Reamer with reamer blade convenient to replace

Abstract

The utility model provides a reamer with reamer blades convenient to replace, and belongs to the technical field of cutters. The reamer with the reamer blade convenient to replace comprises a reamer holder, a sliding groove is formed in the periphery of the outer circle of the reamer holder, a blade is connected into the sliding groove in a sliding mode, a positioning nut and a locking nut are connected to the two ends of the reamer holder in a threaded mode, and the positioning nut and the locking nut are attached to the conical surfaces of the two ends of the blade. In the application, when the blades are replaced, all the blades can be replaced only by unscrewing the pressing ring and the locking nut, so that the maintenance efficiency is greatly improved, the number of parts is reduced compared with the prior art, and the reliability and the operability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cutting tools, and in particular to a reamer with a reamer blade that is easy to replace. Background Art

[0002] A reamer is a rotary tool with one or more teeth used to remove a thin layer of metal from the surface of a machined hole. A reamer is a rotary finishing tool with a straight or spiral edge used for expanding or repairing holes.

[0003] In this regard, China's patent application number is CN202021742392.6, which discloses a reamer mechanism that is convenient for replacing reamer blades. This scheme allows the insertion strip to cooperate with the cutting blade to be inserted into the insertion slot of the C-shaped seat, and the fixed head is inserted into the plug-in hole at the same time. Then, the insertion strip and the cutting blade are tilted to a suitable angle, and finally the manual head is turned to connect the fixing screw with the fixing head to fix the insertion strip and the cutting blade. After the initial fixation, the manual disk is turned again to drive the threaded column and the protective head to rotate and descend, so that the insertion strip and the cutting blade can be fixed, thereby completing the adjustment and fixed use.

[0004] However, in the process of implementing the technical solution in the embodiments of the present application, the inventor of the present application found that the above technology has at least the following technical problems:

[0005] The above solution has many parts and components, and the operation of replacing the blade is complicated and inconvenient. Utility Model Content

[0006] In order to make up for the above shortcomings, the present application provides a reamer that is easy to replace the reamer blade, aiming to improve the problems mentioned in the above background technology.

[0007] An embodiment of the present application provides a reamer that is easy to replace a reamer blade, including a blade seat, a slide groove is opened around the outer circle of the blade seat, a blade is slidably connected in the slide groove, and positioning nuts and locking nuts are screwed at both ends of the blade seat, and the positioning nuts and the locking nuts are in contact with the conical surfaces at both ends of the blade.

[0008] In a specific embodiment, the slide groove on the blade seat is wedge-shapedly adapted to the blade.

[0009] In the above implementation process, the blade is inserted from one end of the slide slot, so that the blade holder can form a good supporting and fixing effect on the blade, and the blade is not easy to loosen from the slide slot.

[0010] In a specific embodiment, the bottom wall of the chute is inclined.

[0011] In the above implementation process, when the blade slides axially on the slide groove, the outer diameter of the blade will change, thereby achieving the effect of adjusting the cutting radius.

[0012] In a specific embodiment, a ridge rod is screwed onto the rear end of the tool holder.

[0013] In the above implementation process, the hexagonal edge rod is used to be installed on the external rotating mechanism.

[0014] In a specific embodiment, a positioning ring is fixedly connected to the front end of the edge rod.

[0015] In the above implementation process, the positioning ring is used for positioning during installation. The rib rod and the positioning ring are integrally formed, and a threaded column is provided at the front end, which is screwed into the tool seat. The positioning ring is close to the rear end of the tool seat for easy disassembly and maintenance. It should be noted that it is necessary to pay attention to the direction of the blade edge and the direction of the rib rod thread, that is, when cutting, the resistance encountered by the blade makes the rib rod and the tool seat screwed more tightly.

[0016] In a specific embodiment, a gasket is provided between the positioning ring and the positioning nut.

[0017] In the above implementation process, the gasket is used to locate the position of the locating nut. Gaskets of appropriate number and thickness are selected and placed between the locating ring and the locating nut, and the locating nut is tightened so that the rear end position of the blade is fixed. After opening the locking nut to replace the blade, the locating nut will not loosen and the positioning position will not change.

[0018] In a specific embodiment, no cutting edges are provided at both ends of the blade.

[0019] In the above implementation process, since the positioning nut and the locking nut need to move axially, the slide groove cannot cover the entire length of the blade. Therefore, the blade is only arranged in the middle area, so that the blade part can be fully supported by the blade seat even if it moves axially, thereby improving the strength of the blade.

[0020] In a specific implementation manner, a pressure ring is threadedly connected to the front end of the tool holder, and the pressure ring is tightened to the locking nut.

[0021] In the above implementation process, the pressure ring is used to tighten the locking nut, thereby preventing the locking nut from loosening.

[0022] Compared with the prior art, the beneficial effect of the present application is that when replacing the blades, all the blades can be replaced by only unscrewing the pressure ring and the locking nut, which greatly improves the maintenance efficiency, and has fewer parts than the prior art, thereby improving reliability and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of a reamer that facilitates replacement of reamer blades provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the connection relationship between the blade, the locking nut and the positioning nut provided in the embodiment of the present application;

[0026] Figure 3 An exploded schematic diagram of a reamer for facilitating replacement of reamer blades provided in an embodiment of the present application.

