Perforating drill improved structure facilitating scrap removal

Abstract

The utility model discloses an improved structure of a punching drill convenient for chip removal, which comprises a drill body, a center drill arranged at the top of the drill body, a connecting piece sleeved outside the drill body, a straight-through hole arranged in the connecting piece, the whole drill body with the center drill can slide up and down relative to the straight-through hole, and a fixed seat sleeved at the lower part of the connecting piece, a clamping ring groove is formed in the middle of the drill body; a mounting groove is formed in the bottom of the fixing seat, communicating holes are formed in the two sides, corresponding to the mounting groove, of the connecting piece respectively, a ball is arranged in each communicating hole, and the diameter of each ball is larger than the length of the corresponding communicating hole; an elastic outer clamping assembly is installed in the installation groove, and the action of the elastic outer clamping assembly can push the balls to further move inwards relative to the communicating holes or relieve the inward pushing effect on the balls. According to the design, an external separable clamping structure is adopted, the overall strength of the drill body can be effectively improved on the premise that it is guaranteed that the center drill and the drill body conduct axial telescopic motion relative to the outer hole drill, and the service life of the drill body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of punching drills of convenient desquamation, specifically a kind of punching drill improvement structure of convenient desquamation. BACKGROUND

[0002] Patent CN202322511096.5 discloses a kind of convenient desquamation telescopic punching drill, and specifically discloses drill body, the top of drill body is fixedly installed with a center drill, drill body is equipped with a connecting piece, connecting piece is equipped with straight-through hole, the entire drill body with the center drill of front end can slide up and down relative to straight-through hole, the outer wall of connecting piece is provided with the outer thread of installation outer hole drill and cap sleeve, the lower part of outer thread is connected with a fixed seat;The inside of drill body is equipped with center hole, drill body lower segment is equipped with transverse sliding slot that penetrates left and right of drill body on the two sides of center hole, the top of transverse sliding slot is equipped with clamping hole, the maximum aperture of clamping hole is greater than the width of transverse sliding slot;The fixed seat and clamping hole are provided with the drill body locking structure that can be separated.Between the above structure design center drill and drill body can be relative to the axial telescopic action of outer hole drill, to realize quick desquamation operation.

[0003] In the above structure, the setting of transverse sliding slot on drill body can seriously affect the overall strength of drill body, when the torque of punching is too large in actual use, it is easy to cause the transverse sliding slot part of drill body to occur distortion and damage, which will seriously affect the service life of punching drill, and also brings great inconvenience to actual punching use. UTILITARY MODEL CONTENT

[0004] In view of the above problems, the utility model designs a kind of improvement structure of punching drill of convenient desquamation, which adopts external separable clamping structure, to effectively improve the overall strength of drill body under the premise of ensuring that center drill and drill body relative to the axial telescopic action of outer hole drill, prolong the service life of drill body.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] The utility model provides a kind of improved structure of convenient desquamation punch drill, including drill body, the top of drill body is fixedly installed with a center drill, drill body is equipped with a connecting piece, connecting piece is equipped with straight-through hole, the entire drill body with the center drill of front end can slide up and down relative to straight-through hole, it is characterized in that: the lower part of connecting piece is equipped with a non-rotatable fixed seat, the middle part of drill body is equipped with a clamping ring groove;The bottom of fixed seat is equipped with a mounting groove, connecting piece is equipped with a communicating hole in the two sides corresponding the mounting groove, each communicating hole is equipped with a ball, the diameter of ball is greater than the length of communicating hole;The mounting groove is installed with a elastic outer clamping component, the action of the elastic outer clamping component can push ball to further move in or remove the inner push of ball, when ball further moves in, part of ball enters the clamping ring groove on drill body and realizes the locking of connecting piece to drill body, when ball moves out and completely separates from the clamping ring groove of drill body, remove the locking of connecting piece to drill body.

