CN110280958B - Part inclination is stepless regulation anchor clamps on a large scale - Google Patents
Part inclination is stepless regulation anchor clamps on a large scale Download PDFInfo
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- CN110280958B CN110280958B CN201910495787.6A CN201910495787A CN110280958B CN 110280958 B CN110280958 B CN 110280958B CN 201910495787 A CN201910495787 A CN 201910495787A CN 110280958 B CN110280958 B CN 110280958B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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Abstract
The invention discloses a part inclination angle large-range stepless adjusting clamp, belongs to the field of machining clamps, and relates to a part inclination angle large-range stepless adjusting clamp for laser machining. The fixture consists of a positioning and clamping unit, an inclination angle adjusting unit, a lead screw fixing unit and a number indicating unit. The sliding block is driven by the lead screw to move and rotate with the supporting plate, the inclination angle of the working platform is adjusted, large-range stepless adjustment of the inclination angle of the flat part for laser processing is achieved, and the position of the inclination adjusting unit is fixed through the cam. And the flat part is positioned and clamped through the positioning and clamping unit. Based on the relation between the inclination angle of the working platform and the number of turns of the hand wheel, the screw pitch of the lead screw and the geometric dimensions of all parts of the inclination adjusting unit, the inclination angle of the working platform is accurately read through the number indicating unit. The invention is based on strict geometric relation calculation and ingenious structural design, and has the advantages of comprehensive functions, compact structure, accuracy and reliability.
Description
Technical Field
The invention belongs to the field of machining clamps, and relates to a part inclination angle large-range stepless adjusting clamp for laser machining.
Background
A high-performance complex curved surface broadband antenna is a key part in a high-speed aircraft in the field of aerospace, and is mostly of a deep cavity structure, and the inner wall and the outer wall of the broadband antenna are complex in structure with lines. The part has high requirement on the quality of the strip line edge and strict requirement on the corresponding relation between the strip line positions of the inner wall and the outer wall, and good design matching and process consistency among process parameters must be ensured. However, in the laser processing of the parts, the light path interference is easily caused due to the limited space, and the influence rule of the processing parameters of the laser oblique incidence processing is unclear, so that the heat affected zone is enlarged, the quality of the ablation section is reduced, and the material removal amount is difficult to ensure. Therefore, the laser beam oblique incidence processing process rule gradually becomes a hot point of research at home and abroad. However, multivariable disturbance errors such as laser scanning path difference, curved surface curvature sudden change and the like are easily introduced by directly adopting a molded deep cavity complex part as a research object, and a flat plate part capable of adjusting the inclination angle in a large range becomes an ideal part for exploring the processing rule of laser beam oblique incidence. However, the common inclination angle adjusting clamp for engineering mostly has the limitations of limited adjusting range, insufficient positioning accuracy, inclination angle jump adjustment and the like. Therefore, the design of the large-range stepless adjustment clamp for the inclination angle of the flat part for laser processing becomes a necessary link for exploring the processing rule of oblique incidence of the laser beam, and has important practical application significance for improving the service performance of the high-performance complex curved surface broadband antenna in the aerospace field.
Disclosure of Invention
The invention provides a part inclination angle large-range stepless adjusting clamp for laser processing, aiming at overcoming the defects of the prior art. The clamp can realize the positioning and clamping of the flat plate part through a positioning and clamping unit consisting of a clamping device and a positioning block; the large-range stepless adjustment and position stabilization of the inclination angle of the flat plate part are realized by adjusting an inclination angle adjusting unit consisting of a screw rod, a supporting plate, a gear, a sliding block, a screw rod sleeve and the like and a screw rod fixing unit consisting of a fastening block, a handle and a handle sleeve. Through the number indicating unit consisting of the angle scale and the number reading plate, the accurate reading of the inclination angle of the flat plate part is realized.
