TECHNICAL FIELD
[0001] The present invention relates to the technical field of abrasive wheel tools, and
more particularly to a special-shaped wheel having a water passing structure positively
correlated with a full grinding surface.
BACKGROUND
[0002] As shown in FIG. 1 and FIG. 2, several water passing holes 10 are circumferentially
formed in a base of a special-shaped wheel (i.e., an abrasive wheel) in the prior
art. As shown by a mark C in FIG. 2, cooling may be performed through the several
water passing holes 10. However, due to the small number of water passing holes 10
and the limited water output, an internal cooling mode cannot be formed in an entire
grinding process. As shown by a mark D in FIG. 2, the water passing holes 10 are generally
formed in a circumference of an axial middle portion of a grinding region of the abrasive
wheel and cannot axially cover the entire grinding region, and an axial length of
each water passing hole 10 is smaller than an axial length of the grinding region.
Thus, when a machining workpiece initially contacts the abrasive wheel or will be
separated from the abrasive wheel, the machining workpiece cannot be cooled or can
only be slightly cooled if a contact point is not in a region axially covered by the
water passing holes 10. The water passing hole 10 generally is circular, such that
the water flow at upper and lower ends of the abrasive wheel is relatively small.
In an external cooling mode, it is very difficult to cool a small-diameter region
of the abrasive wheel due to an adverse effect of a centrifugal force. Since an airflow
barrier will be formed during high-speed rotation of the abrasive wheel, the high-speed
grinding problem will be more severe under the action of the airflow barrier.
SUMMARY
[0003] In order to overcome the shortcomings in the prior art, the technical problem to
be solved by the present invention is to provide a special-shaped wheel having a water
passing structure positively correlated with a full grinding surface.
[0004] In order to solve the above technical problem, the technical solution of the present
invention is as follows: a special-shaped wheel having a water passing structure positively
correlated with a full grinding surface includes a base; a grinding layer is attached
to an outer wall of the base, and an outer circumferential surface of the grinding
layer is a grinding surface; a water inlet is formed in a top surface of the base,
and a connection hole for connecting an external device is formed in a bottom surface
of the base. The special-shaped wheel further includes a plurality of water passing
grooves; the plurality of water passing grooves is densely formed around the base
by taking a central axis of the base as an axis, communicates an inner side of the
base with the grinding surface, and axially covers the entire grinding surface. That
is, the axial height of an opening of the water passing groove covers the axial height
of a grinded region of a machining workpiece, and the total length of accumulated
circumferences of the corresponding water passing grooves at respective axial grinding
points of the grinding surface is set in positive correlation with the grinding area
of the grinding point.
[0005] The above-mentioned positive correlation refers to that a dependent variable increases
along with the increase of an independent variable. In other words, an opening of
the water passing groove at each axial point is in positive correlation with a machining
allowance (the grinding area of this point). That is, the larger the machining allowance,
the larger the opening of the water passing groove.
[0006] Based on the above technical solution, the present invention may further include
the following improvements.
[0007] Further, the total length of the accumulated circumferences of the corresponding
water passing grooves at the respective axial points of the grinding surface is n×Wi,
wherein i refers to the grinding point on the grinding surface, n refers to the number
of water passing grooves, and Wi refers to an opening width of the corresponding water
passing groove at the grinding point i.
[0008] The grinding area of the point i is set as S, such that the total length of accumulated
circumferences (n×Wi) is proportional to the grinding area S.
[0009] The present invention has the following beneficial effects.
- 1. Feed water enters from the water inlet in an end surface of the special-shaped
wheel, and the water passing grooves are densely formed in the circumferential direction
to cool a working surface.
- 2. The water passing grooves are axially formed in the full grinding surface of the
special-shaped wheel to be less affected by the airflow barrier, and densely arranged
to facilitate forming the internal cooling mode.
- 3. The entire grinding surface of the special-shaped wheel can be covered by cooling
water under the forward action of a centrifugal force.
- 4. The opening of the water passing groove of each axial point is in positive correlation
with the machining allowance (i.e., the grinding area of the point), that is, the
larger the machining allowance, the larger the opening of the water passing groove.
- 5. The technical problem in which the cooling water is difficult to be applied to
the full grinding surface in the overall one-time manufacturing is solved, thereby
greatly reducing the manufacturing cost.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
FIG. 1 is a schematic structural diagram of a special-shaped wheel in the prior art
according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a water passing hole of a special-shaped wheel in
the prior art according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a special-shaped wheel having a water
passing structure positively correlated with a full grinding surface according to
an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cushion block according to an embodiment
of the present invention;
FIG. 5 is a schematic structural diagram of a water passing groove according to an
embodiment of the present invention;
FIG. 6 is a principle diagram in which a water passing groove is formed according
to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a spiral water passing groove according
to an embodiment of the present invention;
FIG. 8 is a top view of a water suction component according to an embodiment of the
present invention;
FIG. 9 is a schematic structural diagram of a water suction component according to
an embodiment of the present invention;
FIG. 10 is a schematic diagram of connection between a water suction component and
a base according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of an annular groove according to an embodiment of
the present invention;
FIG. 12 is a schematic structural diagram of a water passing groove of an arc wheel
according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of cooling water flowing in an arc wheel according
to an embodiment of the present invention;
FIG. 14 is a sectional view of an arc wheel according to an embodiment of the present
invention;
FIG. 15 is a schematic structural diagram in which a water passing groove of a small-diameter
abrasive wheel is formed according to an embodiment of the present invention;
FIG. 16 is a sectional view of a small-diameter abrasive wheel according to an embodiment
of the present invention; and
FIG. 17 is a schematic diagram of cooling water flowing in a small-diameter abrasive
wheel according to an embodiment of the present invention.
[0011] In the drawings, components represented by different numerals are listed as follows:
1. base; 2. water passing groove; 3. base spiral water passing groove; 4. cushion
block; 5. cushion block spiral water passing groove; 6. water suction component; 7.
cushion block annular groove; 8. base annular groove; 9. machining workpiece; 10.
water passing hole; 101. grinding surface; 601. inner ring; 602. outer ring; and 603.
water suction blade.
DETAILED DESCRIPTION
[0012] Principles and features of the present invention will be described below in combination
with the accompanying drawings. Embodiments are merely used to explain the present
invention rather than limit the scope of the present invention.
[0013] As shown in FIGs. 3-5, a special-shaped wheel having a water passing structure positively
correlated with a full grinding surface includes a base 1; a grinding layer is attached
to an outer wall of the base 1, and an outer circumferential surface of the grinding
layer is a grinding surface 101; a water inlet is formed in a top surface of the base
1, and a connection hole for connecting an external device is formed in a bottom surface
of the base 1. The special-shaped wheel further includes a plurality of water passing
grooves 2; the plurality of water passing grooves 2 is densely formed around the base
1 by taking a central axis of the base 1 as an axis, communicates an inner side of
the base 1 with the grinding surface 101, and axially covers the entire grinding surface
101. That is, the axial height of an opening of the water passing groove 2 covers
the axial height of a grinded region of a machining workpiece 10, and the total length
of accumulated circumferences of the corresponding water passing grooves 2 at respective
axial grinding points of the grinding surface 101 is set in positive correlation with
the grinding area of the grinding point.
[0014] Specifically, the total length of accumulated circumferences of the corresponding
water passing grooves 2 at respective axial points of the grinding surface 101 is
n×Wi, wherein i refers to the grinding point on the grinding surface 101, n refers
to the number of water passing grooves 2, and Wi refers to an opening width of the
corresponding water passing groove 2 at the grinding point i.
[0015] The grinding area of the point i is set as S, such that the total length of accumulated
circumferences (n×Wi) is proportional to the grinding area S.
[0016] When the machining allowance gradually increases from an inner diameter to an outer
diameter, the opening of the water passing groove gradually widens from the inner
diameter to the outer diameter.
[0017] For different shapes of machining workpieces 10, the grinding area of each axial
point is different. As shown in FIG. 6, the grinding area S1 of the point A is greater
than the grinding area S2 of the point B. Since the larger grinding area requires
more water for cooling, the openings of the water passing grooves may be correspondingly
designed in different sizes according to different water consumptions. In FIG. 6,
as more water is required at the point A than the point B, the opening width W1 of
the water passing groove is correspondingly designed to be greater than W2. The total
length of accumulated circumferences (n×W) of water supply channels at respective
axial points of the grinding surface is set in positive correlation with the grinding
area (S) of the points.
