CN213364198U - Laser focal length positioning and measuring device - Google Patents
Laser focal length positioning and measuring device Download PDFInfo
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- CN213364198U CN213364198U CN202022367366.6U CN202022367366U CN213364198U CN 213364198 U CN213364198 U CN 213364198U CN 202022367366 U CN202022367366 U CN 202022367366U CN 213364198 U CN213364198 U CN 213364198U
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Abstract
The utility model provides a laser focus location measuring device, include: the positioning part and the measuring part are connected; the positioning element is provided with a positioning core, and the positioning core is provided with a first tip part which is used for contacting with a characteristic positioning point on the workpiece so as to realize the positioning of the laser selection area on the workpiece; the first end of measuring the piece with the one end that first pointed end portion was kept away from to the location core is connected, the second end of measuring the piece is connected with the laser head, just be provided with the scale on the measuring piece, be used for right the focus of laser head is surveyed. In the utility model, the positioning piece and the measuring piece are connected into a whole, and the positioning core of the positioning piece is provided with a first tip part, thereby providing a point-to-point positioning condition; the focal length is measured by the measuring piece, so that the positioning and the measurement are integrated, the laser focusing operation is simplified, errors caused by overlapping operation when a plurality of parts are measured and positioned are reduced, and the accuracy of positioning and measuring the selective laser melting focal length is greatly improved.
Description
Technical Field
The utility model relates to a laser election district melts route programming technical field particularly, relates to a laser focus location measuring device.
Background
The metal tungsten is an important refractory metal, has excellent performances of high temperature resistance, high-energy particle erosion resistance and the like, and has important application prospect in the extreme environment of the nuclear industry. For example, tungsten and its alloys can be used as the plasma-facing material for the first wall of a nuclear fusion device, divertors, restrictors, etc., but tungsten has a high melting point and low temperature brittleness, making it difficult to produce by conventional casting and machining methods. Most tungsten material parts are prepared by a powder metallurgy method, but in practical application, the structures of tungsten material parts such as a first wall, a divertor, a limiter and the like are often complex and have the characteristics of curved surfaces, bent pipelines, holes, grooves and the like, and the traditional powder metallurgy method is difficult to realize.
In recent years, a rapidly developed laser additive manufacturing technology is to melt metal powder by using a high-energy heat source and realize the manufacturing of a tungsten layer by a method of stacking layer by layer on the surface of a part, and has the advantages of no mould and near-net forming.
However, the selective laser melting requires a large laser focal length, and meanwhile, the laser spot path travels accurately when accumulation operation is required, the precision is generally +/-0.1 mm, the common path teaching cannot meet the requirement, even offline programming is required, the laser spot size needs to be quantized, and great difficulty exists in measurement and positioning of the laser focal length. The existing laser positioning mostly adopts a simple auxiliary means, and has the problems of poor positioning precision, incapability of realizing focal length measurement and the like.
Disclosure of Invention
In view of this, the utility model provides a laser focus location measuring device aims at solving the lower problem of current laser positioning device location and measurement accuracy.
The utility model provides a laser focus location measuring device, include: the positioning part and the measuring part are connected; the positioning element is provided with a positioning core, and the positioning core is provided with a first tip part and is used for contacting with a characteristic positioning point on a workpiece so as to position a laser selection area on the workpiece;
the first end of measuring the piece with the one end that first pointed end portion was kept away from to the location core is connected, the second end of measuring the piece is connected with the laser head, just be provided with the scale on the measuring piece, be used for right the focus of laser head is surveyed.
Further, in the above laser focal length positioning and measuring device, the positioning member includes: positioning the core and sleeve member; the positioning core is slidably sleeved at the first end of the sleeve part, the first end of the positioning core is provided with a first tip part, the first tip part extends out of the sleeve part, and one end, far away from the first tip part, of the positioning core is arranged in the sleeve part; the second end of the sleeve member is connected to the measuring member.
Further, in the above laser focal length positioning and measuring device, the positioning core includes: the first tip part, the first rod-shaped part and the second rod-shaped part are connected; the first tip part is in a cone shape, and a limiting part is arranged at the joint of the first rod-shaped part and the second rod-shaped part and used for limiting the displacement of the positioning core in the sleeve part.
Further, in the above laser focal length positioning and measuring device, the first rod-shaped portion and the second rod-shaped portion are both of a columnar structure, and the diameter of the second rod-shaped portion is larger than that of the first rod-shaped portion, so that the limiting portion is formed at the connection position of the second rod-shaped portion and the first rod-shaped portion.
