Step drill for metal machining

Abstract

The utility model discloses a step drill for metal processing, which belongs to the technical field of step drills and comprises a mounting seat and a drill bit, the drill bit is positioned at the bottom of the mounting seat, the top of the drill bit is fixedly connected with a drill handle, the drill handle penetrates through and extends into the mounting seat, two mounting grooves are arranged on the inner wall of the mounting seat, and the mounting grooves are communicated with the mounting seat. The inner walls of the two mounting grooves are slidably connected with fit blocks correspondingly, and fit grooves are formed in the left side and the right side of the drill handle correspondingly. According to the utility model, the wedging block can move through the arrangement of the reset spring, automatic clamping of the wedging block and the wedging groove is realized in the process of upward movement of the drill handle, rapid installation of the drill bit is completed, replacement and maintenance of the drill bit are facilitated, and protection of the drill bit is realized through rapid connection of the protective sleeve. The drill bit is prevented from being collided or corroded by dust when not used, and the problems that an existing step drill for metal machining is inconvenient to disassemble and does not have a protection function are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of step drill, more specifically, relate to a step drill for metal processing. BACKGROUND

[0002] The step drill adopts multistage step type cutting edge, can cut out different diameter holes, and can also composite drilling and reaming into one feeding processing, so it is widely used in decoration, hardware, automobile and other industries, and is used for processing metal.

[0003] But the step drill in the prior art needs to be installed with the cutter barrel first when using, and the traditional installation mode of the step drill is too cumbersome, a step drill can be installed only after a large amount of time is consumed, so that the work efficiency is greatly reduced, and the step drill bit is exposed to the air during non-use, so that the service life of the drill bit is affected by collision or dust erosion, therefore, the technical personnel provides a step drill for metal processing to solve the problems. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims at providing a step drill for metal processing to solve the problems of inconvenient disassembly and lack of protection of the step drill for metal processing.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0006] A step drill for metal processing, including mounting seat and drill bit, the drill bit is located at the bottom of the mounting seat, the top of the drill bit is fixedly connected with the drill handle, the drill handle penetrates and extends to the inside of the mounting seat, two installation grooves are formed in the inner wall of the mounting seat, the inner wall of the two installation grooves is slidably connected with the fitting block, the left and right sides of the drill handle are provided with fitting grooves, the fitting block penetrates the installation groove and extends to the inside of the fitting groove, the inner wall of the installation groove is fixedly connected with the reset spring, the other end of the reset spring is fixedly connected with the fitting block, the fitting block is fixedly connected with the extension rod on one side of the installation groove, the extension rod is located in the reset spring, the other end of the extension rod penetrates and extends to the outside of the mounting seat, the bottom of the mounting seat is provided with a protective sleeve, the drill bit is located in the protective sleeve, an annular groove is formed in the bottom of the mounting seat, two circular grooves are formed in the bottom of the mounting seat, the inside of the circular groove is communicated with the inside of the annular groove, the top of the protective sleeve is fixedly connected with two connecting columns, the top of the two connecting columns penetrates and extends to the inside of the annular groove, the connecting column and the inner wall of the annular groove are slidably connected, two magnetic force strips are fixedly connected on the inner wall of the annular groove, a through hole is formed in the connecting column, the magnetic force strip is located in the through hole and is magnetically connected with the inner wall of the through hole.

[0007] As a further description of the above technical solutions: the left and right sides of the drill handle are rotatably connected with guide rollers, and the guide rollers are located on the top of the fitting block.

[0008] As a further description of the above technical solutions: the inner top wall of the mounting groove is provided with a sliding groove, the sliding groove is slidably connected with a sliding strip, and the bottom of the sliding strip is fixedly connected with the fitting block.

[0009] As a further description of the above technical solutions: the protective sleeve is fixedly connected with a rubber sleeve, and the rubber sleeve is provided with uniformly distributed anti-skid lines.

[0010] As a further description of the above technical solutions: the inner wall of the annular groove is provided with a limiting groove, the connecting column is fixedly connected with a limiting strip, and the limiting strip is located in the limiting groove and is slidably connected with the inner wall of the limiting groove.

