CN111571275B - Clamping device - Google Patents
Clamping device Download PDFInfo
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- CN111571275B CN111571275B CN202010592178.5A CN202010592178A CN111571275B CN 111571275 B CN111571275 B CN 111571275B CN 202010592178 A CN202010592178 A CN 202010592178A CN 111571275 B CN111571275 B CN 111571275B
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 230000003287 optical effect Effects 0.000 claims description 37
- 230000007704 transition Effects 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
A clamping device for clamping a workpiece assembled inside a deep hole housing, the clamping device comprising: a main shaft having a first end and a second end, the second end being configured to be disposed within a hole of a workpiece and to pass through the workpiece; the locking and positioning mechanism comprises an end plug, a pressing disc, an expansion sleeve, a positioning flange and a supporting pin; the end plug is connected with the first end through a first fastener, is matched with the end part of the deep hole shell, and the compression disc, the expansion sleeve and the positioning flange are arranged on the outer peripheral surface of the second end; the pressing disc is connected with the outer peripheral surface of the second end through a second fastening piece; a positioning end of the positioning flange is matched with a positioning surface of the workpiece; a first adjusting mechanism arranged on the outer peripheral surface of the first end and matched with the end plug; and the second adjusting mechanism is arranged on the peripheral surface of the second end and matched with the free end of the positioning flange.
Description
Technical Field
The invention relates to the technical field of manufacturing of control rod driving mechanisms of nuclear power equipment, in particular to a clamping device.
Background
In the prior art, the radial fit effect of the spring expansion sleeve on the surface of the uniform inner hole of the workpiece is good, the deformation factor of the material is considered, the radial displacement is often limited and not too large, the surface of the non-uniform inner hole of the workpiece is required to be profiled according to the shape of the surface of the tooth form, when the tooth form tends to be complex, the distance between the high and low surfaces is large, the profiling difficulty of the spring expansion sleeve is large, the problem that the workpiece is damaged due to uneven stress, inaccurate positioning, too large local stress and the like can be caused by the combination condition of the contact surfaces under the condition that the precision is not up to the standard, and the spring expansion sleeve is difficult to be suitable for locking and reliable radial and axial positioning of the non-uniform inner hole of the workpiece at the position of a large deep hole.
Therefore, in order to solve the problem of accurate positioning and processing when deep hole clamping is performed on a part with a regular or irregular tooth shape in an inner hole, a new clamping device needs to be provided.
Disclosure of Invention
The invention aims to solve the problems and provide a clamping device for clamping a workpiece and a deep hole shell, wherein the clamping device is matched with the workpiece and the deep hole shell respectively by utilizing a main shaft, a locking and positioning mechanism, a first adjusting mechanism and a second adjusting mechanism, so as to realize clamping and positioning between the workpiece and the deep hole shell. In order to achieve the above purpose, the present invention adopts the following technical scheme.
A clamping device for clamping a workpiece assembled within a deep hole housing, the clamping device comprising: a spindle having a first end and a second end, the second end being configured to be disposed within a bore of a workpiece and to pass through the workpiece;
The locking and positioning mechanism comprises an end plug, a pressing disc, an expansion sleeve, a positioning flange and a supporting pin; the inner peripheral surface of the end plug is connected with the outer peripheral surface of the first end through a first fastener, the outer peripheral surface of the end plug is matched with the end part of the deep hole shell, and the pressing disc, the expansion sleeve and the positioning flange are sequentially arranged on the outer peripheral surface of the second end; and, an inner peripheral surface of an extended end of the pressing plate is connected to an outer peripheral surface of the second end by a second fastener; a positioning end of the positioning flange is matched with a positioning surface of the workpiece; and, the support pin is radially disposed between an inner surface of the hole of the work piece and an outer peripheral surface of the expansion shell;
a first adjusting mechanism arranged on the outer peripheral surface of the first end of the main shaft, and the first adjusting mechanism is matched with the end plug; and
The second adjusting mechanism is arranged on the outer peripheral surface of the second end of the main shaft and is matched with a free end of the positioning flange.
Further, the main shaft is a stepped shaft structural member, the main shaft comprises a first threaded shaft, an optical axis, an inclined plane optical axis, a transition shaft and a second threaded shaft which are sequentially arranged, wherein the first adjusting mechanism is in fastening fit with the first threaded shaft, the inner peripheral surface of the end plug is in fastening connection with one end of the optical axis, the inner peripheral surface of the pressing disc is in fastening connection with the other end of the optical axis, the inner peripheral surface of the expansion sleeve is in contact fit with the outer peripheral surface of the inclined plane optical axis, and the second adjusting mechanism is in fastening fit with the second threaded shaft.
Further, the expansion sleeve is an integral elastic structural member, the expansion sleeve is a taper plug, the expansion sleeve comprises an inner hole, a conical side wall and a boss, the inner hole is axially arranged, the boss is radially arranged, the outer diameter of the boss is larger than the maximum outer diameter of the conical side wall, and the inner hole is in contact fit with the inclined plane optical axis.
Further, the inner surface of the supporting pin is in contact fit with the conical outer surface of the expansion sleeve and the boss, the outer surface of the supporting pin is in clearance fit with the inner surface of the hole of the workpiece, the maximum inner diameter size of the supporting pin is smaller than the minimum inner diameter size of the hole of the workpiece, and the axial length of the supporting pin is equal to the axial length of the conical side wall.
Further, the inner peripheral surface of the free end of the positioning flange comprises a step and a second step hole, and the end face of the positioning end of the positioning flange is provided with a positioning inclined surface which is used for being in contact fit with the positioning surface of the workpiece.
Further, the locking and positioning mechanism further comprises at least one connecting piece, wherein the connecting piece is used for sequentially connecting the compression end of the compression disc, the supporting pin and the positioning end of the positioning flange in a fastening connection mode; wherein the connector comprises a bolt and a washer.
Further, the first adjusting mechanism comprises a first gasket and a first nut, the first nut is arranged on one side of the end plug, which is away from the deep hole shell, the first gasket is arranged between the first nut and the end plug, and the first nut is in threaded connection with the first threaded shaft.
Further, the first fastener and the second fastener each comprise a key and a countersunk head screw, the keys are fixedly connected with the optical axis through the countersunk head screws, and the keys are partially protruded out of the outer surface of the optical axis.
Further, the second adjusting mechanism comprises a second gasket and a second nut, the second gasket is matched with the step end face of the positioning flange and the inner surface of the second step hole, the second nut is arranged on one side, deviating from the step, of the second gasket, and the second nut is in threaded connection with the second threaded shaft.
Further, the clamping device further comprises a locking rod, the locking rod is provided with a working end, the outer peripheral surface of the working end is in contact fit with the inner surface of the second step hole of the positioning flange, and the inner peripheral surface of the working end is in contact fit with the outer peripheral surface of the second nut of the second adjusting mechanism.
The clamping device has the positive effects that:
(1) The problem that accurate positioning and machining are needed when holes of workpieces or parts are regular or irregular tooth-shaped parts are assembled in deep holes is solved, the functions of reliable loading, clamping, axial movement, radial locking and the like of the workpieces or the parts can be achieved, product assembling and machining precision is guaranteed, operation convenience is greatly improved, and efficiency is improved.
(2) In the process of matching operation of the workpiece and the deep hole shell, the rapid and reliable positioning and clamping can be realized, the rigidity of the workpiece can be effectively improved, the workpiece is prevented from being deformed, the tooth surface contact part of the hole of the workpiece and the supporting pin are in radial floating support, and due to the adoption of split and stress groove designs, the large radial adjustment quantity simultaneously allows the flexible material with high toughness and low hardness to be selected in a targeted manner, the workpiece can be protected from being damaged, and the problems of too small radial displacement quantity, uneven stress on the supporting surface, too large local stress, difficult manufacturing precision control and the like of the spring expansion sleeve in the prior art are effectively solved.
(3) The clamping device can provide references for assembly and positioning of similar or similar parts, can ensure the quality of products, improves the manufacturing efficiency, and has higher social and economic benefits.
Drawings
FIG. 1 is a schematic diagram of the assembly of a clamping device, a workpiece and a deep hole shell of the present invention;
FIG. 2 is a schematic structural view of the clamping device of the present invention;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a schematic view of the structure of the workpiece and the deep hole casing shown in FIG. 1;
fig. 6 is a schematic diagram of the main components of the clamping device of the present invention.
The reference numerals in the figures are respectively:
100. A workpiece; 200. A deep hole housing;
110. a hole; 120. A first end face;
130. a positioning surface; 140. A sidewall;
150. a positioning groove; 160. A stress groove;
170. tooth-shaped surfaces; 210. Deep holes;
220. A housing; 230. Positioning holes;
300. a set screw; 310. A positioning pin;
1.a main shaft; 11. A first end;
12. a second end; 13. An optical axis;
14. Inclined plane optical axis; 15. A transition shaft;
2. A locking and positioning mechanism; 20. An end plug;
21. A pressing plate; 211. A compacting end;
212. An extension end; 22. Expanding sleeve;
221. A tapered sidewall; 222. boss
223. A tapered bore; 23. A support pin;
24. positioning a flange; 241. A positioning end;
2410. Positioning an inclined plane; 242. A free end;
243. a first stepped hole; 244. A second stepped hole;
25. A connecting piece; 26. A second fastener;
30. A first fastener; 3. A first adjustment mechanism;
32. A first gasket; 33. A first nut;
4. A second adjustment mechanism; 41. A second nut;
42. a second gasket; 5. A locking lever;
51. a working end; 52. A handle;
521. A long hole.
Detailed Description
Specific embodiments of the clamping device of the present invention are described below with reference to the drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.
Referring to fig. 1, the clamping device of the present invention is suitable for clamping a workpiece 100 assembled in a deep hole housing 200. In this embodiment, the clamping device includes a spindle 1, a locking and positioning mechanism 2, a first adjusting mechanism 3, a second adjusting mechanism 4, and a locking lever 5.
Referring to fig. 2,4 and 5, fig. 1 is continued, wherein fig. 1 is a further sectional view of fig. 4 in the direction B. In this embodiment, as shown in fig. 5, the workpiece 100 is suitable for a ring gear regular part or a ring gear irregular part, the workpiece 100 has a hole 110, a first opposite end surface 120 and a positioning surface 130, wherein a 45 ° inclined plane is formed between the hole 110 of the workpiece 100 and an end portion of a side wall 140 of the workpiece 100, the 45 ° inclined plane is defined as the positioning surface 130, the hole 110 vertically penetrates the first end surface 120, an angle formed between the positioning surface 130 and the hole 110 is 45 °, the workpiece 100 is accommodated in a deep hole 210 of the deep hole housing 200 and has a certain depth in the deep hole 210, and an outer peripheral surface of the side wall 140 of the workpiece 100 is disposed opposite to an inner peripheral surface of a housing 220 of the deep hole housing 200. In addition, the workpiece 100 further includes a plurality of stress grooves 160 and a plurality of tooth surfaces 170 uniformly circumferentially disposed around the hole 110, at least one positioning groove 150 is disposed on the sidewall 140 of the workpiece 100, at least one positioning hole 230 is disposed on the housing 220 of the deep hole housing 200, and the positioning groove 150 is configured to match the positioning hole 230. When the clamping device is used for clamping the workpiece 100 and the deep hole shell 200, the positioning groove 150 is used as a first reference hole, the positioning hole 230 is used as a second reference hole, and when the positioning groove 150 is matched with the positioning hole 230, the positioning hole 230 and the positioning groove 150 are sequentially penetrated through by a positioning screw 300 and a positioning pin 310 to be connected.
Referring to fig. 1, the spindle 1 is a solid long stepped shaft structure, the spindle 1 includes a first end 11 and a second end 12, the second end 12 is configured to be disposed in a hole 110 of a workpiece 100 and pass through the workpiece 100, the spindle 1 penetrates through the hole 110 of the workpiece 100, the first end 11 of the spindle 1 penetrates through a deep hole 210 of the deep hole housing 200, and the second end 12 of the spindle 1 is accommodated in the deep hole 210, where the deep hole 210 is a multi-step inner hole penetrating through two ends of the deep hole housing 200.
With continued reference to fig. 1 and fig. 6, the locking and positioning mechanism 2 is disposed between the spindle 1, the workpiece 100 and the deep hole casing 200, and the locking and positioning mechanism 2 includes an end plug 20, a pressing disc 21, an expansion sleeve 22, a positioning flange 24, a supporting pin 23, a first fastening member 30, a second fastening member 26, and a connecting member 25. Wherein the end plug 20 is disposed on the outer peripheral surface of the first end 11 of the spindle 1, the pressing disc 21, the expansion sleeve 22, and the positioning flange 24 are disposed on the outer peripheral surface of the second end 12 of the spindle 1 in sequence, and the support pin 23 is disposed radially between the inner surface of the hole 110 of the workpiece 100 and the outer peripheral surface of the expansion sleeve 22; and, the inner peripheral surface of the end plug 20 is coupled to the outer peripheral surface of the first end 11 of the spindle 1 by the first fastener 30, and the outer peripheral surface of the end plug 20 is fitted to the end of the deep hole housing 200; an inner peripheral surface of an extension end 212 of the pressing plate 21 is coupled to an outer peripheral surface of the second end 12 of the main shaft 1 by a second fastening member 26, a pressing end 211 of the pressing plate 21 is coupled to a positioning end 241 of the positioning flange 24 and the pressing end 211 is coupled to the positioning end 241 by the coupling member 25, and the positioning end 241 of the positioning flange 24 has a positioning inclined surface 2410, the positioning inclined surface 2410 is a 45 ° inclined surface, and the positioning inclined surface 2410 is coupled to the positioning surface 130 of the workpiece 100.
With continued reference to fig. 1, the spindle 1 includes a first threaded shaft, an optical axis 13, an inclined plane optical axis 14, a transition shaft 15, and a second threaded shaft that are sequentially connected; the first threaded shaft is arranged on the first end 11, the second threaded shaft is arranged on the second end 12, and the outer peripheral surfaces of the first threaded shaft and the second threaded shaft are respectively provided with a threaded surface. As shown in fig. 1, the first adjusting mechanism 3 is in threaded fit with the threaded surface of the first threaded shaft, the second adjusting mechanism 4 is in threaded fit with the threaded surface of the second threaded shaft, the inner circumferential surface of the end plug 20 is fixedly connected with one end of the optical axis 13 corresponding to the first end 11, the inner circumferential surface of the pressing disc 21 is fixedly connected with one end of the optical axis 13 corresponding to the second end 12, the inner circumferential surface of the expansion sleeve 22 is in contact fit with the outer circumferential surface of the inclined plane optical axis 14, the positioning flange 24 is arranged at the position opposite to the transition shaft 15, and the second end 12 of the main shaft 1 is positioned inside the positioning flange 24. When the work 100 is assembled with the deep hole housing 200, the work 100 is disposed on the outer peripheral surfaces of the inclined plane optical axis 14 and the transition shaft 15, and the inner surface of the hole 110 of the work 100 is disposed opposite to the outer surfaces of the inclined plane optical axis 14 and the transition shaft 15.
As shown in fig. 1, the inner peripheral surface of the end plug 20 is coupled to the outer peripheral surface of the first end 11 of the spindle 1 by a first fastener 30, and the outer peripheral surface of the end plug 20 is fitted to the end inner surface of the deep hole housing 200.
As shown in fig. 1 and 2, the pressing plate 21 is disposed on the outer peripheral surface of the second end 12 of the spindle 1, the pressing end 211 of the pressing plate 21 is disposed on the side of the optical axis 13 of the spindle 1 near the inclined plane optical axis 14, the end surface of the pressing end 211 is matched with the end surface of the positioning end 241 of the positioning flange 24, and the inner peripheral surface of the extending end 212 of the pressing plate 21 is fastened to the optical axis 13 by the second fastening member 26.
In this embodiment, the first fastening member 30 and the second fastening member 26 are identical structural members, and each of them includes a key and two countersunk screws, the key is partially clamped in the optical axis, the key protrudes out of the optical axis and is disposed at a certain height, the key is detachably fastened to the optical axis, the key is mounted on the optical axis by the countersunk screws, and the countersunk screws penetrate through the thickness direction of the key and extend to a part of the optical axis. The inner peripheral surface of the end plug 20 cooperates with the key, which key of the first fastener 30 is used to clamp the end plug 20 to the first end 11 of the spindle 1. And, the inner peripheral surface of the extended end 212 of the pressing plate is engaged with the key of the second fastener 26, and the key of the first fastener 26 is used to clamp the pressing plate 21 on the second end 12 of the spindle 1.
As shown in fig. 1 and 2, the expansion sleeve 22 is disposed between the hole 110 of the workpiece 100 and the inclined optical axis 14 of the spindle 1, and an inner peripheral surface of the expansion sleeve 22 is in contact engagement with an outer peripheral surface of the inclined optical axis 14. The expansion sleeve 22 is an integral elastic structural member, the expansion sleeve 22 is a taper plug, the expansion sleeve 22 is provided with a tapered side wall 221, a boss 222, a tapered inner hole 223, and a step surface (not numbered) formed by the boss 222 and the tapered inner hole 223, the tapered inner hole 223 axially penetrates through the inside of the expansion sleeve 22, the inner circumferential surface of the tapered inner hole 223 is a tapered inclined surface, the taper of the tapered inclined surface of the tapered inner hole 223 is equal to the inclination of the inclined surface optical axis 14 of the spindle 1, the inner diameter of the tapered inner hole 223 close to the boss 222 is larger than the inner diameter of the tapered inner hole 223 close to the tapered side wall 221, the outer circumferential surfaces of the tapered side wall 221 and the boss 222 are cylindrical surfaces, and the outer diameter of the boss 222 is larger than the outer diameter of the tapered side wall 221.
In a preferred embodiment, the expansion sleeve 22 may be provided with at least one slot (not shown), which extends along the axial length direction of the expansion sleeve 22 and penetrates the tapered sidewall 221 and the boss 222.
As shown in fig. 1 and 2, the support pin 23 is disposed between the expansion sleeve 22 and the hole 110 of the workpiece 100, an inner circumferential surface of the support pin 23 is engaged with an outer circumferential surface of the tapered sidewall 221 of the expansion sleeve 22, an end surface of the support pin 23 is engaged with the stepped surface of the expansion sleeve 22, an axial length of the support pin 23 is equal to an axial length of the tapered sidewall 221, and a maximum inner diameter dimension of the support pin 23 is smaller than a minimum inner diameter dimension of the hole 110 of the workpiece 100, an outer surface of the support pin 23 is in clearance fit with an inner surface of the hole 110 of the workpiece 100, and a tooth surface contact of the hole 110 of the workpiece 100 is in radial floating support with the support pin 23.
As shown in fig. 1,2, 5 and 6, the positioning flange 24 is disposed on the outer peripheral surface of the second end 12 of the spindle 1, the positioning flange 24 includes the positioning end 241 and the free end 242, the positioning end 241 has a first stepped hole 243 disposed axially, the free end 242 has a second stepped hole 244 disposed axially, the inner diameter of the first stepped hole 243 is smaller than the inner diameter of the second stepped hole 244, a step (not numbered) is disposed between the first stepped hole 243 and the second stepped hole 244, the positioning end 241, the first stepped hole 243 are opposite to the transition shaft 15 of the spindle 1, the positioning inclined surface 2410 of the positioning end 241 is matched with the positioning surface 130 of the workpiece 100, the free end 242, the second stepped hole 244 is opposite to the second threaded shaft of the spindle 1, the second adjusting member 4 is disposed between the second stepped hole 244 of the positioning flange 24 and the second threaded shaft 4, and the second threaded shaft 244 is disposed between the second stepped hole 244 and the second threaded shaft 4 of the spindle 4.
As shown in fig. 1 and 2, the pressing plate 21, the supporting pin 23 and the positioning flange 24 are connected by the connecting piece 25, and the connecting piece 25 is used for sequentially connecting the pressing end 211 of the pressing plate 21, the supporting pin 23 and the positioning end 241 of the positioning flange 24 in a fastening connection manner. The connecting member 25 includes a bolt, which vertically penetrates the pressing plate 21, the supporting pin 23, and the positioning flange 24 in this order, and a washer (not shown), which is a hexagonal bolt, and is disposed between the bolt and the pressing plate 21. The pressing plate 21, the supporting pin 23, the positioning flange 24 and the connecting piece 25 are sequentially matched, through holes corresponding to each other are respectively formed in the pressing plate 21, the supporting pin 23 and the positioning flange 24, the through holes are used for accommodating long shafts of the bolts, and the gasket is arranged on one side of the pressing plate 21.
With continued reference to fig. 1, the first adjustment mechanism 3 is disposed on the outer peripheral surface of the first end 11 of the spindle 1, and the first adjustment mechanism 3 is disposed on the side of the end plug 20 facing away from the workpiece 1. The first adjustment mechanism 3 comprises a first spacer 32 and a first nut 33, the first nut 33 is arranged on the side of the end plug 20 facing away from the deep hole housing 200, the first nut 33 is in threaded engagement with the first threaded shaft of the spindle 1, and the first spacer 32 is arranged between the first nut 33 and the end plug 20.
As shown in fig. 1 and 2, the second adjusting mechanism 4 is disposed on the outer peripheral surface of the second end 12 of the spindle 1, the second adjusting mechanism 4 includes a second nut 41 and a second washer 42, the second washer 42 is disposed on a side of the positioning flange 24 facing away from the workpiece 100, the second nut 41 is disposed on a side of the second washer 42 facing away from the positioning flange 24, specifically, the second nut 41 and the second washer 42 are disposed in the second step hole 244 of the positioning flange 24, and the second washer 42 is matched with the step of the positioning flange 24.
Referring to fig. 1 and 2, the locking lever 5 includes a working end 51 and a handle 52, where the working end 51 includes a first hook and a side wall (not shown), the first hook is used to receive the second nut 41 of the second adjusting mechanism 4, and the first hook is an inner hexagon, the inner hexagon of the first hook is matched with the outer hexagon of the second nut 41, the inner peripheral surface of the side wall is matched with the outer peripheral surface of the second nut 41, the end surface of the side wall abuts against the second gasket 42, and the outer peripheral surface of the side wall is used to be matched with the inner peripheral surface of the second stepped hole 244 of the positioning flange 24. In addition, the handle 52 has a long hole 521, the long hole 521 extends axially and communicates with the jaw of the working end 51, the inner diameter of the long hole 521 is slightly larger than the outer diameter of the end of the second end 12, the long hole 521 is used for accommodating the end of the second end 12 of the spindle 1, and an arc-shaped protruding handle is further provided at the end of the second end 12. The outer diameter dimension of the handle 52 is smaller than the inner diameter dimension of the second stepped bore 244 of the locating flange 24. The second adjusting mechanism 4 is operated by the locking rod 5, after the working end 51 is screwed into the positioning flange 24 by rotating the handle 52 of the locking rod 5, free falling of the handle 52 can be effectively avoided, and the tiger mouth of the working end 51 and the second nut 41 cooperate to complete locking and disassembling functions, that is, the working end 51 drives the second nut 41 to rotate and is used for axially locking the positioning flange 24, and simultaneously, the expansion sleeve 22 is pressed to further lock the supporting pin 23.
As shown in fig. 1 and 2, the method for clamping the workpiece 100 and the deep hole casing 200 by using the clamping device of the present application includes the following steps:
S01: the key of the first fastener 30 is mounted on the optical axis 13 of the spindle 1 near the first end 11 by countersunk screws, and then the pressing plate 21, the bolt 251 and the spacer 252 of the connecting member 25, the expansion sleeve 22, the supporting pin 23 and the positioning flange 24 are mounted on the spindle 1 in sequence.
S02: the workpiece 100 is sleeved on the main shaft 1 from the side of the first end 11 of the main shaft 1, so that the positioning surface 130 of the workpiece 100 is attached to the positioning inclined surface 2410 of the positioning flange 24, and the second gasket 42 and the second nut 41 of the second adjusting mechanism 4 are mounted on the second threaded surface of the main shaft 1, so that the second adjusting mechanism 4 locks the workpiece 100.
S03: the working end 51 of the locking rod 5 is inserted into the second stepped hole 244 of the positioning flange 24, the jaw 511 of the working end 51 is matched with the second nut 41, and the workpiece 100 and the clamping device are fed into the deep hole 210 of the deep hole housing 200.
S04: the end plug 20 is fitted from the first end 11 of the spindle 1 and a first washer 32, a first nut 33 are in turn mounted on the first threaded shaft of the spindle 1.
S05: the clamping device and the workpiece 100 are circumferentially rotated and adjusted, the positioning groove 150 of the workpiece 100, which is the first positioning reference a, is aligned with the positioning hole 230 of the deep hole housing 200, which is the second positioning reference B, and the positioning screw 300 and the positioning pin 310 are respectively inserted into the aligned positioning hole 230 and the positioning groove 150, and the first nut 33 and the second nut 41 are sequentially locked, and the positioning pin 310 is taken out after the locking.
S06: the workpiece 100 is clamped and positioned on a machine tool, and drilling holes are arranged on the circumferential direction of the outer circumferential surface of the side wall 140 of the workpiece 100, namely, each series of hole groups are drilled on the deep hole shell 200 and the workpiece 100 at the same time, so that the machining is completed.
Compared with the prior art, the clamping device provided by the invention has the following beneficial effects: the clamping device can obviously improve the positioning precision of the workpiece 100, particularly the ring tooth part, greatly improve the operation convenience and improve the efficiency; in the process of the cooperation operation of the workpiece 100 and the deep hole shell 200, not only can quick and reliable positioning and clamping be realized, but also the rigidity of the workpiece 100 can be effectively improved so as to prevent the workpiece 100 from deforming, the tooth surface contact part of the hole 110 of the workpiece 100 is in radial floating support with the supporting pin 23, and due to the adoption of the split and stress groove 160 design, the larger radial adjustment quantity simultaneously allows the targeted selection of soft materials with high toughness and low hardness in terms of materials, the workpiece 100 can be protected from being damaged, and the problems of too small radial displacement quantity, uneven bearing surface stress, too large local stress, difficult manufacturing precision control and the like of a spring expansion sleeve in the prior art are effectively improved. In addition, the clamping device can provide references for the collision and positioning of similar or similar parts, can ensure the quality of products, improves the manufacturing efficiency, and has higher social and economic benefits.
The foregoing is merely a preferred embodiment of the clamping device of the present invention, and it should be noted that modifications and adaptations of the clamping device can be made by those skilled in the art without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A clamping device for clamping a workpiece assembled inside a deep hole housing, the clamping device comprising:
a spindle having a first end and a second end, the second end being configured to be disposed within a bore of a workpiece and to pass through the workpiece;
The locking and positioning mechanism comprises an end plug, a pressing disc, an expansion sleeve, a positioning flange and a supporting pin; the inner peripheral surface of the end plug is connected with the outer peripheral surface of the first end through a first fastener, the outer peripheral surface of the end plug is matched with the end part of the deep hole shell, and the pressing disc, the expansion sleeve and the positioning flange are sequentially arranged on the outer peripheral surface of the second end; and, an inner peripheral surface of an extended end of the pressing plate is connected to an outer peripheral surface of the second end by a second fastener; a positioning end of the positioning flange is matched with a positioning surface of the workpiece; and, the support pin is radially disposed between an inner surface of the hole of the work piece and an outer peripheral surface of the expansion shell;
a first adjusting mechanism arranged on the outer peripheral surface of the first end of the main shaft, and the first adjusting mechanism is matched with the end plug; and
The second adjusting mechanism is arranged on the outer peripheral surface of the second end of the main shaft and is matched with a free end of the positioning flange;
The main shaft is a stepped shaft structural member and comprises a first threaded shaft, an optical axis, an inclined plane optical axis, a transition shaft and a second threaded shaft which are sequentially arranged, wherein the first adjusting mechanism is in fastening fit with the first threaded shaft, the inner peripheral surface of the end plug is in fastening connection with one end of the optical axis, the inner peripheral surface of the pressing disc is in fastening connection with the other end of the optical axis, the inner peripheral surface of the expansion sleeve is in contact fit with the outer peripheral surface of the inclined plane optical axis, and the second adjusting mechanism is in fastening fit with the second threaded shaft;
The expansion sleeve is an integral elastic structural member, the expansion sleeve is a taper plug, the expansion sleeve comprises an inner hole, a conical side wall and a boss, the inner hole is axially arranged, the boss is radially arranged, the outer diameter of the boss is larger than the maximum outer diameter of the conical side wall, and the inner hole is in contact fit with the inclined plane optical axis;
The inner peripheral surface of the free end of the positioning flange comprises a step and a second step hole, the end surface of the positioning end of the positioning flange is provided with a positioning inclined surface, and the positioning inclined surface is used for being in contact fit with the positioning surface of the workpiece;
the clamping device further comprises a locking rod, the locking rod is provided with a working end, the outer peripheral surface of the working end is in contact fit with the inner surface of the second step hole of the positioning flange, and the inner peripheral surface of the working end is in contact fit with the outer peripheral surface of the second nut of the second adjusting mechanism.
2. The clamping device of claim 1, wherein the inner surface of the support pin is in contact engagement with the tapered side wall and the boss of the expansion shell, the outer surface of the support pin is in clearance engagement with the inner surface of the bore of the workpiece, the maximum inner diameter dimension of the support pin is less than the minimum inner diameter dimension of the bore of the workpiece, and the axial length of the support pin is equal to the axial length of the tapered side wall.
3. The clamping device according to claim 1, wherein the locking and positioning mechanism further comprises at least one connecting piece, the connecting piece is used for sequentially connecting the compressing end of the compressing disc, the supporting pin and the positioning end of the positioning flange in a fastening connection manner; wherein the connector comprises a bolt and a washer.
4. The clamping device of claim 1, wherein the first adjustment mechanism comprises a first spacer and a first nut, the first nut being disposed on a side of the end plug facing away from the deep hole housing, the first spacer being disposed between the first nut and the end plug, the first nut being threadably coupled to the first threaded shaft.
5. The clamping device of claim 4, wherein the first fastener and the second fastener each comprise a key and a countersunk head screw, the key is fixedly connected with the optical axis through the countersunk head screw, and the key is partially protruded from the outer surface of the optical axis.
6. The clamping device according to claim 1, wherein the second adjusting mechanism comprises a second gasket and a second nut, the second gasket is matched with the end face of the step of the positioning flange and the inner surface of the second step hole, the second nut is arranged on one side, away from the step, of the second gasket, and the second nut is in threaded connection with the second threaded shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010592178.5A CN111571275B (en) | 2020-06-24 | 2020-06-24 | Clamping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010592178.5A CN111571275B (en) | 2020-06-24 | 2020-06-24 | Clamping device |
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| CN111571275A CN111571275A (en) | 2020-08-25 |
| CN111571275B true CN111571275B (en) | 2024-06-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206305488U (en) * | 2016-12-09 | 2017-07-07 | 盐城秦川华兴机床有限公司 | A kind of slim external toothing workpiece automatic expanding clamper |
| CN206732296U (en) * | 2017-03-21 | 2017-12-12 | 重庆衡杰科技有限公司 | One kind, which is floated, compresses Fixture for Gear-shaving |
| CN207447388U (en) * | 2017-11-04 | 2018-06-05 | 烟台海德机床有限公司 | A kind of lathe hydraulic expansion sleeve clamp |
| CN109249050A (en) * | 2018-11-14 | 2019-01-22 | 无锡信捷电气股份有限公司 | Inner hole automatic centering clamping mechanism |
| CN210548800U (en) * | 2019-07-01 | 2020-05-19 | 上海第一机床厂有限公司 | Welding clamping device of nuclear power station control rod guide cylinder |
| CN111251028A (en) * | 2020-03-27 | 2020-06-09 | 湖南机电职业技术学院 | Clamp for numerical control machining |
| CN212444266U (en) * | 2020-06-24 | 2021-02-02 | 上海第一机床厂有限公司 | Clamping device |
-
2020
- 2020-06-24 CN CN202010592178.5A patent/CN111571275B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206305488U (en) * | 2016-12-09 | 2017-07-07 | 盐城秦川华兴机床有限公司 | A kind of slim external toothing workpiece automatic expanding clamper |
| CN206732296U (en) * | 2017-03-21 | 2017-12-12 | 重庆衡杰科技有限公司 | One kind, which is floated, compresses Fixture for Gear-shaving |
| CN207447388U (en) * | 2017-11-04 | 2018-06-05 | 烟台海德机床有限公司 | A kind of lathe hydraulic expansion sleeve clamp |
| CN109249050A (en) * | 2018-11-14 | 2019-01-22 | 无锡信捷电气股份有限公司 | Inner hole automatic centering clamping mechanism |
| CN210548800U (en) * | 2019-07-01 | 2020-05-19 | 上海第一机床厂有限公司 | Welding clamping device of nuclear power station control rod guide cylinder |
| CN111251028A (en) * | 2020-03-27 | 2020-06-09 | 湖南机电职业技术学院 | Clamp for numerical control machining |
| CN212444266U (en) * | 2020-06-24 | 2021-02-02 | 上海第一机床厂有限公司 | Clamping device |
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|---|---|
| CN111571275A (en) | 2020-08-25 |
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