CN112917376A - Straight hole high finish grinds machine - Google Patents

Straight hole high finish grinds machine Download PDF

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Publication number
CN112917376A
CN112917376A CN202110098157.2A CN202110098157A CN112917376A CN 112917376 A CN112917376 A CN 112917376A CN 202110098157 A CN202110098157 A CN 202110098157A CN 112917376 A CN112917376 A CN 112917376A
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CN
China
Prior art keywords
grinding
section
ring
shaft
hole
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Granted
Application number
CN202110098157.2A
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Chinese (zh)
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CN112917376B (en
Inventor
党晓宏
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Qingdao Yifengsheng Mechanical Equipment Co ltd
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/34—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/14—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by liquid or gas pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses a grinding machine with a straight hole and an inner hole and high finish degree, and belongs to the field of machining. The device includes: a support; a grinding shaft, one end of which is provided with a grinding head for grinding the inner hole of the workpiece; the driving device comprises a power device and a driving ring, the driving ring is fixedly arranged on the support, and the grinding shaft at least comprises a grinding section, a lead screw section and a spline section; the driving ring is provided with a threaded hole matched with the screw rod section, and when the grinding shaft rotates, the driving ring drives the grinding shaft to move along the axial direction; the power device comprises a driving motor and a power ring, an internal spline matched with the spline section is arranged on the power ring, the driving motor is used for driving the power ring to rotate, and when the power ring rotates, the grinding shaft is driven to rotate. The invention realizes the synchronous operation of turnover grinding and feed grinding, and improves the grinding effect; the device has simple structure and low cost of single machine.

Description

Straight hole high finish grinds machine
Technical Field
The invention relates to the field of machining, in particular to a straight hole inner hole high-finish grinding machine.
Background
In the field of product processing, processing inner holes of products is a common processing mode. For some precision parts, the precision size and the surface roughness of the inner hole are all required to be higher. Usually, for external dimensions, such as the outer diameter of a rod or a component, which are easy to machine, dimensional accuracy can be effectively ensured by a grinding machine. However, for the inner hole, feeding is inconvenient to control, and the machining allowance is small, so that the product is unqualified easily due to the problems of improper feeding control, residual burrs after machining and the like during finish machining. The traditional equipment such as through hole grinding machine, hole burnishing machine, the unit is with high costs, and the operating efficiency is lower. To the accurate part of minor diameter, also require higher to the precision of grinding the axle, grind the axle and diminish in the back diameter of grinding, need often change the grinding axle so that can guarantee the machining dimension, lead to batch production cost on the high side, production efficiency is lower.
Disclosure of Invention
The invention provides a grinder for a straight hole inner hole with high finish, which can solve the problems of high processing cost and low processing efficiency in the prior art when the straight hole inner hole is polished.
A straight bore hole high finish grinding machine comprising:
a support;
a grinding shaft, one end of which is provided with a grinding head for grinding the inner hole of the workpiece;
the driving device comprises a power device and a driving ring, the driving ring is fixedly arranged on the support, and the grinding shaft at least comprises a grinding section, a screw rod section and a spline section; the driving ring is provided with a threaded hole matched with the screw rod section, and when the grinding shaft rotates, the driving ring drives the grinding shaft to move along the axial direction;
the power device comprises a driving motor and a power ring, an internal spline matched with the spline section is arranged on the power ring, the driving motor is used for driving the power ring to rotate, and when the power ring rotates, the grinding shaft is driven to rotate.
Preferably, the driving ring is rotatably disposed on the support, the output end of the driving motor is provided with a first gear, the driving ring is fixedly provided with a second gear, and the first gear is meshed with the second gear.
Preferably, the grinding section comprises an escape section, a through inspection section and a stop section, the diameter of the escape section is smaller than that of the inner hole of the workpiece, the outer diameter of the through inspection section is the upper limit value of the diameter of the inner hole of the workpiece, the outer diameter of the stop section is the lower limit value of the diameter of the inner hole of the workpiece, and the diameter of the escape section is smaller than that of the escape section.
Preferably, the grinding device further comprises a yielding spring, the grinding section comprises a yielding section and a passing detection sleeve, the passing detection sleeve comprises a passing detection section and a stopping section, the diameter of the yielding section is smaller than the diameter of an inner hole of a workpiece, the outer diameter of the passing detection section is the lower limit value of the diameter of the inner hole of the workpiece, the outer diameter of the stopping section is the upper limit value of the diameter of the inner hole of the workpiece, and the diameter of the yielding section is smaller than the diameter of the passing detection section;
the general inspection sleeve is slidably arranged on the grinding shaft, one end of the abdicating spring is fixedly connected to the general member sleeve, and the other end of the abdicating spring is fixedly connected to the grinding shaft.
Preferably, the grinding head includes supporting shoe, connecting rod, cushion and grinding bed, the supporting shoe passes through the connecting rod is connected to the one end of grinding axle, an inlet port has been seted up in the grinding axle, the inlet port has an intake pipe along the end external of the advancing direction of polishing, the cushion is the loop configuration, its both ends respectively sealing connection to grind axle with the supporting shoe, the outside cladding of cushion has the grinding bed, when aerifing in the inlet port, the cushion drives the grinding bed is followed the radial outside arch of grinding axle.
Preferably, the supporting block is provided with a pressure relief hole, and the axis of the pressure relief hole coincides with the axis of the grinding shaft.
Preferably, the grinding head is a grinding ring, the grinding ring comprises a ring body, a support shaft and a rotating blade, an air inlet hole is formed in the grinding shaft, an air inlet pipe is externally connected to the tail end of the air inlet hole in the forward direction of grinding, and the front end of the air inlet hole is of a hollow structure and used for enabling air to flow out; the rotating blade is positioned in the air inlet, the ring body is positioned on the outer side of the grinding shaft, the supporting shaft is rotatably arranged at the front end of the grinding shaft, the rotating blade is fixedly arranged at one end of the supporting shaft positioned in the air inlet, and the ring body is fixedly arranged at one end of the supporting shaft positioned on the outer side of the grinding shaft;
an inflation cavity is formed in the ring body, the cross section of the ring body is of a C-shaped structure, the ring body is provided with an opening end and a bottom wall opposite to the opening end, the opening end faces the grinding shaft, a discharge hole is formed in the bottom wall, and the area of the projection of the discharge hole in the axial direction of the grinding shaft is smaller than the area of the projection of the opening end in the axial direction of the grinding shaft;
the periphery of the ring body is hermetically coated with an annular elastic pad, one side of the elastic pad, which is far away from the ring body, is fixedly provided with a grinding layer, and when the air inlet is filled with air, the elastic pad drives the grinding layer to bulge outwards along the radial direction of the ring body;
when the air inlet is filled with air, the rotating blades drive the ring body to rotate under the action of airflow.
The invention provides a straight hole inner hole high-finish grinding machine, which drives a grinding shaft to rotate through a power device, the grinding shaft is driven to move forwards through a driving ring in the rotation process of the grinding shaft, and the grinding shaft continuously rotates in the forward movement process, so that the synchronous operation of turnover grinding and feed grinding is realized, and the grinding effect is improved; the device has simple structure and low single machine cost, does not need complex control process, only needs to clamp the workpiece, and can effectively improve the processing efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a straight-hole inner-hole high-finish grinding machine provided by the invention;
FIG. 2 is a schematic view of a grinding spindle;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of the first embodiment of FIG. 3;
FIG. 5 is a cross-sectional view A-A of the second embodiment of FIG. 3;
FIG. 6 is a partial enlarged view of FIG. 5 at B;
FIG. 7 is a schematic diagram of the structure of the test section of FIG. 2;
FIG. 8 is a cross-sectional view (in part) A-A of the third embodiment of FIG. 3;
FIG. 9 is an enlarged view of a portion of FIG. 8 at C;
FIG. 10 is an enlarged view of a portion of FIG. 9 at D;
fig. 11 is a schematic structural view of the inspection sleeve and the grinding shaft.
Description of reference numerals:
00. the grinding device comprises a support, 10, a grinding shaft, 101, a screw rod section, 102, a spline section, 103, a grinding section, 1031, a grinding head, 104, an air inlet hole, 105, a connecting rod, 106, a grinding layer, 107, an elastic pad, 1081, a yield section, 1082, a through detection section, 1083, a stop section, 1084, a yield spring, 109, a pressure relief hole, 11, a driving ring, 12, a supporting block, 20, a driving motor, 21, a first gear, 22, a second gear, 23, a power ring, 30, an air inlet pipe, 40, a grinding ring, 401, a ring body, 402, a drainage hole, 403, an inflation cavity, 41, a supporting shaft, 42 and a rotating blade.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
The first embodiment is as follows:
as shown in fig. 1 to 4, an embodiment of the present invention provides a straight-hole inner-hole high-finish grinding machine, including: a support 00; a grinding shaft 10 having a grinding head 1031 at one end thereof for grinding an inner hole of a workpiece; the grinding device comprises a driving device and a driving ring 11, wherein the driving ring 11 is fixedly arranged on a support 00, as shown in fig. 2, the grinding shaft 10 at least comprises a grinding section 103, a screw section 101 and a spline section 102 which are sequentially arranged, and the screw section 101 is a driving screw; a threaded hole matched with the screw rod section 101 is formed in the driving ring 11, and when the grinding shaft 10 rotates, the driving ring 11 drives the grinding shaft 10 to move axially;
the power device comprises a driving motor 20 and a power ring 23, an inner spline matched with the spline section 102 is arranged on the power ring 23, an outer spline is arranged on the spline section 102 and matched with the inner spline, the power ring 23 can drive the grinding shaft 10 to rotate when rotating, the movement of the grinding shaft 10 can not influence the spline driving, and the driving motor 20 is used for driving the power ring 23 to rotate.
Specifically, the driving ring 11 is rotatably disposed on the support 00, the output end of the driving motor 20 is provided with a first gear 21, the driving ring 11 is fixedly provided with a second gear 22, and the first gear 21 is meshed with the second gear 22.
During operation, the motor drives the first gear 21 to rotate, the first gear 21 and the second gear 22 are meshed to drive the second gear 22 to rotate, the second gear 22 drives the driving ring 11 to rotate, the driving ring 11 drives the spline section 102 to rotate when rotating, the spline section 102 enables the grinding shaft 10 to rotate, and the grinding shaft 10 is matched with the threaded hole through the screw rod section 101 when rotating, so that axial movement along the grinding shaft 10 is realized. Thereby, the rotation and axial movement of the grinding shaft 10 are realized, and the grinding in the revolving direction and the feeding in the axial direction and the axial grinding are performed to the content.
Example two:
on the basis of the first embodiment, during grinding, the machining allowance is small, the requirement on dimensional accuracy is high, frequent inspection is required after grinding, and machining and inspection efficiency is reduced, as shown in fig. 7, the grinding section 103 includes a yield section 1081, a pass-inspection section 1082 and a stop-pass section 1083, the diameter of the yield section 1081 is smaller than the diameter of the inner hole of the workpiece, the outer diameter of the pass-inspection section 1082 is the lower limit value of the diameter of the inner hole of the workpiece, the outer diameter of the stop-pass section 1083 is the upper limit value of the diameter of the inner hole of the workpiece, and the diameter of the yield section 1081 is smaller than the diameter of the yield section 1081. In the grinding process, if the grinding size exceeds the general inspection section 1082, the general inspection section 1082 can enter, and the size of the inner hole meets the requirement of a lower limit value; the grinding size is smaller than the stop-through section 1083, and the stop-through section 1083 cannot enter, so that the size of the inner hole meets the requirement of an upper limit value, and the grinding size and the stop-through section meet the requirement at the same time, so that the size is qualified. Thus, detection can be achieved without shutdown.
In another embodiment, as shown in fig. 11, the polishing device further includes a yielding spring 1084, the polishing section 103 includes a yielding section 1081 and a pass-through detection sleeve, the pass-through detection sleeve includes a pass-through detection section 1082 and a stop-through section 1083, the diameter of the yielding section 1081 is smaller than the diameter of the inner hole of the workpiece, the outer diameter of the pass-through detection section 1082 is the lower limit value of the diameter of the inner hole of the workpiece, the outer diameter of the stop-through section 1083 is the upper limit value of the diameter of the inner hole of the workpiece, and the diameter of the yielding section 1081 is smaller than the diameter of the pass-; the general inspection sleeve is slidably arranged on the grinding shaft 10, one end of the abdicating spring 1084 is fixedly connected to the general inspection sleeve, and the other end is fixedly connected to the grinding shaft 10.
In operation, as the grinding continues, when the grinding shaft 10 moves axially, the pass-through inspection section 1082 can pass through and the pass-through stop section 1083 cannot pass through, the machining is qualified. When the workpiece is not machined in place, only the motor needs to be controlled to rotate reversely, and reciprocating grinding is achieved. In order to avoid the damage caused by the collision of the through stopping section 1083 and/or the through checking section 1082 against the orifice, in the above scheme, the through checking sleeve is slidably arranged on the grinding shaft 10 and is connected to the grinding shaft 10 through a spring, so that the through checking sleeve can form a yielding position when touching the orifice, an operator can have enough observation time, and the orifice is prevented from being damaged.
Example three:
in the first or second embodiment, since the polishing head 1031 with a fixed size is used for a plurality of times, the outer diameter of the polishing head 1031 becomes smaller, thereby resulting in a smaller bore diameter, requiring frequent replacement of the polishing head 1031, resulting in higher processing cost, therefore, in the present embodiment, as shown in fig. 5 and 6, the polishing head 1031 includes a supporting block 12, a connecting rod 105, an elastic pad 107 and a polishing layer 106, the supporting block 12 is connected to one end of the polishing shaft 10 through the connecting rod 105, an air inlet hole 104 is formed in the polishing shaft 10, an air inlet pipe 30 is externally connected to the end of the air inlet hole 104 along the forward polishing direction, as shown in fig. 6, the elastic pad 107 is in a ring structure, the two ends of the elastic pad 107 are respectively connected to the grinding shaft 10 and the supporting block 12 in a sealing manner, the outer side of the elastic pad 107 is coated with the grinding layer 106, and when the air inlet hole 104 is filled with air, the elastic pad 107 drives the grinding layer 106 to protrude outwards along the radial direction of the grinding shaft 10.
During grinding, air is introduced through the air inlet holes 104, and the air is filled in the air inlet holes 104, so that the elastic pad 107 is pressed by air pressure to be protruded outwards to be pressed on the surface of the inner hole, and grinding is realized. Because the elastic margin of the elastic pad 107 is large, the elastic pad can deform through air pressure, so that the grinding layer 106 which becomes thinner gradually can be effectively compensated, the replacement frequency of the grinding head 1031 can be effectively reduced, although the deformation of the elastic pad 107 is uncontrollable, the detection without stopping can be realized by combining with the universal detection sleeve, and the processing efficiency can be improved under the condition of having a large compensation margin.
In the embodiment, as shown in fig. 5, a pressure relief hole 109 is formed in the support block 12, and the axis of the pressure relief hole 109 coincides with the axis of the grinding shaft 10. The aperture of the pressure relief hole 109 is smaller than that of the intake hole 104. Therefore, although the pressure relief hole 109 causes the air flow to flow out, the air pressure in the air inlet hole 104 can still be kept high due to the small aperture of the pressure relief hole 109, so that the elastic pad 107 can effectively compensate.
Example four:
in another embodiment, as shown in fig. 8 and 9, the polishing head 1031 is a polishing ring 40, the polishing ring 40 includes a ring body 401, a supporting shaft 41 and a rotating blade 42, a gas inlet hole 104 is formed in the grinding shaft 10, an air inlet pipe 30 is externally connected to the end of the gas inlet hole 104 along the forward polishing direction, and the front end of the gas inlet hole 104 is a hollow structure for allowing the gas to flow out; the rotating blade 42 is positioned in the air inlet hole 104, the ring body 401 is positioned outside the grinding shaft 10, the support shaft 41 is rotatably arranged at the front end of the grinding shaft 10, the rotating blade 42 is fixedly arranged at one end of the support shaft 41 positioned in the air inlet hole 104, and the ring body 401 is fixedly arranged at one end of the support shaft 41 positioned outside the grinding shaft 10;
an inflation cavity 403 is formed in the ring body 401, the cross section of the ring body 401 is of a C-shaped structure, the ring body 401 is provided with an opening end and a bottom wall opposite to the opening end, the opening end faces the grinding shaft 10, a discharge hole 402 is formed in the bottom wall, and the area of the projection of the discharge hole 402 in the axial direction of the grinding shaft 10 is smaller than the area of the projection of the opening end in the axial direction of the grinding shaft 10, so that high pressure can be effectively formed in the inflation cavity 403;
the circumferential side of the ring body 401 is hermetically coated with an annular elastic pad 107, one side of the elastic pad 107, which is far away from the ring body 401, is fixedly provided with a grinding layer 106, and when the air inlet holes 104 are inflated, the elastic pad 107 drives the grinding layer 106 to protrude outwards along the radial direction of the ring body 401;
when the air inlet holes 104 are inflated, the rotating blades 42 drive the ring body 401 to rotate under the action of the air flow.
During operation, aerify through intake pipe 30, the air current passes through inlet port 104, the fretwork position that sees through inlet port 104 front end gets into aerifys chamber 403, because the projected area of discharge orifice 402 is less than the area of ring body 401 open end, therefore the air input of air current is greater than the air output, thereby make and form atmospheric pressure in aerifing the chamber 403, force cushion 107 to warp, drive wearing layer 106 and contradict on the lateral wall of hole, and the air current flow in-process, can drive the blade and rotate, the blade rotates and drives ring body 401 and rotate and then drive wearing layer 106, because grinding axle 10 itself has a rotational speed, the rotational speed of wearing layer 106 is grinding axle 10's rotational speed plus ring body 401's rotational speed, thereby realize high-speed grinding, and the efficiency of grinding and effect are improved.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims (7)

1. A straight hole inner hole high finish grinding machine is characterized by comprising:
a support;
a grinding shaft, one end of which is provided with a grinding head for grinding the inner hole of the workpiece;
the driving device comprises a power device and a driving ring, the driving ring is fixedly arranged on the support, and the grinding shaft at least comprises a grinding section, a screw rod section and a spline section; the driving ring is provided with a threaded hole matched with the screw rod section, and when the grinding shaft rotates, the driving ring drives the grinding shaft to move along the axial direction;
the power device comprises a driving motor and a power ring, an internal spline matched with the spline section is arranged on the power ring, the driving motor is used for driving the power ring to rotate, and when the power ring rotates, the grinding shaft is driven to rotate.
2. The grinder of claim 1, wherein the driving ring is rotatably disposed on the support, the output end of the driving motor is provided with a first gear, the driving ring is fixedly provided with a second gear, and the first gear is meshed with the second gear.
3. The grinder of claim 1, wherein the grinding section comprises a relief section, a pass-through section and a stop section, the relief section has a diameter smaller than the diameter of the inner hole of the workpiece, the pass-through section has an outer diameter of a lower limit value of the diameter of the inner hole of the workpiece, the stop section has an outer diameter of an upper limit value of the diameter of the inner hole of the workpiece, and the relief section has a diameter smaller than the diameter of the relief section.
4. The grinder for the straight hole inner hole with the high finish degree of the claim 1 is characterized by further comprising a yielding spring, wherein the grinding section comprises a yielding section and a passing detection sleeve, the passing detection sleeve comprises a passing detection section and a stopping passage section, the diameter of the yielding section is smaller than the diameter of the inner hole of the workpiece, the outer diameter of the passing detection section is the upper limit value of the diameter of the inner hole of the workpiece, the outer diameter of the stopping passage section is the lower limit value of the diameter of the inner hole of the workpiece, and the diameter of the yielding section is smaller than the diameter of the passing detection section;
the general inspection sleeve is slidably arranged on the grinding shaft, one end of the abdicating spring is fixedly connected to the general member sleeve, and the other end of the abdicating spring is fixedly connected to the grinding shaft.
5. The grinder of claim 1, wherein the grinding head comprises a support block, a connecting rod, an elastic pad and a grinding layer, the support block is connected to one end of the grinding shaft through the connecting rod, an air inlet hole is formed in the grinding shaft, an air inlet pipe is externally connected to an end of the air inlet hole in a forward direction of grinding, the elastic pad is of an annular structure, two ends of the elastic pad are respectively connected to the grinding shaft and the support block in a sealing manner, the grinding layer is wrapped outside the elastic pad, and when the air inlet hole is inflated, the elastic pad drives the grinding layer to protrude outwards in a radial direction of the grinding shaft.
6. The grinder for grinding straight holes and inner holes with high finish of claim 1, wherein the supporting block is provided with a pressure relief hole, and the axis of the pressure relief hole is coincident with the axis of the grinding shaft.
7. The grinder for straight holes and inner holes with high finish according to claim 1, wherein the grinding head is a grinding ring, the grinding ring comprises a ring body, a supporting shaft and rotating blades, an air inlet hole is formed in the grinding shaft, an air inlet pipe is externally connected to the tail end of the air inlet hole along the forward direction of grinding, and the front end of the air inlet hole is of a hollow structure and is used for enabling air to flow out; the rotating blade is positioned in the air inlet, the ring body is positioned on the outer side of the grinding shaft, the supporting shaft is rotatably arranged at the front end of the grinding shaft, the rotating blade is fixedly arranged at one end of the supporting shaft positioned in the air inlet, and the ring body is fixedly arranged at one end of the supporting shaft positioned on the outer side of the grinding shaft;
an inflation cavity is formed in the ring body, the cross section of the ring body is of a C-shaped structure, the ring body is provided with an opening end and a bottom wall opposite to the opening end, the opening end faces the grinding shaft, a discharge hole is formed in the bottom wall, and the area of the projection of the discharge hole in the axial direction of the grinding shaft is smaller than the area of the projection of the opening end in the axial direction of the grinding shaft;
the periphery of the ring body is hermetically coated with an annular elastic pad, one side of the elastic pad, which is far away from the ring body, is fixedly provided with a grinding layer, and when the air inlet is filled with air, the elastic pad drives the grinding layer to bulge outwards along the radial direction of the ring body;
when the air inlet is filled with air, the rotating blades drive the ring body to rotate under the action of airflow.
CN202110098157.2A 2021-01-25 2021-01-25 Straight hole high finish grinds machine Active CN112917376B (en)

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CN110480447A (en) * 2019-08-16 2019-11-22 安徽省恒昌刷业有限公司 A kind of fine grinding device of Steel wire roll brush straight pipe inner wall deburring
CN110744427A (en) * 2019-10-29 2020-02-04 李洁洁 Polishing mechanism for inner container of reaction kettle
CN111070102A (en) * 2020-01-06 2020-04-28 三门秋兰喷涂机科技有限公司 Circular tube plastic spraying device
CN210650139U (en) * 2019-10-18 2020-06-02 天津赛瑞晟文科技有限公司 Taper hole grinding device
CN111230653A (en) * 2020-02-03 2020-06-05 天津大学 Novel wheeled gasbag polishing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100233947A1 (en) * 2009-03-16 2010-09-16 Honda Motor Co., Ltd. Inner surface grinding tool
CN104827381A (en) * 2015-05-25 2015-08-12 鹰普航空零部件（无锡）有限公司 Automatic multiple-shaft grinding machine
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