Bench drilling machine

Abstract

The utility model relates to the technical field of drilling machining equipment, in particular to a bench drilling machine which comprises a machine body, the machine body comprises a main shaft and a chuck arranged below the main shaft, the bench drilling machine further comprises a fixing disc, a round hole for the main shaft to pass through is formed in the middle of the fixing disc, and the main shaft penetrates through the round hole of the fixing disc and then is connected with the fixing disc. The chuck is located below the fixing disc, the fixing disc is covered with a first protective cover and a second protective cover, the first protective cover and the second protective cover are in butt joint in a surrounding mode to form a cylinder structure with an opening in the lower portion, and the inner top wall of the cylinder structure is attached to the upper surface of the fixing disc. The top wall of the cylinder structure is provided with a notch for the main shaft to penetrate through, and the inner side wall of the cylinder structure is in sliding fit with the outer wall of the fixing disc in the length direction of the main shaft. A limiting piece is arranged on the cylinder structure and used for limiting the cylinder structure outside the fixing disc. According to the utility model, scraps generated in the drilling process can be prevented from splashing to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling processing equipment, in particular to a desktop drilling machine. Background Art

[0002] The bench drilling machine is called bench drill for short. It refers to a small drilling machine that can be placed on the workbench with the spindle arranged vertically. The bench drilling machine is mainly used for drilling, reaming, tapping, and scraping small and medium-sized parts. It is used in processing workshops and mold repair workshops. Compared with similar machine tools at home and abroad, it has the characteristics of low horsepower, high rigidity, good rigidity, easy operation, and easy maintenance.

[0003] The bench drilling machine mainly includes a machine base, a column, a spindle frame, a spindle and a worktable. The column is vertically arranged on the machine base, and the spindle frame is lifted and lowered on the column. The spindle is arranged at the lower front end of the spindle frame, and the motor is arranged at the rear end. The spindle and the motor are driven by a V-belt. A tapered hole is arranged at the lower end of the spindle for installing a chuck, and the chuck is used to install a drill bit. The speed of the spindle can be adjusted by changing the position of the V-belt on the pulley, and the spindle of the bench drilling machine can be fed manually; the worktable is arranged on the column below the spindle frame, and the worktable is used to place the workpiece.

[0004] In the related art, the most common problem in the process of drilling a workpiece using a benchtop drilling machine is the flying of waste chips. If the workpiece is a wooden structure, the flying of waste chips into the surrounding environment will increase the dust content in the air, causing air pollution, which is not conducive to the health of the operator. In addition, the flying of waste chips from metal and wooden workpieces can easily cause damage to the eyes and other parts of the human body. Utility Model Content

[0005] The utility model aims to provide a bench-type drilling machine to solve the problem of waste chips splashing during the drilling process.

[0006] The utility model is realized by the following technical solutions:

[0007] A bench drilling machine comprises a machine body, the machine body comprises a main shaft and a chuck arranged below the main shaft, and also comprises a fixed plate, a circular hole for the main shaft to pass through is opened in the middle of the fixed plate, the main shaft is connected to the fixed plate after passing through the circular hole of the fixed plate, the chuck is located below the fixed plate, a first protective cover and a second protective cover are provided on the fixed plate, the first protective cover and the second protective cover are combined and connected to form a cylindrical structure with an opening at the bottom, the inner top wall of the cylindrical structure is in contact with the upper surface of the fixed plate, and a notch for the main shaft to pass through is opened on the top wall of the cylindrical structure, the inner side wall of the cylindrical structure is slidably matched with the outer wall of the fixed plate along the length direction of the main shaft; a limiting member is provided on the cylindrical structure, and the limiting member is used to limit the cylindrical structure outside the fixed plate.

[0008] Furthermore, the limiting member includes a first limiting column and a second limiting column, and the first limiting column and the second limiting column both include a column body, a limiting block is provided at one end of the column body, and an external thread is provided on the outer wall of the other end, and the size of the limiting block is larger than the outer diameter of the column body; guide holes are provided on the top walls of the first protective cover and the second protective cover, and threaded holes are provided on the upper surface of the fixed plate at positions corresponding to the two guide holes, and the end of the first limiting column with an external thread passes through the guide hole of the first protective cover and is threadedly connected to the threaded hole below, and the first limiting column is slidably matched with the first protective cover, and the end of the second limiting column with an external thread passes through the guide hole of the second protective cover and is threadedly connected to the threaded hole below, and the second limiting column is slidably matched with the second protective cover.

[0009] Furthermore, ropes are connected to the limiting blocks of the first limiting column and the second limiting column, and hooks are provided on the two ropes, and hanging rings are provided on the first protective cover and the second protective cover. After the cylindrical structure rises, the two hooks can be hooked with the corresponding hanging rings respectively.

[0010] Furthermore, the limiting member includes a first connecting plate and a second connecting plate, the first connecting plate is arranged on the first shield, the second connecting plate is arranged on the second shield, and the first connecting plate and the second connecting plate are connected by bolts.

[0011] Furthermore, the first protective cover and the second protective cover are both made of transparent material.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] In the utility model, the workpiece is first placed on the workbench, the drill bit is installed on the chuck, and then the motor is started to control the spindle frame to descend, so that the spindle, the drill bit and the cylinder structure descend together. When the drill bit abuts against the upper surface of the workpiece, the lower end of the cylinder structure also abuts against the upper surface of the workpiece. When the drill bit is fed downward, relative sliding occurs between the cylinder structure and the fixed plate. At this time, the cylinder structure keeps a stationary position relative to the workpiece, that is, the cylinder structure always keeps a covering and protection for the drill bit, which can prevent the waste chips generated in the process of drilling a hole in the workpiece from splashing until the drill bit completes the drilling operation; when the spindle frame is controlled to rise, the spindle and the drill bit rise first, and before the fixed plate abuts against the inner top wall of the cylinder structure, the cylinder structure remains stationary relative to the workpiece until the fixed plate rises to a certain height and drives the cylinder structure to rise and leave the workpiece surface; when the drill bit needs to be replaced, the cylinder structure can be slid upward to expose the drill bit from the opening below the cylinder structure, and the drill bit can be disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of another embodiment of the utility model.

[0018] Marks and corresponding parts names in the attached drawings:

[0019] 1. Spindle; 2. Chuck; 3. Drill bit; 4. Fixed plate; 5. Round hole; 6. First protective cover; 7. Second protective cover; 8. Cylindrical structure; 9. Notch; 10. First limiting column; 11. Second limiting column; 12. Column; 13. Limiting block; 14. External thread; 15. Guide hole; 16. Threaded hole; 17. Rope; 18. Hook; 19. Hanging ring; 20. First connecting plate; 21. Second connecting plate; 22. Bolt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0021] Example 1

[0022] A benchtop drilling machine, referring to Figure 1 , including a body, the body including a spindle 1 and a chuck 2 arranged below the spindle 1, the drilling machine also includes a fixed disk 4, a circular hole 5 for the spindle 1 to pass through is opened in the middle of the fixed disk 4, the spindle 1 is connected to the fixed disk 4 after passing through the circular hole 5 of the fixed disk 4, the chuck 2 is located below the fixed disk 4, a first protective cover 6 and a second protective cover 7 are provided on the fixed disk 4, the first protective cover 6 and the second protective cover 7 are surrounded and connected to form a cylindrical structure 8 with an opening at the bottom, the inner top wall of the cylindrical structure 8 is in contact with the upper surface of the fixed disk 4, and a notch 9 for the spindle 1 to pass through is opened on the top wall of the cylindrical structure 8, the inner side wall of the cylindrical structure 8 is slidably matched with the outer wall of the fixed disk 4 along the length direction of the spindle 1; a limiting member is provided on the cylindrical structure 8, the limiting member is used to limit the cylindrical structure 8 outside the fixed disk 4, and make the inner side wall of the cylindrical structure 8 always slidably matched with the outer wall of the fixed disk 4.

[0023] In this solution, the workpiece is first placed on the workbench, the drill bit 3 is installed on the chuck 2, and then the motor is started to control the spindle 1 to descend, so that the spindle 1, the drill bit 3 and the cylindrical structure 8 descend together. When the drill bit 3 abuts against the upper surface of the workpiece, the lower end of the cylindrical structure 8 also abuts against the upper surface of the workpiece. When the drill bit 3 is fed downward, relative sliding occurs between the cylindrical structure 8 and the fixed plate 4. At this time, the cylindrical structure 8 remains in a fixed position relative to the workpiece, that is, the cylindrical structure 8 always keeps covering and protecting the drill bit 3, which can be Prevent the waste chips generated by the drill bit 3 in the process of drilling the workpiece from splashing until the drill bit 3 completes the drilling operation; when the main shaft 1 is controlled to rise, the main shaft 1 and the drill bit 3 rise first, and before the fixed plate 4 abuts against the inner top wall of the cylindrical structure 8, the cylindrical structure 8 remains stationary relative to the workpiece until the fixed plate 4 rises to a certain height and drives the cylindrical structure 8 to rise and leave the workpiece surface; when the drill bit 3 needs to be replaced, the cylindrical structure 8 can be slid upward to expose the drill bit 3 from the opening below the cylindrical structure 8, and the drill bit 3 can be disassembled and replaced.

[0024] The first protective cover 6 and the second protective cover 7 are both made of transparent material; when drilling a workpiece, it is convenient for the operator to observe the drilling status of the drill bit 3 from the outside, such as whether the drilling position is correct, whether the feed is sufficient, etc.

[0025] Example 2

[0026] Based on Example 1, in this example, refer to Figure 1 The limiting part includes a first limiting column 10 and a second limiting column 11. The first limiting column 10 and the second limiting column 11 both include a column body 12. A limiting block 13 is provided at one end of the column body 12, and an external thread 14 is provided on the outer wall of the other end. The size of the limiting block 13 is larger than the outer diameter of the column body 12; guide holes 15 are provided on the top walls of the first protective cover 6 and the second protective cover 7, and threaded holes 16 are provided on the upper surface of the fixed plate 4 at positions corresponding to the two guide holes 15. One end of the first limiting column 10 with the external thread 14 passes through the guide hole 15 of the first protective cover 6 and is threadedly connected to the threaded hole 16 below, and the first limiting column 10 is slidably matched with the first protective cover 6, and one end of the second limiting column 11 with the external thread 14 passes through the guide hole 15 of the second protective cover 7 and is threadedly connected to the threaded hole 16 below, and the second limiting column 11 is slidably matched with the second protective cover 7.

[0027] In this solution, after the cylindrical structure 8 abuts against the upper surface of the workpiece, when the drill bit 3 is fed downward, the cylindrical structure 8 and the fixed disk 4 slide relative to each other, and at the same time, the first shield 6 and the first limiting column 10 slide relative to each other, and the second shield 7 and the second limiting column 11 slide relative to each other. The first limiting column 10 and the second limiting column 11 can prevent the first shield 6 and the second shield 7 from spreading, that is, the limiting member can maintain the shape of the cylindrical structure 8, so as to facilitate the cylindrical structure 8 to prevent waste chips from splashing. In addition, after removing the first limiting column 10 and the second limiting column 11, the first shield 6 and the second shield 7 can be removed from the fixed disk 4.

[0028] Example 3

[0029] The difference between this embodiment and embodiment 2 is that in this embodiment, reference Figure 1 , ropes 17 are connected to the limiting blocks 13 of the first limiting column 10 and the second limiting column 11, and hooks 18 are provided on the two ropes 17, and hanging rings 19 are provided on the first protective cover 6 and the second protective cover 7. After the cylindrical structure 8 rises, the two hooks 18 can be hooked with the corresponding hanging rings 19 respectively. When the drill bit 3 needs to be replaced, the first protective cover 6 and the second protective cover 7 are slid upward, and the hook 18 on the first limiting column 10 is connected with the hanging ring 19 on the first protective cover 6, and the hook 18 on the second limiting column 11 is connected with the hanging ring 19 on the second protective cover 7. The cylindrical structure 8 can be conveniently fixed above the drill bit 3, so that the chuck 2 is exposed from the opening below the cylindrical structure 8, which is convenient for disassembling and replacing the drill bit 3. The other structures of this embodiment are the same as those of embodiment 2, so they are not repeated.

[0030] Example 4

[0031] Based on Example 1, Figure 2 The limiting member includes a first connecting plate 20 and a second connecting plate 21 . The first connecting plate 20 is arranged on the first shield 6 , and the second connecting plate 21 is arranged on the second shield 7 . The first connecting plate 20 and the second connecting plate 21 are connected by bolts 22 .

[0032] In this solution, the first protective cover 6 and the second protective cover 7 are connected together by bolts 22, so that the first protective cover 6 and the second protective cover 7 form a cylindrical structure 8 with a more stable structure. The cylindrical structure 8 can also keep the drill bit 3 covered and protected during drilling, thereby preventing waste chips from splashing into the surrounding environment.

[0033] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A benchtop drilling machine, comprising a machine body, wherein the machine body comprises a spindle (1) and a chuck (2) arranged below the spindle (1), characterized in that: The invention also comprises a fixed disk (4), wherein a circular hole (5) is provided in the middle of the fixed disk (4) for the spindle (1) to pass through, and the spindle (1) is connected to the fixed disk (4) after passing through the circular hole (5) of the fixed disk (4); the chuck (2) is located below the fixed disk (4); a first protective cover (6) and a second protective cover (7) are provided on the fixed disk (4); the first protective cover (6) and the second protective cover (7) are combined and connected to form a cylindrical structure (8) with an opening at the bottom; the inner top wall of the cylindrical structure (8) is in contact with the upper surface of the fixed disk (4); a notch (9) is provided on the top wall of the cylindrical structure (8) for the spindle (1) to pass through; the inner side wall of the cylindrical structure (8) is slidably matched with the outer wall of the fixed disk (4) along the length direction of the spindle (1); and a limiting member is provided on the cylindrical structure (8), and the limiting member is used to limit the cylindrical structure (8) outside the fixed disk (4).

2. A benchtop drilling machine according to claim 1, characterized in that: The limiting member comprises a first limiting column (10) and a second limiting column (11), the first limiting column (10) and the second limiting column (11) both comprising a column (12), one end of the column (12) being provided with a limiting block (13), and the outer wall of the other end being provided with an external thread (14), the size of the limiting block (13) being larger than the outer diameter of the column (12); the top walls of the first protective cover (6) and the second protective cover (7) are both provided with guide holes (15), the upper surface of the fixing plate (4) and the two guide holes (15) are connected to each other. Corresponding positions are respectively provided with threaded holes (16); one end of the first limiting column (10) with an external thread (14) passes through the guide hole (15) of the first protective cover (6) and is threadedly connected to the threaded hole (16) below, and the first limiting column (10) and the first protective cover (6) are slidably matched; one end of the second limiting column (11) with an external thread (14) passes through the guide hole (15) of the second protective cover (7) and is threadedly connected to the threaded hole (16) below, and the second limiting column (11) and the second protective cover (7) are slidably matched.

3. A benchtop drilling machine according to claim 2, characterized in that: The limiting blocks (13) of the first limiting column (10) and the second limiting column (11) are both connected with ropes (17), and hooks (18) are both provided on the two ropes (17). The first protective cover (6) and the second protective cover (7) are both provided with hanging rings (19). After the cylindrical structure (8) rises, the two hooks (18) can be respectively hooked with the corresponding hanging rings (19).

4. A benchtop drilling machine according to claim 1, characterized in that: The limiting member comprises a first connecting plate (20) and a second connecting plate (21), wherein the first connecting plate (20) is arranged on the first shield (6), and the second connecting plate (21) is arranged on the second shield (7), and the first connecting plate (20) and the second connecting plate (21) are connected by bolts (22).

5. A benchtop drilling machine according to any one of claims 1 to 4, characterized in that: The first protective cover (6) and the second protective cover (7) are both made of transparent material.

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