CN204075271U - The pneumatic core clamping device that rises of lathe - Google Patents

Abstract

The utility model discloses the pneumatic core clamping device that rises of a kind of lathe, comprise the clamp system set gradually in the horizontal direction, holder, cylinder holder and driving mechanism, cylinder holder is vertically arranged and holder and driving mechanism are separately fixed at its both sides, holder is horizontal hollow structure and its inside is located in a rotating actuator Tibetan, rotating actuator passes cylinder holder and clamp system is fixedly connected with by rotating actuator with driving mechanism, by interlock effect by drive unit pull rotating actuator so that drive clamp system to workpiece complete clamping and unclamp operation, the utility model adopts pneumatic alternative manually the tighting a bolt of core clamping of rising to clamp, and structure is simple, easy to operate, with low cost, reduce labour intensity, and clamping process is stablized controlled, substantially reduce the time of lathe process clamping, improve the production efficiency of lathe.

Description

The pneumatic core clamping device that rises of lathe

Technical field

The utility model relates to a kind of pneumatic core clamping device that rises for lathe.

Background technology

Lathe is mainly used in lathe tool carries out turnery processing lathe to the workpiece rotated, lathe can also be processed accordingly with drill bit, reamer, dumpling cutter, screw tap, screw die and checkering tool etc., lathe can be processed quickly and easily to various workpieces, during lathe process workpiece, need to clamp workpiece.

Generally use three-jaw positioning clamping when old technique clamps workpiece, because batch workpiece is large, during original three-jaw location, Vehicle Processing rotating speed is slow, and the time of a clamping workpiece is long, and production efficiency is low; Meanwhile, easily wear and tear in the clamping process of three-jaw location, and self-centering precision is not high, three-jaw cantilever is long assemble with workpiece after dynamic balancing bad, and after Reusability is changed, be easy to wear and tear, the coaxiality of inner hole of processing can be caused not reach drawing requirement; In the process of clamping, three-jaw opening force is wayward easily causes the not clamping or distortion of workpiece.

The core mechanism that rises is common mechanism in jig Design, its objective is to make processing work locate, and has certain clamping action; What domestic and international colleague was conventional at present is that centering machine has spring ringfeder, slide block, hydraulic pressure plastics etc., conical or three wedge shape pull bars are adopted in slide block, slide column type mechanism, with the conical surface or voussoir spreading traveller, its dimension is all in radial direction, workpiece is tightly attached on locating surface, thus makes the workpiece accuracy of processing higher; Such as, in water pump cover Tutrning Process, need to position clamping with bearing position benchmark and complete Vehicle Processing, adopt engine lathe C6136, C6140 car water pump cover at present, main shaft tie-plate on lathe is utilized to fix elastic expanding core fixture, by the spreading collet that manually tights a bolt.

In existing technology, when lathe carries out workpiece turning, great majority operation is all bore to open a bolt hole on the sidewall of cutting clamp, then adjusting bolt is manually adopted, carry out compression operation, such operating procedure is too complicated, adopts and manually tightens clamping, the clamping time is large compared with long, that labor strength large, the reliability of Work-sheet pressing is subject to workman's mood impact, affects production efficiency.

Utility model content

Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, thering is provided a kind of adopts pneumatic core clamping of rising to substitute the clamping device manually tighted a bolt, this clamping device structure is simple, easy to operate, with low cost, reduce labour intensity, and clamping process is stablized controlled, substantially reduce the time of lathe process clamping, improve the production efficiency of lathe.

In order to solve above technical problem, the utility model provides a kind of lathe the pneumatic core clamping device that rises, comprise the clamp system, holder, cylinder holder and the driving mechanism that set gradually in the horizontal direction, cylinder holder is vertically arranged and holder and driving mechanism are separately fixed at its both sides, holder is horizontal hollow structure and its inside is located in a rotating actuator Tibetan, and rotating actuator passes cylinder holder and clamp system is fixedly connected with by rotating actuator with driving mechanism;

Technique effect: the utility model overall structure is clear simple, and by driving mechanism driven rotary transmission mechanism, thus make clamp system produce corresponding technique effect, uniform force in pulling force transmission direction, structure is reliable.

