CN202780552U - Positioning and clamping device for turning machining of flange bolts - Google Patents
Positioning and clamping device for turning machining of flange bolts Download PDFInfo
- Publication number
- CN202780552U CN202780552U CN 201220404529 CN201220404529U CN202780552U CN 202780552 U CN202780552 U CN 202780552U CN 201220404529 CN201220404529 CN 201220404529 CN 201220404529 U CN201220404529 U CN 201220404529U CN 202780552 U CN202780552 U CN 202780552U
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- Prior art keywords
- clamping device
- bolt
- chuck
- tailstock
- flange
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Abstract
The utility model provides a positioning and clamping device for turning machining of flange bolts, and aims at overcoming the defect that in the prior art, when a bolt rod of a flange thin long bolt is machined, the head portion of the bolt is prone to damage. The positioning and clamping device comprises a positioning unit and a clamping unit, wherein the clamping unit comprises a chuck and inner polygonal sleeve pieces,wherein one inner polygonal sleeve piece is fixedly arranged on each chuck claw, an inner chamfer is arranged at the free end of the each inner polygonal sleeve piece, and when the chuck closes up, the inner chamfers are matched with flange surfaces of a flange bolt. By means of the positioning and clamping device for the turning machining of the flange bolts, the clamping unit is provided with inner surfaces which are matched with the head portion of the flange bolt in shape and size, the clamping unit is also provided with the inner chamfers matched with the flange surfaces of the flange bolt, and therefore the contact area is enlarged in the clamping process, and edge planes of the polygonal flange bolt is not prone to damage.
Description
Technical field
The utility model relates to location, the clamping device that a kind of bolt turning machining is used, and particularly relates to location, clamping device that the turning machining of the shank of bolt of the elongated flange bolt that is provided with gain is used.
Background technology
When the shank of bolt of the elongated hex bolts of turning small dimension ring flange and the gain of bolt shank, usually adopt gripper chuck to fasten the bolt head hexagonal, bolt head is carried out clamping and positioning.But because small dimension ring flange slender bolt, particularly the length-to-diameter of shank of bolt greater than 20, with head flange dish slender bolt gain, extra small, the size of its head hexagonal is too little, and processing gain chipping allowance is larger, cutting force is relatively large, and be provided with annular groove on the chuck clamping area of lathe, so that the contact-making surface of chuck jaw and bolt head is less, so the bolt head surface was crushed easily when shank of bolt and gain carried out turning.Have, because processing gain chipping allowance is larger, cutting force is relatively large, produces a large amount of heat in metal cuttings again, can produce strain when expanding with heat and contract with cold distortion and cutting during the turning shank of bolt.In the prior art, shank of bolt strain when expanding with heat and contract with cold distortion and cutting adopts live center to be set in tail stock and to adopt the servicing units such as follow-rest, centre frame that shank of bolt is carried out aiding support usually when preventing the turning shank of bolt.At this, live center is mainly used to solve the orientation problem that causes elongate screw because expanding with heat and contract with cold.And the purpose that adopts follow-rest, centre frame is in order to prevent the elongate threaded screw middle part because poor rigidity causes strain because of cutting force, so that the screw rod after machining becomes dolioform in turning process.But, when carrying out turning with live center puller bolt bar end, phenomenon is obvious because the slender bolt bar expands with heat and contract with cold, shank of bolt can be elongated because being heated in turning process, but shank of bolt axial length in turning process is fixed by top and scroll chuck, so shank of bolt is crooked in the process of shank of bolt, the part after machining becomes dolioform, can not satisfy dimension precision requirement.
The utility model content
The purpose of this utility model is, when processing the shank of bolt of ring flange slender bolt for prior art, the deficiency that bolt head is easily crushed, the location, the clamping device that provide a kind of flange bolt turning machining that can avoid in clamping process, crushing bolt head to use.
Location, clamping device that bolt turning machining is used.
