Part drilling device

Abstract

The invention provides a part drilling device, and belongs to the technical field of mechanical part machining. The part drilling device comprises a supporting frame, a driving assembly, a drilling assembly and a pressing assembly, the drilling assembly comprises at least two cutters, the at least two cutters are arranged in the same circumference at intervals, and the direction where the center line of the circumference is located is the same as the direction from the cutter backs to the cutter tips of the cutters; the driving assembly is connected with the supporting frame, and the driving assembly is used for driving each of the at least two cutters to synchronously stretch out and draw back in the radial direction of the circumference and driving the at least two cutters to synchronously rotate in the circumferential direction of the circumference; the pressing assembly is connected with the supporting frame and used for exerting pressure on the tool so that the tool nose of the tool can make contact with the workpiece. The processing efficiency can be improved.

Description

Technical Field

[0001] This disclosure belongs to the technical field of machining of mechanical parts, and particularly relates to a part drilling device. Background Art

[0002] Part drilling devices are widely used in machining to perform various machining operations such as drilling, reaming, boring, and counterboring on workpieces. The part drilling device leaves a cylindrical hole or cavity in the target area of the workpiece by means of rotary cutting or rotary extrusion.

[0003] In the related art, the part drilling device includes a drill bit and a driving member for controlling the rotation of the drill bit. During drilling, the driving member controls the drill bit to rotate in the target area of the workpiece.

[0004] However, the size of the drilled hole is usually affected by the diameter of the drill bit. When machining holes with different diameters, it is usually necessary to replace drill bits with different diameters, resulting in a longer drilling time and lower machining efficiency. Summary of the Invention

[0005] Embodiments of this disclosure provide a part drilling device that can machine holes with different diameters and improve machining efficiency. The technical solution is as follows:

[0006] Embodiments of this disclosure provide a part drilling device, which includes a support frame, a driving assembly, a drilling assembly, and a pressing assembly. The drilling assembly includes at least two cutting tools, and the at least two cutting tools are arranged at intervals in the same circumference. The direction of the center line of the circumference is the same as the direction from the back of the cutting tool to the tip of the cutting tool; the driving assembly is connected to the support frame, and the driving assembly is used to drive each of the at least two cutting tools to synchronously expand and contract along the radial direction of the circumference, and drive the at least two cutting tools to synchronously rotate along the circumferential direction of the circumference; the pressing assembly is connected to the support frame and is used to apply pressure to the cutting tool so that the tip of the cutting tool contacts the workpiece.

[0007] In another implementation manner of this disclosure, there are two cutting tools, and the two cutting tools are symmetrically arranged and the axis of symmetry is coaxial with the center line of the circumference; the driving assembly includes a driving member and two sliding arms, and the two sliding arms are arranged in one-to-one correspondence with the two cutting tools; the driving member is connected to one end of each of the two sliding arms, and the other end of the sliding arm is connected to the corresponding cutting tool; the driving member is used to drive the two sliding arms to approach or move away from each other along a direction perpendicular to the axis of symmetry of the two cutting tools, and drive the two sliding arms to synchronously rotate along the circumferential direction of the circumference.

[0008] In yet another implementation of the present disclosure, the driving component includes a driving motor, a lead screw, a first slider, a slide bar, and a rotating ring; the output end of the driving motor is connected to one end of the lead screw, the axis of the lead screw is coaxial with the symmetry axis, the first slider is sleeved outside the middle of the lead screw and is threadedly connected to the lead screw; the rotating ring is sleeved outside the first slider and can move relative to the lead screw, when the first slider rotates, the rotating ring rotates synchronously in the opposite direction; the slide bar is arranged perpendicular to the lead screw, and the other end of the lead screw passes through the slide bar, and the lead screw can rotate relative to the slide bar; the two sliding arms are respectively located on opposite sides of the lead screw, and the first end of each sliding arm is hinged to the rotating ring, the second end of each sliding arm is sleeved outside the slide bar, when the rotating ring moves, the second end of the sliding arm can move relative to the slide bar along the length direction of the slide bar, and when the rotating ring rotates, each sliding arm can rotate synchronously.

[0009] In yet another implementation of the present disclosure, the sliding arm includes a hinge rod and a second slider, one end of the hinge rod is hinged to the rotating ring, the second slider is sleeved outside the slide bar and can move relative to the slide bar along the length direction of the slide bar, and the second slider is hinged to the other end of the hinge rod.

[0010] In yet another implementation of the present disclosure, the pressing assembly includes a pressing driving member and two pressing arms, the pressing driving member is connected to the support frame; the two pressing arms correspond to the two cutting tools one by one and the two pressing arms correspond to the two second sliders one by one, one end of each pressing arm in the two pressing arms is connected to the corresponding cutting tool, the middle of the pressing arm passes through the corresponding second slider, and the pressing driving member is used to contact one of the two pressing arms to apply a pressure to the cutting tool along the back of the cutting tool to the tip of the cutting tool through the contacted pressing arm.

[0011] In another embodiment of the present invention, the clamping drive member includes a telescopic rod, a swinging member and a telescopic sleeve, one end of the telescopic rod is connected to the support frame, and the telescopic rod can be telescoped along the direction of the symmetry axis; the swinging member is connected to the support frame, and the swinging member can rotate relative to the support frame, the rotation axis of the swinging member is perpendicular to the symmetry axis and is located between the two clamping arms, the swinging member is hinged to the other end of the telescopic rod, and when the telescopic rod is telescoped, the swinging member can rotate to contact one of the two clamping arms; the telescopic sleeve is located between the swinging member and the support frame, and is located on opposite sides of the rotation axis of the swinging member with the telescopic rod, one end of the telescopic sleeve is connected to the support frame, and the other end of the telescopic sleeve is hinged to the swinging member, and when the telescopic rod is telescoped, the telescopic sleeve can be telescoped in the opposite direction synchronously.

