CN210306779U - Three-jaw internal support clamp assembly - Google Patents
Three-jaw internal support clamp assembly Download PDFInfo
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- CN210306779U CN210306779U CN201920576616.1U CN201920576616U CN210306779U CN 210306779 U CN210306779 U CN 210306779U CN 201920576616 U CN201920576616 U CN 201920576616U CN 210306779 U CN210306779 U CN 210306779U
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Abstract
The utility model discloses a three-jaw internal stay anchor clamps subassembly, which comprises a supporting frame, the bevel pinion shaft, the bull bevel gear, first lead screw, the second lead screw, screw nut, the connecting block, the dish spring, the connecting seat, one side of support frame is equipped with open-ended fixing base in the middle of one, bevel pinion shaft and the transmission of the bevel pinion interlock that is located support frame central point and puts, the bull bevel gear is connected with screw nut transmission through first screw, first lead screw combines for the ejector pin lead screw with second lead screw fixed connection, the guide seat is located the top of bearing frame, and the keyway cooperation through the inside guide key of guide seat and second lead screw surface restricts the ejector pin lead screw and rotates. The utility model discloses a bevel pinion shaft and bevel gear wheel cooperation drive bevel gear wheel with bevel pinion shaft pivoted power and rotate, thereby the screw nut who is connected with bevel gear wheel drives ejector pin lead screw oscilaltion simultaneously and takes the slider at the horizontal direction motion, further turns into the horizontal force with the axial force and has realized the effect that compresses tightly the work piece.
Description
Technical Field
The utility model relates to a machinery frock field, concretely relates to three-jaw internal stay anchor clamps subassembly.
Background
The screw-nut mechanism, also known as a screw drive mechanism, can convert the rotational movement of a nut into a linear movement of a screw for transmitting an axial force. If there is a small closed space and there is an object around it, the space for turning the nut is limited and the function of transmitting axial force cannot be realized. The utility model discloses a spiral bevel gear ball screw lifter (CN 2016200417349) in Chinese utility model, which comprises a box body, a power input shaft is rotatably arranged on the box body, a first end of the power input shaft extends out of the box body, and a second end of the power input shaft is positioned in the box body; the second end is fixedly connected with a spiral bevel gear; a ball screw nut matched with the spiral bevel gear is rotatably arranged in the box body; and a ball screw matched with the ball screw nut is rotatably arranged in the box body. But the self-locking capability of the ball screw in the device is poor, and the device cannot bear heavy load.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a three-jaw internal stay anchor clamps subassembly uses trapezoidal lead screw to increase the function of auto-lock and drives the motion of slider horizontal direction through the lead screw oscilaltion to turn into the horizontal force with the axial force and realized the effect that compresses tightly the work piece.
The utility model discloses a function realizes through following technical scheme:
a three-jaw internal-bracing fixture assembly comprises a support frame, a small bevel gear shaft, a large bevel gear, a first lead screw, a second lead screw, a lead screw nut, a connecting block, a disc spring and a connecting seat, wherein a fixing seat with an opening in the middle is arranged on one side of the support frame and penetrates through the fixing seat, and the support frame is rotatably connected with the small bevel gear shaft; the bevel pinion shaft is in meshing transmission with a large bevel gear positioned in the center of the support frame, and the large bevel gear is in transmission connection with a lead screw nut through a first screw; the bottom of the first lead screw penetrates through the lead screw nut and is in threaded connection with the lead screw nut, and the lead screw nut is rotatably arranged at the center of the base of the support frame; the first lead screw and the second lead screw are fixedly connected to form a top rod lead screw, and the connecting seat comprises a bearing seat, a first bearing, a second bearing and a guide seat; the first bearing and the second bearing are arranged in the bearing seat from bottom to top, the guide seat is positioned above the bearing seat and is matched with a guide key in the guide seat and a key groove on the surface of the second lead screw to limit the rotation of the mandril lead screw; the connecting block is fixed in the middle of the second screw rod and is connected with a sliding block positioned at the top of the support frame through a connecting rod, the sliding block slides back and forth on a bottom plate at the top of the support frame, and the outer side of the sliding block is fixedly connected with a thick base plate through a second screw; the disc spring is internally provided with a plurality of springs which are sequentially arranged from bottom to top and are connected with the top of the connecting block through spring supporting washers, and the top end of the second lead screw is in threaded connection with a first nut.
