A screw feeding device for screw machining

Abstract

The present application relates to the field of screw processing, especially to a screw feeding device for screw processing. The technical problem is that the existing feeding device is inconvenient to position the workpiece before processing when feeding the screw, the rear end of the workpiece is prone to shaking, and it is difficult to limit the end of the workpiece after rolling thread according to the diameter of the workpiece, thereby leading to low precision of rolling thread and poor rolling thread effect. A screw feeding device for screw processing, comprising a chassis, a sliding plate is slidably connected to the top of the chassis, a protective shell is fixedly connected to the top of the chassis, and two electric thread rolling machines are arranged in the protective shell. Gear three is driven to rotate by the toothed disc, the threaded rod is driven to rotate by gear three, the ball one is driven to move towards each other by the threaded sleeve, four ball one contacts and positions the workpiece, which can conveniently position the workpiece before processing, improve the precision of rolling thread, and enhance the rolling thread effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of screw machining, in particular to a screw feeding device for screw machining. BACKGROUND

[0002] Screw machining refers to a process of machining threads on a round shaft, common screw machining methods include turning, tapping, wire drawing and thread rolling, etc., among which thread rolling generally uses two thread rolling wheels rotating in the same direction to extrude the round shaft to form threads, and thread rolling has the advantages of higher strength and hardness, and stronger wear resistance and toughness.

[0003] When a thread rolling machine machines threads, a feeding device is needed for feeding, the existing screw feeding device generally directly pushes the workpiece into the thread rolling machine through an electric or pneumatic push rod, which is not convenient for positioning the workpiece before machining, and as the thread rolling proceeds, the front end of the workpiece is clamped while the rear end is not restricted, which is prone to shaking, and the diameter of the end of the workpiece after thread rolling increases, while the traditional feeding device generally has a fixed outlet diameter, which is not convenient for limiting the end of the workpiece after thread rolling, thereby reducing the accuracy of thread rolling and the effect of thread rolling. SUMMARY

[0004] In order to overcome the shortcomings of the existing feeding device, which is not convenient for positioning the workpiece before machining, the rear end of the workpiece is prone to shaking, and it is difficult to limit the end of the workpiece after thread rolling, thereby reducing the accuracy of thread rolling and the effect of thread rolling, the present application provides a screw feeding device for screw machining, which can conveniently position the workpiece before machining, reduce the probability of shaking of the rear end of the workpiece, and limit the end of the workpiece after thread rolling according to the diameter of the workpiece, thereby improving the accuracy of thread rolling and enhancing the effect of thread rolling.

[0005] The technical scheme of the present application is a screw feeding device for screw machining, which comprises a chassis, a sliding plate connected to the top of the chassis in a sliding manner, a protective shell fixed to the top of the chassis, the protective shell being hollow, the two sides of the protective shell being open, two electric thread rolling machines being provided in the protective shell, the two electric thread rolling machines being symmetrically arranged, a cooling spray frame being provided on the upper part of the protective shell, the liquid outlet of the liquid outlet pipe of the cooling spray frame being located above the side of the two electric thread rolling machines that are closer to each other, a displacement mechanism being provided on the chassis, the displacement mechanism being used to drive the sliding plate to move and reset, a positioning mechanism being provided on the chassis, a shake prevention mechanism being provided on the positioning mechanism, a workpiece being placed on the shake prevention mechanism, the positioning mechanism being used to position the workpiece before machining, and the shake prevention mechanism being used to reduce the probability of shaking of the rear end of the workpiece during machining.

[0006] In a preferred embodiment of the present application, the displacement mechanism comprises two servo locking motors one, the bottom of the chassis is fixed with two servo locking motors one, two servo locking motors one is symmetrically arranged, the chassis is rotatably connected with two rotating shafts, the upper end of two rotating shafts is fixed with overrunning clutch, the outer ring of two overrunning clutches is fixed with gear one, the sliding plate is fixed with two racks, two racks are symmetrically arranged, one side of two racks is respectively engaged with two gear one.

[0007] In a preferred embodiment of the present application, the positioning mechanism comprises a fixed frame, the top of the chassis is fixed with the fixed frame, the upper part of the fixed frame is fixed with servo locking motor two, the output shaft of the servo locking motor two is fixed with gear two, the upper part of the fixed frame is rotatably connected with the toothed disc, the toothed disc is fixed with the gear ring, the gear ring is engaged with the gear two, the fixed frame is provided with a centering assembly.

[0008] In a preferred embodiment of the present application, the centering assembly comprises a mounting frame, the upper part of the fixed frame is fixed with four mounting frames, four mounting frames are uniformly spaced, four mounting frames are rotatably connected with threaded rods, one end of four threaded rods is fixed with gear three, four gear three is engaged with the toothed disc, the upper part of the fixed frame is slidably connected with four threaded sleeves, four threaded sleeves are uniformly spaced, four threaded sleeves are respectively connected with four threaded rods through thread, one end of four threaded sleeves close to each other is embeddedly connected with ball one, the sliding plate is provided with telescopic assembly.

[0009] In a preferred embodiment of the present application, the telescopic assembly comprises a connecting frame, the top of the sliding plate is fixed with the connecting frame, the connecting frame is fixed with electric push rod, one end of the electric push rod telescopic rod is located between two electric thread rolling machines, one end of the electric push rod telescopic rod between two electric thread rolling machines is embeddedly connected with ball two.

[0010] In a preferred embodiment of the present application, the anti-shake mechanism comprises a guide frame one, the fixed frame is provided with two guide frames one, two guide frames one is symmetrically arranged, two guide frames one is slidably connected with transmission frame, two transmission frames are slidably connected with the protective shell, two transmission frames are respectively fixed with two different threaded sleeves, one side of two transmission frames is fixed with calipers.

[0011] In a preferred embodiment of the present application, a limiting mechanism is further included, the limiting mechanism is arranged on the protective shell, and is used for limiting the end of the workpiece after thread rolling according to the overall diameter of the workpiece after thread rolling, the limiting mechanism comprises a second guide frame, the second guide frame is fixedly connected to one side of the protective shell, two sliding frames are slidably connected to the second guide frame, the two sliding frames are symmetrically arranged, two clamping grooves are formed in each sliding frame, a reset spring is arranged between each sliding frame and the second guide frame, two groups of wear-resistant steel balls are embeddedly connected to each sliding frame, 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 arranged on the second guide frame.

[0012] In a preferred embodiment of the present application, the clamping assembly comprises a clamping frame, two clamping frames are slidably connected to the second guide frame, the two clamping frames are symmetrically arranged, an extrusion roller is fixedly connected to each clamping frame, 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 brackets are fixedly connected to the sliding plate, the two double-groove brackets are symmetrically arranged, two guide grooves are formed in the double-groove bracket, and one end of each of the two contact shafts on the same side is located in the guide groove of the double-groove bracket on the same side.

[0013] In a preferred embodiment of the present application, the extrusion roller is made of high-wear-resistant rubber.

[0014] In a preferred embodiment of the present application, four groups of the third rolling balls are embeddedly connected to each clamp, the number of the third rolling balls in each group is three, and the three third rolling balls in the same group are uniformly and spacedly arranged.

[0015] Compared with the prior art, the present application has the following advantages: 1. The output shaft of the servo self-locking motor two rotates to drive the gear two to rotate, the gear two drives the gear ring to rotate, the gear ring drives the gear disc to rotate, the gear disc drives the four gear threes to rotate, and the four threaded rods are driven to move in the direction of approaching each other under the action of threads on the threaded rods, the four first rolling balls contact and position the workpiece, the workpiece can be conveniently positioned before machining, the precision of thread rolling is improved, and the thread rolling effect is enhanced.

[0016] 2. By moving two threaded sleeves closer to each other, two transmission frames move closer to each other, which in turn moves two calipers closer to each other. The two calipers clamp the rear end of the workpiece, reducing the chance of vibration at the rear end during workpiece processing, further improving the accuracy of thread rolling, and enhancing the thread rolling effect.

[0017] 3. The workpiece is threaded at one end, and two sets of wear-resistant steel balls are pressed apart. These two sets of wear-resistant steel balls drive two sliding frames to move apart, and simultaneously drive the other two sets of wear-resistant steel balls. When the sliding plate moves horizontally, it drives two double-groove frames to move horizontally. After the workpiece enters between the four sets of wear-resistant steel balls, the two double-groove frames press the two contact shafts on the same side toward each other. This causes the two clamping frames to drive the two pressing rollers to clamp the two sliding frames. This allows for easy positioning of the threaded end of the workpiece according to the diameter after threading, further improving the accuracy of threading and enhancing the threading effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

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

[0020] Figure 3 This is a three-dimensional structural diagram of the displacement mechanism of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the telescopic component of the present invention.

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

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

[0024] Figure 7 This is a three-dimensional structural diagram of the positioning mechanism, anti-shake mechanism, and ball bearings of the present invention.

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

[0026] Figure 9 This is a three-dimensional structural diagram of the caliper and ball bearing of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the limiting mechanism of the present invention.

[0028] Figure 11 Splitter schematic diagram of the limit mechanism of the application.

[0029] Wherein, the above drawings include the following reference signs: 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, toothed disc, 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, return spring, 94, wear-resistant steel ball, 95, clamping frame, 96, extrusion roller, 97, contact shaft, 98, double-groove groove frame, 10, ball three. DETAILED DESCRIPTION

[0030] Although the present application can be described in relation to a particular application or industry, those skilled in the art will recognize a broader applicability of the present application. Those of ordinary skill in the art will recognize that terms such as: above, below, upper, lower, and the like are used as descriptions of relative positioning, and are not meant to limit the scope of the present application as defined by the appended claims. Any numerical designations such as: first or second are merely illustrative, and are not intended to limit the scope of the present application in any way.

[0031] Example 1: A screw feeding device for screw machining, as shown in Figures 1-9 includes a base frame 1, the top of the base frame 1 is slidably connected with a sliding plate 2, the top of the base frame 1 is fixedly connected with a protective shell 3, the protective shell 3 is hollow, the two sides of the protective shell 3 are open, two electric thread rolling machines 4 are arranged in the protective shell 3, the protective shell 3 is used for protecting the electric thread rolling machines 4, the two electric thread rolling machines 4 are symmetrically arranged, a cooling spray frame 5 is arranged on the upper part of the protective shell 3, the liquid outlet of the liquid outlet pipe of the cooling spray frame 5 is located above the side of the two electric thread rolling machines 4 that are close to each other, the cooling spray frame 5 is used for spraying cooling liquid to cool the electric thread rolling machines 4 during thread rolling, a displacement mechanism is arranged on the base frame 1, the displacement mechanism is used to drive the sliding plate 2 to move and reset, a positioning mechanism is arranged on the base frame 1, the positioning mechanism is provided with an anti-shake mechanism, the workpiece 74 is placed on the anti-shake mechanism, the positioning mechanism is used to position the workpiece 74 before machining, and the anti-shake mechanism is used to reduce the probability of shaking of the rear end of the workpiece 74 during machining.

[0032] The displacement mechanism comprises servo self-locking motors 51, the bottom of the chassis 1 is connected with two servo self-locking motors 51 through bolts, the two servo self-locking motors 51 are symmetrically arranged, two rotating shafts 52 are connected to the chassis 1 through 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 gear wheels one 54, two racks 55 are fixedly connected to the sliding plate 2, the two racks 55 are symmetrically arranged, one side of each of the two racks 55 is engaged with one of the two gear wheels one 54, the servo self-locking motor one 51 drives the gear wheel one 54 to rotate through the rotating shaft 52 and the overrunning clutch 53, and then drives the sliding plate 2 to move through the rack 55.

[0033] The positioning mechanism comprises a fixing frame 61, the top of the chassis 1 is connected with the fixing frame 61 through bolts, the upper part of the fixing frame 61 is fixedly connected with a servo self-locking motor two 62, the output shaft of the servo self-locking motor two 62 is fixedly connected with a gear wheel two 63, the upper part of the fixing frame 61 is rotatably connected with a toothed disc 64, the toothed disc 64 is fixedly connected with a gear ring 65, the gear ring 65 is engaged with the gear wheel two 63, the servo self-locking motor two 62 drives the gear ring 65 to rotate through the gear wheel two 63, and then drives the toothed disc 64 to rotate, and the fixing frame 61 is provided with a centering assembly.

[0034] The centering assembly comprises mounting frames 66, the upper part of the fixing frame 61 is welded with four mounting frames 66, the four mounting frames 66 are uniformly and spacedly arranged, four threaded rods 67 are rotatably connected to the four mounting frames 66, one end of each of the four threaded rods 67 is connected with a gear wheel three 68 through a spline shaft, the four gear wheels three 68 are engaged with the toothed disc 64, the upper part of the fixing frame 61 is slidably connected with four threaded sleeves 69, the four threaded sleeves 69 are uniformly and spacedly arranged, the four threaded sleeves 69 are connected with the four threaded rods 67 through threads respectively, one end of each of the four threaded sleeves 69, which are close to each other, is embeddedly connected with a ball one 610, the toothed disc 64 drives the threaded rod 67 to rotate through the gear wheel three 68, and then drives the threaded sleeve 69 and the ball one 610 to move, and the sliding plate 2 is provided with an extension assembly.

[0035] The extension assembly comprises a connecting frame 81, the top of the sliding plate 2 is connected with the connecting frame 81 through bolts, the connecting frame 81 is fixedly connected with an electric push rod 82, 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, which is located between the two electric thread rolling machines 4, is embeddedly connected with a ball two 83, the workpiece 74 drives the connecting frame 81 to move through the ball two 83 and the electric push rod 82, and then drives the sliding plate 2 to move.

[0036] The anti-shake mechanism comprises a guide frame 71, two guide frames 71 are welded on the fixing frame 61, the two guide frames 71 are symmetrically arranged, a transmission frame 72 is slidably connected to each of the two guide frames 71, the two transmission frames 72 are slidably connected with the protective shell 3, two different threaded sleeves 69 are fixedly connected with the two transmission frames 72 respectively, a caliper 73 is fixedly connected to one side of each of the two transmission frames 72, 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] At the beginning, the electric push rod 82 is in the closed state, and the telescopic rod of the electric push rod 82 is in the locked state. After starting work, the worker places the workpiece 74 on one of the clamps 73, and inserts one end of the workpiece 74 into the upper part of the fixing frame 61, so that one end of the workpiece 74 is located between the two electric thread rolling machines 4 and in contact with the ball 83. After the workpiece 74 is placed, the worker starts the servo locking motor 62. The output shaft of the servo locking motor 62 rotates to drive the gear 63 to rotate. The gear 63 rotates to drive the gear ring 65 to rotate. The gear ring 65 rotates to drive the gear plate 64 to rotate. The gear plate 64 rotates to drive the four gears 68 to rotate. The four gears 68 rotate to drive the four threaded rods 67 to rotate. Under the action of the threads on the threaded rods 67, the four threaded sleeves 69 drive the four balls 610 to move towards each other. The four balls 610 move towards each other and contact and position the workpiece 74. Through the above operation, the workpiece 74 can be conveniently positioned before machining, the accuracy of thread rolling is improved, and the thread rolling effect is enhanced. Two threaded sleeves 69 move towards each other to drive two transmission frames 72 to move towards each other. The two transmission frames 72 move towards each other to drive the two clamps 73 to move towards each other. The two clamps 73 move towards each other to clamp the rear end of the workpiece 74. Through the above operation, the probability of shaking of the rear end of the workpiece 74 during machining can be reduced, the accuracy of thread rolling is further improved, and the thread rolling effect is further enhanced. After the workpiece 74 is positioned, the worker first starts the cooling spray frame 5 to spray coolant between the two electric thread rolling machines 4 for cooling. Then the worker controls the two electric thread rolling machines 4 to clamp the workpiece 74 and starts to rotate the thread. The two electric thread rolling machines 4 rotate in the same direction to extrude threads on the workpiece 74 and push the workpiece 74 towards the connecting frame 81. The workpiece 74 moves to push the ball 83 and the electric push rod 82. The electric push rod 82 moves to drive the connecting frame 81 to move. The connecting frame 81 moves to drive the sliding plate 2 to move. The sliding plate 2 moves to drive the two racks 55 to move. The rack 55 moves to drive the gear 54 to rotate. Under the action of the overrunning clutch 53, the shaft 52 does not rotate. The workpiece 74 rotates horizontally while rotating during thread rolling, and is always in contact with the ball 83. After thread rolling is completed, the worker turns off the cooling spray frame 5, controls the electric thread rolling machine 4 to reset and stop rotating, controls the telescopic rod of the electric push rod 82 to retract, and the telescopic rod of the electric push rod 82 retracts to drive the ball 83 out of contact with the workpiece 74. Then the worker takes away the workpiece 74 with completed thread rolling, controls the telescopic rod of the electric push rod 82 to extend and reset, and the telescopic rod of the electric push rod 82 extends to drive the ball 83 to reset. Then the worker starts the two servo locking motors 51. The output shaft of the servo locking motor 51 rotates to drive the overrunning clutch 53 to rotate. The overrunning clutch 53 rotates to drive the gear 54 to rotate in the opposite direction. The gear 54 rotates in the opposite direction to drive the rack 55 to move in the opposite direction.The rack 55 moves reversely to drive the sliding plate 2 to move reversely, the sliding plate 2 moves reversely to drive the connecting frame 81 to move reversely, the connecting frame 81 moves reversely to drive the electric push rod 82 to move reversely, the electric push rod 82 moves reversely to drive the ball 83 to move reversely, after the electric push rod 82 and the ball 83 reset to the initial position, the worker closes the two servo locking motors 51, then the worker adjusts the reverse rotation of the servo locking motor 62, the output shaft of the servo locking motor 62 reversely rotates to drive the gear 63 to reversely rotate, the gear 63 reversely rotates to drive the gear ring 65 to reversely rotate, the gear ring 65 reversely rotates to drive the gear disc 64 to reversely rotate, the gear disc 64 reversely rotates to drive the four gears 68 to reversely rotate, the four gears 68 reversely rotate to drive the four threaded rods 67 to reversely rotate, under the action of the threads on the threaded rods 67, the four threaded sleeves 69 drive the four balls 610 to move away from each other, two threaded sleeves 69 move away from each other to drive two transmission frames 72 to move away from each other, two transmission frames 72 move away from each other to drive two clamps 73 to move away from each other, after the clamp 73 resets, the worker closes the servo locking motor 62.

