CN105583669A

CN105583669A - Special indexing fixture applied to milling machining for disc cover parts

Info

Publication number: CN105583669A
Application number: CN201610154430.8A
Authority: CN
Inventors: 刘泽刚
Original assignee: Xindu District Dafeng Pengyu Machinery Factory
Current assignee: Xindu District Dafeng Pengyu Machinery Factory
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2016-05-18

Abstract

The invention discloses a special indexing fixture applied to milling machining for disc cover parts, belongs to special fixtures for milling machining in the technical field of machining equipment, and aims at providing a special indexing fixture applied to milling machining for disc cover parts, and with high indexing effect and high indexing accuracy. The technical scheme is as follows: the special indexing fixture comprises a workbench, wherein the workbench comprises a top plate and a bottom plate, and the top plate and the bottom plate are connected through four support columns; a cross-shaped chute is formed in the top plate, and a clamping jaw is arranged in each chute of the cross-shaped chute; a rotary groove is arranged in the bottom plate, and the support columns are connected into the rotary groove in a clamping manner and capable of rotating along the track of the rotary shaft; a plurality of inner indexing lines are uniformly distributed on the top plate around the centre of the top plate, a plurality of outer indexing lines are uniformly distributed on the bottom plate around the centre of the bottom plate, and the number of the inner indexing lines is different from the number of the outer indexing lines; and a clamping jaw drive mechanism used for driving the clamping jaws to move is arranged within the rotary groove of the bottom plate. The invention discloses a special fixture for milling machining.

Description

A kind of calibration special tooling that is applied to Plate-shaped parts Milling Process

Technical field

The invention belongs to machining equipment technical field, relate to a kind of special tooling of Milling Process.

Background technology

Milling Process refers to the multiple-cutting-edge tool cutting workpiece that uses rotation, is efficient processing method. When Milling Process, cutter rotation (doing main motion), workpiece movable (doing feed motion), workpiece also can be fixed, but now the cutter of rotation also must move (completing main motion and feed motion) simultaneously.

Bearing (ball) cover is exactly a kind of common Plate-shaped parts. In prior art, add man-hour when bearing (ball) cover bores milling on lathe, need to use clamp for bearing end cover. General bearing fixture is non-adjustable, can only be applicable to the bearing (ball) cover of single specification, and when the bearing (ball) cover of another kind of specification need to add man-hour, the clamp for bearing end cover that just must more renew, cannot realize the quick-replaceable of fixture. Conventionally while processing a collection of bearing (ball) cover, need to prepare the clamp for bearing end cover of Multiple Type, specification, in a disguised form increase the making amount of clamp for bearing end cover, and a new product of every exploitation all will make a whole set of fixture again, cause the development cost of fixture high, the cycle is long, increased processing cost.

For this reason, application number is that 201220454740.9 invention discloses a kind of end cap and bores milling quick change type clamp, it comprises shell A and the shell B with shell A adaptation, and described shell A and shell B adopt shell that seam is installed and combine, and at furniture switch front end, quick-changing type location key seat are set. In the time of work, quick-changing type location key seat is arranged on the groove of shell A, then by the pin-and-hole of alignment pin alignment housings B, then by pull bar tension and compression centre bore face clamping shell A and shell B, make it to combine.

Existing milling tool is when coiling such part and carry out clamping, and it substantially just clamps or compress coiling such part, realizes the clamping of Plate-shaped parts. But, Plate-shaped parts is in the time carrying out Milling Process, active force between milling cutter and Plate-shaped parts is larger, and it is simple while adopting the mode clamping Plate-shaped parts clamping or compress, active force between fixture and Plate-shaped parts is less, make Plate-shaped parts easily on fixture, produce and slide, or even the fixture that flies out, workman's personal injury caused. And existing Plate-shaped parts is adding man-hour, most of Plate-shaped parts need be on its end face the evenly multiple grooves of milling or hole, thereby need to carry out calibration to Plate-shaped parts, and prior art is to adopt manually to measure calibration carrying out that calibration makes substantially, make the calibration effect of calibration special tooling lower, indexing accuracy is poor.

