Reamer convenient to clamp and used for inner hole forming

Abstract

The utility model belongs to the technical field of reamers, particularly relates to a conveniently-clamped reamer for forming an inner hole, and aims to solve the problems that the drilling depth of the reamer cannot be limited when the conventional reamer is used, for example, when the reamer is excessively inserted into the hole, the depth of the hole is increased, and the subsequent use of the hole is influenced, the following scheme is provided: the conveniently-clamped reamer comprises a fixed reamer handle, a forming mechanism used for machining a workpiece is fixed to the lower surface of the fixed cutter handle, and a limiting mechanism used for limiting a reamer is arranged on the outer surface of the fixed cutter handle. The limiting mechanism comprises a limiting ring, the limiting ring is arranged on the outer surface of the fixed cutter handle in a sleeving mode, and two adjusting rods are symmetrically fixed to the upper surface of the limiting ring. The length of the reamer body inserted into the inner hole is limited, and the depth of the inner hole is prevented from changing.

Description

Technical Field

[0001] The utility model relates to a reamer for internal hole forming, in particular to a reamer for internal hole forming which is convenient to clamp, belonging to the technical field of reamers. Background Art

[0002] Reamers for internal hole forming can be divided into various types according to their materials, structures and uses, such as high-speed steel reamers, cemented carbide reamers, diamond reamers, etc. These reamers usually have straight shanks or taper shanks, and the blade parts are designed into different shapes and angles according to different processing requirements. Some reamers have multiple cutting edges to improve processing efficiency and accuracy; some adopt adjustable designs to adapt to internal hole processing of different sizes.

[0003] In the prior art, as disclosed in a reamer for internal hole forming which is convenient to clamp with the publication number of CN215034140U, it includes a reamer body, the reamer body includes a reamer cutter body and a reamer shaft body, the reamer cutter body is arranged at the bottom of the reamer shaft body, a limiting block is arranged on the outer wall of the lower side of the reamer shaft body, and a rubber pad is bonded under the limiting block. It installs the reamer body on a hand drill to ream an object. Since a certain force is required for the staff to rotate the handle during reaming to drive the reamer body to move downwards so that the reamer cutter body can smoothly ream, when a through hole is reamed on the object, the force required on the handle is greatly reduced. If the staff does not timely withdraw the previous thrust and causes the handle to rotate greatly, when the reamer body moves downwards excessively, it contacts the object through the baffle to play a hindering role, and the rubber pad can buffer and absorb shock, thereby avoiding damage to the end of the reamer clamped on the hand drill or the object.

[0004] Although the above technical solution can buffer and absorb shock through the rubber pad to avoid damage to the end of the reamer clamped on the hand drill or the object, it cannot limit the depth of the reamer drilling during use. For example, when the reamer is inserted too deep into the hole, it will cause the depth of the hole to increase, affecting the subsequent use of the hole. In view of this, a reamer for internal hole forming which is convenient to clamp is provided to overcome the above defects. Summary of the Utility Model

[0005] The utility model provides a reamer for internal hole forming which is convenient to clamp to solve the problem that the depth of the reamer drilling cannot be limited during use. For example, when the reamer is inserted too deep into the hole, it will cause the depth of the hole to increase, affecting the subsequent use of the hole.

[0006] The utility model realizes the above purpose through the following technical solutions: a reamer for internal hole forming which is convenient to clamp, including a fixed tool handle, a forming mechanism for processing a workpiece is fixed on the lower surface of the fixed tool handle, and a limiting mechanism for limiting the reamer is arranged on the outer surface of the fixed tool handle;

[0007] The limiting mechanism includes a limiting ring which is sleeved on the outer surface of the fixed tool shank. Two adjusting rods are symmetrically fixed on the upper surface of the limiting ring. The upper ends of the two adjusting rods are telescopically connected with mounting tubes, and a plurality of limiting balls are mounted on the lower surface of the limiting ring.

[0008] As a further scheme of the present utility model: A limiting block fixed to the adjusting rod is slidably connected inside the mounting tube.

[0009] As a further scheme of the present utility model: A limiting bolt is mounted on the outer surface of the mounting tube, and the end of the limiting bolt is in abutting connection with the outer surface of the adjusting rod.

[0010] As a further scheme of the present utility model: The forming mechanism includes a reamer body which is fixed to the lower surface of the fixed tool shank, and chip removal grooves are formed on the outer surface of the reamer body.

