CN114178878B

CN114178878B - Inner hole supporting structure for processing outer wall of workpiece

Info

Publication number: CN114178878B
Application number: CN202111675039.XA
Authority: CN
Inventors: 刘驰; 刘孝波
Original assignee: Tianjin Juzhen Machinery Fittings Co ltd
Current assignee: Tianjin Juzhen Machinery Fittings Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-01-24
Anticipated expiration: 2041-12-31
Also published as: CN114178878A

Abstract

The invention provides an inner hole supporting structure for processing the outer wall of a workpiece, which comprises a mandrel and supporting plates arranged on the periphery of the mandrel, wherein two ends of the mandrel are respectively provided with an adjusting seat, each adjusting seat is connected with a plurality of supporting rods in a sliding manner, the supporting rods on the two adjusting seats correspond to one another one by one, and the outer ends of the two corresponding supporting rods are connected with one supporting plate; the two adjusting seats are internally provided with a threaded disc and an adjusting gear respectively, the surface of one side of the threaded disc is provided with a plane thread, the adjusting gear is meshed with the threaded disc, a sliding block with a tooth groove is arranged on one edge of the adjusting gear and meshed with the plane thread, and the adjusting gears on the two adjusting seats are connected through a linkage rod, so that the supporting rods on the two adjusting seats can move synchronously. According to the invention, the linkage rod is connected with the adjusting gear, so that the threaded discs in the adjusting seats synchronously rotate, and further the supporting rods on the two adjusting seats synchronously move, so that the stress of the supporting rods at the front part and the stress of the supporting rods at the rear part are the same.

Description

Inner hole supporting structure for processing outer wall of workpiece

Technical Field

The invention belongs to the field of workpiece processing, and particularly relates to an inner hole supporting structure for processing the outer wall of a workpiece.

Background

In the processing of workpieces in the shapes of larger pipes, cylinders and the like, because the workpieces are hollow, the local stress on the surfaces of the workpieces is increased along with the feeding of a cutter, the workpieces are easy to deform, and the precision of the workpieces is adversely affected, therefore, an inner core is required to be placed inside the workpieces to support the side walls of the workpieces during processing, but the workpieces are different in specification, the inner cores with various sizes are required, the processing is inconvenient, the waste of materials is caused, and the cost is increased;

although there is the bearing structure that some can adjust now, divide into the multistage at bearing structure downthehole and support, however like this, adjust the structure and adjust respectively, the operation is comparatively loaded down with trivial details and in the adjustment process, can't guarantee to use the same power to adjust, causes bearing structure itself to exert the force difference to the different regions of downthehole wall, leads to the machining precision to reduce.

Disclosure of Invention

In view of the above, the present invention is directed to an inner hole supporting structure for processing an outer wall of a workpiece, so that an operator can adjust the supporting structure conveniently.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an inner hole supporting structure for processing the outer wall of a workpiece comprises a mandrel, wherein a plurality of supporting plates are distributed on the periphery of the mandrel, two ends of the mandrel are respectively provided with an adjusting seat, a plurality of supporting rods are respectively connected to each adjusting seat in a radial sliding manner, the supporting rods on the two adjusting seats correspond to one another, and the outer ends of the two corresponding supporting rods are connected with one supporting plate;

threaded disc and adjusting gear have been put respectively in two regulation seats, and threaded disc side surface is opened there is plane screw thread, and threaded disc edge is even is equipped with the dogtooth, adjusting gear and dogtooth meshing, it has the slide to open on the regulation seat, bracing piece and a slider rigid coupling, in the slide is arranged in to the slider, and it has a plurality of tooth's sockets to open on the slider for slider and plane thread meshing, adjusting gear on two regulation seats is connected through a gangbar for when adjusting gear rotates, bracing piece ability synchronous motion on two regulation seats.

Furthermore, the adjusting seat comprises a shell and a bottom plate, the shell and the bottom plate surround to form a cavity, and the threaded disc and the adjusting gear are arranged in the cavity.

Furthermore, a prism extends outwards from the middle of the adjusting gear, and the end of the prism penetrates through the shell.

Furthermore, the supporting rod is divided into a fixed supporting rod and an unlocking supporting rod, the unlocking supporting rod comprises a rod body and a telescopic head, a blind hole is formed in the end portion of the rod body, the telescopic head is inserted into the blind hole, a cam is further arranged at the bottom of the blind hole, and the cam can abut against the inner end of the telescopic head in rotation.

Furthermore, the cam comprises a rotating part and a jacking part, wherein a propping surface is arranged on the jacking part, and when the telescopic head moves to the upper limit position, the propping surface tightly props against the end part of the telescopic head.

Furthermore, a round angle is formed on one side edge of the abutting surface, and the round angle abuts against the end part of the telescopic head in the rotating process of the cam.

Furthermore, the rotating part is fixedly connected with a rotating shaft, and two ends of the rotating shaft penetrate through the hole wall of the blind hole to be fixedly connected with a pressing handle.

Furthermore, an installation sleeve is fixedly arranged on the surface of the inner side of one of the support plates, the telescopic head is inserted into the installation sleeve, a long hole is formed in the side wall of the installation sleeve, connecting shafts extend outwards from two sides of the telescopic head respectively, and the connecting shafts are inserted into the long holes.

Further, the width of the long hole is larger than the diameter of the connecting shaft.

Further, the cross section of the supporting plate is arc-shaped.

Compared with the prior art, the inner hole supporting structure for processing the outer wall of the workpiece has the following advantages:

according to the invention, the linkage rod is connected with the adjusting gear, so that the threaded discs in the adjusting seats synchronously rotate, the supporting rods on the two adjusting seats synchronously move, the supporting rods are simultaneously adjusted, the stress of the supporting rods at the front part and the rear part is the same, and meanwhile, the supporting plate is adopted to support the hole wall between the two adjusting seats, so that the deformation of the hole wall caused by uneven stress in the hole wall is prevented;

the cam is matched with the telescopic head, so that the supporting structure is quickly disassembled and assembled, and the adjusting times are reduced;

the adoption is sheathe in at the installation and is opened the slot hole, and the slot hole width is greater than the mode of connecting axle diameter for the face of backup pad can be direct and the terminal surface contact of flexible head, prevents that the connecting axle atress from damaging.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the support structure as a whole;

FIG. 2 is an exploded view of the interior of the adjustment seat;

FIG. 3 is an exploded view of the unlocking support lever;

FIG. 4 is a schematic view of a cam structure;

FIG. 5 is a sectional view of the inner structure of the unlocking support bar;

fig. 6 is a schematic view of the connection relationship between the retractable head and the supporting plate.

Description of reference numerals:

1, a mandrel; 11-a connecting disc; 12-a grip portion; 2-a support plate; 21-mounting a sleeve; 22-long hole; 3-an adjusting seat; 31-a housing; 311-a slide way; 32-a bottom plate; 33-an adjusting gear; 331-prisms; 34-a linkage bar; 35-a threaded disc; 351-convex teeth; 36-a slide block; 361-gullet; 37-a support bar; 37 a-a fixed support bar; 37 b-unlocking the support bar; 371-the body of rod; 3711-blind hole; 372-telescoping head; 373-a cam; 3731-a rotating part; 3732-lift; 3733-against the top surface; 374-pressing handle.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The inner hole supporting structure for processing the outer wall of the workpiece comprises a mandrel 1 and two adjusting seats 3, wherein a plurality of supporting plates 2 are distributed on the periphery of the mandrel 1, the supporting plates 2 can be synchronously close to or far away from the mandrel 1, the two adjusting seats 3 are respectively fixedly arranged at two ends of the mandrel 1, a plurality of supporting rods 37 are respectively connected to each adjusting seat 3 in a radial sliding mode, the supporting rods 37 on the two adjusting seats 3 correspond to one another one by one, the outer ends of the two corresponding supporting rods 37 are connected with one supporting plate 2, and the corresponding supporting rods 37 can synchronously move, so that two ends of each supporting plate 2 are simultaneously close to or far away from the mandrel 1, and the supporting plates 2 can uniformly apply force to the wall of the workpiece hole;

specifically, the joint seat includes shell 31 and bottom plate 32, shell 31 and bottom plate 32 surround and form the cavity, and threaded disc 35 and adjusting gear 33 are placed to the cavity, and threaded disc 35 side surface is opened there is plane screw thread, and threaded disc 35 edge is even is equipped with dogtooth 351, adjusting gear 33 and dogtooth 351 meshing, it has slide 311 to open on the regulation seat 3, bracing piece 37 and a slider 36 rigid coupling, and slider 36 is arranged in slide 311, and opens on the slider 36 and have a plurality of tooth's grooves 361 for slider 36 and plane screw thread meshing, adjusting gear 33 on two regulation seats 3 is connected through a gangbar 34, and at the during operation, operating personnel only need adjust adjusting gear 33 on one regulation seat 3, through gangbar 34 for adjusting gear 33 synchronous rotation on two regulation seats 3 drives threaded disc 35 synchronous rotation, makes bracing piece 37 on two regulation seats 3 can synchronous motion.

In order to facilitate the operator to rotate the adjusting gear 33, a prism 331 extends outwards from the middle of the adjusting gear 33, and the end of the prism 331 penetrates through the casing 31 and is arranged outside the adjusting seat 3.

During working, in a period of time, the size and specification of a workpiece machined by a machine tool are often the same, in order to ensure the machining uniformity of the workpiece, reduce the adjustment times of a support structure and facilitate the disassembly of the support structure and the workpiece, the support rod 37 is divided into a fixed support rod 37a and an unlocking support rod 37b, each adjusting disc is connected with at least one unlocking support rod 37b, specifically, the unlocking support rod 37b comprises a rod body 371 and a telescopic head 372, a blind hole 3711 is formed in the end part of the rod body 371, the telescopic head 372 is inserted into the blind hole 3711, a cam 373 is further arranged at the bottom of the blind hole 3711, the cam 373 can abut against the inner end of the telescopic head 372 during rotation, in order to prevent the cam 373 from sliding when abutting against the telescopic head 372 and causing the support structure to fall off during the machining of the workpiece, the cam 373 comprises a rotating part 3731 and a jacking part 3732, the jacking portion 3732 is provided with a propping surface 3733, when the retractable head 372 moves to an upper limit position, the propping surface 3733 tightly props against the end portion of the retractable head 372, the propping surface 3733 is in contact with the retractable head 372, so that the structure is more reliable, rotation of the cam 373 due to uneven stress is prevented, a rounded corner is formed at one side edge of the propping surface 3733, the rounded corner props against the end portion of the retractable head 372 in the rotation process of the cam 373, the cam 373 rotates conveniently, the corner and the retractable head 372 are prevented from rolling and rubbing in the rotation process of the cam 373, parts are seriously worn, the rotating portion 3731 is fixedly connected with a rotating shaft, two ends of the rotating shaft penetrate through a blind hole 3711 and are fixedly connected with a pressing handle, an operator controls the cam 373 to rotate through the pressing handle 374, when the pressing handle is pressed, the cam 373 rotates, the jacking portion 32 supports the retractable head 3733 to move upwards until the propping surface 3733 is in contact with the bottom surface of the retractable head 372.

Two unblock bracing pieces 37b of adjusting on the seat 3 adjust respectively, in order to prevent the accommodation process, the position of being connected of backup pad 2 and bracing piece 37 takes place the distortion, leads to the part to damage, has set firmly installation cover 21 at the 2 inboard surfaces of backup pad of being connected with locking bracing piece 37, flexible head 372 inserts in installation cover 21, and the installation cover 21 lateral wall is opened there is slot hole 22, flexible head 372 both sides outwards extend the connecting axle respectively, the connecting axle inserts in the slot hole 22, the width of slot hole 22 is greater than the diameter of connecting axle for in the accommodation process, the connecting axle can be at slot hole 22 internal motion, and when the flexible head 372 at both ends all was in the limit, the face of backup pad 2 and the end face contact of flexible head 372 avoided the connecting axle atress too big damage that leads to the fact.

The cross-section of backup pad 2 is the arc to increase the area of contact in face and work piece hole, when the aperture in work piece hole is greater than the diameter of the arc in backup pad 2 cross-section, face center atress is the biggest during use, and the central line both sides atress reduces gradually, and when the aperture is less than the diameter of the arc in backup pad 2 cross-section, backup pad 2 both sides atress is the biggest, and the atress reduces gradually near central point position.

According to the inner hole supporting structure for processing the outer wall of the workpiece, in the using process, the supporting structure is integrally placed into a hole of the workpiece to be processed, the handle 374 is pressed downwards, the telescopic head 372 of the unlocking supporting rod 37b is located at the outer limit position, then the adjusting gear 33 is rotated, the supporting plate 2 is tightly propped against the hole wall, the workpiece processing is completed, when the subsequent processing is still the workpiece with the same specification, the pressing handle 374 can be lifted, the telescopic head 372 is recycled into the blind hole 3711, the supporting plate 2 is separated from the workpiece, the supporting structure is taken out, and after the supporting structure is installed into the next workpiece, the pressing handle 374 can be directly pressed downwards, and the supporting structure installation is completed.

And the two ends of the mandrel 1 are respectively and fixedly provided with a connecting disc 11, and the bottom plate 32 of the adjusting seat 3 is fixedly connected with the connecting discs 11 through bolts.

The middle part of the connecting disc extends outwards to form a holding part 12, and the holding part penetrates through the adjusting seat, so that an operator can move the whole position of the supporting structure through the holding part 12 and provide central limit for the threaded disc.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. The utility model provides an inner hole bearing structure that work piece outer wall processing was used which characterized in that: the support device comprises a mandrel, wherein a plurality of support plates are distributed on the periphery of the mandrel, two ends of the mandrel are respectively provided with an adjusting seat, each adjusting seat is respectively connected with a plurality of support rods in a radial sliding manner, the support rods on the two adjusting seats correspond to one another one by one, and the outer ends of the two corresponding support rods are connected with one support plate;

the two adjusting seats are respectively internally provided with a threaded disc and an adjusting gear, the surface of one side of the threaded disc is provided with a plane thread, the edge of the threaded disc is uniformly provided with convex teeth, the adjusting gear is meshed with the convex teeth, the adjusting seats are provided with slide ways, the supporting rod is fixedly connected with a sliding block, the sliding block is arranged in the slide ways, and the sliding block is provided with a plurality of tooth grooves, so that the sliding block is meshed with the plane thread, the adjusting gears on the two adjusting seats are connected through a linkage rod, and the supporting rods on the two adjusting seats can synchronously move when the adjusting gears rotate;

the support rod is divided into a fixed support rod and an unlocking support rod, the unlocking support rod comprises a rod body and a telescopic head, a blind hole is formed in the end portion of the rod body, the telescopic head is inserted into the blind hole, a cam is further arranged at the bottom of the blind hole, and the cam can abut against the inner end of the telescopic head in rotation.

2. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 1, wherein: the adjusting seat comprises a shell and a bottom plate, the shell and the bottom plate surround to form a cavity, and the threaded disc and the adjusting gear are arranged in the cavity.

3. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 1, wherein: the middle part of the adjusting gear extends outwards to form a prism, and the end part of the prism penetrates through the shell.

4. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 1, wherein: the cam comprises a rotating part and a jacking part, wherein the jacking part is provided with a propping surface, and when the telescopic head moves to the upper limit position, the propping surface tightly props against the end part of the telescopic head.

5. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 4, wherein: the edge of one side of the abutting surface is provided with a round angle, and the round angle abuts against the end part of the telescopic head in the rotating process of the cam.

6. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 4, wherein: the rotating part is fixedly connected with a rotating shaft, and two ends of the rotating shaft penetrate through the hole wall of the blind hole and are fixedly connected with a pressing handle.

7. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 1, wherein: the inner side surface of one of the supporting plates is fixedly provided with an installation sleeve, the telescopic head is inserted into the installation sleeve, the side wall of the installation sleeve is provided with a long hole, two sides of the telescopic head respectively extend outwards to form a connecting shaft, and the connecting shaft is inserted into the long hole.

8. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 7, wherein: the width of the long hole is larger than the diameter of the connecting shaft.

9. An inner hole supporting structure for processing the outer wall of a workpiece according to claim 1, wherein: the cross section of the supporting plate is arc-shaped.