CN112873006A - Bidirectional synchronous inner hole grinding machine - Google Patents
Bidirectional synchronous inner hole grinding machine Download PDFInfo
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- CN112873006A CN112873006A CN202110099488.8A CN202110099488A CN112873006A CN 112873006 A CN112873006 A CN 112873006A CN 202110099488 A CN202110099488 A CN 202110099488A CN 112873006 A CN112873006 A CN 112873006A
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- Prior art keywords
- grinding
- hole
- grinding shaft
- air inlet
- shaft
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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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
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a bidirectional synchronous inner hole grinding machine, and belongs to the field of machining. The grinding machine is used for grinding the inner hole of a workpiece, and 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; one end of the first grinding shaft is fixedly arranged on the driving block and is used for grinding the straight inner hole part of the workpiece; and the second grinding shaft is of an arc structure, has the radian identical to that of the guide sliding groove, and is used for grinding the arc inner hole part of the workpiece. The invention realizes synchronous grinding of the straight section and the arc section, and the grinding machine has simple structure, does not need a complex control system and has high processing efficiency.
Description
Technical Field
The invention relates to the field of machining, in particular to a bidirectional synchronous inner hole 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.
As shown in fig. 1, for some pipe parts, the pipe parts have both straight inner holes and arc inner holes (such as communicating pipes), and when the inner holes are ground, the straight inner holes and the arc inner holes have different extending tracks, and therefore, the straight inner holes and the arc inner holes are usually ground separately twice, which results in low processing efficiency.
Disclosure of Invention
The invention provides a bidirectional synchronous inner hole grinding machine which can solve the problem that in the prior art, machining efficiency is low when parts which are provided with inner holes of straight sections and inner holes of arc sections are machined.
The utility model provides a two-way synchronous hole grinds machine 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, grind the machine and include:
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 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 the straight inner hole part of the workpiece; and the number of the first and second groups,
one end of the second grinding shaft is fixedly arranged on the sliding block, the other end of the second grinding shaft is provided with a second grinding head, the second grinding shaft is of an arc-shaped structure, the turnover radius of the second grinding shaft is the same as that of the guide sliding chute, the turnover radius of the guide sliding chute is the same as that of the arc-shaped inner hole, and the second grinding shaft is used for grinding the arc-shaped inner hole part of the workpiece; when the sliding block moves, the second grinding shaft is driven to slide along the extending direction of the guide sliding chute;
when the electric telescopic rod acts, the driving block drives the first grinding shaft and the second grinding shaft to act synchronously.
Preferably, the device further comprises a first abdicating spring and a second abdicating spring;
the first grinding shaft comprises a first rod body and a first general inspection sleeve, the shape of the first general inspection sleeve is matched with that of the first rod body, the second grinding shaft comprises a second rod body and a second general inspection sleeve, the shape of the second general inspection sleeve is matched with that of the second rod body, the second rod body is of an arc-shaped structure, and the turnover radius of the second rod body is the same as that of an arc-shaped inner hole;
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, the first grinding head and the second grinding head each comprise a supporting block, a connecting rod, an elastic pad and a grinding layer, the supporting block is connected to one end of the first grinding shaft and/or one end of the second grinding shaft through the connecting rod, a first air inlet hole is formed in the first grinding shaft, and a second air inlet hole is formed in the second grinding shaft; 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 an air inlet pipe;
the elastic pad is of an annular structure, two ends of the elastic pad are respectively connected to the grinding shaft and the 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.
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 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, and an air inlet hole and a second air inlet hole are respectively formed in the first grinding shaft and the second grinding shaft; 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;
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 first grinding shaft or the second grinding shaft, the bottom wall is provided with a drainage hole, and the area of the projection of the drainage hole in 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 in 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 bidirectional synchronous inner hole grinding machine, 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 carries out straight section inner hole grinding, the second grinding shaft carries out arc section inner hole grinding, synchronous grinding of a straight section and an arc section is realized, the grinding machine is simple in structure, a complex control system is not needed, and the processing efficiency is high.
Drawings
FIG. 1 is a schematic structural view of a part to be processed in the present invention;
FIG. 2 is a schematic structural view of a bidirectional synchronous internal hole grinder provided by 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 a partial enlarged view of fig. 11 at C.
Description of reference numerals:
10 a first grinding shaft; 101 a first polishing head; 102 a first escape segment; 103 a first pass inspection 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 first pressure relief vent; 11 a support 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 escape segment; 303 a second pass detection section; 304 a second pass-through 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 leading to the chute.
