A castings defect detection positioning tool

Abstract

The utility model relates to positioning tool technical field, concretely is a kind of casting defect detection positioning tool.The utility model, including base, the upper surface of base is equipped with positioning clamping device, the positioning clamping device includes pivot, the lower surface of pivot is rotatably connected with base, the upper surface of pivot is fixedly connected with rotating platform.The upper surface of rotating platform is fixedly connected with two fixed plates, the inside screw thread connection of fixed plate has screw rod, the end of two screw rods close is rotatably connected with extruding plate, the inside of rotating platform is equipped with several positioning holes, the inside screw thread connection of two positioning holes has stud, the arc surface of stud is slidably connected with pressure seat.It solves the problem that the orientation of the casting cannot be adjusted after positioning and clamping, which leads to frequent adjustment of the casting position, waste a lot of detection time, and thus reduce the use of traditional casting positioning tool clamp.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a positioning tooling for detecting defects in castings. Background Technology

[0002] Positioning fixtures are process equipment used in industrial manufacturing to define the position of workpieces, and are a subcategory of "tooling and fixtures". Their core function is to use physical constraints to ensure that the workpiece occupies a unique and definite position during processing, assembly, or inspection, thereby ensuring the accuracy requirements of each process.

[0003] Existing technologies, such as the utility model with publication number CN219901237U, disclose a positioning fixture for machining aluminum alloy castings. The fixture includes a support rod, with a mounting plate welded to its top. The mounting plate has multiple sets of vertically connected sliding grooves, and sliders are mounted on the inner walls of the grooves via springs. A movable rod is rotatably connected to the bottom of the slider, and a push rod is welded to the bottom of the movable rod away from the slider. A push plate is rotatably mounted on the surface of the support rod below the movable rod, and the push plate has an arc-shaped connecting groove inside to facilitate the sliding of the push rod. A screw is welded to the top of the slider, and a liftable clamping assembly is threaded onto the surface of the screw. A positioning assembly is welded to the top of the screw. This utility model solves the problems of inconvenience in quickly clamping and positioning aluminum alloy castings and its unsuitability for positioning irregular metal castings.

[0004] The above-mentioned issues have the following drawbacks: the casting orientation cannot be adjusted after the casting is clamped, which leads to frequent adjustments of the casting position, wasting a lot of inspection time and thus reducing the efficiency of traditional casting positioning fixtures. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the casting orientation cannot be adjusted after clamping, leading to frequent adjustments of the casting position, wasting a lot of inspection time, and thus reducing the efficiency of traditional casting positioning fixtures. Therefore, this invention proposes a casting defect detection positioning fixture.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a casting defect detection and positioning fixture, comprising a base, a positioning clamping device provided on the upper surface of the base, the positioning clamping device including a rotating shaft, the lower surface of the rotating shaft being rotatably connected to the base, and a rotating platform fixedly connected to the upper surface of the rotating shaft. Two fixing plates are fixedly connected to the upper surface of the rotating platform, and screws are threadedly connected to the interior of the fixing plates. A pressing plate is rotatably connected to one end of the two screws that are close to each other. Several positioning holes are opened inside the rotating platform, and studs are threadedly connected to the interior of two of the positioning holes. A pressure seat is slidably connected to the arc surface of the stud.

[0007] The stud is threaded with a nut on the arc surface above the pressure seat. The effect achieved by the above components is to compress and fix the casting.

[0008] Preferably, a telescopic rod is fixedly connected to one end of the two fixed plates that are close to each other, and the output end of the telescopic rod is fixedly connected to the extrusion plate.

[0009] The effect achieved by the above components is to use the telescopic rod to assist the screw in fixing the extrusion plate.

[0010] Preferably, a rubber pad is fixedly connected to the end of the extrusion plate away from the screw, and the surface of the rubber pad is distributed with irregular small particles.

[0011] The aforementioned components achieve the following effects: securing the casting with rubber pads and reducing pressure damage to the casting.

