Large unequal-division spiral reamer

Abstract

The utility model discloses a large unequally-divided spiral reamer which comprises a spiral reamer handle and a spiral reamer body arranged on the side face of the tail end of the spiral reamer handle. A cutting taper angle is arranged at the tail end of the spiral reamer body, the indexing of the main chip flutes is sequentially 70 degrees and 120 degrees alternately, the back width ratio of the spiral reamer body is 150 degrees and 120 degrees alternately, the cutting taper angle is 0.5 * 30 degrees, the spiral reamer body is slotted through unequal indexing, the angle, the back width and the cutting edge of each edge are different, and the angle, the back width and the cutting edge of each edge are different. According to the improved spiral reamer, grooving is conducted through unequal indexing, the angles, the back widths and the cutting edges of all the edges are different, and therefore the contact frequency and the contact time of all the cutting edges and the surface of a workpiece are different in the machining process, and the vibration suppression effect is achieved. Through the improvement, part of components can be directly replaced when the spiral reamer is damaged.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to a large unequal division spiral reamer. Background Technology

[0002] In high-precision manufacturing fields such as automobile engine manufacturing and aero-engine manufacturing, the requirements for hole machining accuracy and surface quality are extremely high. Spiral reamers can effectively meet these requirements and are therefore widely used in these industries.

[0003] The development of spiral reamers has benefited from continuous advancements in materials science, manufacturing processes, and tool design. Modern spiral reamers are typically manufactured using high-performance materials such as cemented carbide, combined with advanced manufacturing processes and tool coating technologies, further improving the tool's wear resistance and cutting efficiency.

[0004] A spiral reamer is a rotary cutting tool used in metalworking, primarily for finishing drilled holes to improve dimensional accuracy and surface finish. Its helical cutting edge allows for efficient chip removal during cutting, reducing chip clogging and tool wear.

[0005] However, traditional spiral reamers have the same cutting frequency for each cutting edge, which can easily cause resonance.

[0006] This utility model addresses the above-mentioned problems by providing an improvement on a large unequal-division spiral reamer. Utility Model Content

[0007] The purpose of this invention is to provide a large unequal-division spiral reamer to solve the problem mentioned in the background art that traditional spiral reamers have the same cutting frequency for each cutting edge, which easily leads to resonance.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a large unequal division spiral reamer, comprising a spiral reamer handle and a spiral reamer body disposed at the end side of the spiral reamer handle;

[0009] The spiral reamer body has a main chip groove on its side and a cutting cone at its end. The main chip groove has alternating divisions of 70 degrees and 110 degrees. The back width ratio of the spiral reamer body is alternating between 1.05 and 1. The cutting cone is 0.5 x 30 degrees. The spiral reamer body is slotted with unequal divisions, and the angle, back width, and cutting edge of each edge are different.

[0010] Preferably, a plug-in connecting inner post is provided at the left end of the spiral reamer body, and the plug-in connecting inner post and the spiral reamer body are an integral structure.

[0011] Preferably, a connecting spring is provided in the inner column of the plug-in connection, and a sloped snap-fit ​​post is provided at the end of the connecting spring.

[0012] Preferably, a push button is provided on the upper side of the slope snap-fit ​​post, and a through groove is provided on the outer side of the push button.

[0013] Preferably, a limiting moving post is provided on the side of the press button, and the limiting moving post and the press button are an integral structure.

[0014] Preferably, a limiting moving groove is provided at the outer position of the limiting moving column, and the length of the limiting moving groove is the moving range of the limiting moving column.

[0015] Preferably, a heat-insulating sleeve ring is provided on the outer side of the spiral reamer body. The heat-insulating sleeve ring is composed of two parts and has a through slot.

[0016] Preferably, a snap-fit ​​metal ball is provided at the middle position of the through slot, and a connecting spring is provided at the bottom position of the snap-fit ​​metal ball.

