip seat; 13. Strip opening; 14. Fixing seat; 15. Support. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1 to 3This utility model provides a technical solution: a vertical fixture for a machining center, including a support plate 1, a plurality of mounting legs 9 on the bottom edge of the support plate 1, and a support 15 at the bottom of the mounting legs 9. In actual use, the mounting legs 9 can support the support plate 1, so that there is a certain distance between the support plate 1 and the machine tool slot, and the support 15 at the bottom of the mounting legs 9 can be fastened to the slot with bolts.

[0019] A placement platform 5 is provided parallel above the support plate 1. The placement platform 5 is coaxial with the support plate 1. The edge of the placement platform 5 is connected to the support plate 1 through a support leg 7. Specifically, a fixing seat 14 is provided at the bottom of the support leg 7. The fixing seat 14 is detachably connected to the support plate 1, that is, the fixing seat 14 is fastened to the support plate 1 by bolts. The top edge of the support plate 1 is provided with multiple support arms 2, each support arm 2 extending above the placement platform 5. The top of the support arm 2 is provided with a curved part 4 extending toward the center of the placement platform 5. There is a certain distance between the curved part 4 and the placement platform 5, and a clamping seat 6 is provided at the end of the curved part 4.

[0020] A drive device is provided at the center of the support plate 1. The drive device is located below the placement platform 5 and connected to each support arm 2. Under the drive of the drive device, multiple support arms 2 can retract or expand simultaneously. like Figure 2 As shown, the specific structure of the drive device includes a telescopic mechanism 8, which can be an electric cylinder, a hydraulic cylinder, or a pneumatic cylinder. In actual use, a pneumatic cylinder is preferred for the telescopic mechanism 8 because it does not require an oil circuit and has a large driving force. The telescopic mechanism 8 is coaxially installed below the support plate 1. The telescopic shaft of the telescopic mechanism 8 extends above the support plate 1, and a connecting seat 11 is coaxially mounted on the top of the telescopic shaft, such as... Figure 2 As shown, multiple strip seats 12 corresponding to the support arm 2 are installed on the edge of the connecting seat 11. Each strip seat 12 extends towards the support arm 2, and each strip seat 12 has a strip opening 13 at its end. Corresponding to each strip opening 13, a connecting arm 3 extending towards the strip seat 12 is connected at the middle position of the support arm 2. Each connecting arm 3 has a strip groove 10 corresponding to the strip opening at its end. The connecting arm 3 is placed in the strip opening 13, and the end of the connecting arm 3 away from the connecting seat 11 is connected to the strip opening 13 by a shaft, which can slide within the strip opening 13. Therefore, when the telescopic mechanism 8 rises, the strip seat 12 will rise and fall together with the connecting seat 11, so that the connecting seat 11 can drive the connecting arm 3 to move up and down. Since the connecting arm 3 is connected to the support arm 2, and the bottom of the support arm 2 is rotatably connected to the support plate 1, the end strip opening 13 of the connecting arm 3 slides along the axis, so that each curved part 4 is in an open state. At this time, the workpiece to be processed can be placed on the placement table 5. When the telescopic mechanism 8 descends, it drives each of the curved parts 4 to move towards the center of the placement table 5, thereby causing each clamping seat 6 to press against the workpiece and clamp it in place. Multiple clamping seats 6 can clamp the workpiece simultaneously with a large clamping force, and the synchronous movement of multiple clamping seats 6 can position the workpiece, that is, when the clamping seats 6 clamp the workpiece, the workpiece can be automatically positioned.

[0021] Based on the above embodiments, it should be further noted that the number of support arms 2 is at least two, and the fixture proposed in this application not only fixes the workpiece, but also has a simple structure and is easy to maintain. Maintenance only requires disassembling the placement platform 5. The appearance after disassembling the placement platform 5 is as follows. Figure 2 As shown.

[0022] Based on the above embodiments, a pressure sensor is installed at at least one end of the clamping seat 6. The pressure sensor is used to sense the pressure of the clamping seat 6 on the surface of the workpiece, so as to avoid excessive pressure on the clamping seat 6 and damage to the workpiece. The pressure sensor is connected to the machine tool system.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical fixture for a machining center, comprising a support plate (1), wherein the bottom edge of the support plate (1) is provided with a plurality of mounting legs (9), characterized in that, A placement platform (5) is provided parallel and coaxially above the support plate (1), and the edge of the placement platform (5) is connected to the support plate (1) through a support leg (7); The top edge of the support plate (1) is provided with multiple support arms (2), the top of the support arms (2) extends above the placement platform (5), and the top of the support arms (2) is provided with a curved part (4) extending toward the center of the placement platform (5). A drive device is provided at the center of the support plate (1). The drive device is located below the placement platform (5) and connected to each support arm (2). Under the drive of the drive device, multiple support arms (2) are simultaneously contracted or simultaneously extended.

2. The vertical jig for a machining center according to claim 1, wherein There is a certain gap between the curved part (4) and the placement platform (5).

3. The vertical jig for machining center according to claim 2, wherein The end of the curved part (4) is provided with a clamping seat (6).

4. The vertical fixture for a machining center as described in claim 1, characterized in that, The drive device includes a telescopic mechanism (8), which is coaxially mounted below the support plate (1), and the telescopic shaft of the telescopic mechanism (8) extends above the support plate (1). A connecting seat (11) is coaxially installed on the top of the telescopic shaft. Multiple strip seats (12) corresponding to the support arm (2) are installed on the edge of the connecting seat (11). The strip seats (12) all extend towards the support arm (2), and each strip seat (12) has a strip opening (13) at its end. A connecting arm (3) extending toward the strip seat (12) is connected at the middle position of the support arm (2). The end of the connecting arm (3) is provided with a strip groove (10) corresponding to the strip opening. The connecting arm (3) is placed in the strip opening (13), and the end of the connecting arm (3) away from the connecting seat (11) is connected to the strip opening (13) by a shaft. The shaft can slide in the strip opening (13).

5. The vertical fixture for machining center according to claim 1, wherein The bottom of the support leg (7) is provided with a fixed seat (14), which is detachably connected to the support plate (1).

6. The vertical fixture for machining center according to claim 1, wherein The bottom of the mounting leg (9) is provided with a support (15).

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