Flexible clamp for lathe robot

Abstract

The utility model discloses a flexible clamp for a lathe robot, which belongs to the field of clamps and comprises a mounting frame, a first air cylinder is fixed on the mounting frame, a movable shell is fixed at one end of an extension rod of the first air cylinder, a second air cylinder is fixed at the top of the movable shell, and a clamping plate capable of vertically lifting is fixed at one end of an extension rod of the second air cylinder. A flexible clamp assembly is arranged on the movable shell and comprises a movable plate arranged in the movable shell, a first air bag is fixed to the side face of the movable plate, and a third air cylinder used for driving the movable plate to move is installed on the movable shell. By means of mutual matching of the second air cylinder, the clamping plate and the flexible clamp assembly, the two modes of flexible clamping and rigid clamping can be rapidly switched, and the problems that the switching process is tedious and complex, a large amount of manpower and time cost is consumed, the clamp positioning precision is prone to decline due to frequent replacement, and the clamping efficiency is high are solved. And the continuity and the stability of the whole machining process are further influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially to a flexible fixture for lathe robot. BACKGROUND

[0002] In the modern mechanical processing field, with the rapid development of lathe robot automation processing technology, the fixture as the key component of fixing workpiece and ensuring processing precision, the performance of which directly influences production efficiency and product quality, the traditional lathe fixture can be roughly divided into two categories of hard fixture and flexible fixture, and they have certain limitations in practical application.

[0003] Among them, the flexible fixture can adjust the clamping state according to the workpiece shape by virtue of the flexible component, and fix the special-shaped workpiece gently and stably, effectively reduce the risk of workpiece damage, and expand the range of workpieces that can be processed by the lathe robot, but the existing flexible fixture has a serious defect in the use process, that is, it cannot be quickly and flexibly used with the hard fixture, in the actual production line, the workpiece type is not single and unchangeable, and it is often necessary to alternately use the hard fixture and the flexible fixture according to different processes or workpiece batches in the same processing flow, for example, in the processing of automobile engine parts, the precision requirement of part of rough machining process is relatively low, the use of hard fixture can improve the clamping speed and improve the processing efficiency, and when entering the finishing stage, the complex special-shaped contour needs to be switched to the flexible fixture to ensure the processing precision, but due to the poor compatibility of the design architecture and control system of the existing flexible fixture with the hard fixture, the switching process is complicated, not only consumes a lot of manpower and time cost, but also is easy to cause the positioning accuracy of the fixture to decrease due to frequent replacement, and further influence the continuity and stability of the whole processing process. SUMMARY

[0004] The utility model aims at solving the problems in the prior art that the design architecture and control system of the existing flexible fixture have poor compatibility with the hard fixture, the switching process is complicated, not only consumes a lot of manpower and time cost, but also is easy to cause the positioning accuracy of the fixture to decrease due to frequent replacement, and further influence the continuity and stability of the whole processing process, and proposes a flexible fixture for lathe robot.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A flexible clamp for lathe robot, comprising a mounting frame, a cylinder one is fixed on the mounting frame, a moving shell is fixed on one end of the cylinder one, a cylinder two is fixed on the top of the moving shell, a vertically liftable clamping plate is fixed on one end of the cylinder two, a flexible clamp assembly is arranged on the moving shell, the flexible clamp assembly comprises a moving plate arranged in the moving shell, a gas bag one is fixed on the side of the moving plate, and a cylinder three for driving the moving plate to move is arranged on the moving shell.

[0007] Preferably, the flexible clamp assembly comprises a sliding block fixed on the bottom of the moving plate, the sliding block is in sliding connection with the moving shell, a falling prevention plate is fixed on the bottom end of the sliding block, and a gas bag two is fixed on the falling prevention plate.

[0008] Preferably, an air inlet assembly is arranged on the moving shell, the air inlet assembly comprises a connecting block fixed on the clamping plate, the connecting block is located above the gas bag two, a piston rod is fixed on the top of the connecting block, and a piston cylinder is fixed on the top wall of the mounting frame.

[0009] Preferably, the air inlet assembly further comprises a piston disc fixed on the top end of the piston rod, and the piston disc slides in the piston cylinder.

[0010] Preferably, the air inlet assembly further comprises a first hose in communication with the piston cylinder, and one end of the first hose away from the piston cylinder is in communication with the gas bag one.