[0038] Example 2: on the basis of example 1, as shown in Figure 1 、 Figure 7 and Figures 9-11 It also includes a limiting mechanism, the protective shell 3 is provided with the limiting mechanism, the limiting mechanism is used for limiting the one end of the workpiece 74 after rolling, the limiting mechanism includes a guide frame 91, one side of the protective shell 3 is connected with the guide frame 91 through bolts, the guide frame 91 is slidably connected with two sliding frames 92, the two sliding frames 92 are symmetrically arranged, two clamping grooves are formed in each sliding frame 92, the two sliding frames 92 are provided with reset springs 93, two groups of wear-resistant steel balls 94 are embeddedly connected on 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 extruding the wear-resistant steel ball 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, the guide frame 91 is provided with a clamping assembly.

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

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

[0041] Further comprising ball three 10, four groups of ball three 10 are embeddedly connected on the two calipers 73, the number of each group of ball three 10 is three, and the three ball three 10 in the same group are uniformly spaced, and the ball three 10 is used for making the workpiece 74 move more smoothly.

[0042] When the finished end of the workpiece 74 is out of the protective shell 3, it is in contact with two groups of wear-resistant steel balls 94, and the two groups of wear-resistant steel balls 94 are extruded away from each other, the movement of the two groups of wear-resistant steel balls 94 away from each other drives the two sliding frames 92 to move away from each other, and the compression spring 93 is compressed, the movement of the two sliding frames 92 away from each other drives 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 the other two groups of wear-resistant steel balls 94, the horizontal movement of the sliding plate 2 drives the two double-groove slot frames 98 to move horizontally, and after the workpiece 74 enters between the four groups of wear-resistant steel balls 94, the two double-groove slot frames 98 respectively extrude the two contact shafts 97 on the same side towards each other, the movement of the two contact shafts 97 on the same side towards each other drives the two clamping frames 95 to move towards each other, the movement of the two clamping frames 95 towards each other drives the two extrusion rollers 96 to move towards each other, and the two extrusion rollers 96 are respectively in contact with the clamping grooves of the two sliding frames 92 and clamp the two sliding frames 92, through the above operation, the finished end of the workpiece 74 after rolling can be conveniently limited according to the diameter of the workpiece 74 after rolling, and the rolling precision is further improved, and the rolling effect is further enhanced, and after the workpiece 74 is taken away, the reverse movement of the sliding plate 2 drives the two double-groove slot frames 98 to move reversely, the two double-groove slot frames 98 respectively extrude the two contact shafts 97 on the same side away from each other, the movement of the two contact shafts 97 on the same side away from each other drives the two clamping frames 95 to move away from each other, the movement of the two clamping frames 95 away from each other drives the two extrusion rollers 96 to move away from each other, and the two extrusion rollers 96 are respectively out of contact with the two sliding frames 92, the reset spring 93 rebounds and drives the two sliding frames 92 to move towards each other, and the movement of the two sliding frames 92 towards each other drives the four groups of wear-resistant steel balls 94 to reset.

[0043] The extrusion roller 96 is made of high-wear-resistant rubber material, which can increase the friction on the sliding frame 92, and the extrusion roller 96 can clamp the sliding frame 92 more stably.

[0044] The ball three 10 can reduce the friction between the workpiece 74 and the clamp 73, so that the workpiece 74 moves more smoothly.

[0045] The above embodiments are provided for those skilled in the art to implement or use the present application, and those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present application, therefore the protection scope of the present application is not limited by the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A screw feed device for screw machining, characterized in that, It includes a base frame, a sliding plate is slidably connected to the top of the base frame, and a hollow protective shell is fixed to the top of the base frame; The protective shell has openings on both sides, and two symmetrically distributed electric thread rolling machines are provided inside the protective shell. A cooling spray frame is provided on the upper part of the protective shell, and the outlet of the liquid outlet pipe of the cooling spray frame is located above the two electric thread rolling machines on the side that is 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 the workpiece is placed on the anti-shake mechanism; The positioning mechanism includes a fixed frame, the fixed frame is fixedly connected to the top of the base frame, a servo self-locking motor II is fixedly connected to the upper part of the fixed frame, a gear II is fixedly connected to the output shaft of the servo self-locking motor II, a gear disk is rotatably connected to the upper part of the fixed frame, a gear ring is fixedly connected to the gear disk, the gear ring meshes with the gear II, and a centering component is provided on the fixed frame. The centering component includes a mounting frame. Four evenly spaced mounting frames are fixedly connected to the upper part of the fixed frame. Each mounting frame is rotatably connected to a threaded rod. One end of each threaded rod is fixedly connected to a gear three, which meshes with the gear plate. A threaded sleeve adapted to the threaded rod is slidably connected to the upper part of the fixed frame. One ball is embedded at one end of each of the four threaded sleeves that are close to each other. A telescopic component is provided on the sliding plate. 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 a ball bearing is embedded in the end of the electric push rod telescopic rod located between the two electric thread rolling machines. The anti-shake mechanism includes a guide frame, and two guide frames are provided on the fixed frame. The two guide frames are symmetrically arranged, and a transmission frame is slidably connected to each of the two guide frames. The two transmission frames are slidably connected to the protective shell, and the two transmission frames are respectively fixedly connected to two different threaded sleeves. A caliper is fixedly connected to one side of each of the two transmission frames.

2. A screw feed device for screw machining according to claim 1, characterized in that, The displacement mechanism includes a servo self-locking motor. Two servo self-locking motors are fixedly connected to the bottom of the base frame and are arranged symmetrically. Two rotating shafts are rotatably connected to the base frame. An overrunning clutch is fixedly connected to the upper end of each of the two rotating shafts. A gear is fixedly connected to the outer ring of each of the two overrunning clutches. Two racks are fixedly connected to the sliding plate and are arranged symmetrically. One side of each rack meshes with one of the two gears.

3. A screw feed device for screw machining according to claim 2, characterized in that, It also includes a limiting mechanism disposed on the protective shell. The limiting mechanism is used to limit the end of the workpiece that has been threaded according to the overall diameter of the workpiece after threading. 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 frames. A return spring is provided between the sliding frames and the second guide frame. Two sets of symmetrically arranged wear-resistant steel balls are embedded in the sliding frames. Each set of wear-resistant steel balls includes two symmetrically arranged wear-resistant steel balls. A clamping component is provided on the second guide frame.

4. A screw feed device for screw machining according to claim 3, 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 fixed to the clamping frame. Two symmetrically arranged contact shafts are fixed to the clamping frame. Two symmetrically arranged double-groove frames are fixed to the sliding plate. Two guide grooves are opened on the double-groove frames. One end of the two contact shafts on the same side is located in the two guide grooves of the double-groove frames on the same side.

5. A screw feed device for screw machining according to claim 4, characterized in that, The extrusion roller is made of highly wear-resistant rubber.

6. A screw feed device for screw machining according to claim 4, characterized in that, It also includes ball bearings. Each of the two calipers has four sets of ball bearings embedded in it. Each set of ball bearings has three ball bearings, and the three ball bearings in the same set are evenly spaced.

Images