Note: Descriptions are shown in the official language in which they were submitted.
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WORM POLISHER
TECHNICAL FILED
The invention relates to a worm polisher, belonging to the technical field of
worm
processing equipment.
BACKGROUND ART
Worm is a main part of a worm reduction gearbox, and in order to improve the
transmission efficiency of a gear reduction motor, the surface roughness of
the worm must be
improved. Present worm grinding process needs relative high cost to obtain
very high surface
roughness. The worm polishing method has good economy and low cost, but there
is no
special equipment for worm polishing in the prior art, and manual work is
generally adopted
in polishing process, so the labor intensity is high, and it is difficult to
achieve the quality
conformity by artificial control of quality.
SUMMARY OF THE INVENTION
The object of the invention is to provide a worm polisher having relative low
cost and
capable of easily insuring processing quality conformity of worm workpieces
and solve the
problems of high labor intensity, difficult control of worm quality conformity
and the like
existing in the prior art adopting manual operation to polish worms.
The above technical object of the invention is achieved through the following
technical
solution: the worm polisher comprises a stand, a rag wheel drive motor is
disposed on said
stand, a polishing rag wheel is arranged on the output shaft of said rag wheel
drive motor, an
upright drawing plate is disposed besides the circumference of the polishing
rag wheel, a fist
cylinder and a elamper drive motor are mounted on the upright drawing plate at
intervals, the
piston rod of the first cylinder is connected with a movable elamper, a fixed
elamper is
provided on the output shaft of said elamper drive motor, and the movable
elamper and the
fixed elamper are oppositely and coaxially disposed; a guide block is fixedly
mounted on the
lower surface of the upright drawing plate, a rotary platform is disposed
below the guide block,
guide rails are mounted on the rotary platform in the direction parallel to
the axis of the
movable elamper and the fixed elamper, the upright drawing plate is slidably
connected with
the guide rails through the guide block, a second cylinder is mounted on the
rotary platform,
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the piston rod of the second cylinder is connected with the guide block, and
the second
cylinder drives the guide block to make the upright drawing plate slide along
the guide rails;
said rotary platform is pivotally connected to a support frame, the rotary
platform and the
support frame can be locked to each other, and the inclination angle of the
axis of the movable
clamper and the fixed clamper can be changed with the rotation of the rotary
platform; a
longitudinal slide-rail is arranged below the support frame and extends in the
direction
perpendicular to the axis of the rag wheel, the support frame is slidably
connected with the
longitudinal slide-rail, a first transmission nut is disposed on the support
frame, said first
transmission nut is in threaded fit with a longitudinal screw rod, one end of
said longitudinal
screw rod is connected with the piston rod of a third cylinder, the third
cylinder can drive the
longitudinal screw rod to move axially, and the axial movement of the
longitudinal screw rod
drives the support frame to slide along the longitudinal slide-rail; both said
longitudinal
slide-rail and the third cylinder are mounted on a pedestal, the stand is
provided with a
transverse slide-rail corresponding to the underneath of the pedestal, said
transverse slide-rail
extends in the direction parallel to the axis of the polishing rag wheel, the
pedestal is slidably
connected with the transverse slide-rail, a second transmission nut is fixedly
mounted on the
pedestal , the output shaft of an axial feed motor mounted on the stand is
connected with a
transverse screw rod which is in threaded connection with the second
transmission nut on the
pedestal, the axial feed motor drives the transverse screw rod to rotate, and
the transverse
screw rod is in threaded fit with the second transmission nut to cause the
pedestal to move
along the transverse slide-rail. In operation, the inclination of the upright
drawing plate is
firstly set by adjusting the relative position between the rotary platform and
the support frame
according to the helix angle of a worm workpiece to be processed, the relative
axial position
between the fixed clamper and the movable clamper is adjusted till said two
dampers are able
to load and unload the worm workpiece and should not be too long. In the
initial state, the first
cylinder drives the movable clamper to leave the fixed clamper so as to make
the distance
between the fixed clamper and the movable clamper larger than the axial length
of the worm
workpiece to be processed; the second cylinder drives the upright drawing
plate to slide along
the guide rails on the rotary platform, so that the clamping position of the
worm workpiece
axially leaves the polishing rag wheel, and the third cylinder drives the
support frame to slide
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along the longitudinal slide-rail, so that the upright drawing plate drives
the clamping position
of the worm workpiece to radially leave the polishing rag wheel; in clamping,
one end of the
worm workpiece to be processed is aligned to the fixed clamper, the first
cylinder is started up
to drive the movable clamper to fit with a clamper hole on the other end of
the worm
workpiece to be processed, so that the worm workpiece to be processed is
clamped between
the movable clamper and the fixed clamper; then the rag wheel drive motor is
started up to
drive the polishing rag wheel to rotate, the clamper drive motor drives the
worm workpiece to
be processed to rotate, the second cylinder drives the upright drawing plate
to slide along the
guide rails on the rotary platform and causes the worm workpiece to be
processed axially
closes to the circumference of the polishing rag wheel, the third cylinder
further drives the
support frame to slide along the longitudinal guide rail and causes the worm
workpiece to be
processed to contact with the circumference of the polishing rag wheel, and
the axial feed
motor drives the pedestal through the cooperation between the transverse screw
rod and the
second transmission nut on the pedestal to make the worm axially move, so that
the worm is
polished by the polishing rag wheel from one end to the other end; and the
polishing operation
to the worm is completed by repeating the above operation according to
requirement of
surface roughness level of the worm. When a worm workpiece processing is
finished, the
worm workpiece is unloaded in recovered initial state, then a new worm
workpiece to be
processed is loaded, and the above operation is repeated.
Preferably, a drive shaft bushing is sleeved on the other end of said
longitudinal screw
rod, the longitudinal screw rod and the drive shaft bushing are in
transmission connection
through a key in the circumference direction, the longitudinal screw rod and
the drive shaft
bushing can move axially to each other, said drive shaft busing is connected
with a handwheel
by which the drive shaft bushing can be driven to rotate. Wherein, when the
third cylinder
drives the longitudinal screw rod to move axially, an axial relative movement
occurs between
the longitudinal screw rod and the drive shaft bushing; if the drive shaft
bushing is rotated by
the handwheel, the drive shaft bushing is fitted to the longitudinal screw rod
through a key to
cause rotation of the longitudinal screw rod, the longitudinal screw rod
simultaneously drives
the piston rod of the third cylinder to rotate together, and the longitudinal
screw rod is able to
adjust the position between the upright drawing plate and the polishing rag
wheel through
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being cooperated with the first transmission nut mounted on the support frame
to compensate
difference caused by decreased diameter of the polishing rag wheel because of
abrasion and
meets requirements of depths of spiral grooves of different worm workpieces.
Preferably, said stand is internally provided with a protective cover, a door
that can be
opened for facilitating an operator to operate is arranged on said protective
cover
corresponding to the upright drawing plate, the protective cover is provided
with a deducting
ventilation mechanism, and the exhaust inlet of the dedusting ventilation
mechanism is
arranged nearby the polishing rag wheel. Wherein, the protective cover
arranged outside the
stand can prevent metal scrap produced during the worm workpiece being
polished by the
polishing rag wheel and scrap of the polishing rag wheel caused by abrasion
from falling,
thereby remaining the sanitary of working environment; the exhaust inlet of
the deducting
ventilation mechanism being arranged nearby the polishing rag wheel can help
to suck away
the metal scrap and scrap of the polishing rag wheel; in addition, the
operator can load and
unload a worm workpiece by opening the door.
Preferably, said movable damper is connected with the piston rod of the first
cylinder by
a connecting plate having two guide holes, said two guide holes are
respectively slidably
connected with two fixed guide posts distributed on both sides of the first
cylinder, wherein
the movable damper is connected with the piston rod of the first cylinder by a
connecting
plate, and the connecting plate is slidably connected with the two fixed guide
posts through
the two guide holes, which improves the guiding performance of the movable
damper,
prevents the difference of the movable damper and thus ensure the aligning
cooperation
between the movable damper and the damper hole of the worm workpiece.
