CN214641869U

CN214641869U - A interior positioning mechanism for major axis class parts machining

Info

Publication number: CN214641869U
Application number: CN202120130025.9U
Authority: CN
Inventors: 张超; 柯尊锋
Original assignee: Suzhou Maxsin Machine Tool Co ltd
Current assignee: Suzhou Maxsin Machine Tool Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-11-09
Anticipated expiration: 2031-01-18

Abstract

The utility model discloses an interior positioning mechanism for major axis class parts machining, including main shaft and locating lever, the main shaft front end is equipped with the cavity chuck, and the rear end is equipped with the cavity hydro-cylinder, and the main shaft is the hollow shaft, and the locating lever passes the cavity hydro-cylinder and extends to in the main shaft, is equipped with locking device between cavity hydro-cylinder and the locating lever, and the locating lever can be along axial displacement adjusting its front end face and the distance of main shaft front end face, and locking device is used for locking the axial position of locating lever, can follow the main shaft and make rotary motion after the locating lever axial locking; the positioning rod is hollow, the tail part of the positioning rod is connected with a rotary joint, the rotary joint is kept in a static state when the positioning rod rotates, the rotary joint is communicated with an external water pipe or an external air pipe to supply water or air into the positioning rod, and high-pressure water flow or air flow is sprayed forwards from a nozzle to clean the workpiece installation part; the utility model discloses can be at the axle type work piece of compatible different length of certain limit, and the iron fillings in the convenient effectual clearance main shaft of ability remain.

Description

A interior positioning mechanism for major axis class parts machining

Technical Field

The utility model belongs to the technical field of machining equipment, especially, relate to an interior positioning mechanism for major axis class parts machining.

Background

At present, the clamp for the long shaft parts has the defects of positioning, on one hand, the finished clamp cannot be suitable for the random switching of the positioning of various long shaft parts in a main shaft due to the fact that the long shaft parts are different in specification and size, the problem of inaccurate positioning can be solved only by equipping a corresponding clamp for each specification of the long shaft parts, and frequent replacement of the clamp has the disadvantages of complex operation, low machining efficiency and high error rate during replacement; in addition, iron chips are easily remained at the mounting end of the spindle inner shaft workpiece, and the iron chips cannot be timely cleaned to affect the mounting of the next workpiece.

SUMMERY OF THE UTILITY MODEL

The weak point to prior art, the utility model provides a decide positioning mechanism for major axis class parts machining can solve the compatible problem of different length parts location in the main shaft in the certain limit to and the remaining problem of installation end iron bits in the main shaft.

The technical scheme of the utility model as follows: the utility model provides an interior positioning mechanism for major axis class parts machining, includes main shaft and locating lever, the main shaft front end is equipped with the cavity chuck, and the rear end is equipped with the cavity hydro-cylinder, and the main shaft is the hollow shaft, and the locating lever passes in the cavity hydro-cylinder extends the main shaft, is equipped with locking device between cavity hydro-cylinder and the locating lever, and the locating lever can be followed axial displacement and adjusted its preceding terminal surface and the distance of terminal surface before the main shaft, and locking device is used for locking the axial position of locating lever, can follow the main shaft after the locating lever axial locking and make rotary motion. In the scheme, the positioning rod is preferably a high-precision grinding positioning rod, the front end face of the positioning rod is a positioning face of the workpiece, the contraction positions of the positioning rod and the locking device are adjusted, the distance between the front end face of the positioning rod and the hollow chuck can be shortened or lengthened, and positioning and clamping of long-axis workpieces of different specifications within a certain range are achieved.

Furthermore, the locating rod is hollow inside, a workpiece locating block is arranged at the front end of the locating rod, a nozzle is arranged at the center of the workpiece locating block, a rotary joint is connected to the tail of the locating rod, the rotary joint keeps in a static state when the locating rod rotates, the rotary joint is communicated with an external water pipe or an air pipe to supply water or air into the locating rod, and high-pressure water flow or air flow is sprayed out forwards from the nozzle. Because the iron fillings that the work piece produced in the course of working can be partly detained in the front end intracavity of workpiece surface, hollow chuck and main shaft, can clear up the remaining iron fillings in above-mentioned position department through the nozzle of locating lever front end center department outwards spraying high-pressure liquid stream or air current, in time clear up the machining precision of guarantee work piece that iron fillings can be better.

