Hard alloy cutter mechanical connecting device
By setting a notch in the side wall of the stepped cylinder of the carbide tool and opening a through hole in the side wall of the steel part, and using flat-head screws to fix the steel part and the stepped cylinder, the problem of difficulty and high cost in thread processing of ultra-long tools is solved, and the problem is achieved. Extending the tool and shortening the machining cycle.
Patent Information
- Application Number
- CN202420322673.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-21
AI Technical Summary
When manufacturing tools exceeding the length of standard carbide round rods, the difficulty and cost of machining internal or external threads is high, and the period of custom rod materials is long, resulting in extended processing cycles and increased costs.
By setting two sets of notches on the side wall of the stepped cylinder of the carbide tool, and opening corresponding through holes on the side walls of the steel parts, with threaded grooves inside, flat-head screws are used to fix the steel parts and the stepped cylinder to achieve Tool extension.
This method simplifies the thread processing process, reduces the processing difficulty and cost, shortens the processing cycle, and achieves effective extension of the tool through precision grinding.
Smart Images
Figure CN222370569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tool mechanical connection, in particular to a hard alloy tool mechanical connection device. Background Art
[0002] In the production and processing of parts, solid carbide round bar tools are often used. Such tools are usually ground from carbide round bars. The standard carbide bar length is generally 310mm to 330mm. It is very difficult to manufacture tools that exceed the standard bar length and need to make internal or external threads on the shank.
[0003] First, machining internal or external threads on cemented carbide is difficult and requires high grinding wheels for machine tools. Second, because the tool exceeds the standard bar length, non-standard custom bars are often required. Custom bar lengths are long and costly, and cemented carbide thread machining is also difficult and costly.
[0004] Therefore, when some extra-long tools that are subjected to axial force need to make internal or external threads on the shank, standard bars + steel parts are used to extend them, which reduces the processing difficulty, facilitates the processing of threads, saves processing cycles, and saves processing costs. Utility Model Content
[0005] The purpose of the utility model is to provide a mechanical connection device for cemented carbide tools, by arranging two groups of notches on the side wall of a step cylinder, and the two groups of notches are arranged in a circle on the side wall of the step cylinder, and at the same time, through holes corresponding to the two groups of notches are opened on the side wall of the steel part, and threaded grooves are opened inside the through holes to facilitate the passage of a flat head screw through the through hole so that the bottom end of the flat head screw is clamped with the notch, thereby fixing the steel part and the step cylinder, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A mechanical connection device for cemented carbide tools comprises a cemented carbide body and a steel part. A stepped cylinder is arranged at one end of the cemented carbide body, two groups of notches are opened on the side wall of the stepped cylinder, and two groups of through holes corresponding to the positions of the notches are opened on the side wall of the steel part. The notches on the side wall of the stepped cylinder and the through holes on the side wall of the steel part are fixed by flat head screws.
[0008] Preferably, the two groups of notches are configured as notches with degrees and are arranged in a degree circle on the side wall of the step cylinder.
[0009] Preferably, the shapes of the two groups of recesses are set to be trapezoidal recesses.
[0010] Preferably, the port of the step cylinder away from the cemented carbide body is arranged as an arc head, and the side wall of the other end of the cemented carbide body is provided with a thread.
[0011] Preferably, an inner hole is formed inside the steel part, and arc openings are formed at both ends of the inner hole.
[0012] Preferably, the diameter of the notch is the same as the diameter of the inner hole inside the steel part.
[0013] Preferably, a thread groove is provided inside the through hole.
[0014] Preferably, the inner wall of the recess is snap-fitted to the bottom end of the flat head screw.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model has two groups of notches on the side wall of the step cylinder, and the two groups of notches are arranged in a circle on the side wall of the step cylinder; an inner hole is provided inside the steel part, arc openings are provided at both ends of the inner hole, and two groups of through holes are provided at positions on the side wall of the steel part corresponding to the two groups of notches on the side wall of the step cylinder, and thread grooves are provided inside the through holes; an operator sleeves the steel part on the outside of the step cylinder, uses a flat head screw to thread the thread grooves inside the through holes, and fixes the carbide body and the steel part by clamping and fixing the bottom end of the flat head screw to the inner wall of the notch on the side wall of the step cylinder, thereby fixing the position of the carbide body and the steel part; after fine grinding, the tool is extended, the processing cycle is saved, the processing difficulty is reduced, and the cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the steel part of the utility model;
[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the steel part of the utility model.
[0021] In the figure: 1, carbide body; 2, tool edge; 3, stepped cylinder; 4, arc head; 5, recess; 6, steel part; 7, arc mouth; 8, through hole; 9, thread groove; 10, inner hole. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0023] See also Figures 1 to 4 , the utility model provides a technical solution:
[0024] A mechanical connection device for cemented carbide tools comprises a cemented carbide body 1 and a steel part 6. A stepped cylinder 3 is arranged at one end of the cemented carbide body 1. Two groups of notches 5 are formed on the side wall of the stepped cylinder 3. Two groups of through holes 8 corresponding to the positions of the notches 5 are formed on the side wall of the steel part 6. The notches 5 on the side wall of the stepped cylinder 3 and the through holes 8 on the side wall of the steel part 6 are fixed by means of flat head screws.