[0011] As a further description of the above technical solutions: the connecting column is made of a metal material.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] The present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0015] Figure 2 It is a front view cross-sectional structure schematic diagram of the present application;

[0016] Figure 3 It is a Figure 2 enlarged structure schematic diagram of A in the present application;

[0017] Figure 4 It is a Figure 2 enlarged structure schematic diagram of B in the present application;

[0018] Figure 5 It is an annular groove cross-sectional structure schematic diagram of the present application.

[0019] Explanation of figure numbers:

[0020] 1, mounting seat; 2, drill; 3, drill handle; 4, mounting groove; 5, fitting block; 6, fitting groove; 7, return spring; 8, extension rod; 9, protective sleeve; 10, annular groove; 11, circular groove; 12, connecting column; 13, magnetic strip; 14, through hole; 15, guide roller; 16, sliding groove; 17, sliding bar; 18, rubber sleeve; 19, limiting groove; 20, limiting strip. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] Please refer to Figures 1 to 5 In the utility model, a step drill for metal processing, including mounting seat 1 and drill 2, drill 2 is located at the bottom of mounting seat 1, the top of drill 2 is fixedly connected with drill handle 3, drill handle 3 penetrates and extends to the inside of mounting seat 1, two mounting grooves 4 are formed on the inner wall of mounting seat 1, the inner wall of two mounting grooves 4 is slidably connected with fitting block 5, the left and right sides of drill handle 3 are formed with fitting groove 6, fitting block 5 penetrates mounting groove 4 and extends to the inside of fitting groove 6, return spring 7 is fixedly connected on the inner wall of mounting groove 4, the other end of return spring 7 is fixedly connected on fitting block 5, extension rod 8 is fixedly connected on the side of fitting block 5 in mounting groove 4, extension rod 8 is located in return spring 7, the other end of extension rod 8 penetrates and extends to the outside of mounting seat 1, the bottom of mounting seat 1 is provided with protective sleeve 9, drill 2 is located in the inside of protective sleeve 9, the bottom of mounting seat 1 is formed with annular groove 10, the bottom of mounting seat 1 is formed with two circular grooves 11, the inside of circular groove 11 is communicated with the inside of annular groove 10, the top of protective sleeve 9 is fixedly connected with two connecting columns 12, the top of two connecting columns 12 penetrates and extends to the inside of annular groove 10, connecting column 12 is slidably connected with the inner wall of annular groove 10, two magnetic strips 13 are fixedly connected on the inner wall of annular groove 10, through hole 14 is formed on connecting column 12, magnetic strip 13 is located in the inside of through hole 14 and is magnetically connected with the inner wall of through hole 14.

[0023] The utility model discloses a metal processing drill bit 2 is connected in the bottom of mounting seat 1 when needing, and the user holds up drill bit 2 to the bottom of mounting seat 1, then moves upwards drill bit 2, makes the drill handle 3 of drill bit 2 top enters the inside of mounting seat 1, along with the continuous pushing of user drill handle 3 contact to fit block 5, fit block 5 starts moving towards the inside of mounting groove 4 under stress, reset spring 7 shrink under stress and produce opposite force at the same time, when drill handle 3 moves to the peak and the inner wall of mounting seat 1 is pasted, fit groove 6 is consistent with fit block 5 height at this time, reset spring 7 starts to push fit block 5 without restriction, fit block 5 and top into fit groove 6 inside, thereby make drill handle 3 unable to move downwards, complete the installation of drill bit 2, then the user connects with drive and can drive drill bit 2 to metal material and process, when needing to take down drill bit 2, the user pulls the extension rod 8 of both sides simultaneously, fit block 5 starts into the inside of mounting groove 4 under stress, along with the continuous pulling of user fit block 5 and fit groove 6 are separated, immediately drill handle 3 is separated from the inside of mounting seat 1, when not processing metal material, the user holds up protective sleeve 9 to the bottom of mounting seat 1, makes drill bit 2 be located in the inside of protective sleeve 9, then the user inserts connecting column 12 into circular groove 11 inside and starts rotating protective sleeve 9, connecting column 12 rotates in annular groove 10 until magnetic force strip 13 penetrates through hole 14, at this time, magnetic force strip 13 and connecting column 12 are mutually attracted, thereby limiting protective sleeve 9, when needing to take down protective sleeve 9, the user reversely rotates protective sleeve 9, makes connecting column 12 rotate to the inside of circular groove 11 after protective sleeve 9 is separated downwards and can, solve the problem that the previous metal processing step drill is inconvenient to disassemble and does not have the protection function.

[0024] Please refer to Figure 2 With 3 Among them: the left and right sides of drill handle 3 are rotatably connected with guide rollers 15, and the guide rollers 15 are located at the top of the fit block 5.

[0025] In the utility model, when the drill handle 3 enters the inside of the mounting seat 1, the guide roller 15 at the top of the drill handle 3 will first contact the inclined surface of the fit block 5. In the process of moving the drill handle 3, the guide roller 15 will extrude the fit block 5, and the guide roller 15 will rotate by itself, thereby reducing the friction and facilitating the installation of the drill handle 3.

[0026] Please refer to Figure 2 With 3 Among them: the inner top wall of the mounting groove 4 is provided with a sliding groove 16, the sliding groove 16 is slidably connected with a sliding strip 17, and the bottom of the sliding strip 17 is fixedly connected with the fit block 5.

[0027] The sliding bar 17 also moves in the sliding groove 16 when the fitting block 5 moves, and the cooperation between the sliding bar 17 and the sliding groove 16 can limit the fitting block 5, so that the fitting block 5 always moves in the horizontal direction inside the mounting groove 4.

[0028] Please refer to Figure 1 The rubber sleeve 18 is fixedly connected to the protective sleeve 9, and the anti-skid lines are evenly distributed on the rubber sleeve 18.

[0029] When the user needs to operate the protective sleeve 9, the rubber sleeve 18 can provide a good force point for the user, and the anti-skid lines can prevent the user from slipping.

[0030] Please refer to Figure 2 , 4 The limiting groove 19 is formed in the inner wall of the annular groove 10, the limiting strip 20 is fixedly connected to the connecting column 12, and the limiting strip 20 is located in the limiting groove 19 and is in sliding connection with the inner wall of the limiting groove 19.

[0031] When the connecting column 12 moves in the annular groove 10, the limiting strip 20 also moves in the limiting groove 19, and the cooperation between the limiting groove 19 and the limiting strip 20 can limit the connecting column 12, so that the connecting column 12 can stably rotate in the annular groove 10 and cannot be separated from the annular groove 10, thereby limiting the connecting column 12.

[0032] Please refer to Figure 2 , 4 The connecting column 12 is made of metal material.

[0033] In the utility model, the metal connecting column 12 can be used in cooperation with the magnetic strip 13, and when the magnetic strip 13 is located in the through hole 14 of the connecting column 12, the magnetic strip 13 is in magnetic connection with the inner wall of the through hole 14, thereby further limiting the connecting column 12.

[0034] Working principle: when the drill bit 2 for processing metal needs to be connected at the bottom of the mounting seat 1, the user holds the drill bit 2 to the bottom of the mounting seat 1, and then moves the drill bit 2 upward, so that the drill handle 3 at the top of the drill bit 2 enters the inside of the mounting seat 1, and as the user continues to push the drill handle 3 to contact the engagement block 5, the engagement block 5 starts to move towards the inside of the mounting groove 4 under force, and the return spring 7 is contracted under force while generating an opposite force, when the drill handle 3 moves to the peak and is attached to the inner wall of the mounting seat 1, at this time the engagement groove 6 is consistent with the engagement block 5, the return spring 7 starts to push the engagement block 5 without restriction, and the engagement block 5 is inserted into the inside of the engagement groove 6, so that the drill handle 3 cannot be moved downward, the installation of the drill bit 2 is completed, and then the user can connect the mounting seat 1 with the drive to drive the drill bit 2 to process metal materials, when the drill bit 2 needs to be removed, the user pulls the extension rods 8 on both sides at the same time, the engagement block 5 starts to enter the inside of the mounting groove 4 under force, and as the user continues to pull the engagement block 5 away from the engagement groove 6, the drill handle 3 is separated from the inside of the mounting seat 1, when the metal material is not processed, the user holds the protective sleeve 9 to the bottom of the mounting seat 1, so that the drill bit 2 is located in the inside of the protective sleeve 9, then the user inserts the connecting column 12 into the circular groove 11 and starts to rotate the protective sleeve 9, the connecting column 12 rotates in the annular groove 10 until the magnetic strip 13 penetrates through the through hole 14, at this time the magnetic strip 13 and the connecting column 12 are attracted to each other, so as to limit the protective sleeve 9, when the protective sleeve 9 needs to be removed, the user reversely rotates the protective sleeve 9, so that the connecting column 12 rotates into the circular groove 11, and then the protective sleeve 9 is pulled downward to be separated, which solves the problems that the step drill for metal processing is not convenient to disassemble and does not have a protection function.

[0035] The above merely describes a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical range disclosed in the present application according to the technical scheme and improvement concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A stepped drill for metal working comprising a mounting seat (1) and a drill bit (2) located at the bottom of the mounting seat (1), characterized in that: The top of the drill bit (2) is fixedly connected with a drill handle (3), the drill handle (3) penetrates and extends to the inside of the mounting seat (1), two installation grooves (4) are formed in the inner wall of the mounting seat (1), the inner walls of the two installation grooves (4) are both slidably connected with a matching block (5), the left and right sides of the drill handle (3) are both provided with a matching groove (6), the matching block (5) penetrates the installation groove (4) and extends to the inside of the matching groove (6), a return spring (7) is fixedly connected on the inner wall of the installation groove (4), the other end of the return spring (7) is fixedly connected on the matching block (5), the matching block (5) is fixedly connected with an extension rod (8) on one side of the installation groove (4), the extension rod (8) is located in the return spring (7), the other end of the extension rod (8) penetrates and extends to the outside of the mounting seat (1), a protective sleeve (9) is arranged at the bottom of the mounting seat (1), the drill bit (2) is located in the protective sleeve (9), an annular groove (10) is formed in the bottom of the mounting seat (1), two circular grooves (11) are formed in the bottom of the mounting seat (1), the inside of the circular groove (11) is in communication with the inside of the annular groove (10), two connecting columns (12) are fixedly connected on the top of the protective sleeve (9), the top ends of the two connecting columns (12) both penetrate and extend to the inside of the annular groove (10), the connecting column (12) is slidably connected with the inner wall of the annular groove (10), two magnetic force strips (13) are fixedly connected on the inner wall of the annular groove (10), a through hole (14) is formed in the connecting column (12), the magnetic force strip (13) is located in the through hole (14) and is magnetically connected with the inner wall of the through hole (14).

2. A stepped drill for metal working according to claim 1, characterized in that: The left and right sides of the drill handle (3) are both rotatably connected with a guide roller (15), and the guide roller (15) is located at the top of the matching block (5).

3. A stepped drill for metal working according to claim 1, characterized in that: A sliding groove (16) is formed in the inner top wall of the installation groove (4), and a sliding strip (17) is slidably connected in the sliding groove (16).

4. The stepped drill for metal working according to claim 1, wherein: A rubber sleeve (18) is fixedly connected on the protective sleeve (9), and anti-skid lines are uniformly formed on the rubber sleeve (18).

5. A stepped drill for metal working according to claim 1 wherein: A limiting groove (19) is formed in the inner wall of the annular groove (10), and a limiting strip (20) is fixedly connected on the connecting column (12), and the limiting strip (20) is located in the limiting groove (19) and is slidably connected with the inner wall of the limiting groove (19).

6. A stepped drill for metal working according to claim 1 wherein: The connecting column (12) is made of metal material.

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