CN111421368A - Adjustable axial positioning device of lathe - Google Patents
Adjustable axial positioning device of lathe Download PDFInfo
- Publication number
- CN111421368A CN111421368A CN202010411471.7A CN202010411471A CN111421368A CN 111421368 A CN111421368 A CN 111421368A CN 202010411471 A CN202010411471 A CN 202010411471A CN 111421368 A CN111421368 A CN 111421368A
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- positioning
- hole
- lathe
- main body
- positioning rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses an adjustable axial positioning device of a lathe, and belongs to the technical field of machinery. The adjustable axial positioning device of the lathe comprises a main body disc, a positioning rod, a clamping pin, a spring, a locking screw, a fastening bolt and a positioning cap. According to the invention, the positioning requirements of parts with different structures can be realized by replacing the positioning cap; the device is connected with the three-jaw chuck of the machine tool through the fastening bolt, the disassembly of the device can be realized without disassembling the three-jaw chuck, the operation is convenient, and the labor is saved; the invention adjusts the fastening screw by a small stroke, realizes the tightness of the positioning rod by the cooperation of the spring force and the conical surface, finishes the adjustment of axial positioning, and has exquisite structure and simple operation.
Description
Technical Field
The invention belongs to the technical field of machinery, relates to an auxiliary tool for lathe machining, and particularly relates to an adjustable axial positioning device for a lathe.
Background
When a part is machined by a lathe, axial positioning is often needed, and in actual production, the axial positioning method of the lathe mainly comprises two methods: one method is that a three-jaw chuck is directly used for directly clamping a part, and the axial size is measured and adjusted through a single piece, the method needs to measure and adjust again for each clamping, so that the repeated workload is large, the efficiency is low, and the measurement error exists in each measurement, and the positioning accuracy is poor; the other method is to separately manufacture the positioning clamp according to the shape of the machined part and the axial positioning requirement in advance, and although the positioning requirement can be met, the manufacturing cost of the positioning clamp is high and the efficiency is low.
Through retrieval, the multipurpose axial positioning gear disc disclosed by the authorization notice number CN 209565856U realizes axial positioning through a step shaft and a steel ball on the gear disc, but the axial positioning size is not adjustable, and the universality is lacked; a numerical control lathe main shaft location structure that No. CN 204277596U said cooperatees through morse's cone and main shaft taper hole and fixes, there is a screw hole in the middle of the morse's cone, the screw rod passes the screw hole and is connected with morse's cone, realize adjusting the axial orientation size of the part processed through the extension length of adjusting the screw rod relative to morse's cone, although this patent can realize that the axial orientation is adjustable, because this location structure is installed in the main shaft, the chuck need be dismantled in every loading and unloading, complex operation, inefficiency, and its morse's cone and main shaft hole contact fit, dismantle the main shaft hole that can be worn and torn many times, reduce the lathe precision.
Disclosure of Invention
In order to solve the technical problem, the invention provides an adjustable axial positioning device of a lathe, which can effectively control the axial size positioning of parts through an adjustable structure aiming at different parts, and has the advantages of quick replacement, quick adjustment, convenient operation, simple structure and good universality, greatly improves the production efficiency and the axial positioning precision, and reduces the cost of designing and manufacturing a positioning clamp.
The technical scheme adopted by the invention is as follows:
an adjustable axial positioning device of a lathe comprises a main body disc 1, a positioning rod 2, a clamping pin 3, a spring 4, a locking screw 5 and a fastening bolt 6.
The main body disc 1 is a step-shaped disc, and a through hole 1-1 is formed in the center of the main body disc; the diameter of the positioning rod 2 is equal to the aperture of the through hole 1-1 in the center of the main body disc, and the positioning rod 2 can pass through the through hole 1-1 to move axially. Three grooves 1-2 which are matched with the clamping jaws of the machine tool chuck are uniformly distributed on the excircle of the main body disc 1, and the three clamping jaws of the three-jaw chuck can move in the three grooves 1-2.
A step hole A1-3 is arranged on the circumferential surface of the lower disc of the main body disc 1, and the step hole A1-3 is communicated with the through hole 1-1; the clamping pin 3 is in a stepped shaft shape, and the spring 4 is sleeved on the stepped shaft of the clamping pin 3 and is placed into the stepped hole A1-3 together with the clamping pin 3. A conical pit 3-1 is arranged on the circumferential surface of the excircle of the clamping pin 3, one end of the locking screw 5 is a cone, and the shape of the cone is matched with that of the conical pit 3-1; the other end of the locking screw 5 is a plane with an internal hexagonal groove so that a hexagonal wrench can screw in and screw out the locking screw. A groove 1-2 of the main body disc 1 is provided with a threaded hole 1-4, and the threaded hole 1-4 is communicated with a stepped hole A1-3; the locking screw 5 is connected with the threaded hole 1-4 through external threads, and the locking screw 5 is screwed into the conical pit 3-1 of the clamping pin 3. The locking screw 5 is screwed in and out, so that the conical end part of the locking screw 5 compresses or loosens the conical pit 3-1 of the clamping pin 3, and the positioning rod 2 is fixed or movable relative to the through hole 1-1; and meanwhile, the axial size positioning of the lathe is adjusted by adjusting the position of the positioning rod 2 relative to the through hole 1-1.
The outer circle end face of the main body disc 1 is provided with three stepped holes B1-5, and the fastening bolt 6 penetrates through the stepped holes B1-5 to be connected with the threaded hole of the three-jaw chuck, so that the main body disc and the machine tool three-jaw chuck are fixed.
Preferably, the positioning rod 2 is provided with scales, so that the positioning size can be conveniently adjusted; an external thread 2-1 is arranged on the excircle of one end of the positioning rod 2 close to the part to be processed, and an internal thread hole 2-2 is arranged at the center of the end face of the positioning rod 2.
Preferably, the lathe adjustable axial positioning device further comprises a positioning cap, the positioning cap is connected with the positioning rod 2 through thread matching, and the positioning caps with different specifications are replaced according to different part size requirements.
Preferably, when the center is required to be positioned in the machining of the slender rod part, the positioning cap A7-1 is selected, the external thread of the positioning cap A7-1 is connected with the internal thread hole 2-2 of the positioning rod in a threaded fit mode, and the center side of the positioning cap A7-1 is in contact with the part to be machined.
Preferably, when the end face positioning is needed in the processing of large-diameter parts, a positioning cap B7-2 is selected, the internal thread of the positioning cap B7-2 is connected with the external thread 2-1 of the positioning rod in a threaded fit mode, and the plane side of the positioning cap B7-2 is in contact with the part to be processed.
Preferably, the end face of the clamping pin 3 is a concave arc surface 3-2, and the concave arc surface 3-2 is adapted to the excircle of the positioning rod 2, so that the clamping area is increased, and the positioning rod is stably and reliably clamped.
The invention has the beneficial effects that: the adjustable axial positioning device for the lathe can realize quick and accurate axial positioning; the positioning requirements of parts with different structures can be met by replacing the positioning cap; the device is connected with the three-jaw chuck of the machine tool through the fastening bolt, the disassembly of the device can be realized without disassembling the three-jaw chuck, the operation is convenient, and the labor is saved; the invention can realize the tightness of the positioning rod by adjusting the fastening screw with a small stroke and utilizing the matching of the spring force and the conical surface to finish the adjustment of axial positioning, and has exquisite structure and simple operation.
Drawings
FIG. 1 is a schematic structural view of an adjustable axial positioning device of a lathe according to the present invention.
FIG. 2 is a front view of the adjustable axial positioning device of the lathe of the present invention.
FIG. 3 is a cross-sectional view of the adjustable axial positioning mechanism of the lathe of the present invention in a released state.
FIG. 4 is a cross-sectional view of the adjustable axial positioning device of the lathe of the present invention in a clamped state.
FIG. 5 is a schematic structural view of an adjustable axial positioning device of a lathe according to the present invention.
FIG. 6 is a schematic view of the structure of the main body disk of the adjustable axial positioning device of the lathe of the present invention.
FIG. 7 is a schematic view of a positioning rod of the adjustable axial positioning device of a lathe according to the present invention.
Fig. 8 is a schematic view of a clamp pin structure in the adjustable axial positioning device of the lathe of the invention.
In the figure: 1 a main body tray; 2, positioning a rod; 3 clamping the pin; 4, a spring; 5 locking the screw; 6 fastening the bolt; 1-1 through hole; 1-2 grooves; 1-3 step holes A; 1-4 threaded holes; 1-5 step holes B; 2-1 external threads; 2-2 of an internal threaded hole; 3-1 conical pits; 3-2 concave arc surfaces; 7-1, positioning a cap A; 7-2 positioning the cap B.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more complete and thorough understanding of the present invention.
As shown in fig. 1 and 5, the adjustable axial positioning device for the lathe comprises a main body disc 1, a positioning rod 2, a clamping pin 3, a spring 4, a locking screw 5, a fastening bolt 6 and a positioning cap.
According to the positioning requirement of the processed part, selecting a required positioning cap: when the center is required to be positioned during processing of the slender rod type part, a positioning cap A7-1 is selected, and the external thread of the positioning cap A7-1 is connected with the internal thread hole 2-2 of the positioning rod in a threaded fit manner; when the end face positioning is needed in the processing of large-diameter parts, a positioning cap B7-2 is selected, and the internal thread of the positioning cap B7-2 is connected with the external thread 2-1 of the positioning rod in a threaded fit mode.
Sleeving the spring 4 on the stepped shaft of the clamping pin 3, and putting the spring 4 and the stepped shaft together into a stepped hole A1-3 on the circumferential surface of the disc below the main body disc 1; the clamping pin 3 is adjusted in a rotating mode, so that a conical pit 3-1 in the outer circular surface of the clamping pin 3 corresponds to a threaded hole 1-4 in a groove 1-2 of the main body disc 1, and under the elastic force action of the spring 4, the center of the conical pit 3-1 of the clamping pin 3 is staggered for a certain distance relative to the center of the threaded hole 1-4. The positioning rod 2 with the positioning cap A7-1 or the positioning cap B7-2 installed is placed in a central through hole 1-1 of the main body disc 1, the positioning rod 2 is adjusted to a required position by referring to scales on the positioning rod 2 according to the positioning size requirement of a machined part, the fastening screw 5 is screwed into the threaded hole 1-4 until the fastening screw 5 is screwed into a conical pit 3-1 on the surface of the clamping pin 3, the clamping pin 3 is locked, and then the position fixing of the positioning rod 2 is realized.
And (3) corresponding the three grooves 1-2 of the installed main body disc to three claws of the three-claw chuck of the machine tool, and screwing the fastening bolt 6 into the stepped hole B1-5 on the excircle end surface of the main body disc 1 and the three-claw chuck of the machine tool to fixedly connect the main body disc and the three-claw chuck of the machine tool.
Through unscrewing and screwing up fastening screw 5, the activity and the fixed of adjustment clamp pin 3 realize the adjustment of the axial position of locating lever 2, satisfy the location needs of part man-hour.
The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention by those skilled in the art.
Claims (5)
1. The adjustable axial positioning device of the lathe is characterized by comprising a main body disc (1), a positioning rod (2), a clamping pin (3), a spring (4), a locking screw (5) and a fastening bolt (6);
the main body disc (1) is a step-shaped disc, and a through hole (1-1) is formed in the center of the main body disc; the diameter of the positioning rod (2) is equal to the aperture of the through hole (1-1), and the positioning rod (2) passes through the through hole (1-1) to move axially; three grooves (1-2) which are matched with the clamping jaws of the machine tool chuck are uniformly distributed on the excircle of the main body disc (1) in an equal distribution manner, and the three clamping jaws of the three-jaw chuck can move in the three grooves (1-2);
a step hole A (1-3) is arranged on the circumferential surface of the lower disc of the main body disc (1), and the step hole A is communicated with the through hole (1-1); the clamping pin (3) is in a stepped shaft shape, and the spring (4) is sleeved on the clamping pin (3) and is placed into the stepped hole A (1-3) along with the clamping pin; a groove (1-2) of the main body disc (1) is provided with a threaded hole (1-4), and the threaded hole (1-4) is communicated with the stepped hole A (1-3); a conical pit (3-1) is arranged on the circumferential surface of the excircle of the clamping pin (3); one end of the locking screw (5) is a cone, and the cone is adapted to the cone pit (3-1); the other end of the locking screw (5) is a plane with an inner hexagonal groove; the locking screw (5) is screwed in and out of the conical pit (3-1) through the threaded hole (1-4), so that the positioning rod (2) is fixed or adjusted in position relative to the through hole (1-1), and the axial size positioning of the lathe is adjusted;
three stepped holes B (1-5) are formed in the end face of the outer circle of the main body disc (1), and the fastening bolt (6) penetrates through the stepped holes B (1-5) to be connected with the three-jaw chuck of the machine tool, so that the main body disc and the three-jaw chuck of the machine tool are fixed.
2. The adjustable axial positioning device of the lathe as claimed in claim 1, wherein the positioning rod (2) is provided with scales to facilitate adjustment of positioning size; an external thread (2-1) is arranged on the outer circle of one end of the positioning rod (2) close to the processed part, and an internal thread hole (2-2) is arranged at the center of the end face of the positioning rod (2).
3. The adjustable axial positioning device for the lathe as claimed in claim 2, further comprising a positioning cap A (7-1), wherein when the center of the elongated rod part to be machined needs to be positioned, the external thread of the positioning cap A (7-1) is connected with the internal thread hole (2-2) of the positioning rod in a threaded fit mode, and the center side of the positioning cap A (7-1) is in contact with the part to be machined.
4. The adjustable axial positioning device for the lathe as claimed in claim 2, further comprising a replaceable positioning cap B (7-2), when end face positioning is required for processing large-diameter parts, the internal thread of the positioning cap B (7-2) is connected with the external thread (2-1) of the positioning rod in a threaded fit mode, and the plane side of the positioning cap B (7-2) is in contact with the parts to be processed.
5. The adjustable axial positioning device for the lathe according to any one of claims 1 to 4, characterized in that the end surface of the clamping pin (3) is a concave circular arc surface (3-2), and the concave circular arc surface (3-2) is adapted to the outer circle of the positioning rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411471.7A CN111421368A (en) | 2020-05-15 | 2020-05-15 | Adjustable axial positioning device of lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411471.7A CN111421368A (en) | 2020-05-15 | 2020-05-15 | Adjustable axial positioning device of lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111421368A true CN111421368A (en) | 2020-07-17 |
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ID=71550936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010411471.7A Pending CN111421368A (en) | 2020-05-15 | 2020-05-15 | Adjustable axial positioning device of lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111421368A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843426A (en) * | 2021-10-20 | 2021-12-28 | 大连瑞谷科技有限公司 | Fixtures for bearing cages |
| CN115625353A (en) * | 2022-11-22 | 2023-01-20 | 中国航发贵州红林航空动力控制科技有限公司 | Axial rapid and accurate positioning method for numerical control turning |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102955A (en) * | 1987-04-21 | 1988-11-09 | 武汉钢铁公司专利管理室 | Combined core-axle |
| EP0293331B1 (en) * | 1987-05-29 | 1993-03-31 | Nokia-Maillefer S.A. | Extrusion equipment for applying a plastic sheath to a wire |
| EP1738864A2 (en) * | 2005-07-01 | 2007-01-03 | OTT-JAKOB GmbH & Co. Spanntechnik KG | Clamping device |
| CN201300324Y (en) * | 2008-12-02 | 2009-09-02 | 上海无线电设备研究所 | Special tool for processing of isolator part rotating axle |
| CN202894781U (en) * | 2012-09-26 | 2013-04-24 | 溧阳市瑞丰金属制品有限公司 | Positioning clamp for processing excircle of valve core |
| CN205927893U (en) * | 2016-07-25 | 2017-02-08 | 吉林昊宇电气股份有限公司 | Adjustable center support |
| CN207155334U (en) * | 2017-06-27 | 2018-03-30 | 湖北三江航天红阳机电有限公司 | A kind of general adjustable axial direction positioning device of lathe |
| CN209021356U (en) * | 2018-09-26 | 2019-06-25 | 昆山华恒焊接股份有限公司 | Pipe fitting sizing centering feedback regulation component and the retaining wall on slope equipment with the component |
-
2020
- 2020-05-15 CN CN202010411471.7A patent/CN111421368A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102955A (en) * | 1987-04-21 | 1988-11-09 | 武汉钢铁公司专利管理室 | Combined core-axle |
| EP0293331B1 (en) * | 1987-05-29 | 1993-03-31 | Nokia-Maillefer S.A. | Extrusion equipment for applying a plastic sheath to a wire |
| EP1738864A2 (en) * | 2005-07-01 | 2007-01-03 | OTT-JAKOB GmbH & Co. Spanntechnik KG | Clamping device |
| CN201300324Y (en) * | 2008-12-02 | 2009-09-02 | 上海无线电设备研究所 | Special tool for processing of isolator part rotating axle |
| CN202894781U (en) * | 2012-09-26 | 2013-04-24 | 溧阳市瑞丰金属制品有限公司 | Positioning clamp for processing excircle of valve core |
| CN205927893U (en) * | 2016-07-25 | 2017-02-08 | 吉林昊宇电气股份有限公司 | Adjustable center support |
| CN207155334U (en) * | 2017-06-27 | 2018-03-30 | 湖北三江航天红阳机电有限公司 | A kind of general adjustable axial direction positioning device of lathe |
| CN209021356U (en) * | 2018-09-26 | 2019-06-25 | 昆山华恒焊接股份有限公司 | Pipe fitting sizing centering feedback regulation component and the retaining wall on slope equipment with the component |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843426A (en) * | 2021-10-20 | 2021-12-28 | 大连瑞谷科技有限公司 | Fixtures for bearing cages |
| CN115625353A (en) * | 2022-11-22 | 2023-01-20 | 中国航发贵州红林航空动力控制科技有限公司 | Axial rapid and accurate positioning method for numerical control turning |
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Application publication date: 20200717 |