Summary of the invention

The object of the present invention is to provide the calibration special tooling that is applied to Plate-shaped parts Milling Process that a kind of calibration is effective, indexing accuracy is high.

For achieving the above object, technical scheme of the present invention is:

A calibration special tooling that is applied to Plate-shaped parts Milling Process, comprises workbench, and described workbench comprises top board and base plate, between described top board and base plate, is connected by four support columns; On described top board, offer cross chute, in every chute of described cross chute, be provided with clamp jaw; Described base plate is provided with rotation slot, and described support column is connected in rotation slot and can rotates along the track of rotation slot; On described top board, be evenly equipped with some interior reticules around the center of top board, on described base plate, be evenly equipped with some outer reticules around the center of base plate, and the line number of described interior reticule be different with the line number of outer reticule; Between rotation slot on described base plate, be provided with the claw driving mechanism for driving clamp jaw to move.

Preferably, on described workbench, be provided with two groups of hold down gags, described hold down gag comprises hydraulic unit driver and swing arm, the hydraulic unit driver of two groups of hold down gags lays respectively at left and right or the both sides, front and back of workbench, the output shaft end of described hydraulic unit driver is connected with connecting rod, and the two ends of described connecting rod are all hinged with connecting rod; The swing arm of every group of hold down gag arranges two, and the bottom of two swing arms is articulated with respectively the two ends of workbench side, and the middle part that the other end of the connecting rod at described connecting rod two ends lays respectively at the swing arm of workbench two ends correspondence position is articulated and connected; On workbench, between the swing arm end of a certain side and the swing arm of workbench opposite side corresponding position, be connected with gangbar.

Preferably, described claw driving mechanism is fluid pressure drive device, the position of the corresponding clamp jaw of described fluid pressure drive device arranges four groups, and the output shaft of every group of fluid pressure drive device is connected with the clamp jaw of corresponding position and drives clamp jaw to move along the length direction of chute.

Preferably, described claw driving mechanism comprises drive bevel gear and screw mandrel, described drive bevel gear is installed on base plate and around the axis of drive bevel gear and rotates, described screw mandrel is four groups, every cocainine pole pair answers the position of clamp jaw to arrange, and screw rod bushing is located in the screwed hole of clamp jaw and is threaded with clamp jaw, and the side near drive bevel gear on described screw mandrel is provided with driven wheel of differential, and the driven wheel of differential on four cocainine bars all engages with drive bevel gear.

Compared with prior art, beneficial effect of the present invention is:

In the present invention, offer cross chute on workbench, in every chute of cross chute, be provided with clamp jaw, clamp jaw can slide in chute, realizes the clamping to workpiece, rotation slot is set on base plate, and support column is connected in rotation slot, top board and support column can be rotated on base plate, thereby can carry out Milling Process to the diverse location of Plate-shaped parts, by some interior reticules around its central distribution are set on top board, some outer reticules around its central distribution are set on base plate, and the line number of interior reticule is different from the line number of outer reticule, thereby on top board between adjacent two reticules the represented number of degrees be different from base plate the represented number of degrees between adjacent two outer reticules, thereby the position at its zero graduation line place on base plate while rotating by the poor and top board of these number of degrees, on top board, can calculate with the graduation mark of base plate high scale line the angle that top board rotates, be the accurate calibration of the Plate-shaped parts on top board thereby realize top board, the efficiency of calibration is high, the precision of calibration is high. both sides in the working day arrange hold down gag, the hydraulic unit driver of hold down gag can drive the connecting rod on its output shaft to move up and down, moving up and down of connecting rod is that swing arm rotates by drivening rod, swing arm rotates the gangbar realizing between swing arm is moved up and down above workbench, realizes compression to workpiece, unclamps, this special function can be clamped, compress workpiece by clamp jaw, gangbar, active force between workpiece and special tooling is increased, improve the clamping active force of special tooling to workpiece, effectively prevent that workpiece from sliding on special tooling, or even the special tooling that flies out causes personal injury to user, thereby increase substantially the security performance of special tooling. in addition, for driving the claw driving mechanism that clamp jaw moves to comprise the drive bevel gear that is positioned at center, drive bevel gear be circumferentially with screw mandrel, the position of screw mandrel, the position of quantity and clamp jaw, quantity is suitable, and clamp jaw is set on the screw mandrel of correspondence position, both are threaded in realization, the driven wheel of differential of screw mandrel end engages with drive bevel gear, drive bevel gear is rotated will drive driven wheel of differential, screw mandrel rotates, screw mandrel rotates clamp jaw the moving axially along screw mandrel driving on screw mandrel, thereby realize moving and stepping up or unclamp workpiece of clamp jaw, make many group clamp jaws can realize interlock, improve the mobile efficiency of clamp jaw, can be convenient, efficiently workpiece is carried out to clamping.

Brief description of the drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of workbench in the present invention;

Fig. 3 is the structural representation of hold down gag in the present invention;

Fig. 4 is the structural representation of claw driving mechanism in the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention will be further described:

Be applied to a calibration special tooling for Plate-shaped parts Milling Process, the Plate-shaped parts that this special tooling is mainly used in treating Milling Process carries out clamping. This special tooling comprises workbench 1, and this workbench 1 comprises top board 11 and base plate 12, between this top board 11 and base plate 12, is connected by four support columns 13, and four support columns 13 are positioned at top board 11, base plate 12 four jiaos. On the top board 11 of workbench 1, offer cross chute 14, this cross chute 14 has orthogonal four chutes be intersected in same point and form. In each chute of this cross chute 14, be provided with clamp jaw 3, this clamp jaw 3 can move by the length direction along chute in chute. Movement by clamp jaw 3 can realize the clamping to workpiece. On the end face of this clamp jaw 3, be provided with hierarchic structure, and this hierarchic structure at least arranges two-layer. By on clamp jaw 3, hierarchic structure being set, thereby can clamp the workpiece of different size, shape by the hierarchic structure on this clamp jaw 3. On base plate 12, be provided with circular rotation slot 121, support column 13 for connecting bottom board 12 and top board 11 is connected in this rotation slot 121, and this support column 13 can move at the interior track along rotation slot 121 of rotation slot 121, realize top board 11 and can on base plate 12, rotate. On this top board 11, be evenly equipped with some interior reticules 111, these some interior reticules 111 are centered by top board 11 center and be evenly distributed on top board 11. On this base plate 12, be evenly equipped with some outer reticules 122, if should be by outer reticule 122 centered by base plate 11 center and be evenly distributed on base plate 11. In addition, on top board 11 in the line number of reticule 111 be different from the line number of the upper outside reticule 122 of base plate 12, make on top board 11 between adjacent two interior reticules 111 on the number of degrees of representative and base plate 12 between adjacent two outer reticules 122 number of degrees of representative different. On this base plate 12, be provided with jaw driving device, this jaw driving device is arranged between the rotation slot 121 on base plate 12, and this jaw driving device is mainly used in driving clamp jaw 3 to move.

On workbench, offer cross chute, in every chute of cross chute, be provided with clamp jaw, clamp jaw can slide in chute, realizes the clamping to workpiece, rotation slot is set on base plate, and support column is connected in rotation slot, top board and support column can be rotated on base plate, thereby can carry out Milling Process to the diverse location of Plate-shaped parts, by some interior reticules around its central distribution are set on top board, some outer reticules around its central distribution are set on base plate, and the line number of interior reticule is different from the line number of outer reticule, thereby on top board between adjacent two reticules the represented number of degrees be different from base plate the represented number of degrees between adjacent two outer reticules, thereby the position at its zero graduation line place on base plate while rotating by the poor and top board of these number of degrees, on top board, can calculate with the graduation mark of base plate high scale line the angle that top board rotates, be the accurate calibration of the Plate-shaped parts on top board thereby realize top board, the efficiency of calibration is high, the precision of calibration is high.

