CN112958853B - Floating self-centering quick-change gear shaping clamp - Google Patents
Floating self-centering quick-change gear shaping clamp Download PDFInfo
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- CN112958853B CN112958853B CN202110330124.6A CN202110330124A CN112958853B CN 112958853 B CN112958853 B CN 112958853B CN 202110330124 A CN202110330124 A CN 202110330124A CN 112958853 B CN112958853 B CN 112958853B
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- expansion sleeve
- base
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- floating
- expansion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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Abstract
The invention provides a floating self-centering quick-change gear shaping clamp which comprises a clamp body fixedly arranged on a machine tool workbench, wherein an inserted workpiece is clamped in the clamp body; the clamp body comprises a connecting disc, an expansion sleeve pull rod, a base, an expansion sleeve connecting ring, an expansion sleeve, an adjusting assembly and a thimble assembly; the ejector pin assembly is placed in the through hole of the base, is fixedly arranged close to the bottom of the base and is used for radially positioning a workpiece in the base with high precision; the cover adapter ring that rises overlaps the endotheca of base in, the bottom is connected the setting with the top cooperation of the cover pull rod that rises, and the bottom embedded of the cover that rises is downthehole in the base, and the bottom sets up on the top of the cover adapter ring that rises through threaded connection, and the adjustment subassembly cover is established on rising to be sheathe in for the straightness that hangs down of the cover that rises and lathe workstation, alright realization fast change production need not to dismantle other internal tooth of inserting frock parts.
Description
Technical Field
The invention relates to the technical field of mechanical clamping, in particular to a floating self-centering quick-change gear shaping clamp.
Background
At present, internal tooth inserting clamps in China are all integrally detachable, the whole set of clamps needs to be detached from a machine tool and carried to the ground during replacement, then new clamps are carried to a machine tool workbench from the ground and fixed, the weight of the clamps is about 90kg, manpower cannot be basically carried, the clamps can only be carried by means of hoisting auxiliary equipment such as a navigation vehicle, and burden and complaints of operators are caused. In addition, the internal tooth inserting clamp is generally assembled in a mode of directly matching an expanding sleeve conical surface, the machining precision is directly influenced by the manufacturing precision of the clamp, and the frequency of unqualified machining caused by the precision problem of the clamp is very high.
According to the current situation of processing in a production field, all tool parts need to be replaced during the process of changing production, the tool is heavy and difficult to disassemble, in addition, the problem of poor processing precision caused by the precision of the tool is easy to occur in a mode that a centre, a conical surface and an expansion sleeve are matched to tightly hold the excircle of the part,
disclosure of Invention
Aiming at the problems that in the prior art, all tool parts are required to be replaced during the process of replacement, the tool is heavy in weight and difficult to disassemble, and the precision is poor after the tool parts are disassembled, the invention provides the floating self-centering quick-change gear shaping clamp, which can realize the floating self-centering of an expansion sleeve during the processing and reduce the influence of the precision of the clamp on the processing precision; can only take out top mechanism, the cover that rises and change when trading and producing the debugging, alright realize fast trading and produce, need not to dismantle other internal tooth of inserting frock parts.
The invention is realized by the following technical scheme:
a floating self-centering quick-change gear shaping clamp comprises a clamp body fixedly arranged on a machine tool workbench, wherein an inserted workpiece is clamped in the clamp body; the clamp body comprises a connecting disc, an expansion sleeve pull rod, a base, an expansion sleeve connecting ring, an expansion sleeve, an adjusting assembly and a thimble assembly; the ejector pin assembly is placed in the through hole of the base and is fixedly arranged close to the bottom of the base and used for radially positioning a workpiece in the base in a high-precision manner; the expansion sleeve connecting ring is sleeved in the inner hole of the base, the bottom end of the expansion sleeve connecting ring is connected with the top end of the expansion sleeve pull rod in a matched mode, the bottom of the expansion sleeve is embedded in the inner hole of the base, the bottom end of the expansion sleeve is arranged at the top end of the expansion sleeve connecting ring through threaded connection, and the adjusting assembly is sleeved on the expansion sleeve and used for adjusting the perpendicularity of the expansion sleeve and a machine tool workbench.
Preferably, the side wall of the base is axially provided with a light hole; the expansion sleeve pull rod penetrates into the light hole, one end of the expansion sleeve pull rod is connected with the connecting disc through a bolt, and the other end of the expansion sleeve pull rod is in threaded connection with the expansion sleeve connecting ring.
Preferably, the top of the expansion sleeve is provided with a threaded hole for screwing the expansion sleeve and the expansion sleeve connecting ring.
Preferably, the adjusting device further comprises a cover plate, wherein the cover plate covers the adjusting assembly and is arranged on the base in a bolted mode.
Preferably, the adjustment assembly comprises a floating pad and a taper sleeve; the floating pad is arranged in the inner hole of the base in a clearance fit mode, the taper sleeve is arranged on the floating pad, and the inner hole surface of the taper sleeve is attached to the outer side surface of the expansion sleeve and is tightly pressed.
Furthermore, the top of the floating pad is provided with a protrusion, the bottom of the taper sleeve is provided with a groove, and the protrusion corresponds to the groove and is in clearance fit with the groove.
Preferably, the thimble assembly comprises a thimble, a thimble fixing sleeve and an axial fixing disc; the centre fixed sleeve is sleeved in the inner hole of the base, the axial fixed disk is connected to the bottom end of the centre fixed sleeve through a bolt, the centre is arranged in the centre fixed sleeve, and the bolt is connected to the axial fixed disk.
Furthermore, the positioning tip of the tip is arranged in the positioning hole of the workpiece.
Furthermore, through holes are correspondingly formed in two sides of the upper portion of the center fixing sleeve and used for extraction.
Furthermore, the tip fixing sleeve is arranged in clearance fit with the inner hole of the base.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a floating self-centering quick-change gear shaping clamp, which is convenient for taking out and replacing a thimble assembly and an expansion sleeve only during production change debugging by integrally arranging the thimble assembly and an adjusting assembly, is convenient for quick production change, does not need to disassemble other tool parts with inserted internal teeth, can position and adjust the expansion sleeve through the adjusting assembly, realizes floating self-centering of the expansion sleeve, reduces the influence of the precision of the clamp on the processing precision, and solves the problem of poor perpendicularity between an axis and a horizontal plane after the part is clamped due to the precision problem of the clamp.
Furthermore, the side wall of the base is axially provided with a light hole; one end of the expansion sleeve pull rod penetrating into the optical hole is connected with the connecting disc through a bolt, the other end of the expansion sleeve pull rod is in threaded connection with the expansion sleeve connecting ring, the connecting disc and the expansion sleeve are connected through the expansion sleeve pull rod, a machine tool workbench can conveniently pull the expansion sleeve in the base through the connecting disc, and clamping of workpieces is improved.
Furthermore, the top of the expansion sleeve is provided with a threaded hole for screwing the expansion sleeve and the expansion sleeve connecting ring, so that the expansion sleeve can be conveniently installed and adjusted.
Furthermore, the cover plate covers the adjusting assembly, and the cover plate is connected to the base through bolts and used for preventing scrap iron generated by machining from falling into the assembly body to cause part clamping damage.
Furthermore, the adjusting assembly comprises a floating pad and a taper sleeve, the floating pad is in a floating state through installation, floating self-centering of the expansion sleeve is achieved, and the influence of the self-precision of the clamp on the machining precision is reduced.
Furthermore, the top of the floating pad is provided with a protrusion, the bottom of the taper sleeve is provided with a groove, the protrusion corresponds to the groove, and the clearance fit is arranged, so that the positioning performance between the floating pad and the taper sleeve is ensured, and the workpiece positioning accuracy is prevented from being influenced by shaking.
Furthermore, the thimble assembly comprises a thimble, a thimble fixing sleeve and an axial fixing disc; the top fixed cover is nested in the hole of base, and the axial direction fixed disk passes through bolted connection in the bottom of top fixed cover, and top sets up in top fixed cover, and bolted connection sets up on the axial direction fixed disk, and thimble subassembly wholly sets up, is convenient for take out the thimble subassembly when the debugging of trading the production and changes.
Furthermore, the positioning tip of the tip is arranged in the positioning hole of the workpiece in an abutting mode, and the accuracy of the tip for positioning the workpiece is improved.
Furthermore, through holes are correspondingly formed in the two sides of the upper portion of the center fixing sleeve, so that an operator can conveniently lift the whole center fixing sleeve by using a tool and place the center fixing sleeve into an inner hole of the base.
Furthermore, the center fixing sleeve is arranged in clearance fit with the inner hole of the base, so that high-precision radial positioning of the center is guaranteed.
Drawings
FIG. 1 is a schematic structural view of a floating self-centering rapid-change gear shaping fixture according to the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a quarter sectional view of the floating self-centering rapid change gear shaping clamp of the present invention;
fig. 4 is a quarter sectional view of a quick-change center mechanism according to the present invention;
FIG. 5 is a schematic structural view of the taper sleeve of the present invention;
FIG. 6 is a schematic view of the structure of the expanding sleeve of the present invention;
FIG. 7 is a schematic view of the floating pad structure of the present invention;
FIG. 8 is a schematic structural view of the expansion sleeve connecting ring according to the present invention;
FIG. 9 is a schematic view of a base according to the present invention;
fig. 10 is a schematic view of the installation of the floating self-centering internal tooth inserting tool on a machine tool.
In the figure: 1-a connecting disc; 2-expansion sleeve pull rod; 3-a base; 4-expansion sleeve connecting ring; 5-expansion sleeve; 6-a floating pad; 7-taper sleeve; 8-cover plate; 9-a workpiece; 10-top; 11-tip fixing sleeve; 12-axially securing the disc; 13-machine tool working table.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention provides a floating self-centering quick-change gear shaping clamp, which comprises a clamp body fixedly arranged on a machine tool workbench 14, wherein according to the drawings of fig. 1, fig. 2 and fig. 3, a workpiece 9 is clamped and inserted in the clamp body, and the clamp body comprises a connecting disc 1, an expansion sleeve pull rod 2, a base 3, an expansion sleeve connecting ring 4, an expansion sleeve 5, an adjusting assembly and a thimble assembly; a through hole is formed in the base 3, as shown in fig. 9, the connecting disc 1 is arranged at the bottom of the base 3 and is connected with the base 3 through the expansion sleeve pull rod 2, and the ejector pin assembly is placed in the through hole of the base 3 and is fixedly arranged close to the bottom of the base 3 and used for radially positioning a workpiece 9 in the base 3 with high precision; the sleeve expansion connecting ring 4 is sleeved in the inner hole of the base 3, the bottom end of the sleeve expansion connecting ring is connected with the top end of the sleeve expansion pull rod 2 in a matched mode, the bottom of the sleeve expansion 5 is embedded in the inner hole of the base 3, the bottom end of the sleeve expansion 5 is arranged at the top end of the sleeve expansion connecting ring 4 through threaded connection, and the adjusting assembly is sleeved on the sleeve expansion 5 and used for adjusting the verticality of the sleeve expansion 5 and the machine tool workbench 14.
As shown in fig. 8, the expansion sleeve connecting ring 4 is provided with a threaded hole for connecting the expansion sleeve pull rod 2 in a threaded manner.
The side wall of the base 3 is axially provided with a light hole; the expansion sleeve pull rod 2 penetrates into the light hole, one end of the expansion sleeve pull rod is connected with the connecting disc 1 through a bolt, the other end of the expansion sleeve pull rod is connected with the expansion sleeve connecting ring 5 in a threaded mode, the connecting disc 1 is connected with the expansion sleeve 5 through the expansion sleeve pull rod 2, a machine tool working table 13 can conveniently pull the expansion sleeve 5 in the base 3 through the connecting disc 1, and clamping of a workpiece 9 is improved.
According to the illustration in fig. 6, the top of the expansion sleeve 5 is provided with a threaded hole for screwing the expansion sleeve 5 and the expansion sleeve connecting ring 4, so that the connection stability of the expansion sleeve 5 and the expansion sleeve connecting ring 4 is improved.
The floating self-centering quick-change gear shaping clamp further comprises a cover plate 8, wherein the cover plate 8 covers the adjusting assembly and is connected to the base 3 through a bolt, and the cover plate 8 is used for preventing scrap iron generated in machining from falling into an assembly body to cause part clamping damage.
According to fig. 5 and 7, the adjustment assembly comprises a floating pad 6 and a taper sleeve 7; the floating pad 6 is arranged in the inner hole of the base 3 in a clearance fit manner, the taper sleeve 7 is arranged on the floating pad 6, and the inner hole surface of the taper sleeve 7 is attached to the outer side surface of the expansion sleeve 5 and is arranged in a pressing manner; the top of the floating pad 6 is provided with a protrusion, the bottom of the taper sleeve 7 is provided with a groove, the protrusion corresponds to the groove, and the clearance fit is arranged, so that the positioning performance between the floating pad and the taper sleeve is ensured, and the influence of shaking on the accuracy of workpiece positioning is avoided.
According to fig. 4, the thimble assembly comprises a thimble 10, a thimble fixing sleeve 11 and an axial fixing disc 12; the centre fixing sleeve 11 is sleeved in the inner hole of the base 3, the axial fixing disc 12 is connected to the bottom end of the centre fixing sleeve 11 through a bolt, the centre 10 is arranged in the centre fixing sleeve 11 and is connected to the axial fixing disc 12 through a bolt, and the centre component is integrally arranged, so that the centre component can be conveniently taken out and replaced during production change debugging; the positioning tip of the tip 10 is arranged in the positioning hole of the workpiece 9, so that the accuracy of the tip 10 in positioning the workpiece is improved; through holes are correspondingly formed in the two sides of the upper part of the center fixing sleeve 11 and used for extraction, so that an operator can conveniently lift the whole body with a tool and put the whole body into an inner hole of the base; the center fixing sleeve 11 is arranged in clearance fit with the inner hole of the base 3, so that high-precision radial positioning of the center 10 is guaranteed.