[0027] In the figure: 10-blade holder; 20-blade; 30-positioning nut; 40-locking nut; 50-edge rod; 60-positioning ring; 70-gasket; 80-pressure ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0029] See also Figure 1-Figure 3 The present application provides a reamer that is convenient for replacing reamer blades, including a blade holder 10, a slide groove is provided on the outer circumference of the blade holder 10, a blade 20 is slidably connected in the slide groove, and positioning nuts 30 and locking nuts 40 are screwed at both ends of the blade holder 10, and the positioning nuts 30 and locking nuts 40 fit the conical surfaces at both ends of the blade 20. When replacing the blade 20, it is only necessary to unscrew the pressure ring 80 and the locking nut 40 to replace all the blades 20, which greatly improves the maintenance efficiency, has fewer parts than the prior art, and improves reliability and operability.

[0030] See also Figure 1-Figure 3 The slide groove on the knife seat 10 is wedge-shapedly adapted to the blade 20. The blade 20 is inserted from one end of the slide groove, so that the knife seat 10 can form a good supporting and fixing effect on the blade 20, and the blade 20 is not easy to loosen from the slide groove.

[0031] See also Figure 1-Figure 3 The bottom wall of the chute is inclined. When the blade 20 slides axially on the chute, the outer diameter of the blade will change, thereby achieving the effect of adjusting the cutting radius.

[0032] See also Figure 1-Figure 3 The rear end of the tool holder 10 is screwed with a prism 50. The hexagonal prism 50 is used to be installed on an external rotating mechanism.

[0033] See also Figure 1-Figure 3 , the front end of the rib rod 50 is fixedly connected with a positioning ring 60. The positioning ring 60 is used for positioning during installation. The rib rod 50 and the positioning ring 60 are integrally formed, and a threaded column is provided at the front end, which is screwed into the tool holder 10. The positioning ring 60 is close to the rear end of the tool holder 10, which is convenient for disassembly and maintenance. It should be noted that it is necessary to pay attention to the direction of the cutting edge of the blade 20 and the thread direction of the rib rod 50. That is, when cutting, the resistance encountered by the blade 20 makes the rib rod 50 and the tool holder 10 screwed more tightly.

[0034] See also Figure 1-Figure 3 A gasket 70 is provided between the positioning ring 60 and the positioning nut 30. The gasket 70 is used to locate the position of the positioning nut 30. A suitable number and thickness of gaskets 70 are selected to be placed between the positioning ring 60 and the positioning nut 30, and the positioning nut 30 is tightened, so that the rear end position of the blade is fixed. After the locking nut 40 is opened to replace the blade 20, the positioning nut 30 will not loosen and the positioning position will not change.

[0035] See also Figure 1-Figure 3 , no cutting edges are provided at both ends of the blade 20. Since the positioning nut 30 and the locking nut 40 need to move axially, the slide groove cannot cover the entire length of the blade 20, so the blade is only provided in the middle area, so that the blade part can be fully supported by the blade seat 10 even if it moves axially, thereby improving the strength of the blade.

[0036] See also Figure 1-Figure 3 The front end of the knife seat 10 is also threaded with a pressing ring 80, and the pressing ring 80 is tightly connected to the locking nut 40. The pressing ring 80 is used to tighten the locking nut 40, thereby preventing the locking nut 40 from loosening.

[0037] The working principle of the reamer which is easy to replace the reamer blade is as follows: according to the size of the inner diameter to be trimmed, a suitable blade 20 and a gasket 70 of a suitable number and thickness are selected to be cushioned between the positioning ring 60 and the positioning nut 30, and the positioning nut 30 is tightened so that the rear end position of the blade is fixed. After the locking nut 40 is opened to replace the blade 20, the positioning nut 30 will not be loosened and the positioning position will not change. Then the blade 20 is inserted from the front end of the slide groove, and the locking nut 40 is then tightened to fix it. Finally, the pressure ring 80 is tightened with the locking nut 40 to prevent the locking nut 40 from loosening. The two ends of the blade 20 are fitted with the locking nut 40 and the positioning nut 30 using conical surfaces, so that the blade 20 can be tightly fitted to the bottom wall of the slide groove, which plays a good positioning role. In summary, when replacing the blade 20, it is only necessary to unscrew the pressure ring 80 and the locking nut 40 to replace all the blades 20, which greatly improves the maintenance efficiency, has fewer parts than the prior art, and improves reliability and operability.

[0038] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A reamer that is easy to replace reamer blades, characterized in that: The present invention comprises a knife seat (10), wherein a slide groove is provided on the outer circumference of the knife seat (10), a knife blade (20) is slidably connected in the slide groove, and a positioning nut (30) and a locking nut (40) are screwed at both ends of the knife seat (10), and the positioning nut (30) and the locking nut (40) are in contact with the conical surfaces at both ends of the knife blade (20).

2. A reamer with easy-to-replace reamer blade according to claim 1, characterized in that: The slide groove on the blade seat (10) is wedge-fitted to the blade (20).

3. A reamer with easy-to-replace reamer blade according to claim 2, characterized in that: The bottom wall of the chute is inclined.

4. A reamer with easy-to-replace reamer blade according to claim 3, characterized in that: A ridged rod (50) is screwed onto the rear end of the knife seat (10).

5. A reamer with easy-to-replace reamer blade according to claim 4, characterized in that: A positioning ring (60) is fixedly connected to the front end of the edge rod (50).

6. A reamer with easy-to-replace reamer blade according to claim 5, characterized in that: A gasket (70) is provided between the positioning ring (60) and the positioning nut (30).

7. A reamer with easy-to-replace reamer blade according to claim 6, characterized in that: The blade (20) has no cutting edges at both ends.

8. A reamer with easy-to-replace reamer blade according to claim 7, characterized in that: A pressure ring (80) is also threadedly connected to the front end of the knife seat (10), and the pressure ring (80) is tightly attached to the locking nut (40).

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