CN110732921A - high-precision metal pipe inner wall grinding device - Google Patents
high-precision metal pipe inner wall grinding device Download PDFInfo
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- CN110732921A CN110732921A CN201911148725.4A CN201911148725A CN110732921A CN 110732921 A CN110732921 A CN 110732921A CN 201911148725 A CN201911148725 A CN 201911148725A CN 110732921 A CN110732921 A CN 110732921A
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- shaft
- grinding wheel
- pressing
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- 239000002184 metal Substances 0.000 title claims abstract description 109
- 230000008093 supporting effect Effects 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
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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
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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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
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses an high-precision metal pipe inner wall grinding device which comprises a base, a cylinder fixing plate, a driving cylinder, a driving ejector rod, a sliding rail, a motor sliding block, a motor and a main shaft, wherein a grinding shaft, a coarse grinding wheel, a fine grinding wheel, a connecting concave hole, a positioning pin hole, a pipe positioning block, a metal pipe, a pressing block, a pressing cylinder, a pressing ejector rod, a supporting shaft, a connecting bulge, a positioning pin, a right supporting plate, a left supporting plate, a supporting hole, a sliding rod, a sliding block, a bearing, a supporting spring and an electric cabinet.
Description
Technical Field
The invention relates to an machining device, in particular to a metal pipe inner wall grinding device.
Background
At present, in order to improve the precision and the smoothness of the inner wall of a metal pipe, generally adopts a grinding processing mode, an existing grinding processing device mainly comprises a motor, a main shaft and a grinding wheel, wherein the grinding wheel is fixedly installed on the main shaft, when the inner wall of the metal pipe needs to be processed, the metal pipe is firstly fixed, then the motor is started to drive the grinding wheel to rotate, the grinding wheel is driven to move to the other end along the end of the metal pipe while rotating, and the grinding wheel is placed in the inner wall of the pipe in the moving process, so that the inner wall of the metal pipe can be ground.
Disclosure of Invention
The invention aims to solve the problem of providing high-precision metal pipe inner wall grinding devices which are simple in structure, convenient to operate and good in stability and can greatly improve grinding precision.
In order to solve the above problems, the present invention provides a high-precision grinding apparatus for an inner wall of a metal pipe, comprising:
a base;
the cylinder fixing plate is fixed at the left end of the base and is vertical to the base;
the driving cylinder is fixed on the cylinder fixing plate, a driving ejector rod is arranged on the driving cylinder, and the driving ejector rod penetrates through the cylinder fixing plate and then extends to the right side of the cylinder fixing plate;
the sliding rail is fixed on the base, the length direction of the sliding rail is times the length direction of the base, the sliding rail is parallel to the driving ejector rod, and the length of the sliding rail is smaller than that of the base;
the motor sliding block is arranged on the right side of the air cylinder fixing plate and is arranged on the sliding rail, the motor sliding block is matched with the sliding rail, motors are fixed on the motor sliding block, the motors are fixedly connected with the front end of the driving ejector rod, and a main shaft is arranged on each motor;
the grinding shaft is fixed on the main shaft at the left end, a coarse grinding wheel and a fine grinding wheel are fixed on the right half part of the grinding shaft, the coarse grinding wheel is positioned on the right side of the fine grinding wheel, connecting concave holes and positioning pin holes are arranged on the right end face of the grinding shaft, the cross section of each connecting concave hole is a regular polygon, and the central axis of each connecting concave hole, the central axis of each positioning pin hole and the central axis of the grinding shaft are positioned on the same straight lines;
the pipe fitting positioning blocks are fixed on the base on the right side of the sliding rail, and the number of the pipe fitting positioning blocks is more than two;
the metal pipe fitting is placed on the pipe fitting positioning block;
the pressing blocks are arranged above the metal pipe fittings, the number of the pressing blocks is equal to that of the pipe fitting positioning blocks and corresponds to , and the pressing blocks are positioned right above the corresponding pipe fitting positioning blocks;
the number of the pressing cylinders is equal to that of the pressing blocks and corresponds to , the pressing cylinders are located above the corresponding pressing blocks, pressing ejector rods are arranged on each pressing cylinder, and the front ends of the pressing ejector rods are fixedly connected with the corresponding pressing blocks;
the supporting shaft is arranged on the right side of the grinding shaft, the central axis of the supporting shaft, the central axis of the grinding shaft and the central axis of the metal pipe fitting are positioned on the same straight lines, connecting protrusions are fixed on the left end face of the supporting shaft, the cross sections of the connecting protrusions are regular polygons, positioning pins are arranged on the connecting protrusions, the positioning pins are matched with the positioning pin holes, and the connecting protrusions are matched with the connecting concave holes;
the right supporting plate is fixed at the right end of the base;
the left supporting plate is fixed on the base on the right side of the pipe fitting, supporting holes are formed in the center of the left supporting plate, the supporting shaft is inserted into the supporting holes, and the diameter of each supporting hole is larger than that of the supporting shaft;
the two ends of the sliding rod are respectively fixed on the left supporting plate and the right supporting plate, the number of the sliding rod is more than two, more than sliding blocks are sleeved on the sliding rod, a bearing is fixed at the center of the sliding block, the right part of the supporting shaft is inserted into a bearing, and a supporting spring is sleeved on the sliding rod between the sliding block at the rightmost end and the right supporting plate.
And the electric cabinet is used for controlling the opening and closing of the driving cylinder, the pressing cylinder and the motor.
, according to the high-precision metal pipe inner wall grinding device, sliding support blocks are arranged on a sliding rail on the right side of the motor, the sliding support blocks are matched with the sliding rail, second bearings are arranged at the centers of the sliding support blocks, and the grinding shaft is inserted into the second bearings.
, according to the high-precision metal pipe inner wall grinding device, the main shaft and the grinding shaft are fixedly connected through the coupler.
, according to the high-precision metal pipe inner wall grinding device, the top surface of the pipe positioning block is arc-shaped, a plurality of clamping teeth for fixing metal pipes are uniformly distributed in the top surface, the bottom surface of the pressing block is also arc-shaped, and a plurality of clamping teeth for fixing metal pipes are uniformly distributed in the bottom surface.
, according to the high-precision metal pipe inner wall grinding device, the left half part of the rough grinding wheel is cylindrical, and the right half part of the rough grinding wheel is truncated cone-shaped.
, according to the high-precision metal pipe inner wall grinding device, the left half part of the fine grinding wheel is cylindrical, the right half part of the fine grinding wheel is circular truncated cone-shaped, and the diameter of the fine grinding wheel is larger than that of the rough grinding wheel.
, according to the high-precision metal pipe inner wall grinding device, stop blocks are arranged at the right end of the sliding rail.
, according to the high-precision grinding device for the inner wall of the metal pipe fitting, a handle is fixed on the top surface of the sliding block.
, according to the high-precision metal pipe inner wall grinding device, two grinding wheel fixing tables are arranged on the grinding shaft, the coarse grinding wheel and the fine grinding wheel are respectively sleeved on the two grinding wheel fixing tables, the grinding shafts on two sides of the two grinding wheel fixing tables are respectively provided with a -th thread and a second thread, the -th thread is provided with a -th nut for fixing, and the second thread is provided with a second nut for fixing.
, according to the high-precision metal pipe inner wall grinding device, the cross section of the grinding wheel fixing table is circular or regular polygon.
The metal pipe fitting grinding device has the advantages that (1) the structure is simple, (2) when the inner wall of a metal pipe fitting is ground, the metal pipe fitting is pressed, the grinding shaft is abutted with the supporting shaft by utilizing the positioning pin hole and the connecting concave hole in the grinding shaft and the positioning pin and the connecting convex hole in the supporting shaft, the supporting shaft and the grinding shaft are pressed by utilizing the pressing force of the supporting spring, at the same time, the supporting shaft and the grinding shaft are connected into a body, the left end of the grinding shaft is fixedly connected with a main shaft of a motor, the right end of the supporting shaft supports the supporting shaft through the sliding block and the bearing, compared with the conventional grinding device, the grinding shaft is not in a cantilever structure after being abutted with the supporting shaft, although the coarse grinding wheel and the fine grinding wheel are fixed to the right part of the grinding shaft, the stability of the coarse grinding wheel and the fine grinding wheel are greatly enhanced due to the supporting effect of the bearing, the swinging amplitude is greatly reduced in the grinding process, the grinding precision of the grinding is greatly improved, the requirement of the grinding processing of the metal pipe fitting can be met, and after the processing of the metal pipe fitting is finished, the metal pipe fitting can be separated, , the metal pipe fitting can be ground, and the metal pipe fitting can be conveniently ground, and the metal pipe fitting can be ground again, and the metal pipe fitting can be ground.
Drawings
Fig. 1 is a schematic structural view when an inner wall of a metal pipe is ground.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic structural view of the metal pipe after the inner wall of the metal pipe is ground.
Fig. 4 is a view from direction B in fig. 2.
Fig. 5 is a schematic view of the structure of the grinding shaft.
Fig. 6 is a cross-sectional view taken along plane C-C of fig. 5.
Fig. 7 is a front view of the support shaft.
Fig. 8 is a left side view of the support shaft.
Fig. 9 is a schematic structural view of the rough grinding wheel.
Fig. 10 is a schematic view of the structure of the fine grinding wheel.
In the figure, the grinding wheel comprises a driving air cylinder 1, a driving air cylinder 2, an air cylinder fixing plate 3, a driving ejector rod 4, a base 5, a sliding rail 6, a motor 7, a main shaft 8, a second bearing 9, a motor sliding block 10, a coupler 11, a sliding supporting block 12, a stop dog 13, a grinding shaft 14, a pipe fitting positioning block 15, a left supporting plate 16, a supporting hole 17, a pressing air cylinder 18, a right supporting plate 19, a supporting spring 20, a bearing 21, a sliding block 22, a sliding rod 23, a handle 24, a metal pipe fitting 25, a pressing block 26, a pressing ejector rod 27, a supporting shaft 28, a connecting bulge 29, a positioning pin 30, a positioning pin hole 31, a connecting concave hole 32, a second thread 33, a coarse grinding wheel 34, a second nut 35, a thread 36, a fine grinding wheel 37, a nut 38, a clamping tooth 39, a grinding wheel fixing table 39 and a grinding wheel positioning table.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 4, the device for grinding the inner wall of the metal pipe fitting with high precision is kinds, and comprises a base 4, wherein the base 4 is a basic component of the whole device, and other components are directly or indirectly arranged on the base 4.
The sliding rail 5 is fixed on the base 5, the length direction of the sliding rail 5 is times the length direction of the base 4, the sliding rail 5 is parallel to the driving ejector rod 3, the length of the sliding rail 5 is smaller than that of the base 4, the motor sliding block 9 is arranged on the sliding rail 5, the motor sliding block 9 is arranged on the right side of the cylinder fixing plate 2 and is arranged on the sliding rail 5, the motor sliding block 9 is matched with the sliding rail 5, motors 6 are fixed on the motor sliding block 9, and the main shaft 7 is arranged on the motors 6.
The driving cylinder 1 is started, the driving ejector rod 3 supplies 6 right driving forces to the motor 6, the motor 6 is arranged on the slide rail 5 through the motor slide block 9, at the moment, the motor 6 and the motor slide block 9 move rightwards along the slide rail 5, similarly, when the driving cylinder 1 is closed, the driving ejector rod 3 retracts leftwards and resets, the driving ejector rod 3 retracts and resets, the motor 6 left pulling forces are supplied when the driving ejector rod 3 retracts and resets, and under the action of the pulling forces, the motor 6 and the motor slide block 9 move leftwards along the slide rail 5.
Therefore, by opening and closing the driving cylinder 1, the motor 6 is driven to move to the right or left along the slide rail 5 under the action force of the driving mandril 3.
As shown in fig. 1, 2, 4, 5 and 6, grinding shafts 13 are arranged on the right side of the main shaft 7, the left end of the grinding shaft 13 is fixed on the main shaft 7, a rough grinding wheel 36 and a fine grinding wheel 33 are fixed on the right half of the grinding shaft 13, the rough grinding wheel 36 is positioned on the right side of the fine grinding wheel 33, connecting concave holes 31 and positioning pin holes 30 are arranged on the right end surface of the grinding shaft 13, in the embodiment, the cross section of the connecting concave hole 31 is a regular hexagon, and the central axes of the connecting concave hole 31, the positioning pin holes 30 and the central axis of the grinding shaft 13 are positioned on the same line of .
In other embodiments, the cross-section of the connection recess 31 may be square or regular pentagon or other regular polygon, and the function and function are the same as those of the embodiment.
When the motor 6 is started, the main shaft 7 rotates continuously, and when the main shaft 7 rotates, the grinding shaft 13 is fixedly connected with the main shaft 7, so that the grinding shaft 13 also rotates along with the rotation of the main shaft 7, and the rotating speed is the same as that of the main shaft 7. when the grinding shaft 13 rotates along with the main shaft 7, steps are carried out to drive the coarse grinding wheel 36 and the fine grinding wheel 33 to rotate, and the coarse grinding wheel 36 and the fine grinding wheel 33 rotate to realize the grinding function.
As shown in fig. 1, 2 and 4, a pipe fitting positioning block 14 is fixed on the base 4 on the right side of the sliding rail 5, and a metal pipe fitting 24 is placed on the pipe fitting positioning block 14, in this embodiment, there are two pipe fitting positioning blocks 14, and straight lines can be determined through the two pipe fitting positioning blocks 14, and the straight lines are exactly parallel to the central axis of the metal pipe fitting 24 or on the same straight lines, so as to well position the metal pipe fitting 24.
In other embodiments, if the length of the metal tube 24 is longer, the tube positioning block 14 can be three or four, so can make the supporting force of the metal tube 24 more uniform.
The metal pipe fitting 24 is provided with the pressing block 25 above, the pressing block 25 corresponds to the pipe fitting positioning blocks 14 in equal number and , the pressing block 25 is located right above the corresponding pipe fitting positioning block 14, the pressing cylinder 17 is further arranged right above the pressing block 25, the pressing cylinder 17 corresponds to the pressing block 25 in equal number and , the pressing cylinder 17 is located above the corresponding pressing block 25, each pressing cylinder 17 is provided with pressing ejector rods 26, and the front ends of the pressing ejector rods 26 are fixedly connected with the corresponding pressing block 25.
Before the metal pipe 24 is ground, the pressing cylinder 17 is started, the pressing ejector rod 26 drives the pressing block 25 to continuously move downwards, and the metal pipe 24 is firmly pressed under the combined action of the pressing block 25 and the pipe positioning block 14 along with the downward movement of the pressing block 25, so that the metal pipe 24 is positioned, and the metal pipe 24 is prevented from moving in the front-back, left-right and circumferential directions in the grinding process.
As shown in fig. 1, 2, 7 and 8, a supporting shaft 27 is arranged on the right side of the grinding shaft 13, the central axis of the supporting shaft 27, the central axis of the grinding shaft 13 and the central axis of the metal pipe 24 are located on the same straight lines, connecting protrusions 28 are fixed on the left end face of the supporting shaft 27, the cross sections of the connecting protrusions 28 are regular hexagons, positioning pins 29 are arranged on the connecting protrusions 28, the positioning pins 29 are matched with the positioning pin holes 30, and the connecting protrusions 28 are matched with the connecting concave holes 31.
In other embodiments, the cross-section of the connecting protrusion 28 may also be square, regular pentagon, or other positive multi-deformation, which functions in the same manner as the present embodiment.
When the grinding shaft 13 is butted with the supporting shaft 27, the positioning pin 29 is inserted into the positioning pin hole 30, and the connecting protrusion 28 is just inserted into the connecting concave hole 31, so , when the grinding shaft 13 rotates, the supporting shaft 27 is also driven to rotate, if the supporting shaft 27 is effectively supported, because the grinding shaft 13 is connected with the supporting shaft 27 to form a body, at this time, the combination of the grinding shaft 13 and the supporting shaft 27 has a supporting mechanism and is not a cantilever mechanism, so that no matter the grinding shaft 13 and the supporting shaft 27 are in a static state or a rotating state, the shaking amplitude is greatly reduced, and the stability of the grinding shaft 13 and the supporting shaft 27 is greatly improved.
As shown in fig. 1, right support plates 18 are fixed to the right end of the base 4, left support plates 15 are fixed to the base 4 on the right side of the metal pipe 24, support holes 16 are provided in the left support plates 15, the support shafts 27 are inserted into the support holes 16, and the diameters of the support holes 16 are larger than the diameters of the support shafts 27, so that the support shafts 27 and the support holes 16 do not interfere with each other in position, and in fact, the support holes 16 are provided to avoid the interference between the left support plates 15 and the support shafts 27.
A slide bar 22 is fixed between the left support plate 15 and the right support plate 16, in this embodiment, two slide bars 22 are provided, two slide blocks 21 are sleeved on the slide bars 22, an -th bearing 20 is fixed at the center of the slide block 21, the right part of the support shaft 27 is inserted into the -th bearing 20, and a support spring 19 is sleeved on the slide bar 22 between the rightmost slide block 21 and the right support plate 18.
When the inner wall of the metal pipe 24 is ground, the grinding shaft 13 is placed in the inner cavity of the metal pipe 24, at this time, under the elastic force action of the supporting spring 19, the supporting shaft 27 is also inserted in the inner cavity of the metal pipe 24, the positioning pin 29 is inserted in the positioning pin hole 30, the connecting protrusion 28 is butted with the connecting concave hole 31, the left end face of the supporting shaft 27 is butted against the right end face of the grinding shaft 13, because the connecting protrusion 28 and the connecting concave hole 31 are regular polygons and are matched with each other, relative rotation between the grinding shaft 13 and the supporting shaft 27 cannot occur, and under the driving of the grinding shaft 13, the supporting shaft 27 and the grinding shaft 13 can rotate synchronously.
In addition, the positioning pin 29 and the positioning pin hole 30 have a positioning function, and the matching and positioning functions of the positioning pin 29 and the positioning pin hole 30 can ensure that the central axis of the grinding shaft 13 and the central axis of the supporting shaft 27 are located on the same straight lines when the grinding shaft 13 is butted with the supporting shaft 27.
When the driving cylinder 1 drives the motor 6, the grinding shaft 13, the coarse grinding wheel 36 and the fine grinding wheel 33 to slide rightwards along the slide rail 5, the supporting shaft 27 and the slide block 21 also move rightwards along the slide rod 22 by overcoming the elastic force of the supporting spring 19, and at the moment, if the motor 6 drives the grinding shaft 13, the coarse grinding wheel 36 and the fine grinding wheel 33 to rotate, the inner wall of the metal pipe fitting 24 can be continuously ground.
When the rough grinding wheel 36 and the fine grinding wheel 33 move rightward with the grinding shaft 13 and the support shaft 27 and finish grinding the inner wall of the entire metal pipe 24. The motor 6, the driving cylinder 1 and the pressing cylinder 26 are sequentially turned off, after the motor 6 is turned off, the main shaft 7, the grinding shaft 13, the rough grinding wheel 36, the fine grinding wheel 33 and the supporting shaft 27 stop rotating, after the driving cylinder 1 is turned off, the driving ejector rod 3 gradually moves leftwards along the slide rail 5 and resets, the grinding shaft 13, the rough grinding wheel 36 and the fine grinding wheel 33 also move leftwards along the driving ejector rod 3 and reset, and after resetting, the grinding shaft 13, the rough grinding wheel 36 and the fine grinding wheel 33 all move to the left side of the metal pipe 24 and are separated from the metal pipe 24.
After the grinding shaft 13, the rough grinding wheel 36 and the fine grinding wheel 33 are separated from the metal pipe 24, the slide block 21 is pulled to overcome the elastic force of the supporting spring 19 to move rightwards along the slide rod 22, the supporting shaft 27 is also moved rightwards along with the slide block 21 under the driving of the slide block 21, and the supporting shaft 27 is also separated from the metal pipe 24 along with the rightwards movement of the slide block 21.
When the supporting shaft 27 is completely released from the metal pipe 24, as shown in fig. 3, the pressing cylinder 17 is turned off, the pressing rod 26 drives the pressing block 25 to move upward and reset, at this time, the metal pipe 24 is no longer pressed, and the operator takes the ground metal pipe 24 off the pipe positioning block 14.
After the metal pipe fittings 24 which are ground are taken down, unprocessed metal pipe fittings 24 are placed on the pipe fitting positioning block 14 again by a worker, then the sliding block 21 is loosened, the supporting shaft 27 is inserted into the unprocessed metal pipe fittings 24 again under the action of the elastic force of the supporting spring 19 and is butted with the grinding shaft 13 again, after the butting is completed, the worker sequentially starts the pressing cylinder 17, the motor 6 and the driving cylinder 1, so that shows that the unprocessed metal pipe fittings 24 are pressed and cut, the grinding work of the inner walls of the metal pipe fittings 24 can be completed rapidly by the aid of the cyclic reciprocating process, and the operation is very convenient.
In other embodiments, the number of the sliding bars 22 between the left support plate 15 and the right support plate 18 can be four, and the function and usage are the same as those of the embodiment.
In the high-precision grinding device for the inner wall of the metal pipe fitting of the embodiment, the grinding shaft 13 and the supporting shaft 27 can be butted and separated as required, when the inner wall of the metal pipe 24 is ground, the grinding shaft 13 is butted with the supporting shaft 27, and at this time, the combination of the grinding shaft 13 and the supporting shaft 27 can be effectively supported, and is not a cantilever mechanism any more, so the structure is stable, thereby ensuring the grinding processing precision of the inner wall of the metal pipe fitting 24, when the metal pipe fitting 24 needs to be taken out after being processed, the grinding shaft 13 is separated from the supporting shaft 27, and the metal pipe 24 after machining can be quickly taken out, and a new metal pipe 24 which is not machined is replaced, compared with the existing grinding device, the grinding shaft has strong stability and small shaking amplitude, thereby greatly improving the grinding precision and being very convenient to operate.
The high-precision metal pipe inner wall grinding device is provided with an electric cabinet specially used for and used for controlling the opening and closing of the driving cylinder 1, the motor 6 and the pressing cylinder 17.
As shown in fig. 1 and 3, in the high-precision grinding device for the inner wall of the metal pipe, sliding support blocks 11 are arranged on a slide rail 5 on the right side of a motor 6, the sliding support blocks 11 are matched with the slide rail 5, second bearings 8 are arranged at the center of the sliding support blocks 11, and a grinding shaft 13 is inserted into the second bearings 8, so that when the grinding shaft 13 is butted with a support shaft 27 to form a body, the left end of the grinding shaft is supported by the second bearings 8, and the right end of the grinding shaft is supported by a bearing 20, and the bearing 20 and the second bearing 8 move rightward along with the grinding shaft 13 and the support shaft 27, so that the whole grinding shaft 13 and the support shaft 27 can rotate more stably in the grinding process, the step reduces the swing amplitude, and the step improves the grinding precision of the inner wall of the metal pipe 24.
In the high-precision metal pipe inner wall grinding device of the embodiment, the main shaft 7 and the grinding shaft 13 are fixedly connected through the coupling 10, so that the main shaft 7 and the grinding shaft 13 can be more stably fixed into bodies.
As shown in fig. 4, in the high-precision grinding device for inner walls of metal pipes of this embodiment, the top surface of the pipe positioning block 14 is circular, and two clamping teeth 38 for fixing the metal pipe 24 are uniformly distributed in the top surface; the bottom surface of the pressing block 25 is also arc-shaped, and two clamping teeth 38 for fixing the metal pipe fitting 24 are uniformly distributed in the bottom surface. The clamping teeth 38 cooperate to better clamp the metal tube 24, in particular to prevent the metal tube 24 from rotating in the circumferential direction during the grinding process.
In other embodiments, the number of gripping teeth 38 in tube positioning block 14 and the number of gripping teeth 38 in pressing block 25 may also be three or more, which functions as the present embodiment.
As shown in fig. 9, in the high-precision grinding device for inner wall of metal pipe fitting of the present embodiment, the left half of the rough grinding wheel 36 is cylindrical, and the right half is truncated cone, so , the rough grinding wheel 36 can grind the inner wall of the metal pipe fitting 24 more quickly and accurately, and the rough grinding wheel 36 can be positioned better.
As shown in FIG. 10, in the high-precision grinding device for inner wall of metal pipe of the present embodiment, the left half of the fine grinding wheel 33 is cylindrical, the right half is truncated cone, and the diameter of the fine grinding wheel 33 is larger than that of the rough grinding wheel 36. is obtained, so that the fine grinding wheel 33 can grind the inner wall of the metal pipe 24 more quickly and accurately, and the fine grinding wheel 33 can be positioned better.
As shown in fig. 1 and 3, in the high-precision grinding device for the inner wall of the metal pipe fitting of the embodiment, stoppers 12 are disposed at the right end of the slide rail 5, so that the sliding distance between the motor slider 9 and the sliding support block 11 can be limited, and the sliding distance is prevented from being separated from the slide rail 5.
According to the high-precision metal pipe inner wall grinding device, the handle 23 is fixed on the top surface of the sliding block 21, the sliding block 21 is convenient to push to move along the sliding rod 22 through the handle 23, and the operation is more convenient.
As shown in fig. 5 and 6, in the high-precision grinding device for inner walls of metal pipes of this embodiment, two grinding wheel fixing tables 39 are provided on the grinding shaft 13, the rough grinding wheel 36 and the fine grinding wheel 33 are respectively sleeved on the two grinding wheel fixing tables 39, -th threads 35 and second threads 32 are respectively provided on the grinding shafts on both sides of the grinding wheel fixing tables 39, -th nuts 37 for fixing are provided on the -th threads 35, and second nuts 34 for fixing are provided on the second threads 32, so that the rough grinding wheel 36 and the fine grinding wheel 33 can be more firmly fixed and mounted by the above-mentioned mechanism.
As shown in fig. 5 and 6, in the high-precision grinding device for the inner wall of the metal pipe of the present embodiment, the cross section of the grinding wheel fixing table 39 is square.
In other embodiments, the wheel holder 39 may be circular, hexagonal or other regular polygon such that ensures that the rough grinding wheel 36 and the fine grinding wheel 33 do not rotate relative to the grinding shaft 13 during the grinding process.
Claims (10)
1, kinds of high accuracy metal pipe fitting inner wall grinding device, its characterized in that includes:
a base (4);
the cylinder fixing plate (2) is fixed at the left end of the base (4) and is vertical to the base (4);
the driving cylinder (1) is fixed on the cylinder fixing plate (2), a driving ejector rod (3) is arranged on the driving cylinder (1), and the driving ejector rod (3) penetrates through the cylinder fixing plate (2) and then extends to the right side of the cylinder fixing plate (2);
the sliding rail (5) is fixed on the base (4), the length direction of the sliding rail (5) is times the length direction of the base (4), the sliding rail (5) is parallel to the driving ejector rod (3), and the length of the sliding rail (5) is smaller than that of the base (4);
the motor sliding block (9) is arranged on the right side of the air cylinder fixing plate (2) and is arranged on the sliding rail (5), the motor sliding block (9) is matched with the sliding rail (5), motors (6) are fixed on the motor sliding block (9), the motors (6) are fixedly connected with the front end of the driving ejector rod (3), and a main shaft (7) is arranged on the motors (6);
the grinding shaft (13) is fixed to the main shaft (7) at the left end, a coarse grinding wheel (36) and a fine grinding wheel (33) are fixed to the right half portion of the grinding shaft (13), the coarse grinding wheel (36) is located on the right side of the fine grinding wheel (33), connecting concave holes (31) and positioning pin holes (30) are formed in the right end face of the grinding shaft (13), the cross section of each connecting concave hole (31) is a regular polygon, and the central axis of each connecting concave hole (31), the central axis of each positioning pin hole (30) and the central axis of the grinding shaft (13) are located on the same straight lines;
the pipe fitting positioning blocks (14) are fixed on the base (4) on the right side of the sliding rail (5), and the number of the pipe fitting positioning blocks (14) is more than two;
a metal pipe fitting (24) placed on the pipe fitting positioning block (14);
the pressing blocks (25) are arranged above the metal pipe fittings (24), the number of the pressing blocks (25) is equal to that of the pipe fitting positioning blocks (14) and corresponds to , and the pressing blocks (25) are positioned right above the corresponding pipe fitting positioning blocks (14);
the number of the pressing cylinders (17) is equal to that of the pressing blocks (25) and corresponds to , the pressing cylinders (17) are located above the corresponding pressing blocks (25), each pressing cylinder (17) is provided with pressing ejector rods (26), and the front ends of the pressing ejector rods (26) are fixedly connected with the corresponding pressing blocks (25);
the supporting shaft (27) is arranged on the right side of the grinding shaft (13), the central axis of the supporting shaft (27), the central axis of the grinding shaft (13) and the central axis of the metal pipe fitting (24) are located on the same straight lines, connecting protrusions (28) are fixed on the left end face of the supporting shaft (27), the cross sections of the connecting protrusions (28) are regular polygons, positioning pins (29) are arranged on the connecting protrusions (28), the positioning pins (29) are matched with the positioning pin holes (30), and the connecting protrusions (28) are matched with the connecting concave holes (31);
a right support plate (18) fixed to the right end of the base (4);
the left supporting plate (15) is fixed on the base (4) on the right side of the metal pipe fitting (24), supporting holes (16) are formed in the center of the left supporting plate (15), the supporting shaft (27) is inserted into the supporting holes (16), and the diameter of each supporting hole (16) is larger than that of each supporting shaft (27);
slide bar (22), both ends are fixed in respectively on left branch fagging (15) and right branch fagging (18), slide bar (22) are more than two, slider (21) more than have been cup jointed on slide bar (22), the center department of slider (21) is fixed with bearing (20), the right part of back shaft (27) inserts in bearing (20), has cup jointed supporting spring (19) on slide bar (22) between slider (21) of rightmost end and right branch fagging (18).
