CN112894611B - Synchronous grinding machine for stepped bidirectional inner hole - Google Patents
Synchronous grinding machine for stepped bidirectional inner hole Download PDFInfo
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- CN112894611B CN112894611B CN202110098007.1A CN202110098007A CN112894611B CN 112894611 B CN112894611 B CN 112894611B CN 202110098007 A CN202110098007 A CN 202110098007A CN 112894611 B CN112894611 B CN 112894611B
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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
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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
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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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
- B24B37/27—Work carriers
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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
- B24B37/34—Accessories
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a synchronous grinding machine for a stepped bidirectional inner hole, and belongs to the field of machining. The grinding machine comprises: the base is provided with a guide chute; the first grinding shaft, the second grinding shaft and the driving device comprise electric telescopic rods, driving blocks, first connecting rods, second connecting rods and sliding blocks; when the electric telescopic rod acts, the first grinding shaft and the second grinding shaft are driven to act synchronously through the driving block; the stair removing device comprises a first processor, a first wireless transceiving module, a first feeding telescopic rod, a second processor, a second wireless transceiving module and a second feeding telescopic rod; a first containing chamber is formed in the first grinding shaft, and a second containing chamber is formed in the second grinding shaft; the first feeding telescopic rod is fixedly arranged in the first accommodating chamber; the second feeding telescopic rod is fixedly arranged in the second containing chamber. The invention can polish the junction and remove small steps or intersection marks at the junction.
Description
Technical Field
The invention relates to the field of machining, in particular to a synchronous grinding machine for a stepped bidirectional inner hole.
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. In general, for external dimensions such as the outer diameter of a rod or a component to be easily machined, 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.
As shown in fig. 1, for some pipe-type components, which have both straight-section inner holes and arc-section inner holes (such as communicating pipes), when polishing the inner holes, the straight-section inner holes and the arc-section inner holes generally need to be separately polished twice because of different extension tracks, resulting in lower processing efficiency; in addition, because arc hole and straight section hole separately polished during, both polished juncture can cause this juncture to appear little step and/or handing-over mark because of the difference of both sides polishing time, grinding degree etc. leads to the precision variation of whole part.
Disclosure of Invention
The invention provides a synchronous grinding machine for a stepped bidirectional inner hole, which can solve the problems that in the prior art, when parts which are provided with a straight section inner hole and an arc section inner hole are processed, the processing efficiency is low, and a small step and/or a joint mark can be generated at the junction of the arc inner hole and the straight section inner hole.
A synchronous grinder for stepped bidirectional inner holes comprises:
the base is provided with a guide sliding chute, and the extending track of the guide sliding chute is a standard arc section;
the driving device comprises an electric telescopic rod, a driving block, a first connecting rod, a second connecting rod and a sliding block, the driving block is fixedly connected to the output end of the electric telescopic rod, the electric telescopic rod is used for driving the driving block to move, one end of the first connecting rod is fixedly connected to the driving block, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the sliding block, and the sliding block is slidably arranged in the guide sliding groove;
one end of the first grinding shaft is fixedly arranged on the driving block, and the other end of the first grinding shaft is provided with a first grinding head for grinding a straight inner hole part of a workpiece;
one end of the second grinding shaft is fixedly connected to the sliding block, a second grinding head is arranged at the other end of the second grinding shaft, the second grinding shaft is of an arc-shaped structure, the radian of the second grinding shaft is the same as that of the guide sliding groove, and the second grinding head is used for grinding an arc-shaped inner hole part of a workpiece; when the sliding block moves, the second grinding shaft is driven to slide along the extending direction of the guide sliding chute; one end of the straight inner hole is communicated and tangent with one end of the arc-shaped inner hole;
when the electric telescopic rod acts, the first grinding shaft and the second grinding shaft are driven to act synchronously through the driving block; and the number of the first and second groups,
the stair removing device comprises a first processor, a first wireless transceiving module, a first feeding telescopic rod, a second processor, a second wireless transceiving module and a second feeding telescopic rod, wherein the first feeding telescopic rod and the first wireless transceiving module are both in signal connection with the first processor, and the second feeding telescopic rod and the second wireless transceiving module are both in signal connection with the second processor;
a first containing chamber is formed in the first grinding shaft, and a second containing chamber is formed in the second grinding shaft;
the first feeding telescopic rod is fixedly arranged in the first accommodating chamber, and the first grinding head is arranged at the output end of the first feeding telescopic rod; the second feeding telescopic rod is fixedly arranged in the second accommodating chamber, and the second grinding head is arranged at the output end of the second feeding telescopic rod;
the first and second abrading heads having at least first and second operating states:
when the first working state is achieved, the first feeding telescopic rod extends, and the first grinding head is located in the straight inner hole; the second feeding extension rod is shortened, and the second grinding head is positioned in the arc-shaped inner hole;
when the first working state is reached, the first feeding telescopic rod is retracted, the first grinding head is located in the straight inner hole, the second feeding telescopic rod is extended, and the second grinding head is located in the straight inner hole.
More preferably, the grinder further comprises a first and a second abdicating spring;
the first grinding shaft comprises a first rod body and a first general detection sleeve, the shape of the first general detection sleeve is matched with that of the first rod body, the second grinding shaft comprises a second rod body and a second general detection sleeve, and the shape of the second general detection sleeve is matched with that of the second rod body;
the first general detection sleeve comprises a first general detection section and a first stop section, the diameter of the rod body is smaller than that of a straight inner hole of a workpiece, the outer diameter of the first general detection section is the lower limit value of the diameter of the straight inner hole of the workpiece, the outer diameter of the first stop section is the upper limit value of the diameter of the straight inner hole of the workpiece, and the diameter of the first rod body is smaller than that of the first general detection section; the first general detection sleeve is slidably sleeved on the first rod body, one end of the first abdicating spring is fixedly connected to the first general detection sleeve, and the other end of the first abdicating spring is fixedly connected to the first grinding shaft;
the second general inspection sleeve comprises a second general inspection section and a second open-stop section, the diameter of the second rod body is smaller than the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second general inspection section is the lower limit value of the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second open-stop section is the upper limit value of the diameter of the arc-shaped inner hole of the workpiece, and the diameter of the second rod body is smaller than the diameter of the second general inspection section; the second general detection sleeve is slidably sleeved on the second rod body, one end of the second abdicating spring is fixedly connected to the second general detection sleeve, and the other end of the second abdicating spring is fixedly connected to the second grinding shaft.
Preferably, each of the first polishing head and the second polishing head comprises a first support block, a second support block, a connecting rod, an elastic pad and a polishing layer, and the first support block and the second support block are connected through the connecting rod; the output end of the first feeding telescopic rod is fixedly connected to a first supporting block or a second supporting block in the first grinding head, and the output end of the second feeding telescopic rod is fixedly connected to a first supporting block or a second supporting block in the second grinding head; a first air inlet hole is formed in the first grinding shaft, a second air inlet hole is formed in the second grinding shaft, and the first feeding telescopic rod and the second feeding telescopic rod are fixedly arranged in the first air inlet hole and the second air inlet hole respectively; the driving block is provided with a first communicating hole which is communicated with the first air inlet; a second communication hole is formed in the sliding block and penetrates into the second air inlet hole; the first communicating hole and the second communicating hole are externally connected with air inlet pipes;
the elastic cushion is of an annular structure, two ends of the elastic cushion are respectively connected to the first supporting block and the second supporting block in a sealing mode, the grinding layer is wrapped on the outer side of the elastic cushion, and when the first air inlet hole and/or the second air inlet hole are/is inflated, the elastic cushion drives the grinding layer to protrude outwards along the radial direction of the first grinding shaft and/or the second grinding shaft.
Preferably, the first supporting block and the second supporting block are both provided with a pressure relief hole, and the axis of the pressure relief hole coincides with the axis of the first grinding shaft and/or the axis of the second grinding shaft.
Preferably, the first grinding head and the second grinding head are both grinding rings, each grinding ring comprises a ring body, a support shaft and a rotating blade, a first air inlet hole and a second air inlet hole are respectively formed in the first grinding shaft and the second grinding shaft, and the first feeding telescopic rod and the second feeding telescopic rod are respectively and fixedly arranged in the first air inlet hole and the second air inlet hole; the driving block is provided with a first communicating hole which is communicated with the first air inlet; a second communication hole is formed in the sliding block and penetrates into the second air inlet hole; the front ends of the first air inlet hole and the second air inlet hole are both hollow structures and are used for enabling air to flow out; the rotating blade is positioned in the first air inlet hole or the second air inlet hole, the ring body is positioned outside the first grinding shaft or the second grinding shaft, the supporting shaft is rotatably arranged at the front end of the first grinding shaft or the second grinding shaft, the rotating blade is fixedly installed at one end of the supporting shaft positioned in the first air inlet hole or the second air inlet hole, and the ring body is fixedly installed at one end of the supporting shaft positioned outside the first grinding shaft or the second grinding shaft;
the end part of the support shaft, which is positioned in the first air inlet hole or the second air inlet hole, is provided with a T-shaped sliding block; the output ends of the first feeding telescopic rod and the second feeding telescopic rod are respectively provided with a T-shaped sliding groove matched with the T-shaped sliding block, and the T-shaped sliding block of the supporting shaft in the first grinding head is rotatably arranged in the T-shaped sliding groove on the first feeding telescopic rod; the T-shaped sliding block of the supporting shaft in the second grinding head is rotatably arranged in a T-shaped sliding groove on the second feeding telescopic rod;
the ring body is provided with an opening end and a bottom wall opposite to the opening end, the opening end faces the first grinding shaft or the second grinding shaft, the bottom wall is provided with a drain hole, and the area of the projection of the drain hole along the axial direction of the first grinding shaft or the second grinding shaft is smaller than the area of the projection of the opening end along the axial direction of the first grinding shaft or the second 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 synchronous grinding machine for a stepped bidirectional inner hole, which drives a driving block through a single power source, the driving block synchronously drives a first grinding shaft and a second grinding shaft to move, the first grinding shaft polishes the inner hole of a straight section, and the second grinding shaft polishes the inner hole of an arc section, so that the synchronous polishing of the straight section and the arc section is realized, the grinding machine has a simple structure, a complex control system is not needed, and the processing efficiency is high; the first grinding head and the second grinding head are driven to respectively extend or shorten by utilizing the first feeding telescopic rod and the second feeding telescopic rod, after the first grinding head and the second grinding head respectively finish grinding the straight section inner hole and the arc-shaped inner hole, the first grinding head retracts, the second grinding head extends, and the second grinding head is driven to enter the straight section inner hole, so that the junction is ground, and small steps or intersection marks of the junction are removed.
Drawings
FIG. 1 is a schematic view of a structure of a part to be processed in the present invention;
FIG. 2 is a schematic structural view of a stepped bidirectional inner hole synchronous grinder according to the present invention;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a schematic diagram of a first grinding spindle in one embodiment;
FIG. 5 is a schematic view of a first grinding spindle according to another embodiment;
FIG. 6 is a schematic structural view of a second grinding shaft in another embodiment;
FIG. 7 is a schematic diagram of a first polishing head in one embodiment;
FIG. 8 is an enlarged view of a portion A of FIG. 7;
FIG. 9 is a schematic diagram of a second polishing head in one embodiment;
FIG. 10 is an enlarged view of a portion of FIG. 9 at B;
FIG. 11 is a schematic view of a first polishing head according to another embodiment;
FIG. 12 is an enlarged view of a portion of FIG. 11 at C;
FIG. 13 is a schematic diagram of a system for a stepped bidirectional bore synchronous grinding machine according to the present invention;
fig. 14 is a schematic diagram of a system of a stepped bidirectional inner hole synchronous grinder provided by the invention.
Description of reference numerals:
10 a first grinding shaft; 101 a first polishing head; 102 a first rod body; 103 a first general detection section; 104 a first stop-pass section; 105 a first abdicating spring; 106 a connecting rod; 107 a polishing layer; 108 an elastic pad; 109 a first intake hole; 110 pressure relief holes; 11 a supporting block; 20, an electric telescopic rod; 21 a drive block; 211 a first via hole; 22 a first link; 23 a second link; 24 sliding blocks; 241 a second communication hole; 30 a second grinding shaft; 301 a second polishing head; 302 a second shaft body; 303 a second pass detection section; 304 a second stop-pass section; 305 a second yield spring; 306 a second air intake; 40 grinding ring; 401 a ring body; 402 a drain hole; 403 inflating the chamber; 41 supporting the shaft; 42 rotating the blade; 50 a base; 51 a guide chute; 60 a first feed telescoping rod; 61 a first wireless transceiver module; 70 a second feeding telescopic rod; 71 second radio transceiver module.
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, the part to be processed comprises a straight section inner hole and an arc section inner hole, one end of the arc section inner hole is communicated with one end of the straight section inner hole, and the arc inner hole is tangent to the straight inner hole.
