阅读说明：本技术 一种阀门钻孔的夹紧装置 (Clamping device for valve drilling ) 是由 宋良永 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种阀门钻孔的夹紧装置,涉及阀门钻孔技术领域,该装置包括底座,底座上设置有滑动件,滑动件安装有能够沿滑动件往复运动的承载件,承载件上设置有能够上下移动的伸缩轴,伸缩轴上远离承载件的一端连接有钻头,底座还设置有用于夹持法兰的夹持件；底座的顶部铰接有与夹持件相配合的L形抵板,L形抵板的端部设置有固定块,底座上设置有与固定块相配合的固定槽。这样的装置,夹持件从周围对待钻孔的法兰进行夹持,然后再放下L形抵板,L形抵板上的固定块卡入固定槽内,L形抵板的内侧壁抵接待钻孔的法兰,提高了钻头钻孔的精准度。装置结构简单,操作简单,在钻孔时能够牢牢固定法兰。(The invention discloses a clamping device for valve drilling, which relates to the technical field of valve drilling and comprises a base, wherein a sliding part is arranged on the base, a bearing part capable of reciprocating along the sliding part is installed on the sliding part, a telescopic shaft capable of moving up and down is arranged on the bearing part, one end of the telescopic shaft, which is far away from the bearing part, is connected with a drill bit, and the base is also provided with a clamping part for clamping a flange; the top of base articulates there is the L shape that matches with the holder to support the board, and the L shape supports the tip of board and is provided with the fixed block, is provided with the fixed slot with fixed block matched with on the base. According to the device, the clamping piece clamps the flange to be drilled from the periphery, then the L-shaped supporting plate is put down, the fixing block on the L-shaped supporting plate is clamped into the fixing groove, the inner side wall of the L-shaped supporting plate is in butt joint with the flange to be drilled, and the drilling accuracy of the drill bit is improved. The device has simple structure and simple operation, and can firmly fix the flange during drilling.)

1. A clamping device for valve drilling, comprising: the base is provided with a sliding part, the sliding part is provided with a bearing part capable of reciprocating along the sliding part, the bearing part is provided with a telescopic shaft capable of moving up and down, one end of the telescopic shaft far away from the bearing part is connected with a drill bit, and the base is also provided with a clamping piece for clamping a flange; the top of the base is hinged with an L-shaped abutting plate matched with the clamping piece, a fixing block is arranged at the end of the L-shaped abutting plate, and a fixing groove matched with the fixing block is formed in the base.

2. The clamping device for valve drilling according to claim 1, wherein the clamping member comprises two symmetrically arranged lead screws, any one of the lead screws is fixedly connected with the base, nuts are respectively screwed on two sides of any one of the lead screws, inner side walls of the nuts are abutted with clamping plates, and the nuts can move along the lead screws towards the middle, so that the two clamping plates are close to each other to clamp the flange.

3. The clamping device for the drilling of the valve according to claim 2, wherein the clamping surfaces of the clamping plates are semi-circular arc-shaped, and a clamping groove for clamping the flange is formed between the two clamping plates.

4. The valve drilling clamping device of claim 2, wherein the clamping side of the clamping plate is provided with an elastic pad.

5. The valve drilling clamping device of claim 4, wherein the elastic pad is a rubber pad.

6. The valve drilling clamping device of claim 1, wherein the telescopic shaft is detachably connected with the drill bit.

7. The clamping device for valve drilling according to claim 1, wherein the sliding member is a first sliding rail or a first sliding chute, and the base is slidably connected to the sliding rail or the sliding chute.

8. The clamping device for drilling the valve according to claim 1, wherein the supporting member is provided with a second sliding rail or a second sliding groove in a vertical direction, the telescopic shaft is slidably connected with the second sliding rail or the second sliding groove, and a fixing plate for fixing the telescopic shaft is mounted on the supporting member.

9. The clamping device for the drilling of the valve according to claim 1, wherein the L-shaped abutting plate comprises an L-shaped connecting plate and a circular abutting plate which are connected with each other, the circular abutting plate is adapted to the flange and is used for abutting against the flange, the circular abutting plate comprises an inner ring and an outer ring, the inner ring and the outer ring are located on the same vertical plane, and the inner ring and the outer ring are connected through a U-shaped arm;

the inner ring and the outer ring are used for abutting against a flange to be drilled;

the drill bit is characterized in that a first reserved space is arranged in the middle of the inner ring, a second reserved space is arranged between the inner ring and the outer ring, the first reserved space corresponds to the middle of the flange and is used for accommodating the drill bit when the drill bit drills a middle hole, and the second reserved space corresponds to the peripheral part of the flange and is used for accommodating the drill bit when the drill bit drills peripheral holes.

10. The clamping device for the drilling of the valve as recited in claim 9, wherein said circular retaining plate is detachably connected to said L-shaped connecting plate.

Technical Field

The invention relates to the technical field of valve drilling, in particular to a clamping device for valve drilling.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like.

In the prior art, valves need to be connected through flanges; the valve fixing aspect of the existing drilling machine is still to be improved.

Disclosure of Invention

To overcome or at least partially solve the above problems, embodiments of the present invention provide a clamping device for a valve bore.

The embodiment of the invention is realized by the following steps:

a valve drilling clamping device comprising: the base is provided with a sliding part, the sliding part is provided with a bearing part capable of reciprocating along the sliding part, the bearing part is provided with a telescopic shaft capable of moving up and down, one end of the telescopic shaft far away from the bearing part is connected with a drill bit, and the base is also provided with a clamping part for clamping a flange; the top of the base is hinged with an L-shaped abutting plate matched with the clamping piece, a fixing block is arranged at the end part of the L-shaped abutting plate, and a fixing groove matched with the fixing block is formed in the base.

When the device is used, a flange to be drilled is placed in the clamping piece, the clamping piece clamps the flange to be drilled from the periphery, the L-shaped abutting plate is put down, the fixing block on the L-shaped abutting plate is clamped into the fixing groove, the inner side wall of the L-shaped abutting plate abuts against the flange to be drilled, so that the rear side wall of the flange to be drilled is fixed, the flange is firmly fixed, and the drilling accuracy of a drill bit is improved. Furthermore, a sliding part is arranged on the base, the bearing part can move along the sliding part in the horizontal direction to adjust the position of the drill bit, and a user moves the bearing part to enable the drill bit on the telescopic shaft to align with a drilling position to perform drilling operation. The telescopic shaft can also be moved up and down so as to enable the drill bit to be aligned with the drilling position for drilling operation. The device has simple structure and simple operation, and can firmly fix the flange during drilling.

In some embodiments of the present invention, the clamping member includes two symmetrically disposed lead screws, any one of the lead screws is fixedly connected to the base, two sides of any one of the lead screws are respectively connected to nuts by screw threads, inner sidewalls of the nuts abut against clamping plates, and the nuts can move along the lead screws toward the middle to enable the two clamping plates to approach each other to clamp the flange.

In some embodiments of the present invention, the clamping surfaces of the clamping plates are semi-circular arcs, and a clamping groove for clamping the flange is formed between the two clamping plates.

In some embodiments of the invention, the clamping side of the clamping plate is provided with an elastic pad.

In some embodiments of the present invention, the elastic pad is a rubber pad.

In some embodiments of the invention, the telescoping shaft is removably connected to the drill bit.

In some embodiments of the invention, the sliding member is a first sliding rail or a first sliding groove, and the base is slidably connected to the sliding rail or the sliding groove.

In some embodiments of the present invention, the bearing member is provided with a second sliding rail or a second sliding groove in a vertical direction, the telescopic shaft is slidably connected to the second sliding rail or the second sliding groove, and the bearing member is provided with a fixing plate for fixing the telescopic shaft.

In some embodiments of the present invention, the L-shaped abutting plate includes an L-shaped connecting plate and a circular abutting plate connected to each other, the circular abutting plate is adapted to the flange and used for abutting against the flange, the circular abutting plate includes an inner ring and an outer ring, the inner ring and the outer ring are located on the same vertical plane, and the inner ring and the outer ring are connected by a U-shaped arm;

the inner ring and the outer ring are used for abutting against a flange to be drilled;

the middle part of the inner ring is a first reserved space, a second reserved space is arranged between the inner ring and the outer ring, the first reserved space corresponds to the middle part of the flange and is used for accommodating the drill bit when the drill bit drills a middle hole, and the second reserved space corresponds to the peripheral part of the flange and is used for accommodating the drill bit when the drill bit drills a peripheral hole.

In some embodiments of the present invention, the circular abutting plate is detachably connected to the L-shaped connecting plate.

The embodiment of the invention at least has the following advantages or beneficial effects:

a valve drilling clamping device comprising: the base is provided with a sliding part, the sliding part is provided with a bearing part capable of reciprocating along the sliding part, the bearing part is provided with a telescopic shaft capable of moving up and down, one end of the telescopic shaft far away from the bearing part is connected with a drill bit, and the base is also provided with a clamping part for clamping a flange; the top of the base is hinged with an L-shaped abutting plate matched with the clamping piece, a fixing block is arranged at the end part of the L-shaped abutting plate, and a fixing groove matched with the fixing block is formed in the base.

When the device is used, a flange to be drilled is placed in the clamping piece, the clamping piece clamps the flange to be drilled from the periphery, the L-shaped abutting plate is put down, the fixing block on the L-shaped abutting plate is clamped into the fixing groove, the inner side wall of the L-shaped abutting plate abuts against the flange to be drilled, so that the rear side wall of the flange to be drilled is fixed, the flange is firmly fixed, and the drilling accuracy of a drill bit is improved. Furthermore, a sliding part is arranged on the base, the bearing part can move along the sliding part in the horizontal direction to adjust the position of the drill bit, and a user moves the bearing part to enable the drill bit on the telescopic shaft to align with a drilling position to perform drilling operation. The telescopic shaft can also be moved up and down so as to enable the drill bit to be aligned with the drilling position for drilling operation. The device has simple structure and simple operation, and can firmly fix the flange during drilling.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of an L-shaped connecting plate of an embodiment of a clamping device for valve drilling according to the present invention without being lowered;

FIG. 2 is a schematic structural view of an L-shaped connecting plate of an embodiment of a clamping device for valve drilling according to the present invention after being laid down;

FIG. 3 is a schematic view of a clamp member of an embodiment of a clamping device for valve drilling according to the present invention;

FIG. 4 is a schematic front view of a circular retaining plate in an embodiment of a clamping device for valve drilling according to the present invention;

FIG. 5 is a schematic side view of a circular retaining plate in an embodiment of a clamping device for valve drilling according to the present invention;

FIG. 6 is a schematic view of a drill-in flange of an embodiment of the clamping device for valve drilling according to the present invention;

fig. 7 is a schematic structural view of a flange in the prior art.

Icon: 1. a base; 11. fixing grooves; 2. a slider; 3. a carrier; 31. a fixing plate; 4. a telescopic shaft; 5. a drill bit; 6. a clamping member; 61. a screw rod; 62. a nut; 63. a splint; 64. a clamping groove; 64. an elastic pad; 7. an L-shaped resisting plate; 71. an L-shaped connecting plate; 72. a circular butt plate; 721. an inner ring; 722. an outer ring; 723. a first reserved space; 724. a second reserved space; 73. a U-shaped arm; 8. a fixed block; 9. a flange; 91. a middle region; 92. a peripheral region; 93. an inner ring annular portion; 94. an outer ring annular portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

After long-term research and practice, the inventor of the application finds that in the prior art, the valve needs to be connected through the flange 9; the valve fixing aspect of the existing drilling machine is still to be improved. In view of the above, please refer to fig. 1-2, which show a clamping device for a valve bore according to an embodiment of the present invention, wherein fig. 1 is a schematic structural view of an L-shaped connecting plate 71 in an embodiment of the clamping device for a valve bore according to the present invention; FIG. 2 is a schematic view of an L-shaped connecting plate 71 of an embodiment of the valve drilling clamping device of the present invention after being laid down; the device includes base 1, is provided with slider 2 on above-mentioned base 1, and slider 2 holds carrier 3 adaptation, holds carrier 3 and slider 2 sliding connection, and slider 2 can be the spout, also can be slide rail etc.. The slider 2 is provided with a carrier 3 capable of reciprocating along the slider 2, the carrier 3 being slidable along the plane of the base 1, the slide members 2 may be arranged in different directions so that the carriage 3 can slide side to side, back and forth, and along an oblique angle, in this embodiment, the sliding member 2 shown in fig. 1 and 2 allows the carrier 3 to slide back and forth along the surface of the base 1, the bearing piece 3 is provided with a telescopic shaft 4 capable of moving up and down, the bearing piece 3 can be provided with a slide rail or a sliding chute in the vertical direction, the telescopic shaft 4 is slidably connected to the second slide rail or the second sliding groove, the telescopic shaft 4 can slide up and down on the carrier 3, the carrier 3 is provided with a fixing plate 31 for fixing the telescopic shaft 4, and the telescopic shaft 4 is fixed after sliding to a fixed position. The telescopic shaft 4 is connected with a drill bit 5 at one end far away from the bearing part 3, the drill bit 5 is used for drilling a flange 9, and the telescopic shaft 4 can be extended and used for adjusting the distance between the drill bit 5 and the flange 9. The top of the base 1 is hinged with an L-shaped abutting plate 7 matched with the clamping piece 6, a fixing block 8 is arranged at the end part of the L-shaped abutting plate 7, and a fixing groove 11 matched with the fixing block 8 is arranged on the base 1. The fixing block 8 may be engaged with the fixing groove 11.

When the device is used, the flange 9 to be drilled is placed in the clamping piece 6, the clamping piece 6 clamps the flange 9 to be drilled from the periphery, the L-shaped supporting plate 7 is put down, the fixing block 8 on the L-shaped supporting plate 7 is clamped into the fixing groove 11, the inner side wall of the L-shaped supporting plate 7 abuts against the flange 9 to be drilled, therefore, the rear side wall of the flange 9 to be drilled is fixed, the flange 9 is firmly fixed at the moment, and the drilling accuracy of the drill bit 5 is improved. Further, a sliding member 2 is disposed on the base 1, the carrier 3 can move along the sliding member 2 in a horizontal direction to adjust the position of the drill bit 5, and a user moves the carrier 3 to align the drill bit 5 on the telescopic shaft 4 with a drilling position for drilling. The telescopic shaft 4 can be moved up and down so that the drill bit 5 is aligned with a drilling position to perform a drilling operation. The device has simple structure and simple operation, and can firmly fix the flange 9 during drilling.

Referring to fig. 3, fig. 3 is a schematic structural view of a clamping member 6 in an embodiment of a clamping device for valve drilling according to the present invention; in some embodiments of the present invention, the clamping member 6 includes two symmetrically disposed screws 61, any one of the screws 61 is fixedly connected to the base 1, nuts 62 are respectively screwed to both sides of any one of the screws 61, inner sidewalls of the nuts 62 abut against clamping plates 63, and the nuts 62 can move along the screws 61 to move the two clamping plates 63 to approach each other and clamp the flange 9.

In the above embodiment, the nut 62 is screwed to the screw rod 61, and the nut 62 is rotated to move toward the middle of the screw rod 61, so that the clamping plate 63 also moves toward the middle to firmly clamp the flange 9, thereby improving the drilling accuracy.

Illustratively, the clamping surfaces of the clamping plates 63 are semi-circular arcs, which are adapted to the shape of the flange 9, so as to stably clamp the flange 9, and a clamping groove 64 for clamping the flange 9 is formed between the two clamping plates 63.

Furthermore, an elastic pad 64 is disposed on the clamping side of the clamping plate 63, and the elastic pad 64 has a buffer function, so that the flange 9 can be prevented from being damaged due to rigid contact. The elastic pad 64 may be a rubber pad or a plastic pad.

In some embodiments of the present invention, the telescopic shaft 4 is detachably connected to the drill bit 5, so that different drill bits 5 can be replaced according to the drilling requirement, and the applicability is strong.

For example, the sliding member 2 is a first sliding rail or a first sliding groove, and the base 1 is slidably connected to the sliding rail or the sliding groove.

Further, the carrier 3 is provided with a second slide rail or a second slide groove in the vertical direction, the telescopic shaft 4 is slidably connected to the second slide rail or the second slide groove, and the fixed plate 31 for fixing the telescopic shaft 4 is mounted on the carrier 3.

In some embodiments of the present invention, the L-shaped abutting plate 7 comprises an L-shaped connecting plate 71 and a circular abutting plate 72 connected to each other, and the circular abutting plate 72 is adapted to the flange 9 and is used for abutting against the flange 9, and after long-term research and practice, the inventor further finds that: when the drill 5 drills a hole in the flange 9, the back of the flange 9 is usually abutted by an abutment block in the prior art to prevent the drill 5 from passing through the flange 9 and being damaged, however, the abutment block may wear or even damage the drill 5 rotating at a high speed, and the flange 9 in the prior art is circular, please refer to fig. 7, and fig. 7 is a schematic structural diagram of the flange 9 in the prior art. The areas of the drilling are fixed, typically at the central area 91 and in the peripheral area 92, without involving the inner ring annular portion 93 and the outer ring annular portion 94, and in view of this, the circular retaining plate 72 is configured as: referring to fig. 4-6, fig. 4 is a front view of a circular abutting plate 72 in the clamping device for valve drilling according to the present invention; FIG. 5 is a schematic side view of a circular retaining plate 72 of a clamping apparatus for valve drilling according to the present invention; fig. 6 is a schematic structural diagram of a drill bit 5 drilling into a flange 9 in the valve drilling clamping device of the invention. The circular resisting plate 72 comprises an inner ring 721 and an outer ring 722, the inner ring 721 and the outer ring 722 are positioned on the same vertical plane, and the inner ring 721 and the outer ring 722 are connected through a U-shaped arm 73; the inner ring 721 and the outer ring 722 are used for abutting against a flange 9 to be drilled; the middle of the inner ring 721 is a first reserved space 723, a second reserved space 724 is formed between the inner ring 721 and the outer ring 722, the first reserved space 723 corresponds to the middle of the flange 9 and is used for accommodating the drill 5 when the drill 5 drills a middle hole without damaging the drill 5, and the second reserved space 724 corresponds to the peripheral part of the flange 9 and is used for accommodating the drill 5 when the drill 5 drills a peripheral hole without damaging the drill 5.

In the above embodiment, the L-shaped abutting plate 7 is hinged to the base 1, the L-shaped abutting plate 7 can be lowered when the L-shaped abutting plate 7 rotates rightwards, and the L-shaped abutting plate 7 is matched with the flange 9. For abutting against the flange 9 to receive the power of the drill bit 5. The L-shaped abutting plate 7 is provided with a circular abutting plate 72, the circular abutting plate 72 is adapted to the flange 9 and is used for abutting against the flange 9, and the inner ring 721 and the outer ring 722 are used for abutting against the flange 9 to be drilled; a first reserved space 723 is formed in the middle of the inner ring 721, a second reserved space 724 is formed between the inner ring 721 and the outer ring 722, the first reserved space 723 corresponds to the middle of the flange 9 and is used for accommodating the drill 5 when the drill 5 drills a middle hole without damaging the drill 5, and the second reserved space 724 corresponds to the peripheral part of the flange 9 and is used for accommodating the drill 5 when the drill 5 drills a peripheral hole without damaging the drill 5. The service life of the drill bit 5 is increased.

In some embodiments of the present invention, the circular retaining plate 72 is detachably connected to the L-shaped connecting plate 71. The corresponding circular abutting plate 72 can be replaced according to the type of the flange 9, so that the circular abutting plate 72 is matched with the flange 9.

In summary, the embodiments of the present invention provide long-term research and practice, and the inventors of the present application found that, in the prior art, a valve needs to be connected by a flange 9; the valve fixing aspect of the existing drilling machine is still to be improved. In view of the above, please refer to fig. 1-2, which show a clamping device for a valve bore according to an embodiment of the present invention, wherein fig. 1 is a schematic structural view of an L-shaped connecting plate 71 in an embodiment of the clamping device for a valve bore according to the present invention; FIG. 2 is a schematic view of an L-shaped connecting plate 71 of an embodiment of the valve drilling clamping device of the present invention after being laid down; the device includes base 1, is provided with slider 2 on above-mentioned base 1, and slider 2 holds carrier 3 adaptation, holds carrier 3 and slider 2 sliding connection, and slider 2 can be the spout, also can be slide rail etc.. The slider 2 is provided with a carrier 3 capable of reciprocating along the slider 2, the carrier 3 being slidable along the plane of the base 1, the slide members 2 may be arranged in different directions so that the carriage 3 can slide side to side, back and forth, and along an oblique angle, in this embodiment, the sliding member 2 shown in fig. 1 and 2 allows the carrier 3 to slide back and forth along the surface of the base 1, the bearing piece 3 is provided with a telescopic shaft 4 capable of moving up and down, the bearing piece 3 can be provided with a slide rail or a sliding chute in the vertical direction, the telescopic shaft 4 is slidably connected to the second slide rail or the second sliding groove, the telescopic shaft 4 can slide up and down on the carrier 3, the carrier 3 is provided with a fixing plate 31 for fixing the telescopic shaft 4, and the telescopic shaft 4 is fixed after sliding to a fixed position. The telescopic shaft 4 is connected with a drill bit 5 at one end far away from the bearing part 3, the drill bit 5 is used for drilling a flange 9, and the telescopic shaft 4 can be extended and used for adjusting the distance between the drill bit 5 and the flange 9. The top of the base 1 is hinged with an L-shaped abutting plate 7 matched with the clamping piece 6, a fixing block 8 is arranged at the end part of the L-shaped abutting plate 7, and a fixing groove 11 matched with the fixing block 8 is arranged on the base 1. The fixing block 8 may be engaged with the fixing groove 11.

When the device is used, the flange 9 to be drilled is placed in the clamping piece 6, the clamping piece 6 clamps the flange 9 to be drilled from the periphery, the L-shaped supporting plate 7 is put down, the fixing block 8 on the L-shaped supporting plate 7 is clamped into the fixing groove 11, the inner side wall of the L-shaped supporting plate 7 abuts against the flange 9 to be drilled, therefore, the rear side wall of the flange 9 to be drilled is fixed, the flange 9 is firmly fixed at the moment, and the drilling accuracy of the drill bit 5 is improved. Further, a sliding member 2 is disposed on the base 1, the carrier 3 can move along the sliding member 2 in a horizontal direction to adjust the position of the drill bit 5, and a user moves the carrier 3 to align the drill bit 5 on the telescopic shaft 4 with a drilling position for drilling. The telescopic shaft 4 can be moved up and down so that the drill bit 5 is aligned with a drilling position to perform a drilling operation. The device has simple structure and simple operation, and can firmly fix the flange 9 during drilling.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.