Horizontal adjusting device

Abstract

According to the horizontal adjusting device, a workbench and a fixed bottom plate are combined through a middle limiting mechanism, and the middle limiting mechanism limits translation of the workbench in the first direction and the second direction; a first annular sliding rail is arranged on the upper end face of the fixed bottom plate. The lower end face of the first adjusting circular ring is assembled with the first annular sliding rail. A second annular sliding rail is arranged on the lower end face of the workbench, and the upper end face of the first adjusting circular ring is assembled with the second annular sliding rail; horizontal adjustment of the upper end face of the workbench is achieved by adjusting the rotating position of the first adjusting circular ring along the first annular sliding rail and the rotating position of the second adjusting circular ring along the second annular sliding rail. The adjusting process is simplified, the rigidity of the working table is improved, deformation is not prone to occurring, angle adjustment is single and controllable, and surface contact stability is high.

Description

Technical Field

[0001] The invention relates to the technical field of workbench adjustment, and in particular to a level adjustment device. Background Art

[0002] In factory practice, adjustable point supports are often used to achieve horizontal adjustment of equipment, such as Figure 1 As shown, three support screws (e) are fixed to the fixed base plate (b) through fixing nuts (a), and the support screws are fixed to the work surface (c) through the adjustment and locking nuts (d) that can be moved up and down. When necessary, the level of the work surface can be adjusted by adjusting the height of the nuts (d).

[0003] In actual production, supports with 4, 6, etc. points are also used. In principle, the height of the support points is adjusted to achieve horizontal adjustment of the working plane, such as a heavy-duty working platform composed of a trapezoidal lead screw or a hydraulically driven lifting mechanism, or the "tiger foot" commonly used on machine tools.

[0004] The adjustment of multi-point support is more complicated: when using this type of multi-point support structure, it is usually not possible to adjust to a horizontal state quickly, because after a certain adjustment point moves up and down, it is usually correlated with the adjustment results of other points. Adjustment in one direction always destroys the state of the other direction, and repeated adjustments in both directions are required to achieve the desired result.

[0005] The work surface has high rigidity requirements: with multi-point support, the force on the work surface will eventually be concentrated on the support points, resulting in large differences in the deformation of the work surface at different positions. The work surface needs to have sufficient rigidity to reduce the deformation.

[0006] Poor stability: The support points are subjected to concentrated forces and are usually supported by threaded structures. After locking, the stress is gradually released and the locking position may change slightly, which has an adverse effect on high-precision positioning requirements and requires a certain amount of time to stabilize. Summary of the invention

[0007] Based on the above problems, the present invention provides a horizontal adjustment device, which aims to solve the problems of complicated, changeable and unstable adjustment of multiple support points in the prior art.

[0008] A level adjustment device comprises, from bottom to top, a fixed bottom plate, a first adjustment ring with an inclined surface, a second adjustment ring with an inclined surface, and a workbench;

[0009] The workbench and the fixed bottom plate are combined by an intermediate limiting mechanism, and the intermediate limiting mechanism limits the translation of the workbench along a first direction and a second direction, and the first direction and the second direction are perpendicular to each other and parallel to the upper end surface of the fixed bottom plate;

[0010] The upper end surface of the fixed bottom plate is provided with a first annular slide rail, and the lower end surface of the first adjusting ring is assembled with the first annular slide rail;

[0011] The lower end surface of the workbench is provided with a second annular slide rail, and the upper end surface of the first adjusting ring is assembled with the second annular slide rail;

[0012] The horizontal adjustment of the upper end surface of the workbench is achieved by adjusting the rotation position of the first adjustment ring along the first annular slide rail and the rotation position of the second adjustment ring along the second annular slide rail.