[0011] As a further scheme of the present utility model: Two mounting grooves are formed at the lower end of the reamer body. Blade bodies are mounted inside the two mounting grooves, and fixing screws threadedly connected to the reamer body are mounted inside the blade bodies.

[0012] As a further scheme of the present utility model: A connecting member is connected to the upper end of the fixed tool shank, and a fixing bolt in abutting connection with the fixed tool shank is mounted on the outer surface of the connecting member.

[0013] As a further scheme of the present utility model: A connecting rod is fixed to the upper end inside the connecting member, and the connecting rod is inserted and connected to a connecting hole formed in the fixed tool shank below.

[0014] The beneficial effects of the present utility model are as follows: By vertically pulling the limiting ring, the position of the limiting ring is adjusted, and the limiting bolt is tightened to fix the adjusting rod, thereby limiting the length of the reamer body inserted into the inner hole and avoiding milling the depth of the inner hole; The inner hole of the workpiece is milled by the blade body on the mounting groove, and by unscrewing the fixing screw, the blade body can be disassembled, which is convenient for replacing the blade body. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a sectional structural schematic diagram of the limiting ring of the present utility model;

[0017] Figure 3 is the present utility model Figure 1 The enlarged view at A in;

[0018] Figure 4This is a schematic cross-sectional structure diagram of the connecting piece of the utility model.

[0019] In the figure: 1, fixed tool handle; 2, reamer body; 21, chip removal groove; 22, installation groove; 23, blade body; 24, fixing screw; 3, limit ring; 31, adjusting rod; 32, installation pipe; 33, limit block; 34, limit bolt; 35, limit ball; 4, connecting piece; 5, fixing bolt; 6, connecting rod; 7, connecting hole. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0021] As Figures 1 to 4 shown, a reamer for facilitating clamping in internal hole forming includes a fixed tool handle 1. A forming mechanism for machining a workpiece is fixed on the lower surface of the fixed tool handle 1. A limiting mechanism for limiting the reamer is arranged on the outer surface of the fixed tool handle 1;

[0022] The limiting mechanism includes a limit ring 3. The limit ring 3 is sleeved on the outer surface of the fixed tool handle 1. Two adjusting rods 31 are symmetrically fixed on the upper surface of the limit ring 3. The upper ends of the two adjusting rods 31 are telescopically connected with an installation pipe 32. A plurality of limit balls 35 are installed on the lower surface of the limit ring 3. A limit block 33 fixed to the adjusting rod 31 is slidably connected inside the installation pipe 32. A limit bolt 34 is installed on the outer surface of the installation pipe 32. The end of the limit bolt 34 abuts against the outer surface of the adjusting rod 31. When machining internal holes of different depths, first loosen the limit bolt 34 on the installation pipe 32 to release the fixation of the adjusting rod 31. In this way, the limit ring 3 can be pulled vertically, and then the position of the limit ring 3 can be adjusted. And the arranged limit block 33 can prevent the adjusting rod 31 from being pulled too much and falling off, so that the length of the reamer body 2 that can penetrate into the internal hole changes. After the adjustment is completed, tighten the limit bolt 34 to fix the adjusting rod 31, and then limit the length of the reamer body 2 inserted into the internal hole to prevent the depth of the internal hole from being milled. And the limit balls 35 at the lower end of the limit ring 3 can rotate after contacting the upper surface of the workpiece, so as to ensure that the workpiece will not be displaced when the limit ring 3 is driven by the machine tool, improving the stability. Embodiment 2

[0023] In addition to including all the technical features in the first embodiment, this embodiment further includes: The forming mechanism includes a reamer body 2, the reamer body 2 is fixed on the lower surface of the fixed tool handle 1, a chip discharge groove 21 is formed on the outer surface of the reamer body 2, two installation grooves 22 are formed at the lower end of the reamer body 2, a blade body 23 is installed inside each of the two installation grooves 22, a fixing screw 24 threadedly connected to the reamer body 2 is installed inside each blade body 23, a connecting member 4 is connected to the upper end of the fixed tool handle 1, a fixing bolt 5 abutted and connected to the fixed tool handle 1 is installed on the outer surface of the connecting member 4, a connecting rod 6 is fixed at the upper end inside the connecting member 4, a connecting hole 7 formed on the fixed tool handle 1 is inserted and connected below the connecting rod 6. By aligning the connecting hole 7 on the fixed tool handle 1 with the connecting rod 6 inside the connecting member 4, then inserting the fixed tool handle 1 into the connecting member 4, and tightening the fixing bolt 5, the end of the fixing bolt 5 contacts the outer wall of the fixed tool handle 1, thereby fixing the fixed tool handle 1 to complete the assembly. During use, the reamer is driven by a machine tool to operate and process the workpiece. Through the chip discharge groove 21 formed on the reamer body 2, it is convenient to discharge the chips generated during processing. Through the blade body 23 on the installation groove 22, the inner hole of the workpiece is milled. And by unscrewing the fixing screw 24, the blade body 23 can be disassembled, which is convenient for replacing the blade body 23.

