Stepped end socket diameter measuring tool

Abstract

The utility model belongs to the technical field of seal head processing, in particular to a stepped seal head diameter measuring tool, which comprises a gauge rod horizontally mounted on a tool apron of a machine tool and a gauge stand mounted on the gauge rod and capable of sliding along a Y axis, and a measuring gauge for measuring the inner diameter of a seal head is mounted on the gauge stand. An adjusting screw for adjusting the position of the gauge stand on the Y axis is arranged at the joint of the gauge rod and the gauge stand, and a locking bolt for locking the adjusted gauge stand is arranged on the gauge rod; the numerical control vertical lathe tool apron adjusting dial gauge is horizontally installed on a numerical control vertical lathe tool apron, so that a Y-axis adjusting dial gauge is additionally arranged on the basis of the X axis and the Z axis to enable a gauge head to just measure the maximum value, namely the diameter portion, and at the moment, the measured value is accurate. A small guide rail groove is formed in the head portion of the gauge rod, and the gauge base can be driven by an adjusting screw to move front and back. As the tool apron is close to the diameter, the highest point, namely the diameter point, is found by utilizing the Z axis. And the diameter value can be obtained by reading the value and calculating.

Description

Technical Field

[0001] This utility model belongs to the field of end cap processing technology, specifically relating to a step-shaped end cap diameter measuring tool. Background Technology

[0002] Aerospace gas storage tank heads are important components used in the aerospace field for gas storage tanks. They come in various types, including conical heads, hemispherical heads, and elliptical heads.

[0003] The main manufacturing processes for end caps include spinning and stamping. One type of aerospace gas storage tank end cap has a stepped outer circle with a high top and is shielded by a flange seat. Due to external structural limitations, some parts cannot be detected, and there may be interference or height issues. The distance is too large for general measuring tools to measure, and the diameter of this circle is highly critical. However, calipers cannot measure the diameter of this circle during measurement. During machining, the small circle tool setting program can be used to ensure this dimension. The large circle diameter is calculated using the machine tool's digital coordinate system. The principle is to add twice the digital coordinate value to the measured value. However, CNC vertical lathes only have X and Z axes, and the dial indicator cannot be precisely aligned with the diameter of the circle.

[0004] After completion, the parts need to be inspected by a coordinate measuring machine. However, deviations often occur. If the size is too large, the parts need to be reworked, which wastes manpower and resources and delays time. If the size is too small, the parts can only be downgraded and delivered as defective products. If the deviation is serious, the parts will be scrapped, resulting in high losses.

[0005] To address the aforementioned issues, this application proposes a step-shaped head diameter measuring tool. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides a stepped head diameter measuring tool, which features the ability to accurately calculate the diameter size by measuring the inner diameter on a machine tool.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a stepped head diameter measuring tool, comprising a dial indicator rod horizontally mounted on a machine tool holder and a dial indicator base mounted on the dial indicator rod and slidable along the Y-axis, wherein a measuring gauge for measuring the inner diameter of the head is mounted on the dial indicator base, an adjusting screw for adjusting the position of the dial indicator base on the Y-axis is provided at the connection between the dial indicator rod and the dial indicator base, and a locking bolt for locking the dial indicator base after adjustment is provided on the dial indicator rod.

[0008] As a preferred technical solution of this utility model, the front end of the dial indicator is provided with a guide rail groove along the Y-axis, and both ends of the guide rail groove are provided with fixed covers. A first locking screw hole is provided through one side of the dial indicator where the guide rail groove is provided, and threaded grooves are also provided at the two ends of the dial indicator where the guide rail groove is provided.

[0009] As a preferred technical solution of this utility model, the end of the watch base near the watch rod is formed with a sliding guide rail that slides in the guide rail groove, and an adjustment screw hole is provided through the sliding guide rail along the Y-axis.

[0010] As a preferred technical solution of this utility model, the end of the base away from the stem is provided with a mounting groove for mounting the measuring instrument, and a second locking screw hole is provided to cooperate with the screw and lock the measuring instrument.

[0011] As a preferred technical solution of this utility model, the cover consists of two symmetrical pieces distributed at both ends of the guide rail groove, and a first hole and a second hole are formed through the cover.

[0012] As a preferred embodiment of this utility model, the adjusting screw passes through hole number 1 at one end and is threaded through the adjusting screw hole before passing through hole number 1 at the other end. A nut is threadedly connected to one end of the adjusting screw.

[0013] As a preferred technical solution of this utility model, the threaded groove is spirally connected with a sealing screw that passes through the No. 2 hole and fixes the cover to the meter rod.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention is horizontally mounted on a CNC vertical lathe tool holder, thereby adding a Y-axis adjustment dial indicator based on the X and Z axes so that the indicator head measures exactly at the maximum value, i.e., the diameter. Only at this point is the measurement accurate. This invention involves creating a small guide groove at the head of the indicator rod, allowing the indicator holder to move back and forth under the action of the adjusting screw, forming a small Y-axis. Since the tool holder is near the diameter, the highest point, i.e., the diameter point, is found using the Z-axis. The diameter value can then be obtained by reading the value and performing calculations.

[0015] This invention uses the measurable circle diameter as a reference and the coordinate display of a CNC machine tool to indirectly detect the diameter of an unmeasurable circle. The reference circle diameter can be measured with a micrometer with an accuracy of 0.01, while the machine tool's digital display coordinate accuracy is 0.001. The purpose of this detection tool is to find the maximum point position and use the machine tool's digital display to detect the workpiece, thereby realizing in-machine measurement, improving production efficiency, and ensuring product quality. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a top view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention from the front view.

[0019] Figure 3 These are schematic diagrams of the front and top views of the dial indicator rod in this utility model;

[0020] Figure 4 These are schematic diagrams of the top and front views of the base in this utility model.

[0021] Figure 5 This is a schematic diagram of the front and side views of the cover in this utility model;

[0022] In the diagram: 1. Measuring rod; 11. Guide rail groove; 12. First locking screw hole; 13. Threaded countersunk groove; 2. Measuring base; 21. Sliding guide rail; 22. Adjusting screw hole; 23. Mounting countersunk groove; 24. Second locking screw hole; 3. Measuring gauge; 4. Cover; 41. Hole No. 1; 42. Hole No. 2; 5. Adjusting screw; 6. Nut; 7. Sealing screw; 8. Locking bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Please see Figure 1-5 The present invention provides the following technical solution: a stepped end cap diameter measuring tool, comprising a dial indicator 1 horizontally mounted on a machine tool holder and a dial indicator base 2 mounted on the dial indicator 1 and slidable along the Y-axis, wherein a measuring gauge 3 for measuring the inner diameter of the end cap is mounted on the dial indicator base 2, and an adjusting screw 5 for adjusting the position of the dial indicator base 2 on the Y-axis is provided at the connection between the dial indicator 1 and the dial indicator base 2, and a locking bolt 8 for locking the dial indicator base 2 after adjustment is provided on the dial indicator 1. In this embodiment, the measuring gauge 3 is a lever dial indicator or a micrometer dial indicator.

[0026] Specifically, the front end of the dial indicator 1 is provided with a guide rail groove 11 along the Y-axis. Both ends of the guide rail groove 11 are provided with fixed covers 4. A first locking screw hole 12 is provided through the side of the dial indicator 1 where the guide rail groove 11 is provided. The two ends of the dial indicator 1 where the guide rail groove 11 is provided are also provided with threaded countersunk grooves 13. In this embodiment, the position of the dial indicator 1 where the guide rail groove 11 is not provided is directly fixed to the tool holder on the vertical machine tool and kept in a horizontal state. At the same time, in order to ensure the sliding distance of the dial indicator base 2, several first locking screw holes 12 are distributed along the guide rail groove 11, which can lock the dial indicator base 2 after sliding adjustment.

[0027] Specifically, the base 2 near the end of the stem 1 has a sliding guide rail 21 that slides in the guide rail groove 11. An adjustment screw hole 22 is provided through the sliding guide rail 21 along the Y-axis. In this embodiment, the guide rail groove 11 and the sliding guide rail 21 cooperate to ensure the sliding stability of the base 2 on the stem 1. By adjusting the screw hole 22 and cooperating with the adjusting screw 5, it has the advantages of convenient adjustment, high precision, good stability, and simple structure.

[0028] Specifically, the end of the base 2 away from the stem 1 has a mounting groove 23 for mounting the measuring instrument 3, and a second locking screw hole 24 that cooperates with the screw to lock the measuring instrument 3. In this embodiment, the measuring instrument 3 can be rotated after being inserted into the mounting groove 23, so that the dial faces the operator for easy reading of the value. Then, the measuring instrument 3 is locked onto the base 2 by the screw and the second locking screw hole 24.

