Bar surface oxide layer turning device

Abstract

The invention belongs to the field of lathes, and provides a bar surface oxide layer turning device which comprises a machine box, a lathe body, a feeding sliding seat, a feeding and retracting part, a tool rest, a main shaft part and a set of three-jaw clamping chuck, a three-jaw supporting chuck is arranged at the end, away from the main shaft part, of the lathe body, and the three-jaw supporting chuck is arranged on a supporting frame. The two feed sliding seats are respectively a front sliding seat and a rear sliding seat, opposite surfaces of the front sliding seat and the rear sliding seat are provided with a butt-inserting pair, the center of the butt-inserting pair is provided with a feed lead screw, the power input end of the feed lead screw is provided with a first motor, and the case is provided with a discharge hole; and a variable-diameter supporting feeding component with a variable-diameter feeding port is arranged between the discharging hole and the main shaft component. The automatic feeding device is reasonable in design, can be conveniently connected with automatic feeding equipment, facilitates improvement of the automation degree of a workshop, facilitates improvement of the turning efficiency, can be suitable for long bar machining and treatment and is suitable for large-scale popularization.

Description

Technical Field

[0001] The invention belongs to the field of lathes, and in particular relates to a device for turning an oxide layer on the surface of a bar. Background Art

[0002] In machining workshops, many products are made of bars as the main blanks, such as transmission shafts, rod parts, bolts, and gear parts in shaft parts. Since bar blanks are generally long, they are only cut into blanks of corresponding lengths in specific workshop production. Some workshops will turn off the surface oxide layer in the specific processing steps after the bars are cut into blanks. However, for some blanks with smaller length requirements, the oxide layer needs to be turned off before the bars are cut to reduce the damage to the finishing tool and the frequency of tool changes.

[0003] At present, many lathes adopt a non-axial through-type design and include at least a spindle and a tailstock, such as the existing patent CN202222698494.8 discloses a large through-hole heavy-cutting CNC lathe and the lathe disclosed in CN88206373.1. Such lathes have some problems when turning long bars. For example, if the long bars are fed by automatic equipment, they need to be clamped manually. In particular, the tailstock limits the automatic connection between the turning equipment and the automatic loading equipment, affecting the automation upgrade of the workshop.

[0004] Furthermore, many lathes are generally only equipped with a set of tool holders and slides for turning in the turning station due to the need for tool feeding of the tool holder and its slide. For processing long bars, the processing cycle will be extended. The existing patent CN202220938147.5 discloses a bar surface oxide layer turning device, including a tool holder, a first turning mechanism and a second turning mechanism. The first turning mechanism includes a first tool holder and a first adjustment component; the second turning mechanism includes a second tool holder and a second adjustment component; the bar surface oxide layer turning device can improve processing efficiency. However, the turning device has certain deficiencies in automatic advance and retreat and tool feeding, so it also has a significant impact on the actual application of the device. Summary of the invention

[0005] In response to the technical problems existing in the above-mentioned lathes, the present invention proposes a bar surface oxide layer turning device which has a reasonable design, is easy to connect with automatic feeding equipment, is beneficial to improving the degree of automation in the workshop, is beneficial to improving the turning efficiency and is suitable for the processing and treatment of long bars.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is that the rod surface oxide layer turning device provided by the present invention comprises a chassis and a lathe body, the lathe body is provided with a tool slide, a tool feed and retract component and a tool holder that perform linear reciprocating motion along its length direction, the chassis is provided with a spindle component and a set of three-jaw clamping chucks, the lathe body is provided with a three-jaw support chuck at one end away from the spindle component, the three-jaw support chuck is arranged on a support frame, the support frame is provided with a mounting port for installing the three-jaw support chuck and for feeding, the tool feed and retract component and the tool holder are distributed in pairs on the front and rear sides of the lathe body, There are two tool slides in total, namely the front slide and the rear slide. A pair of plug-in pairs are arranged on the opposite surfaces of the front slide and the rear slide. A tool feed screw is arranged at the center of the pair of plug-in pairs. A first motor is arranged at the power input end of the tool feed screw. The first motor and the tool feed screw are used to drive the front slide and the rear slide to move towards and away from each other. A discharge hole is arranged on the side of the chassis opposite to the position of the main shaft component. A variable diameter support feed component is arranged between the discharge hole and the main shaft component. The variable diameter support feed component includes a variable diameter feed port which is coaxial with the center of the discharge hole and the center of the main shaft component.

