CN212598954U

CN212598954U - Special fixture for lathe

Info

Publication number: CN212598954U
Application number: CN202021289230.1U
Authority: CN
Inventors: 甘奕霖; 王勇; 甘雪峰
Original assignee: Liyang Huichang Feed Machinery Co ltd
Current assignee: Liyang Huichang Feed Machinery Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-26
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a special fixture for lathe uses at the technical field of lathe processing equipment, and it includes three-jaw chuck, has all seted up the through-hole on each jack catch of three-jaw chuck, and three-jaw chuck's jack catch is equipped with the sleeve in the through-hole, is equipped with on three-jaw chuck's the jack catch to be used for fixed sleeve's mounting, and sleeve female connection has the double-screw bolt, and the sleeve is close to the one end of three-jaw chuck axis and has seted up the constant head tank, and it has the locating lever to peg graft in the. The utility model discloses the effect that improves machining efficiency has.

Description

Special fixture for lathe

Technical Field

The utility model belongs to the technical field of the technique of lathe processing equipment and specifically relates to a special fixture for lathe is related to.

Background

The three-jaw chuck is a machine tool accessory which clamps and positions a workpiece by utilizing the radial movement of three movable jaws uniformly distributed on a chuck body.

Chinese patent with publication number CN208575276U discloses a three-jaw chuck for lathe that fixity can be excellent, including three-jaw chuck, the fixed slot has been seted up to department's surface in the middle of three-jaw chuck's the upper end, three-jaw chuck's upper end surface evenly is provided with three sliding tray of group, the upper end surface of sliding tray is provided with the jack catch, one side surface of three-jaw chuck is provided with the fixed orifices, one side fixed surface of jack catch installs the connecting plate, one side fixed surface of connecting plate installs the fixed plate, the opposite side outside of connecting plate is provided with pressure sensor, one side fixed surface of pressure sensor installs the bottom plate, the inside of bottom plate is provided with the controller.

The above prior art solutions have the following drawbacks: in the actual process of processing the cylindrical parts with the same size in batches, due to the fact that the lengths of the parts clamped at each time are different, the tool needs to be reset after each clamping, and machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a special fixture for lathe, it has the effect that improves machining efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a lathe special fixture, includes the three-jaw chuck, the through-hole has all been seted up on each jack catch of three-jaw chuck, the jack catch of three-jaw chuck is equipped with the sleeve in the through-hole, be equipped with the mounting that is used for fixed sleeve on the jack catch of three-jaw chuck, sleeve female connection has the double-screw bolt, the constant head tank has been seted up to the sleeve near the one end of three-jaw chuck axis, it has the locating lever to peg graft in the constant head tank, the double-screw bolt is contradicted.

By adopting the technical scheme, an operator moves the positioning rods, adjusts the end parts of the positioning rods to be the same, places the parts in the middle of each clamping jaw and pushes against the positioning rods during clamping, and then enables the clamping jaws to clamp the parts; the mounting makes the sleeve wholly can dismantle the connection, can load and unload according to actual requirement, and is convenient nimble.

The present invention may be further configured in a preferred embodiment as: the mounting includes spacer pin and blanking cover, the inclined hole has been seted up on the jack catch of three-jaw chuck, the one end through-hole of inclined hole is contradicted, the spacing groove that corresponds with the inclined hole is seted up to the sleeve lateral wall, the spacer pin inserts the spacing inslot after passing the inclined hole, the jack catch of three-jaw chuck has seted up heavy groove in inclined hole drill way department, blanking cover threaded connection is in heavy inslot and contradict with the spacer pin.

By adopting the technical scheme, the sleeve is limited in the through hole by the limiting pin, so that the sleeve is fixed; when the sleeve needs to be taken out, an operator firstly unscrews the plug cover and then takes out the limiting pin to be separated from the sleeve, so that the sleeve is simple and convenient.

The present invention may be further configured in a preferred embodiment as: the spacer pin includes first round pin post and second round pin post, first round pin post diameter is less than second round pin post and first round pin post and spacing groove grafting cooperation, the cover is equipped with the spring on the first round pin post, the both ends of spring are contradicted with sleeve and second round pin post respectively, the second round pin post is contradicted with the blanking cover, the spring is in the elastic deformation state.

Through adopting above-mentioned technical scheme, when the operator unscrewed the blanking cover, outside the second round pin post popped out the inclined hole under the elastic thrust of spring, made things convenient for the operator to take out the spacer pin.

The present invention may be further configured in a preferred embodiment as: the sleeve is provided with a positioning block, the clamping jaws of the three-jaw chuck are provided with a positioning frame, and when the positioning block is inserted into the positioning frame, the limiting groove is just opposite to the inclined hole.

By adopting the technical scheme, the positioning block is matched with the positioning frame to position the sleeve, so that the debugging time of an operator during installation is saved.

The present invention may be further configured in a preferred embodiment as: inner hexagonal grooves are formed in the stud and the blocking cover.

Through adopting above-mentioned technical scheme, the hexagon socket provides the basis for the operator uses the hexagonal wrench to rotate double-screw bolt or blanking cover.

The present invention may be further configured in a preferred embodiment as: the positioning block is tightly matched with the positioning frame.

Through adopting above-mentioned technical scheme, played the effect of fixing in advance to the sleeve, reduced the possibility of sleeve displacement.

The present invention may be further configured in a preferred embodiment as: a middle column penetrates through the three-jaw chuck, and each stud is abutted against the middle column.

By adopting the technical scheme, when the hollow part needs to be processed, an operator clamps the part by using the three-jaw chuck, then the middle column penetrates through the part, the stud is screwed to be tightly abutted against the middle column, the interior of the part is reinforced through the middle column, and the possibility of the hollow part being concave or deviated is reduced.

The present invention may be further configured in a preferred embodiment as: and the positioning rod is provided with scale marks.

By adopting the technical scheme, the scale marks provide visual judgment for the extension length of the positioning rod, and the adjustment work of an operator is facilitated.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the time for repeatedly setting the tool during batch processing of the cylindrical parts with the same size is shortened, and the processing efficiency is improved; the sleeve adopts a detachable connection mode, can be selected according to actual processing requirements, and has high flexibility;

2. the limiting pin is automatically ejected out of the inclined hole through the matching of the spring and the first pin column, so that the limiting pin is convenient to take out; the hollow part is reinforced through the middle column, so that the precision of part processing is increased.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic structural diagram for embodying the positioning block and the positioning frame in this embodiment.

Fig. 4 is a schematic structural diagram for embodying the middle column in the present embodiment.

In the figure, 1, a three-jaw chuck; 11. a through hole; 12. a sleeve; 13. a stud; 14. positioning a groove; 15. positioning a rod; 151. scale lines; 16. positioning blocks; 17. a positioning frame; 18. an inner hexagonal groove; 2. a fixing member; 21. a spacing pin; 211. a first pin; 212. a second pin; 213. a spring; 22. blocking the cover; 23. an inclined hole; 24. a limiting groove; 25. sinking a groove; 3. a middle column.

Detailed Description

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

As shown in fig. 1, for the utility model discloses a special fixture for lathe, including three-jaw chuck 1 and sleeve 12, all set up on each jack catch of three-jaw chuck 1 along the radial through-hole 11 that extends of three-jaw chuck 1, sleeve 12 and through-hole 11 one-to-one and plug in through-hole 11, sleeve 12 female connection has double-screw bolt 13.

As shown in fig. 2 and 3, one end of the sleeve 12 close to the axis of the three-jaw chuck 1 extends out of the through hole 11, and the extending end is provided with a through positioning groove 14, the cross section of the positioning groove 14 is rectangular, a positioning rod 15 is inserted in the positioning groove 14, the positioning rod 15 is provided with scale marks 151, the stud 13 is abutted against the positioning rod 15 to fix the positioning rod 15, and the jaws of the three-jaw chuck 1 are provided with fixing pieces 2 for fixing the sleeve 12.

As shown in fig. 2, the fixing member 2 includes a limiting pin 21 and a blocking cover 22, the outer side wall of the clamping jaw of the three-jaw chuck 1 is provided with an inclined hole 23 and a sinking groove 25, one end of the inclined hole 23 extends along the direction close to the through hole 11 and is communicated with the through hole 11, the limiting pin 21 is inserted into the inclined hole 23, the side wall of the sleeve 12 is provided with a limiting groove 24 corresponding to the inclined hole 23 for the insertion of the limiting pin 21, so as to limit the movement of the sleeve 12; the sinking groove 25 is communicated with the orifice of the inclined hole 23, and the blocking cover 22 is screwed in the sinking groove 25 and is abutted against the limit pin 21, so that the limit pin 21 is fixed in the inclined hole 23.

As shown in fig. 2, the stud 13 and the end cap are both provided with an inner hexagonal groove 18 for matching with a hexagonal wrench; one end of the sleeve 12, which is far away from the axis of the three-jaw chuck 1, is provided with a positioning block 16, a positioning frame 17 is arranged on a clamping jaw of the three-jaw chuck 1, the positioning block 16 is inserted into the positioning frame 17 and tightly matched with the positioning block 17, the positioning block 16 is pre-fixed, and the limiting groove 24 is right opposite to the inclined hole 23 at the moment, so that the positioning effect on the sleeve 12 is achieved.

During machining, an operator moves the positioning rods 15 according to machining requirements and enables the moving distances of the positioning rods 15 to be consistent through the scale marks 151, namely, one ends, close to part clamping, of the positioning rods 15 are located at the same position, after the positioning rods 15 are adjusted, the stud 13 is rotated to be abutted against the positioning rods 15, the positioning rods 15 are fixed, a part to be machined is placed between clamping jaws of the three-jaw chuck 1, the part is abutted against the positioning rods 15, the part is positioned, then a wrench is inserted into a fixing hole of the three-jaw chuck 1 to rotate, the clamping jaws are driven to be close to each other to clamp the part, and chip machining is; because the locating rod 15 is limited to one end of the part inserted into the three-jaw chuck 1, the clamping length of each part is kept the same, the lathe machining original point position of the clamped part is also the same, repeated tool setting is not needed, the time is saved, and the part machining efficiency is improved.

As shown in fig. 2, the limiting pin 21 includes a first pin 211 and a second pin 212, the diameter of the first pin 211 is smaller than that of the second pin 212, one end of the first pin 211 is coaxially fixed to the second pin 212, the other end of the first pin 211 is inserted into the limiting groove 24, the first pin 211 is sleeved with a spring 213, one end of the spring 213 abuts against the sidewall of the sleeve 12, the other end of the spring 213 is fixed to the second pin 212, the diameter of the second pin 212 is the same as the inner diameter of the inclined hole 23, the second pin 212 is inserted into the inclined hole 23, and when one end of the second pin 212, which is far away from the first pin 211, is abutted against the end cap, the spring 213 is compressed to generate elastic deformation.

As shown in fig. 2, when the fixing barrel needs to be disassembled, an operator firstly uses a hexagonal wrench to unscrew the blocking cover 22, the end of the second pin 212 automatically pops out of the inclined hole 23 under the elastic thrust of the spring 213, and the operator can disassemble the sleeve 12 after taking out the second pin 212 to separate the first pin 211 from the limiting groove 24, so that the disassembly tool is convenient and fast to meet the processing requirements of different parts.

As shown in fig. 4, the middle column 3 penetrates through the three-jaw chuck 1, and each stud 13 abuts against the middle column 3. When a hollow part is machined, an operator unloads the positioning rod 15, clamps the part by the three-jaw chuck 1, then selects the middle column 3 with a proper size to penetrate into the three-jaw chuck 1 from the inside of the part, screws each stud 13 to abut against the middle column 3, fixes the middle column 3, and then turns, wherein the middle column 3 plays a role in reinforcing the inside of the part, the rigidity of the part is enhanced, and particularly when the part is soft in material, short in integral length and large in cutting force, the middle column 3 reduces the possibility of deformation and abdication of the part, and the machining precision is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a special fixture for lathe, includes three-jaw chuck (1), its characterized in that: through-hole (11) have all been seted up on each jack catch of three-jaw chuck (1), the jack catch of three-jaw chuck (1) is equipped with sleeve (12) in through-hole (11), be equipped with mounting (2) that are used for fixed sleeve (12) on the jack catch of three-jaw chuck (1), sleeve (12) female connection has double-screw bolt (13), sleeve (12) are close to the one end of three-jaw chuck (1) axis and have seted up constant head tank (14), it has locating lever (15) to peg graft in constant head tank (14), double-screw bolt (13) are contradicted with locating lever (15).

2. The jig dedicated for lathe according to claim 1, wherein: mounting (2) include spacer pin (21) and blanking cover (22), inclined hole (23) have been seted up on the jack catch of three-jaw chuck (1), the one end through-hole (11) of inclined hole (23) are contradicted, spacing groove (24) that correspond with inclined hole (23) are seted up to sleeve (12) lateral wall, insert in spacing groove (24) behind spacer pin (21) passing inclined hole (23), the jack catch of three-jaw chuck (1) has seted up heavy groove (25) in inclined hole (23) drill way department, blanking cover (22) threaded connection is in heavy groove (25) and contradict with spacer pin (21).

3. The jig dedicated for lathe according to claim 2, characterized in that: spacing pin (21) are including first round pin post (211) and second round pin post (212), first round pin post (211) diameter is less than second round pin post (212) and first round pin post (211) and spacing groove (24) cooperation of pegging graft, the cover is equipped with spring (213) on first round pin post (211), the both ends of spring (213) are contradicted with sleeve (12) and second round pin post (212) respectively, second round pin post (212) are contradicted with blanking cover (22), spring (213) are in elastic deformation state.

4. The lathe-specific jig according to claim 3, characterized in that: be equipped with locating piece (16) on sleeve (12), be equipped with locating frame (17) on the jack catch of three-jaw chuck (1), when locating piece (16) inserts in locating frame (17), spacing groove (24) are just right with inclined hole (23).

5. The lathe-specific jig according to claim 4, characterized in that: inner hexagonal grooves (18) are formed in the stud (13) and the blocking cover (22).

6. The lathe-specific jig according to claim 4, characterized in that: the positioning block (16) is tightly matched with the positioning frame (17).

7. The jig dedicated for lathe according to claim 1, wherein: a middle column (3) penetrates through the three-jaw chuck (1), and each stud (13) is abutted against the middle column (3).

8. The jig dedicated for lathe according to claim 1, wherein: and scale marks (151) are arranged on the positioning rod (15).