Detection device for detecting clamping degree of rotating shaft of machine tool

Abstract

The utility model discloses a detection device for detecting the clamping degree of a rotating shaft of a machine tool, which comprises a connecting plate, a signal oil cylinder arranged on the connecting plate, and a switch bracket arranged on one side of the signal oil cylinder, an oil inlet and an oil outlet are formed in the signal oil cylinder, a piston rod is installed in the signal oil cylinder, a proximity switch is installed on the switch support, and the output end of the piston rod is matched with the switch. A positioning pin type detection device is installed at the synchronous extending end of a clamping oil cylinder and a loosening signal oil cylinder and can be switched on and off after being in synchronous contact with a switch, and through parallel connection of clamping mechanism pipelines, on the premise of the same pressure and the same pipe diameter, the oil inlet amount of the signal oil cylinder is the same as that of a clamping mechanism; the clamping state of the clamping mechanism is judged by detecting the extension state of the signal oil cylinder. The device is simple and convenient in mechanism, convenient to install, simple to operate and high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing functional components of machine tools, in particular to a detection device for detecting the clamping degree of a rotary shaft of a machine tool. Background Art

[0002] At present, the rotary shafts of machine tools mainly include the rotary tables of machine tools, the swinging rotary shafts A-axis or B-axis. In order to meet the use and safety requirements of machine tools, the rotary shafts of machine tools generally need to adopt a clamping unit to realize the clamping of the rotary components at any position.

[0003] At present, for the rotary shafts with high requirements for clamping force, the clamping structure mainly adopts hydraulic clamping. The hydraulic clamping structure has a ring-holding type and a brake pad type, and the clamping and loosening of the rotary shaft are realized through a hydraulic cylinder or a hydraulic motor. When the hydraulic oil has an oil-passing action, it is considered that the clamping mechanism has moved in place. However, since this clamping method cannot directly or indirectly detect the actual clamping state, the stability and reliability of the clamping state cannot be ensured. Summary of the Utility Model

[0004] Aiming at the above defects or deficiencies, the purpose of the utility model is to provide a detection device for detecting the clamping degree of a rotary shaft of a machine tool.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A detection device for detecting the clamping degree of a rotary shaft of a machine tool, comprising: a connecting plate, on which a signal oil cylinder is installed, and a switch bracket arranged on one side of the signal oil cylinder; an oil inlet and an oil outlet are arranged on the signal oil cylinder, a piston rod is installed in the signal oil cylinder, a proximity switch is installed on the switch bracket, and the output end of the piston rod is matched with the switch and contacts the switch when the piston rod outputs motion.

[0007] The signal oil cylinder includes a front cylinder body and a rear cylinder body installed on the connecting plate, and the front cylinder body and the rear cylinder body are hermetically connected.

[0008] The front cylinder body and the rear cylinder body are connected through a multi-stage table structure.

[0009] A first sealing ring is installed on the mounting surface of the front cylinder body and the rear cylinder body.

[0010] The piston rod is installed in the front cylinder body and the rear cylinder body, and a second sealing ring and a third sealing ring are respectively installed in the front cylinder body and the rear cylinder body.

[0011] A U-shaped hole matching the piston rod is arranged on the switch bracket, and the switch is arranged in the U-shaped hole.

[0012] The switch is a proximity switch.

[0013] The oil inlet is arranged at the end of the rear cylinder block, and the oil outlet is arranged on the side wall of the front cylinder block.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model provides a detection device for detecting the clamping degree of the rotating shaft of a machine tool. Through the design method of the parallel pipeline of the clamping mechanism, a detection device with a positioning pin is installed at the synchronous extension end of the signal cylinder of the clamping oil cylinder when it is relaxed. A hydraulic drive plunger rod is provided, which can be switched after being in synchronous contact with the switch. By paralleling the pipelines of the clamping mechanism, on the premise of the same pressure and the same pipe diameter, the oil intake of the signal cylinder and the clamping mechanism is the same. By detecting the elongation state of the signal cylinder, the clamping state of the clamping mechanism can be judged, and the situation can be understood in real time. The device of the present utility model has a simple and convenient mechanism, small difficulty in machining parts, convenient installation, simple operation, and strong applicability.

