CN110732921B - High-precision metal pipe inner wall grinding device - Google Patents
High-precision metal pipe inner wall grinding device Download PDFInfo
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- CN110732921B CN110732921B CN201911148725.4A CN201911148725A CN110732921B CN 110732921 B CN110732921 B CN 110732921B CN 201911148725 A CN201911148725 A CN 201911148725A CN 110732921 B CN110732921 B CN 110732921B
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- metal pipe
- shaft
- grinding
- grinding wheel
- supporting
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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
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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
- 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 a 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 the driving cylinder is arranged on the base; grinding shaft, rough grinding wheel, fine grinding wheel, connecting concave hole, positioning pin hole, pipe fitting positioning block, metal pipe fitting, pressing block, pressing cylinder, pressing ejector rod, supporting shaft, connecting protrusion, positioning pin, right supporting plate, left supporting plate, supporting hole, slide bar, slide block, first bearing, supporting spring and electric cabinet. The beneficial effects obtained by the invention are as follows: (1) the structure is simple; (2) the precision of grinding processing is greatly improved, and the requirement of processing the inner wall of the metal pipe fitting can be met; (3) the operation is very convenient.
Description
Technical Field
The invention relates to a 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 fitting, a grinding processing mode is generally adopted, an existing grinding processing device mainly comprises a motor, a main shaft and a grinding wheel, the grinding wheel is fixedly installed on the main shaft, when the inner wall of the metal pipe fitting needs to be processed, the metal pipe fitting is firstly fixed, then the motor is started to drive the grinding wheel to rotate, the grinding wheel rotates, meanwhile, the motor and the grinding wheel are pushed to move to the other end along one end of the metal pipe fitting, in the moving process, the grinding wheel is arranged in the inner wall of the pipe fitting, and the inner wall of the metal pipe fitting can be ground. However, in such a grinding device, the length of the spindle needs to be greater than that of the metal pipe, so that only the metal pipe with a short length can be processed, if the length of the metal pipe is long, especially when the length of the metal pipe is more than 5 times of the diameter of the metal pipe, the length of the spindle needs to be increased, even a rotating shaft needs to be fixedly connected to the spindle, no matter the spindle is extended or the rotating shaft is added, the spindle and the rotating shaft are in a cantilever structure relative to a motor, and the outer end of the spindle or the rotating shaft needs to be fixed with a grinding wheel.
Disclosure of Invention
The invention aims to solve the problems that: the high-precision metal pipe inner wall grinding device is simple in structure, convenient to operate and good in stability, and therefore grinding precision can be greatly improved.
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 consistent with that 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, a motor is fixed on the motor sliding block, the motor is fixedly connected with the front end of the driving ejector rod, and a main shaft is arranged on the motor;
the left end of the grinding shaft is fixed on the main shaft, 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, a connecting concave hole and a positioning pin hole are arranged on the right end face of the grinding shaft, the cross section of the connecting concave hole is a regular polygon, and the central axis of the connecting concave hole, the central axis of the positioning pin hole and the central axis of the grinding shaft are positioned on the same straight line;
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, the pressing blocks correspond to the pipe fitting positioning blocks one by one, and the pressing blocks are positioned right above the corresponding pipe fitting positioning blocks;
the pressing cylinders are equal in number and correspond to the pressing blocks one by one, the pressing cylinders are located above the corresponding pressing blocks, each pressing cylinder is provided with a pressing ejector rod, 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 line, a connecting bulge is fixed on the left end face of the supporting shaft, the cross section of the connecting bulge is a regular polygon, a positioning pin is arranged on the connecting bulge, the positioning pin is matched with the positioning pin hole, and the connecting bulge is matched with the connecting concave hole;
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, a supporting hole is formed in the center of the left supporting plate, the supporting shaft is inserted into the supporting hole, and the diameter of the 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, more than two sliding rods are arranged on the sliding rod in a sleeved mode, more than one sliding block is sleeved on the sliding rod, a first bearing is fixed at the center of the sliding block, the right portion of the supporting shaft is inserted into the first 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.
Further, according to the high-precision metal pipe inner wall grinding device, a sliding support block is arranged on a sliding rail on the right side of the motor and matched with the sliding rail, a second bearing is arranged at the center of the sliding support block, and the grinding shaft is inserted into the second bearing.
