Double-beam multi-axis numerical control drilling device

Abstract

The application provides a double-beam multi-axis numerical control drilling device, which comprises a machine base serving as a support and mounting carrier, a workbench for placing a plate material is arranged on the machine base, slide rails and a rack are arranged on the two sides of the workbench along the length direction, two horizontal slide beams are arranged on the slide rails in a back-to-back mode, a drill bit is arranged on each of the slide beams, a screw distance adjusting mechanism for adjusting the distance between the two slide beams and a locking mechanism for fixedly connecting the two slide beams to realize synchronous movement are arranged between the two slide beams, a driving device is arranged on the slide beams and used for driving the slide beams to move, and the driving device comprises a driving motor and a driving gear arranged on the output shaft of the driving motor and engaged with the rack. The double-beam multi-axis numerical control drilling device has the advantages of compact structure, stable and reliable operation, high machining efficiency and good effect, and wide application range.

Description

TECHNICAL FIELD

[0001] The present application relates to a drilling machine, in particular to a double-beam multi-axis numerical control drilling device. BACKGROUND

[0002] At present, for the drilling operation of processing metal plates and parts, artificial marking, punching and using ordinary drilling machines to process single holes are usually adopted, which is time-consuming and laborious, has low production efficiency and large labor intensity of workers, and it is difficult to guarantee the processing quality. Therefore, numerical control drilling machines appear to improve the precision and automation degree, but the traditional numerical control drilling machines have low efficiency and precision when drilling large area plates due to the influence of structure. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a double-beam multi-axis numerical control drilling device which can drill large plates, has high efficiency and precision, and can realize double-beam distance adjustment.

[0004] The present application provides a double-beam multi-axis numerical control drilling device, which comprises:

[0005] A machine base 1 is provided as a support and mounting carrier, and a workbench 2 for placing plates is arranged on the machine base 1, and slide rails 11 and racks 12 are arranged on both sides of the workbench 2 along the length direction;

[0006] Two cross beam frames are arranged back to back, and the two cross beam frames are horizontally slidably arranged on the slide rails 11, a drill bit is arranged on each cross beam frame, a screw distance adjusting mechanism for adjusting the distance between the two cross beam frames and a locking mechanism for realizing fixed connection between the two cross beam frames to realize synchronous movement are arranged between the two cross beam frames;

[0007] A driving device is arranged on the cross beam frame and used for driving the cross beam frame to move, and the driving device comprises a driving motor and a driving gear 13 arranged on the output shaft of the driving motor and engaged with the rack 12.

[0008] Further, the screw distance adjusting mechanism and the locking mechanism are both two and symmetrically arranged at the two ends of the cross beam frame.

[0009] Further, the screw distance adjusting mechanism comprises a screw rod 61 parallel to the length direction of the slide rail 11 and a screw sleeve 62 threadedly connected to the screw rod 61, the screw rod 61 is arranged on an adjusting motor of one of the cross beam frames, and the screw sleeve is fixedly arranged on the other cross beam frame.

[0010] Further, the locking mechanism comprises a guide rail 3 and a lock 4, the guide rail 3 is fixed on one of the beam frames and the length direction of the guide rail 3 is parallel to the sliding direction of the beam frame, the lock 4 is fixed on the other beam frame, the lock 4 is provided with a guide hole for the guide rail 3 to pass through and a locking assembly for connecting with the guide rail 3 and locking the guide rail 3.

[0011] Further, the lock 4 comprises a lock body 41 fixed on the beam frame by bolts, the lock body 41 is formed with a sliding cavity 410, the sliding cavity 410 is slidably provided with a sliding plug 42, the sliding plug 42 divides the sliding cavity 410 into two rod cavities, the sliding plug 42 is provided with a sliding plug rod 421, the two ends of the sliding plug rod 421 extend to the outside of the lock body 41 and are fixedly connected with the guide rail 3; the two rod cavities are communicated through an oil channel, the oil channel is provided with a first valve core 51 and a second valve core 53 in parallel, the first valve core 51 and the second valve core 53 are normally closed valve cores to block the communication of the two rod cavities and realize locking, the side wall of the lock body 41 is provided with an electromagnet 44 connected with the first valve core 51, when the electromagnet 44 is powered on and / or the second valve core 53 is manually pressed, the two rod cavities are communicated and the locking is released.

[0012] Further, the sliding cavities 410 are two and arranged in parallel, the two sliding cavities are both provided with independent pipelines, the guide hole is located between the two sliding cavities, the end of the sliding plug rod is fixed with a connecting seat 43, and the connecting seat 43 is fixed on the upper surface of the guide rail 3 by bolts.

[0013] Further, the two ends of the rod cavities are coaxially provided with stepped holes and form oil cavities 4101, and the oil channel is connected between the two oil cavities; the oil channel comprises a first oil channel 411 and a second oil channel 419 which are communicated with the oil cavities respectively, the first oil channel 411 is branched into a first branch 412 and a second branch 414, the second oil channel 419 is branched into a third branch 418 and a fourth branch 416, a first valve core cavity 415 is arranged between the second branch 414 and the fourth branch 416, the first valve core cavity 415 is slidably provided with the first valve core 51 and a first elastic member 52 which has an outward movement tendency of the first valve core 51 and blocks the communication between the second branch and the fourth branch; a second valve core cavity 417 is arranged between the first branch 412 and the third branch 418, the second valve core cavity 417 is slidably provided with the second valve core 53 and a second elastic member 54 which has an outward movement tendency of the second valve core 53 and blocks the communication between the first branch and the fourth branch, and the end of the second valve core 53 forms a pressing part for manual pressing.

[0014] Further, the top surface of the second valve core is flush with or lower than the top surface of the lock body 41.

[0015] Further, the bottom surface of the lock body 41 is provided with a mounting groove 400 extending along the length direction, the two ends of the mounting groove 400 extend to the outside of the lock body 41, and the inner wall of the mounting groove 400 is provided with one or more limiting convex strips 4001, and a sliding block is detachably mounted in the mounting groove 400 through a bolt, and the guide hole is arranged on the bottom surface of the sliding block.

[0016] Further, the driving device comprises a main driving device arranged on one of the beam frames and a secondary driving device arranged on the other beam frame, the secondary driving device is opposite to the rotation direction of the main driving device, the output force of the secondary driving device is smaller than that of the main driving device and forms a damping force, and the main driving device and the secondary driving device act in working and distance adjustment.

[0017] The double-beam multi-axis numerical control drilling device has the following advantages: the double-beam multi-axis numerical control drilling device is provided with double beam frames, which greatly improves the drilling efficiency; the workbench is arranged, which can place and process large plates; the material collecting groove and the spiral conveying mechanism are arranged at the lower end of the workbench, which can realize automatic conveying and storage of the falling materials and is convenient for cleaning; the distance adjusting mechanism is arranged on the two beam frames, which can adjust the distance between the two beam frames to meet different use requirements, and the adjustment is convenient, labor-saving and high in accuracy; the locking mechanism is arranged, which can lock and fix the two beam frames to avoid relative slipping during movement, greatly improves the running stability, protects the distance adjusting mechanism and avoids stress deformation; the sliding cavity and sliding plug mechanism are adopted, which is compact in structure, small in size, convenient in processing, low in cost, can be locked at any position, has large locking force and will not slip, and has good locking effect; the double sliding plug structure is adopted, which improves the reliability and stability of the locking and can generate symmetrical force, has good locking effect, forms double insurance and is high in safety; the double distance adjusting and double locking are arranged, which improves the movement balance between the two beam frames and further improves the overall processing accuracy; the electromagnet is arranged, which can realize automatic unlocking, has small installation size, low cost and corresponding fast speed, and is stable and reliable in operation; the manual valve core is connected in parallel on the oil way of the oil cavity, which can be manually pressed to communicate and realize unlocking in special or emergency state, is simple in operation and high in safety; the top surface of the manual valve core is lower than the top surface of the lock body, which can avoid accidental touch and improve the safety in use; the detachable sliding block is arranged, which can be quickly detached and replaced according to different use requirements, is high in universality and wide in use range; the double-beam multi-axis numerical control drilling device is compact in structure, stable and reliable in operation, high in processing efficiency and good in effect, and is wide in application range. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic view of the double-beam multi-axis numerical control drilling device of the present application;

[0019] Figure 2Another angle structural schematic view of the double-beam multi-axis numerical control drilling device;