The purpose of this utility model is achieved through the following technical solutions:
Location, clamping device that flange bolt turning machining is used, described location, clamping device comprise positioner and clamping device, described clamping device comprises chuck and is fixedly installed on interior polygonal sleeve lobe on each chuck jaw, free end at described interior polygonal sleeve lobe is provided with interior chamfering, when described chuck closed up, the flange degree face of described interior chamfering and described flange bolt was complementary;
When described chuck jaw closed up, described interior polygonal sleeve lobe formed complete interior polygonal sleeve, and described interior polygonal sleeve is coaxial with described chuck;
Described interior polygonal sleeve lobe by described interior polygonal sleeve vertically five equilibrium make, the isodisperse of described interior polygonal sleeve is the integral multiple of described chuck jaw;
Described chuck is scroll chuck or chuck or six dog chucks;
Described interior polygonal sleeve lobe is fixedly connected with the inner circumferential surface of described chuck jaw by its excircle;
Be provided with the shaft shoulder on the free-ended excircle of described interior polygonal sleeve, be connected by the end face of the described shaft shoulder and the end face of described chuck;
Described positioner comprises the tail stock that is provided with the tailstock hole, with the tailstock lining that is arranged in the described tailstock hole, described tailstock lining is coaxial with described tailstock hole, the lining endoporus of described tailstock lining is through hole, described interior polygonal sleeve lobe, interior chamfering and chuck all with the coaxial setting of described tailstock lining;
Described tailstock hole is taper hole, is complementary with described tailstock hole, and described tailstock lining is provided with external conical surface;
Described tailstock lining is taper type;
Described tailstock lining is provided with the shaft shoulder.
The further purpose of the utility model is, a kind of method for turning of flange bolt is provided, adopt one of said apparatus described location, clamping device, the bar section diameter of the diameter of bore of described tailstock lining and described bolt is complementary, the ring flange degree face of described interior chamfering and described flange bolt is complementary, the outer surface of the polygonal head of the inner surface of described interior polygonal sleeve and described flange bolt is complementary, clamping locating flange bolt as follows: with the degree face of interior chamfering as positioning datum, the degree face of ring flange degree face and described interior chamfering is adjacent to, the locating flange bolt; The polygonal head of flange bolt is arranged in the interior polygonal sleeve, with the polygonal head of interior polygonal sleeve clamping flange bolt, the locking chuck; The tailstock lining is set in the tail stock hole, mobile tail stock, the free end of shank of bolt is extend in the endoporus of described tailstock lining, and the free end of described shank of bolt is connected with the endoporus matched in clearance of described tailstock lining, and the locking tail stock carries out turning processing.
Because clamping tool of the present utility model is provided with the inner surface that is complementary with flange bolt nose shape and size, with the interior chamfering that is complementary with ring flange degree face, chamfering is as the processing positioning datum in adopting during the clamping bolt, when clamping tool positions with flange bolt is polygonal, the polygonal faceted pebble of polygonal flange plate bolt and ring flange degree face are respectively with the inner surface of interior polygonal tire with interior chamfering is corresponding is complementary, so the contact area when having strengthened clamping, the faceted pebble of polygonal flange plate bolt are difficult for being crushed;
Adopt method processing flange bolt of the present utility model, chamfering is as the positioning datum of bolt head in adopting, one side chamfer angle face has increased the contact area with ring flange degree face, clamping compares calibration, the degree face of ring flange does not need supplementary processing on the other hand, and contrast locating is more accurate, and clamping bolt and tail stock, chuck axiality are good like this, accurate positioning can well guarantee turning accuracy.
Description of drawings
Fig. 1 is flange bolt example structure schematic diagram;
Fig. 2 is the duty embodiment schematic diagram with the utility model location, clamping device clamping, locating flange bolt;
Fig. 3, Fig. 8 are sleeve example structure schematic diagrames;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is three-jaw shape schematic diagram after the welding;
Fig. 6 is three-jaw right view after the welding;
Fig. 7 the utility model clamping tool example structure schematic diagram;
Fig. 9, Figure 10, Figure 11 are the utility model tailstock lining example structure schematic diagram.
Description of reference numerals
Chamfering 10-lining shaft shoulder 11-gain 12-shaft shoulder 13-tailstock hole 14-lining endoporus in the Hexagonal jacket 3-tailstock lining 4-tailstock 6-turret head 7-ring flange 8-ring flange degree face 9-in the 1-scroll chuck 2-
The specific embodiment
Extra small the hexagonal flange slender bolt that gain 11 is arranged take processing sets up below in conjunction with accompanying drawing be as example, the utility model done further described.
Shown in Fig. 1-11, positioner of the present utility model is comprised of the tailstock lining 3 that is arranged on tail stock 4 and be arranged in the tailstock hole 13, and the inner surface in the external peripheral surface of tailstock lining 3 and tail stock hole 13 is complementary.The lining endoporus 14 of tailstock lining 3 is preferably clear opening, and with the equal diameters of the shank of bolt of processing, when shank of bolt was inserted in the lining endoporus 14, shank of bolt was connected with the lining endoporus and is that matched in clearance connects.Tailstock hole 13 can be straight hole, can be taper hole also, is complementary with it, and the surface of matching with tailstock hole 13 of tailstock lining 3 is frustum type or column type.For ease of the dismounting of tailstock lining 3, the relative end in the insertion tailstock hole of tailstock lining 3 is provided with the lining shaft shoulder 10.
Clamping tool of the present utility model is to have increased an interior Hexagonal jacket 2 on the basis of existing scroll chuck 1, the inner surface of Hexagonal jacket 2 and the outer surface of turret head are complementary in being somebody's turn to do, should be divided into vertically three interior Hexagonal jacket lobes of three parts of formation by interior Hexagonal jacket 2, an end of Hexagonal jacket lobe is fixedly connected with a chuck jaw of scroll chuck respectively in each.Free end at interior Hexagonal jacket 2 is provided with the interior chamfering 9 that is complementary with ring flange degree face 8.
Adopt following method to make the anchor clamps that originally are installed: three chuck jaws of scroll chuck 1 are closed up, with interior Hexagonal jacket 2 coaxial being arranged in the scroll chuck 1, and interior Hexagonal jacket 2 is welded on the chuck jaw of scroll chuck 1, then vertically interior Hexagonal jacket 2 is cut into three lobes, make on each chuck jaw of scroll chuck 1 and be fixedly installed an interior Hexagonal jacket lobe, obtain clamping tool of the present utility model.First interior Hexagonal jacket 2 being welded on the reason of carrying out again the five equilibrium cutting on the chuck jaw of scroll chuck 1 is, like this can centering the chuck jaw center, thereby Hexagonal jacket 2 is coaxial with scroll chuck 1 and lathe spindle in guaranteeing, simultaneously coaxial with the tailstock taper hole, could protect so higher product turning accuracy.During welding, preferably the external peripheral surface of interior Hexagonal jacket 2 is fixedly connected with the inner surface of scroll chuck 1.As shown in Figure 8, interior Hexagonal jacket can be straight tube shape, and sleeve is placed on the scroll chuck easily in order to weld, and can the shaft shoulder 12 be set at straight-cylindrical sleeve, obtains interior Hexagonal jacket 2 as shown in Figure 3.
Carry out turning and add man-hour, first turret head 6 is contained in the interior Hexagonal jacket 2, the ring flange degree face 8 of ring flange 7 and the degree face of interior chamfering 9 are adjacent to, then the degree face of interior chamfering 9 uses the turret head 6 of interior Hexagonal jacket 2 fishbolts as the positioning datum of processing, and tailstock lining 3 is packed in the tail stock hole 13, move forward tail stock 4 to suitable position, the afterbody of shank of bolt is inserted in the tailstock hole 13, and locking tail stock 4 starts lathe and carries out machining.The length that shank of bolt inserts in the tailstock hole 13 is long as much as possible, as long as cutter does not occur to intervene with tailstock lining 3 in the time of guaranteeing turning gain 11, because it is shorter to stay the length of shank of bolt of 13 outsides, tailstock hole, the rigidity of shank of bolt is better, more be not easy bending during turning, can guarantee well the gain size.Can adopt segmentation that shank of bolt is processed according to the concrete condition of L/D ratio of when cutting shank of bolt, the position of namely adjusting at any time tailstock according to the needs of Working position processes shank of bolt.Tailstock hole 13 also can be taper hole or stepped hole, when tailstock hole 13 is taper hole or stepped hole, be positioned at the diameter minimum in the tailstock hole of shank of bolt insertion end, like this, can not stop that in the process of turning bolt shank of bolt is because being subjected to thermal stretching, shank of bolt is at axial non-resistance, so it is crooked to adopt this positioner can prevent from cutting in the process of bolt shank bolt shank, obtains the high shank of bolt of linear precision.
When adopting above-mentioned location, clamping device and method location, clamping flange bolt, because the inner surface of interior Hexagonal jacket 2 and the outer surface of turret head 6 are complementary, so increased the contact area of clamping workpiece clamping, turret head is difficult for being crushed; Ring flange degree face 8 is complementary with the degree face of interior chamfering 9, and the degree face of interior chamfering 9 is as the positioning datum that adds man-hour, and ring flange degree face 8 is fitted closely with the degree face of interior chamfering 9, can obtain high machining accuracy.Owing to adopt the tailstock lining as the positioner of shank of bolt afterbody in the utility model method, tailstock lining 3 has limited the circular runout of shank of bolt, but axially do not hold out against, bolt shank is subject to the bending that axial resistance causes because of the heat expansion elongation in the time of can eliminating cutting, and can play to shank of bolt the effect of radial support location, so the shank of bolt linearity that turning processing obtains is good, dimensional accuracy is high, and tolerance is easy to control.So when adopting location of the present utility model and clamping device and method positioning and clamping flange bolt, can not only avoid bolt head to be crushed, and because clamping, positioner are coaxial, so can obtain the high bolt shank of accuracy class.
Different according to the shape of bolt head, interior Hexagonal jacket can be interior four jiaos of sleeves of being complementary with bolt head, interior 12 jiaos and special-shaped sleeve etc.Scroll chuck can be chuck, six dog chucks, 12 dog chucks etc.
For simplified structure, or economical with materials, also interior Hexagonal jacket can be divided into more lobe, select a part wherein to be connected with chuck jaw as interior Hexagonal jacket lobe, like this, when chuck jaw closed up, what obtain was the part of sleeve.
Claims (10)
1. location, the clamping device used of flange bolt turning machining, described location, clamping device comprise positioner and clamping device, it is characterized in that, described clamping device comprises chuck and is fixedly installed on interior polygonal sleeve lobe on each chuck jaw, free end at described interior polygonal sleeve lobe is provided with interior chamfering (9), when described chuck closed up, described interior chamfering (9) was complementary with the flange degree face of described flange bolt.
2. location, the clamping device used of flange bolt turning machining as claimed in claim 1, it is characterized in that, when described chuck jaw closed up, described interior polygonal sleeve lobe formed complete interior polygonal sleeve, and described interior polygonal sleeve is coaxial with described chuck.
3. location, the clamping device used of flange bolt turning machining as claimed in claim 1, it is characterized in that, described interior polygonal sleeve lobe by described interior polygonal sleeve vertically five equilibrium make, the isodisperse of described interior polygonal sleeve is the integral multiple of described chuck jaw.
4. location, the clamping device used such as each described flange bolt turning machining of claim 1-3 is characterized in that described chuck is scroll chuck or chuck or six dog chucks.
5. location, the clamping device used of flange bolt turning machining as claimed in claim 1 is characterized in that described interior polygonal sleeve lobe is fixedly connected with the inner circumferential surface of described chuck jaw by its excircle.
6. location, the clamping device used of flange bolt turning machining as claimed in claim 2 is characterized in that, is provided with the shaft shoulder on the free-ended excircle of described interior polygonal sleeve, is connected by the end face of the described shaft shoulder and the end face of described chuck.
7. location, the clamping device used such as each described flange bolt turning machining of claim 1-6, it is characterized in that, described positioner comprises the tail stock that is provided with the tailstock hole, with the tailstock lining that is arranged in the described tailstock hole, described tailstock lining is coaxial with described tailstock hole, the lining endoporus of described tailstock lining is through hole, described interior polygonal sleeve lobe, interior chamfering (9) and chuck all with the coaxial setting of described tailstock lining.
8. location, the clamping device used of flange bolt turning machining as claimed in claim 7 is characterized in that described tailstock hole is taper hole, is complementary with described tailstock hole, and described tailstock lining is provided with external conical surface.
9. location, the clamping device used of flange bolt turning machining as claimed in claim 7 is characterized in that described tailstock lining is taper type.
10. location, the clamping device used of flange bolt turning machining as claimed in claim 7 is characterized in that described tailstock lining is provided with the shaft shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220404529 CN202780552U (en) | 2012-08-15 | 2012-08-15 | Positioning and clamping device for turning machining of flange bolts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220404529 CN202780552U (en) | 2012-08-15 | 2012-08-15 | Positioning and clamping device for turning machining of flange bolts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202780552U true CN202780552U (en) | 2013-03-13 |
Family
ID=47807891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220404529 Expired - Fee Related CN202780552U (en) | 2012-08-15 | 2012-08-15 | Positioning and clamping device for turning machining of flange bolts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202780552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773737A (en) * | 2012-08-15 | 2012-11-14 | 浙江中航来宝精工科技有限公司 | Turning machining method of flange bolt as well as positioning and clamping device for same |
-
2012
- 2012-08-15 CN CN 201220404529 patent/CN202780552U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773737A (en) * | 2012-08-15 | 2012-11-14 | 浙江中航来宝精工科技有限公司 | Turning machining method of flange bolt as well as positioning and clamping device for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20190815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |