Fool-proof clamping device for CNC machining center

Abstract

The utility model relates to a fool-proof clamping device for a CNC machining center. The fool-proof clamping device comprises a workbench; the locking air cylinders are arranged on the workbench and used for clamping workpieces placed on the workbench; the air pressure conversion valve is provided with a plurality of communicated ports, one port is provided with an air inlet main pipe communicated with the port, and the other ports are provided with air inlet branch pipes communicated with the ports; the air inlet branch pipe is communicated with the locking cylinder; the air pressure sensor is arranged on the air inlet branch pipe and used for detecting the air pressure in the air inlet branch pipe; the controller is electrically connected with the air pressure sensor; the electromagnetic valve is arranged on the air inlet branch pipe and electrically connected with the controller, signals are fed back to the controller through the air pressure sensor, and the controller controls the electromagnetic valve to control the air inlet branch pipe to be connected or disconnected. Compared with the prior art, the electromagnetic valve is controlled by utilizing a signal fed back to the controller by the air pressure sensor communicated with the air inlet branch pipe, so that the on-off of the air inlet branch pipe is controlled, and the collision accident is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a fool-proof clamping device for a CNC machining center. Background Art

[0002] CNC machining usually refers to computer digital controlled precision machining, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc., and the machining center is a processing machine that integrates multiple processing methods. CNC machining has a wide range of applications in many fields.

[0003] During the processing of CNC machining centers, clamping devices are needed to clamp the workpiece to be processed, so as to facilitate CNC processing. Existing clamping devices are mostly pneumatic clamps. Compared with the original product, the time for tightening and loosening the hand-tightened pressure plate screws is more than 20 seconds, and now the pneumatic clamps can be completed in 1 second. The problem after the speed is increased is that the operator forgets to turn the air flow hand valve, resulting in frequent collision accidents. After the collision, it affects the equipment accuracy, fixture accuracy, tooling, debugging, production cycle, etc. Utility Model Content

[0004] The purpose of the utility model is to provide a fool-proof clamping device for a CNC machining center in order to overcome at least one of the defects of the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A foolproof clamping device for a CNC machining center, comprising:

[0007] Workbench;

[0008] A plurality of locking cylinders provided on the workbench are used to clamp the workpiece placed on the workbench;

[0009] A pneumatic steering valve, which is provided with a plurality of interconnected ports, one of which is connected to an intake manifold connected thereto, and the remaining ports are provided with intake branch pipes connected thereto; the intake branch pipes are connected to a locking cylinder;

[0010] An air pressure sensor is provided on the intake branch pipe and is used to detect the air pressure in the intake branch pipe;

[0011] A controller electrically connected to the air pressure sensor;

[0012] The solenoid valve arranged on the intake branch pipe is electrically connected to the controller, and the signal fed back to the controller by the air pressure sensor controls the on and off of the solenoid valve, that is, the controller controls the on and off of the intake branch pipe by controlling the solenoid valve.

[0013] Furthermore, a clamping block rotatably connected to the end of the locking cylinder is provided.

[0014] Furthermore, there are at least two locking cylinders.

[0015] Furthermore, there are three locking cylinders.

[0016] Furthermore, the workbench is provided with a plurality of support columns for supporting the products to be processed.

[0017] Furthermore, the support column is perpendicular to the workbench.

[0018] Furthermore, the locking cylinder is fixedly connected to the workbench.

[0019] Furthermore, the locking cylinder is threadedly connected to the workbench.

[0020] Furthermore, an air path for connecting the two adjacent locking cylinders is provided between the two adjacent locking cylinders.

[0021] Furthermore, the air pressure sensor is provided with a switching handle.

[0022] Compared with the prior art, the utility model provides a fool-proof clamping device for a CNC machining center, which utilizes the signal fed back to the controller by the air pressure sensor connected to the intake branch pipe. The controller controls the on-off of the intake branch pipe by controlling the solenoid valve. That is, when the air pressure sensor senses that the pressure of the pipeline between the air pressure steering valve and the solenoid valve is less than 0.2Mpa, the solenoid valve is closed, and the gas cannot enter the locking cylinder through the intake branch pipe. The staff cannot start the locking cylinder by turning the air flow manual valve. When the air pressure sensor senses that the pressure of the pipeline between the air pressure steering valve and the solenoid valve is greater than 0.2Mpa, the solenoid valve opens, the intake branch pipe is connected to the air flow manual valve, and the locking cylinder can be started by turning the air flow manual valve, thereby avoiding the occurrence of a collision accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a foolproof clamping device for a CNC machining center in an embodiment;

[0024] As shown in the figure: 1-air pressure steering valve; 2-workbench; 3-intake branch pipe; 4-air pressure sensor; 5-start switch; 6-controller; 7-support column; 8-locking cylinder; 9-clamping block; 10-intake main pipe; 11-solenoid valve. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0026] A foolproof clamping device for a CNC machining center, comprising:

[0027] Workbench 2;

[0028] A plurality of locking cylinders 8 provided on the workbench;

[0029] The air pressure steering valve 1 is provided with a plurality of interconnected ports, one of which is connected to an intake manifold connected thereto, and the remaining ports are provided with intake branch pipes 3 connected thereto; the intake branch pipe 3 is connected to a locking cylinder 8; an air pressure sensor 4 is provided on the intake branch pipe 3 and is used to detect the air pressure in the intake branch pipe 3;

[0030] The controller 6 is electrically connected to the air pressure sensor 4; the solenoid valve 11 provided on the intake branch pipe 3 is electrically connected to the controller 6, and the signal fed back to the controller 6 by the air pressure sensor 4 further controls the on-off of the solenoid valve 11, that is, the controller 6 controls the on-off of the intake branch pipe 3 by controlling the solenoid valve 11.

