CN219336815U - Multi-station workpiece positioning device of numerical control machine tool - Google Patents
Multi-station workpiece positioning device of numerical control machine tool Download PDFInfo
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- CN219336815U CN219336815U CN202223603915.0U CN202223603915U CN219336815U CN 219336815 U CN219336815 U CN 219336815U CN 202223603915 U CN202223603915 U CN 202223603915U CN 219336815 U CN219336815 U CN 219336815U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a multi-station workpiece positioning device of a numerical control machine tool, which comprises: a substrate; the expansion sleeve is arranged on the base plate; the positioning shoulder rests are arranged on the base plate and are arranged at the periphery of the expansion sleeve at intervals, and a station for placing a workpiece is arranged between the positioning shoulder rests and the expansion sleeve; the expansion adjusting mechanism is connected with the expansion sleeve and is used for adjusting the expansion sleeve to expand towards the positioning shoulder in the radial direction so as to clamp the workpiece or shrink away from the positioning shoulder so as to loosen the workpiece. The positioning device can realize clamping and positioning of a plurality of stations, does not occupy excessive space, and has the characteristic of simple structure.
Description
Technical Field
The utility model relates to the technical field of numerical control machine tools, in particular to a multi-station workpiece positioning device of a numerical control machine tool.
Background
In the process of machining a workpiece by a numerical control machine tool, it is important that the workpiece can be fastened at a specific position, so that a positioning device is commonly used at present to position and clamp the workpiece so as to prevent the workpiece from being displaced, inclined and the like in the machining process and improve the defective rate. In order to improve the efficiency of a numerical control machine tool for processing workpieces, the existing positioning device is generally a multi-station workpiece positioning device, so that one positioning device can clamp and position a plurality of workpieces to realize simultaneous processing of the workpieces. However, a plurality of stations of the existing multi-station workpiece positioning device are mostly arranged along the transverse direction and/or the longitudinal direction, each station is matched with a clamping device, the structure is complex, meanwhile, a large space is reserved between adjacent stations, the number of stations is limited, and the positioning device is large in size and is not suitable for being popularized and used in a large range.
Disclosure of Invention
In order to overcome at least one defect in the prior art, the utility model provides a multi-station workpiece positioning device of a numerical control machine tool, which can realize clamping and positioning of a plurality of stations without excessively occupying space and has the characteristic of simple structure.
The utility model adopts the technical proposal for solving the problems that:
a multi-station workpiece positioning device of a numerical control machine tool, comprising:
a substrate;
the expansion sleeve is arranged on the base plate;
the positioning shoulder rests are arranged on the base plate and are arranged at the periphery of the expansion sleeve at intervals, and a station for placing a workpiece is arranged between the positioning shoulder rests and the expansion sleeve;
the expansion adjusting mechanism is connected with the expansion sleeve and is used for adjusting the expansion sleeve to expand towards the positioning shoulder in the radial direction so as to clamp the workpiece or shrink away from the positioning shoulder so as to loosen the workpiece.
Further, the expansion adjusting mechanism comprises an adjusting screw, a screwing nut and an elastic piece, the elastic piece is sleeved on the periphery of the top of the expansion sleeve, the expansion sleeve is provided with a through hole which axially penetrates through and is matched with the adjusting screw, the through hole penetrates through the base plate along the vertical direction, the adjusting screw penetrates through the through hole from top to bottom and can move up and down, and the screwing nut is arranged at the bottom of the base plate and can be in threaded connection with the adjusting screw.
Further, the expansion adjusting mechanism further comprises a stretching device arranged at the bottom of the base plate, and the stretching device is connected with the adjusting screw through a screwing nut.
Further, the stretching device comprises a driving part, an output shaft and a base, wherein the output shaft is connected with the output end of the driving part and extends downwards, the base is sleeved on the output shaft and is vertically arranged with the output shaft, the base is provided with a hole through which an adjusting screw can penetrate, the adjusting screw is connected with the base through a screwing nut, and the axial direction of the adjusting screw is parallel to the axial direction of the output shaft.
Further, the driving part is electrically connected with a control mechanism.
Further, the driving part is fixedly connected with the bottom of the base plate, the top of the base is provided with a partition piece, and the partition piece is of an elastic structure.
Further, the shapes of the positioning shoulder rest and the side parts of the expansion sleeve corresponding to the stations are matched with the side parts of the workpiece.
Further, in the horizontal direction, the centers of the positioning shoulder rest, the workpiece and the expansion sleeve are on a straight line.
Further, the positioning shoulder rest and the expansion sleeve are detachably connected with the base plate.
Further, the station is provided with a plurality of supporting members which are spaced and uniformly distributed to support the workpiece.
