CN109513958B - Three-jaw lathe chuck - Google Patents
Three-jaw lathe chuck Download PDFInfo
- Publication number
- CN109513958B CN109513958B CN201910004713.8A CN201910004713A CN109513958B CN 109513958 B CN109513958 B CN 109513958B CN 201910004713 A CN201910004713 A CN 201910004713A CN 109513958 B CN109513958 B CN 109513958B
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- CN
- China
- Prior art keywords
- pressing
- base
- screw
- push rod
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003825 pressing Methods 0.000 claims abstract description 57
- 230000006835 compression Effects 0.000 claims abstract description 37
- 238000007906 compression Methods 0.000 claims abstract description 37
- 238000003754 machining Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction 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
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
-
- 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
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a three-jaw lathe chuck which solves the technical problem that a workpiece falls off in the process of machining the workpiece by the existing chuck, and is provided with a chuck body, a pressing device and jaws, wherein the pressing device is provided with a base, a pressing screw, a pin shaft, a pressing arm, a spring and a push rod, and is fixed on the chuck body by mounting screws; the right side of the base is provided with a screw hole, the screw hole is connected with the compression screw, the left side of the base is provided with a unthreaded hole, the push rod is connected with the unthreaded hole, and the push rod is nested with a spring and is arranged in the unthreaded hole; the base top is equipped with the pinhole, compresses tightly the arm and links the base through the round pin axle. The invention can be widely applied to the field of mechanical clamps.
Description
Technical Field
The invention relates to the field of mechanical clamps, in particular to a three-jaw lathe chuck.
Background
Machining thin-shell type workpieces sometimes requires the use of a three-jaw chuck to hold the workpiece tight from the workpiece cavity. In order to reduce the deformation of the workpiece, a smaller clamping force is required, but the workpiece is easy to fall off in the processing process due to the smaller clamping force, so that the workpiece is scrapped and the safety accident is caused.
Disclosure of Invention
The invention aims to solve the technical problem that the existing chuck causes workpiece falling in the process of machining workpieces, and provides the three-jaw lathe chuck which is simple to manufacture, convenient and reliable to use, capable of downwards pressing the workpieces from the cavity inside the clamped workpieces, and capable of tightly supporting the workpieces by three jaws, screwing down a compression screw outside the chassis so as to drive a compression arm in the cavity of the tightly pressed workpieces to downwards move and press on a flange of an inner cavity of the workpieces, so that the workpieces are tightly pressed on a positioning plane, and the workpieces are prevented from moving or falling in the machining process.
The clamping device is provided with a base, a compression screw, a pin shaft, a compression arm, a spring and a push rod, and is fixed on the chuck body through a mounting screw.
The right side of the base is provided with a screw hole, the screw hole is connected with the compression screw, the left side of the base is provided with a unthreaded hole, the push rod is connected with the unthreaded hole, and the push rod is nested with a spring and is arranged in the unthreaded hole; the base top is equipped with the pinhole, compresses tightly the arm and links the base through the round pin axle.
Preferably, the three pressing devices are respectively a first pressing device, a second pressing device and a third pressing device, and the three clamping jaws are respectively a first clamping jaw, a second clamping jaw and a third clamping jaw.
Preferably, the first and second jaws are fixed to both sides of the first compressing device, the second and third jaws are fixed to both sides of the second compressing device, and the first and third jaws are fixed to both sides of the third compressing device.
Preferably, the base is in a step shape, the base is provided with a positioning plane, the screw hole contains an internal screw, the unthreaded hole is in a step shape, and the base is installed and linked on the chuck body through the installation screw;
preferably, the base is provided with four bolt holes, and the compressing device is provided with four mounting screws.
Preferably, one end of the compression screw is provided with a ball head, the push rod is cylindrical, one end of the push rod is provided with the ball head and is arranged inside the unthreaded hole, and the other end of the push rod is positioned outside the base.
Preferably, the push rod is cylindrical, and the lower end of the pressing arm is clamped between the ball head of the push rod and the ball head of the pressing screw.
Preferably, the compressing arm is sickle-shaped, the front end of the compressing arm is provided with a bolt hole, the compressing arm is connected with a second compressing screw through the bolt hole in a threaded mode, and one end of the second compressing screw is provided with a ball head.
The invention has the advantages that:
(1) The invention relates to a lathe fixture with a function of downwards pressing a workpiece, which is provided with a chuck body, a pressing device and a clamping jaw.
(2) The three pairs of pressing devices and the clamping jaws are arranged in the invention, so that the three workpieces can be acted simultaneously, and the labor and time are saved.
(3) The base is in a ladder shape, and the upper plane of the base is a positioning plane for supporting a workpiece; four bolt holes are formed in the base and used for fixing the pressing device on the chuck body; the base is internally provided with an elongated slot which is vertically penetrated and a pin hole which is vertical to the elongated slot and is used for installing the pressing arm; the left side of the base is provided with a unthreaded hole for installing a push rod and a spring; the right side of the base is provided with a screw hole for installing a mounting screw.
(4) According to the invention, the pressing arm is sickle-shaped and is fixed on the base through the pin shaft, the installed pressing arm swings around the pin shaft under the drive of the pressing screw, and the front end of the pressing arm swings downwards to press a workpiece.
(5) In the invention, one end of the push rod and one end of the compression screw are respectively provided with a ball head, and the two ball heads are propped against two ends of the compression arm, so that when the compression arm rotates around the pin shaft, a workpiece is compressed and loosened.
Drawings
FIG. 1 is a cross-sectional view of the present invention when the inner circumference of a workpiece is tightened;
FIG. 2 is a top view of the three jaw lathe chuck of the present invention;
FIG. 3 is a top view of a chuck according to the present invention;
FIG. 4 is a cross-sectional view of a base of the present invention;
fig. 5 is a front view of the hold-down arm of the present invention.
Reference numerals: 1. the clamping device comprises a first compression screw, a base, a pin hole, a compression arm, a spring, a push rod, a screw hole, a light hole, a mounting screw, a workpiece, a second compression screw, a chuck body, a first compression device, a second compression device, a third compression device, a first clamping jaw, a second clamping jaw, a third clamping jaw, a flange of a workpiece cavity and a pin shaft.
Detailed Description
The invention will be better understood from the following examples. However, it will be readily appreciated by those skilled in the art that the description of the embodiments is provided for illustration only and should not be construed as limiting the invention as described in the claims.
As shown in fig. 1, the three-jaw lathe chuck is provided with a chuck body 12, a pressing device and jaws, wherein the pressing device is provided with a base 2, a first pressing screw 1, a pin 19, a pressing arm 4, a spring 5 and a push rod 6, and as shown in fig. 3, the pressing device is fixed on the chuck body 12 through mounting screws 9, and the number of the mounting screws 9 is four.
As shown in fig. 2, the total number of the pressing devices is 3, namely a first pressing device 13, a second pressing device 14 and a third pressing device 15; the number of the clamping jaws is 3, namely a first clamping jaw 16, a second clamping jaw 17 and a third clamping jaw 18; the first and second jaws 16, 17 are distributed on both sides of the first compressing device 13, the second and third jaws 16, 17 are distributed on both sides of the second compressing device 14, and the first and third jaws 16, 18 are distributed on both sides of the third compressing device 15.
As shown in fig. 4, the base 2 is stepped, and the upper plane thereof is a positioning plane for supporting the workpiece 10; the inside of the base 2 is provided with a long groove which is penetrated up and down, and the upper end of the base 2 is provided with a pin hole 3 for installing a pressing arm 4; the right side of the base 2 is provided with a screw hole 7 for installing the first compression screw 1, and the left side of the base 2 is provided with a light hole 8 for installing the push rod 6 and the spring 5; as shown in fig. 3, four bolt holes are formed in the base 2, and the base 2 and the chuck body 12 are fixed by installing four mounting screws 9, namely, the pressing device is fixed on the chuck body 12;
Specifically, a screw hole 7 is formed in the right side of the base 2 and used for installing a first compression screw 1, the head end of the first compression screw 1 is fixedly connected with a wrenching section, the tail end of the first compression screw 1 is fixedly connected with a ball head, and the first compression screw 1 is in threaded connection with the base 2 through the screw hole 7 in the right side of the base; the left side of the base 2 is provided with a light hole 8, the light hole 8 is in a ladder shape and is used for being connected with a push rod 6, one end of the push rod 6 is provided with a ball head and is fixed inside the light hole 8, one end of the push rod 6 is fixed outside the base 2, a spring 5 is nested on the push rod 6, and the spring 5 abuts against the tail end of the ball head.
The pressing arm 4 is clamped between the ball head of the push rod 6 and the ball head of the first pressing screw 1, as shown in fig. 5, the pressing arm 4 is in a sickle shape, a pin hole 3 is arranged in the middle of the pressing arm 4 and coincides with the pin hole of the base 2, the pressing arm 4 is fixedly connected with the base 2 through a pin shaft 20, a screw hole is formed in the front end of the pressing arm 2 and used for installing the second pressing screw 11, one end of the second pressing screw 11 is provided with a ball head, and the ball head abuts against a flange 19 of an inner cavity of a workpiece.
The working principle of the invention is as follows:
After the three-jaw chuck tightens the workpiece 10, the first compression screw 1 is screwed, the compression arm 4 can move around the pin shaft 20 under the driving of the first compression screw 1, and the upper end of the compression arm 4 swings downwards to compress the workpiece 10. The first compression screw 1 drives the compression arm 4 positioned in the inner cavity of the compressed workpiece to move downwards to press the flange 19 of the inner cavity of the workpiece, so that the compressed workpiece 10 is compressed on the positioning plane of the base 2, and the workpiece is prevented from moving or falling off in the processing process.
The first compression screw 1 is loosened, the ball head of the push rod 6 is propped outwards against the lower end of the compression arm 4 under the pushing of the spring 5, the lower end of the compression arm 4 is pushed outwards, the compression arm 4 swings around the pin shaft 20, and the upper end of the compression arm 4 swings upwards to loosen the workpiece 10.
However, the foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention are intended to fall within the scope of the claims.
Claims (4)
1. The three-jaw lathe chuck is provided with a chuck body, a pressing device and a clamping jaw, and is characterized in that the pressing device is provided with a base, a first pressing screw, a pin shaft, a pressing arm, a spring and a push rod, and is fixed on the chuck body through a mounting screw;
The right side of the base is provided with a screw hole, the screw hole is connected with the first compression screw, the left side of the base is provided with a light hole, the light hole is in a ladder shape, the push rod is connected through the light hole, the spring is nested in the push rod, and the spring is arranged in the light hole; the push rod is cylindrical, one end of the push rod is provided with a ball head and is arranged inside the unthreaded hole, and the other end of the push rod is positioned outside the base; a pin hole is formed above the base, and the pressing arm is connected with the base through a pin shaft;
The base is in a ladder shape and is provided with a positioning plane for supporting a workpiece; the pressing arm can move around the pin shaft, the pressing arm is sickle-shaped, the front end of the pressing arm is provided with a bolt hole, the pressing arm is connected with a second pressing screw through the bolt hole in a threaded manner, one end of the second pressing screw is provided with a ball head, one end of the first pressing screw is provided with a ball head, the inside of the base is provided with a long groove which penetrates up and down, and the lower end of the pressing arm is clamped between the ball head of the push rod and the ball head of the first pressing screw;
after the clamping jaw supports the workpiece, the first compression screw is screwed down, the upper end of the compression arm is driven to press the workpiece when swinging downwards, and the ball head of the second compression screw abuts against the flange of the inner cavity of the workpiece.
2. The three jaw lathe chuck of claim 1, wherein the number of the pressing devices is three, namely a first pressing device, a second pressing device and a third pressing device, and the number of the jaws is three, namely a first jaw, a second jaw and a third jaw.
3. The three jaw lathe chuck of claim 2, wherein the first and second jaws are secured to both sides of the first hold down device, the second and third jaws are secured to both sides of the second hold down device, and the first and third jaws are secured to both sides of the third hold down device.
4. The three jaw lathe chuck of claim 1, wherein the base has four bolt holes and the compression device has four mounting screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004713.8A CN109513958B (en) | 2019-01-03 | 2019-01-03 | Three-jaw lathe chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004713.8A CN109513958B (en) | 2019-01-03 | 2019-01-03 | Three-jaw lathe chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109513958A CN109513958A (en) | 2019-03-26 |
| CN109513958B true CN109513958B (en) | 2024-05-10 |
Family
ID=65798134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910004713.8A Active CN109513958B (en) | 2019-01-03 | 2019-01-03 | Three-jaw lathe chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109513958B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007024535A1 (en) * | 2007-05-24 | 2008-11-27 | Lang Technik Gmbh | Chuck clamp for round work pieces on turning machines has a worm drive |
| CN103737397A (en) * | 2013-12-27 | 2014-04-23 | 柳江县龙满机械部件有限责任公司 | Fixture for machining connecting sleeve |
| CN104339287A (en) * | 2013-07-30 | 2015-02-11 | 常州鑫鹏工具制造有限公司 | Machining tightening device for workpieces with inner folded edges |
| CN104708355A (en) * | 2013-12-13 | 2015-06-17 | 无锡市生丰锻造有限公司 | Using method of positioning clamp for turning conical face |
| CN204770757U (en) * | 2015-06-15 | 2015-11-18 | 鹰普（中国）有限公司 | Numerical control lathe hydraulically operated fixture |
| CN205271440U (en) * | 2015-11-25 | 2016-06-01 | 重庆帅昌机械制造有限公司 | Tight positioner of clamp of ring flange |
| CN205733905U (en) * | 2016-01-25 | 2016-11-30 | 贵州意唯新机电设备有限公司 | A kind of workpiece pressuring clamping device |
| CN106881470A (en) * | 2015-12-15 | 2017-06-23 | 天润曲轴股份有限公司 | It is a kind of can 6 points clamping workpiece scroll chucks |
| CN107617854A (en) * | 2017-09-13 | 2018-01-23 | 万泰机电工业(昆山)有限公司 | A kind of processing method of New energy automobile motor inner casing |
| CN209272513U (en) * | 2019-01-03 | 2019-08-20 | 天润曲轴股份有限公司 | A kind of three-jaw lathe chuck |
-
2019
- 2019-01-03 CN CN201910004713.8A patent/CN109513958B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007024535A1 (en) * | 2007-05-24 | 2008-11-27 | Lang Technik Gmbh | Chuck clamp for round work pieces on turning machines has a worm drive |
| CN104339287A (en) * | 2013-07-30 | 2015-02-11 | 常州鑫鹏工具制造有限公司 | Machining tightening device for workpieces with inner folded edges |
| CN104708355A (en) * | 2013-12-13 | 2015-06-17 | 无锡市生丰锻造有限公司 | Using method of positioning clamp for turning conical face |
| CN103737397A (en) * | 2013-12-27 | 2014-04-23 | 柳江县龙满机械部件有限责任公司 | Fixture for machining connecting sleeve |
| CN204770757U (en) * | 2015-06-15 | 2015-11-18 | 鹰普（中国）有限公司 | Numerical control lathe hydraulically operated fixture |
| CN205271440U (en) * | 2015-11-25 | 2016-06-01 | 重庆帅昌机械制造有限公司 | Tight positioner of clamp of ring flange |
| CN106881470A (en) * | 2015-12-15 | 2017-06-23 | 天润曲轴股份有限公司 | It is a kind of can 6 points clamping workpiece scroll chucks |
| CN205733905U (en) * | 2016-01-25 | 2016-11-30 | 贵州意唯新机电设备有限公司 | A kind of workpiece pressuring clamping device |
| CN107617854A (en) * | 2017-09-13 | 2018-01-23 | 万泰机电工业(昆山)有限公司 | A kind of processing method of New energy automobile motor inner casing |
| CN209272513U (en) * | 2019-01-03 | 2019-08-20 | 天润曲轴股份有限公司 | A kind of three-jaw lathe chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109513958A (en) | 2019-03-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Tianrun road Wendeng District of Weihai City, Shandong Province, No. 264400 2-13 Applicant after: Tianrun Industrial Technology Co.,Ltd. Address before: Wendeng City, Weihai City, Shandong province 264400 Tianrun Road No. 2-13 Applicant before: TIANRUN CRANKSHAFT Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |