CN214815116U - Machine presss from both sides formula flat bottom drilling blade - Google Patents

Abstract

The utility model discloses a machine presss from both sides formula flat bottom drilling blade, include: the drill rod comprises a drill rod main body, a mounting groove, a blade mechanism, a center pin and a fixing screw; the mounting groove is formed in the left side of the drill rod main body, and the inner cavity of the mounting groove is communicated with the outer wall of the drill rod main body; the blade mechanism is arranged in the inner cavity of the mounting groove; the center pin is arranged at the center of the left side of the inner cavity of the mounting groove; the number of the fixing screws is two, the two fixing screws are respectively in threaded connection with the upper end and the lower end of the left side of the drill rod main body, and the rear sides of the fixing screws extend into the inner cavities of the mounting grooves. This machine presss from both sides formula flat drilling blade can improve the centering effect of flat drilling blade, and more steady one shot forming hole bottom when making flat drilling improves machining efficiency to blade wearing and tearing can be ground alone or change the blade, need not the whole root of intercommunication drilling rod and change, reduce and use and maintenance cost, the practicality is strong.

Description

Machine presss from both sides formula flat bottom drilling blade

Technical Field

The utility model relates to the technical field of machining, specifically be a machine presss from both sides formula flat bottom drilling blade.

Background

The production process of the machine refers to the whole process of manufacturing products from raw materials (or semi-finished products), and for the production of the machine, the production process comprises the transportation and storage of the raw materials, the preparation of the production, the manufacturing of blanks, the processing and heat treatment of parts, the assembly and debugging of the products, the painting and packaging and the like. The content of the production process is very wide, modern enterprises organize production and guide production by using the principle and method of system engineering, the production process is regarded as a production system with input and output, and the process of changing the shape, the size, the position, the property and the like of a production object in the production process to form a finished product or a semi-finished product is called a technological process. The method is a main part of a production process, the process can be divided into casting, forging, stamping, welding, machining, assembling and other processes, the mechanical manufacturing process generally refers to the sum of the machining process of parts and the assembling process of machines, other processes are called as auxiliary processes, such as transportation, storage, power supply, equipment maintenance and the like, the process consists of one or a plurality of processes which are arranged in sequence, and one process consists of a plurality of process steps;

in the prior art, for the processing of the hole that needs the flat bottom, because the spot facing work generally needs the central blade to realize centering effect, so generally use 118 or 120 twist drill to bore to appointed degree of depth earlier, with having flat bottom shaping drill shaping, consequently need two processes to accomplish, and then the processing and processing cost that leads to the hole of flat bottom is higher, the processing cycle is longer, production efficiency has been reduced, or adopt some holistic flat bottom drills, but the coping difficulty behind the current flat ground drill blade wearing and tearing, only scrap whole drilling rod under the unable coping's of breach appearance blade condition, the cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machine presss from both sides formula flat drilling blade to the processing and processing cost in the flat hole of at least solving prior art is higher, and processing cycle is longer, has reduced production efficiency, or adopts a little holistic flat brill, but present flat ground bores the coping difficulty behind the blade wearing and tearing, and the blade appears only scrapping whole drilling rod under the unable coping's of breach condition, the higher problem of cost.

In order to achieve the above object, the utility model provides a following technical scheme: a mechanically clamped flat bottom drilling insert comprising:

a drill rod body;

the mounting groove is formed in the left side of the drill rod main body, and the inner cavity of the mounting groove is communicated with the outer wall of the drill rod main body;

the blade mechanism is arranged in the inner cavity of the mounting groove;

the center pin is arranged at the center of the left side of the inner cavity of the mounting groove;

the drilling rod comprises a drilling rod body, a fixing screw, two fixing screws and a connecting rod, wherein the number of the fixing screws is two, the two fixing screws are respectively connected with the upper end and the lower end of the left side of the drilling rod body in a threaded mode, and the rear side of each fixing screw extends into an inner cavity of the corresponding mounting groove.

Preferably, the blade mechanism comprises; the blade comprises a blade body, a positioning groove and a threaded through hole; the blade main body is arranged in the inner cavity of the mounting groove, and the outer side of the blade main body extends out of the inner cavity of the mounting groove; the positioning groove is formed in the center of the right side of the blade main body, and the inner cavity of the positioning groove is sleeved with the outer wall of the center pin; the number of the thread through holes is two, the two thread through holes are respectively arranged on the upper side and the lower side of the right end of the front side of the blade main body, and the upper fixing screw and the lower fixing screw are respectively in threaded connection with the thread through holes.

Preferably, the blade mechanism further comprises; the centering device comprises a flat bottom cutting edge, a centering part cutting edge, a centering part front angle surface, a centering part rear angle surface, a rear angle and a guide part; the number of the flat-bottom cutting edges is two, and the two flat-bottom cutting edges are respectively arranged at the upper end and the lower end of the left side of the blade main body; the centering part is arranged at the left center position of the blade main body; the number of the cutting edges of the centering part is two, and the two cutting edges of the centering part are respectively arranged on the left side of the blade body and are positioned on the upper side and the lower side of the centering part; the number of the centering part front corner faces is two, and the two centering part front corner faces are respectively arranged on the left side of the blade main body and are positioned on the front side and the rear side of the centering part; the number of the centering rear angle surfaces is two, the two centering rear angle surfaces are respectively arranged on the left side of the blade main body and positioned on the outer sides of the front angle surfaces of the front centering portion and the rear centering portion, and the front and rear centering rear angle surfaces are respectively communicated with the front angle surface cavities of the front centering portion and the rear centering portion; the number of the rear angles is two, and the two rear angles are respectively arranged on the left sides of the upper end and the lower end of the blade main body; the quantity of guide part is two, two the guide part is seted up respectively at the upper and lower both ends in the left side of blade main part and is located the outside of two upper and lower flat cutting edges.

Preferably, the centering portion front corner surface and the centering portion rear corner surface form a V-shaped corner groove.

Preferably, the inner cavity of the guide part has an inverted cone amount of 0.02mm-0.06 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the mechanically clamped flat bottom drilling blade: the inner cavity of the positioning groove is sleeved on the outer wall of the center pin and is contacted with the outer wall of the center pin so as to avoid radial runout in the processing process of the blade main body, a fixing screw is screwed into the inner cavity of the threaded through hole in the corresponding position to fix the blade main body, so that the replacement of the blade main body is realized, the blade main body is driven to drive the cutting edge of the centering part to rotate by taking the center of the centering part as an axis so as to cut a workpiece and form a conical surface processed on the surface of the workpiece, the centering effect is achieved, the guide part is properly increased to feed after the blade main body is driven to continue to enter the hole for about 20mm-30mm and then plays a supporting role on the blade main body, so that the flat-bottom cutting edge and the relief angle are processed and formed at one time on the workpiece, the processing efficiency is improved, the centering effect of the flat-bottom drill blade can be improved, the hole bottom can be more stably formed at one time during flat-bottom drilling, the processing efficiency is improved, and the blade can be singly polished or replaced, the whole drill rod does not need to be communicated and replaced, the use and maintenance cost is reduced, and the practicability is high.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a front view of the blade mechanism of FIG. 1;

FIG. 4 is a left side view of the blade mechanism of FIG. 1;

fig. 5 is a front view of the blade mechanism of fig. 1.

In the figure: 1. the drill rod comprises a drill rod body, 2, a mounting groove, 3, a blade mechanism, 31, a blade body, 32, a positioning groove, 33, a threaded through hole, 34, a flat bottom cutting edge, 35, a centering part, 36, a centering part cutting edge, 37, a centering part front corner face, 38, a centering part rear corner face, 39, a rear corner, 310, a guide part, 4, a center pin, 5 and a fixing screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-5, the present invention provides a technical solution: a mechanically clamped flat bottom drilling insert comprising: the drill rod comprises a drill rod body 1, a mounting groove 2, a blade mechanism 3, a center pin 4 and a fixing screw 5; the mounting groove 2 is formed in the left side of the drill rod main body 1, and the inner cavity of the mounting groove 2 is communicated with the outer wall of the drill rod main body 1; the blade mechanism 3 is arranged in the inner cavity of the mounting groove 2; the center pin 4 is arranged at the center of the left side of the inner cavity of the mounting groove 2; the quantity of fixed screw 5 is two, and both ends about two fixed screw 5 spiro union are in the left side of drilling rod main part 1 respectively, and the rear side of fixed screw 5 extends into the inner chamber of mounting groove 2.

Preferably, further, the blade mechanism 3 includes; a blade body 31, a positioning groove 32 and a threaded through hole 33; the blade main body 31 is arranged in the inner cavity of the mounting groove 2, and the outer side of the blade main body 31 extends out of the inner cavity of the mounting groove 2; the positioning groove 32 is arranged at the right center of the blade main body 31, and the inner cavity of the positioning groove 32 is sleeved with the outer wall of the center pin 4 to avoid radial run-out of the blade main body 31 in the machining process; the number of the thread through holes 33 is two, the two thread through holes 33 are respectively arranged on the upper side and the lower side of the right end of the front side of the blade main body 31, and the upper fixing screw 5 and the lower fixing screw 5 are respectively screwed with the thread through holes 33, so that the blade main body 31 is fixed and is convenient to replace.

Preferably, the blade mechanism 3 further comprises; a flat bottom edge 34, a centering portion 35, a centering portion edge 36, a centering front corner face 37, a centering rear corner face 38, a rear corner 39 and a guide 310; the number of the flat bottom cutting edges 34 is two, the two flat bottom cutting edges 34 are respectively arranged at the upper end and the lower end of the left side of the blade main body 31, arc-shaped R2 chip curling grooves are formed in the outer sides of the flat bottom cutting edges 34, the tangential front angle is about 20 degrees, and the cutting edges of the flat bottom cutting edges 34 are sharp, so that the chip curling effect is ensured; the centering portion 35 is provided at a left side center position of the blade main body 31; the number of the cutting edges 36 of the centering part is two, the two cutting edges 36 of the centering part are respectively arranged on the left side of the blade body 31 and are positioned on the upper side and the lower side of the centering part 35, the distance between the cutting edge 36 of the centering part and the centering part 35 is L1, so that the drilling centering part is ensured to have an over-center part (a drilling tool must pass through the center to drill), the included angle of the center cutting edge of the cutting edge 36 of the centering part is A, a conical surface with the angle of A height L is machined on a workpiece machining point in the cutting process of the cutting edge, the conical surface plays a centering role in the subsequent drilling of the blade body 31, and the blade body 31 is not eccentric in the machining process; the number of the centering front corner surfaces 37 is two, the two centering front corner surfaces 37 are respectively arranged on the left side of the blade body 31 and positioned on the front side and the rear side of the centering part 35, and the centering front corner surfaces 37 adopt positive front angles of 10-15 degrees; the number of the centering rear corner surfaces 38 is two, the two centering rear corner surfaces 38 are respectively arranged on the left side of the blade body 31 and positioned on the outer sides of the front and rear centering front corner surfaces 37, and the front and rear centering rear corner surfaces 38 are respectively communicated with the inner cavities of the front and rear centering front corner surfaces 37; the number of the rear angles 39 is two, and the two rear angles 39 are respectively arranged on the left sides of the upper end and the lower end of the blade body 31; the number of the guide parts 310 is two, the two guide parts 310 are respectively arranged at the upper end and the lower end of the left side of the blade main body 31 and positioned at the outer sides of the upper flat-bottom cutting edge 34 and the lower flat-bottom cutting edge 34, the flat-bottom cutting edge 34 and the guide parts 310 are provided with an arc R, and the arc R is also in the shape of a hole bottom after a workpiece is formed, so that a sharp corner at the hole bottom is avoided, stress concentration is generated after quenching, and the workpiece is protected.

Preferably, the centering front corner surface 37 and the centering rear corner surface 38 form a V-shaped corner groove, the V-shaped groove can be cut and curled during the machining process, and is more beneficial to discharging of subsequent iron chips, and the upper and lower V-shaped front corners form a chisel edge width of L3 on the machining edge, which is generally 0.3-0.6, so as to ensure the strength of the central edge part.

Preferably, the inner cavity of the guide part 310 has an inverted taper amount of 0.02mm to 0.06mm, so as to support the insert body 31 after the insert body 31 enters the hole, thereby making subsequent drilling more stable and improving the machining effect.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

When the cutter is installed, a worker places the blade mechanism 3 in the installation groove 2, enables the installation groove 33 to be aligned with the fixing screw 5, enables the inner cavity of the positioning groove 32 to be sleeved on the outer wall of the center pin 4 and to be in contact with the outer wall of the center pin 4 to avoid radial jumping in the machining process of the blade main body 31, enables the fixing screw 5 to be screwed into the inner cavity of the threaded through hole 33 in the corresponding position to fix the blade main body 31, when the cutter is used, the centering part 35 is in contact with the center of a machining point of a workpiece, the worker drives the drilling machine to drive the blade main body 31 to drive the cutting edge 36 of the centering part to rotate by taking the center of the centering part 35 as an axis to cut the workpiece, firstly, the workpiece is drilled to be about 0.2mm deep, the cutting edge 36 of the to be centered is formed on a conical surface of the workpiece, the centering effect of the blade main body 31 in the subsequent machining process is achieved, and after the worker drives the blade main body 31 to continuously feed holes by about 20mm-30mm, the guide part 310 of blade main part 31 side plays the supporting role to blade main part 31, the staff can suitably increase and feed, flat blade 34 and relief angle 39 are to work piece one shot forming, and then improve machining efficiency, thereby can improve the centering effect of flat brill blade, more steady one shot forming hole bottom when making flat drilling, improve machining efficiency, and blade wearing and tearing can be ground alone or change the blade, need not to communicate the whole change of drilling rod, reduce and use and maintenance cost, therefore, the clothes hanger is strong in practicability.

In the description of the present invention, it is to be understood that the terms "top end", "bottom end", "one end", "front side", "rear side", "other end", "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "mounted," "screwed," "plugged," "interference fit," "disposed," and the like are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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

Claims (5)

1. A mechanically clamped flat bottom drilling insert comprising:

a drill rod body (1);

the mounting groove (2) is formed in the left side of the drill rod main body (1), and the inner cavity of the mounting groove (2) is communicated with the outer wall of the drill rod main body (1);

the blade mechanism (3) is arranged in the inner cavity of the mounting groove (2);

the center pin (4) is arranged at the center of the left side of the inner cavity of the mounting groove (2);

the drilling rod comprises fixing screws (5), the number of the fixing screws (5) is two, the fixing screws (5) are respectively screwed at the upper end and the lower end of the left side of the drilling rod main body (1), and the rear sides of the fixing screws (5) extend into the inner cavities of the mounting grooves (2).

2. A machine-clamped flat bottom drilling insert according to claim 1, wherein said insert means (3) comprises:

the blade main body (31) is arranged in the inner cavity of the mounting groove (2), and the outer side of the blade main body (31) extends out of the inner cavity of the mounting groove (2);

the positioning groove (32) is formed in the center of the right side of the blade main body (31), and the inner cavity of the positioning groove (32) is sleeved with the outer wall of the center pin (4);

screw through hole (33), the quantity of screw through hole (33) is two, two both sides about the front side right-hand member of blade main part (31), two from top to bottom are seted up respectively to screw through hole (33) fixed screw (5) are respectively in screw through hole (33) looks spiro union.

3. A machine-clamped flat bottom drilling insert according to claim 2, wherein said insert means (3) further comprises:

the number of the flat bottom cutting edges (34) is two, and the two flat bottom cutting edges (34) are respectively arranged at the upper end and the lower end of the left side of the blade main body (31);

a centering portion (35) provided at a left side center position of the blade main body (31);

the number of the centering part cutting edges (36) is two, and the two centering part cutting edges (36) are respectively arranged on the left side of the blade body (31) and positioned on the upper side and the lower side of the centering part (35);

the number of the centering front corner faces (37) is two, and the two centering front corner faces (37) are respectively arranged on the left side of the blade main body (31) and positioned on the front side and the rear side of the centering part (35);

the number of the centering rear corner faces (38) is two, the two centering rear corner faces (38) are respectively arranged on the left side of the blade body (31) and positioned on the outer sides of the front and rear centering front corner faces (37), and the front and rear centering rear corner faces (38) are respectively communicated with the inner cavities of the front and rear centering front corner faces (37);

the number of the rear angles (39) is two, and the two rear angles (39) are respectively arranged on the left sides of the upper end and the lower end of the blade main body (31);

the number of the guide parts (310) is two, two the guide parts (310) are respectively arranged at the upper end and the lower end of the left side of the blade main body (31) and positioned at the outer sides of the upper flat-bottom cutting edges (34) and the lower flat-bottom cutting edges (34).

4. A machine-clamped flat bottom drilling insert according to claim 3, characterized in that the centering front corner face (37) and the centering rear corner face (38) form a V-shaped corner groove.

5. The mechanically clamped flat bottom drilling insert according to claim 3, wherein the cavity of said guide portion (310) has a reverse taper amount of 0.02mm to 0.06 mm.

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