Further, according to the high-precision metal pipe inner wall grinding device, the main shaft is fixedly connected with the grinding shaft through the coupler.
Further, according to the high-precision metal pipe inner wall grinding device, the top surface of the pipe positioning block is arc-shaped, and a plurality of clamping teeth for fixing the metal pipe 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 the metal pipe fittings are uniformly distributed in the bottom surface.
Further, according to the high-precision grinding device for the inner wall of the metal pipe fitting, the left half part of the rough grinding wheel is cylindrical, and the right half part of the rough grinding wheel is in a circular truncated cone shape.
Further, 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 in a circular truncated cone shape, and the diameter of the fine grinding wheel is larger than that of the rough grinding wheel.
Further, according to the high-precision metal pipe inner wall grinding device, a stop block is arranged at the right end of the sliding rail.
Further, according to the high-precision metal pipe inner wall grinding device, the handle is fixed on the top surface of the sliding block.
Further, according to the high-precision metal pipe inner wall grinding device, the grinding shaft is provided with two grinding wheel fixing tables, 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 first thread and a second thread, the first thread is provided with a first nut for fixing, and the second thread is provided with a second nut for fixing.
Further, 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 beneficial effects obtained by the invention are as follows: (1) the structure is simple; (2) when the inner wall of the metal pipe fitting is ground, the metal pipe fitting is pressed tightly, the positioning pin hole and the connecting concave hole on the grinding shaft are utilized to be connected with the positioning pin and the connecting bulge on the supporting shaft, the grinding shaft is butted with the supporting shaft, and the supporting shaft and the grinding shaft are pressed tightly by utilizing the pressing force of the supporting spring, at the moment, the supporting shaft and the grinding shaft are connected into a whole, wherein the left end of the grinding shaft is fixedly connected with a main shaft of a motor, and the right end of the supporting shaft can support the supporting shaft through a sliding block and a first bearing, compared with the existing grinding device, the grinding shaft is not in a cantilever structure after being butted with the supporting shaft, although a coarse grinding wheel and a fine grinding wheel are fixed at the right part of the grinding shaft, the stability of the grinding shaft is greatly enhanced due to the supporting effect of the first bearing, the shaking amplitude is greatly reduced, the requirements for processing the inner wall of the metal pipe fitting can be met; (3) after the processing is finished, the motor is reset under the driving of the driving cylinder, the sliding block is pulled to move rightwards by overcoming the elastic force of the supporting spring, the supporting shaft and the grinding shaft can be separated, after the separation, the metal pipe fitting is loosened, the metal pipe fitting which is finished by grinding can be taken out, an unprocessed metal pipe fitting is placed, and the metal pipe fitting is ground again.
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: 1. a driving cylinder 2, a cylinder fixing plate 3, a driving mandril 4, a base 5, a slide rail 6 and a motor,
7. a main shaft 8, a second bearing 9, a motor slide block 10, a coupler 11, a sliding support block 12 and a stop block,
13. a grinding shaft 14, a pipe fitting positioning block 15, a left supporting plate 16, a supporting hole 17, a pressing cylinder,
18. a right supporting plate 19, a supporting spring 20, a first bearing 21, a sliding block 22, a sliding rod 23 and a handle,
24. a metal pipe fitting 25, a pressing block 26, a pressing mandril 27, a supporting shaft 28 and a connecting bulge,
29. a positioning pin 30, a positioning pin hole 31, a connecting concave hole 32, a second thread 33, a rough grinding wheel,
34. a second nut, 35, a first thread, 36, a fine grinding wheel, 37, a first 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 grinding device for the inner wall of the metal pipe fitting 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 left end of base 4 is fixed with a cylinder fixed plate 2, and cylinder fixed plate 2 and base 4 mutually perpendicular are fixed with one on the cylinder fixed plate 2 and drive actuating cylinder 1, drive and be equipped with drive ejector pin 3 on the actuating cylinder 1, and drive ejector pin 3 extends the right side of cylinder fixed plate 2 after passing cylinder fixed plate 2. The driving cylinder 1 is started, the driving ejector rod 3 can continuously extend rightwards, and in the process that the driving ejector rod 3 extends rightwards, the component fixed on the driving ejector rod 3 can be driven to move rightwards, so that the driving function of the driving cylinder 2 is achieved.
A sliding rail 5 is fixed on the base 5, the length direction of the sliding rail 5 is consistent with that 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. Be equipped with motor slide 9 on the slide rail 5, motor slide 9 locates the right side of locating cylinder fixed plate 2 and places in on slide rail 5, and motor slide 9 and slide rail 5 phase-match are fixed with a motor 6 on the motor slide 9, are equipped with main shaft 7 on the motor 6.
The driving cylinder 1 is started, the ejector rod 3 is driven to provide a rightward driving force for the motor 6, the motor 6 is arranged on the sliding rail 5 through the motor sliding block 9, and at the moment, the motor 6 and the motor sliding block 9 move rightward along the sliding rail 5; similarly, when the driving cylinder 1 is closed, the driving mandril 3 retracts leftwards to reset, and when the driving mandril 3 retracts to reset, the driving mandril 3 gives a pulling force leftwards to the motor 6, and under the action of the pulling force, 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, a grinding shaft 13 is disposed 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 located on the right side of the fine grinding wheel 33, a connecting concave hole 31 and a positioning pin hole 30 are disposed on the right end surface of the grinding shaft 13, in this embodiment, the cross section of the connecting concave hole 31 is a regular hexagon, and the central axis of the connecting concave hole 31, the central axis of the positioning pin hole 30 and the central axis of the grinding shaft 13 are located on the same straight line.
In other embodiments, the cross section of the connection concave hole 31 can be a square or a regular pentagon, and other regular polygons, and the function and function of the connection concave hole are the same as those of the embodiment.
When the motor 6 is started, the main shaft 7 can rotate continuously, and when the main shaft 7 rotates, the grinding shaft 13 can also rotate along with the rotation of the main shaft 7 because the grinding shaft 13 is fixedly connected with 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, the rough grinding wheel 36 and the fine grinding wheel 33 are fixed on the grinding shaft 13, so that the rough grinding wheel 36 and the fine grinding wheel 33 are further driven to rotate, and the rough grinding wheel 36 and the fine grinding wheel 33 can realize the grinding function through rotation.
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, the number of the pipe fitting positioning blocks 14 is two, and a straight line can be determined through the two pipe fitting positioning blocks 14, and the straight line is just parallel to the central axis of the metal pipe fitting 24 or is on the same straight line, so that the metal pipe fitting 24 can be positioned well.
In other embodiments, if the length of the metal pipe 24 is longer, the pipe positioning block 14 may be three or four, so as to balance the supporting force of the metal pipe 24.
The metal pipe fitting 24 is provided with a pressing block 25 above, the pressing block 25 corresponds to the pipe fitting positioning block 14 in equal number, the pressing block 25 is located above the corresponding pipe fitting positioning block 14, a pressing cylinder 17 is further arranged above the pressing block 25, the pressing cylinders 17 correspond to the pressing block 25 in equal number, the pressing cylinders 17 are located above the corresponding pressing blocks 25, each pressing cylinder 17 is provided with a pressing ejector rod 26, and the front ends of the pressing ejector rods 26 are fixedly connected with the corresponding pressing blocks 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 provided 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 line, a connecting protrusion 28 is fixed on the left end surface of the supporting shaft 27, the cross section of the connecting protrusion 28 is a regular hexagon, a positioning pin 29 is provided on the connecting protrusion 28, the positioning pin 29 is matched with the positioning pin hole 30, and the connecting protrusion 28 is matched with the connecting concave hole 31.
In other embodiments, the cross-section of the connecting protrusion 28 may also be square, regular pentagon or other positive multi-deformation, and the function is the same as that of this 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 that 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 and the supporting shaft 27 are connected into a whole, at the moment, a supporting mechanism exists in a combined body of the grinding shaft 13 and the supporting shaft 27, and the supporting mechanism is not a cantilever mechanism any more, so that the shaking amplitude is greatly reduced no matter the grinding shaft 13 and the supporting shaft 27 are in a static state or a rotating state, and the stability of the grinding shaft 13 and the supporting shaft 27 is greatly improved.
