Flexible assembly tool suitable for ball screw

Abstract

The flexible assembly tool suitable for the ball screw comprises a soft package type limiting module, the soft package type limiting module comprises two clamping plates which are arranged in a mirror symmetry mode, a flexible protection pipe is clamped between the two clamping plates, and the protection pipe is provided with a through hole for the ball screw to penetrate through; the clamping block limiting module comprises a fixed clamping block and a movable clamping block, the movable clamping block has the translational degree of freedom of approaching or leaving relative to the fixed clamping block, the fixed clamping block and the movable clamping block can functionally clamp the outer wall of the nut, and the lead screw and the nut are movably assembled; the flexible package type limiting module and the clamping block limiting module have translation freedom degrees which are close to each other or away from each other and are perpendicular to the translation freedom degree direction of the movable clamping block. By the adoption of the limiting device, the lead screw and the nut can be limited, on the premise that the lead screw and the nut are not damaged, the lead screw and the nut can be conveniently adjusted to the most appropriate state, and then the lead screw, the nut and other parts are assembled or the lead screw and the nut are installed on automation equipment.

Description

Technical Field

[0001] The utility model relates to the field of screw assembly, in particular to a flexible assembly tool suitable for a ball screw. Background Art

[0002] Ball screws are also often used in the field of automation. Ball screws can convert rotational motion into stable linear reciprocating translational motion.

[0003] From the perspective of shaft length and diameter, ball screws have various specifications, large or small. When the size and mass of the ball screw are large, it is not convenient for personnel to manually assemble it to non-standard equipment. Whether from the perspective of assembly safety or screw installation accuracy, it is not suitable for personnel to directly operate manually. At the same time, if the ball screw does not have targeted tooling, if the screw is placed directly on the ground or on a workbench, the threads on the surface of the screw are also easily scratched. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a flexible assembly tool suitable for a ball screw, which can limit the position of the screw and the nut, and facilitate the adjustment of the screw and the nut to the most suitable state without damaging the screw and the nut, thereby realizing the assembly of the screw, the nut and other components or the installation of the screw and the nut on automation equipment.

[0005] In order to solve the above problems, the utility model provides a flexible assembly tool suitable for a ball screw. In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A flexible assembly tool suitable for a ball screw, comprising: a soft-pack limit module, comprising two clamping plates arranged in mirror symmetry, a flexible protective tube clamped between the two clamping plates, the protective tube having a through hole for the screw to pass through; a clamp block limit module, comprising a fixed clamp block and a movable clamp block, the movable clamp block having a translational freedom of approaching or moving away from the fixed clamp block, the fixed clamp block and the movable clamp block can functionally clamp the outer wall of the nut, and the screw and the nut are movably assembled; the soft-pack limit module and the clamp block limit module have a translational freedom of approaching or moving away from each other, and the direction is perpendicular to the translational freedom direction of the movable clamp block.

[0007] The beneficial effects of adopting the above technical solution are: this technical solution uses a soft-pack limit module and a clamp block limit module to hold the lead screw, which is similar to the effect of holding the lead screw horizontally with two hands. First, the protective tube is a form for the lead screw to pass through, which can limit the translational freedom of the lead screw up, down, left and right here, and because the protective tube is soft, it will not squeeze and damage the surface of the lead screw. Secondly, the splint applies force to the outer wall of the protective tube, and can ensure that the through hole of the protective tube has a radially inward elastic extrusion force on the lead screw. Thirdly, the outer wall of the nut can withstand a larger force relatively, so it is directly clamped with a fixed clamp block and a movable clamp block. Finally, in order to adapt to the actual assembly of the lead screw and the nut with other small parts or non-standard automation racks, the distance between the soft-pack limit module and the clamp block limit module can be adjusted so that the assembly of the lead screw and the nut can be adjusted to the most suitable state.

[0008] As a further improvement of the utility model, the hardness of the protection tube is less than the hardness of the clamping plate, and the hardness of the protection tube is also less than the hardness of the fixed clamping block or the movable clamping block; the inner diameter of the through hole is not greater than the outer diameter of the screw.

[0009] The beneficial effect of adopting the above technical solution is: ensuring that the protection tube will not damage the surface of the screw.

