CN104723601A - Hydraulic locking device of pressure machine - Google Patents
Hydraulic locking device of pressure machine Download PDFInfo
- Publication number
- CN104723601A CN104723601A CN201510120938.1A CN201510120938A CN104723601A CN 104723601 A CN104723601 A CN 104723601A CN 201510120938 A CN201510120938 A CN 201510120938A CN 104723601 A CN104723601 A CN 104723601A
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- screw
- hole
- stepped hole
- screw rod
- locking nut
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Abstract
The invention discloses a hydraulic locking device of a pressure machine. The hydraulic locking device of the pressure machine comprises a connecting rod with a stepped hole, a locknut installed on the stepped hole, and a screw located in the stepped hole, the screw can stretch out of the stepped hole in the length direction, a screw ball head is formed at the stretching end of the screw and connected with a sliding block, the top plane of the locknut has a certain axial clearance relative to a step, the screw and the locknut have a certain thread clearance when screwed together, and the axial clearance is larger than the thread clearance. A seal end cover with a radial through hole is installed on the bottom end face of the connecting rod, an axial separation cavity is formed between the seal end cover and the locknut and communicated with the radial through hole, and when hydraulic oil is injected into the radial through hole and the axial separation cavity is filled with the hydraulic oil, the screwed section of the locknut and the screw rod has elastic deformation. By the adoption of the technical scheme, the thread clearance can be eliminated, the screw is high in movement precision and long in service life, the precision of the sliding block moving to a bottom dead centre working position is improved, and therefore a stamped workpiece has high quality and precision.
Description
[technical field]
The present invention relates to a kind of hydraulic locking apparatus of forcing press, belong to forcing press locking technical field.
[background technology]
As shown in Figure 1, the locking device of existing forcing press comprises connecting rod 1 ', screw rod 2 ' and swivel nut 3 ', and screw rod 2 ' and swivel nut 3 ' are all positioned at the stepped hole 10 ' of connecting rod 1 '.Wherein, swivel nut 3 ' is fixed in stepped hole 10 ' by pressing plate H ', and together with swivel nut 3 ' and screw rod 2 ' are screwed on by internal and external screw thread, and one end that screw rod 2 ' stretches out stepped hole 10 ' forms screw ball head 21 ', this screw ball head 21 ' connection sliding block 5 '.
Slide block 5 ' the process that pumps is as follows:
When forcing press operation, the motion of known crankshaft connecting rod system, connecting rod 1 ' is made to drive screw ball head 21 ' to move, thus conversion of motion is slide block 5 ' moves up and down at upper dead center position and bottom dead centre operating position, owing to there is thread pitch objectively between screw rod 2 ' and swivel nut 3 ', affect slide block 5 ' and arrive bottom dead centre operating position precision, cause stamped workpieces Mass accuracy low, and reduce the service life of screw rod 2 ' and die of press.
[summary of the invention]
The deficiency that the technical problem to be solved in the present invention exists for above-mentioned prior art and provide that a kind of screw motion precision is high, the hydraulic locking apparatus of the forcing press of long service life, this device can improve the slide block that screw ball head connects and arrive bottom dead centre operating position with high accuracy.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of hydraulic locking apparatus of forcing press, comprise the connecting rod with stepped hole and the screw rod being arranged in stepped hole, the length of screw rod can stretch out described stepped hole, this end that described screw rod stretches out stepped hole forms screw ball head, screw ball head connection sliding block, its improvement is: also comprise the locking nut be installed on stepped hole, the installation of locking nut makes its top plane have certain end-play relative to step, time together with screw rod is screwed on locking nut, there is certain thread pitch, described end-play is greater than this thread pitch, described connecting rod is installed with the end cover of band radial direction through hole at its bottom face, axial compartment is formed between sealing end cap and locking nut, this axial compartment is connected with radial direction through hole, in radial direction through hole injection liquid force feed and when axial compartment is filled, elastic deformation is produced at the screwing section of action of hydraulic force lower locking nut and screw rod.
Thread pitch time together with above-mentioned screw rod is screwed on locking nut is 0.1mm, and above-mentioned end-play is 0.25mm.
