CN202952098U - Chuck - Google Patents
Chuck Download PDFInfo
- Publication number
- CN202952098U CN202952098U CN 201220726442 CN201220726442U CN202952098U CN 202952098 U CN202952098 U CN 202952098U CN 201220726442 CN201220726442 CN 201220726442 CN 201220726442 U CN201220726442 U CN 201220726442U CN 202952098 U CN202952098 U CN 202952098U
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- chuck
- workpiece
- alloy sleeve
- carbide alloy
- endoporus
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Abstract
The utility model discloses a chuck, comprising a chuck body, wherein the chuck body is provided with an inner hole along the axial direction. The chuck is characterized in that the inner hole is further fixedly provided with a hard alloy sleeve in an embedded manner at the front end of the chuck body, and the hard alloy sleeve is provided with a tube hole in which a workpiece can be rotationally arranged in a penetrating manner. The chuck disclosed by the utility model has the following advantages that the hard alloy sleeve is fixedly arranged in the inner hole of the chuck, thus reducing the wear of the inner hole of the chuck during the machining process, and improving the wear resistance of the chuck; the head part of the chuck has certain elasticity by adopting a structure which is uniformly and equally divided, thus preventing the workpiece from locking due to too tight clamping; and the uniformity of a material of the chuck can be ensured, the deformation of the chuck can be reduced, and the concentricity and the roughness of the chuck can be improved by adopting the novel machining process, the whole process flow is low in cost and easy to realize, and the machined chuck is good in quality, thus ensuring the high accuracy and the good quality of the workpiece machined via the chuck.
Description
Technical field
The utility model relates to the processing technology of a kind of chuck and this chuck thereof.
Background technology
Elongated precision workpiece, under the effect of cutting force, easily produces larger flexural deformation, and then can have influence on machining accuracy, increases the workpiece difficulty of processing.In order to eliminate above-mentioned unfavorable factor, reduce the stress deformation of this class slender piece in working angles, all can be mounted with chuck at the lathe bed middle part of lathe or the front of main spindle box, as shown in Figure 1, such chuck is mainly used in the precision workpiece of processing slim, and chuck includes body 1 ' and axially offers axis hole 11 ' along body 1 ', and workpiece is arranged in the axis hole 11 ' of chuck, this chuck plays a part the support elongated workpiece, can be used for directly bearing the cutting force that adds man-hour.
Usually, the distance of chuck and cutter is nearer, and the flexural deformation of workpiece to be machined when machined is less, and, consider that cutter is generally fixed, require workpiece can rotate in process, between the endoporus of workpiece and chuck, also should keep certain gap; When the excesssive gap between chuck and workpiece, can affect the precision of processing work, when the gap between chuck and workpiece is too small, can damage fineness and the precision of surface of the work, can produce and kill phenomenon when serious.Therefore, the gap between chuck and workpiece should be controlled in a suitable scope, to guarantee that workpiece can rotate with charging vertically normally in chuck, moves.At present, workpiece of the prior art is directly to be arranged in the axis hole of chuck, processed workpiece rotates in the endoporus of chuck, directly contact between workpiece and chuck, can produce friction between the two, the roughness of chuck endoporus is low, is easy to wearing and tearing, finally can cause the concentricity of workpiece and chuck axis hole poor, the precision of processing work reduces.
The utility model content
Technical problem to be solved in the utility model is the chuck that provides a kind of wearability for above-mentioned prior art present situation well and can guarantee processed workpiece accuracy.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of chuck, include the chuck body, this chuck body offers endoporus vertically, it is characterized in that: described endoporus also fixedly is embedded with the carbide alloy sleeve pipe at the front end that is positioned at described chuck body, and this carbide alloy sleeve pipe has and can rotate the pore worn for workpiece.
