Telescopic center drill tool clamp

Abstract

The utility model relates to a telescopic center drill tool clamp, and belongs to the technical field of tool clamps. Comprising a knife handle body, one end of the knife handle body is a closed end, and the other end is an open end; a horizontally arranged telescopic body is inserted into the open end of the knife handle main body; a center drill is arranged in the center of an inner cavity of the telescopic body. The telescopic body can move along the inner cavity of the cutter handle main body so as to drive the center drill to move synchronously; and a limiting unit is arranged between the telescopic body and the knife handle main body and is used for limiting the extension and retraction of the telescopic body. The limiting unit comprises two limiting plates, the limiting plates are symmetrically arranged at the open end of the knife handle body, follow-up rotation preventing limiting grooves are symmetrically formed in the outer surface of the telescopic body, the limiting plates are arranged in the corresponding follow-up rotation preventing limiting grooves, and the limiting plates are matched with the follow-up rotation preventing limiting grooves. Under the working condition that the surface of a part is uneven, automatic hole drilling machining of a numerical control machine tool can be met, and the machining efficiency and the machining quality are improved.

Description

Technical Field

[0001] The utility model relates to a telescopic center drill tool fixture, belonging to the technical field of tool fixtures. Background Art

[0002] Wind power casting parts are heavy parts. There are many small screw holes on the surface of the casting. When processing the screw holes on the blank surface of wind power casting parts, the blank is a non-processed surface with large unevenness, so the CNC machine tool cannot automatically point the holes. It is necessary to manually operate the machine tool handwheel to point the screw holes. In this way, the machine tool needs to be frequently operated one by one each time, which is very time-consuming and has low processing efficiency.

[0003] A large number of screw holes need to be manually positioned on the blank surface. Because the equipment needs to be manually operated, operational errors often occur, resulting in frequent quality problems such as screw hole diameter exceeding the tolerance. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a retractable center drill tool fixture for the above-mentioned prior art, which can meet the needs of automatic hole-point processing of CNC machine tools under the working condition that the surface of the parts is uneven, thereby improving the processing efficiency and processing quality.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a retractable center drill tool fixture, including a handle body, one end of the handle body is a closed end, and the other end is an open end; a horizontally arranged retractable body is inserted into the open end of the handle body; a center drill is arranged at the center of the inner cavity of the retractable body; the retractable body can move along the inner cavity of the handle body, thereby driving the center drill to move synchronously; a limiting unit is provided between the retractable body and the handle body, and the limiting unit limits the extension and retraction of the retractable body.

[0006] The limit unit includes two limit plates, which are symmetrically arranged at the open end of the handle body. The outer surface of the telescopic body is symmetrically provided with anti-heel rotation limit grooves, and the limit plates are arranged in the corresponding anti-heel rotation limit grooves, and the limit plates cooperate with the anti-heel rotation limit grooves.

[0007] An elastic member is arranged between the handle body and the telescopic body, one end of the elastic member abuts against the inner wall of the closed end of the handle body, and the other end of the elastic member abuts against one end of the telescopic body.

[0008] The elastic member is a spring.

[0009] The center drill is fixed in the telescopic body by symmetrically arranged locking screws.

[0010] Compared with the prior art, the utility model has the following advantages: a retractable center drill tool fixture, when encountering uneven surface of the point hole, the point hole range is adjusted by the compression of the spring, and the expansion range of the spring is ±15mm, which can meet the requirements of automatic positioning of the point hole within the range of 30mm for the uneven surface of the casting blank, saving time and effort, and improving the processing efficiency and processing quality. When the center drill is worn and damaged, the locking screw is loosened, and the center drill is replaced, so that the fixture can be used multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of a retractable center drill tool fixture according to an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A front view of

[0013] Figure 3 for Figure 2 A cross-sectional view of

[0014] In the figure, 1 is the handle body, 2 is the telescopic body, 3 is the center drill, 4 is the anti-rotation limit groove, 5 is the limit plate, 6 is the locking screw, and 7 is the spring. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] like Figure 1 , 2 As shown in Figures 3 and 4, a retractable center drill tool fixture in this embodiment includes a handle body 1, one end of the handle body 1 is a closed end, and the other end is an open end. A horizontally arranged telescopic body 2 is inserted into the open end of the handle body 1; a horizontally arranged center drill 3 is passed through the center of the inner cavity of the telescopic body 2, and the center drill 3 is fixed in the telescopic body 2 by symmetrically arranged locking screws 6. A horizontally arranged elastic member is provided between the handle body 1 and the telescopic body 2, one end of the elastic member abuts against the inner wall of the closed end of the handle body, and the other end of the elastic member abuts against one end of the telescopic body. The telescopic body can move along the inner cavity of the handle body, thereby compressing the elastic member; or the resetting of the elastic member drives the resetting of the telescopic body, thereby driving the center drill to move synchronously. A limiting unit is provided between the telescopic body and the handle body, and the limiting unit limits the extension and retraction of the telescopic body.

[0017] The limiting unit includes two limiting plates 5, which are symmetrically arranged at the open end of the handle body 1. The outer surface of the telescopic body is symmetrically provided with anti-heel rotation limiting grooves 4, and the limiting plates 5 are arranged in the corresponding anti-heel rotation limiting grooves 4, and the limiting plates cooperate with the anti-heel rotation limiting grooves.

[0018] The elastic member is a spring 7 .

[0019] When the surface of the point hole is uneven, the point hole range can be adjusted by compressing the spring. The expansion range of the spring is ±15mm, which can meet the requirements of automatic positioning of the point hole within 30mm of the uneven surface of the casting blank, saving time and effort, and improving processing efficiency and processing quality. When the center drill is worn and damaged, loosen the locking screw and replace the center drill to achieve multiple uses of the fixture.

[0020] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A retractable center drill tool fixture, characterized in that: It includes a handle body, one end of the handle body is a closed end, and the other end is an open end; a horizontally arranged telescopic body is inserted into the open end of the handle body; a center drill is arranged at the center of the inner cavity of the telescopic body; the telescopic body can move along the inner cavity of the handle body, thereby driving the center drill to move synchronously; a limiting unit is provided between the telescopic body and the handle body, and the limiting unit limits the extension and retraction of the telescopic body.

2. The retractable center drill tool fixture according to claim 1, characterized in that: The limit unit includes two limit plates, which are symmetrically arranged at the open end of the handle body. The outer surface of the telescopic body is symmetrically provided with anti-heel rotation limit grooves, and the limit plates are arranged in the corresponding anti-heel rotation limit grooves, and the limit plates cooperate with the anti-heel rotation limit grooves.

3. The retractable center drill tool fixture according to claim 1, characterized in that: An elastic member is arranged between the handle body and the telescopic body, one end of the elastic member abuts against the inner wall of the closed end of the handle body, and the other end of the elastic member abuts against one end of the telescopic body.

4. The retractable center drill tool fixture according to claim 3, characterized in that: The elastic member is a spring.

5. The retractable center drill tool fixture according to claim 1, characterized in that: The center drill is fixed in the telescopic body by symmetrically arranged locking screws.

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