[0007] Preferably, a pair of guide rods are provided on both sides of the lathe body, and the inner sides of the front slide and the rear slide are slidably matched with the guide rods. The plug-in pair includes a slot and a plug plate, one end of the slot is a blocked end and the other end is an open end, the plug plate is plug-fitted with the slot and the length of the plug plate is less than the slot length of the slot, and a screw thread is provided at one end of the slot and the center of the plug plate, and the screw thread cooperates with the tool feed screw.

[0008] Preferably, the inner wall of the slot includes a C-shaped surface and straight planes extending horizontally from both sides of the C-shaped surface, the plug plate includes a columnar section cooperating with the C-shaped surface and a flat plate section cooperating with the straight plane, and a pressure plate is arranged above the plug plate, and the bottom surface of the pressure plate is relatively matched with the top surface of the slot.

[0009] Preferably, the three-jaw supporting chuck includes a chuck, an adjusting mechanism is arranged inside the chuck, the end face of the chuck is provided with at least three evenly distributed radial openings, the radial openings are provided with jaws cooperating with the adjusting mechanism, and an eccentric section is provided at one end of the jaw facing the center of the chuck, and the eccentric section is used to eccentrically support the workpiece.

[0010] Preferably, the front slide and the rear slide are both provided with self-cleaning components for cleaning the tool feed screw. The self-cleaning components include a pipe interface inclined toward the interior of the plug-in pair, and a hose is provided at one end of the pipe interface for connecting to a self-cleaning medium supply end.

[0011] Preferably, the variable diameter supporting feeding component comprises a fixed tube docked with the discharge hole and the end of the main shaft component, the inner wall of the fixed tube is provided with three directional plates distributed in a circular array, the center of the directional plate is provided with a radial long hole, the radial long hole is provided with a clamping plate which moves radially toward the center of the fixed tube, the clamping plate is provided with at least two push rods at the end facing away from the center of the fixed tube, the outer side of the fixed tube is provided with a lifting ring, the top of the lifting ring is provided with a driving cylinder, the internal hinge of the lifting ring is provided with two symmetrically distributed brake arms, a lifting hinge mechanism connected to the two brake arms is provided below the two brake arms, and a traction mechanism cooperating with the lifting ring is provided at the bottom of the lifting hinge mechanism.

[0012] Preferably, the brake arm comprises a plurality of fold line segments connected in sequence and the connection from the head end to the tail end of the brake arm is Z-shaped, a brake guide hole is provided at the end of the brake arm, the brake guide hole is slidably matched with a lifting hinge mechanism, the lifting hinge mechanism comprises a hinge seat, the hinge seat is provided with a hinge shaft that can movably cooperate with the two brake arms at the same time, a lifting rod is provided at the bottom of the hinge seat, and a buffer spring is provided on the outside of the lifting rod.

[0013] Preferably, lifting guide rods are provided on both sides of the hinge seat, and the lifting guide rods cooperate with the through holes on the lifting ring.

[0014] Preferably, the traction mechanism includes two traction rods symmetrically connected to the lifting ring, a lever plate is provided at the bottom of the traction rod, a traction shaft hole slidingly matched with the traction rod is provided on the lever plate, a fixed hinge is provided at the bottom of the lever plate, the fixed hinge is connected to the chassis, the facing ends of the two lever plates are in vertically movable contact and the top of one of the lever plates is in movably contact with the lifting hinge mechanism.