[0020] Figure 3 A side view of the double-beam multi-axis numerical control drilling device;

[0021] Figure 4 A mounting schematic view of a rack of the double-beam multi-axis numerical control drilling device;

[0022] Figure 5 A Figure 2 enlarged view of A part;

[0023] Figure 6 A Figure 3 enlarged view of B part;

[0024] Figure 7 A structure schematic view of a locking mechanism of the double-beam multi-axis numerical control drilling device;

[0025] Figure 8 Another angle structure schematic view of the locking mechanism of the double-beam multi-axis numerical control drilling device;

[0026] Figure 9 A sectional view of the locking mechanism of the double-beam multi-axis numerical control drilling device;

[0027] Figure 10 A sectional view of an oil circuit of the double-beam multi-axis numerical control drilling device;

[0028] Figure 11 A structure schematic view of a first valve core of the double-beam multi-axis numerical control drilling device;

[0029] Figure 12 A structure schematic view of a second valve core of the double-beam multi-axis numerical control drilling device;

[0030] Figure 13 A structure schematic view of a lock body of the double-beam multi-axis numerical control drilling device;

[0031] Figure 14 Another angle structure schematic view of the lock body of the double-beam multi-axis numerical control drilling device; DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below with reference to the drawings.

[0033] Referring to Figures 1-14 The present application provides a double-beam multi-axis numerical control drilling device, which comprises a machine base 1 and a cross beam frame slidably arranged on the machine base 1.

[0034] The machine base 1 is used as a support and mounting carrier for mounting other components, and is a cuboid structure as a whole, the lower end of which is fixed to the ground surface by anchor bolts, and a workbench 2 for placing a plate is arranged on the machine base 1, slide rails 11 and racks 12 are arranged on both sides of the workbench 2, the slide rails 11 are at least two and symmetrically arranged on both sides of the workbench 2 along the length direction of the machine base 1, and the racks are also two and symmetrically arranged on both sides of the workbench 2, and are arranged inward or outward on the racks 12; the cross beam frame is in the shape of a gantry, is slidably arranged on the slide rails 11, and can slide horizontally along the length direction of the slide rails 11, in the present application, the cross beam frame is two and is arranged back to back, a first mounting seat capable of realizing horizontal sliding and a horizontal driving mechanism for driving the first mounting seat to move horizontally are arranged on the cross beam frame 1, the sliding direction of the first mounting seat is perpendicular to the sliding direction of the cross beam frame, a second mounting seat is vertically slidably arranged on the first mounting seat, and a vertical driving mechanism for driving the second mounting seat to move up and down is arranged on the second mounting seat, the first driving mechanism and the second driving mechanism are both screw rod assemblies and can realize precise movement, and a plurality of electric drills 221 are equidistantly arranged on the lower end of the second mounting seat along the length direction of the machine base 1, so that the electric drills can realize movement in three directions (x, y, z), and the electric drills on the two cross beam frames are arranged back to back, i.e., are both arranged on the outer side.

[0035] The workbench is composed of a plurality of rectangular plates, and gaps are formed between adjacent two rectangular plates and form blanking grooves, a collecting groove is arranged at the lower end of the workbench, a plurality of vertical partitions are arranged in the collecting groove, the vertical partitions are parallel to the width direction of the workbench, the collecting groove is divided into a plurality of sub-collecting grooves with open upper ends by the vertical partitions, helical blades are arranged in the sub-collecting grooves, the helical blades form a helical conveying mechanism, an outer collecting groove is arranged at the output end of the sub-collecting groove, the length direction of the outer collecting groove is perpendicular to the length direction of the sub-collecting groove, a helical blade is also arranged in the outer collecting groove, and the helical blade also forms a helical conveying mechanism, and a storage groove is arranged at the output end of the outer collecting groove, which can realize automatic conveying and storage of waste residues generated in processing, and facilitates cleaning.

[0036] In the present application, a screw rod distance adjusting mechanism and a locking mechanism are arranged between the two cross beam frames, the screw rod distance adjusting mechanism is used for adjusting the distance between the two cross beam frames to meet different use requirements, and the locking mechanism is used for realizing fixed connection between the two cross beam frames to realize synchronous movement and drilling of the two cross beam frames, the screw rod distance adjusting mechanism and the locking mechanism are both two and are symmetrically arranged at the two ends of the cross beam frame, i.e., one screw rod distance adjusting mechanism and one locking mechanism are respectively arranged at the two ends of the cross beam frame.

