Detection tool for detecting height difference of step surface in hole of inner hole part
By designing a detection worker for detecting the height difference of the inner hole parts, combined with the design of thousands of meters and lock screws, it solves the problem of large detection errors in existing technologies, and achieves high -precision and high efficiency detection effects.
Patent Information
- Application Number
- CN202421283168.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The prior art is difficult to detect the height difference between the upper end surface of the cylinder and the step plane in the inner hole parts with high accuracy, resulting in large detection errors, low accuracy and low efficiency, making it difficult to meet application needs.
Design a detection worker, including the cylindrical workstor and a thousand tables. By placing the measuring rod of the thousands of tables in the center of the workstor, the lock screw is locked with the tight screw The platform with high graphic accuracy will face the measurement head and the lower end of the workers' body, and achieve a high -precision measurement of the height difference.
A high -precision detection of the upper end surface and steps of the circular parts in the inner hole parts, the measurement process is simple and fast, the detection efficiency is high, and can meet the application needs.
Smart Images
Figure CN222418869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a part detection tool, in particular to a detection tool used for detecting the height difference of the step surface in the hole of an inner hole part. Background Art
[0002] Parts with many internal pore structures often need to be sized. For example Figure 1 and Figure 2 An inner hole part shown in the figure is provided with a center hole 4 (through hole or blind hole) which is open at the upper end and is circular on the part body 1. The circumferential hole wall in the middle and upper part of the center hole 4 is thinned to form a circular countersunk hole 2. The bottom of the countersunk hole 2 forms a circular step plane 3. A vertical cylinder 5 is provided at the center position of the center hole 4. The upper end surface of the cylinder 5 is located in the center hole 4 and is slightly higher than the step plane 3. According to application requirements, it is necessary to detect the height difference △h between the upper end surface of the cylinder 5 and the step plane 3. The design value of the height difference △h is 0.15±0.02mm, and very high precision is required.
[0003] The traditional way to detect the height difference △h between the upper end surface of the cylinder 5 and the step plane 3 in the above-mentioned inner hole part is: first measure the depth of the two steps respectively with a depth gauge, and then subtract the height of the step plane 3 from the height of the upper end surface of the cylinder 5 to obtain the height difference △h between the two. For this traditional method, for the upper end surface of the cylinder 5, because it is located at the center position in the center hole 4, the surrounding space is relatively large, and the measurement operation is basically unaffected. However, the step plane 3 is located on the hole wall and has a very small width, so the measurement is very difficult and very inaccurate, so the detection error is large, the accuracy is low, and the efficiency is low, which is difficult to meet application requirements. Utility Model Content
[0004] The purpose of the utility model is to solve the above problems and provide a detection tool with high detection accuracy and high efficiency for detecting the height difference of the step surface in the hole of an inner hole part.
[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0006] A detection tool for detecting the height difference of the step surface in the hole of an inner hole part, comprising a cylindrical tool body and a micrometer, with the center line direction of the tool body as the vertical direction, the lower end surface of the tool body as a horizontal plane (its flatness is relatively high and can be easily achieved using existing technology), the tool body is provided with a vertical central through hole, and a vertical opening groove is provided in the upper middle part of the hole wall of the central through hole, which is open at the upper end and the opposite sides, a locking screw hole is provided on one vertical groove wall of the opening groove, and a locking through hole is provided on the other vertical groove wall, the screw rod of the locking screw passes through the locking through hole and is connected to the locking screw hole, the measuring rod of the micrometer is vertical and its lower end is a measuring head, and the measuring rod of the micrometer is placed in the central through hole.
[0007] Preferably, in order to provide a more reliable and stable positioning function for the measuring rod of the micrometer, the opening groove is located in the transverse middle of the central through hole, and the locking screw hole, the locking through hole and the locking screw are two and are respectively located on both sides of the central through hole.
[0008] Preferably, in order not to affect the operation, the locking through hole is a countersunk hole.