[0015] Preferably, the radial long hole is a countersunk structure, and two rows of return springs connected to the radial long holes are arranged on both sides of the clamping plate.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. The rod surface oxide layer turning device provided by the present invention can connect the device with the automatic feeding equipment by adopting the feedable support frame and the three-jaw support chuck, and together with the three-jaw clamping chuck, ensure the stability of the long rod during the turning process; and the chassis adopts an axial through-type design, which can allow the long rod to be transmitted from the variable diameter support feeding component, and is suitable for long rods of different diameters, which is beneficial to improving the connection performance of the equipment in the workshop and the processing efficiency of the long rods.

[0018] 2. The rod surface oxide layer turning device provided by the present invention can drive the front slide and the rear slide to move toward and away from each other through the first motor and the tool feed screw, and the feed and retract components, tool holder and tool carried by the two tool feed slides can complete the synchronous turning of the long rod, which is beneficial to shorten the processing cycle and improve the processing efficiency.

[0019] 3. The device is reasonably designed, easy to connect with automatic feeding equipment, conducive to improving the degree of automation in the workshop, conducive to improving the machining efficiency, and can be used for long bar processing and treatment, suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A three-dimensional diagram of a rod surface oxide layer turning device provided in an embodiment;

[0022] Figure 2 A top view of a rod surface oxide layer turning device provided in an embodiment;

[0023] Figure 3 A front view of a rod surface oxide layer turning device provided in an embodiment;

[0024] Figure 4 It is a side view of the device for turning the oxide layer on the surface of the bar (without the support frame and the three-jaw support chuck);

[0025] Figure 5 A three-dimensional diagram of a device for turning the oxide layer on the surface of a bar (without a support frame and a three-jaw support chuck);

[0026] Figure 6 for Figure 5 A magnified schematic diagram of the structure in the middle;

[0027] Figure 7 for Figure 5 A magnified schematic diagram of structure B in the middle;

[0028] Figure 8 A side view of a variable diameter supporting material feeding component provided in an embodiment;

[0029] Fig. 9 A three-dimensional diagram of a variable diameter support material feeding component provided in an embodiment;

[0030] Fig.10 A cross-sectional view of a variable diameter support material feeding component provided in an embodiment in the GG direction;

[0031] Fig.11 A schematic diagram of clamping a variable diameter support material feeding component provided in an embodiment;

[0032] Fig.12 A working diagram of a variable diameter support material feeding component provided in an embodiment;

[0033] Fig.13 An axonometric view of a spindle assembly and a three-jaw clamping chuck provided for an embodiment;

[0034] Fig.14 A side view of a spindle assembly and a three-jaw clamping chuck provided for an embodiment;

[0035] In the above figures;

