A kind of numerically controlled lathe with Pneumatic tailstock
Technical field the utility model relates to field of machining, particularly numerically controlled lathe.
The numerically controlled lathe that background technology is applied in the vehicle rear-axle housing manufacturing procedure at present is as shown in Figure 1, comprises lathe bed body (1), rolling center (2), tailstock body (3), handwheel (4), set lever (5) and stationary center (6).This numerically controlled lathe is to make rolling center (2) reach through the manual rotation hand wheel of operator (4) in the turning operation to the axle tube flange face at vehicle rear-axle housing two ends; When arriving suitable position; Lock through set lever (5); Thereby the rear axle housing workpiece is clamped, carry out the two ends cutting of workpiece.Elongated and heavy owing to the rear axle housing workpiece, this just causes operator's loading and unloading labour intensity big, wastes time and energy; And moving rotation hand wheel (4) clamps because workpiece is an armrest, the bad control of clamping force size, excircle of workpiece vibration when causing cutting; Can not guarantee the axle housing machining accuracy; Thereby large quantities of waste products occur, production cost increases, and production efficiency is low.
The purpose of summary of the invention the utility model provides a kind of numerically controlled lathe with Pneumatic tailstock, and this numerically controlled lathe has improved working (machining) efficiency and machining accuracy, reduced percent defective, has created economic benefit.
The purpose of the utility model realizes through following technical scheme: a kind of numerically controlled lathe with Pneumatic tailstock; Comprise lathe bed body, rolling center, tailstock body, cylinder, tracheae, switch and stationary center; It is characterized in that cylinder and tailstock body being connect, control tailstock body by switch and hold out against and unclamp workpiece through jockey.
Said rolling center can rotate with workpiece together in the technique scheme.
Said jockey in the technique scheme comprises Dalian fishplate bar, tube connector, little connecting plate and sleeve pipe, interconnects with bolt, screw respectively, is bound up cylinder and tailstock.
Said tube connector in the technique scheme links into an integrated entity the piston rod of the leading screw of tailstock body and cylinder by being threaded, and the leading screw that is driven tailstock body by the piston rod of cylinder slidably reciprocates.
This numerically controlled lathe has with the advantage of Pneumatic tailstock: 1, improve working (machining) efficiency and machining accuracy; 2, long service life, use are reliable, easy to operate; 3, reduce production and use cost, create economic benefit.
Description of drawings Fig. 1 is the structural representation of the numerically controlled lathe of the existing common tailstock of band.
Fig. 2 is the structural representation of the numerically controlled lathe of band the utility model Pneumatic tailstock.
Fig. 3 is the structural representation of the utility model Pneumatic tailstock of numerically controlled lathe.
Among the figure, lathe bed body (1), rolling center (2), tailstock body (3), handwheel (4), set lever (5), stationary center (6), cylinder (7), tracheae (8), switch (9), Dalian fishplate bar (10), tube connector (11), little connecting plate (12), bolt (13), piston rod (14), sleeve pipe (15), screw (16) and screw mandrel (17).
The specific embodiment is described further the utility model below in conjunction with accompanying drawing and embodiment.
In the present embodiment; The Dalian fishplate bar (10) of Pneumatic tailstock, little connecting plate (12) link together with screw (16) with tailstock body (3) and cylinder (7) respectively; And Dalian fishplate bar (10) leans on bolt (13) to be connected fastening with sleeve pipe (15) with little connecting plate (12); This syndeton was both solid and reliable, had alleviated weight again.It is 125 millimeters of ¢ that the cylinder parameter is selected diameter for use through Practical Calculation, and stroke is 100 millimeters, feeds the compressed air of 0.6-0.8MPa during work, thrust requirements and stroke demand when having guaranteed rolling center (2) clamping work pieces.The piston rod (14) of cylinder (7) and the leading screw (17) of tailstock body (3) are connected by tube connector (11), tube connector (11) one ends and leading screw (17) firm welding, and the other end and piston rod (14) are threaded, and are convenient to dismounting.Leading screw (17) through rotation can free adjustment rolling center (2) fixedly extension elongation satisfy the process requirements of different length workpiece.
Switch among Fig. 2 (9) divides the left, center, right third gear, the piston rod of cylinder is moved to left, stop, moving to right material loading to clamp and unclamp and take off workpiece.In the turning operation, at first adjust leading screw (17) length of tailstock body (3), the position of selected Pneumatic tailstock on the numerically controlled lathe guide rail again, the fixing Pneumatic tailstock of nut below the fastening tailstock according to Workpiece length.Feed the Compressed Gas of 0.6-0.8MPa in the tracheae (8); Move to right with the moving switch (9) of hand-screw rolling center (2) is moved to right; Put into workpiece to be processed, workpiece one end heads in the stationary center (6), and rotary switc (9) moves to left and rolling center (2) moved to left head in the other end of workpiece; With hand turning of work piece on numerically controlled lathe, to confirm the top clamping in two ends.Open lathe working procedure processing work, treat workpiece two ends flange face completion of processing, bolt down procedure moves to right with the moving switch (9) of hand-screw and to unclamp workpiece, takes off finished work with hand and puts into another part processing.
The utility model uses on numerically controlled lathe through the scene, and Operation and maintenance are got up more convenient.Rotate during workpiece turning steadily, centering property is good, and noise is little, adopts pneumatic pinch, and workman's loading and unloading are easy and convenient, and working (machining) efficiency is enhanced about more than once than having common tailstock lathe now, and service life of equipment increases.The workpiece that processes is through check in batches, and dimensional tolerance is in 0.02 millimeter, and axiality is in 0.03 millimeter, and circularity and fineness were than improved in the past greatly, and the each side precision meets the drawing dimensional requirement fully.This Pneumatic tailstock is through long-time inspection during manufacture in enormous quantities, and each parts function is intact, uses reliably stable accuracy.