The technical scheme adopted by the invention is that the part inclination angle large-range stepless adjustment fixture is characterized by comprising a positioning clamping unit, an inclination angle adjustment unit, a screw fixing unit and a number indicating unit;
in the positioning and clamping unit, a positioning block 1 is fixedly arranged on a working platform 6 through a positioning pin 2 and a positioning bolt 3; the two clamping devices 4 are respectively arranged at the upper left corner and the lower right corner of the working platform 6 in a diagonal manner through fixing bolts 5; two grooves are processed in a supporting seat 4d of the clamping device 4, and two clamping springs 4c are respectively arranged in the grooves; the clamping block 4a is in a large shape, the head of the clamping block is in contact with a processed flat plate part, the tail of the clamping block is in contact with a clamping spring 4c, and a pressing block 4e is fixed on a supporting seat 4d through a fastening screw 4b to ensure that the clamping block 4a can stretch back and forth in a groove to clamp the flat plate part;
in the inclination angle adjusting unit, the structure of the left support plate 30: the upper end of the left supporting plate 30 is provided with a key shaft hole 30b, the lower end is provided with a pin shaft hole 30d, the middle of the left end is provided with a left lower end groove 30e, and the middle of the right end is provided with a right upper end groove 30 f; a round rectangular through hole 30a is formed in the middle of the upper surface of the left support plate 30, and a through hole 30c is formed in the side surface of the left support plate; the left support plate 30 and the left sliding block 18 are fixedly connected through a pin shaft hole 30d by a pin shaft 15;
structure of the connection platform 24: the connecting platform 24 is composed of an upper flat plate 24a and a middle plate 24e, and the middle plate 24a and the middle plate 24e are vertical to each other; an upper threaded hole 24a is processed on the upper flat plate 24a, and the connecting platform 24 is fixedly connected with the working platform 6 through a screw 25; the middle part of the middle plate 24e is provided with a positioning surface 24c, and the middle plate 24e is provided with a lower threaded hole 24 d; the middle plate 24e is inserted into the rounded rectangular through hole 30a of the left support plate 30 and contacts the upper surface of the left support plate 30 through the positioning surface 24c to define a position, and the connection platform 24 is fixed on the left support plate 30 by a screw 31 penetrating through the through hole 30c and the lower screw hole 24d of the connection platform 24;
structure of the right support plate 7: the upper end of the right supporting plate 7 is provided with a shaft hole 7c with a key, the lower end is provided with a pin shaft hole 7b, the middle of the right end is provided with a right end groove 7d, the middle of the left end is provided with a left end groove 7e, and the upper surface of the right supporting plate 7 is provided with a threaded hole 7 a; the right support plate 7 and the right sliding block 14 are fixedly connected through a pin shaft hole 7b by a pin shaft 15; and the axial position is limited by a circlip A16;
the upper ends of the right supporting plate 7 and the left supporting plate 30 pass through the shaft hole with the key 7c and the shaft hole with the key 30b by using two key groove shafts 27 respectively, then pass through the central holes of the two gears 29 and the through holes at the two ends of the connecting rod 28, so that the two gears are correctly meshed, and the axial position is limited by using the elastic retainer ring 26, thereby ensuring that no relative motion exists between the gears and the two supporting plates;
in the screw rod fixing unit, bolt holes are processed on a right sleeve seat 11 and a left sleeve seat 19 and are respectively fixed at the left end part and the right end part of a base 20 through sleeve seat bolts 13; a lead screw 17 provided with a right sliding block 14 and a left sliding block 18 is arranged in central holes of a right sleeve seat 11 and a left sleeve seat 19, a hand wheel 12 is arranged at the right end of the lead screw 17, and the lead screw 17 is driven to rotate by the hand wheel 12; the screw 17 rotates to move the right sliding block 14 and the left sliding block 18 simultaneously, so that the right supporting plate 7 and the left supporting plate 30 are driven to rotate, and the working platform 6 is inclined;
