CN107891162B - Automatic clamp for grooving end surfaces of thin side plates - Google Patents
Automatic clamp for grooving end surfaces of thin side plates Download PDFInfo
- Publication number
- CN107891162B CN107891162B CN201711331979.0A CN201711331979A CN107891162B CN 107891162 B CN107891162 B CN 107891162B CN 201711331979 A CN201711331979 A CN 201711331979A CN 107891162 B CN107891162 B CN 107891162B
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- China
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- core
- cone
- clamp
- workpiece
- expansion
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- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
Abstract
The invention discloses an automatic clamp for turning grooves on the end surfaces of thin side plates, which is characterized in that: the clamp disc is provided with a cone core at the center, the left end of the cone core is a cylinder, and the right end of the cone core is a cone; the end face of the clamp disc is provided with a groove which is wider than the workpiece, the groove bottom is lower than the cylindrical end face of the cone core, and the groove is symmetrical to the center of the clamp disc; the clamp pull rod passes through the central through hole of the cone core, the left end of the clamp pull rod is in threaded connection with the lathe pull rod, and the right end of the clamp pull rod is provided with the expansion core; the expansion core is of a cylindrical structure, the left end of the expansion core is provided with an inner conical hole matched with the conical body of the conical core to form a conical surface expansion structure, and the inner conical hole is provided with a radial open slot; an inner hole of the clamped workpiece is sleeved on the expansion core, and the end face of the workpiece is leaned against the cylindrical end face of the cone core and is clamped in a groove on the end face of the clamp disc; the expansion core moves reciprocally, and expands or loosens the clamped workpiece; when the expansion core expands the workpiece, the workpiece is axially pulled to be abutted against the cylindrical end face of the cone core. The invention is suitable for turning the end face groove of the thin side plate.
Description
Technical Field
The invention relates to a machine tool accessory, in particular to an automatic fixture for turning grooves on the end surfaces of thin side plates for an automatic lathe, belonging to a fixture in the machining industry.
Background
At present, an end face groove of a thin side plate is generally machined by an end mill on a machining center, so that the machining quality is poor, the productivity is low, the end mill loss is high, and the difficulty for machining a narrow groove is higher. The reason for this is that the thin side plate is difficult to clamp on the lathe, and the end face groove of the thin side plate cannot be machined by the turning method. According to the invention, aiming at the problems, the automatic clamp for turning the groove on the end surface of the thin side plate is designed, the problem of automatic clamping of the thin side plate on a lathe is well solved, the turning of the groove on the end surface of the thin side plate is realized, and the processing quality and the productivity are improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an automatic clamp for turning grooves on the end surfaces of thin side plates, which can realize automatic clamping of the thin side plates on a lathe and carry out turning on the end surfaces of the thin side plates, thereby improving the machining precision, the machining surface quality and the machining efficiency.
The aim of the invention can be achieved by the following technical scheme:
an automatic clamp for turning grooves on the end surfaces of thin side plates is characterized in that: a cylindrical disc-shaped clamp disc is arranged, a cone core is arranged at the center of the clamp disc, a groove is formed in the end face of the clamp disc, the groove is wider than a workpiece, the groove bottom is lower than the cylindrical end face of the cone core, the groove is symmetrical to the center of the clamp disc, and the clamp disc is fixed on a main shaft flange of a lathe by a first hexagon socket head cap screw and a first spring washer;
the left end of the cone core is a cylinder, the right end of the cone core is a cone, and the center of the cone core is provided with a through hole;
the clamp pull rod passes through the central through hole of the cone core, the left end of the clamp pull rod is in threaded connection with the lathe pull rod, and the right end of the clamp pull rod is provided with the expansion core;
the expansion core is of a cylindrical structure, the left end of the expansion core is provided with an inner conical hole matched with the conical body of the conical core to form a conical surface expansion structure, and the inner conical hole is provided with a radial open slot;
an inner hole of the clamped workpiece is sleeved on the expansion core, the end face of the workpiece is abutted against the cylindrical end face of the cone core, and the workpiece is clamped in an end face groove of the clamp disc;
when the expansion core retreats along with the clamp pull rod, the inner conical hole of the expansion core is axially propped by the cone of the cone core to be radially spread, so that the expansion core radially expands the inner hole of the workpiece to realize clamping, and simultaneously, the expansion core axially pulls the workpiece to be abutted against the cylindrical end surface of the cone core; when the expansion core stretches out along with the clamp pull rod, the expansion core radially recovers to the original state to loosen the workpiece.
The automatic clamp for turning the groove on the end face of the thin side plate is also characterized in that: and 6 or 8 equally-divided open grooves are formed in the inner taper hole at the left end of the expansion core, and the outer cylindrical surface at the left end of the expansion core is in clearance fit with the inner hole of the clamped workpiece in the unclamped state.
The automatic clamp for turning the groove on the end face of the thin side plate is also characterized in that: the expansion core is made of spring steel, is subjected to heat treatment and has elasticity.
The automatic clamp for turning the groove on the end face of the thin side plate is also characterized in that: the outer cylindrical surface of the cone core cylinder end is in transition fit with a hole in the center of the clamp disc, and the cone at the right end of the cone core is concentric with the main shaft of the machine tool.
The automatic clamp for turning the groove on the end face of the thin side plate is also characterized in that: a gap is reserved between the right end of the clamp pull rod and the central through hole of the cone core, so that the centering effect is not achieved; a gap is reserved between the groove on the end face of the clamp disc and the workpiece in the width direction, so that the positioning effect is not realized; the positioning of the workpiece is determined by a conical surface expansion structure formed by a conical core and an expansion core. The cutting torque during processing is mainly transmitted to the workpiece through the grooves on the end face of the clamp disc.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention realizes the automatic clamping of the thin side plate on the lathe in an inward expansion mode, and has high clamping precision;
(2) In the internal expansion conical surface structure, the expansion core axially pulls the workpiece while expanding the workpiece so as to be abutted against the cylindrical end surface of the conical core; the cutting torque during processing is mainly transmitted to the workpiece through the groove on the end surface of the clamp disc;
(3) The power for clamping the workpiece comes from the rotary cylinder or the rotary cylinder of the lathe, so that the mechanization is realized, the labor intensity of operators is reduced, the workpiece can be rapidly clamped, the use is convenient, and the working efficiency is high.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a cross-sectional view taken along section A-A of FIG. 1;
FIG. 3 is an enlarged partial view of the central portion of the present invention;
FIG. 4 is a three-dimensional block diagram of the work piece (8) and the expanding core (9) of the present invention.
In the figure: the clamping device comprises a 1-clamp pull rod, a 2-clamp disc, a 3-first inner hexagonal cylindrical head screw, a 4-first spring washer, a 5-cone core, a 6-second inner hexagonal cylindrical head screw, a 7-second spring washer, an 8-workpiece, a 9-expansion core, a 10-gasket, a 11-third inner hexagonal cylindrical head screw, a 12-third spring washer, a 13-lathe spindle flange and a 14-lathe pull rod.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific embodiments.