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 machined comprises a straight section inner hole and an arc section inner hole, and one end of the arc section inner hole is communicated with and tangent to one end of the straight section inner hole.
As shown in fig. 2, the bidirectional synchronous internal hole grinder provided by the embodiment of the present invention includes:
a base 50, on which a guide chute 51 is provided, an 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 sliding groove;
a first grinding shaft 10, one end of which is fixedly arranged on the driving block 21 and the other end of which is provided with a first grinding head 101 for grinding a straight inner hole part of a workpiece; and the number of the first and second groups,
a second grinding shaft 30, one end of which is fixedly arranged on the slide block 24, and the other end of which is provided with a second grinding head 301, which is in an arc structure and has a turnover radius the same as that of the guide chute 51, wherein the turnover radius refers to the extension radius of the radian after extension and the shaft diameter of the non-finger shaft, and the projection of the axis of the second grinding shaft 30 and the center line of the extension track of the guide chute 51 on the base 50 are on the same arc for grinding the arc inner hole part of the 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;
when the electric telescopic rod 20 moves, the driving block 21 drives the first grinding shaft 10 and the second grinding shaft 30 to move synchronously.
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. Start electric telescopic handle 20, electric telescopic handle 20 drives the drive block 21 and removes, drive block 21 drives first grinding axle 10 and removes, the hole towards straight section removes and polishes it, and simultaneously, drive block 21 drives the action of second connecting rod 23 through first connecting rod 22, second connecting rod 23 drives slider 24 and removes, because slider 24 can only slide in direction spout 51, consequently slider 24 can slide along the orbit of direction spout 51, and then drive the axis direction removal of second grinding axle 30 along the hole of segmental arc and polish it. Therefore, the synchronous polishing of the inner holes of the straight section and the inner holes of the arc section can be simultaneously carried out by adopting a single power source, a complex control system is not needed, and the synchronous precision is ensured.
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 the machining and inspection efficiency is reduced, so as shown in fig. 5 and 6, the grinding machine further comprises a first abdicating spring 105 and a second abdicating spring 305, the first grinding shaft 10 comprises 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 in a straight rod shape, the second grinding shaft 30 comprises a second rod body 302 and a second general inspection sleeve, the second general inspection sleeve is adapted to the shape of the second rod body 302 and is in an arc structure, the turnover radius of the second rod body is the same as that of an inner hole of an arc section of a workpiece, and the two are 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 move towards 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 polished aperture becomes smaller, and a new polishing head needs to be frequently replaced, so that the processing cost is higher, in this embodiment, as shown in fig. 7 to 10, each of the first polishing head 101 and the second polishing head 301 includes a supporting block 11, a connecting rod 106, an elastic pad 108 and a polishing layer 107, the supporting block 11 is connected to one end of the first polishing shaft 10 and/or the second polishing shaft 30 through the connecting rod 106, an air inlet is formed in the first polishing shaft 10, and a second air inlet 306 is formed in the second polishing shaft 30; 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 hole 109; the slide block 24 is provided with a second communication hole 241, 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, the elastic pad 108 is an annular structure, two ends of the elastic pad are respectively connected to the grinding shaft and the supporting block 11 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/is inflated, the elastic pad 108 drives the grinding layer 107 to protrude outwards along the radial direction of the grinding shaft.
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, a pressure relief hole 110 is formed in the supporting block 11, and the axis of the pressure relief hole 110 coincides with the axis of the grinding shaft. The diameter of the pressure relief hole 110 is smaller than the diameters of 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 an air inlet hole and a second air inlet hole 306 are respectively opened in the first polishing shaft 10 and the second polishing shaft 30; 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, consequently, the air input of air current is greater than the air output, thereby make and form atmospheric pressure in aerifing chamber 403, force cushion 108 to warp, it contradicts on the lateral wall of hole to drive wearing layer 107, and the air current flow in-process, can drive the blade and rotate, blade rotation drives ring body 401 and rotates and then drive wearing layer 107, because the grinding axle itself has a rotation rate, the rotation rate of grinding layer 107 adds ring body 401's rotation rate for the rotation rate 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 variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. The utility model provides a two-way synchronous hole grinds machine for grind 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 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 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 the straight inner hole part of the workpiece; and the number of the first and second groups,
one end of the second grinding shaft is fixedly arranged on the sliding block, the other end of the second grinding shaft is provided with a second grinding head, the second grinding shaft is of an arc-shaped structure, the turnover radius of the second grinding shaft is the same as that of the guide sliding chute, the turnover radius of the guide sliding chute is the same as that of the arc-shaped inner hole, and the second grinding shaft is used for grinding the arc-shaped inner hole part of the workpiece; when the sliding block moves, the second grinding shaft is driven to slide along the extending direction of the guide sliding chute;
when the electric telescopic rod acts, the driving block drives the first grinding shaft and the second grinding shaft to act synchronously.
