CN210756341U - Multi-combination drill bit structure - Google Patents

Abstract

The utility model relates to a multiunit closes drill bit structure, the test platform comprises a support, install at least a set of main shaft group on the frame, every group main shaft 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 group main shaft 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 servo motor that the main shaft goes up and down. The utility model discloses multiunit closes the drill bit structure, simple structure, the installation is convenient with the maintenance, and the cost is lower, adopts multiaxis integrated configuration, can realize multiple aperture processing and attack integrative function specially, raises the efficiency, and alternating current motor realizes infinitely variable with the belt drive connected mode with corresponding the main shaft, can be high-efficient accurate adjust main shaft rotational speed according to the work piece processing demand.

Description

Multi-combination drill bit structure

Technical Field

The utility model relates to a multiunit closes drill bit structure.

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.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a multiunit combination drill bit structure that simple structure, convenient to use, machining efficiency is high.

The utility model discloses a following scheme realizes: the utility model provides a multiunit closes drill bit structure, includes 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 that is used 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 servo motor that the main shaft goes up and down.

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 is provided with a first screw rod parallel to the main shaft, the main shaft is sleeved with a sleeve in rotating fit with the main shaft, the side part of the sleeve is fixedly connected with a nut seat matched with the first screw rod, and the upper end of the first screw rod is in transmission connection with a main shaft of the servo motor.

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.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses multiunit closes the drill bit structure, simple structure, the installation is convenient with the maintenance, and the cost is lower, adopts multiaxis integrated configuration, can realize multiple aperture processing and attack integrative function specially, raises the efficiency, and alternating current motor realizes infinitely variable with the belt drive connected mode with corresponding the main shaft, can be high-efficient accurate adjust main shaft rotational speed according to the work piece processing demand.

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 related drawings.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the embodiment of the present invention;

FIG. 3 is a perspective view of a variable speed drive according to an embodiment of the present invention;

FIG. 4 is an elevation view of a variable speed drive mechanism in an embodiment of the present invention;

FIG. 5 is a schematic view of the connection between the sleeve and the first lead screw according to the embodiment of the present invention;

FIG. 6 is a schematic view of the connection of the driving pulley and the driven pulley of the variable speed drive according to an embodiment of the present invention;

the reference numbers in the figures illustrate: 100-multi-combination drill bit, 110-spindle, 111-spline shaft part, 112-drill bit, 113-screw tap, 120-alternating current motor, 130-servo motor, 131-first screw rod, 140-shaft sleeve, 150-sleeve, 151-nut seat, 160-variable speed transmission mechanism, 161-transmission belt, 162-movable pulley disc, 163-fixed pulley disc, 164-stepping motor, 165-second screw rod, 166-connecting plate, 167-guide rod, 168-photoelectric encoder, 169-spring, 170-spindle seat and 180-machine seat.

Detailed Description

As shown in fig. 1 to 6, a multi-combination drill structure includes a base 180, at least one group of spindle groups is mounted on the base, each group of spindle groups has at least two spindles arranged at intervals in a transverse direction and capable of ascending and descending, a chuck for clamping a drill or a screw tap is mounted at a lower end of each spindle, each group of spindle groups is equipped with an ac motor 120 for driving the spindle to rotate, the base 180 is further equipped with servo motors 130 corresponding to each spindle one by one for driving the spindle to ascend and descend, the number of the spindle groups can be set as required, the general number of the spindle groups is 1 to 3, and the positions between the groups can be arranged in a transverse direction or in a longitudinal direction; 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 utility model discloses a multiunit closes drill bit and applies to the drilling machine, and lateral shifting through frame 180 can required cutter remove to the work piece position of will processing directly over.

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 screw rod 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 cannot move axially relative to each other, a nut seat 151 matched with the first screw rod is fixedly connected to the side of the sleeve 150, the sleeve 150 and the first screw rod 131 are both mounted in a main shaft seat 170, the sleeve can slide up and down relative to the main shaft seat, and the main shaft seat is mounted on the lower side of a machine seat 180; the upper end of the first screw rod 131 is in transmission connection with the main shaft of the servo motor 130 through a transmission belt, belt pulleys are mounted on the main shaft of the servo motor and the upper end of the first screw rod, when a certain main shaft needs to be machined, the servo motor 130 corresponding to the main shaft drives the sleeve to move downwards through the first screw rod 131, and therefore the main shaft is driven to move downwards to complete hole site machining; 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 is provided with 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.

The utility model discloses multiunit closes the drill bit structure, simple structure, the installation is convenient with the maintenance, and the cost is lower, adopts multiaxis integrated configuration, can realize multiple aperture processing and attack integrative function specially, raises the efficiency, and alternating current motor realizes infinitely variable with the belt drive connected mode with corresponding the main shaft, can be high-efficient accurate adjust main shaft rotational speed according to the work piece processing demand.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: 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, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (7)

1. A multi-combination drill bit structure is characterized in that: the automatic drilling machine comprises a 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 that is used 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 the servo motor who is used for driving the main shaft lift with every main shaft one-to-one on the frame.

2. The multi-combination drill bit structure 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 is provided with a first screw rod parallel to the main shaft, the main shaft is sleeved with a sleeve in rotating fit with the main shaft, the side part of the sleeve is fixedly connected with a nut seat matched with the first screw rod, and the upper end of the first screw rod is in transmission connection with a main shaft of the servo motor.

3. The multi-combination drill bit structure 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 multi-combination drill bit structure 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 multi-combination drill bit structure 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 multi-combination drill bit structure 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 multi-combination drill bit structure 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.

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