CN212042767U

CN212042767U - Diameter-variable hole opening tool

Info

Publication number: CN212042767U
Application number: CN202020554331.0U
Authority: CN
Inventors: 罗发学; 祁彬; 陈惠瑜; 郑锦昌; 郭虹壮; 张婷
Original assignee: Shenzhen Bauing Construction Group Co ltd
Current assignee: Shenzhen Bauing Construction Group Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-12-01
Anticipated expiration: 2030-04-15

Abstract

The utility model provides a diameter-variable tapping tool, which comprises a drill bit seat, a cutting rod, a slide rail, a drill bit and a cutting head; scales are arranged on the sliding rail; the drill bit seat is vertically sleeved on the slide rail, and the drill bit is arranged at the head end of the drill bit seat; the two cutting rods are slidably and vertically sleeved on the sliding rail and are parallelly arranged on two sides of the drill bit seat, and the cutting head is arranged at the end part of the cutting rod. The utility model has the characteristics of simple structure, adjust convenience, reduce cost, raising the efficiency.

Description

Diameter-variable hole opening tool

Technical Field

The utility model belongs to the technical field of the architectural decoration technique and specifically relates to a but reducing trompil instrument is related to.

Background

In the decoration and finishing engineering, often meet the round hole of seting up various dimensions when smallpox and wall need install all kinds of circular shape equipment (for example lamps and lanterns, the shower head, the water pipe etc.), therefore need use the trompil instrument in various apertures, however, current trompil instrument is the trompil instrument in fixed aperture, install and use on electric hand drill, when seting up the round hole of not unidimensional, need change the trompil instrument in different apertures, lead to frequent change, the step is loaded down with trivial details, consuming time is hard, and be equipped with the trompil instrument of multiple size simultaneously, the cost is also high.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a but diameter-changing trompil instrument has simple structure, adjusts characteristics convenient, reduce cost, raising the efficiency.

In order to solve the technical problem, the utility model provides a diameter-variable tapping tool, which comprises a drill bit seat, a cutting rod, a slide rail, a drill bit and a cutting head; scales are arranged on the sliding rail; the drill bit seat is vertically sleeved on the slide rail, and the drill bit is arranged at the head end of the drill bit seat; the two cutting rods are slidably and vertically sleeved on the sliding rail and are parallelly arranged on two sides of the drill bit seat, and the cutting head is arranged at the end part of the cutting rod.

Preferably, the drill bit is removably inserted into a sleeve at the head end of the drill bit seat.

Preferably, the cutting head is detachably mounted in a groove formed on the opposite surfaces of the end portions of the two cutting rods.

Preferably, the top surface and the bottom surface of the slide rail are planes, and scales are arranged on the planes.

Preferably, the scale extends marks to two ends of the slide rail by taking positions on the slide rail corresponding to the extension lines of the outer walls on two sides of the drill bit as starting points.

Preferably, the positions where the outer walls on the two sides of the drill bit seat and the slide rail intersect are both provided with first concave positions, and the vertical projections of the two first concave positions on the slide rail are overlapped with the extension lines of the outer walls on the two sides of the drill bit.

Preferably, the positions where the opposite side surfaces of the two cutting rods and the sliding rail intersect are respectively provided with a second concave position, and the perpendicular projection of the two second concave positions on the sliding rail is overlapped with the extension lines of the opposite side walls of the two cutting heads.

Preferably, two ends of the sliding rail are provided with baffles for preventing the cutting rod from sliding off.

The utility model relates to a but reducing trompil instrument compares with current design, and its advantage lies in: the two cutting heads are matched with the drill bit to drill holes, so that the hole opening diameter of the hole opening tool can be adjusted, the time wasted by frequently replacing the hole opening tool is reduced, and the working efficiency is improved; the hole-forming tools with various sizes are avoided, and the cost is reduced; the blank of the hole opening tool with unusual size in the market is filled.

Drawings

Fig. 1 is a schematic perspective view of the variable diameter drilling tool of the present invention.

Fig. 2 is a schematic top view of the variable diameter drilling tool of the present invention.

Fig. 3 is a schematic side view of the variable diameter drilling tool of the present invention.

Fig. 4 is a schematic side view of the variable diameter drilling tool of the present invention.

Detailed Description

The invention is described in detail below with reference to the accompanying figures 1-4 and the specific embodiments.

The utility model relates to a but be used for offering the trompil instrument of reducing of round hole on plank such as plank, splint, gypsum board, PVC board among the decoration and finishing engineering, including drill bit seat 1, cutting rod 2, slide rail 3, drill bit 4, cutting head 5, each subassembly adopts the metal material to make.

The drill bit seat 1 is vertically sleeved on the slide rail 3 and is positioned in the middle of the slide rail, and two end parts of the drill bit seat are positioned on two sides of the slide rail. The drill bit seat 1 is fixed with the slide rail 3 through a locking nut 6. The head of the drill bit seat 1 is a hollow column-shaped sleeve used for fixing the drill bit 4, the tail of the drill bit seat is the same as the tail of a common drill bit, and the drill bit seat can be directly connected with a drill bit seat of an electric hand drill.

The drill bit 4 is inserted into the sleeve at the head end of the drill bit seat 1 and is detachably mounted on the sleeve through a locking nut 6 (the drill bit 4 can be replaced).

The two cylindrical cutting rods 2 are vertically sleeved on the slide rails 3 in a sliding mode and are parallelly arranged on two sides of the drill bit seat 1, the cutting rods 2 are fixed on the required positions of the slide rails 3 through the locking nuts 6, and the cutting rods 2 can move left and right on the slide rails 3 to adjust the radius of the opening. The opposite faces of the free ends of the two cutting bars 2 are provided with grooves for the insertion of cutting heads 5.

The two cutting heads 5 are respectively inserted into the grooves of the cutting rod 2 and are detachably fixed with the cutting rod 2 through the lock nut 6 (the cutting heads 5 can be replaced). Two cutting heads 5 are used to cooperate with the drill bit to drill a hole.

The top surface and the bottom surface of the slide rail 3 are planes, and scales are arranged on the planes. The positions on the slide rail 3 corresponding to the extension lines of the outer walls of the two sides of the drill bit 4 are used as starting points, and the marking scales are extended to the two ends of the slide rail 3. The positions where the outer walls on the two sides of the drill bit seat 1 and the slide rail 3 are crossed are respectively provided with a first concave position, and the vertical projection of the opposite side surfaces of the two first concave positions on the slide rail 3 is overlapped with or aligned with the horizontal extension lines of the outer walls on the two sides of the drill bit 4 up and down, so that the scales can be read conveniently.

The position that the relative side face of two cutting poles 2 and slide rail 3 intersect all is equipped with the second concave position, and the perpendicular projection of two second concave positions on slide rail 3 overlaps or aligns from top to bottom with the horizontal extension line that the relative side face of two cutting heads 5 is located on slide rail 3 mutually to conveniently read the scale.

Two ends of the sliding rail 3 are provided with baffles 31 for preventing the cutting rod 2 from sliding off, and the baffles 31 are arranged at the ends of the sliding rail 3 through locking nuts 6.

During operation, after adjusting two cutting poles 2 place positions on the slide rail 3 according to required trompil radius, and lock with lock nut 6, install this trompil instrument on electric hand drill, the centre of a circle of required trompil position is aimed at to drill bit 4, starts electric hand drill, and drill bit 4 begins the rotation, two cutting heads 5 rotate relatively to the drill bit simultaneously, and both combine drilling, can open the round hole in required aperture.

Claims

1. A variable diameter tapping tool, characterized in that: comprises a drill bit seat (1), a cutting rod (2), a slide rail (3), a drill bit (4) and a cutting head (5); scales are arranged on the sliding rail (3); the drill bit seat (1) is vertically sleeved on the slide rail (3), and the drill bit (4) is installed at the head end of the drill bit seat (1); the two cutting rods (2) are slidably and vertically sleeved on the sliding rail (3) and are parallelly arranged on two sides of the drill bit seat (1), and the cutting head (5) is arranged at the end part of the cutting rods (2).

2. A variable diameter tapping tool as claimed in claim 1 wherein: the drill bit (4) is detachably inserted into the sleeve at the head end of the drill bit seat (1).

3. A variable diameter tapping tool as claimed in claim 1 wherein: the cutting head (5) is detachably arranged in the grooves formed in the opposite surfaces of the end parts of the two cutting rods (2).

4. A variable diameter tapping tool as claimed in claim 1 wherein: the top surface and the bottom surface of the slide rail (3) are planes, and scales are arranged on the planes.

5. A variable diameter tapping tool as claimed in claim 4 wherein: the scale takes the position on the slide rail (3) corresponding to the extension lines of the outer walls of the two sides of the drill bit (4) as a starting point, and extends marks to the two ends of the slide rail (3).

6. A variable diameter tapping tool as claimed in claim 1 wherein: the outer walls of the two sides of the drill bit seat (1) are respectively provided with a first concave position at the crossed position of the slide rail (3), and the vertical projection of the two first concave positions on the slide rail (3) is overlapped with the extension lines of the outer walls of the two sides of the drill bit (4).

7. A variable diameter tapping tool as claimed in claim 1 wherein: the positions, at which the opposite side surfaces of the two cutting rods (2) and the sliding rail (3) are crossed, are provided with second concave positions, and the vertical projections of the two second concave positions on the sliding rail (3) are overlapped with the extension lines of the opposite side walls of the two cutting heads (5).

8. A variable diameter tapping tool as claimed in claim 1 wherein: two ends of the sliding rail (3) are provided with baffles (31) for preventing the cutting rod (2) from sliding off.