JP3215168U - Linear drive module - Google Patents

Abstract

The present invention provides a linear drive module in which a manufacturing process and an assembling work are simplified, the stability of assembling with an external structure is improved, and a linear rail enhances resistance to an impact of a slider. A linear drive module L including a driving means 1, a linear rail 2, a screw rod 3, and a slider 4 is provided. The linear rail has a bottom plate 21 and a plurality of side walls 22. The plurality of side walls are respectively provided on both sides of the bottom plate, and the plurality of side walls and the bottom plate define the accommodation space SP. Each of the plurality of side walls has at least one rail groove 221 and at least one fixing portion 222. The plurality of rail grooves are provided to face each other, and each fixing portion is provided on the side wall. The screw rod is provided in the accommodation space, and one end thereof is coupled to the driving means. The slider is slid in the accommodating space, and the screw rod is pierced through the slider. [Selection] Figure 2B

Description

  The present invention relates to a linear drive module, and more particularly to a linear drive module having a plurality of fixing portions on a side wall of a linear rail.

  The linear drive module includes a linear rail, a slider, and a plurality of steel balls. The linear rail has at least two rail grooves, and a screw rod is provided between the two end blocks in parallel to the linear rail. The combination of the linear rail and screw rod causes the steel ball to roll continuously in the circulation path, converting the rotation of the screw rod into a linear drive, and consequently the slider and the mechanism above it along the linear rail. To move. Since linear drive modules are frequently used for high-precision machining operations, whether or not the stability and smoothness of operations can be maintained is a basic requirement when inspecting the quality of linear drive modules.

  FIG. 1 shows a conventional linear rail 9, and a screw hole 911 is provided on a bottom plate 91 where a slider is accommodated in the linear rail 9. Therefore, when assembling the linear rail 9 and other members, after positioning the linear rail 9 tightly on the external structure or work table with a plurality of screws S, the linear rail 9 is further assembled with other members of the linear drive module. However, after the linear rail 9 and other members are packed and transported in the factory in advance, they cannot be assembled unless they are unpacked and assembled again, and the entire assembly and transportation work becomes complicated. It will take.

  Therefore, when assembling the linear rail and external structure, how to provide a linear drive module that can reduce assembly and transportation work, reduce manufacturing costs, and improve assembly accuracy and stability Whether or not to do so has become one of the important issues now.

  In view of the above problems, the object of the present invention is to provide a linear rail whose side walls have a plurality of fixing portions, simplify the manufacturing process and assembly work, and improve the stability of the assembly between the linear rail and the external structure. At the same time, the present invention is to provide a linear drive module capable of enhancing the ability of the linear rail to resist the impact of the slider.

  In order to achieve the above object, the present invention provides a linear drive module including a driving means, a linear rail, a screw rod, and a slider. The linear rail has a bottom plate and a plurality of side walls. The plurality of side walls are provided on both sides of the bottom plate, respectively, and the plurality of side walls and the bottom plate define an accommodation space. Each has at least one rail groove and at least one fixing portion, and the plurality of rail grooves are provided to face each other, and each fixing portion is provided on a side wall. The screw rod is provided in the accommodation space and is parallel to the linear rail, and one end of the screw rod is coupled to the driving means. The slider is slid in the accommodating space, the screw rod is penetrated through the slider, the slider has a slider body and a plurality of end covers, and the plurality of end covers are two of the slider body. It is provided at each end.

  In one embodiment, each of the plurality of side walls further has a stepped structure.

  In one embodiment, the fixing part has a through-hole structure.

  In one embodiment, the fixing part has a blind hole structure.

  In one embodiment, the fixing part is a screw hole or an opening.

  In one embodiment, the shape of the radial cross section of the opening is a circle, a polygon or an irregular shape.

  In one embodiment, the linear drive module further comprises a bearing, the drive means further comprises a coupling, the coupling has a base and a plurality of clamping parts, and one end of the base is coupled to the drive means. And the other end of the base portion is coupled to the plurality of clamping portions, the plurality of clamping portions are provided to face each other, and one end of the screw rod is provided to penetrate the base portion and to the plurality of clamping portions. The other end of the screw rod is connected to the bearing.

  In one embodiment, the plurality of clamping portions have at least one screw-through hole, and the plurality of screw-through holes are provided corresponding to each other.

  In one embodiment, the linear drive module further includes two end blocks respectively provided at two ends of the linear rail, and one of the end blocks has a bearing receiving hole. The other end block has a first coupling receiving hole.