[0036] 1. Chassis; 2. Lathe body; 3. Tool slide; 31. Front slide; 32. Rear slide; 4. Tool advance and retreat components; 5. Tool holder; 6. Spindle components; 7. Three-jaw clamping chuck; 8. Three-jaw supporting chuck; 81. Chuck; 82. Radial opening; 83. Clamping claw; 84. Eccentric section; 9. Support frame; 10. Insertion pair; 101. Slot; 1011. C-shaped surface; 1012. Straight plane; 102. Insert plate; 1021. Column section; 1022. Flat section; 103. Press plate; 11. Tool feed screw; 12. First motor; 13. Discharge hole; 14. Variable diameter support material feeding component; 141. Variable diameter feeding opening; 142. Fixed pipe; 143. Oriented plate; 144, radial long hole; 145, clamping plate; 146, push rod; 147, lifting ring; 148, driving cylinder; 149, brake arm; 1410, lifting hinge mechanism; 14101, hinge seat; 14102, hinge shaft; 14103, lifting rod; 14104, buffer spring; 1411, traction mechanism; 14111, traction rod; 14112, lever plate; 14113, traction shaft hole; 14114, fixed hinge; 1412, brake guide hole; 1413, lifting guide rod; 1414, reset spring; 1415, roller; 15, self-cleaning component; 151, pipe interface; 152, hose; 16, long bar. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0039] Examples, such as Figure 1-Figure 14 As shown, the rod surface oxide layer turning device provided by the present invention comprises a machine case 1 and a lathe body 2, wherein the lathe body 2 is provided with a tool slide 3 that performs linear reciprocating motion along its length direction, a tool advance and retreat component 4 and a tool holder 5, and a tool holder 5 is installed on the tool holder 5. A spindle component 6 and a set of three-jaw clamping chucks 7 are provided on the machine case 1. On this basis, the lathe body 2 provided by the present invention is provided with a three-jaw support chuck 8 at the end away from the spindle component 6, and the three-jaw support chuck 8 is arranged on a support frame 9, and the support frame 9 is provided with a mounting port for installing the three-jaw support chuck 8 and for feeding. The tool advance and retreat component 4 and the tool holder 5 are distributed in pairs on the front and rear sides of the lathe body 2, and there are two tool slides 3, namely a front slide 31 and a rear slide 32, and a pair of plug-in pairs 10 are provided on the opposite surfaces of the front slide 31 and the rear slide 32, and a center of the pair of plug-in pairs 10 is provided. A feed screw 11 is provided with a first motor 12 at the power input end of the feed screw 11. The first motor 12 and the feed screw 11 are used to drive the front slide 31 and the rear slide 32 to move toward and away from each other. A discharge hole 13 is provided on the side of the chassis 1 opposite to the position of the spindle component 6. A variable diameter support feed component 14 is provided between the discharge hole 13 and the spindle component 6. The variable diameter support feed component 14 includes a variable diameter feed port 141 which is coaxial with the center of the discharge hole 13 and the center of the spindle component 6.

[0040] Specifically, the automatic loading equipment used in the workshop is an automatic feeder for long bars 16, which can deliver the long bars 16 to the support frame 9 and the three-jaw support chuck 8 by axial transmission. The three-jaw support chuck 8 can be used to support the tail end of the long bars 16, and the head end of the long bars 16 is clamped by the three-jaw clamping chuck 7. The rotation of the main shaft can drive the three-jaw clamping chuck 7 and the long bars 16 to rotate synchronously, and the three-jaw support chuck 8 remains in place to ensure the stability of the long bars 16 during the turning process. Furthermore, the chassis 1 adopts an axial through-type design. For the long bars 16 that have been turned, they can be ejected along the variable diameter support feeding component 14 during the process of the next long bar 16 being introduced, thereby enabling the device to be connected with the automatic loading equipment and the automatic discharging equipment, thereby improving the connection performance of the equipment in the workshop and the processing efficiency of the long bars 16.

[0041] The variable diameter support feeding component 14 provided by the present invention always keeps coaxial with the center of the main shaft component 6, which can ensure the coaxiality of the long bar 16 and the long bar 16 moving behind it, and provides a supporting surface that is adapted to the long bar 16 and has a longer length, which is conducive to improving the automatic feeding and unloading efficiency of the long bar 16. Furthermore, the present invention can drive the front slide 31 and the rear slide 32 to move toward each other and back to back through the first motor 12 and the feed screw 11. The tool on the front slide 31 is biased toward the far end of the main shaft component 6, and the tool on the rear slide 32 is biased toward the near end of the main shaft component 6. The feed and retract components 4, the tool holder 5 and the tool carried by the two feed slides 3 can complete the synchronous turning of the long bar 16 in the process of infinite approach, which is conducive to shortening the processing cycle and improving the processing efficiency. Therefore, the present invention is convenient for connecting automatic feeding equipment, is conducive to improving the degree of automation of the workshop, is conducive to improving the machining efficiency, and can be applied to the processing and treatment of the long bar 16, and its comprehensive utilization rate is high.

[0042] like Figure 4-Figure 7 As shown, a pair of guide rods are provided on both sides of the lathe body 2, and the inner sides of the front slide 31 and the rear slide 32 are slidably matched with the guide rods. The plug pair 10 includes a slot 101 and a plug plate 102. One end of the slot 101 is a blocked end and the other end is an open end. The plug plate 102 is plugged and matched with the slot 101, and the length of the plug plate 102 is less than the slot length of the slot 101. One end of the slot 101 and the center of the plug plate 102 are provided with a lead screw thread, and the lead screw thread is matched with the tool feed screw 11. The guide rod cooperates with the tool feed slide 3 to improve the linearity and stability of the tool feed slide 3. Regarding the plug-in pair 10, its plug plate 102 can be fixedly connected to the front slide 31, and the slot 101 is integrated with the rear slide 32. The feed screw 11 has threads with opposite spiral directions at both ends. A set of feed screws 11 and a first motor 12 are used to drive the plug-in pair 10 to produce corresponding actions, thereby making the front slide 31 and the rear slide 32 move towards and away from each other. In addition, when the tools carried by the two feed slides 3 are infinitely close, due to the staggered characteristics of the tools carried by the two and the final movement allowance provided by the slot 101 for the plug plate 102, the two sets of tools can fully complete the turning of the oxide layer of the long bar 16, thereby shortening the processing cycle of this work station.

[0043] In order to improve the plug-in stability of the two tool slides 3, the inner wall of the slot 101 provided by the present invention includes a C-shaped surface 1011 and straight planes 1012 extending horizontally from both sides of the C-shaped surface 1011, and the insert plate 102 includes a columnar section 1021 matched with the C-shaped surface 1011 and a flat section 1022 matched with the straight plane 1012. A pressure plate 103 is arranged above the insert plate 102, and the bottom surface of the pressure plate 103 is matched with the top surface of the slot 101 in an up-down manner. In this way, during the process of infinitely approaching and plugging the two tool slides 3, the slot 101 and the insert plate 102 can achieve a good fit, avoiding different degrees of shaking of the two sets of tools after infinitely approaching, and to a certain extent, the overall turning quality of the oxide layer on the surface of the long bar 16 can be guaranteed by this equipment.

[0044] like Figure 1 As shown, in order to improve the supporting performance of the three-jaw supporting chuck 8 on the long bar 16, the three-jaw supporting chuck 8 provided by the present invention includes a chuck 81, an adjusting mechanism is arranged inside the chuck 81, and the end face of the chuck 81 is provided with at least three evenly distributed radial openings 82, and the radial openings 82 are provided with claws 83 cooperating with the adjusting mechanism, and the claws 83 are provided with an eccentric section 84 at one end facing the center of the chuck, and the eccentric section 84 is used to eccentrically support the workpiece. The three claws 83 support the workpiece eccentrically, so that the adjacent claws form a pair of V-shaped supports, and there are 3 pairs of V-shaped supports in total. Compared with the design of radial direct clamping, the three-jaw supporting chuck 8 has a biased support function to ensure that the long bar 16 can complete effective and continuous rotation, and then complete the corresponding turning operation.

[0045] In order to prevent the debris generated by turning from adhering to the tool feed screw 11, the front slide 31 and the rear slide 32 provided by the present invention are both provided with a self-cleaning component 15, which is used to clean the tool feed screw 11. The self-cleaning component 15 includes a pipe interface 151 inclined toward the inside of the plug pair 10, and a hose 152 is provided at one end of the pipe interface 151, and the hose 152 is used to connect the self-cleaning medium supply end. The cleaning medium is provided to the hose 152 through the self-cleaning medium supply end, and finally the corresponding cleaning medium can be sprayed from the pipe interface 151 to the matching range of the tool feed screw 11, the plug plate, and the slot, thereby reducing the frequency of manual cleaning, thereby ensuring the real-time cleanliness of the transmission surface of the tool feed screw 11, and also ensuring the smoothness of the drive of the two tool feed slides 3 by the tool feed screw 11.