Compared with prior art, tool of the present invention has the following advantages and beneficial effect:
After adopting technique scheme, because the screwing section at hydraulics lower locking nut and screw rod produces elastic deformation, so can eliminate the thread pitch existing for screwing section of locking nut and screw rod, screw motion precision is high, long service life, and then improve the precision that reciprocating slide block moves to bottom dead centre operating position, therefore, stamped workpieces Mass accuracy is high.
[accompanying drawing explanation]
Fig. 1 is the locking device structure schematic diagram of existing forcing press;
Fig. 2 is the hydraulic locking apparatus structural representation of forcing press of the present invention.
Be described in further detail with regard to the present invention below in conjunction with accompanying drawing.
[detailed description of the invention]
Please refer to shown in Fig. 2, a kind of hydraulic locking apparatus of forcing press, comprise the connecting rod 1 with stepped hole 10 and the screw rod 2 being arranged in stepped hole 10, the length of screw rod 2 can be stretched out outside described stepped hole 10, this end that screw rod 2 stretches out stepped hole 10 forms screw ball head 21, screw ball head 21 connection sliding block 5, its improvement is: also comprise the locking nut 3 be installed on stepped hole 10, the installation of locking nut 3 makes its top plane 31 have certain end-play relative to step 11, time together with screw rod 2 is screwed on locking nut 3, there is certain thread pitch, described end-play is greater than this thread pitch, connecting rod 1 is installed with the end cover 4 of band radial direction through hole 40 at its bottom face, axial compartment K is formed between sealing end cap 4 and locking nut 3, this axial compartment K is connected with radial direction through hole 40, in radial direction through hole 40 injection liquid force feed and when axial compartment K is filled, elastic deformation is produced at action of hydraulic force lower locking nut 3 and the screwing section of screw rod 2.
Thread pitch time together with screw rod 2 is screwed on locking nut 3 is 0.1mm, and end-play is 0.25mm.
Locking nut 3 is installed by pin H; Fixed by bolt S when end cover 4 is installed.
The pressure of hydraulic oil is 250Kg/cm
2.
The course of work of slide block 5 is as follows:
When forcing press operation, bent axle is connected with connecting rod 1, the motion of crankshaft connecting rod system, makes connecting rod 1 drive screw ball head 21 to move, thus conversion of motion is slide block 5 moves up and down at upper dead center position and bottom dead centre operating position.Due to locking nut 3 when mounted, make it push up plane 31 and have certain end-play relative to step 11, when radial direction through hole 40 injection liquid force feed and when axial compartment K is filled, due to the design of end-play, locking nut 3 can be made under action of hydraulic force to have the spatial joint clearance upwards lifted, locking nut 3 produces elastic deformation with the screwing section of screw rod 2, its deformation result is a cancellation the thread pitch existing for screwing section of locking nut 3 and screw rod 2, screw rod 2 kinematic accuracy is improved, and then improve the precision that reciprocating slide block 5 moves to bottom dead centre operating position, therefore, stamped workpieces Mass accuracy is high.
Claims (2)
1. the hydraulic locking apparatus of a forcing press, comprise the connecting rod with stepped hole and the screw rod being arranged in stepped hole, the length of screw rod can stretch out described stepped hole, this end that described screw rod stretches out stepped hole forms screw ball head, screw ball head connection sliding block, it is characterized in that: also comprise the locking nut be installed on stepped hole, the installation of locking nut makes its top plane have certain end-play relative to step, time together with screw rod is screwed on locking nut, there is certain thread pitch, described end-play is greater than this thread pitch, described connecting rod is installed with the end cover of band radial direction through hole at its bottom face, axial compartment is formed between sealing end cap and locking nut, this axial compartment is connected with radial direction through hole, in radial direction through hole injection liquid force feed and when axial compartment is filled, elastic deformation is produced at the screwing section of action of hydraulic force lower locking nut and screw rod.
2. hydraulic locking apparatus according to claim 1, it is characterized in that screw rod be screwed on locking nut together with time thread pitch be 0.1mm, described end-play is 0.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120938.1A CN104723601A (en) | 2015-03-18 | 2015-03-18 | Hydraulic locking device of pressure machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120938.1A CN104723601A (en) | 2015-03-18 | 2015-03-18 | Hydraulic locking device of pressure machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104723601A true CN104723601A (en) | 2015-06-24 |
Family
ID=53448292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510120938.1A Pending CN104723601A (en) | 2015-03-18 | 2015-03-18 | Hydraulic locking device of pressure machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104723601A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140836A (en) * | 2015-10-09 | 2015-12-09 | 广州番禺电缆集团有限公司 | Self-locking cable fixation device |
| CN106493992A (en) * | 2016-12-21 | 2017-03-15 | 苏州蓝王机床工具科技有限公司 | Press ball screw rod retaining mechanism |
| CN107701866A (en) * | 2017-10-19 | 2018-02-16 | 深圳市深精电科技有限公司 | Can incline zero-clearance pin cup assembly and has its equipment |
| CN109540686A (en) * | 2018-12-29 | 2019-03-29 | 王曦 | Spacer-type press machine is set in one kind |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111834A1 (en) * | 1991-04-11 | 1992-10-15 | Berg & Co Gmbh | Locking device for ram of press - has self-locking bolt and nut driven by motor for both locking and release |
| CN2149285Y (en) * | 1993-02-18 | 1993-12-15 | 纪金怀 | The locking device between the connecting rod and the screw rod of the stamping machine |
| CN2832503Y (en) * | 2005-11-03 | 2006-11-01 | 扬州锻压机床集团有限公司 | Press machine screw thread locking device |
| CN201446732U (en) * | 2009-07-08 | 2010-05-05 | 江苏扬力集团有限公司 | Die height hydraulic locking device of pressing machine |
| CN103640247A (en) * | 2013-11-17 | 2014-03-19 | 苏州蓝王机床工具科技有限公司 | Locking mechanism of connecting rod and ball screw rod of press machine |
| CN204505905U (en) * | 2015-03-18 | 2015-07-29 | 浙江锻压机床有限公司 | A kind of hydraulic locking apparatus of forcing press |
-
2015
- 2015-03-18 CN CN201510120938.1A patent/CN104723601A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111834A1 (en) * | 1991-04-11 | 1992-10-15 | Berg & Co Gmbh | Locking device for ram of press - has self-locking bolt and nut driven by motor for both locking and release |
| CN2149285Y (en) * | 1993-02-18 | 1993-12-15 | 纪金怀 | The locking device between the connecting rod and the screw rod of the stamping machine |
| CN2832503Y (en) * | 2005-11-03 | 2006-11-01 | 扬州锻压机床集团有限公司 | Press machine screw thread locking device |
| CN201446732U (en) * | 2009-07-08 | 2010-05-05 | 江苏扬力集团有限公司 | Die height hydraulic locking device of pressing machine |
| CN103640247A (en) * | 2013-11-17 | 2014-03-19 | 苏州蓝王机床工具科技有限公司 | Locking mechanism of connecting rod and ball screw rod of press machine |
| CN204505905U (en) * | 2015-03-18 | 2015-07-29 | 浙江锻压机床有限公司 | A kind of hydraulic locking apparatus of forcing press |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140836A (en) * | 2015-10-09 | 2015-12-09 | 广州番禺电缆集团有限公司 | Self-locking cable fixation device |
| CN105140836B (en) * | 2015-10-09 | 2018-01-09 | 广州番禺电缆集团有限公司 | A kind of self-locking cable fixing device |
| CN106493992A (en) * | 2016-12-21 | 2017-03-15 | 苏州蓝王机床工具科技有限公司 | Press ball screw rod retaining mechanism |
| CN107701866A (en) * | 2017-10-19 | 2018-02-16 | 深圳市深精电科技有限公司 | Can incline zero-clearance pin cup assembly and has its equipment |
| CN109540686A (en) * | 2018-12-29 | 2019-03-29 | 王曦 | Spacer-type press machine is set in one kind |
| CN109540686B (en) * | 2018-12-29 | 2024-02-06 | 无锡东仪制造科技有限公司 | An upper pad type press |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161013 Address after: 312400, four floor, technical center building, 88 forging Road, Shengzhou Economic Development Zone, Zhejiang, China Applicant after: Zhejiang Zhe Forging Machine Co. Ltd. Address before: 312400 No. 88 forging Road, Shengzhou Economic Development Zone, Zhejiang, China Applicant before: Zhejiang forging machine tool Co., Ltd |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |
|
| RJ01 | Rejection of invention patent application after publication |