And the electric cabinet is used for controlling the opening and closing of the driving cylinder (1), the pressing cylinder (17) and the motor (6).
2. The device for grinding the inner wall of the high-precision metal pipe fitting according to claim 1 is characterized in that sliding support blocks (11) are arranged on a sliding rail (5) on the right side of the motor (6), the sliding support blocks (11) are matched with the sliding rail (5), second bearings (8) are arranged at the center of each sliding support block (11), and the grinding shaft (13) is inserted into each second bearing (8).
3. The high-precision metal pipe inner wall grinding device according to claim 1, wherein: the main shaft (7) is fixedly connected with the grinding shaft (13) through a coupler (10).
4. The high-precision metal pipe inner wall grinding device according to claim 1, wherein: the top surface of the pipe fitting positioning block (14) is arc-shaped, and a plurality of clamping teeth (38) for fixing the metal pipe fitting (24) are uniformly distributed in the top surface; the bottom surface of the pressing block (25) is also arc-shaped, and a plurality of clamping teeth (38) for fixing the metal pipe fittings (24) are uniformly distributed in the bottom surface.
5. The high-precision metal pipe inner wall grinding device according to claim 1, wherein: the left half part of the rough grinding wheel (36) is cylindrical, and the right half part of the rough grinding wheel is in a circular truncated cone shape.
6. The high-precision metal pipe inner wall grinding device according to claim 5, wherein: the left half part of the fine grinding wheel (33) is cylindrical, the right half part of the fine grinding wheel is in a circular truncated cone shape, and the diameter of the fine grinding wheel (33) is larger than that of the rough grinding wheel (36).
7. The device for grinding the inner wall of the high-precision metal pipe fitting is characterized in that blocks (12) are arranged at the right end of the slide rail (5).
8. The high-precision metal pipe inner wall grinding device according to claim 1, wherein: a handle (23) is fixed on the top surface of the sliding block (21).
9. The high-precision metal pipe inner wall grinding device according to claim 1, wherein two grinding wheel fixing tables (39) are arranged on the grinding shaft (13), the rough grinding wheel (36) and the fine grinding wheel (33) are respectively sleeved on the two grinding wheel fixing tables (39), -th threads (35) and second threads (32) are respectively arranged on the grinding shaft (13) on two sides of the two grinding wheel fixing tables (39), -th nuts (37) for fixing are arranged on the -th threads (35), and second nuts (34) for fixing are arranged on the second threads (32).
10. The high-precision metal pipe inner wall grinding device according to claim 9, wherein: the cross section of the grinding wheel fixing table (29) is circular or regular polygon.
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| CN201911148725.4A CN110732921B (en) | 2019-11-21 | 2019-11-21 | High-precision metal pipe inner wall grinding device |
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| CN201911148725.4A CN110732921B (en) | 2019-11-21 | 2019-11-21 | High-precision metal pipe inner wall grinding device |
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| CN110732921A true CN110732921A (en) | 2020-01-31 |
| CN110732921B CN110732921B (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179123A (en) * | 2022-07-06 | 2022-10-14 | 中国科学院武汉岩土力学研究所 | Drilling inner wall side grinding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102022004923A1 (en) | 2022-12-20 | 2024-06-20 | Friedrich-Schiller-Universität Jena, Körperschaft des öffentlichen Rechts | Device and method for finishing bores |
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| CN110732921B (en) | 2021-07-13 |
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