As shown in fig. 1, a right support plate 18 is fixed to the right end of the base 4, a left support plate 15 is fixed to the base 4 on the right side of the metal pipe 24, a support hole 16 is formed in the left support plate 15, the support shaft 27 is inserted into the support hole 16, and the diameter of the support hole 16 is larger than that of the support shaft 27, so that the support shaft 27 and the support hole 16 do not interfere with each other in position, and in fact, the support hole 16 is specially provided to avoid the interference between the left support plate 15 and the support shaft 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 sliders 21 are sleeved on the slide bars 22, a first bearing 20 is fixed at the center of the slider 21, the right portion of the support shaft 27 is inserted into the first bearing 20, and a support spring 19 is sleeved on the slide bar 22 between the rightmost slider 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 central axis of the grinding shaft 13 and the central axis of the supporting shaft 27 can be located on the same straight line when the grinding shaft 13 is butted with the supporting shaft 27 through the matching and positioning functions of the positioning pin 29 and the positioning pin hole 30.
When the driving cylinder 1 drives the motor 6, the grinding shaft 13, the rough 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 as long as the elastic force of the supporting spring 19 is overcome; at this time, if the motor 6 drives the grinding shaft 13, the rough grinding wheel 36 and the fine grinding wheel 33 to rotate, the inner wall of the metal pipe 24 can be continuously ground. Compared with the existing grinding device, in the example, because in the grinding process, the grinding shaft 13 and the supporting shaft 27 are connected into a whole, and relative rotation can not occur, and the supporting shaft 27 part is under the supporting action of the first bearing 20, so the whole grinding shaft 13 and the supporting shaft 27 are not in a cantilever structure any more, the stability is strong, the shaking amplitude is small, and the grinding precision of the inner wall of the metal pipe fitting can be greatly improved.
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 24 after the grinding process is finished is taken down, the worker places an unprocessed metal pipe 24 on the pipe positioning block 14 again, then loosens the sliding block 21, the supporting shaft 27 is inserted into the unprocessed metal pipe 24 again under the action of the elastic force of the supporting spring 19 and is butted with the grinding shaft 13 again, and after the butting is finished, the worker starts the pressing cylinder 17, the motor 6 and the driving cylinder 1 in sequence, so that the unprocessed metal pipe 24 is pressed and cut. The grinding processing work of the inner walls of the metal pipe fittings 24 can be completed quickly by the circulation reciprocating, and the operation is very convenient.
In other embodiments, the number of the sliding rods 22 between the left support plate 15 and the right support plate 18 can be four, and the function and the use of the sliding rods 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 a special electric cabinet and is 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, a sliding support block 11 is arranged on a sliding rail 5 on the right side of a motor 6, the sliding support block 11 is matched with the sliding rail 5, a second bearing 8 is arranged at the center of the sliding support block 11, and a grinding shaft 13 is inserted into the second bearing 8, so that when the grinding shaft 13 is butted with a support shaft 27 into a whole, the left end of the grinding shaft is supported by the second bearing 8, and the right end of the grinding shaft is supported by a first bearing 20, and the first bearing 20 and the second bearing 8 move rightwards along with the grinding shaft 13 and the support shaft 27, therefore, in the grinding process, the whole grinding shaft 13 and the support shaft 27 can rotate more stably, the shaking range is further reduced, and the grinding precision of the inner wall of the metal pipe 24 is further improved.
According to the high-precision metal pipe inner wall grinding device, the main shaft 7 is fixedly connected with the grinding shaft 13 through the coupler 10, so that the main shaft 7 and the grinding shaft 13 can be more stably fixed into a whole.
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 the locking teeth 38 in the tube positioning block 14 and the number of the locking teeth 38 in the pressing block 25 may also be three or more, and the function is the same as that of this embodiment.
As shown in fig. 9, in the high-precision grinding device for inner wall of metal pipe in accordance with the present embodiment, the left half of the rough grinding wheel 36 is cylindrical, and the right half is truncated cone, so that the rough grinding wheel 36 can grind the inner wall of the metal pipe 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, and the right half thereof is truncated cone-shaped, and the diameter of the fine grinding wheel 33 is larger than that of the rough grinding wheel 36. Thus, the fine grinding wheel 33 can more quickly and accurately grind the inner wall of the metal pipe 24, 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, a stopper 12 is 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 grinding device can be 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 the present 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, the grinding shafts on both sides of the grinding wheel fixing tables 39 are respectively provided with a first thread 35 and a second thread 32, the first thread 35 is provided with a first nut 37 for fixing, and the second thread 32 is provided with a second nut 34 for fixing.
