Universal screw rod thread polishing machine and polishing method

Abstract

The invention provides a universal lead screw thread polishing machine and a polishing method. The universal lead screw thread polishing machine comprises a bracket, a polishing wheel located on one side of the bracket, a guide wheel located on the other side of the bracket, a first driving mechanism driving the polishing wheel to rotate, a second driving mechanism driving the guide wheel to rotate, a first rotation adjusting mechanism, a second rotation adjusting mechanism and a bracket adjusting mechanism. The polishing wheel is arranged on the first rotation adjusting mechanism, the guide wheel is arranged on the second rotation adjusting mechanism, and the bracket is arranged on the bracket adjusting mechanism. The first rotation adjusting mechanism drives the polishing wheel to rotate and adjust so that the polishing wheel can incline to the angle needed by the lead angle of the lead screw, and the second rotation adjusting mechanism drives the guide wheel to rotate and adjust so that the guide wheel can incline by the needed angle. And the bracket is driven by the bracket adjusting mechanism to adjust the position. The multi-head screw rod automatic feeding and polishing device has the advantages that the automatic feeding and polishing requirements of multi-head screw rod products with various different lead angles can be well met, and the polishing effect can be guaranteed.

Description

[Technical field]

[0001] The invention relates to the technical field of screw rod production equipment, and in particular to a universal screw rod thread polishing machine and a polishing method. [Background technology]

[0002] Polishing is an essential process in the production of screw rods. The traditional method is for workers to hold the screw rod and polish it with a polishing machine. However, this method usually requires 4-5 repeated polishing to achieve the desired effect. It is not only time-consuming and labor-intensive, but also harmful to the health of operators due to the dusty environment. The nut surface is unevenly polished and the efficiency is very low.

[0003] Of course, there are also devices in the prior art that can perform one-time polishing on the surface of a rod-shaped object, such as a rod-shaped object outer surface polishing device disclosed in the Chinese utility model patent application number CN202121434614.2, which is mainly used for polishing and rust removal of rod / tubular workpieces and the outer cylindrical surface and thread teeth of studs with a helical lead angle of less than 3 degrees. However, the existing polishing device has the following defects in actual use: 1. The screws of different products have different sizes and helical lead angles, and the position of the existing polishing wheel is usually not adjustable. During use, for the screw thread with a helical lead angle greater than 3 degrees, it is difficult to ensure that the tooth profile of the polishing wheel and the tooth profile of the screw are fully and effectively contacted and polished, and it is also impossible to meet the polishing requirements of multiple screw products with different helical lead angles; 2. The polishing wheel will inevitably wear during the polishing process, and the existing polishing device cannot compensate for the wear of the polishing wheel, which will affect the polishing effect; 3. The concentricity of the polishing wheel cannot be guaranteed, and vibration and swinging are prone to occur during the polishing process. [Summary of the invention]

[0004] In view of the technical problems existing in the existing polishing devices, the purpose of the present invention is to provide a universal screw thread polishing machine and a polishing method, which can well meet the automatic feeding and polishing requirements of multi-head screw products with various helix angles and can ensure the polishing effect.

[0005] The present invention is achieved in that:

[0006] In the first aspect, a universal screw thread polishing machine includes a bracket, a polishing wheel located on one side of the bracket, a guide wheel located on the other side of the bracket, a first driving mechanism for driving the polishing wheel to rotate, a second driving mechanism for driving the guide wheel to rotate, a first rotation adjustment mechanism, a second rotation adjustment mechanism and a bracket adjustment mechanism; the polishing wheel is rotatably arranged on the first rotation adjustment mechanism through a first axis, the guide wheel is rotatably arranged on the second rotation adjustment mechanism through a second axis, and the bracket is arranged on the bracket adjustment mechanism; the polishing wheel is driven by the first rotation adjustment mechanism to rotate and adjust so that the polishing wheel is tilted to the angle required by the screw helix angle, and the guide wheel is driven by the second rotation adjustment mechanism to rotate and adjust so that the guide wheel is tilted to the required angle, and the inclination directions of the polishing wheel and the guide wheel are opposite, and the rotation speed of the guide wheel is less than the rotation speed of the polishing wheel; the bracket is driven by the bracket adjustment mechanism to adjust its position.

[0007] Furthermore, the first rotation adjustment mechanism is provided with a spindle seat on the side facing the bracket, the first shaft body is rotatably provided on the spindle seat, and an axial adjustment component is provided between the spindle seat and the first rotation adjustment mechanism; the axial adjustment component drives the polishing wheel on the first shaft body to adjust its position along the axial direction of the first shaft body, so that half of the total thickness of the polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism, or half of the total thickness of each closely arranged polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism.

[0008] Furthermore, it also includes a compensation adjustment mechanism for driving the polishing wheel to compensate for loss; the bottom of the first rotation adjustment mechanism is equipped with a fixed base and an upper slide seat, and the upper slide seat is connected to the top of the fixed base by sliding assembly;

[0009] The compensation adjustment mechanism includes a compensation adjustment cylinder, a compensation limit nut, a compensation adjustment screw, a limit fixing seat and a compensation nut seat; the lower end of the limit fixing seat is fixedly connected to the side of the fixed base away from the bracket, and the upper end of the limit fixing seat is penetrated by an adjustment screw through hole, the size of the adjustment screw through hole is smaller than the size of the compensation limit nut; the compensation nut seat is arranged on the upper slide seat, the compensation adjustment screw passes through the adjustment screw through hole and is threadedly connected to the compensation nut seat, the compensation limit nut can be screwed on the compensation adjustment screw to adjust the tightness, and the compensation limit nut is located on the outside of the limit fixing seat; the movable end of the compensation adjustment cylinder is connected to the upper slide seat.

[0010] Furthermore, it also includes a trimming mechanism disposed above the polishing wheel;

[0011] The dressing mechanism includes a movable rack rod, a dressing pen, an upper and lower sliding seat for the dressing pen and a gear transmission shaft; a rack rod assembly cylinder is formed on the spindle seat along the axial direction of the first shaft body, the movable rack rod is movably inserted in the rack rod assembly cylinder, and a rack rod transmission tooth is formed on the bottom of the movable rack rod along the length direction; one end of the gear transmission shaft is inserted into the rack rod assembly cylinder and is provided with a driving gear meshing with the rack rod transmission teeth, and the other end of the gear transmission shaft extends to the outside of the spindle seat; one end of the movable rack rod extends to the outside of the spindle seat, and the upper and lower sliding seat of the dressing pen can be adjusted up and down and connected to the protruding end of the movable rack rod, and the dressing pen is detachably connected to the bottom of the upper and lower sliding seat of the dressing pen.

