Inclined hole drilling device for metal workpiece
By designing a device for drilling inclined holes in metal workpieces, using inclined plates and bolts to fix the workpiece at a specific inclination angle, and combining chip removal grooves and air supply channels, the problem of conventional CNC machining centers being unable to efficiently process inclined holes is solved, achieving the effect of batch rapid processing and high-precision inclined holes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI HENGXIN METAL PROD MFG CO LTD
- Filing Date
- 2026-03-10
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, conventional CNC machining centers are difficult to efficiently process inclined holes in metal workpieces in batches, and five-axis CNC machine tools have low production efficiency when mass-producing.
Design a device for drilling inclined holes in metal workpieces, including a base and an inclined plate. The workpiece is fixed to the inclined plate by bolts and positioning pins to form a specific inclination angle. Combined with chip removal grooves and air supply channels, it can achieve efficient machining of inclined holes.
It enables conventional machining centers to rapidly process inclined holes in batches of workpieces, improving production efficiency and ensuring the machining accuracy and stability of inclined holes, while reducing problems such as bolt loosening and chip removal.
Smart Images
Figure CN122077048A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metal processing, and in particular to a device for drilling oblique holes in metal workpieces. Background Technology
[0002] In machining, it is often necessary to drill inclined holes on the surface of metal workpieces. To ensure the positional and angular accuracy of the inclined holes, CNC machining centers are often chosen for drilling. Although high-end equipment such as five-axis CNC machine tools can directly machine inclined hole structures, the production efficiency is not high when large-volume processing is required. Conventional CNC machining centers can usually only handle vertical drilling operations, making it difficult to perform inclined hole drilling. Summary of the Invention
[0003] To improve the machining efficiency of oblique holes in batch workpieces of machining centers, this application provides a device for drilling oblique holes in metal workpieces.
[0004] The technical solution of the device for drilling oblique holes in metal workpieces provided in this application is as follows: A device for drilling angled holes in metal workpieces includes a base and an inclined plate. The base is used to install on the worktable of a machining center, and the inclined plate is installed on the base. The inclined plate is provided with locating pins and bolts, and the bolts and locating pins are used to connect the workpiece. The surface of the inclined plate is provided with an installation area for installing the workpiece. The locating pins and bolts are distributed at the edge of the installation area. Two locating pins are symmetrically arranged along the center of the installation area, and the line connecting the two locating pins forms a certain angle with the inclination direction of the inclined plate.
[0005] By adopting the above technical solution, when machining inclined holes using the metal workpiece drilling device, the workpiece is fixed to the inclined plate using bolts and pins. Because the base and the inclined plate form a fixed tilt angle, when the metal workpiece drilling device is installed on the worktable of the machining center, the workpiece and the worktable form a specific tilt angle, allowing the machining center's cutting tools to machine inclined holes on the workpiece. This metal workpiece drilling device enables conventional machining centers to achieve rapid batch machining of inclined holes on workpieces, resulting in higher production efficiency.
[0006] The line connecting the two pins of the workpiece forms a certain angle with the inclination direction of the inclined plate, allowing the workpiece to be positioned over a large span on the inclined plate, whether along the inclination direction or in a horizontal direction perpendicular to the inclination direction, ensuring the stability of the workpiece during processing. Furthermore, during the drilling process, the inclined plate vibrates; with the pins in place, the pins can bear the vibration load generated by the tool during workpiece machining, reducing bolt loosening and helping to ensure the machining accuracy of the inclined hole.
[0007] Optionally, the upper surface of the inclined plate is provided with a plurality of chip removal grooves, the two ends of the chip removal grooves are connected through each other, and the extending direction of the chip removal grooves is inclined relative to the bottom surface of the base.
[0008] By adopting the above technical solution, the chip removal groove on the upper surface of the inclined plate is recessed, allowing the chip removal groove to avoid the cutting tool penetrating the workpiece, thus enabling the cutting tool to machine the through-hole. When the cutting tool penetrates the inclined hole, some chips fall into the chip removal groove, and because the extension direction of the chip removal groove is inclined with the bottom surface of the base, the chips can be automatically discharged from the chip removal groove.
[0009] Optionally, the inclined plate is provided with an air supply channel, which includes a connecting channel and a deep channel. The length direction of the connecting channel is parallel to the main surface of the inclined plate. The connecting channel is used to introduce airflow. One end of the deep channel is connected to the connecting channel, and the other end passes through the chip removal groove. The diameter of the deep channel gradually increases in the direction away from the chip removal groove.
[0010] By adopting the above technical solution, when using the slanted hole drilling device for metal workpieces, the slanted plate can introduce compressed air through the air supply channel. The compressed air enters the chip removal groove from the connecting channel and the deep channel, which can blow the chips in the chip removal groove out of the chip removal groove. Moreover, the airflow introduced by the air supply channel can cool the heated workpiece, thereby indirectly cooling the cutting tool. Because the diameter of the hole near the chip removal groove end of the deep channel is smaller, it is not easy for chips to enter the deep channel. Furthermore, the hole wall of the deep channel has a guiding effect on the airflow, allowing the airflow to easily reverse and blow the chips that have entered the deep channel out of the deep channel.
[0011] Optionally, the lower surface of the inclined plate is provided with a sealing bottom plate, and the inclined plate has a recessed groove adapted to the sealing bottom plate. The depth of the recessed groove is greater than the thickness of the sealing bottom plate, and the sealing bottom plate is installed on the inclined plate by fasteners; the end of the deep channel away from the chip removal groove is connected to the recessed groove.
[0012] By adopting the above technical solution, the large end of the deep channel is set through, which allows the deep channel to be formed by machining, making the inclined plate easier to manufacture.
[0013] Optionally, the connecting channel includes a connecting hole and a grooved channel, the connecting hole being formed in the inclined plate, and the grooved channel being formed in the sealing bottom plate on the side close to the inclined plate; the deep channel is connected to the grooved channel, and the connecting hole is connected to one of the deep channels.
[0014] By adopting the above technical solution, the connecting hole is mainly used to connect the grooved channel of the deep channel, which is set as a grooved structure and is relatively easy to process.
[0015] Optionally, the lower side of the inclined plate is hinged to the base. The inclined plate is slidably provided with two sets of movable hinges. The two sets of movable hinges are staggered along the hinge center line between the lower side of the inclined plate and the base. The sliding direction of the movable hinge on the inclined plate is consistent with the tilt direction of the inclined plate. The movable hinge has a first hinge body and a second hinge body that are hinged to each other. The first hinge body is slidably connected to the inclined plate, and the second hinge body is detachably connected to the base.
[0016] By adopting the above technical solution, the second hinge body of the movable hinge is detachably connected to the base. After the movable hinge is detached and moved a certain distance along the inclined direction of the inclined plate, the second hinge body of the movable hinge is re-fixed, which can change the angle of the inclined plate and enable the inclined plate to adapt to the processing of inclined holes at different angles.
[0017] Optionally, each set of movable hinges is provided with multiple hinges, and they are spaced apart along the inclination direction of the inclined plate.
[0018] By adopting the above technical solution, the number of each set of movable hinges is set to multiple, which can increase the stability of the connection between the inclined plate and the base.
[0019] Optionally, the base is provided with two columns of reference scale lines, the positions of the two columns of reference scale lines correspond to the two sets of movable hinges respectively, and the unit scale lines of the two columns of reference scale lines are different; in each set of movable hinges, at least one of the second hinge bodies of the movable hinges is provided with an alignment scale line, the alignment scale line is used to align with the reference scale line to indicate the tilt angle of the inclined plate.
[0020] By adopting the above technical solution, when adjusting the inclination of the inclined plate by moving the hinge, it is more convenient to determine the angle of the inclined plate by using the alignment lines of the second hinge body and the reference scale lines. Moreover, since the unit scale lines of the two reference scale lines are different, the angle adjustment accuracy of the inclined plate can be improved.
[0021] Optionally, the second hinge body with the alignment lines is further provided with a vernier scale line, and the base is provided with an auxiliary reference scale line. The auxiliary reference scale line and the vernier scale line are equidistant scale lines. The scale unit of the vernier scale line is smaller than the scale unit of the auxiliary reference scale line, and the difference between the scale unit of the vernier scale line and the auxiliary reference scale line is between 0.02 and 0.05 mm.
[0022] By adopting the above technical solution, the vernier scale line and the auxiliary reference scale line can be used to assist in aligning the position of the second hinge body, reducing visual errors when aligning with the reference scale line using the alignment line.
[0023] Optionally, the inclined plate and the base are provided with rubber shock absorbers. The rubber shock absorbers have a bottom surface and an inclined surface. The bottom surface of the rubber shock absorber abuts against the base, and the inclined surface of the rubber shock absorber abuts against the back of the inclined plate. The rubber shock absorbers are in a pre-compression deformation state. The rubber shock absorbers have different size specifications.
[0024] By adopting the above technical solution, rubber damping blocks are installed between the inclined plate and the base, which can buffer the vibration caused by workpiece cutting, thereby helping to protect the slide rail assembly and the cutting tool.
[0025] In summary, this application includes at least one of the following beneficial technical effects: The workpiece is fixed to the inclined plate using bolts and pins. When the metal workpiece drilling device is installed on the worktable of the machining center, the workpiece and the worktable form a specific tilt angle, allowing the cutting tool of the machining center to machine the inclined hole on the workpiece. The metal workpiece drilling device enables conventional machining centers to perform batch and rapid machining of inclined holes on workpieces, achieving higher production efficiency. The chip removal groove on the upper surface of the inclined plate is recessed, allowing it to avoid the cutting tool penetrating the workpiece, thus enabling the tool to machine through-holes. When the tool penetrates the inclined hole, some chips fall into the chip removal groove. Because the extension direction of the chip removal groove is inclined to the bottom surface of the base, the chips can be automatically discharged from the chip removal groove. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the metal workpiece drilling oblique hole device of Example 1.
[0027] Figure 2 This is a cross-sectional view of the metal workpiece drilling device of Example 1.
[0028] Figure 3 This is a schematic diagram of the metal workpiece drilling oblique hole device of Example 2.
[0029] Figure 4 This is a side view of the metal workpiece drilling device of Embodiment 2.
[0030] Figure 5 The base in Example 2 is Figure 4 The sectional view shown in AA.
[0031] Figure 6 This is a top view of the base in Embodiment 2.
[0032] Explanation of reference numerals in the attached figures: 1. Base; 11. Pressure strip; 111. Spacer protrusion; 12. Screw insertion gap; 13. Locking screw; 14. Spring washer; 15. Stepped notch; 16. Reference scale line; 17. Alignment scale line; 18. Auxiliary reference scale line; 19. Vernier scale line; 2. Inclined plate; 21. Chip removal groove; 22. Air supply channel; 221. Connecting channel; 2211. Connecting hole; 2212. Groove channel; 222. Deep channel; 23. Sealing bottom plate; 24. Countersunk groove; 25. Countersunk groove; 3. Positioning pin; 4. Bolt; 5. Wedge-shaped pad; 6. Moving hinge; 61. First hinge body; 62. Second hinge body; 63. Screw and nut assembly; 631. Screw; 632. Square nut; 633. Positioning sleeve; 7. Slide rail assembly; 9. Rubber shock absorber block. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail. Example 1
[0034] This application discloses a device for drilling oblique holes in metal workpieces. (Refer to...) Figure 1 The device for drilling inclined holes in metal workpieces includes a base 1 and an inclined plate 2. The base 1 is used to install on the worktable of a machining center. The inclined plate 2 is installed on the base 1 and is equipped with locating pins 3 and bolts 4. The bolts 4 and locating pins 3 are used to connect the workpiece. The surface of the inclined plate 2 has an installation area for installing the workpiece. The locating pins 3 and bolts 4 are distributed at the edge of the installation area. The two locating pins 3 are symmetrically arranged along the center of the installation area. The line connecting the two locating pins 3 forms an angle with the inclination direction of the inclined plate 2, with the angle ranging from 45° to 90°. The locating pin 3 can be either a cylindrical pin or an open elastic pin. When the positional accuracy deviation between the workpiece and the hole that mates with the locating pin 3 is large, the open elastic pin can adapt by elastic deformation.
[0035] When machining inclined holes using a metal workpiece drilling device, the workpiece is fixed to the inclined plate 2 using bolts 4 and pins. The workpiece can form a specific tilt angle with the worktable, so that the cutting tool of the machining center can machine the inclined hole on the workpiece.
[0036] Reference Figure 1 Two wedge-shaped pads 5 are provided between the inclined plate 2 and the base 1. The two wedge-shaped pads 5 are located on the inclined side of the inclined plate 2, and the wedge-shaped pads 5 are connected to the inclined plate 2 and the base 1 respectively by screws. Both the inclined plate 2 and the base 1 are provided with countersunk grooves 25 for accommodating the heads of screws. One side of the countersunk groove 25 extends through the edge surface of the inclined plate 2 or the side surface of the base 1.
[0037] Reference Figure 1The upper surface of the inclined plate 2 is provided with multiple mutually perpendicular chip removal grooves 21. The two ends of the chip removal grooves 21 are connected, and the extension direction of the chip removal grooves 21 is inclined relative to the bottom surface of the base 1. The chip removal grooves 21 can avoid the machining tool of the inclined hole, so as to facilitate the machining of the through inclined hole. When the tool passes through the inclined hole, the chips falling into the chip removal grooves 21 can be automatically discharged.
[0038] Reference Figure 1 and Figure 2 The inclined plate 2 is provided with an air supply channel 22, which includes a connecting channel 221 and a deep channel 222. The length direction of the connecting channel 221 is parallel to the main surface of the inclined plate 2. The connecting channel 221 is used to introduce airflow. One end of the deep channel 222 is connected to the connecting channel 221, and the other end passes through the chip removal groove 21. The diameter of the deep channel 222 gradually increases in the direction away from the chip removal groove 21.
[0039] The lower surface of the inclined plate 2 is provided with a sealing bottom plate 23. The inclined plate 2 has a recess 24 adapted to the sealing bottom plate 23. The depth of the recess 24 is greater than the thickness of the sealing bottom plate 23. The sealing bottom plate 23 is installed on the inclined plate 2 by fasteners. The end of the deep channel 222 away from the chip removal groove 21 is connected to the recess 24.
[0040] The connecting channel 221 includes a connecting hole 2211 and a grooved channel 2212. Multiple grooved channels 2212 are provided, and each corresponds to a chip removal groove 21. The connecting hole 2211 is opened on the side of the inclined plate 2 and has an internal thread for connecting a quick connector for compressed air. The grooved channel 2212 is opened on the side of the sealing bottom plate 23 near the inclined plate 2. The deep channel 222 communicates with the grooved channel 2212, and the connecting hole 2211 communicates with one of the deep channels 222.
[0041] When using the slanted hole drilling device for metal workpieces, compressed air can be introduced through the air supply channel 22. The compressed air enters the chip removal groove 21 from the connecting channel 221 and the deep channel 222, which can blow the chips out of the chip removal groove 21. Moreover, the airflow introduced by the air supply channel 22 can cool the heated workpiece, thereby indirectly cooling the cutting tool. Because the diameter of the hole near the chip removal groove 21 is smaller, chips are less likely to enter the deep channel 222.
[0042] The implementation principle of the metal workpiece drilling oblique hole device in this embodiment is as follows: The workpiece is mounted onto the drilling device, allowing it to form a specific tilt angle with the worktable, enabling the machining center's cutting tool to machine oblique holes on the workpiece. This metal workpiece drilling oblique hole device allows conventional machining centers to achieve rapid batch machining of oblique holes on workpieces, resulting in higher production efficiency.
[0043] The line connecting the two pins of the workpiece forms a certain angle with the inclination direction of the inclined plate 2, allowing the workpiece to be positioned over a large span on the inclined plate 2, whether along the inclination direction of the inclined plate 2 or in a horizontal direction perpendicular to the inclination direction of the inclined plate 2, thus ensuring the stability of the workpiece during processing. Furthermore, during the drilling process, the inclined plate 2 vibrates. With the pins in place, the pins can bear the vibration load generated during the workpiece machining process, reducing the loosening of the bolts 4 and helping to ensure the machining accuracy of the inclined hole.
[0044] The metal workpiece drilling device in this application embodiment is particularly suitable for metal workpieces with four bolt holes. For workpieces with four bolt holes, the size and installation position of the pin can be set according to the size and position of the four bolt holes on the metal workpiece. Example 2
[0045] The difference between this embodiment and embodiment 1 is that in this embodiment, the inclined plate 2 is configured with an adjustable tilt angle.
[0046] Reference Figure 3 and Figure 4 In this embodiment, the lower side of the inclined plate 2 is hinged to the base 1. The rotation axis of the hinge between the inclined plate 2 and the base 1 adopts an interference fit to minimize the influence of the fit clearance. The inclined plate 2 is slidably provided with two sets of movable hinges 6, and the rotation axis of the movable hinges 6 also adopts an interference fit. The two sets of movable hinges 6 are staggered along the hinge center line between the lower side of the inclined plate 2 and the base 1. Each set of movable hinges 6 is connected to the inclined plate 2 through a slide rail assembly 7. The slide rail assembly 7 is fixedly installed on the edge surfaces on both sides of the inclined plate 2. Each set of movable hinges 6 has two hinges, which are spaced apart along the inclination direction of the inclined plate 2.
[0047] The sliding direction of the movable hinge 6 on the inclined plate 2 is consistent with the tilting direction of the inclined plate 2. The movable hinge 6 has a first hinge body 61 and a second hinge body 62 that are hinged to each other. The first hinge body 61 is slidably connected to the inclined plate 2, and the second hinge body 62 is detachably connected to the base 1 through two screw and nut assemblies 63. In this embodiment, the first hinge body 61 is a hinge arm structure, and the second hinge body 62 is a combination of a hinge arm and a block.
[0048] Reference Figure 3 , Figure 4 and Figure 5The base 1 has pressure strips 11 on both sides, and the two ends of the pressure strips 11 are respectively spaced protrusions 111. The two spaced protrusions 111 abut against the side of the base 1, so that the pressure strips 11 and the spaced protrusions 111 form a through screw gap 12. The two ends of the pressure strips 11 are respectively provided with locking screws 13. The locking screws 13 pass through the pressure strips 11 and the spaced protrusions 111 at the ends of the pressure strips 11 and are threaded to the base 1. A spring pad 14 is provided between the spaced protrusions 111 and the side of the base 1. The spaced protrusions 111 are provided with receiving grooves for accommodating the spring pad 14. The depth of the receiving groove is less than the thickness of the spring pad 14 in the relaxed state.
[0049] The screw and nut assembly 63 includes a screw 631, a square nut 632, and a positioning sleeve 633. The positioning sleeve 633 has a rectangular cross-section and is fitted onto the screw 631. The positioning sleeve 633 is located between the square nut 632 and the head of the screw 631, and is positioned within the screw penetration gap 12. The screw 631 passes through the second hinge body 62 and the positioning sleeve 633 within the screw penetration gap 12 before connecting to the square nut 632. The lower surface of the pressure strip 11 and the lower surface of the base 1 are both provided with stepped notches 15 for accommodating the square nut 632. The inner surface of the square nut 632 abuts against the inner surfaces of the two stepped notches 15 respectively. When the pressure strip 11 is locked with the locking screw 13, the positioning sleeve 633 is in a state of compression deformation, which stabilizes the position of the positioning sleeve 633, thereby making the position of the screw and nut assembly 63 more stable.
[0050] Reference Figure 6 The base 1 has two columns of reference scale lines 16. The interval between each two adjacent scale lines of the reference scale lines 16 corresponds to a fixed angle change unit of the inclined plate 2. The positions of the two columns of reference scale lines 16 correspond to two sets of movable hinges 6 respectively. The unit scale lines of the two columns of reference scale lines 16 are different, which means they correspond to different angle change units of the inclined plate 2. In each set of movable hinges 6, there is a second hinge body 62 of the movable hinge 6 with an alignment scale line 17. The alignment scale line 17 is used to align with the reference scale lines 16 to indicate the tilt angle of the inclined plate 2.
[0051] In this manual, for the sake of simplicity in the accompanying drawings, the reference scale line 16 does not display the corresponding angle numbers. In practical applications, the reference scale line 16 needs to be marked with angle numbers at intervals for easy reading.
[0052] The second hinge body 62, which has alignment lines 17, also has vernier scale lines 19. The base 1 has auxiliary reference scale lines 18. In this embodiment, the auxiliary reference scale lines 18 are disposed on the pressure strip 11, which is a component of the base 1. The auxiliary reference scale lines 18 and the vernier scale lines 19 are equidistant lines. The scale unit of the vernier scale line 19 is smaller than that of the auxiliary reference scale line 18. The difference between the scale unit of the vernier scale line 19 and the auxiliary reference scale line 18 is between 0.02 and 0.05 mm.
[0053] The vernier scale line 19 has 10 graduations. The auxiliary reference scale line 18 is grouped into sets of 10 graduations. The difference between a unit on the vernier scale line 19 and a unit on the auxiliary reference scale line 18 is 0.1 times the number of units on the auxiliary reference scale line 18. The implementation principle of this embodiment is as follows: the second hinge body 62 of the movable hinge 6 is detachably connected to the base 1. After the movable hinge 6 is detached and moved a certain distance along the inclined direction of the inclined plate 2, the second hinge body 62 of the movable hinge 6 is re-fixed, which can change the angle of the inclined plate 2, allowing the inclined plate 2 to adapt to the processing of inclined holes at different angles. When adjusting the inclination of the inclined plate 2 by moving the movable hinge 6, it is more convenient to judge the angle of the inclined plate 2 by using the alignment mark 17 and the reference mark 16 of the second hinge body 62. In addition, the vernier mark 19 and the auxiliary reference mark 18 can assist in aligning the position of the second hinge body 62, reducing visual errors when aligning with the alignment mark 17 and the reference mark 16.
[0054] It is worth mentioning that, in order to facilitate fine adjustment of the inclined plate 2, a screw structure can be set on the base 1 to push or pull the inclined plate 2.
[0055] Reference Figure 4 The inclined plate 2 and the base 1 are provided with rubber shock absorbers 9. The rubber shock absorber 9 has a bottom surface and an inclined surface. The bottom surface of the rubber shock absorber 9 abuts against the base 1, and the inclined surface of the rubber shock absorber 9 abuts against the back of the inclined plate 2. The rubber shock absorber 9 is in a pre-compression deformation state. The rubber shock absorber 9 has different size specifications to adapt to different tilt angle ranges of the inclined plate 2.
[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A device for drilling oblique holes in metal workpieces, characterized in that: The device includes a base (1) and an inclined plate (2). The base (1) is used to install on the worktable of the machining center. The inclined plate (2) is installed on the base (1). The inclined plate (2) is provided with a positioning pin (3) and a bolt (4). The bolt (4) and the positioning pin (3) are used to connect the workpiece. The surface of the inclined plate (2) is provided with an installation area for installing the workpiece. The positioning pin (3) and the bolt (4) are distributed at the edge of the installation area. The two positioning pins (3) are symmetrically arranged along the center of the installation area. The line connecting the two positioning pins (3) forms a certain angle with the inclination direction of the inclined plate (2).
2. The device for drilling oblique holes in metal workpieces according to claim 1, characterized in that: The upper surface of the inclined plate (2) is provided with a plurality of chip removal grooves (21), the two ends of the chip removal grooves (21) are connected, and the extension direction of the chip removal grooves (21) is inclined relative to the bottom surface of the base (1).
3. The device for drilling oblique holes in metal workpieces according to claim 2, characterized in that: The inclined plate (2) is provided with an air supply channel (22), which includes a connecting channel (221) and a deep channel (222). The length direction of the connecting channel (221) is parallel to the main surface of the inclined plate (2). The connecting channel (221) is used to introduce airflow. One end of the deep channel (222) is connected to the connecting channel (221), and the other end passes through the chip removal groove (21). The diameter of the deep channel (222) gradually increases in the direction away from the chip removal groove (21).
4. The device for drilling oblique holes in metal workpieces according to claim 3, characterized in that: The lower surface of the inclined plate (2) is provided with a sealing bottom plate (23). The inclined plate (2) has a recess (24) adapted to the sealing bottom plate (23). The depth of the recess (24) is greater than the thickness of the sealing bottom plate (23). The sealing bottom plate (23) is installed on the inclined plate (2) by fasteners. The end of the deep channel (222) away from the chip removal groove (21) is connected to the recess (24).
5. The device for drilling oblique holes in metal workpieces according to claim 4, characterized in that: The connecting channel (221) includes a connecting hole (2211) and a grooved channel (2212). The connecting hole (2211) is opened on the inclined plate (2), and the grooved channel (2212) is opened on the side of the sealing bottom plate (23) near the inclined plate (2). The deep channel (222) is connected to the grooved channel (2212), and the connecting hole (2211) is connected to one of the deep channels (222).
6. The device for drilling oblique holes in metal workpieces according to claim 1, characterized in that: The lower side of the inclined plate (2) is hinged to the base (1). The inclined plate (2) is slidably provided with two sets of movable hinges (6). The two sets of movable hinges (6) are staggered along the hinge center line between the lower side of the inclined plate (2) and the base (1). The sliding direction of the movable hinges (6) on the inclined plate (2) is consistent with the tilt direction of the inclined plate (2). The movable hinges (6) have a first hinge body (61) and a second hinge body (62) that are hinged to each other. The first hinge body (61) is slidably connected to the inclined plate (2), and the second hinge body (62) is detachably connected to the base (1).
7. The device for drilling oblique holes in metal workpieces according to claim 6, characterized in that: Each set of the movable hinges (6) is provided in multiples and is spaced apart along the tilt direction of the inclined plate (2).
8. The device for drilling oblique holes in metal workpieces according to claim 6, characterized in that: The base (1) is provided with two columns of reference scale lines (16), the positions of the two columns of reference scale lines (16) correspond to the two sets of movable hinges (6) respectively, and the unit scale lines of the two columns of reference scale lines (16) are different; in each set of movable hinges (6), at least one of the second hinge bodies (62) of the movable hinge (6) is provided with an alignment scale line (17), the alignment scale line (17) is used to align with the reference scale line (16) to indicate the tilt angle of the inclined plate (2).
9. The device for drilling oblique holes in metal workpieces according to claim 8, characterized in that: The second hinge body (62) with the alignment line (17) is also provided with a vernier scale line (19). The base (1) is provided with an auxiliary reference scale line (18). The auxiliary reference scale line (18) and the vernier scale line (19) are equidistant scale lines. The scale unit of the vernier scale line (19) is smaller than the scale unit of the auxiliary reference scale line (18). The difference between the scale unit of the vernier scale line (19) and the auxiliary reference scale line (18) is between 0.02 and 0.05 mm.
10. A device for drilling oblique holes in metal workpieces according to claim 6, characterized in that: The inclined plate (2) and the base (1) are provided with rubber damping blocks (9). The rubber damping blocks (9) have a bottom surface and an inclined surface. The bottom surface of the rubber damping blocks (9) abuts against the base (1), and the inclined surface of the rubber damping blocks (9) abuts against the back of the inclined plate (2). The rubber damping blocks (9) are in a pre-compression deformation state. The rubber damping blocks (9) have different size specifications.