Further, in the above laser focal length positioning and measuring device, the sleeve member includes: the clamping cap and the core barrel are connected; the clamping cap is of a cylindrical structure with openings at two ends, the first end of the clamping cap is of a necking structure, and the second end of the clamping cap is connected with the core barrel in a sleeved mode; the first end of the core barrel is sleeved at the second end of the clamping cap, an accommodating cavity is formed in the core barrel close to the first end, and the accommodating cavity is used for accommodating one end, far away from the first tip end, of the positioning core; the second end of the core barrel is provided with a groove, and the groove is used for being connected with the measuring piece.
Furthermore, in the above laser focal length positioning and measuring device, an annular groove is provided on the outer wall of the core barrel near the first end, for being in threaded connection with the clamp cap.
Further, in the above laser focal length positioning and measuring device, the positioning member further includes: a buffer elastic member; the first end of the buffering elastic part is in contact with the second end of the positioning core, the second end of the buffering elastic part is in butt joint with the wall surface of the sleeve part, and the first tip of the positioning core is prevented from scratching the surface of the workpiece.
Furthermore, in the above laser focal length positioning and measuring device, the measuring member includes a plurality of telescopic graduated scales sleeved in sequence.
Further, the above laser focal length positioning and measuring device further includes: positioning an auxiliary member; wherein the content of the first and second substances,
the positioning auxiliary part is provided with at least one second tip part, the positioning auxiliary part is detachably arranged in a laser selection area on the workpiece, and the second tip part of the positioning auxiliary part is contacted with the first tip part of the positioning part.
Further, the above laser focal length positioning and measuring device further includes: a connecting seat; the laser head measuring device comprises a laser head, a measuring piece, a connecting seat and a connecting seat, wherein the connecting seat is provided with a clamping groove for being connected with the measuring piece, and a plurality of connecting holes are formed in the periphery of the clamping groove for being connected with the laser head.
The utility model provides a laser focus positioning and measuring device, which connects a positioning piece and a measuring piece into a whole, wherein a positioning core of the positioning piece is provided with a first tip part, thus providing a point-to-point positioning condition; the focal length is measured by the measuring piece, so that the positioning and the measurement are integrated, the laser focusing operation is simplified, errors caused by overlapping operation when a plurality of parts are measured and positioned are reduced, and the accuracy of positioning and measuring the selective laser melting focal length is greatly improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a laser focal length positioning and measuring device provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, the utility model discloses laser focus location measuring device includes: the positioning piece 1 and the measuring piece 2 are connected; the positioning element 1 is provided with a positioning core 11, and the positioning core 11 is provided with a first tip part 111 for contacting with a characteristic positioning point on a workpiece so as to position a laser selection area on the workpiece; the first end of measuring part 2 with the one end that first pointed end portion 111 was kept away from to location core 11 is connected, the second end of measuring part 2 is connected with the laser head, just be provided with the scale on the measuring part 2, be used for right the focus of laser head is surveyed.
Particularly, setting element 1 can be dismantled with measuring part 2 and be connected, and the two can be through threaded connection, and measuring part 2's second end (the right-hand member shown in the picture) is connected with the laser head, and the during operation fixes the laser head and carries out the location and the measurement of laser focus on the manipulator, because setting element 1, measuring part 2 and laser head link to each other, consequently, setting element 1 and measuring part 2 carry out the location measurement under the drive of manipulator.
Obviously, in this embodiment, the method may further include: a connecting seat 3; the connecting seat 3 is provided with a clamping groove for being connected with the measuring part 2, and a plurality of connecting holes are formed around the clamping groove for being connected with the laser head. Wherein, connecting seat 3 can be circular, square isotructure, and the draw-in groove can be the thread groove, can set up a thread groove at the middle part of connecting seat 3 to realize measuring 2 and connecting seat 3's threaded connection, a plurality of connecting holes can be seted up around connecting seat 3, in order to fix mutually with the laser head through the bolt.
The positioning element 1 is provided with a positioning core 11 having a first tip 111, and is driven by a manipulator to contact with a characteristic positioning point on a workpiece to realize positioning operation.
The measuring part 2 is provided with scales, and the distance between the laser head and the workpiece, namely the focal length of the laser head, can be measured after the positioning part 1 positions the laser selection area of the workpiece.
Preferably, the measuring member 2 comprises a plurality of telescopic scales 21 which are sequentially sleeved with each other. The number of the sections of the telescopic graduated scale is more than or equal to 1, and the scale unit can be accurate to 0.5 mm. The telescopic measuring piece is adopted, so that the positioning of various laser heads and paths and the measurement of different focal lengths can be realized, and the application range is wider.
More specifically, each section of the telescopic graduated scale 21 is of a hollow structure with an opening at the top, so that the telescopic graduated scale 21 adjacent to the section of the telescopic graduated scale is sleeved with the telescopic graduated scale 21 adjacent to the section of the telescopic graduated scale.
The scale display of the measuring part 2 can be determined according to actual needs, can be scale values displayed on a plurality of sections of telescopic scales accumulated, and can also be scale units displayed in a grading manner from small to large according to the telescopic scales, for example, the scale displayed on the telescopic scale with the smallest caliber is in the mm grade, the scale displayed on the telescopic scale on the outer layer is 1-3cm, and the scale displayed on the telescopic scale on the outer layer is 3-10 cm.
Taking the number of the sections of the telescopic graduated scale equal to 3 as an example, the specific measurement value of the focal length is as follows: the length L1 (fixed value) of the positioning member 1, the length L2 of the measuring member 2 and the thickness L3 (fixed value) of the connecting seat 3, wherein the length L2 of the measuring member 2= reading LN1 of the first section of the telescopic scale, reading LN2 of the second section of the telescopic scale and reading LN3 of the third section of the telescopic scale.
The measuring part 2 can be made of rigid materials, and the scale is prevented from being deformed and inaccurate in measurement and positioning due to the fact that the scale cannot support the weight of the positioning part 1 in the telescopic process.
As is apparent from the above description, in the laser focal length positioning and measuring device provided in this embodiment, the positioning element 1 and the measuring element 2 are connected into a whole, and the positioning core 11 of the positioning element 1 has the first tip portion 111, which provides a point-to-point positioning condition; the focal length is measured by the measuring part 2, so that the positioning and the measurement are integrated, the laser focusing operation is simplified, errors caused by overlapping operation when a plurality of parts are measured and positioned are reduced, and the accuracy of positioning and measuring the selective laser melting focal length is greatly improved.
With continued reference to fig. 1, in the above embodiment, the positioning member 1 includes: positioning the core 11 and the sleeve member 12; the first tip 111 is slidably sleeved at the first end of the sleeve member 12, the first end of the centering core is provided with the first tip 111, the first tip 111 extends out of the sleeve member 12, and one end of the positioning core 11 away from the first tip 111 is arranged inside the sleeve member 12; the second end of the sleeve element 12 is connected to the measuring element 2.
Specifically, one end of the positioning core 11 close to the workpiece is provided with a first tip portion 111, and the first tip portion 111 may be a conical structure, and the smaller the radius of the conical structure, the better, i.e. the smaller the focal length positioning point, the easier it is to achieve accurate positioning.
The first end of the sleeve member 12 has a cavity, and the positioning core 11 is sleeved in the cavity; the second end of the sleeve member 12 has a recess for attachment to the measuring member 2.
Preferably, the positioning core 11 comprises: a first tip portion 111, a first rod portion 112, and a second rod portion 113 connected; the first tip 111 is in a cone shape, and a joint of the first rod 112 and the second rod 113 is provided with a limiting portion for limiting displacement of the positioning core 11 in the sleeve 12.
Specifically, the cone tip (the end having a smaller diameter) of the cone-like structure of the first tip portion 111 is disposed toward the workpiece. The first tip portion 111, the first rod portion 112, and the second rod portion 113 may be integrally formed.
More specifically, the second rod-shaped portion 113 and the first rod-shaped portion 112 are both of a cylindrical structure, and the diameter of the second rod-shaped portion 113 is larger than that of the first rod-shaped portion 112, so that the position limiting portion is formed at the joint of the second rod-shaped portion 113 and the first rod-shaped portion 112, and the positioning core 11 can be prevented from sliding out of the sleeve member 12.
In the above embodiment, the sleeve member 12 includes: the connected snap cap 121 and the cartridge 122; the clamping cap 121 is a cylindrical structure with openings at two ends, a first end of the clamping cap 121 is a necking structure, and a second end of the clamping cap 121 is in sleeve connection with the core barrel 122; the first end of the core barrel 122 is sleeved at the second end of the clamping cap 121, and an accommodating cavity is formed inside the core barrel 122 close to the first end, and is used for accommodating one end of the positioning core 11 far away from the first tip part 111; the second end (right end in the figure) of the cartridge 122 is provided with a groove for connecting with the measuring part 2.
Specifically, the locking cap 121 may be formed by connecting a conical cylinder section and a straight cylinder section, wherein the end with the smaller diameter of the conical cylinder section is a reduced opening, the reduced opening is disposed toward the first tip 111 of the positioning core 11, and the opening of the reduced opening is greater than the aperture of the first rod 112 and smaller than the aperture of the second rod 113 of the positioning core 11, so as to limit the positioning core 11; the second rod portion 113 of the positioning core 11 abuts against the bottom wall of the core barrel 122 so as to be stably received in the core barrel 122.
The diameter of the part of the cartridge 122 close to the first end (the left end in the figure) is smaller than that of the straight cylinder section of the clamping cap 121, and an annular groove is arranged on the outer wall of the cartridge 122 close to the first end for being in threaded connection with the clamping cap 121; the diameter of the part (the side far away from the annular groove) of the core cylinder 122 close to the second end is equal to the diameter of the straight cylinder section of the clamping cap 121, and the end surface of the second end of the core cylinder 122 is provided with a groove and can be connected with the measuring part 2 through threads.
In this embodiment, the positioning core 11, the locking cap 121, and the core barrel 122 are coaxially disposed, which is beneficial to improving the positioning accuracy.
In the above embodiments, in order to prevent the first tip 111 of the positioning core 11 from colliding with the workpiece during the positioning process, the positioning member 1 is further provided with a buffering elastic member 13; the first end of the elastic buffer element 13 contacts with the second end of the positioning core 11, and the second end of the elastic buffer element 13 abuts against the wall surface of the sleeve 12, so as to prevent the first tip 111 of the positioning core 11 from scratching the surface of the workpiece.
Specifically, the buffer elastic member 13 may be a spring, and the elastic force of the buffer spring member 13 causes the positioning core 11 to slide in the constricted portion of the card cap 121 in the axial direction thereof. The buffer spring tightly pushes the positioning core 11 and the clamping cap 121 in a free state, and when the positioning core 11 is acted by external force, the positioning core can contract along the axial direction of the clamping cap 121 under the action of the spring, so that the workpiece is prevented from being damaged. Wherein the distance of contraction of the positioning core 11 depends on the size of the positioning core 11 and the elastic deformation of the spring. In this embodiment, the elastic buffer member in the positioning member 1 may be made of a metal material; the positioning core 11 and the sleeve member 12 can be made of metal material or plastic material, so that the weight and the cost are reduced, the action component can be prevented from being damaged due to collision of the tip of the positioning core 11 on the surface of the action component, and in addition, the light and attractive effect can be achieved.
In the above embodiment, the method further includes: positioning aids (not shown); the positioning auxiliary member has at least one second tip, the positioning auxiliary member is detachably disposed in the laser selection area on the workpiece, and one of the second tips of the auxiliary positioning member 1 is in contact with the first tip 111 of the positioning member 1.
Specifically, the positioning aid has at least one feature location point with known coordinates, i.e., a surface having at least one protruding tip, for locating a laser selected area of the workpiece lacking the feature location point.
Preferably, the positioning auxiliary member may be a cone, a tip of the cone is a second tip, and the second tip contacts with the first tip 111 of the positioning member 1, so as to facilitate positioning of the auxiliary positioning member 1 when there is no characteristic positioning point on the workpiece. Taking a rod-shaped workpiece as an example, positioning auxiliary parts can be designed at two ends of the rod-shaped workpiece, the auxiliary parts are conical bodies, the diameter of the bottom end of each conical body is the same as that of the workpiece, so that the uniform coordinate and accurate positioning are facilitated, and the other end of each conical body is designed to be a tip so that the tip of the positioning core 11 can be conveniently collected and positioned.
In summary, in the laser focus positioning and measuring device provided in this embodiment, the positioning element and the measuring element are connected into a whole, and the positioning core of the positioning element has the first tip portion, which provides a point-to-point positioning condition; the focal length is measured by the measuring part, so that the positioning and the measurement are integrated, the operation of laser focusing is simplified, errors caused by overlapping operation when a plurality of parts are measured and positioned are reduced, and the accuracy of positioning and measuring the selective laser melting focal length is greatly improved; furthermore, the telescopic measuring piece is adopted, the positioning of various laser heads and paths and the measurement of different focal lengths can be realized, and the application range is wider.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A laser focus positioning measurement device, comprising: the positioning part and the measuring part are connected; wherein the content of the first and second substances,
the positioning piece is internally provided with a positioning core, and the positioning core is provided with a first tip part which is used for contacting with a characteristic positioning point on a workpiece so as to realize the positioning of a laser selection area on the workpiece;
the first end of measuring the piece with the one end that first pointed end portion was kept away from to the location core is connected, the second end of measuring the piece is connected with the laser head, just be provided with the scale on the measuring piece, be used for right the focus of laser head is surveyed.
2. The laser focal length positioning and measuring device of claim 1, wherein the positioning member comprises: positioning the core and sleeve member; wherein the content of the first and second substances,
the positioning core is sleeved at the first end of the sleeve part in a sliding manner, a first tip part is arranged at the first end of the positioning core, the first tip part extends out of the sleeve part, and one end, far away from the first tip part, of the positioning core is arranged in the sleeve part;
the second end of the sleeve member is connected to the measuring member.
3. The laser focal length positioning measurement device of claim 2, wherein the positioning core comprises: the first tip part, the first rod-shaped part and the second rod-shaped part are connected; wherein the content of the first and second substances,
the first tip part is in a conical shape, and a limiting part is arranged at the joint of the first rod-shaped part and the second rod-shaped part and used for limiting the displacement of the positioning core in the sleeve part.
4. The laser focal length positioning and measuring device of claim 3, wherein the first rod-shaped part and the second rod-shaped part are both columnar structures, and the diameter of the second rod-shaped part is larger than that of the first rod-shaped part, so that the limiting part is formed at the joint of the second rod-shaped part and the first rod-shaped part.
5. The laser focal length positioning measurement device of claim 2, wherein the sleeve member comprises: the clamping cap and the core barrel are connected; wherein the content of the first and second substances,
the clamping cap is of a cylindrical structure with openings at two ends, the first end of the clamping cap is of a necking structure, and the second end of the clamping cap is connected with the core barrel in a sleeved mode;
the first end of the core barrel is sleeved at the second end of the clamping cap, an accommodating cavity is formed in the core barrel close to the first end, and the accommodating cavity is used for accommodating one end, far away from the first tip end, of the positioning core;
the second end of the core barrel is provided with a groove, and the groove is used for being connected with the measuring piece.
6. The laser focal length positioning and measuring device of claim 5, wherein an annular groove is formed in the outer wall of the core barrel near the first end for threaded connection with the clamping cap.
7. The laser focal length positioning and measuring device of claim 2, wherein the positioning member further comprises: a buffer elastic member; wherein the content of the first and second substances,
the first end of buffering elastic component with the second end of location core contacts, the second end of buffering elastic component with the wall looks butt of cover barrel spare is used for preventing the first pointed end of location core is right the surface of work piece causes the scratch and decreases.
8. The laser focal length positioning and measuring device of claim 1, wherein the measuring member comprises a plurality of telescopic scales sleeved in sequence.
9. The laser focal length positioning measurement device of claim 1, further comprising: positioning an auxiliary member; wherein the content of the first and second substances,
the positioning auxiliary part is provided with at least one second tip part, the positioning auxiliary part is detachably arranged in a laser selection area on the workpiece, and the second tip part of the positioning auxiliary part is contacted with the first tip part of the positioning part.
10. The laser focal length positioning measurement device of any one of claims 1 to 9, further comprising: a connecting seat; wherein the content of the first and second substances,
the laser head measuring device is characterized in that the connecting seat is provided with a clamping groove for being connected with the measuring piece, and a plurality of connecting holes are formed around the clamping groove for being connected with the laser head.
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| CN202022367366.6U CN213364198U (en) | 2020-10-22 | 2020-10-22 | Laser focal length positioning and measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798660A (en) * | 2021-10-08 | 2021-12-17 | 华工法利莱切焊系统工程有限公司 | Laser beam incident angle measuring tool and laser beam incident angle adjusting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798660A (en) * | 2021-10-08 | 2021-12-17 | 华工法利莱切焊系统工程有限公司 | Laser beam incident angle measuring tool and laser beam incident angle adjusting method |
| CN113798660B (en) * | 2021-10-08 | 2024-02-20 | 华工法利莱切焊系统工程有限公司 | Laser beam incidence angle measuring tool and laser beam incidence angle adjusting method |
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