CN213827953U

CN213827953U - Drilling clamping tool

Info

Publication number: CN213827953U
Application number: CN202022796482.XU
Authority: CN
Inventors: 刘美芝; 李旭斌; 李小宏; 张太清; 郭庆吉; 赵孝威; 闫鑫
Original assignee: Changcun Coal Mining of Shanxi Luan Environmental Energy Development Co Ltd
Current assignee: Changcun Coal Mining of Shanxi Luan Environmental Energy Development Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-30
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a drilling clamping tool belongs to centre gripping technical field. The drill clamping tool comprises a sleeve (1) and a connecting plate (5) fixedly connected to each other. The axis of the cylindrical sleeve (1) is parallel to the horizontal plane, and the axis of the cylindrical sleeve coincides with the diagonal of the connecting plate (5). A cylindrical workpiece hole (3) is formed in the coaxial position of the sleeve (1); the upper surface of the sleeve (1) is provided with a positioning hole (2) for a drill to process a workpiece; a chip guide groove (4) is correspondingly arranged below the sleeve (1) opposite to the positioning hole (2). The drilling clamping tool can fix the cylindrical workpiece in the workpiece hole (3) to form surface contact of the tool and the workpiece, so that the stability of the workpiece during drilling is improved, the drilling position can be found more accurately, and the technical problem of low machining precision during drilling the cylindrical workpiece is solved.

Description

Drilling clamping tool

Technical Field

The utility model relates to a centre gripping technical field specifically is a drilling centre gripping instrument.

Background

The drilling centre gripping instrument that uses on current vertical drilling machine is mostly the bench vice, and the bench vice includes fixed vice and movable vice jaw, and two keep silent are the same size flat board of relative setting usually for wait the work piece that punches in the middle of the centre gripping. If cylindrical workpieces need to be drilled, the cylindrical surface is tangent to the vertically arranged plane by adopting the clamping tool, and the two planes are in line contact with the tangent position of the cylindrical surface, so that the workpieces are not easy to stabilize.

Especially, the number of the drilling holes of the forepoling beam in a factory is large due to the large underground using number of the forepoling beams which play a role in temporary supporting of the underground driving working surface of the coal mine. When the cylindrical front canopy pipe is fixed on the bench vice, the cylindrical front canopy pipe is in line contact with the jaws at two sides, the fixation is not firm, and the vice is easily damaged by the back-and-forth shaking of the front canopy pipe. When the drilled hole diameter causes drilling on the drilling machine, the swing amplitude of the drilling machine rocker arm is large, the machining precision is influenced, the locking device of the drilling machine rocker arm is damaged, and great inconvenience is brought to the use of the drilling machine.

SUMMERY OF THE UTILITY MODEL

The utility model provides a drilling centre gripping instrument has solved the lower problem of machining precision when drilling to cylinder type work piece.

In order to solve the technical problem, the utility model provides a technical scheme does: a drilling clamping tool comprises a sleeve and a connecting plate which are fixedly connected; the sleeve is cylindrical, the axis of the sleeve is parallel to the horizontal plane, and the sleeve comprises an upper plane, a lower plane, an end face and a side face. The end face of the sleeve is provided with a coaxial workpiece hole, the upper plane is provided with a positioning hole for passing through a drill bit, and a chip guide groove is formed below the sleeve corresponding to the positioning hole. During machining, the workpiece can be matched with the workpiece hole, surface contact between the workpiece and a tool is realized, and compared with the prior line contact, the surface contact is firmer, and the drilling position can be determined more accurately.

The circle center of the positioning hole is located at the center of the upper plane. The drill penetrates into the workpiece inside the sleeve from the positioning hole, and the drill is located at the center, so that the drilling operation is more stable than before, and the machining precision is guaranteed.

The lower plane of the sleeve is welded with the connecting plate or connected with the connecting plate through bolts. The lower plane of the sleeve is fixed with the connecting plate, the two planes are in contact, and the stability of the tool is greatly improved. When the sleeve is connected with the connecting plate through the bolt, the corresponding sleeve can be replaced according to the specification of a machined workpiece and the diameter of a hole to be drilled, so that the clamping tool is suitable for more conditions.

The axis of the sleeve is superposed with the diagonal line of the connecting plate; compared with the parallel arrangement with the edge of the connecting plate, the connecting plate with the same size is provided with the longer sleeve, so that the space required by workpiece processing is greatly saved.

The edge of the connecting plate is provided with a plurality of open grooves, and the positions of the open grooves correspond to the T-shaped grooves on the table surface of the drilling machine. After the drilling clamping tool is matched with the T-shaped groove on the table top of the vertical drilling machine, the drilling clamping tool can be fixed, and drilling operation can be performed more stably.

Preferably, the side of the sleeve may consist of a curved surface or several flat surfaces. The sleeve comprises a plurality of specifications, and the corresponding sleeve can be installed on the drilling machine according to a workpiece to be machined.

When a cylindrical workpiece needs to be drilled, the connecting plate is fixedly connected to the table top of the vertical drilling machine, and the open slot at the edge of the connecting plate corresponds to the T-shaped slot on the table top. A sleeve is fixed above the connecting plate, a workpiece to be drilled is placed in a workpiece hole of the sleeve, the position of the workpiece to be drilled on the sleeve corresponds to a positioning hole in the sleeve, and the positioning hole corresponds to a drill bit above the sleeve. Starting the vertical drilling machine, operating the rocker arm to enable the drill bit to gradually approach the positioning hole until the drill bit is contacted with a workpiece, and processing the drill bit to a specified hole depth; and then the drill bit is withdrawn from the sleeve, the processed workpiece is taken out, and scrap iron in a scrap guide groove below the sleeve is cleaned, so that one-time drilling operation is completed.

Compared with the prior art, the utility model has the substantive characteristics that: arranging a sleeve with a cylindrical workpiece hole formed inside for clamping and fixing a cylindrical workpiece; and a positioning hole is arranged above the cylindrical workpiece, so that the clamping area of the drilling clamping tool on the cylindrical workpiece is obviously increased, and the stability and the drilling accuracy during drilling operation are improved. The phenomenon that the drilling tool slips on the surface of the workpiece is avoided, and the processing quality of the workpiece is improved; meanwhile, the device is simple in manufacturing method, low in cost and convenient to operate, and can be widely applied to machining operation.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic structural view of the drilling clamping tool of the present invention.

Reference numbers in the figures: 1. the structure comprises a sleeve, 2. a positioning hole, 3. a workpiece hole, 4. a chip guide groove, 5. a connecting plate and 6. an open slot.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A drilling clamping tool is installed on an upright drilling machine, and the upright drilling machine comprises a rocker arm, a spindle box and a drilling machine table board. As shown in fig. 1, the drilling clamping tool comprises a sleeve 1 and a connecting plate 5, wherein the axis of the sleeve 1 is coincident with the diagonal line of the connecting plate 5, and the sleeve and the connecting plate are fixedly connected. The edge of connecting plate 5 is provided with a plurality of open slots 6, and the position of open slot 6 corresponds with the T type groove on the drilling machine mesa, with bolt with both fixed connection.

The sleeve 1 is columnar, the axis of the sleeve is parallel to the horizontal plane, and the sleeve comprises an upper plane, a lower plane, an end face and a side face. The end face of the sleeve 1 is provided with a coaxial workpiece hole 3, the upper plane is provided with a positioning hole 2 for passing a drill bit, and a chip guide groove 4 is formed below the sleeve 1 corresponding to the positioning hole 2.

The center of the positioning hole 2 is positioned at the center of the upper plane of the sleeve 1.

When a cylindrical workpiece needs to be drilled, the connecting plate 5 is fixedly connected to the table top of the vertical drilling machine, and the open slot 6 in the edge of the connecting plate 5 corresponds to the T-shaped slot in the table top. The sleeve 1 is fixed above the connecting plate 5, a workpiece to be drilled is placed in the workpiece hole 3 of the sleeve 1, the position of the workpiece to be drilled corresponds to the positioning hole 2 in the sleeve 1, and the positioning hole 2 corresponds to a drill bit above. Starting the vertical drilling machine, operating the rocker arm to enable the spindle box to drive the drill bit to move downwards to gradually approach the positioning hole 2 until the drill bit is contacted with a workpiece, and continuing to move downwards to process to a specified hole depth; and then the drill bit is withdrawn from the sleeve 1, the processed workpiece is taken out, and scrap iron in a scrap guide groove 4 below the sleeve 1 is cleaned, so that one-time drilling operation is completed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A drill clamping tool, comprising: comprises a sleeve (1) and a connecting plate (5), which are fixedly connected; the sleeve (1) is columnar, the axis of the sleeve is parallel to the horizontal plane, and the sleeve comprises an upper plane, a lower plane, an end face and a side face; the end face of the sleeve (1) is provided with a coaxial workpiece hole (3), the upper plane is provided with a positioning hole (2) for a drill to pass through, and a chip guide groove (4) is formed below the sleeve (1) corresponding to the positioning hole (2).

2. The drill gripping tool of claim 1, wherein: the circle center of the positioning hole (2) is positioned at the center of the upper plane of the sleeve (1).

3. The drill gripping tool of claim 1, wherein: the lower plane of the sleeve (1) is welded with the connecting plate (5) or connected with the connecting plate by bolts.

4. The drill gripping tool of claim 1, wherein: the axis of the sleeve (1) coincides with the diagonal of the connecting plate (5).

5. The drill gripping tool of claim 1, wherein: the edge of the connecting plate (5) is provided with a plurality of open grooves (6), and the positions of the open grooves (6) correspond to the T-shaped grooves in the table top of the drilling machine.