CN216461942U - Internal expanding type centering drilling clamp - Google Patents

Internal expanding type centering drilling clamp Download PDF

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Publication number
CN216461942U
CN216461942U CN202122593790.7U CN202122593790U CN216461942U CN 216461942 U CN216461942 U CN 216461942U CN 202122593790 U CN202122593790 U CN 202122593790U CN 216461942 U CN216461942 U CN 216461942U
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China
Prior art keywords
conical
hole
plate
pressing plate
conical shaft
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Active
Application number
CN202122593790.7U
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Chinese (zh)
Inventor
沈杰
陈超
宋智能
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Jiangsu Tangchen Automobile Parts Co Ltd
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Jiangsu Tangchen Automobile Parts Co Ltd
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Priority to CN202122593790.7U priority Critical patent/CN216461942U/en
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Abstract

The utility model discloses an internal expansion type centering drilling clamp, and relates to the technical field of machining product clamps. A conical shaft penetrates through the center of the flange plate, a conical shaft combining cap is fixed at the bottom of the flange plate, and the lower part of the conical shaft penetrates through the conical shaft combining cap; a transition conical surface is arranged between the upper part of the conical shaft and the stepped structure; an expansion sleeve is sleeved on the periphery of the conical shaft; a first step hole and a second step hole are arranged below the center of the conical shaft, a conical pressing plate is arranged in the second step hole, and the conical pressing plate is of a T-shaped structure; a through hole, a third step hole and a fourth step hole are formed in the center of the conical pressing plate, a screw mandrel penetrates through the conical pressing plate and the conical shaft, a convex ring is arranged in the middle of the screw mandrel, and the conical pressing plate and a cap are connected with the conical pressing plate through bolts; the periphery of the upper part of the screw mandrel is sleeved with an opening pressing plate, and the top of the opening pressing plate is provided with a flange nut. The utility model has the advantages that: the product clamping and positioning precision is high, and the precision of hole position processing of the product is improved; and the product is convenient to clamp and disassemble.

