Floating self-centering reamer

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a floating self-centering reamer which comprises a reamer sleeve, a ball screw and a reamer body, the reamer sleeve is provided with evenly-distributed threaded holes in the radial direction of the reamer sleeve and provided with a square hole in the axial direction, one end of the reamer body is provided with a square boss in the axial direction, and the square boss of the reamer body is placed in the square hole of the reamer sleeve. According to the floating self-centering reamer, the problem that the axis of the reamer does not coincide with the rotation axis of the main shaft in the reaming process can be effectively solved, the reaming quality is improved, the designability of the floating self-centering reamer is good, the structure is simple and reliable, and the floating self-centering reamer is suitable for popularization and application. And the reaming quality of the precision hole can be simply and efficiently improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and particularly relates to a floating self-centering reamer. Background Art

[0002] In today's advanced machinery manufacturing industry, reamers are increasingly used to ensure consistent quality and high efficiency during high-volume production. However, improper reamer clamping and machine spindle precision errors often lead to misalignment between the reamer axis and the spindle's rotational axis. This can lead to finished holes exceeding the reamer's dimensions, resulting in defective products. This creates significant inconvenience, wastes resources, and increases manufacturing costs. Consequently, existing reaming technology requires further improvement and advancement. Utility Model Content

[0003] Purpose of the utility model: The utility model proposes a floating self-centering reamer, which can effectively avoid the problem of non-coincidence between the reamer axis and the spindle rotation axis during reaming, thereby improving the reaming quality. The floating self-centering reamer has good designability, simple and reliable structure, and can simply and efficiently improve the quality of precision hole reaming.

[0004] Technical solution:

[0005] A floating self-centering reamer, which includes a tool sleeve 1, a ball screw 2, and a reamer 3. The tool sleeve 1 is provided with evenly distributed threaded holes along the radial direction of the tool sleeve and a square hole along the axial direction. One end of the reamer 3 is provided with a square boss along the axial direction. The square boss of the reamer 3 is placed in the square hole of the tool sleeve 1 and is loosely matched with the square hole of the tool sleeve 1. The shank of the reamer 3 is axially positioned by the ball screw 2 floatingly set in the threaded hole.

[0006] Furthermore, the square hole arranged along the axial direction of the tool sleeve 1 is a square hole or a hexagonal hole.

[0007] Furthermore, the thread of the ball screw 2 matches the threaded hole of the tool sleeve 1 provided along the radial direction of the tool sleeve.

[0008] Furthermore, the square platform provided along the axial direction of the reamer 3 is a square boss or a hexagonal boss, which matches the square hole or the hexagonal hole provided along the axial direction of the tool sleeve 1.

[0009] Furthermore, a shaped annular groove is provided on the outer circle of the handle of the reamer 3 to match the ball head of the ball head screw 2.

[0010] Furthermore, the ball head screw 2 includes a threaded sleeve 4, a spring 5 and a ball head 6, the threaded sleeve 4 is provided with an external thread matching the threaded hole of the tool sleeve 1, a spring (5) is provided inside the threaded sleeve 4, one end of the spring 5 is connected to the inner wall of the threaded sleeve 4, and the other end is connected to the ball head 6.

[0011] Beneficial effects:

[0012] The floating self-centering reamer proposed by the utility model has good design, simple and reliable structure, effectively solves the problem of poor reaming quality caused by insufficient precision of the tool clamping system and the machine tool spindle, and is particularly suitable for reaming high-precision holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Exploded diagram of floating self-centering reamer;

[0014] Figure 2 Schematic diagram of floating self-centering reamer assembly;

[0015] Figure 3 Schematic diagram of the knife sheath;

[0016] Figure 4 Ball head screw intention;

[0017] Among them, 1- tool holder, 2- ball head screw, 3- reamer, 4- threaded sleeve, 5- spring, 6- ball head. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The utility model proposes a floating self-centering reamer, which includes a tool sleeve 1, a ball screw 2, and a reamer 3. The tool sleeve 1 is provided with evenly distributed threaded holes along the radial direction of the tool sleeve and a square hole along the axial direction. One end of the reamer 3 is provided with a square boss along the axial direction. The square boss of the reamer 3 is placed in the square hole of the tool sleeve 1 and is clearance-matched with the square hole of the tool sleeve 1. The shank of the reamer 3 is axially positioned by the ball screw 2 floatingly set in the threaded hole.

[0020] The square hole of the tool sleeve 1 axially arranged is a square hole or a hexagonal hole, and the square platform of the reamer 3 axially arranged is a square boss or a hexagonal boss, which matches the square hole or the hexagonal hole of the tool sleeve 1 axially arranged.

[0021] Among them, the thread of the ball head screw 2 matches the threaded hole arranged in the radial direction of the tool sleeve 1; a shaped ring groove is provided on the outer circle of the shank of the reamer 3, which matches the ball head of the ball head screw 2; the ball head screw 2 includes a threaded sleeve 4, a spring 5 and a ball head 6, the threaded sleeve 4 is provided with an external thread matching the threaded hole of the tool sleeve 1, and a spring (5) is provided inside the threaded sleeve 4, one end of the spring 5 is connected to the inner wall of the threaded sleeve 4, and the other end is connected to the ball head 6.

[0022] The reamer moves axially above the center of the hole to be machined. Due to machine tool repetitive positioning errors or tool clamping errors, the reamer center and the center of the hole to be machined are not coaxial. In this case, due to the floating connection between the reamer and the tool holder, the reamer automatically adjusts the position of the reamer axis to coincide with the axis of the hole to be machined when the reamer enters the hole. After one reciprocating motion, the hole is machined to the drawing requirements.

[0023] This floating self-centering reamer is efficient and convenient to process, overcoming the quality and efficiency problems in previous internal hole finishing. It has low requirements on equipment and can meet the processing requirements using ordinary domestic manual or automatic equipment, overcoming the requirement for imported high-precision equipment when finishing holes.

Claims

1. A floating self-centering reamer, characterized by: The floating self-centering reamer comprises a tool sleeve (1), a ball screw (2), and a reamer (3). The tool sleeve (1) is provided with threaded holes evenly distributed along the radial direction of the tool sleeve and a square hole along the axial direction. One end of the reamer (3) is provided with a square boss along the axial direction. The square boss of the reamer (3) is placed in the square hole of the tool sleeve (1) and is clearance-matched with the square hole of the tool sleeve (1). The shank of the reamer (3) is axially positioned by the ball screw (2) floatingly arranged in the threaded hole. The ball screw (2) comprises a threaded sleeve (4), a spring (5), and a ball head (6). The threaded sleeve (4) is provided with an external thread matching the threaded hole of the tool sleeve (1). The threaded sleeve (4) is provided with a spring (5). One end of the spring (5) is connected to the inner wall of the threaded sleeve (4), and the other end is connected to the ball head (6).

2. A floating self-centering reamer according to claim 1, characterized in that: The square hole arranged in the axial direction of the knife sleeve (1) is a square hole or a hexagonal hole.

3. The floating self-centering reamer according to claim 1, characterized in that: The thread of the ball screw (2) matches the threaded hole of the tool sleeve (1) arranged along the radial direction of the tool sleeve.

4. The floating self-centering reamer according to claim 2, characterized in that: The square platform provided along the axial direction of the reamer (3) is a square boss or a hexagonal boss, and matches the square hole or the hexagonal hole provided along the axial direction of the tool sleeve (1).

5. The floating self-centering reamer according to claim 3, characterized in that: A shaped ring groove is provided on the outer circle of the shank of the reamer (3) and matches the ball head of the ball head screw (2).

Images