The technical scheme that the utility model limits further is:

Aforementioned lathe is pneumatic to rise in core clamping device, driving mechanism comprises and is fixed on the nut seat of cylinder holder away from holder side, nut seat horizontal hollow and its inner surface has rectangular thread, also comprise a rocking arm; the driving section that rocking arm is divided into circular rotatable portion and this circular rotatable portion side to extend; a side in circular rotatable portion also has a horizontal round boss, horizontal round boss to stretch in nut seat and by the rectangular thread on its excircle and nut seat threaded engagement;

Also comprise a cylinder and be fixed on the lower end of cylinder holder and cylinder stretches out a piston rod straight up, piston rod is connected with driving section, also comprise one and hang tight pull bar and this hangs tight pull bar and comprises base and girt, base to stretch in holder and girt successively through cylinder holder, nut seat and circular rotatable portion, and by an adjusting nut, girt and circular rotatable portion to be fixed;

Technique effect: adopt adjusting nut girt and circular rotatable portion to be fixed, effectively can regulate the effective movable length hanging tight pull bar, thus realize rocking arm in rational angle range, reach the folder object that rises to workpiece;

Rotating actuator comprises hides the bearing block of a horizontal hollow be located in holder and one end of bearing block is fixedly connected with the base hanging tight pull bar by socket cap screw, bearing block outer wall also has slip stopper slot parallel with its horizontal median axis together, an anti-turn bolt passes the outer wall of holder and stretches in this slip stopper slot;

Technique effect: holder is the fixed effect playing protective housing and support, while adopting slip stopper slot bearing block and holder to be coupled together, also make bearing block can move axially along lathe spindle, guarantee the normal operation of this clamping device, and the length of this slip stopper slot is not less than the effective travel length hanging tight pull bar;

The rotating shaft of a horizontal hollow is also provided with in bearing block, rotating shaft is connected with bearing block by the taper roll bearing being set in its outside, rotating shaft is less and this end termination is arranged with nut near termination, one end external diameter of base, also be arranged with a back-up ring between nut and external diameter larger portion, nut is also arranged with stop washer;

Technique effect: be provided with two taper roll bearings in the utility model and adopt back-to-back installation, and carry out axial location by the endoporus step of bearing outer ring and bearing block, rotating shaft left end step and left bearing inner ring end face near, right bearing inner ring end face and back-up ring near, and tighten by nut the end-play adjusting pair of bearings, again by the riveted of stop washer, prevent nut loosening and destroy the end-play of bearing group; By effective connection of bearing assembly, can ensure on the one hand workpiece to be clamped with pull bar, collet tension rise folder prerequisite under, rotate with lathe spindle; On the other hand can ensure cylinder, rocking arm, nut seat, cylinder holder, to hang tight non-rotating of pull bar etc. relatively fixing, and play its function; Use taper roll bearing to reduce the friction of bearing block and rotating shaft simultaneously, reduce the damageability of part, prolongation part service life; Under lathe spindle is in rotation status, cylinder, rocking arm, nut seat, cylinder holder, hang tight pull bar and do not rotate with lathe spindle, follow lathe spindle rotate by rotating shaft, back-up ring, nut, stop washer, taper roll bearing composition rotary body, simultaneously, bearing block is relative with holder fixing by anti-turn bolt, does not make circumference and rotates;

Clamp system comprise a pull bar and one end of pull bar through after lathe spindle with rotating shaft threaded engagement, and fastening by hold-down nut between pull bar and rotating shaft, pull bar is vertebral body structure away from one end of rotating shaft and matches with the inner conical surface of the collet be set on lathe spindle;

Aforementioned lathe is pneumatic to rise in core clamping device, and bearing block is also provided with one for the outside framework oil seal in gap between sealing rotary rotating shaft and bearing block away from the one end open place of base, and adopt outside framework oil seal, sealing is better.

Aforementioned lathe is pneumatic to rise in core clamping device, pull bar, lathe spindle, rotating shaft, bearing block, holder, hang tight pull bar, the horizontal median axis in nut seat and circular rotatable portion overlaps.

Aforementioned lathe is pneumatic to rise in core clamping device, and rectangular thread diameter is 60mm, and pitch is 10mm, and the inner conical surface of collet selects 25 °, and described taper roll bearing selects 30205 taper roll bearings;

In the utility model, rectangular thread diameter is 60mm, and pitch is 10mm, and namely rocking arm rotates one week along rectangular thread, then hang tight pull bar in the movement axially producing 10mm; Because collet is when rising by the sleeve type workpiece such as folder water pump cover, its radial swell amount only has tens (0.1-0.3mm), if the inner conical surface of collet selects 25 °, only needs rocking arm to rotate 22 °, when designing, the actual maximum anglec of rotation of rocking arm that allows reaches 60-70 °;

Suppose that the theoretical diameter of workpiece water pump case dead eye is Φ 30 ± 0.01, then the external diameter free state diameter of collet is generally designed to Φ 29.9 ± 0.02, when collet inner conical surface selects 25 °, make collet can rapidly by water pump cover firm grip, by calculating, pull bar 1 need at axial maximum generation (30.01-29.88)/tan25=0.28mm; When practical operation, by adjusting nut, change the size in pull bar tapering pull head and collet conical surface gap, not only ensure overlapping fast to install on collet and positioning of water pump cover, ensure that again the rocking arm anglec of rotation is not too big, moderate, so that can effective Clamp blocks;

Simultaneously, frustoconical bevel angle is 25 °, because be greater than the self-locking angle of ferrous materials, therefore work as cylinder operation, when transmitting loosening force, pull bar can not be locked by collet, on the contrary, collet, by means of the elasticity of self, understands the pushing drawing rod end conical surface, force pull bar to be moved to the left, eliminate collet to the tensioner of water pump cover.

The beneficial effects of the utility model are:

Cylinder in the utility model is not directly strain pull bar, but by rocking arm, hang tight pull bar, rotating actuator etc. indirectly to pull bar apply pulling force, the clamping that the action effect of this non-immediate can not cause the forfeiture of cylinder function because suddenly stopping the supple of gas or steam, having a power failure in the course of the work and affect workpiece, thus improve the security of product, personnel, also ensure that the qualification rate of product;

The utility model is compared relative to prior art to be had: simple and compact for structure, the linkage between assembly is good, and energy-saving effect is remarkable; Collet clamping degree is high, and clamping is quick, reliable, safety, and the elasticity of self can be utilized to recover and be retracted to free state, reduce labour intensity, and clamping process is stablized controlled, substantially reduce the time of lathe process clamping, improve the production efficiency of lathe.

Accompanying drawing explanation

Fig. 1 is the sectional view of the pneumatic core clamping device that rises of the utility model embodiment lathe;

Fig. 2 is the front view of the pneumatic core clamping device that rises of the utility model embodiment lathe;

In figure: 1-pull bar, 2-hold-down nut, 3-holder, 4-rotating shaft, 5-bearing block, 501-slip stopper slot, 6-anti-turn bolt, 7-taper roll bearing, 8-back-up ring, 9-stop washer, 10-nut, 11-socket cap screw, 12-hangs tight pull bar, 1201-base, 1202-girt, 13-cylinder holder, 14-piston rod, 15-nut seat, 16-rocking arm, 1601-circular rotatable portion, 1602-driving section, 17-adjusting nut, 18-cylinder, 19-collet, 20-outside framework oil seal.

Detailed description of the invention

embodiment 1

The pneumatic core clamping device that rises of a kind of lathe that the present embodiment provides, structure as illustrated in fig. 1 and 2, comprise the clamp system, holder 3, cylinder holder 13 and the driving mechanism that set gradually in the horizontal direction, cylinder holder 13 vertically arranges and holder 3 and driving mechanism are separately fixed at its both sides, holder 3 is for horizontal hollow structure and its inside is located in a rotating actuator Tibetan, and rotating actuator passes cylinder holder 13 and clamp system is fixedly connected with by rotating actuator with driving mechanism.

