阅读说明：本技术 一种具有多组合钻头的专用钻床及其工作方法 (Special drilling machine with multiple combined drill bits and working method thereof ) 是由 黄卫东 赖章鹏 郑建喜 洪浩 叶盛 于 2019-09-11 设计创作，主要内容包括：本发明涉及一种具有多组合钻头的专用钻床及其工作方法,包括底座,所述底座上侧设置有可前后移动并可转动的回转工作台,所述底座上安装有龙门架,所述龙门架的横梁上安装有可横向往复移动的多轴钻攻机构,所述多轴钻攻机构包括机座,所述机座上安装有至少一组的主轴组,每组主轴组具有至少两根沿横向间隔排列并可升降的主轴,所述主轴下端安装有用以装夹钻头或丝锥的夹头,每组主轴组配备一个用以驱动其主轴转动的交流电机,所述机座上还安装有与每根主轴一一对应的用以驱动主轴升降的第一伺服电机。该具有多组合钻头的专用钻床结构简单,设计合理,安装与维修便利,减少停机换刀的频率,使用方便,节约加工时间,大大提高加工效率和加工精度。(The invention relates to a special drilling machine with multiple combined drill bits and a working method thereof, and the special drilling machine comprises a base, wherein a rotary worktable which can move back and forth and rotate is arranged on the upper side of the base, a portal frame is arranged on the base, a multi-shaft drilling and tapping mechanism which can move transversely in a reciprocating manner is arranged on a beam of the portal frame, the multi-shaft drilling and tapping mechanism comprises a base, at least one group of spindle groups is arranged on the base, each group of spindle groups is provided with at least two spindles which are arranged at intervals in the transverse direction and can lift, the lower ends of the spindles are provided with chucks used for clamping drill bits or screw taps, each group of spindle groups is provided with an alternating current motor used for driving the spindles to rotate, and the base is also provided with first servo motors which are in one. This special drilling machine with multiunit closes drill bit simple structure, reasonable in design, the installation is convenient with the maintenance, reduces the frequency of shutting down the tool changing, and convenient to use practices thrift process time, improves machining efficiency and machining precision greatly.)

1. The utility model provides a special drilling machine with multiple combination drill bit which characterized in that: the base, the base upside is provided with but back-and-forth movement and rotatable rotary worktable, install the portal frame on the base, but install the multiaxis that lateral reciprocating moved on the crossbeam of portal frame and bore the mechanism of attacking, the multiaxis is bored and is included the frame, install at least a set of main shaft group on the frame, every main shaft group of group has two at least main shafts along horizontal interval arrangement and liftable, the chuck for clamping drill bit or screw tap is installed to the main shaft lower extreme, and every main shaft group of group is equipped with one and is used for driving its main shaft pivoted AC motor, still install on the frame with every main shaft one-to-one be used for driving the first servo motor that the main shaft goes up and down.

2. The specialized drill press having a multi-combination drill bit of claim 1, wherein: the upper half section of the main shaft is a spline shaft part, the spline shaft part of the main shaft is sleeved in a shaft sleeve and can slide up and down relative to the shaft sleeve, and a spline hole matched with the spline shaft part of the main shaft is formed in the shaft sleeve; the main shaft side is installed with rather than parallel first lead screw, the overcoat has rather than the rotatory complex sleeve on the main shaft, sleeve lateral part fixedly connected with first lead screw complex nut seat, first lead screw upper end with first servo motor's main shaft transmission is connected.

3. The specialized drill press having a multi-combination drill bit of claim 2, wherein: the alternating current motors are arranged at the end parts of the machine base, the shaft sleeves, closest to the upper ends of the main shafts of the corresponding alternating current motors, on each main shaft group are in transmission connection with the alternating current motors through variable-speed transmission mechanisms, and the shaft sleeves, at the upper ends of two adjacent main shafts on the same main shaft group, are in transmission connection through transmission belts.