[0011] Preferably, the air inlet assembly further comprises a second hose in communication with the first hose, and one end of the second hose away from the first hose is in communication with the gas bag two.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. Through the cooperation between the cylinder two, the clamping plate and the flexible clamp assembly, the flexible clamping and the hard clamping can be quickly switched, the switching process is avoided to be complicated, a large amount of manpower and time cost are saved, the clamping positioning precision is prevented from being reduced due to frequent replacement, and the continuity and stability of the whole machining process are improved.

[0014] 2. Through the arrangement of the air inlet assembly, the gas bag one can be inflated to complete the flexible clamping of the workpiece, the gas bag two can be expanded, the workpiece can be prevented from falling during clamping, and the protection performance of the workpiece is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the flexible clamp for lathe robot is provided in the utility model;

[0016] Figure 2 A moving shell internal structure schematic view of the flexible clamp for lathe robot is provided in the utility model;

[0017] Figure 3 A piston cylinder internal structure schematic view of the flexible fixture for lathe robot is provided in the utility model.

[0018] Figure 4 A piston cylinder internal structure schematic view of the flexible fixture for lathe robot is provided in the utility model. Figure 3 The structure amplification schematic view of A place in the middle.

[0019] In the drawing: 1, mounting frame;21, cylinder one;2, moving shell;3, cylinder two;4, clamping plate;51, cylinder three;52, moving plate;53, air bag one;54, sliding block;55, anti-falling plate;56, air bag two;61, connecting block;62, piston rod;63, piston cylinder;64, piston disc;65, hose one;66, hose two. Specific implementation

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Embodiment one

[0022] Refer to Figures 1-4 A flexible fixture for lathe robot, including mounting frame 1, the fixed cylinder one 21 of mounting frame 1, the one end fixed movable shell 2 of cylinder one 21 extension rod, the top of movable shell 2 is fixed with cylinder two 3, the one end fixed with vertically liftable clamping plate 4 of cylinder two 3 extension rod, movable shell 2 is provided with flexible fixture assembly, and flexible fixture assembly includes the moving plate 52 arranged in movable shell 2, the side of moving plate 52 is fixed with air bag one 53, and movable shell 2 is installed for the cylinder three 51 for driving moving plate 52 to move.

[0023] Further, the flexible fixture assembly includes the sliding block 54 fixed in the bottom of moving plate 52, and the sliding block 54 is slidably connected with movable shell 2, and the bottom end of sliding block 54 is fixed with anti-falling plate 55, and the anti-falling plate 55 is fixed with air bag two 56.

[0024] In use, the mounting frame 1 is connected with the moving end of the lathe robot, when the machining process enters the process suitable for hard clamping, such as rough machining of some regular-shaped workpieces with relatively low precision requirements, the cylinder two 3 is started, the extension rod of the cylinder two 3 is extended, the clamping plate 4 is driven to move vertically downward, the clamping plate 4 quickly and stably approaches the workpiece on the mounting frame 1 due to its hard material and precisely designed structure, until it closely adheres to the surface of the workpiece, and the workpiece is firmly fixed in the predetermined machining position by using the rigid clamping force formed between the clamping plate 4 and the mounting frame 1, so that displacement and shaking of the workpiece during rough machining operations such as powerful cutting and high-speed rotation of the lathe robot are avoided, and the smooth machining is ensured. This hard clamping mode fully plays the advantage of fast clamping speed and effectively improves the machining efficiency.

[0025] When the machining process is converted and needs to be switched to flexible clamping for special-shaped workpieces or entering the finishing stage, first of all, the extension rod of the cylinder two 3 is retracted to lift the clamping plate 4 to a certain height to provide space for the action of the flexible clamp assembly.

[0026] Then, the cylinder three 51 is started to drive the moving plate 52 to move in the moving shell 2, and the air bag one 53 fixed on the side of the moving plate 52 moves synchronously, since the air bag one 53 has the flexible deformable characteristic, it can adaptively adjust its shape according to the irregular contour shape of the workpiece during approaching the side surface of the workpiece, so as to ensure close adhesion with the side surface of the workpiece and provide soft and uniform lateral supporting force to preliminarily stabilize the workpiece.

