CN210648608U - Cutter for processing elbow inner hole within 180 degrees - Google Patents
Cutter for processing elbow inner hole within 180 degrees Download PDFInfo
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- CN210648608U CN210648608U CN201921043740.8U CN201921043740U CN210648608U CN 210648608 U CN210648608 U CN 210648608U CN 201921043740 U CN201921043740 U CN 201921043740U CN 210648608 U CN210648608 U CN 210648608U
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Abstract
The utility model relates to a boring processing technology field, concretely relates to cutter of elbow hole within processing 180. The problems of poor precision, high cost and low efficiency of processing the inner hole of the workpiece elbow in the prior art are not solved, and the technical scheme adopted by the utility model comprises a rectangular workbench; the upper surface of the rectangular workbench is provided with a rotatable circular workbench, a special clamp is arranged on the circular workbench, the special clamp is in an arc block shape, the radian of the special clamp for the arc block is the same as that of a workpiece, and the upper surface of the special clamp is provided with a concave arc groove with the same radian and outer diameter as that of the workpiece; the long limit in one side of rectangle workstation on be provided with the stand, the stand is provided with the cutting board that can reciprocate on being close to the face of circular workstation, the both sides of cutting board are provided with two cutter base, cutter base's shape be trapezoidal, the elbow cutter set up on cutter base, hydraulic pressure workstation is connected with cutter base.
Description
Technical Field
The utility model relates to a boring processing technology field, concretely relates to cutter of elbow hole within processing 180.
Background
With the development of technologies such as aerospace, robots, new energy, precision machinery, national defense science and technology, the requirements on the performance such as precision, strength, quality, service life and stability of parts are continuously improved. With the improvement of precision and complexity of machinery, the progress of machinery manufacturing industry and the rapid development of heavy industry and light industry in China, the application range of bent pipelines and regular curve holes is continuously expanded. The bent pipeline is applied to precision instruments such as aerospace, nuclear energy, high-precision instruments, engines and the like, so that the requirement on the precision of the bent pipeline is continuously improved.
Aiming at the processing system of the inner hole of the elbow, few numerical control machines are designed in France, but the elbow with the angle of 50 degrees can be processed, and the processed workpiece is also a non-standard curved cylindrical surface. The experts of the research propose that the inner hole of the elbow can be machined by a special machining method, wherein the electrode head is connected with a main shaft head of an electric discharge machine tool by a spring, and three steel wires are uniformly distributed and connected on the circumference of the free end of the spring. Initially, the free ends of the springs are under tension by three wires in a compressed state, and the upper ends of the wires are connected to their respective length adjustment mechanisms around pulleys. During machining, the length adjusting mechanisms of the steel wires are controlled to adjust the releasing amount of the steel wires, so that the posture and the direction of the free end of the spring are controlled to be bent in a preset direction with corresponding curvature, and the electrode tip connected with the free end of the spring is controlled to machine a bent hole. Because the electrode head and the spindle head are connected by the spring, the vibration of the spring is very difficult to control in the processing process, thereby influencing the roughness and the precision of the processed hole; this method of machining is inefficient. In addition, as the processing becomes deeper and deeper, the spring becomes longer and the rigidity becomes worse, which leads to the continuous decrease of the stability during the processing. In addition, manual polishing is performed, and due to the fact that machining is difficult, the obtained workpiece is poor in precision, high in cost and low in efficiency.
A boring cutter (application number: 2019102157310) for processing the inner hole of the elbow with the angle within 180 degrees is designed for the purpose. The boring cutter is simple in structure and comprises a hollow cylindrical arc-shaped cutter bar, the cutter bar is in a 95-degree arc shape, a universal joint is used in the cutter bar to transmit power, one end of the cutter bar is connected with a cutter rest, a blade is fixed on the cutter rest, and the other end of the cutter bar is connected with a machine tool spindle. When the tool is used for machining, the positions of the workpiece, the workbench and the tool are determined, then the elbow workpiece is machined, the tool is retracted after the machining angle is 90-93 degrees, the workpiece is repositioned after turning around, and finally the other half of the workpiece is machined.
The processing system for processing the boring cutter for the inner hole of the elbow within 180 degrees has the following defects:
1. in the existing processing system of the boring cutter for processing the inner hole of the elbow within 180 degrees, universal joints are adopted in the cutter to transmit power, gaps exist among the universal joints, and errors can occur in the processing; the cutter adopts single-edge cutting, and can deviate under the influence of cutting force in the cutting process to influence the machining precision; the tool rest for clamping the tool is arranged on the tool and is too small, so that the strength of the mechanically-clamped blade is reduced;
2. in the existing processing system of the boring cutter for processing the inner hole of the elbow within 180 degrees, the workpiece is clamped in a traditional clamping mode of a pressing plate screw, the shape of the workpiece is special, time and labor are wasted during clamping, and the precision after clamping is difficult to guarantee;
3. in the existing processing system of the boring cutter for processing the inner hole of the elbow within 180 degrees, a through boring hole is adopted, a workpiece needs to be clamped secondarily, the secondary clamping is difficult to ensure the precision due to the particularity of the workpiece, and the processed workpiece has obvious connecting marks.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a solve the processing work piece elbow hole precision poor, with high costs, problem with low efficiency, the utility model provides a cutter of elbow hole within processing 180.
