CN201455155U

CN201455155U - Spindle device of heavy-duty cold rolling machine tool

Info

Publication number: CN201455155U
Application number: CN200920076056XU
Authority: CN
Inventors: 刘岷; 彭学文
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-10
Filing date: 2009-06-10
Publication date: 2010-05-12
Anticipated expiration: 2019-06-10

Abstract

The utility model provides a spindle device of a heavy-duty cold rolling machine tool, comprising a spindle oil cylinder, a rear spindle base, a spindle and a front spindle base. The spindle device is characterized in that the spindle oil cylinder is connected with the rear spindle base; the rear spindle base is guided by a rear upper pressure plate and a rear lower pressure plate which are fixed on the main sliding block and can slide on the main sliding block; the front spindle base which is arranged on the main sliding block surface is connected with the front upper pressure plate and the front lower pressure plate; a group of bearings are respectively arranged in the front spindle base and the rear spindle base; and the rear-end handle part and the front-end handle part of the spindle are respectively connected with the bearing inner rings arranged in the rear spindle base and the front spindle base. The utility model has the following advantages: as the support axle system is eliminated, the sliding block carries the spindle to directly realize ring rolling feeding, thus greatly simplifying mechanical structure; the span between the front and rear spindles is decreased, thus shortening the spindle size and improving the rigidity of the spindle, reducing the feeding and reversing stroke and leading the structure of the spindle mechanism to be compact; and the bottom surface of the front and rear spindle base moves on the main sliding block and is guided by the upper and lower pressure plates with small space, high precision, large opening and closing stroke and convenient adjustment.

Description

A kind of mandrel device of heavy cold-rolling enlarging machine bed

Technical field

The utility model relates to a kind of mandrel device of heavy cold-rolling enlarging machine bed, particularly long heavy cold-rolling enlarging machine bed of mandrel displacement stroke.

Background technology

Mandrel is a vitals of cold-rolling enlarging machine bed, is also referred to as axle or core roller.In the cold-rolling enlarging machine bed, mandrel be used to the to be shaped internal diameter of cold rolling ring expansion spare, in the cold rolling expansion process of ring, mandrel device need have three basic exercises: rotate, ring is carried out spreading; Feeding makes mandrel be pressed into ring, and the ring internal diameter progressively is shaped and the identical shape of mandrel profile phase, and progressively expands finished size to; Mandrel penetrated in the ring for the treatment of cold rolling before forward and back, cold rolling began, and after cold rolling finished, mandrel was extracted out from the ring that cold rolling is finished, and ring is left the workspace.

Mandrel device commonly used at present all can be realized above-mentioned action, in the common form, cold rolling machine mandrel, spreading wheel shaft, three of supporting shafts are arranged in parallel, mandrel device carries on the synchronous small slide block on rolling wheel seat or the master slider, drives the feed motion that mandrel is finished convergence spreading wheel shaft by bogie wheel; Small slide block has the hole parallel with supporting shaft with the rolling wheel axle synchronously, and back mandrel seat is the plunger form, and it is moving to drive the realization advance and retreat by oil cylinder in the small slide block hole; Forward and backward mandrel seat is built-in with rolling bearing, and forward and backward core sleeve is kept, and the shank of mandrel is fixed in the core sleeve of back, and when mandrel was sent to, oil cylinder drove mandrel and penetrates in the preceding core sleeve, and by preceding mandrel seat location.Stressed very big during mandrel device work, must be used with bogie wheel, the spreading power during work is carried by bogie wheel.On heavy cold-rolling enlarging machine bed, use this form that following shortcoming is arranged:

1) complex structure, the spreading power of heavy cold-rolling enlarging machine bed reaches 500～630kN, and axle system must strengthen, and adopts big-diameter bearing as adopting traditional three to be arranged in parallel and to make that the lathe volume is excessive;

2) core roller forward and back stroke is too big, because the workpiece height of heavy cold-rolling enlarging machine bed processing is between 80～120mm and even 150mm, add the corresponding lengthening of adapter section of mandrel and bogie wheel, cause mandrel length very big, the forward and back stroke is very long, the too big and complex process of the corresponding lengthening of mandrel seat after making, volume with oil cylinder.

The utility model content

The purpose of this utility model is: the mandrel device that the heavy cold-rolling enlarging machine bed of the bigger ring of a kind of suitable working height is provided.

For achieving the above object, adopt following technical scheme to realize: a kind of mandrel device of heavy cold-rolling enlarging machine bed, comprise mandrel cylinder, back mandrel seat, mandrel, preceding mandrel seat, it is characterized in that: described mandrel cylinder links to each other with back mandrel seat, back mandrel seat is by the back top board and the back lower platen guiding that are fixed on the master slider, can on the master slider face, move, place the preceding mandrel seat on the described master slider face to join with preceding top board and preceding lower platen; Before respectively be equipped with one group of bearing in mandrel seat and the back mandrel seat, core back-end's shank is connected with bearing inner ring, and by holding screw, gland is connected and fixed, the built-in bearing inner ring of the front end shank of mandrel and preceding mandrel seat is connected.

Described holding screw is a left-handed screw.

The mandrel seat is equipped with T type groove before described, and T type groove is built-in with the bulb caging bolt.

Described mandrel cylinder is fixed on the master slider.

The utlity model has following advantage: owing to cancelled supporting shaft system, slide block carries mandrel directly realizes rolling over the expansion feeding, so frame for movement is greatly simplified; Forward and backward mandrel seat span reduces, and has improved the rigidity of mandrel thereby the mandrel size is shortened, and has reduced the forward and back stroke, makes the mandrel mechanism compact conformation; Move on the master slider face by upper and lower pressing plate guiding forward and backward mandrel seat bottom surface, and the gap is little, the kinematic accuracy height, and the folding stroke is big, is convenient to adjust.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;

Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1.

Among the figure: the 1-mandrel cylinder; Mandrel seat behind the 2-; The 3-mandrel; Mandrel seat before the 4-; Top board before the 5-; Lower platen before the 6-; The 7-holding screw; The 8-gland; The 9-bearing; 10-bulb caging bolt; The 11-master slider; Top board behind the 12-; Lower platen behind the 13-.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, a kind of mandrel device of heavy cold-rolling enlarging machine bed, comprise mandrel cylinder 1, back mandrel seat 2, mandrel 3, preceding mandrel seat 4, lift-launch is on the master slider 11 of cold rolling machine, it is characterized in that: described mandrel cylinder 1 links to each other with back mandrel seat 2, back mandrel seat 2 is by the back top board 12 and back lower platen 13 guiding that are fixed on the master slider 11, and back mandrel seat 2 and master slider 11 facades drive back mandrel seat 2 forward and back for movingly during core roller oil cylinder 1 forward and back; Preceding top board 5 and preceding lower platen 6 are fixed on preceding mandrel seat 4 on the master slider facade, respectively be equipped with one group of bearing 9 in preceding mandrel seat 4 and the back mandrel seat 2, holding screw 7 is fixed together by the interior ring of gland 8 with mandrel 3 rear end shanks and bearing 9, when mandrel seat 2 advances after mandrel cylinder 1 drives, in the built-in bearing 9 of mandrel seat 4 in the ring, core roller 3 end faces were close to bearing face before the front end shank of mandrel 3 inserted.Before mandrel seat 4 be equipped with T type groove, T type groove is built-in with bulb caging bolt 10, turn caging bolt 10, mandrel seat 4 moves axially along mandrel before can driving, and is used to regulate the axial location of mandrel 3.

The mandrel device of the heavy cold-rolling enlarging machine bed that the utility model provides is only carried out action of mandrel seat forward and back and mandrel revolution action, and feed motion is realized by the carrier master slider of mandrel device, so simple in structure; Its forward and backward mandrel seat and master slider facade contact area are big, can bear very big spreading power; The length of pressing plate is big, is convenient to forward and backward mandrel seat and carries out in a big way adjustment, has very big benefit when adopting short mandrel when the less ring of working height; The mandrel straight cutting reduces core sleeve's link, and can increase mandrel shank diameter in bearing inner ring, helps improving mandrel intensity.

Claims

1. the mandrel device of a heavy cold-rolling enlarging machine bed, comprise mandrel cylinder (1), back mandrel seat (2), mandrel (3), preceding mandrel seat (4), it is characterized in that: described mandrel cylinder (1) links to each other with back mandrel seat (2), back mandrel seat (2) can be moved on master slider (11) face by the back top board (12) and back lower platen (13) guiding that are fixed on the master slider (11); Place the preceding mandrel seat (4) on described master slider (11) face to join with preceding top board (5) and preceding lower platen (6); Respectively be equipped with one group of bearing (9) in mandrel seat (4) and the described back mandrel seat (2) before described, described mandrel (3) rear end shank is connected with ring in the bearing (9), and be connected and fixed by holding screw (7), gland (8), the built-in bearing inner ring of the front end shank of described mandrel (3) and preceding mandrel seat (4) is connected.

2. the mandrel device of heavy according to claim 1 cold-rolling enlarging machine bed, it is characterized in that: described holding screw (7) is a left-handed screw.

3. the mandrel device of heavy according to claim 1 cold-rolling enlarging machine bed is characterized in that: mandrel seat (4) is equipped with T type groove before described, and T type groove is built-in with bulb caging bolt (10).

4. the mandrel device of heavy according to claim 1 cold-rolling enlarging machine bed, it is characterized in that: described mandrel cylinder (1) is fixedlyed connected with described master slider (11).