CN115870562B - Cutting anti-falling device and barrel cutting method - Google Patents
Cutting anti-falling device and barrel cutting method Download PDFInfo
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- CN115870562B CN115870562B CN202310213834.XA CN202310213834A CN115870562B CN 115870562 B CN115870562 B CN 115870562B CN 202310213834 A CN202310213834 A CN 202310213834A CN 115870562 B CN115870562 B CN 115870562B
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Abstract
The invention relates to the field of turning equipment, in particular to a cutting anti-falling device and a barrel part cutting method, wherein the cutting anti-falling device comprises a clamping unit, and the clamping unit comprises a base, an acting force rod, a locking screw rod and a movable claw; the base is provided with a guide hole, an adjusting hole and a chute; the acting force rod is sequentially provided with a sliding rail section, an avoidance section and a clamping section along the length direction of the acting force rod; the sliding rail section is movably arranged in the guide hole; the locking screw rod is rotationally arranged in the adjusting hole; the movable claw is arranged in the sliding groove in a sliding way, and can be controlled to be far away from or close to the acting force rod when the locking screw rod rotates. Through the design of this structure can prevent at the in-process of cutting section of thick bamboo spare part that the surplus material drops, avoided the potential safety hazard.
Description
Technical Field
The invention relates to the field of turning equipment, in particular to a cutting anti-falling device and a barrel cutting method.
Background
With the rapid development of the aerospace field, the pressure vessel made of the large forging is more and more widely applied, and compared with the coiled plate welding technology, the structure strength of the large forging is better because the circumferential wall of the large forging is not provided with a welding line. Because large-scale forging is integrated into one piece, in order to satisfy the user demand, need cut large-scale forging generally, when cutting, need place large-scale forging on the revolving stage, the revolving stage drives large-scale forging and rotates, and further, cuts off large-scale forging through the cutter.
In the process of cutting the large forging, since the large forging is heavy in weight and the large forging is in a rotated state at the time of cutting, the cut portion of the large forging is easily dropped by centrifugal force, thereby causing a safety hazard.
Disclosure of Invention
The present invention aims to solve at least one technical problem in the background art, and therefore, in a first aspect, the present invention provides a cutting anti-falling device. Can prevent that the clout from droing at the in-process of cutting section of thick bamboo spare, avoid the potential safety hazard.
In a second aspect, the present invention provides a method for cutting a cylindrical member, where the method uses the cutting anti-drop device of the first aspect to cut the cylindrical member, and the method improves the operation safety, and has high automation degree and better processing quality.
An embodiment of the present invention provides a cutting anti-falling device, including a clamping unit, the clamping unit including:
the base is provided with a guide hole, an adjusting hole and a sliding groove;
the acting force rod is sequentially provided with a sliding rail section, an avoiding section and a clamping section along the length direction of the acting force rod, the sliding rail section is movably arranged in the guide hole, and the sliding rail section moves along the length direction of the sliding rail section; the avoidance section protrudes towards a direction away from the base; the circumference wall of the barrel piece is provided with an annular cutting groove which divides the barrel piece into a cutting part positioned at the upper part of the annular cutting groove and a main body part positioned at the lower part of the annular cutting groove; the part of the sliding rail section at the lower end of the base is abutted against the inner peripheral wall of the cutting part, and the clamping section is abutted against the inner peripheral wall of the main body part;
the locking screw rod is rotationally arranged in the adjusting hole;
the movable claw is arranged in the chute in a sliding way; when the locking screw rod rotates, the movable claw can be driven to move away from or close to the acting force rod, and the movable claw abuts against the outer peripheral wall of the cutting part.
According to some embodiments of the invention, the sliding rail section is provided with a guiding surface, and the base is provided with the guiding hole corresponding to the outer contour of the sliding rail section.
According to some embodiments of the invention, the movable claw comprises a sliding block part, the sliding block part is slidably arranged in the sliding groove, one end of the sliding block part is provided with an arc-shaped groove, threads are arranged in the arc-shaped groove, and the other end of the sliding block part is provided with a clamping part.
According to some embodiments of the invention, the clamping portion is provided with an arcuate surface on a side thereof adjacent to the force lever.
According to some embodiments of the invention, the arcuate surfaces are provided with anti-slip teeth.
According to some embodiments of the invention, the device further comprises a jacking mechanism, wherein the jacking mechanism is provided with a supporting ring, and the lower end of the supporting ring is provided with a telescopic assembly; the support ring comprises a first position state and a second position state, wherein the first position state is that the support ring is abutted against the acting force rod, the second position state is that the support ring is separated from the acting force rod, and the telescopic assembly can drive the support ring to change between the first position state or the second position state when moving.
According to some embodiments of the invention, the support ring is provided with a groove, which limits the lower end of the force bar.
According to a second aspect of the present invention, a method for cutting a cylindrical member, the cutting anti-drop device includes a clamping unit and a jack mechanism;
the barrel cutting method comprises the following steps:
s10: the lower end of the barrel is arranged on a rotary table of a machine tool, and N clamping units are arranged at the upper end of the barrel; wherein N is more than or equal to 3;
s20: based on the height of the annular groove, the vertical height of the acting force rod is adjusted, so that the central position of the avoidance section of the clamping unit is the same as the central position of the annular groove;
s30: detecting the distribution position of the clamping unit on the barrel by a detection mechanism based on rotation of a rotary table;
s40: based on the distribution position of the clamping units, obtaining a region with the greatest distribution density of the clamping units on the barrel, and discharging cutters from axially symmetrical positions of the region with the greatest distribution density of the clamping units on the barrel;
s50: the machine tool collects the feed amount of the cutter and the rotation cycle number of the rotary table to judge the depth of the annular cutting groove, and when the barrel is about to be cut off, a supporting ring of the jacking mechanism ascends and is abutted against the lower end of the acting force rod; when the cartridge is completely severed, the support ring descends, and the support ring disengages the lower end of the force bar.
According to some embodiments of the invention, in step S10, at least 6 clamping units are provided, wherein 4 clamping units are equally arranged, and all the rest of the clamping units are provided within 1/4 circumference of the center of any one of the equally arranged clamping units.
According to some embodiments of the invention, in step S50, when H-s×t is less than or equal to 1.2T, the telescopic assembly starts to move, and the support ring is controlled to abut against the lower end of the acting rod, where H is the wall thickness of the barrel, T is the feed amount of the cutter, and S is the number of rotation cycles of the rotary table.
According to the embodiment of the invention, at least the following technical effects are achieved:
according to the embodiment of the invention, the clamping unit is arranged at the upper end of the barrel, and comprises a base, an acting force rod, a locking screw rod and a movable claw, wherein the base is provided with a guide hole, an adjusting hole and a sliding groove; the acting force rod is provided with a sliding rail section, an avoiding section and a clamping section; the sliding rail section is movably arranged in the guide hole, the avoiding section can avoid the false cutting of the cutter, and the clamping section is abutted against the inner peripheral wall of the barrel part; the side of the movable claw, which is close to the acting force rod, is abutted against the outer peripheral wall of the barrel, and in the embodiment, the barrel is divided into a cutting part positioned at the upper part of the annular cutting groove and a main body part positioned at the lower part of the annular cutting groove according to the annular cutting groove; the slide rail section is located the part butt excision portion inner peripheral wall of the lower extreme of base, and the centre gripping section butt inner peripheral wall of main part, on the periphery wall of movable claw butt excision portion, through the combined action of movable claw and centre gripping section, the centre gripping unit can firmly be fixed on the periphery wall of barrel part, keeps the axis of excision portion and the axis collineation of main part, avoids at revolving stage rotatory in-process, and excision portion slides from the main part to can improve the excision quality of ring grooving, improve the surface quality of section.
According to the embodiment of the invention, the guide surface is arranged on the sliding rail section, so that the acting force rod can be prevented from rotating in the process of adjusting the base up and down, the concave part of the avoiding section is kept close to the annular cutting groove, and the convex part is kept away from the annular cutting groove.
According to the embodiment of the invention, the movable claw is in threaded connection with the locking screw rod through the threads in the arc-shaped groove, and can be driven to be close to or far away from the acting force rod in the rotating process of the locking screw rod.
According to the embodiment of the invention, the arc-shaped surface is arranged on one side, close to the acting force rod, of the clamping part, and the contact area between the clamping part and the peripheral wall of the barrel can be increased by arranging the arc-shaped surface on the clamping part of the movable claw, so that the stability of the clamping unit is improved.
According to the embodiment of the invention, the anti-slip teeth are arranged on the arc-shaped surface, so that the friction force between the clamping part and the outer peripheral wall of the barrel part can be improved, and the stability of the clamping unit is further improved.
According to the embodiment of the invention, in the annular cutting process, since the cutter is required to cut out part of the material on the barrel to form the annular cutting groove, in order to avoid the tendency of the barrel to incline towards the cut-off part when the part of the barrel is cut off, the stress concentration at the non-cut-off part is caused, therefore, in the embodiment, the supporting mechanism is also provided, and the cutting part is supported by the supporting ring of the supporting mechanism to abut against the lower end of the supporting clamping unit. Therefore, the problem of stress concentration of the non-cut part after the annular groove part is cut is avoided.
According to the embodiment of the invention, when the support ring of the jacking mechanism is abutted against the lower end of the supporting clamping unit, the lower end of the acting force rod can be limited by arranging the groove on the support ring, so that the acting force rod is prevented from tilting due to uneven distribution of supporting force in the supporting process.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of a clamping unit according to the present invention;
FIG. 4 is a schematic cross-sectional view of the clamping unit of the present invention;
FIG. 5 is a schematic view of the moveable jaw of the present invention;
in the figure:
100-clamping units, 110-bases, 111-guide holes, 112-adjusting holes, 113-sliding grooves, 120-acting rods, 121-sliding rail sections, 1211-guide surfaces, 122-avoiding sections, 123-clamping sections, 130-locking screw rods, 140-movable claws, 141-sliding block parts, 142-arc-shaped grooves, 143-clamping parts, 1431-arc-shaped surfaces and 1432-anti-slip teeth;
200-supporting structure, 210-supporting ring, 211-groove and 220-telescopic component;
300-barrel, 301-annular slot, 310-cut-out, 320-main body;
400-rotating table, 410-cutter.
Detailed Description
The present disclosure will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are merely to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present invention and do not imply any limitation on the scope of the invention.
Fig. 1 schematically shows a structural view of the present invention. As shown in fig. 1, the present embodiment discloses a cutting anti-falling device provided by the present invention, which includes a clamping unit 100, wherein the clamping unit 100 includes a base 110, a force bar 120, a locking screw 130, and a movable jaw 140; the base 110 is provided with a guide hole 111, an adjusting hole 112 and a chute 113; the acting force rod 120 is sequentially provided with a sliding rail section 121, an avoiding section 122 and a clamping section 123 along the length direction of the acting force rod; the sliding rail section 121 is movably arranged in the guide hole 111 and moves along the length direction of the sliding rail section 121; the avoiding section 122 protrudes in a direction away from the base 110, and specifically, the avoiding section 122 is a U-shaped rod section; the locking screw 130 is rotatably disposed in the adjustment hole 112; the movable jaw 140 is slidably disposed in the chute 113, and can control the movable jaw 140 to move away from or toward the force lever 120 when the locking screw 130 is rotated. Specifically, the clamping unit 100 is provided on the cartridge 300, and the cartridge 300 is divided into a cut-out portion 310 at an upper portion of the annular groove 301 and a main body portion 320 at a lower portion of the annular groove 301 according to the position of the annular groove 301 on the cartridge 300; the part of slide rail section 121 that is located the lower extreme of base 110 butt excision 310 inner peripheral wall, holding section 123 butt inner peripheral wall of main part 320, movable jaw 140 butt is on the outer peripheral wall of excision 310, through the combined action of movable jaw 140 and holding section 123, clamping unit 100 can firmly be fixed on the perisporium of barrel 300, keep the axis of excision 310 and the axis collinearly of main part 320, avoid at revolving stage 400 rotatory in-process, excision 310 slides from main part 320, and can improve the excision quality of ring grooving 301, improve the surface quality of section.