In order to reduce because of workpiece in process, cause the wearing and tearing near the inner hole surface of chuck head because acting on the cutting force of chuck head, as preferably, described pore is back taper, and, near the pore diameter of lathe tool one end, be less than the pore diameter away from lathe tool one end.Insertion when inverted cone-shaped structure had both facilitated workpiece to install, can effectively prevent from again causing workpiece to rock the flexural deformation of generation in the chuck endoporus because the change of head diameter of bore is large.
For elasticity and the flexibility that increases chuck, guarantee that the workpiece in process rotates in the chuck endoporus, as preferably, described chuck body forms a plurality of pawl lobes that can open or draw at the front end of described endoporus, correspondingly, described carbide alloy sleeve pipe is partitioned into a plurality of carbide alloy substrates of connection corresponding to each described pawl lobe.
In order to facilitate the assembly connection of chuck on chuck clamping body, as preferably, the afterbody of described chuck body has external screw thread, and this chuck body is offering the location stern notch by caudal periphery wall.So the afterbody of chuck is realized being connected by screw thread and chuck clamping body, realize axial location by the location stern notch again simultaneously, prevent chuck rotation in clamping process, both convenient the installation, can guarantee the reliability that chuck is fixing again.
Compared with prior art, the utility model has the advantage of: be fixed with the carbide alloy sleeve pipe in existing chuck endoporus, reduced the wearing and tearing of chuck endoporus in the process, improved the wearability of chuck, extended the service life of chuck; Secondly, the head of chuck adopts the structure of even equal portions, makes the head of chuck have certain elasticity, has both facilitated packing into of workpiece, guarantees again the chucking power of chuck and workpiece, prevents that workpiece from killing because of the clamping tension, the raising processing safety.
The accompanying drawing explanation
Fig. 1 is chuck structure schematic diagram of the prior art.
The chuck structure schematic diagram that Fig. 2 is the utility model embodiment.
Fig. 3 is that the A-A shown in Fig. 2 is to cutaway view.
Fig. 4 is that the B shown in Fig. 2 is to view.
The local structure for amplifying schematic diagram that the chuck that Fig. 5 is the utility model embodiment coordinates with workpiece.
The chuck that Fig. 6 is the utility model embodiment is used state diagram.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 2～Fig. 6, the present embodiment discloses a kind of chuck for the processing slim precision workpiece, this chuck includes chuck body 1, chuck body 1 offers endoporus 11 vertically, endoporus 11 also fixedly is embedded with carbide alloy sleeve pipe 2 at the front end that is positioned at chuck body 1, this carbide alloy sleeve pipe 2 has and can rotate the pore 21 worn for workpiece, between carbide alloy sleeve pipe 2 and chuck endoporus 11, by brazing, is fixed in one.
Wherein, pore 21 inner chambers of carbide alloy sleeve pipe 2 are back taper 22, and pore 21 diameters of close lathe tool one end are less than pore 21 diameters away from lathe tool one end; Chuck body 1 forms the pawl lobe 12 of expansible or gathering at the circumferential even partition of the front end edge of endoporus 11, in order to guarantee bonding strength, increase the elasticity of chuck simultaneously, the pawl lobe 12 of the present embodiment preferably is divided into three, correspondingly, carbide alloy sleeve pipe 2 becomes three carbide alloy substrates 22 of connection corresponding to each pawl lobe 12 along circumferential even partition; When Segmentation Number very little, beat less than the flexible requirement of chuck, when Segmentation Number too many (as quarter, five equal portions etc.), the welding contact area between carbide alloy sleeve pipe 2 and chuck reduces, easily cause the carbide alloy sleeve pipe 2 after cutting to drop, therefore, selecting to be divided into three equal parts is best preferred version.
In order to facilitate the installation of chuck, the afterbody of chuck body 1 has screw thread 15, and this chuck body 1, by offering location stern notch 16 on caudal periphery wall, is located stern notch 16 and can be prevented that chuck from rotating when mounted.
The chuck of the present embodiment has adopted carbide alloy sleeve pipe 2, there is better wearability, extended the service life of chuck, and the head of chuck adopts pawl lobe 12 formula structures, there is certain elasticity, assembling and feeding that can convenient workpiece 4, can also reduce the stress that rigid contact produces between the two, improves precision and the quality of workpiece 4 processing.
The above-mentioned chuck of the present embodiment processes by following technical process, and particularly, this technical process includes following steps:
1, blanking: the bar of T10A of take is raw material, and blanking obtains the stock that diameter is φ 18 * 60.
2, heat treatment: the stock of step 1 heats and is incubated 1～2 hour under 750～770 degree, makes the material structure of stock even; Stove is as cold as the 550 degree air cooling of coming out of the stove, and realizes annealing, and the hardness of stock is not more than 197HB.
3, turning processing:
1), Vehicle Processing obtains chuck body 1 basic structure as shown in Figure 2, this chuck body 1 has the screw thread 15 of cylindrical 13, the conical surface 14 and afterbody;
2), the cylindrical 13 of above-mentioned chuck body 1 and the conical surface 14, screw thread will guarantee clamped one time processing, avoids producing cylindrical 13, the conical surface 14 and screw thread decentraction, reduces the clamping error;
3), during machining screw, should first remove part surplus (can first choose several cuttves), and then use the finish turning screw thread;
4), when boring, reserve the surplus (as preferably reserved 0.2 millimeter surplus) of 0.15～0.25 millimeter, then use the drill bit conformed to basic size to be processed, guarantee the concentricity of chuck simultaneously;
5), processing is during the conical surface 14, can not go out with forming cutter one train, should adjust the lathe carriage angle with fine turning lathe, then carries out the conical surface 14 Vehicle Processings, the concentricity with the angle that guarantees the conical surface 14 and the conical surface 14 with cylindrical 13;
6), the endoporus 11 of setting chuck body is φ D for the aperture that clamps carbide alloy sleeve pipe 2, the endoporus 11 of chuck body is the diameter that φ d(φ d is greater than workpiece 4 blanks for the aperture that wears workpiece 4), wherein, the concentricity of aperture φ D and aperture φ d is less than 0.03～0.05 millimeter, once aperture φ D and aperture φ d occur eccentric, will cause the carbide alloy sleeve pipe substrate to occur during the line Casing-Cutting in the back inhomogeneous; And, for the cylindrical that guarantees the carbide alloy sleeve pipe at chuck body center, the concentricity of aperture φ D and the conical surface 14, cylindrical 13 is less than 0.05～0.08 millimeter, similarly, for the endoporus that guarantees the carbide alloy sleeve pipe, at center of collet, the concentricity of aperture φ d and the conical surface 14, cylindrical 13 also is less than 0.05～0.08 millimeter.
4, check: check each several part size and roughness after above-mentioned turning is processed, the satisfactory next process that enters.
5, welding carbide alloy sleeve pipe 2:
1), by specification, select the carbide alloy sleeve pipe 2 that hardness is 85～90HRA, the de-black skin is to remove the surface oxide layer of carbide alloy sleeve pipe 2, the internal diameter surplus of carbide alloy sleeve pipe 2 is generally selected 0.2～0.4 millimeter, maximum is no more than 0.4 millimeter, then, pore 21 and the cylindrical 13 of Pattern In Grinding Cemented Carbide sleeve pipe 2, and guarantee that the pore 21 of carbide alloy sleeve pipe 2 is no more than 0.05 millimeter with cylindrical 13 concentricitys;
2), clean carbide alloy sleeve pipe 2 and chuck body 1, during due to brazing, the copper water of fusing likely flows in the pore 21 of carbide alloy sleeve pipe 2, and residual copper vestige can't be removed, therefore, need to be with the pore 21 of the stifled carbide alloy sleeve pipe 2 of pencil plug before welding;
3) between the aperture φ D of the cylindrical 13 of carbide alloy sleeve pipe 2 and chuck endoporus 11, be, carbide alloy sleeve pipe 2 is packed in the endoporus 11 of chuck body 1, interference fits;
4), chuck and 2 brazings of carbide alloy sleeve pipe are integral, and guarantee, in welding process, rosin joint and sealing-off to be arranged.
6, for ease of the machining of later process, chuck after welded in step 5 is heat-treated: chuck is heated and is incubated 1～2 hour under 750～770 degree, stove is as cold as 550～580 and spends the air cooling of coming out of the stove, and realizes annealing, guarantees that the hardness of chuck is not more than 197～200HB.
7, check: check that whether chuck is cracked, sealing-off, check carbide alloy sleeve pipe amesiality phenomenon whether obviously in chuck, the satisfactory next process that enters simultaneously.
8, Milling Process:
1), according to the head at chuck as shown in Figure 4, mill out three grooves, obtain along circumferential equally distributed three pawl lobe 12 structures, the degree of depth of groove is 0.5～1 millimeter apart from weld layer 3;
2), press the location stern notch 16 of the chuck of milling shown in Fig. 3, location stern notch 16 can prevent that in clamping process, chuck rotates.
9, check: check whether the chuck size after milling meets drawing requirement, and whether equal portions are even for pawl lobe 12 structures, the satisfactory next process that enters.
10, heat treatment: guarantee that chuck has certain hardness, elasticity and rigidity.
1), integral body HRc50～55 of hardening, after being heated to 400～500 ℃, preheating 30～60min, then be heated to 780～800 ℃, be incubated 1 hour, then cooling in salt solution; After heat treatment heating, cooling before, the threaded portion of chuck is coated to boric acid, carry out coolingly, can prevent the oxidation peeling of chuck threaded portion;
2), be heated to 300～320 ℃, be incubated 1 hour, cool to room temperature in air then, hardness reaches 50～55HRC; Lonneal can guarantee that the chuck material structure is even, and grain refinement reduces distortion and the stress of chuck and concentrates;
3), boil chuck 10～15 minutes with the hot water of 100 degree, the boric acid of removing chuck threaded portion.
11, grind the endoporus 11 of chuck, make these endoporus 11 roughness between Ra0.2～Ra0.4, as the benchmark of chuck following process.
12, grinding:
1), the cylindrical 13 of clamped one time grinding chuck and male cone (strobilus masculinus) 14;
2), the notch recess of three pawl lobes 12 polishes along the conical surface 14, prevent that the chuck conical surface 14 is jagged and produce the assembling and positioning errors with chuck clamping body 5;
3) during grinding, should add saponification liquor, burn in grinding process to prevent chuck.
13, check:
1), check whether the chuck size after step 12 grinding meets drawing requirement;
2), check whether roughness meets the requirements.
14, on electric boring grinding machine, chuck endoporus 11 is carried out to the processing of electric boring mill:
1), the calibration chuck, the taper hole concentricity of its clamping chuck is not more than 0.005 millimeter, controls back taper 22;
2), electric boring mill roughness is Ra3.2;
3), check the chuck precision before work.
15, boil chuck 1～2 hour with the hot water of 100 degree, qualitative and eliminate stress.
16, with the line cutting, carbide alloy sleeve pipe 2 is cut into to the substrate 22 corresponding with the head pawl lobe 12 of chuck stock, is about to carbide alloy sleeve pipe 2 and is divided into along circumferential equally distributed three equal parts, referring to Fig. 4.
17, typing: after the 11 use plug supports of the endoporus of chuck are large, heat more than 200～230 degree, be incubated more than 10～12 hours, guarantee that thus the endoporus 11 of chuck is greater than the diameter of workpiece 4, and make chuck there is elasticity.
18, grind: grind the endoporus 11 of chuck to given size, surface roughness is less than Ra0.2, simultaneously, controls the horn mouth shape of endoporus 11, allows small back taper 22, and the diameter of endoporus 11 is large from little change backward from the position near lathe tool, referring to Fig. 5; But allow anything but along cone, from the position near lathe tool backward from large to small, when the endoporus 11 of chuck is along cone, workpiece 4, under the effect of lathe tool, can produce larger distortion to the diameter of endoporus 11, can't guarantee the machining accuracy of workpiece 4.
19, comprehensive test:
1), the concentricity of check chuck.
2), the roughness of check chuck.
3), the hole tapering of check chuck.
4), whether three lobes of check chuck evenly flick.
5), check each several part size etc.
As shown in Figure 6, chuck use state diagram for the present embodiment, workpiece 4 is arranged in chuck endoporus 11, the afterbody of chuck is fixedly connected with chuck clamping body 5, and the front end of chuck clamping body 5 is provided with lathe tool 6, and the afterbody of chuck clamping body 5 is provided with the main spindle box 7 that can drive workpiece 4 rotations, during work, workpiece 4 rotates under the drive of main spindle box 7, and the front end of workpiece 4 supports clamping by the endoporus 11 of chuck, and workpiece 4 rotates with respect to the endoporus 11 of chuck.
The present embodiment improves the processing technology of existing chuck, add the welding procedure of carbide alloy sleeve pipe 2 in the process of common chuck, thereby strengthened the hardness of 11 of chuck endoporus, reduced fragility, improve the wearability of chuck, extended the chuck life-span; And, by repeatedly check and heat treatment, and the processing step such as grinding, improved concentricity and the roughness of chuck, not only guaranteed the uniformity of chuck material in process, effectively prevent the distortion of chuck, but also be the chuck after processing has elasticity, and a whole set of technical process is simple, easily implement, processing cost is low, and the chuck quality is high, and the precision of workpiece to be machined 4 and quality also have better assurance.
Claims (4)
1. a chuck, include the chuck body, this chuck body offers endoporus vertically, it is characterized in that: described endoporus also fixedly is embedded with the carbide alloy sleeve pipe at the front end that is positioned at described chuck body, and this carbide alloy sleeve pipe has and can rotate the pore worn for workpiece.
2. chuck according to claim 1, it is characterized in that: described pore is back taper, and, be less than the pore diameter away from lathe tool one end near the pore diameter of lathe tool one end.
3. chuck according to claim 1, it is characterized in that: described chuck body forms a plurality of pawl lobes that can open or draw at the front end of described endoporus, correspondingly, described carbide alloy sleeve pipe is partitioned into a plurality of carbide alloy substrates of connection corresponding to each described pawl lobe.
4. chuck according to claim 1, it is characterized in that: the afterbody of described chuck body has external screw thread, and this chuck body is offering the location stern notch by caudal periphery wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220726442 CN202952098U (en) | 2012-12-25 | 2012-12-25 | Chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220726442 CN202952098U (en) | 2012-12-25 | 2012-12-25 | Chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202952098U true CN202952098U (en) | 2013-05-29 |
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ID=48457693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220726442 Expired - Fee Related CN202952098U (en) | 2012-12-25 | 2012-12-25 | Chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202952098U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072029A (en) * | 2012-12-25 | 2013-05-01 | 浙江工商职业技术学院 | Clamp head and processing process of clamp head |
| CN107570774A (en) * | 2017-08-28 | 2018-01-12 | 朱炳和 | A kind of shank endoporus milling cutter handle of boring machine easy to wear |
-
2012
- 2012-12-25 CN CN 201220726442 patent/CN202952098U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072029A (en) * | 2012-12-25 | 2013-05-01 | 浙江工商职业技术学院 | Clamp head and processing process of clamp head |
| CN103072029B (en) * | 2012-12-25 | 2015-01-07 | 浙江工商职业技术学院 | Processing process of clamp head |
| CN107570774A (en) * | 2017-08-28 | 2018-01-12 | 朱炳和 | A kind of shank endoporus milling cutter handle of boring machine easy to wear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131225 |