CN206536050U - A kind of drilling machine rocking arm retaining mechanism - Google Patents
A kind of drilling machine rocking arm retaining mechanism Download PDFInfo
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- CN206536050U CN206536050U CN201621452098.5U CN201621452098U CN206536050U CN 206536050 U CN206536050 U CN 206536050U CN 201621452098 U CN201621452098 U CN 201621452098U CN 206536050 U CN206536050 U CN 206536050U
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Abstract
The utility model discloses a kind of drilling machine rocking arm retaining mechanism, drilling machine rocking arm retaining mechanism includes pressure portion and lever portion, and pressure portion is fixed on drilling machine, and for output pressure, pressure portion is also connected with the top of column；One end of lever portion and the top contact of column, the other end of lever portion are connected with pressure portion, the pressure for receiving the output of pressure portion；Lever portion is sent to the top of column using adjusting nut as fulcrum after the pressure amplification for exporting pressure portion.Advantage and beneficial effect of the present utility model are：Larger pressure can be exported by lever at the top of column by hydraulic station is only needed to export less hydraulic pressure, and make the stronger compression rocking arm mandrel inner conical structure of column male cone (strobilus masculinus), and then improve the coupling mechanism force of drilling machine rocking arm；It can also make drilling machine rocking arm that there is bigger coupling mechanism force to meet the demand of processing large-scale workpiece simultaneously, reduce the production cost of enterprise；The utility model is simple in construction, and cost of manufacture is cheap, and with good stability.
Description
Technical field
The utility model is related to mechanical field, more particularly to a kind of drilling machine rocking arm retaining mechanism.
Background technology
Drilling machine refers to the main lathe for processing hole on workpiece with drill bit, wherein, the rocking arm of drilling machine is mainly by along column post
Oscilaltion or rotation, change the relative position between main spindle box and workpiece, with the demand for the workpiece for adapting to process different height；
And existing lathe is mainly connected by hydraulic station with oil cylinder, the piston rod of oil cylinder is directly acted on column on column and apply
Pressure, and then column is compressed locking of the rocking arm mandrel realization to rocking arm, it follows that the coupling mechanism force of rocking arm is exported with hydraulic station
Pressure be consistent, therefore, when if desired processing large-scale workpiece and needing the rocking arm there is larger coupling mechanism force, then need large-scale liquid
Pressure station provides enough hydraulic pressure, improves the production cost of enterprise.
Utility model content
In order to solve the above problems, the utility model provides a kind of drilling machine rocking arm retaining mechanism.The technical program is by inciting somebody to action
Hydraulic station is connected with pressure portion makes pressure portion to lever portion output pressure, and lever portion will put pressure using adjusting nut as fulcrum
The top of column is sent to after big, hydraulic station is only needed to export less hydraulic pressure and can be exported by lever at the top of column
Larger pressure, and make the stronger compression rocking arm mandrel inner conical structure of column male cone (strobilus masculinus), and then improve the lock of drilling machine rocking arm
Clamp force；The also exportable larger hydraulic pressure of hydraulic station makes lever portion export bigger pressure at the top of column, shakes drilling machine
Arm has bigger coupling mechanism force to meet the demand of processing large-scale workpiece, reduces the production cost of enterprise；Meanwhile, this technology side
The drilling machine rocking arm locking mechanism structure of case is simple, and cost of manufacture is cheap, and with good stability.
A kind of drilling machine rocking arm retaining mechanism in the utility model, on drilling machine, the drilling machine include rocking arm mandrel,
Column, positioning sleeve, adjusting nut；One end of the positioning sleeve is fixed on the top of the column, one end of the rocking arm mandrel
It is fixed on through the positioning sleeve and by the adjusting nut on the positioning sleeve, the rocking arm mandrel dorsad regulation spiral shell
Female one end has inner conical structure, and the bottom of the column has the male cone (strobilus masculinus) with the inner conical structure matching, described outer
The conical surface, which is under pressure, compresses the inner conical structure locking rocking arm mandrel；
The drilling machine rocking arm retaining mechanism includes pressure portion and lever portion, and the pressure portion is fixed on the drilling machine, and
For output pressure, top of the pressure portion also with the column is connected；One end of the lever portion and the top of the column
Portion is contacted, and the other end of the lever portion is connected with the pressure portion, the pressure for receiving the pressure portion output；The thick stick
Bar portion is sent to the top of the column using the adjusting nut as fulcrum after the pressure amplification for exporting the pressure portion.
In such scheme, the pressure portion includes the hydraulic mechanism and transmission mechanism being connected with each other, and the hydraulic mechanism is consolidated
It is scheduled on the drilling machine, the hydraulic mechanism is connected to output pressure, the transmission mechanism and the hydraulic press with hydraulic station
Structure is connected to change the direction of the pressure or the size of the amplification pressure.
In such scheme, the hydraulic mechanism includes oil cylinder, piston, piston rod and mounting seat；The angled slide block with it is described
Column top connection, the mounting seat be connected with the angled slide block oil cylinder be fixed in the mounting seat and with the liquid
Pressure station connection, the piston is located inside the oil cylinder, and one end of the piston rod is connected with the piston, the piston rod
The other end is connected with the transmission mechanism；
The piston rod passes through the piston towards one end of the piston, and the piston rod passes through one end of the piston
Piston unt is connected with, the side of the piston rod has piston circular protrusion, the piston unt and piston circular protrusion phase
Mutually coordinate and the piston press is fixed on the piston rod.
In such scheme, the transmission mechanism includes push rod, sliding block, roller, execution block and rhombus stretching block；
One end of the push rod is connected with the execution block, and the other end of the push rod is connected with the roller, the rolling
Wheel is also connected to receive the pressure of the hydraulic mechanism output, the execution block and the rhombus stretching block phase with the piston rod
It is mutually fixed；
The sliding block has the chute that match with the roller, and the axial direction of the chute and the push rod are axially formed the
One angle, the push rod is mutually perpendicular to the piston rod, the roller be located at the chute in and can along the chute axle
To moving back and forth, the push rod is set to be moved back and forth along the axis direction perpendicular to the piston rod；
The described one end for performing block of the direction of the push rod passes through the execution block, and the push rod passes through the execution block
One end is connected with push rod nut, and the side of the push rod has push rod circular protrusion, the push rod nut and push rod circular protrusion
Cooperate and the execution block is fixed on the push rod.
In such scheme, the hydraulic mechanism also includes chute pressing plate and push rod overcoat, and the oil cylinder is located at described install
The top of seat side, the sliding block is located at the lower section of the oil cylinder, and the chute pressing plate is fixed on described towards the sliding block
Side；The push rod overcoat runs through the two ends of the mounting seat, and one end of the push rod passes through the push rod overcoat and the cunning
Groove pressing plate is connected with the roller.
In such scheme, the transmission mechanism also includes upper V-block, and upper V-block and the rhombus stretching block are dorsad described
The end thereof contacts of column, the side of the upper V-block dorsad rhombus stretching block is connected with the lever portion.
In such scheme, the transmission mechanism also includes lower V-block and angled slide block, and the lower V-block is supportted with the rhombus
Tight block is towards the end thereof contacts of the column, and dorsad the side of the rhombus stretching block connects the lower V-block with the angled slide block
Connect, the side of the angled slide block dorsad lower V-block is connected with the column.
In such scheme, the rhombus stretching block has retainingf key, and the execution block has V-groove, the V-groove and institute
State retainingf key to be mutually twisted, the execution block is interfixed with rhombus stretching block.
In such scheme, the lever portion includes the body of rod, locking substrate and support bar；The top of one end of the body of rod with
The locking substrate connection, the bottom of the other end of the body of rod is connected with the support bar, and the locking substrate is described in
The side of column is connected with the pressure portion, the top contact of the support bar dorsad side of the body of rod and the column；
The top of the body of rod side is contacted with the adjusting nut, the adjusting nut as the body of rod fulcrum.
In such scheme, one end of the dorsad described column of the positioning sleeve has bowl-type pad, and the rocking arm mandrel is also
Through the bowl-type pad.