In some embodiments of the present invention, the slide rail segment 121 is provided with a guiding surface 1211, and the guiding hole 111 is provided with a guiding hole 111 corresponding to the outer contour of the slide rail segment 121. By providing the guide surface 1211 on the slide rail section 121, the force lever 120 can be prevented from rotating during the up-down adjustment of the base 110, and the concave portion of the escape section is kept close to the annular groove 301, and the convex portion is kept away from the annular groove 301. Specifically, in this embodiment, the avoidance section is a U-shaped pipe section. In the present embodiment, the force bar 120 may be controlled to move up and down by a cylinder connected to the upper end of the slide rail section 121; or a limiting hole is formed in the base 110 in a direction perpendicular to the axis of the guide hole 111, and the acting force rod 120 is kept fixed after the acting force rod 120 is adjusted to a proper position by installing a base bolt in the limiting hole to abut against the acting force rod 120.
In some embodiments of the present invention, the moveable jaw 140 includes a slider portion 141, the slider portion 141 is slidably disposed in the chute 113, one end of the slider portion 141 is provided with an arc-shaped groove 142, threads are disposed in the arc-shaped groove 142, and the other end of the slider portion 141 is provided with a clamping portion 143. In the present embodiment, the threads in the arc groove 142 may be provided as rectangular threads; the locking screw 130 is correspondingly arranged as a rectangular threaded screw, and the rectangular threads can bear larger clamping force relative to the common threads. In this embodiment, the locking screw 130 is rotatably disposed in the base 110, and when the locking screw 130 rotates, the movable claw 140 can be controlled to be close to or far away from the acting rod 120, and one end of the locking screw 130 far away from the base 110 can be set as a bolt head, and the locking screw 130 is manually rotated; one end of the locking screw 130 may be connected through a motor transmission, and the rotation of the locking screw 130 may be automatically controlled through the motor, thereby realizing the automatic control of the clamping unit 100.
In some embodiments of the present invention, the clamping portion 143 is provided with an arcuate surface 1431 on a side proximate the force lever 120. By providing the arc surface 1431 on the grip portion 143 of the movable claw 140, the contact area of the grip portion 143 with the outer peripheral wall of the tubular member 300 can be increased, and the stability of the grip unit 100 can be further improved.
In some embodiments of the present invention, anti-slip teeth 1432 are provided on the arcuate surface 1431. By providing the anti-slip teeth 1432 on the arc surface 1431, the friction force between the grip portion 143 and the outer circumferential wall of the cartridge 300 can be increased, and the stability of the grip unit 100 can be further improved.
In some embodiments of the present invention, the support mechanism 200 further includes a support ring 210, the support ring 210 is provided with a telescopic assembly 220 at the lower end of the support ring 200, and the support ring 210 includes a first position state and a second position state, wherein the first position state is that the support ring 210 abuts against the acting rod 120, the second position state is that the support ring 210 is separated from the acting rod 120, and the telescopic assembly 220 can drive the support ring 210 to change between the first position state or the second position state when moving. Specifically, the telescoping assembly 220 is a hydraulic cylinder or an electric cylinder. In the ring cutting process, since the cutter 410 is required to cut out a part of the material on the cartridge 300 to form the ring cutting groove 301, in order to avoid that the cartridge 300 has a tendency to tilt toward the cut-off portion when a part of the cartridge 300 is cut off, resulting in stress concentration at the non-cut-off portion, in the present embodiment, the jacking mechanism 200 is provided, and the cut-off portion 310 is lifted up by the support ring 210 of the jacking mechanism 200 abutting against the lower end of the support clamping unit 100. Thereby avoiding the problem of stress concentration in the uncut portion after the annular groove 301 is partially cut.
In some embodiments of the present invention, the support ring 210 is provided with a groove 211. When the support ring 210 of the jacking mechanism 200 abuts against the lower end of the supporting clamping unit 100, the lower end of the acting force rod 120 can be limited by arranging the groove 211 on the support ring 210, so that the acting force rod 120 is prevented from tilting due to uneven distribution of supporting force in the supporting process.
A method of cutting a cartridge 300 according to an embodiment of the second aspect of the present invention includes the steps of:
s10: mounting the lower end of the cartridge 300 on the rotary table 400 of the machine tool, and arranging the N clamping units 100 on the upper end of the cartridge 300; wherein N is more than or equal to 3; specifically, the N clamping units 100 are arranged at the upper end of the cartridge 300, and can form a multi-point limit, so that the axis of the cut-out 310 and the axis of the main body 320 are kept collinear during the circular cutting process.
