Finish turning blade for inner hole of input shaft

Abstract

The utility model relates to the technical field of turning tools, in particular to an input shaft inner hole finish turning blade which comprises a tool bar and a blade body, one end of the tool bar is arc-shaped, an installation hole is formed in the arc-shaped end face, an adjusting disc is arranged in the installation hole and can rotate in the installation hole, and the adjusting disc can rotate in the installation hole. The blade is provided with a mounting hole, the end of the adjusting disc is exposed out of the mounting hole, the blade is provided with a stepped hole, the adjusting disc is fixedly connected with a bolt penetrating through the stepped hole, the bolt is slidably sleeved with a positioning part, and the bolt is in threaded connection with a nut used for pushing the positioning part to move downwards to limit and fix the blade. According to the utility model, the adjusting disc is rotatably arranged in the mounting hole, the adjusting disc is exposed outside the mounting hole, and the adjusting disc rotates in the mounting hole, so that the fixed blade can be driven to rotate, namely the mounting angle of the blade can be changed, and the mounting angle of the blade can be conveniently adjusted according to the actual machining condition.

Description

Technical Field

[0001] The utility model relates to the technical field of turning tools, in particular to a cutting blade for finishing the inner hole of an input shaft. Background Art

[0002] Finishing inserts are cutting tools used for precision turning. They are usually made of high-hardness materials such as cemented carbide, ceramics or superhard materials. Finishing inserts have sharp cutting edges and excellent cutting performance, which can achieve high efficiency and high-quality processing in high-speed and high-precision turning processes.

[0003] For example, publication number CN208437688U discloses a chip-blocking turning blade. Although the turning blade can block the waste chips generated during the processing to prevent the waste chips from extending too long, thereby reducing damage to the workpiece, the turning blade and the processing machine, the turning blade cannot adjust the installation angle according to the actual turning situation during use, thereby reducing the adaptability of turning.

[0004] For another example, publication number CN209157160U discloses an outer cylindrical finishing blade, in which the included angle of the tool tip formed between the main cutting edge and the secondary cutting edge is 23° to 26°, and the outer circle of different diameters of the workpiece is processed at one time by the tool tip 3 using the profiling processing of the lathe, thereby improving the processing efficiency of the workpiece. The installation method of the finishing blade is to fix the blade in the blade groove by bolts through the through hole in the middle of the finishing blade. The blade is only installed and fixed by bolts. When the blade is subjected to external force during turning, it is easy to deviate and shake, and the installation angle of the turning tool cannot be adjusted according to the actual turning situation during use.

[0005] During the installation and use of the blades in the above two solutions, the blades cannot be stably and firmly installed on the tool rod, and during subsequent use, the installation angle of the blades cannot be adjusted according to the actual turning conditions. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide an input shaft inner hole finishing blade to solve the problem that the existing blade is not firm and stable enough when installed, and the blade is prone to deviation and shaking when subjected to external force during turning.

[0007] Based on the above-mentioned purpose, the utility model provides a blade for finishing the inner hole of an input shaft, comprising a tool rod and a blade, one end of the tool rod is arranged in an arc shape, and a mounting hole is opened on the arc end face, an adjusting disk is arranged in the mounting hole, the adjusting disk can rotate in the mounting hole, and the end of the adjusting disk is exposed outside the mounting hole; a stepped hole is opened on the blade, a bolt passing through the stepped hole is fixedly connected to the adjusting disk, a positioning part is provided on the sliding sleeve of the bolt, and a nut is threadedly connected on the bolt for pushing the positioning part downward to limit and fix the blade.

[0008] Preferably, the positioning portion comprises a movable plate, the movable plate is provided with a through hole for the bolt to pass through, the blade is provided with two positioning grooves, and the movable plate is fixedly connected with a positioning block adapted to the positioning groove.

[0009] Preferably, a limiting block is fixedly connected to the inner wall of the through hole, and a limiting groove for limiting upward and downward movement is provided on the surface of the bolt.

[0010] Preferably, a spring is sleeved on the bolt, one end of the spring abuts against the inner wall of the stepped hole, and the other end of the spring abuts against the lower surface of the movable plate.

[0011] Preferably, the fixing sleeve on the adjusting disk is provided with an annular strip, the inner wall of the mounting hole is provided with an annular groove for accommodating the annular strip, and the end of the knife rod is provided with an arc-shaped through groove communicating with the annular groove.

[0012] Preferably, a locking bolt penetrating the arc-shaped through groove is fixedly connected to the annular strip, and a locking nut is threadedly connected to the locking bolt.

[0013] Preferably, an arc-shaped gasket is sleeved on the locking bolt, and tightening the locking nut pushes the arc-shaped gasket to fit the arc-shaped surface of the end of the shank.

[0014] The beneficial effects of the utility model are as follows: by tightening the nut, the nut pushes the positioning part downward, and the adjusting disk is exposed outside the mounting hole, the positioning part moves downward and tightly presses the blade against the surface of the adjusting disk, thereby improving the stability of the blade installation and avoiding the blade from shifting during processing, which affects the processing efficiency.

[0015] By rotating the adjusting disk in the mounting hole and exposing the adjusting disk outside the mounting hole, the adjusting disk rotates in the mounting hole, which can drive the fixed blade to rotate, that is, the installation angle of the blade can be changed, making it easy to adjust the installation angle of the blade according to actual processing conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the exploded structure;

[0019] Figure 3 This is a schematic diagram of the structure of the knife bar in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjusting disk and the locking bolt of the embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the positioning part of an embodiment of the utility model.

[0022] In the figure: 1. knife bar; 2. blade; 3. adjusting disk; 31. annular strip; 32. annular groove; 33. arc-shaped through groove; 34. locking bolt; 35. locking nut; 36. arc-shaped gasket; 4. bolt; 5. positioning part; 51. moving plate; 52. positioning groove; 53. positioning block; 54. limiting block; 55. limiting groove; 56. spring; 6. nut. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a blade for finishing the inner hole of an input shaft comprises a tool rod 1 and a blade 2. The tip angle of the blade 2 is ground to 26°, and the inner hole of the workpiece is processed at one time by the tool tip using the profiling processing of a lathe, thereby improving the processing efficiency of the workpiece. One end of the tool rod 1 is arranged in an arc shape, and a mounting hole is opened on the arc end face. An adjusting disk 3 is arranged in the mounting hole. The adjusting disk 3 can rotate in the mounting hole, and the end of the adjusting disk 3 is exposed outside the mounting hole.

[0026] A stepped hole is provided on the blade 2, a bolt 4 penetrating the stepped hole is fixedly connected to the adjusting disk 3, a positioning portion 5 is slidingly sleeved on the bolt 4, and a nut 6 for pushing the positioning portion 5 downward to limit and fix the blade 2 is threadedly connected to the bolt 4.

[0027] By tightening the nut 6, the nut 6 pushes the positioning part 5 downward, pressing the blade 2 tightly against the adjusting disk 3, so that the blade 2 can be firmly installed on the adjusting disk 3, and rotating the adjusting disk 3 can drive the blade 2 to rotate, that is, the installation angle of the blade 2 can be adjusted, which is convenient for angle adjustment according to actual processing conditions.

[0028] In a preferred embodiment of the present utility model, the positioning portion 5 includes a movable plate 51, the movable plate 51 is provided with a through hole for the bolt 4 to pass through, the blade 2 is provided with two positioning grooves 52, and the movable plate 51 is fixedly connected with a positioning block 53 adapted to the positioning groove 52. When the nut 6 is tightened to push the movable plate 51 downward, the movable plate 51 is pressed against the surface of the blade 2, and the positioning block 53 can be inserted into the positioning groove 52, thereby further improving the limiting fixation of the blade 2, and the blade 2 can be more firmly installed on the adjusting disk.

[0029] In another preferred embodiment of the utility model, the inner wall of the through hole is fixedly connected to a limiting block 54, and a limiting groove 55 is provided on the surface of the bolt 4 for the limiting block 54 to move up and down. The limiting block 54 and the limiting groove 55 limit the displacement of the movable plate 51, so that the movable plate 51 can only move up and down but cannot rotate. When the movable plate 51 moves down and presses against the surface of the blade 2, the positioning block 53 is inserted into the positioning groove 52, so that the limiting groove 55 and the limiting block 54 also limit the displacement of the blade 2, that is, the blade 2 cannot rotate, making the blade 2 more firmly on the adjusting disk 3.

[0030] In another preferred embodiment of the utility model, a spring 56 is sleeved on the bolt 4, one end of the spring 56 abuts against the inner wall of the stepped hole, and the other end of the spring 56 abuts against the lower surface of the movable plate 51. When one end of the blade 2 is damaged and the other end needs to be adjusted for use, the nut 6 is loosened and the nut 6 is rotated upward to release the pressure on the movable plate 51. Subsequently, under the action of the elastic force of the spring 56, the movable plate 51 is pushed upward, thereby driving the positioning block 53 to disengage from the positioning groove 52, releasing the limiting fixation of the blade 2, and facilitating the replacement of the two ends of the blade 2.

