Ship plate steel welding sample groove machining device

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a ship plate steel welding sample groove machining device which is characterized by comprising a base, a stand column, a power box, a lifting mechanism, a first tool apron, a second tool apron, a clamp and a workbench, the base is connected with the power box through the stand column, and the power box ascends, descends and is positioned along the stand column through the lifting mechanism. A first tool apron and a second tool apron are arranged on the power box in the horizontal direction, the workbench is connected with the base, and a clamp is arranged on the workbench. A saw blade milling cutter is arranged in the first tool apron, a profiling milling cutter is arranged in the second tool apron, the track center of the saw blade milling cutter and the track center of the profiling milling cutter are collinear, and the workbench reciprocates in the X-axis direction. The utility model has the advantages that the double milling heads are used for processing the groove, the saw blade milling cutter is used for slotting, the profiling milling cutter is used for cutting to form the groove shape, and the profiling milling cutter can be used for automatically centering and reducing vibration by utilizing the slot formed by the saw blade milling cutter, so that the processing efficiency is greatly improved, and the analysis deviation caused by the difference of sample processing is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a ship plate steel welding sample groove processing device. Background Art

[0002] Welding simulation test is a simulation test of the welding performance of metals. The simplest one is the thermal simulation test that simulates the thermal cycle process in the welding heat affected zone. The more complex one is the test that simulates the heat, restraint stress and strain cycle of the welding process at the same time. The specimens used for ship plate steel welding simulation test are required to have uniform size, so that the test results have strong regularity and can be used for accurate analysis.

[0003] Conventional processing methods for beveling metals mainly include shearing, oxygen cutting, planing, turning, scraping, carbon arc gouging, etc. The bevel is a groove of a certain geometric shape that is processed and assembled in the part to be welded of the weldment. For the specimens used for welding tests, since metallographic analysis of the weld-affected zone is required, it is advisable to use cold processing for the processing of the bevel. For example, shearing: It is suitable for I-shaped bevel processing of thinner steel plates and is often performed using a shearing machine. Turning: It is mainly used for beveling pipes and is completed using a lathe or a pipe turning machine. Shoveling: Use an air shovel to process the bevel and the root of the pick weld. The quality of the bevel processing has an important influence on the welding process, so it should meet the requirements of the drawings or technical conditions.

[0004] The Chinese utility model patent application number 201420005858.2 discloses a combined milling cutter, including two cylindrical tool holders vertically connected to the side wall of the tapered shank, the tool holders are radially provided with grooves for clamping the milling cutters, the tool holders are provided with positioning bolts for positioning the milling cutters, the lower outer wall of the tool holders is threadedly connected with an adjusting nut, and the front of the tapered shank has a positioning rod. The utility model has two tool holders and the outer wall of the tool holders is threadedly connected with an adjusting nut, and the heights of the two milling cutters can be adjusted by the nuts respectively to achieve the purpose of completing the groove at one time. The scheme aims to improve the processing efficiency of the groove through a combination form, but in actual cutting operation, there is a situation where the wear of the two tools is inconsistent. In order to make the two milling cutters reach the appropriate height to meet the appropriate cutting amount, it often takes a longer time to adjust, and the structure is limited to the processing of circular grooves, and is not suitable for the processing of straight grooves of the ship plate steel welding sample of this application. Utility Model Content

[0005] The utility model aims to provide a ship plate steel welding sample groove processing device, overcomes the shortcomings of the prior art, aims at the groove shape requirements of the ship plate steel welding sample, adopts a double milling head to process the groove, the two tools cooperate with each other, improves the processing efficiency, is convenient for replacement, and cooperates with a laser marking head to complete the sampling point marking of the heat affected zone on the sample, avoids the processing error caused by the secondary clamping, is conducive to the batch preparation of welding samples, and reduces the analysis deviation caused by the difference in sample processing.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A ship plate steel welding specimen groove processing device, characterized in that it includes a base, a column, a power box, a lifting mechanism, a first tool holder, a second tool holder, a fixture and a workbench, the base is connected to the power box through the column, the power box is lifted and positioned along the column through the lifting mechanism, a first tool holder and a second tool holder are arranged in the horizontal direction on the power box, the workbench is arranged on the base, and a fixture is arranged on the workbench; a saw blade milling cutter is arranged in the first tool holder, a profiling milling cutter is arranged in the second tool holder, the trajectory centers of the saw blade milling cutter and the profiling milling cutter are collinear, and the workbench reciprocates along the X-axis direction driven by an X-axis servo motor.

[0008] Furthermore, the fixture includes a fixture seat, a pressure plate, a shim and a wedge. A sample groove is provided in the fixture seat. An empty knife groove with a width of 5-10mm and a depth of 10-15mm is provided in the center of the fixture seat along the length direction. Four pressure plates are symmetrically distributed on both sides of the fixture seat. The center of the pressure plate is connected to the T-slot on the workbench through a T-bolt. One end of the pressure plate is pressed on the surface edge of the sample, and the other end is connected to the workbench through the shim and the wedge.

[0009] Furthermore, the cutter head of the profiling milling cutter is in a 60° triangle or U shape, and the width of the cutter head of the profiling milling cutter is 10 mm.

[0010] Furthermore, the saw blade milling cutter has a thickness of 2-3 mm.

[0011] Furthermore, a Y-axis slide rail and a Y-axis lead screw are provided on the side of the power box, a laser marking head is provided on the Y-axis slide rail, one end of the Y-axis lead screw is connected to the Y-axis servo motor, and the laser marking head is connected to the control box located on the other side of the power box through a cable. The marking distance of the laser marking head is 300-500mm and the power is 30W-50W.

[0012] Furthermore, the sample is ship plate steel EH36, with a thickness of 10 mm, and is cut by a shearing machine without burrs on the periphery.

[0013] Furthermore, the first tool holder and the second tool holder are both tapered shank locking tool holders.

[0014] The lifting mechanism includes a Z-axis servo motor, a Z-axis guide rail and a Z-axis lead screw. The top of the Z-axis lead screw is connected to the Z-axis servo motor. The Z-axis guide rail is located on the column. The Z-axis guide rail is matched with a slider on the power box. The Z-axis lead screw is engaged with a nut sleeve on the power box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) In view of the linear groove shape requirements of ship plate steel welding specimens, double milling heads are used to process the grooves. The two tools cooperate with each other and are convenient to replace separately. The saw blade milling cutter is used for grooving, and the copy milling cutter is used for cutting to form the groove shape. The copy milling cutter can use the groove opened by the saw blade milling cutter for automatic centering to reduce vibration, thereby greatly improving the processing efficiency;

[0017] 2) The device is equipped with a laser marking head, which can complete the marking of the sampling points in the heat-affected zone on the sample. The sampling points have high positioning accuracy and higher repeatability, which is conducive to improving the accuracy of the sample analysis results;

[0018] 3) All clamping is completed in one time, avoiding the processing error caused by secondary clamping, which is conducive to batch preparation of welding specimens and reducing the analysis deviation caused by the difference in specimen processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Left view of

[0021] Figure 3 This is a schematic diagram of the clamp structure in the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the V-shaped groove structure in the embodiment of the utility model.

[0023] In the figure: 1-base, 2-column, 3-power box, 4-lifting mechanism, 5-first tool holder, 6-second tool holder, 7-fixture, 8-workbench, 9-Y-axis slide rail, 10-Y-axis screw, 11-laser marking head, 12-Y-axis servo motor, 13-control box, 14-operation panel, 15-Z-axis servo motor, 16-Z-axis guide rail, 17-Z-axis screw, 18-fixture seat, 19-pressing plate, 20-shim, 21-wedge iron, 22-sample slot, 23-empty tool slot, 24-T-bolt, 25-sample, 26-X-axis servo motor, 27-X-axis slide rail, 28-X-axis screw. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0026] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0027] See Figure 1-2 , is a schematic diagram of the structure of a ship plate steel welding sample groove processing device embodiment of the utility model, including a base 1, a column 2, a power box 3, a lifting mechanism 4, a first tool holder 5, a second tool holder 6, a fixture 7 and a workbench 8. The base 1 is connected to the power box 3 through the column 2. The power box 3 is lifted and positioned along the column 2 through the lifting mechanism 4. The power box 3 has two power outputs, namely the first tool holder 5 and the second tool holder 6 distributed in the horizontal direction. The power box 3 has a conventional double-output shaft reduction mechanism inside. The two power outputs are synchronous and in the same direction. Of course, two sets of independent drive systems can also be used to achieve the purpose of the utility model. The workbench 8 is set on the base 1, and the workbench 8 is provided with a fixture 7, which is used to fix the sample 25; a saw blade milling cutter is provided in the first tool holder 5, and a copy milling cutter is provided in the second tool holder 6. The trajectory centers of the saw blade milling cutter and the copy milling cutter are collinear. The workbench 8 moves back and forth along the X-axis slide rail 27 and the X-axis lead screw 28 under the drive of the X-axis servo motor 26 along the X-axis direction.

[0028] The side of the power box 3 is provided with a Y-axis slide rail 9 and a Y-axis lead screw 10. The Y-axis slide rail 9 is provided with a laser marking head 11. One end of the Y-axis lead screw 10 is connected to the Y-axis servo motor 12. The power box 3 can be raised and lowered to adjust the cutting depth. The laser marking head 11 is connected to the control box 13 located on the other side of the power box 3 through a cable. The marking distance of the laser marking head 11 is 300-500mm, and the power is 30W-50W, which can be selected and adjusted according to the situation. An operation panel 14 is provided on the other side of the power box 3 for inputting data and displaying the running coordinates of each axis. The control and data communication between the operation panel 14 and each servo motor has been widely used in CNC machine tools and belongs to the prior art.

[0029] The lifting mechanism 4 includes a Z-axis servo motor 15, a Z-axis guide rail 16 and a Z-axis lead screw 17. The top of the Z-axis lead screw 17 is connected to the Z-axis servo motor 15. The Z-axis guide rail 16 is located on the column 2. The Z-axis guide rail 16 is matched with the slider on the power box 3, and the Z-axis lead screw 17 is engaged with the nut sleeve on the power box 3.

[0030] In order to improve the applicability, the first tool holder 5 and the second tool holder 6 are both tapered shank locking tool holders, which are widely used in CNC machining equipment, have the advantages of flexible disassembly and assembly, and are suitable for various types of tools.

[0031] See Figure 3 The fixture 7 includes a fixture seat 18, a pressure plate 19, a washer 20 and a wedge 21. A sample groove 22 with a length of 200 mm, a width of 200 mm and a depth of 5 mm is provided in the fixture seat 18. An empty knife groove 23 with a width of 5-10 mm and a depth of 10-15 mm is provided in the center of the fixture seat 18 along the length direction. Four pressure plates 19 are symmetrically distributed on both sides of the fixture seat 18. The center of the pressure plate 19 is connected to the T-slot on the workbench 8 through a T-bolt 24. One end of the pressure plate 19 is pressed on the surface edge of the sample 25, and the other end is connected to the workbench 8 through the washer 20 and the wedge 21.

[0032] The groove shape obtained by processing the sample 25 of the embodiment is as follows Figure 4 As shown, the shape of the profile milling cutter head is a 60° triangle, the width of the profile milling cutter head is 10 mm, and the thickness of the saw blade milling cutter is 2.0 mm.

[0033] In the embodiment, the sample 25 is ship plate steel EH36 with a thickness of 10 mm. The periphery is cut by a shearing machine without burrs. The cold-processed sample has high precision and is suitable for batch production, and does not affect the stability of the heat-affected zone in the welding simulation test.

[0034] When the embodiment of the utility model is working, the operator first places the sample 25 blank into the sample slot 22 of the fixture 7, adjusts the position of the fixture 7 on the workbench 8, so that the center line on the sample is in line with the trajectory center of the saw blade milling cutter and the copy milling cutter, and uses the pressure plate 19 to position and fix it, then the X-axis servo motor 26 is turned on, so that the saw blade milling cutter and the copy milling cutter are both located at the starting side of the sample processing, the power box 3 moves down, so that the saw blade milling cutter and the copy milling cutter retain a cutting amount of 1-3mm, and the X-axis servo motor 26 is started again, and the sample is cut in the order of the saw blade milling cutter first and the copy milling cutter later, and it is repeated 3-5 times, with a total cutting depth of 10mm, and the groove is formed. During the cutting process, the coolant needs to be continuously cooled. After cutting, the height of the lifting mechanism is kept unchanged, and the laser marking head 11 is started to laser mark the sampling point mark on the sample. After completion, the lifting mechanism 4 moves up, the wedge 21 of the fixed pressure plate is removed, and the sample can be removed.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship plate steel welding specimen groove processing device, characterized in that: It includes a base, a column, a power box, a lifting mechanism, a first tool holder, a second tool holder, a fixture and a workbench. The base is connected to the power box through the column. The power box is lifted and positioned along the column through the lifting mechanism. The first tool holder and the second tool holder are arranged in the horizontal direction on the power box. The workbench is arranged on the base, and the fixture is arranged on the workbench. The first tool holder is arranged in the first tool holder, and the second tool holder is arranged in the second tool holder. The trajectory centers of the saw blade milling cutter and the copying milling cutter are collinear. The workbench reciprocates along the X-axis direction driven by the X-axis servo motor.

2. A ship plate steel welding specimen groove processing device according to claim 1, characterized in that: The fixture includes a fixture seat, a pressure plate, a shim and a wedge. A sample groove is provided in the fixture seat. An empty knife groove with a width of 5-10mm and a depth of 10-15mm is provided in the center of the fixture seat along the length direction. Four pressure plates are symmetrically distributed on both sides of the fixture seat. The center of the pressure plate is connected to the T-slot on the workbench through a T-bolt. One end of the pressure plate is pressed on the surface edge of the sample, and the other end is connected to the workbench through the shim and the wedge.

3. A ship plate steel welding specimen groove processing device according to claim 1, characterized in that: The cutter head of the profiling milling cutter is in a 60° triangle or U shape, and the width of the cutter head of the profiling milling cutter is 10 mm.

4. A ship plate steel welding specimen groove processing device according to claim 1, characterized in that: The thickness of the saw blade milling cutter is 2-3 mm.

5. The ship plate steel welding specimen groove processing device according to claim 1, characterized in that: A Y-axis slide rail and a Y-axis lead screw are provided on the side of the power box, a laser marking head is provided on the Y-axis slide rail, one end of the Y-axis lead screw is connected to the Y-axis servo motor, and the laser marking head is connected to the control box on the other side of the power box through a cable. The marking distance of the laser marking head is 300-500mm and the power is 30W-50W.

6. A ship plate steel welding specimen groove processing device according to claim 2, characterized in that: The sample is ship plate steel EH36, with a thickness of 10 mm, and is cut by a shearing machine without burrs on the periphery.

7. The ship plate steel welding specimen groove processing device according to claim 1, characterized in that: The first tool seat and the second tool seat are both tapered shank locking tool seats.

8. The ship plate steel welding specimen groove processing device according to claim 1, characterized in that: The lifting mechanism includes a Z-axis servo motor, a Z-axis guide rail and a Z-axis lead screw. The top of the Z-axis lead screw is connected to the Z-axis servo motor. The Z-axis guide rail is located on the column. The Z-axis guide rail is matched with a slider on the power box. The Z-axis lead screw is engaged with a nut sleeve on the power box.

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