CN207996995U

CN207996995U - Open-close type follow-rest and Machining of Shaft-type Parts equipment

Info

Publication number: CN207996995U
Application number: CN201820480437.3U
Authority: CN
Inventors: 曹成
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2018-10-23
Anticipated expiration: 2028-03-30

Abstract

A kind of open-close type follow-rest of the utility model offer and Machining of Shaft-type Parts equipment, are related to the technical field of apparatus for fastening.Open-close type follow-rest includes pedestal, position-limited rack and flexible adjustment frame;Pedestal is connected in the leading plate face of lathe saddle, and one end of position-limited rack is rotatably connected on pedestal, and the other end of position-limited rack is fixedly connected with one end of flexible adjustment frame, and position-limited rack is for being defined the position of workpiece;The other end of flexible adjustment frame is connected to the guide rail outer end of lathe middle carriage, and flexible adjustment frame is for being defined the position of position-limited rack.It solves in the prior art, follow-rest is by the way of nut adjustment, the technical issues of increasing workload.The utility model is accurately positioned the position of position-limited rack using pedestal, the Working position of workpiece is positioned using position-limited rack, the position of position-limited rack is defined using flexible adjustment frame, so that it is guaranteed that the Working position of workpiece is accurate, workpiece governing speed is fast, reduces workload.

Description

Open-close type follow-rest and Machining of Shaft-type Parts equipment

Technical field

The utility model is related to the technical fields of apparatus for fastening, more particularly, to a kind of open-close type follow-rest and axial workpiece Process equipment.

Background technology

Numerically controlled lathe is to use relatively broad one of numerically-controlled machine tool at present.It is mainly used for axial workpiece or disk-like accessory Inside and outside cylindrical surface, the inside and outside circular conical surface of arbitrary cone angle, the machinings such as positive camber and cylinder, tapered tread in complicated revolution, And grooving, drilling, reaming, fraising and bore hole etc. can be carried out.Numerically controlled lathe has the characteristics that:High precision machining has and stablizes Processing quality;It can carry out the linkage of multi-coordinate, the part of energy machining shape complexity;When processing part change, it is only necessary to change Numerical control program saves the Operational preparation time;The precision of lathe itself is high, rigid big, and advantageous machining dosage, productivity may be selected It is high;Machinery Tool Automation degree is high, can reduce labor intensity.

Centre numerically controlled lathe prevents axial workpiece bending during processing thin and long shafts part, using follow-rest, becomes Shape, shake knife, follow-rest include:Two holding dog fixed brackets, three holding dog fixed brackets and centre frame, the fixed branch of two holding dogs Frame, the fixed holding dog of three holding dogs are all made of nut adjustment length, and to adapt to the variation of diameter of work size, holding dog is generally by casting Iron, copper and live bearing are manufactured, and are conveniently replaceable;Centre frame fixes workpiece by three-jaw, and for two pawls in next pawl upper, three-jaw is all adjustable Length is saved, dewclaw is retractable.

Using existing follow-rest workpieces processing, when especially carrying out high-volume, big surplus, multiple cut, due to knife Frame uses the mode of holding dog nut adjustment, when processing operation, need operating personnel according to various sizes of workpiece at any time into Row adjustment, thus significantly increases operational workload.

Utility model content

It is existing in the prior art to solve the purpose of this utility model is to provide a kind of open-close type follow-rest, with knife Frame carry out high-volume, big surplus, multiple cut when, due to the use of be holding dog nut adjustment mode, need operating personnel's root According to various sizes of workpiece, nut is adjusted at any time, the technical issues of mode of nut adjustment increases workload.

The utility model also provides a kind of Machining of Shaft-type Parts equipment, and to solve in the prior art, operating personnel need root According to various sizes of workpiece, follow-rest is adjusted at any time, increases workload, reduces the technology of the processing efficiency of equipment Problem.

A kind of open-close type follow-rest provided by the utility model, including pedestal, position-limited rack and flexible adjustment frame;

The pedestal is connected in the leading plate face of lathe saddle, and one end of the position-limited rack is rotatably connected on the bottom On seat, the other end of the position-limited rack is fixedly connected with one end of the flexible adjustment frame, and the position-limited rack is used for workpiece Position is defined;

The other end of the flexible adjustment frame is connected to the guide rail outer end of lathe middle carriage, the flexible adjustment frame for pair The position of the position-limited rack is defined.

