Welded expanding reamer

Abstract

The utility model belongs to the technical field of cutters, and discloses a welding type reaming cutter which comprises an alloy part and a steel body part which are welded into a whole. A spiral alloy groove is formed in the alloy part, a blade part of the alloy part is sequentially provided with a first step section, a second step section and a third step section from front to back, the heights of the first step section, the second step section and the third step section are gradually increased, and cutting cones are arranged at the front end of the first step section, the front end of the second step section and the front end of the third step section. According to the welding type expanding reamer, the defects of insufficient rigidity, poor wear resistance and short service life in the prior art are overcome by the alloy part; the tool is integrated with expanding and reaming, so that the defect of frequent tool changing in the prior art is reduced, the position degree deviation caused by secondary machining due to tool changing is avoided, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tools, and in particular relates to a welding type reamer. Background Art

[0002] like Figure 1 and Figure 2 As shown, the existing reaming and reaming process is processed in steps, with a reamer 100 and a reamer 200 for processing. The reamer and the reamer are both made of high-speed steel as raw material, which has poor wear resistance. It is cumbersome to use them in steps, the processing time is long, and the service life is short. Moreover, there is no guide for either reaming or reaming, so position deviations are prone to occur. The original tool uses high-speed steel as raw material, which has poor rigidity and poor wear resistance. When processing deep-hole parts due to poor rigidity, the hole is prone to become oval and larger in diameter. The short service life requires frequent tool replacement, which increases the processing time. The parts need to be processed in place and need to be processed twice, which takes a long time and has high processing costs. In addition, secondary processing is prone to position deviations. Utility Model Content

[0003] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide a welded reamer.

[0004] The technical solution adopted by this utility model is:

[0005] A welded reamer comprises an alloy portion and a steel body portion welded together; the alloy portion is provided with a spiral alloy groove; the blade portion of the alloy portion is provided with a first stage, a second stage and a third stage with increasing heights from front to back; the front ends of the first stage, the second stage and the third stage are all provided with cutting cones; the rear end of the alloy portion is a welded convex surface, and the front end of the steel body portion is a welded concave surface matching the welded convex surface.

[0006] Preferably, the steel body portion is provided with a steel body groove that communicates with the alloy groove on the alloy portion. The rear end of the steel body portion is connected to the shank portion. The convex welding surface and the concave welding surface are both V-shaped. The front end of the alloy portion is flat.

[0007] The beneficial effects of the utility model are:

[0008] The utility model provides a welded reamer, in which the alloy part improves the original defects of insufficient rigidity, poor wear resistance and short life; the tool is made into an expanding and reaming whole, which reduces the previous defect of frequent tool changes, avoids the position deviation caused by secondary processing due to tool change, and improves the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a schematic diagram of a reamer.

[0010] Figure 2 is a schematic diagram of a reamer.

[0011] Figure 3 It is a schematic diagram of the welding expansion reamer of the utility model.

[0012] Figure 4 It is a schematic diagram of another state of the welding reamer of the utility model.

[0013] Figure 5 It is a schematic diagram of the alloy part of the utility model.

[0014] Figure 6 It is a schematic diagram of the steel body and handle of the utility model.

[0015] Figure 7 This is a schematic diagram of the working state of the welding reamer of the utility model.

[0016] In the figure: 1-alloy part; 11-first stage; 12-second stage; 13-third stage; 14-cutting cone; 15-alloy groove; 16-welding convex surface; 2-steel body part; 21-steel body groove; 22-welding concave surface; 3-shank part; 100-reamer; 200-reamer. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0018] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 3 to 7 As shown, a welded reamer of this embodiment includes an alloy portion 1, a steel body portion 2 and a shank portion 3 arranged in sequence from front to back; the shank portion 3 is used to be clamped on the tool handle.

[0021] The front end of the alloy section 1 is flat. The blade portion of the alloy section 1 is sequentially arranged from front to back, with the first stage 11, the second stage 12, and the third stage 13 having increasing heights. Cutting cones 14 are located at the front ends of the first stage 11, the second stage 12, and the third stage 13. The first stage 11 is used for guidance and hole position correction; the second stage 12 is used for expanding the hole to remove large excess; and the third stage 13 is used for reaming to remove the final excess.

[0022] The rear end of the alloy part 1 is a welding convex surface 16, and the front end of the steel body part 2 is a welding concave surface 22 matching the welding convex surface 16. The welding convex surface 16 and the welding concave surface 22 are both V-shaped. After welding the welding convex surface 16 and the welding concave surface 22, the alloy part 1 and the steel body part 2 are welded into one.

[0023] The alloy portion 1 is provided with a spiral alloy groove 15, and the steel portion 2 is provided with a steel groove 21 that communicates with the alloy groove 15 on the alloy portion 1. The steel groove 21 is also spiral-shaped. The alloy groove 15 is polished to reduce chip friction, facilitate chip removal, and reduce cutting heat. The steel groove 21 is a spiral groove that facilitates chip removal and prevents blockage and breakage during machining.

[0024] Alloy part 1 is made of cemented carbide, which improves the original defects of insufficient rigidity, poor wear resistance, and short life. The tool is made into an integrated expansion and reaming, which reduces the previous defects of frequent tool changes and avoids the positioning deviation caused by secondary processing during tool changes, thus improving product quality and reducing processing costs.

[0025] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A welded reamer, characterized in that: The invention comprises an alloy part (1) and a steel body part (2) which are welded together. The alloy part (1) is provided with a spiral alloy groove (15). The blade part of the alloy part (1) is provided with a first stage (11), a second stage (12) and a third stage (13) with increasing heights from front to back. The front ends of the first stage (11), the second stage (12) and the third stage (13) are all provided with a cutting cone (14). The rear end of the alloy part (1) is a welding convex surface (16), and the front end of the steel body part (2) is a welding concave surface (22) matching the welding convex surface (16).

2. The welded reamer according to claim 1, characterized in that: The steel body portion (2) is provided with a steel body groove (21) that communicates with the alloy groove (15) on the alloy portion (1).

3. The welded reamer according to claim 1, characterized in that: The rear end of the steel body part (2) is connected to the handle part (3).

4. The welded reamer according to claim 1, characterized in that: The welding convex surface (16) and the welding concave surface (22) are both V-shaped.

5. The welded reamer according to claim 1, characterized in that: The front end of the alloy part (1) is a plane.

Images