[0010] As a further improvement of the present invention, the protection tube is made of foam or rubber; the inner wall of the through hole has a convex thread, and the convex thread and the concave thread of the outer wall of the lead screw are matched with each other.

[0011] The beneficial effect of adopting the above technical solution is that the convex thread is also flexible, which can enhance the axial locking force between the protective tube and the lead screw.

[0012] As a further improvement of the utility model, the soft-pack limit module and the clamp block limit module are each equipped with a movable plate at the bottom, and the bottom surfaces of the movable plates are jointly movably equipped with a longitudinal linear guide rail through a first slider. The connection direction of the soft-pack limit module and the clamp block limit module is parallel to the length direction of the longitudinal linear guide rail, and the longitudinal linear guide rail is fixed with a bottom plate.

[0013] The beneficial effect of adopting the above technical solution is that the movable plate, the first sliding block and the longitudinal linear guide rail are used to realize the translational freedom of the soft-pack limiting module and the clamping block limiting module to move closer to or away from each other.

[0014] As a further improvement of the utility model, a transverse linear guide is fixed to the top surface of the movable plate corresponding to the soft-pack limit module, and the clamping plate is movably assembled with the transverse linear guide through a second slider, and the length direction of the transverse linear guide is perpendicular to the length direction of the longitudinal linear guide.

[0015] The beneficial effect of adopting the above technical solution is that sometimes the actual installation of the lead screw requires fine-tuning of the orientation angle, and the soft-pack limit module therefore has a certain degree of fine-tuning capability in the left and right directions.

[0016] As a further improvement of the utility model, the facing surfaces of the two clamping plates of the soft-pack type limiting module are provided with a recessed portion, the outer wall of the protection tube is clamped and fixed to the inner wall of the recessed portion, and the cross-sectional profile of the outer wall of the protection tube is a rectangle.

[0017] The beneficial effect of adopting the above technical solution is that the outer wall of the protection tube is shaped to prevent itself and the splint from turning over and loosening. The protection tube is "round inside and square outside", similar to the shape of an ancient jade cong.

[0018] As a further improvement of the present invention, the two clamping plates of the soft-pack limiting module are connected by locking screws, and both sides of the recessed portion are provided with locking screws, and the two clamping plates are driven to move closer to or away from each other by turning the knob locking screws.

[0019] The beneficial effect of adopting the above technical solution is that the clamping plate has an internal thread that is movably assembled with the locking screw, and the locking screw realizes the clamping effect of the clamping plate on the protective tube.

[0020] As a further improvement of the utility model, the bottom of the clamp is assembled with the second slider through an axial screw, the clamp has the freedom of rotation around the axial screw, and the axis of the locking screw is perpendicular to the axis of the axial screw.

[0021] The beneficial effect of adopting the above technical solution is that when necessary, the clamping plate can be centered on the locking screw and can be in a mirror-image opening and closing state, which is convenient for replacing the protective tube.

[0022] As a further improvement of the utility model, the fixed clamp block includes a horizontal section and a vertical section. The horizontal section is integrally connected to the bottom of the vertical section. The horizontal section is provided with a linear groove, and the movable clamp block is provided with a tenon that is movably assembled with the linear groove. The facing surfaces of the vertical section of the fixed clamp block and the movable clamp block are provided with convex ribs extending toward each other, and the convex ribs can be clamped and contacted with the outer wall of the nut.

[0023] The beneficial effect of adopting the above technical solution is that the fixed clamping block and the movable clamping block form a head structure similar to an adjustable wrench, which ensures the mutual translation freedom while also having a relatively large structural strength.

[0024] As a further improvement of the utility model, one side of the movable clamping block facing the vertical section of the fixed clamping block is provided with a slope surface, and a clamping gap is formed between the convex ribs of the fixed clamping block and the movable clamping block; along the direction from the top opening of the clamping gap to the bottom of the clamping gap, the slope surface makes the width of the clamping gap gradually narrow.

[0025] The beneficial effect of adopting the above technical solution is that the shaping of the clamping notch by the slope surface is to adapt to the shape of the convex surface of the outer wall of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a top view of an implementation method of the utility model;

[0028] Figure 2 It is an AA cross-sectional view of an embodiment of the utility model;

[0029] Figure 3 It is a BB cross-sectional view of an embodiment of the utility model;

[0030] Figure 4 It is a three-dimensional diagram of an embodiment of the utility model;

[0031] Figure 5 It is a partial enlarged view of position D of an implementation mode of the utility model;

[0032] Figure 6 It is a partial enlarged view of location E of an implementation method of the utility model;

[0033] Figure 7 It is a three-dimensional diagram of an embodiment of the utility model;

[0034] Figure 8 It is an application schematic diagram of an implementation mode of the utility model.