Further, the pedestal be equipped with link block, the link block be equipped with the first connecting hole, the one of the position-limited rack End is equipped with the second connecting hole, and first connecting hole is connected with second connecting hole by shaft.

Further, the position-limited rack includes arc frame, the first holding dog and the second holding dog;

The medial surface of the arc frame has arc groove, and first holding dog is connected to one end of the arc groove, described Second holding dog is connected to the other end of the arc groove, and first holding dog and second holding dog limit the position of workpiece It is fixed.

Further, one end of the arc groove is equipped with the first link slot, and first holding dog is connected to described first and connects One end of access slot;

The other end of the arc groove is equipped with the second link slot, and second holding dog is connected to the one of second link slot End.

Further, it is connected with the first elastomer block in first link slot;It is connected with second in second link slot Elastomer block.

Further, the other end of first link slot is connected with the first lid, the other end of second link slot It is connected with the second lid.

Further, first holding dog includes locating piece, U-shaped seat, bearing and limit shaft,

One end of the locating piece is connected in first link slot, and the other end connection of the locating piece is described U-shaped Seat, the bearing are connected to by the limit shaft in the U-shaped seat;

The connection structure of second holding dog is identical as the connection structure of the first holding dog.

Further, the one end side of the locating piece is equipped with limiting slot, and the arc frame is equipped with limit hole, the limit Position slot is connected with the limit hole by locking member;

Between connection structure between second holding dog and the arc frame, with first holding dog and the arc frame Connection structure it is identical.

Further, the flexible adjustment frame includes fixed link, take-up rod, connection ring and elastic component;

One end of the fixed link is fixedly connected with the other end of the position-limited rack, the other end of the fixed link with it is described One end of take-up rod is rotatablely connected, and the other end of the take-up rod is adjusted for holding;One end of the connection ring is connected to institute It states in take-up rod, the other end of the connection ring is connect with one end of the elastic component, and the other end of the elastic component is connected to The guide rail outer end of lathe middle carriage.

The utility model also provides a kind of Machining of Shaft-type Parts equipment, and the process equipment installation open-close type is with knife Frame.

A kind of open-close type follow-rest provided by the utility model, the pedestal are connected to the leading plate face of lathe saddle On, the position of pedestal is fixed;One end of the position-limited rack is connect with the base rotation, the other end of the position-limited rack It is fixedly connected with one end of the flexible adjustment frame, it, can be in the position-limited rack when manually adjusting the flexible adjustment frame The location of workpiece is locked, to keep the defined position of workpiece accurate;The other end of the flexible adjustment frame is connected in lathe The guide rail outer end of planker is fixed with the position to the flexible adjustment frame, using the flexible adjustment frame to the limit The position of frame is defined, and workpiece is made to be accurately positioned in the position-limited rack.The utility model is using pedestal to the position of position-limited rack Set accurate positionin, the Working position of workpiece positioned using position-limited rack, using flexible adjustment frame to the position of position-limited rack into Row limits, so that it is guaranteed that the Working position of workpiece is accurate, the regulative mode of workpiece is simple, and governing speed is fast, reduces workload.

The utility model also provides a kind of Machining of Shaft-type Parts equipment, which installs above-mentioned open-close type with knife Frame can quickly adjust follow-rest, to improve the processing efficiency of equipment according to various sizes of workpiece.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, other drawings may also be obtained based on these drawings.

Fig. 1 is the structural schematic diagram for the open-close type follow-rest one side that the utility model embodiment provides;

Fig. 2 is the knot when open-close type follow-rest that the utility model embodiment provides disassembles the first holding dog, the second holding dog Structure schematic diagram;

Fig. 3 is the structural schematic diagram for the first holding dog that the utility model embodiment provides;

Fig. 4 is the structural schematic diagram for the second holding dog that the utility model embodiment provides;

Fig. 5 is structural schematic diagram when the first lid, the second lid that the utility model embodiment provides open decomposition;

Fig. 6 is the structural schematic diagram for the open-close type follow-rest another side that the utility model embodiment provides.

