CN102513557A

CN102513557A - Force measuring tailstock with heat-absorbing deformation function

Info

Publication number: CN102513557A
Application number: CN201110430685XA
Authority: CN
Inventors: 高英贤; 董建军; 颜涛; 刘洋
Original assignee: Dalian Machine Tool (digital) Co Ltd
Current assignee: Dalian Machine Tool (digital) Co Ltd
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2012-06-27

Abstract

The invention discloses a force measuring tailstock with a heat-absorbing deformation function, which comprises a casing, a connection disc at the end of the casing, a tailstock sleeve, a transmission nut, a tailstock spindle, a tip and a transmission shaft connection driving device matched with the transmission nut. A plate-shaped spring mechanism is arranged at the rear end of the tailstock spindle, and bearing axial force exists on the tailstock sleeve and the plate-shaped spring mechanism. A shaft table on the transmission shaft abuts against a sealing gasket on a lateral surface of an oil groove on the connection disc, and the oil tank is communicated with a force meter on the connection disc through an oil hole. Compared with the prior art, the force measuring tailstock has the advantages of being capable of displaying ejecting force on a workpiece from the tip at any time, if the workpiece deforms due to heating in a processing process, the tailstock spindle can generate axial slight moving, so that the ejecting force of the tip cannot be overlarge, ejecting effect of the workpiece is ensured, and processing accuracy of the workpiece is ensured.

Description

Has the dynamometry tailstock that absorbs the thermal deformation function

Technical field

The present invention relates to a kind of lathe and use tailstock, particularly a kind of dynamometry tailstock with absorption thermal deformation function.

Background technology

Existing machine tool comprises the housing that is located on the bed ways with tailstock; In housing, being provided with can axially movable barrel of tail stock with respect to housing; The right-hand member of barrel of tail stock is connected with the transmission screw through adapter sleeve; The right-hand member of the power transmission shaft of joining with the driving wire parent phase stretches out hull outside, and is supported on the casing of drive unit and joins with transmission mechanism in the drive unit; In barrel of tail stock, through bearings the tailstock main shaft is arranged, the front end of tailstock main shaft is furnished with top.During work, move axially through drive device drives barrel of tail stock and inboard tailstock main shaft, reach the purpose that holds workpiece or unclamp workpiece, when workpiece rotated under machine tool chief axis drives, the tailstock main shaft rotated thereupon.The tailstock of this structure can't show the size of top bearing force in the course of the work; Workpiece can produce thermal deformation adding man-hour; Can cause the bearing force increasing of main shaft can not axially produce micro-moving thereupon, can't absorb the thermal deformation of workpiece, influence machining accuracy.

Summary of the invention

The purpose of this invention is to provide a kind of add can absorb man-hour workpiece thermal deformation, tailstock main shaft can have axial microdisplacement, at any time show top bearing force, improve the dynamometry tailstock that absorbs the thermal deformation function that has of workpiece machining accuracy, overcome the deficiency of prior art.

Dynamometry tailstock with absorption thermal deformation function of the present invention; Comprise housing; In housing, being provided with can axially movable barrel of tail stock with respect to housing; The right-hand member of barrel of tail stock is connected with the transmission screw through adapter sleeve, and the right-hand member of the power transmission shaft of joining with the driving wire parent phase stretches out hull outside, and is supported on the casing of drive unit and joins with transmission mechanism in the drive unit; In barrel of tail stock, through bearings the tailstock main shaft is arranged, the front end of tailstock main shaft is furnished with top;

There is pillow block the rear end of tailstock main shaft and is with the inner ring of inner spacing collar, mainshaft rear bearing, cushion cover, axial load bearing, dish spring, sleeve, axial limiting bearing successively, and the right-hand member head thread of tailstock main shaft is connected with locking nut;

The outside that between sleeve and adapter sleeve, is positioned at the axial limiting bearing is set with force transmission ring; The outside at inner spacing collar is set with outer separator; Outer separator one side leans against on the inboard step of barrel of tail stock, opposite side successively with the outer ring of mainshaft rear bearing, be enclosed within cushion cover, axially sleeve pipe, sleeve, force transmission ring, the adapter sleeve in load bearing and the dish spring outside lean;

Right-hand member at housing is fixedly connected with terminal pad, and the right-hand member of described power transmission shaft stretches out from the centre bore of terminal pad, is processed with oilhole on the terminal pad; The dynamometry table that is connected with oilhole is installed on the terminal pad; On the medial surface of terminal pad, be processed with the oil groove that is connected with oilhole, the left side of oil groove is provided with sealing gasket, is provided with transmission ring in the sealing gasket left side; At the power transmission shaft rear portion pillow block is arranged, this pillow block and transmission ring between be provided with transmission ring axial compressive force bearing;

On described barrel of tail stock, be provided with elongated slot, housing is provided with guide finger, and the inner termination of guide finger is inserted in the elongated slot.

Dynamometry tailstock with absorption thermal deformation function of the present invention; Compared with prior art has the advantage that can show top bearing force to workpiece at any time; Can produce moving of axial trace like workpiece temperature distortion tailstock main shaft in the process; Do not cause top bearing force excessive, guaranteed the effect that holds of workpiece, guaranteed machining accuracy.

Description of drawings

Fig. 1 is the structural representation of the specific embodiment of the invention;

Fig. 2 is the local enlarged diagram of tailstock main shaft right part shown in Figure 1.

The specific embodiment

Like Fig. 1, shown in 2: 38 is the housing of tailstock, and the guide rail of housing and lathe matches.

In housing 38, having can axially movable barrel of tail stock 3 with respect to housing 38; Be processed with axial elongated slot 37 on the barrel of tail stock 3; On housing 38, be connected with guide finger 4 through thread connecting mode, the inner termination of guide finger 4 is inserted in the elongated slot 37, when barrel of tail stock 3 endwisely slips with respect to housing 38; Guide finger 4 can carry out radially spacing to barrel of tail stock 3, prevents that barrel of tail stock 3 from rotating.

The right-hand member of barrel of tail stock 3 is connected with transmission screw 23 through bolt 22 and adapter sleeve 12, between transmission screw 23 and the adapter sleeve 12 lock-screw 13 is arranged, and transmission screw 23 is positioned at the endoporus place of adapter sleeve 12.Be furnished with power transmission shaft 17 mutually with transmission screw 23, the right-hand member of power transmission shaft 17 stretches out housing 38 outsides, and is supported on the casing of drive unit 30 and joins with transmission mechanisms in the drive unit 30.

In barrel of tail stock 3, be supported with tailstock main shaft 2 through main spindle front bearing 41 and mainshaft rear bearing 6, the front end of tailstock main shaft 2 is furnished with top 1.Tailstock main shaft 2 and top 1 can rotate in barrel of tail stock 3.The limited cap 43 that is threaded with tailstock main shaft 2 is arranged in the front side of main spindle front bearing 41, be connected with drive end bearing bracket 42 through bolt at the left end head of rack sleeve 3.

There is pillow block the rear end of tailstock main shaft 2 and is with the inner ring of inner spacing collar 18, mainshaft rear bearing 6, cushion cover 7, axial load bearing 8, dish spring 9, sleeve 39, axial limiting bearing 20 successively; The right-hand member head thread of tailstock main shaft 2 is connected with locking nut 11, and hold-down screw 21 is arranged on the locking nut 11.Processing is porose on sleeve 39, is provided with spring 19 and bearing pin 10 in this hole, and the termination of bearing pin 10 leans on axial limiting bearing 20.

The outside that between sleeve 39 and adapter sleeve 12, is positioned at axial limiting bearing 20 is set with force transmission ring 36; Be set with outer separator 5 in the outside of inner spacing collar 18; Outer separator 5 one sides lean against on the inboard step of barrel of tail stock 3, opposite side successively with the outer ring of mainshaft rear bearing 6, be enclosed within cushion cover 7, axially sleeve pipe 40, sleeve 39, force transmission ring 36, the adapter sleeve 12 in load bearing 8 and dish spring 9 outsides lean.

Right-hand member at housing 38 is fixedly connected with terminal pad 25 through terminal pad set bolt 27, and the right-hand member of power transmission shaft 17 stretches out from the centre bore of terminal pad 25, is processed with oilhole 34 on the terminal pad 25, and the dynamometry table 29 that is connected with oilhole 34 is installed on the terminal pad 25.On the medial surface of terminal pad 25, be processed with the oil groove 35 that is connected with oilhole 34; The left side of oil groove 35 is provided with sealing gasket 16, is provided with transmission ring 15 in sealing gasket 16 left sides, at power transmission shaft 17 rear portions pillow block is arranged; Between this pillow block and transmission ring 15, be provided with transmission ring axial compressive force bearing 24; Positioning disk 26 outside the outside of transmission ring 15 is set with, and outer positioning disk 26 joins through trip bolt 14 and terminal pad 25, and the interior positioning disk 28 that is fixedly connected with terminal pad 25 is housed in the inboard of transmission ring 15; Interior positioning disk 28 is pressed to the inside edge of sealing gasket 16, and outer positioning disk 26 is pressed to the outer edge of sealing gasket 16.The right flank of transmission ring 15 is pressed against the left side of oil groove 35 and sealing gasket 16.

During work; Drive power transmission shafts 17 by drive unit 30 and rotate, drive adapter sleeves 12 through the transmission screw 23 that matches with power transmission shaft 17 and be moved to the left, in the moving process; Barrel of tail stock 3 and all inner altogether parts move thereupon; Top 1 begins to hold workpiece, and bearing force is by inner ring, the cushion cover 7 of top 1, tailstock main shaft 2, inner spacing collar 18, mainshaft rear bearing 6, axially load bearing 8, dish spring 9, sleeve 39, terminal pad 12, transmission screw 23, power transmission shaft 17, transmission ring axial compressive force bearing bear, and transmission ring 15 is pressed to sealing gasket 16; Oil in the oil groove 35 is pressed, and makes dynamometry table 29 show top bearing force through oilhole 34.In the process, like the workpiece temperature distortion, tailstock main shaft 2 has microdisplacement to the right, and dish spring 9 is compressed at this moment, and locking nut 11 moves to right with tailstock main shaft 2, and spring 19 leans bearing pin 10 and moves to right, and keeps leaning with axial limiting bearing 20.This tailstock has the workpiece of absorption temperature distortion function and demonstrates top bearing force at any time.

Claims

1. one kind has the dynamometry tailstock that absorbs the thermal deformation function; Comprise housing (38); In housing (38), being provided with can axially movable barrel of tail stock (3) with respect to housing (38); The right-hand member of barrel of tail stock (3) is connected with transmission screw (23) through adapter sleeve (12), and the right-hand member of the power transmission shaft (17) that matches with transmission screw (23) stretches out housing (38) outside, and is supported on the casing of drive unit (30) and joins with transmission mechanism in the drive unit (30); In barrel of tail stock (3), through bearings tailstock main shaft (2) is arranged, the front end of tailstock main shaft (2) is furnished with top (1); It is characterized in that:

There is pillow block the rear end of tailstock main shaft (2) and is with the inner ring of inner spacing collar (18), mainshaft rear bearing (6), cushion cover (7), axial load bearing (8), dish spring (9), sleeve (39), axial limiting bearing (20) successively, and the right-hand member head thread of tailstock main shaft (2) is connected with locking nut (11);

The outside that between sleeve (39) and adapter sleeve (12), is positioned at axial limiting bearing (20) is set with force transmission ring (36); Be set with outer separator (5) in the outside of inner spacing collar (18); Outer separator (5) one sides lean against on the inboard step of barrel of tail stock (3), opposite side successively with the outer ring of mainshaft rear bearing (6), be enclosed within cushion cover (7), axially load bearing (8) leans with sleeve pipe (40), sleeve (39), force transmission ring (36), adapter sleeve (12) outside the dish spring (9);

Right-hand member at housing (38) is fixedly connected with terminal pad (25); The right-hand member of described power transmission shaft (17) stretches out from the centre bore of terminal pad (25); Be processed with oilhole (34) on the terminal pad (25), the dynamometry table (29) that is connected with oilhole (34) is installed on the terminal pad (25), on the medial surface of terminal pad (25), be processed with the oil groove (35) that is connected with oilhole (34); The left side of oil groove (35) is provided with sealing gasket (16); Be provided with transmission ring (15) in sealing gasket (16) left side, pillow block arranged at power transmission shaft (17) rear portion, this pillow block and transmission ring (15) between be provided with transmission ring axial compressive force bearing (24);

On described barrel of tail stock (3), be provided with elongated slot (37), housing (38) is provided with guide finger (4), and the inner termination of guide finger (4) is inserted in the elongated slot (37).