CN211516828U - Lead screw deflection correcting mechanism with horizontally moving piston - Google Patents

Abstract

The utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism, the on-line screen storage device comprises a base, it has the recess to open in the base, the recess in-connection has two actuating mechanism, the both sides outer wall of base all is connected with the guide rail, the equal sliding connection of guide rail both sides outer wall has the slider, is connected with the bracket between two sliders, the bracket diapire is connected with the fixed plate, the fixed plate links to each other with actuating mechanism, bracket outer wall connection has two fixed blocks, two be connected with the fixed axle between the fixed block, fixed axle outer wall connection has the bearing roller, two swing joint has lead screw spare between the. The utility model provides a lead screw amount of deflection correction mechanism of piston horizontal migration makes two bearing rollers be close to relatively through the hydro-cylinder horizontal migration of control both sides, makes the bearing roller lift the lead screw middle part to flagging amount of deflection to the lead screw is rectified, makes the device not dig the hole or dig the hole shallower on the lathe bed, in order to reduce the influence to lathe bed intensity, is convenient for improve the precision of lathe.

Description

Lead screw deflection correcting mechanism with horizontally moving piston

Technical Field

The utility model relates to a lead screw correction technical field especially relates to a piston horizontal migration's lead screw amount of deflection aligning gear.

Background

One part of the machine tool is made of a long and thin metal rod, the surface of the metal rod is a surface with high smoothness, and the other part of the machine tool is also provided with threads, namely a ball screw (which is basically used for replacing a trapezoidal screw at present and is commonly called a screw) is used for converting rotary motion into linear motion; or the linear motion is converted into the rotary motion, and the device has the characteristics of high transmission efficiency, accurate positioning and the like, when the lead screw is used as an active body, the nut can be converted into the linear motion along with the rotation angle of the lead screw according to the lead of the corresponding specification, and the passive workpiece can be connected with the nut through the nut seat, so that the corresponding linear motion is realized.

On a large machine tool, a screw rod is often used as a driving element for a moving part, the screw rod is long, the self weight of the screw rod causes the middle of an axis to droop, the screw rod vibrates when rotating at a high speed, the precision of the machine tool is affected, the machine tool cannot work seriously, and the drooping deflection of the screw rod needs to be corrected. The current common method for correcting the sag deflection of the lead screw comprises the following steps: a deep hole is dug in the machine tool body, an oil cylinder is arranged in the deep hole, a piston moves vertically, a pair of carrier rollers are arranged on the piston and supported below a lead screw to correct the deflection of the lead screw. The defect of this method is that a deep hole needs to be dug on the machine body in order to install the oil cylinder and the carrier roller, the strength of the machine tool is affected, oil is easy to store in the hole, and the deflection correcting mechanism of the whole lead screw is soaked in the oil and is inconvenient to maintain.

Therefore, it is necessary to provide a new lead screw deflection correcting mechanism with a horizontally moving piston to solve the above technical problems.

Disclosure of Invention

The utility model provides a lead screw amount of deflection correction mechanism of piston horizontal migration, the technical problem of solution need dig out very dark hole at the lathe bed for correcting the flagging amount of deflection of lead screw in the past, make hydro-cylinder piston vertical migration and lift the lead screw, but can make lathe bed intensity reduce, influence the precision of lathe.

For solving the technical problem, the utility model provides a pair of piston horizontal migration's lead screw amount of deflection correction mechanism, the on-line screen storage device comprises a base, it has the recess to open the chisel in the base, the recess in-connection has two actuating mechanism, the both sides outer wall of base all is connected with the guide rail, the equal sliding connection of guide rail both sides outer wall has the slider, is connected with the bracket between two sliders, the bracket diapire is connected with the fixed plate, the fixed plate links to each other with actuating mechanism, the bracket outer wall is connected with two fixed blocks, two be connected with the fixed axle between the fixed block, fixed axle outer wall connection has the bearing roller, two swing joint has.

Preferably, actuating mechanism includes hydro-cylinder spare, hydro-cylinder spare inner wall sliding connection has piston spare, piston spare outer wall connection has the piston rod, the piston rod is kept away from the one end of piston spare and is connected at the outer wall of fixed plate.

Preferably, the two oil cylinder pieces are connected in parallel in the same oil way.

Preferably, the outer wall of the oil cylinder part is respectively provided with an oil inlet and an air outlet, and the oil inlet and the air outlet are respectively arranged at two ends of the piston part.

Preferably, the cylinder member uses pressure oil or compressed air.

Preferably, the outer wall of the bracket is connected with a fastening bolt, the outer wall of the fastening bolt is in threaded connection with a nut, and the outer wall of the piston rod is provided with a concave hole matched with the fastening bolt in a chiseled mode.

Preferably, the piston rod and the fastening bolt are located on the same axis.

Preferably, the carrier roller comprises an inner ring piece and an outer ring piece, the inner ring piece is rotatably connected to the outer wall of the fixed shaft, the outer ring piece is movably abutted against the screw rod piece, a buffer layer is connected between the inner ring piece and the outer ring piece, telescopic rods are connected between the inner walls of the two sides of the buffer layer, elastic elements are sleeved on the outer walls of the telescopic rods, and the outer ring piece is made of wear-resistant materials.

Compared with the prior art, the utility model provides a pair of piston horizontal migration's lead screw amount of deflection aligning gear has following beneficial effect:

the utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism makes hydro-cylinder horizontal migration through the design, rectifies the flagging amount of deflection of lead screw, avoids in the past for correcting the flagging amount of deflection of lead screw need dig out very dark hole at the lathe bed, makes hydro-cylinder piston vertical migration and lift the lead screw, leads to the lathe bed intensity to reduce, influences the precision of lathe, is favorable to guaranteeing lathe bed intensity, improves the lathe precision.

When lifting the lead screw, install the device at lathe lead screw middle part through the bolt, control hydro-cylinder relative motion makes two piston rods promote the fixed plate and is close to each other, makes the bracket pass through the slider and slides on the guide rail, improves the mobility stability of device, and two bearing rollers outside-in move, hold up the lead screw, avoid because the lead screw is too long, lead to the lead screw middle part to receive the gravity flagging.

The utility model discloses a be provided with the buffer layer with the bearing roller, avoid both sides bearing roller too big to the clamping-force of lead screw, influence the normal rotation of lead screw, and the bearing roller outer wall adopts wear-resisting material, effectively improves the life of bearing roller, avoids receiving wearing and tearing in the friction with the lead screw.

Drawings

Fig. 1 is a schematic view of the overall structure of a lead screw deflection correcting mechanism with a horizontally moving piston according to the present invention;

fig. 2 is a front view of a lead screw deflection correcting mechanism with a horizontally moving piston according to the present invention;

fig. 3 is a first cross-sectional view of a screw deflection correcting mechanism with a horizontally moving piston according to the present invention;

fig. 4 is a second cross-sectional view of the screw deflection correcting mechanism with a horizontally moving piston according to the present invention;

fig. 5 is the cross-sectional structure diagram of the screw deflection correcting mechanism carrier roller with horizontally moving piston according to the present invention.

Reference numbers in the figures: 1. a base; 2. a guide rail; 201. a slider; 3. a bracket; 301. a fixed block; 302. a fixed shaft; 303. a carrier roller; 4. a lead screw member; 5. a fixing plate; 6. an oil cylinder member; 601. a piston member; 602. a piston rod; 603. an oil inlet; 604. an air outlet; 7. fastening a bolt; 701. a nut; 8. an inner ring member; 9. An outer ring member; 10. a buffer layer; 11. a telescopic rod; 12. an elastic element.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein, fig. 1 is the overall structure schematic diagram of a lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 2 is the front view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 3 is the first cross sectional view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 4 is the second cross sectional view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention. The utility model provides a lead screw amount of deflection correction mechanism of piston horizontal migration, including base 1, it has the recess to open in the base 1, the recess in-connection has two actuating mechanism, base 1's both sides outer wall all is connected with guide rail 2, 2 equal sliding connection in the outer wall of guide rail both sides has slider 201, be connected with bracket 3 between two slider 201, bracket 3 diapire is connected with fixed plate 5, fixed plate 5 links to each other with actuating mechanism, bracket 3 outer wall connection has two fixed blocks 301, be connected with fixed axle 302 between two fixed blocks 301, fixed axle 302 outer wall connection has bearing roller 303, swing joint has lead screw spare 4 between two bearing rollers 303, actuating mechanism includes hydro- cylinder spare 6, 6 inner wall sliding connection of hydro-cylinder spare has piston spare 601, piston spare 601 outer wall connection has piston rod 602, piston rod 602 keeps away from.

Two oil cylinder parts 6 which are horizontally arranged and have the same structure are used, the heads of the two oil cylinder parts 6 are opposite, the tail parts of the oil cylinder parts 6 are fixed with a base 1, the heads of piston rods 602 of the oil cylinder parts 6 are respectively connected with a fixing plate 5 at the bottom of a bracket 3, the lower plane of the guide rail 2 is fixed on the base 1, the bracket 3 is fixed on a left slider 201 and a right slider 201 on the guide rail 2, the sliders 201 can move on the guide rail 2, the device is arranged on the outer wall of a machine tool through bolts, and the utility model is positioned in the middle part of a lead screw so as to lift the lead screw which is drooping in the middle part due to overlong length and self gravity, the oil cylinder parts 6 are controlled to move horizontally, the oil cylinder parts 6 push the piston parts 601 to move on the inner wall of the oil cylinder, the piston parts 601 at both sides push the piston rods 602 to be relatively, the stability of the movement of the bracket 3 is improved, the brackets 3 on the two sides are relatively close to each other, and the screw piece 4 in the middle is lifted, so that the problem that a deep hole needs to be dug in the lathe body of the lathe for correcting the sagging deflection of the screw in the prior art is avoided, the oil cylinder piston vertically moves and lifts the screw, the strength of the lathe body is reduced, the precision of the lathe is influenced, the strength of the lathe is favorably ensured, and the precision of the lathe is improved.

Example 2:

please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein, fig. 1 is the overall structure schematic diagram of a lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 2 is the front view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 3 is the first cross sectional view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention, fig. 4 is the second cross sectional view of the lead screw deflection correcting mechanism of piston horizontal movement provided by the present invention. A lead screw deflection correcting mechanism with a horizontally moving piston comprises a base 1, wherein a groove is formed in the base 1, two driving mechanisms are connected in the groove, guide rails 2 are connected to the outer walls of two sides of the base 1, sliding blocks 201 are connected to the outer walls of two sides of the guide rails 2 in a sliding manner, a bracket 3 is connected between the two sliding blocks 201, a fixing plate 5 is connected to the bottom wall of the bracket 3, the fixing plate 5 is connected with the driving mechanisms, two fixing blocks 301 are connected to the outer wall of the bracket 3, a fixing shaft 302 is connected between the two fixing blocks 301, a carrier roller 303 is connected to the outer wall of the fixing shaft 302, a lead screw part 4 is movably connected between the two carrier rollers 303, each driving mechanism comprises an oil cylinder part 6, a piston part 601 is connected to the inner wall of the oil cylinder part 6 in a sliding manner, a piston rod 602, an oil inlet 603 and an air outlet 604 are respectively drilled on the outer wall of the oil cylinder part 6, the oil inlet 603 and the air outlet 604 are respectively arranged at two ends of the piston part 601, and the oil cylinder part 6 uses pressure oil or compressed air; two oil cylinder parts 6 are connected in parallel in an oil circuit at the same time, so that the lifting force of the brackets 3 on two sides is ensured to be automatically balanced, the outer walls of the oil cylinder parts 6 are respectively provided with an oil inlet 603 and an air outlet 604, the applicability of the oil cylinder parts 6 is improved, and pressure oil or compressed air is used in the oil cylinder parts 6.

Example 3:

please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein, fig. 1 is the utility model provides a whole structure schematic diagram of a piston horizontal migration's lead screw amount of deflection correction mechanism, fig. 2 is the utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism's elevation view, fig. 3 is the utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism's cross-sectional view one, fig. 4 is the utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism's cross-sectional view two, fig. 5 is the utility model provides a cross-sectional structure schematic diagram of a piston horizontal migration's lead screw amount of deflection correction mechanism bearing roller. The outer wall of the bracket 3 is connected with a fastening bolt 7, the outer wall of the fastening bolt 7 is in threaded connection with a nut 701, the outer wall of the piston rod 602 is provided with a concave hole matched with the fastening bolt 7 in a chiseled mode, and the piston rod 602 and the fastening bolt 7 are located on the same axis; the fastening bolt 7 and the piston rod 602 are located on the same axis, which is beneficial to limiting the stroke of the piston 601 and the piston rod 602 and preventing the bracket 3 from excessively lifting the screw rod 4.

The carrier roller 303 comprises an inner ring member 8 and an outer ring member 9, the inner ring member 8 is rotatably connected to the outer wall of the fixed shaft 302, the outer ring member 9 is movably abutted against the screw rod member 4, a buffer layer 10 is connected between the inner ring member 8 and the outer ring member 9, telescopic rods 11 are connected between the inner walls of two sides of the buffer layer 10, the outer wall of each telescopic rod 11 is sleeved with an elastic element 12, and the outer ring member 9 is made of wear-resistant materials; through being provided with buffer layer 10 with bearing roller 303, avoid both sides bearing roller 303 too big to the clamping-force of lead screw, influence the normal rotation of lead screw, and bearing roller 303 outer wall adopts wear-resistant material, effectively improves the life of bearing roller 303, avoids receiving wearing and tearing in the friction with the lead screw.

The utility model provides a lead screw amount of deflection correction mechanism of piston horizontal migration's theory of operation as follows:

two oil cylinder parts 6 which are horizontally arranged and have the same structure are used, the heads of the two oil cylinder parts 6 are opposite, the tail parts of the oil cylinder parts 6 are fixed with a base 1, the heads of piston rods 602 of the oil cylinder parts 6 are respectively connected with a fixing plate 5 at the bottom of a bracket 3, the lower plane of the guide rail 2 is fixed on the base 1, the bracket 3 is fixed on a left slider 201 and a right slider 201 on the guide rail 2, the sliders 201 can move on the guide rail 2, the device is arranged on the outer wall of a machine tool through bolts, and the utility model is positioned in the middle part of a lead screw so as to lift the lead screw which is drooping in the middle part due to overlong length and self gravity, the oil cylinder parts 6 are controlled to move horizontally, the oil cylinder parts 6 push the piston parts 601 to move on the inner wall of the oil cylinder, the piston parts 601 at both sides push the piston rods 602 to be relatively, the stability of the movement of the bracket 3 is improved, the brackets 3 on the two sides are relatively close to each other, and the screw piece 4 in the middle is lifted, so that the problem that a deep hole needs to be dug in the lathe body of the lathe for correcting the sagging deflection of the screw in the prior art is avoided, the oil cylinder piston vertically moves and lifts the screw, the strength of the lathe body is reduced, the precision of the lathe is influenced, the strength of the lathe is favorably ensured, and the precision of the lathe is improved.

Compared with the prior art, the utility model provides a piston horizontal migration's lead screw amount of deflection aligning gear has following beneficial effect:

1. the utility model provides a piston horizontal migration's lead screw amount of deflection correction mechanism makes hydro-cylinder horizontal migration through the design, rectifies the flagging amount of deflection of lead screw, avoids in the past for correcting the flagging amount of deflection of lead screw need dig out very dark hole at the lathe bed, makes hydro-cylinder piston vertical migration and lift the lead screw, leads to the lathe bed intensity to reduce, influences the precision of lathe, is favorable to guaranteeing lathe bed intensity, improves the lathe precision.

2. The utility model discloses passing through the bolt with the device and installing at lathe lead screw middle part, control cylinder relative motion makes two piston rods promote the fixed plate and is close to each other, makes the bracket pass through the slider and slides on the guide rail, improves the mobility stability of device, and two bearing roller outside-in motions hold up the lead screw, avoid because the lead screw is too long, lead to the lead screw middle part to receive gravity flagging.

3. The utility model discloses a be provided with the buffer layer with the bearing roller, avoid both sides bearing roller too big to the clamping-force of lead screw, influence the normal rotation of lead screw, and the bearing roller outer wall adopts wear-resisting material, effectively improves the life of bearing roller, avoids receiving wearing and tearing in the friction with the lead screw.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a lead screw amount of deflection correction mechanism of piston horizontal migration, includes base (1), its characterized in that, it has the recess to open in base (1), the recess in-connection has two actuating mechanism, the both sides outer wall of base (1) all is connected with guide rail (2), the equal sliding connection of guide rail (2) both sides outer wall has slider (201), is connected with between two slider (201) bracket (3), bracket (3) diapire is connected with fixed plate (5), fixed plate (5) link to each other with actuating mechanism, bracket (3) outer wall connection has two fixed blocks (301), two be connected with fixed axle (302) between fixed block (301), fixed axle (302) outer wall connection has bearing roller (303), two swing joint has lead screw spare (4) between bearing roller (303).

2. The lead screw deflection correcting mechanism for the horizontal movement of the piston as claimed in claim 1, wherein the driving mechanism comprises a cylinder member (6), the inner wall of the cylinder member (6) is slidably connected with a piston member (601), the outer wall of the piston member (601) is connected with a piston rod (602), and one end of the piston rod (602) far away from the piston member (601) is connected with the outer wall of the fixing plate (5).

3. A lead screw deflection correction mechanism with horizontally displaced piston according to claim 2, characterized in that the two cylinder members (6) are connected in parallel in the same oil path at the same time.

4. The lead screw deflection correction mechanism for horizontal piston movement of claim 3, wherein the outer wall of the cylinder member (6) is respectively provided with an oil inlet (603) and an air outlet (604), and the oil inlet (603) and the air outlet (604) are respectively arranged at two ends of the piston member (601).

5. A lead screw deflection correction mechanism for piston horizontal movement according to claim 4, characterized in that the cylinder member (6) uses pressurized oil or compressed air.

6. The lead screw deflection correcting mechanism for the horizontal movement of the piston as claimed in claim 2, wherein a fastening bolt (7) is connected to the outer wall of the bracket (3), a nut (701) is connected to the outer wall of the fastening bolt (7) in a threaded manner, and a concave hole matched with the fastening bolt (7) is formed in the outer wall of the piston rod (602).

7. Lead screw deflection correction mechanism for piston horizontal movement according to claim 6, characterized in that the piston rod (602) is located on the same axis as the fastening bolt (7).

8. The lead screw deflection correction mechanism for the horizontal movement of the piston as claimed in claim 1, wherein the carrier roller (303) comprises an inner ring member (8) and an outer ring member (9), the inner ring member (8) is rotatably connected to the outer wall of the fixed shaft (302), the outer ring member (9) is movably abutted against the lead screw member (4), a buffer layer (10) is connected between the inner ring member (8) and the outer ring member (9), a telescopic rod (11) is connected between the inner walls of two sides of the buffer layer (10), an elastic element (12) is sleeved on the outer wall of the telescopic rod (11), and the outer ring member (9) is made of wear-resistant materials.

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