4. The specialized drill press having a multi-combination drill bit of claim 3, wherein: the variable-speed transmission mechanism comprises a driving belt wheel arranged on a main shaft of the alternating-current motor, a driven belt wheel arranged on the shaft sleeve and a transmission belt connecting the driving belt wheel and the driven belt wheel; the driving belt wheel and the driven belt wheel are composed of a movable belt wheel disc and a fixed belt wheel disc, the distance between the movable belt wheel disc and the fixed belt wheel disc is variable, the movable belt wheel disc and the fixed belt wheel disc are matched to clamp the transmission belt, and one face of the movable belt wheel disc and one face of the fixed belt wheel disc opposite to each other are conical faces.

5. The specialized drill press with multi-combination drill bit of claim 4, wherein: the driving belt wheel is far away from alternating current motor one side and is installed the step motor that is used for driving the movable pulley dish of driving belt wheel and reciprocates, coaxial connection has the second lead screw on step motor's the main shaft, and driving belt wheel's movable pulley dish is towards step motor one end fixedly connected with connecting plate, set up on the connecting plate with second lead screw complex screw hole, the guide arm rather than parallel is installed to second lead screw side, set up on the connecting plate with guide arm sliding fit's guiding hole.

6. The specialized drill press having a multi-combination drill bit of claim 5, wherein: the movable belt wheel disc of the driven belt wheel is positioned on the upper side of the fixed belt wheel disc, a photoelectric encoder used for sensing the rotating speed of the shaft sleeve is installed at the upper end of the shaft sleeve, and a spring used for downwards pushing the movable belt wheel disc is further sleeved on the shaft sleeve and positioned above the movable belt wheel disc of the driven belt wheel.

7. the specialized drill press having a multi-combination drill bit of claim 1, wherein: the machine base is provided with two groups of spindle groups and two alternating current motors which are respectively used for driving the two groups of spindle groups, the two alternating current motors are respectively arranged at the left end and the right end of the machine base, the lower end of a spindle of one group of spindle groups is provided with a drill bit, the lower end of a spindle of the other group of spindle groups is provided with a screw tap, and all spindles on the two groups of spindle groups are arranged in a horizontal line.

8. The specialized drilling machine with multi-combination drill bit as claimed in claim 1 or 7, wherein: a second servo motor for driving the base to transversely move is mounted at the end part of the cross beam of the portal frame, the second servo motor drives the base to transversely move through a screw rod nut mechanism, and a transverse guide rail for transversely moving and guiding the base is mounted on the cross beam of the portal frame; the base is provided with a third servo motor used for driving the rotary worktable to move back and forth, the third servo motor drives the rotary worktable to move back and forth through a screw rod nut mechanism, and the base is provided with a longitudinal guide rail used for guiding the rotary worktable to move back and forth.

9. A method for operating a special drilling machine having a multi-combination drill according to claim 1, wherein: according to the diameter of a hole to be processed on a workpiece, tools with different diameters to be used are clamped on a main shaft of a multi-shaft drilling and tapping mechanism; clamping a workpiece on a rotary worktable, and then moving the rotary worktable to a specified position along the longitudinal direction and rotating the rotary worktable to a specified angle; when a cutter on a certain main shaft needs to be machined, an alternating current motor corresponding to a main shaft group where the main shaft is located drives all main shafts of the main shaft group to rotate, and a first servo motor corresponding to the main shaft drives the main shaft to move downwards to complete machining of a hole; through the longitudinal movement and the rotation of the rotary worktable and the transverse movement of the multi-shaft drilling and tapping mechanism, different cutters can be selected to process holes at different positions on a workpiece.

Technical Field

The invention relates to a special drilling machine with a multi-combination drill bit and a working method thereof.

Background

In the mechanical industry, parts produced in single or small batches also occupy a large proportion, and due to the ever-increasing competitive market atmosphere, the disadvantages of conventional machine tools are revealed for each enterprise to be able to survive in such environments with the ever-changing demands of the market. For example, in the processing of the hole and the screw thread of the dial in the textile equipment, the traditional single-shaft drilling machine is adopted, so that the cutter needs to be frequently replaced according to the size of the screw thread of the hole diameter on the dial, and therefore, the existing drilling machine equipment has the following problems in the processing of the dial of the textile equipment: (1) the machining efficiency and the machining precision are low, the machining time is wasted due to frequent tool changing, corresponding machining tools are installed according to the current machining requirement, and the tools are changed after one working procedure is completed to carry out the next machining working procedure, so that the traditional drilling machine is low in machining efficiency and easily causes unqualified machining quality; (2) the automation degree is low, the labor intensity is increased by artificially changing the tools, and the method is not in accordance with the modern production concept; (3) the structure is complicated, and the maintenance and the operation are inconvenient.

Nowadays, special combined drilling machines provide various parts for various industries, and can meet the requirements of drilling, reaming, tapping and the like.

Disclosure of Invention

In view of this, the invention aims to provide a special drilling machine with a multi-combination drill bit and a working method thereof, wherein the special drilling machine is simple in structure, convenient to use and high in machining efficiency.

The invention is realized by adopting the following scheme: the utility model provides a special drilling machine with multiunit closes drill bit, includes the base, the base upside is provided with but back-and-forth movement and rotatable rotary worktable, install the portal frame on the base, but install the multiaxis brill that horizontal reciprocating motion was attacked on the crossbeam of portal frame and construct, the multiaxis is bored and is attacked the mechanism and is included the frame, install at least a set of main shaft group on the frame, every main shaft group of group has two at least main shafts of arranging and liftable along horizontal interval, the chuck for clamping drill bit or screw tap is installed to the main shaft lower extreme, and every main shaft group of group is equipped with one and is used for driving its main shaft pivoted AC motor, still install on the frame with every main shaft one-to-one be used for driving the first servo motor that the main.

Furthermore, the upper half section of the main shaft is a spline shaft part, the spline shaft part of the main shaft is sleeved in a shaft sleeve and can slide up and down relative to the shaft sleeve, and a spline hole matched with the spline shaft part of the main shaft is formed in the shaft sleeve; the main shaft side is installed with rather than parallel first lead screw, the overcoat has rather than the rotatory complex sleeve on the main shaft, sleeve lateral part fixedly connected with first lead screw complex nut seat, first lead screw upper end with first servo motor's main shaft transmission is connected.

Furthermore, the alternating current motors are arranged at the end part of the machine base, the shaft sleeves, closest to the upper ends of the main shafts of the corresponding alternating current motors, on each main shaft group are in transmission connection with the alternating current motors through variable-speed transmission mechanisms, and the shaft sleeves at the upper ends of two adjacent main shafts on the same main shaft group are in transmission connection through transmission belts.

further, the variable speed transmission mechanism comprises a driving belt wheel arranged on a main shaft of the alternating current motor, a driven belt wheel arranged on the shaft sleeve and a transmission belt connecting the driving belt wheel and the driven belt wheel; the driving belt wheel and the driven belt wheel are composed of a movable belt wheel disc and a fixed belt wheel disc, the distance between the movable belt wheel disc and the fixed belt wheel disc is variable, the movable belt wheel disc and the fixed belt wheel disc are matched to clamp the transmission belt, and one face of the movable belt wheel disc and one face of the fixed belt wheel disc opposite to each other are conical faces.

Further, the driving pulley is kept away from alternating current motor one side and is installed the step motor that the movable pulley dish that is used for driving the driving pulley reciprocated, coaxial connection has the second lead screw on step motor's the main shaft, and the movable pulley dish of driving pulley is towards step motor one end fixedly connected with connecting plate, set up on the connecting plate with second lead screw complex screw hole, the guide arm rather than parallel is installed to second lead screw side, set up on the connecting plate with guide arm sliding fit's guiding hole.