[0012] Furthermore, the bracket includes a screw polishing support plate located between the polishing wheel and the guide wheel and V-shaped support plates located at both ends of the screw polishing support plate along the length direction of the screw polishing support plate; the center line of the two V-shaped support plates along the length direction coincides with the center line of the screw polishing support plate along the length direction;

[0013] The bracket adjustment mechanism includes a first horizontal adjustment component that drives the screw polishing support plate close to or away from the polishing wheel in the horizontal direction, a second horizontal adjustment component that drives the V-shaped support plate close to or away from the polishing wheel in the horizontal direction, a first lifting adjustment component that drives the screw polishing support plate to rise and fall, and a second lifting adjustment component that drives the V-shaped support plate to rise and fall; the first horizontal adjustment component is connected to the first lifting adjustment component, and the screw polishing support plate is connected to the first horizontal adjustment component or the first lifting adjustment component; the second horizontal adjustment component is connected to the second lifting adjustment component, and the V-shaped support plate is connected to the second horizontal adjustment component or the second lifting adjustment component.

[0014] Furthermore, the first rotation adjustment mechanism includes a hoop and a rotation adjustment shaft; the hoop is clamped on the outside of the rotation adjustment shaft, one end of the rotation adjustment shaft is provided with a first support plate for supporting the polishing wheel, and the other end of the rotation adjustment shaft is provided with a second support plate for supporting the first driving mechanism;

[0015] The second rotation adjustment mechanism includes a fixed support and an adjustment support; the fixed support is provided with a plurality of arc-shaped rotation adjustment grooves spaced around a circumferential direction, and the adjustment support is locked and connected to the fixed support via a plurality of first locking members; the guide wheel and the second driving mechanism are both mounted on the adjustment support.

[0016] In a second aspect, a polishing method of a universal screw thread polishing machine is provided, the polishing method comprising the following steps:

[0017] According to the screws with different helical angles to be polished, the position of the bracket is adjusted by the bracket adjustment mechanism, so that the screw placed on the bracket is between the polishing wheel and the guide wheel and at the required height position; the polishing wheel is driven to rotate and adjust by the first rotation adjustment mechanism, so that the polishing wheel is tilted to the angle required by the screw helical angle and effectively contacts the tooth profile of the screw; the guide wheel is driven to rotate and adjust by the second rotation adjustment mechanism, so that the guide wheel is tilted to the required angle and contacts the screw transmission; wherein the inclination directions of the polishing wheel and the guide wheel are opposite;

[0018] The screw rod to be polished is placed on the bracket, and the polishing wheel is driven to rotate by the first driving mechanism so as to polish the screw rod with the polishing wheel; at the same time, the guide wheel is driven to rotate by the second driving mechanism so as to drive the screw rod to move forward; wherein, the rotation speed of the polishing wheel is greater than the rotation speed of the guide wheel.

[0019] Furthermore, after the polishing wheel is driven to perform rotation adjustment by the first rotation adjustment mechanism, the method further includes:

[0020] The number and thickness of the polishing wheels are set according to the lead size of the screw rod; when only one polishing wheel is provided, the position of the polishing wheel along the axial direction is adjusted so that the position of half of the total thickness of the polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism;

[0021] When there are at least two polishing wheels closely arranged, the position of each polishing wheel along the axial direction is adjusted so that the position of half of the total thickness of each polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism.

[0022] Furthermore, the method further comprises: before polishing the screw rod, manually adjusting the horizontal movement of the polishing wheel using a compensation adjustment mechanism to compensate for the loss of the polishing wheel;

[0023] Alternatively, during the polishing process of the lead screw, a compensation adjustment mechanism is used to automatically perform dynamic movement adjustment on the polishing wheel to compensate for the loss of the polishing wheel in real time.

[0024] Furthermore, the method also includes: before polishing the screw rod, according to the different screw rods to be polished, using a dressing mechanism to dress the polishing wheel to ensure the concentricity of the polishing wheel.

[0025] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved:

[0026] 1. By equipping the polishing wheel with a first rotation adjustment mechanism, equipping the guide wheel with a second rotation adjustment mechanism, and equipping the bracket with a bracket adjustment mechanism, in the specific production process, according to the different sizes and helical lead angles of the screw rod, the first rotation adjustment mechanism can be used to adjust the polishing wheel to be consistent with the helical lead angle of the screw rod, ensuring that the tooth profile of the polishing wheel can be adapted to the tooth profile of various screw rods, and the second rotation adjustment mechanism is used to adjust the guide wheel to a desired angle, and the bracket adjustment mechanism is used to adjust the position of the bracket; therefore, it not only satisfies the automatic feeding and polishing needs of multi-head screw rod products with different helical lead angles, but also can well meet the automatic feeding and polishing needs of multi-head screw rod products with different helical lead angles, especially can well meet the automatic feeding and polishing needs of multi-head screw rod products with different helical lead angles, especially can well meet the automatic feeding and polishing needs of multi-head screw rod products with different helical lead angles, It is suitable for polishing screws with a helix angle greater than 3 degrees and deep threads (including various trapezoidal screws with deep tooth profiles, rolled screws with large lead and large helix angles on the market, etc.), without the need to purchase different polishing machines for different screw products, which can reduce costs; and using a guide wheel with a lower speed to limit the movement speed of the screw, and using a polishing wheel with a higher speed to polish the screw, can ensure that the polishing wheel can fully and effectively polish the screw, thereby ensuring the polishing effect; at the same time, the guide wheel is used to drive the screw to automatically move forward at a uniform speed, without the need for manual hand-held polishing of the screw, which can effectively improve production efficiency, realize large-scale production, and further ensure the polishing effect.

[0027] 2. By setting an axial adjustment component between the main shaft seat and the first rotation adjustment mechanism, during specific use, the axial adjustment component can be used to drive the polishing wheel on the first shaft body to adjust its position along the axial direction of the first shaft body, and align half of the total thickness of a single polishing wheel along the axial direction with the rotation center of the first rotation adjustment mechanism, or align half of the total thickness of each closely arranged polishing wheel along the axial direction with the rotation center of the first rotation adjustment mechanism. In this way, it can be ensured that during the polishing process, the tooth profile of the polishing wheel can be fully and effectively contacted and polished with the tooth profile of the screw rod, thereby ensuring that the tooth profile of the polishing wheel can effectively participate in polishing and ensure the polishing effect.

[0028] 3. By adopting the structural design of the compensation adjustment mechanism of the present invention, during the specific use, on the one hand, the upper slide can be driven to slide and adjust by manually rotating the compensation adjustment screw, and then the upper slide drives the polishing wheel to adjust the distance between the polishing wheel and the guide wheel, and then the bracket adjustment mechanism is used to adjust the bracket, so as to ensure that the entire polishing machine can well adapt to the polishing of various screws of different sizes; on the second hand, since the polishing wheel will wear during the polishing process, the upper slide can be driven to slide and feed by manually rotating the compensation adjustment screw, so as to achieve manual compensation of the polishing wheel, that is, manually adjust the distance deviation between the compensation polishing wheel and the guide wheel caused by the wear of the polishing wheel to ensure the polishing effect; on the third hand, the compensation limit nut can be rotated and adjusted to the desired position in the direction away from the limit fixing seat, and the compensation adjustment cylinder can be used to apply pressure to the upper slide during the polishing process, so as to achieve dynamic compensation for the distance deviation between the polishing wheel and the guide wheel caused by the wear of the polishing wheel, so as to ensure the polishing effect. At the same time, the compensation limit nut can play a role in limiting the range of compensation activities in the dynamic compensation scenario.

