CN204308746U - A kind of floating clamp - Google Patents

A kind of floating clamp Download PDF

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Publication number
CN204308746U
CN204308746U CN201420691711.3U CN201420691711U CN204308746U CN 204308746 U CN204308746 U CN 204308746U CN 201420691711 U CN201420691711 U CN 201420691711U CN 204308746 U CN204308746 U CN 204308746U
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CN
China
Prior art keywords
plate
floating clamp
claws
dog plate
slide
Prior art date
Application number
CN201420691711.3U
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Chinese (zh)
Inventor
翁海明
Original Assignee
宁波美德机器人有限公司
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Publication date
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Priority to CN201420691711.3U priority Critical patent/CN204308746U/en
Application granted granted Critical
Publication of CN204308746U publication Critical patent/CN204308746U/en

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Abstract

The utility model provides a kind of floating clamp, belongs to field of mechanical technique.It solve the problem of existing grips weak effect.This floating clamp comprises driving mechanism, dog plate and circumference and is evenly distributed on three claws on dog plate, and driving mechanism can drive three claws to move linearly on dog plate simultaneously, makes three claws inwardly gather or outwards launch.The utility model has advantage that is reasonable in design, good clamping effect.

Description

A kind of floating clamp
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of floating clamp, particularly a kind of floating clamp for cylindrical grinder.
Background technology
Grinding machine is used to carry out grinding to surface of the work, needs to adopt corresponding chuck to be fixed processing object (workpiece), make it to be in correct position, to accept grinding in process.
Chuck also has different types according to the difference of the shape and structure of institute's processing work, and what the grinding for shaft-like workpiece generally adopted is the general chuck such as scroll chuck, chuck.The existing grips effect for grinding machine is general and how employing manually clamps workpiece, and loosening or eccentric phenomenon easily appears in workpiece, thus has influence on the processing of workpiece, causes product quality to go wrong.
In sum, for solving existing deficiency on the chuck structure of cylindrical grinder, need the floating clamp designing a kind of reasonable in design, good clamping effect.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of floating clamp of reasonable in design, good clamping effect.
The purpose of this utility model realizes by following technical proposal: a kind of floating clamp, comprise driving mechanism, dog plate and circumference are evenly distributed on three claws on dog plate, described driving mechanism comprises housing, be movably arranged on the piston plate in housing, what be connected with piston plate helps pull a cart, described piston plate is connected with housing seal and surrounds formation activity shape chamber, the piston ring be connected with housing seal is provided with in the middle part of piston plate, described piston ring is positioned at described movable shape chamber and movable shape chamber is divided into the first air chamber, second air chamber, housing offers respectively with the first air chamber, first air admission hole of the second air chamber UNICOM, second air admission hole, described driving mechanism can drive three claws to move linearly on dog plate simultaneously, three claws are made inwardly to gather or outwards launch.
In above-mentioned a kind of floating clamp, described helping pull a cart coaxially to be arranged with dog plate and part of helping pull a cart stretches in dog plate, in the middle part of dog plate, be equipped with driving shaft and driving shaft successively through dog plate and helping pull a cart, in the middle part of driving shaft, be inserted with top and top part stretch out outside dog plate.
In above-mentioned a kind of floating clamp, each claw includes clamping part and installation portion, the rear end of each clamping part is all connected with corresponding installation portion by spring, the front end of each clamping part all has an arc-shaped curved surface, is provided with around corresponding arc-shaped curved surface and the some auxiliary planes be connected with this arc-shaped curved surface in the front end of each clamping part.
In above-mentioned a kind of floating clamp, dog plate offers and three claws, three chutes one to one, all be movably installed with slide in each chute, each slide is all connected with corresponding claw, and described driving mechanism can drive each slide to move linearly in the chute of correspondence simultaneously.
In above-mentioned a kind of floating clamp, each installation portion all offers at least one row first tooth bar, each slide all offers at least one row second tooth bar be meshed with the first tooth bar on corresponding installation portion.
In above-mentioned a kind of floating clamp, offer on helping pull a cart with three chute one_to_one corresponding and be inclined to set three tracks, the front end of each slide all has a slide block, each slide block all can slippage and the equal symmetry in both sides of each slide block offers two skewed slots in the track of correspondence, be equipped with in the both sides of each track and corresponding two skewed slots two skewbacks one to one, each skewback all can slippage in the skewed slot of correspondence.
In above-mentioned a kind of floating clamp, the height of each skewback near piston plate one end is all less than the height of this skewback away from piston plate one end.
Compared with prior art, the utility model adopts pneumatic mechanism to drive chuck clamping work pieces, easy and simple to handle; On claw, between clamping part and installation portion, the design of spring can be carried out when work pieces process floating and regulates, and further alignment pieces center, makes processing more accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one preferred embodiment.
Fig. 2 is the exploded perspective view of the utility model one preferred embodiment.
Fig. 3 is the part-structure schematic diagram of the utility model one preferred embodiment.
Fig. 4 is the sectional view of the utility model one preferred embodiment.
Fig. 5 is the structural representation of helping pull a cart in the utility model one preferred embodiment.
Fig. 6 is the structural representation of slide in the utility model one preferred embodiment.
Fig. 7 is the structural representation of claw in the utility model one preferred embodiment.
In figure, 10, driving mechanism; 11, housing; 111, the first air admission hole; 112, the second air admission hole; 12, piston plate; 121, piston ring; 13, help pull a cart; 131, track; 1311, skewback; 1312, second step face; 20, dog plate; 21, chute; 22, slide; 221, the second tooth bar; 222, slide block; 2221, skewed slot; 2222, First terrace; 30, claw; 31, clamping part; 311, arc-shaped curved surface; 312, auxiliary plane; 32, installation portion; 321, the first tooth bar; 41, the first air chamber; 42, the second air chamber; 50, driving shaft; 60, top.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1; this floating clamp comprises driving mechanism 10, dog plate 20 and circumference and is evenly distributed on three claws 30 on dog plate 20; driving mechanism 10 can drive three claws 30 to move linearly on dog plate 20 simultaneously, makes three claws 30 inwardly gather or outwards launch.
Preferably, as shown in Figure 2 and Figure 4, driving mechanism 10 comprises housing 11, be movably arranged on the piston plate 12 in housing 11, what be connected with piston plate 12 helps pull a cart 13, piston plate 12 and housing 11 are tightly connected and surround formation activity shape chamber (not shown), the piston ring 121 be tightly connected with housing 11 is provided with in the middle part of piston plate 12, piston ring 121 is positioned at movable shape chamber and movable shape chamber is divided into the first air chamber 41, second air chamber 42, housing 11 offers respectively with the first air chamber 41, first air admission hole 111 of the second air chamber 42 UNICOM, second air admission hole 112.
A kind of floating clamp for cylindrical grinder of the utility model protection, under driving mechanism 10 acts on, three claws 30 of this chuck inwardly gather Automatic-clamping workpiece (not shown) simultaneously, and clamping effect is good and not easily appearance is loosening.After completing relevant processing work to workpiece, still drive the outside expansion simultaneously of three claws 30 automatically to unclamp workpiece by driving mechanism 10, operation is simple, is convenient to widely use.
Structure and the pneumatic cylinder of whole driving mechanism 10 are similar, the setting in movable shape chamber provides a space to the input of gas, the setting of piston ring 121 is then to movable shape chamber is divided into the first air chamber 41, second air chamber 42, when ventilating from the first air admission hole 111 to the first air chamber 41, piston plate 12 is towards the second air chamber 42 slippage, when ventilating from the second air admission hole 112 to the second air chamber 42, piston plate 12 is towards the first air chamber 41 slippage.13 to be connected with piston plate 12 owing to helping pull a cart, therefore when piston plate 12 slippage time, can with 13 slippages together of helping pull a cart.
Piston plate 12 and housing 11 be tightly connected be in order to ensure movable shape chamber except with the first air admission hole 111, second air admission hole 112 UNICOM except not with other space UNICOMs, piston ring 121 and housing 11 are tightly connected, and are in order to ensure the first air chamber 41 and the second air chamber 42 not mutual UNICOM between the two, can not leak gas, so, when ventilating respectively to the first air chamber 41, second air chamber 42, the slipping of piston plate 12 can be made to carry out smoothly.
Further preferably, help pull a cart and 13 to arrange and 13 parts of helping pull a cart stretch in dog plate 20 with dog plate 20 is coaxial, in the middle part of dog plate 20, be equipped with driving shaft 50 and driving shaft 50 successively through dog plate 20 and help pull a cart 13, in the middle part of driving shaft 50, be inserted with top 60 and top 60 parts are stretched out outside dog plate 20.
When three claw 30 clamping work pieces, top 60 prop up workpiece, one end relative with chuck on grinding machine also adopts top 60 to prop up workpiece, now driving shaft 50 rotates, be inconjunction with and help pull a cart 13, piston plate 12, dog plate 20 and three claws 30 rotate together, and then drive workpiece to rotate together, grinding is carried out to workpiece.
Preferably, as shown in Figure 7, each claw 30 includes clamping part 31 and installation portion 32, the rear end of each clamping part 31 is all connected with corresponding installation portion 32 by spring (not shown), the front end of each clamping part 31 all has an arc-shaped curved surface 311, is provided with around corresponding arc-shaped curved surface 311 and the multiple auxiliary planes 312 be connected with this arc-shaped curved surface 311 in the front end of each clamping part 31.
Adopt arc-shaped curved surface 311 can have better clamping effect relative to plane when clamping work pieces, the setting of auxiliary plane 312 provide certain supporting role can to arc-shaped curved surface 311, strengthens the clamping effect to workpiece further.
Cylindrical grinder is located by two top 60 two ends of withstanding workpiece, if grinding machine has top 60 of one end within the workpiece not in the heart, the cylindrical of workpiece and center line will be made to offset, in time rotating, the distance clipping three claw 30 relative centre lines of workpiece is unequal, workpiece center hole bias is larger, and three claws 30 are also larger to the range difference of center line.
Spring is provided with between the clamping part 31 and corresponding installation portion 32 of claw 30, when rotation, three claws 30 will compensate the range difference of claw 30 self to surface of the work according to the offset of workpiece automatically, there is certain floating adjustment, in this process, three claws 30 are clamping work pieces all the time.