Description

Internal expanding type centering drilling clamp
Technical Field
The utility model relates to the technical field of clamps for machining products, in particular to an internal expansion type centering drilling clamp.
Background
The machining product needs to be clamped and fixed through a clamp when drilling, so that the hole can be machined conveniently. Many products have high requirements on drilling position and center positioning.
In the prior art, when a product with a middle hole needs to be drilled, the middle hole of the product is usually positioned by adopting a solid core shaft, after the product is compressed, the center of a machining coordinate circle is adjusted by adopting a dial indicator, so that the center of the machining coordinate circle is unified with the center of the product, time and labor are wasted, the positioning accuracy is poor, the clamping is inconvenient, and the drilling accuracy of the product is greatly influenced by operating factors.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an internal expanding type centering drilling clamp, which can solve the problems that in the prior art, when product drilling is clamped and fixed, the positioning accuracy is poor, clamping is inconvenient, and the product drilling accuracy is greatly influenced by operation factors.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the device comprises a flange plate, a conical shaft, an expansion sleeve, a conical pressing plate, a screw mandrel, a flange nut and an opening pressing plate;
the flange plate is fixed on the upper plate, the upper plate is supported and fixed on the bottom plate through the stand column, a stepped hole is formed in the center of the flange plate, a conical shaft penetrates through the stepped hole, a round hole is formed in the center of the upper plate, the bottom of the conical shaft extends out of the bottom of the flange plate to be arranged in the round hole of the upper plate, a conical shaft and a conical shaft cap are fixed on the bottom of the flange plate through bolts, the conical shaft and the conical shaft cap are arranged in the round hole of the upper plate, the lower portion of the conical shaft penetrates through a screw hole of the conical shaft and the conical shaft cap, and the lower portion of the conical shaft and the conical shaft cap are fixedly screwed through threads;
a stepped structure corresponding to the stepped hole of the flange plate is arranged outside the conical shaft, the stepped structure of the conical shaft is supported through the stepped hole of the flange plate, and a transition conical surface is arranged between the upper part of the conical shaft and the stepped structure;
an expansion sleeve is sleeved on the periphery of the conical shaft, symmetrical conical surfaces are arranged above and below the inner side of the expansion sleeve, and the conical surface below the inner side of the expansion sleeve is arranged corresponding to the transition conical surface of the conical shaft;
a first step hole is formed below the center of the conical shaft, a second step hole is formed above the first step hole, a conical pressing plate is arranged in the second step hole, the conical pressing plate is of a T-shaped structure, the lower portion of the conical pressing plate is arranged in the second step hole, the top of the conical pressing plate is arranged at the top of the conical shaft, and a downward pressing conical surface corresponding to a conical surface above the inner side of the expanding sleeve is arranged below the outer side surface of the top of the conical pressing plate;
the center of the conical pressing plate is provided with a through hole, the top of the through hole is communicated with a third step hole, the top of the third step hole is communicated with a fourth step hole, the hole diameters of the through hole, the third step hole and the fourth step hole are gradually increased, a screw mandrel is arranged in the conical pressing plate and the conical shaft in a penetrating mode, the lower portion of the screw mandrel is arranged in the through hole in the center of the conical pressing plate and the first step hole in the center of the conical shaft, and the lower portion of the screw mandrel is in threaded connection with the first step hole in the center of the conical shaft;
a convex ring is arranged in the middle of the screw mandrel, the convex ring is correspondingly arranged in a third step hole of the conical pressing plate, a conical pressing plate and cap are correspondingly arranged in a fourth step hole, the conical pressing plate and cap and the conical pressing plate are connected through a bolt, the inner diameter of the conical pressing plate and cap is smaller than the outer diameter of the convex ring, and the convex ring is clamped in the third step hole;
the diameter on the upper portion of screw rod dabber is greater than the diameter of lower part, and the center of awl clamp plate and cap is passed on the upper portion of screw rod dabber, and the upper portion periphery cover of screw rod dabber is equipped with the opening clamp plate, the bottom of opening clamp plate is equipped with the opening, and the bottom opening cover of opening clamp plate is in the outside at the top of awl clamp plate, the top of opening clamp plate is equipped with the flange nut, the upper portion of screw rod dabber is located to the flange nut cover, and the screw thread connects soon between the upper portion of flange nut and screw rod dabber.