  In one embodiment, the linear drive module further includes a plurality of steel balls, and has a plurality of outer circulation grooves corresponding to the plurality of rail grooves outside the slider body, and the plurality of outer circulation grooves. The groove and the plurality of rail grooves together constitute a plurality of outer circulation passages, and both sides of the slider body have a plurality of circulation passages corresponding to the plurality of outer circulation passages. Steel balls are accommodated in the plurality of outer circulation passages and the plurality of circulation paths.

  As described above, since the fixed part of the linear drive module of the present invention is directly provided on the side wall of the linear rail, the linear rail can be directly assembled with other members of the linear drive module at the factory. Can be manufactured and assembled as a complete linear drive module at the factory. After the packaging is completed and transported, the subsequent assembly work can be performed directly by simply tightening and positioning the linear drive module on the external structure or workbench, and the linear drive module can be moved to another external structure or work. When it is desired to replace the table, it is sufficient to perform the replacement operation directly, and unnecessary disassembly, assembly, and transportation are not necessary. Therefore, it is possible to reduce the manufacturing cost, reduce the assembling and transporting operations and time, and improve the assembling accuracy and stability between the linear drive module and the external structure at the same time.

  Also, when the system is in operation, the tightening position of each fixed part is on the side wall of the linear rail, so the operating range of the tightening position is larger than the reciprocating path of the slider, and the linear rail has the ability to resist the impact of the slider. As a result, the stability of system operation can be greatly improved, and the assembly strength of the entire system can be increased.

It is a three-dimensional schematic diagram of a conventional linear rail. It is a three-dimensional schematic diagram of the linear drive module of one Example of this invention. 2B is an exploded view of the linear drive module shown in FIG. 2A. FIG. FIG. 2B is a schematic cross-sectional view taken along the line AA of the linear drive module shown in FIG. 2A. It is a three-dimensional schematic diagram of the linear rail in the linear drive module shown to FIG. 2A. FIG. 3B is a schematic cross-sectional view taken along the line BB of the linear rail shown in FIG. 3A. It is the cross-sectional schematic of the other Example of the linear rail shown to FIG. 3A. It is the three-dimensional schematic diagram of the linear rail of the other Example of this invention. FIG. 4B is a schematic cross-sectional view taken along the line CC of the linear rail shown in FIG. 4A. It is the cross-sectional schematic of the other Example of the linear rail shown to FIG. 4A. It is the three-dimensional schematic diagram of the linear rail of the other Example of this invention. FIG. 5B is a schematic cross-sectional view taken along the line DD of the linear rail shown in FIG. 5A. It is the cross-sectional schematic of the other Example of the linear rail shown to FIG. 5A. It is an assembly schematic diagram of an end block, a bearing and a screw rod in the present invention. It is an assembly schematic diagram of the end block, coupling, drive means and screw rod in the present invention. It is the cross-sectional schematic of the impact force-drag relationship in the conventional linear rail shown in FIG. It is a cross-sectional schematic diagram of the impact force-drag relationship in the linear rail shown in FIG. 3A.

  Hereinafter, a linear drive module according to a preferred embodiment of the present invention will be described with reference to the related drawings. The same components will be described with the same reference numerals.

  Please refer to FIG. 2A, FIG. 2B and FIG. 2C simultaneously. 2A is a three-dimensional schematic diagram of a linear drive module according to an embodiment of the present invention, FIG. 2B is an exploded view of the linear drive module shown in FIG. 2A, and FIG. 2C is an A- of the linear drive module shown in FIG. It is the cross-sectional schematic along A cutting line.

  In the present invention, a linear drive module L including a drive unit 1, a linear rail 2, a screw rod 3, and a slider 4 is provided. The linear rail 2 includes a bottom plate 21 and a plurality of (two in the illustrated example) side walls 22. The plurality of side walls 22 are provided on both sides of the bottom plate 21, and the plurality of side walls 22 and the bottom plate 21 are provided. And an accommodation space SP (see FIG. 2B). The linear rail 2 is a single member in which the plurality of side walls 22 and the bottom plate 21 are integrally molded, and the plurality of side walls 22 and the bottom plate 21 are manufactured by machining from a metal workpiece. The plurality of side walls 22 have at least one rail groove 221 and at least one fixing portion 222, respectively. The plurality of rail grooves 221 are provided to face each other, and each fixing portion 222 has a side wall 22. Are provided respectively. The screw rod 3 is provided in the accommodation space SP and is parallel to the linear rail 2, and one end of the screw rod 3 is coupled to the driving means 1. The slider 4 is slid in the accommodating space SP, the screw rod 3 is pierced through the slider 4, and the slider 4 has a slider body 41 and a plurality of (two in the illustrated example) end covers 42. The plurality of end covers 42 are provided at two ends of the slider body 41, respectively.