2. The bi-directional synchronous internal hole grinder of claim 1, further comprising a first and second back-off spring;
the first grinding shaft comprises a first rod body and a first general inspection sleeve, the shape of the first general inspection sleeve is matched with that of the first rod body, the second grinding shaft comprises a second rod body and a second general inspection sleeve, the shape of the second general inspection sleeve is matched with that of the second rod body, the second rod body is of an arc-shaped structure, and the turnover radius of the second rod body is the same as that of an arc-shaped inner hole;
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.
3. The bi-directional synchronous inner hole grinding machine as claimed in claim 1, wherein the first grinding head and the second grinding head each comprise a support block, a connecting rod, an elastic pad and a grinding layer, the support block is connected to one end of the first grinding shaft and/or the second grinding shaft through the connecting rod, the first grinding shaft is provided with a first air inlet hole therein, and the second grinding shaft is provided with a second air inlet hole therein; 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 an air inlet pipe;
the elastic pad is of an annular structure, two ends of the elastic pad are respectively connected to the grinding shaft and the 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.
4. The bidirectional synchronous inner hole grinder of claim 1, wherein the supporting block is provided with a pressure relief hole, and an axis of the pressure relief hole coincides with an axis of the first grinding shaft and/or the second grinding shaft.
5. The bi-directional synchronous inner hole grinding machine as claimed in claim 1, wherein the first grinding head and the second grinding head are both grinding rings, the grinding rings comprise ring bodies, supporting shafts and rotating blades, and an air inlet hole and a second air inlet hole are respectively formed in the first grinding shaft and the second grinding shaft; 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;
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 first grinding shaft or the second grinding shaft, the bottom wall is provided with a drainage hole, and the area of the projection of the drainage hole in 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 in 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.
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| CN202110099488.8A CN112873006A (en) | 2021-01-25 | 2021-01-25 | Bidirectional synchronous inner hole grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110099488.8A CN112873006A (en) | 2021-01-25 | 2021-01-25 | Bidirectional synchronous inner hole grinding machine |
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| CN202110099488.8A Withdrawn CN112873006A (en) | 2021-01-25 | 2021-01-25 | Bidirectional synchronous inner hole grinding machine |
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| CN111215969A (en) * | 2020-03-20 | 2020-06-02 | 辽宁科技大学 | Magnetic grinding device for simultaneously processing multiple elongated tubes and using method thereof |
| CN111230653A (en) * | 2020-02-03 | 2020-06-05 | 天津大学 | Novel wheeled gasbag polishing device |
| CN111843665A (en) * | 2020-07-29 | 2020-10-30 | 徐矿平 | Processing technology and processing system for LED ceramic substrate |
| CN212144882U (en) * | 2020-04-24 | 2020-12-15 | 浙江万丰奥威汽轮股份有限公司 | Multi-hole simultaneous processing device for arc-shaped holes |
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| AT108114B (en) * | 1925-08-22 | 1927-11-25 | Scovill Manufacturing Co | Device for the automatic adjustment of the electrodes of electric arc furnaces fed with secondary current. |
| CN102266960A (en) * | 2010-06-03 | 2011-12-07 | 上海重型机器厂有限公司 | Device and method for machining inner hole of bent pipe of nuclear power main pipeline |
| CN202411979U (en) * | 2012-01-19 | 2012-09-05 | 宝鸡市中天鹏泰金属材料有限公司 | Inner bore grinding device of titanium tube |
| CN207508469U (en) * | 2018-02-08 | 2018-06-19 | 一诺精工（威海）有限公司 | A kind of arcuate socket electric discharge device |
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| CN209978787U (en) * | 2019-08-09 | 2020-01-21 | 宜春先锋军工机械有限公司 | Inner diameter detection measuring tool for annular part |
| CN111230653A (en) * | 2020-02-03 | 2020-06-05 | 天津大学 | Novel wheeled gasbag polishing device |
| CN111215969A (en) * | 2020-03-20 | 2020-06-02 | 辽宁科技大学 | Magnetic grinding device for simultaneously processing multiple elongated tubes and using method thereof |
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Application publication date: 20210601 |
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