CN219112976U

CN219112976U - High-strength curved hole twist drill

Info

Publication number: CN219112976U
Application number: CN202222676784.2U
Authority: CN
Inventors: 吴宏; 徐小杰
Original assignee: Rugao Qianjun Tools Co ltd
Current assignee: Rugao Qianjun Tools Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-06-02
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a high-strength curved hole twist drill which comprises a drill base, wherein a twist drill bit is fixedly arranged in the middle of one side of the outer wall of the drill base, a mounting base is fixedly arranged in the middle of the other side of the outer wall of the drill base, four first screw holes are formed in the outer wall of the mounting base at equal intervals, springs are arranged on the inner wall of the mounting base in a clamping mode, plastic rods are arranged on the inner wall of the springs in an penetrating mode, and buffer grooves are formed in the inner wall of the plastic rods. According to the utility model, the spring is fixed between the fixed shaft and the mounting base by the bolt in cooperation with the second screw hole at the upper end of the clamping shaft, the spring which is connected through the bolt insertion is not easy to fall off when punching, meanwhile, the plastic rod with the buffer groove is inserted between the springs, the fixed shaft is driven to rotate by the driving shaft and the clamping strip, and meanwhile, the plastic rod has toughness and can also rotate with the drill base, the driving force channel is larger, the bending rotation is convenient, and meanwhile, the plastic rod is not necessarily broken, so that the practicability of the device is improved.

Description

High-strength curved hole twist drill

Technical Field

The utility model relates to the technical field of twist drills, in particular to a high-strength curved hole twist drill.

Background

Conventional twist drills are mainly auxiliary equipment for drilling a workpiece while working the workpiece, and twist drills are tools for drilling a circular hole of the workpiece by rotary cutting thereof with respect to a fixed axis. The chip flute is spiral and is similar to a twist. The spiral grooves have 2 grooves, 3 grooves or more, but 2 grooves are most common. Twist drills may be clamped for use on hand-held drilling tools or drills, milling machines, lathes or even machining centers, both manual and electric. The drill bit material is typically high-speed tool steel or cemented carbide;

for this, chinese patent No. CN2829952Y discloses a curved hole twist drill for processing a curved aperture at a corner inside a valve body in a hydraulic system, a high-strength spring is connected with a handle tooth, and a high-strength spring 2 is connected with the twist drill in a threaded manner. The straight part of a bent hole is drilled on the valve body by using a standard twist drill with the same diameter, then the bent hole twist drill is used, the handle part 1 is deflected in the opposite direction of the bent hole direction, the feeding force is increased, the high-strength spring is uniformly bent in the machining hole to drive the twist drill to move in the machining hole, the purpose of machining the bent hole is achieved, but the conventional bent hole twist drill is used for bending hole polishing through deformation of the spring, the spring at the upper end of the bent hole twist drill is directly welded between the drill and the handle part, and the bent hole twist drill is broken under long-time drilling polishing so as to influence normal use of the drill, so that the practicability of the device is reduced.

Disclosure of Invention

The utility model aims to provide a high-strength curved hole twist drill, which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a curved hole fluted drill of high strength, includes the drill bit base, and the device mainly is the fluted drill can carry out curved hole drilling when drilling, the fixed fluted drill bit that is equipped with in intermediate position of drill bit base outer wall one side, the intermediate position fixed mounting base that is equipped with of drill bit base outer wall opposite side, the outer wall equidistance of mounting base leaves and is equipped with four first screw, the inner wall block of mounting base is equipped with the spring, the inner wall interlude of spring is equipped with the plastic stick, the buffer tank has been seted up to the inner wall of plastic stick, and one end and one side fixed connection of drill bit base of plastic stick.

Preferably, the other side of the outer wall of the drill bit base is fixedly provided with a clamping shaft at the middle position inside the installation base, and the outer wall of one end of the plastic rod penetrates through the inner wall of the clamping shaft to be fixedly connected with the inner wall of the drill bit base.

Preferably, the outer wall of the clamping shaft is equidistantly provided with a plurality of four second screw holes.

Preferably, the inner wall of the drill bit base is provided with a weight reduction groove, one side of the inner wall of the weight reduction groove is fixedly provided with a plurality of reinforcing shafts at equal intervals, and one ends of the reinforcing shafts are fixedly connected with the other side of the inner wall of the weight reduction groove respectively.

Preferably, the inner walls of the four first screw holes are respectively penetrated with bolts, the outer walls of one ends of the four bolts respectively penetrate through the inner walls of the four first screw holes to be in threaded connection with the inner walls of the four second screw holes, and a fixing shaft is fixedly arranged at one end of the spring.

Preferably, a driving shaft is fixedly arranged in the middle of one end of the fixing shaft, and four clamping strips are fixedly arranged on the outer wall of the driving shaft at equal intervals.

The utility model has the technical effects and advantages that:

(1) The device is provided with the bending hole drilling structure capable of being fixedly connected, the structure mainly comprises the drill bit base, the twist drill bit, the mounting base, the first screw hole, the spring, the plastic rod, the buffer groove and the like, the spring is fixed between the fixed shaft and the mounting base by using the bolt in cooperation with the second screw hole at the upper end of the clamping shaft, the spring which is connected through the bolt in a penetrating way is not easy to fall off during punching, meanwhile, the plastic rod with the buffer groove is penetrated between the springs, the fixed shaft rotates by driving the driving shaft and the clamping strip, the plastic rod is flexible and can rotate with the drill bit base, the driving force channel is large, the bending rotation is convenient, and meanwhile, the device is not necessarily broken, so that the practicability of the device is improved;

(2) The utility model is provided with the weight-reducing structure inside the drill bit on the device, and the structure mainly comprises the drill bit base, the weight-reducing groove, the reinforcing shafts and the like, the weight of the drill bit is reduced by arranging the weight-reducing groove on the inner wall of the drill bit base, and simultaneously, the support and toughness of the drill bit are increased by clamping the reinforcing shafts, so that the drill bit is convenient to rotate along with the plastic rod and the spring during drilling and is not easy to deform and damage during drilling, and the service life of the device is prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic diagram of a spring head and a plastic rod curved hole drill hole according to the present utility model.

Fig. 3 is a schematic view of the structure of the weight-reducing groove and the reinforcing shaft for supporting and reducing weight.

In the figure: 1. a drill base; 2. twist drill; 3. a mounting base; 4. a first screw hole; 5. a spring; 6. a plastic rod; 7. a buffer tank; 8. a clamping shaft; 9. a second screw hole; 10. a weight reduction groove; 11. a reinforcing shaft; 12. a bolt; 13. a fixed shaft; 14. a drive shaft; 15. and (5) clamping the strip.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The first embodiment of the utility model provides a high-strength curved hole twist drill shown in fig. 1-3, which comprises a drill base 1, wherein bolts 12 are inserted into the inner walls of four first screw holes 4, the outer walls of one ends of the four bolts 12 respectively penetrate through the inner walls of the four first screw holes 4 to be in threaded connection with the inner walls of four second screw holes 9, one end of a spring 5 is fixedly provided with a fixed shaft 13, the middle position of one end of the fixed shaft 13 is fixedly provided with a driving shaft 14, and four clamping strips 15 are fixedly arranged on the outer walls of the driving shaft 14 at equal intervals;

in the second embodiment, as shown in fig. 2, the twist drill with a high strength bent hole is provided in the utility model, wherein a twist drill 2 is fixedly arranged in the middle of one side of the outer wall of a drill base 1, a mounting base 3 is fixedly arranged in the middle of the other side of the outer wall of the drill base 1, four first screw holes 4 are formed in the outer wall of the mounting base 3 at equal intervals, springs 5 are arranged on the inner wall of the mounting base 3 in a clamping manner, plastic rods 6 are inserted in the inner walls of the springs 5, buffer grooves 7 are formed in the inner walls of the plastic rods 6, one ends of the plastic rods 6 are fixedly connected with one side of the drill base 1, a clamping shaft 8 is fixedly arranged in the middle of the other side of the outer wall of the drill base 1, and the outer wall of one end of the plastic rod 6 penetrates through the inner wall of the clamping shaft 8 and is fixedly connected with the inner wall of the drill base 1;

in a third embodiment, the utility model provides a high-strength curved hole twist drill as shown in fig. 3, wherein the outer wall of a clamping shaft 8 is equidistantly provided with a plurality of four second screw holes 9, the inner wall of a drill bit base 1 is provided with a weight reduction groove 10, one side of the inner wall of the weight reduction groove 10 is equidistantly and fixedly provided with a plurality of reinforcing shafts 11, and one ends of the reinforcing shafts 11 are respectively and fixedly connected with the other side of the inner wall of the weight reduction groove 10.

The working principle of the utility model is as follows: when using the curved hole twist drill of high strength among this design, at first, need fix spring 5 between drill bit base 1 and fixed axle 13 through installation base 3, make the device can normal use, and through being provided with by drill bit base 1, twist drill bit 2 in this design, installation base 3, first screw 4, spring 5, plastic rod 6 and buffer tank 7 etc. the curved hole structure of bending of fixed connection, when using, the second screw 9 of cooperation clamping axle 8 upper end uses bolt 12 to fix spring 5 between fixed axle 13 and installation base 3, and the spring 5 that alternates the connection through bolt 12 is difficult for droing when punching, and the while alternate plastic rod 6 that has buffer tank 7 between spring 5, plastic rod 6 has toughness flexible also can carry out the rotation through drive shaft 14 and clamping bar 15 drive rotation, and the driving force is great, the convenience is crooked, simultaneously also not necessarily fracture, and the practicality of improving the device is provided with by this device on the base, the cooperation clamping axle 8 upper end second screw 9 uses bolt 12 to fix spring 5 between fixed axle 13 and installation base 3, and the inside diameter of drill bit 11 is being reduced along with the heavy and the inside diameter of the reinforcing axle 10 is difficult for droing when the drilling the device is being used to the inside the drilling of the drilling bit 1, the inside diameter of the drilling bit is reduced along with the length of the reinforcing axle 10, and the inside diameter of the drilling device is increased along with the length of the drilling bit is 10 is increased.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Standard parts used by the utility model can be purchased from the market, and special-shaped parts can be customized according to the description of the specification and the drawings.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high strength curved hole twist drill, includes drill bit base (1), and the device mainly is the twist drill can carry out curved hole drilling when drilling, the intermediate position of drill bit base (1) outer wall one side is fixed and is equipped with twist drill (2), the intermediate position of drill bit base (1) outer wall opposite side is fixed and is equipped with installation base (3);

the novel drill bit is characterized in that four first screw holes (4) are formed in the outer wall of the mounting base (3) in an equidistant mode, springs (5) are arranged on the inner wall of the mounting base (3) in a clamping mode, plastic rods (6) are arranged on the inner wall of the springs (5) in an penetrating mode, buffer grooves (7) are formed in the inner wall of the plastic rods (6), and one end of each plastic rod (6) is fixedly connected with one side of the drill bit base (1).

2. The high-strength curved hole twist drill according to claim 1, wherein a clamping shaft (8) is fixedly arranged at the middle position of the other side of the outer wall of the drill base (1) in the installation base (3), and the outer wall of one end of the plastic rod (6) penetrates through the inner wall of the clamping shaft (8) to be fixedly connected with the inner wall of the drill base (1).

3. A high strength curved hole twist drill as claimed in claim 2, wherein the outer wall of the clamping shaft (8) is provided with a plurality of four second screw holes (9) equidistantly spaced.

4. The high-strength curved hole twist drill according to claim 1, wherein the inner wall of the drill base (1) is provided with a weight-reducing groove (10), one side of the inner wall of the weight-reducing groove (10) is fixedly provided with a plurality of reinforcing shafts (11) at equal intervals, and one end of each reinforcing shaft (11) is fixedly connected with the other side of the inner wall of the weight-reducing groove (10) respectively.

5. The high-strength curved hole twist drill according to claim 1, wherein the inner walls of the four first screw holes (4) are respectively penetrated with bolts (12), the outer walls of one ends of the four bolts (12) respectively penetrate through the inner walls of the four first screw holes (4) and the inner walls of the four second screw holes (9), and a fixed shaft (13) is fixedly arranged at one end of the spring (5).

6. The high-strength curved hole twist drill as claimed in claim 5, wherein a driving shaft (14) is fixedly arranged at the middle position of one end of the fixing shaft (13), and four clamping strips (15) are fixedly arranged on the outer wall of the driving shaft (14) at equal intervals.