Referring to fig. 1, 2, 3 and 4, the structure of the automatic fixture for grooving the end surface of the thin side plate in this embodiment is as follows: the clamp disc 2 is a cylindrical disc body, a cone core 5 is arranged at the center of the clamp disc 2, a groove is formed in the end face of the clamp disc 2, the groove is wider than a workpiece 8, the bottom of the groove is lower than the cylindrical end face of the cone core 5, the groove is symmetrical to the center of the clamp disc 2, and the clamp disc 2 is fixed on a lathe spindle flange 13 by a first hexagon socket head cap screw 3 and a first spring washer 4; the left end of the cone core 5 is a cylinder, the right end is a cone, and a through hole is formed in the center of the cone core 5; the cone core 5 is fixed at the center of the clamp disc 2 by a second inner hexagonal socket head cap screw 6 and a second spring washer 7, the clamp pull rod 1 passes through a central through hole of the cone core 5, the left end of the clamp pull rod 1 is in threaded connection with a lathe pull rod 14, the right end of the clamp pull rod 1 is provided with an expansion core 9, and the expansion core 9 is fixed by a gasket 10, a third inner hexagonal socket head cap screw 11 and a third spring washer 12; the expansion core 9 is of a cylindrical structure, the left end of the expansion core 9 is provided with an inner taper hole, and the inner taper hole is provided with a radial open slot; the inner cone hole of the expansion core 9 is sleeved on the cone at the right end of the cone core 5 to form a cone expansion structure; the inner hole of the clamped workpiece 8 is sleeved on the expansion core 9, the end face of the workpiece is abutted against the cylindrical end face of the cone core 5, and the workpiece 8 is clamped in an end face groove of the clamp disc 2; when the expansion core 9 retreats along with the clamp pull rod 1, the inner conical hole of the expansion core 9 is axially propped by the cone of the conical core 5 to be radially propped open, so that the expansion core 9 radially expands the inner hole of the workpiece 8 to realize clamping, and meanwhile, the expansion core 9 also axially pulls the workpiece 8 to be tightly abutted against the cylindrical end surface of the conical core 5; when the expanding core 9 extends along with the clamp pull rod 1, the expanding core 9 radially returns to the original state to release the workpiece 8.
In specific implementation, 6 or 8 equally-divided open slots are arranged on the inner taper hole of the expansion core 9, and the outer cylindrical surface at the left end of the expansion core 9 and the inner hole of the clamped workpiece 8 are in clearance fit in the unclamped state. The expansion core 9 is made of spring steel, is subjected to heat treatment and has elasticity.
In the concrete implementation, the outer cylindrical surface of the cylindrical end of the cone core 5 is in transition fit with a hole in the center of the clamp disc 2, and the cone of the cone core 5 is concentric with the main shaft of the machine tool; a gap is reserved between the right end of the clamp pull rod 1 and the central through hole of the cone core 5, so that the centering effect is not achieved; the groove on the end face of the clamp disc 2 is provided with a gap between the width direction and the workpiece, so that the positioning effect is not realized; the positioning of the workpiece 8 is determined by a conical surface expansion structure formed by a conical core 5 and an expansion core 9; the cutting torque during machining is transmitted to the workpiece 8 mainly through the grooves on the end face of the jig tray 2.
The expansion core 9 in the invention expands, clamps and axially tightens the workpiece 8, and transmits cutting torque through the end surface groove of the clamp disc 2, thereby solving the problem of automatic clamping of the thin side plate on a lathe, realizing turning of the end surface groove of the thin side plate, and improving the machining precision, the machining quality and the machining efficiency.
Claims (2)
1. An automatic clamp for turning grooves on the end surfaces of thin side plates is characterized in that: a cylindrical disc-shaped clamp disc (2) is arranged, a cone core (5) is arranged at the center of the clamp disc (2), a groove is formed in the end face of the clamp disc (2), the groove is wider than a workpiece, the groove bottom is lower than the cylindrical end face of the cone core, the groove is symmetrical to the center of the clamp disc, and the clamp disc (2) is fixed on a lathe spindle flange (13) by a first hexagon socket head screw (3) and a first spring washer (4);
the left end of the cone core (5) is a cylinder, the right end of the cone core is a cone, and a through hole is formed in the center of the cone core (5);
the clamp pull rod (1) passes through the central through hole of the cone core (5), the left end of the clamp pull rod (1) is in threaded connection with the lathe pull rod (14), and the right end of the clamp pull rod is provided with the expansion core (9);
the expansion core (9) is of a cylindrical structure, and the expansion core (9) is made of spring steel and is elastic after heat treatment; the left end of the expansion core (9) is provided with an inner conical hole which is matched with the conical body of the conical core (5) to form a conical surface expansion structure, and the inner conical hole is provided with a radial open slot; 6 or 8 equally-divided open grooves are formed in the inner taper hole at the left end of the expansion core (9), and the outer cylindrical surface at the left end of the expansion core (9) is in clearance fit with the inner hole of the clamped workpiece (8) in an unclamped state;
an inner hole of the clamped workpiece (8) is sleeved on the expansion core (9), the end face of the workpiece is abutted against the cylindrical end face of the cone core (5), and the workpiece (8) is clamped in an end face groove of the clamp disc (2);
when the expansion core (9) retreats along with the clamp pull rod (1), the inner conical hole of the expansion core (9) is axially propped by the cone of the conical core (5) to be radially spread, so that the expansion core (9) radially expands the inner hole of the workpiece (8) to realize clamping, and meanwhile, the expansion core (9) axially pulls the workpiece (8) to be abutted against the cylindrical end face of the conical core (5); when the expansion core (9) stretches out along with the clamp pull rod (1), the expansion core (9) radially restores to the original state to loosen the workpiece (8).