Advantage and beneficial effect of the present utility model are：The utility model provides a kind of drilling machine rocking arm retaining mechanism, makes
Hydraulic station only needs to export less hydraulic pressure can be exported larger pressure by lever at the top of column, and make column outer cone
The stronger compression rocking arm mandrel inner conical structure in face, and then improve the coupling mechanism force of drilling machine rocking arm；Hydraulic station is also exportable simultaneously
Larger hydraulic pressure makes lever portion export bigger pressure at the top of column, make drilling machine rocking arm have bigger coupling mechanism force with
The demand of processing large-scale workpiece is met, the production cost of enterprise is reduced, while the utility model is simple in construction, low manufacture cost
It is honest and clean, and with good stability.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of drilling machine rocking arm retaining mechanism of the utility model.
In figure：1st, drilling machine 2, pressure portion 3, lever portion 11, rocking arm mandrel
12nd, column 13, positioning sleeve 14, adjusting nut 15, bowl-type pad
21st, hydraulic mechanism 22, transmission mechanism 211, oil cylinder 212, piston
213rd, piston rod 214, mounting seat 215, piston circular protrusion
216th, piston unt 217, chute pressing plate 218, push rod overcoat
221st, push rod 222, sliding block 223, roller 224, execution block
225th, rhombus stretching block 226, chute 227, upper V-block 228, lower V-block
229th, angled slide block 2211, push rod circular protrusion 2212, push rod nut 2241, V-groove
2251st, retainingf key 31, the body of rod 32, locking substrate 33, support bar
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and protection model of the present utility model can not be limited with this
Enclose.
As shown in figure 1, the utility model is a kind of drilling machine rocking arm retaining mechanism, on drilling machine 1, drilling machine 1 includes shaking
Arm mandrel 11, column 12, positioning sleeve 13, adjusting nut 14；One end of positioning sleeve 13 is fixed on the top of column 12, rocking arm mandrel
11 one end by adjusting nut 14 through positioning sleeve 13 and being fixed on positioning sleeve 13, dorsad adjusting nut 14 of rocking arm mandrel 11
One end there is inner conical structure (not shown), the bottom of column 12 has the male cone (strobilus masculinus) (figure with inner conical structure matching
Not shown in), male cone (strobilus masculinus), which is under pressure, compresses inner conical structure locking rocking arm mandrel 11；
Drilling machine rocking arm retaining mechanism includes pressure portion 2 and lever portion 3, and pressure portion 2 is fixed on drilling machine 1, and for exporting
Pressure, top of the pressure portion 2 also with column 12 is connected；One end of lever portion 3 and the top contact of column 12, lever portion 3 it is another
One end is connected with pressure portion 2, the pressure for receiving the output of pressure portion 2；Lever portion 3 is fulcrum with adjusting nut 14, by pressure
The top of column 12 is sent to after the pressure amplification that portion 2 is exported.
The operation principle of above-mentioned technical proposal is：Hydraulic station (not shown) is connected with pressure portion 2 makes pressure portion 2 to thick stick
The output pressure of bar portion 3, lever portion 3 will be fulcrum with adjusting nut 14, and the top of column 12 is sent to after pressure is amplified, makes liquid
Pressure station only needs to export less hydraulic pressure can be exported larger pressure by lever portion 3 at the top of column 12, and make column
The stronger inner conical structure of compression rocking arm mandrel 11 of 12 male cone (strobilus masculinus)s, and then improve the coupling mechanism force of the rocking arm of drilling machine 1；Hydraulic station may be used also
The larger hydraulic pressure of output makes lever portion 3 export bigger pressure at the top of column 12, has the rocking arm of drilling machine 1 bigger
Coupling mechanism force processes the demand of large-scale workpiece to meet；Meanwhile, the drilling machine rocking arm locking mechanism structure of the technical program is simple, makes
It is with low cost, and with good stability.
Specifically, pressure portion 2 includes the hydraulic mechanism 21 and transmission mechanism 22 being connected with each other, hydraulic mechanism 21 is fixed on brill
On bed 1, hydraulic mechanism 21 is connected to output pressure with hydraulic station, and transmission mechanism 22 is connected to change pressure with hydraulic mechanism 21
The direction of power or the size for amplifying pressure.