[0031] In one embodiment of the present invention, a clamping block 9 rotatably connected to the end of the locking cylinder 8 is provided.

[0032] In one embodiment of the present invention, there are at least two locking cylinders 8. Preferably, there are three locking cylinders 8.

[0033] In an embodiment of the present invention, a plurality of support columns 7 for supporting the products to be processed are disposed on the workbench 2 ; the support columns 7 are perpendicular to the workbench 2 .

[0034] In one embodiment of the present invention, the locking cylinder 8 is fixedly connected to the workbench, preferably by threaded connection.

[0035] In one embodiment of the present invention, an air path for connecting the adjacent locking cylinders 8 is provided between the two.

[0036] In one embodiment of the present utility model, the air pressure sensor 4 is provided with a switching handle.

[0037] Example 1

[0038] See Figure 1 , a foolproof clamping device for a CNC machining center, comprising:

[0039] Workbench 2;

[0040] A plurality of locking cylinders 8 provided on the workbench are used to clamp the workpiece placed on the workbench 2;

[0041] The air pressure steering valve 1 is provided with a plurality of interconnected ports, one of which is connected to an intake manifold, and the other ports are connected to intake branches 3; the intake branches 3 are connected to a locking cylinder 8;

[0042] An air pressure sensor 4 is arranged on the intake branch pipe 3 and is used to detect the air pressure in the intake branch pipe 3; a controller 6 is electrically connected to the air pressure sensor 4; an electromagnetic valve 11 is arranged on the intake branch pipe 3 and is electrically connected to the controller 6, and the signal fed back to the controller 6 by the air pressure sensor 4 controls the on and off of the electromagnetic valve 11, that is, the controller 6 controls the on and off of the intake branch pipe 3 by controlling the electromagnetic valve 11.

[0043] In this embodiment, a clamping block 9 rotatably connected to the end of the locking cylinder 8 is provided.

[0044] In this embodiment, there are three locking cylinders 8.

[0045] In this embodiment, a plurality of support columns 7 for supporting the products to be processed are disposed on the workbench 2 ; the support columns 7 are perpendicular to the workbench 2 .

[0046] In this embodiment, the locking cylinder 8 is threadedly connected to the workbench.

[0047] In this embodiment, an air path for connecting the adjacent locking cylinders 8 is provided between the two.

[0048] In this embodiment, the air pressure sensor 4 is provided with a switching handle.

[0049] Working principle:

[0050] The fool-proof clamping device for the CNC machining center of the present embodiment utilizes the signal fed back to the controller 6 by the air pressure sensor 4 connected to the air intake branch pipe 3. The controller 6 controls the on-off of the air intake branch pipe 3 by controlling the solenoid valve 11. That is, when the air pressure sensor 4 senses that the pressure of the pipeline between the air pressure steering valve 1 and the solenoid valve 11 is less than 0.2Mpa, the solenoid valve 11 is closed, and the gas cannot enter the locking cylinder 8 through the air intake branch pipe 3. The staff cannot start the locking cylinder 8 by turning the air flow manual valve 1. When the air pressure sensor 4 senses that the pressure of the pipeline between the air pressure steering valve 1 and the solenoid valve 11 is greater than 0.2Mpa, the solenoid valve 11 is opened, the air intake branch pipe 3 is connected to the air flow manual valve 1, and the locking cylinder 8 can be started by turning the air flow manual valve 1, thereby avoiding the occurrence of a collision accident.

[0051] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A foolproof clamping device for a CNC machining center, characterized in that: include: Workbench (2); A plurality of locking cylinders (8) arranged on the workbench, used for clamping a workpiece placed on the workbench (2); A pneumatic steering valve (1) is provided with a plurality of interconnected ports, one of which is connected to an intake manifold (10) connected thereto, and the remaining ports are provided with intake branch pipes (3) connected thereto; the intake branch pipes (3) are connected to a locking cylinder (8); An air pressure sensor (4) is arranged on the air intake branch pipe (3) and is used to detect the air pressure in the air intake branch pipe (3); A controller (6) electrically connected to the air pressure sensor (4); The solenoid valve (11) disposed on the air intake branch pipe (3) is electrically connected to the controller (6) and controls the on and off of the solenoid valve (11) by feeding back a signal to the controller (6) via the air pressure sensor (4).

2. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: The end of the locking cylinder (8) is provided with a pressing block (9) rotatably connected thereto.

3. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: There are at least two locking cylinders (8).

4. A foolproof clamping device for a CNC machining center according to claim 1 or 3, characterized in that: There are three locking cylinders (8).

5. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: The workbench (2) is provided with a plurality of support columns (7) for supporting the products to be processed.

6. The foolproof clamping device for a CNC machining center according to claim 5, characterized in that: The support column (7) is perpendicular to the workbench (2).

7. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: The locking cylinder (8) is fixedly connected to the workbench.

8. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: The locking cylinder (8) is threadedly connected to the workbench.

9. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: An air path for connecting the adjacent locking cylinders (8) is provided between the two.

10. The foolproof clamping device for a CNC machining center according to claim 1, characterized in that: The air pressure sensor (4) is provided with a switching handle.

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