Preferably, as shown in Figures 1 to 4, dog plate 20 offers and three claws 30, three chutes 21 one to one, slide 22 is all movably installed with in each chute 21, each slide 22 is all connected with corresponding claw 30, and driving mechanism 10 can drive each slide 22 to move linearly in the chute 21 of correspondence simultaneously.
Further preferably, as shown in Figure 6 and Figure 7, each installation portion 32 all offers at least one row first tooth bar 321, each slide 22 all offers at least one row second tooth bar 221 be meshed with the first tooth bar 321 on corresponding installation portion 32.
The installation portion 32 of each claw 30 is all fixed together with corresponding slide 22 by the first tooth bar 321 and arranging of the second tooth bar 221, when driving mechanism 10 drives three slides 22 to move linearly in three chutes 21 simultaneously, can move together with three claws 30.
In addition, relative position can be changed between first tooth bar 321 and the second tooth bar 221, namely the relative position between claw 30 and slide 22 can be changed, the relative position between claw 30 and slide 22 is adjusted according to the diameter of clamped workpiece, when diameter of work is large, claw 30 radially outwards can be moved a certain distance, when diameter of work hour, claw 30 radially can be moved inward certain distance.
Preferably, as shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, offer with three chute 21 one_to_one corresponding and be inclined to set three tracks 131 helping pull a cart on 13, the front end of each slide 22 all has a slide block 222, each slide block 222 all can slippage and the equal symmetry in both sides of each slide block 222 offers two skewed slots 2221 in the track 131 of correspondence, be equipped with in the both sides of each track 131 and corresponding two skewed slots 2,221 two skewbacks 1311 one to one, each skewback 1311 all can slippage in the skewed slot 2221 of correspondence.
Because three tracks 131 are obliquely installed, the end face of therefore corresponding slide block 222 is also tilt, simultaneously each skewed slot 2221 all has a First terrace 2222 be obliquely installed and each skewback 1311 all has a second step face 1312 be obliquely installed, two First terraces 2222 symmetrical on each slide block 222 just impel the slippage in corresponding track 131 of each slide block 222 with slippage mutual between corresponding two second step faces 1312, make three slides 22 along the radial slippage of dog plate 20, drive three claws 30 to move together further.
It is worth mentioning that, the skewed slot 2221 that each slide block 222 not necessarily only has two symmetries to offer, also symmetry can offer multipair skewed slot 2221, same, also can arrange in the track 131 of each correspondence and multipair skewed slot 2221 multipair skewback 1311 one to one.So, be namely many multipair First terrace 2222 and multipair second step face 1312, being still between each First terrace 2222 and corresponding second step face 1312 can slippage mutually, makes the slippage in the track 131 of correspondence of each slide block 222.In the present embodiment, on each slide block 222, the quantity of skewed slot 2221 is preferably two, and in each track 131, the quantity of skewback 1311 is preferably two.
Further preferably, as shown in Figure 2 and Figure 5, the height of each skewback 1311 near piston plate 12 one end is all less than the height of this skewback 1311 away from piston plate 12 one end.
Such design makes when inputting gas towards the first air chamber 41, piston plate 12 with help pull a cart 13 together towards the second air chamber 42 slippage time, three slides 22 are respectively under the drive of the slide block 222 of correspondence, radially to dog plate 20 center slippage, three claws 30 are gathered, clamping work pieces respectively to dog plate 20 center; When inputting gas towards the second air chamber 42, piston plate 12 with help pull a cart 13 together towards the first air chamber 41 slippage time, three slides 22 respectively under the drive of the slide block 222 of correspondence, radially away from dog plate 20 center, make three claws 30 respectively to outer expansion, unclamp workpiece.
If input gas towards the second air chamber 42 at the beginning, piston plate 12 is with 13 to first air chamber 41 slippages of helping pull a cart, namely 13 are helped pull a cart towards dog plate 20 slippage, now want three slides 22 radially to the words of dog plate 20 center slippage, the size of related components and dog plate 20 and structure all need to change, the phenomenon of touching between parts may be there is in addition, cause clamping work to carry out smoothly, design unreasonable.The height so also just defined near piston plate 12 one end on each skewback 1311 in the present embodiment is all less than the height of this skewback 1311 away from piston plate 12 one end, otherwise inadvisable.
This floating clamp in an initial condition, external high pressure gas is inflated from the first air admission hole 111 to the first air chamber 41, piston plate 12 is with helping pull a cart 13 together towards the second air chamber 42 slippage, three slides 22 are with the slippage in the chute 21 of correspondence respectively of three claws 30, three claws 30 are gathered to dog plate 20 center, clamping work pieces, ensure that gases at high pressure are full of the first air chamber 41 always, namely ensure that chuck is to the clamped condition of workpiece, then whole chuck starts to rotate around center of collet (i.e. the axial line of driving shaft 50) under driving shaft 50 acts on, grinding is carried out to workpiece.After work pieces process completes, chuck stops operating gradually, now, start to fill gases at high pressure (no longer filling gases at high pressure to the first air chamber 41) from the second air admission hole 112 to the second air chamber 42, piston plate 12 is with helping pull a cart 13 together towards the first air chamber 41 slippage, three slides 22 are with three claws 30 away from dog plate 20 center, and outside slippage, unclamps workpiece.Whole operating process is simple, and applicability is wide.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Claims (7)