[0012] Preferably, a rotating handle is fixedly connected to the arc surface of the rotating platform, and the rotating handle is located below the screw.

[0013] The effect achieved by the above components is that the rotating platform can be easily rotated when the casting is clamped by using the rotating handle.

[0014] Preferably, the lower surface of the base is provided with a lifting device, the lifting device including a top plate, the upper surface of the top plate being fixedly connected to the base, a bottom plate being provided below the corresponding position of the top plate, two rotating seats being fixedly connected at corresponding positions of the lower surface of the top plate and the upper surface of the bottom plate, a sliding groove being formed at corresponding positions of the lower surface of the top plate and the upper surface of the bottom plate, a sliding rod being slidably connected inside the sliding groove, a support rod being fixedly connected inside the sliding rod and the rotating seats, and cross rods being rotatably connected at both ends of the support rod, a lead screw being threaded inside the sliding rod slidably connected inside the top plate, and a limit plate being rotatably connected to the arc surfaces at both ends of the lead screw, the upper surface of the limit plate being fixedly connected to the top plate.

[0015] The effect achieved by the above components is that the base can be raised or lowered to the required height.

[0016] Preferably, one end of the lead screw is fixedly connected to a disc handle, and the edge of the disc handle is provided with annular anti-slip ridges.

[0017] The effect achieved by the above components is to facilitate the rotation of the lead screw using the disc handle.

[0018] Preferably, the lower surface of the base plate is threaded with four threaded table legs, which are evenly distributed around the base plate.

[0019] The effect achieved by the above components is that the threaded table legs allow the base plate to be placed stably on uneven floors.

[0020] In summary, the beneficial effects of this utility model are as follows: In this invention, when a positioning clamping device is needed to inspect a casting, the casting to be inspected is placed on a rotating platform. The screw is rotated to move it towards the center, which in turn causes the extrusion plate to press the casting towards the center. At this time, the rubber pad on the extrusion plate protects the surface of the casting and increases friction. The movement of the extrusion plate causes the telescopic rod to stretch, which in turn helps the screw fix the casting. A stud is screwed into the required positioning hole, and a pressure seat is placed on the arc surface of the stud. A nut is screwed on to press the casting down. The rotating handle is rotated to adjust the rotating platform to a suitable position, and the casting inspection begins. After the inspection is completed, the screw is rotated to both sides to release the casting being pressed down. Then, the nut on the pressure seat pressing down on the casting is released, and finally, the inspected casting is removed.

[0021] In this invention, when the casting being inspected is low and a lifting device is required, the threaded table legs are adjusted so that the base plate sits stably on the floor. The disc handle is rotated, which drives the lead screw to rotate. The lead screw rotates and pushes the sliding rod to move along the sliding groove to the other side. The movement of the sliding rod causes the cross rod to press, which in turn raises the top plate. The rise of the top plate raises the base. Once the desired position is reached, the disc handle is stopped. After the casting inspection is completed, the disc handle is rotated to adjust the height of the base to a suitable position for removing the casting. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Left side 3D structure diagram; Figure 3 This is a schematic diagram of the structure of the positioning and clamping device of this utility model; Figure 4 This is a schematic diagram of the lifting device structure of this utility model; Legend: 1. Base; 2. Positioning and clamping device; 201. Rotating shaft; 202. Rotating platform; 203. Fixing plate; 204. Screw; 205. Extrusion plate; 206. Rubber pad; 207. Telescopic rod; 208. Positioning hole; 209. Stud; 210. Pressure seat; 211. Nut; 212. Rotating handle; 3. Lifting device; 301. Top plate; 302. Sliding groove; 303. Rotating seat; 304. Sliding rod; 305. Limiting plate; 306. Lead screw; 307. Disc handle; 308. Cross rod; 309. Support rod; 310. Base plate; 311. Threaded table leg. Detailed Implementation

[0023] Reference Figure 1As shown, this utility model provides a technical solution: a casting defect detection and positioning fixture, including a base 1, a positioning clamping device 2 on the upper surface of the base 1, and a lifting device 3 on the lower surface of the base 1.

[0024] The specific setup and function of its positioning clamping device 2 and lifting device 3 will be described in detail below.

[0025] Reference Figure 3 As shown in this embodiment: the positioning and clamping device 2 includes a rotating shaft 201, the lower surface of which is rotatably connected to the base 1, and a rotating platform 202 is fixedly connected to the upper surface of the rotating shaft 201. Two fixing plates 203 are fixedly connected to the upper surface of the rotating platform 202. Screws 204 are threadedly connected to the interior of the fixing plates 203. A pressing plate 205 is rotatably connected to one end of the two screws 204 that is close to each other. Several positioning holes 208 are opened inside the rotating platform 202, and studs 209 are threadedly connected to the interior of two of the positioning holes 208. A pressure seat 210 is slidably connected to the arc surface of the stud 209, and a nut 211 is threadedly connected to the arc surface of the stud 209 above the pressure seat 210. The effect achieved by the above components is to achieve the function of pressing and fixing the casting. A telescopic rod 207 is fixedly connected to one end of the two fixed plates 203 that are close to each other. The output end of the telescopic rod 207 is fixedly connected to the extrusion plate 205. The effect of the above components is to use the telescopic rod 207 to assist the screw 204 in fixing the extrusion plate 205. A rubber pad 206 is fixedly connected to the end of the extrusion plate 205 away from the screw 204. The surface of the rubber pad 206 is distributed with irregular small particles. The effect of the above components is to use the rubber pad 206 to fix the casting and reduce casting damage. A rotating handle 212 is fixedly connected to the arc surface of the rotating platform 202. The rotating handle 212 is located below the screw 204. The effect of the above components is to facilitate the rotation of the rotating platform 202 when the casting is clamped by using the rotating handle 212.

[0026] Reference Figure 2 and Figure 4As shown in this embodiment: a lifting device 3 is provided on the lower surface of the base 1. The lifting device 3 includes a top plate 301, the upper surface of the top plate 301 is fixedly connected to the base 1, and a bottom plate 310 is provided below the corresponding position of the top plate 301. Two rotating seats 303 are fixedly connected at corresponding positions of the lower surface of the top plate 301 and the upper surface of the bottom plate 310. A sliding groove 302 is opened at the corresponding position of the lower surface of the top plate 301 and the upper surface of the bottom plate 310. A sliding rod 304 is slidably connected inside the sliding groove 302. A support rod 309 is fixedly connected inside the sliding rod 304 and the rotating seat 303. Cross rods 308 are rotatably connected to both ends of the support rod 309. A lead screw 306 is threaded inside the sliding rod 304 slidably connected inside the top plate 301. A limit plate 305 is rotatably connected to the arc surfaces at both ends of the lead screw 306. The upper surface of the limit plate 305 is fixedly connected to the top plate 301. The effect achieved by the above components is that the base 1 can be raised and lowered to the required height. One end of the lead screw 306 is fixedly connected to a disc handle 307. The edge of the disc handle 307 is provided with annular anti-slip ridges. The effect of the above components is to facilitate the rotation of the lead screw 306 using the disc handle 307. The lower surface of the base plate 310 is threadedly connected to four threaded table legs 311. The threaded table legs 311 are evenly distributed around the base plate 310. The effect of the above components is to facilitate the stable placement of the base plate 310 on uneven floors using the threaded table legs 311.

[0027] Working principle: When the positioning clamping device 2 is needed to inspect the casting, the casting to be inspected is placed on the rotating platform 202. The screw 204 is rotated to move the screw 204 towards the center. The movement of the screw 204 towards the center causes the extrusion plate 205 to press towards the center. At this time, the rubber pad 206 on the extrusion plate 205 has the function of protecting the surface of the casting and increasing the friction. The movement of the extrusion plate 205 causes the telescopic rod 207 to stretch, which assists the screw 204 in fixing the casting. The stud 209 is screwed into the required positioning hole 208. The pressure seat 210 is placed on the arc surface of the stud 209 and the nut 211 is screwed on to press the casting with the pressure seat 210. The rotating handle 212 is rotated to adjust the rotating platform 202 to a suitable position and the casting inspection begins. After the inspection is completed, the screw 204 is rotated to both sides to release the casting that is being pressed, and then the nut 211 on the pressure seat 210 that is pressing the casting is released. Finally, the inspected casting is taken out.

[0028] In this invention, when the casting being inspected is low and requires the use of the lifting device 3, the threaded table legs 311 are adjusted so that the base plate 310 sits stably on the floor. The disc handle 307 is rotated, which drives the lead screw 306 to rotate. The lead screw 306 rotates and pushes the sliding rod 304 to move along the sliding groove 302 to the other side. The movement of the sliding rod 304 causes the cross rod 308 to press, which causes the top plate 301 to rise. The rise of the top plate 301 causes the base 1 to rise. After reaching the required position, the disc handle 307 is stopped. After the casting inspection is completed, the disc handle 307 is rotated to adjust the height of the base 1 to a suitable position for removing the casting.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

Claims

1. A casting defect detection and positioning fixture, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a positioning clamping device (2). The positioning clamping device (2) includes a rotating shaft (201). The lower surface of the rotating shaft (201) is rotatably connected to the base (1). The upper surface of the rotating shaft (201) is fixedly connected to a rotating platform (202). The upper surface of the rotating platform (202) is fixedly connected to two fixing plates (203). The fixing plates (203) are internally threaded with screws (204). The two screws (204) are rotatably connected to a pressing plate (205) at their close ends. The rotating platform (202) has several positioning holes (208) inside. Two of the positioning holes (208) are internally threaded with studs (209). The arc surface of the studs (209) is slidably connected to a pressure seat (210). The arc surface of the studs (209) above the pressure seat (210) is threaded with a nut (211).

2. The casting defect detection and positioning fixture according to claim 1, characterized in that: A telescopic rod (207) is fixedly connected to one end of the two fixed plates (203) that are close to each other, and the output end of the telescopic rod (207) is fixedly connected to the extrusion plate (205).

3. The casting defect detection and positioning fixture according to claim 1, characterized in that: A rubber pad (206) is fixedly connected to one end of the extrusion plate (205) away from the screw (204), and the surface of the rubber pad (206) is covered with irregular small particles.

4. The casting defect detection and positioning fixture according to claim 1, characterized in that: The rotating platform (202) has a rotating handle (212) fixedly connected to its arc surface, and the rotating handle (212) is below the screw (204).

5. The casting defect detection and positioning fixture according to claim 1, characterized in that: The lower surface of the base (1) is provided with a lifting device (3), the lifting device (3) includes a top plate (301), the upper surface of the top plate (301) is fixedly connected to the base (1), a bottom plate (310) is provided below the corresponding position of the top plate (301), two rotating seats (303) are fixedly connected at the corresponding positions of the lower surface of the top plate (301) and the upper surface of the bottom plate (310), and a sliding groove (302) is opened at the corresponding position of the lower surface of the top plate (301) and the upper surface of the bottom plate (310). A sliding rod (304) is slidably connected inside the sliding groove (302). A support rod (309) is fixedly connected inside the sliding rod (304) and the rotating seat (303). Cross rods (308) are rotatably connected to both ends of the support rod (309). A screw rod (306) is threaded inside the sliding rod (304) slidably connected inside the top plate (301). A limit plate (305) is rotatably connected to the arc surfaces at both ends of the screw rod (306). The upper surface of the limit plate (305) is fixedly connected to the top plate (301).

6. The casting defect detection and positioning fixture according to claim 5, characterized in that: One end of the lead screw (306) is fixedly connected to a disc handle (307), and the edge of the disc handle (307) is provided with annular anti-slip ridges.

7. The casting defect detection and positioning fixture according to claim 5, characterized in that: The lower surface of the base plate (310) is threaded with four threaded table legs (311), which are evenly distributed around the base plate (310).

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