  Since the fixed part of the linear drive module of this embodiment is directly provided on the side wall of the linear rail and the tightening position thereof is a completely flat structure, when the linear rail is tightened with a screw in the screw hole, Since the screw hole is not slanted or shifted due to the position of the fixed part, the manufacturing process is optimized to improve the assembly accuracy and stability of the linear rail and external structure, At the same time, the risk of damaging the linear rail structure can be further reduced.

  Further, the linear drive module L further includes a plurality of steel balls 5, and a plurality (two in the illustrated example) of outer circulation grooves 411 (FIG. 2) corresponding to the plurality of rail grooves 221 are provided outside the slider body 41. 2C), the plurality of outer circulation grooves 411 and the plurality of rail grooves 221 jointly constitute a plurality (two in the illustrated example) of outer circulation passages P1, and the steel balls 5 In order to perform the circulation operation, the slider body 41 has a plurality of (two in the illustrated example) circulation paths 412 corresponding to the plurality of outer circulation paths P1, and the plurality of steel balls 5 are The plurality of outer circulation passages P1 and the plurality of circulation passages 412 are accommodated. Among these, the plurality of circulation paths 412 are formed by perforating through holes in the major axis direction in the slider body 41.

  When the driving means 1 is rotated, the screw rod 3 is rotated, and as a result, the slider 4 moves in the accommodation space SP of the linear rail 2, and the steel ball 5, the slider 4 and the screw rod 3 that can be circulated are mutually assembled. By matching, the rotation of the screw rod 3 can be converted to linear drive, and the slider 4 and the mechanism thereon can be linearly reciprocated along the linear rail 2.

  Please refer to FIG. 2A, FIG. 2B and FIGS. 3A to 3C simultaneously. Among these, FIG. 3A is a three-dimensional schematic diagram of the linear rail in the linear drive module shown in FIG. 2A, FIG. 3B is a schematic sectional view taken along the line BB of the linear rail shown in FIG. 3A, and FIG. FIG. 3C is a schematic cross-sectional view of another embodiment of the linear rail shown in FIG. 3A, in which the drawing of the external structure and screws and positioning protrusions is omitted to simplify the drawing, and the linear rail and its fixing portion are different. Only the embodiment is illustrated.

  In this embodiment, the linear rail 2 has a bottom plate 21 and a plurality of (two in the illustrated example) side walls 22. The plurality of side walls 22 are provided on both sides of the bottom plate 21, and the plurality of side walls 22 are provided. A housing space SP is defined by the side wall 22 and the bottom plate 21. The plurality of side walls 22 have at least one rail groove 221 and at least one fixing portion 222, respectively. The plurality of rail grooves 221 are provided to face each other, and each fixing portion 222 has a side wall 22. Are provided respectively. Of these, the side wall 22 further has a first surface 223 (FIG. 3B) and a second surface 224, and the second surface 224 is connected to the bottom plate 21, and the first surface 223 and the second surface 224. Are provided correspondingly.

  As shown in FIG. 3B, the fixing portion 222 has a through-hole structure O1, and the through-hole structure O1 passes through the first surface 223 and the second surface 224. In this case, the fixing portion 222 is a screw hole or an opening, and the shape of the opening in the radial direction can be a circle, a polygon, or an irregular shape (not shown). When the fixing portion 222 is a screw hole, the screw is passed through the first surface 223 and the second surface 224 of the side wall 22 and further connected to the screw hole of the external structure (not shown), so that the linear rail 2 And external structure can be tightened. Further, when the fixing portion 222 is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is passed through the first surface 223 and the second surface 224 of the side wall 22 and is fitted to the fixing portion 222 with an interference fit. In addition, the linear rail 2 and the external structure can be coupled by fitting with the opening of the external structure. At this time, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted to each other, so that the positioning protrusion and the opening can be more firmly coupled.

  Further, as shown in FIG. 3C, the fixing portion 222a can be designed as a blind hole structure O2 according to the assembly design of the linear rail 2a and the external structure, and the blind hole structure O2 is an external structure. Extends from the second surface 224a proximate to the first surface 223a but does not exceed the first surface 223a. Among these, the fixing portion 222a is a screw hole or an opening, and the shape of the opening in the radial direction can be a circle, a polygon, or an irregular shape (not shown). When the fixing portion 222a is a screw hole, the screw is passed through the screw hole of the external structure, and further screwed into the blind hole structure O2 of the second surface 224a, so that the linear rail 2a and the external structure are tightly coupled. be able to. Further, when the fixing portion 222a is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is fitted into the opening of the external structure, and then the fixing portion 222a is further fixed to the fixing portion 222a of the second surface 224a of the side wall 22a. The linear rail 2 and the external structure can be coupled by causing an interference fit by entering. At this time, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted to each other, so that the positioning protrusion and the opening can be more firmly coupled.

  In the present embodiment, the linear rail 2 is assembled directly with other members of the linear drive module L at the factory by a design in which the fixing portion 222 (or 222a) is directly provided on the side wall 22 (22a) of the linear rail 2 (2a). After the packaging is completed and transported, the linear drive module L can be directly clamped and positioned directly on the external structure or workbench, and the subsequent assembly work can be performed directly. No work is required. Therefore, it is possible to reduce the manufacturing cost, reduce the assembling and transporting operations and time, and improve the assembling accuracy and stability between the linear drive module L and the external structure at the same time. In addition, the operating range of the tightening position of the fixing portion 222 (222a) is larger than the reciprocating path of the slider 4, the ability of the linear rail 2 (2a) to resist the impact of the slider 4 is increased, and the stability of system operation is improved. At the same time, the assembly strength of the entire system can be increased.

  In the following, in order to describe in more detail the ability of the conventional linear rail and the linear rail of the present invention to resist the impact of the slider, please refer to FIGS. 7A and 7B simultaneously. 7A is a schematic cross-sectional view of the impact force-drag relationship in the conventional linear rail 9 shown in FIG. 1, and FIG. 7B is a schematic cross-sectional view of the impact force-drag relationship in the linear rail 2 shown in FIG. 3A. In order to keep the drawing simple and to facilitate the explanation of the present invention, only the cross section on one side is shown in FIGS. 7A and 7B to clarify the impact force-drag force relationship, and the impact in FIGS. 7A and 7B. The forces F3, F3 ′ and the drag forces F4, F4 ′ depict the horizontal component force on one side and show this, and the position where the impact force or drag force is generated is the action point C3, C3 ′ of the screw S in the rail groove and the fixing part. , C4, and C4 ′ are drawn to show this, that is, the position vectors r3, r3 ′, r4, and r4 ′ in the drawing are oriented.

  In the conventional linear rail 9 shown in FIG. 7A, when a slider (not shown) hits the rail groove 921 on one side, an impact force F3 as a horizontal horizontal force is generated at the point C3 of the rail groove. At the same time, with the intersection of the center line of the linear rail 9 and the bottom plate 91 as a fulcrum P, the impact force F3 and the position vector r3 jointly generate a unidirectional impact force moment. Similarly, when an impact occurs in the rail groove 921, a drag force F4 as a horizontal horizontal force is generated at the action point C4 of the screw hole 911, and the drag force F4 and the position vector r4 jointly rotate the fulcrum P. At the center, a drag moment in the opposite direction to the impact force moment is generated. Since the screw hole 911 is provided on the bottom plate 91 of the linear rail 9, the position vector r4 of the drag moment is set to be less than the position vector r3 of the impact force moment. However, the screw S has a drag force F4 larger than the impact force F3. If this does not occur, the effect of the moment of impact force cannot be balanced. Therefore, if the tightening ability between the screw S and the screw hole 911 cannot support the moment of impact force generated by the rail groove 921 receiving the impact force, the screw S loosens and falls off, and the rail groove 921 moves. End up.

  Still referring to the linear rail 2 of the present invention shown in FIG. 7B, when the slider 4 (not shown) hits the rail groove 221 on one side, the acting point C3 ′ of the rail groove is applied as a horizontal horizontal force. The impact force F3 ′ is generated, and the impact force F3 ′ and the position vector r3 ′ jointly generate an impact force moment in one direction with the intersection point of the center line of the linear rail 2 and the bottom plate 21 as a fulcrum P ′. . Similarly, when an impact is generated in the rail groove 221, a drag force F 4 ′ as a horizontal horizontal component is generated at the action point C 4 ′ of the screw S in the fixing portion 222, and the drag force F 4 ′ and the position vector r 4 ′ Jointly generate a drag moment in the opposite direction to the impact force moment with the fulcrum P ′ as the center of rotation. Since the fixed portion 222 of the linear rail 2 in this embodiment is provided on the side wall 22 and the operating range of the tightening position of the fixed portion 222 is larger than the reciprocating path of the slider 4, the position vector r4 ′ of the drag moment is the impact force. Since the moment S is larger than the position vector r3 ′, a smaller drag F4 ′ is generated in the screw S, and the influence of the moment of impact force can be balanced, and the linear rail 2 can resist the impact of the slider 4. As a result, the stability of system operation is improved and the assembly strength of the entire system can be increased.

