CN215967493U

CN215967493U - Drilling tool with positioning and clamping functions

Info

Publication number: CN215967493U
Application number: CN202121311920.7U
Authority: CN
Inventors: 李蒙江; 乐淑玲; 朱健; 李保健; 查茂华
Original assignee: Jiangxi Changhe Aviation Industries Co Ltd
Current assignee: Jiangxi Changhe Aviation Industries Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-03-08
Anticipated expiration: 2031-06-11

Abstract

The utility model belongs to the manufacturing technology of airplane clamps, and particularly relates to a drilling tool with positioning and clamping functions. The manual drilling of the qualified positioning holes requires operators to have higher skill level, processing experience and hand feeling, and the factors cause the positioning holes processed by the operators at different levels to have inconsistent precision. The matched drilling tool is used for processing coaxial holes of two parts which are matched and positioned, and comprises a clamp body, a quick-change drill bushing, a set screw, a movable pressing block and a movable handle, wherein the clamp body is respectively provided with a guide sleeve and a nut at two ends; the quick-change drill bushing is placed in the guide sleeve; the guide sleeve, the nut, the quick-change drill bush and the set screw are coaxial. The hole diameter of the matched hole and the verticality requirement of the axis of the hole and a joint surface can be well ensured.

Description

Drilling tool with positioning and clamping functions

Technical Field

The utility model belongs to the manufacturing technology of airplane clamps, and particularly relates to a drilling tool with positioning and clamping functions.

Background

In the manufacturing process of the aircraft clamp, a large number of positioning elements need to be adjusted, in fig. 1, the positioning element 9 is usually combined with the support 7 to be used for rooting on a clamping plate or a frame, and for convenience of disassembly, the positioning element 9 and the support 7 are usually installed in a positioning pin connection mode. In the adjusting process of the fixture, in order to quickly adjust the positioning element 9 to the theoretical position, the positioning hole 8 between the positioning element 9 and the support 7 is usually machined by means of drilling.

In the traditional fixture manufacturing process, a positioning hole between a positioning piece 9 and a support 7 is generally configured by an installer manually, the positioning piece 9 and the support 7 are firstly adjusted to a theoretical position on a fixture, then the positioning piece 9 and the support 7 are firmly spot-welded, then the positioning piece 9 and the support 7 are taken down together to drill and ream a positioning hole 8 on a vice, a welding spot is polished completely after the positioning hole 8 is processed, and finally a positioning pin is inserted to be installed back on the fixture, so that the installation accuracy of the positioning piece 9 in a clamping plate or a frame is ensured.

However, in the actual drilling process, the phenomenon that the axis of the matched hole is not perpendicular to the joint surface often occurs, which is caused by different skill levels of operators, the manual drilling of the qualified positioning hole requires the operators to have higher skill level, processing experience and hand feeling, the precision of the positioning hole processed by the operators at different levels is inconsistent due to the factors, and if the diameter of the positioning hole is too large or the axis of the hole is not perpendicular to the joint surface, the abrasion of the positioning hole is accelerated, so that the positioning piece shakes; secondly, the axis of the positioning pin is not perpendicular to the joint surface, when one positioning pin is pulled out to enable the positioning element to exit from the positioning state, the positioning element is clamped in the positioning hole by the other positioning pin (the hole axis is not perpendicular to the joint surface), so that the opening and closing process of the positioning element in the support notch is very tight, and the positioning accuracy of the positioning element in the fixture is affected.

For this reason, it is necessary to find an effective machining method to guarantee the dimensional accuracy of the counter-drilled holes, without being limited by the skill level of the operator.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows: the utility model aims to provide a drilling tool with positioning and clamping functions, so as to solve the problem of unsatisfactory machining precision of part drilling provided by the background technology.

