A kind of hilted broadsword copper bar tapping equipment of multi-gear transmission
Technical field
The present invention relates to a kind of hilted broadsword copper bar tapping equipments of multi-gear transmission.
Background technology
Copper bar have many advantages, such as resistivity it is low, can bending degree it is big.By above-mentioned advantage, copper bar is often used as conduction material
Material is applied in high voltage power distributing cabinet, plays the role of that component and component in high voltage power distributing cabinet is connected, it is contemplated that make copper bar
For conductive material, it is necessary to corresponding insulation measures are carried out, thus often to fill one layer of insulating materials on copper bar, insulating materials
Insulating materials has just covered the connecting hole at the both ends of copper bar script (connecting hole opened up on copper bar is used as by tight after loading onto
Firmware achievees the purpose that connect with other components in high voltage power distributing cabinet, assemble), thus need to remove the connection at copper bar both ends
Insulating materials on hole need to carry out copper bar trepanning operation so that the connecting hole of script exposes on copper bar.Existing copper bar
Trepanning operation either manufactures enterprise, it is desired nonetheless in relevant electric appliance manufacturing enterprise, be all made of and pass through in related copper bar
The insulating materials for the connection hole for going to copper bar both ends is cut with cutter, there are following inevitable defect, misoperation injures
The hand of operator, firmly the zinc coat of heterogeneous distortion copper bar, cuts other ground of the irregular destruction copper bar of excessive or cutting
The insulating materials of side cuts the very few connecting hole that cannot expose script on copper bar;In addition, encounter the connecting hole at copper bar both ends
Aperture more as a child, is not easy to implement to cut operation;Encounter the connecting hole at copper bar both ends aperture it is larger when, implement cut operation
It is again relatively time consuming laborious.
Invention content
The technical problem to be solved by the present invention is to provide a kind of hilted broadsword copper bar tapping equipment of multi-gear transmission, trepanning is made
Industry will not hurt the hand of operating personnel, avoid firmly uneven the case where causing to damage the zinc coat of copper bar, will not destroy copper bar its
His insulating materials in the localities, adapts to the different copper bars in connecting hole aperture.
In order to solve the above technical problems, technical solution provided by the invention is:A kind of hilted broadsword copper bar of multi-gear transmission is opened
Hole equipment, including set up bearing support on the table comprising fixed seat, the first level bearing for being placed in fixed seat side
Block, the second horizontal supporting block for being placed in the fixed seat other side, the first vertical supporting leg being connected with first level rest pad and with
The second connected vertical supporting leg of second horizontal supporting block;The lower end of rack mounting base, the upper end and fixed seat is rotatably connected;
The first rack with boring cutter, one end are provided with the trepanning cutter mechanism towards the bottom of bearing support, and the other end is from rack
The side level of mounting base is penetrated along straight path;The second rack with ball, one end are provided with the bottom towards bearing support
The rotatable ball ball in portion, the other end are penetrated from the other side level of rack mounting base along straight path;And transmission group
Part, the transmission component include the cogged main shaft in both ends, with shaft driven gear, with shaft driving gear and
Rotational handle, the main shaft, driven gear and driving gear are located in the rack mounting base;The gear of described main shaft one end,
The tooth engagement of the tooth on its one side and first rack with boring cutter, the tooth of another side with it is described with ball second
The tooth engagement of rack;The gear of the main shaft other end is engaged with driven gear, and the driven gear is engaged with driving gear, institute
Stating one end of rotational handle can penetrate in the rack mounting base and be connected with the shaft of driving gear from top to down, described in rotation
Rotational handle sequentially drives driving gear, driven gear and main axis, the main axis to may make trepanning cutter mechanism and rolling
Spacing between pearl expands or reduces, and the aperture segment in trepanning cutter mechanism is in same level height with ball.
Further, one end of first rack with boring cutter has install the trepanning cutter mechanism first
Fixing body, the trepanning cutter mechanism include the first adjusting screw rod, the first compression spring, boring cutter, the first fixed plate and several first
Fastening bolt;The upper end of the boring cutter is installation end, and lower end is trepanning end;First fixed plate is equipped with up and down
For the straight slot that the trepanning end of the boring cutter passes through, after the trepanning end of the boring cutter passes vertically through first fixed plate,
First fixed plate by the first fastening bolt be connected to first fixing body bottom and make the trepanning of boring cutter
It holds towards the bottom of bearing support;Be formed on the installation end of the boring cutter with comparable first heavy platform of the diameter of the first compression spring,
First fixing body is equipped with the first through hole for running through first fixing body up and down;First compression spring is vertically loaded into described
In first through hole, lower end is against in first heavy platform, and the upper end of the first through hole has internal thread, and described first is adjusted
The lower end of screw rod is screwed into the upper end of the first through hole and is against the upper end of first compression spring;The lower end of the first through hole
Peripheral wall be equipped at least one the first locating slot extended along the axis direction of first through hole, outside the installation end of the boring cutter
It is protruding with the first convex block, the installation end of the boring cutter is fitted into the first convex block of its in first through hole and coordinates with first locating slot
It is circumferentially rotated with limiting boring cutter.
Further, one end of second rack with ball has the second fixing body, the hilted broadsword copper bar trepanning
Equipment further includes the second adjusting screw rod, the second compression spring, the second fixed plate, several second fastening bolts, the rotatable rolling of installation
It the positioning column of pearl and is spirally connected fixed positioning seat with the upper end of positioning column;The positioning column is equipped with along its axis direction
The accommodating chamber of distribution, the ball is fitted into the accommodating chamber and makes outside the exposed lower end to positioning column of ball of part, described
The lower end of positioning seat is screwed into the positioning column until touched with the ball, second fixed plate be equipped with up and down with
For the straight slot that the lower end of the positioning column passes through, after the lower end of the positioning column passes vertically through second fixed plate, described
Two fixed plates are connected to the bottom of second fixing body by the second fastening bolt, wherein the positioning seat upper end
Size is more than the size of straight slot to prevent positioning seat from shaking off from straight slot;Second fixing body is equipped with up and down through described
The upper end of second through-hole of the second fixing body, the positioning seat is fitted into second through-hole, the upper end shape of the positioning seat
Comparable second heavy platform of diameter of the second compression springs of Cheng Youyu, second compression spring are vertically loaded into second through-hole, lower end
It is against in second heavy platform, the upper end of second through-hole has internal thread, and the lower end of second adjusting screw rod is screwed into institute
State in the upper end of the second through-hole and be against the upper end of second compression spring;The peripheral wall of the lower end of second through-hole is equipped at least one
The second locating slot that item extends along the axis direction of the second through-hole, has the second of evagination on the peripheral wall of the upper end of the positioning seat
The upper end of convex block, positioning seat in the second through-hole and makes its second convex block coordinate to limit positioning seat with second locating slot
It circumferentially rotates.
Further, the tooth position of first rack with boring cutter is in its side and towards the front end of bearing support, institute
The tooth position of the second rack with ball is stated in its side and towards the rear end of bearing support;Or it is described with boring cutter first
The tooth position of rack is in its side and towards the rear end of bearing support, and the tooth position of second rack with ball is in its side and court
To the front end of bearing support.
Further, the rack mounting base includes upper mounting seat and lower mounting seat, the upper mounting seat and lower mounting seat
It is spirally connected fixation by several first bolts and the second bolt;First rack with boring cutter has along its length direction
There is the first fluting, one end of several first bolts penetrates from lower mounting seat and passes through first fluting and upper mounting seat
It is spirally connected, wherein the diameter of first bolt is slightly less than the groove width with the first fluting;Second rack with ball along
Its length direction has the second fluting, and one end of several second bolts penetrates from lower mounting seat and passes through described second to open
Slot is spirally connected with upper mounting seat, wherein the diameter of first bolt is slightly less than the groove width with the second fluting.
Further, first level rest pad is an integral structure with the first vertical supporting leg, the second horizontal supporting block with
Second vertical supporting leg is an integral structure.
Further, the copper bar tapping equipment further includes the actuating unit for being used as the rotation of drive rack mounting base, described
Actuating unit includes motor, driving shaft and servo axis, and output shaft, driving shaft and the servo axis three of the motor are coaxially disposed,
The output shaft of the motor is connected with the upper end of driving shaft, and the lower end of the driving shaft is connected with the upper end of servo axis, it is described with
The lower end of moving axis is connected with the upper end of rack mounting base, and the output shaft of the motor is rotated to promote rack mounting base to rotate.
Further, the shaft of the shaft coaxial line of the servo axis and driving gear, the driving gear is set in hollow
It sets, positioning ray emitter is installed in the servo axis, the ray that the positioning ray emitter is sent out passes vertically through actively
The hollow part of the shaft of gear is simultaneously pierced by outside the rack mounting base, and the center of circle in the hole of the copper bar of trepanning is waited for as positioning.
