CN219837196U

CN219837196U - bench drill

Info

Publication number: CN219837196U
Application number: CN202321372363.9U
Authority: CN
Inventors: 缪帅涛; 李志敏; 许道波
Original assignee: Taizhou Lishan Machinery Co ltd
Current assignee: Taizhou Lishan Machinery Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-17
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to a bench drill which comprises a frame, a rotating shaft and a protective cover, wherein the rotating shaft is rotationally connected to the frame around the axis of the rotating shaft, the rotating shaft is used for connecting a drill bit, the protective cover is connected to the frame, the protective cover is provided with a working cavity, the working cavity axially penetrates through the protective cover along the rotating shaft, the working cavity is used for allowing the rotating shaft to extend in, and the working cavity is used for accommodating the drill bit connected to the rotating shaft. During drilling, strip-shaped cuttings are generated, and the cuttings rotate along with the rotation of the drill bit; at this moment, rotatory smear metal is located the working chamber, then the protection casing obstructs personnel and is close to rotatory smear metal, realizes reducing the risk of smear metal fish tail personnel. Meanwhile, the bench drill further comprises a motor and a frequency converter, wherein the motor is used for driving the rotating shaft to rotate, and the frequency converter is used for controlling the rotating speed of the motor, so that the rotating speed of the rotating shaft and the rotating speed of the drill bit are controlled.

Description

Bench drill

Technical Field

The utility model relates to the field of drilling equipment, in particular to a bench drill.

Background

Bench drills are a tool for drilling holes.

The prior CN204545486U discloses a single-phase vertical variable-frequency speed regulation bench drill, which comprises a workbench, a motor, a chuck and an operating handle.

The workbench is used for placing a workpiece, the motor is used for driving the chuck to rotate, and the chuck is used for installing a drill bit. The drill bit is controlled to lift by rotating the operating handle, and the workpiece on the workbench is drilled.

During the drilling process, strip-shaped chips are generated; at the same time, the strip-shaped chips rotate along with the rotation of the drill, and the rotating chips risk scratching personnel.

Disclosure of Invention

In order to reduce the risk of cutting scraps scratching personnel in the drilling process, the utility model provides a bench drill.

The utility model provides a bench drill, which adopts the following technical scheme:

the bench drill comprises a frame, a rotating shaft and a protective cover, wherein the rotating shaft is rotationally connected with the frame around the axis of the rotating shaft, the rotating shaft is used for connecting a drill bit, the protective cover is connected with the frame and is provided with a working cavity, the working cavity axially penetrates through the protective cover along the rotating shaft,

the working cavity is used for allowing the rotating shaft to extend in, and is used for accommodating a drill bit connected to the rotating shaft.

By adopting the technical scheme, strip-shaped cuttings are generated in the drilling process and rotate along with the rotation of the drill bit; at this moment, rotatory smear metal is located the working chamber, then the protection casing obstructs personnel and is close to rotatory smear metal, realizes reducing the risk of smear metal fish tail personnel.

Preferably, the protective cover is transparent.

By adopting the technical scheme, personnel can observe the drilling condition in a visual mode, and the drilling quality can be guaranteed.

Preferably, the protection cover is connected to the frame in a sliding manner along the axial direction of the rotating shaft.

By adopting the technical scheme, the position of the protective cover is adjusted to adapt to workpieces with various sizes.

Preferably, the device also comprises a sliding rail and a mounting seat, wherein the mounting seat is connected with the sliding rail in a sliding way, the relative sliding direction between the mounting seat and the sliding rail is parallel to the axial direction of the rotating shaft,

one of the sliding rail and the mounting seat is connected with the frame, and the other is connected with the protective cover.

Through adopting above-mentioned technical scheme, realize that the axial sliding connection of protection casing along the pivot is in the frame to restrict the slip direction of protection casing.

Preferably, the sliding rail pressing device further comprises a locking bolt, wherein the locking bolt is in threaded connection with the mounting seat, the axis of the locking bolt is not parallel to the axis of the rotating shaft, and the locking bolt is used for pressing the sliding rail.

Through adopting above-mentioned technical scheme, based on the position back in order to accomplish the protection casing of work piece, screw up locking bolt to utilize the frictional force locking between locking bolt and the slide rail to the relative position between slide rail and the mount pad.

Preferably, the sliding rail and the mounting seat are both positioned outside the working cavity.

By adopting the technical scheme, the probability of cutting scraps scratching the sliding rail and the mounting seat is reduced.