As shown in fig. 2 and 3, the stepped bidirectional inner hole synchronous grinding machine provided by the embodiment of the invention comprises:
a base 50, on which a guide chute 51 is provided, wherein the extending track of the guide chute 51 is a standard arc segment;
the driving device comprises an electric telescopic rod 20, a driving block 21, a first connecting rod 22, a second connecting rod 23 and a sliding block 24, wherein the driving block 21 is fixedly connected to the output end of the electric telescopic rod 20, the electric telescopic rod 20 is used for driving the driving block 21 to move, one end of the first connecting rod 22 is fixedly connected to the driving block 21, the other end of the first connecting rod 22 is hinged to one end of the second connecting rod 23, the other end of the second connecting rod 23 is hinged to the sliding block 24, and the sliding block 24 is slidably arranged in the guide sliding groove 51;
one end of the first grinding shaft 10 is fixedly arranged on the driving block 21, and the other end of the first grinding shaft 10 is provided with a first grinding head 101 for grinding a straight inner hole part of a workpiece;
one end of the second grinding shaft 30 is fixedly connected to the sliding block 24, the other end of the second grinding shaft 30 is provided with a second grinding head 301, the second grinding shaft 30 is of an arc-shaped structure, the radian of the second grinding shaft is the same as that of the guide sliding groove 51, and the second grinding head 301 is used for grinding an arc-shaped inner hole part of a workpiece; when the slide block 24 moves, the second grinding shaft 30 is driven to slide along the extending direction of the guide sliding chute 51; one end of the straight inner hole is communicated and tangent with one end of the arc-shaped inner hole;
when the electric telescopic rod 20 acts, the driving block 21 drives the first grinding shaft 10 and the second grinding shaft 30 to act synchronously; and (c) a second step of,
the stair removing device comprises a first processor, a first wireless transceiver module 61, a first feeding telescopic rod 60, a second processor, a second wireless transceiver module 71 and a second feeding telescopic rod 70, wherein the first feeding telescopic rod 60 and the first wireless transceiver module 61 are in signal connection with the first processor, and the second feeding telescopic rod 70 and the second wireless transceiver module 71 are in signal connection with the second processor;
a first containing chamber is formed in the first grinding shaft 10, and a second containing chamber is formed in the second grinding shaft 30;
the first feeding telescopic rod 60 is fixedly arranged in the first accommodating chamber, and the first grinding head 101 is arranged at the output end of the first feeding telescopic rod 60; the second telescopic feeding rod 70 is fixedly arranged in the second accommodating chamber, the second grinding head 301 is arranged at the output end of the second telescopic feeding rod 70, and when the second telescopic feeding rod 70 is extended, the second grinding head 301 is driven to extend along the tangential direction of the second grinding shaft 30;
the first polishing head 101 and the second polishing head 301 have at least a first operating state and a second operating state:
when in the first working state, the first telescopic feeding rod 60 is extended, and the first grinding head 101 is positioned in the straight inner hole; the second feeding extension rod is shortened, and the second grinding head 301 is positioned in the arc-shaped inner hole;
when in the second working state, the first telescopic feeding rod 60 is shortened, the first polishing head 101 is positioned in the straight inner hole, the second telescopic feeding rod 70 is extended, and the second polishing head 301 is positioned in the straight inner hole.
When the grinding device works, a workpiece is fixed, so that the axis of the inner hole of the straight section is overlapped with the axis of the first grinding shaft 10, and the axis of the inner hole of the arc-shaped section and the axis of the second grinding shaft 30 are positioned on the same arc. When the electric telescopic rod 20 is started, the electric telescopic rod 20 drives the driving block 21 to move, the driving block 21 drives the first grinding shaft 10 to move, the first grinding shaft moves towards the inner hole of the straight section and grinds the inner hole, meanwhile, the driving block 21 drives the second connecting rod 23 to move through the first connecting rod 22, the second connecting rod 23 drives the sliding block 24 to move, and the sliding block 24 can only slide in the guide sliding groove 51, so that the sliding block 24 can slide along the track of the guide sliding groove 51, and further the second grinding shaft 30 is driven to move along the axial direction of the inner hole of the arc-shaped section and grinds the inner hole, when the ends of the first grinding head 101 and the second grinding head 301 are overlapped (at the moment, the electric telescopic rod 20 reaches the maximum stroke), a signal is sent to the first wireless transceiver module 61 and the second wireless transceiver module 71 through an external controller, the first wireless transceiver module 61 and the second wireless transceiver module 71 receive the signal and respectively send the signal to the first processor and the second processor, the first processor controls the first feeding telescopic rod 60 to retract, the first grinding head 101 is driven to retract, the second processor controls the second feeding rod 70 to extend, the second feeding rod 70, and the second grinding head is extended into the intersection of the straight section, and the grinding head is extended along the same direction as the straight section, so that the grinding head 301 is extended straight section. This grinds machine has realized adopting single power supply through above-mentioned structure, carries out the synchronous of straight section hole and segmental arc hole simultaneously and polishes, need not complicated control system, has guaranteed synchronous precision, has carried out the processing of polishing to the handing-over trace of juncture simultaneously, avoids appearing step and handing-over trace.
Example two:
on the basis of the first embodiment, when grinding is performed, the machining allowance is small, the requirement for dimensional accuracy is high, frequent inspection is required after grinding, and the machining and inspection efficiency is reduced, therefore, as shown in fig. 4, the first grinding shaft 10 includes a first yielding section, a first through inspection section 103, and a first through stopping section 104, the diameter of the first yielding section is smaller than the diameter of the inner hole of the straight section of the workpiece, the outer diameter of the first through inspection section 103 is the lower limit value of the diameter of the inner hole of the straight section of the workpiece, the outer diameter of the first through stopping section 104 is the upper limit value of the diameter of the inner hole of the straight section of the workpiece, and the diameter of the first yielding section is smaller than the diameter of the inner hole of the straight section to be machined. In the grinding process, if the grinding size exceeds the first passing inspection section 103, the first passing inspection section 103 can enter, and the lower limit value of the size of the inner hole of the straight section meets the requirement; the grinding size is smaller than the first stop-through section 104, and the first stop-through section 104 cannot enter, so that the upper limit value of the inner hole size of the straight section meets the requirement, and the grinding size and the first stop-through section meet the requirement at the same time, so that the size is qualified.
The second grinding shaft 30 includes a second avoidance section, a second general inspection section 303 and a second no-go section 304, the diameter of the second avoidance section is smaller than the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second general inspection section 303 is the lower limit value of the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second no-go section 304 is the upper limit value of the diameter of the arc-shaped inner hole of the workpiece, the diameter of the second avoidance section is smaller than the diameter of the second avoidance section, the working principle of the second no-go section is the same as that of the first grinding shaft 10, and details are not repeated.
Through the first grinding shaft 10 and the second grinding shaft 30, detection can be achieved without stopping, so that the inspection efficiency is improved, and products of unqualified products are reduced.
In another embodiment, as shown in fig. 5 and 6, the first and second milling shafts 10 and 30 further include a first and second abdicating springs 105 and 305, the first milling shaft 10 includes a first rod body 102 and a first general inspection sleeve, the first general inspection sleeve is adapted to the shape of the first rod body 102 and is of a straight rod shape, the second milling shaft is adapted to the shape of the second rod body 302 and is of an arc structure, and the radian of the second general inspection sleeve is the same as that of the inner hole of the arc section of the workpiece and is on the same arc curve;
the first general detection sleeve comprises a first general detection section 103 and a first through stopping section 104, the diameter of the rod body is smaller than that of a straight inner hole of a workpiece, the outer diameter of the first general detection section 103 is the lower limit value of the diameter of the straight inner hole of the workpiece, the outer diameter of the first through stopping section 104 is the upper limit value of the diameter of the straight inner hole of the workpiece, and the diameter of the first rod body 102 is smaller than that of the first general detection section 103; the first general detection sleeve is slidably sleeved on the first rod body 102, one end of a first abdicating spring 105 is fixedly connected to the first general detection sleeve, and the other end is fixedly connected to the first grinding shaft 10;
the second general detection sleeve comprises a second general detection section 303 and a second stop-go section 304, the diameter of the second rod body 302 is smaller than the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second general detection section 303 is the lower limit value of the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second stop-go section 304 is the upper limit value of the diameter of the arc-shaped inner hole of the workpiece, and the diameter of the second rod body 302 is smaller than the diameter of the second general detection section 303; the second general detection sleeve is slidably sleeved on the second rod body 302, one end of the second abdicating spring 305 is fixedly connected to the second general detection sleeve, and the other end is fixedly connected to the second grinding shaft 30.
In operation, as the grinding is continued, when the first grinding shaft 10 and/or the second grinding shaft 30 moves beyond the inner hole of the straight section and/or the inner hole of the arc section, the first passing section 103 and the second passing section 303 can pass through and the first passing stopping section 104 and the second passing stopping section 304 cannot pass through, the machining is qualified. When the workpiece is not machined in place, only the electric telescopic rod 20 needs to be controlled to retract, and reciprocating grinding is achieved. In order to avoid the damage caused by the collision of the first through section 104, the second through section 304 and/or the first through section 103 and the second through section 303 against the orifice, in the above scheme, the first through detection sleeve and the second through detection sleeve are slidably arranged on the grinding shaft and are respectively connected to the first grinding shaft 10 and the second grinding shaft 30 through the first spring and the second spring, so that the first through detection sleeve and the second through detection sleeve can form a yielding position when touching the orifice, an operator has enough observation time, and the damage of the orifice is avoided.
Example three:
on the basis of the first or second embodiment, since the outer diameter of the polishing head becomes smaller after a polishing head with a fixed size is used for multiple times, the aperture to be polished is smaller, and a new polishing head needs to be replaced frequently, which results in higher processing cost, in this embodiment, as shown in fig. 7 to 10, 4 each of the first polishing head 101 and the second polishing head 301 includes a first supporting block 11, a second supporting block 12, a connecting rod 106, an elastic pad 108 and a polishing layer 107, and the first supporting block 11 and the second supporting block 12 are connected by the connecting rod 106; the output end of the first telescopic feeding rod 60 is fixedly connected to the first supporting block 11 or the second supporting block 12 in the first polishing head 101, and the output end of the second telescopic feeding rod 70 is fixedly connected to the first supporting block 11 or the second supporting block 12 in the second polishing head 301; a first air inlet hole is formed in the first grinding shaft 10, a second air inlet hole 306 is formed in the second grinding shaft 30, and the first feeding telescopic rod 60 and the second feeding telescopic rod 70 are respectively and fixedly arranged in the first air inlet hole 109 and the second air inlet hole 306; the driving block 21 is provided with a first communicating hole 211, and the first communicating hole 211 is communicated with the first air inlet 109; a second communication hole 241 is formed in the slider 24, and the second communication hole 241 penetrates into the second air inlet hole 306; the first communicating hole 211 and the second communicating hole 241 are externally connected with an air inlet pipe;
as shown in fig. 8 and 10, the elastic pad 108 is an annular structure, two ends of the elastic pad are respectively connected to the first supporting block 11 and the second supporting block 12 in a sealing manner, the outer side of the elastic pad 108 is covered with the grinding layer 107, and when the first air inlet hole 109 and/or the second air inlet hole 306 are inflated, the elastic pad 108 drives the grinding layer 107 to protrude outward along the radial direction of the first grinding shaft 10 and/or the second grinding shaft 30.
During grinding, air is introduced through the first air inlet holes 109 and/or the second air inlet holes 306, and the air is filled in the first air inlet holes 109 and/or the second air inlet holes 306, so that the elastic pad 108 is pressed by air pressure, and the outward protrusion is pressed against the surface of the inner hole, and grinding is realized. Because the elasticity surplus of elastic pad 108 is great, can form through atmospheric pressure and warp to effective compensation grinding layer 107 that thins gradually, thereby can effectively reduce the change frequency of grinding head, although the deflection of elastic pad 108 is uncontrollable, combine to lead to examining cover work, can realize not shutting down the detection, consequently can improve machining efficiency under the circumstances that has great compensation surplus.
In the embodiment, as shown in fig. 8 and 10, a pressure relief hole 110 is formed in the support block, and the axis of the pressure relief hole 110 coincides with the axis of the grinding shaft. The pressure relief hole 110 has a smaller diameter than the first intake hole 109 and the second intake hole 306. Therefore, although the pressure relief hole 110 will cause the air flow to flow out, the aperture of the pressure relief hole 110 is smaller, so that a higher air pressure can still be maintained in the air inlet, and the elastic cushion 108 can effectively compensate.
Example four:
in another embodiment, as shown in fig. 11 and 12, each of the first polishing head 101 and the second polishing head 301 is a polishing ring 40, the polishing ring 40 includes a ring body 401, a supporting shaft 41 and a rotating blade 42, and the first polishing shaft 10 and the second polishing shaft 30 are respectively provided therein with a first air inlet 109 and a second air inlet 306; the driving block 21 is provided with a first communicating hole 211, and the first communicating hole 211 is communicated with the first air inlet 109; a second communication hole 241 is formed in the slider 24, and the second communication hole 241 penetrates into the second air inlet hole 306; the front ends of the first air inlet hole 109 and the second air inlet hole 306 are hollow structures, so that air can flow out; the rotating blade 42 is located in the first air inlet hole 109 or the second air inlet hole 306, the ring body 401 is located outside the first grinding shaft 10 or the second grinding shaft 30, the support shaft 41 is rotatably disposed at the front end of the first grinding shaft 10 or the second grinding shaft 30, the rotating blade 42 is fixedly mounted at one end of the support shaft 41 located in the first air inlet hole 109 or the second air inlet hole 306, and the ring body 401 is fixedly mounted at one end (end far from the driving block 21) of the support shaft 41 located outside the first grinding shaft 10 or the second grinding shaft 30;
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 open end and a bottom wall opposite to the open end, the open end faces the grinding shaft, the bottom wall is provided with a drainage hole 402, and the area of the projection of the drainage hole 402 in the axial direction of the grinding shaft is smaller than the area of the projection of the open end in the axial direction of the first grinding shaft 10 or the second grinding shaft 30, so that high pressure can be effectively formed in the inflation cavity 403;
the circumferential side of the ring body 401 is hermetically wrapped with an annular elastic pad 108, one side of the elastic pad 108, which is far away from the ring body 401, is fixedly provided with a grinding layer 107, and when the air is filled in the air inlet, the elastic pad 108 drives the grinding layer 107 to protrude outwards along the radial direction of the ring body 401;
when the air inlet is filled with air, the rotating blades 42 drive the ring body 401 to rotate under the action of the air flow.
The during operation, aerify through the intake pipe, the air current passes through the inlet port, the fretwork position that sees through the inlet port 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 aerify the intracavity and form atmospheric pressure, force cushion 108 to warp, it contradicts on the lateral wall of hole to drive the wearing layer 107, and the air current flows the in-process, can drive the blade and rotate, blade rotation drive ring body 401 rotates and then drive the wearing layer 107 and rotate, because the grinding axle itself has a rotation rate, the rotational speed of grinding layer 107 adds the rotational speed of ring body 401 for the rotational speed of grinding axle, thereby realize high-speed grinding, improve grinding efficiency and effect.
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 modifications that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (3)
1. The utility model provides a remove synchronous machine that grinds of two-way hole of step for grind the processing to the work piece hole, the work piece has a straight section hole and an segmental arc hole at least, the segmental arc hole with the straight section hole link up mutually just the straight section hole with the segmental arc hole is tangent, its characterized in that, it includes to grind the machine:
the device comprises a base, a first guide rail, a second guide rail, a third guide rail and a fourth guide rail, wherein the base is provided with a guide chute, and the extending track of the guide chute is a standard arc section;
the driving device comprises an electric telescopic rod, a driving block, a first connecting rod, a second connecting rod and a sliding block, the driving block is fixedly connected to the output end of the electric telescopic rod, the electric telescopic rod is used for driving the driving block to move, one end of the first connecting rod is fixedly connected to the driving block, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the sliding block, and the sliding block is slidably arranged in the guide sliding groove;
one end of the first grinding shaft is fixedly arranged on the driving block, and the other end of the first grinding shaft is provided with a first grinding head for grinding a straight inner hole part of a workpiece;
one end of the second grinding shaft is fixedly connected to the sliding block, a second grinding head is arranged at the other end of the second grinding shaft, the second grinding shaft is of an arc structure, the radian of the second grinding shaft is the same as that of the guide sliding groove, and the second grinding head is used for grinding an arc inner hole part of a workpiece; when the sliding block moves, the second grinding shaft is driven to slide along the extending direction of the guide sliding groove; one end of the straight inner hole is communicated and tangent with one end of the arc-shaped inner hole;
when the electric telescopic rod acts, the first grinding shaft and the second grinding shaft are driven to act synchronously through the driving block; and the number of the first and second groups,
the stair removing device comprises a first processor, a first wireless transceiving module, a first feeding telescopic rod, a second processor, a second wireless transceiving module and a second feeding telescopic rod, wherein the first feeding telescopic rod and the first wireless transceiving module are both in signal connection with the first processor, and the second feeding telescopic rod and the second wireless transceiving module are both in signal connection with the second processor;
a first containing chamber is formed in the first grinding shaft, and a second containing chamber is formed in the second grinding shaft;
the first telescopic feeding rod is fixedly arranged in the first accommodating chamber, and the first grinding head is arranged at the output end of the first telescopic feeding rod; the second feeding telescopic rod is fixedly arranged in the second accommodating chamber, and the second grinding head is arranged at the output end of the second feeding telescopic rod;
the first and second abrading heads have at least first and second operating states:
when the first working state is achieved, the first feeding telescopic rod extends, and the first grinding head is located in the straight inner hole; the second feeding extension rod is shortened, and the second grinding head is positioned in the arc-shaped inner hole;
when the grinding head is in a second working state, the first feeding telescopic rod is shortened, the first grinding head is located in the straight inner hole, the second feeding telescopic rod is extended, and the second grinding head is located in the straight inner hole.
2. The synchronous grinding machine for the stepped bidirectional inner holes according to claim 1, wherein the grinding machine further comprises a first abdicating spring and a second abdicating spring;
the first grinding shaft comprises a first rod body and a first general detection sleeve, the shape of the first general detection sleeve is matched with that of the first rod body, the second grinding shaft comprises a second rod body and a second general detection sleeve, and the shape of the second general detection sleeve is matched with that of the second rod body;
the first general detection sleeve comprises a first general detection section and a first stop section, the diameter of the rod body is smaller than that of a straight inner hole of a workpiece, the outer diameter of the first general detection section is the lower limit value of the diameter of the straight inner hole of the workpiece, the outer diameter of the first stop section is the upper limit value of the diameter of the straight inner hole of the workpiece, and the diameter of the first rod body is smaller than that of the first general detection section; the first general detection sleeve is slidably sleeved on the first rod body, one end of the first abdicating spring is fixedly connected to the first general detection sleeve, and the other end of the first abdicating spring is fixedly connected to the first grinding shaft;
the second general inspection sleeve comprises a second general inspection section and a second stop-go section, the diameter of the second rod body is smaller than the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second general inspection section is the lower limit value of the diameter of the arc-shaped inner hole of the workpiece, the outer diameter of the second stop-go section is the upper limit value of the diameter of the arc-shaped inner hole of the workpiece, and the diameter of the second rod body is smaller than the diameter of the second general inspection section; the second general detection sleeve is slidably sleeved on the second rod body, one end of the second abdicating spring is fixedly connected to the second general detection sleeve, and the other end of the second abdicating spring is fixedly connected to the second grinding shaft.
3. The synchronous grinding machine for bi-directional inner holes with steps removed as claimed in claim 1, wherein the first grinding head and the second grinding head each comprise a first supporting block, a second supporting block, a connecting rod, an elastic pad and a grinding layer, the first supporting block and the second supporting block are connected by the connecting rod; the output end of the first feeding telescopic rod is fixedly connected to the first supporting block or the second supporting block in the first grinding head, and the output end of the second feeding telescopic rod is fixedly connected to the first supporting block or the second supporting block in the second grinding head; a first air inlet hole is formed in the first grinding shaft, a second air inlet hole is formed in the second grinding shaft, and the first feeding telescopic rod and the second feeding telescopic rod are fixedly arranged in the first air inlet hole and the second air inlet hole respectively; the driving block is provided with a first communicating hole which is communicated into the first air inlet; a second communication hole is formed in the sliding block and penetrates into the second air inlet hole; the first communicating hole and the second communicating hole are externally connected with an air inlet pipe;
the elastic pad is of an annular structure, two ends of the elastic pad are respectively connected to the first supporting block and the second supporting block in a sealing mode, the grinding layer is wrapped on the outer side of the elastic pad, and when the first air inlet hole and/or the second air inlet hole are/is inflated, the elastic pad drives the grinding layer to protrude outwards along the radial direction of the first grinding shaft and/or the second grinding shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110098007.1A CN112894611B (en) | 2021-01-25 | 2021-01-25 | Synchronous grinding machine for stepped bidirectional inner hole |
| CN202111463626.2A CN114102425A (en) | 2021-01-25 | 2021-01-25 | Efficient bidirectional synchronous grinding machine for removing steps of pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110098007.1A CN112894611B (en) | 2021-01-25 | 2021-01-25 | Synchronous grinding machine for stepped bidirectional inner hole |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111463626.2A Division CN114102425A (en) | 2021-01-25 | 2021-01-25 | Efficient bidirectional synchronous grinding machine for removing steps of pipe fitting |
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| Publication Number | Publication Date |
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| CN112894611A CN112894611A (en) | 2021-06-04 |
| CN112894611B true CN112894611B (en) | 2022-11-22 |
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| CN202111463626.2A Withdrawn CN114102425A (en) | 2021-01-25 | 2021-01-25 | Efficient bidirectional synchronous grinding machine for removing steps of pipe fitting |
| CN202110098007.1A Active CN112894611B (en) | 2021-01-25 | 2021-01-25 | Synchronous grinding machine for stepped bidirectional inner hole |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111463626.2A Withdrawn CN114102425A (en) | 2021-01-25 | 2021-01-25 | Efficient bidirectional synchronous grinding machine for removing steps of pipe fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114654337A (en) * | 2022-05-16 | 2022-06-24 | 徐州市全球通精密钢管有限公司 | Be used for accurate slender steel pipe grinding device |
| CN118404484B (en) * | 2024-07-04 | 2024-10-29 | 江苏万恒铸业有限公司 | High-efficient processingequipment of steam turbine valve base |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1490744A (en) * | 1974-02-09 | 1977-11-02 | Dunlop Ltd | Tyre grinding machines |
| JP2659332B2 (en) * | 1994-03-02 | 1997-09-30 | 有限会社津山技研工業 | Polishing method and polishing device for curved pipe inner surface |
| JPH08252751A (en) * | 1995-03-16 | 1996-10-01 | Hitachi Zosen Corp | Equipment for internally polishing bent tube |
| CN102225520B (en) * | 2011-05-24 | 2013-03-20 | 清华大学 | Elbow trimming device and trimming method |
| CN104827381B (en) * | 2015-05-25 | 2017-08-29 | 鹰普航空零部件（无锡）有限公司 | Multiaxis autogenous mill |
| CN106863093A (en) * | 2015-12-14 | 2017-06-20 | 湘潭宏远电子科技有限公司 | A kind of steel pipe inner wall cleaning brush |
| CN205600491U (en) * | 2016-03-26 | 2016-09-28 | 郑州市钻石精密制造有限公司 | Honing head with adjustable |
| CN206335480U (en) * | 2016-12-27 | 2017-07-18 | 黄石成大精密机械制造有限公司 | A kind of emery wheel ground for metal pipe material inner circle |
| CN112171403A (en) * | 2020-10-26 | 2021-01-05 | 东莞市优伟机电科技有限公司 | Polishing device capable of synchronously polishing inside and outside of automobile exhaust elbow |
-
2021
- 2021-01-25 CN CN202111463626.2A patent/CN114102425A/en not_active Withdrawn
- 2021-01-25 CN CN202110098007.1A patent/CN112894611B/en active Active
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| CN112894611A (en) | 2021-06-04 |
| CN114102425A (en) | 2022-03-01 |
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Effective date of registration: 20221031 Address after: No. 16, Chenlu Road, Xiongzhou street, Liuhe District, Nanjing, Jiangsu 210000 Applicant after: NANJING GUHUA ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 010020 No.79, Ulanqab East Street, Saihan District, Hohhot City, Inner Mongolia Autonomous Region Applicant before: Pan Changting |
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