a threaded hole 21b, a pin hole 21c and a through hole 21d are processed on the handle sleeve seat 21, and two guide posts 21a are installed; the handle 21 passes through the through hole 21d of the handle sleeve seat 21 and is connected with the cam 32; the fastening block 23 is arranged on the cam 32, a through hole on the fastening block 23 is in clearance fit with the guide column 21a, and a semicircular groove is processed on the upper surface of the fastening block 23 and is in clearance fit with the screw 17; when the work of the workpiece inclination angle adjusting unit is finished, the handle 22 is rotated, the cam 32 pushes the fastening block 23 to move upwards to lock the screw rod 17, and the position of the inclination angle adjusting unit is fixed;
in the number reading unit, a number reading plate 9 is provided with a number reading hole and is arranged on a right support plate 7 through a bolt 8; the angle scale 10 is mounted on the right sliding block 14 through bolts;
the scale is marked with angle scales, the angle marking range and the interval are determined by the number of turns n of the hand wheel 12, the pitch p of the lead screw 17 and the geometric dimension of each part of the inclination adjusting unit, and the two ends of the right supporting plate 7 are taken from the pin shaft holes 7b and the shaft holes 7c with keysThe center distance is l, when the working platform 6 is in a horizontal state, the distance between the center of the pin shaft hole 7b of the right supporting plate 7 and the center of the shaft hole 7c with the key in the vertical direction is h0When the working platform 6 is in the horizontal state, the included angle theta between the right supporting plate 7 and the horizontal direction0Comprises the following steps:
after the hand wheel 12 is rotated for n circles, the included angle theta between the right support plate 7 and the horizontal direction is as follows:
because left support plate 30 and right support plate 7 are symmetrical structure, and the two turned angle size equals, and work platform 6 is fixed on board platform 33 and left support plate 30, so work platform 6 equals the angle that left support plate 30 rotated with the contained angle of horizontal direction, and work platform 6's angle of inclination α is promptly:
α＝θ-θ0(3)
taking equations (1) and (2) into equation (3), the relationship between the inclination angle α of the work platform 6 and each parameter is obtained as follows:
when the right slide block 14 and the left slide block 18 move to the center of the screw, the inclination angle of the working platform 6 reaches the maximum value, and at this time, the center distance between the key shaft holes at the upper ends of the left support plate 30 and the right support plate 7 is d1The center distance of the lower end pin shaft hole is d2The maximum value theta of the included angle between the right supporting plate 7 and the horizontal directionmaxComprises the following steps:
the maximum inclination angle α of the work platform 6maxComprises the following steps:
αmax＝θmax-θ0(6)
thus, the tilt angle adjustment interval α achieved by the clamp is:
α＝[0,αmax](7)
the inclination angle of the working platform is accurately read through the number indicating unit.
The invention has the advantages that the adjusting clamp can drive the sliding block to move and the supporting plate to rotate through the lead screw, the inclination angle of the working platform is adjusted, the large-range stepless adjustment of the inclination angle of the flat plate part for laser processing is realized based on strict geometric relation calculation and ingenious structural design, and the position of the inclination adjusting unit is fixed through the cam; positioning and clamping the flat plate part through a positioning and clamping unit; based on the relation between the inclination angle of the working platform and the number of turns of the hand wheel, the screw pitch of the lead screw and the geometric dimensions of all parts of the inclination adjusting unit, the inclination angle of the working platform is accurately read through the number indicating unit. The clamp can realize large-range stepless adjustment of the inclination angle of the flat plate part, accurately read the size of the inclination angle and has important practical application significance for exploring the rule of the laser oblique incidence processing technology. Compared with the existing inclination angle adjusting clamp, the clamp is based on strict geometric relation calculation and ingenious structural design, and is comprehensive in function, compact in structure, accurate and reliable.
