Composite boring cutter for upper and lower chamfers of cylinder hole

Abstract

The utility model discloses a composite boring cutter for upper and lower chamfers of a cylinder hole. The composite boring cutter comprises a cutter bar, the first fixed block is fixedly mounted at the bottom end of the cutter bar; the second fixing block is fixedly mounted at the bottom end of the cutter bar and keeps a preset distance; the blades are symmetrically arranged between the first fixing block and the second fixing block; the locking assembly at least comprises screws which are symmetrically arranged in the first fixing block and penetrate through the blade to be in threaded connection with the second fixing block. According to the composite boring cutter for the upper and lower chamfers of the cylinder hole, the blade is fixed to the second fixing block in an abutting mode through the screw installed on the first fixing block, so that the blade is locked, meanwhile, the fixing effect of the screw is improved through the gasket, the situation that the stability of the blade is affected due to loosening of the screw caused by long-time cutting is avoided, and after the blade is abraded, the blade is prevented from being damaged. The blade can be directly replaced by a new blade without readjustment, so that the problem that the product quality is influenced by unstable operation of the cutter is solved, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite cutting tools, in particular to a composite boring tool for upper and lower chamfering of cylinder holes. Background Art

[0002] When processing the upper positive chamfer and the lower reverse chamfer of the diesel engine cylinder hole, a standard machine clamp chamfering tool is required to process the upper positive chamfer and the lower reverse chamfer, and circular interpolation is used in the machine tool program to complete the processing. The traditional standard machine clamp blade tool uses circular interpolation for processing, which will make the tool unstable during operation, resulting in long processing time and low efficiency. The chamfer depth produced by multiple interpolation processing is not uniform, and the angle is different from the standard required by the drawing. In addition, the smoothness of the chamfered part also has tool clamping marks left by multiple interpolation, which affects product quality. Utility Model Content

[0003] The utility model aims to provide a composite boring tool for upper and lower chamfering of a cylinder hole, which is used to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite boring tool for upper and lower chamfering of a cylinder hole, a tool bar;

[0005] A first fixing block fixedly mounted on the bottom end of the knife rod;

[0006] A second fixing block fixedly mounted on the bottom end of the knife rod and maintaining a predetermined distance;

[0007] A blade symmetrically arranged between the first fixing block and the second fixing block;

[0008] A gasket symmetrically arranged on the first fixing block and plugged into the side wall of the blade;

[0009] The locking assembly at least comprises a screw which is symmetrically arranged in the first fixing block and passes through the blade and is threadedly connected with the second fixing block.

[0010] Preferably, a thread groove is formed on the side wall of the first fixing block.

[0011] Preferably, a through hole is provided in the first fixing block, a screw is movably connected in the through hole, and one end of the screw is threadedly connected in the thread groove.

[0012] Preferably, a resistance spring is fixedly installed in the through hole, a gasket is fixedly connected to the end surface of the resistance spring, the gasket is sleeved on the transverse screw, and the bottom end of the gasket is provided with protrusions in a circular array.

[0013] Preferably, the side wall of the blade is provided with grooves in a circumferential array, and a protrusion is fixedly connected in the groove.

[0014] Preferably, the side wall of the first fixed block is provided with a limiting block in a circumferential array, the other end of the limiting block is fixedly connected to the second fixed block, and the side wall of the limiting block is fixedly connected to the blade.

[0015] In the above technical scheme, the utility model provides a composite boring tool for upper and lower chamfering of a cylinder hole, which has the following beneficial effects: a predetermined distance is maintained between the first fixed block and the second fixed block installed at the bottom of the tool rod, so that the blade can be installed between the first fixed block and the second fixed block, and the blade installed on the first fixed block is inserted on the blade, so that the blade is fixed between the first fixed block and the second fixed block, and the two blades are kept tilted at a predetermined angle, and the blade is fixed to the second fixed block by the screw installed on the first fixed block, so that the blade is locked, and at the same time, the fixing effect of the screw is increased by the gasket to avoid long-term cutting causing the screw to loosen, thereby affecting the stability of the blade. When the blade is worn, it can be directly replaced with a new blade without readjustment, which solves the problem of unstable tool operation affecting product quality and improves product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the blade of the utility model;

[0019] Figure 3 This is a schematic diagram of the limit block structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the screw of the present utility model.

[0021] Description of reference numerals:

[0022] 1. Cutter bar; 2. First fixed block; 3. Second fixed block; 4. Blade; 5. Limit block; 6. Through hole; 7. Stop spring; 8. Gasket; 9. Bump; 10. Groove; 11. Screw; 12. Thread groove. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1-4 As shown, a composite boring tool for upper and lower chamfering of a cylinder bore comprises:

[0025] Tool bar 1;

[0026] A first fixing block 2 fixedly mounted on the bottom end of the knife bar 1;

[0027] A second fixing block 3 fixedly mounted on the bottom end of the knife rod 1 and maintaining a predetermined distance;

[0028] A blade 4 symmetrically arranged between the first fixing block 2 and the second fixing block 3;

[0029] A gasket 8 symmetrically arranged on the first fixing block 2 and plugged into the side wall of the blade 4;

[0030] The locking assembly at least includes a screw 11 which is symmetrically arranged in the first fixing block 2 and passes through the blade 4 and is threadedly connected to the second fixing block 3 .

[0031] Specifically, by symmetrically placing the blade 4 between the first fixed block 2 and the second fixed block 3, the tool rod 1 can control the blade 4 to process the upper positive chamfer and the lower reverse chamfer of the boring hole, and the gasket 8 installed on the first fixed block 2 is plugged into the blade 4 so that the gasket 8 pre-fixes the blade 4, so that the two blades 4 can be adjusted to a predetermined angle. When the angle of the blade 4 is adjusted, the blade 4 is fixed to the second fixed block 3 by the screw 11 installed on the first fixed block 2, so that the blade 4 is locked, and the stability of the screw 11 is increased by the gasket 8 to avoid the screw 11 from loosening due to long-term use, thereby improving the stability of the blade 4.

[0032] In the above embodiment, a predetermined distance is maintained between the first fixed block 2 and the second fixed block 3 installed at the bottom of the tool rod 1, so that the blade 4 can be installed between the first fixed block 2 and the second fixed block 3, and the blade 4 installed on the first fixed block 2 is inserted on the blade 4, so that the blade 4 is fixed between the first fixed block 2 and the second fixed block 3, and the two blades 4 are kept tilted at a predetermined angle, and the blade 4 is fixed to the second fixed block 3 by the screw 11 installed on the first fixed block 2, so that the blade 4 is locked, and at the same time, the fixing effect of the screw 11 is increased by the gasket 8 to avoid the screw 11 from loosening due to long-term cutting, thereby affecting the stability of the blade 4. When the blade 4 is worn, it can be directly replaced with a new blade 4 without readjustment, which solves the problem of unstable tool operation affecting product quality and improves product quality and production efficiency.

[0033] As an embodiment further provided by the present invention, a thread groove 12 is formed on the side wall of the first fixing block 2 .

[0034] Furthermore, a through hole 6 is provided in the first fixing block 2 , a screw 11 is movably connected in the through hole 6 , and one end of the screw 11 is threadedly connected in the thread groove 12 .

[0035] Specifically, the screw 11 disposed in the through hole 6 passes through the blade 4 and is threadedly engaged with the thread groove 12, so that the screw 11 can fix the blade 4 on the second fixed block, thereby locking the blade 4.

[0036] As another embodiment further provided by the present invention, a blocking spring 7 is fixedly installed in the through hole 6, a gasket 8 is fixedly connected to the end face of the blocking spring 7, the gasket 8 is sleeved on the transverse screw 11, and a protrusion 9 in a circular array is arranged at the bottom end of the gasket 8.

[0037] Furthermore, the side wall of the blade 4 is provided with grooves 10 in a circumferential array, and the protrusions 9 are fixedly connected in the grooves 10 .

