Integrated nut and lead screw device

Abstract

The utility model discloses an integrated nut and lead screw device which comprises an upper plate, a lower plate, a guide rail mounting plate, a crossed roller guide rail side rail, a bearing seat, a lead screw and an integrated nut. The lead screw and the integrated nut are combined into a lead screw nut pair; the lower plate is fixed on a working table, and the guide rail mounting plate and the bearing seat are locked and fixed on the lower plate; the crossed roller guide rail side rail is arranged on the guide rail mounting plate, the lead screw nut pair is connected with the crossed roller guide rail side rail, and the driving end of the lead screw nut pair penetrates through the bearing seat to be connected with an external driving unit; the upper plate is connected to the upper side of the integrated nut and used for bearing a product. The lead screw nut pair is connected with the crossed roller guide rail structure, load weight is transmitted to the crossed roller guide rail, and the problem that in an existing nut lead screw device, connection between a nut and a linear motion element is complex is solved.

Description

Technical Field

[0001] The utility model relates to the field of ball screw transmission or cross roller guide transmission or screw nut transmission, and in particular to an integrated nut screw device. Background Art

[0002] The nut screw device is the most commonly used transmission element in engineering machinery and precision machinery. The transmission principle of the nut screw device is: when working, the nut is indirectly or directly connected to the parts that need to make linear reciprocating motion, and the screw rotates to drive the nut to make linear reciprocating motion, thereby driving the parts to make linear reciprocating motion. The nut screw device is widely used in various industrial equipment and precision instruments. The existing nut screw device has the following problems:

[0003] 1. The connection between the nut and the linear motion element in the existing nut-screw device is complicated, and maintenance and installation are inconvenient;

[0004] 2. The existing nut and screw device has relatively low precision, and the rationality of the device affects the smoothness and running accuracy;

[0005] 3. The existing nut screw device is not rigid enough and is prone to jamming and deformation when subjected to heavy loads, affecting smoothness and accuracy;

[0006] In view of the above problems, it is urgently necessary to improve the original nut screw device. Summary of the invention

[0007] The utility model overcomes the deficiencies of the prior art and provides an integrated nut-screw device, which solves the problems of complex connection between the nut and the linear motion element, inconvenient maintenance and installation, insufficient rigidity, low load and low precision in the prior nut-screw device.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an integrated nut and screw device, comprising: an upper plate, a lower plate, a guide rail mounting plate, a cross-roller guide side rail, a bearing seat, a screw and an integrated nut; the screw and the integrated nut are combined into a screw nut pair; the lower plate is fixed to the work table, and the guide rail mounting plate and the bearing seat are locked to the lower plate; the cross-roller guide side rail is arranged on the guide rail mounting plate, the screw nut pair is connected to the cross-roller guide side rail, and the driving end of the screw nut pair passes through the bearing seat and is connected to the external drive unit; the upper plate is connected to the upper side of the integrated nut for carrying the product.

[0009] In a preferred embodiment of the utility model, the outer diameter of the screw rod and the interior of the integrated nut are both processed with precision threads, and the screw rod and nut pair are combined through the threads.

[0010] In a preferred embodiment of the utility model, a mounting groove is provided on the guide rail mounting plate for accommodating the cross roller guide rail side rail and the integrated nut.

[0011] In a preferred embodiment of the utility model, a V-shaped groove is provided on the side surface of the integrated nut for assembly with the side rail of the cross roller guide rail.

[0012] In a preferred embodiment of the present invention, the external driving unit is a servo motor or a stepping motor.

[0013] The utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0014] The utility model discloses a screw nut pair connected with the cross roller guide structure to transfer the load weight to the cross roller guide, thereby achieving the purpose of high rigidity and large load; the one-piece nut is processed with a V-groove structure and is directly assembled with the side rail of the cross roller guide, so that the one-piece nut has both the transmission function of the traditional screw nut and the linear motion function of the middle rail of the cross roller guide, cancels the middle rail transfer of the cross roller guide, eliminates the processing error and assembly error of the parts transfer, and achieves the characteristics of high precision, simple installation and maintenance, and cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 3 This is a side view of the structure of the utility model;

[0019] In the figure: 1. upper plate; 2. lower plate; 3. guide rail mounting plate; 4. cross roller guide side rails; 5. bearing seat; 6. lead screw; 7. integrated nut; 8. drive end. DETAILED DESCRIPTION

[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the configuration related to the present invention. In addition, in the description of the present invention, reference to "embodiment", "one embodiment" or "other embodiments" indicates that specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments.

[0021] like Figure 1 , Figure 2 and Figure 3 An integrated nut screw device is shown: the lower plate 2 is fixed to the table used on site, and the guide rail mounting plate 3 and the bearing seat 5 are locked to the lower plate 2. The screw rod 6 and the integrated nut 7 are assembled into a screw rod 6 nut pair through precision assembly, and the cross roller guide rail side rail 4 is locked to the guide rail mounting plate 3. The screw rod 6 nut pair is precisely assembled with the cross roller guide rail side rail 4, and the driving end 8 of the screw rod 6 nut pair passes through the bearing seat 5 and is connected to the driving unit.

[0022] The screw rod 6 nut pair is connected to the cross roller guide structure to transfer the load weight to the cross roller guide, achieving high rigidity and large load. The integrated nut 7 is processed with a V-groove structure and directly assembled with the cross roller guide side rail 4, so that the integrated nut 7 has both the transmission function of the traditional screw rod 6 nut and the linear motion function of the cross roller guide middle rail. The cross roller guide middle rail transfer is cancelled, eliminating the processing error and assembly error of the parts transfer.

[0023] Preferably, the connection between the lower plate 2 and the guide rail mounting plate 3, and the connection between the lower plate 2 and the bearing seat 5 are both connected by welding.

[0024] In some embodiments, a rubber layer is laid on the upper plane of the upper plate to increase the friction between the upper plate and the supporting product. In other embodiments, a hardware workpiece fixing structure is provided on the upper plane of the upper plate.

[0025] When using the integrated nut 7 screw rod 6 device, according to Figure 1-3 As shown, the product is locked on the upper plate 1, and the driving unit is connected to the driving end 8 of the device. The driving unit is enabled to drive the screw rod 6 to rotate. The rotation of the screw rod 6 drives the nut to perform linear reciprocating motion, thereby driving the product to perform linear reciprocating motion. The overall structural design embodies the characteristics of high rigidity, large load, high precision, and easy maintenance and installation.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An integrated nut and screw device, It is characterized in that include: Upper plate, lower plate, guide rail mounting plate, cross roller guide side rails, bearing housing, lead screw and integrated nut; The screw rod and the integrated nut are combined into a screw rod and nut pair; The lower plate is fixed to the work surface, and the guide rail mounting plate and the bearing seat are locked to the lower plate; The cross roller guide rail side rail is arranged on the guide rail mounting plate, the screw rod nut pair is connected to the cross roller guide rail side rail, and the driving end of the screw rod nut pair passes through the bearing seat and is connected to the external driving unit; The upper plate is connected to the upper side of the integrated nut and is used to carry products.

2. An integrated nut-screw device according to claim 1, Features: The outer diameter of the screw rod and the interior of the integrated nut are both processed with precision threads, and the screw rod and nut pair are combined through the threads.

3. The integrated nut-screw device according to claim 1, Features: The guide rail mounting plate is provided with a mounting groove for accommodating the cross roller guide rail side rail and the integrated nut.

4. The integrated nut-screw device according to claim 1, Features: A V-shaped groove is provided on the side of the integrated nut for assembly with the cross roller guide rail side rail.

5. The integrated nut-screw device according to claim 1, Features: The external drive unit shown is a servo motor or a stepper motor.

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