CN210081183U - Clamp for machining end face of cylinder - Google Patents
Clamp for machining end face of cylinder Download PDFInfo
- Publication number
- CN210081183U CN210081183U CN201920537976.0U CN201920537976U CN210081183U CN 210081183 U CN210081183 U CN 210081183U CN 201920537976 U CN201920537976 U CN 201920537976U CN 210081183 U CN210081183 U CN 210081183U
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- radial supporting
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Abstract
A kind of clamp to process the end surface of the air cylinder, including the supporting mechanism, this supporting mechanism includes several radial supporting disks, front connection pad, back adapter ring, inner support piece and several locating shafts, the radial supporting disk is fan-shaped, through the supporting mechanism of the above-mentioned structure, while using, shrink several radial supporting disks relatively at present, reduce the diameter size in order to put into the cylinder bore conveniently, then through controlling the inner support piece to come in and go out, form the complete taper hole that the round form arranges of dividing coaxially equally among several radial supporting disks, because the radial supporting disk is fan-shaped, while shrinking radially, can make the complete taper hole shrink, through inner support mechanism automatic alignment piston cylinder bore central axis concentric with lathe main axis, perpendicular to lathe chuck; thereby ensuring that the two end faces of the cylinder barrel are perpendicular to the central axis of the cylinder barrel when the end faces of the cylinder barrel are processed. The problems of jamming, creeping, short service life and the like of the cylinder caused by substandard verticality of the end face and the piston cylinder during operation are solved.
Description
Technical Field
The utility model relates to a cylinder machining equipment field, concretely relates to anchor clamps of processing cylinder terminal surface.
Background
In the manufacturing process of the cylinder barrel of the hydraulic cylinder or the air cylinder, only an inner hole of an outsourced seamless steel pipe is subjected to finish machining, and the outer circle and two end faces of the outsourced seamless steel pipe are not subjected to machining or finish machining, so that secondary machining is required.
In order to meet the requirement of geometric tolerance, a section of outer circle concentric with an inner hole is generally turned (the processed surface is a technological reference), and then the section of outer circle is supported by a center frame for reprocessing. The section of excircle belongs to the technological requirement, and is not the product design requirement, but if not processed, each subsequent procedure can not be carried out.
The outer circle of the section not only influences the appearance quality of a product, but also weakens the strength of the cylinder barrel; in addition, even if the section of excircle is processed, the clamping and the alignment are difficult, if a three-jaw self-centering chuck is adopted to expand an inner hole at one end and align an inner hole at the other end, the labor and the time are wasted, and the quality is not ensured; the four-jaw independent chuck is adopted to clamp the excircle and align the inner hole at the other end, and the alignment is more difficult because the centers of the inner holes at the two ends are required to be simultaneously ensured to be coincident with the center of a machine tool.
The two clamping and aligning modes need to lead the chuck jaws to be in line contact with the workpiece, otherwise, the other end of the chuck jaws cannot be aligned, the inner hole is damaged by the clamping mode, and the cutting resistance and the other external force resistance of the chuck jaws are also low.
In order to improve the capability of resisting cutting force and other external forces, the end face is often machined firstly, and then the tailstock center is used for propping against the outer surface of the section to be machined, but the problem of low resistance in end face machining still exists.
At present, the most reliable method for processing the section of outer surface is to use a cylindrical mandrel for processing, particularly a centering clamping mandrel for processing, but the following problems are still difficult to solve in practice: 1) although the diameters of the inner holes of the seamless steel pipes are the same, different centering clamping mandrels are required to be equipped when the lengths of the inner holes of the seamless steel pipes are different; 2) the whole length of the centering and clamping mandrel passes through the inner hole of the seamless steel tube, so that the surface of the inner hole cannot be guaranteed not to be damaged; 3) large diameter, centering and clamping mandrels are too heavy for their construction. At present, a simple centering clamping mandrel is provided, which has the problems that the inner hole surface is almost damaged after clamping, the mandrel cannot be taken out after clamping sometimes, and seamless steel pipes with different lengths need to be used although the inner hole diameter is the same, so that the processing cost is high.
Disclosure of Invention
The utility model discloses a solve not enough of above-mentioned technique, provide the anchor clamps that can assist processing cylinder terminal surface. The technical scheme of the utility model: a fixture for machining the end face of cylinder is composed of a supporting mechanism consisting of several radial supporting disks, front connecting disk, back connecting ring, internal supporting part and locating axles, and several locating axles, which are arranged coaxially between said radial supporting disks and with several locating holes on their front and back connecting disks, the locating shaft comprises connecting sections at the head end and the tail end and shaft shoulders arranged between the two connecting sections, the diameter of each shaft shoulder is matched with the diameter of the long round hole and larger than the diameter of the connecting section, the axial length of each shaft shoulder is larger than the thickness from the front end face to the rear end face, the two connecting sections of the locating shaft are respectively matched and connected with the locating holes of the front connecting disc and the rear connecting ring, the shaft shoulders of the locating shaft are inserted into the long round hole to be in sliding fit, the shape of the inner supporting piece is matched with the shape of the conical hole, and the radial sliding of the plurality of radial supporting discs is controlled through the coming-in.
By adopting the technical scheme, through the supporting mechanism with the structure, when the supporting mechanism is used, the plurality of radial supporting disks are contracted relatively, the diameter is reduced so as to be conveniently placed into the inner hole of the cylinder, then the inner supporting piece is controlled to come in and go out, and the plurality of radial supporting disks are coaxially arranged to form the complete taper hole in the shape of the equant circle. And through withdrawing from the inner supporting piece, the supporting mechanism can be quickly detached.
The diameter of the shaft shoulder of the positioning shaft is matched with the diameter of the long round hole and is larger than the diameter of the connecting section, and the axial length of the shaft shoulder is larger than the thickness from the front end face to the rear end face.
The central axis of the inner hole of the piston cylinder barrel is automatically aligned by the inner support mechanism to be concentric with a machine tool spindle and to be vertical to a machine tool chuck; thereby ensuring that the two end faces of the cylinder barrel are perpendicular to the central axis of the cylinder barrel when the end faces of the cylinder barrel are processed. The problems of jamming, creeping, short service life and the like of the cylinder caused by substandard verticality of the end face and the piston cylinder during operation are solved.
The utility model discloses a further setting: the supporting mechanism further comprises a plurality of nuts, the positioning holes of the front connecting disc are threaded holes, threads are arranged on the two connecting sections of the positioning shaft, one end of the positioning shaft is in threaded fit with the threaded holes of the front connecting disc, and the other end of the positioning shaft penetrates through the positioning holes of the rear connecting ring to be screwed and fixed with the nuts.
By adopting the technical scheme, the connection reliability among the front connecting disc, the positioning shaft and the rear connecting ring is ensured, and the disassembly and the assembly are convenient.
The utility model discloses a further setting: the inner supporting piece is in a circular truncated cone shape, and the size of the circular truncated cone is matched with that of the conical hole.
By adopting the technical scheme, the circular truncated cone is arranged, so that the inner supporting piece and the wedge-shaped surface of the conical hole slide more smoothly.
The utility model discloses a further setting: the outer peripheral surface of the radial supporting disc is welded with a low-hardness material layer.
By adopting the technical scheme, the stainless steel material with the grade of 316L can be selected as the low-hardness material, and because the peripheral surface of the radial support disc is the surface in contact with the inner hole of the cylinder, the low-hardness material laying layer is formed by surfacing, so that the surface of the inner hole of the cylinder can be prevented from being damaged when in contact.
The utility model discloses a further setting: the clamp also comprises a machine tool tail cone which axially pushes the inner supporting piece to go deep into the tapered holes of the plurality of radial supporting discs.
By adopting the technical scheme, the processing of the end surface of the cylinder needs to be carried out on a machine tool, and the movement of the inner support piece can be driven by the tail cone of the machine tool.
The utility model discloses a further setting: the anchor clamps still include the three-jaw chuck, preceding connection pad is kept away from relatively on the terminal surface that radially props the dish, and the coaxial jack catch go-between that is provided with, the jack catch of three-jaw chuck is located the interior anchor ring one side of jack catch go-between, and this radial top of jack catch radially props the dish, controls a plurality of and radially props the dish and radially slides.
By adopting the technical scheme, the three-jaw chuck on the machine tool drives the radial supporting disc to radially slide, so that the clamping jaws are prevented from damaging the inner hole of the cylinder.
The utility model discloses a further setting: the clamp further comprises a plurality of screws, countersunk holes are formed in the clamping jaw connecting rings, threaded holes are formed in the clamping jaws corresponding to the countersunk holes, and the screws penetrate through the countersunk holes and are connected with the threaded holes.
Adopt above-mentioned technical scheme for jack catch and radial stay dish detachable fixed connection avoid the jack catch and its slippage when processing, cause the condition that the cylinder falls.
The utility model discloses a further setting: two sets of supporting mechanisms are arranged at the inner hole of the steel pipe along the axial direction, one set of supporting mechanisms is in linkage fit with a tail cone of a machine tool, the other set of supporting mechanisms is in linkage fit with the three-jaw chuck, screw rod holes are formed in the centers of the three-jaw chuck and the front connecting disc, the fixture further comprises a screw rod, and the two sets of supporting mechanisms and the three-jaw chuck are all sleeved on the screw rod through the screw rod holes.
Adopt above-mentioned technical scheme, through the lead screw that sets up, because the caudal vertebra on the lathe leads to producing with the three-jaw chuck and sets up for coaxial center, set up screw hole, the lead screw at three-jaw chuck center, can make the cover establish two sets of supporting mechanism on the lead screw, form with the axle center setting with lathe caudal vertebra, three-jaw chuck, and then guaranteed the clamping cylinder on supporting mechanism, can Zhao just fast. And two sets of supporting mechanism that set up can set up the both ends at the cylinder hole, keeps the cylinder balanced, avoids off-centre.
The utility model discloses a further setting: the plurality of radial supporting discs are three radial supporting discs, and the plurality of positioning shafts and the nuts are three.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 1;
FIG. 2 is a block diagram of an embodiment of the present invention, FIG. 2;
fig. 3 is an exploded view of an embodiment of the present invention;
fig. 4 is a structural diagram of the clamping state of the clamp and the steel pipe according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1-4, a fixture for processing an end surface of a cylinder includes a supporting mechanism 1, the supporting mechanism 1 includes a plurality of radial supporting disks 2, a front connecting disk 3, a rear connecting ring 4, an inner supporting member 11, and a plurality of positioning shafts 5, the radial supporting disks 2 are fan-shaped, and include an outer peripheral surface 21, a front end surface 22, a rear end surface 23, and a tapered hole section 24, the tapered hole section 24 is disposed at a circular center angle of the fan-shaped radial supporting disk 2, and includes a large diameter end 241 and a small diameter end 242, the radial supporting disk 2 is radially provided with a long circular hole 25 penetrating through the front end surface 22 and the rear end surface 23, the plurality of radial supporting disks 2 are coaxially arranged in equal circles, the tapered hole sections 24 of the plurality of radial supporting disks 2 surround to form a tapered hole 243, the front connecting disk 3 and the rear connecting ring 4 are respectively disposed at two sides of the front end surface 22 and the rear end surface 23 of the plurality of radial supporting disks 2, and are coaxially, the positions of the front connecting disc 3 and the rear connecting ring 4 corresponding to the oblong holes 25 of the plurality of radial supporting discs 2 are respectively provided with a positioning hole 31, each positioning shaft 5 comprises connecting sections 51 at the head end and the tail end and a shaft shoulder 52 arranged between the two connecting sections 51, the diameter of the shaft shoulder 52 is matched with the diameter of the oblong hole 25 and is larger than the diameter of the connecting section 51, the axial length of the shaft shoulder 52 is larger than the thickness from the front end surface 22 to the rear end surface 23, the two connecting sections 51 of the positioning shaft 5 are respectively matched and connected with the positioning holes 31 of the front connecting disc 3 and the rear connecting ring 4, the shaft shoulder 52 of the positioning shaft 5 is inserted into the oblong hole 25 to be in sliding fit, the shape of the inner supporting piece 11 is matched with the tapered hole 243, and the radial sliding of the plurality of radial supporting discs 2 is controlled.
