Workbench transmission lead screw vertical auxiliary supporting mechanism

Abstract

The utility model discloses a vertical auxiliary supporting mechanism for a workbench transmission screw rod, which comprises a workbench, a screw rod, a ram seat and a supporting part, two ends of the screw rod are connected with the workbench through bearing seats, the upper part and the lower part of the ram seat are connected with a sliding rail of the workbench, and the middle part of the ram seat is connected with a sliding block of the screw rod; a jacking block is installed on the lower middle portion of the inner side, facing the workbench, of the ram base, the two sets of supporting components are arranged below the two sides of the middle of the lead screw respectively, and each supporting component comprises a supporting sleeve, a supporting base, a supporting plate and a supporting wheel. The supporting component is arranged between the workbench and the lead screw, the middle of the lead screw can be drooped, an extra power device is not needed, the transformation cost is low, the diameter of the lead screw is properly reduced under the condition that the length of the lead screw and the radial load of the lead screw are not changed, and the effect of saving the production cost is achieved. The utility model also has the characteristics of simple structure, convenience in disassembly and maintenance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool equipment parts, in particular to a vertical auxiliary support mechanism for a transmission screw rod of a workbench. Background Art

[0002] Screw drives are widely used in existing machine tools. Bearing seats are provided at both ends of the screw. The screw is driven by a motor. A slider is connected to the threaded part of the screw. The slider is provided with threads or balls that match the screw threads. At the same time, the machine tool moving parts are installed on the slider. When the drive motor drives the screw to rotate, the screw thread drives the slider to move along the screw axis, and the machine tool moving parts installed on the slider work.

[0003] The disadvantage of this device is that when the length of the screw must reach a certain length, there will be a certain amount of deformation and sagging in the middle of the screw due to its own gravity and the influence of the workload generated by the moving parts of the machine tool installed on the slider. This deformation will seriously affect the service life of the screw and the transmission accuracy.

[0004] At present, in order to ensure the accuracy of the screw rod, the diameter of the screw rod is generally increased, the strength of the screw rod is improved, and the deformation of the screw rod is reduced. However, this not only increases the material and processing costs of the screw rod, but also increases the weight of the entire equipment. Summary of the Invention

[0005] In order to solve the above problems, the utility model provides a vertical auxiliary support mechanism for a workbench transmission screw rod, which is simple in structure, low in cost and effectively solves the problem of excessive sagging deformation in the middle of the long screw rod.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a vertical auxiliary support mechanism for a workbench transmission screw, comprising a workbench, a screw, a slide seat and a support component, the two ends of the screw are connected to the workbench through a bearing seat, the upper and lower parts of the slide seat are connected to the slide rails of the workbench, and the middle part is connected to the slider of the screw, and a lifting block is installed on the middle and lower part of the inner side of the slide seat facing the workbench. The lifting block has an arc-shaped structure with a higher middle part and lower sides facing the end face of the screw, and the highest point of the arc surface is located below the connection between the slide seat and the screw slider. There are two groups of support components, which are respectively arranged below both sides of the middle part of the screw, and the support components include a support sleeve, a support seat, a support plate and a support wheel.

[0007] The support sleeve is located below the screw rod side, and its cylinder body is a hollow cylindrical structure with an open top surface. A reset spring is provided in the support sleeve, and the bottom of the reset spring is fixed to the inner bottom surface of the support sleeve. A reset disc is installed on the top. The reset disc is located in the support sleeve, and its outer diameter is the same as the inner diameter of the support sleeve. A connecting flange is installed on the top surface of the support sleeve, which is connected to the crossbeam of the workbench through the connecting flange. A mounting column is fixed on the bottom surface, and is connected and fixed to the inside of the workbench through the mounting column.

[0008] The support seat is located directly below the screw rod and opposite to the front of the support sleeve. The support seat is a rectangular block, and its top surface is an arc-shaped surface, so that the support seat forms an arch structure. The rear end surface of the support seat is connected to the reset disk in the support sleeve through a connecting column. Connecting screw holes are respectively provided at the midpoints of the left and right end surfaces. A threaded through hole that passes through the top surface is provided on the side of the bottom surface of the support seat close to the front end surface, and a retraction wheel is provided below the threaded through hole.

[0009] The diameter of the retraction wheel is larger than the bottom width of the support seat. A connecting screw is provided on the inner ring of the retraction wheel. The retraction wheel and the connecting screw are connected by a bearing. The retraction wheel is connected to the threaded through hole on the bottom of the support seat through the connecting screw, and the horizontal height of the retraction wheel is the same as the horizontal height of the lifting block in the middle and lower part of the ram seat.

[0010] There are two support plates, which are relatively arranged on the left and right end faces of the support seat. The support plates are inverted triangular structures, and each inner angle is chamfered. Support wheel connection holes are respectively provided on both sides of the midpoint of the upper end face, and positioning screw holes corresponding to the connecting screw holes on the left and right end faces of the support seat are provided on the lower part of the end face. The positioning screw holes are connected and fixed to the connecting screw holes of the support seat by screws.

[0011] There are two support wheels, which are arranged above the support seat and in contact with the rod body of the screw rod, and are located between the two support plates, corresponding to the support wheel connecting holes on the support plates respectively. The inner ring of the support wheel is provided with a bearing, and a support rod is installed in the bearing. External thread structures are provided on the circumference of both ends of the support rod. The support wheel is connected to the support wheel connecting hole of the support seat through the support rod, and the external threads at both ends of the support rod pass through the end surface of the support seat and are locked with the support seat through nuts.

[0012] As an optimization solution for this case, in order to prevent the support plate from shifting to both sides when the connecting bolts between the support plate and the support seat become loose, thereby affecting the support effect of the screw rod, limiting screw holes are installed above both sides of the connecting screw holes of the support seat, and limiting columns are respectively provided in each limiting screw hole, so that the lower part of the end face of the support block is located between the limiting columns on the same side.

[0013] As an optimization solution for this case, in order to improve the supporting effect, a supporting stud is provided below the outer peripheral surface of the connecting flange on the supporting sleeve, and the bottom end of the supporting stud rests on the crossbeam of the workbench.

[0014] Beneficial effects: The utility model sets a supporting component between the workbench and the screw rod, which can be used to make the middle of the screw rod droop, and does not require an additional power device. The modification cost is low. When the screw rod length and the radial load of the screw rod remain unchanged, the diameter of the screw rod can be appropriately reduced to achieve the effect of saving production costs. In addition, the utility model also has the characteristics of simple structure and easy disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the utility model when in use.

[0017] Figure 3 It is a structural schematic diagram of the supporting component in the utility model.

[0018] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Figure 5 This is a structural diagram of the support sleeve of the utility model.

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the support component in the present invention from an upward perspective.

[0021] In the figure: 1. Workbench; 2. Screw; 3. Slide seat; 4. Lifting block; 5. Support sleeve; 6. Connecting column; 7. Support seat; 8. Support plate; 9. Support wheel; 10. Reset spring; 11. Reset disc; 12. Mounting column; 13. Retraction wheel; 14. Limit column; 15. Support stud. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a specific component, respectively. The accompanying drawings are highly simplified and use non-precise ratios solely for the purpose of conveniently and clearly illustrating the embodiments of the present invention.

[0024] like Figure 1-5As shown, the utility model discloses a vertical auxiliary support mechanism for a workbench transmission screw, which is used to provide auxiliary support for the hanging part of the screw 2 on the workbench 1, and specifically includes a workbench 1, a screw 2, a slide seat 3 and a supporting component.

[0025] See also Figure 1 and Figure 2 The two ends of the screw rod 2 are connected to the workbench 1 through the bearing seat, the upper and lower parts of the slide seat 3 are connected to the slide rails of the workbench 1, and the middle part is connected to the slider of the screw rod 2. A lifting block 4 is installed on the middle and lower part of the inner side of the slide seat 3 facing the workbench 1. The lifting block 4 has an arc-shaped structure with a high middle and low sides facing the end face of the screw rod 2. The highest point of the arc surface is located below the connection between the slide seat 3 and the slider of the screw rod 2. There are two groups of supporting components, which are respectively arranged below both sides of the middle part of the screw rod 2. The supporting components include a supporting sleeve 5, a supporting seat 7, a supporting plate 8 and a support wheel 9.

