A knife setting device and knife setting method for abrasive water jet equipment

Abstract

The present invention provides a tool setting device and a tool setting method for abrasive water jet equipment, belonging to the field of processing and manufacturing technology. The device comprises a fixing part detachably mounted on the jet port of the water jet cutting equipment, a light source is arranged inside the fixing part, the fixing part is sequentially connected with a concave-convex mirror and a convex lens along the jet direction of the jet port, the concave lens and the convex lens are coaxially placed, the light emitted by the light source can vertically pass through the concave lens and the convex lens, and the concave lens can move along the jet direction. The device can facilitate the operator to determine the starting point of the processing and the size and shape of the contact surface between the jet and the workpiece.

Description

Technical Field

[0001] The present invention belongs to the technical field of processing and manufacturing, and particularly relates to a tool setting device and a tool setting method for an abrasive water jet device. Background Art

[0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

[0003] As a special processing method, abrasive water jet has been widely used due to its unique processing advantages. However, there is no tool setting device suitable for abrasive water jet machine tools. In actual production, most of the tool setting is done by the operator using his eyes before the high-pressure pump is turned on. The accuracy of this tool setting method generally cannot meet the processing requirements. In addition, abrasive water jet is not like traditional processing, which can be done by trial cutting. During processing, it will generate strong reflective water flow, which is mixed with high-speed abrasive particles, making it impossible for the operator to get close to observe.

[0004] The diameter of the jet will gradually increase after it is ejected from the nozzle. The jet will diverge outward at a certain angle (A), and the size of the divergence angle (A) is related to processing parameters such as water pressure, sand volume, target distance, impact angle, etc. Different processing parameters will be used when processing different workpieces or even different processes of the same workpiece, so the size and shape of the contact surface between the jet and the workpiece are different. When setting the tool, it is necessary to consider the size and shape of the actual contact surface to determine the processing starting point. When the jet processes the workpiece at a non-90° angle, Figure 1 , the contact surface between the jet and the workpiece is an ellipse. In this case, it is difficult to determine the shape and size of the ellipse if the operator only observes it with his eyes. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present disclosure provides a tool setting device and a tool setting method for an abrasive water jet device, through which an operator can easily determine the starting point of processing and determine the size and shape of the contact surface between the jet and the workpiece.

[0006] At least one embodiment of the present disclosure provides a tool setting device for abrasive water jet cutting equipment, the device includes a fixing part detachably mounted on a jet port of the water jet cutting equipment, a light source is provided inside the fixing part, the fixing part is sequentially connected to a concave-convex mirror and a convex lens along the jet direction of the jet port, the concave lens and the convex lens are coaxially arranged, the light emitted by the light source can pass through the concave lens and the convex lens, and the concave lens can move in a direction close to the convex lens.

[0007] Furthermore, the fixing member is detachably connected to a drill clamp, and the drill clamp is provided with a three-jaw chuck.

[0008] Furthermore, the concave lens is arranged on the fixing member through a first cylindrical shell, and a plurality of grooves are provided on the outer wall surface of one end of the first cylindrical shell away from the fixing member. The concave lens is installed in the first cylindrical shell, and a slider corresponding to the groove is provided on the edge of the concave lens, and the slider can slide in the groove.

[0009] Furthermore, the convex lens is installed in a second cylindrical shell, and the second cylindrical shell is connected to the first cylindrical shell.

[0010] Furthermore, the first cylindrical shell and the fixing member, and the first cylindrical shell and the second cylindrical shell are fixedly connected together by threads.

[0011] Furthermore, an external thread is provided on an outer wall surface of one end of the first cylindrical shell that is connected to the second cylindrical shell, and an internal thread meshing with the external thread is provided in the second cylindrical shell.

[0012] Furthermore, a driving member for controlling the movement of the concave lens is provided between the first cylindrical shell and the second cylindrical shell.

[0013] Furthermore, the driving member is a rotating nut, the inner diameter of the rotating nut is larger than the outer diameter of the first cylindrical shell, and the surface of the slider on the concave lens is provided with an external thread meshing with the rotating nut.

[0014] At least one embodiment of the present disclosure further provides a water jet machine tool, which includes a tool setting device for abrasive water jet cutting equipment as described in any one of the above items.

[0015] At least one embodiment of the present disclosure further provides a tool setting method for a tool setting device of an abrasive water jet cutting device based on any one of the above items, the method comprising the following process:

[0016] Move the jet head of the water jet equipment to the non-machining surface, set the machining parameters, and turn off the high-pressure pump connected to the machine tool after a trial cut for N seconds;

[0017] The device is installed on the injection head of the water jet equipment, during which the coaxiality of the light source, the concave-convex lens and the injection head in the device must be ensured;

[0018] Turn on the light source, move the concave lens to adjust the size of the light spot on the workpiece surface, and modulate the light spot to coincide with the mark left by the water jet;

[0019] Move the cutter head, find the processing starting point, complete the cutter alignment, and remove the device from the sand mixing pipe.

[0020] The beneficial effects of the present disclosure are as follows:

[0021] The tool setting device provided by the present invention can be installed on the injection head of a water jet, and the light emitted by the light source in the device is emitted through concave and convex lenses to overlap the refracted light with the mark left by the jet. The light source is used to set the tool, which is convenient for manual observation of the cutting point. This not only facilitates adjustment, but also avoids the defect that the operator cannot get close to the tool when directly jetting water, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0023] Figure 1 This is a state diagram of the existing abrasive water jet equipment when the jet processes the workpiece at a non-90° angle;

[0024] Figure 2 An overall structural diagram of a tool setting device for an abrasive water jet device provided in an embodiment of the present disclosure;

[0025] Figure 3 A structural diagram of a drill clamp in a tool setting device provided in an embodiment of the present disclosure;

[0026] Figure 4 A structural diagram of a concave lens in a tool setting device provided in an embodiment of the present disclosure;

[0027] Figure 5 This is a diagram showing how the tool setting device provided in the embodiment of the present disclosure is used when the machining accuracy is high.

[0028] In the figure: 1, drill bit clamp, 11, three-jaw chuck, 12, external thread, 2, back cover, 3, light source, 4, concave lens holder, 5, concave lens, 51, slider, 6, rotating nut, 7, front cover, 8, convex lens. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used in the present disclosure have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0030] like Figure 2As shown, the embodiment of the present disclosure provides a tool setting device for abrasive water jet equipment, the device mainly includes a front cover 1 installed on the jet port of the water jet machine, a rear cover 7, and a concave lens 5 and a convex lens 8 located between the front and rear covers, wherein a light source 3 is provided in the front cover, the convex lens and the convex lens are parallel to each other, and the distance between the concave lens and the convex lens can be changed, and the light emitted by the light source in the front cover can pass through the concave lens and the convex lens to produce a light spot, so that the device is installed on the sand mixing pipe of the water jet machine, and by turning on the light source in the front cover 1, the light spot refracted by the concave and convex lenses replaces the shape of the water jet. It is convenient for manual observation of the cutting point, which is not only convenient for adjustment, but also avoids the defect that the operator of the direct water jet tool setting cannot get close, and improves the processing accuracy.

[0031] It should be noted that the diameter of the convex lens in this embodiment is designed to be the same as the diameter of the jet outlet of the sand mixing tube in the water jet device.

[0032] Specifically, Figure 2 As shown, in this embodiment, the rear cover 2 is mainly a cylindrical shell, and a drill clamp 2 is connected to one end of the cylindrical shell in the length direction. The drill clamp is used to fix the sand mixing pipe in the water jet equipment. Figure 3 As shown, a three-jaw chuck 11 is provided at one end of the drill clamp in the length direction, and the drill clamp is fixed to the sand mixing pipe through the three-jaw chuck, and then an external thread 12 is provided on the outer wall surface of the other end of the drill bracket in the length direction, and is connected to the back cover through a thread. In this way, the tool setting device is fixed to the water jet machine tool, and when it is not needed, the three-jaw chuck of the drill clamp is separated from the sand mixing pipe on the water jet machine tool, and the entire device can be disassembled.

[0033] The back cover in this embodiment is connected to a concave lens frame 4 by threads along the direction of the water jet device. The concave lens frame 4 is also on a similar cylindrical shell. Specifically, one end of the concave lens frame in the length direction is provided with an external thread, and then the concave lens frame is screwed into the back cover. At the same time, a plurality of slide grooves are evenly arranged in the circumferential direction of the other end of the concave lens frame. These slide grooves extend along the axial direction of the concave lens frame. At the same time, a slider 51 with the same number as the slide grooves is arranged in the circumferential direction of the concave lens 5. Figure 3 , so that the concave lens can be inserted into the concave lens frame through the slider on the concave lens.

[0034] Furthermore, the outer wall surface of the end of the concave lens 4 where the slide groove is arranged is provided with an external thread. Figure 4 The front cover 7 can be connected through the external thread, and a convex lens 8 is installed on the front cover 7, so that the convex lens is fixed.

[0035] Furthermore, in order to facilitate the movement of the concave lens, a rotating nut 6 is provided between the front cover and the rear cover. The rotating nut is mounted on the concave lens frame, and the inner diameter of the concave lens is larger than the outer diameter of the concave lens frame. At the same time, a thread is processed on the outer wall surface of the slider on the concave lens. The outer diameter of the entire concave lens is equal to the inner diameter of the rotating nut. In this way, the connection between the concave lens and the rotating nut is realized. In this way, the concave lens can be controlled to move in the sliding groove on the concave lens frame by rotating the rotating nut to control the distance between the concave lens and the convex lens.

[0036] In addition, this embodiment also provides an abrasive water jet cutting machine tool, which includes the tool setting device described above, and the device can be installed on the water jet injection port of the machine tool.

