A bench drilling machine for machining mechanical parts

Abstract

The present disclosure relates to the technical field of mechanical part processing, and one embodiment of the present disclosure provides a bench drill for mechanical part processing, which comprises a drill main body and a pair of clamping seats, the clamping seats are arranged on the drill main body, a drilling assembly is arranged on the drill main body, a clamping and positioning assembly is arranged between the drill main body and the clamping seats, and a cleaning assembly is arranged in the drill main body; the clamping and positioning assembly comprises a guide frame fixed to the surface of the drill main body, the clamping seats are horizontally and slidingly connected to the two ends of the guide frame, the clamping seats are provided with synchronous racks on one side, the surface of the drill main body is rotationally connected with a driving gear through a rotating shaft, and the driving gear is engaged with the pair of synchronous racks. Through the above technical scheme, the technical problem that the traditional bench drill in the prior art adopts a manual screw clamp to fix a workpiece, an operator needs to repeatedly rotate a bolt to adjust the clamping force and position, and the single fixing time is relatively long is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of machining of mechanical parts, and more specifically, to a bench drill for machining mechanical parts. Background Technology

[0002] In the field of mechanical parts processing, bench drills are commonly used for drilling and reaming small parts (such as flanges, gears, and brackets). Due to their compact size and ease of operation, they are widely used in small-batch production and maintenance scenarios. The drilling accuracy of parts directly affects the compatibility of subsequent assembly; for example, excessive hole diameter deviation may prevent bolts from being installed correctly. Therefore, high requirements are placed on the workpiece fixing stability and auxiliary functions of the drill. However, traditional bench drills for mechanical parts processing have two major drawbacks: firstly, they are inconvenient for quickly fixing workpieces; and secondly, they lack efficient waste removal capabilities, severely restricting processing efficiency and product quality. Traditional bench drill presses typically use manual spiral clamps to hold workpieces, requiring operators to repeatedly rotate the bolts to adjust the clamping force and position, resulting in lengthy setup times. For irregularly shaped or irregularly shaped parts, additional specialized clamps are needed, increasing preparation time and making clamp replacement cumbersome, which is difficult to adapt to the processing needs of various parts. If the clamping force is insufficient or the positioning is inaccurate, the workpiece is prone to displacement during drilling, leading to hole diameter deviation, rough hole walls, and a high defect rate; excessive clamping force may cause deformation of thin-walled parts, further reducing the pass rate. Therefore, the development of bench drills for machining mechanical parts, which can quickly fix workpieces and efficiently remove waste chips, has become an urgent need for the industry to improve quality and efficiency. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a bench drill for machining mechanical parts, which solves the technical problem that traditional bench drills in the prior art mostly use manual spiral clamps to fix workpieces, requiring operators to repeatedly rotate bolts to adjust the clamping force and position, resulting in a long time consumption for each fixing.

[0004] According to one aspect, at least one embodiment of this disclosure provides a bench drill for machining mechanical parts, comprising: The drilling machine body and a pair of clamping seats are both mounted on the drilling machine body; A drilling assembly, which is disposed on the body of the drilling machine; A clamping and positioning assembly is disposed between the drill press body and the clamping seat; A cleaning component is disposed in the drill press body; The clamping and positioning assembly includes a guide frame, which is fixed to the surface of the drill press body. The clamping seat is horizontally slidably connected to both ends of the guide frame. A synchronous rack is provided on one side of the clamping seat. A drive gear is rotatably connected to the surface of the drill press body via a rotating shaft. The drive gear meshes with a pair of synchronous racks.

[0005] As a further technical solution, a driven gear is provided at the lower end of the rotating shaft of the drive gear. The driven gear is located at the bottom of the drill body, and a telescopic cylinder is horizontally fixedly connected to the bottom of the drill body.

[0006] As a further technical solution, the output end of the telescopic cylinder is provided with a drive rack, which meshes with the driven gear, and the clamping seat is provided with a transmission cavity, in which an adjusting stud is provided.

[0007] As a further technical solution, a pair of round rods are provided in the transmission cavity, and an opening is provided on the inner side of the transmission cavity. A clamping plate is slidably connected to the round rods, and the clamping plate passes through the opening and slides against the side surface of the clamping seat. The clamping plate and the adjusting stud are connected by a threaded engagement.

[0008] According to another aspect, in at least one embodiment of the present invention, the cleaning component includes a collection cover, which is fixed to the top of the drill body. The surface of the drill body has a plurality of cleaning ports, which are connected to the interior of the collection cover. A pusher auger is provided inside the collection cover, and one side of the collection cover has an open structure.

[0009] According to another aspect, in at least one embodiment of the present invention, the drilling assembly includes a column, the column is fixed to the surface of the drilling machine body, the upper end of the column is vertically and movably connected to a base, the bottom of the base is provided with a tool sleeve that is driven to rotate by electricity, and the surface of the drilling machine body is vertically and rotatably connected by electricity with a vertical stud, the vertical stud and the base being connected by a threaded connection.

[0010] As a further technical solution, both sides of the collection cover are inclined towards the center, and the bottom of the collection cover has a semi-circular structure.

[0011] As a further technical solution, the surface of the clamping plate has a toothed structure.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the clamping and positioning assembly solves the problem of time-consuming traditional manual clamping through an automated synchronous clamping design. A telescopic cylinder drives the clamping seat to move synchronously along the guide frame, quickly adapting to the length of the component; the adjusting stud engages with the clamping plate, and the toothed surface enhances clamping stability, preventing component displacement. This structure eliminates the need for repeated bolt rotation, reducing clamping time, adapting to components of different sizes, and simultaneously ensuring workpiece stability during drilling with double clamping, reducing the risk of hole diameter deviation due to positioning errors, improving machining accuracy and yield, and meeting the needs of batch processing of various components. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Drilling machine body; 2. Clamping seat; 3. Clamping and positioning assembly; 3-1. Guide frame; 3-2. Synchronous rack; 3-3. Drive gear; 3-4. Driven gear; 3-5. Telescopic cylinder; 3-6. Drive rack; 3-7. Transmission chamber; 3-8. Adjusting stud; 3-9. Round rod; 3-10. Through port; 3-11. Clamping plate; 4. Cleaning assembly; 4-1. Collection cover; 4-2. Cleaning port; 4-3. Push auger; 5. Drilling assembly; 5-1. Column; 5-2. Machine base; 5-3. Tool holder; 5-4. Vertical stud. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0018] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figures 1-3 As shown, a bench drill for machining mechanical parts is illustrated in one embodiment of this disclosure, comprising: The drilling machine body 1 and a pair of clamping seats 2 are both disposed on the drilling machine body 1; Drilling assembly 5, which is disposed on the drilling machine body 1; Clamping and positioning assembly 3, wherein the clamping and positioning assembly 3 is disposed between the drill body 1 and the clamping seat 2; Cleaning component 4 is disposed in the drilling machine body 1; The clamping and positioning assembly 3 includes a guide frame 3-1, which is fixed to the surface of the drill body 1. A clamping seat 2 is horizontally slidably fitted onto both ends of the guide frame 3-1. A synchronous rack 3-2 is provided on one side of each clamping seat 2. A drive gear 3-3 is rotatably connected to the surface of the drill body 1 via a rotating shaft. The drive gear 3-3 meshes with a pair of synchronous racks 3-2. A driven gear 3-4 is provided at the lower end of the rotating shaft of the drive gear 3-3. The driven gear 3-4 is located at the bottom of the drill body 1. A telescopic cylinder 3- is horizontally fixedly connected to the bottom of the drill body 1. 5. The output end of the telescopic cylinder 3-5 is provided with a drive rack 3-6, which meshes with the driven gear 3-4. The clamping seat 2 has a transmission cavity 3-7, and an adjusting stud 3-8 is provided in the transmission cavity 3-7. A pair of round rods 3-9 are provided in the transmission cavity 3-7. A through-hole 3-10 is provided on the inner side of the transmission cavity 3-7. A clamping plate 3-11 is slidably connected to the round rod 3-9. The clamping plate 3-11 passes through the through-hole 3-10 and slides against the side surface of the clamping seat 2. The clamping plate 3-11 and the adjusting stud 3-8 are connected by a threaded engagement.

[0022] In some examples, in order to achieve rapid clamping and stable fixation of mechanical parts, adapt to the processing and positioning requirements of parts of different sizes, and ensure that the workpiece does not shift during drilling, a clamping and positioning component 3 is designed. The guide frame 3-1 on the surface of the drilling machine body 1 is horizontally fixed, providing a stable sliding reference for the clamping seat 2. A pair of clamping seats 2 are horizontally slidably mounted on both ends of the guide frame 3-1 through the bottom sliding sleeve, and can move closer or further away synchronously along the length of the guide frame 3-1 to ensure that the parts are always in the center area of ​​the drilling machine processing.