[0027] At the same time, the slider 54 at the bottom of the moving plate 52 moves together with the moving plate 52 to drive the anti-falling plate 55 and the air bag two 56 thereon to approach the bottom surface of the workpiece, and the air bag two 56 also adaptively adheres to the bottom surface of the workpiece to stably support the workpiece from below, and cooperates with the air bag one 53 to softly fix the special-shaped workpiece in all directions, effectively avoids damage to the workpiece caused by improper clamping during finishing process, and ensures the machining precision.

[0028] Based on the first embodiment, the second embodiment is provided:

[0029] Referring to Figures 1-4 Further, the moving shell 2 is provided with an air inlet assembly, the air inlet assembly comprises a connecting block 61 fixed on the clamping plate 4, the connecting block 61 is located above the air bag two 56, a piston rod 62 is fixed on the top of the connecting block 61, and a piston cylinder 63 is fixed on the top wall of the mounting frame 1.

[0030] Further, the air inlet assembly further comprises a piston disc 64 fixed on the top end of the piston rod 62, and the piston disc 64 slides in the piston cylinder 63.

[0031] Further, the air inlet assembly further comprises a first hose 65 communicated with the piston cylinder 63, and an end of the first hose 65 away from the piston cylinder 63 is communicated with the air bag 53.

[0032] Further, the air inlet assembly further comprises a second hose 66 communicated with the first hose 65, and an end of the second hose 66 away from the first hose 65 is communicated with the air bag 56.

[0033] In the flexible clamping mode, when the pressing action of the clamping plate 4 is started, the air inlet assembly starts to work, the connecting block 61 fixed on the clamping plate 4 moves upward synchronously with the clamping plate 4, and the piston rod 62 at the top of the connecting block 61 drives the piston disc 64 to slide upward in the piston cylinder 63.

[0034] With the upward movement of the piston disc 64, since the piston cylinder 63 is communicated with the air bag 53 through the first hose 65, the inhaled air is accurately guided into the air bag 53 through the first hose 65, so that the air bag 53 is inflated, and the lateral clamping force on the workpiece is enhanced.

[0035] At the same time, since the first hose 65 is communicated with the air bag 56 through the second hose 66, part of the air will also flow into the air bag 56 through the second hose 66, so that the air bag 56 is inflated, and the supporting effect on the bottom surface of the workpiece is further enhanced, not only the flexible clamping of the workpiece is realized, but also the workpiece is effectively prevented from falling due to vibration, uneven force and other factors in the machining process through the inflation of the air bag 56, so that the stability and safety of the machining process are comprehensively ensured.

[0036] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A flexible fixture for lathe robot comprising a mounting frame (1), characterized in that, The mounting frame (1) is fixed with a cylinder (21), one end of the cylinder (21) is fixed with a moving shell (2), the top of the moving shell (2) is fixed with a cylinder (3), one end of the cylinder (3) is fixed with a vertically lifting clamping plate (4), the moving shell (2) is provided with a flexible clamp assembly, the flexible clamp assembly comprises a moving plate (52) arranged in the moving shell (2), the side of the moving plate (52) is fixed with a gas bag (53), the moving shell (2) is provided with a cylinder (51) for driving the moving plate (52) to move.

2. The flexible fixture for a lathe robot according to claim 1, wherein The flexible clamp assembly comprises a sliding block (54) fixed on the bottom of the moving plate (52), the sliding block (54) is in sliding connection with the moving shell (2), the bottom end of the sliding block (54) is fixed with an anti-falling plate (55), the anti-falling plate (55) is fixed with a gas bag (56).

3. The flexible fixture for a lathe robot according to claim 1, wherein The moving shell (2) is provided with an air inlet assembly, the air inlet assembly comprises a connecting block (61) fixed on the clamping plate (4), the connecting block (61) is located above the gas bag (56), the top of the connecting block (61) is fixed with a piston rod (62), the top wall of the mounting frame (1) is fixed with a piston cylinder (63).

4. The flexible fixture for a lathe robot according to claim 3, wherein The air inlet assembly further comprises a piston disc (64) fixed on the top end of the piston rod (62), the piston disc (64) slides in the piston cylinder (63).

5. The flexible fixture for a lathe robot according to claim 3, wherein The air inlet assembly further comprises a hose (65) in communication with the piston cylinder (63), one end of the hose (65) away from the piston cylinder (63) is in communication with the gas bag (53).

6. A flexible fixture for a lathe robot according to claim 5, characterized in that The air inlet assembly further comprises a hose (66) in communication with the hose (65), one end of the hose (66) away from the hose (65) is in communication with the gas bag (56).

Images