[0029] Specifically, the cover 4 consists of two symmetrical pieces distributed at both ends of the guide rail groove 11. A first hole 41 and a second hole 42 are provided through the cover 4. The adjusting screw 5 passes through the first hole 41 at one end and is threaded through the adjusting screw hole 22 before passing through the first hole 41 at the other end. The adjusting screw 5 is threaded through one end and connected to a nut 6. In this embodiment, the cover 4 can not only limit the dial base 2 to slide in the dial rod 1, but also ensure the stable installation of the adjusting screw 5 and the nut 6, and also ensure the reliable cooperation between the adjusting screw 5 and the dial base 2.

[0030] Specifically, the threaded groove 13 is spirally connected with a sealing screw 7 that passes through the second hole 42 and fixes the cover 4 to the dial rod 1. In this embodiment, the sealing screw 7 seals the cover 4 at both ends of the guide rail groove 11. In order to ensure the stability of the cover 4, the number of the second hole 42 should be no less than two.

[0031] Working principle and usage process of this utility model:

[0032] 1. Install the dial indicator 1 on the tool holder of the vertical CNC lathe and keep it horizontal;

[0033] 2. Insert the base of the measuring instrument 3 into the mounting groove 23, adjust the dial to face the operator, and lock it in place by using bolts and the second locking screw hole 24;

[0034] 3. First, use an outside micrometer to measure the reference circle and record the value. If it is an internal hole, use an inside micrometer to measure the diameter of the internal hole and record the value. Rotate the lathe handwheel and move the tool holder to drive the dial indicator 1 to contact the reference circle. Rotate the adjusting screw 5 to make the dial indicator 2 and the measuring dial indicator 3 slide along the Y-axis on the dial indicator 1. Observe that the dial indicator needle stops at the highest point of the circle. Zero the dial indicator needle and zero the X coordinate of the machine tool. Rotate the handwheel pulse generator to make the dial indicator needle contact the outer circle to be tested and press the dial indicator to zero. At this time, record the X coordinate value of the machine tool.

[0035] 4. Calculate the diameter of the circle to be measured. The diameter of the circle is equal to the diameter of the reference circle plus twice the X-axis coordinate value. Calculate the allowance to determine the cutting amount and ensure dimensional requirements are met.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool for measuring the diameter of a stepped end cap, characterized in that: It includes a dial indicator rod (1) horizontally mounted on the machine tool holder and a dial indicator base (2) mounted on the dial indicator rod (1) and slidable along the Y-axis. A measuring gauge (3) for measuring the inner diameter of the end cap is mounted on the dial indicator base (2). An adjusting screw (5) for adjusting the position of the dial indicator base (2) on the Y-axis is provided at the connection between the dial indicator rod (1) and the dial indicator base (2). A locking bolt (8) for locking the dial indicator base (2) after adjustment is provided on the dial indicator rod (1).

2. The stepped head diameter measuring tool according to claim 1, characterized in that: The front end of the meter rod (1) is provided with a guide rail groove (11) along the Y-axis. Both ends of the guide rail groove (11) are provided with fixed covers (4). A first locking screw hole (12) is provided through one side of the meter rod (1) where the guide rail groove (11) is provided. The two ends of the meter rod (1) where the guide rail groove (11) is provided with threaded countersunk grooves (13).

3. The stepped head diameter measuring tool according to claim 2, characterized in that: The base (2) near the end of the stem (1) is formed with a sliding guide rail (21) that slides in the guide rail groove (11), and an adjustment screw hole (22) is provided through the sliding guide rail (21) along the Y axis.

4. The stepped head diameter measuring tool according to claim 3, characterized in that: The base (2) has an installation groove (23) for mounting the measuring instrument (3) at the end away from the measuring rod (1), and a second locking screw hole (24) for engaging with the screw and locking the measuring instrument (3).

5. The stepped head diameter measuring tool according to claim 2, characterized in that: The cover (4) consists of two symmetrical pieces distributed at both ends of the guide rail groove (11), and a first hole (41) and a second hole (42) are formed through the cover (4).

6. The stepped head diameter measuring tool according to claim 5, characterized in that: The adjusting screw (5) passes through the first hole (41) at one end and is threaded through the adjusting screw hole (22) before passing through the first hole (41) at the other end. The adjusting screw (5) is threaded through a nut (6) at one end.

7. The stepped head diameter measuring tool according to claim 5, characterized in that: The threaded groove (13) is spirally connected to a through hole (42) and a sealing screw (7) is used to fix the cover (4) to the gauge rod (1).

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