CN109622830B - Balanced type thread rolling auxiliary positioning device - Google Patents
Balanced type thread rolling auxiliary positioning device Download PDFInfo
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- CN109622830B CN109622830B CN201811474099.3A CN201811474099A CN109622830B CN 109622830 B CN109622830 B CN 109622830B CN 201811474099 A CN201811474099 A CN 201811474099A CN 109622830 B CN109622830 B CN 109622830B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/04—Making by means of profiled-rolls or die rolls
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Abstract
The invention relates to a positioning device of a thread rolling machine, in particular to a balanced positioning device for assisting thread rolling, which comprises a front positioning roller; the top of the front positioning plate is symmetrically provided with front positioning rollers; the top of the rear positioning plate is symmetrically provided with rear positioning rollers; the rear positioning plate is slidably mounted on the rear supporting plate and slides up and down along the vertical direction; the front positioning plate and the rear supporting plate are respectively fixed at two ends of the sliding plate; the elastic piece is arranged between the rear positioning plate and the sliding plate; the bottom plate is horizontally arranged, and a sliding plate is arranged on the bottom plate in a sliding manner; the workpiece is placed on the front positioning roller and the rear positioning roller, and the axis of the workpiece is parallel to the bottom plate. The device can provide self-adaptation reverse acting force, carries out flexible control, and the swing of afterbody when effective control work piece thread rolling reduces the axis of work piece and the offset of the axis of triaxial thread rolling machine, improves the appearance quality of the external screw thread that rolls out, makes tooth form size stable, reduces the damage to the thread rolling wheel, and production efficiency is high.
Description
Technical Field
The invention relates to a positioning device of a thread rolling machine, in particular to a balanced type positioning device for assisting thread rolling.
Background
The triaxial thread rolling machine is mainly used for rolling thin-walled spindle head external threads, and because a matched positioning device is not arranged, a tool for the biaxial thread rolling machine is adopted to assist in positioning a workpiece, the appearance quality and the tooth shape size of rolled threads are not stable in the using process, and a thread rolling wheel is seriously damaged, so that the production efficiency is seriously influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a balanced type positioning device for assisting thread rolling, which can provide self-adaptive reverse acting force, carry out flexible control, effectively control the swing of the tail part of a workpiece during thread rolling, reduce the offset between the axis of the workpiece and the axis of a three-axis thread rolling machine, improve the appearance quality of rolled external threads, stabilize the tooth shape size, reduce the damage to a thread rolling wheel and have high production efficiency, and the specific technical scheme is as follows:
a balanced positioning device for assisting in thread rolling comprises a front positioning roller; the top of the front positioning plate is symmetrically provided with front positioning rollers; a rear positioning roller; the top of the rear positioning plate is symmetrically provided with rear positioning rollers; the rear positioning plate is slidably mounted on the rear supporting plate and slides up and down along the vertical direction; the front positioning plate and the rear supporting plate are respectively fixed at two ends of the sliding plate; the elastic piece is arranged between the rear positioning plate and the sliding plate; the bottom plate is horizontally arranged, and a sliding plate is arranged on the bottom plate in a sliding manner; the workpiece is placed on the front positioning roller and the rear positioning roller, and the axis of the workpiece is parallel to the bottom plate.
Preferably, a height positioning hole is formed in the center of the rear positioning plate, and the height positioning hole is a waist-shaped hole; the front baffle is fixed on the rear supporting plate, a nut fixing groove is formed in the center of the front baffle, the nut fixing groove is a kidney-shaped groove, and a kidney-shaped through hole is formed in the bottom of the nut fixing groove; the side baffles are symmetrically fixed on two sides of the front baffle; the rear baffle is fixed on the side baffle, a screw positioning hole is formed in the center of the rear baffle, the screw positioning hole is a kidney-shaped hole, and the screw positioning hole corresponds to the nut fixing groove; the bottom baffle is fixed at the bottoms of the front baffle, the side baffles and the rear baffle;
the positioning nut is arranged in the nut fixing groove; the positioning screw is inserted into the screw positioning hole and connected with the positioning nut; the front baffle, the side baffles and the rear baffle form a sliding groove, the rear positioning plate is inserted into the sliding groove in a sliding manner, and the positioning screw penetrates through a height positioning hole of the rear positioning plate; the elastic piece is positioned between the bottom baffle and the rear positioning plate.
