A device for electric spark scratching on the surface of flaw detection sample tube

Abstract

The present invention discloses a device for electric spark scratching on the surface of a flaw detection sample tube, comprising a base and a scratching electrode sheet, wherein a lifting mechanism capable of driving the scratching electrode sheet to be lifted and lowered along the base is provided on the base, and a positioning mechanism capable of fixing the sample tube is provided at the lower end of the base, wherein the positioning mechanism comprises at least two positioning components arranged on both sides of the scratching electrode sheet, and each positioning component comprises a bracket, a positioning block and an adjusting mechanism capable of driving the positioning block to move horizontally and swing along the bracket to both sides. The present invention can effectively fix the flaw detection sample tube by adjusting the position and tilt angle of the positioning block in each positioning component, and can also be applied to the inner wall and outer wall surface processing requirements of the flaw detection sample tube at the same time, has a wide range of application, and is highly practical, thereby avoiding displacement or shaking of the sample tube during the scratching process, and improving the scratching accuracy and quality.

Description

Technical Field

[0001] The invention belongs to the technical field of electric spark machining machine tools, and in particular relates to an electric spark scratching device for the surface of a flaw detection sample tube. Background Art

[0002] When manufacturing and producing steel pipe products, standard sample tubes are used to debug flaw detection equipment and determine flaw detection results. It is necessary to machine grooves on the surface of the standard sample tube using a scoring device (electric spark machining method). Existing flaw detection sample tubes, especially cylindrical sample tubes, are prone to displacement or shaking during the scoring process, resulting in errors in the scoring accuracy, thereby affecting the final flaw detection results. Therefore, it is urgent to improve the structure of the existing flaw detection sample tube surface scoring device so that the sample tube can be effectively fixed to prevent the sample tube from being displaced or shaken during the scoring process, thereby improving the scoring accuracy and quality. Summary of the invention

[0003] In view of the deficiencies in the background technology, the present invention provides a device for electric spark scratching on the surface of a flaw detection sample tube, which can effectively fix the sample tube to prevent displacement or shaking of the sample tube during the scratching process, thereby improving the scratching accuracy and quality.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A device for electric spark scratching on the surface of a flaw detection sample tube, characterized in that it includes a base and a scratching electrode sheet, the base is provided with a lifting mechanism that can drive the scratching electrode sheet to move up and down along the base, the lower end of the base is provided with a positioning mechanism that can fix the sample tube, the positioning mechanism includes at least two positioning components arranged on both sides of the scratching electrode sheet, each of the positioning components includes a bracket, a positioning block and an adjustment mechanism that drives the positioning block to move horizontally and swing along the bracket to both sides.

[0006] Preferably, the number of the positioning components is four, and the four positioning components are respectively located at the four vertex corners of the base.

[0007] Preferably, the adjustment mechanism includes a rotating shaft, a rocker arm, a slide and an adjustment component that drives the slide to slide horizontally along the bracket. The lower end of the slide is hinged to the rocker arm, the lower end of the rocker arm passes through the rotating shaft and is connected to the positioning block. The rotating shaft is horizontally arranged and rotatably connected to the bracket.

[0008] Preferably, the adjustment assembly includes an adjustment screw and a first slide rail horizontally arranged on the bracket, the adjustment screw is rotatably connected to the bracket and is threadedly connected to the slide seat, and the slide seat is slidably connected to the first slide rail.

[0009] Preferably, the slide seat includes a first slider and a connecting piece with a waist-shaped hole in the middle, the first slider is provided with a limiting groove, the connecting piece is located in the limiting groove, and its waist-shaped hole is matched and connected with the adjusting screw, and the lower end of the connecting piece is hinged to the rocker arm.

[0010] Preferably, an upper adjusting nut and a lower adjusting nut are threadedly connected to the swing rod, and the upper adjusting nut and the lower adjusting nut are respectively located on the upper and lower sides of the rotating shaft.

[0011] Preferably, the lifting mechanism includes a motor, a lead screw, a sleeve, a slider and a second slide rail. The lead screw is vertically rotatably installed on the base, and its top end is connected to the motor. The external thread of the lead screw is connected to a sleeve, and the sleeve is connected to the second slider. The second slider is slidably connected to the second slide rail provided on the base, and the engraved electrode sheet is provided at the bottom end of the sleeve.

[0012] Preferably, the second sliding block cooperates with an upper travel switch and a lower travel switch arranged on one side of the second sliding rail.

[0013] Preferably, a large synchronous wheel is connected to the top end of the lead screw, a small synchronous wheel is connected to the top end of the motor, and a synchronous belt is connected between the large synchronous wheel and the small synchronous wheel.

[0014] Preferably, a protective cover is provided at the upper end of the base, and the protective cover is sleeved on the outside of the lifting mechanism.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can effectively fix the flaw detection sample tube by adjusting the position and inclination angle of the positioning block in each positioning component, and can also be applied to the inner wall and outer wall surface processing requirements of the flaw detection sample tube. It has a wide range of applications and strong practicality, thereby avoiding displacement or shaking of the sample tube during the scoring process and improving the scoring accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the positioning component of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0021] Figure 5It is a schematic diagram of the connection structure of the connecting member, the swing rod and the rotating shaft of the present invention;

[0022] In the figure: 1, base, 2, scored electrode sheet, 3, bracket, 4, positioning block, 5, rotating shaft, 6, rocker, 601, slot, 7, slide seat, 701, first slider, 7011, limit slot, 702, connector, 7021, waist-shaped hole, 8, adjusting screw, 9, first slide rail, 10, upper adjusting nut, 11, lower adjusting nut, 12, motor, 13, lead screw, 14, sleeve, 15, slider, 16, second slide rail, 17, upper travel switch, 18, lower travel switch, 19, large synchronous wheel, 20, small synchronous wheel, 21, synchronous belt, 22, protective cover, 23, pin shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it is necessary to understand that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1 As shown, a device for electric spark scratching on the surface of a flaw detection sample tube comprises a base 1 and a scratching electrode sheet 2. The base is provided with a lifting mechanism that can drive the scratching electrode sheet to move up and down along the base, so as to accurately control the position of the scratching electrode sheet according to actual needs to improve the scratching accuracy. Figure 2As shown, the lifting mechanism includes a motor 12, a lead screw 13, a sleeve 14, a slider 15 and a second slide rail 16. The lead screw is vertically rotatably installed on the base, and its top end is connected to the motor. The outer thread of the lead screw is connected to the sleeve, and the sleeve is connected to the second slider. The second slider is slidably connected to the second slide rail arranged on the base. The scratch electrode sheet is arranged at the bottom end of the sleeve. The top end of the lead screw is connected to a large synchronous wheel 19, and the top end of the motor is connected to a small synchronous wheel 20. A synchronous belt 21 is connected between the large synchronous wheel and the small synchronous wheel. The motor drives the small synchronous wheel to rotate, and the small synchronous wheel drives the large synchronous wheel to rotate through the synchronous belt. The large synchronous wheel drives the screw rod to rotate, thereby realizing the lifting and lowering adjustment of the sleeve. In order to improve the working stability, the second slider cooperates with the upper stroke switch 17 and the lower stroke switch 18 arranged on one side of the second slide rail to limit the lifting and lowering stroke of the sleeve. The upper stroke switch, the lower stroke switch, the motor and other components are connected to the control system of the electric spark scratching equipment (not shown in the figure). This embodiment will not be described in detail here. In order to improve the safety and aesthetics of the use of the present invention, a protective cover 22 is provided at the upper end of the base. The protective cover is sleeved on the outside of the lifting mechanism and is assembled and connected to the base with screws or bolts.

[0027] like Figure 1 As shown, a positioning mechanism for fixing the sample tube is provided at the lower end of the base to prevent the sample tube from shaking or shifting during the scoring process and affecting the processing accuracy and quality. The positioning mechanism includes at least two positioning components arranged on both sides of the scoring electrode sheet, each positioning component includes a bracket 3, a positioning block 4 and an adjustment mechanism for driving the positioning block to move horizontally and swing along the bracket to both sides. The positioning block is a permanent magnet or an electromagnet. In this embodiment, the positioning block is an electromagnet, which can adsorb the sample tube after power is turned on. The sample tube in this embodiment is a magnetic metal tube. The adjustment mechanism can adjust the position of the positioning block and its inclination angle to meet the fixing requirements of magnetic metal tubes of various specifications and diameters. There are four positioning components, which are respectively located at the four top corners of the base, and the four positioning components are symmetrically arranged on both sides of the scoring electrode sheet. In actual use, when it is necessary to process the outer wall of the sample tube, the bottom ends of the four positioning components on both sides of the scored electrode sheet can be tilted toward the middle (towards the scored electrode sheet) through the adjustment mechanism, so that the sample tube is adsorbed and clamped; and when it is necessary to process the inner wall of the sample tube, the bottom ends of the four positioning components on both sides of the scored electrode sheet can be tilted toward the outside through the adjustment mechanism, so that the sample tube is adsorbed and the positioning block is tightly pressed against the inner wall of the sample tube to achieve fixation.

[0028] like Figure 3 and Figure 4As shown, the adjustment mechanism includes a rotating shaft 5, a rocker arm 6, a slide 7 and an adjustment component that drives the slide to slide horizontally along the bracket. The lower end of the slide is hinged to the rocker arm, and the lower end of the rocker arm passes through the rotating shaft and is connected to the positioning block. The rotating shaft is horizontally arranged and rotatably connected to the bracket. When the slide is horizontally displaced, the rocker arm and the positioning block will tilt to facilitate the fit with the inner and outer wall surfaces of the sample tube. The adjustment component includes an adjustment screw 8 and a first slide rail 9 horizontally arranged on the bracket. The adjustment screw is rotatably connected to the bracket and threadedly connected to the slide. The slide is slidably connected to the first slide rail. Rotating the adjustment screw causes the slide to slide horizontally along the first slide rail. The slide includes a first slider 701 and a connector 702 with a waist-shaped hole 7021 in the middle. A limiting groove 7011 is provided on the first slider. The connector is located in the limiting groove, and its waist-shaped hole is matched and connected to the adjustment screw. The lower end of the connector is hinged to the rocker arm, as shown in FIG. Figure 5 As shown, a slot 601 is provided at the upper end of the swing rod, and the lower end of the connecting piece is embedded in the slot and rotatably connected with a pin shaft 23. The connecting piece can rotate freely along the pin shaft. The movement of the first slider drives the movement of the connecting piece, and the position of the adjusting screw in the waist-shaped hole changes accordingly. Figure 5 As shown, an upper adjusting nut 10 and a lower adjusting nut 11 are threadedly connected on the swing rod, and the upper adjusting nut and the lower adjusting nut are respectively located on the upper and lower sides of the rotating shaft, which is convenient for adjusting the height of the positioning block and expanding its application range.

[0029] The working principle of the present invention is as follows:

[0030] like Figures 1 to 5 As shown, when in use, first adjust the position and tilt angle of the four positioning blocks 4 according to actual needs. When the outer surface of the sample tube needs to be processed, adjust the adjusting screws 8 of the four positioning components one by one, so that each positioning block 4 moves toward the side close to the scratched electrode sheet 2, and the bottom of the positioning block 4 fits with the outer wall of the sample tube. At this time, the positioning block is in a state of tilting toward the middle position at the bottom, and the electromagnet 4 can tightly absorb and fix the sample tube after being energized; on the contrary, when the inner surface of the sample tube needs to be processed, adjust the adjusting screws 8 of the four positioning components one by one in the opposite direction, so that each positioning block 4 moves away from the scratched electrode sheet 2, and finally the sample tube is absorbed and fixed. Then, the motor 12 drives the lead screw 13 to rotate, control the distance between the scratched electrode sheet 2 and the outer wall or inner wall of the sample tube, and process it. The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that all changes falling within the meaning and range of equivalent elements of the claims are included in the present invention.

Claims

1. A device for electric spark scratching on the surface of a flaw detection sample tube, characterized in that: The invention comprises a base and a notched electrode sheet, wherein the base is provided with a lifting mechanism capable of driving the notched electrode sheet to be lifted and lowered along the base, and the lower end of the base is provided with a positioning mechanism capable of fixing the sample tube, and the positioning mechanism comprises at least two positioning components arranged on both sides of the notched electrode sheet, and each of the positioning components comprises a bracket, a positioning block and an adjusting mechanism for driving the positioning block to move horizontally and swing along the bracket to both sides, and the adjusting mechanism comprises a rotating shaft, a rocker arm, a slide seat and an adjusting component for driving the slide seat to slide horizontally along the bracket, the lower end of the slide seat is hinged with the rocker arm, the lower end of the rocker arm passes through the rotating shaft and is connected to the positioning block, and the rotating shaft The cam is provided with a first adjusting screw and a second adjusting nut, and the second adjusting nut is provided with a first adjusting screw and a second adjusting nut. The first adjusting screw is provided with a first adjusting screw and a second adjusting nut, and the first adjusting nut is provided with a second adjusting nut and a second adjusting nut, respectively. The first adjusting screw is provided with a first adjusting screw and a second adjusting nut is provided with a first adjusting screw and a second adjusting nut is provided with a first adjusting nut and a second adjusting nut, respectively.

2. The device for electric spark scratching on the surface of a flaw detection sample tube according to claim 1, characterized in that: There are four positioning components, which are respectively located at four vertex corners of the base.

3. The device for electric spark scratching on the surface of a flaw detection sample tube as claimed in claim 1, characterized in that: The lifting mechanism includes a motor, a lead screw, a sleeve, a slider and a second slide rail. The lead screw is vertically rotatably installed on the base, and its top end is connected to the motor. The outer thread of the lead screw is connected to a sleeve, and the sleeve is connected to the second slider. The second slider is slidably connected to the second slide rail arranged on the base, and the engraved electrode sheet is arranged at the bottom end of the sleeve.

4. The device for electric spark scratching on the surface of a flaw detection sample tube as claimed in claim 3, characterized in that: The second sliding block cooperates with an upper travel switch and a lower travel switch arranged on one side of the second sliding rail.

5. The device for electric spark scratching on the surface of a flaw detection sample tube as claimed in claim 3, characterized in that: The top end of the lead screw is connected with a large synchronous wheel, the top end of the motor is connected with a small synchronous wheel, and a synchronous belt is connected between the large synchronous wheel and the small synchronous wheel.

6. The device for electric spark scratching on the surface of a flaw detection sample tube as claimed in claim 1, characterized in that: A protective cover is arranged on the upper end of the base, and the protective cover is sleeved on the outside of the lifting mechanism.

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