CN204735989U - Rotatory tool of five -axle linkage - Google Patents

Abstract

The utility model discloses a five-axis linkage rotary jig, which comprises a base, a clamping device and an airtight detection device. The holding heads are all driven by hydraulic pressure; the airtight detection device includes a vent pipe and an airtight pressure sensor arranged on the base, one end of the vent pipe is connected with the suction port of the negative pressure machine, and the other end of the vent pipe faces the workpiece and is at the height of the bottom surface of the workpiece Consistent, gas-tight pressure sensor with detection head located in the vent tube. The turntable of the utility model can drive the clamping head to rotate, which is convenient for the workpiece to be removed from the tool and to clamp irregular workpieces. Both the turntable and the clamping head are driven by hydraulic pressure, which can position the workpiece on the XZ plane. Compared with manual drive, it is more convenient and intelligent, and the loading and unloading of the workpiece is simple. The airtight detection device can know whether the workpiece is in the correct position during positioning, so that the processing quality of the workpiece can be controlled.

Description

Five-axis linkage rotary fixture

technical field

The utility model belongs to the technical field of machine tool parts, components or accessories.

Background technique

Five-axis linkage is a term for numerical control. Linkage means that the axes of a CNC machine tool reach a certain set point at the same time at a certain speed. Five-axis linkage means that there are at least five coordinate axes (three linear coordinates and two Rotational coordinates) can be processed simultaneously under the control of the computer numerical control (CNC) system, and can process more complex curved surface workpieces.

Before performing five-axis machining on the workpiece, the workpiece on the five-axis workbench must be positioned, and the workpiece must be positioned correctly in the three linear coordinate directions, otherwise the processed workpiece will be damaged due to the five-axis linkage. Poorly positioned and does not meet requirements.

In the current technology, the fixtures used for five-axis linkage have the following problems: 1. In order to ensure correct positioning, the structure is usually more complicated, and more clamping (or pressing) devices are required to fix the workpiece, and the above clamping ( or pressing) devices need to be manually operated, resulting in more troublesome loading and unloading of the workpiece, which takes a long time, thus affecting the processing efficiency of the workpiece. 2. There is no detection mechanism for the position of the workpiece, so it is impossible to know whether the workpiece is in the correct position during positioning, making the processing quality of the workpiece uncontrollable.

Utility model content

The utility model provides a five-axis linkage rotating jig to solve the problems that the existing jig has complex structure, manual operation, low loading and unloading efficiency, and no detection mechanism for the position of the workpiece, which makes the processing quality of the workpiece uncontrollable.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: A five-axis linkage rotating fixture, including a base, a clamping device and an air-tight detection device, the base is provided with a turntable, the clamping device includes a clamping head, clamping The head is set on the turntable, and both the turntable and the clamping head are hydraulically driven; the airtight detection device includes a ventilator and an airtight pressure sensor arranged on the base, and one end of the ventilator is provided with an interface connected to the suction port of the negative pressure machine. The other end of the air pipe faces the workpiece, and the height of the other end of the air pipe is consistent with the height of the bottom surface of the workpiece, and the detection head of the airtight pressure sensor is located in the air pipe.

The principle of the utility model is that it can be used in conjunction with a PLC controller, which can control the rotation angle of the turntable and the expansion and contraction of the clamping head, and can also realize the clamping of the workpiece through the pressure value output by the airtight pressure sensor. Detection makes this structure more intelligent. When the workpiece is at a suitable height, the vent tube can absorb the workpiece more firmly; when the workpiece is not located on the vent tube or the workpiece and the vent tube cannot fit well due to foreign objects, the vent tube cannot hold the workpiece more firmly. Adhere firmly.

Compared with the prior art, the utility model has the following advantages: 1. The base is provided with a turntable, and the clamping head is arranged on the turntable, and the turntable will drive the clamping head to rotate, which is convenient for the workpiece to be removed from the tool and to clamp irregularly. artifacts. 2. Both the turntable and the clamping head are driven by hydraulic pressure, which can position the workpiece on the XZ plane. Compared with manual drive, it is more convenient and intelligent. The loading and unloading of the workpiece is simple and takes less time, which helps to improve the processing efficiency of the workpiece . 3. Equipped with an airtight detection device, the bottom surface of the workpiece is adsorbed by the negative pressure of the ventilation pipe, and the pressure value in the ventilation pipe is detected by the airtight pressure sensor to judge whether the workpiece is at a suitable height (that is, the Y direction), and it can be known Whether the workpiece is in the correct position during positioning, so that the processing quality of the workpiece can be controlled.

Further, the number of the ventilation pipes is multiple, and the distance between the ventilation pipes is 3-5cm, which is convenient for multi-point detection on the bottom surface of the workpiece, and the distance of 3-5cm is more reasonable, and the detection of the workpiece position is also more accurate .

Further, the number of the clamping heads is two, which prevents the clamping heads from being over-positioned, and the number of the turntables is also two. The two clamping heads are respectively arranged on the two turntables, and the clamping heads can be rotated according to the actual situation. The rotation of the two clamping heads can be synchronous or asynchronous.