[0016] In addition, the present utility model can avoid the situation that the state of the clamping mechanism cannot be determined, and avoid the structural damage and scrapping caused by misjudgment. At the same time, since the detection device of the present utility model adopts the design method of paralleling the pipeline with the clamping mechanism, the inner diameter of the signal cylinder of the detection device can be adjusted to meet the detection requirements in different spaces. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the detection device for detecting the clamping degree of the rotating shaft of a machine tool according to the present utility model;

[0018] Figure 2 is a schematic structural diagram of the signal cylinder of the present utility model Figure 1 ;

[0019] Figure 3 is a schematic structural diagram of the signal cylinder of the present utility model Figure 2 .

[0020] In the figure, 1 - connecting plate; 2 - switch bracket; 3 - piston rod; 4 - dust ring; 5 - second sealing ring; 6 - front cylinder block; 7 - first sealing ring; 8 - third sealing ring; 9 - rear cylinder block; 10 - oil inlet; 11 - oil outlet; 12 - switch. Detailed Embodiment

[0021] The following will describe the present utility model in detail with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figure 1As shown in the figure, the present utility model provides a detection device for detecting the clamping degree of a machine tool rotating shaft, comprising: a connecting plate 1, on which a signal oil cylinder is installed, and a switch bracket 2 arranged on one side of the signal oil cylinder; an oil inlet 10 and an oil drain port 11 are arranged on the signal oil cylinder, a piston rod 3 is installed in the signal oil cylinder, a proximity switch 12 is installed on the switch bracket 2, and the output end of the piston rod 3 is matched with the switch 12. When the piston rod 3 outputs motion, it contacts the switch 12.

[0023] It should be noted that in the present utility model, the detection device adopts a design method of being in parallel pipeline with the clamping mechanism. By contacting the switch of the detection device and through corresponding signals, the current state of the clamping mechanism is indirectly judged to complete the feedback.

[0024] Specifically, as Figure 2 、 3 shown, the signal oil cylinder includes a front cylinder body 6 and a rear cylinder body 9 installed on the connecting plate 1, and the front cylinder body 6 and the rear cylinder body 9 are sealed and connected; the front cylinder body 6 and the rear cylinder body 9 are connected through a multi-stage table structure. A first sealing ring 7 is installed on the mounting surface of the front cylinder body 6 and the rear cylinder body 9.

[0025] Furthermore, the piston rod 3 is installed in the front cylinder body 6 and the rear cylinder body 9, and a second sealing ring 5 and a third sealing ring 8 are respectively installed in the front cylinder body 6 and the rear cylinder body 9. A dust-proof ring 4 is installed at the port of the front cylinder body 6 for sealing to prevent sundries from entering the cylinder body and causing wear.

[0026] Preferably, the switch bracket 2 is provided with a U-shaped hole matching the piston rod 3, the switch 12 is arranged in the U-shaped hole, and the detection requirements in different spaces can be adapted by adjusting the inner diameter of the signal oil cylinder of the detection device. Exemplarily, the switch 12 is a proximity switch.

[0027] In addition, the oil inlet 10 is arranged at the end of the rear cylinder body 9, and the oil drain port 11 is arranged on the side wall of the front cylinder body 6.

[0028] The specific mechanical structure of the present utility model is: an independent signal oil cylinder unit is composed of a front cylinder body 6, a rear cylinder body 7, a piston rod 3, a dust-proof ring 4, a sealing ring, a switch bracket 2, a proximity switch, a pipe joint and a connecting plate. The piston rod 3 is located in the oil cylinder body and is sealed by a sealing ring. The oil cylinder body and the switch bracket 2 are installed at corresponding positions on the connecting plate 1. The oil cylinder body is filled with oil to push the piston rod 3 to perform axial motion. The piston rod 3 touches the proximity switch through axial motion and emits corresponding signals, thereby judging the state of the connected clamping oil cylinder.