[0017] Compared with the prior art, this utility model provides a large unequal division spiral reamer, which has the following characteristics:

[0018] Beneficial effects:

[0019] 1. In a large unequal-division spiral reamer, a main chip groove is provided on the side of the spiral reamer body, and a cutting cone is provided at the end of the spiral reamer body. The division of the main chip groove alternates between 70 degrees and 110 degrees. The back width ratio of the spiral reamer body alternates between 1.05 and 1. The cutting cone angle is 0.5 x 30 degrees. The spiral reamer body is grooved with unequal division, and the angle, back width, and cutting edge of each edge are different. After the improvement of this utility model, the unequal division of the groove results in different angles, back widths, and cutting edges of each edge, so that the frequency and contact time of each cutting edge with the workpiece surface are different during machining, thereby achieving the effect of vibration suppression.

[0020] 2. In the large unequal-division spiral reamer, a plug-in connecting inner post is provided at the left end of the spiral reamer body. The plug-in connecting inner post and the spiral reamer body are an integral structure. A connecting spring is provided in the plug-in connecting inner post. A sloped snap-fit ​​post is provided at the end of the connecting spring. A press button is provided on the upper side of the sloped snap-fit ​​post. A through groove is provided on the outer side of the press button. After this improvement, the spiral reamer body can be installed with the spiral reamer handle by plug-in snap-fit. This improvement allows for the direct replacement of some parts when the spiral reamer is damaged, instead of discarding the whole thing, thus effectively improving the practicality of the spiral reamer.

[0021] 3. In the large unequal-division spiral reamer, a heat-insulating sleeve ring is provided on the outer side of the spiral reamer body. The heat-insulating sleeve ring is composed of two parts. The heat-insulating sleeve ring is provided with a through slot. A small metal ball is provided in the middle of the through slot. A connecting spring is provided at the bottom of the small metal ball. The heat-insulating sleeve ring is made of ceramic fiber material. The heat-insulating sleeve ring is composed of alumina, silicon oxide, etc., and has the characteristics of light weight, high temperature resistance, low thermal conductivity, and good chemical stability. Its setting allows the user to replace the spiral reamer in time to enter the next work, reducing the waiting time for the spiral reamer to cool down naturally, thereby effectively improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the large unequal division spiral reamer of this utility model.

[0023] Figure 2 This is a front view structural diagram of the large unequal division spiral reamer of this utility model.

[0024] Figure 3 This is a schematic diagram of the right side of the structure of the large unequal division spiral reamer of this utility model.

[0025] Figure 4 This is an enlarged structural diagram of the large unequal division spiral reamer at position A of this utility model.

[0026] Figure 5 This is a partial cross-sectional structural diagram of the heat insulation sleeve junction of the large unequal-division spiral reamer of this utility model.

[0027] In the diagram: 1. Spiral reamer handle; 2. Spiral reamer body; 3. Cutting cone angle; 4. Main chip groove; 5. Insulating sleeve ring; 6. Snap-fit ​​metal ball; 7. Press button; 8. Through slot; 9. Limiting movement groove; 10. Limiting movement post; 11. Sloping snap-fit ​​post; 12. Connecting spring one; 13. Insertion connecting inner post; 14. Connecting spring two. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figure 1-5 As shown, a large unequal division helical reamer includes a helical reamer handle 1 and a helical reamer body 2 disposed at the end side of the helical reamer handle 1;

[0030] The spiral reamer body 2 has a main chip groove 4 on its side and a cutting cone 3 at its end. The main chip groove 4 has alternating divisions of 70 degrees and 110 degrees. The back width ratio of the spiral reamer body 2 alternates between 1.05 and 1. The cutting cone 3 is 0.5 x 30 degrees. The spiral reamer body 2 is slotted with unequal divisions, and the angle, back width, and cutting edge of each edge are different. With the improvement of this utility model, the unequal division of the slotting results in different angles, back widths, and cutting edges of each edge, thus making the frequency and contact time of each cutting edge with the workpiece surface different during machining, thereby achieving the effect of vibration suppression.