[0037] The structure of the screw rod distance adjusting mechanism and the locking mechanism will be described in detail below.

[0038] For the convenience of description, one of the cross beam frames is taken as a first cross beam frame 21, and the other cross beam frame is taken as a second cross beam frame 22.

[0039] Referring to Figure 3 , the screw adjusting mechanism comprises a screw rod 61 and a screw sleeve 62, wherein the axis of the screw rod 61 is parallel to the length direction of the slide rail 11, an adjusting motor is arranged on the second cross beam frame, the adjusting motor is a servo motor or a stepping motor, and the screw rod 61 is installed at the output end of the adjusting motor; the screw sleeve 62 is fixedly installed on the first cross beam frame and is threadedly connected to the first screw rod, the first cross beam frame or the second cross beam frame can be made to approach or move away through the rotation of the screw rod, thereby realizing the distance adjustment between the two, and the screw rod and the screw sleeve are arranged on the back surface, i.e. the opposite surface, of the first cross beam frame and the second cross beam frame; the screw rod and the screw sleeve can also be a ball screw.

[0040] Referring to Figure 5 , Figures 7-12 , the locking mechanism comprises a guide rail 3 and a lock 4, the guide rail 3 is fixed on the first cross beam 21, in this embodiment, the guide rail 3 is fixed on the top of the first cross beam and is parallel to the sliding direction of the first cross beam frame 21 in the length direction, and the end thereof extends horizontally to the direction of the second cross beam frame; the lock 4 is fixed on the second cross beam frame 22, a guide hole is arranged on the lock 4, the guide rail 3 is sleeved in the guide hole and is in sliding fit, and a locking assembly is arranged on the lock, the locking assembly is rigidly connected with the guide rail 3 and is used for locking the guide rail 3, thereby realizing the fixed connection between the first cross beam frame and the second cross beam frame, and making the two realize synchronous movement.

[0041] Specifically, the lock 4 comprises a lock body 41, which is a cuboid structure as a whole, the lower end of the side wall of which extends horizontally and outwardly to form a connecting portion, a plurality of connecting holes are formed on the connecting portion for mounting and fixing, the lock body 41 is fixed on the second cross beam frame 22 by bolts, a sliding cavity 410 is formed in the lock body 41, a sliding plug 42 is slidably arranged in the sliding cavity 410, the sliding direction of the sliding plug is parallel to the length direction of the guide rail, the sliding plug 42 divides the sliding cavity 410 into two rod cavities, a sliding plug rod 421 is fixed on the sliding plug, both ends of the sliding plug rod 421 extend outwardly to the outside of the lock body 41 and serve as output ends, and the sliding plug rod 421 is fixedly connected with the guide rail 3; the two rod cavities are communicated through an oil path, a first valve core 51 and a second valve core 53 are arranged on the oil path, the first valve core 51 and the second valve core 53 are in parallel, that is, one is in a communication state when it is opened, the first valve core 51 and the second valve core 53 are normally closed valve cores, that is, the original (reset) state is closed to block the communication between the two rod cavities and realize locking, that is, at this time, the two rod cavities are in independent closed state, therefore, the sliding plug cannot slide, at this time, the first cross beam frame and the second cross beam frame are fixedly connected and the distance is fixed; an electromagnet 44 is arranged on the top surface of the lock body 41, the electromagnet 44 is connected with the first valve core 51 and is used to drive the first valve core to move to realize the communication or closing of the oil path, the second valve core is a manually operated valve core, when the electromagnet 44 is powered or the second valve core 53 is manually pressed, the two rod cavities are communicated, at this time, the sliding plug can slide, that is, the locking of the guide rail is released, at this time, the distance adjustment can be realized through the screw rod distance adjustment mechanism.

