Five-edge burnishing knife
Through the design of the five-edge extrusion knife, the roughness and quality problems of hole wall after turning are solved, the hole processing effect and dimensional accuracy required for high gloss are achieved, the metal debris is avoided, and the wear resistance and use of the tool is improved. life.
Patent Information
- Application Number
- CN202420074518.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-11
AI Technical Summary
After turning, the roughness effect is poor, and the metal hole processing required by high gloss is difficult. The accumulation of chips in front of the cutting edge of ordinary reamers causes hair removal and scratching of the hole wall, affecting the surface quality.
Using a five-edged light-extruded knife, designed as a pentagonal column structure at the front end and a cylindrical handle at the rear end. There are cylindrical blades at the five corners, and the blade is at a 15-degree angle to form an integrated structure to avoid chip drainage and ensure tooling Processing in extruded state reduces vibration and positioning errors.
The hole wall quality and dimensional accuracy required for high gloss are achieved, the generation of metal debris is avoided, the processing accuracy and wear resistance are improved, and the tool service life is extended.
Smart Images
Figure CN222133985U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerical control machining tools, and more specifically to a five-edged polishing tool. Background Art
[0002] After turning, the roughness effect is poor, and there are uneven tool marks on the surface of the parts, which cannot meet customer needs. The extrusion burnishing process is a chipless process that uses the plastic deformation of the metal at room temperature to flatten the microscopic unevenness on the surface of the workpiece, thereby achieving the purpose of changing the surface structure, mechanical properties, shape and size.
[0003] Usually, when processing metal holes, a slightly smaller pre-hole is drilled with a drill bit, and then a reamer is used to expand the hole for finishing. This process can meet the requirements for holes with ordinary requirements, but it is more difficult for holes with high light requirements. Because during the reaming process, if there is a little chip accumulation on the front face of the reamer cutting edge, the hole wall will be roughened and scratched, thereby affecting the surface quality of the hole. This is also a disadvantage of ordinary reamers.
[0004] In view of the above situation, the utility model proposes a five-edged polishing cutter, which can reduce the cutting force and will not generate metal debris during the processing. Utility Model Content
[0005] In order to overcome the above defects of the prior art, the utility model provides a five-edged polishing knife to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a front end blade and a rear end handle, the front end blade is at one end of the rear end handle, the front end blade is a pentagonal column structure, the lengths of the sides of the pentagon to which the front end blade belongs are all set to be the same, the rear end handle is a cylindrical structure, the outer diameter of the front end blade is smaller than the outer diameter of the rear end handle, and the front end blade and the rear end handle are an integrated structure, and cylindrical knife bands are left at the five corners of the pentagon to which the front end blade belongs, and all are chamfered.
[0007] It can be seen that in the above structure, the technical structure of the extrusion burnishing tool is that there is no chip groove, only the back blade is made, and a five-blade design is adopted, so that the entire blade is similar to a pentagonal column, and a cylindrical blade band with a width of 0.1 is left on the five corners of the pentagon. The front section of the tool with a blade length of 0.2 is used as a guide at a 15-degree angle, so that it is completely in an extrusion state during processing, and no metal debris is generated. The 15-degree cone angle also makes the tool accurately positioned. The five-blade design reduces tool vibration, so that the processed hole wall meets the high-gloss requirements, and the hole size accuracy is good.
[0008] Preferably, the surfaces of the front blade and the rear handle are sprayed with a wear-resistant coating.
[0009] The provision of the wear-resistant coating enables the extrusion burnishing tool consisting of the front blade and the rear handle to have a certain wear resistance, thereby being able to better improve the service life of the extrusion burnishing tool.
[0010] Technical effects and advantages of the utility model:
[0011] The utility model adopts a pentagonal column structure at the blade of the extrusion burnishing knife, leaves a cylindrical blade band with a width of 0.1 at the five corners of the pentagon, and uses a 0.2 blade length at the front section of the tool as a guide at a 15-degree angle, so that the blade of the extrusion burnishing knife is always in an extrusion state during the processing, and no metal debris is generated during the processing. The setting of the 15-degree cone angle also enables the knife to be accurately positioned. The five-blade design blade can reduce the vibration of the tool, so that the processed hole wall meets the high-gloss requirement, and the size accuracy of the hole is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0013] Figure 2 It is a top view of the utility model.
[0014] The accompanying drawings are marked as follows: 1. front end blade; 2. rear end handle; 3. cylindrical blade band; 4. wear-resistant coating. DETAILED DESCRIPTION
[0015] 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.
[0016] As attached Figure 1-2 The five-blade extrusion burnishing knife shown includes a front blade 1 and a rear blade handle 2, wherein the front blade 1 is located at one end of the rear blade handle 2, the front blade 1 is a pentagonal column structure, and the rear blade handle 2 is a cylindrical structure. The outer diameter of the front blade 1 is smaller than the outer diameter of the rear blade handle 2, and the front blade 1 and the rear blade handle 2 are an integrated structure. Cylindrical blade bands 3 are left at the five corners of the pentagon to which the front blade 1 belongs, and all are chamfered. The surfaces of the front blade 1 and the rear blade handle 2 are sprayed with a wear-resistant coating 4, and the lengths of the sides of the pentagon to which the front blade 1 belongs are set to be the same.
[0017] Specifically, in the present invention, the five-edge extrusion burnishing knife comprises a front blade 1 and a rear handle 2. The five-edge extrusion burnishing knife of the present invention is different from a common reamer in that:
[0018] The extrusion burnishing cutter has no chip groove, only the back face, and adopts a five-edge design. The entire blade is similar to a pentagonal column, with a 0.1-wide cylindrical edge band left at the five corners of the pentagon. The front section of the tool has a 0.2-edge length as a guide angle of 15 degrees. This design has a large negative rake angle at the blade, no cutting force, and is completely in an extrusion state during processing, and no metal debris will be generated;
[0019] Moreover, the 15-degree cone angle also allows the tool to be positioned accurately, and the five-edge design reduces tool vibration, so that the processed hole wall meets the high-gloss requirements, and the hole size accuracy is good. The principle of this tool is to remove accumulated chips and squeeze out the surface.
[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A five-edged polishing knife, comprising a front blade (1) and a rear blade handle (2), wherein the front blade (1) is located at one end of the rear blade handle (2), and is characterized in that: The front blade (1) is a pentagonal column structure.
2. The five-edged polishing knife according to claim 1, characterized in that: The rear end handle (2) is a cylindrical structure, the outer diameter of the front end blade (1) is smaller than the outer diameter of the rear end handle (2), and the front end blade (1) and the rear end handle (2) are an integrated structure.
3. The five-edged polishing knife according to claim 1, characterized in that: Cylindrical blade strips (3) are retained at the five corners of the pentagon to which the front blade (1) belongs, and are all chamfered.
4. The five-edged polishing knife according to claim 1, characterized in that: The surfaces of the front blade (1) and the rear handle (2) are both sprayed with a wear-resistant coating (4).
5. The five-edged polishing knife according to claim 1, characterized in that: The lengths of the sides of the pentagon to which the front end blade (1) belongs are all set to be the same.