CN211708177U - Bench drill with replaceable drill bit - Google Patents

Bench drill with replaceable drill bit Download PDF

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Publication number
CN211708177U
CN211708177U CN201922140043.0U CN201922140043U CN211708177U CN 211708177 U CN211708177 U CN 211708177U CN 201922140043 U CN201922140043 U CN 201922140043U CN 211708177 U CN211708177 U CN 211708177U
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CN
China
Prior art keywords
rotary
drill
drill bit
carousel
bench
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Active
Application number
CN201922140043.0U
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Chinese (zh)
Inventor
宋晓芳
蔡高参
杨金林
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Zhejiang University of Technology ZJUT
Zhejiang Sci Tech University ZSTU
Zhejiang University of Science and Technology ZUST
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Zhejiang University of Technology ZJUT
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Priority to CN201922140043.0U priority Critical patent/CN211708177U/en
Application granted granted Critical
Publication of CN211708177U publication Critical patent/CN211708177U/en
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Abstract

A bench drill with a replaceable drill bit comprises a bench drill body, a rack sleeve, a main shaft and a drill bit replacing mechanism, wherein the bench drill body comprises a base, an upright post and a bench drill head, the bench drill base is installed on the upright post, the main shaft is installed on the bench drill head, and the main shaft is connected with a driving motor and is perpendicular to the bench drill base; the rack sleeve is sleeved outside the main shaft and is fixedly arranged on the head part of the bench drill, meanwhile, the lower end of the main shaft extends out of the rack sleeve, and a vertically arranged rack structure is arranged on the outer wall of the rack sleeve; the gear is meshed with the rack structure on the rack sleeve; when the drill bit needs to be replaced, the rocker is rocked to enable the whole drill bit replacing mechanism to descend, the rotary table is rotated, and after a suitable drill bit is selected, the rocker is rocked reversely to enable the whole drill bit replacing mechanism to ascend and reset. The utility model provides a stabilize bench drill of high-efficient removable drill bit.