[0037] The following is a detailed description of a tool setting method based on the tool setting device for an abrasive water jet machine tool. The method comprises the following steps:

[0038] 1. Move the cutter head of the abrasive waterjet cutting equipment to the non-processing surface, set the processing parameters, and turn off the high-pressure pump after a few seconds of trial cutting. At this time, the jet mark will be left on the surface of the workpiece;

[0039] 2. Install the knife setting device on the yarn tube of the water jet machine. During this process, the coaxiality of the device and the sand mixing tube must be ensured;

[0040] 3. Turn on the laser light source in the tool setting device, control the distance between the concave lens and the convex lens by rotating the nut, and adjust the size of the light spot refracted on the workpiece surface so that the final light spot coincides with the mark left by the water jet equipment.

[0041] The diameter of the convex lens of the tool setting device is designed to be the same as the jet outlet diameter of the sand mixing tube of the water jet equipment, so that when the light spot and the water jet mark coincide, the laser beam can be used to simulate the water jet beam. In addition, the tool setting device is provided with a scale (similar to the micrometer scale) on the front cover. If the operator records a certain processing parameter and rotates the nut at the scale where the mark is located, when the parameter is used for the second time, it can be directly dialed to this scale, saving one step.

[0042] 4. Move the cutter head, find the processing starting point, complete the cutter alignment, and remove the device from the sand mixing pipe, or leave the drill chuck on the sand mixing pipe.

[0043] It should be noted that, when the machining accuracy is low, because the thickness of the tool setting device is small, when the target distance is less than this thickness, it can be considered that the jet has no divergence phenomenon and the divergence angle is zero. At this time, you only need to adjust the rotating nut on the device to let the laser shoot out in a straight line to determine the machining starting point.

[0044] If the machining accuracy is high, see Figure 5The tool setting device can be installed at a fixed distance in the direction of movement of the sand pipe, and the bottom end of the device is flush with the bottom end of the sand pipe. After using this device to find the processing starting point, the tool setting can be completed by moving the fixed distance in the opposite direction.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present disclosure.

[0046] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A tool setting method for a tool setting device of an abrasive water jet cutting device, characterized in that: The invention comprises a tool setting device for abrasive water jet cutting equipment and a machine tool for installing the tool setting device; the tool setting device for abrasive water jet cutting equipment comprises a fixing part detachably mounted on the jet port of the water jet cutting equipment, a light source is arranged inside the fixing part, the fixing part is sequentially connected with a concave lens and a convex lens along the jet direction of the jet port, the concave lens and the convex lens are coaxially arranged, the light emitted by the light source can pass through the concave lens and the convex lens, and the concave lens can move in a direction close to the convex lens; the fixing part is detachably connected with a drill clamp, and a three-jaw chuck is arranged on the drill clamp; the device is installed on the jet head of the water jet equipment, and after completing the tool setting, the device is taken off the sand mixing pipe; The concave lens is arranged on the fixing member through a first cylindrical shell, a plurality of grooves are arranged on the outer wall surface of one end of the first cylindrical shell away from the fixing member, the concave lens is installed in the first cylindrical shell, and a slider corresponding to the groove is arranged on the edge of the concave lens, and the slider can slide in the groove; the tool setting device is provided with a scale on the front cover, and the operator records a certain processing parameter at the scale where the rotating nut is marked, and when the parameter is used for the second time, the scale can be directly dialed; The tool setting method includes the following processes: Move the jet head of the water jet equipment to the non-machining surface, set the machining parameters, and turn off the high-pressure pump connected to the machine tool after a trial cut for N seconds; Install the device onto the injection head of the water jet equipment. During this process, ensure the coaxiality of the light source, concave-convex lens and injection head in the device, and ensure the coaxiality of the device and the sand mixing pipe; Turn on the light source, move the concave lens to adjust the size of the light spot on the workpiece surface, and modulate the light spot to coincide with the mark left by the water jet; Move the cutter head, find the processing starting point, complete the cutter alignment, and remove the device from the sand mixing pipe.

2. A tool setting method for a tool setting device of an abrasive water jet cutting device according to claim 1, characterized in that: The convex lens is installed in the second cylindrical shell, and the second cylindrical shell is connected to the first cylindrical shell.

3. A tool setting method for a tool setting device of an abrasive water jet cutting device as claimed in claim 2, characterized in that: The first cylindrical shell and the fixing piece as well as the first cylindrical shell and the second cylindrical shell are fixedly connected together by threads.

4. A tool setting method for a tool setting device of an abrasive water jet cutting device as claimed in claim 2, characterized in that: An external thread is arranged on the outer wall surface of one end of the first cylindrical shell body which is connected with the second cylindrical shell body, and an internal thread which meshes with the external thread is arranged in the second cylindrical shell body.

5. A tool setting method for a tool setting device of an abrasive water jet cutting device as claimed in claim 2, characterized in that: A driving member for controlling the movement of the concave lens is arranged between the first cylindrical shell and the second cylindrical shell.

6. A tool setting method for a tool setting device of an abrasive water jet cutting device according to claim 1, characterized in that: The driving member is a rotating nut, the inner diameter of which is larger than the outer diameter of the first cylindrical shell, and the surface of the slider on the concave lens is provided with an external thread meshing with the rotating nut.

Images