The technical scheme of the utility model is as follows: the tool comprises a clamp body, a quick-change drill bushing, a set screw, a movable pressing block and a movable handle, wherein the clamp body is respectively provided with a guide sleeve and a nut at two ends, the set screw is in threaded connection with the nut, the outer end of the set screw is connected with the movable handle, and the inner end of the set screw is connected with the movable pressing block; the quick-change drill bushing is placed in the guide sleeve; the guide sleeve, the nut, the quick-change drill bush and the set screw are coaxial.

Further, a guide hole is formed in the quick-change drill bushing and is coaxial with the guide sleeve.

Furthermore, the C-shaped block is welded with the guide sleeve and the nut into a whole.

Further, the quick-change drill bushing has multiple specifications.

Further, the movable handle is clearance-fitted with the set screw and has enlarged-sized portions at both ends.

Furthermore, the movable pressing block is provided with a hole facing the end face of the guide sleeve, and the end face facing the set screw is provided with a mounting hole for accommodating the connector of the set screw.

The utility model has the beneficial effects that: compared with the prior art, the tool disclosed by the utility model is used for processing the matched drilling hole of the part, and the aperture size of the matched drilling hole and the verticality requirement of the hole axis and the joint surface can be well ensured. Firstly, clamping a to-be-processed surface of a part matched drill hole on the end surface of a guide sleeve by rotating a set screw to ensure that an inner hole of the guide sleeve is vertical to the to-be-processed surface, putting quick-change drill sleeves with different specifications into the guide sleeve, performing primary hole processing on the matched drill hole by using a drill bit by utilizing the guiding action of the inner hole of the drill sleeve, and then performing finish processing on the matched drill hole by using a reamer. The machining requirements of the matched drill holes with different sizes can be met only by replacing the quick-change drill bushing. The tool has the characteristics of simple and reasonable structure, convenient and quick operation, is particularly suitable for processing the matched drill holes on the clamp positioning piece, can well ensure the processing precision of the matched drill holes, and has remarkable use effect.

Drawings

The illustrative examples, as well as a preferred mode of use, further objectives, and descriptions thereof, will best be understood by reference to the following detailed description of an example of the present invention when read in conjunction with the accompanying drawings, wherein:

fig. 1 is a schematic diagram of a typical operating state of the present invention.

Fig. 2 is a sectional structural view of the positioning assembly of the present invention.

Fig. 3 is a cross-sectional structural view of the hold-down assembly of the present invention.

The reference numbers of the components in the drawings are as follows: 1-a clamp body; a 101-C type block; 102-a guide sleeve; 103-a nut; 2, quickly changing a drill bushing; 3-tightening the screw; 4-movable briquetting; 5-a movable handle; 6-a guide hole; 7, a support; 8-positioning holes; 9-locating piece

Detailed Description

The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. Indeed, many different examples may be described and should not be construed as limited to the examples set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In order to make the objects, advantages and functions of the present invention more clearly understood, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings in the exemplary embodiments of the present invention.

Referring to fig. 1, 2 and 3, a drilling tool with positioning and clamping functions includes a clamp body 1, a quick-change drill bushing 2, a set screw 3, a movable press block 4 and a movable handle 5, wherein a guide sleeve 102 and a nut 103 are fixedly connected to two ends of the clamp body 1. The clamp body is formed by welding a C-shaped block 101, a guide sleeve 102 and a nut 103.

The guide sleeve 102 is internally provided with a quick-change drill bushing 2, the outer diameter of the quick-change drill bushing 2 is in clearance fit with the inner diameter of the guide sleeve 102, and the basic sizes are the same; the inner diameter of the quick-change drill bushing 2 has various specifications so as to adapt to the processing of matched drill holes with different aperture requirements.

Set screw 3 is installed in nut 103, and set screw 3 front end is the circular arc design, and rotatory set screw 3 can freely stretch out and draw back in nut 103.

The movable pressing block 4 is installed at the front end of the holding screw 3, a drill bit is arranged on the contact surface of the movable pressing block 4 and the part to open a hole, the movable pressing block 4 can freely move after being screwed into the front end of the holding screw 3, the movable pressing block is matched with the end face of the guide sleeve 102 to play a role in automatically leveling the surface of the part when the part is clamped, and a binding face does not generate a gap when the part is clamped.