Furthermore, the top of upper plate is equipped with the inner groovy, the bottom of ring flange is equipped with the arch, and the arch of ring flange bottom is located and is obtained spacingly in the recess at upper plate top, and passes through bolted connection between ring flange and the upper plate and fix.
Furthermore, a waist-shaped hole is formed in the expansion sleeve, a positioning hole is formed in the outer side of the conical shaft, and the expansion sleeve and the conical shaft are limited in position by the positioning rod penetrating through the waist-shaped hole and the positioning hole.
Furthermore, the connection between the top of the conical pressing plate and the lower part of the conical pressing plate is of an arc-shaped structure, and the inner side of the top of the conical shaft is provided with an arc-shaped surface corresponding to the arc-shaped structure.
Furthermore, cushion blocks are distributed on the outer side edge of the top of the flange plate, the cushion blocks and the flange plate are fixed through bolts, fixing screw holes are formed in the cushion blocks, and an arc-shaped groove is formed in the middle of the inner side of each cushion block.
After adopting the structure, the utility model has the advantages that: the screw mandrel is screwed down through positive rotation, the screw mandrel rotates and moves downwards, the conical pressing plate is pushed to move downwards in the second step hole of the conical shaft under the action of the convex ring in the middle of the screw mandrel, the lower pressing conical surface of the conical pressing plate presses the expansion sleeve downwards, the conical surface below the expansion sleeve moves downwards along the transition conical surface of the conical shaft in the pressing process of the expansion sleeve, the expansion sleeve is spread, the expansion sleeve supports and fixes the middle hole of the product to achieve the purpose of centering the middle hole of the product, the flange nut is screwed down to enable the opening pressing plate to tightly press the workpiece, the clamping and positioning precision of the product is high, and the processing precision of the hole position of the product is improved;
after the product drilling processing is completed, the flange nut is loosened, the opening pressing plate is detached, the screw mandrel is reversed, the screw mandrel moves upwards to drive the cone pressing plate and the cap to ascend, the expansion sleeve contracts and returns, the fixation of the product is removed, the product can be detached, and the product is convenient to clamp and detach.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic structural view of clamping a product according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
As shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: the device comprises a flange plate 1, a conical shaft 2, an expansion sleeve 3, a conical pressing plate 4, a screw mandrel 5, a flange nut 6 and an opening pressing plate 7.
On ring flange 1 was fixed in upper plate 8, upper plate 8 supported through stand 9 and was fixed in on bottom plate 10, and the top outside limit of ring flange 1 distributes and has cushion 13, through the bolt fastening between cushion 13 and the ring flange 1, has seted up fixed screw on the cushion 13, is the arc recess in the middle of cushion 13's the inboard, and cushion 13 is spacing to the outside of product 20, and fixes the avris otic placode of product 20.
The center of ring flange 1 is equipped with the shoulder hole, wear to be equipped with awl axle 2 in the shoulder hole, the center of upper plate 8 is equipped with the round hole, the bottom of awl axle 2 stretches out in the round hole of ring flange 1 bottom to upper plate 8, the bottom bolt fastening of ring flange 1 has awl axle and cap 11, awl axle and cap 11 are located in the round hole of upper plate 8, the below of awl axle 2 is worn to locate in the screw of awl axle and cap 11, and the below of awl axle 2 connects fixedly through the screw with awl axle and cap 11 soon.
The top of upper plate 8 is equipped with the inner groovy, and the bottom of ring flange 1 is equipped with the arch, and the arch of ring flange 1 bottom obtains spacingly in locating the recess at 8 tops of upper plate, and fixes through bolted connection between ring flange 1 and the upper plate 8.
The outer part of the conical shaft 2 is provided with a stepped structure 21 corresponding to the stepped hole of the flange plate 1, the stepped structure 21 of the conical shaft 2 is supported through the stepped hole of the flange plate 1, and a transition conical surface 22 is arranged between the upper part of the conical shaft 2 and the stepped structure 21.
The periphery cover of awl axle 2 is equipped with the cover 3 that rises, and the top and the below of the inboard of cover 3 that rises are equipped with symmetrical conical surface, and the conical surface of the inboard below of cover 3 that rises sets up corresponding to the transition conical surface 22 of awl axle 2, is equipped with waist type hole on the cover 3 that rises, and the outside of awl axle 2 is equipped with the locating hole, passes waist type hole and locating hole through the locating lever between cover 3 and the awl axle 2 and carries out position limitation.