Preferably, the side baffle is provided with at least two roller holes A; the roller shaft A is fixed in the roller hole A; and the side rollers are rotatably arranged on the roller shaft A and respectively pressed on two sides of the rear positioning plate.
Preferably, one end of the rear positioning plate is provided with at least four roller holes B, and the roller holes B are through holes and are symmetrically arranged at one end of the rear positioning plate; the rear positioning plate is characterized by also comprising roller shafts B, wherein the roller shafts B are fixed in the roller holes B, two roller shafts B are arranged in each roller hole B, and the two roller shafts B are arranged in parallel and are respectively positioned at two ends of the rear positioning plate; and the lifting rollers are respectively and rotatably arranged on the roller shaft B and respectively pressed on the front baffle and the rear baffle.
Preferably, the rear supporting plate is provided with a height adjusting hole, the height adjusting hole is a waist-shaped hole, and the height adjusting hole is connected with the front baffle through a bolt; the front support plate is provided with a front fixing hole and fixed on the sliding plate; the front positioning plate is provided with a front adjusting hole which is a waist-shaped hole, and the front adjusting hole is fixed on the front fixing hole of the front supporting plate through a bolt.
Preferably, the elastic member is a cylindrical coil spring or a nitrogen spring.
Preferably, the device also comprises an end face positioning roller, and the end face positioning roller is tightly pressed on the rear end face of the workpiece; and the rear positioning seat is provided with an end face positioning roller and is fixed on the rear supporting plate.
Preferably, the included angle between the two front positioning rollers and the axis of the workpiece is 90 degrees; the included angle between the two rear positioning rollers and the axis of the workpiece is 90 degrees.
Preferably, the device also comprises a linear guide rail, wherein the linear guide rail is fixed on the bottom plate; and the sliding block is fixed at the bottom of the sliding plate and is arranged on the linear guide rail in a sliding manner.
Preferably, the sliding plate further comprises a limiting device, the limiting device comprises two limiting seats, the two limiting seats are fixed on the bottom plate, and the limiting seats are arranged along the sliding direction of the sliding plate; and the limiting block is fixed at the bottom of the sliding plate and is positioned between the two limiting seats.
Compared with the prior art, the invention has the following beneficial effects:
the balanced type positioning device for assisting thread rolling can provide self-adaptive reverse acting force, is flexibly controlled, effectively controls the swing of the tail part of a workpiece during thread rolling, reduces the offset between the axis of the workpiece and the axis of a three-axis thread rolling machine, improves the appearance quality of rolled external threads, stabilizes the tooth form size, reduces the damage to a thread rolling wheel, and has high production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a balanced thread rolling auxiliary positioning device with a workpiece;
FIG. 2 is a schematic view of an axial measurement structure of a balanced positioning device for assisting in thread rolling;
FIG. 3 is a front view of a balanced thread rolling auxiliary positioning device;
FIG. 4 is an exploded view of the back locating plate, front baffle, back baffle, side baffles, bottom baffle and elastic member;
FIG. 5 is a structural schematic of a front baffle;
fig. 6 is a schematic sectional view of the rear positioning plate along the roller hole B.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 3, a balanced positioning device for assisting thread rolling comprises a front positioning roller 20; the top of the front positioning plate 21 is symmetrically provided with front positioning rollers 20; a rear positioning roller 30; the top of the rear positioning plate 31 is symmetrically provided with rear positioning rollers 30; the rear support plate 32 is provided with the rear positioning plate 31 which is slidably arranged on the rear support plate 32, and the rear positioning plate 31 vertically slides; the sliding plate 15, the said front positioning plate 21 and back supporting plate 32 are fixed on both ends of the sliding plate 15 separately; an elastic member 35, the elastic member 35 being installed between the rear positioning plate 31 and the sliding plate 15; the bottom plate 10 is horizontally arranged, and a sliding plate 15 is slidably arranged on the bottom plate 10; the workpiece 91 is placed on the front and rear positioning rollers 20 and 30 with the axis of the workpiece 91 parallel to the base plate 10.
Specifically, the front positioning roller 20 is mounted on a front bearing, the front bearing is mounted on a front roller shaft 23, and the front roller shaft 23 is symmetrically fixed on the top of the front positioning plate 21. The front roller shaft 23 is a stepped shaft, a clamp spring is arranged at the end part of the front roller shaft 23, the clamp spring and a shaft shoulder of the front roller shaft 23 prevent the front bearing from axially moving, and the position of the front positioning roller 20 is limited. The front positioning plate 21 is of a symmetrical structure, the top of the front positioning plate 21 is provided with a clearance groove A211, the clearance groove A211 is located at the center of the front positioning plate 21, and the clearance groove A211 prevents the front positioning plate 21 from interfering with the workpiece 91. The front positioning roller 20 lifts up the cylindrical body of the front end of the workpiece 91.
The rear positioning roller 30 is mounted on a rear bearing, the rear bearing is mounted on a rear roller shaft 33, and the rear roller shaft 33 is symmetrically fixed on the top of the rear positioning plate 31. The rear roller shaft 33 is a stepped shaft, a clamp spring is arranged at the end part of the rear roller shaft 33, and the clamp spring and the shaft shoulder of the rear roller shaft 33 prevent the rear bearing from axially moving so as to limit the position of the rear positioning roller 30. The rear positioning plate 31 has a symmetrical structure, the top of the rear positioning plate 31 is provided with a avoiding groove B313, the avoiding groove B313 is located at the center of the rear positioning plate 31, and the avoiding groove B313 prevents the rear positioning plate 31 from interfering with the workpiece 91. The rear positioning roller 30 holds up the cylindrical body of the rear end of the workpiece 91.
The front positioning roller 20 and the rear positioning roller 30 are made of high-alloy cold-working tool steel, the quenching and tempering hardness of the material is HRC60-65, the surface roughness is Ra0.25, the assembly gaps between the front positioning roller 20 and the rear positioning roller 30 and between the front bearing and the rear bearing are 0.02-0.05 mm, and the coaxiality and the roundness are not more than 0.02 mm.
Further, as shown in fig. 4, 5 and 6, a height positioning hole 311 is formed in the center of the rear positioning plate 31, and the height positioning hole 311 is a kidney-shaped hole; the front baffle plate 41 is fixed on the rear support plate 32, a nut fixing groove 412 is formed in the center of the front baffle plate 41, the nut fixing groove 412 is a kidney-shaped groove, and a kidney-shaped through hole is formed in the bottom of the nut fixing groove 412; the side baffles 43, the side baffles 43 are symmetrically fixed at two sides of the front baffle 41; the rear baffle plate 42 is fixed on the side baffle plate 43, the center of the rear baffle plate 42 is provided with a screw positioning hole 421, the screw positioning hole 421 is a waist-shaped hole, and the screw positioning hole 421 corresponds to the nut fixing groove 412; a bottom flap 45, the bottom flap 45 being fixed to the bottom of the front flap 41, the side flaps 43, and the rear flap 42; a set nut installed in the nut fixing groove 412; the positioning screw is inserted into the screw positioning hole 421 and connected with the positioning nut; the front baffle plate 41, the side baffle plates 43 and the rear baffle plate 42 form a sliding groove, the rear positioning plate 31 is inserted in the sliding groove in a sliding manner, and the positioning screw penetrates through the height positioning hole 311 of the rear positioning plate 31; the elastic member 35 is located between the bottom baffle 45 and the rear positioning plate 31.
And a height adjusting hole 321 is formed in the rear supporting plate 32, the height adjusting hole 321 is a waist-shaped hole, and the height adjusting hole 321 is connected with the front baffle 41 through a bolt.
The device also comprises a front support plate 22, wherein a front fixing hole is formed in the front support plate 22, and the front support plate 22 is fixed on the sliding plate 15;
the front positioning plate 21 is provided with a front adjusting hole 211, the front adjusting hole 211 is a waist-shaped hole, and the front adjusting hole 211 is fixed on the front fixing hole of the front supporting plate 22 through a bolt.
The elastic member 35 is a cylindrical coil spring or a nitrogen spring.
Specifically, the front baffle 41 is a rectangular plate and has a symmetrical structure, four threaded holes are formed in two ends of the front baffle 41, and bolts are mounted on the threaded holes and fix the front baffle 41 to the rear support plate 32. Preceding baffle 41 keeps away from one side symmetry of back backup pad 32 and is equipped with two constant head tanks 411, and the both ends of baffle 41 before constant head tank 411 is located, the vertical setting of constant head tank 411. The side baffles 43 are fixed in the positioning slots 411, and the positioning slots 411 enable the side baffles 43 to keep good perpendicularity and parallelism when being installed, and can control the distance between the two side baffles 43, so that the rear positioning plate 31 can smoothly slide up and down, and is fixed in left and right positions without position deviation. The front baffle plate 41, the side baffle plates 43 and the rear baffle plate 42 are fixed together by a bolt assembly. The gaps between the rear positioning plate 31 and the front baffle plate 41 and between the rear baffle plate 42 and the side baffle plate 43 are 0.05-0.10 mm, the rear positioning plate 31 can conveniently slide up and down, the rear positioning plate 31 can shake due to the fact that the gaps are too large, and therefore the position of the workpiece 91 is deviated, and the axis of the workpiece 91 and the axis of the three-axis thread rolling machine are not on the same axis. The front baffle 41, the rear baffle 42 and the side baffles 43 are all made of SKD61 materials, the quenching and tempering hardness of the materials is HRC 50-55, and the surface roughness is Ra2.5. The surface hardness is higher antifriction, can improve life, and roughness low frictional force is little, and back locating plate 31 slides smoothly from top to bottom.
The positioning nut can adopt a standard hexagonal nut or a quadrangular nut, and can slide up and down along the nut fixing groove 412, so that the position can be adjusted. The height of the rear positioning plate 31 is limited by the cooperation of the positioning nut and the positioning screw, that is, the height of the rear positioning plate 31 which rises is limited by the tightening of the positioning screw on the positioning nut. Since the set nut is positioned between the rear support plate 32 and the front barrier 41, the set nut is restricted from rotating by the nut fixing groove 412, thereby facilitating the tightening of the set screw. The height and the elastic force of the rear positioning plate 31 are adjusted by adjusting the height of the positioning screws. The rear positioning plate 31 is held at the uppermost position by the elastic member 35. Because the rear positioning plate 31 needs a certain upward force, if no positioning screw is provided, the height of the rear positioning plate 31 will be increased, so that the axis of the workpiece 91 and the axis of the three-axis thread rolling machine are not on the same axis, and the elasticity cannot be controlled, the positioning screw is mainly used for adjusting the elasticity of the elastic piece 35, so that the rear positioning roller 30 can provide a proper force to restrain the swinging of the workpiece 91 when the rear end of the workpiece 91 swings, and flexible control is performed, thereby realizing the balance when the workpiece 91 is processed.
