Screw feeding device for screw machining

Abstract

The invention relates to the field of screw machining, in particular to a screw feeding device for screw machining. The technical problems that when a screw is fed through an existing feeding device, a workpiece is inconvenient to position before machining, the rear end of the workpiece is prone to shaking, the end, where thread rolling is completed, of the workpiece is difficult to limit according to the diameter of the workpiece after thread rolling, and then the thread rolling precision is low, and the thread rolling effect is poor are solved. The screw feeding device for screw machining comprises a bottom frame, the top of the bottom frame is connected with a sliding plate in a sliding mode, the top of the bottom frame is fixedly connected with a protective shell, and two electric thread rolling machines are arranged in the protective shell. The gear disc drives the third gear to rotate, the third gear drives the threaded rod to rotate, the threaded sleeve drives the first balls to move in the direction close to one another, and the four first balls make contact with a workpiece and position the workpiece, so that the workpiece can be conveniently positioned before machining, the thread rolling precision is improved, and the thread rolling effect is enhanced.

Description

Technical Field

[0001] The invention relates to the field of screw processing, and in particular to a screw feeding device used for screw processing. Background Art

[0002] Screw processing refers to the process of machining threads on a round shaft. Common screw processing methods include turning, tapping, thread rolling, and thread rolling. The thread rolling method generally uses two rolling wheels rotating in the same direction to extrude the round shaft to form threads. The threads machined by the thread rolling method have the advantages of higher strength and hardness, as well as stronger wear resistance and toughness.

[0003] When a thread rolling machine processes threads, a feeding device is required to feed the material. The existing screw feeding device generally pushes the workpiece directly into the thread rolling machine through an electric or pneumatic push rod, which is not convenient for positioning the workpiece before processing. As the thread rolling proceeds, the front end of the workpiece is clamped and the rear end is not restrained, which is prone to shaking, and the diameter of one end of the workpiece after thread rolling increases. The traditional feeding device generally has a fixed diameter for the stabilizing device of the discharge port, which is not convenient for limiting the end of the workpiece after thread rolling according to the diameter of the workpiece after thread rolling, resulting in low thread rolling accuracy and poor thread rolling effect. Summary of the invention

[0004] In order to overcome the shortcomings of the existing feeding device, that is, when feeding the screw, it is inconvenient to position the workpiece before processing, the rear end of the workpiece is prone to shaking, and it is difficult to limit the end of the workpiece after thread rolling according to the diameter of the workpiece after thread rolling, which leads to low thread rolling accuracy and poor thread rolling effect. The present invention provides a screw feeding device for screw processing, which can conveniently position the workpiece before processing, reduce the probability of shaking at the rear end of the workpiece, and limit the end of the workpiece after thread rolling according to the diameter of the workpiece after thread rolling, thereby improving the thread rolling accuracy and enhancing the thread rolling effect.

[0005] The technical solution of the present invention is as follows: a screw feeding device for screw processing, comprising a base frame, a sliding plate is slidably connected to the top of the base frame, a protective shell is fixedly connected to the top of the base frame, the protective shell is hollow, and both sides of the protective shell are open, two electric thread rolling machines are arranged in the protective shell, and the two electric thread rolling machines are symmetrically arranged, a cooling spray rack is provided on the upper part of the protective shell, and the liquid outlet of the liquid outlet pipe of the cooling spray rack is located above the side where the two electric thread rolling machines are close to each other, a displacement mechanism is provided on the base frame, and the displacement mechanism is used to drive the sliding plate to move and reset, a positioning mechanism is provided on the base frame, and an anti-shake mechanism is provided on the positioning mechanism, a workpiece is placed on the anti-shake mechanism, and the positioning mechanism is used to position the workpiece before processing, and the anti-shake mechanism is used to reduce the probability of shaking at the rear end of the workpiece during processing.