When the supporting mechanism 1 with the structure is used, the radial supporting discs 2 are relatively contracted, the diameter is reduced so as to be conveniently placed into an inner hole of the cylinder, then the inner supporting piece 11 is controlled to come in and go out, the complete conical holes 243 formed by coaxially equally-divided circular arrangement among the radial supporting discs 2 are formed, because the radial supporting discs 2 are fan-shaped, the complete conical holes 243 can be reduced when the radial supporting discs 2 are contracted, at the moment, the inner supporting piece 11 enters the conical holes 243, the radial supporting discs 2 are driven to be limited by the long circular holes 25 and the positioning shaft 5 through the sliding fit of the outer peripheral surface 21 of the inner supporting piece 11 and the wedge-shaped surface of the inner wall of the conical hole 243, the radial supporting discs expand along the radial sliding direction until the outer peripheral surface 21 of the circular arc of the radial supporting discs 2 contacts with the inner hole wall of the cylinder. And the supporting mechanism 1 can be quickly disassembled by withdrawing the inner support 11.
The diameter of the shaft shoulder 52 of the positioning shaft 5 is matched with the diameter of the long circular hole 25 and is larger than the diameter of the connecting section 51, and the axial length of the shaft shoulder 52 is larger than the thickness from the front end face 22 to the rear end face 23, so that the problem that when the front connecting disc 3, the radial supporting disc 2 and the rear connecting ring 4 are connected, the front connecting disc 3 and the rear connecting ring 4 are clamped to the radial supporting disc 2, and the radial sliding cannot be caused can be solved.
The supporting mechanism 1 further comprises a plurality of nuts 12, the positioning holes 31 of the front connecting disc 3 are threaded holes, two connecting sections 51 of the positioning shaft 5 are provided with threads, one end of the positioning shaft 5 is in threaded fit with the threaded holes of the front connecting disc 3, and the other end of the positioning shaft penetrates through the positioning holes 31 of the rear connecting ring 4 to be screwed and fixed with the nuts 12.
The connection reliability among the front connecting disc 3, the positioning shaft 5 and the rear connecting ring 4 is ensured, and the disassembly and the assembly are convenient.
The inner support 11 is in the shape of a circular truncated cone, and the size of the circular truncated cone is matched with that of the tapered hole 243.
The inner support 11 and the wedge-shaped surface of the tapered hole 243 slide more smoothly by being arranged as a circular truncated cone.
The outer peripheral surface 21 of the radial supporting disc 2 is overlaid with a low-hardness material layer.
The low-hardness material can be made of 316L stainless steel, and because the outer peripheral surface 21 of the radial supporting disc 2 is a surface in contact with the inner hole of the cylinder, a low-hardness material layer is formed by surfacing, the surface of the inner hole of the cylinder can be prevented from being damaged when in contact.
The clamp also comprises a machine tail cone 6, and the machine tail cone 6 axially pushes the inner support member 11 to penetrate into the tapered holes 243 of the radial support discs 2.
The processing of the end surface of the cylinder needs to be carried out on a machine tool, and the tail cone 6 of the machine tool can be used for driving the inner strutting piece 11 to move.