The beneficial effects are that:
according to the positioning device, the plurality of positioning shoulder rests are arranged on the periphery of the expansion sleeve, so that a plurality of work-piece placing stations are formed on the periphery of the expansion sleeve, the multi-station is ensured, the space is greatly saved, and the positioning device has a smaller size. In addition, the positioning device can clamp and position a plurality of workpieces on the periphery of the expansion sleeve through the cooperation of one or more expansion sleeves and a group of expansion adjusting mechanisms, has a simple and compact structure and is convenient to operate, and the positioning efficiency of the workpieces is improved.
Drawings
FIG. 1 is an exploded view of a multi-station workpiece positioning apparatus in an embodiment;
FIG. 2 is a schematic structural diagram of a multi-station workpiece positioning device according to an embodiment;
fig. 3 is a schematic view of a portion of a multi-station workpiece positioning apparatus without a workpiece in an embodiment.
Wherein the reference numerals have the following meanings:
1. a substrate; 2. an expansion sleeve; 21. a through hole; 3. positioning the shoulder rest; 4. a workpiece; 5. a station; 6. an adjusting screw; 7. screwing the nut; 8. an elastic member; 9. a support; 10. a stretching device; 11. a spacer; 12. a fastening ring.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The embodiment discloses a multi-station workpiece positioning device of a numerical control machine tool, so that a plurality of workpieces 4 needing to be processed by the numerical control machine tool are clamped and positioned through the positioning device. Referring to fig. 1, the positioning device includes a base plate 1, at least one expandable and contractible expansion sleeve 2 is installed on the top surface of the base plate 1, taking fig. 1 as an example, two expansion sleeves 2 are installed on the base plate 1 at intervals, and in practical application, the number of the expansion sleeves 2 can be adjusted according to the number of workpieces 4 to be positioned. The expansion sleeve 2 is of a cylindrical-like structure, the axial direction of the expansion sleeve is vertical to the base plate 1, a plurality of positioning leaning shoulders 3 are arranged at intervals on the periphery of each expansion sleeve 2, the positioning leaning shoulders 3 are arranged on the base plate 1, a distance is arranged between each positioning leaning shoulder 3 and the corresponding expansion sleeve 2, the size of the distance is not smaller than the radial dimension of the workpiece 4, a station 5 (see figure 3) is formed between the positioning leaning shoulder 3 and the expansion sleeve 2, the workpiece 4 can be placed at the station 5, and the workpiece 4 is clamped and positioned by the expansion sleeve 2 and the positioning leaning shoulder 3 through radial expansion of the expansion sleeve 2. According to the positioning device of the embodiment, the plurality of positioning leaning shoulders 3 are arranged on the periphery of the expansion sleeve 2 and the expansion sleeve 2, so that a plurality of stations 5 for placing the workpiece 4 are formed on the periphery of the expansion sleeve 2, multiple stations are guaranteed, meanwhile, space is greatly saved, and the positioning device has a small size.
In order to realize stable clamping and positioning of the workpiece 4, the shapes of the positioning shoulder 3 and the side parts of the expansion sleeve 2 corresponding to the station 5 are matched with the side parts of the workpiece 4. Taking a cylindrical workpiece 4 as an example, the machining position of the workpiece 4 in the structure is generally two circular end parts, so that when the workpiece 4 is placed at a station 5, the axial direction of the workpiece 4 is vertical to the substrate 1, the side part of the positioning shoulder 3 and the expansion sleeve 2, which faces the workpiece 4, is in a circular arc structure, the radian of the circular arc structure is matched with the radian of the side part of the workpiece 4, and a connecting line of the circle centers of the circular arc structures of the positioning shoulder 3 and the expansion sleeve 2 penetrates through the circle center of the circular end part of the workpiece 4. Thus, the positioning shoulder rest 3 and the expansion sleeve 2 can realize accurate positioning of a plurality of workpieces 4.
Further, the positioning shoulder rest 3 and the expansion sleeve 2 are detachably connected with the base plate 1, so that the corresponding positioning shoulder rest 3 and expansion sleeve 2 can be replaced according to the shape of the workpiece 4, and the application range of the positioning device is improved. The positioning shoulder rest 3 of the embodiment is detachably connected with the base plate 1 through a bolt and nut assembly.
Referring to fig. 1 and 2, the contraction and expansion of the expansion sleeve 2 of the present embodiment is achieved by an expansion adjustment mechanism by which the expansion sleeve 2 is adjusted to expand radially toward the positioning shoulder 3 to clamp the workpiece 4 or to contract away from the positioning shoulder 3 to loosen the workpiece 4. Therefore, the positioning device of the embodiment can clamp and position a plurality of workpieces 4 on the periphery side of the expansion sleeve 2 through the matching of one or a plurality of expansion sleeves 2 and a group of expansion adjusting mechanisms, has a simple and compact structure and is convenient to operate, and the positioning efficiency of the workpieces 4 is improved.
Specifically, the tight adjustment mechanism expands includes adjusting screw 6, screw nut 7 and elastic component 8, elastic component 8 cover is established at the top periphery of tight cover 2 expands, tight cover 2 expands and is equipped with the through-hole 21 that runs through axially and with adjusting screw 6 looks adaptation to through-hole 21 runs through base plate 1 along vertical direction, adjusting screw 6 top-down passes through-hole 21 and can reciprocate, adjusting screw 6 downward movement can make the expansion of the tight cover 2 and elastic component 8 be expanded and extend, adjusting screw 6 upward movement, elastic component 8 kick-backs so that tight cover 2 contracts, screw nut 7 is established in the below of base plate 1 and can with adjusting screw 6 threaded connection, the rotatory angle of screw nut 7 is different, it is different to adjust the pretightning force of screw 6. When the workpiece 4 is required to be clamped and positioned, the adjusting screw 6 is pulled down to a required position and locked by the screwing nut 7, so that the expansion sleeve 2 expands and clamps the workpiece 4 with the positioning shoulder 3, and the simultaneous clamping and positioning of a plurality of workpieces 4 is realized.
Referring to fig. 1 and 2, the adjusting screw 6 is pulled down by the stretching device 10, the stretching device 10 is arranged below the base plate 1, the stretching device 10 comprises a driving part 101, an output shaft 102 and a base 103, the output shaft 102 is connected with the output end of the driving part 101 and extends downwards, the base 103 is sleeved on the output shaft 102, the base 103 is perpendicular to the output shaft 102, the base 103 is provided with a hole for the adjusting screw 6 to penetrate, the adjusting screw 6 is connected with the base 103 through a screwing nut 7, and the axial direction of the adjusting screw 6 is parallel to the axial direction of the output shaft. Specifically, each adjusting screw 6 corresponds to two tightening nuts 7, and the rotation directions of the two tightening nuts 7 are opposite, so as to realize the change of the pretightening force of the adjusting screw 6. The driving part 101 drives the output shaft 102 to extend downwards to drive the base 103 to move downwards, the adjusting screw 6 is pulled downwards to expand the expansion sleeve 2 and clamp the workpieces 4 with the positioning shoulder 3, so that the simultaneous clamping and positioning of a plurality of workpieces 4 are realized, and the elastic piece 8 is stretched at the moment; when the workpiece 4 needs to be loosened, the driving part 101 drives the output shaft 102 to shrink upwards, the base 103 is driven to move upwards, the adjusting screw 6 returns upwards, the elastic piece 8 shrinks and rebounds, and the expansion sleeve 2 shrinks and loosens the workpiece 4. According to the embodiment, through the arrangement of the stretching device 10, the simultaneous pulling-down of the plurality of adjusting screws 6 can be realized through the stretching device 10, so that the simultaneous clamping and positioning of the plurality of workpieces 4 on the periphery sides of the plurality of expansion sleeves 2 can be realized, and the efficiency is high.
The driving unit 101 of the present embodiment may be a hydraulic pump, a cylinder, or the like, and the corresponding output shaft 102 may be a piston rod, a telescopic rod, or the like.
Further, the driving portion 101 may be electrically connected with a control mechanism, and the control mechanism may be a numerically controlled machine tool control mechanism, so that the pull-down length of the adjusting screw 6 and the pretightening force of the adjusting screw 6 by screwing the nut 7 are automatically achieved through the control mechanism, so as to adapt to different workpieces 4.
Referring to fig. 1, the driving portion 101 is fixed at the bottom of the substrate 1, the top of the base 103 is provided with a spacer 11, and the spacer 11 is of an elastic structure and has a buffering effect, so that the impact of the output shaft 102 on the driving portion 101 when contracting upwards is avoided from being too large and generating a large impact force on the substrate 1.
In addition, the station 5 is provided with a plurality of supporting members 9, and the plurality of supporting members 9 are uniformly distributed at the bottom of the workpiece 4, so that the workpiece 4 can be supported by the plurality of supporting members 9, and a gap exists between the workpiece 4 and the substrate 1, and chips can be cleaned conveniently after the workpiece 4 is processed.
The working process of the positioning device of this embodiment is as follows:
1) Before machining, a positioning shoulder 3 and an expansion sleeve 2 which are matched with a workpiece 4 to be machined are arranged on a positioning device, an adjusting screw 6 penetrates through a through hole 21 and a hole of a base 103 and is locked by a screwing nut 7, and a fastening ring 12 is sleeved on the periphery of the top of the expansion sleeve 2 so as to prevent the expansion sleeve 2 from expanding;
2) The workpiece 4 is loaded and placed at the station 5 through a machine tool, the workpiece 4 is supported by the supporting piece 9, and the connecting line of the circle centers of the circular arc structures of the positioning shoulder 3 and the expansion sleeve 2 is ensured to penetrate through the circle center of the workpiece 4;
3) Starting the stretching device 10, driving the output shaft 102 to extend downwards by the driving part 101 to drive the base 103 to move downwards, simultaneously pulling down the plurality of adjusting screws 6 to the designated position, locking the adjusting screws 6 with the required pretightening force by screwing the nuts 7 according to the requirement of the workpiece 4, expanding the expansion sleeve 2 and clamping the workpiece 4 with the positioning shoulder 3 at the moment, and expanding the elastic piece 8 to be in an elongated state;
4) The numerical control machine tool processes the workpiece 4;
5) After the processing is finished, the stretching device 10 is closed, the output shaft 102 is contracted upwards to drive the base 103 to move upwards, the adjusting screws 6 return upwards, the elastic piece 8 is contracted and rebounded to enable the expanding sleeve 2 to be contracted, and therefore the workpiece 4 is loosened to facilitate blanking of the machine tool.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. A multi-station workpiece positioning device of a numerical control machine tool, comprising:
a substrate;
the expansion sleeve is arranged on the base plate;
the positioning shoulder rests are arranged on the base plate, are arranged on the periphery of the expansion sleeve at intervals, and a station for placing a workpiece is arranged between the positioning shoulder rests and the expansion sleeve;
the expansion adjusting mechanism is connected with the expansion sleeve and is used for adjusting the expansion sleeve to expand towards the positioning shoulder in the radial direction so as to clamp the workpiece or shrink away from the positioning shoulder so as to loosen the workpiece.
2. The multi-station workpiece positioning device of a numerical control machine according to claim 1, wherein: the expansion adjusting mechanism comprises an adjusting screw screwing nut and an elastic piece, the elastic piece is sleeved on the periphery of the top of the expansion sleeve, the expansion sleeve is provided with a through hole which axially penetrates through and is matched with the adjusting screw, the through hole penetrates through the base plate in the vertical direction, the adjusting screw (6) penetrates through the through hole from top to bottom and can move up and down, and the screwing nut is arranged below the base plate and is in threaded connection with the adjusting screw.
3. The multi-station workpiece positioning device of a numerical control machine according to claim 2, wherein: the expansion adjusting mechanism further comprises a stretching device arranged at the bottom of the base plate, and the stretching device is connected with the adjusting screw through the screwing nut.
4. A multi-station workpiece positioning device of a numerical control machine according to claim 3, wherein: the stretching device comprises a driving part, an output shaft and a base, wherein the output shaft is connected with the output end of the driving part and extends downwards, the base is sleeved on the output shaft, the base is perpendicular to the output shaft, the base is provided with a hole through which an adjusting screw penetrates, the adjusting screw is connected with the base through a screwing nut, and the axial direction of the adjusting screw is parallel to the axial direction of the output shaft.
5. The multi-station workpiece positioning device of the numerical control machine tool according to claim 4, wherein: the driving part is electrically connected with a control mechanism.
6. The multi-station workpiece positioning device of the numerical control machine tool according to claim 4, wherein: the driving part is fixedly connected with the bottom of the substrate, a partition piece is arranged at the top of the base, and the partition piece is of an elastic structure.
7. The multi-station workpiece positioning device of a numerical control machine according to claim 1, wherein: the shapes of the positioning shoulder rest and the side parts of the expansion sleeve corresponding to the stations are matched with the side parts of the workpiece.
8. The multi-station workpiece positioning device of the numerical control machine tool according to claim 7, wherein: in the horizontal direction, the centers of the positioning shoulder rest, the workpiece and the expansion sleeve are on the same straight line.
9. The multi-station workpiece positioning device of a numerical control machine according to claim 1, wherein: the positioning shoulder rest and the expansion sleeve are detachably connected with the base plate.
10. The multi-station workpiece positioning device of a numerical control machine according to claim 1, wherein: the station is provided with a plurality of supporting pieces which are uniformly distributed at intervals to support the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223603915.0U CN219336815U (en) | 2022-12-30 | 2022-12-30 | Multi-station workpiece positioning device of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223603915.0U CN219336815U (en) | 2022-12-30 | 2022-12-30 | Multi-station workpiece positioning device of numerical control machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN219336815U true CN219336815U (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223603915.0U Active CN219336815U (en) | 2022-12-30 | 2022-12-30 | Multi-station workpiece positioning device of numerical control machine tool |
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| Country | Link |
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| CN (1) | CN219336815U (en) |
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- 2022-12-30 CN CN202223603915.0U patent/CN219336815U/en active Active
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