[0046] like Figure 8-Figure 12As shown, the variable diameter supporting material feeding component 14 provided by the present invention includes a fixed tube 142 docked with the end of the discharge hole 13 and the main shaft component 6, the inner wall of the fixed tube 142 is provided with three directional plates 143 distributed in a circular array and integrated with the fixed tube, the center of the directional plate 143 is provided with a radial long hole 144, the radial long hole 144 is provided with a clamping plate 145 that moves radially toward the center of the fixed tube 142, the clamping plate 145 is provided with at least two push rods 146 at one end facing away from the center of the fixed tube 142, a lifting ring 147 is provided on the outer side of the fixed tube 142, a driving cylinder 148 is provided on the top of the lifting ring 147, the internal hinge of the lifting ring 147 is provided with two symmetrically distributed brake arms 149, a lifting hinge mechanism 1410 connected to the two brake arms 149 is provided below the two brake arms 149, and a traction mechanism 1411 cooperating with the lifting ring 147 is provided at the bottom of the lifting hinge mechanism 1410.

[0047] Specifically, the position of the fixed tube 142 in the chassis 1 remains fixed, and the clamping opening generated by the radial movement of the clamping plate 145 on the fixed plate is the variable diameter feeding opening 141, which is used to match the long bars 16 of different diameters; the driving cylinder 148 is used to drive the lifting ring 147 to lift and lower, and the real-time interval between the lifting ring 147 and the fixed tube 142 changes while the lifting ring 147 is lifting and lowering, and its changing characteristics are symmetrical. Further, the descending action of the lifting ring 147 directly causes the corresponding push rod 146 directly below it to move toward the center of the fixed tube 142, and the two brake arms 149 can produce a plane motion under the linkage action of the lifting hinge mechanism 1410 and the traction mechanism 1411 while descending with the lifting ring 147, until the two brake arms 149 push the other two clamping plates 145 toward the center of the fixed tube 142, thereby realizing the coaxial support of the long bar 16, and obtaining a longer support span, effectively ensuring the continuity and stability of the long bar 16 from the completion of turning to the discharge.

[0048] In order to improve the linkage performance of the brake arm 149 to the clamping plate 145 matched with it, the brake arm 149 provided by the present invention includes a plurality of fold line segments connected in sequence, and the head end to the end end of the brake arm 149 is connected in a Z shape, and the end of the brake arm 149 is provided with a brake guide hole 1412, and the brake guide hole 1412 is slidably matched with the lifting hinge mechanism 1410, and the lifting hinge mechanism 1410 includes a hinge seat 14101, and the hinge seat 14101 is provided with a hinge shaft 14102 that can be movably matched with the two brake arms 149 at the same time, and a lifting rod 14103 is provided at the bottom of the hinge seat 14101, and a buffer spring 14104 is provided on the outside of the lifting rod 14103. Among them, when the lifting ring 147 is in the original position, the Z-shaped neck position of the brake arm 149 makes reasonable space for the push rod 146, so that the supporting diameter formed by the three clamping plates 145 is in a larger state; when the lifting ring 147 produces a descending movement, the traction mechanism 1411 will pull the lifting hinge mechanism 1410 to produce an ascending movement, and the lifting rod 14103 together with the hinge seat 14101 and the hinge shaft 14102 rise, and the relative position of the hinge shaft 14102 and the brake guide hole 1412 changes, thereby, the neck position of the brake arm 149 produces a planar movement, and the trend of the planar movement is: to move toward the position tangent to the tube surface of the fixed tube 142 until the clamping plate 145 is supported on the side of the long bar 16, thereby ensuring the linkage between the brake arm 149 and the clamping plate 145.

[0049] In order to improve the lifting and lowering linearity of the lifting hinge mechanism 1410, lifting guide rods 1413 are provided on both sides of the hinge seat 14101 provided by the present invention. The lifting guide rods 1413 cooperate with the through holes on the lifting ring 147. The lifting and lowering linearity of the lifting hinge is controlled by the lifting guide rods 1413 and the lifting ring 147, which is beneficial to ensure the uniformity of the relative position changes between the hinge shaft 14102 and the two brake arms 149, thereby ensuring the synchronization performance of the clamping plate 145 and the supporting performance for the long bar 16.

[0050] In order to improve the instantaneous action of the brake arm 149, the traction mechanism 1411 provided by the present invention includes two traction rods 14111 symmetrically connected to the lifting ring 147, a lever plate 14112 is arranged at the bottom of the traction rod 14111, a traction shaft 14113 slidingly matched with the traction rod 14111 is arranged on the lever plate 14112, a fixed hinge 14114 is arranged at the bottom of the lever plate 14112, the fixed hinge 14114 is connected to the chassis 1, the facing ends of the two lever plates 14112 are in upper and lower movable contact and the top of one of the lever plates 14112 is in movable contact with the lifting hinge mechanism 1410. Among them, the two traction rods 14111 are synchronized with the lifting and lowering actions of the lifting ring 147. The bottom of the traction rod 14111 can generate relative movement with the traction shaft 14113 through an axial connection. The lever plate 14112 is flipped around the hinge center of the fixed hinge 14114 under the traction action of one end thereof, thereby lifting the bottom of the lifting rod 14103, thereby realizing real-time restraint of the brake arm 149, ensuring the instantaneous action of the top clamping plate 145 and the two clamping plates 145 distributed in a V shape on both sides, thereby ensuring the automatic feeding and unloading performance of the equipment.

[0051] In order to ensure that the long bar 16 can be effectively fed into the variable diameter support feeding component 14, especially to prevent the top clamping plate 145 from blocking the transmission of the long bar 16, the radial long hole 144 provided by the present invention is a countersunk structure, and two rows of reset springs 1414 connected to the radial long hole 144 are arranged on both sides of the clamping plate 145. By setting the reset spring 1414, the clamping plate 145 can be restored to its original position after being separated from the braking action of the lifting ring 147 and the brake arm 149, so as to make sufficient feeding diameter for the long bar 16. Furthermore, the present invention also sets a plurality of rollers 1415 distributed along the length direction at the proximal end of the clamping plate 145, and the roller surface cooperates with the rod surface support of the long bar 16, so that the long bar 16 can maintain a stable and smooth axial transmission action in the variable diameter feeding port 141, which is conducive to improving the feeding and discharging performance of the device.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A bar surface oxide layer turning device, comprising a chassis and a lathe body, the lathe body is provided with a tool slide, a tool advance and retreat component and a tool holder that perform linear reciprocating motion along its length direction, the chassis is provided with a spindle component and a set of three-jaw clamping chucks, characterized in that: The lathe body is provided with a three-jaw supporting chuck at one end away from the main shaft component, and the three-jaw supporting chuck is arranged on a supporting frame, and the supporting frame is provided with a mounting opening for installing the three-jaw supporting chuck and for feeding. The feed and retract component and the tool holder are distributed in pairs on the front and rear sides of the lathe body, and there are two tool slides, namely a front slide and a rear slide, and a pair of plug-in pairs are arranged on the opposite surfaces of the front slide and the rear slide, and a tool screw is arranged at the center of the pair of plug-in pairs, and a first motor is arranged at the power input end of the tool screw, and the first motor and the tool screw are used to drive the front slide and the rear slide to move towards and away from each other, and the chassis is provided with a discharge hole on the side opposite to the position of the main shaft component, and a reducing diameter supporting material feeding component is arranged between the discharge hole and the main shaft component, and the reducing diameter supporting material feeding component includes a reducing diameter feeding opening which is coaxial with the center of the discharge hole and the center of the main shaft component.

2. The rod surface oxide layer turning device according to claim 1, characterized in that: A pair of guide rods are provided on both sides of the lathe body, and the inner sides of the front slide and the rear slide are slidably matched with the guide rods. The plug-in pair includes a slot and a plug plate, one end of the slot is a blocked end and the other end is an open end, the plug plate is plug-fitted with the slot and the length of the plug plate is less than the slot length of the slot, one end of the slot and the center of the plug plate are provided with a screw thread, and the screw thread is matched with the tool feed screw.

3. The rod surface oxide layer turning device according to claim 2, characterized in that: The inner wall of the slot includes a C-shaped surface and straight planes extending horizontally from both sides of the C-shaped surface. The plug plate includes a columnar section matching the C-shaped surface and a flat section matching the straight plane. A pressure plate is arranged above the plug plate, and the bottom surface of the pressure plate is matched with the top surface of the slot in an upper and lower manner.

4. The rod surface oxide layer turning device according to claim 3 is characterized in that: The three-jaw supporting chuck includes a chuck, an adjusting mechanism is arranged inside the chuck, the end face of the chuck is provided with at least three evenly distributed radial openings, the radial openings are provided with claws cooperating with the adjusting mechanism, and an eccentric section is provided at one end of the claw facing the center of the chuck, and the eccentric section is used to eccentrically support the workpiece.

5. The rod surface oxide layer turning device according to claim 1 or 4, characterized in that: The front slide and the rear slide are both provided with a self-cleaning component for cleaning the tool feed screw. The self-cleaning component includes a pipe interface inclined toward the interior of the plug-in pair. A hose is provided at one end of the pipe interface for connecting to a self-cleaning medium supply end.

6. The rod surface oxide layer turning device according to claim 1, characterized in that: The variable diameter supporting feeding component includes a fixed tube connected with the discharge hole and the end of the main shaft component, the inner wall of the fixed tube is provided with three directional plates distributed in a circular array, the center of the directional plate is provided with a radial long hole, the radial long hole is provided with a clamping plate that moves radially toward the center of the fixed tube, the clamping plate is provided with at least two push rods at the end facing away from the center of the fixed tube, the outer side of the fixed tube is provided with a lifting ring, the top of the lifting ring is provided with a driving cylinder, the internal hinge of the lifting ring is provided with two symmetrically distributed brake arms, a lifting hinge mechanism connected to the two brake arms is provided below the two brake arms, and a traction mechanism cooperating with the lifting ring is provided at the bottom of the lifting hinge mechanism.

7. The rod surface oxide layer turning device according to claim 6, characterized in that: The brake arm includes a plurality of fold line segments connected in sequence, and the connection from the head end to the tail end of the brake arm is Z-shaped. A brake guide hole is provided at the tail end of the brake arm, and the brake guide hole is slidably matched with a lifting hinge mechanism. The lifting hinge mechanism includes a hinge seat, and the hinge seat is provided with a hinge shaft that can movably cooperate with the two brake arms at the same time. A lifting rod is provided at the bottom of the hinge seat, and a buffer spring is provided on the outer side of the lifting rod.

8. The rod surface oxide layer turning device according to claim 6, characterized in that: Lifting guide rods are arranged on both sides of the hinge seat, and the lifting guide rods are matched with through holes on the lifting ring.

9. The rod surface oxide layer turning device according to claim 6, 7 or 8, characterized in that: The traction mechanism includes two traction rods symmetrically connected to the lifting ring, a lever plate is provided at the bottom of the traction rod, a traction shaft hole slidingly matched with the traction rod is provided on the lever plate, a fixed hinge is provided at the bottom of the lever plate, and the fixed hinge is connected to the chassis, the facing ends of the two lever plates are in up and down movable contact and the top of one of the lever plates is in movable contact with the lifting hinge mechanism.

10. The rod surface oxide layer turning device according to claim 6, characterized in that: The radial long hole is a countersunk structure, and two rows of return springs connected to the radial long hole are arranged on both sides of the clamping plate.

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