[0035] 1-screw; 2-nut; 3-bearing; 4-base plate; 5-longitudinal linear guide; 6-end stopper; 7-self-locking stopper; 71-buffer rod; 8-movable plate; 9-first slider; 10-transverse linear guide; 11-second slider; 12-clamp; 121-recess; 13-protective tube; 131-through hole; 14-locking screw; 15-axial screw; 16-fixed clamp; 161-horizontal section; 162-vertical section; 163-linear groove; 17-movable clamp; 171-tenon; 172-slope surface; 18-convex rib. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0037] In order to achieve the purpose of the utility model, a flexible assembly tool suitable for a ball screw includes: a soft-pack limit module, including two clamps 12 arranged in a mirror-symmetrical manner, a flexible protective tube 13 is clamped between the two clamps 12, and the protective tube 13 has a through hole 131 for the screw 1 to pass through; a clamp block limit module, including a fixed clamp block 16 and a movable clamp block 17, the movable clamp block 17 has a translational freedom of approaching or moving away from the fixed clamp block 16, the fixed clamp block 16 and the movable clamp block 17 can functionally clamp the outer wall of the nut 2, and the screw 1 and the nut 2 are movably assembled; the soft-pack limit module and the clamp block limit module have a translational freedom of approaching or moving away from each other, and are perpendicular to the direction of the translational freedom of the movable clamp block 17.

[0038] The beneficial effects of adopting the above technical solution are: this technical solution uses a soft-pack limit module and a clamp block limit module to hold the lead screw, which is similar to the effect of holding the lead screw horizontally with two hands. First, the protective tube is a form for the lead screw to pass through, which can limit the translational freedom of the lead screw up, down, left and right here, and because the protective tube is soft, it will not squeeze and damage the surface of the lead screw. Secondly, the splint applies force to the outer wall of the protective tube, and can ensure that the through hole of the protective tube has a radially inward elastic extrusion force on the lead screw. Thirdly, the outer wall of the nut can withstand a larger force relatively, so it is directly clamped with a fixed clamp block and a movable clamp block. Finally, in order to adapt to the actual assembly of the lead screw and the nut with other small parts or non-standard automation racks, the distance between the soft-pack limit module and the clamp block limit module can be adjusted so that the assembly of the lead screw and the nut can be adjusted to the most suitable state.

[0039] In other embodiments of the present invention, the hardness of the protection tube 13 is less than that of the clamp 12 , and the hardness of the protection tube 13 is also less than that of the fixed clamp 16 or the movable clamp 17 ; the inner diameter of the through hole 131 is not greater than the outer diameter of the screw 1 .

[0040] The beneficial effect of adopting the above technical solution is: ensuring that the protection tube will not damage the surface of the screw.

[0041] In some other embodiments of the present invention, the protection tube 13 is made of foam or rubber; the inner wall of the through hole 131 has a convex thread, and the convex thread and the concave thread on the outer wall of the lead screw 1 are matched with each other.

[0042] like Figure 8 As shown, the concave thread of the outer wall of the screw 1 is shown, as shown in FIG. Figure 6 As shown, the convex thread on the inner wall of the through hole 131 is not shown.

[0043] The beneficial effect of adopting the above technical solution is that the convex thread is also flexible, which can enhance the axial locking force between the protective tube and the lead screw.

[0044] In other embodiments of the utility model, the soft-pack limit module and the clamp block limit module are each equipped with a movable plate 8 at the bottom, and the bottom surface of the movable plate 8 is jointly and movably equipped with a longitudinal linear guide rail 5 through a first slider 9. The connection direction of the soft-pack limit module and the clamp block limit module is parallel to the length direction of the longitudinal linear guide rail 5, and the longitudinal linear guide rail 5 is fixed with a bottom plate 4.

[0045] The beneficial effect of adopting the above technical solution is that the movable plate, the first sliding block and the longitudinal linear guide rail are used to realize the translational freedom of the soft-pack limiting module and the clamping block limiting module to move closer to or away from each other.