Further, the driving shaft is in hollow setting, and the promising positioning of hollow part installation of the driving shaft is penetrated
The power module of line transmitter power supply, the power module are electrically connected with positioning ray emitter.
Further, the lower end of the rotational handle and the removable connection of the shaft of driving gear, the rotational handle
Upper end is in bending-like.
It designs, has the advantages that compared with prior art following using the above structure:Trepanning operation will not hurt operating personnel
Hand, avoid firmly uneven the case where causing to damage the zinc coat of copper bar, will not destroy copper bar elsewhere on insulating materials,
Adapt to the different copper bars in connecting hole aperture.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the embodiment of the present invention one.
Fig. 2 is the plane overall structure diagram of the embodiment of the present invention one.
Fig. 3 is the direction view of Fig. 2A-A.
Fig. 4 is the direction view of Fig. 2 B-B.
Fig. 5 is the direction view of Fig. 2 C-C.
Fig. 6 is quick-fried according to figure under one visual angle of part A of Fig. 2.
Fig. 7 is quick-fried according to figure under one visual angle of part B of Fig. 2.
Fig. 8 is quick-fried according to figure under another visual angle of the part A of Fig. 2.
Fig. 9 is quick-fried according to figure under another visual angle of the part B of Fig. 2.
Figure 10 is the plane overall structure diagram of the embodiment of the present invention two.
Figure 11 is the planar structure schematic diagram of the part A of Figure 10.
Figure 12 is that the rack mounting base of the present invention is assembled together with the first rack with boring cutter and the second rack
Overall structure diagram.
Figure 13 is the explosive view of Figure 12.
As shown in the figure:1, case;2, fixed seat;311, first level rest pad;312, the second horizontal supporting block;411,
One vertical supporting leg;412, the second vertical supporting leg;5, rack mounting base;511, upper mounting seat;512, lower mounting seat;611, band
There is the first rack of boring cutter;612, the second rack with ball;711, main shaft;712, driven gear;713, driving gear;
811, the first fixing body;812, the second fixing body;911, the first adjusting screw rod;912, the second adjusting screw rod;1011, the first pressure
Spring;1012, the second compression spring;1111, boring cutter;1112, ball;1211, the first fixed plate;1212, the second fixed plate;1311、
First fastening bolt;1312, the second fastening bolt;1411, the first heavy platform;1412, the second heavy platform;1511, first through hole;
1512, the second through-hole;1611, the first locating slot;1612, the second locating slot;1711, the first convex block;1712, the second convex block;18、
Rotational handle;1911, the first fluting;1912, the second fluting;2011, the first bolt;2012, the second bolt;21, motor;22、
Driving shaft;23, servo axis;24, ray emitter is positioned;25, power module;26, engraved structure;2711, positioning column;2712、
Positioning seat.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings.
Embodiment one
The present invention discloses a kind of hilted broadsword copper bar tapping equipment of multi-gear transmission, referring to Fig.1-Fig. 9 and Figure 12 and figure
13,
Including setting up bearing support 1 on the table comprising fixed seat 2, the first level branch for being placed in 2 side of fixed seat
Supporting block 311, the second horizontal supporting block 312 for being placed in 2 other side of fixed seat, be connected with first level rest pad 311 it is first perpendicular
Straight supporting leg 411 and the second vertical supporting leg 412 being connected with the second horizontal supporting block 312;
Rack mounting base 5, the upper end and the lower end of fixed seat 2 are rotatably connected;
The first rack 611 with boring cutter, one end are provided with the trepanning cutter mechanism towards the bottom of bearing support 1,
The other end is penetrated from the side level of rack mounting base 5 along straight path;
The second rack 612 with ball, one end are provided with the rotatable ball 1112 towards the bottom of bearing support 1
Ball 1112, the other end are penetrated from the other side level of rack mounting base 5 along straight path;
And transmission component, transmission component include the cogged main shaft 711 in both ends, the driven gear 712 with shaft has
The driving gear 713 and rotational handle 18 of shaft, main shaft 711, driven gear 712 and driving gear 713 are located at rack installation
In seat 5;The gear of 711 one end of main shaft, the tooth engagement of the tooth on one side and the first rack 611 with boring cutter, another side
Tooth with ball the second rack 612 tooth engagement;The gear of 711 other end of main shaft is engaged with driven gear 712, driven
Gear 712 is engaged with driving gear 713, one end of rotational handle 18 can penetrate from top to down in rack mounting base 5 and with actively
The shaft of gear 713 is connected, and rotates rotational handle 18, sequentially drives 711 turns of driving gear 713, driven gear 712 and main shaft
Dynamic, main shaft 711, which rotates, may make the spacing between trepanning cutter mechanism and ball 1112 to expand or reduce, opening in trepanning cutter mechanism
Bore portion is in same level height with ball 1112.
Wherein, trepanning cutter mechanism is circumferentially rotated to complete trepanning operation with rack mounting base 5, rotates rotational handle 18,
Sequentially driving gear 713, driven gear 712 and main shaft 711 is driven to rotate, the rotation of main shaft 711 may make trepanning cutter mechanism and rolling
Spacing between pearl 1112 expands or reduces, and to adapt to the different copper bar of open pore size, that is, realizes that the pore size of trepanning is adjustable,
The different copper bars in connecting hole aperture are adapted to.
Copper bar trepanning operation relies on entire copper bar tapping equipment, can implement trepanning operation, thus hurts operator
The hand of member.
Copper bar trepanning operation relies on trepanning cutter mechanism as rack mounting base 5 is circumferentially rotated to complete trepanning operation, no
The case where there are discontinuity avoids the case where trepanning operation damages the zinc coat of copper bar.
Spacing between trepanning cutter mechanism and ball 1112 is adjustable to adapt to wait for the aperture on the copper bar of trepanning, is not present
It is cut more, very few cutting or cut irregular situation, because without destruction copper bar elsewhere on insulating materials feelings
Condition, there is no cannot expose the connecting hole of script on copper bar.
It waits in the specific implementation, as further embodiment, one end of the first rack 611 with boring cutter has installation
First fixing body 811 of trepanning cutter mechanism, the first rack 611 with boring cutter is including horizontal strip shape body and is set to horizontal bar
The cylindric or soil block cloddy of the end of shape body one end is formed on the side of horizontal strip shape body continuously distributed with main shaft 711
The tooth of the gear engagement of one end, cylindric or square soil block cloddy constitute the first fixing body 811, i.e. the first fixing body 811
For cylindrical-shaped structure body or square soil block cloddy, wherein horizontal strip shape body is an integral structure with the first fixing body 811.
It is a kind of specific trepanning cutter mechanism as follows, on the one hand, there is setting for longitudinal buffering using the trepanning cutter mechanism
It sets, the trepanning operation that can alleviate rigidity to a certain extent and rigidly crash avoids causing to damage to copper bar;On the other hand,
By the cooperation of dependency structure, in trepanning operation, avoids the boring cutter of trepanning cutter mechanism from circumferentially rotating, avoid boring cutter
The boring cutter of mechanism circumferentially rotates the case where causing to be unable to trepanning;Finally, in the case where ensureing that there is above-mentioned function,
The structure of entire trepanning cutter mechanism is by a relatively simple, and the assembly process being assembled together with the first fixing body 811 is also more simple
It is single.
Trepanning cutter mechanism includes the first adjusting screw rod 911, the first compression spring 1011, boring cutter 1111, the first fixed plate 1211
With several the first fastening bolts 1311;The upper end of boring cutter 1111 is installation end, and lower end is trepanning end;First fixed plate
1211 are equipped with up and down for the straight slot that the trepanning end of boring cutter 1111 passes through, and the trepanning end of boring cutter 1111 passes vertically through
After first fixed plate 1211, the first fixed plate 1211 is connected to the first fixing body 811 by the first fastening bolt 1311
Bottom simultaneously makes the trepanning end of boring cutter 1111 towards the bottom of bearing support 1;It is formed on the installation end of boring cutter 1111 and first
Comparable first heavy platform 1411 of diameter of compression spring 1011, the first fixing body 811 are equipped with up and down through the of the first fixing body 811
One through-hole 1511;First compression spring 1011 is vertically loaded into first through hole 1511, and lower end is against in the first heavy platform 1411, and first is logical
There is internal thread, the lower end of the first adjusting screw rod 911 to be screwed into the upper end of first through hole 1511 and be against for the upper end in hole 1511
The upper end of one compression spring 1011;The peripheral wall of the lower end of first through hole 1511 is equipped at least one axis side along first through hole 1511
To the first locating slot 1611 of extension, the installation end of boring cutter 1111 is protruded with the first convex block 1711, the peace of boring cutter 1111
Dress end is fitted into its first convex block 1711 and the first locating slot 1611 in first through hole 1511 and coordinates to limit boring cutter 1111 circumferentially
Rotation.
It waits in the specific implementation, as further embodiment, the second rack 612 with ball plays the work of auxiliary trepanning
With whole equipment only needs to put into the trepanning cutter mechanism of a set of trepanning, is convenient for the maintenance in equipment later stage.Second with ball
One end of rack 612 has the second fixing body 812, and hilted broadsword copper bar tapping equipment further includes the second adjusting screw rod 912, the second compression spring
1012, the second fixed plate 1212, several second fastening bolts 1312, the positioning column 2711 for installing rotatable ball 1112
And it is spirally connected fixed positioning seat 2712 with the upper end of positioning column 2711;Positioning column 2711 is equipped with to be distributed along its axis direction
Accommodating chamber, ball 1112 is fitted into accommodating chamber and keeps part ball 1112 exposed to outside the lower end of positioning column 2711, positions
The lower end of seat 2712 is screwed into positioning column 2711 until touched with ball 1112, the second fixed plate 1212 be equipped with up and down with
For the straight slot that the lower end of positioning column 2711 passes through, after the lower end of positioning column 2711 passes vertically through the second fixed plate 1212, second is solid
Fixed board 1212 is connected to the bottom of the second fixing body 812 by the second fastening bolt 1312, wherein 2712 upper end of positioning seat
Size be more than straight slot size to prevent positioning seat 2712 from shaking off from straight slot;Second fixing body 812 is equipped with and passes through up and down
The second through-hole 1512 of the second fixing body 812 is worn, the upper end of positioning seat 2712 is fitted into the second through-hole 1512, positioning seat 2712
Upper end be formed with comparable second heavy platform 1412 of the diameter of the second compression spring 1012, it is logical that the second compression spring 1012 is vertically loaded into second
In hole 1512, lower end is against in the second heavy platform 1412, and the upper end of the second through-hole 1512 has internal thread, the second adjusting screw rod
912 lower end is screwed into the upper end of the second through-hole 1512 and is against the upper end of the second compression spring 1012;The lower end of second through-hole 1512
Peripheral wall be equipped at least one along the second through-hole 1512 axis direction extend the second locating slot 1612, positioning seat 2712
Have the second convex block 1712 of evagination on the peripheral wall of upper end, the upper end of positioning seat 2712 in the second through-hole 1512 and make its second
Convex block 1712 coordinates with the second locating slot 1612 to be circumferentially rotated with limiting positioning seat 2712.
It waits in the specific implementation, as further embodiment, the tooth position of the first rack 611 with boring cutter is in its side
And towards the front end of bearing support 1, the tooth position of the second rack 612 with ball is in its side and towards the rear end of bearing support 1;Or
The tooth position of first rack 611 of the person with boring cutter carries the second rack of ball in its side and towards the rear end of bearing support 1
612 tooth position is in its side and towards the front end of bearing support 1.
It waits in the specific implementation, as further embodiment, rack mounting base 5 includes upper mounting seat 511 and lower mounting seat
512, upper mounting seat 511 and lower mounting seat 512 are spirally connected fixation by several first bolts 2011 and the second bolt 2012;It carries
First rack 611 of boring cutter has the first fluting 1911 along its length direction, one end of several the first bolts 2011 from
Lower mounting seat 512 is penetrated and is spirally connected with upper mounting seat 511 across the first fluting 1911, wherein the diameter of the first bolt 2011 omits
Less than the groove width with the first fluting 1911;The second rack 612 with ball has the second fluting 1912 along its length direction,
One end of several the second bolts 2012 penetrates from lower mounting seat 512 and is spirally connected with upper mounting seat 511 across the second fluting 1912,
Wherein, the diameter of the first bolt 2011 is slightly less than the groove width with the second fluting 1912.
Wherein, the first fluting 1911 is set on the horizontal strip shape body of the first rack 611 with boring cutter;Second fluting
1912 are set on the horizontal strip shape body of the second rack 612 with ball.
It is a kind of actuating unit of specific copper bar tapping equipment as follows, waits in the specific implementation, as further side
Case, copper bar tapping equipment further include the actuating unit for being used as drive rack mounting base 5 and rotating, and actuating unit includes motor 21, master
Moving axis 22 and servo axis 23, output shaft, driving shaft 22 and 23 three of the servo axis coaxial arrangement of motor 21, the output shaft of motor 21
It is connected with the upper end of driving shaft 22, the lower end of driving shaft 22 is connected with the upper end of servo axis 23, the lower end of servo axis 23 and rack
The upper end of mounting base 5 is connected, and the output shaft of motor 21 is rotated to promote rack mounting base 5 to rotate.
It, could be complete due to waiting for that it is suitable with the spacing between ball 1112 and boring cutter 1111 that the aperture of trepanning is needed on copper bar
At accurate trepanning operation, using concrete measure below, the positioning of the through hole heart rotates rotational handle 18, sequentially drives
Driving gear 713, driven gear 712 and main shaft 711 rotate, the rotation of main shaft 711 may make trepanning cutter mechanism and ball 1112 it
Between spacing expand or reduce, between quickly achieving between the aperture for waiting for trepanning on copper bar and ball 1112 and boring cutter 1111
Away from comparable purpose.The shaft of the shaft coaxial line of servo axis 23 and driving gear 713, driving gear 713 is in hollow setting, with
Positioning ray emitter 24 is installed, the ray that positioning ray emitter 24 is sent out passes vertically through driving gear 713 in moving axis 23
Shaft hollow part and be pierced by outside rack mounting base 5, the hole heart in the hole of the copper bar of trepanning is waited for as positioning, driving shaft 22 is in
The hollow part of hollow setting, driving shaft 22 is installed by the power module 25 that promising positioning ray emitter 24 is powered, power module
25 are electrically connected with positioning ray emitter 24.
It waits in the specific implementation, the lower end of rotational handle 18 and the removable connection of shaft of driving gear 713, rotational handle
18 upper end is in bending-like.
Spacing between trepanning cutter mechanism and ball 1112 specifically refers to, the low spot of the boring cutter 1111 of trepanning cutter mechanism with
The distance between the low spot of ball 1112.The distance is represented with d in fig. 2, meanwhile, the boring cutter 1111 of trepanning cutter mechanism
The low spot of low spot and ball 1112 is in same level.
Embodiment two
Referring to Figure 10 and Figure 11, whole equipment installs second rack 612 with ball of the structure as embodiment one additional
With ball 1112, whole equipment installs structure and the first rack 611 and boring cutter with boring cutter involved by embodiment one additional
Mechanism is the present embodiment and embodiment as follows there are the first rack 611 and trepanning cutter mechanism with boring cutter of part variation
The first rack 611 with boring cutter and trepanning cutter mechanism in one have differences the specific expansion of part-structure.
One end of the first rack 611 with boring cutter has the first fixing body 811 of mounting opening cutter mechanism, carries
First rack 611 of boring cutter includes the cylindric or blocky knot of horizontal strip shape body and the end set on horizontal strip shape body one end
Structure body forms the tooth that the continuously distributed gear with 713 one end of main shaft engages, cylindric or square on the side of horizontal strip shape body
Soil block cloddy constitute the first fixing body 811, i.e. the second fixing body 811 be cylindrical-shaped structure body or square soil block cloddy,
Wherein, horizontal strip shape body is an integral structure with the first fixing body 811, and trepanning cutter mechanism includes boring cutter, boring cutter 1111
Upper end is installation end, and lower end is trepanning end, and there is the installation end of boring cutter 1111 symmetrically arranged mounting ear, mounting ear to be adjacent to
After being connected and fixed in the bottom of the first fixing body 811 and by trip bolt, the trepanning end of boring cutter 1111 downward, i.e., towards branch
It is responsible for trepanning operation in the bottom of bolster 1.
In the present embodiment, the first rack 611 with boring cutter and the efficiency of assembling between trepanning cutter mechanism are faster than reality
Apply the first rack 611 with boring cutter in example one and the efficiency of assembling between trepanning cutter mechanism.
In above each specific embodiment, it is arranged on first level rest pad 311 and the second horizontal supporting block 312 and engraves
The upper end of hollow structure 26, the second adjusting screw rod of upper end 912 of 911 sum of the first adjusting screw rod is respectively provided with corresponding flat recess, and engraves
About 26 hollow structure is opposite, with facilitate by screwdriver pair the first adjusting screw rod 911 of "-" type and the second adjusting screw rod 912 into
Row rotation operation.
In above each specific implementation, boring cutter 1111 is using cutter hub made of wolfram steel.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.