The invention needs three expansion sleeve pull rods 2, three unthreaded holes are respectively and axially arranged on the side wall of the base 3, the three expansion sleeve pull rods 2 respectively and correspondingly penetrate through the three unthreaded holes, and one end of each expansion sleeve pull rod 2 is connected with the connecting disc 1 by adopting three M8 multiplied by 25 bolts. The centre 10, the centre fixing sleeve 11 and the axial fixing disc 12 are respectively connected through M8 multiplied by 25 bolts to form an integral assembly component; the two sides of the upper part of the centre fixing sleeve 11 are correspondingly provided with through holes with the diameter phi 14; the top of the expansion sleeve 5 is provided with two M10 threaded holes, so that an operator can conveniently screw the expansion sleeve 5 and the expansion sleeve connecting ring 4 after installing the hanging ring; the cover plate 8 is connected with the threaded holes on the base 3 by adopting four M8 multiplied by 10 bolts, four phi 9 through holes are formed in the cover plate 8, and the cover plate 8 is used for preventing scrap iron generated by processing from falling into an assembly body to cause part clamping damage.
When the floating self-centering quick-change gear shaping clamp is machined, a machine tool workbench 14 pulls a connecting disc 1, then pulls an expansion sleeve 5 through three expansion sleeve pull rods 2 and an expansion sleeve connecting ring 4, the conical surface of the expansion sleeve 5 is attached to and pressed by the conical surface of a taper sleeve 7, when the axis of the expansion sleeve 5 is not perpendicular to the workbench, the taper sleeve 7 is matched with a floating pad 6, the taper sleeve 7 can be adjusted in the front-back left-right direction, and the axis of the expansion sleeve 6 and the workbench have the required perpendicularity.
When the production change debugging is carried out, the cover plate 8 is taken down from the tool by detaching four M8 multiplied by 10 bolts, then the expansion sleeve 5 and the expansion sleeve connecting ring 4 are separated in a rotating mode in the thread direction, the whole tip assembly is lifted by a tool, a new tip assembly is put in the new tip assembly, the expansion sleeve 5 and the expansion sleeve connecting ring 4 are screwed down, and the production change installation of the clamp is completed after the cover plate 8 is fixed.
And finishing the steps to finish the self-centering processing and the rapid production change debugging of the part.
In the invention, the integrated removable top assembly is designed, and easy production change can be realized only by disassembling and changing the expansion sleeve 5 and the top assembly during production change; the taper sleeve 7 matched with the expansion sleeve 5 is in a floating state through the installed floating pad 6, and when the expansion sleeve 5 is pulled down, self-centering can be achieved through floating of the taper sleeve 7, so that the problem that the perpendicularity between the axis and the horizontal plane is poor after a part is clamped due to the accuracy problem of the tool is solved.
Claims (8)
1. A floating self-centering quick-change gear shaping clamp is characterized by comprising a clamp body fixedly arranged on a machine tool workbench (14), wherein an inserted workpiece (9) is clamped in the clamp body; the clamp body comprises a connecting disc (1), an expansion sleeve pull rod (2), a base (3), an expansion sleeve connecting ring (4), an expansion sleeve (5), an adjusting assembly and an ejector pin assembly; a through hole is formed in the base (3), the connecting disc (1) is arranged at the bottom of the base (3) and is connected with the base (3) through the expansion sleeve pull rod (2), and the ejector pin assembly is placed in the through hole of the base (3), is fixedly arranged close to the bottom of the base (3) and is used for positioning a workpiece (9) in the base (3) in a high-precision radial direction; the expansion sleeve connecting ring (4) is sleeved in the inner hole of the base (3), the bottom end of the expansion sleeve connecting ring is matched and connected with the top end of the expansion sleeve pull rod (2), the bottom of the expansion sleeve (5) is embedded in the inner hole of the base (3), the bottom end of the expansion sleeve is connected with the top end of the expansion sleeve connecting ring (4) through threads, and the adjusting assembly is sleeved on the expansion sleeve (5) and used for adjusting the verticality of the expansion sleeve (5) and the machine tool workbench (14);
the adjusting assembly comprises a floating cushion (6) and a taper sleeve (7); the floating pad (6) is arranged in an inner hole of the base (3) in a clearance fit mode, the taper sleeve (7) is arranged on the floating pad (6), and the inner hole surface of the taper sleeve (7) is attached to the outer side surface of the expansion sleeve (5) and is arranged in a pressing mode;
the top of the floating pad (6) is provided with a bulge, the bottom of the taper sleeve (7) is provided with a groove, and the bulge corresponds to the groove and is arranged in a clearance fit manner;
when processing, the machine tool workbench (14) pulls the expansion sleeve (5) through pulling the connecting disc (1) and then through the three expansion sleeve pull rods (2) and the expansion sleeve connecting ring (4), the conical surface of the expansion sleeve (5) is attached to and pressed by the conical surface of the taper sleeve (7), when the axis of the expansion sleeve (5) is not perpendicular to the workbench, the taper sleeve (7) is matched with the floating pad (6), the taper sleeve (7) can be adjusted in the front-back left-right direction, and the axis of the expansion sleeve (5) and the workbench have the required perpendicularity.
2. A floating self-centering quick-change gear shaping clamp according to claim 1, wherein the side wall of the base (3) is provided with an optical hole in the axial direction; the expansion sleeve pull rod (2) penetrates into the light hole, one end of the expansion sleeve pull rod is connected with the connecting disc (1) through a bolt, and the other end of the expansion sleeve pull rod is in threaded connection with the expansion sleeve connecting ring (4).
3. The floating self-centering quick-change gear shaping clamp according to claim 1, wherein a threaded hole is formed in the top of the expansion sleeve (5) for screwing the expansion sleeve (5) and the expansion sleeve connecting ring (4).
4. A floating self-centering quick-change gear shaping fixture according to claim 1, further comprising a cover plate (8), wherein the cover plate (8) is placed over the adjustment assembly and bolted to the base (3).
5. The floating self-centering quick-change gear shaping fixture of claim 1 wherein the ejector pin assembly comprises an ejector pin (10), an ejector pin fixing sleeve (11) and an axial fixing plate (12); the center fixing sleeve (11) is sleeved in the inner hole of the base (3), the axial fixing disc (12) is connected to the bottom end of the center fixing sleeve (11) through a bolt, the center (10) is arranged in the center fixing sleeve (11), and the bolt is connected to the axial fixing disc (12).
6. A floating self-centering quick-change gear shaping fixture according to claim 5, wherein the locating tip of the tip (10) is disposed within the locating hole of the workpiece (9).
7. The floating self-centering quick-change gear shaping clamp according to claim 5, wherein the two sides of the upper part of the tip fixing sleeve (11) are correspondingly provided with through holes for extraction.
8. A floating self-centering quick-change gear shaping clamp according to claim 5, wherein the tip fixing sleeve (11) is arranged in clearance fit with the inner hole of the base (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330124.6A CN112958853B (en) | 2021-03-26 | 2021-03-26 | Floating self-centering quick-change gear shaping clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330124.6A CN112958853B (en) | 2021-03-26 | 2021-03-26 | Floating self-centering quick-change gear shaping clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112958853A CN112958853A (en) | 2021-06-15 |
| CN112958853B true CN112958853B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110330124.6A Active CN112958853B (en) | 2021-03-26 | 2021-03-26 | Floating self-centering quick-change gear shaping clamp |
Country Status (1)
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| CN (1) | CN112958853B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01199720A (en) * | 1988-02-03 | 1989-08-11 | Musashi Seimitsu Ind Co Ltd | Device for chamfering tooth of ring gear |
| CN204912956U (en) * | 2015-07-31 | 2015-12-30 | 宝鸡法士特齿轮有限责任公司 | Major axis class part gear shaping anchor clamps |
| CN105922027A (en) * | 2016-06-04 | 2016-09-07 | 上海大学 | Expansion sleeve clamping device |
| CN209157310U (en) * | 2018-12-03 | 2019-07-26 | 浙江巨跃齿轮有限公司 | A kind of gear grinding clamp |
| CN109986141A (en) * | 2019-04-29 | 2019-07-09 | 江苏双环齿轮有限公司 | A kind of quick-replaceable gear-hobbing clamp |
| CN211516312U (en) * | 2019-11-20 | 2020-09-18 | 西安法士特汽车传动有限公司 | Universal clamp for gear shaping on end face of shaft |
| CN111014746B (en) * | 2019-12-25 | 2021-08-10 | 保定向阳航空精密机械有限公司 | Internal hydraulic floating expansion sleeve |
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2021
- 2021-03-26 CN CN202110330124.6A patent/CN112958853B/en active Active
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| CN112958853A (en) | 2021-06-15 |
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