CN215967503U - Inner hole positioning and holding device - Google Patents
Inner hole positioning and holding device Download PDFInfo
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- CN215967503U CN215967503U CN202121759197.9U CN202121759197U CN215967503U CN 215967503 U CN215967503 U CN 215967503U CN 202121759197 U CN202121759197 U CN 202121759197U CN 215967503 U CN215967503 U CN 215967503U
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Abstract
The utility model belongs to the field of machining, and relates to an inner hole positioning and holding device which comprises a workpiece, a central sleeve, a tongue plate, a tapered pin, a threaded gland and a compression spring, wherein the central sleeve comprises a step cap section, a positioning section and an end threaded section, blind holes are arranged in the positioning section and the end threaded section, an opening of each blind hole is positioned on the outer side of the end threaded section, the compression spring is arranged on the closed side of the blind hole, the tapered pin is arranged in the blind hole and comprises a tapered cylindrical section and a guide section, the end part of the tapered cylindrical section of the tapered pin compresses the compression spring, the guide section of the tapered pin is in sliding fit with the inner wall surface of the blind hole, the outer cylindrical surface of the positioning section of the central sleeve is provided with guide grooves uniformly distributed along the radial direction, the inner side end surface of the tongue plate is matched with the outer shape surface of the tapered cylindrical section of the tapered pin, the workpiece is sleeved outside the positioning section of the central sleeve, the threaded gland is sleeved on the end threaded section of the central sleeve, the workpiece is pressed, the inner hole clearance can be eliminated, the high concentricity device of the long annular workpiece is ensured, and the high concentricity requirement of the workpieces is met.
Description
Technical Field
The utility model belongs to the field of machining, and relates to an inner hole positioning and clamping device.
Background
For long annular workpieces with high concentricity requirements, the centering is performed in a fixed shaft mode in the past, and then the outer cylindrical surface is turned. Aiming at a long ring workpiece, when a shaft with a fixed size is matched with an inner hole of the workpiece, a certain gap is inevitably formed, and the inner hole of the workpiece cannot be finished consistently during processing, namely the inner hole is processed in different states every time, the reliability is poor, and the requirement of high concentricity of the long ring workpiece cannot be met.
The reasonable design can eliminate the inner hole clearance, ensure the high concentricity device of long annular work piece, satisfy the high concentricity requirement of this type of work piece.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is as follows: the inner hole positioning and clamping device is provided, the device for ensuring the high concentricity of the long annular workpiece is ensured, and the requirement of the high concentricity of the workpiece is met.
The technical scheme of the utility model is as follows:
an inner hole positioning and clamping device comprises a workpiece, a center sleeve, a tongue plate, a conical pin, a threaded gland and a compression spring, wherein the center sleeve comprises a step cap section, a positioning section and an end threaded section, blind holes are arranged in the positioning section and the end threaded section, an opening of each blind hole is positioned on the outer side of the end threaded section, the compression spring is arranged on the closed side of the blind hole, the conical pin is arranged in the blind hole and comprises a conical cylindrical section and a guide section, the end part of the conical cylindrical section of the conical pin compresses the compression spring, the guide section of the conical pin is in sliding fit with the inner wall surface of the blind hole, the outer cylindrical surface of the positioning section of the center sleeve is provided with guide grooves which are uniformly distributed along the radial direction, the tongue plate is arranged in the guide grooves, and the inner side end surface of the tongue plate is matched with the outer side surface of the conical cylindrical section of the conical pin, the workpiece is sleeved outside the positioning section of the central sleeve, and the threaded gland is sleeved on the threaded section of the end head of the central sleeve to compress the workpiece.
Furthermore, a first fixing groove is formed in the outer cylindrical surface of the positioning section of the center sleeve, a second fixing groove corresponding to the first fixing groove in the outer cylindrical surface of the positioning section of the center sleeve is also formed in the end face of the outer side of the tongue plate, and a first fixing groove and the second fixing groove form a fixing ring groove.
The tongue plate fixing device further comprises a rubber ring, wherein the rubber ring is arranged in the fixing ring groove, and the relative position of the central sleeve and the tongue plate is guaranteed to be fixed.
Furthermore, the center sleeve further comprises a cylindrical clamping section, and the cylindrical clamping section is tightly held with a lathe clamping jaw.
Further, center sleeve end screw thread section includes first cooperation section, first screw thread section, screw gland include second cooperation section, second screw thread section, first cooperation section and second cooperation section sliding fit, first screw thread section and second screw thread section screw-thread fit guarantee that screw gland front end face and the rear end face of work piece laminate completely and compress tightly.
Further, still include the backup pad, the backup pad sets up between the awl cylindricality section tip of taper pin and compression spring, guarantees that the taper pin is exerted pressure to compression spring evenly.
Furthermore, the taper pin also comprises a tail top section for applying force to the taper pin axially by a machine tool tail top tip, and the tail top section is provided with a straight groove.
Furthermore, a set screw is arranged on the end thread section of the central sleeve, and the lower end part of the set screw is arranged in the linear groove and can slide in the linear groove, so that the conical pin is prevented from being separated from the blind hole.
Furthermore, an avoidance area is arranged on the outer cylindrical surface of the positioning section of the center sleeve, so that the contact area between the center sleeve and the inner surface of the workpiece is reduced, and the workpiece is conveniently arranged on the positioning section.
Further, the outer diameters of the step cap section of the central sleeve and the threaded gland are smaller than the outer diameter of the workpiece, and a cutter is prevented from touching the central sleeve and the threaded gland during machining.
The utility model has the beneficial effects that: the utility model can eliminate the inner hole clearance, ensure the high concentricity device of the long annular workpiece and meet the high concentricity requirement of the workpieces.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an external schematic view of the present invention;
FIG. 3 is a schematic view of the screw gland 4 of the present invention;
FIG. 4 is a schematic view of the tapered pin 3 of the present invention;
FIG. 5 is a schematic view of the present invention core sleeve 1;
FIG. 6 is a cross-sectional view of FIG. 5 taken along direction AA;
wherein, 1, center cover, 2, hyoplastron, 3, taper pin, 4, screw gland, 5, compression spring, 6, backup pad, 7, rubber circle, 8, holding screw, 9, work piece, 10, guide way, 11, a word groove, 12, dodge the district, 13, fixed ring groove, 14, step cap section, 15, the location section, 16, end screw thread section, 17, cylinder centre gripping section, 18, awl cylinder section, 19, the direction section, 20, tail top section, 21, first cooperation section, 22, first screw thread section, 23, second cooperation section, 24, second screw thread section
Detailed Description
The technical solution is further described in detail below with reference to the accompanying drawings and the detailed description.
An inner hole positioning and clasping device comprises a workpiece, and further comprises a central sleeve 1, a tongue plate 2, a tapered pin 3, a threaded gland 4 and a compression spring 5, wherein the central sleeve 1 comprises a step cap section 14, a positioning section 15 and an end threaded section 16, blind holes are arranged in the positioning section 15 and the end threaded section 16, an opening of each blind hole is positioned on the outer side of the end threaded section 16, the compression spring 5 is arranged on the closed side of the blind hole, the tapered pin 3 is arranged in the blind hole, the tapered pin 3 comprises a tapered cylindrical section 18 and a guide section 19, the end part of the tapered cylindrical section 18 of the tapered pin 3 compresses the compression spring 5, the guide section 19 of the tapered pin 3 is in sliding fit with the inner wall surface of the blind hole, guide grooves 10 which are uniformly distributed along the radial direction are arranged on the outer cylindrical surface of the positioning section 15 of the central sleeve 1, and the tongue plate 2 is arranged in the guide grooves 10, the end surface of the inner side of the tongue plate 2 is matched with the outer surface of a conical cylindrical section 18 of the conical pin 3, the workpiece 9 is sleeved outside the positioning section 15 of the central sleeve 1, and the threaded gland 4 is sleeved on the end threaded section 16 of the central sleeve 1 to compress the workpiece 9.
Further, a first fixing groove is formed in the outer cylindrical surface of the positioning section 15 of the center sleeve 1, a second fixing groove corresponding to the first fixing groove in the outer cylindrical surface of the positioning section 15 of the center sleeve 1 is also formed in the outer end surface of the tongue plate 2, and the first fixing groove and the second fixing groove form a fixing ring groove 13.
Further, the tongue plate fixing device further comprises a rubber ring 7, wherein the rubber ring 7 is arranged in the fixing ring groove 13, and the relative position of the central sleeve 1 and the tongue plate 2 is guaranteed.
Further, the center sleeve 1 further comprises a cylindrical clamping section 17, and the cylindrical clamping section 17 is tightly held with a lathe claw.
Further, the threaded section 16 of the end of the center sleeve 1 comprises a first matching section 21 and a first threaded section 22, the screw gland 4 comprises a second matching section 23 and a second threaded section 24, the first matching section 21 is in sliding fit with the second matching section 23, the first threaded section 22 is in threaded fit with the second threaded section 24, and the front end face of the screw gland 4 is guaranteed to be completely attached to and pressed against the rear end face of the workpiece 9.
Further, the device also comprises a support plate 6, wherein the support plate 6 is arranged between the end part of the conical cylindrical section 18 of the conical pin 3 and the compression spring 5, and the conical pin 3 is ensured to uniformly apply pressure to the compression spring 5.
Further, the taper pin 3 further comprises a tail top section 20, the tail top section 20 is used for applying force to the taper pin 3 axially through a machine tool tail tip, and a straight groove 11 is formed in the tail top section 20.
Furthermore, a set screw 8 is arranged on the end threaded section 16 of the central sleeve 1, and the lower end part of the set screw 8 is arranged in the linear groove 11 and can slide in the linear groove 11, so that the conical pin 3 is prevented from being separated from the blind hole.
Furthermore, an avoidance area 12 is arranged on the outer cylindrical surface of the positioning section 15 of the center sleeve 1, so that the contact area between the center sleeve 1 and the inner surface of the workpiece 9 is reduced, and the workpiece 9 is conveniently mounted on the positioning section 15.
Further, the outer diameters of the step cap section 14 of the central sleeve 1 and the screw gland 4 are smaller than the outer diameter of a workpiece, and during machining, a cutter is prevented from touching the central sleeve 1 and the screw gland 4.
Example two:
the central sleeve 1 comprises three parts, namely a cylindrical clamping section 17, a step cap section 14, a positioning section 15 and an end head thread section 16 in sequence. A cylindrical clamping section 17 of a central sleeve 1 is used for clamping a lathe claw, a step cap section 14 of the central sleeve 1 is used for limiting the end of a workpiece 9, a positioning section 15 of the central sleeve 1 is an outer cylindrical surface slightly pinned than the minimum inner diameter of the workpiece 9, an even-number-times rectangular positioning groove is formed in the radial direction, a long central hole is formed in the center of the central sleeve 1, a threaded section 16 of the end of the central sleeve 1 is a guide cylinder with a certain length close to the positioning section 15, and a far positioning section is an external threaded section.
A compression spring 5, a support plate 6 and a conical pin 3 are sequentially arranged in a long central hole of the central sleeve 1;
the taper pin 3 is composed of two parts, one end is a taper cylindrical section 18, the other end is a cylindrical section which is in sliding fit with the long central hole of the central sleeve 1, wherein a waist-shaped groove is arranged on the cylindrical surface of the cylindrical section of the taper pin 3, and the waist-shaped groove is limited by a set screw 8 which is fixed on a threaded section 16 at the end of the central sleeve 1;
a tongue plate 2 is arranged in the rectangular positioning groove of the central sleeve 1, the tongue plate 2 is a plane with four sides sliding with the rectangular positioning groove of the central sleeve 1, the taper of the inner surface is consistent with that of the conical cylindrical section of the conical pin 3, and the inner surface is matched with a cylindrical cambered surface for positioning the inner hole of the workpiece;
two rings of fixing grooves for the O-shaped rubber ring 7 are formed on the positioning section of the central sleeve 1 and the tongue plate 2, so that the tongue plate 2 does not expose when not in work.
A compression spring 5, a support plate 6 and a conical pin 3 are sequentially placed in a long central hole of a central sleeve 1, and the end head is locked and limited by a set screw 8 to be adjusted within a certain range; sequentially placing the tongue plates 2 into the rectangular positioning grooves of the center sleeve 1, and fixing by adopting O-shaped rubber rings 7; during machining, a workpiece is sleeved into the positioning section of the central sleeve 1, the central sleeve 1 is slightly locked and fixed by the threaded gland 4, the cylindrical clamping section of the central sleeve 1 is connected with a lathe claw, the top of the other end of the lathe abuts against the end face of the cylindrical section of the taper pin 3, appropriate axial pressure is applied to enable the tongue plate 2 to radially expand outwards, the inner surface is tightly supported, positioning is achieved, and then the threaded gland 4 is fastened, so that the workpiece can be machined.
After the machining is finished, the center of the lathe is far away, the tongue plate 2 contracts through the O-shaped rubber ring 7, moves radially, is far away from the inner surface of the workpiece, and the clamping jaw is released and taken out. Then the fastening screw gland 4 is disassembled and the workpiece is taken out.
The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.
Claims (10)
1. The utility model provides a hole location cohesion device, includes work piece (9), its characterized in that: the spring type spring bolt comprises a center sleeve (1), a tongue plate (2), a tapered pin (3), a threaded gland (4) and a compression spring (5), wherein the center sleeve (1) comprises a step cap section (14), a positioning section (15) and an end threaded section (16), blind holes are formed in the positioning section (15) and the end threaded section (16), an opening of each blind hole is positioned on the outer side of the end threaded section (16), the compression spring (5) is arranged on the closed side of the blind hole, the tapered pin (3) is arranged in the blind hole, the tapered pin (3) comprises a tapered cylindrical section (18) and a guide section (19), the end part of the tapered cylindrical section (18) of the tapered pin (3) compresses the compression spring (5), the guide section (19) of the tapered pin (3) is in sliding fit with the inner wall surface of the blind hole, guide grooves (10) which are uniformly distributed along the radial direction are formed in the outer cylindrical surface of the positioning section (15) of the center sleeve (1), the tongue plate (2) is arranged in the guide groove (10), the end surface of the inner side of the tongue plate (2) is matched with the outer surface of a conical cylindrical section (18) of the conical pin (3) in a fit mode, the workpiece (9) is sleeved outside a positioning section (15) of the central sleeve (1), and the threaded gland (4) is sleeved on an end threaded section (16) of the central sleeve (1) to compress the workpiece (9).
2. An internal bore positioning and clasping device as claimed in claim 1, wherein: the tongue plate fixing device is characterized in that a first fixing groove is formed in the outer cylindrical surface of the positioning section (15) of the center sleeve (1), a second fixing groove corresponding to the first fixing groove in the outer cylindrical surface of the positioning section (15) of the center sleeve (1) is also formed in the outer side end face of the tongue plate (2), and a first fixing groove and the second fixing groove form a first fixing ring groove (13).
3. An internal bore positioning and clasping device as claimed in claim 2, wherein: the tongue plate fixing device is characterized by further comprising a rubber ring (7), wherein the rubber ring (7) is arranged in the fixing ring groove (13) to ensure that the relative position of the central sleeve (1) and the tongue plate (2) is fixed.
4. An internal bore positioning and clasping device as claimed in claim 1, wherein: the center sleeve (1) further comprises a cylindrical clamping section (17), and the cylindrical clamping section (17) is tightly held with a lathe claw.
5. An internal bore positioning and clasping device as claimed in claim 1, wherein: center sleeve (1) end screw thread section (16) include first cooperation section (21), first screw thread section (22), screw gland (4) including second cooperation section (23), second screw thread section (24), first cooperation section (21) and second cooperation section (23) sliding fit, first screw thread section (22) and second screw thread section (24) screw-thread fit guarantee that screw gland (4) preceding terminal surface and the (9) rear end face of work piece laminate completely and compress tightly.
6. An internal bore positioning and clasping device as claimed in claim 1, wherein: the taper pin pressing device is characterized by further comprising a supporting plate (6), wherein the supporting plate (6) is arranged between the end part of the taper cylindrical section of the taper pin (3) and the compression spring (5), and the taper pin (3) is guaranteed to uniformly apply pressure to the compression spring (5).
7. An internal bore positioning and clasping device as claimed in claim 1, wherein: the taper pin (3) further comprises a tail top section (20) used for applying force to the taper pin (3) axially by a machine tool tail top, and the tail top section (20) is provided with a straight groove (11).
8. An internal bore positioning and clasping device as claimed in claim 7, wherein: the end thread section (16) of the central sleeve (1) is provided with a set screw (8), the lower end part of the set screw (8) is arranged in the straight groove (11) and can slide in the straight groove (11), and the conical pin (3) is prevented from being separated from the blind hole.
9. An internal bore positioning and clasping device as claimed in claim 7, wherein: the outer cylindrical surface of the positioning section (15) of the central sleeve (1) is provided with an avoiding area (12), so that the contact area between the central sleeve (1) and the inner surface of the workpiece (9) is reduced, and the workpiece (9) is conveniently arranged on the positioning section (15).
10. An internal bore positioning and clasping device as claimed in claim 1, wherein: the outer diameters of the step cap section (14) of the central sleeve (1) and the threaded gland (4) are smaller than the outer diameter of the workpiece (9), and a cutter is prevented from touching the central sleeve (1) and the threaded gland (4) during machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759197.9U CN215967503U (en) | 2021-07-30 | 2021-07-30 | Inner hole positioning and holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759197.9U CN215967503U (en) | 2021-07-30 | 2021-07-30 | Inner hole positioning and holding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215967503U true CN215967503U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759197.9U Active CN215967503U (en) | 2021-07-30 | 2021-07-30 | Inner hole positioning and holding device |
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| Country | Link |
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| CN (1) | CN215967503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876968A (en) * | 2022-07-12 | 2022-08-09 | 四川工程职业技术学院 | Connecting structure of positioning cone |
-
2021
- 2021-07-30 CN CN202121759197.9U patent/CN215967503U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876968A (en) * | 2022-07-12 | 2022-08-09 | 四川工程职业技术学院 | Connecting structure of positioning cone |
| CN114876968B (en) * | 2022-07-12 | 2022-10-11 | 四川工程职业技术学院 | Connecting structure of positioning cone |
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