[0006] In a preferred embodiment of the present invention, the displacement mechanism includes a servo self-locking motor 1, two of the servo self-locking motors 1 are fixedly connected to the bottom of the base frame, the two servo self-locking motors 1 are symmetrically arranged, two rotating shafts are rotatably connected to the base frame, the upper ends of the two rotating shafts are fixedly connected to overrunning clutches, the outer rings of the two overrunning clutches are fixedly connected to gears 1, and two racks are fixedly connected to the sliding plate, the two racks are symmetrically arranged, and one side of the two racks is respectively meshed with the two gears 1.

[0007] In a preferred embodiment of the present invention, the positioning mechanism includes a fixed frame, the top of the base frame is fixedly connected to the fixed frame, the upper part of the fixed frame is fixedly connected to a servo self-locking motor 2, the output shaft of the servo self-locking motor 2 is fixedly connected to a gear 2, the upper part of the fixed frame is rotatably connected to a toothed disc, the toothed disc is fixedly connected to a gear ring, the gear ring is meshed with the gear 2, and a centering component is provided on the fixed frame.

[0008] In a preferred embodiment of the present invention, the centering component includes a mounting frame, four mounting frames are fixedly connected to the upper part of the fixed frame, the four mounting frames are evenly spaced, the four mounting frames are rotatably connected to threaded rods, one end of the four threaded rods are fixedly connected to gear three, the four gear threes are meshed with the toothed disk, the upper part of the fixed frame is slidably connected to four threaded sleeves, the four threaded sleeves are evenly spaced, the four threaded sleeves are respectively connected to the four threaded rods by threads, the ends of the four threaded sleeves close to each other are embedded with ball one, and a telescopic component is provided on the sliding plate.

[0009] In a preferred embodiment of the present invention, the telescopic assembly includes a connecting frame, the top of the sliding plate is fixedly connected to the connecting frame, an electric push rod is fixedly connected to the connecting frame, one end of the electric push rod telescopic rod is located between the two electric thread rolling machines, and the end of the electric push rod telescopic rod located between the two electric thread rolling machines is embedded with ball 2.

[0010] In a preferred embodiment of the present invention, the anti-shake mechanism includes a guide frame 1, two guide frames 1 are provided on the fixed frame, the two guide frames 1 are symmetrically arranged, the two guide frames 1 are slidably connected to a transmission frame, the two transmission frames are slidably connected to the protective shell, the two transmission frames are respectively fixedly connected to two different threaded sleeves, and a caliper is fixedly connected to one side of the two transmission frames.

[0011] In a preferred embodiment of the present invention, it also includes a limiting mechanism, the limiting mechanism is provided on the protective shell, the limiting mechanism is used to limit one end of the workpiece after the thread rolling is completed according to the overall diameter of the workpiece after thread rolling, the limiting mechanism includes a guide frame 2, the guide frame 2 is fixedly connected to one side of the protective shell, two sliding frames are slidably connected to the guide frame 2, the two sliding frames are symmetrically arranged, each of the sliding frames has two card slots, and a reset spring is provided between the two sliding frames and the guide frame 2, each of the sliding frames is embedded with two groups of wear-resistant steel balls, the number of wear-resistant steel balls in each group is two, the two groups of wear-resistant steel balls on the same sliding frame are symmetrically arranged, and the two wear-resistant steel balls in the same group are symmetrically arranged, and a clamping assembly is provided on the guide frame 2.

[0012] In a preferred embodiment of the present invention, the clamping assembly includes a clamping frame, two clamping frames are slidingly connected to the guide frame, the two clamping frames are symmetrically arranged, the two clamping frames are fixedly connected to extrusion rollers, two contact shafts are fixedly connected to each clamping frame, the two contact shafts on the same clamping frame are symmetrically arranged, two double-groove frames are fixedly connected to the sliding plate, the two double-groove frames are symmetrically arranged, two guide grooves are opened on the double-groove frames, and one end of the two contact shafts on the same side are respectively located in the two guide grooves of the double-groove frames on the same side.

[0013] In a preferred embodiment of the present invention, the squeezing roller is made of highly wear-resistant rubber material.

[0014] In a preferred embodiment of the present invention, it also includes ball three, and four groups of ball three are embedded and connected to the two calipers, the number of ball three in each group is three, and the three ball three in the same group are evenly spaced.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The output shaft of the servo self-locking motor 2 rotates to drive the gear 2 to rotate, the gear 2 drives the gear ring to rotate, the gear ring drives the gear plate to rotate, the gear plate drives the four gears 3 to rotate, the four gears 3 drive the four threaded rods to rotate, and under the action of the threads on the threaded rods, the four threaded sleeves drive the four ball bearings to move in a direction close to each other, the four ball bearings contact and position the workpiece, which can facilitate the positioning of the workpiece before processing, improve the accuracy of thread rolling, and enhance the thread rolling effect.

[0016] 2. By moving two threaded sleeves toward each other, the two transmission frames move toward each other, and the two transmission frames move toward each other, which drives the two calipers to move toward each other. The two calipers move toward each other to clamp the rear end of the workpiece, which can reduce the probability of jitter at the rear end of the workpiece during processing, further improve the accuracy of thread rolling, and further enhance the thread rolling effect.

[0017] 3. Through the end of the workpiece where the thread rolling is completed, two groups of wear-resistant steel balls are squeezed in the directions away from each other. The two groups of wear-resistant steel balls drive the two sliding frames to move in the directions away from each other, and drive the other two groups of wear-resistant steel balls to move synchronously. When the sliding plate moves horizontally, it drives the two double-groove frames to move horizontally. After the workpiece enters between the four groups of wear-resistant steel balls, the two double-groove frames respectively squeeze the two contact axes on the same side in the directions close to each other, so that the two clamping frames drive the two extrusion rollers to clamp the two sliding frames, which can facilitate the limitation of the end of the workpiece where the thread rolling is completed according to the diameter of the workpiece after thread rolling, further improve the accuracy of thread rolling, and further enhance the thread rolling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the displacement mechanism and telescopic assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the displacement mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the telescopic assembly of the present invention.

[0022] Figure 5 It is a schematic cross-sectional three-dimensional structure diagram of the positioning mechanism and the anti-shake mechanism of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the positioning mechanism and the anti-shake mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning mechanism, the anti-shake mechanism and the ball bearing three of the present invention.

[0025] Figure 8 It is a schematic diagram of the split three-dimensional structure of the positioning mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the caliper and the ball bearing three of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the split three-dimensional structure of the limiting mechanism of the present invention.

[0029] Among them, the above-mentioned drawings include the following figure marks: 1, base frame, 2, sliding plate, 3, protective shell, 4, electric thread rolling machine, 5, cooling spray frame, 51, servo self-locking motor one, 52, rotating shaft, 53, overrunning clutch, 54, gear one, 55, rack, 61, fixed frame, 62, servo self-locking motor two, 63, gear two, 64, gear plate, 65, gear ring, 66, mounting frame, 67, threaded rod, 68, gear three, 69, threaded sleeve, 610, ball one, 81, connecting frame, 82, electric push rod, 83, ball two, 71, guide frame one, 72, transmission frame, 73, caliper, 74, workpiece, 91, guide frame two, 92, sliding frame, 93, reset spring, 94, wear-resistant steel ball, 95, clamping frame, 96, extrusion roller, 97, contact shaft, 98, double groove frame, 10, ball three. DETAILED DESCRIPTION