[0029] 4. By arranging a dressing mechanism above the polishing wheel, the dressing mechanism can be used to perform dressing operations on the polishing wheel during specific use. On the one hand, the concentricity of the polishing wheel can be guaranteed, ensuring that the polishing wheel will not vibrate or swing during operation, thereby ensuring the polishing effect; on the other hand, when it is necessary to switch to polishing screw products with different pitches, the dressing mechanism can be directly used to dress the polishing wheel, so that the polishing wheel can adapt to the polishing of different screw products without replacing the polishing wheel.

[0030] 5. The bracket is designed to include a screw polishing support plate between the polishing wheel and the guide wheel and a V-shaped support plate at both ends of the screw polishing support plate, so that during use, the screw polishing support plate can be used to meet the support requirements for the screw, and the screw polishing support plate can be prevented from affecting the work of the polishing wheel and the guide wheel. The V-shaped support plate can also be used to support the screw during input and output, so as to reduce manual intervention and help improve production efficiency. At the same time, the screw polishing support plate is equipped with a first horizontal adjustment component and a first lifting adjustment component, and the V-shaped support plate is equipped with a second horizontal adjustment component and a second lifting adjustment component, so that the position adjustment of the screw polishing support plate and the V-shaped support plate can be well achieved during specific use. On the one hand, it can be well adapted to screws of various sizes; on the other hand, the screw polishing support plate and the V-shaped support plate can be moved below the axis of the screw, and the center line of the screw polishing support plate and the V-shaped support plate along the length direction is directly opposite to the axis of the screw, thereby ensuring that the polishing wheel can accurately polish the screw.

Brief Description of the Drawings

[0031] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0032] Figure 1 This is one of the three-dimensional structural diagrams of a universal screw thread polishing machine of the present invention;

[0033] Figure 2 This is the second three-dimensional structural diagram of a universal screw thread polishing machine of the present invention;

[0034] Figure 3 It is an overall assembly diagram of the polishing wheel, the first rotation adjustment mechanism, the compensation adjustment mechanism and the finishing mechanism in the present invention;

[0035] Figure 4 It is an assembly diagram of the first rotation adjustment mechanism and the compensation adjustment mechanism in the present invention;

[0036] Figure 5 It is a structural diagram of the trimming mechanism in the present invention;

[0037] Figure 6 It is one of the assembly drawings of the polishing wheel, the second rotation adjustment mechanism, the bracket and the bracket adjustment mechanism in the present invention;

[0038] Figure 7 This is the second assembly drawing of the polishing wheel, the second rotation adjustment mechanism, the bracket and the bracket adjustment mechanism in the present invention.

[0039] Description of reference numerals:

[0040] Universal screw thread polishing machine 100;

[0041] Bracket 1, screw polishing support plate 11, V-shaped support plate 12;

[0042] Polishing wheel 2, first shaft 21;

[0043] Guide wheel 3, second shaft body 31;

[0044] A first driving mechanism 41, a first driving motor 411, a driving belt 412, a second driving mechanism 42, a second driving motor 421, and a driving chain 422;

[0045] The first rotation adjustment mechanism 5, the main shaft seat 51, the rack rod assembly cylinder 511, the axial adjustment assembly 52, the second locking member 521, the fixed base 53, the upper slide seat 54, the first jacking bolt 541, the hoop member 55, the rotation adjustment shaft 56, the first support plate 561, and the second support plate 562;

[0046] The second rotation adjustment mechanism 6, the fixed support 61, the arc-shaped rotation adjustment slot 611, the adjustment support 62, and the first locking member 63;

[0047] Bracket adjustment mechanism 7, first horizontal adjustment component 71, second horizontal adjustment component 72, first lifting adjustment component 73, second lifting adjustment component 74, third locking member 751, and long round hole 752;

[0048] Compensation adjustment mechanism 8, compensation adjustment cylinder 81, compensation limit nut 82, compensation adjustment screw 83, hand wheel 831, limit fixing seat 84, adjustment screw through hole 841, compensation nut seat 85;

[0049] The trimming mechanism 9 includes a movable rack rod 91 , a rack rod transmission tooth 911 , a trimming pen upper and lower slide seats 92 , and a gear transmission shaft 93 . [Specific implementation method]

[0050] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0051] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0052] Embodiment 1

[0053] See also Figures 1 to 7As shown, the present invention is a universal screw thread polishing machine 100, which includes a bracket 1, a polishing wheel 2 located on one side of the bracket 1, a guide wheel 3 located on the other side of the bracket 1, a first driving mechanism 41 for driving the polishing wheel 2 to rotate, a second driving mechanism 42 for driving the guide wheel 3 to rotate, a first rotation adjustment mechanism 5, a second rotation adjustment mechanism 6 and a bracket adjustment mechanism 7; wherein the bracket 1 is used to support the screw to be polished; the polishing wheel 2 is used to realize the polishing of the screw; the guide wheel 3 is used to drive the screw to move forward, and the guide wheel 3 can also limit the screw; the first rotation adjustment mechanism 5 is used to drive the polishing wheel 2 to rotate and adjust, so that the tooth profile of the polishing wheel 2 can be adapted to the tooth profile of various screws; the second rotation adjustment mechanism 6 is used to drive the guide wheel 3 to rotate and adjust, so that the guide wheel 3 can be in contact with the screw transmission and drive the screw to move forward at a uniform speed; the bracket adjustment mechanism 7 is used to adjust the position of the bracket 1 so that the polishing wheel 2 can accurately polish the screw.

[0054] The polishing wheel 2 is rotatably arranged on the first rotation adjustment mechanism 5 through a first shaft 21, the guide wheel 3 is rotatably arranged on the second rotation adjustment mechanism 6 through a second shaft 31, and the bracket 1 is arranged on the bracket adjustment mechanism 7; the polishing wheel 2 is driven by the first rotation adjustment mechanism 5 to be rotated and adjusted so that the polishing wheel 2 is tilted to the angle required by the helical lead angle of the screw, that is, the polishing wheel 2 is adjusted to be consistent with the helical lead angle of the screw through the first rotation adjustment mechanism 5 to ensure that the tooth profile of the polishing wheel 2 can match the tooth profile of the screw so as to better achieve; the guide wheel 3 is driven by the second rotation adjustment mechanism 6 to be rotated and adjusted so that the guide wheel 3 is tilted to the required angle to ensure that the guide wheel 3 can be in transmission contact with the screw. On the one hand, the guide wheel 3 can be used to support the screw, and on the other hand The guide wheel 3 can be used to drive the screw to move forward at a constant speed; the inclination directions of the polishing wheel 2 and the guide wheel 3 are opposite, that is, if the polishing wheel 2 is in a positive tilt state, the guide wheel 3 is in a negative tilt state, and the rotation speed of the guide wheel 3 is less than the rotation speed of the polishing wheel 2, so that the guide wheel 3 can be used to limit the movement speed of the screw during operation to avoid the screw speed being too fast, which causes the polishing wheel 2 to be unable to fully and effectively polish the screw, and at the same time ensure that the screw can move in one direction under the joint action of the polishing wheel 2 and the guide wheel 3; the bracket 1 is driven by the bracket adjustment mechanism 7 to adjust the position, so that the bracket 1 can be moved below the axis of the screw to support the screw, and the bracket 1 is aligned with the axis of the screw along the center line of the length direction to ensure that the polishing wheel 2 can accurately polish the screw.