[0031] It should be noted that an annular strip 31 is fixedly sleeved on the adjusting disk 3, an annular groove 32 for placing the annular strip 31 is provided on the inner wall of the mounting hole, an arc-shaped through groove 33 communicating with the annular groove 32 is provided at the end of the knife rod 1, and the annular strip 31 supports the adjusting disk 3 in the mounting hole, and through the cooperation of the annular groove 32 and the annular strip 31, the adjusting disk 3 can rotate in the mounting hole.

[0032] It should be noted that a locking bolt 34 passing through the arc-shaped through groove 33 is fixedly connected to the annular strip 31, a locking nut 35 is threadedly connected to the locking bolt 34, an arc-shaped gasket 36 is sleeved on the locking bolt 34, the arc-shaped gasket 36 increases the contact area between the locking nut 35 and the end of the knife rod 1, and tightening the locking nut 35 pushes the arc-shaped gasket 36 to fit the arc surface of the end of the knife rod 1.

[0033] When it is necessary to adjust the installation angle of the blade 2, loosen the locking nut 35 to release the abutment of the arc-shaped gasket 36 on the end of the tool rod 1, and then move the locking nut 35. The locking nut 35 moves in the arc-shaped through groove 33, thereby driving the adjustment disk 3 to rotate in the installation hole, and then driving the blade 2 to rotate, that is, the installation angle of the blade 2 can be changed. After the angle is properly adjusted, tighten the locking nut 35 to push the arc-shaped gasket 36 to press the end of the tool rod 1 to fix the adjustment disk 3, thereby facilitating the adjustment of the installation angle of the blade 2 according to actual processing conditions.

[0034] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cutting blade for finishing the inner hole of an input shaft, comprising a cutting rod (1) and a cutting blade (2), characterized in that: One end of the knife rod (1) is arranged in an arc shape, and a mounting hole is provided on the arc end surface, an adjusting disk (3) is provided in the mounting hole, the adjusting disk (3) can rotate in the mounting hole, and the end of the adjusting disk (3) is exposed outside the mounting hole; a stepped hole is provided on the blade (2), a bolt (4) penetrating the stepped hole is fixedly connected to the adjusting disk (3), a positioning portion (5) is slidably sleeved on the bolt (4), and a nut (6) is threadedly connected to the bolt (4) for pushing the positioning portion (5) downward to limit and fix the blade (2).

2. The input shaft inner hole finishing cutting insert according to claim 1, characterized in that: The positioning portion (5) comprises a movable plate (51), the movable plate (51) being provided with a through hole for the bolt (4) to pass through, the blade (2) being provided with two positioning grooves (52), and the movable plate (51) being fixedly connected with a positioning block (53) adapted to the positioning groove (52).

3. The input shaft inner hole finishing cutting insert according to claim 2, characterized in that: The inner wall of the through hole is fixedly connected to a limit block (54), and the surface of the bolt (4) is provided with a limit groove (55) for the limit block (54) to move up and down.

4. The input shaft inner hole finishing cutting insert according to claim 2, characterized in that: A spring (56) is sleeved on the bolt (4), one end of the spring (56) abuts against the inner wall of the stepped hole, and the other end of the spring (56) abuts against the lower surface of the moving plate (51).

5. The input shaft inner hole finishing cutting insert according to claim 1, characterized in that: The adjusting disk (3) is fixedly sleeved with an annular strip (31), the inner wall of the mounting hole is provided with an annular groove (32) for accommodating the annular strip (31), and the end of the knife rod (1) is provided with an arc-shaped through groove (33) communicating with the annular groove (32).

6. The input shaft inner hole finishing cutting insert according to claim 5, characterized in that: A locking bolt (34) penetrating the arc-shaped through groove (33) is fixedly connected to the annular strip (31), and a locking nut (35) is threadedly connected to the locking bolt (34).

7. The input shaft inner hole finishing cutting insert according to claim 6, characterized in that: An arc-shaped gasket (36) is sleeved on the locking bolt (34), and the locking nut (35) is tightened to push the arc-shaped gasket (36) to fit the arc-shaped surface of the end of the knife rod (1).

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