CN208322805U - A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture - Google Patents
A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture Download PDFInfo
- Publication number
- CN208322805U CN208322805U CN201820927200.5U CN201820927200U CN208322805U CN 208322805 U CN208322805 U CN 208322805U CN 201820927200 U CN201820927200 U CN 201820927200U CN 208322805 U CN208322805 U CN 208322805U
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- Prior art keywords
- centering
- cylindrical
- gib block
- hydraulic cylinder
- point
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Abstract
The utility model discloses a kind of multi-dot hydraulic pressures to clamp, self-centering type cylindrical work fixture, belong to workpiece machining field, including chuck body cylindrical, it is coaxially provided with the cylindrical cavity for placing workpiece in chuck body, is equipped with clamp system and centering machine on cylindrical empty cavity wall around circumferential direction；A point oily end cap is installed on pedestal, working connection there are two being set in point oily end cap, first point of oil circuit being connected respectively with each compression hydraulic cylinder is equipped in chuck body, equipped with second point of oil circuit being connected respectively with each centering hydraulic cylinder, each first point of oil circuit is connected with one of working connection, and each second point of oil circuit is connected with another one working connection；Multiple compression hydraulic cylinders are more uniform to the clamping force distribution of cylindrical work, and since the hydraulic circuit of each compression hydraulic cylinder is connected to logical make the chucking power moment equal, so deformation occurs that amount is consistent for cylindrical work, when solving processing internal control caused by elliptic problem.
Description
Technical field
The utility model belongs to workpiece field of machining technology, in particular to a kind of multi-dot hydraulic pressure clamps, self-centering type is round
Cylindrical workpiece fixture.
Background technique
Common excircle of workpiece fixture is machined at present mainly uses composite hydraulic scroll chuck, this composite hydraulic
Scroll chuck is mainly made of components such as disc spring, tapered roller bearing, slips, while increasing liquid on typical often closed chuck
Compressing cylinder.Chuck clamping force is provided jointly by disc spring and hydraulic cylinder, and disc spring provides main clamping force, and oil cylinder provides auxiliary clamp
Power, once slips is worn, adjustable hydraulic system steps up hydraulic cylinder to compensate the loss of disc spring clamping force.It is this compound
The hydraulic scroll chuck of formula is more demanding to processing and installation accuracy, once bias is easily damaged workpiece；And slips is prone to wear,
Service life is short；Overall dimension is larger, and required installation space is larger；Since retaining part is shorter, for the cylindrical work of longer dimension
Part, which is easy to produce vibration, influences processing quality.
Utility model content
The utility model aim is to propose a kind of multi-dot hydraulic pressure folder to solve above-mentioned problems of the prior art
Tightly, self-centering type cylindrical work fixture；It is adopted the technical scheme that in order to achieve the above objectives:
A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture, including chuck body cylindrical, in fixture
It is coaxially provided with the cylindrical cavity for placing workpiece to be processed in ontology, is equipped with and clamps on cylindrical empty cavity wall around circumferential direction
Mechanism and centering machine；
The clamp system includes along axial equally distributed multiple hydraulic cylinders group, and each hydraulic cylinder group includes around circumferential equal
Multiple compression hydraulic cylinders of even distribution, the piston rod of the compression hydraulic cylinder are directed radially towards cylindrical cavity central axis point
Cloth is respectively and fixedly provided with compression contact in the end of piston rod；
The centering machine includes around circumferential equally distributed multiple gib block movable auxiliaries, and each gib block movable auxiliary includes
Along the axial and integrally formed bar shaped sliding slot of cylindrical empty cavity wall, mutual cooperation effect is slidably connected in bar shaped sliding slot
Interior wedge shape gib block and outer wedge-shaped gib block, drive interior wedge-shaped gib block along diameter when outer wedge-shaped gib block moves axially so
It is moved to direction, spring screw is installed between wedge-shaped gib block and chuck body inside；
Pedestal is installed close to one end of outer wedge-shaped gib block in chuck body, is felt at ease in the base hydraulic equipped with feeling relieved
Cylinder, the piston rod for hydraulic cylinder of feeling relieved be located at cylindrical empty it is intracavitary and along cylindrical cavity central axis direction be arranged, centering liquid
The piston rod end of cylinder pressure is fixed with push-plate, and push-plate is slidably connected with cylindrical cavity, it is outer wedge shape gib block end with push away
Disk is fixedly connected；An oily end cap is installed point on pedestal, sets that there are two working connections in point oily end cap, is equipped in chuck body
First point of oil circuit being connected respectively with each compression hydraulic cylinder, equipped with second point to be connected respectively with each centering hydraulic cylinder
Oil circuit, each first point of oil circuit are connected with one of working connection, each second point of oil circuit with the main oil of another one
Road is connected.
Preferably, the end for compressing contact is located on the same cylindrical surface, and the compression contact clamps face made of enclosing
Referred to as clamp cylinders face；The inner surface of interior wedge shape gib block is located on the same cylindrical surface, the interior wedge-shaped gib block enclosing and
At clamping face be known as feel relieved cylindrical surface.
Preferably, the terminal pad for being connected on machine tool chief axis is equipped on pedestal.
Preferably, the clamp system includes three hydraulic cylinder groups, and each hydraulic cylinder group includes 12 compression hydraulic cylinders.
Preferably, centering machine includes six gib block movable auxiliaries.
Preferably, end cap is equipped at the cylindrical cavity port of chuck body.
It is had the beneficial effect that possessed by the utility model since clamp system has multiple compression hydraulic cylinders, to cylindrical work
The clamping force distribution of part is more uniform, and since the hydraulic circuit of each compression hydraulic cylinder is connected to logical make chucking power
Moment is equal, so deformation occurs that amount is consistent for cylindrical work, when having well solved processing internal control caused by elliptic problem.
On the other hand by the effect of the gib block movable auxiliary of centering machine, push-plate pushes outer wedge-shaped gib block to drive simultaneously
Interior wedge shape gib block is drawn close or is opened to centre, and synchronism is higher, and centering precision is high.
Wherein, centering machine can also not exit in process and the moment keeps to the certralizing ability of workpiece, significantly
The length for increasing retaining part still ensures that processing quality for the cylindrical work processing of longer dimension.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the cross-sectional view in Fig. 2 along the direction D-D.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
As shown in Figure 1 to Figure 3, a kind of multi-dot hydraulic pressure clamping, self-centering type cylindrical work fixture, including cylindrical
Chuck body 4 is coaxially provided with the cylindrical cavity 9 for placing workpiece to be processed, around circumferential C in cylinder in chuck body 4
9 inner wall of shape cavity is equipped with clamp system and centering machine；
The clamp system includes along the equally distributed multiple hydraulic cylinders group of axial A, and each hydraulic cylinder group includes around circumferential direction
The piston rod radially B of equally distributed multiple compression hydraulic cylinders 5, the compression hydraulic cylinder 5 is directed toward 9 center of cylindrical cavity
Axis distribution, is respectively and fixedly provided in the end of piston rod and compresses contact 7；
The centering machine includes around the equally distributed multiple gib block movable auxiliaries of circumferential C, each gib block movable auxiliary packet
It includes along axial B and the integrally formed bar shaped sliding slot (not shown) of 9 inner wall of cylindrical cavity, is slidably connected in bar shaped sliding slot
There are the interior wedge-shaped gib block 8 and outer wedge-shaped gib block 11 that mutual cooperation acts on, when axially A is moved outer wedge-shaped gib block 11
Wedge-shaped gib block 8 is moved along the radial direction B in driving, and is equipped with spring spiral shell between wedge-shaped gib block 8 and chuck body 4 inside
Nail 6；
Pedestal 3 is installed close to one end of outer wedge-shaped gib block 11 in chuck body 4, centering is installed at 3 center of pedestal
Hydraulic cylinder 10, the piston rod of centering hydraulic cylinder 10 are located in cylindrical cavity 9 and set along 9 central axis direction of cylindrical cavity
It sets, is fixed with push-plate 13 in the piston rod end of centering hydraulic cylinder 9, push-plate 13 is slidably connected with cylindrical cavity 9, and outer wedge shape is led
It is fixedly connected to the end of item 11 with push-plate 13；An oily end cap 1 is installed point on the base 3, set in point oily end cap 1 there are two
Working connection is equipped with first point of oil circuit being connected respectively with each compression hydraulic cylinder 5, equipped with respectively and often in chuck body 4
Second point of oil circuit that a centering hydraulic cylinder 10 is connected, each first point of oil circuit are connected with one of working connection, each
Second point of oil circuit is connected with another one working connection.
Wherein, the end for compressing contact 7 is located on the same cylindrical surface, and the compression contact 7 clamps face made of enclosing
Referred to as clamp cylinders face；The inner surface of interior wedge shape gib block 8 is located on the same cylindrical surface, and the interior wedge-shaped gib block 8 encloses
Made of clamping face be known as feel relieved cylindrical surface.
It is additionally provided with the terminal pad 2 for being connected on machine tool chief axis on the base 3, in fixture sheet, 4 cylindrical cavity 9
End cap 12 is equipped at port.
According to actual needs, it is preferable that the clamp system includes three hydraulic cylinder groups, and each hydraulic cylinder group includes 12
A compression hydraulic cylinder 5；Centering machine includes six gib block movable auxiliaries.