The tail end of the set screw 3 is provided with a movable handle 5 for holding the set screw 3 to rotate to enter and exit the nut 103.

The working principle of the utility model is as follows: fig. 1 is a typical embodiment of the present invention, in which two sets of positioning holes 8 are required to be disposed between a positioning member 9 and a support 7 and connected by positioning pins, so that the positioning member can be quickly detached during use. It should be noted here that one of the positioning pins is fixed in the positioning hole and is not used as a quick release pin, and the other positioning pin is a quick release pin and plays a positioning role during insertion; when the locating piece is pulled out, the locating piece can be ensured to be rapidly withdrawn from the locating state when not in work, and the locating piece can be kept on the support so as to be convenient for reuse.

The utility model can well solve the adverse effect caused by manual matching of the drill holes when matching the drill holes. The specific operation is as follows: the positioning element and the support are aligned by means of the end face of the guide sleeve 102 and the end face of the movable press block 4

The surface to be processed is positioned, the set screw 3 is screwed into the nut 103 by holding the movable handle 5 by hand to clamp the part to be processed, then the clamped part is fixed by a vice, a drill bit is introduced into an inner hole of the quick-change drill bushing 2 for drilling (the inner diameter of the quick-change drill bushing 2 is consistent with the outer diameter of the drill bit, and the axis of the inner hole of the quick-change drill bushing 2 is perpendicular to the end surface of the guide sleeve 102), different specifications of quick-change drill bushings 2 are matched for matched drill holes of different specifications, a quick-change drill bushing 2 of three specifications is matched for each specification of matched drill hole, a primary hole drill bushing, a final hole drill bushing and a reaming drill bushing can be arranged according to the drilling and reaming sequence, the guide function of the quick-change drill bushing 2 and the inner diameter matched with the drill bit and the reaming bit can play a role in auxiliary positioning, the circular runout of the drill bit during drilling can be reduced, and the aperture common size of the positioning hole 8 is ensured to be within a tolerance range.

Different examples of the systems, devices, and methods disclosed herein include various components, features, and functions. It should be understood that the various examples of the systems, devices, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of the systems, devices, and methods disclosed herein in any combination or sub-combination, and all such possibilities are intended to fall within the scope of the present invention.

The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, the different advantageous examples may describe different advantages as compared to other advantageous examples. The example or examples selected are chosen and described in order to best explain the principles of the examples, the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various examples with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a join in marriage drilling tool with location, clamping function for carry out coaxial spot facing work to two parts of cooperation location, its characterized in that: the tool comprises a clamp body (1), a quick-change drill bushing (2), a set screw (3), a movable pressing block (4) and a movable handle (5), wherein the two ends of the clamp body (1) are respectively provided with a guide sleeve (102) and a nut (103), the set screw (3) is in threaded connection with the nut (103), the outer end of the set screw (3) is connected with the movable handle (5), and the inner end of the set screw is connected with the movable pressing block (4); the quick-change drill bushing (2) is placed in the guide sleeve (102); the guide sleeve (102), the nut (103), the quick-change drill bush (2) and the set screw (3) are coaxial.

2. The counterboring tool of claim 1, wherein: the quick-change drill bushing (2) is provided with a guide hole (6) which is coaxial with the guide sleeve (102).

3. The counterboring tool of claim 1, wherein: the C-shaped block (101) is welded with the guide sleeve (102) and the nut (103) into a whole.

4. The counterboring tool of claim 1, wherein: the quick-change drill bushing (2) has multiple specifications.

5. The counterboring tool of claim 1, wherein: the movable handle (5) is in clearance fit with the set screw (3) and has enlarged-size parts at both ends.

6. The counterboring tool of claim 1, wherein: the end face of the movable pressing block (4) facing the guide sleeve (102) is provided with a hole for opening, and the end face facing the set screw (3) is provided with a mounting hole for accommodating a connector of the set screw (3).