Deep hole testing fixture for laser tracker
By designing the laser tracker deep hole detection tool, the problem that the laser tracker cannot measure the depth of the deep hole and inner groove structure is solved, and the various measurement requirements are met and measurement accuracy is guaranteed.
Patent Information
- Application Number
- CN202422545320.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-22
AI Technical Summary
Existing laser trackers cannot effectively measure the hole depth and inner groove structure of deep holes, and there are application limitations.
A laser tracker deep hole detector is designed, including a laser tracker, body, stop and replaceable probe. Through the coaxial connection of the stop and the main body and the threaded connection of the probe, the measurement of the hole depth, inner groove depth and width can be achieved.
The measurement range of the laser tracker has been expanded to ensure the accuracy and consistency of measurement accuracy, and can scientifically measure the hole depth and inner groove structure parameters.
Smart Images
Figure CN223216856U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of length measurement, and in particular relates to a deep hole inspection tool of a laser tracker. Background Art
[0002] Laser trackers use a reflective target to measure laser distance. However, they have significant limitations when measuring deep hole features. Currently, they can only measure hole diameter and position. During measurement, the cylindrical lower portion of the measuring base is placed in contact with the inner wall of the hole. The laser tracker records the coordinates of the target at each position and can then calculate the hole diameter or position error.
[0003] The aforementioned measurement method can only measure parameters such as deep hole diameter and positional error. Due to the limited functionality of the measuring base's design, it cannot meet the requirements for measuring hole depth, let alone complex deep holes with internal grooves. Therefore, its practical application is significantly limited. Utility Model Content
[0004] The utility model provides a deep hole inspection tool of a laser tracker, and the technical problem to be solved is to realize the measurement of parameters such as hole depth, groove depth and width in the deep hole.
[0005] In order to solve the above technical problems, the utility model provides a laser tracker deep hole inspection fixture, which is characterized in that it includes a laser tracker, a main body, a block, and a replaceable probe; the target ball of the laser tracker is coaxially connected to the upper end of the main body, the block is nested on the main body, and the block can be fixed at any position of the main body; the replaceable probe is threadedly connected to the lower end of the main body.
[0006] Beneficial Effects: This utility model can connect to different probes through the main body, thereby meeting various measurement requirements such as hole depth and internal groove structure, expanding the application range of laser trackers. At the same time, the block remains perpendicular to the main body, and the probe, main body, and target sphere are concentric with each other, ensuring minimal loss of measurement accuracy during the reference transfer process and scientifically accurate measurement results. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 Schematic diagram of the structure of this utility model;
[0008] Figure 2 Schematic diagram of three structures of replaceable probes;
[0009] Figure 3 Schematic diagram of hole depth measurement;
[0010] Figure 4 Schematic diagram of groove depth measurement in a hole
[0011] Figure 5 Schematic diagram of measuring the width of the groove in the hole. DETAILED DESCRIPTION
[0012] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation methods of the present invention are further described in detail below.
[0013] The utility model proposes a laser tracker deep hole inspection tool, comprising a laser tracker, a main body 2, a stopper 4, and a replaceable probe 5;
[0014] The laser tracker's target sphere 1 is coaxially connected to the upper end of the main body 2 and can be secured together by magnetic attraction. A stopper 4 is nested within the main body 2 and can slide up and down. The stopper's positioning surface is perpendicular to the main body 2 and is used to level the measured reference surface. A set screw 3 can secure the stopper 4 to any position on the main body 2.
[0015] The replaceable probe 5 is threadedly connected to the lower end of the main body 2, and the target ball 1, the main body 2 and the replaceable probe 5 are all concentric with each other.
[0016] The style of the replaceable probe 5 is as follows Figure 3 As shown, there are a plane probe 6, a spherical probe 7, and a disc probe 8, and the connecting threads of each probe have the same size.
[0017] The disc probe can be used to measure the inner groove depth and inner groove width;
[0018] The plane probe 6 can be used to measure the depth of the plane hole bottom;
[0019] Spherical probes can be used to measure the depth of the bottom of a tapered hole.
[0020] When measuring the depth of a hole, Figure 3 As shown: Install the plane probe 3. First, level the lower surface of the plane probe 3 with the lower surface of the block. The laser tracker reads the target ball position. Extend the main body 2. After the plane probe 3 contacts the bottom surface of the hole, the laser tracker reads the target ball position again to measure the hole depth.
[0021] When measuring the depth of the groove structure in the hole, Figure 4 As shown: Install the disc probe 3. First, align the lower surface of the disc probe 3 with the lower surface of the stopper 1. The laser tracker reads the target ball's position. Extend the main body 2, allowing the disc probe 3 to contact the upper and lower surfaces of the inner groove. The laser tracker reads the corresponding position of the target ball. This measures the inner groove depth parameters of the hole.
[0022] When measuring the width of the groove structure in the hole, Figure 5 As shown: Install the disc probe 3. First, place the upper surface of the disc probe 3 in contact with the upper surface of the inner groove. The laser tracker reads the target ball's position. Extend the main body 2. Place the lower surface of the disc probe 3 in contact with the lower surface of the inner groove. The laser tracker reads the target ball's position. This measures the inner groove width of the hole.
[0023] This new model can connect to various probes through the main body, meeting various measurement requirements such as hole depth and internal groove structure, thus expanding the application range of laser trackers. Furthermore, the block remains perpendicular to the main body, and the probe, main body, and target sphere are concentric with each other, ensuring minimal loss of measurement accuracy during the datum transfer process and scientifically accurate measurement results.
[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A laser tracker deep hole inspection tool, characterized by: It includes a laser tracker, a main body, a block, and a replaceable probe; the target ball of the laser tracker is coaxially connected to the upper end of the main body, the block is nested on the main body, and the block can be fixed at any position of the main body; the replaceable probe is threadedly connected to the lower end of the main body.
2. The laser tracker deep hole inspection tool according to claim 1, characterized in that: The target ball and the main body of the laser tracker are fixed together by magnets.
3. The laser tracker deep hole inspection tool according to claim 1, characterized in that: The stopper is connected to the main body through a fastening screw.
4. The laser tracker deep hole inspection tool according to claim 1, characterized in that: The stopper is nested on the main body and can slide up and down.
5. The laser tracker deep hole inspection tool according to claim 1, characterized in that: The positioning surface of the stopper is perpendicular to the main body and is used for leveling with the reference surface to be measured.
6. The laser tracker deep hole inspection tool according to claim 1, characterized in that: The target ball, the main body and the replaceable probe are all concentric with each other.
7. A laser tracker deep hole inspection tool according to any one of claims 1 to 6, characterized in that: Interchangeable probes include flat probes, spherical probes, and disc probes.
8. The laser tracker deep hole inspection tool according to claim 7, characterized in that: The connecting thread sizes of plane probes, spherical probes and disk probes are the same.
9. The laser tracker deep hole inspection tool according to claim 7, characterized in that: The disc probe is used to measure the inner groove depth and inner groove width.
10. The laser tracker deep hole inspection tool according to claim 7, characterized in that: The plane probe is used to measure the depth of the bottom of a plane hole; the spherical probe is used to measure the depth of the bottom of a tapered hole.