Tool clamp for flaw detection of die casting

Abstract

The utility model belongs to the technical field of tool clamps for flaw detection, and particularly relates to a tool clamp for flaw detection of die castings, which comprises a circular frame, a first two-way threaded rod which is vertically arranged is rotatably connected in the circular frame, and a worm gear is fixedly sleeved on the first two-way threaded rod. A worm which is transversely arranged is rotationally connected into the circular frame, the worm is meshed with the worm gear, two moving blocks which are correspondingly arranged up and down are arranged on the first two-way threaded rod in a threaded sleeving mode, and two first limiting rods which are vertically arranged are fixedly connected into the circular frame; the two first limiting rods penetrate through the two moving blocks and are in sliding connection with the two moving blocks. According to the utility model, the clamped and fixed cylindrical die casting can be rotated, the flaw detection angle of the cylindrical die casting can be adjusted, the clamped cylindrical die casting does not need to be loosened, adjusted and clamped again, the flaw detection efficiency is improved, and the clamping stability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures for flaw detection, in particular to a tooling fixture for flaw detection of die castings. Background Art

[0002] The purpose of flaw detection of die castings is to detect internal and surface defects to ensure product quality. Common flaw detection methods include visual inspection, which is to visually inspect the surface of the die casting to see if there are obvious defects such as cracks, pores, gate defects, etc., and penetrant testing, which uses a penetrant to penetrate into the surface defects and then uses a developer to show the defect location.

[0003] When using the above flaw detection method to perform flaw detection on cylindrical die-castings, it is necessary to use a fixed fixture to clamp the die-castings for the operation. Due to the shape of the cylindrical die-castings, traditional tooling fixtures need to frequently loosen the die-castings, rotate and adjust the angle of the die-castings, and then re-clamp them when performing flaw detection operations on their cylindrical surfaces. In order to perform comprehensive flaw detection on the cylindrical surfaces of the cylindrical die-castings, it is impossible to rotate the clamped die-castings, which is very time-consuming and labor-intensive, and the detection efficiency is low.

[0004] Therefore, we proposed a fixture for flaw detection of die castings to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a tooling fixture for flaw detection of die castings.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A tool fixture for flaw detection of die-castings includes a circular frame, in which a vertically arranged first bidirectional threaded rod is rotatably connected, a worm gear is fixedly sleeved on the first bidirectional threaded rod, a transversely arranged worm is rotatably connected in the circular frame, the worm and the worm gear are meshed with each other, a threaded sleeve on the first bidirectional threaded rod is provided with two movable blocks correspondingly arranged up and down, two vertically arranged first limit rods are fixedly connected in the circular frame, both of the first limit rods pass through the two movable blocks and are slidably connected thereto, the outer circumference of the circular frame is rotatably connected to the first rotating rod, the first rotating rod is coaxially fixedly connected to the worm, and the end of the first rotating rod away from the circular frame is fixedly connected to a rotating handle.

[0008] Preferably, the outer circumference of the circular frame is fixedly connected to two extension plates correspondingly arranged in the upper and lower directions, and a second two-way threaded rod is rotatably connected between the two extension plates, and a second limiting rod is fixedly connected between the two extension plates. Two fixed plates symmetrically arranged in the upper and lower directions are threadedly sleeved on the second two-way threaded rod, and the second limiting rod passes through the two fixed plates and is slidably connected thereto. A knob is rotatably connected to the end of one of the extension plates away from the other extension plate, and the knob is coaxially fixedly connected to the second two-way threaded rod.

[0009] Preferably, the right end of the circular frame is fixedly connected to a second rotating rod, a support plate is provided on the right side of the circular frame, the second rotating rod is rotatably connected to the support plate, the right end of the support plate is rotatably connected to a third rotating rod, the third rotating rod is coaxially fixedly connected to the second rotating rod, and the right end of the third rotating rod is fixedly connected to a connecting rod.

[0010] Preferably, an arc-shaped fixing groove is provided on each of the ends of the two fixing plates that are close to each other.

[0011] Preferably, a threaded rod is provided on the connecting rod, the threaded rod passes through the connecting rod and is threadedly connected thereto, the right end of the threaded rod is fixedly connected to a rotating column, and the left end of the threaded rod is fixedly connected to a cylindrical block.

[0012] Preferably, the cylindrical block is made of rubber.

[0013] Compared with existing technologies, the advantages of this device are:

[0014] 1. The third rotating rod is rotated by the connecting rod to drive the circular frame to rotate, so that the clamped cylindrical die-casting can be rotated to adjust the angle of its flaw detection. There is no need to loosen the clamped cylindrical die-casting and adjust it before re-clamping.

[0015] 2. After the cylindrical die-casting is clamped and fixed by rotating the rotating handle so that the two clamping plates are close to each other, the first rotating rod is clamped and fixed by the arc-shaped fixing grooves on the two fixing plates to prevent the rotating handle from rotating due to external force, causing the two clamping plates clamping the cylindrical die-casting to loosen, thereby improving the clamping stability.

[0016] In summary, the utility model can rotate the clamped cylindrical die-casting and adjust the angle of its flaw detection without loosening, adjusting and re-clamping the clamped cylindrical die-casting, thereby improving the flaw detection efficiency and having high clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a fixture for flaw detection of die castings proposed in the present invention;

[0018] Figure 2 This is a partial perspective view of a fixture for flaw detection of die castings proposed in the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1 circular frame, 2 first bidirectional threaded rod, 3 worm gear, 4 worm, 5 moving block, 6 first limiting rod, 7 clamping plate, 8 first rotating rod, 9 rotating handle, 10 extension plate, 11 second bidirectional threaded rod, 12 second limiting rod, 13 fixing plate, 14 knob, 15 second rotating rod, 16 supporting plate, 17 third rotating rod, 18 connecting rod, 19 threaded rod, 20 rotating column, 21 cylindrical block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-Figure 3 , a fixture for flaw detection of die castings, including a circular frame 1, a vertically arranged first bidirectional threaded rod 2 is rotatably connected in the circular frame 1, a worm gear 3 is fixedly sleeved on the first bidirectional threaded rod 2, a horizontally arranged worm 4 is rotatably connected in the circular frame 1, the worm 4 and the worm gear 3 are meshed with each other, and two upper and lower corresponding moving blocks 5 are threadedly sleeved on the first bidirectional threaded rod 2, two vertically arranged first limiting rods 6 are fixedly connected in the circular frame 1, the two first limiting rods 6 both pass through the two moving blocks 5 and are slidably connected thereto, the outer circumference of the circular frame 1 is rotatably connected to a first rotating rod 8, the first rotating rod 8 is coaxially fixedly connected to the worm 4, and the end of the first rotating rod 8 away from the circular frame 1 is fixedly connected to a rotating handle 9;

[0023] The two moving blocks 5 are respectively threadedly mounted on the parts of the first bidirectional threaded rod 2 with opposite thread rotation directions. The two clamping plates 7 are arc-shaped and symmetrically arranged up and down. The first rotating rod 8 is rotated by rotating the handle 9. The first rotating rod 8 drives the worm 4 to rotate, and the worm 4 drives the meshing worm wheel 3 to rotate, thereby rotating the first bidirectional threaded rod 2. The two moving blocks 5 approach each other under the limit of the two first limiting rods 6, so that the cylindrical die-casting is clamped and fixed by the two clamping plates 7.

[0024] The outer circumference of the circular frame 1 is fixedly connected to two upper and lower corresponding extension plates 10, and a second two-way threaded rod 11 is rotatably connected between the two extension plates 10. A second limiting rod 12 is fixedly connected between the two extension plates 10. Two upper and lower symmetrically arranged fixing plates 13 are threadedly sleeved on the second two-way threaded rod 11. The second limiting rod 12 passes through the two fixing plates 13 and is slidably connected thereto. One end of one extension plate 10 away from the other extension plate 10 is rotatably connected to a knob 14, and the knob 14 is coaxially fixedly connected to the second two-way threaded rod 11. An arc-shaped fixing groove is provided at the ends of the two fixing plates 13 that are close to each other, and the two fixing plates 13 are respectively threadedly sleeved on the parts of the second two-way threaded rod 11 with opposite thread rotation directions;

[0025] After the two clamping plates 7 are brought closer to each other and the cylindrical die-casting is clamped and fixed by rotating the rotating handle 9, the knob 14 is rotated to drive the second bidirectional threaded rod 11 to rotate, so that the two fixing plates 13 move closer to each other under the limit of the second limit rod 12, and the first rotating rod 8 is clamped and fixed by the arc-shaped fixing grooves on the two fixing plates 13 to prevent the rotating handle 9 from rotating due to external force, causing the two clamping plates 7 clamping the cylindrical die-casting to loosen.

[0026] The right end of the circular frame 1 is fixedly connected to the second rotating rod 15, and a support plate 16 is provided on the right side of the circular frame 1. The second rotating rod 15 is rotatably connected to the support plate 16. The right end of the support plate 16 is rotatably connected to the third rotating rod 17. The third rotating rod 17 is coaxially fixedly connected to the second rotating rod 15. The right end of the third rotating rod 17 is fixedly connected to a connecting rod 18. A threaded rod 19 is provided on the connecting rod 18. The threaded rod 19 passes through the connecting rod 18 and is threadedly connected thereto. The right end of the threaded rod 19 is fixedly connected to a rotating column 20. The left end of the threaded rod 19 is fixedly connected to a cylindrical block 21. The cylindrical block 21 is made of rubber.

[0027] By rotating the third rotating rod 17 through the connecting rod 18, the second rotating rod 15 can be driven to rotate, and the circular frame 1 can be driven to rotate, so that the clamped cylindrical die-casting can be rotated and the angle of its flaw detection can be adjusted. There is no need to loosen and adjust the clamped cylindrical die-casting and then re-clamp it. After the rotation and adjustment is completed, the threaded rod 19 is driven to rotate by rotating the rotating column 20, so that the threaded rod 19 will move in the direction close to the support plate 16 until the cylindrical block 21 abuts the support plate 16. The cylindrical block 21 is made of rubber and has good anti-slip properties. The cylindrical block 21 abuts the support plate 16 to fix the connecting rod 18 and the third rotating rod 17 so that it does not rotate, thereby fixing the clamped cylindrical die-casting at the adjusted angle.

[0028] When using the present invention, after the cylindrical die-casting is clamped and fixed by rotating the rotating handle 9 to bring the two clamping plates 7 closer to each other, the knob 14 is rotated to clamp and fix the first rotating rod 8 through the arc-shaped fixing grooves on the two fixing plates 13 to prevent the rotating handle 9 from rotating due to external force, which causes the two clamping plates 7 clamping the cylindrical die-casting to loosen. The third rotating rod 17 is rotated through the connecting rod 18 to drive the circular frame 1 to rotate, so that the clamped cylindrical die-casting is rotated and the angle of its flaw detection is adjusted. There is no need to loosen, adjust and re-clamp the clamped cylindrical die-casting. After the rotation and adjustment is completed, the threaded rod 19 is driven to rotate by rotating the rotating column 20, and the cylindrical block 21 is pressed against the support plate 16 to fix the connecting rod 18, and the third rotating rod 17 is fixed so that it does not rotate, thereby fixing the clamped cylindrical die-casting at the adjusted angle.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixture for flaw detection of die castings, comprising a circular frame (1), characterized in that: A vertically arranged first bidirectional threaded rod (2) is rotatably connected in the circular frame (1), a worm wheel (3) is fixedly sleeved on the first bidirectional threaded rod (2), a horizontally arranged worm (4) is rotatably connected in the circular frame (1), the worm (4) and the worm wheel (3) are meshed with each other, two upper and lower corresponding moving blocks (5) are threadedly sleeved on the first bidirectional threaded rod (2), two vertically arranged first limiting rods (6) are fixedly connected in the circular frame (1), both of the two first limiting rods (6) pass through the two moving blocks (5) and are slidably connected thereto, a first rotating rod (8) is rotatably connected to the outer circumference of the circular frame (1), the first rotating rod (8) is coaxially fixedly connected to the worm wheel (4), and a rotating handle (9) is fixedly connected to the end of the first rotating rod (8) away from the circular frame (1).

2. A fixture for flaw detection of die castings according to claim 1, characterized in that: The outer circumference of the circular frame (1) is fixedly connected to two upper and lower corresponding extension plates (10), a second bidirectional threaded rod (11) is rotatably connected between the two extension plates (10), a second limiting rod (12) is fixedly connected between the two extension plates (10), two upper and lower symmetrically arranged fixing plates (13) are threadedly sleeved on the second bidirectional threaded rod (11), the second limiting rod (12) passes through the two fixing plates (13) and is slidably connected thereto, one end of one of the extension plates (10) away from the other extension plate (10) is rotatably connected to a knob (14), and the knob (14) is coaxially fixedly connected to the second bidirectional threaded rod (11).

3. A fixture for flaw detection of die castings according to claim 1, characterized in that: The right end of the circular frame (1) is fixedly connected to a second rotating rod (15), a support plate (16) is provided on the right side of the circular frame (1), the second rotating rod (15) is rotatably connected to the support plate (16), the right end of the support plate (16) is rotatably connected to a third rotating rod (17), the third rotating rod (17) is coaxially fixedly connected to the second rotating rod (15), and the right end of the third rotating rod (17) is fixedly connected to a connecting rod (18).

4. A fixture for flaw detection of die castings according to claim 2, characterized in that: An arc-shaped fixing groove is provided on one end of the two fixing plates (13) that are close to each other.

5. The fixture for flaw detection of die castings according to claim 3, characterized in that: The connecting rod (18) is provided with a threaded rod (19), which passes through the connecting rod (18) and is threadedly connected thereto. The right end of the threaded rod (19) is fixedly connected to a rotating column (20), and the left end of the threaded rod (19) is fixedly connected to a cylindrical block (21).

6. A fixture for flaw detection of die castings according to claim 5, characterized in that: The cylindrical block (21) is made of rubber.

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