Scraping reamer with guide post
By designing a scraper reamer with a guide column and combining it with vertical and horizontal machining centers, the problems of poor surface roughness and deep hole concentricity during reaming are solved, and high-precision deep hole machining is achieved.
Patent Information
- Application Number
- CN202422219887.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing reaming process has quality problems such as poor surface roughness and dimensional accuracy, poor concentricity of the upper and lower ends of the deep hole, and a trumpet-shaped hole mouth.
A scraper reamer with a guide column is designed, which includes a tool holder, a first avoidance position, a second avoidance position and a secondary guide column. Through the coordinated use of these components, it is ensured that the reamer scrapes along the specified channel. Deep hole processing is carried out using mechanical processing equipment such as vertical and horizontal machining centers to achieve stable and uniform cutting.
The inner wall roughness of the deep hole is improved to Ra0.6-1.0, which ensures the concentricity of the upper and lower parts of the deep hole and solves the problems of the inner wall roughness and the concentricity of the deep hole.
Smart Images
Figure CN223338513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical industry, in particular to a scraper reamer with a guide column. Background Art
[0002] Reaming accuracy can reach IT9 to IT7 levels, with surface roughness typically reaching Ra1.6 to 0.8 μm. This is due to the special structure of the reamer, small machining allowance, and very low cutting speeds. In actual processing, common reaming quality issues include poor surface roughness and dimensional accuracy, poor concentricity at the top and bottom of deep holes, and a flared hole opening. To address these issues, we developed a scraper reamer with a guide post. Utility Model Content
[0003] The purpose of the utility model is to provide a scraper reamer with a guide post to solve the problems raised in the above background technology.
[0004] To achieve the above objectives, the present invention provides the following technical solutions:
[0005] A scraper reamer with a guide column includes a handle, the bottom of the handle is fixedly connected to a first avoidance position, the bottom of the first avoidance position is fixedly connected to a secondary guide column, the bottom of the secondary guide column is fixedly connected to a second avoidance position, and the bottom of the second avoidance position is fixedly connected to a scraping blade, the handle, the first avoidance position, the second avoidance position and the secondary guide column are all cylindrical in shape, the handle, the first avoidance position, the second avoidance position and the secondary guide column are all made of stainless steel, the length of the secondary guide column is twice the diameter of the secondary guide column, and the length of the first avoidance position is twice the diameter of the second avoidance position.
[0006] As a preferred solution of the present invention, the scraping edge is in the shape of a triangle, and the inner angle of the scraping edge is 70°.
[0007] As a preferred solution of the present invention, the thickness of the scraping blade is 0.2 mm, and the secondary guide column is arranged between the first avoidance position and the second avoidance position.
[0008] As a preferred solution of the present invention, the diameter of the tool handle is the same as the diameter of the secondary guide column, and the length of the first avoidance position is 1.5 times the length of the second avoidance position.
[0009] As a preferred solution of the present invention, the scraping blade is obliquely arranged on the side of the second avoidance position, and the material of the scraping blade is stainless steel.
[0010] As a preferred solution of the present invention, the second avoidance position and the secondary guide column have the same length, and the diameter of the secondary guide column is 0.98 mm wider than the diameter of the second avoidance position.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] 1. In the utility model, by providing the coordinated use of the tool handle, the first avoidance position, the second avoidance position, the secondary guide column, and the scraping edge, the secondary guide column allows the reamer to scrape along the specified channel, thereby ensuring the concentricity of the upper and lower ends of the deep hole. Since single-edge scraping and cutting are more stable and uniform, the problem of hole inner wall roughness is solved, and the inner wall roughness can reach Ra0.6-1.0. The secondary guide column can improve the guiding performance of the scraper reamer, allowing the reamer to ream along the specified channel, ensuring the concentricity of the upper and lower ends of the deep hole;
[0013] 2. In the utility model, by using this tool in conjunction with vertical machining center, horizontal machining center and other mechanical processing equipment to process deep holes, the concentricity of the upper and lower parts of the hole can be guaranteed, and the cutting is more stable, solving the problems of hole inner wall roughness and deep hole concentricity. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the overall perspective structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the characteristic structure of the processing product of this utility model;
[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.
[0018] In the figure: 1. Tool handle; 2. First avoidance position; 3. Second avoidance position; 4. Secondary guide column; 5. Scraping edge. DETAILED DESCRIPTION
[0019] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0020] For examples, see Figures 1-4 , the utility model provides a technical solution:
[0021] A scraper reamer with a guide column comprises a handle 1, the bottom of the handle 1 is fixedly connected to a first avoidance position 2, the bottom of the first avoidance position 2 is fixedly connected to a secondary guide column 4, the bottom of the secondary guide column 4 is fixedly connected to a second avoidance position 3, and the bottom of the second avoidance position 3 is fixedly connected to a scraping blade 5.
[0022] In this embodiment, Figure 1 and Figure 2 As shown, the tool handle 1, the first avoidance position 2, the second avoidance position 3 and the secondary guide column 4 are all cylindrical in shape, and the material of the tool handle 1, the first avoidance position 2, the second avoidance position 3 and the secondary guide column 4 are all stainless steel. For the deep hole to be processed, first use a drill to roughen the hole with a single-side allowance of 0.1-0.2mm, then use a milling cutter to mill the hole to a depth of 10-20mm, find the empty position, leave a single-side allowance of about 0.05mm, and then use a scraper reamer to feed at a low speed and small feed. The length of the secondary guide column 4 is twice the diameter of the secondary guide column 4, the length of the second avoidance position 2 is twice the diameter of the second avoidance position 2, and the scraping blade 5 is in the shape of a triangle, and the inner angle of the scraping blade 5 is 70°.
[0023] Among them, through the secondary guide column 4, the reamer is scraped along the specified channel to ensure the concentricity of the upper and lower ends of the deep hole. Since the single-edged scraping and cutting are more stable and uniform at the same time, the problem of the roughness of the inner wall of the hole is solved. The roughness of the inner wall can reach Ra0.6-1.0. The secondary guide column 4 can improve the guiding performance of the scraper reamer, so that the reamer is reamed along the specified channel to ensure the concentricity of the upper and lower holes of the deep hole.
[0024] In this embodiment, Figure 3 and Figure 4 As shown, the thickness of the scraping blade 5 is 0.2 mm, the secondary guide column 4 is arranged between the first avoidance position 2 and the second avoidance position 3, the diameter of the shank 1 is the same as the diameter of the secondary guide column 4, the length of the first avoidance position 2 is 1.5 times the length of the second avoidance position 3, the scraping blade 5 is obliquely arranged on the side of the second avoidance position 3, the scraping blade 5 is made of stainless steel, the length of the second avoidance position 3 and the secondary guide column 4 are the same, and the diameter of the secondary guide column 4 is 0.98 mm wider than the diameter of the second avoidance position 3.
[0025] Among them, by using this tool in conjunction with vertical machining center, horizontal machining center and other mechanical processing equipment to process deep holes, the concentricity of the upper and lower parts of the hole can be guaranteed, and the cutting is more stable, solving the problems of hole inner wall roughness and deep hole concentricity.
[0026] The working process of the utility model: when using the scraper reamer with guide column designed in this scheme, for the deep hole to be processed, first use a drill to roughen the hole with a single-side allowance of 0.1-0.2mm, then use a milling cutter to mill the hole to a depth of 10-20mm, find the empty position, leave a single-side allowance of about 0.05mm, and then use the scraper reamer to feed at a low speed and small feed. Through the secondary guide column 4, the reamer is scraped along the specified channel to ensure the concentricity of the upper and lower ends of the deep hole. Since the single-edge scraping and cutting are more stable and uniform at the same time, the problem of roughness of the inner wall of the hole is solved, and the roughness of the inner wall can reach Ra0.6-1.0, which improves the guiding performance of the scraper reamer and makes the reamer ream along the specified channel to ensure the concentricity of the upper and lower holes of the deep hole. When this tool is used in conjunction with mechanical processing equipment such as vertical machining centers and horizontal machining centers to process deep holes, the concentricity of the upper and lower parts of the hole can be ensured, and the cutting is more stable, which solves the problems of roughness of the inner wall of the hole and concentricity of the deep hole.
[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A scraper reamer with a guide post, comprising a handle (1), characterized in that: The bottom of the tool handle (1) is fixedly connected to a first avoidance position (2), the bottom of the first avoidance position (2) is fixedly connected to a secondary guide column (4), the bottom of the secondary guide column (4) is fixedly connected to a second avoidance position (3), and the bottom of the second avoidance position (3) is fixedly connected to a scraping blade (5). The tool handle (1), the first avoidance position (2), the second avoidance position (3) and the secondary guide column (4) are all cylindrical in shape. The tool handle (1), the first avoidance position (2), the second avoidance position (3) and the secondary guide column (4) are all made of stainless steel. The length of the secondary guide column (4) is twice the diameter of the secondary guide column (4), and the length of the first avoidance position (2) is twice the diameter of the second avoidance position (3).
2. The scraper reamer with a guide post according to claim 1, characterized in that: The scraping edge (5) is in the shape of a triangle, and the inner angle of the scraping edge (5) is 70°.
3. The scraper reamer with a guide post according to claim 1, characterized in that: The scraping edge (5) has a thickness of 0.2 mm, and the secondary guide column (4) is arranged between the first avoidance position (2) and the second avoidance position (3).
4. The scraper reamer with a guide post according to claim 1, characterized in that: The diameter of the tool handle (1) is the same as the diameter of the secondary guide column (4), and the length of the first avoidance position (2) is 1.5 times the length of the second avoidance position (3).
5. The scraper reamer with a guide post according to claim 1, characterized in that: The scraping blade (5) is obliquely arranged on the side of the second avoidance position (3), and the material of the scraping blade (5) is stainless steel.
6. The scraper reamer with a guide post according to claim 1, characterized in that: The second avoidance position (3) and the secondary guide column (4) have the same length, and the diameter of the secondary guide column (4) is 0.98 mm wider than the diameter of the second avoidance position (3).