CN204818321U - Positioning fixture that can lock - Google Patents

Abstract

The utility model discloses a positioning fixture that can lock, including the back shaft, seted up two bell mouths on the back shaft, two bell mouths are provided with two location nails, and the free end of two location nails all is equipped with the slippery fellow, all is provided with the regulating block in two bell mouths, is provided with first spout on two regulating blocks, and two slippery fellows of each bell mouth department put into respectively in the two first spouts, be provided with the pivot in the back shaft, another pot head of pivot is equipped with the running wheel, is equipped with the ratchet on the terminal surface of running wheel, is equipped with the stationary magazine creel through the bearing housing in the pivot, has offered the bar opening on the outer section of thick bamboo wall of stationary magazine creel, and the cover is equipped with the regulation pole on the stationary magazine creel inlayer section of thick bamboo wall, adjust linked firmly on the pole can with ratchet complex stop pawl. The utility model discloses a rotate the pivot, can drive the running wheel and take place to rotate, because the cross -section of running wheel is ellipse circular, therefore rotates the in -process at it, then can drive two regulating blocks and take place synchronal reciprocating, and then realize the lift of regulating block between two tooth bases.

Description

The positioning fixture that can lock

Technical field

The utility model relates to Gear Processing field, specifically refers to the positioning fixture that can lock.

Background technology

In the processing technology of gear hobbing, Hobbing belongs to generating, the wheel and rack transmission that can will regard as without back lash.When gear hobbing rotates a circle, be equivalent to tooth bar and move a cutter tooth in normal direction, the continuous transmission of hobboing cutter, just as the tooth bar of an endless at continuous moving.When between hobboing cutter and gear hobbing base in strict accordance with gear when the gearratio positively engaging transmission of tooth bar, the envelope of cutter tooth on a series of position of hobboing cutter just defines the involute profile of workpiece.Along with the vertical feed of hobboing cutter, required involute profile can be gone out by rolling cut.

But in actual mechanical process, usually adopt two or plural tooth base carries out rolling cut, to improve working (machining) efficiency simultaneously.But the fixing impact being easily subject to many factors of gear ring, install as hobboing cutter and misalign, after hobboing cutter sharpening, the radial error of lip surface increases, and fixture produces runout etc., all can affect the machining accuracy of tooth base, increases the scrappage of tooth base.

Utility model content

The purpose of this utility model is to provide the positioning fixture that can lock, and facilitates the tightness of tooth base when rolling cut, and tooth base carries out trace adjustment, reaches the object improving machining accuracy.

The purpose of this utility model is achieved through the following technical solutions:

The positioning fixture that can lock, comprise link and to be fixed on link and the back shaft that arranges of hollow, the outer wall of back shaft has been threaded wheel flange, the sidewall of back shaft offers two corresponding to arrange and the bellmouth that radially successively decreases along back shaft of aperture, two bellmouths are provided with two along correspondence equal on the inwall of back shaft circumference can the locating pin of bellmouth telescopic moving relatively, the free end of two locating pins at each bellmouth place is equipped with the slippery fellow that width is greater than locating pin, the regulating block matched with bellmouth inwall is provided with in two bellmouths, the two side of two regulating blocks is provided with the first chute that the little inner chamber of opening is large, two slippery fellows at each bellmouth place insert in two first chutes respectively accordingly, rotating shaft is provided with in back shaft, one end of rotating shaft is stretched out outside back shaft free end, the other end of rotating shaft is arranged with cross section and is ellipticity and the castor that can act on regulating block, the anchor ring of castor is provided with the second chute, the bottom of two described regulating blocks is all positioned at the second chute, castor is provided with ratchet away from the end face of link, rotating shaft is provided with the stationary magazine creel with double-deck barrel by bearing holder (housing, cover), the outer barrel of stationary magazine creel offers strip gab, stationary magazine creel internal layer barrel is arranged with adjusting rod, adjusting rod is fixed with through strip gab and the pawl that can coordinate with ratchet.

When the utility model uses, first two tooth bases being oppositely arranged and being then set on back shaft, making it to be fixed two tooth bases by rotating wheel flange, until two tooth bases with the center of bellmouth for symmetric points, to be fasteningly symmetricly set on back shaft.The local of regulating block is placed between two tooth bases highlightedly, and two slippery fellows insert in two first chutes accordingly.By to the rolling cut operation of tooth base to complete the production and processing of gear hobbing; In use procedure, due to many factors, two the tooth bases be oppositely arranged there will be certain circular runout and cause its fixed position to offset, and namely need to finely tune tooth base.Rotating shaft, castor can be driven to rotate, and the cross section due to castor is ellipticity, thus in its rotation process, then the moving up and down while that two regulating blocks being driven to occur, and then realize the lifting of regulating block between two tooth bases.Particularly, when the longitudinal end of castor acts on regulating block, regulating block is then positioned at highest order place, now, regulating block utilizes it along the end contact of the male cone (strobilus masculinus) on the two side of back shaft circumference and tooth base and produces opposing compression, fastening dynamics between two tooth bases is increased again, and then reduces the movement deviation of tooth base, reach the object improving gear hobbing process precision.When the rotation along with castor, when its minor axis end acts on regulating block, regulating block is positioned at lowest order place, now, spacing between two finished product gear hobbings reduces gradually, and correspondingly, the fastening dynamics between two finished product gear hobbings reduces gradually, manually can dismantle the gear hobbing of finished product fast, substantially increase the working (machining) efficiency of gear hobbing.And by setting that is foxy and the first chute, regulating block sliding up and down in bellmouth not only can be realized, regulating block also can be avoided to depart from bellmouth moving up and down in process; Also can carry out part location to regulating block simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.By the setting of the second chute, not only can realize coordinating between castor with regulating block, regulating block also can be avoided to depart from castor moving up and down in process.

Due in the process of gear hobbing, two tooth bases can produce compared with the reaction force of great dynamics to regulating block, thus after the position adjustments of regulating block is good, also need this position to lock, avoid regulating block move down and affect the fixation to two tooth bases.In the utility model, be connected, driven by adjusting rod near the direction of link by cylinder or the output of hydraulic cylinder with the end of adjusting rod, like this, pawl then can slowly be inserted in ratchet to realize the braking to castor.Now, even if two tooth bases cause the extruding of larger intensity to regulating block, castor also can not rotate and affect the position of regulating block.So, the utility model reliability of operation is substantially increased.

For ease of the installation of regulating block, further, described regulating block comprises the operate portions that is provided with described first chute and is removably fixed with operate portions and is positioned at the upper cover part above operate portions.In the utility model, upper cover part can be threaded with operate portions, during installation, first rotates upper cover part and makes it depart from operate portions, then slippery fellow inserted in it from the upper end of the first chute, then upper cover part be installed in operate portions.

For ease of rotating shaft and control and regulation block displacement, further, the end that described back shaft is stretched out in affiliated rotating shaft is provided with rotating disc, and rotating disc is provided with graduation apparatus.Because castor is positioned at back shaft, and be unfavorable for observing the matching relationship of itself and regulating block, thus the mark corresponding with position relationship can be engraved on the rotating pan, so, the efficient fine setting to regulating block can be convenient to, make the lifting of regulating block keep stable, and then more flexibly the fastening dynamics between two tooth bases is regulated, ensure the machining accuracy of tooth base.

For realizing the transmission of rotating shaft to castor, further, the junction of described castor and described rotating shaft is provided with flat key.

For realizing the telescopic moving of the relative bellmouth of locating pin, further, also comprise the elastic component be arranged in described back shaft axial wall, described locating pin is arranged in described bellmouth by elastic component.In the utility model, because regulating block matches with the inwall of bellmouth, thus, the cross-sectional width of regulating block also radially successively decreases along back shaft, so, when regulating block moves up and down in process, distance between it and slippery fellow will certainly change, particularly, when regulating block moves, the distance between regulating block and slippery fellow progressively reduces; When regulating block moves down, the distance between regulating block and slippery fellow then progressively increases.By the setting of elastic component, then step down by locating pin or supply foxy corresponding distance to meet the change in location relation between regulating block and slippery fellow.

For improving castor to the sensitivity of regulating block effect, further, the bottom of described regulating block is circular arc.

The utility model compared with prior art, has following advantage and beneficial effect:

1, the utility model passes through rotating shaft, castor can be driven to rotate, and the cross section due to castor is ellipticity, thus in its rotation process, the moving up and down while that two regulating blocks then being driven to occur, and then realize the lifting of regulating block between two tooth bases.

2, in the utility model, be connected, driven by adjusting rod near the direction of link by cylinder or the output of hydraulic cylinder with the end of adjusting rod, like this, pawl then can slowly be inserted in ratchet to realize the braking to castor.Now, even if two tooth bases cause the extruding of larger intensity to regulating block, castor also can not rotate and affect the position of regulating block.So, the utility model reliability of operation is substantially increased.

3, because castor is positioned at back shaft, and be unfavorable for observing the matching relationship of itself and regulating block, thus by the setting of rotating disc and graduation apparatus, the efficient fine setting to regulating block can be convenient to, the lifting of regulating block is made to keep stable, and then more flexibly the fastening dynamics between two tooth bases is regulated, ensure the machining accuracy of tooth base.

4, in the utility model, by setting that is foxy and the first chute, not only can realize regulating block sliding up and down in bellmouth, regulating block also can be avoided to depart from bellmouth moving up and down in process; Also can carry out part location to regulating block simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.By the setting of the second chute, not only can realize coordinating between castor with regulating block, regulating block also can be avoided to depart from castor moving up and down in process.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms a application's part, does not form the restriction to the utility model embodiment.In the accompanying drawings:

Fig. 1 is the structural representation of a positioning fixture specific embodiment of locking described in the utility model;

Fig. 2 is the structural representation of a stationary magazine creel specific embodiment in positioning fixture of locking described in the utility model;

Fig. 3 is the structural representation of a regulating block specific embodiment in positioning fixture of locking described in the utility model;

Fig. 4 is the structural representation of a castor specific embodiment in positioning fixture of locking described in the utility model.

Mark and corresponding parts title in accompanying drawing: 1, adjusting rod, 2, back shaft, 3, wheel flange, 4, tooth base, 5, regulating block, 6, rotating shaft, 7, bellmouth, 8, castor, 9, pawl, 10, rotating disc, 11, flat key, 12, link, 13, ratchet, 14, stationary magazine creel, 15, strip gab, the 16, second chute, 17, locating pin, 18, foxy, the 19, first chute, 20, operate portions, 21, upper cover part, 22, elastic component.

Detailed description of the invention

Clearly understand for making the purpose of this utility model, technical scheme and advantage, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.

Embodiment 1

As shown in Figures 1 to 4, the positioning fixture that can lock, comprise link 12 and to be fixed on link 12 and the back shaft 2 that arranges of hollow, the outer wall of back shaft 2 has been threaded wheel flange 3, the sidewall of back shaft 2 offers two corresponding to arrange and the bellmouth 7 that radially successively decreases along back shaft 2 of aperture, two bellmouths 7 are provided with two along correspondence equal on the inwall of back shaft 2 circumference can the locating pin 17 of bellmouth 7 telescopic moving relatively, the free end of two locating pins 17 at each bellmouth 7 place is equipped with the slippery fellow 18 that width is greater than locating pin 17, the regulating block 5 matched with bellmouth 7 inwall is provided with in two bellmouths 7, the two side of two regulating blocks 5 is provided with the first chute 19 that the little inner chamber of opening is large, two slippery fellows 18 at each bellmouth 7 place insert in two first chutes 19 respectively accordingly, rotating shaft 6 is provided with in back shaft 2, one end of rotating shaft 6 is stretched out outside back shaft 2 free end, the other end of rotating shaft 6 is arranged with cross section and is ellipticity and the castor 8 that can act on regulating block 5, the anchor ring of castor 8 is provided with the second chute 16, the bottom of two described regulating blocks 5 is all positioned at the second chute 16, castor 8 is provided with ratchet 13 away from the end face of link 12, rotating shaft 6 is provided with the stationary magazine creel 14 with double-deck barrel by bearing holder (housing, cover), the outer barrel of stationary magazine creel 14 offers strip gab 15, stationary magazine creel 14 internal layer barrel is arranged with adjusting rod 1, adjusting rod 1 is fixed with through strip gab 15 and the pawl 9 that can coordinate with ratchet 13.

When the utility model uses, first two tooth bases 4 being oppositely arranged and being then set on back shaft 2, making it to be fixed two tooth bases 4 by rotating wheel flange 3, until two tooth bases 4 with the center of bellmouth 7 for symmetric points, to be fasteningly symmetricly set on back shaft 2.The local of regulating block 5 is placed between two tooth bases 4 highlightedly, and two slippery fellows 18 insert in two first chutes 19 accordingly.Link 12 is then fixed on lathe, by the rolling cut operation of tooth base 4 to complete the production and processing of gear hobbing.In use procedure, due to many factors, two the tooth bases 4 be oppositely arranged there will be certain circular runout and cause its fixed position to offset, and namely need to finely tune tooth base 4.Rotating shaft 6, castor 8 can be driven to rotate, and the cross section due to castor 8 is ellipticity, thus in its rotation process, then the moving up and down while that two regulating blocks 5 being driven to occur, and then realize the lifting of regulating block 5 between two tooth bases.Particularly, when the longitudinal end of castor 8 acts on regulating block 5, regulating block 5 is positioned at highest order place, now, regulating block 5 utilizes it along the end contact of the male cone (strobilus masculinus) on the two side of back shaft 2 circumference and tooth base and produces opposing compression, fastening dynamics between two tooth bases is increased again, and then reduces the movement deviation of tooth base, reach the object improving gear hobbing process precision.When the rotation along with castor 8, when its minor axis end acts on regulating block 5, regulating block 5 is positioned at lowest order place, now, spacing between two finished product gear hobbings reduces gradually, and correspondingly, the fastening dynamics between two finished product gear hobbings reduces gradually, manually can dismantle the gear hobbing of finished product fast, substantially increase the working (machining) efficiency of gear hobbing.And by foxy 18 and first setting of chute 19, regulating block 5 sliding up and down in bellmouth 7 not only can be realized, regulating block 5 also can be avoided to depart from bellmouth 7 moving up and down in process; Also can carry out part location to regulating block 5 simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.By the setting of the second chute 16, not only can realize coordinating between castor 8 with regulating block 5, regulating block 5 also can be avoided to depart from castor 8 moving up and down in process.

Due in the process of gear hobbing, two tooth bases can produce reaction force compared with great dynamics to regulating block 5, thus after the position adjustments of regulating block 5 is good, also need this position to lock, avoid regulating block 5 move down and affect the fixation to two tooth bases.In the present embodiment, be connected by cylinder or the output of hydraulic cylinder with the end of adjusting rod 1, driven by adjusting rod 1 near the direction of link 12, like this, pawl 9 can slowly be inserted in ratchet 13 to realize the braking to castor 8.Now, even if two tooth bases cause the extruding of larger intensity to regulating block 5, castor 8 also can not rotate and affect the position of regulating block 5.So, the utility model reliability of operation is substantially increased.

For ease of the installation of regulating block 5, preferably, described regulating block 5 comprises the operate portions 20 that is provided with described first chute 19 and is removably fixed with operate portions 20 and is positioned at the upper cover part 21 above operate portions 20.In the present embodiment, upper cover part 21 can be threaded with operate portions 20, during installation, first rotates upper cover part 21 and makes it depart from operate portions 20, then insert foxy 18 in it from the upper end of the first chute 19, then upper cover part 21 be installed in operate portions 20.

For ease of rotating shaft 6 and control and regulation block 5 displacement, preferably, the end that described back shaft 2 is stretched out in affiliated rotating shaft 6 is provided with rotating disc 10, and rotating disc 10 is provided with graduation apparatus.Because castor 8 is positioned at back shaft 2, and be unfavorable for observing the matching relationship of itself and regulating block 5, thus by engraving the mark corresponding with position relationship on rotating disc 10, so, the efficient fine setting to regulating block 5 can be convenient to, make the lifting of regulating block 5 keep stable, and then more flexibly the fastening dynamics between two tooth bases is regulated, ensure the machining accuracy of tooth base.

For realizing the transmission of rotating shaft 6 pairs of castors 8, preferably, described castor 8 is provided with flat key 11 with the junction of described rotating shaft 6.In the present embodiment, rotating shaft 6 by flat key 11 transmission to castor 8 thus drive castor 8 rotate.

For realizing the telescopic moving of the relative bellmouth 7 of locating pin 17, preferably, also comprise the elastic component 22 be arranged in described back shaft 2 axial wall, described locating pin 17 is arranged in described bellmouth 7 by elastic component 22.In the present embodiment, because the inwall of regulating block 5 with bellmouth 7 matches, thus, the cross-sectional width of regulating block 5 also radially successively decreases along back shaft 2, so, when regulating block 5 moves up and down in process, distance between it and foxy 18 will certainly change, particularly, when regulating block 5 moves, the distance between regulating block 5 and foxy 18 progressively reduces; When regulating block 5 moves down, the distance between regulating block 5 and foxy 18 then progressively increases.By the setting of elastic component 22, then step down by locating pin 17 or supply foxy 18 corresponding distances to meet the change in location relation between regulating block 5 and foxy 18.

For improving the sensitivity that castor 8 pairs of regulating blocks 5 act on, further, the bottom of described regulating block 5 is circular arc.

Above content is the further description done the utility model in conjunction with concrete preferred embodiment, can not assert that detailed description of the invention of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.

Claims (6)

1. the positioning fixture can locked, comprise link (12) and be fixed on link (12) and go up and the back shaft (2) of hollow setting, it is characterized in that: the outer wall of back shaft (2) has been threaded wheel flange (3), the sidewall of back shaft (2) offers two corresponding to arrange and the bellmouth (7) that radially successively decreases along back shaft (2) of aperture, two bellmouths (7) along on the inwall of back shaft (2) circumference all correspondence be provided with two can the locating pin (17) of bellmouth (7) telescopic moving relatively, the free end of two locating pins (17) at each bellmouth (7) place is equipped with the slippery fellow (18) that width is greater than locating pin (17), the regulating block (5) matched with bellmouth (7) inwall is provided with in two bellmouths (7), the two side of two regulating blocks (5) is provided with the first chute (19) that the little inner chamber of opening is large, two slippery fellows (18) at each bellmouth (7) place insert in two first chutes (19) respectively accordingly, rotating shaft (6) is provided with in back shaft (2), one end of rotating shaft (6) is stretched out outside back shaft (2) free end, the other end of rotating shaft (6) is arranged with cross section and is ellipticity and the castor (8) that can act on regulating block (5), the anchor ring of castor (8) is provided with the second chute (16), the bottom of two described regulating blocks (5) is all positioned at the second chute (16), castor (8) is provided with ratchet (13) away from the end face of link (12), rotating shaft (6) is provided with the stationary magazine creel (14) with double-deck barrel by bearing holder (housing, cover), stationary magazine creel (14) outer barrel offers strip gab (15), stationary magazine creel (14) internal layer barrel is arranged with adjusting rod (1), adjusting rod (1) is fixed with through strip gab (15) and the pawl (9) that can coordinate with ratchet (13).

2. positioning fixture of locking according to claim 1, is characterized in that: described regulating block (5) comprises the operate portions (20) that is provided with described first chute (19) and is removably fixed with operate portions (20) and is positioned at the upper cover part (21) of operate portions (20) top.

3. positioning fixture of locking according to claim 1, it is characterized in that: the end that described back shaft (2) is stretched out in affiliated rotating shaft (6) is provided with rotating disc (10), and rotating disc (10) is provided with graduation apparatus.

4. positioning fixture of locking according to claim 1, is characterized in that: described castor (8) is provided with flat key (11) with the junction of described rotating shaft (6).

5. positioning fixture of locking according to claim 1, it is characterized in that: also comprise the elastic component (22) be arranged in described back shaft (2) axial wall, described locating pin (17) is arranged in described bellmouth (7) by elastic component (22).

6. according to the positioning fixture of locking in Claims 1 to 5 described in any one, it is characterized in that: the bottom of described regulating block (5) is circular arc.