Further, hydraulic mechanism 21 includes oil cylinder 211, piston 212, piston rod 213 and mounting seat 214；Angled slide block 229
It is connected with the top of column 12, mounting seat 214 is connected oil cylinder 211 with angled slide block 229 and is fixed in mounting seat 214 and and hydraulic station
Connection, piston 212 be located at oil cylinder 211 inside, one end of piston rod 213 is connected with piston 212, the other end of piston rod 213 and
Transmission mechanism 22 is connected；
Piston rod 213 passes through piston 212 towards one end of piston 212, and piston rod 213 is connected through one end of piston 212
There is piston unt 216, the side of piston rod 213 has piston circular protrusion 215, piston unt 216 and piston circular protrusion 215
Cooperate and the extruding of piston 212 is fixed on piston rod 213.
Further, transmission mechanism 22 includes push rod 221, sliding block 222, roller 223, execution block 224 and rhombus stretching block
225；
One end of push rod 221 with perform block 224 be connected, the other end of push rod 221 is connected with roller 223, roller 223 also with
Piston rod 213 connects to receive the pressure of the output of hydraulic mechanism 21, performs block 224 and is interfixed with rhombus stretching block 225；
Sliding block 222 has the chute 226 that match with roller 223, and the axial direction of chute 226 and push rod 221 are axially formed the
One angle, push rod 221 is mutually perpendicular to piston rod 213, roller 223 be located at chute 226 in and can along chute 226 axial reciprocating
It is mobile, push rod 221 is moved back and forth along the axis direction perpendicular to piston rod 213；Wherein, chute 226 dorsad push rod 221 one
Hold to extend downwardly；
One end that the direction of push rod 221 performs block 224 passes through the one end for performing block 224 through block 224, push rod 221 is performed
Push rod nut 2212 is connected with, the side of push rod 221 has push rod circular protrusion 2211, and push rod nut 2212 and push rod ring-type are prominent
2211 mutual cooperations are played to be fixed on block 224 is performed on push rod 221.
It is preferred that, hydraulic mechanism 21 also includes the pressing plate 217 of chute 226 and the overcoat 218 of push rod 221, and oil cylinder 211, which is located at, to be installed
The top of 214 sides of seat, sliding block 222 is located at the lower section of oil cylinder 211, and the pressing plate 217 of chute 226 is fixed on one towards sliding block 222
Side；The overcoat 218 of push rod 221 runs through the two ends of mounting seat 214, and one end of push rod 221 passes through the overcoat 218 of push rod 221 and chute 226
Pressing plate 217 is connected with roller 223.
It is preferred that, transmission mechanism 22 also includes upper V-block 227, upper V-block 227 and rhombus stretching block 225 dorsad column 12
End thereof contacts, dorsad the side of rhombus stretching block 225 is connected upper V-block 227 with lever portion 3.
It is preferred that, transmission mechanism 22 also includes lower V-block 228 and angled slide block 229, lower V-block 228 and rhombus stretching block
225 towards column 12 end thereof contacts, dorsad the side of rhombus stretching block 225 is connected lower V-block 228 with angled slide block 229, ejection
Block 229 dorsad descends the side of V-block 228 to be connected with column 12.
It is preferred that, rhombus stretching block 225 have retainingf key 2251, perform block 224 have V-groove 2241, V-groove 2241 with
Retainingf key 2251 is mutually twisted, and execution block 224 is interfixed with rhombus stretching block 225；
Wherein, push rod 221 receives the downward pressure of piston rod 213, makes roller 223 in chute 226 towards push rod 221
Mobile, the downward power of piston rod 213 is converted into the size of the power of the horizontal direction of push rod 221, can be by setting the angle of the first angle
Degree can change；The control of push rod 221 performs block 224, and dorsad mounting seat 214 is moved, and is performed block 224 and is driven rhombus to support by fixture
Tight block 225 is moved, and now produces displacement between rhombus stretching block 225 and upper V-block 227 and lower V-block 228, and then make V-type
Block 227 is moved up and to the output pressure of lever portion 3, lower V-block 228 is moved down and is exported to the top of column 12 and is pressed
Power；The power of the horizontal direction of push rod 221 is converted into the downward pressure of V-block 228 under the one-level that upwards pressure of V-block 227
Size, can be changed by the inclination angle for inclination angle, upper V-block 227 and the lower V-block 228 for setting the two ends of rhombus stretching block 225.