[0042] In the application, stepped holes are arranged at both ends of the sliding cavity, the stepped holes are coaxial with the sliding cavity, and the stepped holes form oil cavities 4101. An oil passage is connected between the two oil cavities. An end cover 46 is sealingly connected to the open end of the oil cavity through a bolt. A sliding plug hole is arranged in the end cover for accommodating a sliding plug rod. A sealing ring is arranged in the sliding plug hole. Specifically, the oil passage includes a first oil passage 411 and a second oil passage 419 which are respectively connected to the two oil cavities. A first oil port 410a is arranged in the side wall of one oil cavity, and the first oil passage is connected to the first oil port 410a. A second oil port 410b is arranged in the side wall of the oil cavity at the other end, and the second oil passage is connected to the second oil port 410b. The first oil passage 411 branches into a first branch 412 and a second branch 414. The second oil passage 419 branches into a third branch 418 and a fourth branch 416. A first valve core cavity 415 is arranged between the second branch 414 and the fourth branch 416. The second branch and the fourth branch are both connected to the first valve core cavity. Meanwhile, the second branch and the fourth branch are located on different radial surfaces of the first valve core cavity. A first valve core 51 is slidingly arranged in the first valve core cavity 415. Meanwhile, a first elastic member 52 is arranged at the lower end of the first valve core. The first elastic member 52 causes the first valve core 51 to have a tendency to move outward to block the connection between the second branch and the fourth branch. The first valve core is cylindrical. An annular groove is arranged in the side wall of the first valve core and forms an oil guide groove 510. Sealing rings are arranged at both ends of the oil guide groove. When the first valve core is located at the upper limit position, the oil guide groove 510 is located at the upper end of the second branch, that is, the second branch is not connected. A threaded hole is arranged at the top of the first valve core for connecting to the output end of an electromagnet. When the electromagnet pushes the first valve core to move downward, the oil guide groove connects the second branch and the fourth branch to realize the connection between the two oil cavities. A second valve core cavity 417 is arranged between the first branch 412 and the third branch 418. The first branch and the third branch are both connected to the second valve core cavity. Meanwhile, the first branch and the third branch are located on different radial surfaces of the second valve core cavity. A second valve core 53 is slidingly arranged in the second valve core cavity 417. Meanwhile, a second elastic member 54 is arranged at the lower end of the second valve core. The second elastic member 54 causes the second valve core 53 to have a tendency to move outward to block the connection between the first branch and the third branch. The second valve core is cylindrical. An annular groove is arranged in the side wall of the second valve core and forms an oil guide groove 530. Sealing rings are arranged at both ends of the oil guide groove 530. When the second valve core is located at the upper limit position, the oil guide groove 530 is located at the upper end of the first branch, that is, the first branch is not connected. When the second valve core is manually pressed to move downward, the oil guide groove connects the first branch and the third branch to realize the connection between the two oil cavities.A limiting seat 55 is threadedly connected to the open end of the first valve core cavity and the second valve core cavity, a first limiting surface downwardly arranged is arranged on the limiting seat, a second limiting surface upwardly arranged is arranged on the side wall of the first valve core or the second valve core, and the second limiting surface is in contact with the first limiting surface and realizes limiting, thereby controlling the upper limit of the valve core; meanwhile, a circlip 56 is arranged on the upper end of the limiting seat, the limiting seat is limited, vibration loosening is avoided, and use reliability is improved; the upper end of the second valve core 53 is formed with a pressing part for manual pressing operation to realize manual unlocking; in order to improve use safety and avoid accidental touch, the top surface (the pressing part) of the second valve core is flush with or lower than the top surface of the lock body 41, and a cover plate is arranged on the top surface of the second valve core cavity to realize further protection and avoid accidental touch.

[0043] In the embodiment, the slide cavities 410 are two and are arranged in parallel, independent pipelines (including branches and valve core cavities and valve cores) are arranged on the two slide cavities, in order to facilitate machining and production, the oil lines on the two slide cavities are arranged in central symmetry, and reference is made to Figure 10 .

[0044] The guide hole is located between the two slide cavities, and a connecting seat 43 is fixed to the end of the two slide rods, the connecting seat 43 is fixed to the upper surface of the guide rail 3 through bolts, the connecting seat includes two cylindrical mounting sleeves for sleeving the end of the slide rod, a connecting plate is arranged between the two mounting sleeves, the connecting plate is rigidly connected with the two mounting sleeves, the lower bottom surface of the connecting plate is a fitting surface 43a for fitting the upper surface of the guide rail, two mounting holes 430 are arranged on the fitting surface for fixed connection with the guide rail through bolts, and the connecting seat can be detachably replaced to adapt to different use requirements.

[0045] Reference is made to Figures 13-14 , in order to adapt to different cross-section guide rails, a strip-shaped mounting groove 400 is arranged on the bottom surface of the lock body 41 in the center, the mounting groove is parallel to the axis of the slide cavity along the length direction, and the cross section is rectangular or U-shaped, the two ends of the mounting groove 400 penetrate to the outside of the lock body 41, one or more limiting protrusions 4001 are arranged on the inner wall of the mounting groove 400, the limiting protrusions are strip-shaped and perpendicular to the length direction of the mounting groove, a slide block is detachably mounted in the mounting groove through bolts, the cross section of the slide block seat is the same as the cross section of the mounting groove and can be clamped into the mounting groove, limiting grooves for clamping the limiting protrusions are arranged on the side wall of the slide block, thereby realizing fixed mounting of the slide block, screw holes 4002 are arranged in the mounting groove, the slide block is fixedly mounted in the mounting groove through bolts, and the guide hole is arranged on the bottom surface of the slide block, which can be replaced according to different use requirements, thereby improving adaptability and universality.

[0046] The driving device is installed on the beam frame and is used for driving the horizontal movement of the beam frame, and the driving device comprises a driving motor and a driving gear 13 arranged on the output shaft of the driving motor, the driving gear 13 is engaged with the rack 12, and the teeth on the rack and the driving gear are helical teeth; in order to improve the operation and machining precision, in the embodiment, the driving device comprises a main driving device arranged on the first beam frame and a secondary driving device arranged on the second beam frame, the main driving device and the secondary driving device each comprise a driving motor and a driving gear, the rotation direction of the driving gear of the secondary driving device is opposite to that of the main driving device, and the output force of the secondary driving device is smaller than that of the main driving device, the secondary driving device forms a damping force, is used for eliminating the gap between the gear and the rack, avoids displacement deviation due to the existence of the gear gap during movement, and improves the overall operation reliability and stability during work (drilling) and distance adjustment.

[0047] The double-beam multi-axis numerical control drilling device is provided with two beam frames, greatly improving the drilling efficiency; the workbench can place and process large plates; the material collecting groove and the spiral conveying mechanism are arranged at the lower end of the workbench, so that the automatic conveying and storage of the falling materials can be realized, and the cleaning is facilitated; the distance adjusting mechanism is arranged on the two beam frames, the distance between the two beam frames can be adjusted, different use requirements can be met, the adjustment is convenient and labor-saving, and the adjustment precision is high; the locking mechanism is arranged, the two beam frames can be locked and fixed, relative slipping during movement is avoided, the operation stability is greatly improved, the distance adjusting mechanism is protected, and stress deformation is avoided; the sliding cavity and sliding plug mechanism are adopted, the structure is compact, the volume is small, the machining is convenient and low in cost, the locking can be realized at any position, the locking force is large, slipping does not occur, and the locking effect is good; the double sliding plug structure is adopted, the reliability and stability of the locking are improved, symmetrical force can be generated, the locking effect is good, double insurance is formed, and the safety is high; the double distance adjusting and double locking are arranged, the movement balance between the two beam frames is improved, and then the overall machining precision is improved; the electromagnet is arranged, automatic unlocking can be realized, the installation volume is small, the cost is low, the corresponding speed is fast, the operation is stable and reliable; the manual valve core is connected in parallel on the oil way of the oil cavity, the manual valve core can be pressed to realize the unlocking in special or emergency states, the operation is simple, and the safety is high; the top surface of the manual valve core is lower than the top surface of the lock body, the mistaken touch can be avoided, and the safety is improved; the detachable sliding block is arranged, the sliding block can be quickly detached and replaced according to different use requirements, the universality is high, and the use range is wide; the double-beam multi-axis numerical control drilling device has the advantages of compact structure, stable and reliable operation, high machining efficiency and good effect, and wide application range.