Icon:100- pedestals;200- position-limited racks;300- flexible adjustment framves;101- link blocks;The connections of 102- first Hole;103- shafts;The second connecting holes of 201-;202- arc frames;The first holding dogs of 203-;The second holding dogs of 204-;205- arcs Shape slot;The first link slots of 206-;The second link slots of 207-;The first elastomer blocks of 208-;The second elastomer blocks of 209-;210- One lid;The second lids of 211-;212- locating pieces;213-U type seats;214- bearings;215- limit shafts;216- is limited Slot;217- limit holes;218- locking members;301- fixed links;302- take-up rods;303- connection rings;304- elastic components.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, can also be electrical connection;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

Fig. 1 is the structural schematic diagram for the open-close type follow-rest one side that the utility model embodiment provides.

As shown in Figure 1, a kind of open-close type follow-rest provided by the utility model, including pedestal 100, position-limited rack 200 and bullet Property adjusting bracket 300;

The pedestal 100 is connected in the leading plate face of lathe saddle, and one end of the position-limited rack 200 is rotatably connected on On the pedestal 100, the other end of the position-limited rack 200 is fixedly connected with one end of the flexible adjustment frame 300, the limit Frame 200 is for being defined the position of workpiece;

The other end of the flexible adjustment frame 300 is connected to the guide rail outer end of lathe middle carriage, the flexible adjustment frame 300 It is defined for the position to the position-limited rack 200.

In Fig. 1, pedestal 100 is the metal derby of rectangular-shape, and pedestal 100, which is fixed by bolts, is connected to lathe saddle Leading plate face on, at the position of middle carriage 20mm, position-limited rack 200, the first holding dog 203, the second holding dog 204, elasticity adjust Section frame 300 is placed at the positions 25mm of process tool rear.

The lower end of position-limited rack 200 is rotatably connected on pedestal 100, and is arranged in 100 upper surface of pedestal close to intermediate position It sets;The upper end of position-limited rack 200 is fixed by bolts with the left end of flexible adjustment frame 300 and connect, and the right end of flexible adjustment frame 300 is lived The dynamic guide rail outer end for being connected to lathe middle carriage.

In one embodiment of the utility model, the right end of flexible adjustment frame 300 is held, flexible adjustment frame 300 is utilized Left end drives the upper end of position-limited rack 200 to move upwards, and so that the lower end of position-limited rack 200 is rotated up, outwardly opens;By workpiece setting In the top position of pedestal 100;The right end for holding flexible adjustment frame 300 drives position-limited rack using the left end of flexible adjustment frame 300 200 upper end moves downward, and the lower end of position-limited rack 200 is made to rotate down, and workpiece is fixed in position-limited rack 200, due to bullet Property adjusting bracket 300 right end be equipped with hook, the guide rail outer end of lathe middle carriage be equipped with bolt, hook is connected together in bolt On, the position of position-limited rack 200 is fixed, to which the position of workpiece be fixed.

Further, the pedestal 100 is equipped with link block 101, and the link block 101 is equipped with the first connecting hole 102, institute The one end for stating position-limited rack 200 is equipped with the second connecting hole 201, first connecting hole 102 and second connecting hole 201 by turning Axis 103 connects.

In Fig. 1,100 upper surface of pedestal is formed with link block 101, the rectangular-shape that link block 101 is vertically arranged, and And the upper surface of link block 101 is formed with curved end.

The first connecting hole 102 is formed on curved end, the first connecting hole 102 is through-hole, in the lower end of position-limited rack 200 Equipped with the second connecting hole 201, the second connecting hole 201 is through-hole, and the left end of shaft 103 is connected in the first connecting hole 102, shaft 103 right end is connected in the second connecting hole 201, and when adjusting the upper end of position-limited rack 200, position-limited rack 200 can be rotation with lower end Turn center to be rotated, to be defined the position of workpiece.

Further, the position-limited rack 200 includes arc frame 202, the first holding dog 203 and the second holding dog 204;

There is the medial surface of the arc frame 202 arc groove 205, first holding dog 203 to be connected to the arc groove 205 One end, second holding dog 204 is connected to the other end of the arc groove 205, first holding dog 203 and second described Pawl 204 is defined the position of workpiece.

In Fig. 1, the medial surface of arc frame 202 is equipped with arc groove 205, and the first holding dog 203 is vertically arranged, and is connected to arc The upper end of shape slot 205, the second holding dog 204 are horizontally disposed, and are connected to the lower end of arc groove 205, the first holding dog 203 and second Pawl 204 matches, and is defined respectively in position both vertically as well as horizontally to workpiece.

In compared with the existing technology, follow-rest does that holding dog is easy to wear using cast iron, copper etc., influences the processing essence of workpiece Degree.

The application limits workpiece in position both vertically as well as horizontally using the first holding dog 203 and the second holding dog 204 It is fixed, two are adjusted between holding dog and workpiece in the resistance of radial direction, so that two holding dogs and workpiece using flexible adjustment frame 300 Between resistance offset.

Fig. 2 is the knot when open-close type follow-rest that the utility model embodiment provides disassembles the first holding dog, the second holding dog Structure schematic diagram.

As shown in Fig. 2, further, one end of the arc groove 205 is equipped with the first link slot 206, first holding dog 203 are connected to one end of first link slot 206;

The other end of the arc groove 205 is equipped with the second link slot 207, and second holding dog 204 is connected to described second One end of link slot 207.

In fig. 2, the upper end of arc groove 205 is equipped with the first link slot 206, and the use of the first link slot 206 is vertically arranged Square groove, the first holding dog 203 are connected to the lower end of the first link slot 206, so that the lower end of the first holding dog 203 can be with workpiece Upper end outer surface contacts.

The lower end of arc groove 205 is equipped with the second link slot 207, and the second link slot 207 uses horizontally disposed square groove, the Two holding dogs 204 are connected to the right end of the second link slot 207, so that the right end of the second holding dog 204 can be with the left side appearance of workpiece Face contacts.

Fig. 5 is structural schematic diagram when the first lid, the second lid that the utility model embodiment provides open decomposition.

As shown in figure 5, it is further, the first elastomer block 208 is connected in first link slot 206;Described second connects The second elastomer block 209 is connected in access slot 207.

In Figure 5, the first elastomer block 208 uses rectangular rubber block, can also use rectangular polyurethane block, rectangular Nylon block etc..

The structure and material of second elastomer block 209, structure and material all same with the first elastomer block 208.

The first elastomer block 208 is connected in the upper end of the first holding dog 203, in the second elasticity of left end connection of the second holding dog 204 Block 209 makes two holding dogs be all made of the structure of semi-movable, so that two point of contacts between holding dog and workpiece can offset; And various sizes of workpiece can adapt to using the elastic force of two elastomer blocks using the structure of movable holding dog.

In compared with prior art, nut is needed to constantly change, service life is low, and the regulative mode of the application can extend The service life of follow-rest, to reduce cost.

Further, the other end of first link slot 206 is connected with the first lid 210, second link slot 207 The other end be connected with the second lid 211.

In Figure 5, the first lid 210 is square plate, and the first lid 210 is connected to the upper end of the first link slot 206; The side of one lid 210 is equipped with through-hole, and the upper side of the first link slot 206 also is provided with through-hole, utilizes screw bolt passes two A through-hole, to which the first lid 210 to be connected to the upper end position of the first link slot 206.

Second lid 211 is square plate identical with 210 structure of the first lid, and the second lid 211 is connected to the second connection The left end of slot 207;It is equipped with through-hole in the side of the second lid 211, the left end side of the second link slot 207 also is provided with through-hole, profit With two through-holes of screw bolt passes, to which the second lid 211 to be connected to the left position of the second link slot 207.

Fig. 3 is the structural schematic diagram for the first holding dog that the utility model embodiment provides;Fig. 4 is the utility model embodiment The structural schematic diagram of the second holding dog provided.

As shown in figure 3, further, first holding dog 203 includes locating piece 212, U-shaped seat 213, bearing 214 and limit Position axis 215,

One end of the locating piece 212 is connected in first link slot 206, and the other end of the locating piece 212 connects The U-shaped seat 213 is connect, the bearing 214 is connected to by the limit shaft 215 in the U-shaped seat 213.

Locating piece 212 is rectangular metal derby, what U-shaped seat 213 and locating piece 212 were formed as one, and U-shaped seat 213 is opened Mouth down is arranged, and bearing 214 is connected in opening, and is fixed using limit shaft 215, and bearing 214 can be with limit Axis 215 pivots about movement, so that the peripheral surface of bearing 214 can be contacted with the surface of workpiece, to workpiece Surface fixes.

As shown in figure 4, the connection structure of second holding dog 204 is identical as the connection structure of first holding dog 203.

In Fig. 3, Fig. 4, two holding dogs difference lies in:First holding dog 203 is vertically arranged, and 204 level of the second holding dog is set It sets, is fixed with the position to two holding dogs.

As shown in Fig. 3, Fig. 6, further, the one end side of the locating piece 212 is equipped with limiting slot 216, the arc Frame 202 is equipped with limit hole 217, and the limiting slot 216 and the limit hole 217 are connected by locking member 218;

Connection structure between second holding dog 204 and the arc frame 202, with first holding dog 203 with it is described Connection structure between arc frame 202 is identical.

In figure 3, the side of locating piece 212 is equipped with the limiting slot 216 that is recessed inwardly, in figure 6, on arc frame 202 The position of first link slot 206 is equipped with limit hole 217, and locking member 218 uses adjusting bolt.

After locating piece 212 is connected to the first link slot 206, adjusting bolt is locked at limiting slot 216 across limit hole 217 It is interior, it is fixed with the position to locating piece 212.

In Fig. 4, Fig. 6, since the second holding dog 204 is identical as the connection structure of the first holding dog 203, the second holding dog 204 with The connection structure between connection structure and the first holding dog 203 and arc frame 202 between arc frame 202 is also identical.

Further, the flexible adjustment frame 300 includes fixed link 301, take-up rod 302, connection ring 303 and elastic component 304;

One end of the fixed link 301 is fixedly connected with the other end of the position-limited rack 200, the fixed link 301 it is another One end and one end of the take-up rod 302 are rotatablely connected, and the other end of the take-up rod 302 is adjusted for holding;The connection One end of ring 303 is connected in the take-up rod 302, and the other end of the connection ring 303 and one end of the elastic component 304 connect It connects, the other end of the elastic component 304 is connected to the guide rail outer end of lathe middle carriage.

In Fig. 1, fixed link 301 and take-up rod 302 are rectangular bar, and the length of fixed link 301 is more than take-up rod 302 Length.

The left end of fixed link 301 and the upper end of arc frame 202 are connected by screw bolts, the right end centre position of fixed link 301 Equipped with groove, the lower end of take-up rod 302 is equipped with protruding block, and protruding block is connected to using shaft in groove.

Connection ring 303 is rectangle ring, and the upper end of connection ring 303 is movably connected in the lower end side of take-up rod 302.

Elastic component 304 uses spring, is respectively equipped with hook at the both ends of spring, the hook of spring upper end is connected together even The lower end of ring 303 is connect, the hook of lower spring end is connected together on the bolt of the guide rail outer end of lathe middle carriage.

Open-close type follow-rest provided by the utility model, in use, the hand of operator holds take-up rod, position-limited rack can It is rotated by basic point of lower end, two point of contacts that two on position-limited rack holding dog can be similar along the outside diameter of workpiece become Change and generate Radial resistant force, the position of workpiece is defined;Two holding dogs on position-limited rack are all made of semi-movable, i.e., in holding dog Rubber pad is padded in bottom, so that two holding dogs are offset with workpiece point of contact;The position of workpiece is adjusted using flexible adjustment frame, phase Than the prior art, workload and the cost of replacement are significantly reduced;Flexible adjustment frame uses fixed link, take-up rod and spring The automatic adjustment mode of tightening, solves in the prior art, and when follow-rest centre frame holding dog adjusts too tight or too loose, Vehicle Processing goes out The problems such as workpiece is at slub type or accuracy decline;The application can adapt to high-volume, big surplus, big feed thin and long shafts part Processing, it is simple structure, easy to use.