[0055] The present invention equips the polishing wheel 2 with a first rotation adjustment mechanism 5, equips the guide wheel 3 with a second rotation adjustment mechanism 6, and equips the bracket 1 with a bracket adjustment mechanism 7, so that in the specific production process, according to the different sizes and spiral lead angles of the screw, the first rotation adjustment mechanism 5 can be used to rotate and adjust the polishing wheel 2 to be consistent with the spiral lead angle of the screw, ensuring that the tooth profile of the polishing wheel 2 can be adapted to the tooth profile of various screws, and the second rotation adjustment mechanism 6 is used to rotate and adjust the guide wheel 3 to a desired angle, and the bracket adjustment mechanism 7 is used to adjust the position of the bracket 1; therefore, not only the automatic feeding and polishing requirements of multi-head screw products with different spiral lead angles are well met, but also the automatic feeding and polishing requirements of multi-head screw products with different spiral lead angles are also well met. It is well suited for polishing screws with a helix angle greater than 3 degrees and deep threads (including various trapezoidal screws with deep thread profiles, rolled screws with large lead and large helix angles, etc. on the market), without the need to purchase different polishing machines for different screw products, thereby reducing costs; and a guide wheel 3 with a relatively low rotation speed is used to limit the movement speed of the screw, while a polishing wheel 2 with a relatively high rotation speed is used to polish the screw, thereby ensuring that the polishing wheel 2 can fully and effectively polish the screw and ensure the polishing effect; at the same time, the guide wheel 3 is used to drive the screw to automatically move forward at a uniform speed, without the need for manual hand-held polishing of the screw, thereby effectively improving production efficiency, realizing large-scale production, and further ensuring the polishing effect.

[0056] In some embodiments of the present invention, the first rotation adjustment mechanism 5 is provided with a spindle seat 51 on the side facing the bracket 1, the first shaft body 21 is rotatably provided on the spindle seat 51, and an axial adjustment component 52 is provided between the spindle seat 51 and the first rotation adjustment mechanism 5; the polishing wheel 2 on the first shaft body 21 is driven by the axial adjustment component 52 to adjust its position along the axial direction of the first shaft body 21, so that the half position of the total thickness of the polishing wheel 2 along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism 5, that is, the rotation center of the first rotation adjustment mechanism 5 is aligned with the bisector of the total thickness of the polishing wheel 2 along the axial direction, or the half position of the total thickness of each polishing wheel 2 arranged closely along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism 5, that is, the rotation center of the first rotation adjustment mechanism 5 is aligned with the bisector of the total thickness of each polishing wheel 2 arranged closely along the axial direction. For example, when three polishing wheels 2 of the same size are closely arranged on the first shaft body 21, it is necessary to align the rotation center of the first rotation adjustment mechanism 5 with the bisector of the total thickness of the middle polishing wheel 2 along the axial direction.

[0057] The present invention sets an axial adjustment component 52 between the main shaft seat 51 and the first rotation adjustment mechanism 5, so that during specific use, the axial adjustment component 52 can be used to drive the polishing wheel 2 on the first shaft body 21 to adjust its position along the axial direction of the first shaft body 21, and align half of the total thickness of a single polishing wheel 2 along the axial direction with the rotation center of the first rotation adjustment mechanism 5, or align half of the total thickness of each closely arranged polishing wheel 2 along the axial direction with the rotation center of the first rotation adjustment mechanism 5, so as to ensure that during the polishing process, the tooth profile of the polishing wheel 2 can be fully and effectively contacted and polished with the tooth profile of the screw, thereby ensuring that the tooth profile of the polishing wheel 2 can effectively participate in polishing and ensure the polishing effect.

[0058] As a specific embodiment of the present invention, the axial adjustment assembly 52 may include a second locking member 521 and an axial adjustment groove or an axial adjustment hole (not shown), the first rotation adjustment mechanism 5 is provided with an axial adjustment groove or a plurality of axial adjustment holes along the axial direction of the first shaft body 21, and the spindle seat 51 is locked with the first rotation adjustment mechanism 5 through a plurality of second locking members 521, wherein the second locking member 521 may include a bolt and a nut. In the specific use of the present invention, when the polishing wheel 2 needs to be adjusted, the adjustment operation can be performed by simply loosening the second locking member 521, and after the adjustment is completed, the spindle seat 51 and the first rotation adjustment mechanism 5 can be locked together again by simply using the second locking member 521.

[0059] In some embodiments of the present invention, please refer to Figure 4 As shown, the universal screw thread polishing machine 100 also includes a compensation adjustment mechanism 8 for driving the polishing wheel 2 to compensate for loss; the bottom of the first rotation adjustment mechanism 5 is provided with a fixed base 53 and an upper slide 54, and the upper slide 54 is slidably assembled and connected with the top of the fixed base 53, so that the upper slide 54 can drive the first rotation adjustment mechanism 5, the first shaft 21, the polishing wheel 2 and the first driving mechanism 41 to slide and adjust as a whole; at the same time, when the present invention is implemented, the upper slide 54 can also be provided with a first tightening bolt 541, when the upper slide 54 is slidably adjusted to the desired position, the first tightening bolt 541 can be operated to tighten the fixed base 53, so that the upper slide 54 cannot slide automatically without human intervention; as a specific embodiment of the present invention, the upper slide 54 and the top of the fixed base 53 are slidably assembled and connected using a dovetail groove structure to ensure the smoothness of sliding;

[0060] The compensation adjustment mechanism 8 includes a compensation adjustment cylinder 81, a compensation limit nut 82, a compensation adjustment screw 83, a limit fixing seat 84 and a compensation nut seat 85; the lower end of the limit fixing seat 84 is fixedly connected to the side of the fixed base 53 away from the bracket 1, and the upper end of the limit fixing seat 84 is penetrated by an adjustment screw through hole 841, the size of the adjustment screw through hole 841 is smaller than the size of the compensation limit nut 82, so that the compensation limit nut 82 cannot pass through the adjustment screw through hole 841; the compensation nut seat 85 is arranged on the upper slide 54, the compensation adjustment screw 83 passes through the adjustment screw through hole 841 and is threadedly connected to the compensation nut seat 85, the compensation limit nut 82 is screwed on the compensation adjustment screw 83 in a loose and tight manner, and the compensation limit nut 82 is located on the outside of the limit fixing seat 84; the movable end of the compensation adjustment cylinder 81 is connected to the upper slide 54. In a specific implementation of the present invention, a gap (not shown) can be opened on the side wall of the compensation limit nut 82, and a locking bolt (not shown) can be provided for the compensation limit nut 82. During use, when it is necessary to adjust the position of the compensation limit nut 82, the locking bolt can be loosened to enlarge the gap, thereby facilitating the rotation of the compensation limit nut 82 for adjustment; and when the compensation limit nut 82 is adjusted to the desired position, the locking bolt needs to be tightened to reduce the gap, so that the compensation limit nut 82 will hold the compensation adjustment screw 83 tightly; at the same time, a handwheel 831 is provided at the end of the compensation adjustment screw 83 away from the compensation nut seat 85, so as to facilitate the operation of the handwheel 831 to rotate the compensation adjustment screw 83. In the specific process of the compensation adjustment mechanism 8 of the present invention, when manual adjustment compensation is required, it is only necessary to make the compensation limit nut 82 abut against the outer side of the limit fixing seat 84, and then the compensation adjustment screw 83 can be manually rotated to drive the compensation nut seat 85 and the upper slide seat 54 to slide and realize feed compensation; and when the compensation adjustment cylinder 81 is needed to perform dynamic feed compensation, it is necessary to move the compensation limit nut 82 away from the limit fixing seat 84 by a certain distance, and then the compensation adjustment cylinder 81 can be used to drive the upper slide seat 54 to perform dynamic feed compensation.

[0061] By adopting the structural design of the above-mentioned compensation adjustment mechanism 8 of the present invention, during the specific use, on the one hand, the upper slide 54 can be driven to slide and adjust by manually rotating the compensation adjustment screw 83, and then the upper slide 54 drives the polishing wheel 2 to adjust the distance between the polishing wheel 2 and the guide wheel 3, and then cooperates with the bracket adjustment mechanism 7 to adjust the bracket 1, so as to ensure that the entire polishing machine can well adapt to the polishing of screws of various sizes; on the other hand, because the polishing wheel 2 will wear during the polishing process, the upper slide 54 can be driven to slide and feed by manually rotating the compensation adjustment screw 83, so as to achieve the polishing of the polishing wheel 2. Manual compensation of the polishing wheel 2 is achieved, that is, manual adjustment is made to compensate for the distance deviation between the polishing wheel 2 and the guide wheel 3 caused by the wear of the polishing wheel 2 to ensure the polishing effect; thirdly, the compensation limit nut 82 can be rotated and adjusted to the desired position in the direction away from the limit fixing seat 84, and the compensation adjustment cylinder 81 is used to apply pressure to the upper slide seat 54 during the polishing process, so as to dynamically compensate for the distance deviation between the polishing wheel 2 and the guide wheel 3 caused by the wear of the polishing wheel 2 to ensure the polishing effect. At the same time, in the dynamic compensation scenario, the compensation limit nut 82 can play a role in limiting the compensation activity range.

[0062] In some embodiments of the present invention, please refer to Figure 5 As shown, the universal screw thread polishing machine 100 further includes a trimming mechanism 9 disposed above the polishing wheel 2;

[0063] The trimming mechanism 9 includes a movable rack rod 91, a trimming pen (not shown), a trimming pen upper and lower slide seat 92 and a gear transmission shaft 93; a rack rod assembly cylinder 511 is formed on the spindle seat 51 along the axial direction of the first shaft body 21, and the movable rack rod 91 is movably inserted in the rack rod assembly cylinder 511, and a rack rod transmission tooth 911 is formed at the bottom of the movable rack rod 91 along the length direction; one end of the gear transmission shaft 93 is inserted into the rack rod assembly cylinder 511 and is provided with a gear that is aligned with the rack rod transmission tooth 911 A meshing driving gear (not shown) is formed in the rack rod assembly tube 511 with a space for accommodating the driving gear. The other end of the gear transmission shaft 93 extends to the outside of the main shaft seat 51. During operation, the movable rack rod 91 can be driven to move by rotating the gear transmission shaft 93; one end of the movable rack rod 91 extends to the outside of the main shaft seat 51, and the upper and lower sliding seats 92 of the dressing pen are connected to the protruding ends of the movable rack rod 91 in an adjustable manner up and down, and the dressing pen is detachably connected to the bottom of the upper and lower sliding seats 92 of the dressing pen. As a specific embodiment of the present invention, the dressing pen and the bottom of the dressing pen upper and lower slide seat 92 can be detachably connected by bolts, so as to facilitate the disassembly and replacement of the dressing pen according to actual needs; the dressing pen upper and lower slide seat 92 and the protruding end of the movable rack rod 91 adopt a dovetail groove structure to achieve an up and down sliding connection, and a second tightening bolt (not shown) is provided on the dressing pen upper and lower slide seat 92. When the dressing pen is driven to adjust to the desired position by using the dressing pen upper and lower slide seat 92, the second tightening bolt can be rotated to tighten the movable rack rod 91 to ensure that the dressing pen does not move up and down during the dressing process. When the dressing mechanism 9 of the present invention is used in practice, it is necessary to first rotate the gear transmission shaft 93 to drive the movable rack rod 91 to move, so that the dressing pen moves to the top of one end of the polishing wheel 2; then operate the second tightening bolt to loosen the movable rack rod 91, and drive the dressing pen to move downward through the upper and lower sliding seats 92 of the dressing pen, so that the dressing pen contacts the polishing wheel 2, and operate the second tightening bolt to tighten the movable rack rod 91; finally, use the first driving mechanism 41 to drive the polishing wheel 2 to rotate, and at the same time, rotate the gear transmission shaft 93 to drive the dressing pen to slowly move to the other end of the polishing wheel 2 to complete the dressing operation of the polishing wheel 2.

[0064] The present invention sets a trimming mechanism 9 above the polishing wheel 2, so that during the specific use, the trimming mechanism 9 can be used to perform a trimming operation on the polishing wheel 2. On the one hand, the concentricity of the polishing wheel 2 can be guaranteed, ensuring that the polishing wheel 2 will not vibrate, swing, etc. during operation, thereby ensuring the polishing effect; on the other hand, when it is necessary to switch to polishing screw products with different pitches, the trimming mechanism 9 can be directly used to trim the polishing wheel 2, so that the polishing wheel 2 can adapt to the polishing of different screw products without the need to replace the polishing wheel 2.

