Floating rose reamer

Abstract

The utility model discloses a floating rose reamer which comprises a reamer handle, a reamer rod, a spring and a locating pin, the reamer rod is arranged on the reamer handle in a sliding mode, the spring is arranged on the reamer handle in a sleeved mode, one end of the spring is connected with the reamer handle, the other end of the spring is connected with the reamer rod, and the locating pin is arranged on the reamer rod and the reamer handle in an inserted mode. Relative rotation between the cutter bar and the cutter handle is prevented. According to the chamfering device, when a blank workpiece is chamfered, a machine tool drives the chamfering tool to move to a machining position and drives the chamfering tool to rotate at a high speed, when the chamfering tool makes contact with the surface of the workpiece, due to the fact that the surface of the workpiece is uneven, stress is possibly not uniform enough when the tool bar makes contact with the workpiece, and in order to avoid damage to the chamfering tool, the chamfering tool is not damaged. The cutter bar is arranged on the cutter handle in a sliding mode, and the spring can provide pressing force for the cutter bar, so that the cutter bar can conduct machining smoothly, meanwhile, the cutter bar can be stressed evenly, and the cutter is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of chamfering cutters, in particular to a floating chamfering cutter. Background Art

[0002] A chamfering cutter, also known as a countersink, can be used to deburr, chamfer, and countersink holes. The prerequisite is that there must be a guide hole before subsequent processing can be performed. The tapered tapered hole is larger at the top and smaller at the bottom. Therefore, when performing chamfering, it is first necessary to drill a hole on the workpiece, and then use a chamfering cutter to chamfer the edge of the hole. However, since the chamfering cutter is rigid, it cannot be adjusted according to the actual situation when in contact with the workpiece, causing collision between the chamfering cutter and the workpiece. When processing precision workpieces, the workpiece surface is relatively flat and smooth, and the contact process between the chamfering cutter and the workpiece is relatively slow. The chamfering cutter is evenly stressed, and the impact on the chamfering cutter is small. However, when processing blank workpieces, due to the uneven surface of the workpiece, the chamfering cutter is unevenly stressed when in contact with the workpiece, which can easily cause damage to the chamfering cutter. Utility Model Content

[0003] The purpose of the utility model is to provide a floating chamfering cutter to address the deficiencies of the above-mentioned prior art.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A floating chamfering tool comprises a tool handle;

[0006] A knife bar is slidably arranged on the knife handle;

[0007] The spring is sleeved on the knife handle, with one end connected to the knife handle and the other end connected to the knife rod;

[0008] The positioning pin is inserted into the tool rod and the tool handle.

[0009] Preferably, a shell is provided on the knife handle.

[0010] Preferably, the housing and the handle are interference fit.

[0011] Preferably, a limit platform is provided on the knife handle, and one end of the spring is connected to the limit platform.

[0012] Preferably, the knife rod is provided with a knife head, and a blade is fixedly mounted on the knife head.

[0013] Preferably, a sliding hole is provided on the knife rod, the knife handle is slidably arranged in the sliding hole, a blocking cover is provided in the sliding hole, and the blocking cover and the knife handle are connected by screws.

[0014] Preferably, a limiting ring is fixedly provided on one end of the knife rod, and the spring is located in the limiting ring.

[0015] Preferably, a sliding groove is provided on the knife rod, and the positioning pin is located in the sliding groove.

[0016] The beneficial effects of adopting the above technical solution are:

[0017] In the present invention, the tool handle is connected to the machine tool, and the machine tool drives the tool handle to move to chamfer the workpiece. The tool rod is slidably arranged on the tool handle so that the tool rod can slide in the axial direction. When the surface of the workpiece is uneven, the tool rod slides a small distance on the tool handle so that the chamfering tool is subjected to more uniform force, thereby avoiding damage to the chamfering tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the present utility model.

[0020] In the figure: 1 is the handle, 2 is the tool rod, 3 is the spring, 4 is the positioning pin, 5 is the shell, 6 is the limit table, 7 is the tool head, 8 is the blade, 9 is the blocking cover, 10 is the screw, 11 is the limit ring, and 12 is the slide groove. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, a floating chamfering tool comprises a tool handle 1, a tool rod 2, a spring 3 and a positioning pin 4. A sliding hole is provided in the middle of the tool rod 2, and the sliding hole and the tool rod 2 are coaxially arranged. The tool handle 1 is inserted in the sliding hole, and the tool rod 2 is slidably arranged on the tool handle 1. A limit platform 6 is fixed on the tool handle 1, and the limit platform 6 is coaxially arranged with the tool handle 1. The spring 3 is sleeved on the tool handle 1, and one end of the spring 3 abuts against the limit platform 6, and the other end abuts against one end of the tool rod 2. A cutter head 7 is fixedly provided on the end of the tool rod 2 away from the spring 3, and a blade 8 is fixedly welded on the tool head 7 for chamfering chip processing. A positioning pin 4 is connected between the tool handle 1 and the tool rod 2, and the positioning pin 4 is used to prevent relative rotation between the tool handle 1 and the tool rod 2. In the present invention, the tool handle 1 is connected to the machine tool, and the machine tool drives the tool handle 1 to move so as to chamfer the workpiece. When the chamfering cutter moves to the position to be processed, the machine tool drives the chamfering cutter to rotate at high speed until the end of the tool rod 2 with the blade 8 is close to the workpiece. When the blade 8 contacts the workpiece, the blade 8 can chamfer the workpiece. When the surface of the workpiece is uneven, the tool rod 2 can be extended and retracted along the axial direction of the tool handle 1, and the spring 3 can provide a pressing force to the tool rod 2 so that the blade 8 is always in contact with the surface of the workpiece to chamfer the workpiece. Because the tool rod 2 can slide along the tool handle 1, the blade 8 can be subjected to more uniform force during the processing, avoiding damage to the blade 8 and playing a role in protecting the tool. The locating pin 4 can prevent relative rotation between the tool rod 2 and the tool handle 1, so that the blade 8 can cut the workpiece normally.