  Please refer to FIGS. 4A to 4C at the same time. 4A is a three-dimensional schematic view of a linear rail according to another embodiment of the present invention, FIG. 4B is a schematic cross-sectional view taken along the line CC of the linear rail shown in FIG. 4A, and FIG. FIG. 7 is a schematic cross-sectional view of another embodiment of the linear rail shown, in which only the different aspects of the linear rail and its fixing portion are omitted, omitting the drawing of the external structure and screws and positioning protrusions, in order to simplify the drawing. Illustrated.

  In the present embodiment, the linear rail 2b has a bottom plate 21b and a plurality of (in the illustrated example, two) side walls 22b, and the plurality of side walls 22b are provided on both sides of the bottom plate 21b, respectively. The side wall 22b and the bottom plate 21b define an accommodation space SP1. The plurality of side walls 22b have at least one rail groove 221b and at least one fixing portion 222b, respectively, and the plurality of rail grooves 221b are provided to face each other, and each fixing portion 222b has a side wall 22b. Are provided respectively. Of these, the side wall 22b further has a first surface 223b and a second surface 224b (FIGS. 4B and 4C). The second surface 224b is connected to the bottom plate 21b, and the first surface 223b and the second surface 224b are connected to each other. A surface 224b is provided correspondingly. Among these, each of the plurality of side walls 22b further has a step-like structure 225b, and the step-like structure 225b is provided on the first surface 223b and includes a step-like structure 225b including the first surface 223b. It has become.

  As shown in FIG. 4B, the fixing portion 222b has a through-hole structure O3, and the through-hole structure O3 penetrates the first surface 223b and the second surface 224b. By extending from one step surface of the step-like structure 225b (corresponding to the first surface 223b; the same applies hereinafter) to the second surface 224b, the through-hole structure O3 has one step surface and the second step surface of the step-like structure 225b. 2 through the surface 224b. Among these, the fixing portion 222b is a screw hole or an opening, and the shape of the opening in the radial direction can be a circle, a polygon or an irregular shape (not shown). When the fixing portion 222b is a screw hole, the screw is passed through one step surface and the second surface 224b of the step-like structure 225b of the side wall 22b, and further connected to the screw hole of the external structure, The external structure can be tightened. When the fixing portion 222b is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is passed through one step surface of the step-like structure 225b of the side wall 22b and the fixing portion 222b of the second surface 224b. The linear rail 2b and the external structure can be coupled by performing an interference fit and then an interference fit with the opening of the external structure. At this time, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted to each other, so that the positioning protrusion and the opening can be more firmly coupled. In this embodiment, the design in which the fixing portion 222b is provided on the step-like structure 225b improves the assembly flexibility of the linear rail 2b, and at the same time, the assembly strength between the linear rail 2b and the external structure can be greatly improved. .

  Further, as shown in FIG. 4C, the fixing portion 222c can be designed as a blind hole structure O4 according to the assembly design of the linear rail 2c and the external structure, and the blind hole structure O4 is an external structure. Extends from the second surface 224c adjacent to the stepped structure 225c to one stepped surface (corresponding to the first surface 223c; the same applies hereinafter), but exceeds one stepped surface of the stepped structure 225c. There is no. Among these, the fixing | fixed part 222c is a screw hole or opening, and the shape of the radial direction cross section of opening can be circular, a polygonal shape, or an irregular shape (not shown). When the fixing portion 222c is a screw hole, the screw is passed through the screw hole of the external structure and further screwed into the blind hole structure O4 of the second surface 224c, and the linear rail 2c and the external structure are tightly coupled. Can do. In addition, when the fixing portion 222c is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is fitted into the opening of the external structure, and then further fixed to the fixing portion 222c of the second surface 224c of the side wall 22c. The linear rail 2c and the external structure can be coupled by entering and generating an interference fit. At this time, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted to each other, so that the positioning protrusion and the opening can be more firmly coupled.

  Please refer to FIGS. 5A to 5C at the same time. 5A is a three-dimensional schematic view of a linear rail according to another embodiment of the present invention, FIG. 5B is a schematic cross-sectional view taken along the line DD of the linear rail shown in FIG. 5A, and FIG. FIG. 7 is a schematic cross-sectional view of another embodiment of the linear rail shown, in which only the different aspects of the linear rail and its fixing portion are omitted, omitting the drawing of the external structure and screws and positioning protrusions, in order to simplify the drawing. Illustrated.

  In the present embodiment, the linear rail 2d has a bottom plate 21d and a plurality of (two in the illustrated example) side walls 22d, and the plurality of side walls 22d are provided on both sides of the bottom plate 21d, respectively. An accommodation space SP2 is defined by the side wall 22d and the bottom plate 21d. The plurality of side walls 22d have at least one rail groove 221d and at least one fixing portion 222d, respectively, and the plurality of rail grooves 221d are provided to face each other, and each fixing portion 222d is provided on the side wall 22. Are provided respectively. Of these, the side wall 22d further has a first surface 223d and a second surface 224d. The second surface 224d is connected to the bottom plate 21d, and the first surface 223d and the second surface 224d correspond to each other. Is provided. Among these, each of the plurality of side walls 22d further has a step-like structure 225d, and the step-like structure 225d is provided on the first surface 223d and includes a step-like structure 225d including the first surface 223d. It has become. Further, the installation mode of the step-like structure 225d of this embodiment is different from the step-like structures 225b and 225c of FIGS. 4A to 4C.

  As shown in FIG. 5B, the fixing portion 222d has a through-hole structure O5, and the through-hole structure O5 passes through the first surface 223d and the second surface 224d. By extending from one step surface of the step-like structure 225d (corresponding to the first surface 223d, the same applies hereinafter) to the second surface 224d, the through-hole structure O5 has one step surface and the second step surface of the step-like structure 225d. 2 surface 224d. Among these, the fixing portion 222d is a screw hole or an opening, and the shape of the opening in the radial direction can be a circle, a polygon, or an irregular shape (not shown). When the fixing portion 222d is a screw hole, the screw is passed through one step surface of the step-like structure 225d and the second surface 224d of the side wall 22d, and further connected to the screw hole of the external structure, The external structure can be tightened. Further, when the fixing portion 222d is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is passed through one step surface of the step-like structure 225d of the side wall 22d and the fixing portion 222d of the second surface 224d. The linear rail 2d and the external structure can be coupled by performing an interference fit and then an interference fit with the opening of the external structure. At this time, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted to each other, so that the positioning protrusion and the opening can be more firmly coupled.

  Further, as shown in FIG. 5C, the fixing portion 222e can be designed as a blind hole structure O6 according to the assembly design of the linear rail 2e and the external structure, and the blind hole structure O6 is an external structure. Extends from the second surface 224e adjacent to the stepped structure 225e toward one stepped surface of the stepped structure 225e (corresponding to the first surface 223e; the same applies hereinafter), but exceeds one stepped surface of the stepped structure 225e. There is no. Among these, the fixing portion 222e is a screw hole or an opening, and the shape of the opening in the radial direction can be a circle, a polygon, or an irregular shape (not shown). When the fixing portion 222e is a screw hole, the screw is passed through the screw hole of the external structure and further screwed into the blind hole structure O6 of the second surface 224e, and the linear rail 2e and the external structure are tightly coupled. Can do. Further, when the fixing portion 222e is an opening, a positioning protrusion having the same shape as the radial cross section of the opening is fitted into the opening of the external structure, and then the fixing portion 222e is further fixed to the fixing portion 222e of the second surface 224e of the side wall 22e. The linear rail 2e and the external structure can be coupled by entering and generating an interference fit. Among these, after the opening is filled with the welding agent, the positioning protrusion and the opening can be further fitted together to more firmly connect the positioning protrusion and the opening.

  When the step-like structures 225d and 225e are designed in this embodiment, when the slider (not shown) reciprocates linearly, it is protected from interference with external members around the linear rail. Can be ensured.

  Please refer to FIG. 2A, FIG. 2B, FIG. 6A and FIG. 6B simultaneously. 6A is a schematic diagram of the assembly of the end blocks 7 and 8, the bearing 6 and the screw rod 3 in the present invention, and FIG. 6B is the end block 7 and 8, the coupling 11, the driving means 1 and the screw in the present invention. FIG. 3 is an assembly schematic diagram of a rod 3.

  The linear drive module L further includes a bearing 6 (FIG. 6A), and the driving means 1 (FIG. 6B) further includes a coupling 11 and a convex shaft 12, and one end of the convex shaft 12 has a fitting hole 121. doing. The coupling 11 has a base portion 111 and a plurality of (two in the illustrated example) sandwiching portions 112 and 113, one end of the base portion 111 is coupled to the driving means 1, and the convex shaft 12 is placed in the base portion 111. The other end of the base 111 is coupled to the plurality of sandwiching portions 112 and 113, and the plurality of sandwiching portions 112 and 113 are provided to face each other.

  Both ends of the screw rod 3 are respectively a first end 31 (FIG. 6B) and a second end 32 (FIG. 6A). In this case, the first end 31 has a fitting portion 311 (FIG. 6B). And the first end 31 of the screw rod 3 is inserted through the base 111 of the coupling 11 and the plurality of holding portions 112 and 113, and is fitted on the first end 31. The part 311 is fitted in the fitting hole 121 of the convex shaft 12 of the driving means 1. Further, the second end portion 32 (FIG. 6A) of the screw rod 3 is fitted into the bearing inner ring hole 61 of the bearing 6. In this case, the linear drive module L further includes two end blocks 7 and 8 respectively provided at the two ends of the linear rail 2, and one of the end blocks 7 is for mounting the bearing 6. The bearing receiving hole 71 and the bearing 6 are attached to each other by an interference fit. Among these, the design of the bearing receiving hole 71 and the bearing 6 is the linear rail 2. In addition to absorbing the assembly intersection between the screw block 3 and the end block 7, the straightness after the assembly of the screw rod 3 can be calibrated. The other end block 8 has a first coupling receiving hole 81 for mounting the coupling 11, and the plurality of sandwiching portions 112, 113 of the coupling 11 are the first coupling receiving hole 81. Is provided. The fixed base F has a second coupling accommodation hole F1, and the base 111 and the driving means 1 of the coupling 11 are provided in the second coupling accommodation hole F1. The drive means 1 is provided in the second coupling accommodation hole F1, and the end blocks 7 and 8, the bearing 6 and the coupling 11 jointly hold both ends of the screw rod 3, whereby the accommodation space SP of the linear rail 2 is accommodated. A screw rod 3 is installed therein, the rotation of the driving means 1 is transmitted to the screw rod 3 through the coupling 11, the screw rod 3 is rotated, and the slider 4 is linearly reciprocated along the linear rail 2. Let

  Among these, the base 111 of the coupling 11 and the two clamping portions 112 and 113 form a stepped columnar structure, and the center of the coupling 11 is a circular hole for clamping one end of the screw rod 3. ing. The space of the circular hole between the two clamping parts 112 and 113 can be adjusted according to the size of the diameter of the first end 31 of the screw rod 3, and the plurality of clamping parts 112 and 113 are At least one screw-through hole 1121, 1131 is provided, the plurality of screw-through holes 1121, 1131 are provided corresponding to each other, and the plurality of sandwiching portions 112, 113 are provided with at least one bolt or screw S. Is inserted into the plurality of screw holes 1121 and 1131, and the plurality of sandwiching portions 112 and 113 are brought into contact with the ends of the screw rod 3 and tightened. The coupling 11 in the present embodiment is attached to the end portions of various screw rods 3 having different diameter sizes, and fixes the screw rod 3 between the plurality of sandwiching portions 112 and 113, and via the coupling 11. Rotate synchronously.

  To summarize the above, the linear drive module of the present invention has its fixed part directly provided on the side wall of the linear rail. Therefore, the linear rail is directly assembled with other members of the linear drive module at the factory. Can be manufactured and assembled as a complete linear drive module directly in the factory. After the packaging is completed and transported, the subsequent assembly work can be performed directly by simply tightening and positioning the linear drive module on the external structure or workbench, and the linear drive module can be moved to another external structure or work. Even if it is desired to replace the table, it is only necessary to perform the replacement operation directly, eliminating the need for extra disassembly, assembly and transportation. Therefore, it is possible to reduce the manufacturing cost, reduce the assembling and transporting operations and time, and improve the assembling accuracy and stability between the linear drive module and the external structure at the same time.

  In the manufacturing process, the tightening position of the fixed part has a completely flat structure, so when the linear rail is tightened with a screw in the screw hole, the screw hole becomes slanted due to the position of the fixed part. Therefore, the manufacturing process can be optimized to improve the assembly accuracy and stability between the linear rail and the external structure.

  In addition to this, according to the assembly design of the linear rail and the external structure, the fixing portion is designed as a through hole structure or a blind hole structure, and the plurality of side walls are further designed to have a stepped structure. By providing the fixed part in the stepped structure, the assembly stability between the linear rail and the external structure can be greatly improved, and at the same time, the linear rail assembly flexibility can be increased. When moving, it can protect so that it may not interfere with the external member around a linear rail.

  When the system is in operation, the tightening position of each fixed part is on the side wall of the linear rail, so the operating range of the tightening position is larger than the reciprocating path of the slider, increasing the ability of the linear rail to resist the impact of the slider. The stability of system operation can be greatly improved, and the assembly strength of the entire system can be increased.