[0046] In other embodiments of the utility model, a transverse linear guide rail 10 is fixed to the top surface of the movable plate 8 corresponding to the soft-pack limit module, and the clamping plate 12 is movably assembled with the transverse linear guide rail 10 through the second slider 11, and the length direction of the transverse linear guide rail 10 is perpendicular to the length direction of the longitudinal linear guide rail 5.

[0047] The beneficial effect of adopting the above technical solution is that sometimes the actual installation of the lead screw requires fine-tuning of the orientation angle, and the soft-pack limit module therefore has a certain degree of fine-tuning capability in the left and right directions.

[0048] In other embodiments of the present invention, the facing surfaces of the two clamping plates 12 of the soft-pack limiting module have a recessed portion 121, the outer wall of the protection tube 13 is clamped and fixed to the inner wall of the recessed portion 121, and the cross-sectional profile of the outer wall of the protection tube 13 is rectangular.

[0049] The beneficial effect of adopting the above technical solution is that the outer wall of the protection tube is shaped to prevent itself and the splint from turning over and loosening. The protection tube is "round inside and square outside", similar to the shape of an ancient jade cong.

[0050] like Figure 3 and Figure 6 As shown, in other embodiments of the present invention, the two clamping plates 12 of the soft-pack limiting module are connected by a locking screw 14, and both sides of the recessed portion 121 are provided with a locking screw 14, and the two clamping plates 12 are driven to move closer or farther from each other by turning the knob locking screw 14.

[0051] like Figure 3 As shown, the two locking screws 14 are respectively located at the upper and lower sides of the recessed portion 121 .

[0052] The beneficial effect of adopting the above technical solution is that the clamping plate has an internal thread that is movably assembled with the locking screw, and the locking screw realizes the clamping effect of the clamping plate on the protective tube.

[0053] like Figure 3 and Figure 6As shown, in other embodiments of the present invention, the bottom of the clamp 12 is assembled with the second slider 11 through the axial screw 15, the clamp 12 has the freedom of rotation around the axial screw 15, and the axis of the locking screw 14 is perpendicular to the axis of the axial screw 15.

[0054] The beneficial effect of adopting the above technical solution is that when necessary, the clamping plate can be centered on the locking screw and can be in a mirror-image opening and closing state, which is convenient for replacing the protective tube.

[0055] like Figure 5 As shown, in other embodiments of the utility model, the fixed clamp block 16 includes a horizontal section 161 and a vertical section 162, the horizontal section 161 is integrally connected to the bottom of the vertical section 162, the horizontal section 161 is provided with a linear groove 163, and the movable clamp block 17 is provided with a tenon 171 movably assembled with the linear groove 163; the facing surfaces of the vertical section 162 of the fixed clamp block 16 and the movable clamp block 17 are provided with convex ribs 18 extending toward each other, and the convex ribs 18 can be clamped and contacted with the outer wall of the nut 2.

[0056] The beneficial effect of adopting the above technical solution is that the fixed clamping block and the movable clamping block form a head structure similar to an adjustable wrench, which ensures the mutual translation freedom while also having a relatively large structural strength.

[0057] like Figure 2 and Figure 5 As shown, in other embodiments of the present invention, one side of the movable clamp block 17 facing the vertical section 162 of the fixed clamp block 16 has a slope surface 172, and a clamping gap is formed between the convex ribs 18 of the fixed clamp block 16 and the movable clamp block 17; along the direction from the top opening of the clamping gap to the bottom of the clamping gap, the slope surface 172 makes the width of the clamping gap gradually narrow.

[0058] The beneficial effect of adopting the above technical solution is that the shaping of the clamping notch by the slope surface is to adapt to the shape of the convex surface of the outer wall of the nut.

[0059] like Figure 8 As shown, end blocks 6 are fixed at both ends of the longitudinal linear guide 5, and self-locking blocks 7 are also fixed on the longitudinal linear guide 5. The self-locking blocks 7 are all located between the end blocks 6 at both ends of the longitudinal linear guide 5. Four self-locking blocks 7 are fixed on the same longitudinal linear guide 5, and two of the self-locking blocks 7 define an interval, that is, the activity interval of the first slider 9 on the longitudinal linear guide 5.