[0026] from Figure 1 It can be seen that the support sleeve 5 is located below the screw rod 2, and its body is a hollow cylindrical structure with an open top surface. Figure 5 , a return spring 10 is provided in the support sleeve 5, the bottom of the return spring 10 is fixed to the inner bottom surface of the support sleeve 5, and a return disc 11 is installed on the top. The return disc 11 is located in the support sleeve 5, and its outer diameter is the same as the inner diameter of the support sleeve 5. The top surface of the support sleeve 5 is installed with a connecting flange, and is connected to the crossbeam of the workbench through the connecting flange. A mounting column 12 is fixed on the bottom surface, and is connected and fixed to the workbench 1 through the mounting column 12, from Figure 4 It can be seen that a support stud 15 is provided below the outer circumference of the telescopic connection flange. Figure 2 , the bottom end of the support stud 15 is against the beam of the workbench 1.

[0027] See also Figure 1 and Figure 3 The support seat 7 is located directly below the screw rod 2 and opposite to the front of the support sleeve 5. The support seat 7 is a rectangular block with an arc-shaped top surface, forming an arch structure. The rear end surface of the support seat 7 is connected to the reset disk 11 in the support sleeve 5 through the connecting column 6. The midpoints of the left and right end surfaces are respectively provided with connecting screw holes. The upper sides of the connecting screw holes are respectively provided with limiting screw holes. Each limiting screw hole is provided with a limiting column 14, so that the lower end surface of the support block is located between the limiting columns 14 on the same side. A threaded through hole is provided on the bottom surface of the support seat 7 near the front end surface, penetrating the top surface. A retraction wheel 13 is provided below the threaded through hole.

[0028] from Figure 3 and Figure 4It can be seen that the diameter of the retraction wheel 13 is larger than the bottom width of the support seat 7, and a connecting screw is provided on the inner ring of the retraction wheel 13. The retraction wheel 13 and the connecting screw are connected by a bearing. The retraction wheel 13 is connected to the threaded through hole on the bottom surface of the support seat 7 through the connecting screw, and the horizontal height of the retraction wheel 13 is the same as the horizontal height of the lifting block 4 in the lower part of the slide seat 3.

[0029] See also Figure 3 There are two support plates 8, which are relatively arranged on the left and right end faces of the support seat 7. The support plate 8 is an inverted triangular structure, and each inner angle is chamfered. Support wheel connection holes are respectively opened on both sides of the midpoint of the upper end face, and positioning screw holes corresponding to the connecting screw holes on the left and right end faces of the support seat 7 are opened on the lower part of the end face. The positioning screw holes are connected and fixed with the connecting screw holes of the support seat 7 by screws.

[0030] from Figure 4 It can be seen that there are two support wheels 9, which are arranged above the support seat 7 and in contact with the rod body of the screw rod 2, and are located between the two support plates 8, corresponding to the support wheel connecting holes on the support plates 8 respectively. The inner ring of the support wheel 9 is provided with a bearing, and a support rod is installed in the bearing. The circumference of both ends of the support rod is provided with an external thread structure. The support wheel 9 is connected to the support wheel connecting hole of the support seat 7 through the support rod, and the external threads at both ends of the support rod pass through the outside of the end face of the support seat 7 and are locked with the support seat 7 by nuts.

[0031] When in use, the support component is installed on the workbench 1 so that it is located on both sides of the middle of the screw rod 2, and then the various components of the support component vertically support the drooping part of the screw rod 2 without mutual cooperation.

[0032] When the ram seat 3 is completely slid away, the support seat 7, support wheel 9 and other components are reset to continue to provide auxiliary support for the drooping part of the screw rod 2.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A vertical auxiliary support mechanism for a workbench transmission screw, comprising a workbench (1), a screw (2), a ram seat (3) and a supporting component, wherein both ends of the screw (2) are connected to the workbench (1) through a bearing seat, the upper and lower parts of the ram seat (3) are connected to the slide rails of the workbench (1), and the middle part is connected to the slider of the screw (2), characterized in that: A lifting block (4) is installed at the middle and lower part of the inner side of the ram seat (3) facing the workbench (1), and the lifting block (4) is an arc-shaped structure with a high middle and low sides facing the end face of the screw rod (2), and the highest point of the arc surface is located below the connection between the ram seat (3) and the slider of the screw rod (2). The number of the supporting components is two groups, which are respectively arranged below the middle of the screw rod (2) on both sides, and the supporting components include a supporting sleeve (5), a supporting seat (7), a supporting plate (8) and a supporting wheel (9); The support sleeve (5) is located below the screw rod (2), and its cylinder is a hollow cylindrical structure with an open top surface. A reset spring (10) is provided in the support sleeve (5), and the bottom of the reset spring (10) is fixed to the inner bottom surface of the support sleeve (5). A reset disc (11) is installed on the top. The reset disc (11) is located in the support sleeve (5), and its outer diameter is the same as the inner diameter of the support sleeve (5). A connecting flange is installed on the top surface of the support sleeve (5), and is connected to the crossbeam of the workbench through the connecting flange. A mounting column (12) is fixed on the bottom surface, and is connected and fixed to the inside of the workbench (1) through the mounting column (12); The support seat (7) is located directly below the screw rod (2) and opposite to the front face of the support sleeve (5). The support seat (7) is a rectangular block, and its top face is an arc-shaped face, so that the support seat (7) forms an arch structure. The rear end face of the support seat (7) is connected to the reset disc (11) in the support sleeve (5) through the connecting column (6). The midpoints of the left and right end faces are respectively provided with connecting screw holes. A threaded through hole penetrating the top face is provided on one side of the bottom face of the support seat (7) near the front face, and a retraction wheel (13) is provided below the threaded through hole. The diameter of the retraction wheel (13) is larger than the bottom width of the support seat (7), the inner ring of the retraction wheel (13) is provided with a connecting screw, the retraction wheel (13) and the connecting screw are connected via a bearing, the retraction wheel (13) is connected to the threaded through hole on the bottom surface of the support seat (7) via the connecting screw, and the horizontal height of the retraction wheel (13) is the same as the horizontal height of the lifting block (4) in the middle and lower part of the ram seat (3); The number of the support plates (8) is two, which are relatively arranged on the left and right end surfaces of the support seat (7). The support plates (8) are inverted triangular structures, and each inner angle is chamfered. The midpoint of the upper end surface is provided with support wheel connection holes on both sides, and the lower end surface is provided with positioning screw holes corresponding to the connection screw holes on the left and right end surfaces of the support seat (7). The positioning screw holes are connected and fixed with the connection screw holes of the support seat (7) by screws. There are two support wheels (9), which are arranged above the support seat (7) and in contact with the rod body of the screw rod (2), and are located between the two support plates (8), respectively corresponding to the support wheel connection holes on the support plates (8). The inner ring of the support wheel (9) is provided with a bearing, and a support rod is installed in the bearing. The circumference of both ends of the support rod is provided with an external thread structure. The support wheel (9) is connected to the support wheel connection hole of the support seat (7) through the support rod, and the external threads at both ends of the support rod pass through the end surface of the support seat (7) and are locked and connected to the support seat (7) through a nut.

2. A vertical auxiliary support mechanism for a workbench transmission screw according to claim 1, characterized in that: Limiting screw holes are installed above both sides of the connecting screw hole of the support seat (7), and limiting columns (14) are respectively provided in each limiting screw hole, so that the lower part of the end surface of the support block is located between the limiting columns (14) on the same side.

3. A vertical auxiliary support mechanism for a workbench transmission screw according to claim 1 or 2, characterized in that: A support stud (15) is provided below the outer peripheral surface of the connecting flange on the support sleeve (5), and the bottom end of the support stud (15) rests on the crossbeam of the workbench (1).

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