Furthermore, the movable belt wheel disc of the driven belt wheel is positioned on the upper side of the fixed belt wheel disc, a photoelectric encoder used for sensing the rotating speed of the shaft sleeve is installed at the upper end of the shaft sleeve, and a spring used for downwards pushing the movable belt wheel disc is sleeved on the movable belt wheel disc of the driven belt wheel.

furthermore, the machine base is provided with two groups of spindle groups and two alternating current motors which are respectively used for driving the two groups of spindle groups, the two alternating current motors are respectively installed at the left end and the right end of the machine base, a drill bit is installed at the lower end of a spindle of one group of spindle groups, a screw tap is installed at the lower end of a spindle of the other group of spindle groups, and all spindles on the two groups of spindle groups are arranged in a horizontal line.

Furthermore, a second servo motor for driving the base to transversely move is mounted at the end part of the beam of the portal frame, the second servo motor drives the base to transversely move through a screw rod nut mechanism, and a transverse guide rail for transversely moving and guiding the base is mounted on the beam of the portal frame; the base is provided with a third servo motor used for driving the rotary worktable to move back and forth, the third servo motor drives the rotary worktable to move back and forth through a screw rod nut mechanism, and the base is provided with a longitudinal guide rail used for guiding the rotary worktable to move back and forth.

The other technical scheme of the invention is as follows: according to the working method of the special drilling machine with the multi-combination drill bit, tools with different diameters to be used are clamped on a main shaft of a multi-shaft drilling and tapping mechanism according to the diameter of a hole to be machined in a workpiece; clamping a workpiece on a rotary worktable, and then moving the rotary worktable to a specified position along the longitudinal direction and rotating the rotary worktable to a specified angle; when a cutter on a certain main shaft needs to be machined, an alternating current motor corresponding to a main shaft group where the main shaft is located drives all main shafts of the main shaft group to rotate, and a first servo motor corresponding to the main shaft drives the main shaft to move downwards to complete machining of a hole; through the longitudinal movement and the rotation of the rotary worktable and the transverse movement of the multi-shaft drilling and tapping mechanism, different cutters can be selected to process holes at different positions on a workpiece.

Compared with the prior art, the invention has the following beneficial effects: the special drilling machine with the multi-combination drill bit has the advantages of simple structure, reasonable design, convenience in installation and maintenance, lower manufacturing cost, capability of realizing the integrated functions of machining and special attack of various apertures, reduction in the frequency of tool changing during shutdown, convenience in use, saving in machining time, great improvement in machining efficiency, capability of efficiently and accurately adjusting the rotating speed of the main shaft according to the machining requirements of workpieces and improvement in machining precision.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of a multi-axis drill tapping mechanism in an embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of a multi-axis drilling and tapping mechanism according to an embodiment of the present invention;

FIG. 4 is a perspective view of the variable transmission mechanism in an embodiment of the present invention;

FIG. 5 is a front elevational view of the variable transmission mechanism in an embodiment of the present invention;

FIG. 6 is a schematic view of the connection of the sleeve and the first lead screw according to the embodiment of the present invention;

FIG. 7 is a schematic view of the connection of the drive pulley and the driven pulley of the variable transmission mechanism in an embodiment of the present invention;

FIG. 8 is a perspective view of a collection trough in an embodiment of the present invention;

The reference numbers in the figures illustrate: 100-multi-shaft drilling and tapping mechanism, 110-main shaft, 111-spline shaft part, 112-drill bit, 113-screw tap, 120-alternating current motor, 130-first servo motor, 131-first screw rod, 140-shaft sleeve, 150-sleeve, 151-nut seat, 160-variable speed transmission mechanism, 161-transmission belt, 162-movable belt wheel disc and 163-fixed belt wheel disc, 164-step motor, 165-second screw rod, 166-connecting plate, 167-guide rod, 168-photoelectric encoder, 169-spring, 170-spindle seat, 180-machine seat, 200-base, 210-portal frame, 211-second servo motor, 300-rotary worktable, 400-collecting tank, 410-truckle and 420-cooling liquid pump.

Detailed Description

As shown in fig. 1 to 8, a special drilling machine with a multi-combination drill bit comprises a base 200, a rotary table 300 which can move back and forth and rotate is arranged on the upper side of the base 200, a fixture for clamping a workpiece is arranged on the rotary table, a portal frame 210 is arranged on the base 200, a multi-shaft drilling and tapping mechanism 100 which can move transversely and reciprocally is arranged on a beam of the portal frame, the multi-shaft drilling and tapping mechanism comprises a base 180, at least one group of spindle groups is arranged on the base, each group of spindle groups is provided with at least two spindles which are arranged at intervals transversely and can be lifted, a chuck for clamping a drill bit or a screw tap is arranged at the lower end of each spindle, each group of spindle groups is provided with an ac motor 120 for driving the spindle to rotate, the base 180 is further provided with first servo motors 130 which correspond to each spindle one by one and are used for driving, the number of the main shaft groups can be set according to needs, the general number of the groups is 1-3, and the groups can be transversely arranged or longitudinally arranged; by arranging the plurality of main shafts, drill bits or screw taps with different diameters can be arranged on the main shafts, so that hole site machining with different diameters can be completed; the special drilling machine is particularly suitable for hole site machining on rotary workpieces, and can be quickly and accurately positioned to the position of a hole to be machined through rotation of the rotary worktable and transverse movement of the multi-shaft drilling and tapping mechanism.

In this embodiment, because the requirement of the drill bit and the screw tap on the rotation speed is different during operation, in order to enable the drilling machine to have the functions of drilling and tapping at the same time and not to need to change the tool halfway, the base 180 is provided with two sets of spindle groups and two alternating current motors for driving the two sets of spindle groups respectively, the two alternating current motors are respectively installed at the left end and the right end of the base, the drill bit is installed at the lower end of the spindle of one set of spindle groups, the number of spindles is 3, the screw tap is installed at the lower end of the spindle of the other set of spindle groups, the number of spindles is 2, and all the spindles on the two sets of spindle groups are arranged in a row.

in this embodiment, the upper half section of the main shaft 110 is a spline shaft portion 111, the spline shaft portion of the main shaft 110 is sleeved in a shaft sleeve 140 and can slide up and down relative to the shaft sleeve, and a spline hole matched with the spline shaft portion of the main shaft is formed in the shaft sleeve 140; a first lead screw 131 parallel to the main shaft 110 is mounted beside the main shaft 110, a sleeve 150 rotationally matched with the main shaft is sleeved on the main shaft, the sleeve and the main shaft do not move axially relative to each other, a nut seat 151 matched with the first lead screw is fixedly connected to the side of the sleeve 150, the sleeve 150 and the first lead screw 131 are both mounted in a main shaft seat 170, the sleeve can slide up and down relative to the main shaft seat, the main shaft seat is mounted on the lower side of a machine base 180, the upper end of the first lead screw 131 is in transmission connection with the main shaft of the first servo motor 130 through a transmission belt, belt pulleys are mounted on the main shaft of the first servo motor and the upper end of the first lead screw, and when a certain main shaft needs to be processed, the first servo motor 130 corresponding to the main shaft drives the sleeve to move downwards through the first lead screw 131, so as to drive the main shaft to; because the upper end of the main shaft is matched with the spline hole of the shaft sleeve through the spline shaft part, the power transmission can be ensured when the main shaft moves up and down.

In this embodiment, the ac motor 120 is installed at the end of the base 180, the shaft sleeve 140 of the upper end of the spindle 110 closest to the corresponding ac motor in each spindle group is in transmission connection with the ac motor through the variable speed transmission mechanism 160, the shaft sleeves of the upper ends of two adjacent spindles in the same spindle group are in transmission connection through the transmission belt, and a belt pulley for installing the transmission belt is installed on each shaft sleeve of the upper end of each spindle.

In this embodiment, the variable speed transmission mechanism 160 includes a driving pulley mounted on the main shaft of the ac motor, a driven pulley mounted on the sleeve, and a transmission belt 161 connecting the driving pulley and the driven pulley; the driving belt wheel and the driven belt wheel are both composed of a movable belt wheel disc 162 and a fixed belt wheel disc 163 with variable space for matching and clamping the transmission belt, the opposite surfaces of the movable belt wheel disc 162 and the fixed belt wheel disc 163 are conical surfaces, because the movable pulley disc 162 and the fixed pulley disc 163 clamp one side of the transmission belt as a conical surface, therefore, when the distance between the movable pulley disc 162 and the fixed pulley disc 163 becomes smaller, the position where the movable pulley disc 162 and the fixed pulley disc 163 clamp the transmission belt will expand outward, so that the diameter of the arc-shaped portion of the transmission belt will become larger, otherwise, when the distance between the movable pulley disc 162 and the fixed pulley disc 163 becomes larger, the position where the movable pulley disc 162 and the fixed pulley disc 163 clamp the transmission belt is inwardly contracted, so that the diameter of the arc-shaped part of the transmission belt becomes smaller, thus, by controlling the spacing between the movable pulley sheave 162 and the fixed pulley sheave 163, adjustment of the transmission ratio can be achieved; because the circumference of the transmission belt is fixed, the distance between the movable belt wheel disc of the driving belt wheel and the fixed belt wheel disc and the distance between the movable belt wheel disc of the driven belt wheel and the fixed belt wheel disc are working modes with the same length, namely when the distance between the movable belt wheel disc of the driving belt wheel and the fixed belt wheel disc becomes smaller, the distance between the movable belt wheel disc of the driven belt wheel and the fixed belt wheel disc becomes larger correspondingly, and the transmission ratio becomes larger; when the distance between the movable belt wheel disc of the driving belt wheel and the movable belt wheel disc of the fixing belt wheel disc becomes large, the distance between the movable belt wheel disc of the driven belt wheel and the movable belt wheel disc of the fixing belt wheel correspondingly becomes small, and the transmission ratio becomes small.

In this embodiment, the fixed pulley disc of the driving pulley and the main shaft of the ac motor rotate synchronously and have a fixed axial position, the movable pulley disc of the driving pulley also rotates synchronously with the main shaft of the ac motor and has an adjustable axial position, a step motor 164 for driving the movable pulley disc of the driving pulley to move up and down is installed on one side of the driving pulley away from the ac motor 120, a second lead screw 165 is coaxially connected to the main shaft of the step motor 164, a connecting plate 166 is fixedly connected to one end of the movable pulley disc of the driving pulley facing the step motor, a threaded hole matched with the second lead screw is formed in the connecting plate, a guide rod 167 parallel to the second lead screw is installed beside the second lead screw, and a guide hole in sliding fit with the guide rod is formed in the connecting plate; the movable pulley disc of the driving pulley is driven by the stepping motor 164 to move up and down, so that the distance between the movable pulley disc and the fixed pulley disc can be adjusted.

In this embodiment, the main shaft end of the ac motor 120 is disposed upward, the stepping motor 164 is located above the driving pulley of the variable speed transmission mechanism 160, the movable pulley disc of the driving pulley is located on the upper side of the fixed pulley disc, the upper end of the movable pulley disc has a sleeve body extending upward, the connecting plate is fixedly connected to the upper end of the sleeve body, and the second lead screw extends into the sleeve body; in the specific implementation, the main shaft end of the ac motor 120 may be disposed downward, the movable pulley disc of the driving pulley is located at the lower side of the fixed pulley disc, and the stepping motor 164 is located below the driving pulley of the variable speed transmission mechanism 160.

in this embodiment, the movable pulley disc of the driven pulley is located on the upper side of the fixed pulley disc, the upper end of the shaft sleeve is provided with a photoelectric encoder 168 for sensing the rotating speed of the shaft sleeve, and the rotating speed of the main shaft can be detected in real time through the photoelectric encoder; the shaft sleeve is also externally sleeved with a spring 169 (not shown in figure 4) which is positioned above the movable pulley disc of the driven pulley and used for pushing the movable pulley disc downwards, the spring 169 has the function of not only automatically adjusting the tightness of the transmission belt, but also realizing the self-adaptive adjustment of the distance between the movable pulley disc of the driven pulley and the fixed pulley disc, and under the matching action of the spring pressing force and the expansion force of the transmission belt, when the distance between the movable pulley disc of the driving pulley and the fixed pulley disc becomes larger or smaller, the distance between the movable pulley disc of the driven pulley and the fixed pulley disc becomes smaller or larger along with the distance, so that the diameters of arc sections at two ends of the transmission belt are changed, the adjustment of the transmission ratio is further completed, and the stepless speed change is realized.

In this embodiment, a second servo motor 211 for driving the base to move laterally is mounted at an end of a beam of the gantry, the second servo motor 211 drives the base to move laterally through a lead screw and nut mechanism, and a lateral guide rail (not shown in the figure) for guiding the base to move laterally is mounted on the beam of the gantry; a third servo motor (not shown in the figure) for driving the rotary worktable to move back and forth is arranged on the base, the third servo motor drives the rotary worktable to move back and forth through a screw rod and nut mechanism, and a longitudinal guide rail (not shown in the figure) for guiding the rotary worktable to move back and forth is arranged on the base; the specific structure of the rotary table belongs to the prior art, and is not specifically described herein.

In this embodiment, set up the chip removal leakage fluid dram that is located the rotary worktable below on the base, the base below is provided with the collecting vat 400 that is located the chip removal leakage fluid dram under, and truckle 410 is installed to the collecting vat bottom, still install coolant pump 420 on the collecting vat, this drilling machine adds the metal fillings that produce and falls into the collecting vat through the chip removal leakage fluid dram in man-hour, adds the coolant liquid that uses simultaneously and also flows in the collecting vat through the chip removal leakage fluid dram to realize recycling through the coolant pump, get into the coolant pump again after the isolated metal fillings of filter screen in the collecting vat.

the multi-shaft drilling and tapping mechanism is simple in structure, convenient to install and maintain and low in cost, can achieve the function of integrating various hole diameters and special tapping, and improves efficiency. The alternating current motor in the multi-shaft drilling and tapping mechanism and the corresponding main shaft realize stepless speed change in a belt transmission connection mode, and the rotating speed of the main shaft can be efficiently and accurately adjusted according to the machining requirement of a workpiece.

According to the working method of the special drilling machine with the multi-combination drill bit, tools (namely drill bits or screw taps) with different diameter specifications to be used are clamped on a main shaft of a multi-shaft drilling and tapping mechanism according to the diameter of a hole to be machined in a workpiece; clamping a workpiece on a rotary worktable, and then moving the rotary worktable to a specified position along the longitudinal direction and rotating the rotary worktable to a specified angle; when a cutter on a certain main shaft needs to be machined, an alternating current motor corresponding to a main shaft group where the main shaft is located drives all main shafts of the main shaft group to rotate, and a first servo motor corresponding to the main shaft drives the main shaft to move downwards to complete machining of a hole; different cutters can be selected to process holes at different positions on a workpiece through longitudinal movement and rotation of the rotary worktable and transverse movement of the multi-shaft drilling and tapping mechanism; in the processing process, the processing is carried out in the order of the main shaft groups, namely, the processing of all the cutters on the same main shaft group is firstly completed, and then the cutter is switched to the next main shaft group, so that the efficiency can be improved, and the electric energy can be effectively saved.

any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.