Preferably, the mounting seat is connected to the frame, and the sliding rail is connected to the protective cover.

By adopting the technical scheme, the acting force of the mounting seat on the sliding rail is mainly used for overcoming the gravity of the sliding rail and the protective cover, and the acting force of the sliding rail on the protective cover is mainly used for overcoming the gravity of the protective cover;

compared with the mounting seat connected with the protective cover, the sliding rail is connected with the frame, and the technical scheme is beneficial to reducing the stress of the sliding rail.

Preferably, the mounting seat comprises a fixing seat and a sleeve, the fixing seat is connected with the frame, the sleeve is rotationally connected with the fixing seat, the sliding rail is slidingly connected with the sleeve, and the rotation axis of the sleeve is parallel to the sliding direction of the sliding rail.

Through adopting above-mentioned technical scheme, the mode of accessible rotation protection casing for the protection casing is kept away from the drill bit, in order to change, maintain the drill bit.

Preferably, the device further comprises a transmission ball and a protective switch, wherein the transmission ball is connected to the mounting seat in a sliding manner, and the sliding direction of the transmission ball is perpendicular to the axis of the sleeve; the protective switch is connected to the mounting seat;

the periphery of the sleeve is provided with an embedding groove which is used for embedding a transmission ball, and under the condition that the transmission ball is embedded in the embedding groove, the transmission ball does not trigger the protection switch; and under the condition that the outer periphery of the sleeve contacts the transmission ball, the transmission ball triggers the protection switch.

Through adopting above-mentioned technical scheme, under the circumstances that protection switch was triggered, bench drill stop work, avoid pivoted drill bit to make personnel injured.

Preferably, the device further comprises an elastic piece, wherein one end of the elastic piece is fixedly connected with the fixed seat, the other end of the elastic piece is used for triggering the protective switch, and the transmission ball is abutted against the elastic piece; and the contact position of the elastic sheet and the transmission ball is positioned between the connection position of the elastic sheet and the fixed seat and the contact position of the elastic sheet and the protective switch.

By adopting the technical scheme, the reset of the transmission ball is realized by utilizing the elastic force of the elastic piece; meanwhile, the small stroke triggering protection switch of the transmission ball is realized by utilizing the lever principle.

Preferably, the lifting device further comprises a lifting handle, wherein the lifting handle is connected to the frame, and the sliding rail is located on one side of the frame, which is away from the lifting handle.

By adopting the technical scheme, the motion interference between the sliding rail and the lifting handle is avoided.

Preferably, the protective cover comprises a main plate, side plates and a shielding plate,

the side plates and the shielding plates are positioned on the same side of the main plate along the thickness direction of the main plate;

the side plates, the main plate and the shielding plate are surrounded to form the working cavity.

Preferably, the lifting device further comprises a lifting handle, the lifting handle is connected to the frame, the shielding plate is located on one side of the side plate, facing the lifting handle, of the lifting handle, and the area of the shielding plate is larger than that of the side plate.

Through adopting above-mentioned technical scheme, under the circumstances of personnel operation lifting handle, the large tracts of land shielding plate does benefit to the risk that reduces the smear metal fish tail personnel.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. during drilling, strip-shaped cuttings are generated, and the cuttings rotate along with the rotation of the drill bit; at the moment, the rotating chips are positioned in the working cavity, so that the protection cover prevents personnel from approaching the rotating chips, and the risk of scratching personnel by the chips is reduced;

2. the protective cover is connected to the frame in a sliding way along the axial direction of the rotating shaft, and the position of the protective cover is adjusted to adapt to workpieces with various sizes;

3. under the condition that personnel operate the lifting handle, the shielding plate with a large area is beneficial to reducing the risk of cutting scraps to scratch personnel.

Drawings

Fig. 1 is a schematic view of the entire structure of a bench drill.

Fig. 2 is a schematic view of the internal structure of the mounting case.

Fig. 3 is a schematic structural view of the mounting base, the slide rail and the protective cover.

Fig. 4 is a cross-sectional view of the mount.

Reference numerals illustrate: 0. a drill bit; 1. a frame; 11. a base; 12. a column; 13. a mounting box; 14. a safety switch; 21. a motor; 22. a front-end controller; 3. a rotating shaft; 4. a work table; 5. a lifting handle; 6. a mounting base; 61. a through hole; 62. a fixing seat; 621. a mounting port, 622, communication port; 623. a mounting cavity; 63. a sleeve; 631. a caulking groove; 64. a drive ball; 65. a protective switch; 66. a spring plate; 67. a locking hole; 7. a slide rail; 8. a protective cover; 81. a main board; 82. a side plate; 83. a shielding plate; 84. a connecting plate; 841. a connection hole; 85. a working chamber; 9. and (5) locking the bolt.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

Referring to fig. 1, an embodiment of the present utility model discloses a bench drill comprising a frame 1, a motor 21 and a rotary shaft 3.

The frame 1 comprises a base 11, uprights 12 and a mounting box 13. The base 11 is intended to rest on the ground. The upright post 12 is vertical, and the lower end of the upright post 12 is fixedly connected with the base 11. The mounting box 13 is fixedly connected to the upper end of the upright 12.

The housing of the motor 21 is fixedly connected to the mounting box 13 such that the output shaft of the motor 21 is vertical. And the output shaft of the motor 21 extends upward into the interior of the mounting box 13.

The rotating shaft 3 is vertically arranged, and the rotating shaft 3 is rotatably connected to the mounting box 13 around the axis of the rotating shaft 3. The upper end of the rotating shaft 3 extends upward into the inside of the mounting box 13. The lower end of the rotating shaft 3 is used for connecting the drill bit 0.

The motor 21 is used for driving the rotating shaft 3 to rotate. In one embodiment, the installation box 13 is internally provided with a belt transmission mechanism, one belt pulley of which is coaxially connected to the output shaft of the motor 21, and the other belt pulley of which is coaxially connected to the rotating shaft 3.

Meanwhile, in one embodiment, the bench drill further comprises a frequency converter and a front-end controller 22, the front-end controller 22 is used for being operated by a person standing in front of the bench drill, and the front-end controller 22 outputs a control signal to the frequency converter, and the frequency converter is used for controlling the rotating speed of the motor 21 so as to control the drilling speed of the rotating shaft 3 and the drilling speed of the drilling bit 0.

The front-end controller 22 has operating buttons/knobs. The operating button can be an electromagnetic switch/electronic switch and has power-on protection. And (3) electrifying protection: the bench drill stops working due to unexpected power failure, and after the power is recovered, the bench drill can not run, and personnel can only start the bench drill by operating the front-end controller 22 again, so that the safety production is facilitated.

Referring to fig. 2, a safety switch 14 is provided in the installation box 13. The safety switch 14 may be a tact switch, a micro switch, a travel switch, or the like.

When the cover of the mounting box 13 is in the closed state, the cover activates the safety switch 14.

When the belt transmission mechanism is adjusted and maintained, the case cover is opened, the case cover is far away from the safety switch 14, and the front controller 22 cannot receive the signal of the safety switch 14 to control the bench drill to stop working.

The bench drill further comprises a working table 4 and a lifting handle 5. The table 4 is connected to the upright 12. The workbench 4 is positioned right below the rotating shaft 3, and the upper surface of the workbench 4 is used for placing a workpiece. The lifting handle 5 is connected to one side of the mounting box 13, and the lifting handle 5 is used for controlling the lifting of the drill bit 0.

Referring to fig. 1 and 3, the bench drill further comprises a mounting base 6, a slide rail 7 and a protective cover 8.

The mount 6 is provided with a through hole 61, and the axis of the through hole 61 is vertical. The sliding rail 7 is vertically arranged, and the sliding rail 7 slides through the through hole 61.

One of the slide rail 7 and the mounting seat 6 is connected to the side of the mounting box 13 facing away from the lifting handle 5. In this embodiment, the mount pad 6 fixed connection is in the one side of mount pad 13 facing away from lift handle 5, and the lower extreme of slide rail 7 is used for supplying protection casing 8 to connect to make protection casing 8 follow the axial sliding connection of pivot 3 in frame 1.

The protective cover 8 is made of transparent materials, such as: acrylic and glass. The shield 8 includes an integrally formed main plate 81, side plates 82, shielding plates 83, and connection plates 84.

The main plate 81, the side plates 82, the shielding plate 83, and the connection plate 84 are all vertical. The side plate 82, the main plate 81, and the shielding plate 83 are connected in this order. The side plate 82 is perpendicular to the main plate 81, the shielding plate 83 is perpendicular to the main plate 81, and the side plate 82 and the shielding plate 83 are both located on the side of the main plate 81 facing the upright post 12.

The side plate 82, the main plate 81 and the shielding plate 83 enclose a working chamber 85; on the one hand, the working chamber 85 is made to penetrate the protective cover 8 vertically, and on the other hand, the notch of the working chamber 85 is made to face the upright 12. Meanwhile, the working chamber 85 is used for allowing the lower end of the rotating shaft 3 to extend in, and the working chamber 85 is used for accommodating the drill bit 0 connected to the rotating shaft 3.

The side plate 82 is located on the side of the shielding plate 83 facing away from the lifting handle 5, and the area of the shielding plate 83 is larger than that of the side plate 82. In the present embodiment, the heights of the side plate 82, the main plate 81, and the shielding plate 83 are identical, and the width of the shielding plate 83 is larger than the width of the side plate 82.

The connecting plate 84 is perpendicular to the side plate 82, and the connecting plate 84 is located on a side of the side plate 82 facing away from the shielding plate 83. The connecting plate 84 is fixedly connected to the sliding rail 7, so that the sliding rail 7 and the mounting seat 6 are both located outside the working cavity 85. And, the connection plate 84 is located at the middle of the width direction of the side plate 82 so that the side plate 82 shields the surface of the slide rail 7 facing the working chamber 85.

In this embodiment, the connection plate 84 is provided with two connection holes 841 distributed vertically, and bolts pass through the connection holes 841 to be fixedly connected to the slide rail 7.

Referring to fig. 3 and 4, the mount 6 includes a fixed seat 62, a sleeve 63, a driving ball 64, and a protection switch 65.

The fixing base 62 is fixedly connected to the mounting box 13. The axis of the sleeve 63 is vertical, and the sleeve 63 is rotatably connected to the fixing base 62 around its own axis. In this embodiment, the fixing base 62 is provided with a mounting hole 621, and the sleeve 63 is coaxially rotatably embedded in the mounting hole 621. The through hole 61 is disposed at the sleeve 63, that is, the slide rail 7 is slidably embedded in the sleeve 63.

The mounting seat 6 is provided with a mounting cavity 623; the inner wall of the mounting hole 621 is provided with a communication hole 622, the communication hole 622 extends along the radial direction of the mounting hole 621, and the communication hole 622 is communicated with the mounting hole 621 and the mounting cavity 623. The driving ball 64 is slidably inserted into the mounting hole 621, and the diameter of the driving ball 64 is larger than the depth of the mounting hole 621.

The circumference of the sleeve 63 is provided with a caulking groove 631, and the caulking groove 631 is used for embedding the driving ball 64. Meanwhile, in the case where the driving ball 64 is embedded in the embedded groove 631, the driving ball 64 does not extend into the installation cavity 623; the driving ball 64 protrudes into the mounting cavity 623 with the sleeve 63 rotated such that the outer circumference of the sleeve 63 touches the driving ball 64.

A guard switch 65 is located within the mounting cavity 623. The guard switch 65 may be a tact switch, a micro switch, a travel switch, or the like. The drive ball 64 extends into the mounting cavity 623 to activate the guard switch 65.

Meanwhile, in the process of processing the workpiece, the protective cover 8 is covered at the position of the drill bit 0, and at the moment, the caulking groove 631 faces the communication port 622, so that the transmission ball 64 can be embedded in the caulking groove 631; if the protective cover 8 is rotated and the sliding rail 7 and the sleeve 63 are driven to rotate, the periphery of the sleeve 63 contacts the transmission ball 64, the transmission ball 64 stretches into the mounting cavity 623 to trigger the protective switch 65, and the front controller 22 receives signals of the protective switch 65 to control the bench drill to stop working.

In this embodiment, the mounting seat 6 further includes a spring 66, the spring 66 is located in the mounting cavity 623, one end of the spring 66 is fixedly connected to the fixing seat 62, the other end of the spring 66 is used for triggering the protection switch 65, and the transmission ball 64 abuts against the spring 66; and, the contact position of the elastic sheet 66 and the transmission ball 64 is positioned between the connection position of the elastic sheet 66 and the fixed seat 62 and the contact position of the elastic sheet 66 and the protection switch 65.

The bench drill further comprises a locking bolt 9. The sleeve 63 is provided with a locking hole 67, the axis of the locking hole 67 being horizontal. In this embodiment, the lower end of the sleeve 63 extends out of the mounting hole 621, and the locking hole 67 is located outside the fixing base 62.

