阅读说明：本技术 一种轴叉加工夹具 (Shaft fork machining clamp ) 是由 张启斌 邵伯明 尤国金 许雄君 徐顺永 王强 林程峰 方甫金 于 2019-02-20 设计创作，主要内容包括：本发明涉及工装领域,其中公开了一种轴叉加工夹具,包括斜拉式卡盘与用于限定轴叉孔二轴线位置的定位件,将轴叉的卡接槽与抵接板之间嵌设配合,而后相背滑动抵接板,直至抵接板挤压卡接槽内的相对两侧,并将定位轴穿过轴叉的孔二和抵接板上的插接孔,定位轴限定了轴叉中孔二轴线的移动,抵接板限定了轴叉在孔二轴线方向的移动,最后通过相对移动的固定爪加紧固定轴叉在孔二轴线方向的转动,实现对轴叉的准确定位和固定,提升轴叉上孔一与孔二的位置精度。(The invention relates to the field of tools, and discloses a shaft fork machining clamp which comprises a cable-stayed chuck and a positioning piece for limiting the position of a first hole and a second hole of a shaft fork, wherein a clamping groove of the shaft fork and a butt plate are matched in an embedded mode, the butt plate slides in the opposite direction until the butt plate extrudes two opposite sides in the clamping groove, a positioning shaft penetrates through the second hole of the shaft fork and an inserting hole in the butt plate, the positioning shaft limits the movement of the second hole in the shaft fork, the butt plate limits the movement of the shaft fork in the direction of the second hole, and finally the rotation of the shaft fork in the direction of the second hole is fastened through a fixing claw which moves relatively, so that the accurate positioning and fixing of the shaft fork are realized, and the position accuracy of the first hole and the second hole on the shaft fork is improved.)

1. The utility model provides a shaft yoke adds clamping apparatus which characterized in that: the cable-stayed chuck comprises a three-jaw chuck and a positioning piece (5), wherein the cable-stayed chuck (1) comprises a chuck frame (2) and fixing jaws (3) symmetrically arranged at two radial ends of the chuck frame (2), the fixing jaws (3) are arranged on the chuck frame (2) in a sliding manner, and an inclination angle is formed between the sliding direction of the fixing jaws (3) and the axis of the chuck frame (2);

the positioning piece (5) comprises a fixed plate (6) and an abutting plate (7) vertically connected to the fixed plate (6), the fixing plate (6) is fixedly arranged at the center of the chuck frame (2), the fixing plate (6) extends along the direction vertical to the relative movement of the fixing claw (3), the fixed plate (6) is provided with a pair of abutting plates (7), the abutting plates (7) slide oppositely or oppositely along the length direction of the fixed plate (6), and the abutting plates (7) are respectively abutted against the opposite surfaces of the clamping grooves on the shaft fork (15), the abutting plate (7) is provided with an inserting hole (72) along the sliding direction, a positioning shaft (14) matched with the second middle hole (154) of the shaft fork (15) penetrates through the inserting hole (72), and a power assembly (8) for driving the abutting plate (7) to move is arranged on the fixing plate (6).

2. The shaft fork machining clamp of claim 1, wherein: the fixed plate (6) is provided with a dovetail groove (61) along the length direction, and the abutting plate (7) is extended with a dovetail block (71) which is embedded in the dovetail groove (61) in a sliding manner.

3. The shaft fork machining clamp of claim 2, wherein: the power assembly (8) comprises a support rod (10) hinged to the opposite ends of the dovetail blocks (71) and a main push rod (9) perpendicular to the fixing plate (6), a tension spring (11) is arranged in the dovetail groove (61), two ends of the tension spring (11) are fixed to the opposite ends between the dovetail blocks (71) respectively, and one end, far away from the support rod (10), of the main push rod (9) abuts against the positioning shaft (14).

4. The shaft fork machining clamp of claim 3, wherein: the locating block (12) is arranged in the middle of the tension spring (11) in the dovetail groove (61), the screw rod (13) is arranged in the dovetail groove (61), the dovetail ring and the tension spring (11) are sleeved on the screw rod (13) in a sliding mode, and the locating block (12) is in threaded connection with the screw rod (13).

5. The shaft fork machining clamp of claim 3, wherein: one end of the main push rod (9) abutting against the positioning shaft (14) is provided with a guide inclined surface (143), and when the positioning shaft (14) is embedded in the inserting hole (72), the positioning shaft (14) abuts against the guide inclined surface (143) in a sliding mode.

6. The shaft fork machining clamp of claim 5, wherein: the utility model discloses a positioning shaft, including location axle (14), mounting groove (141) have been seted up in the middle of location axle (14), mounting groove (91) have been seted up to the one end of main push rod (9) butt locating lever, be provided with supporting spring (92) and abaculus (93) in mounting groove (91), abaculus (93) part joint in caulking groove (141), just the notch of caulking groove (141) and the both ends that are located location axle (14) circumferencial direction are provided with circular arc chamfer (142).

7. The shaft fork machining clamp of claim 1, wherein: one end of the fixed claw (3) abutted to the shaft fork (15) is provided with a tungsten steel sheet (4), an anti-skid edge (43) is arranged on the tungsten steel sheet (4), and the anti-skid edge (43) is parallel to the axis of the positioning shaft (14).

8. The shaft fork machining clamp of claim 7, wherein: tungsten steel sheet (4) extend towards the one end of stationary dog (3) and have fixed block (41), offer on stationary dog (3) and be used for inlaying draw-in groove (31) of establishing fixed block (41), threaded connection has locking bolt (42) on stationary dog (3), locking bolt (42) one end extends to in draw-in groove (31) and threaded connection on fixed block (41).

Technical Field

The invention relates to the field of tools, in particular to a shaft fork machining clamp.

Background

The shaft fork comprises a main shaft rod and a fork part for fixing one end of the main shaft rod, wherein the fork part comprises a group of fork plates which are symmetrically arranged, a clamping groove is formed between the fork plates, a first hole is formed in the main shaft rod along the axis of the main shaft rod, a second hole is formed in the fork plates, and the axis of the second hole is perpendicular to and intersected with the axis of the first hole.

Disclosure of Invention

The invention aims to provide a shaft fork machining clamp, wherein a positioning shaft fixes the axis position of a second shaft fork hole, a blank is clamped and fixed through a fixing claw, and the position precision between the first machined hole and the second machined hole is improved.

The technical purpose of the invention is realized by the following technical scheme:

a shaft fork machining clamp comprises a three-jaw chuck and a positioning piece, wherein a cable-stayed chuck comprises a chuck frame and fixing jaws symmetrically arranged at two radial ends of the chuck frame, the fixing jaws are arranged on the chuck frame in a sliding mode, and an inclination angle is formed between the sliding direction of the fixing jaws and the axis of the chuck frame;

the setting element includes fixed plate and the butt joint board of perpendicular connection on the fixed plate, the fixed plate is fixed to be set up in the chuck stand center, the fixed plate extends along the direction of perpendicular to stationary dog relative movement, be provided with a pair of on the fixed plate butt joint board, butt joint board slides along the length direction of fixed plate is relative or back of the body mutually, just butt joint board butt respectively on the shaft yoke opposite face in joint groove, the spliced eye has just been seted up along its slip direction on the butt joint board, wear to be equipped with in the spliced eye with two complex location axles in the shaft yoke, be provided with the power component who is used for driving the butt joint board and removes on the fixed plate.

Through adopting above-mentioned technical scheme, inlay between the joint groove of shaft yoke and the butt board and establish the cooperation, then the butt board that slides mutually back of the body, until butt board extrusion joint inslot relative both sides, and pass the jack hole on hole two and the butt board of shaft yoke with the location axle, the removal of shaft yoke mesopore two axes has been injectd to the location axle, the removal of shaft yoke in hole two axes direction has been injectd to the butt board, last fixed claw through relative movement fastens the rotation of fixed shaft yoke in hole two axes direction, realize accurate location and fixed to the shaft yoke, promote the position precision of hole one and hole two on the shaft yoke.

The invention is further configured to: the fixed plate is provided with a dovetail groove along the length direction, and the abutting plate is extended with a dovetail block which is embedded in the dovetail groove in a sliding manner.

Through adopting above-mentioned technical scheme, the forked tail piece slides to inlay and locates in the dovetail, and then inject the relative or back of the body removal between the butt plate, promotes the butt plate butt and inject the stability that the blank removed.

The invention is further configured to: the power assembly comprises a supporting rod and a main push rod, the supporting rod is hinged to the opposite ends of the dovetail blocks respectively, the main push rod is perpendicular to the fixing plate, a tension spring is arranged in the dovetail groove, two ends of the tension spring are fixed to the opposite ends between the dovetail blocks respectively, and one end, far away from the supporting rod, of the main push rod abuts against the positioning shaft.

Through adopting above-mentioned technical scheme, when drive main push rod removed along its axis direction, make branch relative or rotate relatively, changed branch at the weight of forked tail piece slip direction, realize synchronous relative or slip back of the body mutually between the forked tail piece, promote accuracy and convenience to the yoke in hole biaxis direction rigidity, and when the locating shaft inlays to locate in the spliced eye, the one end of fixed plate is kept away from to locating shaft butt main push rod, and then inject main push rod's removal, the predetermined stability of butt plate to the yoke has been promoted.

The invention is further configured to: the locating block is arranged in the dovetail groove and in the middle of the tension spring, the screw rod is arranged in the dovetail groove, the dovetail ring and the tension spring are sleeved on the screw rod in a sliding mode, and the locating block is connected with the screw rod in a threaded mode.

Through adopting above-mentioned technical scheme, be provided with the locating piece in the dovetail, cut the end from the centre with the extension spring, the one end that the extension spring cut off is fixed in the even both sides of locating piece respectively, and be provided with the screw rod in the dovetail, threaded connection between screw rod and the locating piece, when rotating the screw rod, make the locating piece slide in the dovetail, the position of adjustment locating piece on the chuck frame, and then adjust the butt board to the position of shaft yoke in hole two axis directions, reduce the required precision of fixed plate at the chuck frame mounting position, be convenient for improve the position precision between shaft yoke hole one and hole two.

The invention is further configured to: the main push rod is connected with one end of the positioning shaft in a butting mode, a guide inclined plane is arranged at one end, abutted to the positioning shaft, of the main push rod, and when the positioning shaft is embedded in the inserting hole, the positioning shaft is connected with the guide inclined plane in a sliding and butting mode.

Through adopting above-mentioned technical scheme, when establishing the spliced eye with the location axle, location axle slip butt in the guide inclined plane, relative slip between location axle and the guide inclined plane for the removal of butt plate back of the body slip butt injecture blank axis direction when pegging graft the location axle.

The invention is further configured to: the caulking groove has been seted up in the middle of the location axle, the one end of main push rod butt locating lever is provided with has seted up the mounting groove, be provided with supporting spring and abaculus in the mounting groove, abaculus part joint in the caulking groove, just the notch of caulking groove and the both ends that are located location axle circumferencial direction are provided with the circular arc chamfer.

By adopting the technical scheme, when the positioning shaft is inserted, the positioning shaft is in low butt joint with the embedded block to push the embedded block to slide into the mounting groove until the embedded groove is aligned with the mounting groove, the supporting spring pushes the embedded block ejecting part to be clamped in the embedded groove, so that the sliding of the positioning shaft is limited, the positioning stability of the positioning shaft is improved, the positioning shaft is prevented from flying out when the chuck frame rotates, and the positioning stability of the positioning shaft is improved; when needs will fix a position the axle and take out, rotate the location axle, relative slip between abaculus and the circular arc chamfer, the location axle is impressed the abaculus in the mounting groove, and then convenient reduction location axle takes out, the dismantlement of the blank of being convenient for.

The invention is further configured to: the fixing claw is connected with the shaft fork through a fixing shaft, and the fixing claw is connected with the shaft fork through a fixing shaft.

Through adopting above-mentioned technical scheme, be provided with on the tungsten steel sheet that anti-skidding is stupefied, anti-skidding stupefied being on a parallel with the axis of location axle, tungsten steel sheet and anti-skidding are stupefied and have promoted the stability of the fixed blank of stationary dog centre gripping, and then promote processingquality.

The invention is further configured to: the tungsten steel sheet has the fixed block towards the one end extension of stationary dog, set up the draw-in groove that is used for inlaying the fixed block on the stationary dog, threaded connection has locking bolt on the stationary dog, locking bolt one end extends to in the draw-in groove and threaded connection is on the fixed block.

Through adopting above-mentioned technical scheme, rotate the locking bolt, be convenient for realize the dismantlement to the tungsten steel sheet, realize the change of tungsten steel sheet, keep the continuity that the stationary dog was fixed to the blank centre gripping.

In conclusion, the invention has the following beneficial effects:

the joint groove of blank inlays with the butt board and establishes the cooperation, and then the location axle passes hole two and spliced eye in proper order, and location axle butt promotes the main push rod for branch rotates to the butt board extrusion and prescribes a limit to the removal of blank along two axis directions in hole, removes through the stationary dog at last, and the fixed blank of stationary dog centre gripping promotes the axle fork and goes up the position precision after hole one and two processing in hole.

Drawings

FIG. 1 is a schematic view of an assembly of a shaft yoke machining jig;

FIG. 2 is a schematic view of the assembly structure of the positioning member;

FIG. 3 is a schematic view in half section for limiting movement of the positioning shaft;

fig. 4 is a schematic diagram for embodying the shaft yoke structure.

Reference numerals: 1. a cable-stayed chuck; 2. a chuck holder; 3. a fixed jaw; 31. a card slot; 4. a tungsten steel sheet; 41. a fixed block; 42. a locking bolt; 43. anti-skid ridges; 5. a positioning member; 6. a fixing plate; 61. a dovetail groove; 7. a butt joint plate; 71. a dovetail block; 72. inserting holes; 8. a power assembly; 9. a main push rod; 91. mounting grooves; 92. a support spring; 93. an insert block; 10. a strut; 11. a tension spring; 12. positioning blocks; 121. a positioning tube; 13. a screw; 14. positioning the shaft; 141. caulking grooves; 142. chamfering with an arc; 143. a guide ramp; 15. a shaft yoke; 151. a forking plate; 152. a main shaft rod; 153. a first hole; 154. and a second hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a shaft fork processing fixture includes a cable-stayed chuck 1 (referred to as CN 205341973U) and a positioning member 5 for defining the axial position of two holes 154 of a shaft fork 15, wherein the cable-stayed chuck 1 includes a chuck holder 2 and fixing claws 3 symmetrically arranged at two radial ends of the chuck holder 2, the fixing claws 3 include a shaft rod and a butting claw, the shaft rod is slidably arranged in the chuck, and an inclination angle is formed between the sliding direction of the shaft rod and the axial position of the chuck holder 2; on being fixed in setting element 5 with the blank, the axostylus axostyle slides for the butt claw is close to relatively, presss from both sides tight blank until the butt claw, realizes fixing a position and fixed before the blank processing.

As shown in fig. 1 and 2, the positioning member 5 includes a fixing plate 6 fixed to the center of the chuck holder 2, the fixing plate 6 extends in the radial direction of the chuck holder 2, and a dovetail groove 61 is formed in the fixing plate 6, the extending direction of the dovetail groove 61 is perpendicular to the direction of relative movement of the abutting jaws, a pair of abutting plates 7 is provided on the fixing plate 6, the abutting plates 7 are perpendicular to the fixing plate 6, and a dovetail block 71 extends on the abutting plates 7, the dovetail block 71 is slidably fitted in the dovetail groove 61, an insertion hole 72 is formed in the abutting plates 7 in the sliding direction, and the positioning shaft 14 is slidably inserted in the insertion hole 72.

With the joint groove of shaft yoke 15 and the cooperation of establishing between butt plate 7, then the butt plate 7 of sliding back to back of the body, until butt plate 7 extrudees the relative both sides in the joint inslot, and pass hole two 154 of shaft yoke 15 and spliced eye 72 on the butt plate 7 with location axle 14, location axle 14 has injectd the removal of hole two 154 axis in shaft yoke 15, the removal of shaft yoke 15 in hole two 154 axis direction has been injectd to butt plate 7, fix shaft yoke 15 with fastening through relative movement's stationary dog 3 at the rotation of hole two 154 axis direction at last, realize accurate location and fixed to shaft yoke 15, promote the position precision of hole one 153 and hole two 154 on shaft yoke 15.

As shown in fig. 1 and fig. 2, the opposite ends of the dovetail block 71 are respectively hinged with a supporting rod 10, the rotation axis of the supporting rod 10 is perpendicular to the sliding direction of the dovetail block 71, and one end of the supporting rod 10 far away from the dovetail block 71 is provided with a main push rod 9, the main push rod 9 is perpendicular to the fixing plate 6, the supporting rods 10 are respectively hinged with one end of the main push rod 9 near the fixing plate 6, and the main push rod 9 and the supporting rod 10 form a power assembly 8 for driving the dovetail block 71 to move; when the main push rod 9 is driven to move along the axial direction of the main push rod 9, the support rods 10 are enabled to rotate relatively or relatively, the component of the support rods 10 in the sliding direction of the dovetail blocks 71 is changed, synchronous relative or reverse sliding between the dovetail blocks 71 is achieved, the accuracy and convenience of fixing the position of the shaft fork 15 in the axial direction of the second hole 154 are improved, one end, abutted to the positioning shaft 14, of the main push rod 9 is provided with a guide inclined surface 143, when the positioning shaft 14 is embedded in the inserting hole 72, the positioning shaft 14 is abutted to the guide inclined surface 143 in a sliding mode, the positioning shaft 14 and the guide inclined surface 143 slide relatively, and when the positioning shaft 14 is inserted, the abutting plate 7 is abutted to reverse in a sliding mode to limit movement of the blank in the; when the positioning shaft 14 is embedded in the inserting hole 72, the positioning shaft 14 abuts against one end, far away from the fixing plate 6, of the main push rod 9, so that the movement of the main push rod 9 is limited, and the stability of the abutting plate 7 for pre-positioning the shaft fork 15 is improved.

A tension spring 11 is arranged in the dovetail groove 61 and in the middle of the dovetail block 71, the tension spring 11 is fixedly arranged in the positioning block 12 in a penetrating manner, two ends of the tension spring 11 are fixedly connected with the dovetail block 71 respectively, after the shaft yoke 15 is machined, the positioning shaft 14 is drawn out, the tension spring 11 pulls the dovetail block 71 to move relatively, the abutting plate 7 moves relatively to be far away from the shaft yoke 15, and the shaft yoke 15 is convenient to take down from the positioning assembly; and a positioning block 12 is arranged in the dovetail groove 61, the end of the tension spring 11 is cut from the middle, the cut end of the tension spring 11 is respectively fixed on the two sides of the positioning block 12, a screw 13 is arranged in the dovetail groove 61, the screw 13 is in threaded connection with the positioning block 12, the dovetail block 71 is in sliding arrangement with the screw 13, a positioning tube 121 extends from the positioning block 12, the positioning tube 121 is perpendicular to the fixing plate 6, one end of the main push rod 9 close to the fixing plate 6 extends into the positioning tube 121, the positioning tube 121 defines the sliding direction of the main push rod 9, when the screw 13 is rotated, the positioning block 12 is slid in the dovetail groove 61, the position of the positioning block 12 on the chuck holder 2 is adjusted, and further, the position of the abutting plate 7 on the shaft fork 15 in the axial direction of the second hole 154 is adjusted, the precision requirement of the installation position of the fixing plate 6 on the chuck rack 2 is reduced, and the position precision between the first hole 153 and the second hole 154 of the shaft fork 15 is improved conveniently.

As shown in fig. 3, a mounting groove 91 is formed in one end of the main push rod 9 abutting against the positioning shaft 14, an insertion groove 141 opposite to the mounting groove 91 is formed in the positioning shaft 14, a supporting spring 92 and an insertion block 93 are arranged in the mounting groove 91, an abutting inclined surface parallel to the guiding inclined surface is arranged on the insertion block 93, when the positioning shaft 14 is inserted, the positioning shaft 14 abuts against and pushes the insertion block 93 to slide into the mounting groove 91 until the insertion groove 141 is aligned with the mounting groove 91, the supporting spring 92 pushes the ejection part of the insertion block 93 to be clamped in the insertion groove 141, so that the sliding of the positioning shaft 14 is limited, the positioning stability of the positioning shaft 14 is improved, the positioning shaft 14 is prevented from flying out when the chuck holder 2 rotates, and the positioning stability of the positioning shaft 14 is improved; and be provided with circular arc chamfer 142 at the notch of caulking groove 141 and the both ends that are located the main push rod 9 circumferencial direction, when needs take out location axle 14, rotate location axle 14, relative slip between abaculus 93 and circular arc chamfer 142, location axle 14 impresses abaculus 93 in mounting groove 91, and then convenient reduction location axle 14 takes out, the dismantlement of the blank of being convenient for.

As shown in fig. 1 and 2, a tungsten steel sheet 4 is arranged at one end of the fixing claw 3 abutting against the shaft fork 15, an anti-skid ridge 43 is arranged on the tungsten steel sheet 4, the anti-skid ridge 43 is parallel to the axis of the positioning shaft 14, and the tungsten steel sheet 4 and the anti-skid ridge 43 improve the stability of the fixing claw 3 for clamping and fixing a blank, thereby improving the processing quality; and tungsten steel sheet 4 has fixed block 41 towards the one end extension of stationary dog 3, and set up on the stationary dog 3 and be used for inlaying draw-in groove 31 of establishing fixed block 41, and threaded connection has locking bolt 42 on stationary dog 3, and locking bolt 42 one end extends to in draw-in groove 31 and threaded connection is on fixed block 41, through rotating locking bolt 42, be convenient for realize the dismantlement to tungsten steel sheet 4, realize the change of tungsten steel sheet 4, keep stationary dog 3 to the continuity that the blank centre gripping is fixed.

The working principle of the embodiment is as follows:

inlay with the joint groove of blank and butt plate 7 and establish the cooperation, then location axle 14 passes two 154 and spliced eye 72 in proper order, and location axle 14 butt promotes the main push rod 9 for branch 10 rotates to 7 extrusion of butt plate and prescribes a limit to the blank along the removal of two 154 axis directions in hole, moves through stationary dog 3 at last, and the fixed blank of stationary dog 3 centre gripping promotes the position precision after 15 last hole 153 and two 154 processing in hole.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.