[0009] The beneficial effects of the utility model are:
[0010] The utility model combines a tool body with a micrometer. When in use, it is only necessary to first place the measuring rod of the micrometer in the central through hole of the tool body, and use a platform with high plane accuracy (which is a mature component in the prior art) to align the measuring head of the micrometer with the lower end surface of the tool body and set them to zero position, then use a locking screw to lock the measuring rod of the micrometer and the tool body, and then place the tool body in the countersunk hole of the inner hole part to be detected, the part close to the outer periphery in the lower end surface of the tool body is in close contact with the step plane of the inner hole part, the upper end of the cylinder of the inner hole part is placed in the central through hole of the tool body, and the upper end of the cylinder of the inner hole part pushes the measuring head of the micrometer to move upward by a micro distance, and the moving distance is displayed on the dial of the micrometer. The moving distance is the height difference between the upper end surface of the cylinder in the inner hole part and the step plane. The measuring accuracy is determined by the accuracy of the micrometer and the machining accuracy of each plane, which can be well controlled by the prior art, so the detection accuracy is high, the measuring process is simple and fast, the detection efficiency is high, and the application requirements can be well met. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a top-down stereogram of an inner hole part;
[0012] Figure 2 It is a main view of a cross-sectional view of an inner hole part;
[0013] Figure 3It is a top perspective view of the detection tooling for detecting the height difference of the step surface in the hole of the inner hole part before being assembled;
[0014] Figure 4 It is a top view of the detection tooling for detecting the height difference of the step surface in the hole of the inner hole part described in the utility model before assembly;
[0015] Figure 5 It is a bottom-up stereoscopic view of the detection tooling for detecting the height difference of the step surface in the hole of an inner hole part described in the utility model after being assembled. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings:
[0017] like Figure 3-Figure 5 As shown, the detection tooling for detecting the height difference of the step surface in the hole of an inner hole part described in the utility model includes a cylindrical tooling body 9 and a micrometer 6, with the center line direction of the tooling body 9 as the vertical direction, and the lower end surface of the tooling body 9 as a horizontal plane (its flatness is relatively high and can be easily achieved by using the existing technology), the tooling body 9 is provided with a vertical central through hole 10, and a vertical opening groove 11 is provided in the upper middle part of the hole wall of the central through hole 10 and is open at the upper end and the opposite sides, a locking screw hole is provided on one vertical groove wall of the opening groove 11 (not visible in the figure, but easy to understand), and a locking through hole 12 is provided on the other vertical groove wall, the screw rod of the locking screw 13 passes through the locking through hole 12 and is connected to the locking screw hole, the measuring rod 7 of the micrometer 6 is vertical and its lower end is a measuring head 8, and the measuring rod 7 of the micrometer 6 is placed in the central through hole 10.
[0018] Preferably, in order to provide a more reliable and stable positioning function for the measuring rod 7 of the micrometer 6, the opening groove 11 is located in the transverse middle of the central through hole 10, and the locking screw hole, locking through hole 12 and locking screw 13 are all two and are respectively located on both sides of the central through hole 10; in order not to affect the operation, the locking through hole 12 is a countersunk hole.
[0019] like Figure 1-Figure 5As shown, when in use, first place the measuring rod 7 of the micrometer 6 in the central through hole 10 of the tool body 9, use a platform with high plane accuracy (this is a mature component in the prior art, and a general workbench with high accuracy can be used) to align the measuring head 8 of the micrometer 6 with the lower end surface of the tool body 9 and set them to zero position, then use the locking screw 13 to lock the measuring rod 7 of the micrometer 6 and the tool body 9, and then place the tool body 9 in the countersunk hole 2 of the inner hole part to be tested, and the part of the lower end surface of the tool body 9 close to the outer periphery is in close contact with the step plane 3 of the inner hole part The upper end of the cylinder 5 of the inner hole part is placed in the central through hole 10 of the tooling body 9. The upper end of the cylinder 5 of the inner hole part pushes the measuring head 8 of the micrometer 6 to move upward at a micrometer distance. The moving distance is displayed on the dial of the micrometer 6. The moving distance is the height difference △h between the upper end surface of the cylinder 5 in the inner hole part and the step plane 3. The measurement accuracy is determined by the accuracy of the micrometer 6 and the machining accuracy of each plane, which can be well controlled by the existing technology. Therefore, the detection accuracy is high, the measurement process is simple and fast, and the detection efficiency is high, which can well meet the application requirements.
[0020] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.
Claims
1. A detection tool for detecting the height difference of the step surface in the hole of an inner hole part, comprising a cylindrical tool body, characterized in that: It also includes a micrometer, with the center line direction of the tool body as the vertical direction, the lower end surface of the tool body as the horizontal plane, the tool body is provided with a vertical center through hole, the middle and upper part of the hole wall of the center through hole is provided with a vertical open groove which is open at the upper end and the opposite sides, a locking screw hole is provided on one vertical groove wall of the open groove, and a locking through hole is provided on the other vertical groove wall, the screw rod of the locking screw passes through the locking through hole and is connected with the locking screw hole, the measuring rod of the micrometer is vertical and its lower end is a measuring head, and the measuring rod of the micrometer is placed in the center through hole.
2. The detection tool for detecting the height difference of the step surface in the hole of an inner hole part according to claim 1, characterized in that: The opening groove is located in the transverse middle of the central through hole, and the locking screw hole, the locking through hole and the locking screw are all two and are respectively located on both sides of the central through hole.
3. The detection tool for detecting the height difference of the step surface in the hole of an inner hole part according to claim 1 or 2, characterized in that: The locking through hole is a countersunk hole.