[0025] Furthermore, the handle 1 is covered with a housing 5. The housing 5 and the handle 1 have an interference fit, preventing relative rotation between the handle 1 and the housing 5 during high-speed rotation, which could cause the housing 5 to change position. The housing 5 covers the exterior of the locating pin 4, preventing the locating pin 4 from being thrown out of the handle 1 and the shank 2 during high-speed rotation. A certain gap is left between the housing 5 and the shank 2. The housing 5 prevents large debris from entering the housing 5 and affecting the relative sliding between the shank 2 and the handle 1.

[0026] Furthermore, the sliding hole passes through the shank 2 and the cutter head 7, the blade 8 is fixedly welded to the outer wall of the cutter head 7, a stop cover 9 is provided in the sliding hole, the stop cover 9 and the shank 1 are connected by a screw 10, the stop cover 9 is in contact with the shank 2, and the stop cover 9 can limit the shank 2 to a certain extent.

[0027] Furthermore, a limit ring 11 is fixedly provided at one end of the knife rod 2, and the spring 3 is located in the limit ring 11. A certain distance is left between the upper end surface of the limit ring 11 and the limit platform 6, so that the knife rod 2 can slide on the knife handle 1.

[0028] Furthermore, a positioning hole is provided on the tool handle 1, and the diameter of the positioning hole is the same as the diameter of the positioning pin 4. The positioning pin 4 is inserted in the positioning hole, and a slide groove 12 is provided on the tool rod 2. The slide groove 12 is a long strip structure, and the length direction of the slide groove 12 is the same as the length direction of the tool rod 2, and the width of the slide groove 12 is the same as the diameter of the positioning pin 4. The length of the slide groove 12 is greater than the diameter of the positioning pin 4, and the positioning pin 4 is located in the slide groove 12 and slides in the slide groove 12. Therefore, in this embodiment, when the chamfering knife rotates, since the diameter of the positioning hole and the width of the slide groove 12 are the same as the diameter of the positioning pin 4, there will be no relative rotation between the tool rod 2 and the tool handle 1, and the length of the slide groove 12 is greater than the diameter of the positioning pin 4. Therefore, when the tool rod 2 slides along the length direction of the tool handle 1, the positioning pin 4 will also slide in the slide groove 12, and the slide groove 12 will not cause any obstruction.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating chamfering cutter, characterized in that: comprising a knife handle (1); A knife rod (2) is slidably arranged on the knife handle (1); A spring (3) is sleeved on the knife handle (1), one end of which is connected to the knife handle (1) and the other end of which is connected to the knife rod (2); The positioning pin (4) is inserted into the knife rod (2) and the knife handle (1).

2. The floating chamfering cutter according to claim 1, characterized in that: The knife handle (1) is sleeved with a shell (5).

3. The floating chamfering cutter according to claim 2, characterized in that: The housing (5) and the knife handle (1) are interference-fitted.

4. The floating chamfering cutter according to claim 1, characterized in that: A limiting platform (6) is provided on the knife handle (1), and one end of the spring (3) is connected to the limiting platform (6).

5. The floating chamfering cutter according to claim 1, characterized in that: The knife rod (2) is provided with a knife head (7), and a knife blade (8) is fixedly mounted on the knife head (7).

6. The floating chamfering cutter according to claim 5, characterized in that: The knife rod (2) is provided with a sliding hole extending therethrough, the knife handle (1) is slidably arranged in the sliding hole, a blocking cover (9) is provided in the sliding hole, and the blocking cover (9) and the knife handle (1) are connected via a screw (10).

7. The floating chamfering cutter according to claim 1, characterized in that: A limiting ring (11) is fixedly provided at one end of the knife rod (2), and the spring (3) is located inside the limiting ring (11).

8. The floating chamfering cutter according to claim 1, characterized in that: A sliding groove (12) is provided on the knife rod (2), and the positioning pin (4) is located in the sliding groove (12).

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