Drawings
Fig. 1 is an axonometric view of a jig for the wide-range stepless adjustment of the inclination angle of a part, and fig. 2 is a front view of the jig for the wide-range stepless adjustment of the inclination angle of a part. Wherein, 1-a positioning block, 2-a positioning pin, 3-a positioning bolt, 4-a clamping device, 5-a fixing bolt, 6-a working platform, 7-a right supporting plate, 8-a fastening bolt, 9-a reading plate, 10-an angle scale, 11-a right sleeve seat, 12-a hand wheel, 13-a sleeve seat bolt, 14-a right sliding block, 15-a pin shaft, 16-an elastic retainer ring A, 17-a screw rod, 18-a left sliding block, 19-a left sleeve seat, 20-a base, 21-a handle sleeve seat, 22-a handle, 23-a fastening block, 24-a connecting platform, 25-a supporting plate screw, 26-an elastic retainer ring, 27-a key groove shaft, 28-a connecting rod, 29-a gear, 30-a left supporting plate, 31-connecting platform screw, 32-cam.
Fig. 3 shows the structure of the clamping device 4, wherein 4 a-clamping block, 4 b-fastening screw, 4 c-clamping spring, 4 d-support seat, 4 e-pressing block, 5-fixing bolt.
FIG. 4 is a view of the right support plate 7, wherein 7a is a threaded hole, 7b is a pin hole, 7c is a keyed hole, and 7d is a left end slot. 7 e-right end slot.
FIG. 5 is a view showing the structure of the connection platform 24, wherein 24a is an upper plate, 24b is an upper screw hole, 24c is a positioning surface, 24d is a lower screw hole, and 24e is a middle plate.
FIG. 6 is a view showing the structure of the left support plate 30, wherein 30 a-a rounded rectangular through hole, 30 b-a keyed shaft hole, 30 c-a through hole, 30 d-a pin shaft hole, and 30 e-a left lower end groove. 30 f-upper right end slot.
Fig. 7 shows the structure of the handle sleeve seat 21, wherein 21a is a guide post, 21b is a threaded hole, 21c is a pin hole, and 21d is a through hole.
Detailed Description
The following detailed description of the embodiments of the invention refers to the accompanying drawings and accompanying claims.
Fig. 1 is an isometric view of a part inclination angle large-range stepless adjustment clamp for laser processing according to the embodiment, and fig. 2 is a front view of the part inclination angle large-range stepless adjustment clamp for laser processing. The clamp can drive the sliding block to move and the supporting plate to rotate by the lead screw, adjust the inclination angle of the working platform, realize large-range stepless adjustment of the inclination angle of the flat part for laser processing based on strict geometric relation calculation and ingenious structural design, and fix the position of the inclination adjusting unit by the cam; positioning and clamping the flat plate part through a positioning and clamping unit; based on the relation between the inclination angle of the working platform and the number of turns of the hand wheel, the screw pitch of the lead screw and the geometric dimensions of all parts of the inclination adjusting unit, the inclination angle of the working platform is accurately read through the number indicating unit.
The specific operation steps of the installation and the use of the clamp are as follows:
firstly, the base 20 is fixed on the base by bolts and nuts, and the right sleeve seat 11 and the left sleeve seat 19 are installed on the base 20 by the sleeve seat bolts 13. The right sliding block 14 and the left sliding block 18 are slidably connected with a guide groove of a base 20, and the lead screw 17 is connected to the hand wheel 12, meshed with threaded holes on the right sliding block 14 and the left sliding block 18, and in clearance fit with the right sleeve seat 11 and the left sleeve seat 19. The lower ends of the right support plate 7 and the left support plate 30 are respectively arranged at the upper ends of the right sliding block 14 and the left sliding block 18 through pin shafts 15, and the axial positions are limited by elastic retaining rings A16.