In the present embodiment: driving mechanism comprises and is fixed on the nut seat 15 of cylinder holder 13 away from holder 3 side, nut seat 15 horizontal hollow and its inner surface has rectangular thread, rectangular thread diameter is 60mm, pitch is 10mm, also comprise a rocking arm 16; driving section 1602 that rocking arm 16 is divided into circular rotatable portion 1601 and this circular rotatable portion 1601 side to extend; a side in circular rotatable portion 1601 also has a horizontal round boss, horizontal round boss to stretch in nut seat 15 and by the rectangular thread on its excircle and nut seat 15 threaded engagement;

Also comprise a cylinder 18 and be fixed on the lower end of cylinder holder 13 and cylinder 18 stretches out a piston rod 14 straight up, piston rod 14 is connected with driving section 1602, also comprise one and hang tight pull bar 12 and this hangs tight pull bar 12 and comprises base 1201 and girt 1202, base 1201 to stretch in holder 3 and girt 1202 successively through cylinder holder 13, nut seat 15 and circular rotatable portion 1601, and by an adjusting nut 17, girt 1202 to be fixed with circular rotatable portion 1601;

Rotating actuator comprises hides the bearing block 5 of a horizontal hollow be located in holder 3 and one end of bearing block 5 is fixedly connected with the base 1201 hanging tight pull bar 12 by socket cap screw 11, bearing block 5 outer wall also has slip stopper slot 501 parallel with its horizontal median axis together, one anti-turn bolt 6 through holder 3 outer wall and stretch in this slip stopper slot 501, bearing block 5 is also provided with one for the outside framework oil seal 20 in gap between sealing rotary rotating shaft 4 and bearing block 5 away from the one end open place of base 1201;

The rotating shaft 4 of a horizontal hollow is also provided with in bearing block 5, rotating shaft 4 is connected with bearing block 5 by the taper roll bearing 7 being set in its outside, taper roll bearing (7) selects 30205 taper roll bearings, rotating shaft 4 is less and this end termination is arranged with nut 10 near termination, one end external diameter of base 1201, also be arranged with a back-up ring 8 between nut 10 and external diameter larger portion, nut 10 is also arranged with stop washer 9;

Clamp system comprise a pull bar 1 and one end of pull bar 1 through after lathe spindle with rotating shaft 4 threaded engagement, and it is fastening by hold-down nut 2 between pull bar 1 and rotating shaft 4, pull bar 1 is vertebral body structure away from one end of rotating shaft 4 and matches with the inner conical surface of the collet 19 be set on lathe spindle, and the inner conical surface of collet 19 selects 25 °; Pull bar 1, lathe spindle, rotating shaft 4, bearing block 5, holder 3, hang tight pull bar 12, the horizontal median axis in nut seat 15 and circular rotatable portion 1601 overlaps.

During concrete enforcement, the pneumatic operation of rising by core clamping device of this lathe is controlled by pedal switch;

Under static state, piston rod 14 is contracted in cylinder 18, to injecting lithium saponify between bearing block 5 and rotating shaft 4 and being sealed by outside framework oil seal 20, to ensure the lubricity between bearing block 5 and rotating shaft 4, reduces friction and increases the service life;

Foot pedal switch, cylinder 18 inlet charge, give vent to anger in gas outlet, piston rod 14 stretches out straight up in cylinder 18, rocking arm is driven to be rotated counterclockwise, along the axial direction outwards movement of lathe spindle the rectangular thread effect lower shake-changing arm of nut seat 15 while, rocking arm outwards mobile drive successively hangs tight pull bar 12, bearing block 5, rotating shaft 4, lathe spindle and pull bar 1 move, the movement of rotating shaft 4 drives taper roll bearing 7 and then driven rotary axle 4 by the mobile of bearing block 5, when pull bar 1 moves, its conical surface forces collet 19 swell, thus collet 19 clamps workpiece to be clamped, complete Workpiece clamping operation, now, piston rod 14 stretches out cylinder 18 completely,

Foot pedal switch again, the gas outlet air inlet of cylinder 18, air inlet is given vent to anger, piston rod 14 shrinks straight down, rocking arm is driven to turn clockwise, move inward along the axial direction of lathe spindle at the rectangular thread effect lower shake-changing arm of nut seat 15 simultaneously, rocking arm moves inward to drive successively and hangs tight pull bar 12, bearing block 5, rotating shaft 4, lathe spindle and pull bar 1 move inward, when pull bar moves inward, collet 19 recovers by the elasticity of self and is retracted to free state, remove the core clamping of rising to workpiece to be clamped, what complete workpiece unclamps operation, complete a process-cycle, now, piston rod 14 is contracted in cylinder 18 completely.

In operation, can according to actual conditions, adjusting nut 17 outside adjusting rock arm 16, adjustment hangs tight effective movable length of pull bar 12, in rational angle range, to workpiece the folder object that rises is reached to realize rocking arm 16, fast, can complete the clamping process to workpiece accurately, the haul distance hanging tight the effective movement of pull bar 12 is no more than the length of stopper slot 501 that bearing block 5 outer wall slides;

Lathe spindle is in the state that circumference rotates always, and lathe spindle drives pull bar 1 and rotating shaft 4 to do circumference rotation, and rotating shaft 4 is made circumference by taper roll bearing 7 and rotated in bearing block 5; Allow the maximum anglec of rotation of rocking arm 16 to reach 60-70 ° when rocking arm 16 rotates.

In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims (5)

1. the pneumatic core clamping device that rises of lathe, it is characterized in that, comprise the clamp system, holder (3), cylinder holder (13) and the driving mechanism that set gradually in the horizontal direction, described cylinder holder (13) vertically arranges and described holder (3) and driving mechanism are separately fixed at its both sides, described holder (3) is for horizontal hollow structure and its inside is located in a rotating actuator Tibetan, and described rotating actuator passes cylinder holder (13) and described clamp system is fixedly connected with by rotating actuator with driving mechanism.

2. the pneumatic core clamping device that rises of lathe according to claim 1, is characterized in that:

Described driving mechanism comprises and is fixed on the nut seat (15) of cylinder holder (13) away from holder (3) side, described nut seat (15) horizontal hollow and its inner surface has rectangular thread, also comprise a rocking arm (16), the driving section (1602) that described rocking arm (16) is divided into circular rotatable portion (1601) and this circular rotatable portion (1601) side to extend, one side of described circular rotatable portion (1601) also has a horizontal round boss, described horizontal round boss to stretch in nut seat (15) and by the rectangular thread on its excircle and nut seat (15) threaded engagement,

Also comprise a cylinder (18) and be fixed on the lower end of described cylinder holder (13) and described cylinder (18) stretches out a piston rod (14) straight up, described piston rod (14) is connected with described driving section (1602), also comprise one and hang tight pull bar (12) and this hangs tight pull bar (12) and comprises base (1201) and girt (1202), described base (1201) to stretch in holder (3) and girt (1202) successively through cylinder holder (13), nut seat (15) and circular rotatable portion (1601), and by an adjusting nut (17), girt (1202) is fixed with circular rotatable portion (1601),

Described rotating actuator comprises Tibetan and is located at the bearing block (5) of the horizontal hollow in holder (3) and one end of described bearing block (5) is fixedly connected with the base (1201) hanging tight pull bar (12) by socket cap screw (11), bearing block (5) outer wall also has together parallel with its horizontal median axis slip stopper slot (501), an anti-turn bolt (6) through holder (3) outer wall and stretch in this slip stopper slot (501);

The rotating shaft (4) of a horizontal hollow is also provided with in described bearing block (5), described rotating shaft (4) is connected with bearing block (5) by the taper roll bearing (7) being set in its outside, described rotating shaft (4) is less and this end termination is arranged with nut (10) near termination, one end external diameter of base (1201), also be arranged with a back-up ring (8) between described nut (10) and external diameter larger portion, described nut (10) be also arranged with stop washer (9);

Described clamp system comprise a pull bar (1) and one end of described pull bar (1) through after lathe spindle with rotating shaft (4) threaded engagement, and fastening by hold-down nut (2) between pull bar (1) and rotating shaft (4), pull bar (1) is vertebral body structure away from one end of rotating shaft (4) and matches with the inner conical surface of the collet be set on lathe spindle (19).

3. the pneumatic core clamping device that rises of lathe according to claim 2, is characterized in that: described bearing block (5) is also provided with one for the outside framework oil seal (20) in gap between sealing rotary rotating shaft (4) and bearing block (5) away from the one end open place of base (1201).

4. the pneumatic core clamping device that rises of lathe according to claim 3, is characterized in that: described pull bar (1), lathe spindle, rotating shaft (4), bearing block (5), holder (3), hang tight pull bar (12), the horizontal median axis of nut seat (15) and circular rotatable portion (1601) overlaps.

5. the pneumatic core clamping device that rises of lathe according to claim 2, it is characterized in that: described rectangular thread diameter is 60mm, pitch is 10mm, and the inner conical surface of collet (19) selects 25 °, and described taper roll bearing (7) selects 30205 taper roll bearings.