[0029] The installation process of the present utility model is:

[0030] Press Figure 1Assemble the signal cylinder unit as shown. First, install the sealing rings 5 and 7 into the front cylinder block 6, then install the sealing ring 8 into the rear cylinder block 9. Next, insert the piston rod 3 into the rear cylinder block 9. Then, connect and fix the assembled front cylinder block 6 and rear cylinder block 9 with screws. Finally, install the dust ring 4 from the front end of the piston rod 3 into the front cylinder block 6 to complete the installation of the signal cylinder. Then, fix the installed signal cylinder to the connecting plate 1, install the switch bracket 2 on the connecting plate 1 as well, and then install the proximity switch onto the switch bracket 2 and fix it. Adjust its position on the connecting plate 1 through the U-shaped hole on the switch bracket 2. The above completes the installation of the signal cylinder and realizes the indirect detection of the clamping state of the clamping mechanism. By pushing the piston rod 3 axially with hydraulic oil, it touches the proximity switch at different positions and emits corresponding signals to indirectly judge the current state of the clamping mechanism and complete the feedback.

[0031] Specific working steps:

[0032] Step 1: Insert the piston rod 3, dust ring 4 and sealing rings into the front cylinder block 6 and rear cylinder block 9, and then connect and fix the front cylinder block 6 and rear cylinder block 9 with screws to complete the assembly of the signal cylinder.

[0033] Step 2: Install the signal cylinder into the positioning hole of the connecting plate through the screw holes on the side to position the signal cylinder so that its position will not change.

[0034] Step 3: Install the switch bracket 2 at the fixed position on the connecting plate 1, and install the proximity switch onto the switch bracket 2 and fix its position with screws.

[0035] Step 4: During the detection of the signal cylinder, inject pressure oil through the pipe joint at the oil inlet of the cylinder to make the piston rod 3 move axially, and touch the proximity switch to transmit corresponding signals to realize the indirect detection of the state of the clamping mechanism.

[0036] For those skilled in the art, it is obvious that the above specific factual examples are only the preferred solutions of the present invention. Therefore, the improvements and changes that those skilled in the art may make to some parts of the present invention still embody the principle of the present invention and achieve the purpose of the present invention, and all fall within the scope protected by the present invention.

Claims

1. A detection device for detecting the clamping degree of a rotary axis of a machine tool, characterized in that: include: A connecting plate (1) is mounted on the connecting plate (1) and a switch bracket (2) is arranged on one side of the signal oil cylinder; the signal oil cylinder is provided with an oil inlet (10) and an oil outlet (11); a piston rod (3) is mounted in the signal oil cylinder; a proximity switch (12) is mounted on the switch bracket (2); the output end of the piston rod (3) cooperates with the switch (12); when the piston rod (3) outputs movement, it contacts the switch (12).

2. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 1, characterized in that: The signal oil cylinder comprises a front cylinder body (6) and a rear cylinder body (9) which are mounted on a connecting plate (1); the front cylinder body (6) and the rear cylinder body (9) are sealed and connected.

3. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 2, characterized in that: The front cylinder body (6) and the rear cylinder body (9) are connected via a multi-level table structure.

4. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 3, characterized in that: The mounting surfaces of the front cylinder body (6) and the rear cylinder body (9) are mounted with first sealing rings (7).

5. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 2 or 4, characterized in that: The piston rod (3) is installed in the front cylinder body (6) and the rear cylinder body (9), and the front cylinder body (6) and the rear cylinder body (9) are respectively installed with a second sealing ring (5) and a third sealing ring (8).

6. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 1, characterized in that: The switch bracket (2) is provided with a U-shaped hole matching the piston rod (3), and the switch (12) is arranged in the U-shaped hole.

7. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 1 or 6, characterized in that: The switch (12) is a proximity switch.

8. The detection device for detecting the clamping degree of a rotary axis of a machine tool according to claim 2, characterized in that: The oil inlet (10) is arranged at the end of the rear cylinder body (9), and the oil outlet (11) is arranged on the side wall of the front cylinder body (6).

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