Reamer for machining stepped hole

Abstract

The utility model provides an expanding drill for machining a stepped hole, and aims to solve the technical problem of long time consumption in the stepped hole machining process. The reamer comprises a rod body, one end of the rod body is provided with a conical drill bit, and the diameter of the drill bit is larger than the size of the rod body; the reaming body is provided with a spiral blade in the circumferential direction, a mounting hole is formed in the middle of the reaming body in the axis direction of the reaming body, and the reaming body can be arranged on the rod body in a sleeving mode; the fixing block is detachably arranged on the rod body, and one end of the fixing block can abut against the end of the reaming body; wherein a plurality of reaming bodies can be arranged on the rod body. According to the actual requirement for hole machining, the reaming bodies of different sizes are selected to be installed on the rod body, the fixing block abuts against the end of the last reaming body, and then the rod body can be installed on a machining platform (such as calipers of an electric drill) for stepped hole machining. According to the technical scheme, the needed stepped hole can be machined at a time, and the time for machining the stepped hole can be greatly shortened.

Description

Technical Field

[0001] The utility model relates to a mechanical processing tool, in particular to a hole reamer used for processing a stepped hole. Background Art

[0002] Drill bits are used in the machining industry to process hole structures, among which step holes are a type of hole processed by drill bits. Holes of different sizes are coaxially arranged in sequence to form a step hole in a ladder shape. In the process of machining step holes, drill bits of different sizes are required. Generally, the smallest drill bit is used for machining, and then the larger drill bits are replaced in sequence. The whole machining process is relatively troublesome and takes a very long time. Utility Model Content

[0003] In view of the technical problem that the process of machining stepped holes in the prior art is time-consuming, the utility model provides a reaming drill for machining stepped holes, which has the advantage of being able to machine the stepped holes in one go.

[0004] The technical solution of the utility model is:

[0005] A reamer drill for machining a stepped hole, comprising:

[0006] A rod body, one end of which has a tapered drill bit, the diameter of the drill bit being larger than the size of the rod body;

[0007] A hole reamer, which has a spiral blade in its circumference, a mounting hole in the middle of the hole reamer along its axial direction, and the hole reamer can be sleeved on the rod body;

[0008] A fixing block is detachably mounted on the rod body, and one end of the fixing block can abut against the end of the reamer;

[0009] Wherein, a plurality of the reamer bodies may be arranged on the rod body.

[0010] Optionally, the rod body has a plurality of threaded holes, all of which are distributed along the length direction of the rod body, and the fixing block is detachably connected to the threaded holes.

[0011] Optionally, the fixing block is a long strip plate-like structure, and the interior of the fixing block has a waist-shaped hole, and the fixing block is detachably connected to the threaded hole by a bolt.

[0012] Optionally, the outer wall of the rod body is provided with a limiting groove along its length direction, and the inner wall of the reamer body has a limiting block matching the limiting groove.

[0013] Optionally, all the threaded holes are located in the limiting groove, and the fixing block is also located in the limiting groove.

[0014] Optionally, the thickness of the fixing block is less than or equal to the depth of the limiting groove.

[0015] Optionally, the length of the waist-shaped hole on the fixing block is greater than or equal to the distance between two adjacent threaded holes.

[0016] Optionally, the rod body is a polygonal columnar structure, and the limiting groove is located on a side surface of the outside of the rod body;

[0017] The interior of the hole expansion body is a polygonal hole structure.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Firstly, a drill is arranged at the end of the rod body to drill a reference hole on the workpiece, and then the workpiece is processed by a reaming body detachably arranged on the rod body, and the reaming body is fixed by a fixed block.

[0020] During work, according to the actual needs of hole processing, select expansion bodies of different sizes to install on the rod body, then install the fixing block on the rod body, and make the fixing block abut against the end of the last expansion body. Then, the rod body can be installed on a processing platform (such as the caliper of an electric drill) to process the stepped hole.

[0021] This technical solution can process the required stepped holes at one time, which can greatly shorten the time for processing the stepped holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 is a schematic diagram of the three-dimensional structure of the rod body;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the expansion body. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Example:

[0030] See also Figure 1-Figure 3 A reamer for machining stepped holes comprises a rod body 1, a reamer 2 and a fixing block 3. Specifically, the rod body 1 is a long strip structure, and a drill bit 4 is fixedly arranged at one end of the rod body 1. The drill bit 4 has a spiral blade, and the end of the drill bit 4 away from the rod body 1 is tapered. When the drill bit 4 and the rod body 1 rotate, the outer diameter of the drill bit 4 is larger than the outer diameter of the rod body 1.

[0031] The reaming body 2 is a cylindrical structure, and a spiral blade is also provided on the circumference of the reaming body 2 . The spiral direction of the blade is the same as the spiral direction of the blade on the drill bit 4 . In addition, the pitch of the blade is also the same as the pitch of the blade on the drill bit 4 .

[0032] The reaming body 2 has a mounting hole 5 inside, and the end of the rod body 1 away from the drill bit 4 passes through the mounting hole 5, so that the reaming body 2 can be detachably mounted on the rod body 1.

[0033] The fixing block 3 is detachably arranged on the outer periphery of the rod body 1, and when the fixing block 3 is installed on the rod body 1, one end of the fixing block 3 can abut against the end of the reaming body 2 away from the drill bit 4, so that the reaming body 2 is stuck between the fixing block 3 and the drill bit 4, thereby fixing the reaming body 2.

[0034] In this embodiment, a plurality of reaming bodies 2 may be installed on the rod body 1, and the outer diameter of each reaming body 2 may be different, so that they may be reasonably combined according to different stepped hole sizes.

[0035] First, a drill bit 4 is arranged at the end of the rod body 1 for drilling a reference hole on the workpiece, and then the workpiece is processed by the reaming body 2 detachably arranged on the rod body 1, and the reaming body 2 is fixed by the fixed block 3.

[0036] During operation, according to the actual needs of hole processing, different sizes of reaming bodies 2 are selected and installed on the rod body 1, and then the fixing block 3 is installed on the rod body 1, and the fixing block 3 is abutted against the end of the last reaming body 2. The rod body 1 can be installed on a processing platform (such as the calipers of an electric drill) to process the stepped hole.

[0037] This technical solution can process the required stepped holes at one time, which can greatly shorten the time for processing the stepped holes.

[0038] In one specific embodiment:

[0039] The rod body 1 is provided with a plurality of threaded holes 6 along its length direction. The axes of the threaded holes 6 are perpendicular to the length direction of the rod body 1 , and the intervals between two adjacent threaded holes 6 are equal.

[0040] The fixing block 3 is detachably disposed on one of the threaded holes 6 , and one end of the fixing block 3 abuts against the end of the reamer 2 .

[0041] Specifically, the fixing block 3 is a long plate-like structure, and has a waist-shaped hole 7 on the fixing block 3. A bolt 8 is provided to pass through the waist-shaped hole 7 on the fixing block 3, and the bolt 8 is matched in the threaded hole 6, so that the fixing block 3 is detachably arranged on the rod body 1.

[0042] In this embodiment, a plurality of threaded holes 6 are provided so that the fixing block 3 can be fixed at different positions on the rod body 1. At the same time, a waist-shaped hole 7 is provided inside the fixing block 3 so that the specific position of the fixing block 3 at a threaded hole 6 can be adjusted, so that the fixing block 3 can just abut against the end of the reaming body 2.

[0043] Preferably, the length of the waist-shaped hole 7 on the fixing block 3 is greater than or equal to the distance between two adjacent threaded holes 6 , so that the fixing block 3 can completely abut against all possible positions of the end of the reaming body 2 .

[0044] In another specific embodiment:

[0045] The outer wall of the rod body 1 is provided with a limit groove 9 along its length direction, and the inner wall of the reaming body 2 has a limit block 10 matching the limit groove 9. By providing the limit groove 9 on the outer wall of the rod body 1 and the limit block 10 on the inner wall of the reaming body 2, the position of the reaming body 2 on the rod body 1 is fixed, and when the rod body 1 rotates, the reaming body 2 can be driven to rotate together.

[0046] Preferably, all threaded holes 6 are arranged in the limiting groove 9, and the width of the fixing block 3 is less than or equal to the width of the limiting groove 9, and the thickness of the fixing block 3 is less than or equal to the thickness of the reamer 2. By arranging both the threaded holes 6 and the fixing block 3 in the limiting groove 9, it is possible to prevent the fixing block 3 from protruding outside the rod body 1.

[0047] In another specific embodiment:

[0048] The rod body 1 is a polygonal columnar structure, the limiting groove 9 is located on a side surface of the rod body 1, the inside of the reamer 2 is a polygonal hole structure, and the number of faces inside the reamer 2 is equal to the number of faces outside the rod body 1. Generally, the rod body 1 is a hexagonal columnar structure, and the mounting hole 5 in the reamer 2 is a hexagonal hole structure, and the cross-sectional size of the rod body 1 is the same as the cross-sectional size of the mounting hole 5.

[0049] By configuring the rod body 1 and the mounting hole 5 to be polygonal structures, the driving force of the rod body 1 on the hole expansion body 2 can be increased.

[0050] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A reamer for machining a stepped hole, characterized in that: include: A rod body, one end of which has a tapered drill bit, the diameter of the drill bit being larger than the size of the rod body; A reamer, which has a spiral blade in its circumference, a mounting hole in the middle of the reamer along its axial direction, and the reamer can be sleeved on the rod; A fixing block is detachably mounted on the rod body, and one end of the fixing block can abut against the end of the reamer; Wherein, a plurality of the reamer bodies may be arranged on the rod body.

2. The reamer for machining a stepped hole according to claim 1, characterized in that: The rod body is provided with a plurality of threaded holes, all of which are distributed along the length direction of the rod body, and the fixing block is detachably connected to the threaded holes.

3. The reamer for machining stepped holes according to claim 2, characterized in that: The fixing block is a long strip plate-like structure, and a waist-shaped hole is provided inside the fixing block. The fixing block is detachably connected to the threaded hole by a bolt.

4. The reamer for machining a stepped hole according to claim 3, characterized in that: The outer wall of the rod body is provided with a limiting groove along its length direction, and the inner wall of the reamer body is provided with a limiting block matching the limiting groove.

5. The reamer for machining a stepped hole according to claim 4, characterized in that: All the threaded holes are located in the limiting groove, and the fixing block is also located in the limiting groove.

6. The reamer for machining a stepped hole according to claim 5, characterized in that: The thickness of the fixing block is less than or equal to the depth of the limiting groove.

7. The reamer for machining a stepped hole according to claim 6, characterized in that: The length of the waist-shaped hole on the fixing block is greater than or equal to the distance between two adjacent threaded holes.

8. The reamer for machining a stepped hole according to claim 7, characterized in that: The rod body is a polygonal columnar structure, and the limiting groove is located on a side surface of the outside of the rod body; The interior of the hole expansion body is a polygonal hole structure.

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