S20: based on the height of the annular slit 301, the vertical height of the force lever 120 is adjusted so that the center position of the avoiding section 122 is the same as the center position of the annular slit 301; specifically, the height of the annular groove 301 is determined by parameters set by a machine tool; then, the acting force rod 120 is adjusted to enable the center position of the avoiding section 122 to be close to the annular cutting groove 301, so that the cutter 410 is prevented from generating false cutting during operation;
s21: the locking screw 130 is driven to rotate by a motor, so that the movable claw 140 approaches the acting force rod 120, and the clamping unit 100 is clamped and fixed.
S30: detecting the distribution position of the clamping unit 100 on the cartridge 300 by the detection mechanism based on the rotation of the rotary table 400; specifically, the machine tool is started, the rotary table 400 starts to perform preheating rotation, and the distribution position of the clamping unit 100 on the barrel 300 is detected by the detection mechanism of the machine tool, in this embodiment, the base 110 on the barrel 300 may be scanned by a manner that a laser detection element is provided on the machine tool, so as to implement a detection function; a signal generating device may be provided on the base 110 to transmit a position signal of the clamping unit 100 to the inside of the machine tool.
S40: based on the distribution position of the clamping units 100, obtaining the region with the greatest distribution density of the clamping units 100 on the barrel 300, and discharging the cutter 410 from the axially symmetrical position of the region with the greatest distribution density of the clamping units 100 on the barrel 300; specifically, in this step, when the cutter 410 starts cutting the cartridge 300, the cartridge 300 has a tendency to tilt toward the cut portion, resulting in concentration of stress at the uncut portion, and therefore, by cutting down at the axially symmetrical position of the region where the distribution density of the clamping unit 100 is greatest, the cut portion is started from the axially symmetrical position of the region where the distribution density of the clamping unit 100 is greatest, and in the process of complete cutting, the tilting tendency of the cartridge 300 at the region where the distribution density of the clamping unit 100 is greatest, and therefore, concentricity of the cut portion 310 and the main body portion 320 can be ensured by providing the plurality of clamping units 100 at the position where the tilting tendency is greatest, thereby improving the cut quality of the cut groove, and improving the surface quality of the cross section.
S50: the machine tool collects the feed amount of the cutter 410 and the rotation cycle number of the rotary table 400 to judge the depth of the annular groove 301, when the barrel 300 is cut off, the supporting ring 210 of the propping mechanism 200 rises, and the supporting ring 210 is abutted against the lower end of the acting force rod 120; when the cartridge 300 is completely cut, the support ring 210 descends and the support ring 210 is disengaged from the lower end of the force lever 120. Since the cutter 410 is required to cut out a part of the material on the cartridge 300 to form the annular groove 301, in order to avoid that the cartridge 300 has a tendency to tilt toward the cut-off portion when a part of the cartridge 300 is cut off, resulting in stress concentration at the non-cut-off portion, in the present embodiment, a jacking mechanism 200 is further provided, and the cut-out portion 310 is lifted up by the support ring 210 of the jacking mechanism 200 abutting against the lower end of the support clamping unit 100. Thereby avoiding the problem of stress concentration in the uncut portion after the annular groove 301 is partially cut.
In some embodiments of the present invention, in step S10, at least 6 clamping units 100 are provided, wherein 4 clamping units 100 are equally arranged, and the remaining clamping units 100 are provided within 1/4 circumference of the center of any one of the clamping units 100. To form a region of greatest distribution density of the clamping units 100.
In some embodiments of the present invention, in step S50, when H-s×t is less than or equal to 1.2T, the telescopic assembly 220 starts to move, and the support ring 210 is controlled to abut against the lower end of the acting rod 120, where H is the wall thickness of the barrel 300, T is the feeding amount of the cutter 410, and S is the rotation number of the rotary table 400.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a cutting anti-drop device which characterized in that includes the clamping unit, the clamping unit includes:
the base is provided with a guide hole, an adjusting hole and a sliding groove;
the acting force rod is sequentially provided with a sliding rail section, an avoiding section and a clamping section along the length direction of the acting force rod, the sliding rail section is movably arranged in the guide hole, and the sliding rail section moves along the length direction of the sliding rail section; the avoidance section protrudes towards a direction away from the base; the circumference wall of the barrel piece is provided with an annular cutting groove which divides the barrel piece into a cutting part positioned at the upper part of the annular cutting groove and a main body part positioned at the lower part of the annular cutting groove; the part of the sliding rail section at the lower end of the base is abutted against the inner peripheral wall of the cutting part, and the clamping section is abutted against the inner peripheral wall of the main body part;
the locking screw rod is rotationally arranged in the adjusting hole;
the movable claw is arranged in the chute in a sliding way; when the locking screw rod rotates, the movable claw can be driven to move in a direction away from or close to the acting force rod, and the movable claw abuts against the outer peripheral wall of the cutting part;
the supporting mechanism is provided with a supporting ring, and the lower end of the supporting ring is provided with a telescopic component; the support ring comprises a first position state and a second position state, wherein the first position state is that the support ring is abutted against the acting force rod, the second position state is that the support ring is separated from the acting force rod, and the telescopic assembly can drive the support ring to change between the first position state or the second position state when moving.
2. The cutting anti-drop device of claim 1, wherein the slide rail segment is provided with a guide surface, and the base is provided with the guide hole corresponding to the outer contour of the slide rail segment.
3. The cutting anti-drop device according to claim 1, wherein the movable claw comprises a slider portion slidably disposed in the chute, an arc-shaped groove is provided at one end of the slider portion, a thread is provided in the arc-shaped groove, and a clamping portion is provided at the other end of the slider portion.
4. A cutting anti-drop device as claimed in claim 3, wherein the clamping portion is provided with an arcuate surface on a side thereof adjacent the force bar.
5. The cutting anti-slip device of claim 4, wherein the arcuate surface is provided with anti-slip teeth.
6. The cutting anti-drop device of claim 1, wherein the support ring is provided with a groove that limits the lower end of the force bar.
7. A method of cutting a cartridge using the cut-off prevention device of claim 6, wherein the cut-off prevention device comprises a clamping unit and a jack mechanism;
the barrel cutting method comprises the following steps:
s10: the lower end of the barrel is arranged on a rotary table of a machine tool, and N clamping units are arranged at the upper end of the barrel; wherein N is more than or equal to 3;
s20: based on the height of the annular groove, the vertical height of the acting force rod is adjusted, so that the central position of the avoidance section of the clamping unit is the same as the central position of the annular groove;
s30: detecting the distribution position of the clamping unit on the barrel by a detection mechanism based on rotation of a rotary table;
s40: based on the distribution position of the clamping units, obtaining a region with the greatest distribution density of the clamping units on the barrel, and discharging cutters from axially symmetrical positions of the region with the greatest distribution density of the clamping units on the barrel;
s50: the machine tool collects the feed amount of the cutter and the rotation cycle number of the rotary table to judge the depth of the annular cutting groove, and when the barrel is about to be cut off, a supporting ring of the jacking mechanism ascends and is abutted against the lower end of the acting force rod; when the cartridge is completely severed, the support ring descends, and the support ring disengages the lower end of the force bar.
8. The cartridge cutting method according to claim 7, wherein in step S10, the gripping units are provided with at least 6, 4 of which are equally arranged, and the remaining gripping units are all provided within 1/4 circumference of the center of the gripping unit of any one of the equally arranged gripping units.
9. The method of claim 7, wherein in step S50, when H-s×t is less than or equal to 1.2T, the telescopic assembly starts to move, and the support ring is controlled to abut against the lower end of the acting rod, where H is the wall thickness of the cartridge, T is the feed amount of the cutter, and S is the number of rotation cycles of the rotary table.
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| CN202310213834.XA CN115870562B (en) | 2023-03-08 | 2023-03-08 | Cutting anti-falling device and barrel cutting method |
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| CN202310213834.XA CN115870562B (en) | 2023-03-08 | 2023-03-08 | Cutting anti-falling device and barrel cutting method |
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| CN115870562A (en) | 2023-03-31 |
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