[0048] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the technical principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A dual beam multi-axis numerical control drilling apparatus, characterized by, The utility model relates to a double-beam drilling machine, comprising: a machine base as a support and mounting carrier, the machine base being provided with a worktable for placing a plate material, the worktable being provided with slide rails and a rack along the length direction on both sides; two horizontally sliding beam frames provided back to back, the beam frames being provided with drill bits, a screw distance adjusting mechanism for adjusting the distance between the beam frames and a locking mechanism for fixedly connecting the beam frames to achieve synchronous movement; a driving device mounted on the beam frames for driving the beam frames to move, comprising a driving motor and a driving gear provided on the output shaft of the driving motor and engaged with the rack; the locking mechanism comprising a guide rail and a lock, the guide rail being fixed on one of the beam frames and parallel to the sliding direction of the beam frame, the lock being fixed on the other beam frame, the lock being provided with a guide hole for the guide rail to pass through and a locking assembly for connecting with the guide rail and locking the guide rail; the lock comprising a lock body fixed on the beam frame by bolts, the lock body being formed with a sliding cavity, the sliding cavity being provided with a sliding plug, the sliding plug dividing the sliding cavity into two rod cavities, the sliding plug being provided with a sliding plug rod, the sliding plug rod extending axially to the outside of the lock body and being fixedly connected with the guide rail, the two rod cavities being connected by an oil passage, the oil passage being provided with a first valve core and a second valve core in parallel, the first valve core and the second valve core being normally closed valve cores to block the connection between the two rod cavities and achieve locking, the side wall of the lock body being provided with an electromagnet connected with the first valve core, when the electromagnet is powered on and / or the second valve core is manually pressed, the two rod cavities are connected and the locking is released.

2. The dual beam multi-axis CNC drilling apparatus as claimed in claim 1, wherein: both the screw distance adjusting mechanism and the locking mechanism are two and symmetrically arranged at the two ends of the beam frame.

3. The dual beam multi-axis CNC drilling apparatus of claim 1, wherein: the screw distance adjusting mechanism comprising a screw rod parallel to the length direction of the slide rail and a screw sleeve threadedly connected on the screw rod, the screw rod being mounted on an adjusting motor of one of the beam frames, the screw sleeve being fixedly mounted on the other beam frame.

4. The dual beam multi-axis CNC drilling apparatus of claim 1, wherein: the sliding cavities are two and arranged in parallel, both the sliding cavities being provided with independent pipelines, the guide hole being located between the two sliding cavities, the end of the sliding plug rod being fixed with a connecting seat, the connecting seat being fixed on the upper surface of the guide rail by bolts.

5. The dual beam multi-axis CNC drilling apparatus as claimed in claim 1, wherein: The both ends of the rod cavity are coaxially provided with stepped holes and form oil cavities, and the oil passage is connected between the two oil cavities; the oil passage comprises a first oil passage and a second oil passage which are communicated with the oil cavities respectively, the first oil passage is branched into a first branch and a second branch, the second oil passage is branched into a third branch and a fourth branch, a first valve core cavity is arranged between the second branch and the fourth branch, a first valve core and a first elastic component which has an outward movement tendency and blocks the communication between the second branch and the fourth branch are slidably arranged in the first valve core cavity; a second valve core cavity is arranged between the first branch and the third branch, a second valve core and a second elastic component which has an outward movement tendency and blocks the communication between the first branch and the fourth branch are slidably arranged in the second valve core cavity, and an end of the second valve core forms a pressing part for manual pressing.

6. The dual beam multi-axis CNC drilling apparatus of claim 1, wherein: The top surface of the second valve core is flush with or lower than the top surface of the lock body.

7. The dual beam multi-axis CNC drilling apparatus of claim 1, wherein: The bottom surface of the lock body is provided with a mounting groove in the length direction, the both ends of the mounting groove extend to the outside of the lock body, the inner wall of the mounting groove is provided with one or more limiting convex strips, a sliding block is detachably mounted in the mounting groove through bolts, and the guide hole is arranged in the bottom surface of the sliding block.

8. The dual-beam multi-axis CNC drilling apparatus of claim 1, wherein: The driving device comprises a main driving device arranged on one of the beam frames and a secondary driving device arranged on the other beam frame, the rotation direction of the secondary driving device is opposite to that of the main driving device, the output force of the secondary driving device is smaller than that of the main driving device and forms a damping force, and the main driving device and the secondary driving device act in working and distance adjustment.

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