Indexable reamer structure

Abstract

The indexable reamer structure comprises a base body connected to a driving end, the base body is provided with a circumferential abutting face in the circumferential direction, the base body is provided with a lateral abutting face in the radial direction, a limiting space is formed between the circumferential abutting face and the lateral abutting face, and a cutter plate is in threaded connection with the interior of the limiting space through a bolt. The limiting spaces and the cutter plates are arranged in a circumferential array mode with the axis of the base body as the circle center line, first abutting faces are symmetrically arranged on the cutter plates, second abutting faces are symmetrically arranged on the cutter plates, cutting edges are arranged at the connecting positions of the first abutting faces and the second abutting faces, and the cutting edges of the cutting edges face the tangential direction of the rotating direction of the base body. The peripheral abutting face is matched with the first abutting face in an abutting mode, the lateral abutting face is matched with the second abutting face in an abutting mode, the cutting board is fixed in the limiting space of the base body in a threaded connection mode, due to the design, the cutting board can be conveniently replaced or adjusted in a transposition mode, the flexibility of the cutting board is improved, and the service life of the cutting board is prolonged. And the use cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of cutting processing technology, and in particular to an indexable reamer structure. Background Art

[0002] The reamer structures currently available on the market are widely used in industrial production to remove thin layers of metal from the surface of processed holes to obtain precise hole diameter and geometric shape cutting. The reamer structure's shank and blade are integrated, and the reamer structure is directly connected to the drive source through the blade shaft. When the drive source is started, the blade of the blade rotates at high speed to cut the workpiece.

[0003] Whenever the blade is worn after a long period of work, the shank and blade need to be removed together and the blade needs to be changed. Since the blade is frequently worn during high-speed rotation, the cost of the industrial tool changing structure is very high, and there is room for improvement. Utility Model Content

[0004] In order to save costs, the present application provides an indexable reamer structure.

[0005] The present application provides an indexable reamer structure, which adopts the following technical solution:

[0006] A rotatable reamer structure includes a base connected to a driving end, the base being provided with a circumferential abutment surface along the circumference, the base being provided with lateral abutment surfaces along the radial direction, a limiting space being formed between the circumferential abutment surface and the lateral abutment surface, a knife plate being threadedly connected to the limiting space by a bolt, the limiting space and the knife plate being arranged in a circular array with the axis of the base as the center line, a first abutment surface being symmetrically provided on the knife plate along the circumference of the base, a second abutment surface being symmetrically provided on the knife plate along the radial direction of the base, a cutting edge being provided at the connection between the first abutment surface and the second abutment surface, the circumferential abutment surface forming an abutment fit with the first abutment surface, and the lateral abutment surface forming an abutment fit with the second abutment surface.

[0007] By adopting the above technical solution, the blade is fixed in the limited space of the base by means of a threaded connection. This design allows the blade to be easily replaced or adjusted. When the blade is worn or damaged, there is no need to replace the entire reamer. The blade can be processed using the new blade by simply flipping the blade over to expose another new blade between the first abutting surface and the second abutting surface. The circumferential abutting surface and the lateral abutting surface of the base are respectively abutted against the blade to fix the blade, thereby ensuring the precise positioning of the blade in the limited space. The blade can then be reused after being installed and fixed. This design improves the flexibility and service life of the blade and reduces the cost of use.

[0008] Preferably, the base is provided with an auxiliary abutting surface in the limiting space, and the top of the blade is provided with a third abutting surface, and the third abutting surface forms an abutting fit with the auxiliary abutting surface.

[0009] By adopting the above technical solution, the third abutting surface and the auxiliary abutting surface are used to form an abutting fit, which further ensures the stability and accuracy of the blade during the processing. This design helps to improve the processing accuracy and reduce vibration and deviation during the processing.

[0010] Preferably, edges are provided between adjacent blades on the blade, a first avoidance groove for avoiding the edges between adjacent blades of the blade is provided at the connection between the circumferential abutment surface and the auxiliary abutment surface, and a second avoidance groove for avoiding the blade is provided at the connection between the circumferential abutment surface and the lateral abutment surface.

[0011] By adopting the above technical solution, the first avoidance groove is used to provide a certain avoidance space for the edges between adjacent blades of the cutting plate; the second avoidance groove is used to provide a certain avoidance space for the cutting edge located in the second avoidance groove, which helps to reduce the risk of damage to the cutting plate caused by stress concentration during processing.

[0012] Preferably, corners are provided between adjacent edges on the blade, and a third avoidance groove for avoiding the corners of the blade is provided at the connection between the auxiliary abutment surface and the lateral abutment surface, and the first avoidance groove and the second avoidance groove are respectively connected to the third avoidance groove.

[0013] By adopting the above technical solution and utilizing the setting of the third avoidance groove, and the first avoidance groove and the second avoidance groove are respectively connected to the third avoidance groove, a certain avoidance space is provided for the edges and corners of the cutting plate located in the third avoidance groove, thereby further reducing the risk of damage to the cutting plate due to stress concentration during processing, and improving the overall strength and stability of the cutting plate.

[0014] Preferably, the opening of the third avoidance groove is arranged in an arc shape.

[0015] By adopting the above technical solution and utilizing the arc-shaped opening of the third avoidance groove, it is convenient for the staff to put their hands into the third avoidance groove, thereby realizing the taking and placing of the blade.

[0016] Preferably, a first chamfer is provided on one end of the circumferential abutting surface away from the auxiliary abutting surface and on one end of the circumferential abutting surface away from the lateral abutting surface.

[0017] By adopting the above technical solution and utilizing the setting of the first chamfer, the direct contact area between the substrate and the blade is reduced during the processing, thereby reducing the wear on the blade. At the same time, the first chamfer can also provide a certain guiding effect during the assembly process, making it easier and more accurate for the blade to enter the limited space.

[0018] Preferably, a chip removal groove is provided on a side of the base body close to the cutting edge of the cutting plate.

[0019] By adopting the above technical solution, the chip removal groove is arranged on the side of the blade close to the blade, which helps to timely discharge the chips generated during the processing and keep the cutting area clean.

[0020] Preferably, a flow channel is provided inside the base body, and a cooling hole is provided in the base body in the chip removal groove and is arranged toward the blade, and the flow channel is communicated with the cooling hole.

[0021] By adopting the above technical solution, the flow channel and cooling holes set inside the base are utilized, and the coolant in the flow channel is sprayed out from the cooling holes to provide a cooling effect for the blade and the workpiece during the processing, thereby reducing the temperature of the blade and the workpiece, extending the service life of the blade, and improving the processing quality.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The blade is fixed in the limited space of the base body by means of a threaded connection. This design allows the blade to be easily replaced or adjusted. When the blade is worn or damaged, there is no need to replace the entire reamer. The blade can be flipped over to expose another new blade between the first abutment surface and the second abutment surface, and the circumferential abutment surface and the lateral abutment surface of the base body are respectively abutted against the blade to fix the blade, thereby ensuring the precise positioning of the blade in the limited space. The blade can then be reused after being installed and fixed. This design improves the flexibility and service life of the blade and reduces the cost of use.

[0024] 2. The first, second, and third escape grooves provide a stable escape space for the blade. This design effectively disperses the stress on the substrate during machining. When the blade needs to be replaced or maintained, this design allows operators to more easily access and operate related components, reducing maintenance difficulty and cost.

[0025] 3. By utilizing the settings of the chip groove and flow channel, the chips generated during the machining process of the workpiece can be quickly and smoothly discharged along the chip groove under the flushing of the coolant, effectively avoiding the accumulation of chips in the cutting area and causing the tool to be blocked, maintaining the cleanliness of the cutting area and the sharpness of the blade. At the same time, the coolant provides a continuous cooling effect for the blade during the machining process, extending the service life of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric diagram mainly showing the overall structure in the embodiment of the present application;

[0027] Figure 2 This is a partial exploded view of the overall structure of the embodiment of the present application;

[0028] Figure 3 It is a cross-sectional view mainly showing the flow channel in the embodiment of the present application.

[0029] Figure markings: 1. base; 11. flow channel; 111; branch port; 112. first blocking member; 113. second blocking member; 114. first flow channel; 115. second flow channel; 12. liquid injection port; 2. cutting unit; 21. limiting space; 211. circumferential abutment surface; 2111. first chamfer; 212. lateral abutment surface; 213. auxiliary abutment surface; 214. first avoidance groove; 215. second avoidance groove; 216. third avoidance groove; 22. chip removal groove; 221. cooling hole; 3. blade; 31. first abutment surface; 32. second abutment surface; 33. third abutment surface; 34. cutting edge; 35. second chamfer. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0031] The embodiment of the present application discloses an indexable reamer structure.

[0032] Reference Figure 1 A removable reamer structure includes a base 1 connected to a driving end, the base 1 is cylindrical, and a cutting unit 2 is provided on the circumferential surface of the base 1 away from the driving source. The cutting units 2 are distributed in a circular array with the axis of the base 1 as the center line. In this embodiment, six cutting units 2 are provided.

[0033] Since the structures and connection methods of the six cutting units 2 are the same, one of the cutting units 2 is taken as an example for explanation.

[0034] Reference Figure 1 and Figure 2 The cutting unit 2 includes a limited space 21 set on the base 1, and the base 1 is located in the limited space 21 and is connected to a blade 3 by a bolt thread, so that the blade 3 is fixed in the limited space 21 of the base 1. This design makes it easy to replace or adjust the blade 3; the blade 3 is arranged in a rectangular block shape, and a first abutment surface 31 and a second abutment surface 32 are symmetrically arranged on the blade 3, that is, two symmetrical first abutment surfaces 31 and two symmetrical second abutment surfaces 32 are respectively the four side surfaces of the blade 3, and the two symmetrical end surfaces on the blade 3 are set as third abutment surfaces 33.

[0035] Reference Figure 2The base 1 is located in the limiting space 21 and is provided with a circumferential abutment surface 211 in the tangent direction of its rotation direction. The base 1 is located in the limiting space 21 and is provided with a lateral abutment surface 212. The lateral abutment surface 212 is arranged perpendicular to the circumferential abutment surface 211. The circumferential abutment surface 211 forms an abutment fit with the first abutment surface 31, and the lateral abutment surface 212 forms an abutment fit with the second abutment surface 32, thereby ensuring the precise positioning of the blade 3 on the base 1. This design helps to improve machining accuracy and reduce vibration and deviation during machining.

[0036] Reference Figure 2 A blade 34 is provided at the connection between the first abutting surface 31 and the second abutting surface 32, that is, four long blades 34 are formed. The cutting edge of the blade 34 on the blade plate 3 away from the circumferential abutting surface 211 and the lateral abutting surface 212 is tangential to the rotation direction of the base 1. When the blade 34 is worn or damaged, there is no need to replace the entire reamer. It is only necessary to flip the blade plate 3 to expose another new blade 34 between the first abutting surface 31 and the second abutting surface 32. The blade plate 3 can use the new blade 34 for processing. This design improves the flexibility and service life of the blade plate 3 and reduces the cost of use.

[0037] Reference Figure 2 The base 1 is also provided with an auxiliary abutment surface 213 at the top of the limiting space 21. The third abutment surface 33 forms an abutment fit with the auxiliary abutment surface 213, further ensuring the stability and accuracy of the blade 3 during the processing. This design helps to improve the processing accuracy and reduce vibration and deviation during the processing.

[0038] Reference Figure 2 A first chamfer 2111 is provided on one end of the circumferential abutting surface 211 away from the auxiliary abutting surface 213 and on the other end of the circumferential abutting surface 211 away from the lateral abutting surface 212. The setting of the first chamfer 2111 reduces the direct contact area between the base 1 and the blade 3 during the processing, thereby reducing the wear on the blade 3. At the same time, the first chamfer 2111 can also provide a certain guiding effect during the assembly process, so that the blade 3 can enter the limited space 21 more easily and accurately.

[0039] Reference Figure 2The connection between the circumferential abutment surface 211 and the auxiliary abutment surface 213 is beveled to provide a first avoidance groove 214, which provides a certain avoidance space for the edges between the adjacent blades 34 of the blade 3. The connection between the circumferential abutment surface 211 and the lateral abutment surface 212 is beveled to provide a second avoidance groove 215, which provides a certain avoidance space for the blade 34 located in the second avoidance groove 215. The connection between the auxiliary abutment surface 213 and the lateral abutment surface 212 is provided with a third avoidance groove 216. The third avoidance groove 216 is conical, and the opening of the third avoidance groove 216 is arc-shaped, which is convenient for The staff extends their hand into the third avoidance groove 216 to take and place the knife plate 3. The first avoidance groove 214 and the second avoidance groove 215 are respectively connected to the third avoidance groove 216. The third avoidance groove 216 is arranged to provide a certain avoidance space for the corners of the knife plate 3 located in the third avoidance groove 216, thereby reducing the risk of damage to the knife plate 3 due to stress concentration during processing, improving the overall strength and stability of the knife plate 3, and at the same time making it easier for the operator to approach and operate related components when replacing or maintaining the knife plate 3, thereby reducing the difficulty and cost of maintenance.

[0040] Reference Figure 2 A second chamfer 35 is provided between the first abutting surface 31 and the third abutting surface 33. During the machining process, the blade 3 will be subjected to a reaction force from the workpiece. The setting of the second chamfer 35 can reduce stress concentration, thereby enhancing the strength of the blade 3.

[0041] Reference Figure 1 and Figure 2 The cutting unit 2 includes a chip groove 22 opened on the base 1, and the chip groove 22 is arranged near the side of the blade 34 of the blade 3. The chip groove 22 is opened from the end of the base 1 away from the driving source toward the end of the driving source, and the depth of the chip groove 22 gradually decreases in the direction toward the driving source. The chip groove 22 is arranged near the side of the limit space 21, which effectively guides the chips from the cutting area into the chip groove 22 for discharge, thereby reducing the situation of the tool being blocked due to chips blocking the blade 34 during processing.

[0042] Reference Figure 1 and Figure 3The cutting unit 2 is located in the chip groove 22 and has a cooling hole 221. The cooling hole 221 is arranged toward the blade 3. A liquid inlet 12 is arranged inside the base 1, and a flow channel 11 connected to the liquid inlet 12 is arranged in an array corresponding to the number of cutting units 2 inside the base 1. Any flow channel 11 includes a branch port 111, a first blocking member 112 and a second blocking member 113. Any flow channel 11 is located at the branch port 111 and branches into a first flow channel 114 and a second flow channel 115. Any first flow channel 114 is arranged along the radial direction of the base 1 and is open. The first blocking member 112 is arranged in the first flow channel 1 14 is away from one end of the liquid inlet 12 and seals the opening of the first flow channel 114, any second flow channel 115 is arranged along the axial direction of the substrate 1 and is open, the second blocking member 113 is arranged at one end of the second flow channel 115 away from the liquid inlet 12 and seals the opening of the second flow channel 115, through the arrangement of the first flow channel 114 and the second flow channel 115, it is convenient for the staff to process the flow channel 11 as a whole, and through the arrangement of the first blocking member 112 and the second blocking member 113, the coolant injected from the liquid inlet 12 will not overflow from the opening at the end of the first flow channel 114 or the opening at the end of the second flow channel 115.

[0043] Reference Figure 2 and Figure 3 Any second flow channel 115 is connected to the corresponding cooling hole 221, and the coolant in the flow channel 11 is sprayed out from the cooling hole 221 to provide a cooling effect for the blade 34 and the workpiece during the processing, thereby extending the service life of the blade 34 and improving the processing quality. At the same time, the chips generated by the workpiece during the processing can be quickly and smoothly discharged along the chip groove 22 under the flushing of the coolant, effectively avoiding the accumulation of chips in the cutting area, maintaining the cleanliness of the cutting area and the sharpness of the blade 3.

[0044] The implementation principle of the embodiment of the present application is as follows: during actual operation, first select a suitable blade 34 on the blade 3 and expose it to the outside of the limited space 21, and at the same time, make the working surface of the blade 3 abut the circumferential abutment surface 211, the lateral abutment surface 212 and the auxiliary abutment surface 213 in the limited space 21 respectively, and then thread the blade 3 into the limited space 21 through bolts. After ensuring that all components are installed correctly and tightened reliably, the drive source can be started to drive the base 1 to rotate at high speed, thereby driving the blade 34 on the blade 3 to cut the workpiece. At the same time, the coolant in the flow channel 11 is sprayed out from the cooling hole 221, providing a cooling effect for the blade 34 and the workpiece during the processing, thereby reducing the temperature of the blade 34 and the workpiece.

[0045] When the blade 34 is worn or damaged after working for a period of time, first unscrew the bolts to remove the blade 3, and then turn the blade 3 over to expose the new blade 34 on the other edge for use, and then repeat the above operation process to process the work.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An indexable reamer structure, characterized in that: The invention comprises a base (1) connected to a driving end, wherein the base (1) is provided with a circumferential abutment surface (211) along the circumferential direction, and the base (1) is provided with a lateral abutment surface (212) along the radial direction, and a limited space (21) is formed between the circumferential abutment surface (211) and the lateral abutment surface (212), and a blade (3) is connected to the limited space (21) by a bolt thread, and the limited space (21) and the blade (3) are arranged in a circumferential array with the axis of the base (1) as the center line. A first abutting surface (31) is symmetrically provided on the blade (3), and a second abutting surface (32) is symmetrically provided on the blade (3). A blade (34) is provided at the connection between the first abutting surface (31) and the second abutting surface (32), and the cutting edge of the blade (34) is tangential to the rotation direction of the base (1). The circumferential abutting surface (211) forms an abutting fit with the first abutting surface (31), and the lateral abutting surface (212) forms an abutting fit with the second abutting surface (32).

2. The indexable reamer structure according to claim 1, characterized in that: The base (1) is provided with an auxiliary abutting surface (213) in the limiting space (21), and the top of the knife plate (3) is provided with a third abutting surface (33), and the third abutting surface (33) forms an abutting fit with the auxiliary abutting surface (213).

3. The indexable reamer structure according to claim 1, characterized in that: Edges are provided between adjacent blades (34) on the blade plate (3); a first avoidance groove (214) for avoiding the edges between adjacent blades (34) of the blade plate (3) is provided at the connection between the circumferential abutment surface (211) and the auxiliary abutment surface (213); and a second avoidance groove (215) for avoiding the blades (34) is provided at the connection between the circumferential abutment surface (211) and the lateral abutment surface (212).

4. The indexable reamer structure according to claim 3, characterized in that: Corners are provided between adjacent edges on the blade (3); a third avoidance groove (216) for avoiding the corners of the blade (3) is provided at the connection between the auxiliary abutment surface (213) and the lateral abutment surface (212); the first avoidance groove (214) and the second avoidance groove (215) are respectively connected to the third avoidance groove (216).

5. The indexable reamer structure according to claim 1, characterized in that: The opening of the third avoidance groove (216) is arranged in an arc shape.

6. The indexable reamer structure according to claim 1, characterized in that: An end of the circumferential abutting surface (211) away from the auxiliary abutting surface (213) and an end of the circumferential abutting surface (211) away from the lateral abutting surface (212) are provided with a first chamfer (2111).

7. The indexable reamer structure according to claim 1, characterized in that: A chip removal groove (22) is provided on one side of the base body (1) close to the cutting edge (34) of the cutting plate (3).

8. The indexable reamer structure according to claim 1, characterized in that: A flow channel (11) is provided inside the base body (1), and a cooling hole (221) is provided in the base body (1) in the chip removal groove (22) and is arranged toward the blade (3), and the flow channel (11) is communicated with the cooling hole (221).

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