CN109773583B - Numerical control dividing plate - Google Patents
Numerical control dividing plate Download PDFInfo
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- CN109773583B CN109773583B CN201811551235.4A CN201811551235A CN109773583B CN 109773583 B CN109773583 B CN 109773583B CN 201811551235 A CN201811551235 A CN 201811551235A CN 109773583 B CN109773583 B CN 109773583B
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Abstract
The invention provides a numerical control index plate, which comprises: a box body; a double-lead screw rod is transversely arranged in the box body; a main shaft which is horizontally vertical to the double-lead screw is arranged above the double-lead screw, and a double-lead worm wheel meshed with the main shaft is arranged on the main shaft; a transmission shaft of the servo motor is connected with a double-lead screw through a connecting cylinder; the box body comprises an air brake base and an upper box body, an oil sealing counter bore penetrating through a first mounting hole is formed in the middle of the upper end of the upper box body, and an oil filling screw plug is mounted on the oil sealing counter bore; and a sealing counter bore is further arranged at one end of the upper box body, a steel ball is arranged in the sealing counter bore, and a fastening screw is arranged at the upper part of the steel ball. According to the invention, the oil seal counter bore is arranged at the top of the upper box body, and the oil pressure is adjusted by arranging the oil filling screw plug inside, so that the phenomenon that the oil leakage is easy to occur at the oil filling opening due to the fact that the oil pressure at the joint of the upper box body and the lower box body is larger in the meshing process of the worm wheel and the worm is avoided.
Description
Technical Field
The invention relates to the field of indexing machine preparation, in particular to a numerical control indexing disc.
Background
At present, a numerical control indexing disc is a machine tool accessory which clamps a workpiece on a chuck or between two centers and enables the workpiece to rotate, index and position, and is widely applied to milling machines, drilling machines and surface grinding machines; the existing dividing plate generally comprises a motor, a worm-and-gear pair and a dividing plate, wherein the dividing plate and a worm wheel rotate simultaneously, so that the rotating angle of the worm wheel is the angle displayed by the dividing plate, the motor is in transmission connection with the worm and drives the worm to rotate clockwise or anticlockwise in work, and the worm wheel and the worm are meshed with each other, so that the worm wheel rotates according to the set degree.
In the prior art, as in patent document 1: CN201320412459.3 patent, the invention patent provides a novel numerical control dividing disc; the invention discloses the technical field of machine tool parts, in particular to a novel numerical control dividing plate; the novel numerical control index plate can effectively adjust the gap between the tooth on the worm and the tooth groove on the worm wheel, and effectively ensure the machining precision of a workpiece; including motor, worm wheel, workstation and locking device, be provided with spiral helicine tooth on the worm, the tooth thickness of tooth is followed the axis direction by one end to the other end grow gradually and the tooth thickness difference between adjacent tooth is greater than 0.015mm and is less than 0.03mm, and the one end of worm links to each other with motor drive, and the top of the other end of worm is provided with the retaining member. The oiling opening of its lubricating oil of this indexing device sets up in worm one side, and its box merges by upper and lower box and constitutes, and its oiling opening closes on the junction of upper and lower box, and worm wheel and worm interlock in-process, and the junction oil pressure of upper and lower box is great for the easy oil leak phenomenon that takes place of oiling opening part.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a numerical control index plate, which solves the defect that the oil leakage phenomenon is easy to occur at an oil filling opening because the oil filling opening of the existing numerical control index plate is arranged at one side of a worm and the oil pressure at the joint of an upper box body and a lower box body is larger in the meshing process of a worm wheel and the worm.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a numerical control index plate, including: a box body; a double-lead worm is transversely arranged in the box body; a main shaft which is horizontally vertical to the double-lead worm is arranged above the double-lead worm, and a double-lead worm wheel meshed with the main shaft is arranged on the main shaft; a transmission shaft of the servo motor is connected with a double-lead worm through a connecting cylinder; the box body comprises a base and an upper box body, an oil sealing counter bore penetrating through a first mounting hole is formed in the middle of the upper end of the upper box body, and an oil filling screw plug is mounted on the oil sealing counter bore; and a sealing counter bore is further arranged at one end of the upper box body, a steel ball is arranged in the sealing counter bore, and a fastening screw is arranged at the upper part of the steel ball. According to the invention, the oil seal counter bore is arranged at the top of the upper box body, and the oil pressure is adjusted by arranging the oil filling screw plug inside, so that the phenomenon that oil leakage is easy to occur at an oil filling opening due to large oil pressure at the joint of the upper box body and the lower box body in the meshing process of the worm wheel and the worm is avoided.
Preferably, the braking device comprises a fixed cylinder, and the fixed cylinder is installed above the upper box body above the first installation hole; the end part of the fixed cylinder is provided with an annular fixed sheet; the annular fixing plate is provided with a through hole positioned in the center and a plurality of threaded holes positioned on the periphery of the through hole. The double-lead worm gear adjusting device is provided with the reset assembly, when the double-lead worm rotates, the double-lead worm gear is stopped through the reset assembly, and then the meshing angle between the double-lead worm gear and the double-lead worm is adjusted; the double-lead worm wheel can be restored to the initial state, and the deviation caused by the meshing of the worm wheel and the worm of the dividing machine after long-time use is eliminated; the problem of current numerical control graduated disk have that the worm gear meshing of dividing machine can appear the skew after long-time the use, lead to the number of degrees of rotation to take place the defect of error is solved. The fixing cylinder and the fixing ring piece are arranged to fix the braking device on the upper box body more easily, so that the double-lead worm wheel is convenient to align.
Preferably, be equipped with the installation cavity that the external diameter is greater than fenestrate external diameter in the fixed cylinder, be equipped with the slide bar in the installation cavity, the fixed block is equipped with to the slide bar bottom, the slide bar outside cover is equipped with the spring, spring one end supports the fixed block, and the other end supports annular stationary blade. The sliding rod sleeved with the spring is arranged, so that the automatic resetting can be realized, and the resetting of the sliding rod is not required to be adjusted manually.
Preferably, the fixed block is kept away from spring one end and is had the support column, the braking piece is equipped with to support column one end, annular blotter is equipped with to the support column outer end. The double-lead worm gear resetting device is provided with the buffer cushion, so that the situation that the resetting assembly exerts too much force to damage the double-lead worm gear is avoided.
Preferably, one end of the braking sheet is provided with a pair of fixed blocks which are arranged in parallel along the direction of the double-guide-stroke turbine, and a roller is arranged between the pair of fixed blocks; the rolling shaft is provided with a braking gear, and the braking gear is meshed with the double-lead turbine; the stopping piece is provided with a limiting groove matched with the stopping gear. The invention is provided with the braking sheet matched with the braking gear, and has higher meshing degree and accurate adjustment.
Preferably, the box body comprises a base and an upper box body, and the double-lead worm is positioned between the base and the upper box body. The present invention provides a base and an upper housing, rather than an integral structure, which is easier to install and remove.
Preferably, a single-row tapered roller bearing is installed at one end, far away from the servo motor, of the double-lead worm, and a single-row needle roller bearing without an inner ring is installed at one end, close to the servo motor, of the double-lead worm. The single-row tapered roller bearing and the single-row needle roller bearing without the inner ring are arranged, so that the friction force between the double-lead worm and the base is reduced.
Preferably, a worm adjusting sleeve is installed on the outer side of the single-row tapered roller bearing and fixed on the base through a bolt, and a first worm locking nut and a second worm locking nut are installed on the outer side of the worm adjusting sleeve. The first worm locking nut and the second worm locking nut are arranged, so that the friction force between the worm adjusting sleeve and the base is reduced.
Preferably, a third mounting hole communicated with the first mounting hole is formed in the upper box body; the third mounting hole is the upper part of the first mounting hole; and a fastening and loosening assembly is arranged in the third mounting hole. The fastening and loosening assembly comprises a fixed sleeve and a limiting piece, the fixed sleeve is inserted into the third mounting hole, and a slidable main column is inserted into the fixed sleeve; the tail end of the main column is provided with a fixed end piece with the outer diameter larger than that of the main column; a limiting ring is arranged on the outer side wall of the fixing sleeve, a spring is arranged on the fixing sleeve positioned on one side of the limiting ring, one end of the spring props against the limiting ring, and the other end of the spring props against the fixing end piece; the end, far away from the fixed end piece, of the fixed main column is provided with a clamping end piece, the limiting piece comprises a pair of limiting columns, the tail ends of the limiting columns are provided with rollers, the limiting columns are arranged in parallel, a movable gap is formed between the rollers of the limiting columns, and the movable gap is located on a movement axis of the clamping end piece; the limiting column is fixedly connected with the upper box body through a connecting piece. The invention is provided with the fastening and loosening assembly which can adjust the oil pressure in the first mounting hole.
(III) advantageous effects
The numerical control dividing plate provided by the invention has the following advantages:
1. the double-lead worm gear adjusting device is provided with the reset assembly, when the double-lead worm rotates, the double-lead worm gear is stopped through the reset assembly, and then the meshing angle between the double-lead worm gear and the double-lead worm is adjusted; the double-lead worm wheel can be restored to the initial state, and the deviation caused by the meshing of the worm wheel and the worm of the dividing machine after long-time use is eliminated; the problem of current numerical control graduated disk have that the worm gear meshing of dividing machine can appear the skew after long-time the use, lead to the number of degrees of rotation to take place the defect of error is solved.
Drawings
FIG. 1 is a front sectional view of a numerical control index plate according to embodiment 1 of the present invention;
FIG. 2 is a side sectional view of the numerically controlled index plate according to embodiment 1 of FIG. 1;
FIG. 3 is a side reset assembly structure of the numerical control index plate of the embodiment 1 of the invention;
fig. 4 is a side surface tension and relaxation assembly structure of the numerical control indexing plate of the embodiment 1 of fig. 1 of the invention.
1. The device comprises a box body, 2, a double-lead worm, 3, a main shaft, 4, a double-lead worm wheel, 5, a servo motor, 6, a connecting cylinder, 7, a base, 8, an upper box body, 9, a single-row tapered roller bearing, 10, a single-row needle roller bearing without an inner ring, 11, a worm adjusting sleeve, 12, a first worm locking nut, 13, a second worm locking nut, 14, a first mounting hole, 15, a worm hole cover, 16, a screwing-in oil pointer, 17, a rear end cover, 18, a main shaft flange, 19, a counter bore, 20, an oil seal, 21, an oil sealing counter bore, 22, an oil filling screw plug, 23, a sealing counter bore, 24, a steel ball, 25, an inner hexagonal column head fastening screw, 26, a thrust bearing, 27, a mounting positioning hole, 30, a reset assembly, 31, a fixing cylinder, 32, a second mounting hole, 33, an annular fixing piece, 34, a threaded hole, 35, a mounting cavity, 36, a sliding rod, 37, 38, The device comprises springs, 39, support columns, 40, braking sheets, 41, a buffer pad, 44, a fixing block, 45, a rolling shaft, 46, a braking gear, 47, a limiting groove, 48, a folding piece, 49, an electric push pump, 50, a push rod, 51, a third mounting hole, 52, a fastening and loosening assembly, 53, a fixing sleeve, 54, a main column, 55, a fixing end piece, 56, a limiting ring, 57, a return spring, 58, a clamping end piece, 59, a limiting column, 60, a rolling wheel, 61, a limiting piece, 62 and a connecting piece; 63. a limit ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; may be mechanically coupled, directly coupled, or indirectly coupled through an intermediary. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, 2, 3 and 4, the numerical control index plate comprises a box body 1; a double-lead worm 2 is transversely arranged in the box body; a main shaft 3 which is horizontally vertical to the double-lead worm is arranged above the double-lead worm, and a double-lead worm wheel 4 meshed with the main shaft is arranged on the main shaft; a servo motor 5 is further arranged on one side of the box body, and a transmission shaft of the servo motor is connected with a double-lead worm through a connecting cylinder 6; the box body comprises a base 7 and an upper box body 8, the double-lead worm is positioned between the base and the upper box body, a single-row tapered roller bearing 9 is installed at one end, far away from the servo motor, of the double-lead worm, and a single-row needle roller bearing 10 without an inner ring is installed at one end, close to the servo motor, of the double-lead worm; a worm adjusting sleeve 11 is arranged on the outer side of the single-row tapered roller bearing, the worm adjusting sleeve is fixed on the base through a bolt, and a first worm locking nut 12 and a second worm locking nut 13 are arranged on the outer side of the worm adjusting sleeve; a first mounting hole 14 is formed in the upper box body, and the double-lead worm gear is mounted in the first mounting hole; a worm hole cover 15 connected with the base through a fastener is further arranged on the outer side of the double-lead worm between the upper box body and the lower air brake bottom plate, and a screw-in oil pointer 16 is arranged on the worm hole cover; a rear end cover 17 is arranged on the outer side of one end of the main shaft, and a main shaft flange 18 is arranged on the other end of the main shaft; the end face of the outer side of the rear end cover is inwards sunken to form a counter bore 19 close to one side of the main shaft, and an oil seal 20 is arranged between the counter bore and the main shaft; an oil sealing counter bore 21 penetrating through the first mounting hole is formed in the middle of the upper end of the upper box body, and an oil filling screw plug 22 is mounted on the oil sealing counter bore; and an O-shaped sealing ring is also arranged between the oil filling screw plug and the step of the oil sealing counter bore. And a sealing counter bore 23 is further arranged at one end of the upper box body, a steel ball 24 is arranged in the sealing counter bore, and an inner hexagonal cylinder head fastening screw 25 is arranged at the upper part of the steel ball. And an installation positioning hole 27 is also formed in the upper box body between the oil sealing counter bore and the sealing counter bore, and a fixing screw is arranged in the installation positioning hole. And an oil seal is arranged between one end of the main shaft, which is far away from the rear end cover, and the upper box body and the base. And a thrust bearing 26 is arranged at one end of the end face of the double-lead worm wheel, which is far away from the rear end cover.
A reset assembly 30 is also arranged in the box body. The reset assembly comprises a fixed cylinder 31, and a second mounting hole 32 penetrating through the first mounting hole is formed above the upper box body above the first mounting hole; the fixed cylinder is arranged in the second mounting hole through a fastener, and the end part of the fixed cylinder is provided with an annular fixing piece 33; the annular fixing plate is provided with a through hole positioned in the center and a plurality of threaded holes 34 positioned on the periphery of the through hole; an installation cavity 35 with the outer diameter larger than that of the through hole is formed in the fixed cylinder, a sliding rod 36 is arranged in the installation cavity, a fixed block 37 is arranged at the bottom end of the sliding rod, a spring 38 is sleeved outside the sliding rod, one end of the spring abuts against the fixed block, and the other end of the spring abuts against the annular fixed plate; a supporting column 39 is arranged at one end, far away from the spring, of the fixed block, a braking sheet 40 is arranged at one end of the supporting column, and an annular cushion 41 is arranged at the outer end of the supporting column; one end of the braking sheet is provided with a pair of fixed blocks 44 which are arranged in parallel along the direction of the double-guide-distance turbine, and a roller 45 is arranged between the pair of fixed blocks; a braking gear 46 is arranged on the rolling shaft, and the braking gear is meshed with a double-lead turbine; the braking sheet is provided with a limiting groove 47 matched with the braking gear; a folding piece 48 is arranged at the outer end of the sliding rod, an electric push pump 49 is fixed on the folding piece, a moving push rod 50 is arranged on the electric push pump, and the push rod and the sliding rod are positioned on the same central axis; the push rod is used for pushing the slide rod to move, and then drives the braking piece to brake the braking gear.
A third mounting hole 51 communicated with the first mounting hole is formed in the upper box body; the third mounting hole is the upper part of the first mounting hole; and a fastening and loosening assembly 52 is arranged in the third mounting hole. The tightening and loosening assembly comprises a fixed sleeve 53 inserted into the third mounting hole and a limiting piece 61 into which a slidable main column 54 is inserted; the tail end of the main column is provided with a fixed end piece 55 with the outer diameter larger than that of the main column; a limiting ring 56 is arranged on the outer side wall of the fixing sleeve, a return spring 57 is arranged on the fixing sleeve positioned on one side of the limiting ring, one end of the return spring is propped against the limiting ring 63, and the other end of the return spring is propped against the fixing end piece; the end, far away from the fixed end piece, of the fixed main column is provided with a clamping end piece 58, the limiting piece comprises a pair of limiting columns 59, the tail ends of the limiting columns are provided with rollers 60, the limiting columns are arranged in parallel, a movable gap is formed between the rollers of the limiting columns, and the movable gap is positioned on a movement axis of the clamping end piece; the limiting columns are communicated with the upper box body through connecting pieces 62. The oil pressure in the first mounting hole can be adjusted through the tightening and loosening assembly.
In this embodiment, the double-lead worm rotates, and the electric pump pushes the slide bar to move through the push rod, so as to drive the braking piece to brake the braking gear.
The above embodiments are only used for illustrating the present invention, and the structure, connection mode and the like of each component can be changed, and all equivalent changes and improvements made on the basis of the technical scheme of the present invention should not be excluded from the protection scope of the present invention.
Claims (5)
1. A numerically controlled indexing disk, comprising: a box body; a double-lead worm is transversely arranged in the box body; a main shaft which is horizontally vertical to the double-lead worm is arranged above the double-lead worm, and a double-lead worm wheel meshed with the main shaft is arranged on the main shaft; a transmission shaft of the servo motor is connected with a double-lead worm through a connecting cylinder; the box body comprises a base and an upper box body, an oil sealing counter bore penetrating through a first mounting hole is formed in the middle of the upper end of the upper box body, and an oil filling screw plug is mounted on the oil sealing counter bore; a sealing counter bore is further arranged at one end of the upper box body, a steel ball is arranged in the sealing counter bore, and a fastening screw is arranged at the upper part of the steel ball; an installation positioning hole is further formed in the upper box body between the oil sealing counter bore and the sealing counter bore, and a fixing screw is arranged in the installation positioning hole; the upper box body is provided with a reset assembly, the reset assembly comprises an electric push pump and a fixed cylinder, a braking device is arranged in the fixed cylinder, and the electric push pump is used for pushing the braking device to brake a double-lead turbine;
the fixed cylinder is arranged above the upper box body above the first mounting hole; the end part of the fixed cylinder is provided with an annular fixed sheet; the annular fixing plate is provided with a through hole positioned in the center and a plurality of threaded holes positioned on the periphery of the through hole; an installation cavity with the outer diameter larger than that of the through hole is arranged in the fixed cylinder, a sliding rod is arranged in the installation cavity, a fixed block is arranged at the bottom end of the sliding rod, a spring is sleeved outside the sliding rod, one end of the spring abuts against the fixed block, and the other end of the spring abuts against the annular fixed piece; a supporting column is arranged at one end, far away from the spring, of the fixed block, and a braking sheet is arranged at one end of the supporting column; one end of the braking sheet is provided with a pair of fixed blocks which are arranged in parallel along the direction of the double-guide-distance turbine, and a roller is arranged between the pair of fixed blocks; the rolling shaft is provided with a braking gear, and the braking gear is meshed with the double-lead turbine; the stopping piece is provided with a limiting groove matched with the stopping gear.
2. The numerical control index plate of claim 1 wherein the outer ends of the support posts are provided with annular cushions.
3. The numerical control index plate of claim 1 or 2 wherein the box comprises a base and an upper box, the double lead worm being located between the base and the upper box.
4. The numerical control indexing disc as claimed in claim 1 or 2, wherein the end of the double-lead worm away from the servo motor is provided with a single-row tapered roller bearing, and the end of the double-lead worm adjacent to the servo motor is provided with a single-row needle roller bearing without an inner ring.
5. The numerical control index plate as claimed in claim 4, wherein a worm adjusting sleeve is mounted on the outer side of the single-row tapered roller bearing, the worm adjusting sleeve is fixed on the base through a bolt, and a first worm locking nut and a second worm locking nut are mounted on the outer side of the worm adjusting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551235.4A CN109773583B (en) | 2018-12-18 | 2018-12-18 | Numerical control dividing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551235.4A CN109773583B (en) | 2018-12-18 | 2018-12-18 | Numerical control dividing plate |
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| Publication Number | Publication Date |
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| CN109773583A CN109773583A (en) | 2019-05-21 |
| CN109773583B true CN109773583B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811551235.4A Active CN109773583B (en) | 2018-12-18 | 2018-12-18 | Numerical control dividing plate |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2897537Y (en) * | 2006-04-05 | 2007-05-09 | 吴政男 | Digital-controlled scaling unit with assembled worm |
| CN203317147U (en) * | 2013-07-12 | 2013-12-04 | 嘉兴天合机械有限公司 | Novel numerical control index plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4635507A (en) * | 1984-03-28 | 1987-01-13 | Ckd Kabushiki Kaisha | Angular indexing device and method for output shaft |
| CN201151054Y (en) * | 2007-12-30 | 2008-11-19 | 宁波欣达（集团）有限公司 | Positioning clamp |
| CN201979350U (en) * | 2011-03-24 | 2011-09-21 | 平顶山市东方惠普工贸有限公司 | Fixed-interval indexing head |
| CN202174446U (en) * | 2011-08-01 | 2012-03-28 | 台州金剑机械制造有限公司 | Numerical control dividing apparatus |
| TWM492217U (en) * | 2014-08-14 | 2014-12-21 | Homge Machinery Ind Co Ltd | Delicate CNC index plate structure |
-
2018
- 2018-12-18 CN CN201811551235.4A patent/CN109773583B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2897537Y (en) * | 2006-04-05 | 2007-05-09 | 吴政男 | Digital-controlled scaling unit with assembled worm |
| CN203317147U (en) * | 2013-07-12 | 2013-12-04 | 嘉兴天合机械有限公司 | Novel numerical control index plate |
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