2. The automatic fixture for grooving the end surfaces of the thin side plates according to claim 1, wherein the automatic fixture is characterized in that: the outer cylindrical surface of the cylindrical end of the cone core (5) is in transition fit with a hole in the center of the clamp disc (2), and the cone at the right end of the cone core (5) is concentric with the main shaft of the machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331979.0A CN107891162B (en) | 2017-12-13 | 2017-12-13 | Automatic clamp for grooving end surfaces of thin side plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331979.0A CN107891162B (en) | 2017-12-13 | 2017-12-13 | Automatic clamp for grooving end surfaces of thin side plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107891162A CN107891162A (en) | 2018-04-10 |
| CN107891162B true CN107891162B (en) | 2023-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711331979.0A Active CN107891162B (en) | 2017-12-13 | 2017-12-13 | Automatic clamp for grooving end surfaces of thin side plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107891162B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632898U (en) * | 2010-01-27 | 2010-11-17 | 临安东方滑动轴承有限公司 | Hydraulic gear pump lateral plate double-end grinding and clamping device |
| CN204094532U (en) * | 2014-09-17 | 2015-01-14 | 江苏上汽汽车同步器厂 | The post-tensioning tight-holding type vehicle clamper of a kind of processing thin-walled endoporus and end face |
| CN105127811A (en) * | 2015-09-25 | 2015-12-09 | 合肥波林新材料股份有限公司 | Automatic fixture for clamping thin-wall ring gear part through internal expansion positioning and end surface compression |
| CN205816856U (en) * | 2016-06-28 | 2016-12-21 | 衢州职业技术学院 | A kind of Wedge-type multiple operation general automation fixture |
| CN206009896U (en) * | 2016-08-15 | 2017-03-15 | 西安伊克赛尔汽车新技术有限公司 | A kind of fixture of processing thin-wall part |
| CN207629229U (en) * | 2017-12-13 | 2018-07-20 | 合肥鼎聚精密制造有限责任公司 | The automatic fixture of thin side plate end face recessing |
-
2017
- 2017-12-13 CN CN201711331979.0A patent/CN107891162B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632898U (en) * | 2010-01-27 | 2010-11-17 | 临安东方滑动轴承有限公司 | Hydraulic gear pump lateral plate double-end grinding and clamping device |
| CN204094532U (en) * | 2014-09-17 | 2015-01-14 | 江苏上汽汽车同步器厂 | The post-tensioning tight-holding type vehicle clamper of a kind of processing thin-walled endoporus and end face |
| CN105127811A (en) * | 2015-09-25 | 2015-12-09 | 合肥波林新材料股份有限公司 | Automatic fixture for clamping thin-wall ring gear part through internal expansion positioning and end surface compression |
| CN205816856U (en) * | 2016-06-28 | 2016-12-21 | 衢州职业技术学院 | A kind of Wedge-type multiple operation general automation fixture |
| CN206009896U (en) * | 2016-08-15 | 2017-03-15 | 西安伊克赛尔汽车新技术有限公司 | A kind of fixture of processing thin-wall part |
| CN207629229U (en) * | 2017-12-13 | 2018-07-20 | 合肥鼎聚精密制造有限责任公司 | The automatic fixture of thin side plate end face recessing |
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| Publication number | Publication date |
|---|---|
| CN107891162A (en) | 2018-04-10 |
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