Guide rail sliding block transmission pair stable in transmission, machine tool stand column and machine tool base

Abstract

The utility model discloses a guide rail sliding block transmission pair with stable transmission, a machine tool stand column and a machine tool base, the guide rail sliding block transmission pair comprises a guide rail and a sliding block which are matched, the guide rail is provided with a sliding groove which obliquely extends towards the upper end portion of the guide rail, protrusions matched with the sliding groove are formed on the sliding block, and the two protrusions and the sliding block are integrally formed. According to the utility model, the upward inclined chutes are arranged on the two opposite sides of the guide rail, the matched bulges are arranged on the slide block, and the slide block and the guide rail can be buckled together to form an integral structure by the two chutes and the upper end part and the two side walls of the guide rail, so that the jumping of the slide block on the guide rail is avoided or reduced; the purpose of ensuring stable operation of the workpiece or the main shaft assembly is achieved; the ratio of the width of the guide rail to the depth of the sliding groove is set to be 9: 1 to 5: 1, so that the overall rigidity of the guide rail is not affected while the guide rail is tightly held by the sliding block.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, in particular to a guide rail and slider transmission pair with stable transmission, a machine tool column and a machine tool base. Background Art

[0002] There are many factors that affect the spindle machining accuracy on machining equipment, and the relative position accuracy between the spindle and the workpiece during machining is an important factor. At present, machining equipment generally adopts a structure in which a guide rail and slider transmission pair cooperates with a lead screw and nut transmission pair to drive the spindle box to translate on the column or drive the worktable to translate on the base. In actual production, the accumulated errors caused by the machining and assembly accuracy of components such as nuts, sliders and guide rails or the entry of foreign matter will cause the slider to jump slightly up and down during the translation process, that is, the slider cannot always fit completely on the guide rail, affecting the machining accuracy. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a guide rail and slider transmission pair with smooth transmission, a machine tool column, and a machine tool base. The guide rail can tightly connect the slider with it to form an integral structure, thereby avoiding or reducing the jumping of the slider on the guide rail, thereby ensuring the smooth operation of the workpiece or spindle assembly without affecting the overall rigidity of the guide rail.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A guide rail and slider transmission pair with smooth transmission comprises a matching guide rail and a slider, wherein the bottom of the slider is a U-shaped structure, and its inner wall is respectively abutted against the upper end and two opposite side walls of the guide rail; symmetrically formed on the two opposite side walls of the guide rail are slide grooves extending obliquely toward the upper end thereof, and protrusions that can be matched with the slide grooves are formed on the two opposite inner walls of the bottom of the slider, and the two protrusions are integrally formed with the slider.

[0006] As a further elaboration of the above technical solution:

[0007] In the above technical solution, the ratio of the width of the guide rail to the depth of each of the slide grooves is between 9:1 and 5:1.

[0008] Another technical solution adopted by the utility model is as follows: a machine tool column with smooth transmission, including a vertically arranged column body, a vertical side wall of the column body is provided with the guide rail and slider transmission pair described in the above embodiment; the guide rail is vertically arranged, and two or more sliders are provided thereon.

[0009] Another technical solution adopted by the utility model is as follows: a machine tool base with smooth transmission, including a horizontally arranged base body, the upper end of the base body is provided with the guide rail and slider transmission pair described in the above embodiment; the guide rail is horizontally arranged, and two or more sliders are provided thereon.

[0010] In the above technical solution, a slideway extending in the same direction as the guide rail is provided on the side thereof, and a grating ruler is installed in the slideway. The grating ruler can detect the moving distance of one or more sliders on the guide rail.

[0011] In the above technical solution, the width of the upper end of the guide rail is greater than or equal to 45 mm.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging upwardly inclined slide grooves on two opposite sides of the guide rail and arranging matching protrusions on the slider, the two slide grooves and the upper ends of the guide rail and the two side walls can buckle the slider and the guide rail together to form an integral structure, thereby avoiding or reducing the jumping of the slider on the guide rail, thereby achieving the purpose of ensuring the smooth operation of the workpiece or the spindle assembly; by setting the ratio of the guide rail width to the slide groove depth to between 9:1 and 5:1, the overall rigidity of the guide rail can be maintained without affecting the rigidity of the slider while holding the guide rail tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the cross section of this embodiment;

[0014] Figure 2 Schematic diagram of the cross-sectional structure of the guide rail in this embodiment;

[0015] Figure 3 It is a structural schematic diagram of a column in one embodiment of the utility model (the slider is not shown);

[0016] Figure 4 It is a structural schematic diagram of a base in one embodiment of the utility model (the slider is not shown).

[0017] In the figure: 10, guide rail; 11, slide groove; 20, slider; 21, protrusion; 30, column body; 40, base body; 50, slideway; D, width of the upper end of the guide rail; d, depth of the slide groove. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] like Figure 1-2 As shown, a guide rail and slider transmission pair with smooth transmission includes a matching guide rail 10 and a slider 20. The bottom of the slider 10 is a U-shaped structure, and its inner wall is respectively abutted against the upper end and two opposite side walls of the guide rail 10; the two opposite side walls of the guide rail 10 are symmetrically formed with slide grooves 11 extending obliquely toward the upper end thereof, and the two opposite inner walls at the bottom of the slider 20 are both formed with protrusions 21 that can adapt to the slide grooves 11, and the two protrusions 21 are both integrally formed with the slider 20.

[0021] Furthermore, the ratio of the width of the guide rail 10 to the depth of each slide groove 11 is between 9:1 and 5:1.

[0022] It is understandable that a certain depth of the slide groove 11 can ensure the stability of the slider 20 embedded thereon without affecting the overall rigidity of the guide rail 10. In this embodiment, the width D of the upper end of the guide rail 10 is 45 mm, and the depth d of the slide grooves on both sides thereof is 7.5 mm.

[0023] In application, in order to ensure that the slider 20 can completely match and fit the upper end of the guide rail 10, the distance between the two protrusions 21 should be slightly larger than the distance between the two slide grooves 11, and the outline size of each protrusion 21 should be slightly smaller than the outline size of the slide groove 11, and the distance between each protrusion 21 and the bottom of the inner wall of the slider 20 is equal to and slightly larger than the distance between the slide groove 11 and the top of the guide rail 10; for ease of assembly, the slide groove 11 and the protrusion 21 and the inner wall groove should be provided with appropriate fillets. The specific assembly and matching relationship between the two is common knowledge of those skilled in the art, and their specific sizes and relationships are not described here.

[0024] During assembly, the slider 20 is inserted from one end of the guide rail 10, and the protrusion 21 is embedded in the slide groove 11. The two slide grooves 11 and the upper end and two side walls of the guide rail 10 can buckle the slider 20 and the guide rail 10 together to form an integral structure, thereby preventing or reducing the slider 20 from jumping on the guide rail 10. During operation, the workpiece or the spindle assembly is fixed on the slider 20, and the driving device drives the slider 20 to slide smoothly along the guide rail 10, thereby ensuring the smooth operation of the workpiece or the spindle assembly.

[0025] like Figure 3 As shown, in an application embodiment of the utility model, a machine tool column with stable transmission includes a vertically arranged column body 30, and a guide rail and slider transmission pair in the above embodiment is arranged on a vertical side wall of the column body 30; the guide rail 10 is arranged vertically, and two or more sliders 20 are arranged thereon.

[0026] like Figure 4 As shown, in another application embodiment of the utility model, a machine tool base with stable transmission includes a horizontally arranged base body 40, and the upper end of the base body 40 is provided with the guide rail slider transmission pair in the above embodiment; the guide rail 10 is horizontally arranged, and two or more sliders 20 are provided thereon.

[0027] In the above two application embodiments, a slideway 50 extending in the same direction as the guide rail 10 is provided on the side thereof, and a grating ruler is installed in the slideway 50 . The grating ruler can detect the moving distance of one or more sliders 20 on the guide rail 10 .

[0028] In this embodiment, a position sensor is installed on the grating scale, which is electrically connected to the drive device so as to instruct the drive device to stop driving when approaching the target position, ensuring that the slider 20 maintains high-precision and smooth operation on the guide rail 10, reducing the wear between the two, and extending the service life of the transmission pair for smooth transmission.

[0029] In the above two application embodiments, the width D of the upper end of the guide rail 10 is greater than or equal to 45 mm.

[0030] The column and base of this embodiment are used in a vertical milling machine. The width of the guide rail 10 on a conventional vertical milling machine is generally 35 mm. In this embodiment, it is widened to 45 mm, thereby increasing the constraint area of ​​the guide rail 10 on the slider 20, improving the smoothness of the operation of the slider 20, and achieving the purpose of further improving the transmission stability.

[0031] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A guide rail and slider transmission pair with stable transmission, comprising a matching guide rail and a slider, wherein the bottom of the slider is a U-shaped structure, and the inner wall thereof is respectively abutted against the upper end and two opposite side walls of the guide rail; characterized in that: The two opposite side walls of the guide rail are symmetrically provided with slide grooves extending obliquely toward the upper end thereof, and the two opposite inner walls at the bottom of the slider are both provided with protrusions that can be adapted to the slide grooves, and the two protrusions are both integrally formed with the slider.

2. The guide rail and slider transmission pair with stable transmission according to claim 1 is characterized in that: The ratio of the width of the guide rail to the depth of each of the slide grooves is between 9:1 and 5:

1.

3. A machine tool column with stable transmission, comprising a vertically arranged column body; characterized in that: A guide rail and slider transmission pair as claimed in claim 1 is arranged on a vertical side wall of the column body; the guide rail is arranged vertically, and two or more sliders are arranged thereon.

4. A machine tool base with stable transmission, comprising a horizontally arranged base body; characterized in that: The upper end of the base body is provided with the guide rail and slider transmission pair as described in claim 1; the guide rail is arranged horizontally, and two or more sliders are arranged thereon.

5. The machine tool base according to claim 4, characterized in that: A slideway extending in the same direction as the guide rail is arranged beside the guide rail, and a grating ruler is installed in the slideway. The grating ruler can detect the moving distance of one or more sliders on the guide rail.

6. The machine tool base according to claim 5, characterized in that: The width of the upper end portion of the guide rail is greater than or equal to 45 mm.

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