[0023] The synchronous racks 3-2 on one side of the clamping seat 2 are horizontally distributed and mesh with the drive gear 3-3 on the rotating shaft of the drill body 1 to form a symmetrical transmission structure. When the drive gear 3-3 rotates, it can drive the two synchronous racks 3-2 to move in opposite directions, thereby realizing the synchronous displacement of the two clamping seats 2.

[0024] The driven gear 3-4 at the lower end of the rotating shaft of the drive gear 3-3 extends to the bottom of the drill body 1 and meshes with the drive rack 3-6 at the output end of the telescopic cylinder 3-5, which is horizontally fixed at the bottom of the drill body 1. The telescopic cylinder 3-5 provides power for the adjustment of the clamping seat 2. When the telescopic cylinder 3-5 extends and retracts, the drive rack 3-6 drives the driven gear 3-4 to rotate, which in turn drives the drive gear 3-3 to rotate through the rotating shaft, thus realizing the automatic synchronous adjustment of the two clamping seats 2 without manual adjustment, thereby improving clamping efficiency.

[0025] The transmission cavity 3-7 inside the clamping seat 2 provides installation space for the clamping structure. The adjusting stud 3-8 inside the cavity is horizontally rotatably connected by a bearing. A pair of round rods 3-9 are distributed in parallel on both sides of the adjusting stud 3-8 and are fixed to the inner wall of the transmission cavity 3-7, providing sliding guidance for the clamping plate 3-11. The through-hole 3-10 inside the transmission cavity 3-7 is adapted to the clamping plate 3-11. The clamping plate 3-11 is slidably fitted onto the round rods 3-9 through the central sliding hole and is connected to the adjusting stud 3-8 through the threaded hole.

[0026] When the adjusting stud 3-8 is rotated, the clamping plate 3-11 will move along the round rod 3-9, pass through the through-hole 3-10 and fit against the surface of the component, clamping the component longitudinally.

[0027] During operation, the telescopic cylinder 3-5 drives the clamping seat 2 to move synchronously to the position that matches the length of the part, and the adjusting stud 3-8 is rotated to clamp the part with the clamping plate 3-11. The horizontal synchronous adjustment ensures that the part is centered, and the vertical clamping plate 3-11 prevents the workpiece from shaking. The double constraint ensures the stability of the part position during processing and adapts to the positioning requirements of parts with different length and width dimensions.

[0028] like Figures 1-3 As shown in the figure, the cleaning component 4 in this embodiment includes a collection cover 4-1, which is fixed to the top of the drill body 1. The surface of the drill body 1 is provided with a plurality of cleaning ports 4-2, which are connected to the inside of the collection cover 4-1. A pusher auger 4-3 is provided inside the collection cover 4-1, and one side of the collection cover 4-1 is an open structure.

[0029] In some examples, in order to achieve efficient collection and centralized cleaning of drilling debris, avoid debris scattering and affecting the processing environment and equipment operation, and reduce the intensity of manual cleaning, a cleaning component 4 is designed. The collection cover 4-1 at the top of the drill body 1 is in the shape of an inverted funnel and is fixed directly above the drilling area by bolts. Its coverage area corresponds to the drilling operation area and can collect the debris generated by drilling from all directions. Several cleaning ports 4-2 on the surface of the drill body 1 are evenly distributed around the drilling area and are connected to the inside of the collection cover 4-1. The debris generated during drilling (including small flying debris) can fall directly into the collection cover 4-1 through the cleaning ports 4-2, preventing the debris from scattering on the surface of the drill body or the ground.

[0030] The pusher auger 4-3 inside the collection hood 4-1 is horizontally rotatably connected by a bearing. One end of the auger is fixedly connected to the output end of an electric drive unit (such as a geared motor), allowing it to rotate stably inside the collection hood 4-1. The opening structure on one side of the collection hood 4-1 corresponds to the end of the pusher auger 4-3. The opening can connect to an external collection box or waste bag to achieve directional discharge of waste.

[0031] During operation, the drilling debris, under the influence of gravity and airflow, enters the collection hood 4-1 through the cleaning port 4-2. An electric drive unit rotates the auger 4-3, whose blades transport the accumulated debris within the collection hood 4-1 towards the opening, preventing blockage. The debris is then discharged directly into the collection device for centralized cleaning. The arc-shaped or funnel-shaped structure of the collection hood 4-1 guides the debris towards the auger, the distribution of the cleaning ports 4-2 ensures thorough collection, and the active conveying by the auger 4-3 prevents debris accumulation. These components work together to treat the debris, maintaining a clean processing environment and minimizing interference with drilling accuracy.

[0032] like Figures 1-3 As shown in the figure, the drilling assembly 5 in this embodiment includes a column 5-1, which is fixed to the surface of the drilling machine body 1. The upper end of the column 5-1 is vertically and movably connected to a base 5-2. The bottom of the base 5-2 is provided with a tool sleeve 5-3 that is driven to rotate by electricity. The surface of the drilling machine body 1 is vertically and rotatably connected to a vertical stud 5-4 driven by electricity. The vertical stud 5-4 is connected to the base 5-2 by a threaded connection.

[0033] In some examples, in order to achieve stable rotation of the drill bit and precise control of drilling depth, and to ensure the accuracy and efficiency of drilling of mechanical parts, a drilling assembly 5 is designed. This assembly includes a column 5-1 vertically fixed on the surface of the drill body 1. Its outer wall is adapted to the sliding hole of the machine base 5-2. The machine base 5-2 is vertically and movably mounted on the column 5-1 through the sliding hole. The column 5-1 provides vertical guidance for the machine base 5-2, preventing lateral deviation or tilting when the machine base 5-2 is raised or lowered, and ensuring that the drill bit always moves in the vertical direction.

[0034] The bottom of the base 5-2 at the upper end of the column 5-1 is fixed with a tool sleeve 5-3 by bolts. The tool sleeve 5-3 is equipped with a clamping structure (such as an elastic chuck) inside, which can quickly clamp the drill bit. The tool sleeve 5-3 is driven to rotate by a built-in motor to provide drilling power for the drill bit. The motor output speed is stable to ensure that there is no shaking during the cutting process of the drill bit. The vertical stud 5-4 on the surface of the drill body 1 is vertically rotatably connected by a bearing. Its axis is parallel to the column 5-1. The upper end of the vertical stud 5-4 is fixedly connected to the output end of the electric drive component (such as a servo motor) to achieve precise speed control.

[0035] The vertical stud 5-4 passes through the threaded hole of the machine base 5-2 through the threaded engagement to form a drive structure. When the force drive component drives the vertical stud 5-4 to rotate forward and backward, the machine base 5-2 can be driven to rise and fall vertically along the column 5-1 through the thread engagement, thereby controlling the feed and retraction of the drill bit and precisely adjusting the drilling depth.

[0036] During operation, the drill bit is clamped in the tool holder 5-3, and the tool holder 5-3 is electrically driven to rotate the drill bit. Simultaneously, the vertical stud 5-4 rotates under electric drive, causing the machine base 5-2 to slowly descend along the column 5-1. The drill bit contacts the workpiece to complete the drilling. After drilling to the preset depth, the vertical stud 5-4 rotates in the opposite direction, and the machine base 5-2 causes the drill bit to rise and reset. The guiding function of the column 5-1 ensures the perpendicularity of the drilling, the precise transmission of the vertical stud 5-4 controls the drilling depth, and the stable rotation of the tool holder 5-3 ensures cutting quality. These components work together to achieve stable and high-precision drilling of the workpiece, adapting to the processing needs of workpieces of different thicknesses.

[0037] For example, such as Figure 3 As shown, both sides of the collection cover 4-1 are inclined towards the center, and the bottom of the collection cover 4-1 has a semi-circular structure.

[0038] In some examples, both sides of the collection hood 4-1 are inclined towards the center. With the guidance of the inclined surface, the waste generated by drilling can be quickly gathered to the center of the collection hood 4-1, avoiding the accumulation of waste on both sides inside the hood. The bottom of the collection hood 4-1 has a semi-circular structure, which can fit more closely with the arc-shaped outer wall of the internal pushing auger 4-3, reducing the gap between the auger and the hood wall, preventing small waste from getting stuck in the gap and causing blockage, ensuring that the auger can smoothly transport waste and ensuring the stable operation of the waste treatment closed loop.

[0039] For example, such as Figure 1 As shown, the surface of the clamp 3-11 has a toothed structure.

[0040] In some examples, the toothed structure on the surface of clamp 3-11 can significantly enhance the friction and engagement between clamp 3-11 and the surface of the component. When clamp 3-11 clamps the component, the protruding part of the toothed structure can embed into the surface of the component (especially suitable for materials such as metal and plastic), forming an anti-slip effect and preventing the component from slipping or shifting due to vibration or force during drilling.

[0041] By filling the surface gaps through the misalignment and fit of the teeth, the clamping force is applied more evenly to the parts, which not only improves clamping stability but also reduces surface damage to the parts caused by excessive local pressure, ensuring machining accuracy and the integrity of the parts' appearance.

[0042] In actual use: Place the mechanical parts on the surface of the drilling machine body 1, activate the telescopic cylinder 3-5 of the clamping and positioning assembly 3, drive the rack 3-6 to rotate the driven gear 3-4, thereby causing the drive gear 3-3 to mesh with the synchronous rack 3-2, driving a pair of clamping seats 2 to synchronously approach the parts along the guide frame 3-1. According to the width of the parts, rotate the adjusting stud 3-8 in the clamping seat 2, the clamping plate 3-11 slides along the round rod 3-9 and passes through the through-hole 3-10, the toothed surface fits against the parts to complete the fixation. Activate the drilling assembly 5, the electric drive vertical stud 5-4 rotates, the machine base 5-2 descends along the column 5-1, the tool holder 5-3 drives the drill bit to rotate to drill the parts. The waste chips generated during drilling fall into the collection hood 4-1 through the cleaning port 4-2, the pusher auger 4-3 rotates to transport the waste chips towards the opening, and collect them to the collection device. After drilling is completed, the vertical stud 5-4 rotates in the opposite direction to raise the machine base 5-2. The telescopic cylinder 3-5 drives the clamping seat 2 to reset, and the parts can be taken out after releasing them. The whole process realizes rapid clamping, precise drilling and simultaneous cleaning of waste chips.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A bench drill for machining mechanical parts, characterized in that, include: The drilling machine body (1) and a pair of clamping seats (2) are both disposed on the drilling machine body (1); Drilling assembly (5), which is disposed on the drill body (1); A clamping and positioning assembly (3) is disposed between the drill body (1) and the clamping seat (2); Cleaning component (4), the cleaning component (4) is disposed in the drill body (1); The clamping and positioning assembly (3) includes a guide frame (3-1), which is fixed on the surface of the drill body (1). The clamping seat (2) is horizontally slidably connected to both ends of the guide frame (3-1). A synchronous rack (3-2) is provided on one side of the clamping seat (2). A drive gear (3-3) is rotatably connected to the surface of the drill body (1) via a rotating shaft. The drive gear (3-3) meshes with a pair of synchronous racks (3-2).

2. The bench drill for machining mechanical parts according to claim 1, characterized in that, The driven gear (3-4) is provided at the lower end of the rotating shaft of the drive gear (3-3). The driven gear (3-4) is located at the bottom of the drill body (1). A telescopic cylinder (3-5) is horizontally fixedly connected to the bottom of the drill body (1).

3. A bench drill for machining mechanical parts according to claim 2, characterized in that, The output end of the telescopic cylinder (3-5) is provided with a drive rack (3-6), which meshes with the driven gear (3-4). The clamping seat (2) is provided with a transmission cavity (3-7), and an adjusting stud (3-8) is provided in the transmission cavity (3-7).

4. A bench drill for machining mechanical parts according to claim 3, characterized in that, A pair of round rods (3-9) are provided in the transmission cavity (3-7). A through-hole (3-10) is opened on the inner side of the transmission cavity (3-7). A clamping plate (3-11) is slidably connected to the round rod (3-9). The clamping plate (3-11) passes through the through-hole (3-10) and slides against the side surface of the clamping seat (2). The clamping plate (3-11) is connected to the adjusting stud (3-8) by a threaded engagement.

5. A bench drill for machining mechanical parts according to claim 1, characterized in that, The cleaning component (4) includes a collection cover (4-1), which is fixed to the top of the drill body (1). The surface of the drill body (1) has several cleaning ports (4-2), which are connected to the inside of the collection cover (4-1). A pusher auger (4-3) is provided inside the collection cover (4-1), and one side of the collection cover (4-1) is an open structure.

6. A bench drill for machining mechanical parts according to claim 1, characterized in that, The drilling assembly (5) includes a column (5-1) fixed to the surface of the drilling machine body (1). The upper end of the column (5-1) is vertically and movably connected to a base (5-2). The bottom of the base (5-2) is provided with a tool sleeve (5-3) that is driven to rotate by electricity. The surface of the drilling machine body (1) is vertically and rotatably connected to a vertical stud (5-4) driven by electricity. The vertical stud (5-4) is connected to the base (5-2) by a threaded connection.

7. A bench drill for machining mechanical parts according to claim 5, characterized in that, The collection cover (4-1) is inclined towards the center on both sides, and the bottom of the collection cover (4-1) is a semi-circular structure.

8. A bench drill for machining mechanical parts according to claim 4, characterized in that, The surface of the clamp (3-11) has a toothed structure.

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