[0065] In some embodiments of the present invention, please refer to Figure 6 and Figure 7 As shown, the bracket 1 includes a screw polishing support plate 11 located between the polishing wheel 2 and the guide wheel 3 and V-shaped support plates 12 located at both ends of the screw polishing support plate 11 along the length direction of the screw polishing support plate 11; the midline of the two V-shaped support plates 12 along the length direction coincides with the midline of the screw polishing support plate 11 along the length direction;

[0066] The bracket adjustment mechanism 7 includes a first horizontal adjustment component 71 that drives the screw polishing support plate 11 to move closer to or away from the polishing wheel 2 in the horizontal direction, a second horizontal adjustment component 72 that drives the V-shaped support plate 12 to move closer to or away from the polishing wheel 2 in the horizontal direction, a first lifting adjustment component 73 that drives the screw polishing support plate 11 to rise and fall, and a second lifting adjustment component 74 that drives the V-shaped support plate 12 to rise and fall; the first horizontal adjustment component 71 is connected to the first lifting adjustment component 73, and the screw polishing support plate 11 is connected to the first horizontal adjustment component 71 or the first lifting adjustment component 73; the second horizontal adjustment component 72 is connected to the second lifting adjustment component 74, and the V-shaped support plate 12 is connected to the second horizontal adjustment component 72 or the second lifting adjustment component 74. When the bracket adjustment mechanism 7 of the present invention is used in practice, the first horizontal adjustment component 71 can be used to drive the screw polishing support plate 11 to perform horizontal movement adjustment, and the first lifting adjustment component 73 can be used to lift the screw polishing support plate 11; similarly, the second horizontal adjustment component 72 can be used to drive the V-shaped support plate 12 to perform horizontal movement adjustment, and the second lifting adjustment component 74 can be used to drive the V-shaped support plate 12 to perform lifting adjustment.

[0067] The present invention designs a bracket 1 including a screw polishing support plate 11 located between the polishing wheel 2 and the guide wheel 3 and a V-shaped support plate 12 located at both ends of the screw polishing support plate 11, so that during use, the screw polishing support plate 11 can be used to meet the support requirements for the screw, and the screw polishing support plate 11 can be prevented from affecting the work of the polishing wheel 2 and the guide wheel 3. The V-shaped support plate 12 can also be used to support the screw during input and output, thereby reducing manual intervention and helping to improve production efficiency. At the same time, the screw polishing support plate 11 is equipped with a first horizontal adjustment component 71 and a first lifting adjustment component 73, and the V-shaped support plate 12 is equipped with a second horizontal adjustment component 72 and a second lifting adjustment component 74, so that the position adjustment of the screw polishing support plate 11 and the V-shaped support plate 12 can be well realized during specific use. On the one hand, it can be well adapted to screws of various sizes; on the other hand, the screw polishing support plate 11 and the V-shaped support plate 12 can be moved below the axis of the screw, and the center line of the screw polishing support plate 11 and the V-shaped support plate 12 along the length direction is directly opposite to the axis of the screw, thereby ensuring that the polishing wheel 2 can accurately polish the screw.

[0068] As a specific embodiment of the present invention, the first horizontal adjustment component 71 and the first lifting adjustment component 73 can be implemented by using a third locking member 751 and an elongated circular hole 752; the second horizontal adjustment component 72 and the second lifting adjustment component 74 can both be implemented by using a screw adjustment component.

[0069] As a specific implementation of the present invention, please focus on Figure 3 and Figure 4 As shown, the first rotation adjustment mechanism 5 includes a hoop 55 and a rotation adjustment shaft 56; the hoop 55 is tightened on the outside of the rotation adjustment shaft 56, one end of the rotation adjustment shaft 56 is provided with a first support plate 561 for supporting the polishing wheel 2, and the other end of the rotation adjustment shaft 56 is provided with a second support plate 562 for supporting the first driving mechanism 41; in the specific implementation of the present invention, the first driving mechanism 41 specifically includes a first driving motor 411 and a transmission belt 412, wherein the first driving motor 411 is fixedly mounted on the second support plate 562, and the transmission belt 412 is connected between the output end of the first driving motor 411 and the first shaft body 21, so that the first driving motor 411 can drive the first shaft body 21 to drive the polishing wheel 2 to rotate. In the specific use of the present invention, when the polishing wheel 2 needs to be adjusted, it is only necessary to loosen the hoop 55 to realize the rotation adjustment of the polishing wheel 2, and after the adjustment is completed, it is only necessary to use the hoop 55 to tighten the rotation adjustment shaft 56 so that the rotation adjustment shaft 56 cannot rotate.

[0070] As a specific implementation of the present invention, please focus on Figure 6 and Figure 7As shown, the second rotation adjustment mechanism 6 includes a fixed support 61 and an adjustment support 62; the fixed support 61 is provided with a plurality of arc-shaped rotation adjustment grooves 611 spaced around the circumferential direction, and the adjustment support 62 is locked and connected to the fixed support 61 through a plurality of first locking members 63; the guide wheel 3 and the second driving mechanism 42 are both mounted on the adjustment support 62. In the specific implementation of the present invention, the second driving mechanism 42 specifically includes a second driving motor 421 and a transmission chain 422, the second driving motor 421 is fixedly mounted on the adjustment support 62, and the transmission chain 422 is connected between the output end of the second driving motor 421 and the second shaft body 31, so that the second driving motor 421 can drive the second shaft body 31 to drive the guide wheel 3 to rotate. When the present invention is used in practice, when the guide wheel 3 needs to be adjusted, it is only necessary to loosen the first locking member 63 and use the adjustment support 62 to drive the guide wheel 3 to rotate and adjust. After the adjustment is completed, it is only necessary to use the first locking member 63 to lock the adjustment support 62 and the fixed support 61 together.

[0071] In summary, the present invention combines the thread shape characteristics and motion characteristics of the screw rod to design a set of automatic polishing equipment to achieve automatic feeding and uniform polishing of the screw rod, and the operator can monitor and operate in an area away from dust pollution; at the same time, it can perform automatic feeding and polishing for trapezoidal screw rods with deep thread profiles, especially meeting the automatic feeding and polishing requirements of rolled screw rod products with large lead and large helix angle on the current market, and ensuring the polishing effect. By adopting the automatic polishing equipment of the present invention to replace the current manual polishing of the screw rod by hand in the factory against the polishing machine, at least the following significant advantages are achieved:

[0072] The polishing effect can be guaranteed: by accurately controlling the feed rate of the screw and the pressure of the polishing wheel, the tooth shape can be polished evenly and a higher polishing quality can be achieved;

[0073] Improved production efficiency: Automated polishing equipment can achieve continuous and rapid polishing operations, greatly improving production efficiency and reducing the time and labor intensity of manual operations;

[0074] Improved working environment: Operators can monitor and operate in areas away from dust pollution. At the same time, dust collection and treatment devices can be installed during the actual production process to effectively reduce dust concentration in the workplace and protect the health of operators.

[0075] Reduced production costs: Reduced reliance on manual operations, reduced labor costs, while improving product quality consistency and reducing scrap rates.