[0060] In addition, a buffer rod 71 protrudes from the self-locking stopper 7 , the extension direction of the buffer rod 71 is parallel to the extension direction of the longitudinal linear guide rail 5 , and the buffer rod 71 is located within the projection area of ​​the first sliding block 9 along the length direction of the longitudinal linear guide rail 5 .

[0061] compared to Figures 1 to 7 , Figure 8 The figure shows a lead screw 1, a nut 2, and a bearing 3 sleeved on the lead screw 1.

[0062] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A flexible assembly tool suitable for a ball screw, characterized in that: include: The soft-pack type limit module comprises two clamping plates arranged in mirror symmetry, a flexible protective tube is clamped between the two clamping plates, and the protective tube has a through hole for the lead screw to pass through; The clamp block limiting module includes a fixed clamp block and a movable clamp block, wherein the movable clamp block has a translational freedom of approaching or moving away from the fixed clamp block, and the fixed clamp block and the movable clamp block can functionally clamp the outer wall of the nut, and the lead screw and the nut are movably assembled; The soft-pack type limiting module and the clamping block limiting module have a translational freedom of approaching or moving away from each other, and the translational freedom direction is perpendicular to the movable clamping block.

2. The flexible assembly tool for ball screw according to claim 1, characterized in that: The hardness of the protection tube is less than the hardness of the clamping plate, and the hardness of the protection tube is also less than the hardness of the fixed clamping block or the movable clamping block; The inner diameter of the through hole is not greater than the outer diameter of the lead screw.

3. The flexible assembly tool for ball screw according to claim 1, characterized in that: The protective tube is made of foam or rubber; The inner wall of the through hole is provided with a convex thread, and the convex thread and the concave thread of the outer wall of the lead screw are matched with each other.

4. The flexible assembly tool for ball screw according to claim 1, characterized in that: The soft-pack limiting module and the clamping block limiting module are each equipped with a movable plate at the bottom, and the bottom surface of the movable plate is jointly and movably equipped with a longitudinal linear guide rail through a first slider. The connection direction of the soft-pack limiting module and the clamping block limiting module is parallel to the length direction of the longitudinal linear guide rail, and the longitudinal linear guide rail is fixed with a bottom plate.

5. The flexible assembly tool for ball screw according to claim 4, characterized in that: A transverse linear guide is fixed to the top surface of the movable plate corresponding to the soft-pack type limiting module, and the clamping plate is movably assembled with the transverse linear guide through a second slider, and the length direction of the transverse linear guide is perpendicular to the length direction of the longitudinal linear guide.

6. The flexible assembly tool for ball screw according to claim 5, characterized in that: The facing surfaces of the two clamping plates of the soft-pack type limiting module are provided with a recessed portion, the outer wall of the protection tube is clamped and fixed with the inner wall of the recessed portion, and the cross-sectional profile of the outer wall of the protection tube is a rectangle.

7. The flexible assembly tool for ball screw according to claim 6, characterized in that: The two clamping plates of the soft-pack type limiting module are connected by locking screws, and both sides of the recessed portion are provided with locking screws, and the two clamping plates are driven to move closer to or farther from each other by turning the knob locking screws.

8. The flexible assembly tool for ball screw according to claim 7, characterized in that: The bottom of the clamp is assembled with the second sliding block through an axial screw, the clamp has the freedom of rotation around the axial screw, and the axis of the locking screw is perpendicular to the axis of the axial screw.

9. The flexible assembly tool for ball screw according to claim 1, characterized in that: The fixed clamp block includes a horizontal section and a vertical section, the horizontal section is integrally connected to the bottom of the vertical section, the horizontal section is provided with a linear groove, and the movable clamp block is provided with a tenon movably assembled with the linear groove; The vertical section of the fixed clamp block and the facing surface of the movable clamp block are both provided with convex ribs extending towards each other, and the convex ribs can be clamped and contacted with the outer wall of the nut.

10. The flexible assembly tool for ball screw according to claim 9, characterized in that: The movable clamp block has a sloped surface on one side of the vertical section facing the fixed clamp block, and a clamping gap is formed between the convex ribs of the fixed clamp block and the movable clamp block; along the direction from the top opening of the clamping gap to the bottom of the clamping gap, the sloped surface makes the width of the clamping gap gradually narrow.

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