As shown in figure 3, when the utility model is used, this fixture is fixed on machine tool chief axis by terminal pad 2 first,
One end of cylindrical work is put into cylindrical cavity 9, hydraulic oil enters a point oily end cap 1 by the first solenoid valve control and controls
Hydraulic cylinder 10 of feeling relieved acts, push push-plate 13, outer wedge-shaped gib block 11 move right to push together in wedge-shaped gib block 8 to
The centering function for completing cylindrical work is drawn close in centre；After the completion of workpiece centering, a point oily end is entered by second solenoid valve control
Lid 1 controls compression hydraulic cylinder 5 and acts, and drives 36 to compress contact 7 and draws close the clamping function for completing cylindrical work to centre；So
Afterwards, the first solenoid valve is reversed, 13 counter motion of push-plate is pushed, outer wedge shape gib block 11 is retracted under the effect of spring screw 6.When
It completes the process when needing to take out cylindrical work, second solenoid valve is reversed, control 5 counter motion of compression hydraulic cylinder, 36 pressures
It tightly touches first 7 and retracts and can be taken off workpiece.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, but these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. a kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture, which is characterized in that including fixture sheet cylindrical
Body is coaxially provided with the cylindrical cavity for placing workpiece to be processed in chuck body, around circumferential direction in cylindrical empty cavity wall
It is equipped with clamp system and centering machine；
The clamp system includes along axial equally distributed multiple hydraulic cylinders group, and each hydraulic cylinder group includes uniformly dividing around circumferential
Multiple compression hydraulic cylinders of cloth, the piston rod of the compression hydraulic cylinder are directed radially towards the distribution of cylindrical cavity central axis,
The end of piston rod is respectively and fixedly provided with compression contact；
The centering machine includes around circumferential equally distributed multiple gib block movable auxiliaries, and each gib block movable auxiliary includes along axis
To with the integrally formed bar shaped sliding slot of cylindrical empty cavity wall, slidably connected in bar shaped sliding slot mutual cooperation effect interior wedge
Shape gib block and outer wedge-shaped gib block, drive interior wedge-shaped gib block along radial side when outer wedge-shaped gib block moves axially so
To movement, spring screw is installed between wedge-shaped gib block and chuck body inside；
Pedestal is installed close to one end of outer wedge-shaped gib block in chuck body, is felt at ease in the base equipped with centering hydraulic cylinder, it is fixed
It is intracavitary and be arranged along cylindrical cavity central axis direction that the piston rod of heart hydraulic cylinder is located at cylindrical empty, in centering hydraulic cylinder
Piston rod end is fixed with push-plate, and push-plate is slidably connected with cylindrical cavity, and the end of outer wedge shape gib block is fixed with push-plate
Connection；An oily end cap is installed point on pedestal, sets that there are two working connections in point oily end cap, be equipped in chuck body respectively with
First point of oil circuit that each compression hydraulic cylinder is connected, equipped with second point of oil circuit being connected respectively with each centering hydraulic cylinder,
Each first point of oil circuit is connected with one of working connection, and each second point of oil circuit is connected with another one working connection
It is logical.
2. multi-dot hydraulic pressure according to claim 1 clamps, self-centering type cylindrical work fixture, which is characterized in that compress
The end of contact is located on the same cylindrical surface, and clamping face made of the compression contact encloses is known as clamp cylinders face；Interior wedge
The inner surface of shape gib block is located on the same cylindrical surface, and clamping face made of the interior wedge-shaped gib block encloses is known as centering
Cylinder.
3. multi-dot hydraulic pressure according to claim 1 or 2 clamps, self-centering type cylindrical work fixture, which is characterized in that
Pedestal is equipped with the terminal pad for being connected on machine tool chief axis.
4. multi-dot hydraulic pressure according to claim 3 clamps, self-centering type cylindrical work fixture, which is characterized in that described
Clamp system includes three hydraulic cylinder groups, and each hydraulic cylinder group includes 12 compression hydraulic cylinders.
5. multi-dot hydraulic pressure according to claim 4 clamps, self-centering type cylindrical work fixture, which is characterized in that centering
Mechanism includes six gib block movable auxiliaries.
6. multi-dot hydraulic pressure according to claim 5 clamps, self-centering type cylindrical work fixture, which is characterized in that pressing from both sides
Have and is equipped with end cap at the cylindrical cavity port of ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927200.5U CN208322805U (en) | 2018-06-15 | 2018-06-15 | A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927200.5U CN208322805U (en) | 2018-06-15 | 2018-06-15 | A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208322805U true CN208322805U (en) | 2019-01-04 |
Family
ID=64770820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820927200.5U Withdrawn - After Issue CN208322805U (en) | 2018-06-15 | 2018-06-15 | A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208322805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544278A (en) * | 2018-06-15 | 2018-09-18 | 中原内配集团股份有限公司 | A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture |
-
2018
- 2018-06-15 CN CN201820927200.5U patent/CN208322805U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544278A (en) * | 2018-06-15 | 2018-09-18 | 中原内配集团股份有限公司 | A kind of multi-dot hydraulic pressure clamps, self-centering type cylindrical work fixture |
| CN108544278B (en) * | 2018-06-15 | 2023-10-03 | 中原内配集团股份有限公司 | Multi-point hydraulic clamping and self-centering cylindrical workpiece clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190104 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190104 Effective date of abandoning: 20231003 |