[0038] Specifically, the gasket 8 installed in the through hole 6 is sleeved on the screw 11, so that the screw 11 pushes the gasket 8 when moving into the thread groove 12, so that the protrusion 9 installed on the gasket 8 is inserted into the groove 10, and the blade 4 can be pre-fixed. At the same time, the protrusion 9 is inserted into different grooves 10, so that the protrusion 9 can pre-fix the blade 4 at different angles. When the tool needs to be replaced, the screw 11 is disengaged from the first fixing block 2 by rotating the screw 11 to release the lock of the blade 4. At the same time, the spring 7 pulls the gasket 8 back into the through hole 6, and the blade 4 can be replaced.

[0039] As another embodiment further provided by the present invention, the side wall of the first fixed block 2 is provided with a limiting block 5 in a circular array, the other end of the limiting block 5 is fixedly connected to the second fixed block 3, and the side wall of the limiting block 5 is fixedly connected to the blade 4.

[0040] Specifically, the limit block 5 installed on the first fixed block 2 is connected to the second fixed block 3, so that the limit block 5 can abut the blade 4, so that the blade 4 is restricted by the limit block 5, avoiding displacement of the blade 4 during cutting, thereby increasing the stability of the blade 4 during cutting.

[0041] Working principle: A predetermined distance is maintained between the first fixing block 2 and the second fixing block 3, so that the blade 4 can be installed between the first fixing block 2 and the second fixing block 3, and the gasket 8 is pushed by the screw 11 arranged in the through hole 6, so that the protrusion 9 installed on the gasket 8 abuts against the groove 10 opened in the blade 4, so that the protrusion 9 pre-fixes the blade 4, and the angle of the blade 4 can be adjusted by rotating the blade 4 so that the blade 4 can process chamfers of different angles. When the blade 4 is adjusted to a predetermined angle and pre-fixed, the screw 11 is rotated to pass through the blade 4 and connected to the thread groove 12, so that the screw 11 fixes the blade 4 on the second fixing block 3 for locking, and the fixing effect of the screw 11 is increased by the gasket 8 to prevent the screw 11 from loosening, and the limit block 5 installed on the first fixing block 2 abuts against the blade 4, so that the limit block 5 provides restriction to the blade 4, so that the blade 4 is more stable when used, thereby improving the product quality.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite boring tool for upper and lower chamfering of a cylinder bore, characterized in that: include: Tool bar (1); A first fixing block (2) fixedly mounted on the bottom end of the knife rod (1); A second fixing block (3) fixedly mounted on the bottom end of the knife rod (1) and maintaining a predetermined distance; A blade (4) symmetrically arranged between the first fixing block (2) and the second fixing block (3); A gasket (8) symmetrically arranged on the first fixing block (2) and plugged into the side wall of the blade (4); The locking assembly at least comprises a screw (11) which is symmetrically arranged in the first fixing block (2) and passes through the blade (4) and is threadedly connected to the second fixing block (3).

2. A composite boring tool for upper and lower chamfering of a cylinder bore according to claim 1, characterized in that: A thread groove (12) is formed on the side wall of the first fixing block (2).

3. A composite boring tool for upper and lower chamfering of a cylinder bore according to claim 1, characterized in that: A through hole (6) is provided in the first fixing block (2), a screw (11) is movably connected in the through hole (6), and one end of the screw (11) is threadedly connected in the thread groove (12).

4. A composite boring tool for upper and lower chamfering of a cylinder bore according to claim 3, characterized in that: A resistance spring (7) is fixedly installed in the through hole (6), a gasket (8) is fixedly connected to the end surface of the resistance spring (7), the gasket (8) is sleeved on the transverse screw (11), and a protrusion (9) in a circular array is arranged at the bottom end of the gasket (8).

5. A composite boring tool for upper and lower chamfering of a cylinder bore according to claim 1, characterized in that: The side wall of the blade (4) is provided with grooves (10) in a circumferential array, and a protrusion (9) is fixedly connected in the groove (10).

6. A composite boring tool for upper and lower chamfering of a cylinder bore according to claim 1, characterized in that: The side wall of the first fixed block (2) is provided with a limiting block (5) in a circumferential array, the other end of the limiting block (5) is fixedly connected to the second fixed block (3), and the side wall of the limiting block (5) is fixedly connected to the blade (4).

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