[0025] By setting a step cylinder 3 at one end of the cemented carbide body 1, two groups of recesses 5 are opened on the side wall of the step cylinder 3, and at the same time, through holes 8 are opened on the side wall of the steel part 6 at positions corresponding to the two groups of recesses 5. The installer only needs to put the steel part 6 on the outside of the step cylinder 3, and use flat head screws to pass through the through holes 8 and the recesses 5 to fix the step cylinder 3 and the steel part 6.
[0026] The two groups of notches 5 are set as notches with degrees and are arranged in a 90-degree circle on the side wall of the step cylinder 3. By setting the two groups of notches 5 as notches with degrees and the two groups of notches 5 are arranged in a 90-degree circle on the side wall of the step cylinder 3, it is convenient for the steel part 6 to open corresponding through holes 8 according to the notches 5 on the side wall of the step cylinder 3, so as to facilitate the flat head screw arc opening 7 to fix the step cylinder 3 and the steel part 6.
[0027] The shapes of the two groups of recesses 5 are set to be trapezoidal recesses. By setting the shape of the recesses 5 to be trapezoidal recesses, the bottom end of the flat head screw passes through the through hole 8 and is clamped with the inner wall of the recess 5, so that the step cylinder 3 and the steel part 6 are clamped and fixed.
[0028] The port of the step cylinder 3 away from the carbide body 1 is set as an arc head 4, and the side wall of the other end of the carbide body 1 is provided with a thread 2. By setting the port of the step cylinder 3 away from the carbide body 1 as an arc head 4, the arc head 4 is set so that the steel part 6 can be better sleeved on the outside of the step cylinder 3, thereby increasing the efficiency of the installation of the steel part 6.
[0029] An inner hole 10 is opened inside the steel part 6, and arc openings 7 are opened at both ends of the inner hole 10. By opening the inner hole 10 inside the steel part 6, and arc openings 7 are opened at both ends of the inner hole 10, the size of the arc opening 7 is the same as the arc head 4, so that it can be more quickly sleeved on the outside of the step cylinder 3.
[0030] The diameter of the recess 5 is the same as the diameter of the inner hole 10 inside the steel part 6. At the same time, the diameter of the recess 5 is also set to be the same as the diameter of the inner hole 10 inside the steel part 6, so that the steel part 6 can be mutually connected with the step cylinder 3, thereby increasing the stability of the installation of the steel part 6 and the step cylinder 3.
[0031] A thread groove 9 is provided inside the through hole 8, and the thread groove 9 is provided inside the through hole 8 to facilitate the flat head screw to pass through the thread groove 9, so that the bottom end of the flat head screw and the inner wall of the recess 5 are mutually engaged to fix the step cylinder 3 and the steel part 6.
[0032] The inner wall of the recess 5 is clamped with the bottom end of the flat head screw. By setting the inner wall of the recess 5 to be clamped with the bottom end of the flat head screw, the step cylinder 3 and the steel part 6 are clamped and fixed. This method can more conveniently fix and lengthen the step cylinder 3 and the steel part 6.
[0033] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A mechanical connection device for cemented carbide tools, characterized in that: The invention comprises a hard alloy body (1) and a steel part (6), wherein a stepped cylinder (3) is arranged at one end of the hard alloy body (1), two groups of notches (5) are opened on the side wall of the stepped cylinder (3), and two groups of through holes (8) corresponding to the positions of the notches (5) are opened on the side wall of the steel part (6), and the notches (5) on the side wall of the stepped cylinder (3) and the through holes (8) on the side wall of the steel part (6) are fixed by means of flat head screws.
2. A cemented carbide tool mechanical connection device according to claim 1, characterized in that: The two groups of notches (5) are configured as notches with degrees and are arranged on the side wall of the stepped cylinder (3) in a 90-degree circle.
3. A cemented carbide tool mechanical connection device according to claim 2, characterized in that: The shapes of the two groups of notches (5) are set to be trapezoidal notches.
4. A cemented carbide tool mechanical connection device according to claim 3, characterized in that: The end of the stepped cylinder (3) away from the hard alloy body (1) is arranged as an arc head (4), and the other end side wall of the hard alloy body (1) is provided with a thread (2).
5. A cemented carbide tool mechanical connection device according to claim 4, characterized in that: An inner hole (10) is formed inside the steel part (6), and arc openings (7) are formed at both ends of the inner hole (10).
6. A cemented carbide tool mechanical connection device according to claim 5, characterized in that: The diameter of the notch (5) is the same as the diameter of the inner hole (10) inside the steel part (6).
7. A cemented carbide tool mechanical connection device according to claim 1, characterized in that: A thread groove (9) is provided inside the through hole (8).
8. A mechanical connection device for cemented carbide tools according to claim 7, characterized in that: The inner wall of the recess (5) is clamped with the bottom end of the flat head screw.