[0031] like Figure 2 and Figure 4 As shown, a plug-in connecting inner post 13 is provided at the left end of the spiral reamer body 2. The plug-in connecting inner post 13 and the spiral reamer body 2 are an integral structure. A connecting spring 12 is provided in the plug-in connecting inner post 13. A sloped snap-fit ​​post 11 is provided at the end of the connecting spring 12. A press button 7 is provided on the upper side of the sloped snap-fit ​​post 11. A through groove is provided on the outer side of the press button 7. After the improvement of this utility model, the spiral reamer body 2 can be installed with the spiral reamer handle 1 by plug-in snap-fit. This improvement allows some parts to be replaced directly when the spiral reamer is damaged, instead of discarding the whole thing, thereby effectively improving the practicality of the spiral reamer.

[0032] like Figure 4 As shown, a limiting moving post 10 is provided on the side of the press button 7. The limiting moving post 10 and the press button 7 are an integral structure. A limiting moving groove 9 is provided on the outer side of the limiting moving post 10. The length of the limiting moving groove 9 is the moving stroke of the limiting moving post 10. The setting of the limiting moving post 10 and the limiting moving groove 9 can restrict the movement of the press button 7 and prevent it from falling off and being lost.

[0033] like Figure 5 As shown, a heat-insulating sleeve ring 5 is provided on the outer side of the spiral reamer body 2. The heat-insulating sleeve ring 5 is composed of two parts. A through slot 8 is provided on the heat-insulating sleeve ring 5. A snap-fit ​​metal ball 6 is provided in the middle of the through slot 8. A connecting spring 14 is provided at the bottom of the snap-fit ​​metal ball 6. The heat-insulating sleeve ring 5 is made of ceramic fiber material. The heat-insulating sleeve ring 5 is composed of alumina, silicon oxide, etc., and has the characteristics of light weight, high temperature resistance, low thermal conductivity, and good chemical stability. Its setting allows the user to replace the spiral reamer in time and enter the next work, reducing the waiting time for the spiral reamer to cool down naturally, thereby effectively improving work efficiency.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large unequal division helical reamer, comprising a helical reamer handle (1) and a helical reamer body (2) disposed at the end side of the helical reamer handle (1); Its features are: The spiral reamer body (2) is provided with a main chip groove (4) on its side and a cutting cone angle (3) at its end. The main chip groove (4) is divided into alternating 70 degrees and 110 degrees. The back width ratio of the spiral reamer body (2) is alternating between 1.05 and 1. The cutting cone angle (3) is 0.5 * 30 degrees. The spiral reamer body (2) is grooved with unequal divisions.

2. The large unequal division spiral reamer according to claim 1, characterized in that: The left end of the spiral reamer body (2) is provided with a plug-in connecting inner post (13), and the plug-in connecting inner post (13) and the spiral reamer body (2) are an integral structure.

3. A large unequal division spiral reamer according to claim 2, characterized in that: The inner column (13) of the plug-in connection is provided with a connecting spring (12), and a slope snap-fit ​​column (11) is provided at the end of the connecting spring (12).

4. A large unequal division spiral reamer according to claim 3, characterized in that: A push button (7) is provided on the upper side of the slope snap-fit ​​post (11), and a through groove is provided on the outer side of the push button (7).

5. A large unequal division spiral reamer according to claim 4, characterized in that: A limiting moving post (10) is provided on the side of the press button (7), and the limiting moving post (10) and the press button (7) are an integral structure.

6. A large unequal division spiral reamer according to claim 5, characterized in that: A limiting moving groove (9) is provided at the outer position of the limiting moving column (10), and the length of the limiting moving groove (9) is the moving stroke of the limiting moving column (10).

7. A large unequal division spiral reamer according to claim 1, characterized in that: A heat-insulating sleeve ring (5) is provided on the outer side of the spiral reamer body (2). The heat-insulating sleeve ring (5) is composed of two parts and has a through slot (8).

8. A large unequal division helical reamer according to claim 7, characterized in that: A snap-fit ​​metal ball (6) is provided at the middle position of the through slot (8), and a connecting spring (14) is provided at the bottom position of the snap-fit ​​metal ball (6).

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