[0012] In another implementation of the present disclosure, the swing member includes a first frame, two first connecting arms and two third sliders; the relatively arranged first side and second side of the first frame are both rotatably connected to the support frame, the two first connecting arms are located outside the first frame, and are respectively located at the relatively arranged third side and fourth side of the first frame, one end of each of the two first connecting arms is connected to the first frame, and the length direction of the first connecting arm is perpendicular to the symmetry axis; the two third sliders correspond to the two first connecting arms one by one, and each of the two third sliders is sleeved outside the corresponding first connecting arm and can slide relative to the corresponding first connecting arm, one of the two third sliders is hinged to the telescopic rod, and the other of the two third sliders is hinged to the telescopic sleeve.

[0013] In another implementation of the present disclosure, the tool includes a fixed rod, a sleeve rod and a blade, one end of the fixed rod is connected to the second slider; the top of the sleeve rod is coaxially sleeved outside the other end of the fixed rod and can move relative to the fixed rod, the sleeve rod is connected to the clamping arm, and the blade is located outside the bottom of the sleeve rod and connected to the sleeve rod.

[0014] In another implementation of the present disclosure, the part drilling device also includes two grinding assemblies, and the two grinding assemblies correspond one-to-one to the two tools. The grinding assembly includes a grinding block, and the grinding block is detachably connected to the outer side wall of the corresponding tool. The outer wall of the tool is the side wall of the tool facing away from the other tool.

[0015] In another implementation of the present disclosure, the grinding block includes a body and a protrusion, the protrusion is located on a side of the body facing the tool, and the protrusion is connected to the body; the grinding assembly also includes a connecting component, the connecting component includes an insertion rod, a toggle rod and a fourth elastic member, the insertion rod is located in the tool, and one end of the insertion rod is used to be inserted into the protrusion, the toggle rod is perpendicular to the insertion rod, one end of the toggle rod is connected to the insertion rod, and the other end extends out of the tool, the fourth elastic member is located in the tool, and both ends are respectively abutted against the other end of the insertion rod and the inner wall of the tool.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] When the part drilling device provided by the embodiment of the present disclosure is used to drill a workpiece, since the part drilling device includes a support frame, the support frame can provide a mounting base for other components. At the same time, since the part drilling device includes a drilling assembly, and the drilling assembly includes at least two tools, and the clamping assembly is used to apply pressure to the at least two tools so that the tool tips of the at least two tools can drill the workpiece, the workpiece can be drilled by the at least two tools under the downward pressure of the clamping assembly.

[0018] Moreover, since the part drilling device also includes a driving assembly, and the driving assembly is used to drive each of the at least two tools to synchronously extend and retract along the radial direction of the circle, the distance between each tool and the center line of the circle can be controlled by controlling the driving assembly to control the drilling area of ​​the tool, thereby controlling the diameter of the drilled hole, avoiding the need to replace the drill bit, and improving the drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a part drilling device provided by an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the right part in the cross-sectional view along the BB direction;

[0022] Figure 3 for Figure 1 The cross-sectional view along the AA direction;

[0023] Figure 4 forFigure 1 Enlarged view at position C in the figure;

[0024] Figure 5 is Figure 1 Schematic diagram of the left tool in the figure and its connection to the grinding component.

[0025] The meanings of the symbols in the figure are as follows:

[0026] 1. Support frame; 11. Support plate; 12. Connecting rod; 13. Second frame; 14. Second connecting arm;

[0027] 2. Drilling component; 21. Tool; 211. Fixed rod; 212. Sleeve rod; 213. Blade; 214. Second elastic member;

[0028] 3. Driving component; 31. Driving part; 311. Driving motor; 312. Lead screw; 313. First slider; 3131. Limit ring; 314. Slide bar; 3141. Limit plate; 315. Rotating ring; 32. Sliding arm; 321. Hinge rod; 322. Second slider; 3221. Hinge block; 323. First elastic member;

[0029] 4. Pressing component; 41. Pressing driving part; 411. Telescopic rod; 412. Oscillating part; 4121. First frame; 4122. First connecting arm; 4123. Third slider; 413. Telescopic sliding sleeve; 4131. Telescopic sleeve body; 4132. Telescopic sleeve rod; 4133. Telescopic slide plate; 42. Pressing arm; 421. Cross bar section; 422. Vertical bar section; 423. Hemisphere;

[0030] 5. Positioning component; 51. Positioning cylinder; 52. Third elastic member; 53. Limit rod; 54. Positioning block;

[0031] 6. Grinding component; 61. Grinding block; 611. Body; 612. Protrusion; 62. Connecting part; 621. Insert rod; 622. Poking rod; 623. Fourth elastic member; 7. Lifting driving cylinder. Specific implementation manners

[0032] To make the purpose, technical solutions and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0033] The embodiments of the present disclosure provide a part drilling device, as Figure 1 shown, the part drilling device includes a support frame 1, a driving component 3, a drilling component 2 and a pressing component 4,

[0034] The drilling assembly 2 includes at least two cutting tools 21. The at least two cutting tools 21 are arranged at intervals in the same circumference, and the direction where the center line of the circumference is located is the same as the direction from the back of the cutting tool 21 to the tip of the cutting tool. The driving assembly 3 is connected to the support frame 1. The driving assembly 3 is used to drive each of the at least two cutting tools 21 to synchronously expand and contract along the radial direction of the circumference, and to drive the at least two cutting tools 21 to synchronously rotate along the circumferential direction of the circumference. The pressing assembly 4 is connected to the support frame 1 and is used to apply pressure to the cutting tool 21 so that the tip of the cutting tool 21 contacts the workpiece.

[0035] When using the part drilling device provided by the embodiment of the present disclosure to drill a workpiece, since the part drilling device includes the support frame 1, the support frame 1 can be used to provide an installation basis for other components. At the same time, since the part drilling device includes the drilling assembly 2, and the drilling assembly 2 includes at least two cutting tools 21, and the pressing assembly 4 is used to apply pressure to the at least two cutting tools 21 so that the tips of the at least two cutting tools 21 can drill the workpiece, the workpiece can be drilled by the at least two cutting tools 21 under the downward pressure of the pressing assembly 4.

[0036] Moreover, since the part drilling device further includes the driving assembly 3, and the driving assembly 3 is used to drive each of the at least two cutting tools 21 to synchronously expand and contract along the radial direction of the circumference and to drive the at least two cutting tools 21 to synchronously rotate along the circumferential direction of the circumference, by controlling the driving assembly 3, the distance between each cutting tool 21 and the center line of the circumference can be controlled to control the drilling area of the cutting tool 21, thereby controlling the aperture size of the drilled hole and avoiding replacing the drill bit, and improving the drilling efficiency.

[0037] That is to say, when a hole with a smaller aperture needs to be drilled, control the driving assembly 3 to make each cutting tool 21 approach the center of the circumference to reduce the drilling area of the cutting tool 21, and then control the driving assembly 3 to make each cutting tool 21 synchronously rotate along the circumferential direction of the circumference to drill a hole with a smaller aperture. When a hole with a larger aperture needs to be drilled, control the driving assembly 3 to make each cutting tool 21 move away from the center of the circumference to increase the drilling area of the cutting tool 21, and then control the driving assembly 3 to make each cutting tool 21 synchronously rotate along the circumferential direction of the circumference to drill a hole with a larger aperture.

[0038] Optionally, there are two cutting tools 21. The two cutting tools 21 are symmetrically arranged and the axis of symmetry is coaxial with the center line of the circumference. The driving assembly 3 includes a driving member 31 and two sliding arms 32. The two sliding arms 32 are arranged in one-to-one correspondence with the two cutting tools 21. The driving member 31 is connected to one end of each of the two sliding arms 32, and the other end of the sliding arm 32 is connected to the corresponding cutting tool 21. The driving member 31 is used to drive the two sliding arms 32 to approach or move away from each other along the direction perpendicular to the axis of symmetry of the two cutting tools 21, and to drive the two sliding arms 32 to synchronously rotate along the circumferential direction of the circumference.

[0039] In the above implementation, the driving component 31 is used to drive the other ends of the two sliding arms 32 to move closer to or away from each other. The sliding arm 32 is used to drive the corresponding tool 21 to move synchronously.

[0040] In other examples, the number of tools 21 can also be other numbers, such as three, four, etc. If there are three tools 21, then the corresponding number of sliding arms 32 is three. If there are four tools 21, then the corresponding number of sliding arms 32 is four.

[0041] Optionally, the driving component 31 includes a driving motor 311, a lead screw 312, a first slider 313, a slide bar 314, and a rotating ring 315. The output end of the driving motor 311 is connected to one end of the lead screw 312. The axis of the lead screw 312 is coaxial with the axis of symmetry. The first slider 313 is sleeved outside the middle of the lead screw 312 and is threadedly connected to the lead screw 312. The rotating ring 315 is sleeved outside the first slider 313 and can move relative to the lead screw 312. When the first slider 313 rotates relative to the lead screw 312, the rotating ring 315 rotates synchronously in the opposite direction.

[0042] The slide bar 314 is arranged perpendicular to the lead screw 312, and the other end of the lead screw 312 passes through the slide bar 314. The lead screw 312 can rotate relative to the slide bar 314. The two sliding arms 32 are respectively located on opposite sides of the lead screw 312, and the first end of each sliding arm 32 is hinged to the rotating ring 315. The second end of each sliding arm 32 is sleeved outside the slide bar 314. When the rotating ring 315 moves, the second end of the sliding arm 32 can move relative to the slide bar 314 along the length direction of the slide bar 314, and when the rotating ring 315 rotates, each sliding arm 32 can rotate synchronously.

[0043] In the above implementation, the driving motor 311 is used to drive the lead screw 312 to rotate. After the lead screw 312 rotates, it is used to drive the first slider 313 to move along the length direction of the lead screw 312. The slide bar 314 is used to guide the two sliding arms 32.

[0044] Before drilling, it is necessary to adjust the distance between the two cutters 21 according to the diameters of different holes. Therefore, it is necessary to manually operate the first slider 313 so that the first slider 313 does not rotate with the lead screw 312 but can slide up or down relative to the lead screw 312. When the first slider 313 moves upward, the tops of the two sliding arms 32 will move upward accordingly, the bottoms of the two sliding arms 32 will slide on the slide bar 314, the distance between the bottoms of the two sliding arms 32 will be reduced, and the distance between the two cutters 21 will be reduced accordingly, enabling a smaller-diameter hole to be drilled. If a larger-diameter hole needs to be drilled, the lead screw 312 needs to be rotated in the reverse direction to make the first slider 313 move downward, increasing the distance between the two cutters 21, so that a larger-diameter hole can be drilled. There is no need to replace the drill bit, and the requirements for various hole diameters can be met by adjusting the distance between the two cutters 21.

[0045] After adjusting the position of the cutter 21, release the first slider 313 so that the first slider 313 rotates synchronously with the lead screw 312, the rotating ring 315 rotates in the opposite direction, and the cutter 21 will rotate synchronously to drill the workpiece.

[0046] Optionally, the sliding arm 32 includes a hinge rod 321 and a second slider 322. One end of the hinge rod 321 is hinged to the rotating ring 315, the second slider 322 is sleeved outside the slide bar 314 and can move relative to the slide bar 314 along the length direction of the slide bar 314, and the second slider 322 is hinged to the other end of the hinge rod 321.

[0047] In the above implementation, the second slider 322 is used to be sleeved outside the slide bar 314, and the hinge rod 321 is used to be hinged to the first slider 313.

[0048] When the first slider 313 moves upward relative to the lead screw 312, the tops of the two hinge rods 321 will move upward accordingly, the two second sliders 322 will slide on the slide bar 314, the distance between the two second sliders 322 will be reduced, and the distance between the two cutters 21 will be reduced accordingly, enabling a smaller-diameter hole to be drilled. If a larger-diameter hole needs to be drilled, the lead screw 312 needs to be rotated in the reverse direction to make the first slider 313 move downward, the rotating ring 315 moves downward accordingly, increasing the distance between the two cutters 21, so that a larger-diameter hole can be drilled. There is no need to replace the drill bit, and the requirements for various hole diameters can be met by adjusting the distance between the two cutters 21.

[0049] Optionally, the sliding arm 32 further includes a first elastic member 323. The first elastic member 323 is sleeved outside the slide bar 314 and is located on the side of the second slider 322 away from the lead screw 312. The two ends of the first elastic member 323 are respectively connected to the second slider 322 and the slide bar 314.

[0050] In the above implementation, the first elastic member 323 is used to restore the second slider 322.

[0051] In the embodiment of the present disclosure, the first elastic member 323 is a telescopic spring, and the original state of the first elastic member 323 is the natural state.

[0052] In the embodiment of the present disclosure, for the convenience of installing the rotating ring 315, two limiting rings 3131 are fixedly sleeved outside the first slider 313. The two limiting rings 3131 are sleeved outside the first slider 313 at intervals along the length direction of the lead screw 312 and are both fixedly connected to the first slider 313. The rotating ring 315 is located between the two limiting rings 3131. The inner diameter of the rotating ring 315 is smaller than the outer diameter of the limiting ring 3131. There is friction between the rotating ring 315 and the first slider 313, so that when the first slider 313 rotates, the rotating ring 315 can rotate in the reverse direction. One end of the hinge rod 321 is hinged to the rotating ring 315 through a hinge shaft.

[0053] The limiting ring 3131 plays a limiting role to prevent the rotating ring 315 from detaching from the first slider 313. When the first slider 313 rotates and moves, the rotating ring 315 will move along the length direction of the lead screw 312, thereby driving the hinge rod 321 to move.

[0054] In the embodiment of the present disclosure, both ends of the sliding rod 314 are respectively connected to a limiting plate 3141, and the limiting plate 3141 is connected to one end of the first elastic member 323. The limiting plate 3141 is used to limit the second slider 322 to prevent the second slider 322 from detaching from the sliding rod 314.

[0055] Figure 2 For Figure 1 the right part structural schematic diagram in the sectional view along the B-B direction, in combination with Figure 2 this, in the embodiment of the present disclosure, for the convenience of hinging the second slider 322 and the hinge rod 321, a U-shaped hinge block 3221 is connected to the side of the second slider 322 facing the first slider 313. The hinge rod 321 is located in the U-shaped groove of the hinge block 3221 and is hinged to the opposite two groove walls of the U-shaped groove of the hinge block 3221.

[0056] Continue to refer to Figure 1 this, optionally, the pressing assembly 4 includes a pressing driving member 41 and two pressing arms 42, and the pressing driving member 41 is connected to the support frame 1.

[0057] The two pressing arms 42 correspond to the two cutting tools 21 one by one, and the two pressing arms 42 correspond to the two second sliders 322 one by one. One end of each of the two pressing arms 42 is connected to the corresponding cutting tool 21. The middle part of the pressing arm 42 passes through the corresponding second slider 322, and the other end of the pressing arm 42 is used to contact one of the pressing driving members 41, so as to apply a pressure along the back of the cutting tool 21 to the tip of the cutting tool 21 through the contacted pressing arm 42.

[0058] In the above implementation, the pressing drive member 41 is used to contact one of the pressing arms 42, so as to apply pressure to the contacted pressing arm 42. The pressing arm 42 is used to apply pressure to the tool 21 along the back of the tool 21 to the tip of the tool, so that the tool 21 can be pressured to drill the workpiece.

[0059] The pressing drive member 41 includes a telescopic rod 411, a swinging member 412 and a telescopic sliding sleeve 413. One end of the telescopic rod 411 is connected to the support frame 1, and the telescopic rod 411 can telescopically move along the direction where the symmetry axis is located.

[0060] The swinging member 412 is connected to the support frame 1, and the swinging member 412 can rotate relative to the support frame 1. The rotation axis of the swinging member 412 ( Figure 3 axis a therein) is perpendicular to the symmetry axis and is located between the two pressing arms 42. The swinging member 412 is hinged to the other end of the telescopic rod 411. When the telescopic rod 411 telescopically moves, the swinging member 412 can rotate to contact one of the two pressing arms 42.

[0061] The telescopic sliding sleeve 413 is located between the swinging member 412 and the support frame 1 and is respectively located on the opposite sides of the rotation axis of the swinging member 412 from the telescopic rod 411. One end of the telescopic sliding sleeve 413 is connected to the support frame 1, and the other end of the telescopic sliding sleeve 413 is hinged to the swinging member 412. When the telescopic rod 411 telescopically moves, the telescopic sliding sleeve 413 can telescopically move in the opposite direction synchronously.

[0062] In the above implementation, the telescopic rod 411 is used to elongate or shorten. The swinging member 412 is used to be rotatably connected to the support frame 1. When the telescopic rod 411 telescopically moves, the swinging member 412 can swing. The telescopic sliding sleeve 413 is used to connect the other side of the swinging member 412 to the support frame 1.

[0063] During use, controlling the telescopic rod 411 to shorten can drive the left side of the swinging member 412 to move upward, so that the swinging member 412 rotates clockwise, that is, the left side of the swinging member 412 moves upward while the right side moves downward. At this time, the telescopic sliding sleeve 413 elongates synchronously. When the right side of the swinging member 412 moves downward, it can contact the right pressing arm 42, so as to apply pressure to the pressing arm 42. The pressing arm 42 can apply pressure to the corresponding tool 21 on the right side, so that the tool 21 on the right side drills. After long-term work, the tool 21 on the right side will heat up. Then, the telescopic rod 411 can be controlled to elongate, and the tool 21 on the left side can be replaced for drilling, and the tool 21 on the right side can be stopped from working and slowly cooled. The tool 21 can be replaced without being removed, improving the work efficiency. That is to say, the above structure can enable the two tools 21 to work alternately, thereby prolonging the service life of the tool 21.

[0064] See againFigure 1 The telescopic sliding sleeve 413 includes a telescopic sleeve body 4131, a telescopic sleeve rod 4132, and a telescopic sliding plate 4133. The top of the telescopic sleeve body 4131 is connected to the support frame 1. One end of the telescopic sleeve rod 4132 is connected to the telescopic sliding plate 4133, and both are located inside the telescopic sleeve body 4131. The telescopic sliding plate 4133 is in sliding contact with the inner wall of the telescopic sleeve body 4131. The other end of the telescopic sleeve rod 4132 extends out of the bottom of the telescopic sleeve body 4131 and is hinged to the third slider 4123 in the swinging member 412 (introduced below). In this way, the telescopic sliding sleeve 413 can be reversely telescoped along with the telescopic rod 411.

[0065] Figure 3 For Figure 1 the sectional view along the A-A direction in Figure 3 Optionally, the swinging member 412 includes a first frame body 4121, two first connecting arms 4122, and two third sliders 4123. The relatively arranged first side wall and second side wall of the first frame body 4121 are both rotatably connected to the support frame 1. The two first connecting arms 4122 are respectively located outside the relatively arranged third side wall and fourth side wall of the first frame body 4121. One end of each of the two first connecting arms 4122 is connected to the first frame body 4121, and the length direction of the first connecting arm 4122 is perpendicular to the axis of symmetry.

[0066] The two third sliders 4123 correspond to the two first connecting arms 4122 one by one. Each of the two third sliders 4123 is sleeved outside the corresponding first connecting arm 4122 and can slide relative to the corresponding first connecting arm 4122. One of the two third sliders 4123 is hinged to the telescopic rod 411, and the other of the two third sliders 4123 is hinged to the telescopic sliding sleeve 413.

[0067] In the above implementation, the first frame body 4121 is used to be rotatably connected to the support frame 1. The first connecting arm 4122 is used to be connected to the first frame body 4121 and provides an installation basis for the third slider 4123. The third slider 4123 is used to be hinged to the telescopic rod 411 and the telescopic sliding sleeve 413.

[0068] When the telescopic rod 411 is started to be shortened, it can drive the third slider 4123 and the first connecting arm 4122 to move upward, and at the same time drive the first frame body 4121 to rotate clockwise, that is, the left side of the first frame body 4121 moves upward while the right side moves downward. At this time, the right third slider 4123 also moves downward accordingly, driving the telescopic sliding sleeve 413 to slide downward.

[0069] Refer to again Figure 1, optionally, the tool 21 includes a fixed rod 211, a sleeve rod 212, and a blade 213. One end of the fixed rod 211 is connected to the second slider 322, and the length direction of the fixed rod 211 is the same as the direction where the axis of symmetry is located. The top of the sleeve rod 212 is coaxially sleeved outside the other end of the fixed rod 211 and can move relative to the fixed rod 211. The blade 213 is located outside the bottom of the sleeve rod 212 and is connected to the sleeve rod 212.

[0070] In the above implementation, the fixed rod 211 is used to be connected to the second slider 322 so as to move synchronously with the second slider 322. The sleeve rod 212 is sleeved outside the fixed rod 211 and is used to move relative to the fixed rod 211 under the downward pressure of the pressing arm 42, so as to drive the blade 213 to move downward, and the blade 213 drills a hole in the workpiece under the action of the downward pressure.

[0071] Exemplarily, one end of the fixed rod 211 can be welded to the side of the second slider 322 facing the workpiece, or the fixed rod 211 is press-fitted into the second slider 322.

[0072] Figure 4 For Figure 1 the enlarged view at C in Figure 4 , optionally, the tool 21 further includes a second elastic member 214. The second elastic member 214 is located inside the sleeve rod 212 and its two ends are respectively connected to the other end of the fixed rod 211 and the inner wall of the bottom of the sleeve rod 212. The second elastic member 214 is used to reset the sleeve rod 212 and the blade 213.

[0073] In the embodiment of the present disclosure, the second elastic member 214 is a telescopic spring, and the original state of the second elastic member 214 is the natural state.

[0074] Continue to refer to Figure 1 , exemplarily, in order to facilitate the connection between the sleeve rod 212 and the pressing arm 42, the pressing arm 42 is an L-shaped rod member. The pressing arm 42 includes a cross bar section 421, a vertical bar section 422, and a hemispherical body 423. The cross bar section 421 is perpendicularly connected to the vertical bar section 422. One end of the cross bar section 421 away from the vertical bar section 422 is connected to the sleeve rod 212. One end of the vertical bar section 422 away from the cross bar section 421 is connected to the hemispherical body 423, and the hemispherical body 423 is used to contact the pressing driving member 41.

[0075] Optionally, the part drilling device further includes a positioning assembly 5. The positioning assembly 5 is located between the two tools 21, and the positioning assembly 5 is connected to the driving assembly 3. The positioning assembly 5 can expand and contract along the direction where the axis of symmetry is located, and the positioning assembly 5 is used to contact the workpiece when the tool 21 drills a hole in the workpiece.

[0076] In the above implementation, the positioning assembly 5 is used to abut against the workpiece when the tool 21 drills a hole in the workpiece so as to press the workpiece.

[0077] Optionally, the positioning assembly 5 includes a positioning cylinder 51, a third elastic member 52, a limiting rod 53 and a positioning block 54, the top end of the positioning cylinder 51 is connected to the sliding rod 314, and the axial direction of the positioning cylinder 51 is the same as the direction of the symmetry axis.

[0078] One end of the limiting rod 53 is located inside the positioning tube 51, and the other end is located outside the positioning tube 51. The limiting rod 53 can move relative to the positioning tube 51. The third elastic member 52 is located inside the positioning tube 51, and its two ends are respectively abutted against the inner top wall of the positioning tube 51 and one end of the limiting rod 53. The positioning block 54 is located outside the positioning tube 51 and is connected to the other end of the limiting rod 53.

[0079] In the above implementation, the positioning cylinder 51 is used to connect with the slide bar 314, and the third elastic member 52 is used to apply elastic force to the limiting rod 53, so that the limiting rod 53 can drive the positioning block 54 to move up and down along the axis of the symmetry axis. The positioning block 54 is used to contact the workpiece.

[0080] Optionally, the part drilling device further includes two grinding assemblies 6, and the two grinding assemblies 6 correspond to the two cutters 21 one by one. The grinding assembly 6 includes a grinding block 61 and a connecting component 62, and the grinding block 61 is detachably connected to the outer side wall of the corresponding cutter 21 through the connecting component 62, and the outer wall of the cutter 21 is the side wall of the cutter 21 on the side away from the other cutter 21.

[0081] In the above implementation, the grinding block 61 is used to grind the hole wall drilled by the tool 21. The connecting component 62 is used to detachably connect the grinding block 61 to the side wall of the tool 21.

[0082] Figure 5 for Figure 1 Schematic diagram of the tool on the left and its connection with the grinding assembly, combined with Figure 5 Optionally, the grinding block 61 includes a body 611 and a protrusion 612 , the protrusion 612 is located on a side of the body 611 facing the tool 21 , and the protrusion 612 is connected to the body 611 .

[0083] The connecting component 62 includes an insert rod 621, a toggle rod 622 and a fourth elastic member 623. The insert rod 621 is located in the tool 21, and one end of the insert rod 621 is used to be inserted into the protrusion 612. The toggle rod 622 is perpendicular to the insert rod 621. One end of the toggle rod 622 is connected to the insert rod 621, and the other end extends out of the tool 21. The fourth elastic member 623 is located in the tool 21, and its two ends are respectively against the other end of the insert rod 621 and the inner wall of the tool 21. The fourth elastic member 623 can apply pressure to the insert rod 621 so that the insert rod 621 is inserted into the protrusion 612.

[0084] In the above implementation manner, the grinding block 61 is installed in the corresponding blade 213. At the same time, the protrusion 612 is inserted into the blade 213, and the insertion rod 621 is inserted into the slot of the protrusion 612. The fourth elastic member 623 always maintains a state where the pressure is released and can apply pressure to the insertion rod 621 to lock it after it is inserted into the protrusion 612.

[0085] The side wall of the protrusion 612 is arc-shaped. The insertion rod 621 is a T-shaped insertion rod. The T-shaped head of the insertion rod 621 is located inside the blade 213. In this way, when it is inserted into the blade 213, it can cooperate with the bottom end of the insertion rod 621 to be inserted into the blade 213 more smoothly. When drilling a hole with one of the blades 213, the side wall of the other blade 213 fits against the inner wall of the hole, and the grinding block 61 can play a role in grinding burrs. When grinding is not required, the toggle lever 622 is toggled to move the insertion rod 621 upward to disengage from the protrusion 612, and the grinding block 61 can be removed. That is to say, the above structure enables the blade 213 to remove burrs while drilling, eliminating the need for manual deburring, saving working time, and improving work efficiency.

[0086] Optionally, the support frame 1 includes a support plate 11, a plurality of connecting rods 12, a second frame body 13, and two second connecting arms 14. The plurality of connecting rods 12 are arranged parallel to each other at intervals along the circumferential direction of the support plate 11 on the same plate surface of the support plate 11, and one end of each connecting rod 12 in the plurality of connecting rods 12 is perpendicularly connected to the support plate 11.

[0087] The second frame body 13 and the plurality of connecting rods 12 are located on the same plate surface of the support plate 11. The second frame body 13 is spaced from the support plate 11, and the second frame body 13 is connected to the other ends of the connecting rods 12. The two second connecting arms 14 are respectively arranged oppositely, and one end of each second connecting arm 14 is connected to one end of the second frame body 13. The other end of the second connecting arm 14 is rotatably connected to the first frame body 4121. The length direction of the second connecting arm 14 is the same as the length direction of the connecting rod 12. The driving motor 311 is located between the second frame body 13 and the support plate 11.

[0088] In the above implementation manner, the support plate 11 is used to enclose a space for accommodating the driving motor 311 between it and the second frame body 13 to protect the driving motor 311. The connecting rods 12 are used to connect the second frame body 13 and the support plate 11 together. The second connecting arms 14 are used to rotatably connect the second frame body 13 and the first frame body 4121 together.

[0089] Optionally, the part drilling device further includes a lifting driving cylinder 7. The lifting driving cylinder 7 is located between the second frame body 13 and the support plate 11, and one end of the lifting driving cylinder 7 is connected to the support plate 11, and the other end is connected to the driving motor 311. The lifting driving cylinder 7 can expand and contract along the length direction of the lead screw 312.

[0090] In the above implementation, the lifting drive cylinder 7 is used to control the lifting of the driving motor 311, the screw rod 312 and the sliding arm 32, so as to control the lifting of the tool 21.

[0091] Exemplarily, the lifting drive cylinder 7 is an oil cylinder.

[0092] The following briefly introduces the working process of the parts drilling device provided by the embodiment of the present disclosure:

[0093] The lifting drive cylinder 7 controls the lifting and lowering of the tool 21. The drive motor 311 controls the movement of the tool 21. Before drilling, the distance between the two tools 21 needs to be adjusted according to the diameter of different holes. After the drive motor 311 is started, the first slider 313 slides upward or downward on the screw rod 312. When the first slider 313 moves upward, the rotating ring 315 moves upward accordingly, and the top ends of the two sliding arms 32 move upward accordingly, and the bottom ends of the two sliding arms 32 slide on the slide bar 314. The distance between the bottom ends of the two sliding arms 32 will be reduced, and the distance between the two tools 21 will be reduced accordingly, and a hole with a smaller diameter can be drilled. If a hole with a larger diameter needs to be drilled, the screw rod 312 needs to be rotated in the opposite direction, so that the first slider 313 moves downward, and the rotating ring 315 moves downward accordingly, so that the distance between the two tools 21 is increased, and a hole with a larger diameter can be drilled without changing the drill bit. The requirements of various hole diameters can be met by adjusting the distance between the two tools 21.

[0094] Moreover, when drilling, the telescopic rod 411 is controlled to shorten, which can drive the left side of the swing member 412 to move upward, so that the swing member 412 rotates clockwise, that is, the left side of the swing member 412 moves upward while the right side moves downward. At this time, the telescopic sleeve 413 extends. When the right side of the swing member 412 moves downward, it can contact the clamping arm 42 on the right, thereby applying pressure to the clamping arm 42. The clamping arm 42 can apply pressure to the corresponding tool 21 on the right side, so that the tool 21 on the right side can drill holes. After working for a long time, the tool 21 on the right side will heat up, and the telescopic rod 411 can be controlled to extend, so that the tool 21 on the left side can be replaced for drilling, and the tool 21 on the right side can be stopped and slowly cooled. The tool 21 can be replaced without removing it, thereby improving work efficiency.

[0095] When drilling, the grinding block 61 is installed in the corresponding blade 213, and the protrusion 612 is inserted into the blade 213, so that the insertion rod 621 is inserted into the slot of the protrusion 612. The fourth elastic member 623 always keeps the pressure released, and can apply pressure to the insertion rod 621, so that it is locked after being inserted into the protrusion 612. When one of the blades 213 is drilling, the side wall of the blade 213 on the other side fits with the inner wall of the hole, and the grinding block 61 can play the role of grinding burrs. When grinding is not required, working time is saved and work efficiency is improved.

[0096] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A parts drilling device, characterized in that: The part drilling device comprises a support frame (1), a driving assembly (3), a drilling assembly (2) and a pressing assembly (4). The drilling assembly (2) comprises at least two cutters (21), the at least two cutters (21) being arranged at intervals in the same circle, and the direction of the center line of the circle is the same as the direction from the back of the cutter to the tip of the cutter (21); The driving assembly (3) is connected to the support frame (1), and the driving assembly (3) is used to drive each of the at least two cutting tools (21) to synchronously extend and retract along the radial direction of the circumference, and to drive the at least two cutting tools (21) to synchronously rotate along the circumferential direction of the circumference; The clamping assembly (4) is connected to the support frame (1) and is used to apply pressure to the tool (21) so that the tip of the tool (21) contacts the workpiece.

2. The parts drilling device according to claim 1, characterized in that: There are two cutting tools (21), the two cutting tools (21) are symmetrically arranged and the axis of symmetry is coaxial with the center line of the circle; The driving assembly (3) comprises a driving component (31) and two sliding arms (32), wherein the two sliding arms (32) are arranged in a one-to-one correspondence with the two cutting tools (21); The driving component (31) is connected to one end of each of the two sliding arms (32), and the other end of the sliding arm (32) is connected to the corresponding tool (21); The driving component (31) is used to drive the two sliding arms (32) to move toward or away from each other along a direction perpendicular to the symmetry axes of the two tools (21), and to drive the two sliding arms (32) to rotate synchronously along the circumferential direction of the circle.

3. The parts drilling device according to claim 2, characterized in that: The driving component (31) comprises a driving motor (311), a screw rod (312), a first sliding block (313), a sliding rod (314) and a rotating ring (315); The output end of the driving motor (311) is connected to one end of the screw rod (312), the axis of the screw rod (312) is coaxial with the symmetry axis, and the first sliding block (313) is sleeved outside the middle part of the screw rod (312) and is threadedly connected to the screw rod (312); The rotating ring (315) is sleeved outside the first sliding block (313) and is movable relative to the screw rod (312); when the first sliding block (313) rotates, the rotating ring (315) rotates synchronously in the opposite direction; The sliding rod (314) is arranged perpendicularly to the screw rod (312), and the other end of the screw rod (312) passes through the sliding rod (314), and the screw rod (312) can rotate relative to the sliding rod (314); The two sliding arms (32) are respectively located on opposite sides of the screw rod (312), and the first end of each sliding arm (32) is hinged to the rotating ring (315), and the second end of each sliding arm (32) is sleeved outside the sliding rod (314). When each sliding arm (32) moves on the rotating ring (315), the second end of the sliding arm (32) can move relative to the sliding rod (314) along the length direction of the sliding rod (314), and each sliding arm (32) can rotate synchronously when the rotating ring (315) rotates.

4. The parts drilling device according to claim 3, characterized in that: The sliding arm (32) comprises a hinged rod (321) and a second slider (322), one end of the hinged rod (321) is hinged to the rotating ring (315), the second slider (322) is sleeved outside the sliding rod (314) and can move relative to the sliding rod (314) along the length direction of the sliding rod (314), and the second slider (322) is hinged to the other end of the hinged rod (321).

5. The parts drilling device according to claim 4, characterized in that: The clamping assembly (4) comprises a clamping drive member (41) and two clamping arms (42), wherein the clamping drive member (41) is connected to the support frame (1); The two clamping arms (42) correspond one-to-one to the two cutters (21) and the two clamping arms (42) correspond one-to-one to the two second slide blocks (322); one end of each of the two clamping arms (42) is connected to the corresponding cutter (21); the middle of the clamping arm (42) passes through the corresponding second slide block (322); the clamping drive member (41) is used to contact one of the two clamping arms (42) so as to apply pressure along the back of the cutter (21) to the tip of the cutter (21) through the contacted clamping arm (42).

6. The parts drilling device according to claim 5, characterized in that: The pressing driving member (41) comprises a telescopic rod (411), a swinging member (412) and a telescopic sliding sleeve (413); one end of the telescopic rod (411) is connected to the support frame (1); and the telescopic rod (411) can be telescoped along the direction where the symmetry axis is located; The swing member (412) is connected to the support frame (1), and the swing member (412) can rotate relative to the support frame (1). The rotation axis of the swing member (412) is perpendicular to the symmetry axis and is located between the two clamping arms (42). The swing member (412) is hinged to the other end of the telescopic rod (411). When the telescopic rod (411) is extended or retracted, the swing member (412) can rotate to contact one of the two clamping arms (42); The telescopic sleeve (413) is located between the swing member (412) and the support frame (1), and is located on opposite sides of the rotation axis of the swing member (412) with the telescopic rod (411), one end of the telescopic sleeve (413) is connected to the support frame (1), and the other end of the telescopic sleeve (413) is hinged to the swing member (412), and when the telescopic rod (411) is extended or retracted, the telescopic sleeve (413) can be synchronously extended or retracted in the opposite direction.

7. The parts drilling device according to claim 6, characterized in that: The swinging member (412) comprises a first frame (4121), two first connecting arms (4122) and two third sliding blocks (4123); The first side and the second side of the first frame (4121) which are arranged opposite to each other are both rotatably connected to the support frame (1); the two first connecting arms (4122) are located outside the first frame (4121) and are respectively located on the third side and the fourth side of the first frame (4121) which are arranged opposite to each other; one end of each of the two first connecting arms (4122) is connected to the first frame (4121); and the length direction of the first connecting arm (4122) is perpendicular to the symmetry axis; The two third sliders (4123) correspond to the two first connecting arms (4122) respectively, and each of the two third sliders (4123) is sleeved outside the corresponding first connecting arm (4122) and can slide relative to the corresponding first connecting arm (4122), one of the two third sliders (4123) is hinged to the telescopic rod (411), and the other of the two third sliders (4123) is hinged to the telescopic sliding sleeve (413).

8. The parts drilling device according to claim 5, characterized in that: The tool (21) comprises a fixing rod (211), a sleeve rod (212) and a blade (213). One end of the fixing rod (211) is connected to the second sliding block (322); The top of the sleeve rod (212) is coaxially sleeved outside the other end of the fixed rod (211) and is movable relative to the fixed rod (211); the sleeve rod (212) is connected to the clamping arm (42); and the blade (213) is located outside the bottom of the sleeve rod (212) and is connected to the sleeve rod (212).

9. The part drilling device according to any one of claims 1 to 8, characterized in that: The part drilling device further comprises two grinding assemblies (6), wherein the two grinding assemblies (6) correspond one to one to the two cutting tools (21). The grinding assembly (6) comprises a grinding block (61), wherein the grinding block (61) is detachably connected to the outer side wall of the corresponding tool (21), and the outer wall of the tool (21) is the side wall of the tool (21) facing away from the other tool (21).

10. The parts drilling device according to claim 9, characterized in that: The grinding block (61) comprises a body (611) and a protrusion (612), wherein the protrusion (612) is located on a side of the body (611) facing the tool (21), and the protrusion (612) is connected to the body (611); The grinding assembly (6) also includes a connecting component (62), the connecting component (62) includes an insertion rod (621), a toggle rod (622) and a fourth elastic member (623), the insertion rod (621) is located in the tool (21), and one end of the insertion rod (621) is used to be inserted into the protrusion (612), the toggle rod (622) is perpendicular to the insertion rod (621), one end of the toggle rod (622) is connected to the insertion rod (621), and the other end extends out of the tool (21), the fourth elastic member (623) is located in the tool (21), and the two ends thereof are respectively against the other end of the insertion rod (621) and the inner wall of the tool (21).

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