Further, a rubber layer is provided on the side of the clamping head close to the workpiece to prevent the workpiece from being pinched.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further described:

Fig. 1 is a schematic structural view of an embodiment of a five-axis linkage rotating jig of the present invention.

Fig. 2 is a structural block diagram of the PLC controller of the embodiment of the five-axis linkage rotating jig of the present invention.

Detailed ways

The reference signs in the accompanying drawings of the description include: base 1 , negative pressure machine 2 , turntable 3 , clamping head 4 , vent pipe 5 , detection head 6 , and cutter 7 .

As shown in FIG. 1 , a five-axis linkage rotary jig in this embodiment includes a base 1 , a clamping device, an airtight detection device, a PLC controller and a negative pressure machine 2 . The base 1 is fixed on the five-axis workbench, and the base 1 is provided with two turntables 3, and the two turntables 3 are located on the left and right sides of the five-axis workbench. The clamping device includes two clamping heads 4, and the two clamping heads 4 are respectively arranged on two turntables 3. Both the turntable 3 and the clamping heads 4 are driven by hydraulic pressure, as shown in Figure 2, and the hydraulic pressure is controlled by a PLC controller. The airtight detection device comprises the vent pipe 5 and the airtight pressure sensor that are arranged on the base 1, the quantity of the vent pipe 5 is four, the distance between the vent pipe 5 is 4cm, one end of the vent pipe 5 and the negative pressure machine 2 The suction port is connected, the other end of the air pipe 5 faces the workpiece and is at the same height as the bottom surface of the workpiece, and the detection head 6 of the airtight pressure sensor is located in each air pipe 5, as shown in Figure 2, the signal output of the airtight pressure sensor The terminal is electrically connected to the PLC controller, and the PLC controller is also electrically connected to a warning light.

The PLC controller stores the moving distance of the clamping head 4, the rotation angle of the turntable 3 and the allowable pressure value of the airtight pressure sensor when the tool 7 moves.

The usage method of this embodiment is as follows: the workpiece is placed on the jig, the negative pressure machine 2 is started, and the negative pressure absorbs the bottom surface of the workpiece through the vent pipe 5 . The PLC controller controls the hydraulic pressure to drive the two clamping heads 4 to move inwards to clamp the left and right sides of the workpiece. At this time, the air-tight pressure sensor detects the air pressure values in the four air pipes 5. When the air pressure values in the air pipes 5 are all greater than the allowable pressure value, the negative pressure machine 2 ejects gas, and the air pipes 5 no longer hold the workpiece. The bottom surface of the tool is adsorbed, and the PLC controller controls the hydraulic drive to drive the turntable 3 to rotate, so that the workpiece is located under the tool 7, and the workpiece starts to be processed. When the air pressure values in the ventilation pipes 5 are all less than the allowable pressure values, the warning lights will light up, and the PLC controller will not control the hydraulically driven turntable 3 to rotate, which is convenient for operators to find abnormalities.

In this embodiment, the mechanical structure, hydraulic control and PLC controller are combined to make the clamping of the workpiece more intelligent and fast, and facilitate the improvement of the processing efficiency of the workpiece. This embodiment uses an airtight detection device to detect the position of the workpiece. When the workpiece is at a suitable height, the vent pipe 5 can firmly absorb the workpiece, and the pressure values detected by the airtight pressure sensor are greater than Allowable pressure value; when the workpiece is not located on the vent pipe 5 or the workpiece and the vent pipe 5 cannot fit well due to foreign matter, at least one vent pipe 5 cannot firmly absorb the workpiece, and the airtight pressure sensor The detected pressure value will be less than the allowable pressure value. If the workpiece is not on the vent pipe 5 (that is, the workpiece is not in a proper position), start the tool 7, which will cause the tool 7 to do useless work; if there is a foreign object between the workpiece and the vent pipe 5 (that is, there is a foreign object under the workpiece), start the tool 7 processing will cause the tool 7 to wear out too quickly.

For those skilled in the art, under the premise of not departing from the structure of the utility model, some deformations and improvements can also be made, which should also be regarded as the protection scope of the utility model, and these will not affect the implementation of the utility model Effects and utility of patents.

Claims (4)

1. a five-axle linkage rotating jig, comprise base and clamping device, it is characterized in that: also comprise air tightness detection apparatus, base is provided with turntable, and clamping device comprises clamping head, and clamping head is located on turntable, and turntable and clamping head all pass through hydraulic-driven; Air tightness detection apparatus comprises and is arranged on breather pipe on base and air-tightness pressure sensor, one end of breather pipe is provided with the interface be communicated with Negative pressure machine inlet scoop, the breather pipe other end is towards workpiece, and the height of the breather pipe other end and the height of workpiece bottom consistent, the detection head of air-tightness pressure sensor is positioned at breather pipe.

2. five-axle linkage rotating jig as claimed in claim 1, is characterized in that: the quantity of described breather pipe is multiple, and the distance between breather pipe is 3-5cm.

3. five-axle linkage rotating jig as claimed in claim 2, it is characterized in that: the quantity of described clamping head is two, the quantity of turntable is also two, and two clamping heads are located on two turntables respectively.

4. five-axle linkage rotating jig as claimed in claim 2, is characterized in that: described clamping head is provided with rubber layer near the side of workpiece.