[0018] Optionally, as an embodiment of the present invention, the total length of accumulated
circumferences of the corresponding water passing grooves 2 at respective axial points
of the grinding surface 101 is n×Wi, wherein i refers to the grinding point on the
grinding surface 101, n refers to the number of water passing grooves 2, and Wi refers
to an opening width of the corresponding water passing groove 2 at the grinding point
i.
[0019] In the above embodiment, the opening width of the corresponding water passing groove
2 increases at a position with the large machining allowance, thereby satisfying cooling
requirements.
[0020] Optionally, as an embodiment of the present invention, as shown in FIG. 7, the special-shaped
wheel further includes a base spiral water passing groove 3. The base spiral water
passing groove 3 is spirally formed around a middle portion of an inner wall of the
base 1, and recessed toward an inner side of the base 1.
[0021] In the above embodiment, when the special-shaped wheel is rotated, a part of water
axially rises under the action of the spiral groove to be supplied to a position with
a larger grinding (cutting) area.
[0022] Optionally, as an embodiment of the present invention, as shown in FIG. 4, the special-shaped
wheel further includes a cushion block 4 for connecting an external device. The cushion
block 4 is of an annular block-shaped structure with a connection hole in the center,
and the connection hole of the cushion block 4 is coaxial with a connection hole of
the base 1 and the cushion block is fixedly disposed inside the base 1.
[0023] Optionally, as an embodiment of the present invention, as shown in FIG. 7, the special-shaped
wheel further includes a cushion block spiral water passing groove 5. The cushion
block spiral water passing groove 5 is spirally formed around a middle portion of
an outer wall of the cushion block 4, and recessed toward an inner side of the cushion
block 4.
[0024] In the above embodiment, when the special-shaped wheel is rotated, a part of water
axially rises under the action of the spiral groove to be supplied to a position with
a larger grinding (cutting) area.
[0025] Optionally, as an embodiment of the present invention, as shown in FIGs. 8-10, the
special-shaped wheel further includes a water suction component. The water suction
component 6 is disposed between the cushion block 4 and the base 1, and located at
the water inlet of the base 1. The water suction component 6 includes an inner ring
601, an outer ring 602 and a plurality of water suction blades 603. The outer ring
602 sleeves the inner ring 601, and the water suction blades 603 are transversely
connected between the inner ring 601 and the outer ring 602 and circumferentially
distributed at intervals.
[0026] In the above embodiment, the water suction blades 603 can suck the cooling water
into the abrasive wheel to increase the water supply amount and support the abrasive
wheel.
[0027] Optionally, as an embodiment of the present invention, as shown in FIG. 11, a cushion
block annular groove 7 is formed in a position, which corresponds to the water suction
component 6, of the cushion block 4; a base annular groove 8 is disposed at a position,
which corresponds to the water suction component 6, of the base 1; and the inner ring
601 and the outer ring 602 are embedded in the cushion block annular groove 7 and
the base annular groove 8 respectively and fixedly connected into one piece.
[0028] For different shapes of machining workpieces 10, the grinding area of each axial
point is different. As shown in FIGs. 12-14, for example, arc-shaped water passing
grooves are formed around an arc wheel. Since machining allowances at positions close
to end surfaces of both ends of the arc wheel are greater than the machining allowance
in a middle portion thereof, openings close to the end surfaces of both ends of the
arc wheel are wider than the middle portion thereof. An arrow in FIG. 13 refers to
a flowing path of cooling water.
[0029] As shown in FIGs. 15-17, for example, arc-shaped water passing grooves are formed
around a small-diameter abrasive wheel. Since the machining allowance at a position
close to a lower end surface of the small-diameter abrasive wheel is greater than
machining allowances in a middle portion and at an upper end thereof, an opening of
a water passing groove close to the lower end surface of the small-diameter abrasive
wheel is wider than the middle portion and the upper end thereof, and the opening
of the water passing groove of the small-diameter abrasive wheel gradually widens
from the upper end to the lower end. An arrow in FIG. 17 refers to a flowing path
of cooling water.
[0030] In the present invention, feed water enters from the water inlet in the end surface
of the special-shaped wheel, and the water passing grooves are densely arranged in
the circumferential direction to cool the working surface. The water passing grooves
2 are axially formed in the full grinding surface of the special-shaped wheel to be
less affected by the airflow barrier, and densely arranged to facilitate forming the
internal cooling mode. The entire grinding surface of the special-shaped wheel can
be covered by the cooling water under the forward action of the centrifugal force.
The opening of the water passing groove 2 of each axial point is in positive correlation
with the machining allowance (i.e., the grinding area of the point), that is, the
larger the machining allowance, the larger the opening of the water passing groove
2. The technical problem in which the cooling water is difficult to be applied to
the full grinding surface in the overall one-time manufacturing is solved, thereby
greatly reducing the manufacturing cost.
[0031] The foregoing descriptions are merely preferred embodiments of the present invention,
and are not intended to limit the present invention. Within the spirit and principles
of the present invention, any modifications, equivalent substitutions, improvements,
and the like are within the protection scope of the present invention.
1. A special-shaped wheel having a water passing structure positively correlated with
a full grinding surface, comprising: a base (1), wherein a grinding layer is attached
to an outer wall of the base (1), an outer circumferential surface of the grinding
layer is a grinding surface (101), a water inlet is formed in a top surface of the
base (1), and a connection hole for connecting an external device is formed in a bottom
surface of the base (1); and the special-shaped wheel further comprises a plurality
of water passing grooves (2), wherein the plurality of water passing grooves (2) is
densely formed around the base (1) by taking a central axis of the base (1) as an
axis, communicates an inner side of the base (1) with the grinding surface (101),
and axially covers the entire grinding surface (101); and the total length of accumulated
circumferences of the corresponding water passing grooves (2) at respective axial
grinding points of the grinding surface (101) is set in positive correlation with
the grinding area of the grinding point.
2. The special-shaped wheel according to claim 1, wherein the total length of accumulated
circumferences of the corresponding water passing grooves (2) at respective axial
points of the grinding surface (101) is n×Wi, wherein i refers to the grinding point
on the grinding surface (101), n refers to the number of water passing grooves (2),
and Wi refers to an opening width of the corresponding water passing groove (2) at
the grinding point i.
3. The special-shaped wheel according to claim 1, further comprising: a base spiral water
passing groove (3), wherein the base spiral water passing groove (3) is spirally formed
around a middle portion of an inner wall of the base (1), and recessed toward an inner
side of the base (1).
4. The special-shaped wheel according to any one of claims 1 to 3, further comprising:
a cushion block (4) for connecting an external device, wherein the cushion block (4)
is of an annular block-shaped structure with a connection hole in the center, the
connection hole of the cushion block (4) is coaxial with a connection hole of the
base (1), and the cushion block (4) is fixedly disposed inside the base (1).
5. The special-shaped wheel according to claim 4, further comprising: a cushion block
spiral water passing groove (5), wherein the cushion block spiral water passing groove
(5) is spirally formed around a middle portion of an outer wall of the cushion block
(4), and recessed toward an inner side of the cushion block (4).
6. The special-shaped wheel according to claim 4, further comprising: a water suction
component, wherein the water suction component (6) is disposed between the cushion
block (4) and the base (1), and located at the water inlet of the base (1); the water
suction component (6) comprises an inner ring (601), an outer ring (602) and a plurality
of water suction blades (603); the outer ring (602) sleeves the inner ring (601),
and the water suction blades (603) are transversely connected between the inner ring
(601) and the outer ring (602) and circumferentially distributed at intervals.
7. The special-shaped wheel according to claim 6, wherein a cushion block annular groove
(7) is formed in a position, which corresponds to the water suction component (6),
of the cushion block (4); a base annular groove (8) is formed in a position, which
corresponds to the water suction component (6), of the base (1); and the inner ring
(601) and the outer ring (602) are embedded in the cushion block annular groove (7)
and the base annular groove (8) respectively and fixedly connected into one piece.