CN102773739A

CN102773739A - Quick combination clamping device

Info

Publication number: CN102773739A
Application number: CN2012102937999A
Authority: CN
Inventors: 金凯; 程一海; 陆永斌; 尹如
Original assignee: NANJING HEAO ELECTROMECHANICAL EQUIPMENT CO Ltd
Current assignee: NANJING HEAO ELECTROMECHANICAL EQUIPMENT CO Ltd
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2012-11-14
Anticipated expiration: 2032-08-17
Also published as: CN102773739B

Abstract

The invention relates to a quick combination clamping device, belonging to the technical field of a fixture. In the device, a pair of first and second gear shafts are supported below a lofting platform; the center line of the first gear shaft is vertical to the center line of the second gear shaft to form a clamping center; the upper ends of two first gear shafts are fixedly connected with a pair of curve clamping blocks respectively; an eccentric pin is mounted at the upper ends of two second gear shafts respectively; the lofting platform is provided with a pair of butt-clamping blocks; the butt-clamping blocks form a moving pair of a lower gear shaft and form a moving pair of the platform; the first and second gears are meshed with first and second inner gears respectively; the first and second inner gears are coaxially and fixedly connected with first and second worm wheels respectively; and the first and second worm wheels are meshed with first and second worms respectively. In the invention, four points symmetric in pairs are clamped so that the geometric center of an irregular clamped piece is close to the clamping center, and the clamping operation is quick and stable.

Description

The Rapid Combination clamping device

Technical field

The present invention relates to a kind of clamping device of metallurgical sample, especially a kind of Rapid Combination clamping device belongs to the clamp technology field.

Background technology

The check of in good time sampling of metal smelt process need, need clamp machinings such as boring, mill fast this moment with metallurgical sample.Application number is that 200610161362.4 patent of invention discloses a kind of clamping device that mills fast that is applicable to, this device essence is a kind of scroll chuck that can clamp fast, and its shortcoming is that corresponding erose clamping stability is relatively poor.For this reason; Application number is that 200610038342.8 one Chinese patent application discloses a kind of three-jaw clamping device of clamping work pieces fast automatically; The improvements of this device are that three-jaw is the curve piece that the side is shaped on utmost point footpath gradient ramp profile, and the rotating shaft of curve piece is parallel respectively to be supported in the worm gear case, is fixed with coaxial pinion in the rotating shaft respectively; Each pinion and the engagement of same internal gear; Internal gear is rotatable to be supported in the worm gear case, is fixedly connected the worm engaging that worm gear and rotating power source drive with worm gear is coaxial.Because directly changing, the utmost point when the present invention rotates with the curve piece replaces the progressive of transmission three-jaw worm drive; Therefore clamp speeds significantly improves; Owing to replaced traditional three-jaw centering clamping, therefore be fit to the sample of clamping different shape simultaneously with the principle that is similar to the cam clamping.Yet find in practice; When being disposed at, bores when milling under the unit head this clamping device; Because in the clamping length direction during obviously greater than the sample of width; The geometric center of uncontrollable sample is near the Clamping Center, and therefore boring obviously departs from the geometric center of sample often, detects chemical examination after being unfavorable for.

Summary of the invention

The objective of the invention is to: the weak point that exists to above-mentioned prior art through architecture advances, proposes a kind ofly not only can clamp fast, and can make the irregular Rapid Combination clamping device that is held the part geometric center near the Clamping Center.

In order to reach above purpose; Rapid Combination clamping device basic technical scheme of the present invention is: comprise the setting-out table top that is supported on the frame; Said setting-out table top below is through a pair of vertical first gear shaft that has first gear respectively of bearings; And a pair of vertical second gear shaft that has second gear respectively, the line of centres of said two first gear shafts is vertical each other with the line of centres of said two second gear shafts, and the focus of two lines of centres forms the Clamping Center; The setting-out table top is stretched out in the upper end of said two first gear shafts, is connected with a pair of curve grip block about said Clamping Center symmetry respectively; Said setting-out table top is stretched out in the upper end of said two second gear shafts, respectively the setting-up eccentricity pin; Said setting-out table top be equipped with a pair of about said two first gear shaft lines of centres symmetry to fixture block, the opposite end of said two pairs of fixture blocks has jaw respectively, the middle part has chute respectively; Said fixture block is constituted and the moving sets of lower tooth wheel shaft along two first gear shaft line of centres directions through said chute and cam pin, and constitute moving sets along two second gear shaft line of centres directions with said table top; Said two first gears mesh with first internal gear respectively, and said two second gears mesh with secondary annulus respectively; Said first, second internal gear is connected with first, second worm gear is coaxial respectively, first, second worm engaging that said first, second worm gear drives with rotating power source respectively.

During work; Rotating power source starts, when first worm screw drives first worm gear and then drives the rotation of two first gear shafts through first internal gear, and two curve grip block transpositions in the same way; Directly change through the utmost point, fast the irregular metallurgical specimen width direction of clamping elliptical-type both sides; Simultaneously, when second worm screw drives second worm gear and then drives two second gear shafts when rotation through secondary annulus, two cam pins will be under the effect of moving sets, order about two pairs of fixture blocks relatively near, thereby clamping should metallurgy specimen length direction both sides fast.As a result, clamping everywhere of symmetry can make the irregular geometric center that is held part near the Clamping Center in twos, and clamping is rapid, safe.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B revolved sectional view (the setting-out table top does not show) of Fig. 1.

The specific embodiment

Embodiment one

The Rapid Combination clamping device of present embodiment such as Fig. 1 are to shown in Figure 3; Setting-out table top 1 is supported on the frame 10; A pair of first gear---vertical first gear shaft of the 3-1 that cogs---axle 3 (referring to the Fig. 3) that cog that have are respectively supported through upper and lower bearing 2 in setting-out table top 1 below, support a pair of second gear---vertical second gear shaft of lower gear 4-1---the lower tooth wheel shaft 4 (referring to Fig. 2) that has respectively through upper and lower bearing 2 '.Two axle 3 the lines of centres that cog are vertical each other with the line of centres of two lower tooth wheel shafts 4, and the focus of two lines of centres formation Clamping Center O.The vertical push rod 13 that is in transmission connection with lifting drive 12 is equipped with in this Clamping Center.Setting-out table top 1 is stretched out in this two axle upper end of 3 that cogs, and is connected with a pair of curve grip block 5 about Clamping Center O symmetry respectively, and the curve grip block has the curved profile of utmost point footpath gradual change.Setting-out table top 1 is stretched out in the upper end of two lower tooth wheel shafts 4, adorns eccentric block 6-2 respectively with through the hinge of the eccentric pin shaft 6-1 on the spill spin block 6-3 that is connected with it, can make the following moving sets friction that forms littler like this.Setting-out table top 1 be equipped with a pair of about two cog axle 3 lines of centres symmetry to fixture block 6; The opposite end of two pairs of fixture blocks 6 has the jaw of jaw shape respectively; The middle part have respectively with the vertical chute 6-4 of two lower tooth wheel shafts, 4 line of centres directions and with the parallel guiding elongated slot 6-5 of two lower tooth wheel shaft line of centres directions; Thereby make to fixture block 6 through chute 6-4 and eccentric block 6-2 constitute with lower tooth wheel shaft 4 along two cog axle 3 line of centres directions moving sets, and constitute and the moving sets of setting-out table top 1 along two lower tooth wheel shafts, 4 line of centres directions through guiding elongated slot 6-5 and the slide block 6-6 that wherein is fixed on the setting-out table top.Two cog 3-1 respectively with as 16 engagements of the last internal gear of first internal gear, two lower gear 4-1 respectively with following internal gear 15 engagements as secondary annulus.Upper and lower internal gear respectively with upper and lower worm gear 7,9 coaxial being connected as first, second worm gear, upper and lower worm gear 7,9 is upper and lower worm screw 8,11 engagements with first, second rotating power source---first, second worm screw that air motor D1, D2 drive---respectively.

Particularly; The fixing upper and lower end cap 18,14 of ring-type respectively on the frame below the setting-out table top 1; The upper end cylindrical of last internal gear 16 and the endoporus of upper end cover 18 matches and plug-in mounting wherein, the lower end cylindrical of following internal gear 15 and the endoporus of bottom end cover 14 matches and plug-in mounting wherein, and down to have a circle recessed in the upper end of internal gear 15; The lower end of last internal gear 16 has inserts the boss that said circle is recessed and match with it, thereby has constituted the very revolute pair of simple and compact of structure each other.Upper and lower worm gear 7,9 is distinguished glands outside the cylindrical of upper and lower internal gear 16,15, and further locking is fixing by round nut 17.

During use; After controlling the startup of first air motor; Last worm screw drives and goes up worm gear and then drive the two axle rotations in the same way that cog through last internal gear; Two curve grip block transpositions in the same way, its relative utmost point footpath becomes big gradually, and clamping is placed on the irregular metallurgical specimen width of elliptical-type (minor axis) the direction both sides at place, Clamping Center fast.After control second air motor started, following worm screw drove down worm gear and then drives the rotation of two lower tooth wheel shafts through internal gear down, and two cam pins will be through the moving sets effect; Order about two pairs of fixture blocks under the constraint of two compound moving sets; Relatively near, fast clamping should metallurgy specimen length (major axis) direction both sides, thus the clamping everywhere through two, two symmetries; Make the irregular geometric center that is held part near the Clamping Center, rapid, safe with its clamping.First, second air motor can start as required simultaneously or not simultaneously.After the sample completion of processing to be held, control two air motor reverse rotations, unclamp sample, and the control push rod ejects it, change follow-up station over to so that manipulator takes out.

Claims

1. Rapid Combination clamping device; Comprise the setting-out table top that is supported on the frame; It is characterized in that: said setting-out table top below is through a pair of vertical first gear shaft that has first gear respectively of bearings; And a pair of vertical second gear shaft that has second gear respectively, the line of centres of said two first gear shafts is vertical each other with the line of centres of said two second gear shafts, and the focus of two lines of centres forms the Clamping Center; The setting-out table top is stretched out in the upper end of said two first gear shafts, is connected with a pair of curve grip block about said Clamping Center symmetry respectively; Said setting-out table top is stretched out in the upper end of said two second gear shafts, respectively the setting-up eccentricity pin; Said setting-out table top be equipped with a pair of about said two first gear shaft lines of centres symmetry to fixture block, the opposite end of said two pairs of fixture blocks has jaw respectively, the middle part has chute respectively; Said fixture block is constituted and the moving sets of lower tooth wheel shaft along two first gear shaft line of centres directions through said chute and cam pin, and constitute moving sets along two second gear shaft line of centres directions with said table top; Said two first gears mesh with first internal gear respectively, and said two second gears mesh with secondary annulus respectively; Said first, second internal gear is connected with first, second worm gear is coaxial respectively, first, second worm engaging that said first, second worm gear drives with rotating power source respectively.

2. Rapid Combination clamping device according to claim 1; It is characterized in that: the fixing upper and lower end cap of ring-type respectively on the frame below the said setting-out table top; The endoporus of the said upper end cylindrical of going up internal gear and said upper end cover match and plug-in mounting wherein; The lower end cylindrical of said down internal gear and the endoporus of said bottom end cover matches and plug-in mounting wherein; And it is recessed that the said upper end of internal gear down has circle, and said lower end of going up internal gear has inserts the boss that said circle is recessed and match with it, thereby constitutes revolute pair each other.

3. Rapid Combination clamping device according to claim 1 and 2 is characterized in that: said upper and lower worm gear gland respectively locks fixing outside the cylindrical of upper and lower internal gear.

4. Rapid Combination clamping device according to claim 1 and 2 is characterized in that: said eccentric pin shaft hinge dress eccentric block, said to fixture block through chute and eccentric block constitute with the lower tooth wheel shaft along two moving sets of line of centres direction that cog.

5. Rapid Combination clamping device according to claim 4; It is characterized in that: said two pairs of fixture blocks middle part has respectively and the parallel guiding elongated slot of two lower tooth wheel shaft line of centres directions, constitutes and the moving sets of setting-out table top along two lower tooth wheel shaft line of centres directions through said guiding elongated slot and the slide block that wherein is fixed on the setting-out table top.

6. Rapid Combination clamping device according to claim 5 is characterized in that: said jaw to the fixture block opposite end is the jaw shape.

7. Rapid Combination clamping device according to claim 6 is characterized in that: the vertical push rod that is in transmission connection with lifting drive is equipped with in said Clamping Center.