Description

Bench drill with replaceable drill bit
Technical Field
The utility model belongs to the technical field of machining equipment technique and specifically relates to a bench drill of removable drill bit is related to.
Background
The bench drill is a device with small volume and is used in the technical field of machining. The bench drill is only provided with a drill bit and used for drilling specific holes, when other different holes need to be drilled, the drill bit needs to be replaced, the process is often complicated, and the drilling efficiency is reduced.
Disclosure of Invention
In order to solve the problem that the drill bit needs to be frequently changed and the drilling efficiency is lower in the existing bench drill, the utility model provides a bench drill of stable high-efficient removable drill bit.
The utility model provides a technical scheme that its technical problem adopted is:
a bench drill with a replaceable drill bit comprises a bench drill body, a rack sleeve, a main shaft and a drill bit replacing mechanism, wherein the bench drill body comprises a base, an upright post and a bench drill head, the bench drill base is installed on the upright post, the main shaft is installed on the bench drill head, and the main shaft is connected with a driving motor and is perpendicular to the bench drill base; the rack sleeve is sleeved outside the main shaft and is fixedly arranged on the head part of the bench drill, meanwhile, the lower end of the main shaft extends out of the rack sleeve, and a vertically arranged rack structure is arranged on the outer wall of the rack sleeve;
the drill bit replacing mechanism comprises a rotary table clamping mechanism, a rotary table lifting mechanism, a rotary table device and a rotary table supporting structure, the middle part of the rotary table clamping mechanism is arranged outside the rack sleeve in a vertically sliding mode, the rotary table lifting mechanism is arranged at the left upper part of the rotary table clamping mechanism, the rotary table device is arranged at the right part of the rotary table clamping mechanism, and the rotary table supporting structure is used for supporting the rotary table device and is arranged at the left lower part of the rotary table clamping mechanism;
the turntable lifting mechanism comprises a first fixing nut, a rocker, a fixing shaft and a gear, the rocker is sleeved on the fixing shaft in a sleeving manner, the first fixing nut is fixedly connected to the tail end of the fixing shaft, the gear is fixedly connected to the fixing shaft, and the fixing shaft is rotatably arranged on the turntable clamping mechanism; the gear is meshed with the rack structure on the rack sleeve;
the rotary table device comprises a rotary table central shaft, drill bit connecting pieces and a rotary table, wherein the rotary table is provided with a rotary table central hole and more than two drill bit connecting holes, the rotary table central shaft is arranged at the rotary table central hole and is rotatably arranged on a rotary table clamping mechanism, the more than two drill bit connecting holes are arranged around the periphery of the rotary table central hole, the number of the drill bit connecting pieces is the same as that of the drill bit connecting holes and are arranged at the drill bit connecting holes through bearings, a flat groove used for being connected with the lower end of the main shaft is arranged on the upper end face of each drill bit connecting piece, and a drill bit is detachably arranged;
when the drill bit needs to be replaced, the rocker is rocked to enable the whole drill bit replacing mechanism to descend, the rotary table is rotated, and after a suitable drill bit is selected, the rocker is rocked reversely to enable the whole drill bit replacing mechanism to ascend and reset.
Furthermore, the surface of the rotary table is conical, the number of the drill bit connecting holes is three, the drill bit connecting holes are 120 degrees apart, the number of the drill bit connecting pieces is three, and the upper end of each drill bit connecting piece inclines towards the central hole of the rotary table and is arranged in the drill bit connecting hole.
Still further, carousel fixture includes carousel centre gripping support, carousel bearing structure dead lever and carousel center pin mounting, the carousel centre gripping support is the type of falling U, is equipped with the fretwork on its horizontal pole for installation carousel elevating system and rack sleeve, bolted connection is passed through in the left lower extreme of carousel centre gripping support in the left end of carousel bearing structure dead lever, bolted connection is passed through in the right lower extreme of carousel centre gripping support in the right-hand member of carousel center pin mounting, and its left end is equipped with and is used for the suit at the epaxial axle sleeve of carousel center, carousel center pin mounting is higher than carousel bearing structure dead lever.
Still further, bench drill still includes instrument strorage device, and instrument strorage device is the rectangular form, and the centre is equipped with the round hole of installing with the stand cooperation, and both sides symmetric distribution is equipped with four respectively and puts the thing hole.
Still further, carousel bearing structure includes second fixation nut, half thread screw rod, bearing support and bearing, the upper end of half thread screw rod is connected in the right-hand member of carousel bearing structure dead lever through second fixation nut, bearing support sets up on the lower extreme of half thread screw rod, the bearing install on bearing support's lower extreme, and with bearing support's extension board forms a slot, and this slot is used for cooperating with the carousel.
Furthermore, three steel ball holes are uniformly distributed on the central shaft of the rotary table along the circumferential direction, a steel ball is arranged in each steel ball hole, the steel ball is mounted in each steel ball hole through a spring, a groove is formed in the inner wall of the shaft sleeve, one steel ball is clamped in the groove by rotating the central shaft of the rotary table, and the rotation and the positioning of the central shaft of the rotary table and the shaft sleeve are realized.
The beneficial effects of the utility model are that: the consistency of the rotation of the main shaft of the bench drill and the central shaft of the rotary table is ensured, and the drill bit is always vertical to the pedestal of the bench drill, so that the normal work of the bench drill is ensured;
the steel balls in the central shaft of the rotary table are buckled with the shaft sleeve on the fixing part of the central shaft of the rotary table, so that a drill bit can be replaced when the rotary table rotates once; by adopting the turntable supporting structure and the rolling bearing, the load born by the turntable can be reduced, and the flexibility and the stability of the rotation of the turntable are improved; can choose for use three kinds of required drill bits according to actual need, this utility model can realize the nimble conversion of three kinds of drill bits in the use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the bit exchange mechanism.
Fig. 3 is a schematic structural diagram of the turntable elevating mechanism.
Fig. 4 is a schematic structural view of the turntable clamping mechanism.
Fig. 5 is a schematic structural view of the turntable device.
Fig. 6 is a schematic structural view of the turntable support structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 6, a bench drill with a replaceable drill bit includes a bench drill body 100, a tool storage device 200, a rack sleeve 500, a spindle 600, and a drill bit replacing mechanism, where the bench drill body 100 includes a base, an upright, and a bench drill head, a bench drill base is mounted on the upright, a spindle is mounted on the bench drill head, and the spindle is connected with a driving motor and perpendicular to the bench drill base; the rack sleeve 500 is sleeved outside the main shaft 600 and is fixedly installed on the head of the bench drill, meanwhile, the lower end of the main shaft 600 extends out of the rack sleeve 500, and a vertically arranged rack structure is arranged on the outer wall of the rack sleeve 500; the drill bit replacing mechanism comprises a turntable lifting mechanism 300, a turntable clamping mechanism 400, a turntable device 700 and a turntable supporting structure 800.
The tool storage device 200 is in the shape of a long strip, a round hole in the middle is matched with an upright post of the bench drill body, two sides of the tool storage device are symmetrically distributed, and four object placing holes are formed in each tool storage device.
As shown in fig. 3, the turntable lifting mechanism 300 includes a first fixing nut 301, a rocker 302, a fixing shaft 303, and a gear 304. The rocker is sleeved outside the fixed shaft, the first fixed nut 301 is fixedly connected with the tail end of the fixed shaft 303, in order to restrict the range of motion of the rocker 302, the gear 304 is fixedly connected to the fixed shaft 303, the upper cross bar of the turntable clamping support 401 is provided with a fixed shaft mounting hole, the fixed shaft is rotatably mounted on the fixed shaft mounting hole, one side of the fixed shaft mounting hole is provided with a positioning hole, the fixed shaft 303 is clamped in the positioning hole through a pin 305, the positioning of the fixed shaft 303 is realized, the specific working process is, when the drill bit is replaced, the pin 305 on the fixed shaft 303 is removed from the positioning hole by pulling the fixed shaft 303 outward, then, the rocker 302 is rotated to drive the gear 304 to rotate, so as to realize the lifting function, and after the drill bit is replaced, and then the pin 305 is clamped in the positioning hole by pushing the fixing shaft 303 inwards to realize the positioning of the fixing shaft 303, and the gear 304 is meshed with the rack structure on the rack sleeve 500.
As shown in fig. 4, the turntable clamping mechanism 400 includes a turntable clamping bracket 401, a turntable support structure fixing rod 402, and a turntable central shaft fixing member 404. The appearance of carousel fixture 400 is right trapezoid, and goes up the horizontal pole fretwork for installation carousel elevating system 300 and rack sleeve 500, the left end of carousel bearing structure dead lever 402 passes through bolt 403 to be connected in the left lower extreme of carousel centre gripping support 401, the right-hand member of carousel center pin mounting 404 passes through bolted connection in the right lower extreme of carousel centre gripping support 401, and its left end is equipped with and is used for the axle sleeve of suit on carousel center pin 701, and the joint is realized with the axle sleeve to the steel ball, carousel center pin mounting 404 is higher than carousel bearing structure dead lever 402.
As shown in fig. 5, the rotary table apparatus 700 includes a rotary table center shaft 701, a bit connector 703, and a rotary table 704. The surface of the rotary table 704 is conical, and is provided with three drill bit connecting holes and a rotary table central hole, wherein the drill bit connecting holes are all separated by 120 degrees; the turntable central shaft 701 is connected with a turntable central hole, three steel balls 702 are contained in the turntable central shaft 701, each 120-degree steel ball 702 is arranged in each steel ball hole, each steel ball is installed in each steel ball hole through a spring, a groove is formed in the inner wall of the shaft sleeve, one steel ball is clamped in the groove by rotating the turntable central shaft 701, and rotation and positioning of the turntable central shaft and the shaft sleeve are achieved. The bit connecting member 703 is connected to a bit connecting hole through a bearing. The upper end of the main shaft 600 is connected with the bench drill body 100, the lower end of the main shaft is connected with the flat groove on the upper end surface of the drill connecting piece 703, and a drill is detachably mounted on the lower end of each drill connecting piece.
As shown in fig. 6, the turntable support structure 800 includes a second fixing nut 801, a half-thread screw 802, a bearing support 803, and a bearing 804. The half-thread screw 802 is connected to the right end of the turntable supporting structure fixing rod 402 through a second fixing nut 801, the bearing support 803 is arranged at the lower end of the half-thread screw 802, the bearing 804 is installed at the lower end of the bearing support 803, a groove is formed by the bearing 804 and a support plate of the bearing support 803, the groove is used for being matched with the turntable 704, the use of the bearing can reduce the load born by the turntable, and the flexibility and the stability of the rotation of the turntable are improved.
The utility model discloses a use method: before the mechanism is used, three drill bits required to be used can be replaced manually; when the drill bit needs to be replaced in the using process, the rocker 302 is rocked to enable the whole drill bit replacing mechanism to descend, the turntable 304 is rotated, and after a proper drill bit is selected, the whole mechanism ascends through the turntable lifting mechanism 200, namely the rocker 302 is rocked reversely; tools needed by replacing the drill bit can be placed in the tool storage device, so that the operation of replacing the drill bit is facilitated.
The utility model discloses a change of drill bit has wholly improved the stability and the flexibility of bench drill, has improved machining's efficiency, but wide application in the machining field of making.
The above only is the preferred embodiment of the present invention, which does not limit the scope of the present invention, and the structure of the present invention, which is directly or indirectly applied to other related technical fields, is also included in the scope of the present invention.

Claims (6)

1. A bench drill of removable drill bit which characterized in that: the bench drill comprises a bench drill body, a rack sleeve, a main shaft and a drill bit replacing mechanism, wherein the bench drill body comprises a base, an upright post and a bench drill head, the bench drill base is arranged on the upright post, the main shaft is arranged on the bench drill head, and the main shaft is connected with a driving motor and is vertical to the bench drill base; the rack sleeve is sleeved outside the main shaft and is fixedly arranged on the head part of the bench drill, meanwhile, the lower end of the main shaft extends out of the rack sleeve, and a vertically arranged rack structure is arranged on the outer wall of the rack sleeve;
the drill bit replacing mechanism comprises a rotary table clamping mechanism, a rotary table lifting mechanism, a rotary table device and a rotary table supporting structure, the middle part of the rotary table clamping mechanism is arranged outside the rack sleeve in a vertically sliding mode, the rotary table lifting mechanism is arranged at the left upper part of the rotary table clamping mechanism, the rotary table device is arranged at the right part of the rotary table clamping mechanism, and the rotary table supporting structure is used for supporting the rotary table device and is arranged at the left lower part of the rotary table clamping mechanism;
the turntable lifting mechanism comprises a first fixing nut, a rocker, a fixing shaft and a gear, the rocker is sleeved on the fixing shaft in a sleeving manner, the first fixing nut is fixedly connected to the tail end of the fixing shaft, the gear is fixedly connected to the fixing shaft, and the fixing shaft is rotatably arranged on the turntable clamping mechanism; the gear is meshed with the rack structure on the rack sleeve;
the rotary table device comprises a rotary table central shaft, drill bit connecting pieces and a rotary table, wherein a rotary table central hole and more than two drill bit connecting holes are formed in the rotary table, the rotary table central shaft is arranged at the position of the rotary table central hole and rotatably arranged on a rotary table clamping mechanism, the drill bit connecting holes are arranged around the rotary table central hole in a circumferential direction, the number of the drill bit connecting pieces is the same as that of the drill bit connecting holes, the drill bit connecting holes are arranged at the position of the drill bit connecting holes through bearings, flat grooves used for being connected with the lower end of a main shaft are formed in the upper end face of each drill bit connecting piece.
2. A replaceable bit bench drill as defined in claim 1, wherein: the surface of the rotary table is conical, the number of the drill bit connecting holes is three, the three drill bit connecting holes are 120 degrees apart, the number of the drill bit connecting pieces is three, and the upper end of each drill bit connecting piece inclines towards the central hole of the rotary table and is arranged in the drill bit connecting hole.
3. A replaceable bit table drill according to claim 1 or 2, wherein: carousel fixture includes carousel centre gripping support, carousel bearing structure dead lever and carousel center pin mounting, the carousel centre gripping support is the type of falling U, is equipped with the fretwork on its horizontal pole for installation carousel elevating system and rack sleeve, the left end of carousel bearing structure dead lever passes through bolted connection in the left lower extreme of carousel centre gripping support, the right-hand member of carousel center pin mounting passes through bolted connection in the right lower extreme of carousel centre gripping support, and its left end is equipped with and is used for the suit at the epaxial axle sleeve of carousel center, carousel center pin mounting is higher than carousel bearing structure dead lever.
4. A replaceable bit table drill according to claim 1 or 2, wherein: the bench drill also comprises a tool storage device, the tool storage device is in a strip shape, a round hole matched with the upright post is arranged in the middle of the tool storage device, the two sides of the tool storage device are symmetrically distributed, and four object placing holes are respectively arranged on the tool storage device.
5. The replaceable bit bench drill of claim 4, wherein: the turntable supporting structure comprises a second fixing nut, a half-thread screw rod, a bearing support and a bearing, the upper end of the half-thread screw rod is connected to the right end of the turntable supporting structure fixing rod through the second fixing nut, the bearing support is arranged at the lower end of the half-thread screw rod, the bearing is installed at the lower end of the bearing support and forms a groove with a support plate of the bearing support, and the groove is used for being matched with the turntable.
6. The replaceable bit bench drill of claim 4, wherein: three steel ball holes are uniformly distributed on the central shaft of the rotary table along the circumferential direction, a steel ball is arranged in each steel ball hole, the steel ball is mounted in each steel ball hole through a spring, a groove is formed in the inner wall of the shaft sleeve, one steel ball is clamped in the groove by rotating the central shaft of the rotary table, and the rotation and the positioning of the central shaft of the rotary table and the shaft sleeve are realized.
CN201922140043.0U 2019-12-04 2019-12-04 Bench drill with replaceable drill bit Active CN211708177U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922140043.0U CN211708177U (en) 2019-12-04 2019-12-04 Bench drill with replaceable drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922140043.0U CN211708177U (en) 2019-12-04 2019-12-04 Bench drill with replaceable drill bit

Publications (1)

Publication Number Publication Date
CN211708177U true CN211708177U (en) 2020-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922140043.0U Active CN211708177U (en) 2019-12-04 2019-12-04 Bench drill with replaceable drill bit

Country Status (1)

Country Link
CN (1) CN211708177U (en)

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