CN211760301U - Special clamp for grinding inner hole of valve sleeve of steering gear box - Google Patents
Special clamp for grinding inner hole of valve sleeve of steering gear box Download PDFInfo
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- CN211760301U CN211760301U CN201922228833.4U CN201922228833U CN211760301U CN 211760301 U CN211760301 U CN 211760301U CN 201922228833 U CN201922228833 U CN 201922228833U CN 211760301 U CN211760301 U CN 211760301U
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- mandrel
- elastic chuck
- grinding
- jaw
- valve sleeve
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Abstract
The utility model discloses a special clamp for grinding the inner hole of a steering gear sleeve, which comprises an elastic chuck, a plurality of jack catch components arranged on the elastic chuck and a driving component for driving the elastic chuck to deform; the driving assembly comprises a mandrel and a top block for driving the mandrel to move circumferentially; the ejector block is provided with a first inclined surface, and the mandrel is provided with a second inclined surface opposite to the first inclined surface, so that the ejector block can be driven to drive the mandrel to move axially; the mandrel and the elastic chuck are coaxially arranged, and the mandrel can drive the elastic chuck to deform or reset along the axial direction so as to enable the plurality of jaw assemblies to synchronously open or contract. Implement the utility model discloses, can realize the quick clamp of work piece and press from both sides tightly, the clamp force is reliable and stable, and hole machining precision is high.
Description
Technical Field
The utility model relates to a chuck anchor clamps technical field especially relates to a special fixture of direction machine valve barrel hole grinding.
Background
The steering gear box valve pocket sets up with the cooperation of steering gear axle, and the coaxial precision requirement to the hole processing of valve pocket is than higher. When the inner hole of the valve sleeve is ground by adopting a universal machine tool, the common clamping fixture is easy to cause the deformation of a clamping excircle, so that the requirement on machining precision can not be met when the inner hole is ground. Moreover, when the shaft sleeve is fixed by the existing chuck, because synchronous motion of a plurality of clamping jaws is difficult to realize, the coaxiality of the inner hole of the valve sleeve is low. In addition, the fixing mode of the valve sleeve and the clamp is complex, so that the processing efficiency of the valve sleeve is influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that a special fixture of direction machine valve barrel hole grinding is provided, can realize the quick-witted tight of clamp of work piece, and the clamp force is reliable and stable, and hole machining precision is high.
In order to solve the technical problem, the utility model provides a special fixture for grinding the inner hole of the valve sleeve of the steering gear box, which comprises an elastic chuck, a plurality of jaw assemblies arranged on the elastic chuck and a driving assembly for driving the elastic chuck to deform;
the driving assembly comprises a mandrel and a top block for driving the mandrel to move circumferentially; the ejector block is provided with a first inclined surface, and the mandrel is provided with a second inclined surface opposite to the first inclined surface, so that the ejector block can be driven to drive the mandrel to move axially;
the mandrel and the elastic chuck are coaxially arranged, and the mandrel can drive the elastic chuck to deform or reset along the axial direction so as to enable the plurality of jaw assemblies to synchronously open or contract.
As the improvement of the technical scheme, the number of the jaw assemblies is only 3-6, and the jaw assemblies are uniformly distributed along the circumferential direction of the elastic chuck.
As an improvement of the technical scheme, the jaw assembly comprises a jaw adjusting seat and a movable jaw.
As an improvement of the technical scheme, the jaw adjusting seat is connected with the elastic chuck, and a guide post is arranged on the jaw adjusting seat;
the clamping jaw is provided with a guide groove, and the guide column extends into the guide groove;
the clamping jaw adjusting seat is further provided with an adjusting bolt, and the adjusting bolt penetrates through the clamping jaw adjusting seat to be connected with the clamping jaw.
As the improvement of the technical scheme, the elastic chuck is made of elastic pieces and is detachably connected to the connecting seat.
As an improvement of the above technical scheme, the connecting seat is provided with a first mounting hole, and the mandrel is arranged in the first mounting hole;
the connecting seat is provided with a second mounting hole along the radial direction, and the ejector block is arranged in the second mounting hole.
As an improvement of the above technical scheme, a first guide groove is arranged in the first mounting hole, and the mandrel is provided with a first guide protrusion matched with the first guide groove;
and a second guide groove is formed in the second mounting hole, and a second guide bulge matched with the second guide groove is formed in the top block.
As an improvement of the technical scheme, a fixing cover is arranged on the end face of the second mounting hole, a driving rod is arranged on the jacking block, and the driving rod is in threaded connection with the fixing cover.
As an improvement of the technical scheme, the connecting seat is provided with a connecting hole fixed with the machine tool.
As an improvement of the technical scheme, the inclination angle of the first inclined plane and the second inclined plane is 60-80 degrees.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses a drive assembly drive elasticity chuck warp and resets, drives a plurality of jack catch subassemblies of connection on elasticity chuck and opens or retract to with the work piece chucking of centre gripping between a plurality of jack catch subassemblies, its clamp force is stable, and the chucking is efficient, and its clamp force can not lead to the valve barrel to warp, can guarantee the coaxial precision of valve barrel hole man-hour.
Furthermore, the jaw assembly comprises a jaw adjusting seat and a jaw, and the relative position of the jaw and the jaw adjusting seat is adjusted through driving, so that the machining of valve sleeves with various dimensions can be met, and the production cost is reduced.
Drawings
Fig. 1 is a perspective view of the special clamp according to the present invention.
Fig. 2 is a partial sectional view of the special jig according to the present invention.
Fig. 3 is a front view of the special fixture according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
Referring to fig. 1 and 2, the utility model provides a special fixture for grinding an inner hole of a valve sleeve of a steering gear box, which comprises an elastic chuck 1, a plurality of jaw assemblies 2 arranged on the elastic chuck 1 and a driving assembly 3 for driving the elastic chuck 1 to deform;
the driving assembly 3 comprises a mandrel 31 and a top block 32 for driving the mandrel 31 to move circumferentially; the top block 32 is provided with a first inclined surface 321, and the mandrel 31 is provided with a second inclined surface 311 arranged opposite to the first inclined surface 321, so that the top block 32 can drive the mandrel 31 to move axially;
the mandrel 31 and the elastic chuck 1 are coaxially arranged, and the mandrel 31 can drive the elastic chuck 1 to deform or reset along the axial direction, so that the jaw assemblies 2 are synchronously expanded or contracted.
It should be noted that, a plurality of jaw assemblies 2 are connected to the elastic chuck 1, and the elastic chuck 1 deforms and resets along the axial direction, so that the jaw assemblies 2 can move relatively, and a workpiece can be clamped quickly. Specifically, the top block 32 is pushed inwards, so that the mandrel 31 is ejected forwards along the axis; the mandrel 31 is in contact with the elastic chuck 1 and then drives the elastic chuck 1 to deform, so that the plurality of claws are opened synchronously; placing a workpiece on a clamping station surrounded by a plurality of clamping jaw assemblies 2; outwards pulling kicking block 32, dabber 31 is along axial rearward movement, elasticity chuck 1 resets, and a plurality of jack catch subassemblies 2 reset in step, with the chucking of work piece from a plurality of position, owing to make jack catch subassembly 2 remove by a small margin through elasticity chuck 1's elastic force effect, it is less to apply the impact force on the work piece, and work piece non-deformable or slope, the axiality of hole processing is high. Adopt the mode chucking that a plurality of jack catch subassemblies 2 rebound, its chucking is efficient, and the clamp force is reliable and stable.
The number of the jaw assemblies 2 is only 3-6, and the jaw assemblies 2 are uniformly distributed along the circumferential direction of the elastic chuck 1, so that the jaw assemblies 2 move synchronously, and a round workpiece is convenient to clamp.
For improving the utility model discloses a commonality, jack catch subassembly 2 includes that the jack catch adjusts seat 21 and mobilizable jack catch 22. The clamping jaw 22 can slide relative to the clamping jaw adjusting seat 21, the outer diameter range of a workpiece which can be clamped by the clamping jaw 22 is enlarged, the machining of valve sleeves of various specifications is adapted, a clamp needs to be replaced, and the production cost is reduced.
Referring to fig. 3, the jaw adjusting base 21 is connected to the elastic chuck 1, and a guide post 211 is disposed on the jaw adjusting base 21; the clamping jaw 22 is provided with a guide groove 221, and the guide column 211 extends into the guide groove 221; still be equipped with adjusting bolt 23 on the base is adjusted to the jack catch 21, adjusting bolt 23 passes jack catch adjust base 21 with the jack catch 22 is connected. The guide post 211 extends along the axial direction, and the guide post 211 is sleeved in the guide groove 221. The adjusting bolt 23 can drive the jaw 22 to move relative to the jaw adjusting seat 21. Screwing in or out the adjusting bolt 23 to move the clamping jaws 22 in the radial direction; the guide posts 211 and the guide grooves 221 are matched with each other to guide the jaw 22 during movement, so that the reliability and stability of the jaw 22 during movement are improved.
The elastic chuck 1 is made of materials with certain elastic deformation capacity. In this embodiment, the elastic chuck 1 is made of an elastic sheet, and the elastic chuck 1 is detachably connected to the connecting seat 4. The elastic chuck 1 is connected with the connecting seat 4 through a bolt, and the elastic chuck 1 is attached to the elastic seat when being reset; after the elastic chuck 1 deforms, the middle part of the elastic chuck 1 deforms greatly, so that the jaw assembly 2 arranged on the elastic chuck 1 is driven to open.
Referring to fig. 2, the connecting seat 4 is provided with a first mounting hole 41, and the spindle 31 is arranged in the first mounting hole 41; the connecting seat 4 is provided with a second mounting hole 42 along the radial direction, and the top block 32 is arranged in the second mounting hole 42. The radial movement of the top block 32 can push the spindle 31 to move axially.
Further, first mounting hole 41 sets up along the axial, dabber 31 cover is located in first mounting hole 41, for improving dabber 31 is along deadly when the reliability moves during the motion of first mounting hole 41, be equipped with first direction recess 411 in the first mounting hole 41, be equipped with first direction arch 312 in the dabber 31, first direction arch 312 with first direction recess 411 mutually supports. Second mounting hole 42 radially sets up, kicking block 32 is located in the second mounting hole 42, for the steady of improvement kicking block 32 during the motion decide, be equipped with second direction recess 421 in the second mounting hole 42, be equipped with on the kicking block 32 the protruding 322 of second direction recess 421 looks adaptation to reliability when improving kicking block 32 motion prevents the card condition of dying because of the skew causes.
In order to facilitate driving the top block 32, a fixing cover 5 is disposed on an end surface of the second mounting hole 42, a driving rod 6 is disposed on the top block 32, the driving rod 6 is in threaded connection with the fixing cover 5, and the driving rod 6 is rotated to move the driving rod 6 inwards or outwards relative to the fixing cover 5, so as to drive the top block 32 to move inwards or outwards synchronously. The fixed cover 5 can also seal the mandrel 31 and the top block 32 in the connecting seat 4, so that impurities and the like are reduced, and lubrication is facilitated.
The connecting base 4 is provided with a connecting hole 43 fixed with the machine tool. The connecting base 4 is connected to a spindle (not shown in the drawings) of a machine tool through the connecting hole 43. Drive through the main shaft the utility model discloses an anchor clamps rotate to carry out the hole grinding to the work piece.
In addition, the inclination angles of the first inclined surface 321 and the second inclined surface 311 are 60-80 degrees. Within the range of the inclination angle, the mandrel 31 and the top block 32 are compact in structure, the movement stroke required for locking and unlocking the workpiece is small, and the clamping efficiency of the workpiece is improved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A special clamp for grinding an inner hole of a valve sleeve of a steering gear box is characterized by comprising an elastic chuck, a plurality of jaw assemblies arranged on the elastic chuck and a driving assembly for driving the elastic chuck to deform;
the driving assembly comprises a mandrel and a top block for driving the mandrel to move circumferentially; the ejector block is provided with a first inclined surface, and the mandrel is provided with a second inclined surface opposite to the first inclined surface, so that the ejector block can be driven to drive the mandrel to move axially;
the mandrel and the elastic chuck are coaxially arranged, and the mandrel can drive the elastic chuck to deform or reset along the axial direction so as to enable the plurality of jaw assemblies to synchronously open or contract.
2. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 1, wherein the number of the jaw assemblies is only 3-6, and the jaw assemblies are uniformly distributed along the circumference of the elastic chuck.
3. The special tool for grinding the inner hole of the valve sleeve of the direction machine as claimed in claim 2, wherein the jaw assembly comprises a jaw adjusting seat and a movable jaw.
4. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 3, wherein the jaw adjusting seat is connected with the elastic chuck, and a guide column is arranged on the jaw adjusting seat;
the clamping jaw is provided with a guide groove, and the guide column extends into the guide groove;
the clamping jaw adjusting seat is further provided with an adjusting bolt, and the adjusting bolt penetrates through the clamping jaw adjusting seat to be connected with the clamping jaw.
5. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 1, wherein the elastic chuck is made of elastic sheets and is detachably connected to the connecting seat.
6. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 5, wherein the connecting seat is provided with a first mounting hole, and the mandrel is arranged in the first mounting hole;
the connecting seat is provided with a second mounting hole along the radial direction, and the ejector block is arranged in the second mounting hole.
7. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 6, wherein a first guide groove is formed in the first mounting hole, and the mandrel is provided with a first guide protrusion matched with the first guide groove;
and a second guide groove is formed in the second mounting hole, and a second guide bulge matched with the second guide groove is formed in the top block.
8. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 6, wherein a fixing cover is arranged on the end surface of the second mounting hole, and a driving rod is arranged on the top block and is in threaded connection with the fixing cover.
9. The special fixture for grinding the inner hole of the valve sleeve of the steering gear box as claimed in claim 5, wherein the connecting base is provided with a connecting hole for fixing with a machine tool.
10. The special fixture for grinding the inner hole of the valve sleeve of the steering gear as claimed in any one of claims 1 to 9, wherein the inclination angle of the first inclined surface and the second inclined surface is 60 to 80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228833.4U CN211760301U (en) | 2019-12-12 | 2019-12-12 | Special clamp for grinding inner hole of valve sleeve of steering gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228833.4U CN211760301U (en) | 2019-12-12 | 2019-12-12 | Special clamp for grinding inner hole of valve sleeve of steering gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211760301U true CN211760301U (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922228833.4U Active CN211760301U (en) | 2019-12-12 | 2019-12-12 | Special clamp for grinding inner hole of valve sleeve of steering gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211760301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274046A (en) * | 2021-12-29 | 2022-04-05 | 事必得精密机械(苏州)有限公司 | Processing frock suitable for no centre bore part peripheral milling |
-
2019
- 2019-12-12 CN CN201922228833.4U patent/CN211760301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274046A (en) * | 2021-12-29 | 2022-04-05 | 事必得精密机械(苏州)有限公司 | Processing frock suitable for no centre bore part peripheral milling |
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