[0007] More specifically, the front side of the mounting groove is provided with a front opening, and the two sides of the mounting groove are provided with side grooves;The elastic outer clamping component includes a ring-shaped buckle that is sleeved outside the fixed seat, the front end of the ring-shaped buckle is provided with a button at the front opening of the mounting groove, the two sides of the ring-shaped buckle are symmetrically provided with connecting protrusions that extend into the corresponding side grooves, a return spring is arranged between the connecting protrusions and the rear walls of the side grooves, the return spring has a pre-compression amount to make the ring-shaped buckle always tend to move forward, the inner holes of the ring-shaped buckle are provided with unlocking clamping grooves, the positions of the unlocking clamping grooves are offset from the positions of the communicating holes on the connecting piece in the initial state, and pressing the button to move the ring-shaped buckle backward can make the positions of the unlocking clamping grooves correspond to the positions of the communicating holes on the connecting piece.

[0008] More specifically, the mounting groove of the fixed seat is provided with a fixed plate below the ring-shaped buckle, and the bottom of the connecting piece is provided with a limiting groove, a clamping spring is arranged on the limiting groove to limit the installation of the fixed plate.

[0009] More specifically, the upper part of the connecting piece is provided with an external screw, and an outer hole drill is installed on the external screw through a cap sleeve assembly.

[0010] The utility model discloses a kind of improved structure of convenient desquamation punch drill, including drill body, the top of drill body is fixedly installed with a center drill, drill body is equipped with a connecting piece, connecting piece is equipped with straight-through hole, the entire drill body with the center drill of front end can slide up and down relative to straight-through hole, it is characterized in that: the lower part of connecting piece is equipped with a non-rotatable fixed seat, the middle part of drill body is equipped with a clamping ring groove;The bottom of fixed seat is equipped with a mounting groove, connecting piece is equipped with a communicating hole in the two sides corresponding the mounting groove, each communicating hole is equipped with a ball, the diameter of ball is greater than the length of communicating hole;The mounting groove is installed with a elastic outer clamping component, the action of the elastic outer clamping component can push ball to further move in or remove the inner push of ball, when ball further moves in, part of ball enters the clamping ring groove on drill body and realizes the locking of connecting piece to drill body, when ball moves out and completely separates from the clamping ring groove of drill body, remove the locking of connecting piece to drill body.

[0011] The punch drill with the above structure is provided with only one ring-shaped clamping groove on the drill body, which does not significantly affect the overall strength of the drill body, can ensure the overall strength of the drill body, avoid distortion during punching, and effectively prolong the service life of the punch drill. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1, the three-dimensional structure schematic diagram of the utility model;

[0013] Figure 2 , the three-dimensional structure exploded schematic diagram of the utility model;

[0014] Figure 3 , the sectional view of the utility model;

[0015] Figure 4 , the three-dimensional structure schematic diagram of the utility model fixed seat and elastic outer engagement assembly;

[0016] Figure 5 , the sectional view of the utility model fixed seat and elastic outer engagement assembly;

[0017] Figure 6 , the sectional view of the utility model fixed seat and elastic outer engagement assembly;

[0018] Wherein, 1-drill body, 11-ring slot, 2-center drill, 3-connector, 31-straight hole, 32-external thread, 33-communication hole, 34-ball, 35-limiting groove, 351-clamp spring, 4-hat sleeve assembly, 5-outer hole drill, 6-fixed seat, 61-mounting groove, 611-front opening, 612-side slot, 8-elastic outer engagement assembly, 8a-ring buckle, 8a1-button, 8a2-connection protrusion, 8a3-return spring, 8a4-unlock slot, 8b-fixed plate. DETAILED DESCRIPTION

[0019] As Figures 1-6 The utility model discloses a punch drill convenient to desquamate improvement structure, including drill body 1, the top fixed mounting of drill body 1 is a center drill 2, and drill body 1 is equipped with a connector 3, and the straight hole 31 is arranged in the connector 3, and the whole drill body 1 with the center drill 2 of the front end can slide up and down relative to the straight hole 31, the outer wall of connector 3 is provided with the external thread 32 on the upper part, and the upper part of external screw 32 is installed with outer hole drill 5 through the hat sleeve assembly 4, and the lower part of connector 3 is sleeved with the fixed seat 6 of non-rotatable, here, to realize that fixed seat 6 is non-rotatable relative to connector 3, and the connecting surface of triangle, square, hexagon or octagon can be used between the both, and in actual, according to the need selected.

