Tool for measuring inner diameter of deep hole

Abstract

The utility model discloses a tool for measuring the inner diameter of a deep hole, which comprises a leveling ruler, a measuring rod, a fixed measuring head, a sliding measuring head, a fixed seat, a dial indicator and a locking structure, a pull rod is arranged in the middle of the leveling ruler, the pull rod is longitudinally arranged and can be operably and longitudinally adjusted, the measuring rod and the pull rod are vertically distributed, and the fixed measuring head and the sliding measuring head are arranged on the fixed seat. The middle of the measuring rod is detachably connected with the bottom of the pull rod, the fixed measuring head is detachably connected to one end of the measuring rod and can be telescopically adjusted in the transverse direction, and the sliding measuring head is elastically installed at the other end of the measuring rod and can slide in the transverse direction. According to the utility model, the longitudinal height of the pull rod can be adjusted to enable the measuring rod to extend into different hole depths, so that the measurement is convenient and fast, the structure is simple, and the applicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to a tool for measuring the inner diameter of a deep hole. Background Art

[0002] At present, in the machining process, when the hole depth is deep and the hole diameter is large, it is impossible to measure it on a vertical lathe using a general measuring tool. Therefore, there is an urgent need for a measuring tool that can quickly and correctly measure the inner diameter of a deep hole on a vertical lathe. Summary of the invention

[0003] In view of the above problems existing in the existing measuring tools, the present invention aims to provide a tool for measuring the inner diameter of a deep hole which has high applicability and is convenient and quick to measure.

[0004] The specific technical solutions are as follows:

[0005] A tool for measuring the inner diameter of a deep hole, comprising:

[0006] A ruler, wherein a pull rod is provided in the middle of the ruler, the pull rod is arranged longitudinally and can be adjusted longitudinally;

[0007] A measuring rod, wherein the measuring rod and the pull rod are vertically distributed, and the middle portion of the measuring rod is detachably connected to the bottom portion of the pull rod;

[0008] A fixed measuring head, which is detachably connected to one end of the measuring rod and can be telescopically adjusted in the lateral direction;

[0009] A sliding probe, which is elastically mounted on the other end of the measuring rod and can slide laterally;

[0010] A fixing seat, the fixing seat being detachably mounted on the rod wall at the other end of the measuring rod;

[0011] A dial gauge, the dial gauge is mounted on the fixed seat in a lateral sliding manner, the sliding probe is provided with a lever, and the measuring rod of the dial gauge is in contact with the lever;

[0012] A locking structure is provided between the dial indicator and the fixing seat, and is used for locking the dial indicator to the fixing seat.

[0013] As a further improvement and optimization of this solution, the other end of the measuring rod has a sliding cavity, one end of the sliding probe is slidably disposed in the sliding cavity, and the other end extends to the outside through the side wall of the sliding cavity. A spring is provided in the sliding cavity, and the spring is located between the sliding probe and the side wall of the sliding cavity.

[0014] As a further improvement and optimization of the present solution, a side wall of the measuring rod is provided with an elongated hole connected to the sliding cavity, and the shift rod extends to the outside through the elongated hole and contacts with the measuring rod of the dial indicator in a limiting manner.

[0015] As a further improvement and optimization of this solution, the fixing seat is provided with a sliding hole, and the measuring rod sleeve of the dial indicator is slidably installed in the sliding hole;

[0016] The locking structure comprises a locking hole provided on the side of the fixing seat and vertically connected with the sliding hole, and a locking bolt threadedly installed at the locking hole. The locking bolt is tightened to counteract and lock the measuring rod sleeve of the dial indicator.

[0017] As a further improvement and optimization of this solution, one end of the measuring rod has a mounting groove, a fixing sleeve is provided in the mounting groove, and the fixed measuring head is slidably arranged in the fixing sleeve;

[0018] A fixing hole is provided on the side wall of one end of the measuring rod, and an avoidance hole connected to the fixing hole is provided on the fixing sleeve. A fixing bolt is threadedly installed at the fixing hole, and the fixing bolt is tightened to fix the fixed probe in the fixing sleeve.

[0019] As a further improvement and optimization of this solution, a limit groove is provided on the side wall of the fixed probe, the length direction of the limit groove is consistent with the length direction of the measuring rod, and the bottom of the limit groove is pressed by the fixing bolt to fix the fixed probe.

[0020] As a further improvement and optimization of this solution, an adjustment structure is provided between the level ruler and the pull rod to adjust the height of the pull rod;

[0021] The regulatory structure comprises:

[0022] An adjusting cylinder is installed in the middle of the flat ruler, the bottom of the pull rod slides through the adjusting cylinder in sequence, and the measuring rod extends to the bottom of the flat ruler, and an adjusting bolt is provided between the adjusting cylinder and the pull rod for fixing the pull rod.