[0030] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0031] Embodiment 1: A screw feeding device for screw processing, such as Figure 1-Figure 9 As shown, it includes a base frame 1, a sliding plate 2 is slidably connected to the top of the base frame 1, a protective shell 3 is fixed to the top of the base frame 1, the protective shell 3 is hollow, and both sides of the protective shell 3 are open. Two electric thread rolling machines 4 are arranged in the protective shell 3, and the protective shell 3 is used to protect the electric thread rolling machines 4. The two electric thread rolling machines 4 are symmetrically arranged. A cooling spray rack 5 is provided on the upper part of the protective shell 3, and the outlet of the liquid outlet pipe of the cooling spray rack 5 is located above the side where the two electric thread rolling machines 4 are close to each other. The cooling spray rack 5 is used to spray coolant to cool the electric thread rolling machines 4 during thread rolling. A displacement mechanism is provided on the base frame 1, and the displacement mechanism is used to drive the sliding plate 2 to move and reset. A positioning mechanism is provided on the base frame 1, and an anti-shake mechanism is provided on the positioning mechanism. A workpiece 74 is placed on the anti-shake mechanism, and the positioning mechanism is used to position the workpiece 74 before processing, and the anti-shake mechanism is used to reduce the probability of shaking at the rear end of the workpiece 74 during processing.

[0032] The displacement mechanism includes a servo self-locking motor 51. The bottom of the base frame 1 is connected to two servo self-locking motors 51 by bolts. The two servo self-locking motors 51 are symmetrically arranged. Two rotating shafts 52 are connected to the base frame 1 by bearings. The upper ends of the two rotating shafts 52 are fixedly connected with overrunning clutches 53. The outer rings of the two overrunning clutches 53 are fixedly connected with gears 54. Two racks 55 are fixedly connected to the sliding plate 2. The two racks 55 are symmetrically arranged. One side of the two racks 55 is respectively meshed with the two gears 54. The servo self-locking motor 51 drives the gear 54 to rotate through the rotating shaft 52 and the overrunning clutch 53, and then drives the sliding plate 2 to move through the racks 55.

[0033] The positioning mechanism includes a fixed frame 61, and the top of the base frame 1 is connected to the fixed frame 61 by bolts. A servo self-locking motor 62 is fixedly connected to the upper part of the fixed frame 61, and a gear 63 is fixedly connected to the output shaft of the servo self-locking motor 62. A toothed disc 64 is rotatably connected to the upper part of the fixed frame 61, and a gear ring 65 is fixedly connected to the geared disc 64. The gear ring 65 is meshed with the gear 63. The servo self-locking motor 62 drives the gear ring 65 to rotate through the gear 63, and then drives the geared disc 64 to rotate. A centering component is provided on the fixed frame 61.

[0034] The centering component includes a mounting frame 66, four mounting frames 66 are welded to the upper part of the fixing frame 61, the four mounting frames 66 are evenly spaced apart, threaded rods 67 are rotatably connected to the four mounting frames 66, one ends of the four threaded rods 67 are connected to gear three 68 through a spline shaft, the four gear three 68 are meshed with the toothed disc 64, four threaded sleeves 69 are slidably connected to the upper part of the fixing frame 61, the four threaded sleeves 69 are evenly spaced apart, the four threaded sleeves 69 are respectively threadedly connected to the four threaded rods 67, the ends of the four threaded sleeves 69 close to each other are embedded with ball one 610, the toothed disc 64 drives the threaded rod 67 to rotate through the gear three 68, and then drives the threaded sleeve 69 and the ball one 610 to move, and a telescopic component is provided on the sliding plate 2.

[0035] The telescopic assembly includes a connecting frame 81, and the top of the sliding plate 2 is connected to the connecting frame 81 by bolts. An electric push rod 82 is fixed to the connecting frame 81. One end of the telescopic rod of the electric push rod 82 is located between the two electric thread rolling machines 4. One end of the telescopic rod of the electric push rod 82 located between the two electric thread rolling machines 4 is embedded with a ball 83. The workpiece 74 drives the connecting frame 81 to move through the ball 83 and the electric push rod 82, thereby driving the sliding plate 2 to move.

[0036] The anti-shake mechanism includes a guide frame 71, two guide frames 71 are welded on the fixed frame 61, the two guide frames 71 are symmetrically arranged, and the two guide frames 71 are slidably connected with a transmission frame 72, and the two transmission frames 72 are slidably connected to the protective shell 3. The two transmission frames 72 are respectively fixed to two different threaded sleeves 69, and one side of the two transmission frames 72 is fixed with a caliper 73. The threaded sleeve 69 drives the caliper 73 to move through the transmission frame 72, thereby clamping the rear end of the workpiece 74.

[0037] Initially, the electric push rod 82 is in a closed state, and the telescopic rod of the electric push rod 82 is in a locked state. After starting work, the staff places the workpiece 74 on one of the calipers 73, and inserts one end of the workpiece 74 into the upper part of the fixed frame 61, so that one end of the workpiece 74 is located between the two electric thread rolling machines 4 and contacts with the ball 2 83. After the workpiece 74 is placed, the staff starts the servo self-locking motor 2 62, and the output shaft of the servo self-locking motor 2 62 rotates to drive the gear 2 63 to rotate, and the gear 2 63 rotates to drive the gear ring 65 to rotate, and the gear ring 65 rotates to drive the toothed disc 64 to rotate, and the toothed disc 64 rotates to drive the four gears 3 68 to rotate, and the four gears 3 68 rotate to drive the four threaded rods 67 to rotate. Under the action of the threads on the threaded rods 67, the four threads The sleeve 69 drives the four ball bearings 610 to move in a direction approaching each other, and the four ball bearings 610 move in a direction approaching each other to contact and position the workpiece 74. Through the above operation, the workpiece 74 can be conveniently positioned before processing, the accuracy of thread rolling can be improved, and the thread rolling effect can be enhanced. The two thread sleeves 69 move in a direction approaching each other, driving the two transmission frames 72 to move in a direction approaching each other, and the two transmission frames 72 move in a direction approaching each other, driving the two calipers 73 to move in a direction approaching each other, and the two calipers 73 move in a direction approaching each other to clamp the rear end of the workpiece 74. Through the above operation, the probability of jitter at the rear end of the workpiece 74 during processing can be reduced, and the accuracy of thread rolling can be further improved. To further enhance the thread rolling effect, after the workpiece 74 is positioned, the staff first turns on the cooling spray rack 5 to spray coolant between the two electric thread rolling machines 4 to cool down, and then controls the two electric thread rolling machines 4 to clamp the workpiece 74 and start to rotate and roll the thread. The two electric thread rolling machines 4 will rotate in the same direction, extrude threads on the workpiece 74, and push the workpiece 74 to move in the direction close to the connecting frame 81. The movement of the workpiece 74 pushes the ball 2 83 and the electric push rod 82 to move, the movement of the electric push rod 82 drives the connecting frame 81 to move, the movement of the connecting frame 81 drives the sliding plate 2 to move, the movement of the sliding plate 2 drives the two racks 55 to move, and the movement of the rack 55 drives the gear 1 54 to rotate. Under the action of the overrunning clutch 53, the rotating shaft 52 will not rotate, and the workpiece 74 will rotate on its own during thread rolling. The electric thread rolling machine 4 is turned and moved horizontally at the same time, and is always in contact with the second ball 83. After the thread rolling is completed, the staff closes the cooling spray rack 5, controls the electric thread rolling machine 4 to reset and stop rotating, and then controls the telescopic rod of the electric push rod 82 to retract. The contraction of the telescopic rod of the electric push rod 82 drives the second ball 83 to disengage from the workpiece 74. Then the staff takes away the workpiece 74 after the thread rolling is completed, and then controls the telescopic rod of the electric push rod 82 to extend and reset. The extension and reset of the telescopic rod of the electric push rod 82 drives the second ball 83 to reset. Then the staff starts the two servo self-locking motors 1 51. The output shaft of the servo self-locking motor 1 51 rotates to drive the overrunning clutch 53 to rotate. The overrunning clutch 53 rotates to drive the gear 1 54 to rotate in the opposite direction. The reverse rotation of the gear 1 54 drives the rack 55 to move in the opposite direction.The reverse movement of the rack 55 drives the sliding plate 2 to move in the reverse direction, the reverse movement of the sliding plate 2 drives the connecting frame 81 to move in the reverse direction, the reverse movement of the connecting frame 81 drives the electric push rod 82 to move in the reverse direction, the reverse movement of the electric push rod 82 drives the ball roller 83 to move in the reverse direction, after the electric push rod 82 and the ball roller 83 are reset to the initial position, the staff turns off the two servo self-locking motors 1 51, and then the staff adjusts the servo self-locking motor 2 62 to rotate in the reverse direction, the output shaft of the servo self-locking motor 2 62 rotates in the reverse direction to drive the gear 2 63 to rotate in the reverse direction, the gear 2 63 rotates in the reverse direction to drive the gear ring 65 to rotate in the reverse direction, and the gear ring 65 rotates in the reverse direction with The movable gear plate 64 rotates in the opposite direction, and the gear plate 64 rotates in the opposite direction to drive the four gears 3 68 to rotate in the opposite direction, and the four gears 3 68 rotate in the opposite direction to drive the four threaded rods 67 to rotate in the opposite direction. Under the action of the threads on the threaded rods 67, the four threaded sleeves 69 drive the four balls 1 610 to move in the direction away from each other, wherein the two threaded sleeves 69 move in the direction away from each other to drive the two transmission frames 72 to move in the direction away from each other, and the two transmission frames 72 move in the direction away from each other to drive the two calipers 73 to move in the direction away from each other. After the calipers 73 are reset, the staff turns off the servo self-locking motor 2 62.

[0038] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 7 and Figure 9-11 As shown, it also includes a limiting mechanism, the limiting mechanism is provided on the protective shell 3, and the limiting mechanism is used to limit the end of the workpiece 74 after the thread rolling according to the overall diameter of the workpiece 74 after thread rolling. The limiting mechanism includes a second guide frame 91, and one side of the protective shell 3 is connected to the second guide frame 91 by bolts. Two sliding frames 92 are slidably connected to the second guide frame 91. The two sliding frames 92 are symmetrically arranged, and each of the sliding frames 92 has two slots. The two sliding frames 92 are provided with two slots. A return spring 93 is provided between each sliding frame 92 and the guide frame 2 91. Two groups of wear-resistant steel balls 94 are embedded and connected to each sliding frame 92. The number of wear-resistant steel balls 94 in each group is two. The workpiece 74 drives the sliding frame 92 to move by squeezing the wear-resistant steel balls 94, thereby adapting to the diameter of the workpiece 74. The two groups of wear-resistant steel balls 94 on the same sliding frame 92 are symmetrically arranged, and the two wear-resistant steel balls 94 in the same group are symmetrically arranged. A clamping assembly is provided on the guide frame 2 91.

[0039] The clamping assembly includes a clamping frame 95, and two clamping frames 95 are slidably connected to the guide frame 91, and the two clamping frames 95 are symmetrically arranged. Extrusion rollers 96 are fixedly connected to the two clamping frames 95, and two contact shafts 97 are welded to each clamping frame 95. The two contact shafts 97 on the same clamping frame 95 are symmetrically arranged. Two double-groove frames 98 are fixedly connected to the sliding plate 2, and the two double-groove frames 98 are symmetrically arranged. Two guide grooves are formed on the double-groove frames 98, and one ends of the two contact shafts 97 on the same side are respectively located in the two guide grooves of the double-groove frames 98 on the same side. The sliding plate 2 drives the contact shaft 97 to move through the double-groove frames 98, and then drives the extrusion rollers 96 through the clamping frame 95 to clamp the sliding frame 92.

[0040] The squeezing roller 96 is made of highly wear-resistant rubber material, and the squeezing roller 96 is made of highly wear-resistant rubber material to increase the friction of the surface.

[0041] It also includes ball three 10. Four groups of ball three 10 are embedded and connected to the two calipers 73. The number of ball three 10 in each group is three. The three ball three 10 in the same group are evenly spaced. The ball three 10 is used to make the workpiece 74 move more smoothly.

[0042] When one end of the workpiece 74 after thread rolling leaves the protective shell 3, it contacts two groups of wear-resistant steel balls 94 and squeezes the two groups of wear-resistant steel balls 94 in the direction away from each other, and the two groups of wear-resistant steel balls 94 move in the direction away from each other, driving the two sliding frames 92 to move in the direction away from each other, and the reset spring 93 is compressed, and the two sliding frames 92 move in the direction away from each other, driving the other two groups of wear-resistant steel balls 94 to move synchronously with the two groups of wear-resistant steel balls 94 close to the protective shell 3, and the workpiece 74 continues to move horizontally into between the other two groups of wear-resistant steel balls 94, and the sliding plate 2 moves horizontally, driving the two double-groove slot frames 98 to move horizontally. After the workpiece 74 enters between the four groups of wear-resistant steel balls 94, the two double-groove slot frames 98 squeeze the two contact shafts 97 on the same side in the direction of approaching each other, and the two contact shafts 97 on the same side move in the direction of approaching each other, driving the two clamping frames 95 to move in the direction of approaching each other, and the two clamping frames 95 move in the direction of approaching each other, driving the two squeezing rollers 96 to move towards each other. The two extrusion rollers 96 are respectively in contact with the card slots of the two sliding frames 92, and the two sliding frames 92 are clamped. Through the above operation, it is convenient to limit the end of the workpiece 74 after the workpiece 74 is rolled according to the diameter of the workpiece 74 after the thread rolling, further improve the accuracy of the thread rolling, and further enhance the thread rolling effect. After the workpiece 74 is taken away, the sliding plate 2 moves in the opposite direction to drive the two double-groove slot frames 98 to move in the opposite direction. The two double-groove slot frames 98 respectively squeeze the two contact shafts 97 on the same side in the direction away from each other, and the two contact shafts 97 on the same side move in the direction away from each other to drive the two clamping frames 95 to move in the direction away from each other. The two clamping frames 95 move in the direction away from each other to drive the two extrusion rollers 96 to move in the direction away from each other. The two extrusion rollers 96 are respectively out of contact with the two sliding frames 92, and the reset spring 93 will rebound and drive the two sliding frames 92 to move in the direction close to each other. The two sliding frames 92 move in the direction close to each other and drive the four groups of wear-resistant steel balls 94 to reset.

[0043] The squeezing roller 96 is made of highly wear-resistant rubber material, which can increase the friction with the sliding frame 92 , so that the squeezing roller 96 can clamp the sliding frame 92 more firmly.

[0044] The ball bearing 10 can reduce the friction between the workpiece 74 and the caliper 73, so that the workpiece 74 can move more smoothly.

[0045] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A screw feeding device for screw processing, characterized in that: It comprises a bottom frame, the top of the bottom frame is slidably connected with a sliding plate, and the top of the bottom frame is fixedly connected with a hollow protective shell; The two sides of the protective shell are open, and two symmetrically distributed electric thread rolling machines are arranged in the protective shell. A cooling spray rack is arranged on the upper part of the protective shell, and the liquid outlet of the liquid outlet pipe of the cooling spray rack is located above the side where the two electric thread rolling machines are close to each other; The base frame is provided with a displacement mechanism for driving the sliding plate to move and reset, the base frame is provided with a positioning mechanism, the positioning mechanism is provided with an anti-shake mechanism, and a workpiece is placed on the anti-shake mechanism.

2. A screw feeding device for screw processing according to claim 1, characterized in that: The displacement mechanism includes a servo self-locking motor 1, two of the servo self-locking motors 1 are fixedly connected to the bottom of the base frame, the two servo self-locking motors 1 are symmetrically arranged, two rotating shafts are rotatably connected to the base frame, the upper ends of the two rotating shafts are fixedly connected to overrunning clutches, the outer rings of the two overrunning clutches are fixedly connected to gear 1, and two racks are fixedly connected to the sliding plate, the two racks are symmetrically arranged, and one side of the two racks is respectively meshed with the two gears 1.

3. A screw feeding device for screw processing according to claim 2, characterized in that: The positioning mechanism includes a fixed frame, the top of the base frame is fixedly connected to the fixed frame, the upper part of the fixed frame is fixedly connected to a servo self-locking motor 2, the output shaft of the servo self-locking motor 2 is fixedly connected to a gear 2, the upper part of the fixed frame is rotatably connected to a toothed disc, the toothed disc is fixedly connected to a gear ring, the gear ring is meshed with the gear 2, and a centering component is provided on the fixed frame.

4. A screw feeding device for screw processing according to claim 3, characterized in that: The centering component includes a mounting frame, and four mounting frames evenly spaced are fixedly connected to the upper part of the fixing frame, and threaded rods are rotatably connected to the mounting frames, and gear three is fixedly connected to one end of the threaded rod, and gear three is meshed with the toothed disc. A threaded sleeve adapted to the threaded stem is slidably connected to the upper part of the fixing frame, and ball bearings are embedded and connected to one end of the four threaded sleeves close to each other, and a telescopic component is provided on the sliding plate.

5. A screw feeding device for screw processing according to claim 4, characterized in that: The telescopic assembly includes a connecting frame, the top of the sliding plate is fixedly connected to the connecting frame, an electric push rod is fixedly connected to the connecting frame, one end of the electric push rod telescopic rod is located between the two electric thread rolling machines, and one end of the electric push rod telescopic rod located between the two electric thread rolling machines is embedded with ball 2.

6. A screw feeding device for screw processing according to claim 5, characterized in that: The anti-shake mechanism includes a guide frame 1, two guide frames 1 are provided on the fixed frame, the two guide frames 1 are symmetrically arranged, the two guide frames 1 are slidably connected to a transmission frame, the two transmission frames are slidably connected to the protective shell, the two transmission frames are respectively fixedly connected to two different threaded sleeves, and a caliper is fixedly connected to one side of the two transmission frames.

7. A screw feeding device for screw processing according to claim 6, characterized in that: It also includes a limiting mechanism arranged on the protective shell, the limiting mechanism is used to limit one end of the workpiece after the thread rolling is completed according to the overall diameter of the workpiece after thread rolling, the limiting mechanism includes a second guide frame, the second guide frame is fixedly connected to one side of the protective shell, two symmetrically arranged sliding frames are slidably connected to the second guide frame, two slots are opened on the sliding frame, a return spring is arranged between the sliding frame and the second guide frame, two groups of symmetrically arranged wear-resistant steel balls are embedded in the sliding frame, each group of the wear-resistant steel balls includes a number of symmetrically arranged wear-resistant steel balls, and a clamping assembly is provided on the second guide frame.

8. A screw feeding device for screw processing according to claim 7, characterized in that: The clamping assembly includes a clamping frame, two symmetrically arranged clamping frames are slidably connected to the guide frame, an extrusion roller is fixedly connected to the clamping frame, two symmetrically arranged contact shafts are fixedly connected to the clamping frame, two symmetrically arranged double-groove frames are fixedly connected to the sliding plate, two guide grooves are formed on the double-groove frames, and one end of the two contact shafts on the same side are respectively located in the two guide grooves of the double-groove frames on the same side.

9. A screw feeding device for screw processing according to claim 8, characterized in that: The squeezing roller is made of highly wear-resistant rubber material.

10. A screw feeding device for screw processing according to claim 8, characterized in that: It also includes ball three. Four groups of ball three are embedded and connected to the two calipers. The number of ball three in each group is three, and the three ball three in the same group are evenly spaced.

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