CN214263908U

CN214263908U - Lathe convenient to turning flange blind plate

Info

Publication number: CN214263908U
Application number: CN202120104909.7U
Authority: CN
Inventors: 靖相兵; 郭建民; 高鑫
Original assignee: Ji'nan Jiang Hua Forging Machinery Co ltd
Current assignee: Ji'nan Jiang Hua Forging Machinery Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-24
Anticipated expiration: 2031-01-14

Abstract

The utility model relates to a lathe convenient to turning flange blind flange relates to the technical field of metal processing equipment, and it includes the frame, rotates in the frame to be connected with the main shaft, is provided with first fixture in the main shaft, is provided with second fixture in the frame, and first fixture and second fixture centre gripping respectively on two terminal surfaces of blank, and first fixture includes the base plate, and second fixture includes caudal vertebra and tailstock. This application is when centre gripping blank, is about to place the blank between base plate and tailstock, later removes the tailstock, compresses tightly the blank on the base plate through the caudal vertebra, and when the main shaft rotated, the blank alright followed the axle center rotation of main shaft, and the outer peripheral face of blank is in complete naked state moreover, and the turning tool of being convenient for carries out the turning to the outer peripheral face of blank.

Description

Lathe convenient to turning flange blind plate

Technical Field

The application relates to the field of metal processing equipment, in particular to a lathe convenient for turning a flange blind plate.

Background

A flange blind (also called blind flange) is a form of flange, which can be understood as a flange without a hole in the middle. The function of the flange blind plate is as follows: one is to block the end of the pipeline, and the other is to conveniently remove the sundries in the pipeline during the overhaul. The plugging function is the same as that of the end socket and the pipe cap, but the end socket cannot be detached, and the flange blind plate is fixed by bolts and is convenient to detach.

At present, when a common flange is machined, a lathe is firstly used for lathing the inner peripheral surface, the outer peripheral surface and the end surface of a blank, and then a drilling machine is used for drilling the blank. Most of the fixtures on the lathe are three-jaw chucks, and when the common flange is machined, the three-jaw chucks firstly clamp the outer peripheral surface of the blank to enable the lathe to cut the inner peripheral surface of the blank, and then the three-jaw chucks clamp the inner peripheral surface of the blank to enable the lathe to cut the outer peripheral surface of the blank.

In view of the above-mentioned related technologies, the inventor believes that, because there is no hole in the middle of the flange blank, the blank of the flange blank is mostly a circular plate, when clamping the blank, the three-jaw chuck can only clamp the outer peripheral surface of the blank, when turning the outer peripheral surface of the blank, the jaws of the three-jaw chuck can affect the feeding of the turning tool, so that the common three-jaw chuck cannot meet the requirement of clamping the blank of the flange blank.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the turning of the flange blind plate, the application provides a lathe convenient to turn the flange blind plate.

The application provides a lathe convenient to turning flange blind plate adopts following technical scheme:

a lathe convenient for turning a flange blind plate comprises a frame, a main shaft is rotatably connected on the frame, a first clamping mechanism is arranged on the main shaft, the machine frame is provided with a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are respectively clamped on two end faces of the blank piece, the first clamping mechanism comprises a base plate which is coaxially and fixedly connected to the main shaft, the second clamping mechanism comprises a tail frame and a tail cone, the tailstock is connected with the rack in a sliding manner along the axial direction of the main shaft, the caudal vertebra is connected on the tailstock in a rotating manner along the axis of the main shaft, the first clamping mechanism further comprises at least three supporting pins, the supporting pins are arranged on one end face, close to the tailstock, of the substrate, the axes of the supporting pins are coaxial with the axes of the substrate, and the supporting pins are uniformly distributed along the circumferential direction of the substrate.

By adopting the technical scheme, when a blank is clamped, the blank is placed between the first clamping mechanism and the second clamping mechanism, then the first clamping mechanism is clamped on one end face of the blank, and the second clamping mechanism is clamped on the other end face of the blank, so that the peripheral face of the blank is in a completely exposed state, and a turning tool can conveniently turn the peripheral face of the blank; when clamping a blank, namely placing the blank between a base plate and a tail frame, then moving the tail frame, and pressing the blank on the base plate through a tail cone, wherein when a main shaft rotates, the blank can rotate along the axis of the main shaft, and the peripheral surface of the blank is in a completely exposed state, so that a turning tool can conveniently turn the peripheral surface of the blank; when centre gripping blank, a terminal surface and the supporting pin butt of blank, another terminal surface and the caudal vertebra butt of blank, so blank alright not direct and the base plate contact, when the processing diameter is less than the blank of base plate, when lathe tool turning was close to the one end of base plate to blank, the lathe tool was difficult to interfere with the base plate, and then has protected lathe tool and base plate.

Optionally, an end of the support pin away from the substrate is tapered.

Through adopting above-mentioned technical scheme, when the tail cone compressed tightly the blank on the supporting pin, the supporting pin was close to the tip of blank and is made the terminal surface of blank produce slight deformation, and when lathe turning blank, the blank was difficult for taking place relative slip with the base plate, has improved the turning precision.

Optionally, the support pin is slidably connected to the substrate along an axis of the support pin.

Through adopting above-mentioned technical scheme, when the terminal surface unevenness that the blank is close to the base plate, can make the even blank butt of all supporting pins through the position of adjustment supporting pin, and make blank and base plate keep coaxial, reduced blank and base plate and taken place relative movement's probability, improved the turning precision, reduced the cutting allowance simultaneously, practiced thrift the material.

Optionally, the outer circumferential surface of the support pin is provided with an external thread, the substrate is provided with an internal thread, and the support pin is in threaded connection with the substrate.

By adopting the technical scheme, the distance of the supporting pin extending out of the substrate can be adjusted by rotating the supporting pin, and then all the supporting pins are abutted against one end face of the blank close to the substrate, and meanwhile, the blank and the substrate are kept coaxial.

Optionally, a hexagonal head is integrally formed on the supporting pin.

Through adopting above-mentioned technical scheme, after blank is compressed tightly on the supporting pin by the caudal vertebra, operating personnel accessible spanner breaks off with the fingers and thumb the hexagonal head, and then adjusts the distance that the supporting pin stretches out from the base plate, and operating personnel needn't lift the blank off from between first fixture and the second fixture when adjusting the supporting pin like this, has improved machining efficiency.

Optionally, a locking assembly is arranged between the support pin and the substrate, the locking assembly includes a first nut and a second nut, an external thread is provided on the outer peripheral surface of the support pin, the first nut and the second nut are both screwed on the support pin, a through hole for the support pin to pass through is provided on the substrate, the support pin is arranged in the through hole in a penetrating manner, the first nut abuts against an end surface of the substrate far away from the tailstock, and the second nut abuts against an end surface of the substrate near the tailstock.

By adopting the technical scheme, the first nut and the second nut are respectively tightly propped against the two end faces of the substrate, so that the supporting pin is not easy to move relative to the substrate; and the base plate is not provided with threads, when the external threads on the supporting pins are damaged due to pressure, only the supporting pins need to be replaced without replacing the base plate, and materials are saved.

Optionally, a guide block is fixedly connected to the substrate, the guide block is disposed on an inner wall of the through hole, a guide groove is formed in an outer circumferential surface of the support pin, and a length direction of the guide groove is parallel to a length direction of the support pin.

By adopting the technical scheme, due to the arrangement of the guide block, the external thread on the supporting pin is not easy to directly contact with the inner wall of the through hole, so that the probability of damage of the external thread of the supporting pin is reduced; due to the arrangement of the guide block, when an operator breaks the first nut and the second nut, the support pin is not easy to rotate relative to the substrate, and the support pin is convenient to adjust.

In summary, the present application includes at least one of the following beneficial technical effects:

through the setting of first fixture and second fixture, first fixture centre gripping is on a terminal surface of blank, and second fixture centre gripping is on another terminal surface of blank, and the outer peripheral face of blank is in complete naked state like this, and the lathe tool of being convenient for carries out the turning to the outer peripheral face of blank.

Through the setting of supporting pin, when centre gripping blank, blank is close to a terminal surface and the supporting pin butt of base plate, so blank alright not direct and the base plate contact, when the processing diameter is less than the blank of base plate, when lathe tool turning was close to the one end of base plate to blank, the lathe tool was difficult for interfering with the base plate, and then has protected lathe tool and base plate.

One end setting through keeping away from the base plate with the supporting pin is the toper, and when the tail cone compressed tightly blank on the supporting pin, the supporting pin was close to the tip messenger blank's of blank terminal surface and produced slight deformation, and when lathe tool turning blank, the blank was difficult for taking place relative slip with the base plate, has improved the turning precision.

Through setting up the supporting pin to be connected with the base plate slides, when the terminal surface unevenness that the blank is close to the base plate, can make the even blank butt of all supporting pins through the position of adjustment supporting pin, and make blank and base plate keep coaxial, reduced blank and the probability that the relative movement takes place for the base plate, improved the turning precision, reduced the cutting allowance simultaneously, practiced thrift the material.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic view of an exploded structure at a substrate according to example 1 of the present application;

FIG. 3 is a schematic view of the overall structure of embodiment 2 of the present application;