The center below of awl axle 2 is equipped with first step hole 23, the top in first step hole 23 is equipped with second step hole 24, be equipped with awl clamp plate 4 in the second step hole 24, awl clamp plate 4 is T type structure, second step hole 24 is located to the below of awl clamp plate 4, 2 tops of awl axle are located to the top of awl clamp plate 4, and the lateral surface below at the top of awl clamp plate 4 is equipped with and rises the corresponding conical surface 41 that pushes down of the conical surface of 3 inboard tops of cover, the junction between the top of awl clamp plate 4 and the below is the arc structure, establish to the arc surface corresponding with the arc structure in the inboard at awl axle 2 top.
The center of the conical pressing plate 4 is provided with a through hole 42, the top of the through hole 42 is communicated with a third step hole 43, the top of the third step hole 43 is communicated with a fourth step hole 44, the hole diameters of the through hole 42, the third step hole 43 and the fourth step hole 44 are gradually increased, a screw mandrel 5 penetrates through the conical pressing plate 4 and the conical shaft 2, the lower part of the screw mandrel 5 is arranged in the through hole 42 in the center of the conical pressing plate 4 and the first step hole 23 in the center of the conical shaft 2, and the lower part of the screw mandrel 5 is in threaded connection with the first step hole 23 in the center of the conical shaft 2.
The middle part of the screw mandrel 5 is provided with a convex ring 51, the convex ring 51 is correspondingly arranged in a third step hole 43 of the conical pressing plate 4, a conical pressing plate and cap 12 is correspondingly arranged in a fourth step hole 44, the conical pressing plate and cap 12 is connected with the conical pressing plate 4 through a bolt, the inner diameter of the conical pressing plate and cap 12 is smaller than the outer diameter of the convex ring 51, and the convex ring 51 is clamped in the third step hole 43.
The diameter on the upper portion of screw rod dabber 5 is greater than the diameter of lower part, the center of awl clamp plate and cap 12 is passed on the upper portion of screw rod dabber 5, the upper portion periphery cover of screw rod dabber 5 is equipped with opening clamp plate 7, the bottom of opening clamp plate 7 is equipped with the opening, the bottom opening cover of opening clamp plate 7 is in the outside at the top of awl clamp plate 4, the top of opening clamp plate 7 is equipped with flange nut 6, the upper portion of screw rod dabber 5 is located to flange nut 6 cover, and the screw thread connects soon between the upper portion of flange nut 6 and screw rod dabber 5.
The working principle is as follows: as shown in fig. 3, a product 20 is clamped in a contracted state of a tension 3, a screw mandrel 5 is screwed through positive rotation, the screw mandrel 5 rotates and moves downwards, due to the action of a convex ring 51 in the middle of the screw mandrel 5, a conical pressing plate 4 is pushed to move downwards in a second stepped hole 24 of a conical shaft 2, a pressing conical surface 41 of the conical pressing plate 4 presses a tension sleeve 3 downwards, a conical surface below the tension sleeve 3 moves downwards along a transition conical surface 22 of the conical shaft 2 in the downward pressing process of the tension sleeve 3, the tension sleeve 3 is propped open, the tension sleeve 3 props and fixes a middle hole of the product 20 to achieve the purpose of centering the middle hole of the product 20, and then a flange nut 6 is screwed to enable an opening pressing plate 7 to tightly press a workpiece, so that the clamping and positioning precision of the product is high, and the hole position processing precision of the product is improved; after the drilling processing of the product 20 is completed, the flange nut 6 is loosened, the opening pressing plate 7 is detached, the screw mandrel 5 is reversed, the screw mandrel 5 moves upwards to drive the conical pressing plate and the cap 12 to ascend, so that the conical pressing plate 4 is driven to ascend, the expansion sleeve 3 contracts to return, the fixation of the product 20 is removed, the product 20 can be detached, the product is conveniently clamped and detached, the tensioning type positioning is adopted, the pressing and tightening type clamping is adopted, the product clamping positioning precision is improved, and the product hole position processing precision is improved.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides an internal expanding formula centering boring grab which characterized in that: the device comprises a flange plate, a conical shaft, an expansion sleeve, a conical pressing plate, a screw mandrel, a flange nut and an opening pressing plate;
the flange plate is fixed on the upper plate, the upper plate is supported and fixed on the bottom plate through the stand column, a stepped hole is formed in the center of the flange plate, a conical shaft penetrates through the stepped hole, a round hole is formed in the center of the upper plate, the bottom of the conical shaft extends out of the bottom of the flange plate to be arranged in the round hole of the upper plate, a conical shaft and a conical shaft cap are fixed on the bottom of the flange plate through bolts, the conical shaft and the conical shaft cap are arranged in the round hole of the upper plate, the lower portion of the conical shaft penetrates through a screw hole of the conical shaft and the conical shaft cap, and the lower portion of the conical shaft and the conical shaft cap are fixedly screwed through threads;
a stepped structure corresponding to the stepped hole of the flange plate is arranged outside the conical shaft, the stepped structure of the conical shaft is supported through the stepped hole of the flange plate, and a transition conical surface is arranged between the upper part of the conical shaft and the stepped structure;
an expansion sleeve is sleeved on the periphery of the conical shaft, symmetrical conical surfaces are arranged above and below the inner side of the expansion sleeve, and the conical surface below the inner side of the expansion sleeve is arranged corresponding to the transition conical surface of the conical shaft;
a first step hole is formed below the center of the conical shaft, a second step hole is formed above the first step hole, a conical pressing plate is arranged in the second step hole, the conical pressing plate is of a T-shaped structure, the lower portion of the conical pressing plate is arranged in the second step hole, the top of the conical pressing plate is arranged at the top of the conical shaft, and a downward pressing conical surface corresponding to a conical surface above the inner side of the expanding sleeve is arranged below the outer side surface of the top of the conical pressing plate;
the center of the conical pressing plate is provided with a through hole, the top of the through hole is communicated with a third step hole, the top of the third step hole is communicated with a fourth step hole, the hole diameters of the through hole, the third step hole and the fourth step hole are gradually increased, a screw mandrel is arranged in the conical pressing plate and the conical shaft in a penetrating mode, the lower portion of the screw mandrel is arranged in the through hole in the center of the conical pressing plate and the first step hole in the center of the conical shaft, and the lower portion of the screw mandrel is in threaded connection with the first step hole in the center of the conical shaft;
a convex ring is arranged in the middle of the screw mandrel, the convex ring is correspondingly arranged in a third step hole of the conical pressing plate, a conical pressing plate and cap are correspondingly arranged in a fourth step hole, the conical pressing plate and cap and the conical pressing plate are connected through a bolt, the inner diameter of the conical pressing plate and cap is smaller than the outer diameter of the convex ring, and the convex ring is clamped in the third step hole;
the diameter on the upper portion of screw rod dabber is greater than the diameter of lower part, and the center of awl clamp plate and cap is passed on the upper portion of screw rod dabber, and the upper portion periphery cover of screw rod dabber is equipped with the opening clamp plate, the bottom of opening clamp plate is equipped with the opening, and the bottom opening cover of opening clamp plate is in the outside at the top of awl clamp plate, the top of opening clamp plate is equipped with the flange nut, the upper portion of screw rod dabber is located to the flange nut cover, and the screw thread connects soon between the upper portion of flange nut and screw rod dabber.
2. The internal expanding centering drill jig of claim 1, wherein: the top of upper plate is equipped with the inner groovy, the bottom of ring flange is equipped with the arch, and the arch of ring flange bottom is located and is obtained spacingly in the recess at upper plate top, and passes through bolted connection between ring flange and the upper plate and fix.
3. The internal expanding centering drill jig of claim 1, wherein: the expansion sleeve is provided with a waist-shaped hole, the outer side of the conical shaft is provided with a positioning hole, and the expansion sleeve and the conical shaft are limited in position by the positioning rod penetrating through the waist-shaped hole and the positioning hole.
4. The internal expanding centering drill jig of claim 1, wherein: the connecting part between the top and the lower part of the conical pressing plate is of an arc-shaped structure, and the inner side of the top of the conical shaft is provided with an arc-shaped surface corresponding to the arc-shaped structure.
5. The internal expanding centering drill jig of claim 1, wherein: cushion blocks are distributed on the outer side edge of the top of the flange plate, the cushion blocks are fixed with the flange plate through bolts, fixing screw holes are formed in the cushion blocks, and an arc-shaped groove is formed in the middle of the inner side of each cushion block.
CN202122593790.7U 2021-10-27 2021-10-27 Internal expanding type centering drilling clamp Active CN216461942U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122593790.7U CN216461942U (en) 2021-10-27 2021-10-27 Internal expanding type centering drilling clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122593790.7U CN216461942U (en) 2021-10-27 2021-10-27 Internal expanding type centering drilling clamp

Publications (1)

Publication Number Publication Date
CN216461942U true CN216461942U (en) 2022-05-10

Family

ID=81441828

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122593790.7U Active CN216461942U (en) 2021-10-27 2021-10-27 Internal expanding type centering drilling clamp

Country Status (1)

Country Link
CN (1) CN216461942U (en)

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