Furthermore, a hollow pull rod is arranged between the main shaft and the positioning rod, the outer wall of the hollow pull rod is tightly attached to the inner wall of the main shaft, the front end of the hollow pull rod extends into the hollow chuck, the rear end of the hollow pull rod extends into the hollow oil cylinder, the hollow pull rod surrounds the supporting positioning rod, the positioning rod is enabled to be coincided with the rotating axis of the main shaft, and the outer peripheral surface of the workpiece positioning block is abutted to the inner wall of the hollow pull rod. The hollow chuck, the spindle and the hollow oil cylinder are connected and driven through the hollow pull rod, the hollow oil cylinder drives the spindle to rotate, the spindle drives the hollow chuck to rotate, the hollow chuck clamps the workpiece and the hollow pull rod, meanwhile, the hollow pull rod extrudes and hoops the positioning rod at the axis, and the hollow chuck drives the hollow pull rod and the positioning rod to rotate simultaneously.

Furthermore, the outer wall of the locking device is rotatably connected with the hollow oil cylinder, an expansion sleeve is arranged on the inner wall of the locking device, and the locking device locks the axial position of the positioning rod through the expansion sleeve.

Further, the spindle is externally fixed with a sleeve, and the hollow chuck and the hollow oil cylinder are both rotatably connected to the inner wall of the sleeve through a bearing.

Compared with the prior art, the beneficial effects of the utility model are that: 1) the utility model discloses the positioning mechanism compatibility is good, to the axle type part of different length in the certain limit, the utility model discloses can be according to the length adjustment locating lever of work piece the position, after adjusting to suitable position, fix the locating lever through the locking device at rear to reach the function of work piece location, the work piece that the location was accomplished is pressed from both sides tightly through the hollow chuck, namely accomplishes the axial and radially upwards fixing, the precision of follow-up processing is high; 2) the utility model provides a locating lever is well cavity pole, and its afterbody can insert water pipe or trachea, realizes the effect that the center goes out water or gives vent to anger, and high-pressure liquid stream or air current can clean work piece clamping part and the remaining iron fillings of work piece surface, and the cleanliness is high, and clean mode is more convenient.

Drawings

FIG. 1 is a schematic cross-sectional view of an internal positioning mechanism for machining long-axis parts according to the present invention;

FIG. 2 is a left side view of the inner positioning mechanism for machining long shaft parts according to the present invention;

labeled as: the device comprises a main shaft 1, a positioning rod 2, a workpiece positioning block 21, a hollow pull rod 3, a hollow chuck 4, a hollow oil cylinder 5, a locking device 6, an expansion sleeve 61, a rotary joint 7, a sleeve 8 and a bearing 9.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 the utility model discloses interior positioning mechanism for major axis class parts machining, including main shaft 1, cavity chuck 4, cavity hydro-cylinder 5, locating lever 2 and

sleeve

8, 1 front end of main shaft is equipped with cavity chuck 4, and the rear end is equipped with cavity hydro-

cylinder

5, and 1 external fixation of main shaft is equipped with sleeve 8, and cavity chuck 4 and cavity hydro-cylinder 5 all rotate through bearing 9 and connect on the 8 inner walls of sleeve, main shaft 1 is the hollow shaft, and locating lever 2 passes in cavity hydro-cylinder 5 extends main shaft 1.

Be equipped with locking device 6 between cavity hydro-cylinder 5 and locating lever 2, locking device 6 joint is in cavity hydro-cylinder 5, and it is fixed for the axial position of cavity hydro-cylinder 5, and locking device 6 can rotate at cavity hydro-cylinder 5, still be equipped with the bloated cover 61 of Z2 type between locking device 6 and locating lever 2, axial displacement through bloated cover 61 can fixed connection locking device 6 and locating lever 2, and locating lever 2 can drive locking device 6 and rotate simultaneously.

A hollow pull rod 3 is arranged between the main shaft 1 and the positioning rod 2, the outer wall of the hollow pull rod 3 is tightly attached to the inner wall of the main shaft 1, the front end of the hollow pull rod 3 extends into the hollow chuck 4, the rear end of the hollow pull rod 3 extends into the hollow oil cylinder 5, the hollow pull rod 3 surrounds the positioning rod 2 so that the positioning rod 2 is superposed with the rotating axis of the main shaft 1, a workpiece positioning block 21 is arranged at the front end of the positioning rod 2, and the peripheral surface of the workpiece positioning block 21 is abutted to the inner wall of the hollow pull rod 3; the rear end of the hollow pull rod 3 is provided with a rear end face, the positioning rod 2 penetrates through the center of the rear end face, and the hollow pull rod 3 supports the positioning rod 2 through the workpiece positioning block 21 and the rear end face respectively to guarantee concentricity between the positioning rod 2 and the spindle 1.

2 inside hollows of locating lever, work piece locating piece 21 center is equipped with the nozzle, 2 end connection of locating lever has rotary joint 7, rotary joint 7 keeps quiescent condition when locating lever 2 is rotatory, rotary joint 7 intercommunication outside water pipe or trachea, to water supply or air feed in the locating lever 2, high-pressure rivers or air current are spout forward from the nozzle, because the iron fillings that the work piece produced in the course of working can be partly detained on the work piece surface, the front end intracavity of cavity chuck 4 and main shaft 1, nozzle outside injection high-pressure liquid stream or air current through 2 front end centers of locating lever departments can clear up the remaining iron fillings in above-mentioned position department, in time clear up the machining precision of guarantee work piece that iron fillings can be better.

The utility model discloses an application: the positioning rod 2 is axially pulled according to the length of a long shaft workpiece, the positioning rod 2 is adjusted to a proper position and then is fastened with a locking device 6 and the positioning rod 2 through an expansion sleeve 61, the workpiece is inserted into the spindle 1 from the hollow chuck 4 until one end of the workpiece is abutted to the workpiece positioning block 21, the positioning of the workpiece is completed, the hollow chuck 4 is folded inwards and simultaneously clamps the workpiece and the hollow pull rod 3, the hollow cylinder 5 drives the spindle 1 to rotate, the spindle 1 drives the hollow chuck 4 to rotate, the hollow chuck 4 drives the workpiece and the hollow pull rod 3 to rotate, the hollow pull rod 3 drives the positioning rod 2 to rotate, a rotary joint 7 at the tail part of the hollow pull rod 3 keeps still, iron filings are left in a cavity at the front end of the spindle 1 and at a clamping position of the hollow chuck 4 after the processing is completed, the rotary joint 7 introduces high-pressure water flow or air flow into the positioning rod 2, and the water flow or air flow in the positioning rod 2 is sprayed forwards through a nozzle, and cleaning the area for mounting the workpiece.

The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an interior positioning mechanism for major axis class parts machining, includes main shaft and locating lever, its characterized in that: the spindle front end is equipped with the cavity chuck, and the rear end is equipped with the cavity hydro-cylinder, and the spindle is the hollow shaft, and the locating lever passes in the cavity hydro-cylinder extends the spindle, is equipped with locking device between cavity hydro-cylinder and the locating lever, and the locating lever can be followed the axial displacement and adjusted the distance of terminal surface before its preceding terminal surface and the spindle, and locking device is used for locking the axial position of locating lever, can follow the spindle after the locating lever axial locking and make rotary motion.

2. The internal positioning mechanism for long shaft part machining according to claim 1, wherein the internal positioning mechanism comprises: the positioning rod is hollow inside, a workpiece positioning block is arranged at the front end of the positioning rod, a nozzle is arranged at the center of the workpiece positioning block, a rotary joint is connected to the tail of the positioning rod, the rotary joint keeps in a static state when the positioning rod rotates, the rotary joint is communicated with an external water pipe or an air pipe to supply water or air into the positioning rod, and high-pressure water flow or air flow is sprayed out forwards from the nozzle.

3. The internal positioning mechanism for long shaft part machining according to claim 2, wherein the internal positioning mechanism comprises: a hollow pull rod is arranged between the main shaft and the positioning rod, the outer wall of the hollow pull rod is tightly attached to the inner wall of the main shaft, the front end of the hollow pull rod extends into the hollow chuck, the rear end of the hollow pull rod extends into the hollow oil cylinder, the hollow pull rod surrounds the supporting positioning rod, the positioning rod is enabled to be coincided with the rotating axis of the main shaft, and the outer peripheral surface of the workpiece positioning block is abutted to the inner wall of the hollow pull rod.

4. The internal positioning mechanism for long shaft part machining according to claim 1, wherein the internal positioning mechanism comprises: the outer wall of the locking device is rotatably connected with the hollow oil cylinder, the inner wall of the locking device is provided with an expansion sleeve, and the locking device locks the axial position of the positioning rod through the expansion sleeve.

5. The internal positioning mechanism for long shaft part machining according to claim 1, wherein the internal positioning mechanism comprises: the main shaft external fixation is equipped with the sleeve, and cavity chuck and cavity hydro-cylinder all rotate through the bearing and connect on the sleeve inner wall.