[0020] The middle part of drill body 1 is provided with a ring slot 11 for locking and engaging between connector 3.

[0021] The fixed seat 6 is provided with a mounting groove 61.

[0022] The connecting piece 3 is provided with a through hole 33 on each side corresponding to the mounting groove 61, and each through hole 33 is provided with a ball 34. In this case, in order to realize the clamping action of the ball 34, the diameter of the ball 34 is greater than the length of the through hole 33, and the inward movement of the ball 34 relative to the through hole 33 can make a part of the spherical crown of the ball 34 protrude into the inner hole of the connecting piece 3 and be clamped and connected with the clamping ring groove 11 on the drill body 1, and the outward movement of the ball 34 relative to the through hole 33 can make the ball 34 completely separate from the inner hole of the connecting piece 3 and be separated from the clamping ring groove 11 on the drill body 1.

[0023] The mounting groove 61 is mounted with an elastic outer clamping assembly 8, and the action of the elastic outer clamping assembly 8 can push the ball 34 to further move inward relative to the through hole 33 or release the inward pushing action on the ball 34, when the ball 34 further moves inward, a part of the spherical crown of the ball 34 enters the clamping ring groove 11 on the drill body 1 to realize the locking of the connecting piece 3 on the drill body 1, and when the ball 34 moves outward and completely separates from the clamping ring groove 11 on the drill body 1, the locking of the connecting piece 3 on the drill body 1 is released.

[0024] The front side of the mounting groove 61 is provided with a front opening 611, and the two sides of the mounting groove 61 are provided with side grooves 612.

[0025] The elastic outer clamping assembly 8 comprises a ring-shaped buckle 8a arranged outside the fixing seat, the front end of the ring-shaped buckle 8a is provided with a button 8a1 at the front opening part of the mounting groove 61, the two sides of the ring-shaped buckle 8a are symmetrically provided with connecting protrusions 8a2, the connecting protrusions 8a2 and the rear walls of the side grooves 712 are provided with reset springs 8a3, and the reset springs 8a3 have a pre-compression amount to make the ring-shaped buckle 8a have a tendency to always move forward.

[0026] The inner hole of the ring-shaped buckle 8a is provided with an unlocking clamping groove 8a4 on both sides, and the position of the unlocking clamping groove 8a4 is offset from the position of the through hole 33 on the connecting piece 3 in the initial state, at this time, the inner hole wall of the ring-shaped buckle 8a will extrude the ball 34 to move inward to realize the locking of the connecting piece 3 on the drill body 1.

[0027] In use, when the ring-shaped buckle 8a is pushed to move backward by pressing the button 8a1, the position of the unlocking clamping groove 8a4 can be corresponded to the position of the through hole 33 on the connecting piece 3, at this time, the inward pushing action of the ring-shaped buckle 8a on the ball 34 is released, the ball 34 can move outward along the through hole 33 to be separated from the clamping ring groove 11 of the drill body 1, and at this time, the drill body 1 with the front end center drill 2 can slide downward relative to the through hole 31 of the connecting piece 3 to realize the inward shrinking operation.

[0028] In summary, the elastic outer clamping assembly is arranged, when the ball 34 is pushed to move inward, the locking of the connecting piece 3 on the drill body 1 is realized, and when the inward pushing action on the ball 34 is released, the locking of the connecting piece 3 on the drill body 1 is released, so that the fast inward shrinking operation of the center drill 2 and the drill body 1 relative to the outer hole drill 5 is realized.

[0029] The drill body 1 provided with the above structure is provided with only one ring of the clamping ring groove 11, which does not have a great influence on the overall strength of the drill body 1, can ensure the overall strength of the drill body 1, avoids the twist and deformation of the drill body during the punching process, and can effectively prolong the service life of the punching drill.

[0030] The mounting groove 61 of the fixing seat 6 is provided with a fixing plate 8b below the annular buckle 8a, the bottom of the connecting piece 3 is provided with a limiting groove 35, the limiting groove 35 is provided with a clamping spring 351 to realize the mounting limiting of the fixing plate 8b, and finally realizes the fixed installation of the annular buckle 8a in the mounting groove 61.

[0031] The above is only a preferred embodiment of the present application, and does not limit the application in any form. Any simple modification, equivalent change or modification made according to the technical principle of the present application to the above embodiment still belongs to the scope of the technical scheme of the present application.

Claims

1. An improved structure for a drilling drill that facilitates chip removal, comprising a drill body (1), a center drill (2) fixedly mounted on the top of the drill body (1), a connector (3) sleeved on the drill body (1), a through hole (31) provided in the connector (3), the entire drill body (1) with the center drill (2) at the front end being able to slide up and down relative to the through hole (31), characterized in that: The lower part of the connecting piece (3) is sleeved with a non-rotatable fixing seat (6), the middle part of the drill body (1) is provided with a clamping ring groove (11); the bottom of the fixing seat (6) is provided with a mounting groove (61), the connecting piece (3) is provided with a communication hole (33) on each side corresponding to the mounting groove (61), a ball (34) is arranged in each communication hole (33), the diameter of the ball (34) is greater than the length of the communication hole (33); an elastic outer clamping assembly (8) is mounted in the mounting groove (61), the action of the elastic outer clamping assembly (8) can push the ball (34) to further move inward relative to the communication hole (33) or release the inward pushing action of the ball (34), when the ball (34) further moves inward, part of the ball enters the clamping ring groove (11) on the drill body (1) to realize the locking of the connecting piece (3) on the drill body (1), when the ball (34) moves outward and completely separates from the clamping ring groove (11) of the drill body (1), the locking of the connecting piece (3) on the drill body (1) is released.

2. The improved structure of a perforated drill for easy desquamation according to claim 1, characterized in that: The front side of the mounting groove (61) is provided with a front opening (611), and the two sides of the mounting groove (61) are provided with side grooves (612); the elastic outer clamping assembly (8) comprises a ring-shaped buckle (8a) arranged outside the connecting piece (3), the front end of the ring-shaped buckle (8a) is provided with a button (8a1) at the front opening (611) of the mounting groove, the two sides of the ring-shaped buckle (8a) are symmetrically provided with connecting protrusions (8a2), the connecting protrusions (8a2) extend into the corresponding side grooves (612), reset springs (8a3) are arranged between the connecting protrusions (8a2) and the rear walls of the side grooves (612), the reset springs (8a3) have a pre-compression amount to make the ring-shaped buckle (8a) always move forward, the inner holes of the ring-shaped buckle (8a) are provided with unlocking clamping grooves (8a4), the positions of the unlocking clamping grooves (8a4) are offset from the positions of the communication holes (33) on the connecting piece (3) in the initial state, pressing the button (8a1) to push the ring-shaped buckle (8a) to move backward can make the positions of the unlocking clamping grooves (8a4) correspond to the positions of the communication holes (33) on the connecting piece (3).

3. The improved structure of a perforated drill for easy desquamation according to claim 2, characterized in that: The mounting groove (61) of the fixing seat (6) is provided with a fixing plate (8b) below the ring-shaped buckle (8a), the bottom of the connecting piece (3) is provided with a limiting groove (65), the limiting groove (65) is provided with a clamping spring (651) to realize the installation limiting of the fixing plate (8b).

4. A modified structure of a perforating drill for easy desquamation according to any one of claims 1 to 3, characterized in that: The outer wall of the connecting piece (3) is partially provided with an outer screw (32), and the outer hole drill (5) is mounted on the outer screw (32) through a cap sleeve assembly (4).

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