1. a floating clamp, comprise driving mechanism, dog plate and circumference are evenly distributed on three claws on dog plate, it is characterized in that, described driving mechanism comprises housing, be movably arranged on the piston plate in housing, what be connected with piston plate helps pull a cart, described piston plate is connected with housing seal and surrounds formation activity shape chamber, the piston ring be connected with housing seal is provided with in the middle part of piston plate, described piston ring is positioned at described movable shape chamber and movable shape chamber is divided into the first air chamber, second air chamber, housing offers respectively with the first air chamber, first air admission hole of the second air chamber UNICOM, second air admission hole, described driving mechanism can drive three claws to move linearly on dog plate simultaneously, three claws are made inwardly to gather or outwards launch.
2. a kind of floating clamp according to claim 1, it is characterized in that, described helping pull a cart coaxially to be arranged with dog plate and part of helping pull a cart stretches in dog plate, in the middle part of dog plate, be equipped with driving shaft and driving shaft successively through dog plate and helping pull a cart, in the middle part of driving shaft, be inserted with top and top part stretch out outside dog plate.
3. a kind of floating clamp according to claim 2, it is characterized in that, each claw includes clamping part and installation portion, the rear end of each clamping part is all connected with corresponding installation portion by spring, the front end of each clamping part all has an arc-shaped curved surface, is provided with around corresponding arc-shaped curved surface and the some auxiliary planes be connected with this arc-shaped curved surface in the front end of each clamping part.
4. a kind of floating clamp according to claim 3, it is characterized in that, dog plate offers and three claws, three chutes one to one, all slide is movably installed with in each chute, each slide is all connected with corresponding claw, and described driving mechanism can drive each slide to move linearly in the chute of correspondence simultaneously.
5. a kind of floating clamp according to claim 4, is characterized in that, each installation portion all offers at least one row first tooth bar, each slide all offers at least one row second tooth bar be meshed with the first tooth bar on corresponding installation portion.
6. a kind of floating clamp according to claim 4 or 5, it is characterized in that, offer on helping pull a cart with three chute one_to_one corresponding and be inclined to set three tracks, the front end of each slide all has a slide block, each slide block all can slippage and the equal symmetry in both sides of each slide block offers two skewed slots in the track of correspondence, be equipped with in the both sides of each track and corresponding two skewed slots two skewbacks one to one, each skewback all can slippage in the skewed slot of correspondence.
7. a kind of floating clamp according to claim 6, is characterized in that, the height of each skewback near piston plate one end is all less than the height of this skewback away from piston plate one end.
CN201420691711.3U 2014-11-18 2014-11-18 A kind of floating clamp CN204308746U (en)

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Application Number Priority Date Filing Date Title
CN201420691711.3U CN204308746U (en) 2014-11-18 2014-11-18 A kind of floating clamp

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
CN204308746U true CN204308746U (en) 2015-05-06

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493704A (en) * 2014-11-18 2015-04-08 宁波美德机器人有限公司 Floating clamping head
CN107457700A (en) * 2017-09-30 2017-12-12 湖州铭灏机械有限公司 Water cooling fixture for grinding machine
CN107457699A (en) * 2017-09-30 2017-12-12 湖州铭灏机械有限公司 Compound grinding machine fixture
CN107553325A (en) * 2017-09-30 2018-01-09 湖州铭灏机械有限公司 Water cooling compound grinding machine fixture
CN108202242A (en) * 2016-12-20 2018-06-26 上海电气电站设备有限公司 A kind of clamping tooling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493704A (en) * 2014-11-18 2015-04-08 宁波美德机器人有限公司 Floating clamping head
CN108202242A (en) * 2016-12-20 2018-06-26 上海电气电站设备有限公司 A kind of clamping tooling
CN107457700A (en) * 2017-09-30 2017-12-12 湖州铭灏机械有限公司 Water cooling fixture for grinding machine
CN107457699A (en) * 2017-09-30 2017-12-12 湖州铭灏机械有限公司 Compound grinding machine fixture
CN107553325A (en) * 2017-09-30 2018-01-09 湖州铭灏机械有限公司 Water cooling compound grinding machine fixture

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150506

Termination date: 20161118

CF01 Termination of patent right due to non-payment of annual fee