Anchor clamps still include three-jaw chuck 7, preceding connection pad 3 is kept away from relatively on radially propping the terminal surface of dish 2, and the coaxial jack catch go-between that is provided with 32, three-jaw chuck 7's jack catch 71 is located jack catch go-between 32's interior anchor ring one side, and this jack catch 71 radially pushes up radially props dish 2, controls a plurality of and radially props dish 2 and radially slides.
The three-jaw chuck 7 on the machine tool drives the radial supporting disc 2 to radially slide, so that the clamping jaws 71 are prevented from damaging the inner hole of the cylinder.
The clamp further comprises a plurality of screws 33, countersunk holes 34 are formed in the clamping jaw connecting rings 32, threaded holes are formed in the clamping jaws 71 corresponding to the countersunk holes 34, and the screws 33 penetrate through the countersunk holes 34 to be connected with the threaded holes.
The clamping jaw 71 and the radial support disc 2 are detachably and fixedly connected, and the phenomenon that the clamping jaw 71 slips off when machining is avoided, so that the air cylinder falls off is avoided.
The inner hole of the steel pipe 9 is provided with two groups of supporting mechanisms 1 along the axial direction, one group of supporting mechanisms is in linkage fit with a tail vertebra 6 of a machine tool, the other group of supporting mechanisms is in linkage fit with a three-jaw chuck 7, the centers of the three-jaw chuck 7 and the front connecting disc 3 are provided with screw rods 8 and holes 35, the fixture further comprises screw rods 8, and the two groups of supporting mechanisms 1 and the three-jaw chuck 7 are sleeved on the screw rods 8 through the screw rods 8 and the holes 35.
Through the lead screw 8 that sets up, because the coccyx on the lathe leads to producing with the axle center setting with three-jaw chuck 7, set up 8 holes 35 of lead screw, lead screw 8 at three-jaw chuck 7 center, can make the cover establish two sets of supporting mechanism 1 on the lead screw 8, form with axle center setting with lathe coccyx 6, three-jaw chuck 7, and then guaranteed the clamping cylinder on supporting mechanism 1, can Zhao just fast. And two sets of supporting mechanism 1 that set up can set up the both ends at the cylinder hole, keeps the cylinder balanced, avoids off-centre.
The plurality of radial supporting discs 2 are three radial supporting discs 2, and the plurality of positioning shafts 5 and the nuts 12 are three.
Claims (9)
1. The utility model provides a processing cylinder terminal surface's anchor clamps which characterized in that: the supporting mechanism comprises a plurality of radial supporting discs, a front connecting disc, a rear connecting ring, an inner supporting piece and a plurality of positioning shafts, wherein each radial supporting disc is fan-shaped and comprises an outer peripheral surface, a front end surface, a rear end surface and a conical hole section, the conical hole section is arranged at the position of the circle center of each fan-shaped radial supporting disc and comprises a large-diameter end and a small-diameter end, long round holes penetrating through the front end surface and the rear end surface are radially arranged on the radial supporting discs, the radial supporting discs are coaxially arranged in a circle-dividing manner, the conical hole sections of the radial supporting discs surround to form conical holes, the front connecting disc and the rear connecting disc are respectively arranged on the two sides of the front end surface and the rear end surface of each radial supporting disc, the three radial supporting discs are coaxially arranged, the positions of the long round holes of the radial supporting discs corresponding to the front connecting disc and the rear connecting disc are respectively provided with positioning holes, each positioning shaft comprises a connecting section at the head end and the tail end and a shaft, the diameter of the shaft shoulder is matched with the diameter of the long round hole and larger than the diameter of the connecting section, the axial length of the shaft shoulder is larger than the thickness from the front end face to the rear end face, the two connecting sections of the positioning shaft are respectively matched and connected with the positioning holes of the front connecting disc and the rear connecting ring, the shaft shoulder of the positioning shaft is inserted into the long round hole and is in sliding fit, the shape of the inner supporting piece is matched with the conical hole, and the radial sliding of the plurality of radial supporting discs is controlled through the inlet conical hole and the outlet conical hole.
2. The jig for processing a cylinder end face according to claim 1, wherein: the supporting mechanism further comprises a plurality of nuts, the positioning holes of the front connecting disc are threaded holes, threads are arranged on the two connecting sections of the positioning shaft, one end of the positioning shaft is in threaded fit with the threaded holes of the front connecting disc, and the other end of the positioning shaft penetrates through the positioning holes of the rear connecting ring to be screwed and fixed with the nuts.
3. The jig for processing a cylinder end face according to claim 1, wherein: the inner supporting piece is in a circular truncated cone shape, and the size of the circular truncated cone is matched with that of the conical hole.
4. The jig for processing a cylinder end face according to claim 1, wherein: the outer peripheral surface of the radial supporting disc is welded with a low-hardness material layer.
5. The jig for machining a cylinder end face according to any one of claims 1 to 4, characterized in that: the clamp also comprises a machine tool tail cone which axially pushes the inner supporting piece to go deep into the tapered holes of the plurality of radial supporting discs.
6. The jig for processing a cylinder end face according to claim 5, wherein: the anchor clamps still include the three-jaw chuck, preceding connection pad is kept away from relatively on the terminal surface that radially props the dish, and the coaxial jack catch go-between that is provided with, the jack catch of three-jaw chuck is located the interior anchor ring one side of jack catch go-between, and this radial top of jack catch radially props the dish, controls a plurality of and radially props the dish and radially slides.
7. The jig for processing a cylinder end face according to claim 6, wherein: the clamp further comprises a plurality of screws, countersunk holes are formed in the clamping jaw connecting rings, threaded holes are formed in the clamping jaws corresponding to the countersunk holes, and the screws penetrate through the countersunk holes and are connected with the threaded holes.
8. The jig for processing a cylinder end face according to claim 7, wherein: two sets of supporting mechanisms are arranged at the inner hole of the steel pipe along the axial direction, one set of supporting mechanisms is in linkage fit with a tail cone of a machine tool, the other set of supporting mechanisms is in linkage fit with the three-jaw chuck, screw rod holes are formed in the centers of the three-jaw chuck and the front connecting disc, the fixture further comprises a screw rod, and the two sets of supporting mechanisms and the three-jaw chuck are all sleeved on the screw rod through the screw rod holes.
9. The jig for processing a cylinder end face according to claim 8, wherein: the plurality of radial supporting discs are three radial supporting discs, and the plurality of positioning shafts and the nuts are three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920537976.0U CN210081183U (en) | 2019-04-18 | 2019-04-18 | Clamp for machining end face of cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920537976.0U CN210081183U (en) | 2019-04-18 | 2019-04-18 | Clamp for machining end face of cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210081183U true CN210081183U (en) | 2020-02-18 |
Family
ID=69475139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920537976.0U Expired - Fee Related CN210081183U (en) | 2019-04-18 | 2019-04-18 | Clamp for machining end face of cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210081183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319433A (en) * | 2021-06-23 | 2021-08-31 | 三一汽车制造有限公司 | Automatic roller welding production line and roller production method |
| CN113458433A (en) * | 2021-07-28 | 2021-10-01 | 宜春市诚顺机械制造有限公司 | Clamping tool for processing external thread of large thin-wall cylinder |
-
2019
- 2019-04-18 CN CN201920537976.0U patent/CN210081183U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319433A (en) * | 2021-06-23 | 2021-08-31 | 三一汽车制造有限公司 | Automatic roller welding production line and roller production method |
| CN113319433B (en) * | 2021-06-23 | 2023-09-05 | 三一汽车制造有限公司 | Automatic roller welding production line and roller production method |
| CN113458433A (en) * | 2021-07-28 | 2021-10-01 | 宜春市诚顺机械制造有限公司 | Clamping tool for processing external thread of large thin-wall cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |