Part inner diameter inspection measuring tool

Abstract

The utility model discloses a part inner diameter inspection measuring tool, which is characterized in that a knob on the left side of a mounting rod is manually rotated to be matched with a bidirectional lead screw and a guide shaft to drive V-shaped clamping plates on the two sides to synchronously approach to clamp pipe fittings with different diameters, and after clamping, a measurement mounting structure is manually adjusted. The inner side clamping shaft can be located in the hole of the pipe fitting and abut against the inner wall of the hole under the action of the spring, at the moment, the positions of the two sliding shafts are fixed, the distance between the two sliding shafts is the inner diameter of the part, the operation mode is simple, the measuring process is stable, and the device can be suitable for measuring parts of various sizes.

Description

Technical Field

[0001] The utility model relates to the field of measurement, in particular to a part inner diameter inspection measuring tool. Background Art

[0002] Parts measurement is a necessary inspection process for various parts after processing to ensure that the part dimensions meet the dimensional requirements of processing and subsequent use. Parts measurement not only includes the measurement of the outer dimensions of the parts, but also the measurement of the inner diameter is particularly important for tubular parts.

[0003] At present, the inner diameter of parts is mostly measured directly with a vernier caliper. However, pipe fittings have poor stability during measurement. If a good measurement effect is to be achieved, a special clamping device is required to clamp them. At the same time, a vernier caliper sometimes cannot meet the measurement of different inner diameters. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses a part inner diameter inspection gauge, and the technical scheme adopted is that it includes a mounting rod, a scale, a mounting groove, a bidirectional lead screw, a guide shaft, a mounting block, a V-shaped card plate, a fixed shaft, a threaded groove, a nut, a mounting block, a track shaft, a measuring mounting structure, a sliding shaft and a pointer. The upper surface of the mounting rod is distributed with scales, and a penetrating mounting groove is opened on the front side. The bidirectional lead screw is rotatably installed in the mounting groove, and the guide shaft is fixedly installed. A knob is rotatably installed on the left side surface of the mounting rod, and the bidirectional lead screw is driven by manually operating the knob. The mounting blocks are respectively installed in cooperation with the bidirectional lead screw and are movably fitted with the guide shaft. The two mounting blocks are symmetrical on the bidirectional lead screw. A V-shaped card plate is fixed on the front side of the mounting block. A fixed shaft is integrally formed on the upper surface of the V-shaped card plate, and its center is in the same plane as the lowest point of the V-shaped card plate. When the V-shaped clamping plate clamps the pipe fitting, its lowest point is in the same plane as the center of the pipe fitting, so the center of the fixed shaft is also in the same plane as the center of the pipe fitting, and the outer wall of the upper half of the fixed shaft has a threaded groove, and one end of the mounting block is installed through the threaded groove and tightened by a nut, and the track shaft is fixed on the inner side of the mounting block, and a measuring mounting structure is set on the track shaft and the sliding shaft is installed through the measuring mounting structure. When the two-way lead screw is driven by the rotation of the knob to rotate with the V-shaped clamping plates on both sides to clamp the pipe fitting, the measuring mounting structure is adjusted to be located in the inner hole of the pipe fitting and press against the inner wall of the inner hole. At this time, the position of the two sliding shafts can be matched with the scale to read the inner diameter value. A pointer is integrally formed on the sliding shaft for more convenient reading, and a handle is integrally formed on the back side of the mounting rod for daily picking up and transfer of the mounting rod.

[0005] As a preferred technical solution of the utility model, a longitudinal hollow groove is opened on the V-shaped clamping plate, and a friction layer is fixed on the inclined surface of the V-shaped clamping plate.

[0006] As a preferred technical solution of the utility model, the measuring installation structure includes a spring, a movable block, an end ring, an inner clamping shaft and a connecting rod. A spring is fixed on the inner side of the installation block, and the spring is integrally sleeved outside the track shaft. The movable block is movably sleeved on the track shaft, and its outer side is fixedly connected to the spring. This spring is a tensioning spring. The front side of the movable block is integrally formed with an end ring, and the inner clamping shaft is placed in the through hole of the end ring. The inner clamping shaft fits tightly with the inner wall of the through hole of the end ring, and the friction between the inner clamping shaft and the inner wall of the through hole prevents the inner clamping shaft from falling naturally. The rear side of the movable block is integrally formed with a connecting rod, and the rear end of the connecting rod The lower surface of the V-shaped clamping plate is fixedly connected to the sliding shaft, the center of the inner clamping shaft, the center of the fixed shaft and the lowest point of the V-shaped clamping plate are all on the same plane. When the V-shaped clamping plate is clamped, the movable block is manually pulled to pull it to the inner hole of the pipe fitting, and then the inner clamping shaft is manually pressed down, inserted into the inner hole, and then released. At this time, the inner clamping shaft is pressed against the side wall of the inner hole of the pipe fitting under the action of the spring. At this time, the inner clamping shafts on both sides are pressed against the side wall of the inner hole, and the position of the movable block is also fixed. At this time, the movable block fixes the position of the sliding shaft under the action of the connecting rod. At this time, the position between the two sliding shafts is the inner diameter size.

[0007] As a preferred technical solution of the utility model, the upper and lower parts of the track shaft are provided with grooves, and the inner wall of the through hole of the movable block is provided with a protrusion, which is placed in the groove. The above structure helps to improve the stability of the movable block during movement.

[0008] As a preferred technical solution of the utility model, a transverse sliding groove is opened on the upper surface of the mounting rod, and the lower end of the sliding shaft is located in the sliding groove.

[0009] The beneficial effects of the utility model are as follows: by manually rotating the knob on the left side of the installation rod, the bidirectional lead screw and the guide shaft drive the V-shaped clamping plates on both sides to approach synchronously to clamp pipes of different diameters; after clamping, the measuring installation structure is manually adjusted so that the inner clamping shaft can be in the hole of the pipe and pressed against the inner wall of the hole under the action of the spring; at this time, the positions of the two sliding shafts are also fixed, and the spacing between the two sliding shafts is the inner diameter of the part; the operation is simple, the measurement process is stable, and it can adapt to the measurement of parts of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is the front view of the utility model;

[0012] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0013] In the figure: mounting rod 1, scale 102, mounting groove 2, bidirectional lead screw 3, guide shaft 301, mounting block 4, V-shaped clamping plate 5, hollow groove 51, friction layer 52, fixed shaft 6, threaded groove 7, nut 8, mounting block 9, track shaft 10, spring 11, movable block 12, end ring 13, inner clamping shaft 14, connecting rod 15, sliding shaft 16, pointer 161, sliding groove 17. DETAILED DESCRIPTION

[0014] Example 1

[0015] like Figures 1 to 3 As shown, the utility model discloses a part inner diameter inspection gauge, which adopts the technical scheme of comprising a mounting rod 1, a scale 102, a mounting groove 2, a bidirectional lead screw 3, a guide shaft 301, a mounting block 4, a V-shaped clamping plate 5, a fixed shaft 6, a threaded groove 7, a nut 8, a mounting block 9, a track shaft 10, a measuring mounting structure, a sliding shaft 16 and a pointer 161. The mounting rod 1 has a scale 102 distributed on the upper surface, a mounting groove 2 penetrating through the front side, a bidirectional lead screw 3 is rotatably installed in the mounting groove 2, a guide shaft 301 is fixedly installed, and the mounting block 4 is respectively installed in cooperation with the bidirectional lead screw 3. The mounting block 4 is mounted on a movable set with the guide shaft 301, and a V-shaped clamping plate 5 is fixed on the front side of the mounting block 4. A fixed shaft 6 is integrally formed on the upper surface of the V-shaped clamping plate 5, and its center is on the same plane as the lowest point of the V-shaped clamping plate 5. The outer wall of the upper half of the fixed shaft 6 has a threaded groove 7, and one end of the mounting block 9 is mounted through the threaded groove 7 and is tightened by a nut 8. A track shaft 10 is fixed on the inner side of the mounting block 9, a measuring mounting structure is provided on the track shaft 10, and a sliding shaft 16 is installed through the measuring mounting structure, a pointer 161 is integrally formed on the sliding shaft 16, and a handle 101 is integrally formed on the rear side of the mounting rod 1.

[0016] As a preferred technical solution of the utility model, a longitudinal hollow groove 51 is opened on the V-shaped clamping plate 5 to reduce the weight of the entire V-shaped clamping plate 5. A friction layer 52 is fixed on the inclined surface of the V-shaped clamping plate 5 to help improve the stability of clamping.

[0017] As a preferred technical solution of the utility model, the measuring installation structure is that a spring 11 is fixed on the inner side of the installation block 9, and the spring 11 is integrally sleeved on the outside of the track shaft 10. The movable block 12 is movably sleeved on the track shaft 10, and its outer side surface is fixedly connected to the spring 11. An end ring 13 is integrally formed on the front side of the movable block 12, and an inner clamping shaft 14 is placed in the through hole of the end ring 13. The inner clamping shaft 14 fits tightly with the inner wall of the through hole of the end ring 13, and the friction between the inner wall of the through hole prevents the inner clamping shaft 14 from falling off naturally. A connecting rod 15 is integrally formed on the rear side of the movable block 12, and the lower surface of the rear end of the connecting rod 15 is fixedly connected to the sliding shaft 16. The center of the inner clamping shaft 14, the center of the fixed shaft 6 and the lowest point of the V-shaped clamping plate 5 are all on the same plane.

[0018] As a preferred technical solution of the utility model, the upper and lower parts of the track shaft 10 are provided with grooves, and the inner wall of the through hole of the movable block 12 is provided with a protruding part, and the protruding part is matched and placed in the groove.

[0019] As a preferred technical solution of the present utility model, a transverse sliding groove 17 is opened on the upper surface of the mounting rod 1 , and the lower end of the sliding shaft 16 is located in the sliding groove 17 .

[0020] The working principle of the utility model is as follows: when in use, the knob on the left side of the installation rod 1 is manually rotated according to different pipe fittings, driving the bidirectional lead screw 3 to rotate, and the two V-shaped clamping plates 5 installed in conjunction with it are close to each other to clamp the pipe fitting. After clamping, the movable block 12 is manually pulled to pull it above the inner hole of the pipe fitting, and then the inner clamping shaft 14 is manually pressed down and inserted into the inner hole, and then relaxed. At this time, the inner clamping shaft is pressed against the side wall of the inner hole of the pipe fitting under the tension of the spring 11. At this time, the inner clamping shafts 14 on both sides are pressed against the side wall of the inner hole, and the position of the movable block 12 is also fixed. At this time, the movable block 12 fixes the position of the sliding shaft 16 under the action of the connecting rod 15. At this time, the position between the two sliding shafts 16 is the inner diameter size.

[0021] Components not described in detail herein are prior art.

[0022] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A part inner diameter inspection gauge, characterized in that: The invention comprises a mounting rod (1), a scale (102), a mounting groove (2), a bidirectional lead screw (3), a guide shaft (301), a mounting block (4), a V-shaped clamping plate (5), a fixed shaft (6), a threaded groove (7), a nut (8), a mounting block (9), a track shaft (10), a measuring mounting structure, a sliding shaft (16) and a pointer (161); the mounting rod (1) has a scale (102) distributed on its upper surface, and a mounting groove (2) penetrating through it is opened on its front side; the bidirectional lead screw (3) is rotatably mounted in the mounting groove (2), and the guide shaft (301) is fixedly mounted; a knob is rotatably mounted on the left side of the mounting rod (1), and the knob drives the bidirectional lead screw (3); the mounting block (4) is divided into The mounting block (4) is mounted in cooperation with the bidirectional lead screw (3) and is movably mounted on the guide shaft (301); a V-shaped clamping plate (5) is fixed on the front side of the mounting block (4); a fixed shaft (6) is integrally formed on the upper surface of the V-shaped clamping plate (5), and the center of the fixed shaft (6) is located on the same plane as the lowest point of the V-shaped clamping plate (5); a thread groove (7) is provided on the outer wall of the upper half of the fixed shaft (6), and one end of the mounting block (9) is mounted in cooperation with the thread groove (7) and is tightened by a nut (8); a track shaft (10) is fixed on the inner side of the mounting block (9), a measuring mounting structure is provided on the track shaft (10), and a sliding shaft (16) is installed through the measuring mounting structure; a pointer (161) is integrally formed on the sliding shaft (16).

2. A part inner diameter inspection tool according to claim 1, characterized in that: A handle (101) is integrally formed on the rear side of the mounting rod (1).

3. A part inner diameter inspection gauge according to claim 1, characterized in that: The V-shaped clamping plate (5) is provided with a longitudinal hollow groove (51); and a friction layer (52) is fixed on the inclined surface of the V-shaped clamping plate (5).

4. A part inner diameter inspection gauge according to claim 1, characterized in that: The measuring installation structure comprises a spring (11), a movable block (12), an end ring (13), an inner clamping shaft (14) and a connecting rod (15); a spring (11) is fixed on the inner side of the installation block (9), and the spring (11) is integrally sleeved outside the track shaft (10); the movable block (12) is movably sleeved on the track shaft (10), and its outer side surface is fixedly connected to the spring (11); the front side of the movable block (12) is integrally formed with an end ring (13); the end ring (13) is integrally sleeved with the track shaft (10 ... An inner clamping shaft (14) is placed in the through hole of the end ring (13), and the inner clamping shaft (14) is tightly fitted with the inner wall of the through hole of the end ring (13). The friction between the inner clamping shaft (14) and the inner wall of the through hole prevents the inner clamping shaft (14) from falling off naturally; a connecting rod (15) is integrally formed on the rear side of the movable block (12), and the lower surface of the rear end of the connecting rod (15) is fixedly connected to the sliding shaft (16); the center of the inner clamping shaft (14), the center of the fixed shaft (6) and the lowest point of the V-shaped clamping plate (5) are all on the same plane.

5. A part inner diameter inspection tool according to claim 4, characterized in that: The upper and lower parts of the track shaft (10) are provided with grooves, and the inner wall of the through hole of the movable block (12) is provided with a protruding part, which is matched and placed in the groove.

6. A part inner diameter inspection gauge according to claim 1, characterized in that: A transverse sliding groove (17) is formed on the upper surface of the mounting rod (1); the lower end of the sliding shaft (16) is located in the sliding groove (17).

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