Preferably, the guide rails on the rotary platform consists of two parallel
rails, said two
guide rails are respectively distributed on both sides of the piston rod of
the second cylinder,
wherein the upright drawing plate is slidably connected with the rotary
platform through the
two guide rails distributed on both sides of the piston rod of the second
cylinder, which
improves the guidance between the upright drawing plate and the rotary
platform and ensures
movement of the upright drawing plate along the direction of the axis of the
worm wokpiece,
thereby guaranteeing the polishing effect of the polishing rag wheel to the
worm workpiece.
Preferably, said fixed damper is mounted on the output shaft of the damper
drive motor
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via a three jaw chuck, wherein said fixed clamper being assembled with the
output shaft of the
drive motor via the three jaw chuck facilitates the adjustment of axial
distance between the
fixed clamper and the movable clamper, thereby meeting polishing requirements
of worm
workpieces with different lengths.
Therefore, the worm polisher of the invention has low cost, can easily ensure
the
processing quality conformity of worms and the like.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a front view of the structure of the invention;
Figure 2 is a top view of the structure of the invention; and
Figure 3 is a top view of the structure under the support frame of the
invention.
DETAILED DESCRIPTION OF THE EMBODIMENT
The technical solution of the invention is further described by combining the
following
embodiment and the drawings.
Embodiment 1: referring to figure 1, figure 2 and figure 3, a rag wheel drive
motor 2 is
disposed on a stand 1, a polishing rag wheel 3 is arranged on the output shaft
of the rag wheel
drive motor 1, an upright drawing plate 4 is positioned besides the
circumference of the
polishing rag wheel 3, a first cylinder 5 and a clamper drive motor 6 are
disposed on the
upright drawing plate 4 at intervals, the piston rod of the first cylinder 5
is connected with a
movable clamper 7, the movable clamper 7 and the piston rod of the first
cylinder 5 are
connected by a connecting plate 8, the connecting plate is provided with two
guide holes, and
the two guide holes are respectively slidably connected with two fixed guide
posts 9
distributed on both sides of the first cylinder 5. A fixed clamper 10 is
disposed on the output
shaft of the clamper drive motor 6, the fixed clamper 10 is mounted on the
output shaft of the
clamper drive motor 6 through a three jaw chuck 11, and the movable clamper 7
and the fixed
clamper 10 are arranged coaxially and oppositely.
A guide block 12 is fixedly mounted on the lower surface of the upright
drawing plate 4,
a rotary platform 13 is arranged below the guide block 12, guide rails (not
shown) extending
in the direction parallel to the axis of the movable clamper 7 and the fixed
clamper 10 are
disposed on the rotary platform 13, the guide rails consists of two parallel
rails, the upright
drawing plate 4 is slidably connected with the guide rails through the guide
block 12, a second
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cylinder 14 is mounted on the rotary platform 13, the two guide rails are
distributed at both
sides of the piston rod of the second cylinder 14, the piston rod of the
second cylinder 14 is
connected with the guide block 12, and the second cylinder 14 drives the guide
block 12 to
cause the upright drawing plate 4 to move along the two guide rails.
The rotary platform 13 is pivotally connected to the support frame 15, the
rotary platform
13 and the support frame 15 can be locked to each other, and the inclination
angle of the axis
of the movable damper 7 and the fixed damper 10 can be changed with the
rotation of the
rotary platform 13; a longitudinal slide-rail 16 (refer to figure 3) is
arranged below the support
frame 15, the longitudinal slide-rail 16 extends along the direction
perpendicular to the axis of
the polishing rag wheel 3, the support frame 15 is slidably connected with the
longitudinal
slide-rail 16, a first transmission nut 17 is disposed on the support frame
15, the first
transmission nut 17 is in threaded fit with a longitudinal screw rod 18, one
end of the
longitudinal screw rod 18 is connected with the piston rod of a third cylinder
19, a drive shaft
bushing 20 is sleeved on the other end of the longitudinal screw rod 18, the
longitudinal screw
rod 18 is connected with the drive shaft busing 20 via a key in the
circumference direction, the
third cylinder 19 can drive the longitudinal screw rod 18 to axially move
relative to the drive
shaft bushing 20, the axial movement of the longitudinal screw rod 18 drives
the support
frame 15 to slide along the longitudinal slide-rail 16, the drive shaft
bushing 20 is connected
with a handwheel 21 by which the drive shaft bushing 20 can be driven to
rotate, and when the
third cylinder 19 drives the longitudinal screw rod 18 to axially move, an
axial relative
movement occurs between the longitudinal screw rod 18 and the drive shaft
bushing 20; while
when the dive shaft bushing 20 is driven to rotate by the handwheel, the drive
shaft bushing
20 is cooperated with the longitudinal screw rod 18 through a key to drive the
longitudinal
screw rod 18 to rotate, the longitudinal screw rod 18 simultaneously drives
the piston rod of
the third cylinder 19 to rotate together, the longitudinal screw rod 18 is
able to adjust the
position between the upright drawing plate 4 and the polishing rag wheel 3
through being
cooperated with the first transmission nut 17 mounted on the support frame 15
to compensate
difference caused by decreased diameter of the polishing rag wheel 3 because
of abrasion and
meet requirements of depths of spiral grooves of different worm workpieces.
Both the longitudinal slide-rail 16 and the third cylinder 19 are mounted on
the pedestal
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22, two parallel transverse slide-rails 23 are mounted on the stand 1
corresponding to the
underneath of the pedestal 22, the transverse slide-rails 23 extend along the
direction parallel
to the axis of the polishing rag wheel 3, the pedestal 22 is slidably
connected with the
transverse slide-rails 23, a second transmission nut 24 is fixedly mounted on
the pedestal 22,
the output shaft of an axial feed motor 25 disposed on the stand I is
connected with a
transverse screw rod 26 which is in threaded connection with the second
transmission nut 24
on the pedestal 22, the axial feed motor 25 drives the transverse screw rod 26
to rotate, and the
transverse screw rod 26 is in threaded fit with the second screw rod 24 to
cause the pedestal
22 to slide along the transverse slide-rails 23.
In operation, the inclination of the upright drawing plate is firstly set by
adjusting the
relative position between the rotary platform and the support frame according
to the helix
angle of a worm workpiece to be processed, the relative axial position between
the fixed
clamper and the movable clamper is adjusted till said two clampers are able to
load and
unload the worm workpiece and should not be too long. In the initial state,
the first cylinder
drives the movable clamper to leave the fixed clamper so as to make the
distance between the
fixed clamper and the movable clamper larger than the axial length of the worm
workpiece to
be processed; the second cylinder drives the upright drawing plate to slide
along the guide
rails on the rotary platform, so that the clamping position of the worm
workpiece axially
leaves the polishing rag wheel, and the third cylinder drives the support
frame to slide along
the longitudinal slide-rail, so that the upright drawing plate drives the
clamping position of the
worm workpiece to radially leave the polishing rag wheel; as shown in figure 1
and figure 2,
in clamping, one end of the worm workpiece 27 to be processed is aligned to
the fixed
clamper, the first cylinder is started up to drive the movable clamper to fit
with a clamper hole
on the other end of the worm workpiece to be processed, so that the worm
workpiece to be
processed is clamped between the movable clamper and the fixed clamper; then
the rag wheel
drive motor is started up to drive the polishing rag wheel to rotate, the
clamper drive motor
drives the worm workpiece to be processed to rotate, the second cylinder
drives the upright
drawing plate to slide along the guide rails on the rotary platform and causes
the worm
workpiece to be processed axially closes to the circumference of the polishing
rag wheel, the
third cylinder further drives the support frame to slide along the
longitudinal guide rail and
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causes the worm workpiece to be processed to contact with the circumference of
the polishing
rag wheel, and the axial feed motor drives the pedestal through the
cooperation between the
transverse screw rod and the second transmission nut on the pedestal to make
the worm
axially move, so that the worm is polished by the polishing rag wheel from one
end to the
other end; and the polishing operation to the worm is completed by repeating
the above
operation according to requirement of surface roughness level of the worm.
When a worm
workpiece processing is finished, the worm workpiece is unloaded in recovered
initial state,
then a new worm workpiece to be processed is loaded, and the above operation
is repeated.
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