[0013] Furthermore, the space limiting mechanism includes:

[0014] A translation limiting column, wherein a cylindrical hole and two notches connected to the cylindrical hole are formed on the translation limiting column, and the notches extend to the upper end surface of the translation limiting column;

[0015] A rotating limit rod is provided with a limit ball on the rotating limit rod, the limit ball is located in the cylindrical hole, and the diameter of the limit ball matches the diameter of the cylindrical hole;

[0016] One end of the rotation limiting rod extends out from a notch and is connected to the base, and the other end of the rotation limiting rod extends out from a notch and is connected to the base;

[0017] The base and the workbench are connected.

[0018] Further, the level adjustment device further includes a first adjustment knob and a first gear, and the first adjustment knob is connected to the first gear;

[0019] A first external gear is arranged along the outer side wall of the first adjusting ring, and the first external gear is meshingly connected with the first gear.

[0020] Further, the level adjustment device further comprises a second adjustment knob and a second gear, and the second adjustment knob is connected to the second gear;

[0021] A second external gear is arranged along the outer side wall of the second adjusting ring, and the second external gear is meshingly connected with the second gear.

[0022] Furthermore, the first adjusting ring is provided with a first mark at the position where the distance between the upper and lower end surfaces of the outer wall is the smallest, and the second adjusting ring is provided with a second mark at the position where the distance between the upper and lower end surfaces of the outer wall is the smallest.

[0023] Furthermore, a first groove is formed at the edge of the lower end surface of the fixed bottom plate, and the first adjusting knob partially extends into the first groove.

[0024] Furthermore, a second groove is formed on the edge of the upper end surface of the workbench, and the second adjusting knob partially extends into the second groove.

[0025] Further, the first adjustment knob is circular;

[0026] The side wall shape of the first groove matches the partial circular edge of the first adjusting knob extending into the first groove.

[0027] Further, the second adjustment knob is circular;

[0028] The side wall shape of the second groove matches the circular edge of the part of the second adjusting knob extending into the second groove. Further, the side wall of the fixed bottom plate is provided with a first extension portion, the first extension portion is provided with a first through hole, and the first adjusting knob and the first gear are connected at the upper and lower sides of the first extension portion through the first through hole.

[0029] The beneficial technical effects of the present invention are: through a single surface contact support, the adjustment process is simplified; a large range of annular surface contact is adopted, the axial height is highly symmetrical, the rigidity of the worktable is improved and it is not easy to deform, there is only one support point, the angle adjustment is single and controllable, and the surface contact stability is high. It can be seen that the present invention realizes more convenient horizontal adjustment and improves working stability; BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a level adjustment device in the prior art;

[0031] Figure 2 A schematic structural diagram of a level adjustment device provided by the present invention;

[0032] Figure 3 A schematic structural diagram of an intermediate limiting mechanism of a level adjustment device provided by the present invention;

[0033] Figure 4 A schematic diagram of the structure of a level adjustment device provided by the present invention;

[0034] Figure 5 A schematic diagram of a structure in which two circular ring marks of a level adjustment device provided by the present invention have an angle difference of 45 degrees;

[0035] Figure 6 A schematic diagram of a structure in which two circular ring marks of a level adjustment device provided by the present invention have an angle difference of 90 degrees;

[0036] Figure 7 A schematic diagram of a structure in which two circular ring marks of a level adjustment device provided by the present invention have an angle difference of 135 degrees;

[0037] Figure 8 A schematic structural diagram of a horizontal adjustment device provided by the present invention in which two circular ring marks have an angle difference of 180 degrees.

[0038] in,

[0039] 1-fixed bottom plate; 12-first extension portion; 13-first groove;

[0040] 2-first adjustment ring; 22-first external gear; 23-first mark;

[0041] 3-second adjusting ring; 31-second annular groove; 32-second external gear; 33-second mark;

[0042] 4-working table; 41-second annular slide rail; 42-second extension portion; 43-second groove;

[0043] 5-intermediate limiting mechanism; 51-translation limiting column; 52-cylindrical hole; 53-notch; 54-rotation limiting rod; 55-limiting ball; 56-base;

[0044] 6-First adjustment knob;

[0045] 7- first gear;