  The above is merely an example and does not limit the present invention. Any equivalent modifications or changes made thereto without departing from the technical spirit and scope of the present invention shall be included in the scope of claims for utility model registration.

With the above configuration, the present invention enables the linear rail to be directly assembled with other members of the linear drive module at the factory, and after the assembly is completed in the factory, the subsequent transportation work can be performed directly. A linear drive module is provided which eliminates the need for extra disassembly, assembly and transport operations. As a result, it is possible to reduce the manufacturing cost, reduce the assembling and transporting operations and time, and at the same time improve the assembling accuracy and stability of the linear drive module and the external structure.

DESCRIPTION OF SYMBOLS 1 Driving means 11 Coupling 12 Convex shaft 121 Fitting hole 111 Base part 112, 113 Holding part 1121, 1131 Screw through hole 2, 2a, 2b, 2c, 2d, 2e, 9 Linear rail 21, 21b, 21d, 91 Bottom plate 22 , 22a, 22b, 22c, 22d, 22e, 92 Side wall 221, 221a, 221b, 221c, 221d, 221e, 921 Rail groove 222, 222a, 222b, 222c, 222d, 222e Fixing part 223, 223a, 223b, 223c, 223d 223e first surface 224, 224a, 224b, 224c, 224d, 224e second surface 225b, 225c, 225d, 225e stepped structure 3 screw rod 31 first end 311 fitting portion 32 second end 4 Slider 41 Slider body 41 Outer circulation groove 412 Circulation path 42 End cover 5 Steel ball 6 Bearing 61 Bearing inner ring hole 7, 8 End block 71 Bearing accommodation hole 81 First coupling accommodation hole 911 Screw hole AA, BB, CC, DD, EE Cutting line C3, C3 ′, C4, C4 ′ Action point F Fixed base F1 Second coupling receiving hole F3, F3 ′ Impact force F4, F4 ′ Drag L Linear drive module O1, O3, O5 Through hole structure O2, O4, O6 Blind hole structure P, P 'fulcrum P1 Outer circulation passage r3, r3', r4, r4 'Position vector S Screw SP, SP1, SP2 Accommodating space

Claims (10)

Driving means;
A bottom plate and a plurality of side walls provided on both sides of the bottom plate, wherein the plurality of side walls and the bottom plate define an accommodation space, and each of the plurality of side walls includes at least one rail groove. A linear rail, wherein the plurality of rail grooves are provided opposite to each other, and each of the fixing portions is provided on a side wall,
A screw rod provided in the housing space and parallel to the linear rail, one end of which is coupled to the driving means;
It is slid in the accommodating space, the screw rod is penetrated, and has a slider main body and a plurality of end covers, and the plurality of end covers are provided at two ends of the slider main body. Each provided slider,
A linear drive module comprising:   The linear drive module according to claim 1, wherein each of the plurality of side walls further has a stepped structure.   The linear drive module according to claim 1, wherein the fixing portion has a through-hole structure.   The linear drive module according to claim 1, wherein the fixing portion has a blind hole structure.   The linear drive module according to claim 1, wherein the fixing portion is a screw hole or an opening.   The linear drive module according to claim 5, wherein a shape of a radial cross section of the opening is a circular shape, a polygonal shape, or an irregular shape.   The linear drive module further includes a bearing, the driving means further includes a coupling, the coupling includes a base portion and a plurality of clamping portions, and one end of the base portion is coupled to the driving means. And the other end of the base portion is coupled to the plurality of clamping portions, the plurality of clamping portions are provided to face each other, and one end of the screw rod is provided to penetrate the base portion and the plurality of clamping portions The linear drive module according to claim 1, wherein the linear drive module is coupled to a portion and the other end of the screw rod is coupled to the bearing.   The linear drive module according to claim 7, wherein the plurality of sandwiching portions have at least one screw-through hole, and the plurality of screw-through holes are provided to correspond to each other.   The linear drive module further includes two end blocks respectively provided at two ends of the linear rail, and one end block has a bearing receiving hole, and the other end block has the other end block. The linear drive module according to claim 8, which has a first coupling receiving hole.   The linear drive module further includes a plurality of steel balls, and has a plurality of outer circulation grooves corresponding to the plurality of rail grooves on the outer side of the slider body, and the plurality of outer circulation grooves and the plurality of the plurality of outer circulation grooves. The rail grooves together form a plurality of outer circulation passages, and both sides of the slider body have a plurality of circulation passages corresponding to the plurality of outer circulation passages. The linear drive module according to claim 1, which is accommodated in the plurality of outer circulation paths and the plurality of circulation paths.

Images