Further, the ejector rod lead screw is a trapezoidal lead screw.
Further, the screw nut is installed at the bottom of the support frame through a nut support seat.
Furthermore, the first bearing is a double-row angular contact ball bearing, and the second bearing is a cylindrical thrust roller bearing.
Furthermore, a spring sheath is arranged outside the disc spring, and a spring retainer ring is arranged at the top end inside the spring sheath to separate the spring from a top cover of the spring sheath.
Further, the springs are sleeved on the second lead screw through a sleeve.
Further, the connecting seat is fixed at the top end inside the supporting frame through a third screw.
Further, the number of the sliding blocks is three, and each sliding block is connected with the connecting block through two connecting rods.
Furthermore, the connecting rod is respectively hinged with the connecting block and the sliding block through pin shafts.
Furthermore, both sides of the bottom plate are provided with side plates.
The utility model has the advantages that:
1. the bevel gear shaft and the bevel gear are matched to drive the bevel gear shaft to rotate, so that the bevel gear is driven to rotate by the power generated by the rotation of the bevel gear shaft, the screw nut is driven, and the rotation of the ejector rod screw rod is limited by the guide seat, so that the ejector rod screw rod only moves axially.
2. The trapezoidal lead screw has a self-locking function, so that pressing force is guaranteed.
3. The axial movement of the lead screw drives the sliding block to move in the horizontal direction, so that the inner support workpiece can be clamped conveniently, and the workpiece can be stably compressed.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a sectional view of the structure of the present invention;
FIG. 3 is a sectional view of a part of the connecting base;
1. the support frame, 2, little bevel gear axle, 3, big bevel gear, 4, first lead screw, 5, second lead screw, 6, screw nut, 7, connecting block, 8, dish spring, 9, fixing base, 10, first screw, 11, connecting seat, 12, bearing frame, 13, first bearing, 14, second bearing, 15, guide holder, 16, connecting rod, 17, slider, 18, second screw, 19, thick backing plate, 20, spring, 21, spring support packing ring, 22, first nut, 23, nut supporting seat, 24, spring sheath, 25, circlip, 26, third screw, 27, round pin axle, 28, curb plate.
Detailed Description
For further explanation of the invention, reference is made to the following description, taken in conjunction with the accompanying fig. 1-2:
the utility model provides a three-jaw internal stay anchor clamps subassembly, including support frame 1, little bevel gear axle 2, big bevel gear 3, first lead screw 4, second lead screw 5, screw nut 6, connecting block 7, dish spring 8, connecting seat 11, one side of support frame 1 is equipped with middle open-ended fixing base 9, pass fixing base 9, support frame 1 rotates and connects little bevel gear axle 2, little bevel gear axle 2 and the big bevel gear 3 interlock transmission that is located 1 central point of support frame and puts, big bevel gear 3 is connected with screw nut 6 transmission through first screw 10.
The bottom of first lead screw 4 passes lead screw nut 6 and with lead screw nut 6 threaded connection, lead screw nut 6 rotatable the installation in the base center department of support frame 1. The first lead screw 4 and the second lead screw 5 are fixedly connected and combined into a mandril lead screw, and the connecting seat 11 comprises a bearing seat 12, a first bearing 13, a second bearing 14 and a guide seat 15. Wherein the first bearing 13 and the second bearing 14 are arranged in the bearing seat 12 from bottom to top, the guide seat 15 is positioned above the bearing seat 12, and the rotation of the mandril lead screw is limited by the matching of a guide key in the guide seat 15 and a key groove on the surface of the second lead screw 5.
When the bevel gear is used, the bevel pinion shaft 2 is rotated by using a long wrench, so that a transverse force is generated at the contact part of the bevel pinion shaft 2 and the bevel pinion 3, the bevel pinion 3 is driven to rotate, and the lead screw nut 6 connected with the bevel pinion 3 is driven to start rotating. The first lead screw 4 is in threaded connection with the lead screw nut 6, so that the lead screw nut 6 can drive the first lead screw 4 to rotate when rotating, but the guide seat 15 limits the second lead screw 5 to rotate, and therefore the ejector rod lead screw can only move axially.
The connecting block 7 is fixed in the middle of the second lead screw 5 and is connected with a sliding block 17 positioned at the top of the support frame 1 through a connecting rod 16, the sliding block 17 slides back and forth on a bottom plate at the top of the support frame 1, and the outer side of the sliding block 17 is fixedly connected with a thick backing plate 19 through a second screw 18. The inside of the disc spring 8 is sequentially provided with a plurality of springs 20 from bottom to top and is connected with the top of the connecting block 7 through a spring supporting washer 21, and the top end of the second lead screw 5 is in threaded connection with a first nut 22.
When the second lead screw 5 rises, the connecting rod 16 drives the sliding block 17 to move inwards, so that the internal-supporting workpiece is sleeved in the clamping range of the clamp. When the second lead screw 5 descends, the connecting rod 16 drives the sliding block 17 to move outwards, so that the inner support workpiece is clamped by the thick cushion plate connected with the sliding block 17.
In the embodiment, the ejector rod lead screw is a trapezoidal lead screw, and can be self-locked when the lead angle of the trapezoidal lead screw is smaller than the equivalent friction angle, and can not be self-locked when the lead angle of the trapezoidal lead screw is larger than or equal to the equivalent friction angle.
In this embodiment, the screw nut 6 is mounted on the bottom of the support frame 1 through a nut support base 23.
In this embodiment, the first bearing 13 is a double row angular contact ball bearing, and the second bearing 14 is a cylindrical thrust roller bearing. The double-row angular contact ball bearing can bear radial load and axial load acting in two directions, can limit axial displacement of a shaft or a shell in two directions, and the cylindrical thrust roller bearing can bear heavy load and vibration load.
In this embodiment, a spring sheath 24 is provided outside the disc spring 8, and a spring collar 25 is provided at the top end inside the spring sheath 24 to separate the spring 20 from the top cover of the spring sheath 24.
In this embodiment, the plurality of springs 20 are sleeved on the second lead screw 4 through the sleeve, so that the springs 20 and the second lead screw 4 are prevented from generating friction to affect the service life and the precision.
The connecting base 11 in this embodiment is fixed at the top end inside the supporting frame 1 by a third screw 26.
In this embodiment, the number of the sliding blocks 17 is three, and each sliding block 17 is connected with the connecting block 7 through two connecting rods 16, so that three-point clamping is realized and the stability is improved.
In this embodiment, the connecting rod is hinged to the connecting block 7 and the sliding block 17 through a pin 27.
In this embodiment, side plates 28 are disposed on both sides of the bottom plate to limit the sliding block 17 from separating from the bottom plate.
In addition, the spring 20 in the disc spring 8 can be combined in various ways, so that the axial pressure is changed, and the pressing force of the clamp can be adjusted according to different products conveniently.
Claims (10)
1. The utility model provides a three-jaw internal stay anchor clamps subassembly, includes support frame, bevel pinion shaft, big bevel gear, first lead screw, second lead screw, screw nut, connecting block, dish spring, connecting seat, its characterized in that: a fixed seat with an opening in the middle is arranged on one side of the supporting frame and penetrates through the fixed seat, and the supporting frame is rotatably connected with a small bevel gear shaft; the bevel pinion shaft is in meshing transmission with a large bevel gear positioned in the center of the support frame, and the large bevel gear is in transmission connection with a lead screw nut through a first screw; the bottom of the first lead screw penetrates through the lead screw nut and is in threaded connection with the lead screw nut, and the lead screw nut is rotatably arranged at the center of the base of the support frame; the first lead screw and the second lead screw are fixedly connected to form a top rod lead screw, and the connecting seat comprises a bearing seat, a first bearing, a second bearing and a guide seat; the first bearing and the second bearing are arranged in the bearing seat from bottom to top, the guide seat is positioned above the bearing seat and is matched with a guide key in the guide seat and a key groove on the surface of the second lead screw to limit the rotation of the mandril lead screw; the connecting block is fixed in the middle of the second screw rod and is connected with a sliding block positioned at the top of the support frame through a connecting rod, the sliding block slides back and forth on a bottom plate at the top of the support frame, and the outer side of the sliding block is fixedly connected with a thick base plate through a second screw; the disc spring is internally provided with a plurality of springs which are sequentially arranged from bottom to top and are connected with the top of the connecting block through spring supporting washers, and the top end of the second lead screw is in threaded connection with a first nut.
2. The three-jaw internal stay clamp assembly of claim 1, wherein: the ejector rod lead screw is a trapezoidal lead screw.
3. The three-jaw internal stay clamp assembly of claim 1, wherein: the screw nut is arranged at the bottom of the support frame through the nut support seat.
4. The three-jaw internal stay clamp assembly of claim 1, wherein: the first bearing is a double-row angular contact ball bearing, and the second bearing is a thrust cylindrical roller bearing.
5. The three-jaw internal stay clamp assembly of claim 1, wherein: the dish spring outside is equipped with the spring sheath, the inside top of spring sheath sets up the spring collar and separates the top cap of spring sheath with the spring.
6. The three-jaw internal stay clamp assembly of claim 1, wherein: the springs are sleeved on the second lead screw through a sleeve.
7. The three-jaw internal stay clamp assembly of claim 1, wherein: the connecting seat is fixed at the top end inside the supporting frame through a third screw.
8. The three-jaw internal stay clamp assembly of claim 1, wherein: the number of the sliding blocks is three, and each sliding block is connected with the connecting block through two connecting rods.
9. The three-jaw internal stay clamp assembly of claim 8, wherein: the connecting rod is hinged with the connecting block and the sliding block through pin shafts respectively.
10. The three-jaw internal stay clamp assembly of claim 1, wherein: and side plates are arranged on two sides of the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576616.1U CN210306779U (en) | 2019-04-25 | 2019-04-25 | Three-jaw internal support clamp assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576616.1U CN210306779U (en) | 2019-04-25 | 2019-04-25 | Three-jaw internal support clamp assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210306779U true CN210306779U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920576616.1U Active CN210306779U (en) | 2019-04-25 | 2019-04-25 | Three-jaw internal support clamp assembly |
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| CN (1) | CN210306779U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216499A (en) * | 2019-04-25 | 2019-09-10 | 南京合信智能装备有限公司 | A kind of three-jaw inner support clamp component |
| CN111515821A (en) * | 2020-05-08 | 2020-08-11 | 杭州迹瑞工贸有限公司 | Cylindrical casting fine grinding device based on three-jaw centering principle |
| CN111941348A (en) * | 2020-08-12 | 2020-11-17 | 泉州市朗利工业设计有限公司 | Automatic assembly device is used in processing of outer lane in high-speed bearing |
| CN113833770A (en) * | 2021-09-28 | 2021-12-24 | 浙江辛子精工机械有限公司 | Automatic assembling device for inner ring and outer ring of high-speed bearing |
-
2019
- 2019-04-25 CN CN201920576616.1U patent/CN210306779U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216499A (en) * | 2019-04-25 | 2019-09-10 | 南京合信智能装备有限公司 | A kind of three-jaw inner support clamp component |
| CN111515821A (en) * | 2020-05-08 | 2020-08-11 | 杭州迹瑞工贸有限公司 | Cylindrical casting fine grinding device based on three-jaw centering principle |
| CN111941348A (en) * | 2020-08-12 | 2020-11-17 | 泉州市朗利工业设计有限公司 | Automatic assembly device is used in processing of outer lane in high-speed bearing |
| CN113833770A (en) * | 2021-09-28 | 2021-12-24 | 浙江辛子精工机械有限公司 | Automatic assembling device for inner ring and outer ring of high-speed bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220316 Address after: Floor 14, building A1, Huizhi Science Park, Hengtai Road, Nanjing Economic and Technological Development Zone, Jiangsu 210038 Patentee after: NANJING HEXIN AUTOMATION Co.,Ltd. Address before: 210046 building B1, Hongfeng science and Technology Park, Qixia District, Nanjing City, Jiangsu Province Patentee before: NANJING LETTER INTELLIGENT EQUIPMENT CO.,LTD. |
|
| TR01 | Transfer of patent right |