A laser additive fixture

Abstract

The utility model discloses a kind of laser additive fixtures, it is related to laser additive technical field, the laser additive fixture includes fixture base, workbench and heating plate.Electromagnetic relay is arranged in fixture base, and energization can make fixture assembly adsorb on workbench, mobile groove is equipped in workbench and mobile groove is rotatably arranged in two-way screw rod, mobile slider is arranged at the both ends of two-way screw rod, mobile slider is connected with slider upper plate, slider upper plate is connected with fixture baseplate, fixture is detachable, can be replaced according to clamping target, two-way screw rod can make fixture assembly simultaneously move towards or away from each other, circular pressing rod drives fixture arm front end to move downward, so that fixture arm clamps baseplate, heating plate is above workbench, temperature measuring device is placed in the center and four corners of heating plate, and accurate control of temperature range is realized according to feedback.The utility model can solve the problem of low clamping efficiency and poor adaptability of fixture to different size baseplates in the process of laser additive manufacturing in prior art.

Description

Technical Field

[0001] This utility model relates to the field of laser additive technology, and specifically to a laser additive fixture. Background Technology

[0002] Laser additive manufacturing technology plays an important role in modern manufacturing. It is an advanced manufacturing technology that uses high-energy lasers to melt metal powder or wire layer by layer to build three-dimensional objects.

[0003] Laser additive manufacturing technology includes fixing a substrate, which serves as the "base platform" for the workpiece, directly connecting to the printed part and providing mechanical support and a heat conduction path.

[0004] Currently, in the laser additive manufacturing process, when faced with substrates of different sizes, it is usually necessary to change the fixture to meet the requirements for clamping the substrate. Conventional fixtures have poor adaptability and low clamping efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a laser additive manufacturing fixture, which aims to solve the problems of low clamping efficiency and poor adaptability of the fixture to substrates of different sizes in the laser additive manufacturing process.

[0006] To achieve the above objectives, the embodiments of this utility model are implemented through the following technical solution: A laser additive manufacturing fixture includes: a fixture base, a bidirectional screw, a slider upper plate, a movable slider, and a fixture assembly. A worktable is provided on the top of the fixture base, and a movable groove is formed on the side of the worktable facing away from the fixture base. A positioning bearing is fixedly connected inside the movable groove, and the positioning bearing divides the movable groove into a first groove and a second groove. The bidirectional screw is rotatably connected to the positioning bearing, and the external thread of the bidirectional screw located in the first groove has the opposite direction to the external thread of the portion located in the second groove. The movable slider includes a first slider and a second slider, with the bidirectional screw in the first groove screwed onto the first slider, and the bidirectional screw in the second groove screwed onto the second slider. The slider upper plate includes a first plate and a second plate, with the top of the first slider connected to the first plate, and the top of the second slider connected to the second plate. The fixture assembly includes a first clamp and a second clamp, with the first clamp detachably connected to the first plate and the second clamp detachably connected to the second plate.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: By rotating the bidirectional screw, the moving slider is driven to move, causing the upper plate of the slider to move relative to it. The upper plate of the slider drives the clamping assembly to move to a suitable position. The first clamp and the second clamp are adjusted so that the initial position of the clamping arm is at a suitable height. By adjusting the bidirectional screw and the clamping assembly, the position of the clamping assembly can be controlled to adapt to the size of different substrates, enabling rapid clamping of the substrates. At the same time, the clamping assembly is detachable and can be replaced according to the clamping target, thereby solving the problems of low clamping efficiency and poor adaptability of the clamps to substrates of different sizes in the prior art.

[0008] Furthermore, the first clamp includes a clamp base plate, a circular pressure bar, and clamp arms. The clamp base plate is detachably connected to the first plate. A sliding groove is provided on the side of the clamp base plate facing away from the first plate. The circular pressure bar is rotatably connected in the sliding groove. The circular pressure bar is fixedly connected to the clamp arms. The two clamp arms extend towards each other.

[0009] Furthermore, the clamp arm includes a first arm and a second arm, which are connected to opposite ends of the circular pressure rod. The end of the first arm facing away from the circular pressure rod is connected to the end of the second arm facing away from the circular pressure rod via a positioning pin. The positioning pin is rotatably connected to the first arm and the second arm. The positioning pin is screwed to a screw rod, and the end of the screw rod facing away from the positioning pin is screwed to the clamp base plate.

[0010] Furthermore, a positioning block is provided on the side of the first plate facing away from the first slider, and a connecting groove is provided on the side of the clamp base plate facing the first plate. The position of the connecting groove is adapted to the size of the positioning block and corresponds to its position.

[0011] Furthermore, a heating plate is provided on the worktable, the heating plate has adjustable temperature, and the heating plate is located between the two clamping assemblies.

[0012] Furthermore, temperature detection devices are provided at the four corners and the center of the heating plate, and the temperature detection devices are used to detect the temperature of the substrate.

[0013] Furthermore, the end of the bidirectional screw facing away from the positioning bearing extends out of the worktable.

[0014] Furthermore, the bottom of the fixture base is electrically connected to an electromagnetic relay, and the fixture base, the worktable, the bidirectional screw, the first slider and the second slider, the first plate and the second plate, and the fixture base plate are all metal components.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the laser additive manufacturing fixture in the embodiment of this utility model from a first-view perspective.

[0018] Figure 2 This is a schematic diagram of the laser additive manufacturing fixture in the embodiment of this utility model from a second perspective.

[0019] Figure 3 This is a schematic diagram of the laser additive manufacturing fixture in the embodiment of this utility model from a third-person perspective.

[0020] Figure 4 This is a schematic diagram of the laser additive manufacturing fixture in the embodiment of this utility model from a fourth perspective.

[0021] Figure 5 This is a schematic diagram of the fixture assembly in the laser additive manufacturing fixture in this embodiment of the present invention from a first-view perspective.

[0022] Figure 6 This is a cross-sectional view of the laser additive manufacturing fixture in an embodiment of this utility model.

[0023] Figure 7 This is a schematic diagram of the bidirectional screw in the laser additive manufacturing fixture in this embodiment of the present invention.

[0024] Explanation of key component symbols in the diagram:

[0025] 10. Fixture base; 20. Worktable; 21. Bidirectional screw; 22. First plate; 23. Second plate; 24. First slider; 25. Second slider; 26. Positioning bearing; 27. Positioning block; 30. Fixture base plate; 31. Circular pressure bar; 32. Fixture arm; 33. Positioning pin; 34. Screw; 35. Bolt hole; 36. First fixture; 37. Second fixture; 40. Heating plate; 51. First groove; 52. Second groove. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0028] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0029] Please see Figures 1 to 7This utility model provides a laser additive manufacturing fixture, including a fixture base 10. A worktable 20 is disposed on the top of the fixture base 10, and an electromagnetic relay is electrically connected to the bottom of the fixture base 10. When energized, the worktable 20 becomes magnetic, allowing the fixture assembly to be adsorbed onto the worktable 20, ensuring the stability of the fixture assembly in clamping the substrate. A movable groove is formed on the side of the worktable 20 facing away from the fixture base 10. A positioning bearing 26 is fixedly disposed in the movable groove, dividing the movable groove into a first groove 51 and a second groove 52. A bidirectional screw 21 rotates. The positioning bearing 26 is connected, and the external thread of the bidirectional screw 21 located in the first groove 51 is opposite in direction to the external thread located in the second groove 52; the movable slider includes a first slider 24 and a second slider 25, the bidirectional screw 21 of the first groove 51 is screwed to the first slider 24, and the bidirectional screw 21 of the second groove 52 is screwed to the second slider 25; the upper plate of the slider includes a first plate 22 and a second plate 23, the top of the first slider 24 is connected to the first plate 22, and the top of the second slider 25 is connected to the second plate 23. When the bidirectional screw 21 is rotated, since the bidirectional screw 21 does not move relative to the worktable 20, and the first slider 24 is fixedly connected to the first plate 22, and the second slider 25 is fixedly connected to the second plate 23, the sliders will move relative to the bidirectional screw 21 when the bidirectional screw 21 rotates. That is, the bidirectional screw 21 can make the moving sliders move towards or away from each other simultaneously. A positioning block 27 is provided on the side of the first plate 22 facing away from the first slider 24. The positioning block 27 is used to connect the first clamp 36. The connection method between the second plate 23 and the second clamp 37 is the same as that between the first plate 22 and the second clamp 37. The clamp assembly is detachably connected to the upper plate of the slider.

[0030] The clamping assembly includes a first clamp 36 and a second clamp 37. The first clamp 36 includes a clamping base plate 30, a circular pressure rod 31, and a clamping arm 32. The clamping base plate 30 is detachably connected to the first plate 22. The clamping base plate 30 has a connecting groove on the side facing the first plate 22. The position of the connecting groove is adapted to the size and position of the positioning block 27. The clamping base plate 30 has a sliding groove on the side facing away from the first plate 22. The circular pressure rod 31 is rotatably connected in the sliding groove. The sliding groove is used to limit the movement trajectory of the circular pressure rod 31. The circular pressure rod 31 is fixedly connected to the clamping arm 32. The two clamping arms 32 extend towards each other. The clamping arms 32 are driven by the circular pressure rod 31 to move their front ends downward, so that the clamping arms 32 clamp the plate. The clamping arm 32 includes a first arm and a second arm, which connect to opposite ends of the circular pressure rod 31. The end of the first arm facing away from the circular pressure rod 31 is connected to the end of the second arm facing away from the circular pressure rod 31 via a positioning pin 33. The positioning pin 33 is screwed onto a screw rod 34, and the end of the screw rod 34 facing away from the positioning pin 33 is screwed onto the clamping base plate 30. The clamping base plate 30 has several bolt holes 35, which are used to adjust the position of the screw rod 34 on the clamping base plate 30 when the position of the positioning pin 33 on the screw rod 34 changes. By adjusting the position of the positioning pin 33 on the screw rod 34, the initial height of the clamping arm 32 is controlled to adapt to the thickness of the base plate. The second clamp 37 has the same structure as the first clamp 36, and the two are symmetrically arranged.

[0031] A heating plate 40 is provided on the worktable 20. The heating plate 40 has an adjustable temperature and is located between the two clamping assemblies. Temperature detection devices are provided at the four corners and the center of the heating plate 40. The operator can use the temperature detection devices to achieve precise control of the substrate temperature range.

[0032] The bidirectional screw 21 extends from the end opposite to the positioning bearing 24 onto the worktable 20, allowing the operator to adjust the bidirectional screw 21. The fixture base 10, the worktable 20, the bidirectional screw 21, the movable slider, the upper plate of the slider, and the fixture base plate 30 are all metal components. When the electromagnetic relay is working, it ensures that the fixture assembly is adsorbed onto the worktable 20, ensuring that the fixture assembly firmly clamps the base plate.

[0033] In use, turn on the electromagnetic relay to allow the clamp assembly to adhere to the worktable 20. Place the substrate on the heating plate 40, rotate the bidirectional screw 21 to move the sliding slider, causing the upper plate of the slider to move relative to it. The upper plate of the slider moves the clamp assembly to a suitable position. Adjust the position of the positioning pin 33 on the screw 34 to make the initial position of the clamp arm 32 reach a suitable height to match the substrate thickness. Rotate the circular pressure rod 31 to make the front end of the clamp arm 32 rotate around the positioning pin 33, so that the clamp arm 32 presses down to achieve the purpose of clamping. When it is necessary to replace the clamp, turn off the switch of the electromagnetic relay, remove the clamp assembly from the sliding upper plate, select a suitable clamp assembly according to the substrate size, and align the connecting groove of the clamp base 30 with the position of the positioning block 27 of the sliding upper plate. By adjusting the bidirectional screw 21 and the positioning pin 33, the clamping assembly meets the dimensional requirements for substrate clamping, simplifying operation and enabling rapid clamping and fixing of laser additive manufacturing substrates. This adaptable to substrates of varying widths solves the problems of low clamping efficiency and poor adaptability of clamps to substrates of different sizes in existing laser additive manufacturing processes. Furthermore, by incorporating a temperature detection device, the substrate temperature can be further controlled, reducing the temperature gradient and thermal stress in the finished additive product.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A laser additive fixture, characterized in that, include: A fixture base is provided with a worktable on the top of the fixture base. A movable groove is provided on the side of the worktable facing away from the fixture base. A positioning bearing is fixedly connected inside the movable groove, and the positioning bearing divides the movable groove into a first groove and a second groove. A bidirectional screw, wherein the bidirectional screw is rotatably connected to the positioning bearing, and the external thread of the portion of the bidirectional screw located in the first groove has the opposite direction to the external thread of the portion located in the second groove; A movable slider, comprising a first slider and a second slider, wherein the first slider is screwed to the bidirectional screw in the first groove, and the second slider is screwed to the bidirectional screw in the second groove; The upper plate of the slider includes a first plate and a second plate, the top of the first slider is connected to the first plate, and the top of the second slider is connected to the second plate; A clamping assembly, comprising a first clamp and a second clamp, wherein the first clamp is detachably connected to the first plate and the second clamp is detachably connected to the second plate; By rotating the bidirectional screw, the first slider and the second slider are driven to move, thereby enabling the first clamp and the second clamp to move towards or away from each other.

2. The laser additive fixture of claim 1, wherein, The first clamp includes a clamp base plate, a circular pressure bar, and clamp arms. The clamp base plate is detachably connected to the first plate. A sliding groove is provided on the side of the clamp base plate facing away from the first plate. The circular pressure bar is rotatably connected in the sliding groove. The circular pressure bar is fixedly connected to the clamp arms. The two clamp arms extend towards each other.

3. The laser additive fixture of claim 2, wherein, The clamp arm includes a first arm and a second arm, which are connected to opposite ends of the circular pressure rod. The end of the first arm facing away from the circular pressure rod is connected to the end of the second arm facing away from the circular pressure rod via a positioning pin. The positioning pin is rotatably connected to the first arm and the second arm. The positioning pin is screwed to a screw rod, and the end of the screw rod facing away from the positioning pin is screwed to the clamp base plate.

4. The laser additive fixture of claim 3, wherein, A positioning block is provided on the side of the first plate that faces away from the first slider, and a connecting groove is provided on the side of the clamp base plate that faces the first plate, with the position of the connecting groove corresponding to the position of the positioning block.

5. The laser additive fixture of claim 1, wherein, A heating plate is provided on the worktable for adjusting the temperature, and the heating plate is located between the two clamping assemblies.

6. The laser additive fixture of claim 5, wherein, Temperature detection devices are provided at the four corners and the center of the heating plate, and the temperature detection devices are used to detect the temperature of the substrate.

7. The laser additive fixture of claim 1, wherein, The bidirectional screw extends from the end opposite to the positioning bearing onto the worktable.

8. The laser additive fixture of claim 4, wherein, The bottom of the fixture base is electrically connected to an electromagnetic relay. The fixture base, the worktable, the bidirectional screw, the first slider and the second slider, the first plate and the second plate, and the fixture base plate are all metal components.

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