Specifically, lever portion 3 includes the body of rod 31, locking substrate 32 and support bar 33；The top of one end of the body of rod 31 and lock
Tight substrate 32 is connected, and the bottom of the other end of the body of rod 31 is connected with support bar 33, locking substrate 32 towards the side of column 12 and
Pressure portion 2 is connected, the top contact of the support bar 33 dorsad side of the body of rod 31 and column 12；The top of the side of the body of rod 31 and regulation
Nut 14 is contacted, adjusting nut 14 as the body of rod 31 fulcrum；Locking substrate 32 receives upwarding pressure for upper V-block 227, and
One end of locking substrate 32 and the body of rod 31 towards locking substrate 32 is driven to be lifted up, the body of rod 31 is used as fulcrum using adjusting nut 14
Support bar 33 will be sent to after the amplification that upwards pressure of upper V-block 227, the pressure after amplification is sent to column by support bar 33
12 top.
It is preferred that, one end of the dorsad column 12 of positioning sleeve 13 has bowl-type pad 15, and rocking arm mandrel 11 also extends through bowl-type
Pad 15.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of drilling machine rocking arm retaining mechanism, on drilling machine, the drilling machine includes rocking arm mandrel, column, positioning sleeve, regulation
Nut；One end of the positioning sleeve is fixed on the top of the column, and one end of the rocking arm mandrel passes through the positioning sleeve simultaneously
It is fixed on by the adjusting nut on the positioning sleeve, one end of the rocking arm mandrel dorsad adjusting nut has inner cone
Shape structure, the bottom of the column has a male cone (strobilus masculinus) with the inner conical structure matching, and the male cone (strobilus masculinus) is under pressure compression
The inner conical structure locks the rocking arm mandrel；Characterized in that,
The drilling machine rocking arm retaining mechanism includes pressure portion and lever portion, and the pressure portion is fixed on the drilling machine, and is used for
Output pressure, top of the pressure portion also with the column is connected；One end of the lever portion at the top of the column with connecing
Touch, the other end of the lever portion is connected with the pressure portion, the pressure for receiving the pressure portion output；The lever portion
Using the adjusting nut as fulcrum, the top of the column is sent to after the pressure amplification that the pressure portion is exported.
2. a kind of drilling machine rocking arm retaining mechanism according to claim 1, it is characterised in that the pressure portion includes mutually interconnecting
The hydraulic mechanism and transmission mechanism connect, the hydraulic mechanism is fixed on the drilling machine, and the hydraulic mechanism is connected with hydraulic station
For output pressure, the transmission mechanism is connected to change the direction of the pressure with the hydraulic mechanism or amplifies the pressure
The size of power.
3. a kind of drilling machine rocking arm retaining mechanism according to claim 2, it is characterised in that the hydraulic mechanism includes oil
Cylinder, piston, piston rod and mounting seat；Angled slide block is connected with the top of the column, and the mounting seat is connected with the angled slide block
The oil cylinder is fixed in the mounting seat and is connected with the hydraulic station, and the piston is located inside the oil cylinder, the work
One end of stopper rod is connected with the piston, and the other end of the piston rod is connected with the transmission mechanism；
The piston rod passes through the piston towards one end of the piston, and the piston rod is connected through one end of the piston
There is piston unt, the side of the piston rod has piston circular protrusion, the piston unt and piston circular protrusion phase interworking
The piston press is fixed on the piston rod by conjunction.
4. a kind of drilling machine rocking arm retaining mechanism according to claim 3, it is characterised in that the transmission mechanism includes top
Bar, sliding block, roller, execution block and rhombus stretching block；
One end of the push rod is connected with the execution block, and the other end of the push rod is connected with the roller, and the roller is also
It is connected with the piston rod to receive the pressure of the hydraulic mechanism output, the execution block and the rhombus stretching block are mutually solid
It is fixed；
The sliding block has the chute matched with the roller, and the axial direction of the chute is axially formed the first folder with the push rod
Angle, the push rod is mutually perpendicular to the piston rod, and the roller is located in the chute and can be past along the axial direction of the chute
It is multiple mobile, the push rod is moved back and forth along the axis direction perpendicular to the piston rod；
The described one end for performing block of the direction of the push rod passes through the execution block, and the push rod passes through one end of the execution block
Push rod nut is connected with, the side of the push rod has push rod circular protrusion, and the push rod nut and push rod circular protrusion are mutual
Coordinate and the execution block is fixed on the push rod.
5. a kind of drilling machine rocking arm retaining mechanism according to claim 4, it is characterised in that the hydraulic mechanism also includes sliding
Groove pressing plate and push rod overcoat, the oil cylinder are located at the top of the mounting seat side, and the sliding block is located at the lower section of the oil cylinder,
The chute pressing plate is fixed on the side towards the sliding block；The push rod overcoat runs through the two ends of the mounting seat, institute
The one end for stating push rod is connected through the push rod overcoat and the chute pressing plate with the roller.
6. a kind of drilling machine rocking arm retaining mechanism according to claim 4, it is characterised in that the transmission mechanism also includes upper
V-block, the end thereof contacts of upper V-block and the rhombus stretching the block dorsad column, the upper V-block dorsad rhombus support
The side of tight block is connected with the lever portion.
7. a kind of drilling machine rocking arm retaining mechanism according to claim 4, it is characterised in that under the transmission mechanism also includes
V-block and angled slide block, the lower V-block and the rhombus stretching block are towards the end thereof contacts of the column, the lower V-block back of the body
Be connected to the side of the rhombus stretching block with the angled slide block, the angled slide block dorsad the side of the lower V-block with it is described
Column is connected.
8. a kind of drilling machine rocking arm retaining mechanism according to claim 4, it is characterised in that the rhombus stretching block has solid
Determine key, the execution block has V-groove, and the V-groove is mutually twisted with the retainingf key, make the execution block and rhombus stretching
Block interfixes.
9. a kind of drilling machine rocking arm retaining mechanism according to claim 1, it is characterised in that the lever portion include the body of rod,
Lock substrate and support bar；The top of one end of the body of rod and the locking substrate connection, the bottom of the other end of the body of rod
Portion is connected with the support bar, and the locking substrate is connected towards the side of the column with the pressure portion, the support bar
The dorsad top contact of the side of the body of rod and the column；The top of the body of rod side is contacted with the adjusting nut,
The adjusting nut as the body of rod fulcrum.
10. a kind of drilling machine rocking arm retaining mechanism according to claim 1, it is characterised in that the dorsad institute of the positioning sleeve
Stating one end of column has bowl-type pad, and the rocking arm mandrel also extends through the bowl-type pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621452098.5U CN206536050U (en) | 2016-12-28 | 2016-12-28 | A kind of drilling machine rocking arm retaining mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621452098.5U CN206536050U (en) | 2016-12-28 | 2016-12-28 | A kind of drilling machine rocking arm retaining mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206536050U true CN206536050U (en) | 2017-10-03 |
Family
ID=59937965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621452098.5U Active CN206536050U (en) | 2016-12-28 | 2016-12-28 | A kind of drilling machine rocking arm retaining mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN206536050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994347A (en) * | 2018-09-29 | 2018-12-14 | 高邮市鑫顺机械制造有限公司 | A kind of the set lever structure and its operating method of bench drill |
-
2016
- 2016-12-28 CN CN201621452098.5U patent/CN206536050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994347A (en) * | 2018-09-29 | 2018-12-14 | 高邮市鑫顺机械制造有限公司 | A kind of the set lever structure and its operating method of bench drill |
| CN108994347B (en) * | 2018-09-29 | 2020-04-07 | 高邮市鑫顺机械制造有限公司 | Locking handle structure of bench drill and operation method thereof |
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