[0023] As a further improvement and optimization of the present solution, the side wall of the adjusting cylinder is provided with an adjusting hole connected to the adjusting cylinder, the adjusting bolt is threadedly installed in the adjusting hole, and the adjusting bolt is tightened to abut and fix the pull rod.

[0024] As a further improvement and optimization of this solution, the pull rod and the measuring rod are fixed by bolts.

[0025] As a further improvement and optimization of this solution, both ends of the ruler are provided with flat pads.

[0026] Compared with the prior art, the above technical solution has the following positive effects:

[0027] (1) In the utility model, by setting a pull rod, the longitudinal height of the pull rod can be adjusted, and the measuring rod can be extended into different hole depths, so that the measurement is convenient and fast, the structure is simple, and the applicability is high.

[0028] (2) The ruler, measuring rod, fixed probe, sliding probe, fixed seat and dial indicator in the utility model are all detachable and installable. When the measuring tool is not in use, the various parts of the measuring tool can be disassembled to reduce storage space.

[0029] (3) The fixed probe in the present invention can be adjusted for transverse extension and contraction by means of a fixing bolt to meet the measurement requirements for different apertures, thereby further improving the applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of a tool for measuring the inner diameter of a deep hole according to the utility model;

[0031] Figure 2 This is an enlarged schematic diagram of point B of a tool for measuring the inner diameter of a deep hole according to the utility model;

[0032] Figure 3 This is an enlarged schematic diagram of point A of a tool for measuring the inner diameter of a deep hole according to the utility model;

[0033] Figure 4 This is an enlarged schematic diagram of point C of a tool for measuring the inner diameter of a deep hole according to the utility model;

[0034] Figure 5 This is a schematic diagram of a percentage correction using an internal ring gauge for a tool for measuring the inner diameter of a deep hole of the utility model;

[0035] In the attached figure: 1. deep hole to be measured; 2. pull rod; 3. measuring rod; 4. sliding probe; 5. dial indicator; 6. fixed seat; 7. locking bolt; 8. spring; 9. fixed probe; 11. flat washer; 10. fixed sleeve; 20. fixing bolt; 30. adjustment structure; 40. flat ruler; 31. sliding cavity; 32. long hole; 91. limit groove; 101. avoidance hole; 301. adjusting cylinder; 302. adjusting bolt; 303. spring clamp. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Figure 1 This is a schematic diagram of the structure of a tool for measuring the inner diameter of a deep hole according to the utility model. Figure 2 This is an enlarged schematic diagram of point B of a tool for measuring the inner diameter of a deep hole according to the utility model. Figure 3 This is an enlarged schematic diagram of point A of a tool for measuring the inner diameter of a deep hole according to the utility model. Figure 4 This is an enlarged schematic diagram of the C position of a tool for measuring the inner diameter of a deep hole according to the utility model. Figure 5 This is a schematic diagram of a tool for measuring the inner diameter of a deep hole using an inner ring gauge to calibrate the percentage. Figure 1-5As shown, a tool for measuring the inner diameter of a deep hole in a preferred embodiment is shown, including a straightedge 40, a measuring rod 3, a fixed probe 9, a sliding probe 4, a fixing seat 6, a dial indicator 5 and a locking structure. A pull rod 2 is provided in the middle of the straightedge 40, and the pull rod 2 is longitudinally arranged and can be adjusted longitudinally. The measuring rod 3 is vertically distributed with the pull rod 2, and the middle part of the measuring rod 3 is detachably connected to the bottom of the pull rod 2. The fixed probe 9 is detachably connected to one end of the measuring rod 3 and can be telescopically adjusted in the transverse direction. The sliding probe 4 is elastically mounted on the other end of the measuring rod 3 and can slide transversely. The fixing seat 6 is detachably mounted on the rod wall at the other end of the measuring rod 3. The dial indicator 5 can be slidably mounted on the fixing seat 6 in a transverse direction. The sliding probe 4 is provided with a gear lever, and the measuring rod of the dial indicator 5 is in contact with the gear lever. The locking structure is arranged between the dial indicator 5 and the fixing seat 6, and is used to lock the dial indicator 5 to the fixing seat 6.

[0040] During measurement, by placing the two ends of the ruler 40 including the flat pad on the product, the depth of the measuring hole can be adjusted by retracting the pull rod, and the measuring tool is placed in the depth hole 1 to be measured, and the fixed probe 9 and the sliding probe 4 are in contact with the inner wall of the depth hole 1 to be measured. Since the sliding probe 4 is elastically installed and is limitedly contacted with the measuring rod of the dial indicator 5 through the gear lever, one end of the fixed probe 9 is close to the inner wall, and the measuring rod is rotated clockwise and counterclockwise around the axis of the inner hole of the product to take the maximum reading. At this time, the ruler 40 and the pull rod 2 can rotate synchronously, and the size of the inner diameter of the depth hole 1 to be measured can be calculated by comparing the readings of the dial indicator 5.

[0041] In this embodiment, by setting the pull rod 2, the longitudinal height of the pull rod 2 can be adjusted to extend the measuring rod 3 into different hole depths, so that the measurement is convenient and fast, the structure is simple, and the applicability is high.

[0042] In this embodiment, the ruler 40, the measuring rod 3, the fixed probe 9, the sliding probe 4, the fixing seat 6, and the dial indicator 5 are all detachable and installable. When the measuring tool is not in use, the various parts of the measuring tool can be disassembled to reduce storage space.

[0043] Preferably, the fixing seat 6 and the measuring rod 3, and the measuring rod 3 and the pull rod 2 are connected by bolts.

[0044] Furthermore, as a preferred embodiment, the other end of the measuring rod 3 has a sliding cavity 31, one end of the sliding probe 4 is slidably disposed in the sliding cavity 31, and the other end extends to the outside through the side wall of the sliding cavity 31, and a spring 8 is provided in the sliding cavity 31, and the spring 8 is located between the sliding probe 4 and the side wall of the sliding cavity 31.

[0045] Furthermore, as a preferred embodiment, the side wall of the measuring rod 3 is provided with a long hole 32 connected to the sliding cavity 31 , and the shift rod extends to the outside through the long hole 32 and contacts with the measuring rod of the dial indicator 5 in a limiting manner.

[0046] Furthermore, as a preferred embodiment, the fixing seat 6 is provided with a sliding hole, and the measuring rod sleeve of the dial indicator 5 is slidably installed in the sliding hole; the locking structure includes a locking hole arranged on the side of the fixing seat 6 and vertically connected with the sliding hole, and a locking bolt 7 threadedly installed at the locking hole. By tightening the locking bolt 7 to resist and lock the measuring rod sleeve of the dial indicator 5, the position of the dial indicator 5 on the fixing seat 6 can be adjusted by the locking bolt 7, and the adjustment is convenient.

[0047] Further, as a preferred embodiment, one end of the measuring rod 3 has a mounting groove, a fixing sleeve 10 is provided in the mounting groove, and the fixed measuring head 9 is slidably disposed in the fixing sleeve 10;

[0048] A fixing hole is provided on the side wall of one end of the measuring rod 3, and an avoidance hole 101 connected to the fixing hole is provided on the fixing sleeve 10. A fixing bolt 20 is threadedly installed at the fixing hole, and the fixing bolt 20 is tightened to fix the fixed probe 9 in the fixing sleeve 10.

[0049] In this embodiment, the fixed probe 9 can be adjusted to be transversely telescopic by means of the fixing bolt 20 to meet the measurement work of different apertures and further improve the applicability.

[0050] Furthermore, as a preferred embodiment, in order to prevent the fixed probe 9 from detaching from the measuring rod 3, a limit groove 91 is provided on the side wall of the fixed probe 9, and the length direction of the limit groove 91 is consistent with the length direction of the measuring rod 3, and the bottom of the limit groove 91 is pressed by the fixing bolt 20 to fix the fixed probe 9. When the fixed probe 9 extends outward or contracts inward to the maximum position, the two lateral side walls of the limit groove 91 can limit the fixed probe 9.

[0051] More preferably, the ends of the fixed probe 9 and the sliding probe 4 that are away from each other are both conical structures.

[0052] Furthermore, as a preferred embodiment, an adjustment structure 30 is provided between the straightedge 40 and the pull rod 2 for adjusting the height of the pull rod 2; the adjustment structure 30 comprises: an adjustment cylinder 301, the adjustment cylinder 301 is installed in the middle of the straightedge 40, the bottom of the pull rod 2 slides through the adjustment cylinder 301 in sequence, and the measuring rod extends to the bottom of the straightedge 40, and an adjustment bolt 302 is provided between the adjustment cylinder 301 and the pull rod 2 for fixing the pull rod 2.

[0053] In this embodiment, the pull rod 2 can be adjusted in longitudinal height by loosening the adjusting bolt 302. After the adjustment, the pull rod 2 can be locked in height by tightening the adjusting bolt 302, so the adjustment is convenient and quick.

[0054] More preferably, the adjusting bolt 302, the fixing bolt 20 and the locking bolt 7 in this embodiment are all knurled bolts.

[0055] Furthermore, as a preferred embodiment, the side wall of the adjusting cylinder 301 is provided with an adjusting hole connected with the adjusting cylinder 301 , and the adjusting bolt 302 is threadedly installed in the adjusting hole, and the adjusting bolt 302 is tightened to abut against the fixed pull rod 2 .

[0056] More preferably, a spring jacket 303 is provided between the adjustment tube 301 and the pull rod 2 and between the fixing seat 6 and the measuring rod sleeve of the dial indicator 5 , and the spring jacket 303 is sleeved on the outside of the pull rod 2 / measuring rod sleeve of the dial indicator 5 .

[0057] Furthermore, as a preferred embodiment, the pull rod 2 and the measuring rod 3 are fixed by bolts.

[0058] Furthermore, as a preferred embodiment, both ends of the straightedge 40 have flat pads 11 .

[0059] Preferably, the flat washer 11 is fixed to the straightedge 40 by screws.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for measuring the inner diameter of a deep hole, characterized in that: include: A ruler, wherein a pull rod is provided in the middle of the ruler, the pull rod is arranged longitudinally and can be adjusted longitudinally; A measuring rod, wherein the measuring rod and the pull rod are vertically distributed, and the middle portion of the measuring rod is detachably connected to the bottom portion of the pull rod; A fixed measuring head, which is detachably connected to one end of the measuring rod and can be telescopically adjusted in the lateral direction; A sliding probe, which is elastically mounted on the other end of the measuring rod and can slide laterally; A fixing seat, the fixing seat being detachably mounted on the rod wall at the other end of the measuring rod; A dial gauge, the dial gauge is mounted on the fixed seat in a lateral sliding manner, the sliding probe is provided with a lever, and the measuring rod of the dial gauge is in contact with the lever; A locking structure is provided between the dial indicator and the fixing seat, and is used for locking the dial indicator to the fixing seat.

2. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: The other end of the measuring rod has a sliding cavity, one end of the sliding probe is slidably arranged in the sliding cavity, and the other end extends to the outside through the side wall of the sliding cavity. A spring is arranged in the sliding cavity, and the spring is located between the sliding probe and the side wall of the sliding cavity.

3. The tool for measuring the inner diameter of a deep hole according to claim 2, characterized in that: The side wall of the measuring rod is provided with an elongated hole communicating with the sliding cavity, and the shift rod extends to the outside through the elongated hole and contacts with the measuring rod of the dial indicator in a limiting manner.

4. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: The fixing seat is provided with a sliding hole, and the measuring rod sleeve of the dial gauge is slidably installed in the sliding hole; The locking structure comprises a locking hole provided on the side of the fixing seat and vertically connected with the sliding hole, and a locking bolt threadedly installed at the locking hole. The locking bolt is tightened to counteract and lock the measuring rod sleeve of the dial indicator.

5. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: One end of the measuring rod has a mounting groove, a fixing sleeve is provided in the mounting groove, and the fixed measuring head is slidably arranged in the fixing sleeve; A fixing hole is provided on the side wall of one end of the measuring rod, and an avoidance hole connected to the fixing hole is provided on the fixing sleeve. A fixing bolt is threadedly installed at the fixing hole, and the fixing bolt is tightened to fix the fixed probe in the fixing sleeve.

6. The tool for measuring the inner diameter of a deep hole according to claim 5, characterized in that: A limiting groove is provided on the side wall of the fixed measuring head, the length direction of the limiting groove is consistent with the length direction of the measuring rod, and the fixing bolt is pressed against the bottom of the limiting groove to fix the fixed measuring head.

7. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: An adjustment structure is provided between the level ruler and the pull rod for adjusting the height of the pull rod; The regulatory structure comprises: An adjusting cylinder is installed in the middle of the flat ruler, the bottom of the pull rod slides through the adjusting cylinder in sequence, and the measuring rod extends to the bottom of the flat ruler, and an adjusting bolt is provided between the adjusting cylinder and the pull rod for fixing the pull rod.

8. The tool for measuring the inner diameter of a deep hole according to claim 7, characterized in that: The side wall of the adjusting cylinder is provided with an adjusting hole which is in communication with the adjusting cylinder. The adjusting bolt is threadedly installed in the adjusting hole. The adjusting bolt is tightened to abut and fix the pull rod.

9. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: The pull rod and the measuring rod are fixed by bolts.

10. The tool for measuring the inner diameter of a deep hole according to claim 1, characterized in that: Both ends of the flat ruler are provided with flat pads.

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