The structure of the right support plate 7 and the left support plate 30 is shown in fig. 4 and 6, the upper ends of the right support plate 7 and the left support plate 30 pass through the shaft hole with key 7c and the shaft hole with key 30b by using two key groove shafts 27 respectively, then pass through the central holes of the two gears 29 and the through holes at the two ends of the connecting rod 28, so that the two gears are correctly meshed, and the axial position is limited by using the elastic retainer ring 26, thereby ensuring that no relative motion exists between the gears and the two support plates;
thirdly, the concrete structure of the connecting platform 24 is as shown in fig. 5, the round-corner rectangular plate 24d on the connecting platform 24 is inserted into the round-corner rectangular through hole on the left support plate 30, and the positioning surface 24b ensures the relative position of the two and is fixed by the screw 31. The work platform 6 is mounted on the attachment platform 24 using screws 25. The hand wheel 12 drives the screw 17 to rotate, and simultaneously moves the right sliding block 14 and the left sliding block 18, so as to drive the right support plate 7 and the left support plate 30 to rotate, thereby realizing the inclination of the working platform 6.
Fourthly, the structure of the handle sleeve seat 21 is as shown in fig. 7, the handle sleeve seat 21 with two guide posts 21a is fixed on the base 20 by using a positioning pin, a bolt and a nut, the handle 22 is connected with the cam 32 through a through hole 21d on the handle sleeve seat 21, the fastening block 23 is installed on the cam 32, the through hole on the fastening block 23 is in clearance fit with the guide posts 21a, and the upper surface of the fastening block 23 is provided with a semicircular groove in clearance fit with the lead screw 17; when the work of the workpiece inclination angle adjusting unit is finished, the handle 22 is rotated, the cam 32 pushes the fastening block 23 to move upwards to lock the screw rod 17, and the position of the inclination angle adjusting unit is fixed; the fixture inclination angle is stable and reliable in the laser processing process.
Fifthly, the positioning block 1 is installed on the working platform 6 by using a positioning pin 2 and a counter bore bolt 3, and the two clamping devices 4 are installed at the upper left corner and the lower right corner of the working platform 6 in a diagonal manner through fixing bolts 5 respectively; the support 4d of the clamping device 4 is mounted on the working platform 6 by using the fastening bolt 5 and the nut 24, the clamping spring 4c and the clamping block 4a are sequentially placed in the groove of the support 4d, and the pressing block 4e is mounted on the support 4d by using the fastening screw 4b, as shown in fig. 1 and 3, thereby realizing the positioning and clamping of the flat plate part for laser inclined processing.
Sixthly, the reading plate 9 is mounted on the right support plate 7 by using a fastening bolt 8, and the angle scale 10 is mounted on the right sliding block 14 by using the fastening bolt. According to the design requirement, the screw pitch p of the screw 17 is 1mm, the center distance l between the pin shaft holes 7b at two ends of the right support plate 7 and the key shaft hole 7c is 90mm, and when the working platform 6 is in a horizontal state, the distance between the pin shaft hole 7b of the right support plate 7 and the center of the key shaft hole 7c in the vertical direction is h022 mm. From the formula (1), when the working platform 6 is in the horizontal state, the included angle theta between the right supporting plate 7 and the horizontal direction0Comprises the following steps:
from the equation (2), after the hand wheel 12 rotates n times, the included angle θ between the right support plate 7 and the horizontal direction is:
from equation (4), the inclination angle α of the work platform 6 is:
when the right slide block 14 and the left slide block 18 move to the center of the screw, the center distance between the key shaft holes at the upper ends of the left support plate 30 and the right support plate 7 is d120mm, the center distance d of the lower end pin shaft hole260mm, and the maximum value θ of the angle between the right support plate 7 and the horizontal direction obtained from the formula (5)maxComprises the following steps:
from equation (6), the maximum inclination angle α of the work platform 6maxComprises the following steps:
αmax＝θmax-θ0＝103.8°-14.1°＝89.7° (12)
therefore, from equation (7), the tilt angle adjustment range α achieved by the clamp is:
α＝[0,89.7°](13)
and (3) obtaining the inclination angle adjusting interval of the clamp according to a formula (13), marking a scale to display an angle, and accurately reading the inclination angle of the working platform through a number indicating unit.
The invention is based on strict geometric relation calculation and ingenious structural design, can realize the large-range stepless adjustment of the laser processing inclination angle of the flat plate part for laser processing through simple operation, and accurately read the inclination angle according to the geometric parameters of the clamp part.
Claims (1)
1. A part inclination angle large-range stepless adjustment clamp is characterized by comprising a positioning clamping unit, an inclination angle adjusting unit, a lead screw fixing unit and a number indicating unit;
in the positioning and clamping unit, a positioning block (1) is fixedly arranged on a working platform (6) through a positioning pin (2) and a positioning bolt (3); the two clamping devices (4) are respectively arranged at the upper left corner and the lower right corner of the working platform (6) in a diagonal manner through fixing bolts (5); two grooves are processed in a supporting seat (4d) of the clamping device (4), and two clamping springs (4c) are respectively arranged in the grooves; the clamping block (4a) is in a large shape, the head of the clamping block is in contact with a processed flat plate part, the tail of the clamping block is in contact with a clamping spring (4c), and the pressing block (4e) is fixed on the supporting seat (4d) through a fastening screw (4b) to ensure that the clamping block (4a) stretches back and forth in the groove to clamp the flat plate part;
in the inclination angle adjusting unit, a key shaft hole (30b) is processed at the upper end of a left supporting plate (30), a pin shaft hole (30d) is processed at the lower end of the left supporting plate, a left lower end groove (30e) is formed in the middle of the left end, and a right upper end groove (30f) is formed in the middle of the right end; a round rectangular through hole (30a) is formed in the middle of the upper surface of the left support plate (30), and a through hole (30c) is formed in the side surface of the left support plate; a left support plate (30) and a left sliding block (18) are fixedly connected through a pin shaft hole (30d) by a pin shaft (15);
the connecting platform (24) is composed of an upper flat plate (24a) and a middle plate (24e), and the upper flat plate (24a) is vertical to the middle plate (24 e); an upper threaded hole (24a) is processed on the upper flat plate (24a), and the connecting platform (24) is fixedly connected with the working platform (6) through a screw (25); the middle part of the middle plate (24e) is provided with a positioning surface (24c), and a lower threaded hole (24d) is processed on the middle plate (24 e); the middle plate (24e) is inserted into the round rectangular through hole (30a) of the left support plate (30) and contacts with the upper surface of the left support plate (30) through the positioning surface (24c) to limit the position; a screw (31) passes through the through hole (30c) and the lower threaded hole (24d) of the connecting platform (24) to fix the connecting platform (24) on the left support plate (30);
the upper end of the right supporting plate (7) is processed with a shaft hole (7c) with a key, the lower end is processed with a pin shaft hole (7b), the middle of the right end is provided with a right end groove (7d), the middle of the left end is provided with a left end groove (7e), and the upper surface of the right supporting plate (7) is processed with a threaded hole (7 a); the right support plate (7) and the right sliding block (14) are fixedly connected through a pin shaft (15) through a pin shaft hole (7 b); and the axial position is limited by a circlip A (16);
the upper ends of the right supporting plate (7) and the left supporting plate (30) pass through the shaft hole with the key (7c) and the shaft hole with the key (30b) by two key groove shafts (27) respectively, then pass through the central holes of the two gears (29) and the through holes at the two ends of the connecting rod (28), so that the two gears are correctly meshed, and the axial position is limited by an elastic retainer ring (26), so that no relative motion exists between the gears and the two supporting plates;
in the screw rod fixing unit, bolt holes are processed on a right sleeve seat (11) and a left sleeve seat (19) and are respectively fixed at the left end part and the right end part of a base (20) through sleeve seat bolts (13); a lead screw (17) provided with a right sliding block (14) and a left sliding block (18) is arranged in the central holes of a right sleeve seat (11) and a left sleeve seat (19); the hand wheel (12) is arranged at the right end of the screw rod (17), and the hand wheel (12) drives the screw rod (17) to rotate; the screw rod (17) rotates and simultaneously moves the right sliding block (14) and the left sliding block (18), so that the right supporting plate (7) and the left supporting plate (30) are driven to rotate, and the working platform (6) is inclined;
a threaded hole (21b), a pin hole (21c) and a through hole (21d) are processed on the handle sleeve seat (21), and two guide columns (21a) are installed; the handle (21) passes through a through hole (21d) of the handle sleeve seat (21) and is connected with the cam (32); the fastening block (23) is installed on the cam (32), a through hole in the fastening block (23) is in clearance fit with the guide column (21a), a semicircular groove is formed in the upper surface of the fastening block (23) and is in clearance fit with the lead screw (17), when the work of the workpiece inclination angle adjusting unit is finished, the handle (22) is rotated, the cam (32) pushes the fastening block (23) to move upwards to lock the lead screw (17), and the position of the inclination adjusting unit is fixed;
in the number reading unit, a number reading plate (9) is provided with a number reading hole and is arranged on a right support plate (7) through a bolt (8); the angle scale (10) is arranged on the right sliding block (14) through a bolt;
the scale is marked with angle scales, the angle marking range and the angle interval are determined by the number of rotation turns n of a hand wheel (12), the thread pitch p of a lead screw (17) and the geometric dimension of each part of an inclination adjusting unit, the center distance between a pin shaft hole (7b) at two ends of a right support plate (7) and a key shaft hole (7c) is taken as l, and when a working platform (6) is in a horizontal state, the distance between the pin shaft hole (7b) of the right support plate (7) and the center of the key shaft hole (7c) in the vertical direction is taken as h0When the working platform (6) is in a horizontal state, the included angle theta between the right supporting plate (7) and the horizontal direction0Comprises the following steps:
after the hand wheel (12) is rotated for n circles, the included angle theta between the right supporting plate (7) and the horizontal direction is as follows:
because left branch fagging (30) and right branch fagging (7) are bilateral symmetry structure, and the two turned angle size equals, and work platform (6) are fixed on connection platform (24) and left branch fagging (30), so work platform (6) and the contained angle of horizontal direction equal to the angle that left branch fagging (30) rotated, and the angle of inclination α of work platform (6) promptly is:
α＝θ-θ0(3)
the relation between the inclination angle α of the working platform (6) and each parameter is obtained by bringing the formula (1) and the formula (2) into the formula (3):
when the right sliding block (14) and the left sliding block (18) move to the center of the screw rod, the inclination angle of the working platform (6) reaches the maximum value; at the moment, the center distance between the upper ends of the left support plate (30) and the right support plate (7) with key shaft holes is d1The center distance of the lower end pin shaft hole is d2The maximum value theta of the included angle between the right supporting plate (7) and the horizontal directionmaxComprises the following steps:
the maximum inclination angle α of the working platform (6)maxComprises the following steps:
αmax＝θmax-θ0(6)
thus, the clamp achieves a tilt angle adjustment interval α of:
α＝[0,αmax](7)
and (3) obtaining the inclination angle adjusting interval of the clamp according to the formula (7), marking a scale to display the angle, and accurately reading the inclination angle of the working platform through the number indicating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495787.6A CN110280958B (en) | 2019-06-10 | 2019-06-10 | Part inclination is stepless regulation anchor clamps on a large scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495787.6A CN110280958B (en) | 2019-06-10 | 2019-06-10 | Part inclination is stepless regulation anchor clamps on a large scale |
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| Publication Number | Publication Date |
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| CN110280958A CN110280958A (en) | 2019-09-27 |
| CN110280958B true CN110280958B (en) | 2020-04-24 |
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| CN110280958A (en) | 2019-09-27 |
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