For solving the problems existing in the prior art, the technical scheme of the utility model is that: the utility model provides a cutter of elbow hole within 180 of processing, includes rectangle workstation, special fixture, elbow cutter and hydraulic oil station, its characterized in that: the upper surface of the rectangular workbench is provided with a rotatable circular workbench, a special clamp is arranged on the circular workbench, the special clamp is in an arc block shape, the radian of the special clamp for the arc block is the same as that of a workpiece, and the upper surface of the special clamp is provided with a concave arc groove with the same radian and outer diameter as that of the workpiece; the long edge of one side of the rectangular workbench is provided with an upright post, the surface of the upright post close to the circular workbench is provided with a cutting board capable of moving up and down, two sides of the cutting board are provided with two cutter bases, the cutter bases are trapezoidal in shape, the elbow cutters are arranged on the cutter bases, and the hydraulic workstation is connected with the cutter bases;
the elbow cutter consists of a cutter bar, a cutter frame, a cutter blade, a hydraulic motor and a hydraulic pipeline; the cutter bar is a hollow arc-shaped cylinder, the cutter rest is arranged at one end face of the cutter bar, the cutter rest is a cylinder with the radius smaller than that of the cutter bar by 5mm, grooves for fixing blades are oppositely arranged on the circumference of the cutter rest, the two blades are arranged at the opposite grooves of the cutter rest and fixed in parallel with staggered teeth, and the cutter point is outward; the hydraulic motor is fixedly arranged in the cutter bar and connected with the lower surface of the cutter frame, the cutter frame rotates along with the hydraulic motor, the hydraulic pipeline is connected with the hydraulic motor, and the hydraulic pipeline extends out of the other end surface of the cutter bar and penetrates through the cutter base to be connected with the hydraulic workstation.
The hydraulic work station is arranged on the other side of the upright post.
The parallel difference between two tool nose points of the blades is 0.3mm, and the back cutting amount difference of the two blades is 0.5 mm.
Compared with the prior art, the utility model has the advantages as follows:
1. the utility model adopts the hydraulic motor to directly drive the cutter to rotate, and the inside of the cutter is provided with the hydraulic pipeline connected with the motor, thus avoiding the existence of gaps; the double-edge staggered tooth machining is adopted, so that the method is suitable for machining materials with higher hardness, the surface precision of a workpiece is improved, the influence of cutting force is reduced, and the service life of a cutter is prolonged; the radius of increase knife rest improves blade intensity, and the cutter adopts the machine to press from both sides formula blade, can realize long-time processing through changing the blade, has improved the life of cutter, and the blade passes through recess and fix with screw on the knife rest, and the length of stretching out of blade decides the machining dimension, confirms the volume of stretching out and the machining dimension of blade through the external micrometer, through the length of stretching out of adjustment blade, improves the process range.
2. The utility model adopts the special fixture to clamp the workpiece, a groove with the same size as the radian and the outer diameter of the workpiece is made on the arc-shaped square block, the workpiece is put into the groove, the two end faces are 50mm shorter than the workpiece and are fixed, the clamping speed and the processing precision are improved during processing, and the labor intensity of workers is reduced;
3. the utility model adopts an improved machine tool to process, the machine tool comprises a rectangular workbench, a circular workbench, two cutter bases, a cutting board, a stand column and a hydraulic oil station, the two cutter bases are respectively arranged at two sides of the cutting board, the cutting board is arranged on the stand column, the hydraulic oil station is arranged behind the stand column, the improved machine tool can realize double-cutter processing of workpieces, secondary clamping of the workpieces is avoided, and the processing precision is improved;
4. the processing system of the utility model adopts a one-time clamping two-step processing mode to process the workpiece, thus further improving the processing precision and controlling the processing error at 0.02 mm;
5. the processing system of the utility model has a brand new design for the cutter, the cutter directly adopts the power of the hydraulic motor at this time, and the universal joint of the transmission device used before is removed, thereby canceling the clearance for transmitting the power, reducing the weight of the cutter, simplifying the structure of the workpiece and improving the processing precision;
6. the utility model discloses a system for processing only than the little 5mm of cutter arbor radius with the increase of cutter saddle radius, can reduce the unsettled length of blade like this, increases the intensity of blade, prevents to appear beating in cutting process, leads to processing not in place.
7. The utility model discloses a system for processing simple structure is convenient for maintain and maintain, has reduced the processing degree of difficulty coefficient, can directly accomplish processing by general operating personnel.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an elbow cutter;
FIG. 3 is a schematic view of the internal structure of the elbow cutter;
description of the labeling: 1-rectangular workbench, 2-circular workbench, 3-special fixture, 4-workpiece, 5-elbow cutter, 6-cutter base, 7-cutting board, 8-upright column, 9-hydraulic oil station, 10-blade, 11-tool rest and 12-tool bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a cutter for machining an elbow inner hole within 180 degrees, which comprises a rectangular workbench 1, a circular workbench 2, a special clamp 3, an elbow cutter 5, a cutter base 6, a cutter plate 7, an upright post 8 and a hydraulic oil station 9;
a rotatable circular workbench 2 is arranged on the upper surface of a rectangular workbench 1 which can translate back and forth, a special clamp 3 is arranged on the circular workbench 2, the special clamp 3 is in an arc-shaped block, the radian of the special clamp 3 for the arc-shaped block is the same as that of a workpiece, and a concave arc groove with the same radian as that of the workpiece 4 is arranged on the upper surface; the long limit of one side of rectangle workstation 1 on be provided with stand 8, stand 8 is provided with cutting board 7 that can reciprocate on being close to circular workstation 2's the face, the both sides of cutting board 7 are provided with two cutter base 6, cutter base 6 shape be trapezoidal, elbow cutter 5 set up on cutter base 6, hydraulic pressure workstation 9 sets up in the opposite side of stand 8, is connected with cutter base 6.
The upright column 8 is 1500mm long, 2000mm high and 500mm thick.
The cutting board 7 is 1500mm long, 500mm high and 200mm thick, and is arranged at the position 940mm high of the upright post 8.
Two trapezoidal cutter bases 6 of 240mm are placed at the positions of 600mm on two sides of the knife board 7, and the height of each cutter base 6 is 691 mm.
The tool holder 11 is a component of the cutting tool for fixing the blade 10, and the structural design of the tool holder 11 is mainly used for enhancing the strength of the blade 10 and preventing the occurrence of tool jump during the machining process.
The hydraulic motor 13 is fixedly arranged in the cutter bar 12 and connected with the lower part of the cutter frame 11, the cutter frame 11 rotates along with the hydraulic motor 13, the hydraulic pipeline 14 is connected with the hydraulic motor 13, the hydraulic pipeline 14 extends out of the other end face of the cutter bar 12 and penetrates through the cutter base 6 to be connected with the hydraulic workstation 9, the shape of the cutter bar 12 is unchanged, and the internal structure adopts the hydraulic motor to directly drive the cutter frame 11 to rotate. The hydraulic conduit 14 functions to power the hydraulic motor.
Two blades 10 are placed on a tool rest 11 and fixed through screws, the two blades 10 are fixed in parallel with staggered teeth, the tool points are outward, the parallel difference between the tool points is 0.3mm, and the back cutting amount difference of the two blades is 0.5mm, so that the cutting forces of two edges are mutually counteracted in the single-edge processing and double-edge staggered tooth processing, and the processing stability is improved; the processing efficiency is improved by double-edge processing; the staggered teeth reduce the amount of consumed tools, can process workpieces made of materials with higher hardness, and simultaneously improves the processing efficiency.
The utility model discloses a special fixture according to the circular arc radius of work piece, makes a same circular arc radius's cuboid anchor clamps, does a semicircular groove who has work piece excircle radius size above the anchor clamps, and the both ends of anchor clamps will be less than each 50mm of work piece both ends face.
The elbow work piece is an arc cylinder, the translation takes place easily when the clamping alignment, it needs a suitable benchmark to hardly find simultaneously on the elbow work piece, design the anchor clamps of an arc cuboid to this, recess about the higher authority for placing the elbow work piece, the inboard of anchor clamps is the arc surface, be convenient for use this as the benchmark, the bottom surface of anchor clamps is the plane, be convenient for press from both sides tight work piece, the both ends face of anchor clamps is less than work piece both ends face 50mm, it can interfere the cutter processing to be convenient for place anchor clamps when adding man-hour, design like this and improved and press from both sides dress speed and alignment speed, thereby machining efficiency has been promoted and workman's intensity of labour has been reduced.
Taking the machining of a cast iron elbow workpiece as an example, the excircle of the workpiece is
The inner hole is
Circular arc radius R is 550mm for the example, introduces the utility model discloses processing system's application method:
1. according to the size of a workpiece, a special clamp 3 and an elbow cutter 5 are manufactured;
2. placing a circular workbench 2 on a rectangular workbench 1, and concentrically aligning the circular workbench 2 and an elbow cutter 5;
3. placing a workpiece 4 on the special fixture 3, wherein the left end surface and the right end surface of the workpiece 4 are 50mm longer than the two end surfaces of the special fixture 3, and fastening and fixing;
4. placing the special fixture 3 on the circular workbench 2, and concentrically aligning the special fixture 3 and the circular workbench 2;
5. after the alignment on the circular workbench 2 is finished, the height position of the cutter plate 7 is adjusted to enable the rotation center of the elbow cutter 5 and the circle center of the end face of the workpiece 4 to be on the same line;
6. the rectangular workbench 1 moves to an elbow cutter 5 at one side, and an inner hole is machined through rotation of the circular workbench 2;
7. after the machining is finished, the circular workbench 2 is rotated and withdrawn;
8. the rectangular workbench 1 moves to the elbow cutter 5 at the other side, and an inner hole is processed by rotating the circular workbench 2;
9. after the machining is finished, the circular workbench 2 is rotated and withdrawn;
10. thus, the processing of the inner hole of the elbow with 180 degrees is finished.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (3)
1. The utility model provides a cutter of elbow hole within 180 of processing, includes rectangle workstation (1), special fixture (3), elbow cutter (5) and hydraulic oil station (9), its characterized in that: the upper surface of the rectangular workbench (1) is provided with a rotatable circular workbench (2), the circular workbench (2) is provided with a special clamp (3), the special clamp (3) is in an arc block shape, the radian of the special clamp (3) for the arc block is the same as that of a workpiece, and the upper surface is provided with a concave arc groove with the same radian and outer diameter as that of the workpiece (4); an upright post (8) is arranged on the long edge of one side of the rectangular workbench (1), a cutting board (7) capable of moving up and down is arranged on the surface, close to the circular workbench (2), of the upright post (8), two cutter bases (6) are arranged on two sides of the cutting board (7), the cutter bases (6) are trapezoidal in shape, the elbow cutters (5) are arranged on the cutter bases (6), and the hydraulic oil station (9) is connected with the cutter bases (6);
the elbow cutter (5) consists of a cutter bar (12), a cutter frame (11), a blade (10), a hydraulic motor (13) and a hydraulic pipeline (14); the cutter bar (12) is a hollow arc-shaped cylinder, the cutter frame (11) is arranged at one end face of the cutter bar (12), the cutter frame (11) is a cylinder with the radius smaller than that of the cutter bar (12) by 5mm, grooves for fixing the blades (10) are oppositely arranged on the circumference of the cylinder, the two blades (10) are arranged at the opposite grooves of the cutter frame and are fixed in a staggered manner in parallel, and the cutter point is outward; the hydraulic motor (13) is fixedly arranged in the cutter bar (12) and connected with the lower surface of the cutter rest (11), the cutter rest (11) rotates along with the hydraulic motor (13), the hydraulic pipeline (14) is connected with the hydraulic motor (13), and the hydraulic pipeline (14) extends out of the other end surface of the cutter bar (12) and penetrates through the cutter base (6) to be connected with the hydraulic oil station (9).
2. The tool for machining the inner hole of the elbow within 180 degrees as claimed in claim 1, wherein: the hydraulic oil station (9) is arranged on the other side of the upright post (8).
3. The tool for machining the inner hole of the elbow within 180 degrees as claimed in claim 1 or 2, wherein: the difference between the two parallel tool nose points of the blade (10) is 0.3mm, and the difference between the back tool feed amounts of the two blades is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043740.8U CN210648608U (en) | 2019-07-05 | 2019-07-05 | Cutter for processing elbow inner hole within 180 degrees |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043740.8U CN210648608U (en) | 2019-07-05 | 2019-07-05 | Cutter for processing elbow inner hole within 180 degrees |
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| Publication Number | Publication Date |
|---|---|
| CN210648608U true CN210648608U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921043740.8U Active CN210648608U (en) | 2019-07-05 | 2019-07-05 | Cutter for processing elbow inner hole within 180 degrees |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676939A (en) * | 2020-12-21 | 2021-04-20 | 东南大学 | Rotary cylinder barrel inner surface polishing equipment |
| CN115945705A (en) * | 2023-02-19 | 2023-04-11 | 安徽工程大学 | Circular-arc-shaped inner surface machining tool |
-
2019
- 2019-07-05 CN CN201921043740.8U patent/CN210648608U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676939A (en) * | 2020-12-21 | 2021-04-20 | 东南大学 | Rotary cylinder barrel inner surface polishing equipment |
| CN115945705A (en) * | 2023-02-19 | 2023-04-11 | 安徽工程大学 | Circular-arc-shaped inner surface machining tool |
| CN115945705B (en) * | 2023-02-19 | 2023-08-04 | 安徽工程大学 | Circular arc-shaped inner surface machining cutter |
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