The process equipment uses above-mentioned open-close type follow-rest, the position of workpiece can be quickly adjusted, to improve The processing efficiency of equipment.

Finally it should be noted that:The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System;Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand:It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement;And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims

1. a kind of open-close type follow-rest, which is characterized in that including pedestal (100), position-limited rack (200) and flexible adjustment frame (300);

The pedestal (100) is connected in the leading plate face of lathe saddle, and one end of the position-limited rack (200) is rotatably connected on On the pedestal (100), the other end of the position-limited rack (200) is fixedly connected with one end of the flexible adjustment frame (300), institute Position-limited rack (200) is stated for being defined to the position of workpiece;

The other end of the flexible adjustment frame (300) is connected to the guide rail outer end of lathe middle carriage, the flexible adjustment frame (300) It is defined for the position to the position-limited rack (200).

2. open-close type follow-rest according to claim 1, which is characterized in that the pedestal (100) is equipped with link block (101), the link block (101) is equipped with the first connecting hole (102), and one end of the position-limited rack (200) is equipped with the second connecting hole (201), first connecting hole (102) and second connecting hole (201) are connected by shaft (103).

3. open-close type follow-rest according to claim 1, which is characterized in that the position-limited rack (200) includes arc frame (202), the first holding dog (203) and the second holding dog (204);

There is the medial surface of the arc frame (202) arc groove (205), first holding dog (203) to be connected to the arc groove (205) one end, second holding dog (204) are connected to the other end of the arc groove (205), first holding dog (203) The position of workpiece is defined with second holding dog (204).

4. open-close type follow-rest according to claim 3, which is characterized in that one end of the arc groove (205) is equipped with the One link slot (206), first holding dog (203) are connected to one end of first link slot (206);

The other end of the arc groove (205) is equipped with the second link slot (207), and second holding dog (204) is connected to described the One end of two link slots (207).

5. open-close type follow-rest according to claim 4, which is characterized in that be connected in first link slot (206) First elastomer block (208);It is connected with the second elastomer block (209) in second link slot (207).

6. open-close type follow-rest according to claim 4, which is characterized in that the other end of first link slot (206) It is connected with the first lid (210), the other end of second link slot (207) is connected with the second lid (211).

7. open-close type follow-rest according to claim 4, which is characterized in that first holding dog (203) includes locating piece (212), U-shaped seat (213), bearing (214) and limit shaft (215),

One end of the locating piece (212) is connected in first link slot (206), the other end of the locating piece (212) The U-shaped seat (213) is connected, the bearing (214) is connected to by the limit shaft (215) in the U-shaped seat (213);

The connection structure of second holding dog (204) is identical as the connection structure of the first holding dog (203).

8. open-close type follow-rest according to claim 7, which is characterized in that the one end side of the locating piece (212) is set There are limiting slot (216), the arc frame (202) to be equipped with limit hole (217), the limiting slot (216) and the limit hole (217) it is connected by locking member (218);

Connection structure between second holding dog (204) and the arc frame (202), with first holding dog (203) and institute The connection structure stated between arc frame (202) is identical.

9. open-close type follow-rest according to claim 1, which is characterized in that the flexible adjustment frame (300) includes fixing Bar (301), take-up rod (302), connection ring (303) and elastic component (304);

One end of the fixed link (301) is fixedly connected with the other end of the position-limited rack (200), the fixed link (301) The other end and one end of the take-up rod (302) are rotatablely connected, and the other end of the take-up rod (302) is adjusted for holding;Institute The one end for stating connection ring (303) is connected in the take-up rod (302), the other end and the elasticity of the connection ring (303) One end of part (304) connects, and the other end of the elastic component (304) is connected to the guide rail outer end of lathe middle carriage.

10. a kind of Machining of Shaft-type Parts equipment, which is characterized in that the process equipment is installed such as any one of claim 1-9 institutes The open-close type follow-rest stated.