Preferred embodiment, on the basis of above-described embodiment, is also provided with two groups of hold down gags 2 on this workbench 1, this compression hold down gag 2 lays respectively at left and right or the both sides, front and back of workbench 1. This hold down gag 2 comprises hydraulic unit driver 21 and swing arm 25, this hydraulic unit driver 21 is arranged at the medium position of workbench 1 side, owing to being provided with two groups of hold down gags 2, thereby just comprise that 21, two hydraulic unit drivers 21 of two hydraulic unit drivers are arranged at respectively on the left and right of working day or the side of both sides, front and back. The output shaft end of this hydraulic unit driver 21 is connected with connecting rod 22, and this connecting rod 22 is parallel with workbench 1, and the medium position of this connecting rod 22 is connected with the output shaft of hydraulic unit driver 21, and drives it to move up and down by the output shaft of hydraulic unit driver 21. The two ends of connecting rod 22 are all hinged with 23, two connecting rods 23 of connecting rod and can on same connecting rod 22, freely rotate around jointed shaft separately. Every group of hold down gag 2 comprises two swing arms 25, the swing arm 25 of same group of hold down gag 2 is positioned at the both sides of workbench 1 same side, and the bottom-hinged of this swing arm 25, on the side of workbench 1, can freely rotate swing arm 25 on the side of workbench 1. On workbench 1, on the middle part of hinged swing arm 25 and connecting rod 22, the end of connecting rod 23 that should swing arm 25 positions is articulated and connected, between the end of swing arm 25 and the swing arm 25 of workbench 1 opposite side corresponding position, is connected with gangbar 26.

On workbench 1, offer cross chute 14, in every chute of cross chute 14, be provided with clamp jaw 3, clamp jaw 3 can slide in chute, realizes the clamping to workpiece; In the both sides of working day, hold down gag 2 is set, the hydraulic unit driver 21 of hold down gag 2 can drive the connecting rod 22 on its output shaft to move up and down, moving up and down of connecting rod 22 is that swing arm 25 rotates by drivening rod 23, swing arm 25 rotates the gangbar 26 realizing between swing arm 25 is moved up and down above workbench 1, realizes compression to workpiece, unclamps; This special function can be clamped, compress workpiece by clamp jaw 3, gangbar 26, active force between workpiece and special tooling is increased, improve the clamping active force of special tooling to workpiece, effectively prevent that workpiece from sliding on special tooling, or even the special tooling that flies out causes personal injury to user, thereby increase substantially the security performance of special tooling.

Preferred embodiment, on the basis of above-described embodiment, above-mentioned claw driving mechanism adopts fluid pressure drive device, and this fluid pressure drive device also arranges four groups, and four groups of corresponding four clamp jaws 3 of fluid pressure drive device arrange. The output shaft of every group of fluid pressure drive device is connected with the clamp jaw of corresponding position 3, and this fluid pressure drive device can drive the clamp jaw 3 of corresponding position to connect and drive clamp jaw 3 to move along the length direction of chute.

Preferred embodiment, on the basis of above-described embodiment, above-mentioned claw driving mechanism adopts the structure of screw mandrel 33 pair of nut, and it comprises drive bevel gear 31 and screw mandrel 33, and this drive bevel gear 31 is arranged on base plate 12, and can on base plate 12, freely rotate. This screw mandrel 33 is set to four groups, and the position of the corresponding clamp jaw 3 of every cocainine bar 33 arranges. Screw mandrel 33 is threaded with the clamp jaw 3 of corresponding position, after the screwed hole that screw mandrel 33 passes on clamp jaw 3, is threaded with clamp jaw 3. Thereby in the time that screw mandrel 33 rotates, the clamp jaw 3 on this screw mandrel 33 will move along the axis of screw mandrel 33 on screw mandrel 33. A side near drive bevel gear 31 on every rhizoid bar 33 is provided with driven wheel of differential 32, and behind 90 ° of four driven wheels of differential, 32 spaces on four cocainine bars 33,, along the circumferential setting of drive bevel gear 31, and four driven wheels of differential 32 all engage with drive bevel gear 31.

For driving the claw driving mechanism that clamp jaw 3 moves to comprise the drive bevel gear 31 that is positioned at center, drive bevel gear 31 be circumferentially with screw mandrel 33, the position of screw mandrel 33, the position of quantity and clamp jaw 3, quantity is suitable, and clamp jaw 3 is set on the screw mandrel 33 of correspondence position, both are threaded in realization, the driven wheel of differential 32 of screw mandrel 33 ends engages with drive bevel gear 31, drive bevel gear 31 is rotated and will be driven driven wheel of differential 32, screw mandrel 33 rotates, screw mandrel 33 rotates clamp jaw 3 the moving axially along screw mandrel 33 driving on screw mandrel 33, thereby realize moving and stepping up or unclamp workpiece of clamp jaw 3, make many group clamp jaws 3 can realize interlock, improve the mobile efficiency of clamp jaw 3, can be convenient, efficiently workpiece is carried out to clamping.

Claims

1. one kind is applied to the calibration special tooling of Plate-shaped parts Milling Process, comprise workbench (1), it is characterized in that: described workbench (1) comprises top board (11) and base plate (12), between described top board (11) and base plate (12), be connected by four support columns (13); On described top board (11), offer cross chute (14), in every chute of described cross chute (14), be provided with clamp jaw (3); Described base plate (12) is provided with rotation slot (121), and described support column (13) is connected in rotation slot (121) and can rotates along the track of rotation slot (121); Described top board (11) is upper is evenly equipped with some interior reticules (111) around the center of top board (11), described base plate (12) is upper is evenly equipped with some outer reticules (122) around the center of base plate (12), and the line number of described interior reticule (111) is different from the line number of outer reticule (122); Between rotation slot (121) on described base plate (12), be provided with for driving the mobile claw driving mechanism of clamp jaw (3).

2. a kind of calibration special tooling that is applied to Plate-shaped parts Milling Process as claimed in claim 1, it is characterized in that: on described workbench (1), be provided with two groups of hold down gags (2), described hold down gag (2) comprises hydraulic unit driver (21) and swing arm (25), the hydraulic unit driver (21) of two groups of hold down gags (2) lays respectively at left and right or the both sides, front and back of workbench (1), the output shaft end of described hydraulic unit driver (21) is connected with connecting rod (22), and the two ends of described connecting rod (22) are all hinged with connecting rod (23); The swing arm (25) of every group of hold down gag (2) arranges two, and the bottom of two swing arms (25) is articulated with respectively the two ends of certain side of workbench (1), the other end of the connecting rod (23) at described connecting rod (22) two ends is articulated and connected with the middle part of the swing arm (25) that is positioned at workbench (1) two ends correspondence position respectively; Between upper swing arm (25) end of a certain side of workbench (1) and the swing arm (25) of workbench (1) opposite side corresponding position, be connected with gangbar (26).

3. a kind of calibration special tooling that is applied to Plate-shaped parts Milling Process as claimed in claim 1, it is characterized in that: described claw driving mechanism is fluid pressure drive device, the position of the corresponding clamp jaw of described fluid pressure drive device (3) arranges four groups, and the output shaft of every group of fluid pressure drive device is connected with the clamp jaw of corresponding position (3) and drives clamp jaw (3) to move along the length direction of chute.

4. a kind of calibration special tooling that is applied to Plate-shaped parts Milling Process as claimed in claim 1, it is characterized in that: described claw driving mechanism comprises drive bevel gear (31) and screw mandrel (33), described drive bevel gear (31) is installed on base plate (12) above and rotates around the axis of drive bevel gear (31), described screw mandrel (33) is four groups, the position of the corresponding clamp jaw of every cocainine bar (33) (3) arranges, and screw mandrel (33) is set in the screwed hole of clamp jaw (3) and is threaded with clamp jaw (3), the upper side near drive bevel gear (31) of described screw mandrel (33) is provided with driven wheel of differential (32), driven wheel of differential (32) on four cocainine bars (33) all engages with drive bevel gear (31).