Auxiliary device for adjusting space angle and adjustable laser cladding head

Abstract

The utility model discloses an auxiliary device for adjusting a space angle and an adjustable laser cladding head, mainly aims at the technical field of laser cladding additive manufacturing, and the auxiliary device for adjusting the space angle mainly comprises a locking block, a fixing bolt, a digital display module, a bearing fixing bolt, a bearing, a pointer, a gasket and a conducting strip. The pointer and the bearing are installed in an interference mode, the bearing and the gasket are fixed to the locking block through the bearing fixing bolt, the conducting strip is installed in a circular groove of the locking block, the digital display module is installed on the surface of the locking block, and the locking block is installed on the laser cladding head through the fixing bolt. Through the angle difference between the axis of the laser cladding head and the pointer, the current space angle of the laser cladding head is rapidly obtained, and according to the current space angle displayed by the digital display module, the laser cladding head can be rapidly adjusted to the working required space angle without zero setting, so that the adjusting speed and precision are greatly improved, and the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser additive manufacturing technical field, mainly aiming at laser cladding additive manufacturing technical field, concretely relates to a kind of auxiliary device of quick adjustment laser cladding head space angle. BACKGROUND

[0002] Laser cladding is a kind of efficient surface modification technology, with high-energy laser beam as heat source, metal powder is fused with part of base metal, then rapidly solidified to form the cladding layer that metal powder and base metal are closely combined.The quality of cladding layer is influenced by the change of laser cladding head space angle, and the laser emitted by cladding head of different space angle will affect the performance such as microstructure, wear resistance and hardness of cladding layer.

[0003] At present, there are mainly two kinds of laser cladding head space angle adjustment methods: 1, rely on operator naked eye observation, the efficiency of this laser cladding head space angle adjustment method is high, but precision is poor, and repeatability is poor;2, use computer-aided adjustment, the precision of this adjustment method is high, and repeatability is good, but measurement operation is complex, and efficiency is low. INVENTION CONTENTS

[0004] In order to overcome the problems of poor precision, complex operation and low efficiency of existing laser cladding space angle adjustment technology, the utility model provides a kind of auxiliary device of quick adjustment laser cladding head space angle, the device is through the angle difference between the pointer and the axis of laser cladding head, and the angle difference can assist laser cladding operation before, quickly obtain and adjust the space angle of laser cladding head, and the device is simple and reliable in structure, high in precision and easy to operate.

[0005] The technical scheme adopted by the utility model to solve its technical problems is: an auxiliary device for adjusting space angle, including lock block, locking part arranged on lock block, arc-shaped conductive sheet arranged on the side wall of lock block, conductive pointer in sliding electrical connection with conductive sheet, signal amplifier and power supply;The pointer, conductive sheet, signal amplifier and power supply are connected in series to form a closed loop;The resistance value of conductive sheet changes uniformly with its length;

[0006] When the lock block is relatively rotated on the conductive sheet due to the gravity deflection of the pointer caused by space deflection, the electrical signal of the closed loop is amplified by the signal amplifier and output to the display.

[0007] Preferably, the half of the arc length of the conductive sheet and the pointer are respectively matched with the positive / negative and negative / positive of the power supply, and when the axis of the lock block is vertically upward in space, the pointer is vertically upward and points to the half of the arc length of the conductive sheet.

[0008] Preferably, the side of the lock block is provided with at least one circular groove, and a second threaded hole is formed in the middle of the circular groove, and a bearing fixing bolt, a bearing, a pointer and a gasket are coaxially arranged in the second threaded hole.

[0009] Preferably, the circular groove has two circular grooves which are vertically arranged on the X-axis and Y-axis of the horizontal plane of the lock block.

[0010] Preferably, the conductive sheet is arranged on the inner side wall of the circular groove, and the outer side wall of the circular groove is provided with a scale matched with the arc-shaped conductive sheet, when the axis of the lock block is vertically upward in space, the pointer points to the angle scale 0°, and when the axis of the laser cladding head is at a deflection angle, the pointer has an angle difference with the laser cladding head.

[0011] Preferably, a stop column for limiting the position of the conductive sheet is further arranged on the circular arc of the circular groove.

[0012] Preferably, the adjustment space angle auxiliary device further comprises a conversion circuit, and two ends of the conversion circuit are electrically connected to the signal amplifier and the display respectively.

[0013] Preferably, the lock block is in a square structure.

[0014] The adjustable laser cladding head comprises the above-mentioned adjustment space angle auxiliary device, and further comprises a laser cladding head which is arranged on the lock block through a locking part.

[0015] Preferably, the locking part comprises a fixing bolt and a first threaded hole matched with the fixing bolt, and is used for locking the lock block and the laser cladding head.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: through the angle difference between the axis of the lock block or the laser cladding head and the pointer, the space angle of the current laser cladding head can be quickly obtained, and through the voltage change caused by the different resistance values of the pointer and the conductive sheet when sliding, the angle problem is converted into a voltage problem, the space angle of the laser cladding head is displayed through the digital display module by processing the voltage change, and according to the current space angle displayed by the digital display module, the laser cladding head can be quickly adjusted to the working demand space angle without zero setting, so that the adjustment speed and precision are greatly improved, and the operation difficulty is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of an adjustment space angle auxiliary device according to the present application;

[0018] Figure 2 FIG. 4 is an assembly schematic view of the present application and a laser cladding head;

[0019] Figure 3 FIG. 5 is a schematic view of a lock block structure;

[0020] Figure 4It is a schematic view of the conductive sheet structure.

[0021] Figure 5 It is a sectional view of the lock block.

[0022] Figure 6 It is a circuit diagram of the utility model.

[0023] In the figure: lock block 1, fixing bolt 2, digital display module 3, bearing fixing bolt 4, bearing 5, pointer 6, gasket 7, conductive sheet 8, laser cladding head 9, first threaded hole 10, second threaded hole 11, stop column 12. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to the drawings in the embodiments of the utility model Figures 1-6 The application provides the following technical solutions.

[0026] As Figure 1 and 6 shown, the design of an auxiliary device for adjusting space angle includes lock block 1, locking part arranged on lock block 1, arc conductive sheet 8 arranged on the side wall of lock block 1, conductive pointer 6 in sliding electrical connection with conductive sheet 8, signal amplifier and power supply; pointer 6, conductive sheet 8, signal amplifier and power supply are in series to form a closed loop; the resistance value of conductive sheet 8 changes uniformly with its length; conductive sheet 8 is in contact with the tip of pointer 6, and the displacement is generated by coaxial deflection. Lock block 1 is installed with digital display module 3, when lock block 1 deflects in space to cause the gravity deflection of pointer 6 and relative rotation on conductive sheet 8, preferably the arc length half of conductive sheet 8 and pointer 6 are respectively matched with the positive / negative and negative / positive of power supply in electrical connection, according to R = ρL / S (ρ is material conductivity, L is length, and S is cross-sectional area), the resistance value of conductive sheet 8 is in linear relationship with its length, and different angle differences make the sliding length of pointer 6 and conductive sheet 8 different, so that different resistance values can be obtained by sliding different lengths.

[0027] When the axis of the lock block 1 is vertically upward in space, the pointer 6 is vertically upward and points to the conductive sheet 8 at the half of the arc length. In addition, a conversion circuit is further included, two ends of the conversion circuit are electrically connected to a signal amplifier and a display respectively, wherein the conversion circuit, the signal amplifier and the display are all common in the prior art and will not be described here again, the signal amplifier converts an analog signal into a digital signal through an A / D conversion circuit, wherein the display is internally provided with a digital display module 3, the digital signal is displayed on the digital display module 3 after processing to show the spatial angle numerical result of the laser cladding head 9, according to the spatial angle numerical value displayed by the digital display module 3, the lock block 1 and the laser cladding head 9 are adjusted to the working requirement angle, so that the spatial angle adjustment work of the laser cladding head 9 is completed.

[0028] As shown in Figure 3 and 5 , the side surface of the lock block 1 is provided with at least one circular groove, and the circular groove has two, which are vertically located on the X-axis and Y-axis directions of the horizontal plane of the lock block 1. And the middle part of the circular groove is provided with a second threaded hole 11, and the bearing fixing bolt 4, the bearing 5, the pointer 6 and the gasket 7 are coaxially installed in the second threaded hole 11. The pointer 6 is installed on the bearing 5 in interference, and the bearing 5 makes the pointer 6 have higher deflection accuracy and sensitivity. The lock block 1 is provided with a first threaded hole 10 and a second threaded hole 11, the fixing bolt 2 is connected with the first threaded hole 10, and the bearing fixing bolt 4 is connected with the second threaded hole 11.

[0029] Among them, the conductive sheet 8 is installed on the inner side wall of the circular groove, the shape of the conductive sheet 8 and the circular groove constitute a concentric circular arc, and the circular arc of the circular groove is further provided with a stop column 12 for limiting the position of the conductive sheet 8. The outer side wall of the circular groove matched with the arc-shaped conductive sheet 8 is provided with a scale, when the axis of the lock block 1 is vertically upward in space, the pointer 6 points to the angle scale 0°, when the axis of the laser cladding head 9 is the deflection angle, the pointer 6 and the laser cladding head 9 produce an angle difference; the conductive sheet 8 is in contact with the tip of the pointer 6, and the displacement caused by coaxial deflection.

[0030] As shown in Figure 2 , the lock block 1 of the embodiment is a square structure, and is not limited to a square structure, and a laser cladding head is provided, which comprises the above-mentioned auxiliary device for adjusting the spatial angle, and further comprises a laser cladding head installed on the lock block 1 through a locking part. The lock block 1 is installed on the laser cladding head 9 through the fixing screw 2. The locking part comprises the fixing bolt 2 and the first threaded hole 10 matched and connected with the fixing bolt 2, for locking the lock block 1 and the laser cladding head 9. The spatial angle deflection of the laser cladding head 9 drives the deflection of the lock block 1, the lock block 1 drives the deflection of the conductive sheet 8, the pointer 6 remains vertically pointing due to gravity, the conductive sheet 8 produces relative sliding displacement with the pointer 6 when deflected, and the length of the sliding displacement is linearly related to the deflection angle.

[0031] When the axis of the laser cladding head 9 is vertically upward in space, the pointer 6 points to the angle scale 0°. When the axis of the laser cladding head 9 is deflected, the pointer 6 and the laser cladding head 9 produce an angle difference. At this time, the pointer 6 slides from 0° on the angle scale to the angle difference value. The angle difference value is the deflection angle of the laser cladding head 9 in one direction in space.

[0032] like Figure 4 As shown, according to R=ρL / S (ρ is the material conductivity, L is the length, and S is the cross-sectional area), the resistance value of the conductive sheet 8 is linearly related to its length. Different angle differences cause the pointer 6 to slide along different lengths relative to the conductive sheet 8, thus different resistance values ​​can be obtained by sliding different lengths. Connecting half the arc length of the conductive sheet 8 to the positive terminal of the power supply and the pointer 6 to the negative terminal, the different angle differences in resistance cause voltage changes. These voltage changes are amplified by a signal amplifier for better transmission, and then converted from analog to digital signals by an A / D conversion circuit. The processed digital signals are displayed on the digital display module 3, showing the spatial angle value of the laser cladding head 9. Based on the spatial angle value displayed on the digital display module 3, the laser cladding head 9 is adjusted to the required working angle, thus completing the spatial angle adjustment of the laser cladding head 9.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for adjusting a spatial angle, characterized in that It includes a locking block (1), a locking member set on the locking block (1), an arc-shaped conductive sheet (8) set on the side wall of the locking block (1), a conductive pointer (6) that is electrically connected to the conductive sheet (8), a signal amplifier and a power supply; the pointer (6), the conductive sheet (8), the signal amplifier and the power supply are connected in series to form a closed loop; the resistance value on the conductive sheet (8) changes uniformly with its length; When the lock block (1) deflects in space, causing the pointer (6) to deflect due to gravity and rotate relative to the conductive sheet (8), the electrical signal of the closed circuit is amplified by the signal amplifier and transmitted to the display.

2. The adjustment of the spatial angle of the auxiliary device according to claim 1, characterized in that: The conductive sheet (8) and the pointer (6) are electrically connected to the positive / negative and negative / positive terminals of the power supply, respectively. When the axis of the locking block (1) is vertically upward in space, the pointer (6) is vertically upward and points to the half-length of the conductive sheet (8).

3. The adjustment of the spatial angle of the auxiliary device according to claim 2, characterized in that: The side of the locking block (1) has at least one circular groove, and the center of the circular groove has a second threaded hole (11). The bearing fixing bolt (4), bearing (5), pointer (6) and washer (7) are coaxially installed in the second threaded hole (11).

4. The adjustment of the spatial angle of the auxiliary device according to claim 3, characterized in that: There are two circular grooves, which are located vertically on the X-axis and Y-axis of the horizontal plane of the lock block (1), respectively.

5. The adjustment of the spatial angle of the auxiliary device according to claim 4, characterized in that: The conductive sheet (8) is installed on the inner side wall of the circular groove, and the outer side wall of the circular groove is matched with the arc-shaped conductive sheet (8) with a scale. When the axis of the locking block (1) is vertically upward in space, the pointer (6) points to the angle scale 0°. When the axis of the laser cladding head (9) is deflected, the pointer (6) and the laser cladding head (9) produce an angle difference.

6. The adjustment of the spatial angle of the auxiliary device according to claim 3, characterized in that: The circular groove is also provided with a stop post (12) to limit the position of the conductive sheet (8).

7. The adjustment of the spatial angle of the auxiliary device according to claim 6, characterized in that: It also includes a conversion circuit, the two ends of which are electrically connected to the signal amplifier and the display, respectively.

8. The adjustment of the spatial angle of the auxiliary device according to claim 6, characterized in that: The locking block (1) has a square structure.

9. A tunable laser cladding head comprising the auxiliary device for adjusting the spatial angle according to any one of claims 1-8, characterized in that, It also includes a laser cladding head mounted on the lock block (1) via a locking element.

10. The adjustable laser cladding head of claim 9, wherein: The locking component includes a fixing bolt (2) and a first threaded hole (10) that mates with it, for locking the locking block (1) and the laser cladding head (9).

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