Special measuring tool for dovetail groove
By designing a special measuring tool for dovetail grooves, the problem of measuring the inclined surface dimensions of dovetail grooves in artillery parts was solved, enabling efficient and accurate mass production testing.
Patent Information
- Application Number
- CN202423212707.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing technologies struggle to accurately measure the apex dimensions of the dovetail groove on artillery parts, resulting in low measurement efficiency and failing to meet the testing requirements for mass production.
A special measuring tool for dovetail grooves has been designed, including a measuring main board. The dovetail groove is equipped with a hollow groove and a chamfer. It can simultaneously detect the slope, height and bottom width of the dovetail groove, and is suitable for measuring workpieces in mass production.
It enables accurate measurement of dovetail grooves, improves measurement efficiency, and is suitable for workpiece inspection in mass production.
Smart Images
Figure CN223500301U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a special measuring tool for dovetail grooves, belonging to the field of mechanical technology. Background Technology
[0002] One type of component in artillery products is a welded assembly structure with a dovetail groove. The dovetail has a bevel angle of 40°±5′, a groove height of 13, and a bottom width of 28.64. High tolerances are required, making measurement difficult. Vernier calipers are typically used. However, the measurement needs to be of the apex of the bevel. The caliper's flat head cannot accurately measure the apex, and it's necessary to simultaneously measure the apex of another dovetail groove in the horizontal direction. This measurement method is inefficient and cannot meet the testing requirements of mass production. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a special measuring tool for dovetail grooves. This special measuring tool can simultaneously detect whether the dimensions, height and bottom width of the inclined surface of the dovetail block structure are qualified.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a special measuring tool for dovetail grooves, including a measuring main board, on both sides of the measuring main board are provided a dovetail groove with the opening facing downward, and the two dovetail grooves are arranged at intervals; a hollow groove is provided in each of the two corners at the upper end of the dovetail groove, the two inclined surfaces of the dovetail groove are symmetrical, and a chamfer a is provided at the end of the inclined surface; the two corners at the lower end of the dovetail groove are both chamfer b; chamfer c is provided on both sides at the upper end of the measuring main board, and chamfer d is provided on the end face of the bottom of the measuring main board.
[0005] Furthermore, the two chamfers b of the dovetail groove are symmetrical.
[0006] Furthermore, the two chamfers at the top of the motherboard were measured to be symmetrical.
[0007] The beneficial effects of this utility model are: compared with the traditional inspection method of using an angle ruler and vernier caliper, this measuring tool can simultaneously detect whether the slope, height, bottom width and distance between two dovetail blocks of the dovetail groove are qualified. The measurement is more convenient, accurate and efficient, and suitable for measuring workpieces in mass production. Attached Figure Description
[0008] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] Figure 2 This is an enlarged schematic diagram of part I of this utility model.
[0011] Figure 3 This is a schematic diagram of the workpiece's structure.
[0012] Figure 4 This is a schematic diagram of the usage state of this utility model.
[0013] Numbering on the map:
[0014] 1. Measure the main board; 2. Empty groove; 3. Bevel; 4. Chamfer a; 5. Chamfer b; 6. Dovetail groove; 7. Chamfer c; 8. Chamfer d. Detailed Implementation
[0015] like Figure 1 As shown in Figure 4, a special measuring tool for dovetail grooves includes a measuring main board 1. Both sides of the measuring main board 1 have a downward-facing dovetail groove 6, with the two dovetail grooves 6 spaced apart. A hollow groove 2 is provided at each of the two upper corners of the dovetail groove 6. The two inclined surfaces 3 of the dovetail groove 6 are symmetrical, and a chamfer a4 is provided at the end of each inclined surface 3. Both lower corners of the dovetail groove 6 are chamfered b5, and the two chamfers b5 are symmetrical. Chamfers c7 are provided on both sides of the upper end of the measuring main board 1, and the two chamfers c7 are symmetrical. A chamfer d8 is provided on the bottom end face of the measuring main board 1.
[0016] The hollow groove 2 at the upper end of the dovetail groove 6 in the dovetail groove special measuring tool is designed to more effectively fit the special measuring tool with the workpiece without gaps, enabling more accurate dimensional measurement. The chamfer a4 on the inclined surfaces 3 on both sides of the dovetail groove 6 in the dovetail groove special measuring tool is designed to make it easier to see the fit of the measuring tool during the measurement of the workpiece, and to accurately determine whether there is any jamming during the use of the dovetail groove special measuring tool.
[0017] Measurement method: Place the inclined surfaces 3 on both sides of one dovetail groove 6 of the measuring device against the outer end of one dovetail block on the workpiece. Then, place the inclined surfaces 3 on both sides of the other dovetail groove 6 of the measuring device against the outer end of another dovetail block on the workpiece. Slide the measuring device from front to back. If there is no jamming or loosening, the workpiece accuracy meets the product drawing requirements. If jamming occurs, the workpiece does not meet the product drawing requirements and further processing is required. Compared with the traditional method of using vernier calipers to measure angle dimensions, this measuring tool can simultaneously measure the slope, height, bottom width, and distance between two dovetail blocks to ensure compliance. Measurement is more convenient, accurate, and efficient, making it suitable for measuring workpieces in mass production.
Claims
1. A special measuring tool for dovetail grooves, characterized in that: The measuring motherboard (1) includes a dovetail groove (6) with an opening facing downward on both sides of the measuring motherboard (1), and the two dovetail grooves (6) are arranged at intervals; a hollow knife groove (2) is provided in each of the two corners at the upper end of the dovetail groove (6); the two inclined surfaces (3) of the dovetail groove (6) are symmetrical from left to right, and a chamfer a (4) is provided at the end of the inclined surface (3); the two corners at the lower end of the dovetail groove (6) are both chamfer b (5); chamfer c (7) is provided on both sides at the upper end of the measuring motherboard (1), and chamfer d (8) is provided on the bottom end face of the measuring motherboard (1).
2. The dovetail groove measuring tool according to claim 1, characterized in that: The two chamfers b (5) of the dovetail groove (6) are symmetrical.
3. The dovetail groove measuring tool according to claim 1, characterized in that: The two chamfers c (7) at the top of the main board (1) are symmetrical.