[0076] Embodiment 2

[0077] See also Figures 1 to 7As shown, a polishing method of a universal screw thread polishing machine 100 of the present invention, the specific structure and the beneficial technical effects that can be obtained by the universal screw thread polishing machine 100 are exactly the same as those of the first embodiment, please refer to the detailed introduction of the first embodiment for details, and will not be repeated here; the polishing method comprises the following steps:

[0078] According to the screws with different spiral angles to be polished, the position of the bracket 1 is adjusted by the bracket adjustment mechanism 7, so that the screw placed on the bracket 1 is between the polishing wheel 2 and the guide wheel 3 and is at the required height position. In the specific implementation of the present invention, the bracket adjustment mechanism 7 can be used to drive the bracket 1 to move horizontally or vertically; the polishing wheel 2 is driven to rotate and adjust by the first rotation adjustment mechanism 5, so that the polishing wheel 2 is tilted to the angle required by the screw spiral angle and effective contact is achieved with the tooth profile of the screw; the guide wheel 3 is driven to rotate and adjust by the second rotation adjustment mechanism 6, so that the guide wheel 3 is tilted to the required angle and is in contact with the screw transmission, so that the guide wheel 3 is used to drive the screw to automatically move forward at a uniform speed; wherein, the inclination directions of the polishing wheel 2 and the guide wheel 3 are opposite;

[0079] The screw rod to be polished is placed on the bracket 1, and the polishing wheel 2 is driven to rotate by the first driving mechanism 41, so that the polishing wheel 2 is used to polish the screw rod; at the same time, the guide wheel 3 is driven to rotate by the second driving mechanism 42, so that the guide wheel 3 automatically drives the screw rod to move forward at a uniform speed; wherein, the rotation speed of the polishing wheel 2 is greater than the rotation speed of the guide wheel 3. By adopting the above technical scheme of the present invention, not only the polishing requirements of multi-head screw rod products with different helical lead angles are well met, but in particular, it can be well applied to polishing of screw rods with a helical lead angle greater than 3 degrees and deep thread screw rods, without the need to purchase different polishing machines for different screw rod products, which can reduce costs; and the guide wheel 3 with a lower rotation speed is used to limit the movement speed of the screw rod, and the polishing wheel 2 with a higher rotation speed is used to polish the screw rod, which can ensure that the polishing wheel 2 can fully and effectively polish the screw rod and ensure the polishing effect; at the same time, the guide wheel 3 is used to drive the screw rod to automatically move forward at a uniform speed, without the need for manual hand-held polishing of the screw rod, which can effectively improve production efficiency, realize large-scale production, and further ensure the polishing effect.

[0080] In some embodiments of the present invention, after the polishing wheel 2 is driven to rotate and adjust by the first rotation adjustment mechanism 5, the method further includes:

[0081] The number and thickness of the polishing wheel 2 are set according to the lead size of the screw, that is, in the specific implementation of the present invention, one or more polishing wheels 2 can be designed for polishing according to the lead size of the screw that needs to be polished, and polishing wheels 2 of different thicknesses can also be selected for polishing according to actual needs; when only one polishing wheel 2 is set, the position of the polishing wheel 2 along the axial direction is adjusted so that the position of one-half of the total thickness of the polishing wheel 2 along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism 5; when there are at least two polishing wheels 2 set closely together, the position of each polishing wheel 2 along the axial direction is adjusted so that the position of one-half of the total thickness of each polishing wheel 2 along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism 5. In this way, it can be ensured that during the polishing process, the tooth profile of the polishing wheel 2 can be fully and effectively contacted and polished with the tooth profile of the screw, thereby ensuring that the tooth profile of the polishing wheel 2 can effectively participate in polishing and ensure the polishing effect.

[0082] In some embodiments of the present invention, the method further includes: before polishing the screw, manually adjusting the horizontal movement of the polishing wheel 2 by using the compensation adjustment mechanism 8 to compensate for the loss of the polishing wheel 2; specifically, adjusting the position of the compensation limit nut 82 so that the compensation limit nut 82 abuts against the outer side of the limit fixing seat 84, and manually rotating the compensation adjustment screw 83 to drive the upper slide 54 to slide and feed, thereby realizing manual compensation of the polishing wheel 2, that is, manually adjusting the distance deviation between the compensation polishing wheel 2 and the guide wheel 3 caused by the wear of the polishing wheel 2 to ensure the polishing effect; at the same time, the upper slide 54 can also be driven to slide and adjust by manually rotating the compensation adjustment screw 83, and then the distance between the polishing wheel 2 and the guide wheel 3 can be adjusted by driving the polishing wheel 2 through the upper slide 54, and then the bracket adjustment mechanism 7 can be used to adjust the bracket 1, so as to ensure that the polishing machine can well adapt to the polishing of screws of various sizes;

[0083] Alternatively, during the process of polishing the screw rod, the compensating adjustment mechanism 8 is used to dynamically move and adjust the polishing wheel 2 to compensate for the loss caused by the polishing wheel in real time; specifically, the compensating limit nut 82 is moved a certain distance away from the limit fixing seat 84, and the compensating adjustment cylinder 81 is used to apply pressure to the upper slide seat 54 during the polishing process, so as to achieve dynamic compensation for the distance deviation between the polishing wheel 2 and the guide wheel 3 caused by the wear of the polishing wheel 2, so as to ensure the polishing effect.

[0084] In some embodiments of the present invention, the method also includes: before polishing the screw, according to the different screws to be polished, using a dressing mechanism 9 to dress the polishing wheel 2 to ensure the concentricity of the polishing wheel 2, and ensuring that the polishing wheel 2 does not vibrate, swing, etc. during operation, thereby ensuring the polishing effect; at the same time, when it is necessary to switch to polishing screw products with different pitches, the dressing mechanism 9 can also be directly used to dress the polishing wheel 2, so that the polishing wheel 2 can adapt to the polishing of different screw products without the need to replace the polishing wheel 2.

[0085] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A universal screw thread polishing machine, comprising a bracket, a polishing wheel located on one side of the bracket, a guide wheel located on the other side of the bracket, a first driving mechanism for driving the polishing wheel to rotate, and a second driving mechanism for driving the guide wheel to rotate; characterized in that: It also includes a first rotation adjustment mechanism, a second rotation adjustment mechanism and a bracket adjustment mechanism; the polishing wheel is rotatably arranged on the first rotation adjustment mechanism through a first axis, the guide wheel is rotatably arranged on the second rotation adjustment mechanism through a second axis, and the bracket is arranged on the bracket adjustment mechanism; the polishing wheel is driven by the first rotation adjustment mechanism to rotate and adjust so that the polishing wheel is tilted to the angle required by the screw helix angle, and the guide wheel is driven by the second rotation adjustment mechanism to rotate and adjust so that the guide wheel is tilted to the required angle, and the inclination directions of the polishing wheel and the guide wheel are opposite, and the rotation speed of the guide wheel is less than the rotation speed of the polishing wheel; the bracket is driven by the bracket adjustment mechanism to adjust its position.

2. A universal screw thread polishing machine as claimed in claim 1, characterized in that: The first rotation adjustment mechanism is provided with a spindle seat on the side facing the bracket, and the first shaft body is rotatably provided on the spindle seat, and an axial adjustment component is provided between the spindle seat and the first rotation adjustment mechanism; the axial adjustment component drives the polishing wheel on the first shaft body to adjust its position along the axial direction of the first shaft body, so that half of the total thickness of the polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism, or half of the total thickness of each closely arranged polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism.

3. A universal screw thread polishing machine as claimed in claim 1, characterized in that: It also includes a compensation adjustment mechanism for driving the polishing wheel to compensate for loss; the bottom of the first rotation adjustment mechanism is equipped with a fixed base and an upper slide seat, and the upper slide seat is connected to the top of the fixed base by sliding assembly; The compensation adjustment mechanism includes a compensation adjustment cylinder, a compensation limit nut, a compensation adjustment screw, a limit fixing seat and a compensation nut seat; the lower end of the limit fixing seat is fixedly connected to the side of the fixed base away from the bracket, and the upper end of the limit fixing seat is penetrated by an adjustment screw through hole, the size of the adjustment screw through hole is smaller than the size of the compensation limit nut; the compensation nut seat is arranged on the upper slide seat, the compensation adjustment screw passes through the adjustment screw through hole and is threadedly connected to the compensation nut seat, the compensation limit nut can be screwed on the compensation adjustment screw to adjust the tightness, and the compensation limit nut is located on the outside of the limit fixing seat; the movable end of the compensation adjustment cylinder is connected to the upper slide seat.

4. A universal screw thread polishing machine as claimed in claim 2, characterized in that: Also included is a dressing mechanism disposed above the polishing wheel; The dressing mechanism includes a movable rack rod, a dressing pen, an upper and lower sliding seat for the dressing pen and a gear transmission shaft; a rack rod assembly cylinder is formed on the spindle seat along the axial direction of the first shaft body, the movable rack rod is movably inserted in the rack rod assembly cylinder, and a rack rod transmission tooth is formed on the bottom of the movable rack rod along the length direction; one end of the gear transmission shaft is inserted into the rack rod assembly cylinder and is provided with a driving gear meshing with the rack rod transmission teeth, and the other end of the gear transmission shaft extends to the outside of the spindle seat; one end of the movable rack rod extends to the outside of the spindle seat, and the upper and lower sliding seat of the dressing pen can be adjusted up and down and connected to the protruding end of the movable rack rod, and the dressing pen is detachably connected to the bottom of the upper and lower sliding seat of the dressing pen.

5. A universal screw thread polishing machine as claimed in claim 1, characterized in that: The bracket includes a screw polishing support plate located between the polishing wheel and the guide wheel and V-shaped support plates located at both ends of the screw polishing support plate along the length direction of the screw polishing support plate; the center line of the two V-shaped support plates along the length direction coincides with the center line of the screw polishing support plate along the length direction; The bracket adjustment mechanism includes a first horizontal adjustment component that drives the screw polishing support plate close to or away from the polishing wheel in the horizontal direction, a second horizontal adjustment component that drives the V-shaped support plate close to or away from the polishing wheel in the horizontal direction, a first lifting adjustment component that drives the screw polishing support plate to rise and fall, and a second lifting adjustment component that drives the V-shaped support plate to rise and fall; the first horizontal adjustment component is connected to the first lifting adjustment component, and the screw polishing support plate is connected to the first horizontal adjustment component or the first lifting adjustment component; the second horizontal adjustment component is connected to the second lifting adjustment component, and the V-shaped support plate is connected to the second horizontal adjustment component or the second lifting adjustment component.

6. A universal screw thread polishing machine as claimed in claim 1, characterized in that: The first rotation adjustment mechanism includes a hoop and a rotation adjustment shaft; the hoop is clamped on the outside of the rotation adjustment shaft, one end of the rotation adjustment shaft is provided with a first support plate for supporting the polishing wheel, and the other end of the rotation adjustment shaft is provided with a second support plate for supporting the first driving mechanism; The second rotation adjustment mechanism includes a fixed support and an adjustment support; the fixed support is provided with a plurality of arc-shaped rotation adjustment grooves spaced around a circumferential direction, and the adjustment support is locked and connected to the fixed support via a plurality of first locking members; the guide wheel and the second driving mechanism are both mounted on the adjustment support.

7. A polishing method based on the universal screw thread polishing machine according to any one of claims 1 to 6, characterized in that: The polishing method comprises the following steps: According to the screws with different helical angles to be polished, the position of the bracket is adjusted by the bracket adjustment mechanism, so that the screw placed on the bracket is between the polishing wheel and the guide wheel and at the required height position; the polishing wheel is driven to rotate and adjust by the first rotation adjustment mechanism, so that the polishing wheel is tilted to the angle required by the screw helical angle and effectively contacts the tooth profile of the screw; the guide wheel is driven to rotate and adjust by the second rotation adjustment mechanism, so that the guide wheel is tilted to the required angle and contacts the screw transmission; wherein the inclination directions of the polishing wheel and the guide wheel are opposite; The screw rod to be polished is placed on the bracket, and the polishing wheel is driven to rotate by the first driving mechanism so as to polish the screw rod with the polishing wheel; at the same time, the guide wheel is driven to rotate by the second driving mechanism so as to drive the screw rod to move forward; wherein, the rotation speed of the polishing wheel is greater than the rotation speed of the guide wheel.

8. The polishing method of a universal screw thread polishing machine according to claim 7, characterized in that: After the polishing wheel is driven to rotate and adjust by the first rotation adjustment mechanism, the method further includes: The number and thickness of the polishing wheels are set according to the lead size of the screw rod; when only one polishing wheel is provided, the position of the polishing wheel along the axial direction is adjusted so that the position of half of the total thickness of the polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism; When there are at least two polishing wheels closely arranged, the position of each polishing wheel along the axial direction is adjusted so that the position of half of the total thickness of each polishing wheel along the axial direction is aligned with the rotation center of the first rotation adjustment mechanism.

9. The polishing method of a universal screw thread polishing machine according to claim 7, characterized in that: The method further comprises: before polishing the screw rod, manually adjusting the horizontal movement of the polishing wheel by using a compensation adjustment mechanism to compensate for the loss of the polishing wheel; Alternatively, during the polishing process of the lead screw, a compensation adjustment mechanism is used to automatically perform dynamic movement adjustment on the polishing wheel to compensate for the loss of the polishing wheel in real time.

10. The polishing method of a universal screw thread polishing machine according to claim 7, characterized in that: The method further comprises: before polishing the screw rod, according to different screw rods to be polished, using a dressing mechanism to dress the polishing wheel to ensure the concentricity of the polishing wheel.

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