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 a circle, a regular hexagon, or other regular polygon, so as to ensure 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. The utility model provides a high accuracy metal pipe fitting inner wall grinding device which 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 consistent with that 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), a motor (6) is fixed on the motor sliding block (9), the motor (6) is fixedly connected with the front end of the driving ejector rod (3), and a main shaft (7) is arranged on the motor (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), a connecting concave hole (31) and a positioning pin hole (30) are arranged on the right end face of the grinding shaft (13), the cross section of the connecting concave hole (31) is a regular polygon, and the central axis of the connecting concave hole (31), the central axis of the positioning pin hole (30) and the central axis of the grinding shaft (13) are located on the same straight line;
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), the pressing blocks (25) correspond to the pipe fitting positioning blocks (14) one by one, and the pressing blocks (25) are located 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), the pressing cylinders (17) correspond to the pressing blocks (25) one by one, the pressing cylinders (17) are located above the corresponding pressing blocks (25), each pressing cylinder (17) is provided with a pressing ejector rod (26), and the front end of each pressing ejector rod (26) is fixedly connected with the corresponding pressing block (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 line, a connecting bulge (28) is fixed on the left end face of the supporting shaft (27), the cross section of the connecting bulge (28) is a regular polygon, a positioning pin (29) is arranged on the connecting bulge (28), the positioning pin (29) is matched with the positioning pin hole (30), and the connecting bulge (28) is matched with the connecting concave hole (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), a supporting hole (16) is formed in the center of the left supporting plate (15), the supporting shaft (27) is inserted into the supporting hole (16), and the diameter of the supporting hole (16) is larger than that of the supporting shaft (27);
the two ends of each sliding rod (22) are respectively fixed on the left supporting plate (15) and the right supporting plate (18), the number of the sliding rods (22) is more than two, more than one sliding block (21) is sleeved on each sliding rod (22), a first bearing (20) is fixed at the center of each sliding block (21), the right part of each supporting shaft (27) is inserted into each first bearing (20), and a supporting spring (19) is sleeved on each sliding rod (22) between the sliding block (21) at the rightmost end and the right supporting plate (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 high-precision metal pipe inner wall grinding device according to claim 1, wherein: the grinding machine is characterized in that a sliding supporting block (11) is arranged on the sliding rail (5) on the right side of the motor (6), the sliding supporting block (11) is matched with the sliding rail (5), a second bearing (8) is arranged at the center of the sliding supporting block (11), and the grinding shaft (13) is inserted into the 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 high-precision metal pipe inner wall grinding device according to claim 1, wherein: the right end of the sliding rail (5) is provided with a stop block (12).
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: the grinding shaft (13) is provided with two grinding wheel fixing tables (39), the rough grinding wheel (36) and the fine grinding wheel (33) are respectively sleeved on the two grinding wheel fixing tables (39), the grinding shafts (13) on two sides of the two grinding wheel fixing tables (39) are respectively provided with a first thread (35) and a second thread (32), the first thread (35) is provided with a first nut (37) for fixing, and the second thread (32) is provided with a second nut (34) for fixing.
10. The high-precision metal pipe inner wall grinding device according to claim 9, wherein: the cross section of the grinding wheel fixing table (39) is circular or regular polygon.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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 CN110732921A (en) | 2020-01-31 |
| CN110732921B true CN110732921B (en) | 2021-07-13 |
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| CN115179123B (en) * | 2022-07-06 | 2024-04-05 | 中国科学院武汉岩土力学研究所 | Drilling inner wall side grinding device |
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| KR20110003622A (en) * | 2009-07-06 | 2011-01-13 | 한국주철관공업주식회사 | Inside grinding apparatus of cast iron pipe with ellipse or curved shape |
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|---|---|---|---|---|
| KR20110003622A (en) * | 2009-07-06 | 2011-01-13 | 한국주철관공업주식회사 | Inside grinding apparatus of cast iron pipe with ellipse or curved shape |
| CN104117883A (en) * | 2014-07-11 | 2014-10-29 | 山东球墨铸铁管有限公司 | Grinding rod device of centrifugal nodular cast iron pipe hydrostone-flat grinder |
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Effective date of registration: 20210521 Address after: No. 166, chemical engineering road, economic development zone, Boxing County, Binzhou City, Shandong Province Applicant after: Boxing Rongzhi Technology Innovation Development Co., Ltd Address before: 250200 building 6, yanmingquan South District, Zhangqiu District, Jinan City, Shandong Province Applicant before: Hu Guanxing |
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