The locking hole 67 communicates with the through hole 61. The locking bolt 9 is screwed into the locking hole 67, and one end of the locking bolt 9 is used to extend into the through hole 61 and press the slide rail 7. The relative position between the slide rail 7 and the mounting seat 6 is locked by utilizing the friction force between the locking bolt 9 and the slide rail 7.

In this embodiment, the axis of the locking hole 67 is perpendicular to the main plate 81, so that a person standing in front of the bench drill can screw the locking bolt; simultaneously, slide rail 7, through-hole 61 are the rectangle, do benefit to the realization slide rail 7 and drive sleeve 63 rotation.

The implementation principle of the bench drill of the embodiment of the utility model is as follows: during the drilling process, strip-shaped cuttings are generated, and the cuttings rotate along with the rotation of the drill bit 0; at this time, the rotating chips are located in the working chamber 85, and the protection cover 8 prevents people from approaching the rotating chips, so that the risk of scratching people by the chips is reduced.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A bench drill, characterized in that: comprises a frame (1), a rotating shaft (3) and a protective cover (8), wherein the rotating shaft (3) is rotationally connected with the frame (1) around the axis of the rotating shaft, the rotating shaft (3) is used for connecting a drill bit, the protective cover (8) is connected with the frame (1), the protective cover (8) is provided with a working cavity (85), the working cavity (85) axially penetrates through the protective cover (8) along the rotating shaft (3),

the working cavity (85) is used for allowing the rotating shaft (3) to extend in, and the working cavity (85) is used for accommodating a drill bit connected to the rotating shaft (3).

2. The bench drill of claim 1 wherein: the protective cover (8) is transparent.

3. The bench drill of claim 1 wherein: the protective cover (8) is connected to the frame (1) along the axial direction of the rotating shaft (3) in a sliding manner.

4. A bench drill according to claim 3, wherein: the device also comprises a sliding rail (7) and a mounting seat (6), wherein the mounting seat (6) is connected with the sliding rail (7) in a sliding way, the relative sliding direction between the mounting seat (6) and the sliding rail (7) is parallel to the axial direction of the rotating shaft (3),

one of the sliding rail (7) and the mounting seat (6) is connected with the frame (1), and the other is connected with the protective cover (8).

5. The bench drill of claim 4 wherein: the novel sliding rail device is characterized by further comprising a locking bolt (9), wherein the locking bolt (9) is in threaded connection with the mounting seat (6), the axis of the locking bolt (9) is not parallel to the axis of the rotating shaft (3), and the locking bolt (9) is used for extruding the sliding rail (7).

6. The bench drill of claim 4 wherein: the sliding rail (7) and the mounting seat (6) are both positioned outside the working cavity (85).

7. The bench drill of claim 4 wherein: the mounting seat (6) is connected to the frame (1), and the sliding rail (7) is connected to the protective cover (8).

8. The bench drill of claim 4 wherein: the mounting seat (6) comprises a fixed seat (62) and a sleeve (63), the fixed seat (62) is connected with the frame (1), the sleeve (63) is rotationally connected with the fixed seat (62), the sliding rail (7) is slidingly connected with the sleeve (63), and the rotation axis of the sleeve (63) is parallel to the sliding direction of the sliding rail (7).

9. The bench drill of claim 8 wherein: the device also comprises a transmission ball (64) and a protective switch (65), wherein the transmission ball (64) is connected to the mounting seat (6) in a sliding way, and the sliding direction of the transmission ball (64) is perpendicular to the axis of the sleeve (63); the protection switch (65) is connected to the mounting seat (6);

the periphery of the sleeve (63) is provided with an embedding groove (631), the embedding groove (631) is used for embedding a transmission ball (64), and the transmission ball (64) does not trigger the protection switch (65) under the condition that the transmission ball (64) is embedded in the embedding groove (631); the drive ball (64) activates the protective switch (65) when the sleeve (63) is rotated such that the outer circumference of the sleeve (63) touches the drive ball (64).

10. The bench drill of claim 9 wherein: the protective switch further comprises an elastic piece (66), one end of the elastic piece (66) is fixedly connected to the fixed seat (62), the other end of the elastic piece (66) is used for triggering the protective switch (65), and the transmission ball (64) is abutted against the elastic piece (66); and the contact position of the elastic piece (66) and the transmission ball (64) is positioned between the connection position of the elastic piece (66) and the fixed seat (62) and the contact position of the elastic piece (66) and the protection switch (65).