[0024] Working principle: Before using the reamer for internal hole forming that is convenient to clamp, first assemble it. The set connecting member 4 is fixed to the output shaft of the machine tool. By aligning the connecting hole 7 on the fixed tool handle 1 with the connecting rod 6 inside the connecting member 4, then inserting the fixed tool handle 1 into the connecting member 4, and tightening the fixing bolt 5, the end of the fixing bolt 5 contacts the outer wall of the fixed tool handle 1, thereby fixing the fixed tool handle 1 to complete the assembly. During use, the reamer is driven by a machine tool to operate and process the workpiece. Through the chip discharge groove 21 formed on the reamer body 2, it is convenient to discharge the chips generated during processing. Through the blade body 23 on the installation groove 22, the inner hole of the workpiece is milled. And by unscrewing the fixing screw 24, the blade body 23 can be disassembled, which is convenient for replacing the blade body 23. When processing internal holes with different depths, first loosen the limit bolt 34 on the installation pipe 32 to release the fixation of the adjusting rod 31. In this way, the limit ring 3 can be pulled vertically, thereby adjusting the position of the limit ring 3. And the set limit block 33 can prevent the adjusting rod 31 from being pulled too much and falling off, so that the length of the reamer body 2 that can penetrate into the inner hole changes. After the adjustment is completed, tighten the limit bolt 34 to fix the adjusting rod 31, thereby restricting the length of the reamer body 2 inserted into the inner hole and preventing the depth of the inner hole from being milled. And the limit ball 35 at the lower end of the limit ring 3 can rotate after contacting the upper surface of the workpiece, thereby ensuring that the limit ring 3 will not drive the workpiece to displace when driven by the machine tool, improving the stability.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reamer for internal hole forming that is convenient for clamping, comprising a fixed tool handle (1), characterized in that: A forming mechanism for machining a workpiece is fixed to the lower surface of the fixed tool shank (1), and a limiting mechanism for limiting a reamer is arranged on the outer surface of the fixed tool shank (1); The limiting mechanism includes a limiting ring (3), the limiting ring (3) is sleeved on the outer surface of the fixed tool shank (1), two adjusting rods (31) are symmetrically fixed to the upper surface of the limiting ring (3), the upper ends of the two adjusting rods (31) are telescopically connected with mounting tubes (32), and a plurality of limiting balls (35) are mounted on the lower surface of the limiting ring (3).

2. The reamer for internal hole forming that is easy to clamp according to claim 1, characterized in that: A limiting block (33) fixed to the adjusting rod (31) is slidably connected inside the mounting tube (32).

3. The reamer for internal hole forming that is easy to clamp according to claim 2, wherein: A limiting bolt (34) is mounted on the outer surface of the mounting tube (32), and the end of the limiting bolt (34) is in abutting connection with the outer surface of the adjusting rod (31).

4. A reamer for internal hole forming that is easy to clamp according to claim 1, characterized in that: The forming mechanism includes a reamer body (2), the reamer body (2) is fixed to the lower surface of the fixed tool shank (1), and chip removal grooves (21) are formed in the outer surface of the reamer body (2).

5. The reamer for internal hole forming that is easy to clamp according to claim 4, wherein: Two mounting grooves (22) are formed in the lower end of the reamer body (2), blade bodies (23) are mounted inside the two mounting grooves (22), and fixing screws (24) threadedly connected with the reamer body (2) are mounted inside the blade bodies (23).

6. The reamer for internal hole forming that is easy to hold according to claim 1, wherein: An upper end of the fixed tool shank (1) is connected with a connecting piece (4), and a fixing bolt (5) abutting against the fixed tool shank (1) is mounted on the outer surface of the connecting piece (4).

7. The reamer for internal hole forming that is easy to hold according to claim 6, characterized in that: An upper end inside the connecting piece (4) is fixed with a connecting rod (6), and the connecting rod (6) is inserted and connected with a connecting hole (7) formed in the fixed tool shank (1) below.

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