The front adjusting holes 211 are symmetrically arranged on two sides of the front positioning plate 21, and two front adjusting holes are arranged on each side and are arranged along the vertical direction. Four front fixing holes are formed in the front supporting plate 22, the front fixing holes correspond to the front adjusting holes 211 respectively, and the front adjusting holes 211 are used for adjusting the positions of the front positioning rollers 20, so that the heights of the front positioning rollers 20 can be adjusted conveniently, and the axis of the workpiece 91 is coincided with the axis of the three-axis thread rolling machine. The height adjusting holes 321 on the rear support plate 32 and the front adjusting holes 211 on the front positioning plate 21 are used for adjusting the heights of the rear positioning rollers 30 and the front positioning rollers 20, so that the heights are matched with the shapes of stepped shafts of the workpiece 91, and the axis of the workpiece 91 is on the same axis with the axis of the three-shaft thread rolling machine.
If the elastic member 35 is a cylindrical coil spring, a spring hole is formed at the bottom of the rear positioning plate 31 to fix the cylindrical coil spring in the spring hole. If the elastic member 35 is a nitrogen spring, the nitrogen spring is fixed on the bottom baffle 45, and a piston rod of the nitrogen spring abuts against the bottom of the rear positioning plate 31. When the workpiece 91 rolls threads, the tail of the workpiece 91 is easy to swing, the elastic piece 35 provides elastic force, so that the rear positioning roller 30 provides certain reverse constraint force when the tail of the workpiece 91 swings, the swing amplitude of the workpiece 91 is reduced, the eccentricity is reduced, flexible control is performed, the axis of the workpiece 91 and the axis of the three-axis thread rolling machine are on the same axis as far as possible, the appearance quality of rolled external threads is improved, the tooth form size is stable, and the damage to the thread rolling wheel 92 is reduced. If the rear positioning roller 30 is fixedly arranged, the tail of the workpiece 91 cannot swing in the machining process, the workpiece 91 and the thread rolling wheel 92 are mutually extruded, the external thread is distorted, the thread rolling wheel 92 is seriously damaged, and even the deformation of a thin-wall part is caused. In the embodiment, the swinging of the tail part of the workpiece 91 is reduced by providing the reverse force capable of automatically changing at the tail part of the workpiece 91, and when the swinging amplitude of the workpiece 91 is larger, the reverse elastic force is larger, and the swinging amplitude of the workpiece 91 is smaller, the reverse elastic force is smaller, so that the flexible control is realized, the axis of the workpiece 91 and the axis of the three-axis thread rolling machine are on the same axis as much as possible, the processing quality is improved, the thread rolling wheel 92 and the workpiece 91 are prevented from being damaged, the problem is fundamentally solved, and the processing efficiency is improved.
Further, the included angle between the two front positioning rollers 20 and the axis of the workpiece 91 is 90 degrees; the two rear positioning rollers 30 make an angle of 90 ° with the axis of the workpiece 91. The included angle between the axis of the front positioning roller 20 and the axis of the rear positioning roller 30 and the axis of the workpiece 91 is 90 degrees, when the included angle is too large, the tail of the workpiece 91 is clamped in the rear positioning roller 30 easily and cannot swing, and when the included angle is too small, the contact between the rear positioning roller 30 and the workpiece 91 is too little, so that the reverse acting force cannot be effectively provided.
Further, the device also comprises a linear guide rail 11, wherein the linear guide rail 11 is fixed on the bottom plate 10; and the sliding block 12, the sliding block 12 is fixed on the bottom of the sliding plate 15, and the sliding block 12 is slidably mounted on the linear guide rail 11.
The device further comprises a limiting device, wherein the limiting device comprises two limiting seats 13, the two limiting seats 13 are fixed on the bottom plate 10, and the limiting seats 13 are arranged along the sliding direction of the sliding plate 15; and the limiting block 14 is fixed at the bottom of the sliding plate 15 and is positioned between the two limiting seats 13. The stopper base 13 and the stopper 14 are used to limit the moving distance of the sliding plate 15, prevent collision, and prevent the sliding block 12 from falling off the linear guide 11. The linear guide 11 and the slide 12 facilitate the feeding of the workpiece 91 into the thread roller 92 of the thread rolling machine.
Example two
On the basis of the above embodiment, further, the side baffle 43 is provided with at least two roller holes a431, and the number of the roller holes a431 is not less than two; the roller shaft A is fixed in the roller hole A431; and side rollers 44, wherein the side rollers 44 are respectively rotatably arranged on the roller shafts A, and the side rollers 44 are respectively pressed on two sides of the rear positioning plate 31.
One end of the rear positioning plate 31 is provided with roller holes B312, the roller holes B312 are through holes, and the number of the roller holes B312 is not less than four and is symmetrically arranged at one end of the rear positioning plate 31; the rear positioning plate further comprises roller shafts B, the roller shafts B are fixed in the roller holes B312, two roller shafts B are arranged in each roller hole B312, and the two roller shafts B are arranged in parallel and are respectively positioned at two ends of the rear positioning plate 31; and the lifting rollers 34, the lifting rollers 34 are respectively and rotatably arranged on the roller shafts B, and the lifting rollers 34 are respectively pressed on the front baffle plate 41 and the rear baffle plate 42.
Specifically, the roller holes a431 are formed in the vertical direction, and the side rollers 44 are respectively pressed on the top and the bottom of the side surface of the rear positioning plate 31, so that the rear positioning plate 31 can slide up and down in the vertical direction.
Since the rear positioning plate 31 is in contact with the front baffle plate 41, the rear baffle plate 42 and the side baffle plates 43, the contact area is large, the viscosity is large, and the rear positioning plate 31 is prone to being stuck and failed. Moreover, the rear positioning plate 31, the front baffle plate 41, the rear baffle plate 42 and the side baffle plates 43 have high processing requirements, so that the processing cost is high and the later maintenance is difficult. The side rollers 44 and the lifting rollers 34 can further reduce the friction force between the rear positioning plate 31 and the front baffle 41, between the rear baffle 42 and between the rear baffle 43, so that the rear positioning plate 31 can slide up and down more smoothly, the smooth vertical-direction up-and-down sliding of the rear positioning plate 31 can be effectively ensured, the phenomenon that the rear positioning plate 31 is clamped is prevented, the processing requirement can be reduced, and the later maintenance is convenient.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the workpiece positioning device further comprises an end face positioning roller 50, wherein the end face positioning roller 50 is pressed on the rear end face of the workpiece 91; and the rear positioning seat 51, the end face positioning roller 50 is installed on the rear positioning seat 51, and the rear positioning seat 51 is fixed on the rear supporting plate 32.
Specifically, a waist-shaped hole is formed in the rear positioning seat 51, and the waist-shaped hole is used for adjusting the position of the end face positioning roller 50. The end face positioning roller 50 is horizontally arranged, the end face positioning roller 50 rotates along with the end face of the workpiece 91, and the end face positioning roller 50 limits the axial position of the workpiece 91, so that the machining and the positioning of the workpiece 91 are facilitated.
During working, the diameter of the workpiece 91 is measured, the heights of the front positioning roller 20 and the rear positioning roller 30 are adjusted according to the height of the axis of the three-axis thread rolling machine, so that the axis of the workpiece 91 is overlapped with the axis of the three-axis thread rolling machine, and when the workpiece 91 is pushed into the center of a thread wheel, the position of the axis is ensured to be unchanged and is consistent with the requirement on the size of thread rolling threads. The workpiece 91 is placed on the front positioning roller 20 and the rear positioning roller 30, and the rear end face of the workpiece 91 is pressed against the end face roller. When the thread rolling wheel 92 rolls threads, the front positioning roller 20 keeps the front end of the workpiece 91 at the center of the thread rolling wheel 92, the rear end of the workpiece 91 keeps proper and restricted free rotary motion along with the influence of extrusion deformation of the front end, the swing amplitude does not exceed the related technological parameter requirements of the thread rolling machine, and thread rolling is completed.
The invention has the following advantages:
1. the rigidity of the tool is enhanced in material, structure and heat treatment modes, so that the tool does not shake, deform and resist fatigue during working;
2. the rear positioning roller 30 can provide self-adaptive reverse acting force, realize flexible control and effectively control the swing of the tail part of the workpiece 91 during thread rolling;
3. the workpiece 91 is convenient to mount and dismount, rapid in positioning, accurate in push-pull positioning and high in machining efficiency;
4. the service life of the thread rolling wheel 92 is prolonged;
5. the workpiece 91 has a thread form with high degree of finish, which is superior to Ra0.2; the tooth shape has accurate size, the precision tolerance of the processing length is less than or equal to 0.05mm, and the angle tolerance is less than or equal to 2 degrees; has no distortion.
Claims (9)
1. A balanced positioning device for assisting in thread rolling is characterized by comprising
A front positioning roller (20);
the top of the front positioning plate (21) is symmetrically provided with front positioning rollers (20);
a rear positioning roller (30);
the top of the rear positioning plate (31) is symmetrically provided with rear positioning rollers (30);
the rear support plate (32), the rear positioning plate (31) is slidably mounted on the rear support plate (32), and the rear positioning plate (31) vertically slides along the vertical direction;
the front positioning plate (21) and the rear supporting plate (32) are respectively fixed at two ends of the sliding plate (15);
an elastic member (35), the elastic member (35) being installed between the rear positioning plate (31) and the sliding plate (15); and
the bottom plate (10), the said bottom plate (10) is set up horizontally, the sliding plate (15) is slipped on the bottom plate (10);
the workpiece (91) is placed on the front positioning roller (20) and the rear positioning roller (30), and the axis of the workpiece (91) is parallel to the bottom plate (10);
the end face positioning device further comprises an end face positioning roller (50), wherein the end face positioning roller (50) is tightly pressed on the rear end face of the workpiece (91); and the rear positioning seat (51), the rear positioning seat (51) is provided with an end face positioning roller (50), and the rear positioning seat (51) is fixed on the rear supporting plate (32).
2. The balanced type positioning device for assisting thread rolling according to claim 1,
a height positioning hole (311) is formed in the center of the rear positioning plate (31), and the height positioning hole (311) is a waist-shaped hole; also comprises
The front baffle (41) is fixed on the rear support plate (32), a nut fixing groove (412) is formed in the center of the front baffle (41), the nut fixing groove (412) is a kidney-shaped groove, and a kidney-shaped through hole is formed in the bottom of the nut fixing groove (412);
the side baffles (43), the side baffles (43) are symmetrically fixed on two sides of the front baffle (41);
the rear baffle (42) is fixed on the side baffle (43), the center of the rear baffle (42) is provided with a screw positioning hole (421), the screw positioning hole (421) is a waist-shaped hole, and the screw positioning hole (421) corresponds to the nut fixing groove (412);
the bottom baffle (45), the said bottom baffle (45) is fixed to the bottom of the front baffle (41), side baffle (43) and back baffle (42);
a set nut installed in a nut fixing groove (412); and
the positioning screw is inserted into the screw positioning hole (421) and is connected with the positioning nut;
the front baffle plate (41), the side baffle plates (43) and the rear baffle plate (42) form a sliding groove, the rear positioning plate (31) is inserted into the sliding groove in a sliding mode, and the positioning screw penetrates through a height positioning hole (311) of the rear positioning plate (31);
the elastic piece (35) is positioned between the bottom baffle (45) and the rear positioning plate (31).
3. The balanced type positioning device for assisting thread rolling according to claim 2,
the side baffle (43) is provided with at least two roller holes A (431), and the number of the roller holes A (431) is not less than two;
the roller shaft A is fixed in a roller hole A (431); and
and the side rollers (44) are rotatably arranged on the roller shaft A, and the side rollers (44) are respectively pressed on two sides of the rear positioning plate (31).
4. The balanced type positioning device for assisting thread rolling according to claim 2 or 3,
one end of the rear positioning plate (31) is provided with roller holes B (312), the roller holes B (312) are through holes, the number of the roller holes B (312) is not less than four, and the roller holes B (312) are symmetrically arranged at one end of the rear positioning plate (31);
the rear positioning plate further comprises roller shafts B, wherein the roller shafts B are fixed in the roller holes B (312), two roller shafts B are arranged in each roller hole B (312), and the two roller shafts B are arranged in parallel and are respectively positioned at two ends of the rear positioning plate (31); and
and the lifting rollers (34) are respectively and rotatably arranged on the roller shafts B, and the lifting rollers (34) are respectively pressed on the front baffle (41) and the rear baffle (42).
5. The balanced type positioning device for assisting thread rolling according to claim 2,
the rear supporting plate (32) is provided with a height adjusting hole (321), the height adjusting hole (321) is a waist-shaped hole, and the height adjusting hole (321) is connected with the front baffle (41) through a bolt;
the front support plate (22) is provided with a front fixing hole, and the front support plate (22) is fixed on the sliding plate (15);
the front positioning plate (21) is provided with a front adjusting hole (211), the front adjusting hole (211) is a waist-shaped hole, and the front adjusting hole (211) is fixed on a front fixing hole of the front supporting plate (22) through a bolt.
6. The balanced type positioning device for assisting thread rolling according to claim 1, wherein the elastic member (35) is a cylindrical coil spring or a nitrogen spring.
7. The balanced type positioning device for assisting in thread rolling according to claim 1, wherein an included angle between the two front positioning rollers (20) and an axis of the workpiece (91) is 90 degrees; the included angle between the two rear positioning rollers (30) and the axis of the workpiece (91) is 90 degrees.
8. The balanced type positioning device for assisting in thread rolling according to claim 1, further comprising a linear guide rail (11), wherein the linear guide rail (11) is fixed on the bottom plate (10); and
the sliding block (12) is fixed at the bottom of the sliding plate (15), and the sliding block (12) is installed on the linear guide rail (11) in a sliding mode.
9. The balanced thread rolling auxiliary positioning device according to claim 8, further comprising a limiting device, wherein the limiting device comprises
The number of the limiting seats (13) is two, the limiting seats (13) are fixed on the bottom plate (10), and the limiting seats (13) are arranged along the sliding direction of the sliding plate (15); and
the limiting block (14), the limiting block (14) is fixed at the bottom of the sliding plate (15) and is positioned between the two limiting seats (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474099.3A CN109622830B (en) | 2018-12-04 | 2018-12-04 | Balanced type thread rolling auxiliary positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474099.3A CN109622830B (en) | 2018-12-04 | 2018-12-04 | Balanced type thread rolling auxiliary positioning device |
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| Publication Number | Publication Date |
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| CN109622830A CN109622830A (en) | 2019-04-16 |
| CN109622830B true CN109622830B (en) | 2020-07-31 |
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| CN201811474099.3A Active CN109622830B (en) | 2018-12-04 | 2018-12-04 | Balanced type thread rolling auxiliary positioning device |
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| CN113102665B (en) * | 2021-05-18 | 2024-06-18 | 河北易达核联机械制造股份有限公司 | Automatic bar rolling straight thread machine tool |
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| DE3523481C1 (en) * | 1985-07-01 | 1986-11-27 | SKF Textilmaschinen-Komponenten GmbH, 7000 Stuttgart | Thread monitor for spinning machine drafting systems equipped with double top rollers |
| CN204396758U (en) * | 2014-11-26 | 2015-06-17 | 新昌县澄潭镇苗平机械厂 | A kind of supporting plate structure of screw-rolling machine |
| CN204314142U (en) * | 2014-12-17 | 2015-05-06 | 天津城建大学 | Multistation clamping device is used in the test of gas pipeline laser-impact |
| CN206925258U (en) * | 2017-04-19 | 2018-01-26 | 天津北特汽车零部件有限公司 | A kind of piston rod rolled thread automatic positioning equipment |
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