[0046] 8- Second adjustment knob;

[0047] 9- Second gear. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0051] See also Figure 2 The present invention provides a level adjustment device, comprising, from bottom to top, a fixed base plate (1), a first adjustment ring (2) with an inclined surface, a second adjustment ring (3) with an inclined surface, and a workbench (4);

[0052] The workbench (4) and the fixed base plate (1) are connected via an intermediate limiting mechanism (5), and the intermediate limiting mechanism (5) limits the translation of the workbench (4) along a first direction and a second direction, wherein the first direction and the second direction are perpendicular to each other and are both parallel to the upper end surface of the fixed base plate (1);

[0053] The upper end surface of the fixed bottom plate (1) is provided with a first annular slide rail, and the lower end surface of the first adjusting ring (2) is assembled with the first annular slide rail;

[0054] The lower end surface of the workbench (4) is provided with a second annular slide rail (41), and the upper end surface of the first adjustment ring (2) is assembled with the second annular slide rail (41);

[0055] The horizontal adjustment of the upper end surface of the workbench (4) is achieved by adjusting the rotation position of the first adjustment ring (2) along the first annular slide rail and the rotation position of the second adjustment ring (3) along the second annular slide rail (41).

[0056] Specifically, the upper end surface of the first adjusting ring is in contact with the lower end surface of the second adjusting ring, that is, they are face to face.

[0057] The first adjustment ring and the second adjustment ring both have inclined surfaces, and the heights of the side walls are different. Therefore, the total height of the first adjustment ring and the second adjustment ring can be changed by rotating the first adjustment ring and the second adjustment ring along their respective annular slide rails, thereby achieving adjustment of the work surface. The adjustment process is simplified by a single surface contact support; a large range of annular surface contact is adopted, and the axial height is symmetrical, which improves the rigidity of the work surface and makes it less prone to deformation. There is only one support point, the angle adjustment is single and controllable, and the surface contact stability is high. It can be seen that the present invention achieves more convenient horizontal adjustment and improves working stability;

[0058] See also Figure 3 , further, the space limiting mechanism (5) comprises:

[0059] A translation limiting column (51), wherein a cylindrical hole (52) and two notches (53) connected to the cylindrical hole (52) are formed on the translation limiting column (51), and the notches (53) extend to the upper end surface of the translation limiting column (51);

[0060] A rotation limiting rod (54), wherein a limiting ball (55) is provided on the rotation limiting rod (54), the limiting ball (55) is located in the cylindrical hole (52), and the diameter of the limiting ball (55) matches the diameter of the cylindrical hole (52);

[0061] One end of the rotation limiting rod (54) extends out from a notch (53) and is connected to the base (56), and the other end of the rotation limiting rod (54) extends out from a notch (53) and is connected to the base (56);

[0062] The base (56) is connected to the workbench (4).

[0063] The diameter of the limiting ball (55) and the diameter of the cylindrical hole (52) are matched, and the rotation limiting rod is stuck in the groove of the front, back, left, and right translation limiting column, and is restricted from translation along the direction (first direction) in which the rotation limiting rod (54) extends, and is restricted from translation along the direction (second direction) perpendicular to the rotation limiting rod (54). Therefore, its rotation around the vertical axis is restricted, and all necessary constraints are achieved, that is, no left, right, front, and back translation occurs. The translation limiting column (51) is a tubular part with a cylindrical hole (52) and a notch. The cylindrical hole (52) and the two notches (53) allow the rotation limiting rod (54) to move up and down, and the rotation limiting rod (54) can tilt and deflect left and right, that is, one end is high and the other end is low. The rotation limiting rod (54) can also rotate around the length direction of the rod extension as an axis to achieve forward and backward pitch.

[0064] The workbench and the fixed base plate are connected via a "central limiting mechanism", that is, the translation limiting column (51) is connected to the fixed base plate, and the base (56) is connected to the workbench. The base (56) can be separated from the translation limiting column (51) to achieve separation between the workbench and the fixed base plate.

[0065] Furthermore, the base (56) includes a transverse block and longitudinal blocks with both ends of the transverse block pointing downwards;

[0066] The transverse block of the base (56) and the workbench (4) are connected by threading;

[0067] Insertion holes are provided on the inner sides of the two longitudinal blocks of the base (56), and the two ends of the rotation limiting rod (54) are respectively inserted into the corresponding insertion holes of the longitudinal blocks of the base (56).

[0068] Furthermore, the first annular slide rail is a first annular projection, and the lower end surface of the first adjusting ring (2) is provided with a first annular groove adapted to the first annular projection;

[0069] The lower end surface of the first adjusting circular ring (2) is a horizontal surface, and the upper end surface of the first adjusting circular ring (2) is an inclined surface.

[0070] Furthermore, the second annular slide rail (41) is a second annular projection, and the upper end surface of the second adjusting ring (3) is provided with a second annular groove (31) adapted to the second annular projection.

[0071] The upper end surface of the second adjusting circular ring (3) is a horizontal surface, and the lower end surface of the second adjusting circular ring (3) is an inclined surface.

[0072] The cooperation between the annular boss and the annular groove enables the adjusting ring to rotate but not translate.

[0073] When a ring with an inclined surface rotates around the central axis of the horizontal plane of the ring, the normal direction of the inclined surface will rotate around the central axis. Two such rings are connected in series, and the horizontality of the working plane is jointly determined by the rotation angles of the two rings.

[0074] Furthermore, the level adjustment device further comprises a first adjustment knob (6) and a first gear (7), wherein the first adjustment knob (6) is connected to the first gear (7);

[0075] A first external gear (22) is provided along the outer side wall of the first adjustment ring (2), and the first external gear (22) is meshingly connected with the first gear (7).

[0076] Furthermore, the level adjustment device further comprises a second adjustment knob (8) and a second gear (9), and the second adjustment knob (8) is connected to the second gear (9);

[0077] A second external gear (32) is provided along the outer side wall of the second adjustment ring (3), and the second external gear (32) is meshingly connected with the second gear (9).

[0078] Through the meshing of the respective gears and the external gears and the connection of the gears and the knobs, when the adjusting knob is rotated, the connected gear is driven to rotate. Due to the meshing relationship, the external gear meshing with the gears rotates accordingly, thereby driving the adjusting ring to rotate along the corresponding annular slide rail. When the external gear of each ring is driven to rotate by its own gears and buttons, the two adjusting rings can adjust the inclination angles to complete the angle adjustment of the work surface.

[0079] See also Figure 4 Furthermore, the first adjustment ring (2) is provided with a first mark (23) at the position where the distance between the upper and lower end surfaces of the outer wall is the smallest.

[0080] Furthermore, the second adjustment ring (3) is provided with a second marking line (33) at the position where the distance between the upper and lower end surfaces of the outer wall is the smallest.

[0081] Specifically, the first mark is a mark line extending up and down.

[0082] Specifically, the second mark is a mark line extending up and down.

[0083] The two adjusting rings each have a horizontal surface and an inclined surface, and the lowest point of the inclined surface relative to the horizontal surface is the point where the distance between the upper and lower end surfaces is the smallest.

[0084] Mark the lowest point of the inclined surface to clearly know the current position relationship between the two adjustment rings. Figure 4 As shown, the first mark and the second mark overlap each other, indicating that the angle difference between the two horizontal adjustment rings is 0 degree. Figure 5 It means that the angles of the two horizontal adjustment rings differ by 45 degrees. Figure 6It means that the angles of the two horizontal adjustment rings differ by 90 degrees. Figure 7 It means that the angles of the two horizontal adjustment rings differ by 135 degrees. Figure 8 It means that the angles of the two horizontal adjustment rings differ by 180 degrees.

[0085] Since the tilt height of the adjustment ring changes linearly, the total height also changes linearly after the two adjustment rings are connected in series. Through different angle combinations, different height differences between the highest point and the lowest point can be obtained, thereby obtaining different overall inclination angles. Since it is a linear combination, the total lowest position after the combination is always in the center of the lowest point of the two adjustment rings (that is, the first mark and the second mark overlap up and down), so the height adjustment can be easily achieved according to the position of the two adjustment ring marks, and the adjustment of the end surface level on the workbench can be achieved through the following process.

[0086] The first step is to adjust the two adjustment rings to an angle difference of 180 degrees, that is, the first mark and the second mark are the farthest. At this time, the upper and lower planes of the adjustment mechanism composed of the two adjustment rings are parallel (that is, the lower end face of the first adjustment ring is parallel, and the upper end face of the second adjustment ring is parallel). Measure the highest point position of the end face on the workbench at this time and mark it as the initial position.

[0087] In the second step, the two adjustment rings are adjusted to an angle difference of 0 degrees, that is, the first mark and the second mark are overlapped, and then the first mark and the second mark are adjusted to the initial position measured in the first step. The initial position of the first step is at the highest point. When the first mark and the second mark are aligned with the initial position, the lowest points of the inclined surfaces of the two adjustment rings are at this initial position, so that this initial position is reduced to the maximum extent relative to the highest point of the first step.

[0088] The third step is to adjust the two adjustment rings in opposite directions simultaneously, that is, keep the midpoint between the marks of the two adjustment rings along the arc edge at the initial position until the level of the work surface meets the requirements.

[0089] Compared with the multi-point support adjustment mechanism in the prior art, the present invention decomposes the angle adjustment into two steps: (1) determining the angle limit position; (2) adjusting the tilt degree. This eliminates the mutual coupling between the various support points in the multi-point support adjustment structure, thereby simplifying the operation process and avoiding repeated adjustments.

[0090] In addition, the present invention uses a whole circular ring to support the work surface near the edge, and the middle part is also supported by an intermediate limiting mechanism. The structure is highly symmetrical, the supporting range is large, and the structural rigidity is good.

[0091] In addition, the present invention adopts surface-to-surface contact support, and only translation occurs between the surfaces without angle changes of pitch and roll, thereby avoiding angle errors caused by stress release at certain points in the multi-point support structure and achieving good stability.

[0092] Furthermore, a first extension portion (12) is provided on the side wall of the fixed base plate (1), the first extension portion (12) is provided with a first through hole, and the first adjustment knob (6) and the first gear (7) are connected on the upper and lower sides of the first extension portion (12) through the first through hole.

[0093] Furthermore, a second extension portion (42) is provided on the side wall of the workbench (4), and the second extension portion (42) is provided with a second through hole. The second adjustment knob (8) and the second gear (8) are respectively located on the upper and lower sides of the second extension portion (42) and are connected through the second through hole.

[0094] The adjusting knob and the gear are designed together through the design of the extension part and the through hole.

[0095] Furthermore, a first groove (13) is provided at the edge of the lower end surface of the fixed base plate (1), and a portion of the first adjusting knob (6) extends into the first groove (13).

[0096] Furthermore, a second groove (43) is provided on the edge of the upper end surface of the workbench (4), and a portion of the second adjusting knob (8) extends into the second groove (43).

[0097] Furthermore, the first adjusting knob (6) is circular;

[0098] The shape of the side wall of the first groove (13) matches the partially circular edge of the first adjusting knob (6) extending into the first groove (13).

[0099] Furthermore, the second adjusting knob (8) is circular;

[0100] The shape of the side wall of the second groove (43) matches the partially circular edge of the second adjusting knob (8) extending into the second groove (43).

[0101] The design of the groove and the shape of the groove side wall cooperate with the circular edge of the adjusting knob so that the second adjusting knob limits the rotation of the workbench and the first adjusting knob limits the rotation of the fixed base plate.

[0102] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A level adjustment device, characterized in that: It comprises, from bottom to top, a fixed base plate (1), a first adjustment ring (2) with an inclined surface, a second adjustment ring (3) with an inclined surface, and a workbench (4); The workbench (4) and the fixed base plate (1) are connected via an intermediate limiting mechanism (5), and the intermediate limiting mechanism (5) limits the translation of the workbench (4) along a first direction and a second direction, wherein the first direction and the second direction are perpendicular to each other and are parallel to the upper end surface of the fixed base plate (1); The upper end surface of the fixed base plate (1) is provided with a first annular slide rail, and the lower end surface of the first adjusting ring (2) is assembled with the first annular slide rail; The lower end surface of the workbench (4) is provided with a second annular slide rail (41), and the upper end surface of the first adjusting ring (2) is assembled with the second annular slide rail (41); By adjusting the rotational position of the first adjustment ring (2) along the first annular slide rail and the rotational position of the second adjustment ring (3) along the second annular slide rail (41), the horizontal adjustment of the upper end surface of the workbench (4) is achieved.

2. A level adjustment device as claimed in claim 1, characterized in that: The space limiting mechanism (5) comprises: A translation limiting column (51), wherein a cylindrical hole (52) and two notches (53) communicating with the cylindrical hole (52) are formed on the translation limiting column (51), and the notches (53) extend to the upper end surface of the translation limiting column (51); A rotation limiting rod (54), wherein a limiting ball (55) is provided on the rotation limiting rod (54), wherein the limiting ball (55) is located in the cylindrical hole (52), and the diameter of the limiting ball (55) matches the diameter of the cylindrical hole (52); One end of the rotation limiting rod (54) extends out from one of the notches (53) and is connected to the base (56), and the other end of the rotation limiting rod (54) extends out from one of the notches (53) and is connected to the base (56); The base (56) is connected to the workbench (4).

3. A level adjustment device as claimed in claim 1, characterized in that: The level adjustment device further comprises a first adjustment knob (6) and a first gear (7), wherein the first adjustment knob (6) is connected to the first gear (7); A first external gear (22) is provided along the outer side wall of the first adjustment ring (2), and the first external gear (22) is meshingly connected with the first gear (7).

4. A level adjustment device as claimed in claim 1, characterized in that: The level adjustment device further comprises a second adjustment knob (8) and a second gear (9), wherein the second adjustment knob (8) is connected to the second gear (9); A second external gear (32) is provided along the outer side wall of the second adjustment ring (3), and the second external gear (32) is meshingly connected with the second gear (9).

5. A level adjustment device as claimed in claim 1, characterized in that: The first adjustment ring (2) is provided with a first mark (23) at the location where the distance between the upper and lower end surfaces of the outer wall is the smallest, and the second adjustment ring (3) is provided with a second mark (33) at the location where the distance between the upper and lower end surfaces of the outer wall is the smallest.

6. A level adjustment device as claimed in claim 3, characterized in that: A first groove (13) is formed at the edge of the lower end surface of the fixed base plate (1), and a portion of the first adjusting knob (6) extends into the first groove (13).

7. A level adjustment device as claimed in claim 4, characterized in that: A second groove (43) is formed on the edge of the upper end surface of the workbench (4), and a portion of the second adjusting knob (8) extends into the second groove (43).

8. A level adjustment device as claimed in claim 6, characterized in that: The first adjusting knob (6) is circular; The shape of the side wall of the first groove (13) matches the circular edge of the portion of the first adjusting knob (6) that extends into the first groove (13).

9. A level adjustment device as claimed in claim 7, characterized in that: The second adjusting knob (8) is circular; The shape of the side wall of the second groove (43) matches the partially circular edge of the second adjusting knob (8) extending into the second groove (43).

10. A level adjustment device as claimed in claim 3, characterized in that: The side wall of the fixed base plate (1) is provided with a first extension portion (12), the first extension portion (12) is provided with a first through hole, and the first adjustment knob (6) and the first gear (7) are located on the upper and lower sides of the first extension portion (12) and are connected through the first through hole.

Images