Large-diameter precise inner hole disposable reamer

Abstract

The utility model discloses a large-diameter precise inner hole disposable reamer which comprises a disposable reamer body used for reaming a differential mechanism, the disposable reamer body is composed of a reamer head part and a reamer handle part, the reamer head part and the reamer handle part are integrally formed, one end of the reamer head part is fixedly provided with a plurality of first blades through bolts, and the other end of the reamer head part is fixedly provided with a plurality of second blades through bolts. The tool bit part and the clamping part are arranged, and the multiple first blades and the multiple second blades are installed on the tool bit part through the bolts, so that the machining efficiency and the product stability of the differential mechanism can be greatly improved, the size of the machined differential mechanism product is stable, and bad losses are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing tools, in particular to a large-diameter precision inner hole discarding type reamer. Background Art

[0002] Reamers are mainly used to finish existing holes to improve the size accuracy, shape accuracy and surface quality of the holes.

[0003] The existing patent document with announcement number CN215034145U discloses a new type of reamer, including a tool holder for use with a machine tool spindle, one end of the tool holder is provided with a tail flat for clamping a tool changing robot, and the other end of the tool holder is a reamer body, a portion of the end of the reamer body is recessed downward to form a chip groove, and a cutting edge and two guide blocks are evenly distributed on the side surface of the end of the reamer body, located on the remaining side of the chip groove, and the cutting edge is close to the chip groove, the cutting edge and the guide block are arranged in a rectangular protrusion, and the height of the guide block is lower than the cutting edge, and a central water outlet hole is also provided in the reamer body that runs through the entire reamer body, and the water outlet of the central water outlet hole is arranged in the chip groove.

[0004] Although the above-mentioned new reamer can solve the corresponding technical problems, it still has the following defects: when processing automobile differentials, the tool wears too quickly and needs to be frequently re-cut during processing, resulting in unstable product size and low efficiency, which affects processing efficiency.

[0005] Therefore, a large diameter precision inner hole discarding reamer is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a large-diameter precision inner hole discarding type reamer, which is used to solve the problems raised by the above background technology.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0008] Large diameter precision internal hole throwaway reamer, including:

[0009] A disposable reamer body for reaming holes in differentials, the disposable reamer body consisting of a cutter head and a shank, the cutter head and the shank being integrally formed, a plurality of blades 1 being fixedly mounted on one end of the cutter head by bolts, and blades 2 being symmetrically mounted on the middle portion of the cutter head by bolts.

[0010] As a preferred technical solution, a central water outlet hole is provided in the middle of the disposable reamer body and runs through the entire disposable reamer body, and the water outlets of the central water outlet hole are all provided at one location of the plurality of blades.

[0011] As a preferred technical solution, the mounting grooves for placing the blade 1 and the blade 2 are both ground by a high-precision grinder.

[0012] As a preferred technical solution, the disposable reamer body is entirely made of high-speed steel.

[0013] As an optimal technical solution, the blade 1 adopts a carbide milling blade with model APMT1135.

[0014] As a preferred technical solution, the second blade adopts a diamond-shaped carbide milling blade with model number CCMT09.

[0015] The utility model has at least the following beneficial effects:

[0016] The beneficial effect of the utility model of the present application is that by setting a cutter head and a clamping part, and installing multiple blades 1 and 2 on the cutter head through bolts, it can greatly improve the processing efficiency and product stability of the differential, make the processed differential product size stable, and reduce defective losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a large-diameter precision inner hole discarding reamer of the present utility model.

[0018] In the figure: 100, disposable reamer body; 200, blade 1; 300, bolt; 400, blade 2; 600, center water outlet; 700, handle; 800, cutter head. DETAILED DESCRIPTION

[0019] 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. Obviously, 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.

[0020] See also Figure 1 An embodiment of the present invention provides a large-diameter precision inner hole disposable reamer, comprising: a disposable reamer body 100 for reaming holes in a differential gear, the disposable reamer body 100 consisting of a cutter head 800 and a shank 700, the cutter head 800 and the shank 700 being integrally formed, a plurality of blades 200 being fixedly mounted on one end of the cutter head 800 by bolts 300, and blades 400 being symmetrically fixedly mounted on the middle portion of the cutter head 800 by bolts 300.

[0021] A central water outlet hole 600 is provided in the middle of the disposable reamer body 100, extending throughout the entire body. The outlets of the central water outlet hole 600 are located at multiple blades 200. By aligning the central water outlet hole 600 with the blades 200, the cutting fluid sprayed through the central water outlet hole 600 cools and lubricates the blades 200 during differential machining, thereby extending the service life of the blades 200. The cutting fluid sprayed through the central water outlet hole 600 also flushes away cut material, improving the reaming accuracy of the differential.

[0022] The mounting slots for insert 1 200 and insert 2 400 are both ground using a high-precision grinder. This process improves the positional accuracy of the reamer's mounting slots, ensuring the dimensions of the installed inserts 200 and 400 are within tolerance.

[0023] The discardable reamer body 100 is entirely made of high-speed steel, which has high hardness and toughness, as well as good shock resistance, and can improve the dimensional accuracy, shape accuracy, and surface quality of the reaming hole.

[0024] Insert 1-200 uses the APMT1135 carbide milling insert. Carbide's high hardness, strength, and wear resistance enable the APMT1135 milling insert to maintain excellent cutting performance and a long service life under high-speed and heavy-load cutting conditions, making it particularly suitable for reaming holes in differentials.

[0025] Insert 2, Model 400, uses a CCMT09 diamond-shaped carbide milling insert. The CCMT09 diamond-shaped carbide milling insert has a diamond-shaped shape that allows it to better adapt to different cutting directions and angles during milling. This highly flexible insert allows for a variety of milling operations, including chamfering differential orifices to improve machining quality.

[0026] The working principle of the present invention is as follows: when in use, blade 1 200 and blade 2 400 are installed on the mounting groove on the cutter head 800 by means of bolts 300, and then the shank 700 is fixed to the hydraulic shank of the machine tool to complete the final assembly. When the disposable reamer body 100 becomes dimensionally unstable, only blade 1 200 and blade 2 400 need to be replaced, thereby significantly improving processing efficiency and product stability.

[0027] Any portion not described in the present invention is the same as the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Large diameter precision inner hole discarding reamer, characterized by: include: A disposable reamer body (100) for reaming a differential, the disposable reamer body (100) consisting of a cutter head (800) and a shank (700), the cutter head (800) and the shank (700) being integrally formed, a plurality of blades (200) being fixedly mounted on one end of the cutter head (800) via bolts (300), and blades (400) being symmetrically fixedly mounted on the middle portion of the cutter head (800) via bolts (300); A central water outlet hole (600) running through the entire disposable reamer body (100) is provided in the middle of the disposable reamer body (100), and water outlets of the central water outlet hole (600) are all provided at the positions of the plurality of blades (200).

2. The large diameter precision inner hole discarding reamer according to claim 1, characterized in that: The discardable reamer body (100) is entirely made of high-speed steel.

3. The large diameter precision inner hole discarding reamer according to claim 1, characterized in that: The blade 1 (200) is a hard alloy milling blade of model APMT1135.

4. The large diameter precision inner hole discarding reamer according to claim 1, characterized in that: The blade 2 (400) is a diamond-shaped hard alloy milling blade with a model number of CCMT09.

Images