FIG. 4 is a schematic view of an exploded structure at a substrate according to example 2 of the present application;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Description of reference numerals: 100. a frame; 110. a main shaft; 120. a three-jaw chuck; 130. a tool holder; 140. a lead screw; 200. a first clamping mechanism; 210. a substrate; 211. a threaded hole; 212. a through hole; 213. a guide block; 220. a support pin; 221. a hexagonal head; 222. a guide groove; 230. a locking assembly; 231. a first nut; 232. a second nut; 300. a second clamping mechanism; 310. a tailstock; 320. the caudal vertebra.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1:

the embodiment of the application provides a lathe convenient for turning a flange blind plate, and referring to fig. 1, the lathe convenient for turning a flange blind plate includes a machine frame 100, a main shaft 110 is rotatably connected to the machine frame 100, and the main shaft 110 is driven by a driving motor (not shown in the figure). The frame 100 is further provided with a tool rest 130, the tool rest 130 is fixedly connected with a turning tool through a bolt, and when the main shaft 110 rotates, the position of the turning tool can be adjusted by moving the tool rest 130, so that a blank is turned. The main shaft 110 is coaxially and fixedly connected with a three-jaw chuck 120 through a coupler, the three-jaw chuck 120 is provided with a first clamping mechanism 200 for clamping one end face of a blank, and the rack 100 is provided with a second clamping mechanism 300 for clamping the other end face of the blank.

Referring to fig. 1 and 2, the first clamping mechanism 200 includes a substrate 210, the substrate 210 is disposed in a circular cross section, and three clamping jaws of the three-jaw chuck 120 are clamped on an outer circumferential surface of the substrate 210, so that the substrate 210 and the spindle 110 are relatively fixed. In another embodiment, the base plate 210 may be directly coaxially and fixedly connected to the spindle 110 by a coupling.

Referring to fig. 1, the second clamping mechanism 300 includes a tail frame 310 and a tail cone 320, the tail frame 310 is slidably connected to the frame 100 along the axial direction of the main shaft 110, the tail cone 320 is rotatably connected to the tail frame 310, the tail cone 320 is coaxial with the axial center of the main shaft 110, and the tail cone 320 faces the base plate 210. A locking piece for locking the tailstock 310 is arranged between the tailstock 310 and the rack 100, and the locking piece is a lead screw 140 in the embodiment of the application. The axis of the lead screw 140 is parallel to the axis of the main shaft 110, the lead screw 140 is rotatably connected to the rack 100, the tailstock 310 is in threaded connection with the lead screw 140, an operator can drive the tailstock 310 to move by driving the lead screw 140, and when the operator does not drive the lead screw 140 to rotate, the tailstock 310 can be locked on the rack 100.

When holding the blank, the blank is placed between the base plate 210 and the tailstock 310 with both end surfaces of the blank facing the base plate 210 and the tailstock 310, respectively. The operator then rotates the lead screw 140 to slide the tail stock 310 toward the base plate 210, so that the tail cone 320 gradually presses the blank against the base plate 210. After the tail cone 320 and the base plate 210 clamp the blank, the operator stops rotating the lead screw 140, and the tail stock 310 is locked on the rack 100 under the self-locking action of the lead screw 140. The main shaft 110 drives the blank to rotate when rotating, and the outer peripheral surface of the blank clamped by the tail cone 320 and the base plate 210 is in a completely exposed state, so that turning of a turning tool is facilitated.

Referring to fig. 1 and 2, the first clamping mechanism 200 further includes three support pins 220 for supporting the blank from the base plate 210, and the number of the support pins 220 is at least three, and in the embodiment of the present invention, the three support pins 220 are uniformly distributed in the circumferential direction of the base plate 210. The outer circumference of the support pin 220 is provided with an external thread, one end surface of the substrate 210 close to the tailstock 310 is provided with a threaded hole 211, the support pin 220 is in threaded connection with the substrate 210, and the axis of the support pin 220 is parallel to the axis of the substrate 210.

When clamping the blank, an end surface of the blank close to the base plate 210 abuts on the supporting pin 220, so that a gap is formed between the blank and the base plate 210. If the diameter of the blank is smaller than that of the substrate 210, when the turning tool turns the outer peripheral surface of the blank, the turning tool is not easy to interfere with the substrate 210, so that the turning tool is protected, and the substrate 210 is protected.

Referring to fig. 2, the end of the support pin 220 away from the base plate 210 is tapered, and when the blank is pressed against the support pin 220 by the tail cone 320, the end of the support pin 220 close to the blank slightly deforms the end surface of the blank, which is equivalent to the end of the support pin 220 away from the base plate 210 being embedded in the blank. When the turning tool turns the blank, the blank is not easy to slide relative to the substrate 210 due to the turning resistance, and the turning precision is further improved.

Referring to fig. 2, a hexagonal head 221 may be further integrally formed on the support pin 220, and the hexagonal head 221 is coaxially disposed with the support pin 220. If the flatness of the end surface of the blank adjacent to the base plate 210 is low, the coaxiality between the blank and the base plate 210 is reduced when the blank is pressed against the support pins 220 by the tail cone 320. At this time, an operator can finely adjust the supporting pin 220 by using a wrench, so that the supporting pin 220 slides relative to the base plate 210 along the axial direction thereof, and thus the blank can be adjusted to improve the coaxiality between the blank and the base plate 210. If the coaxiality between the blank and the substrate 210 is improved, the cutting allowance of the blank can be reduced, so that the material is saved, the processing time is shortened, and the processing efficiency is improved.

The implementation principle of the lathe convenient to turning flange blind plate of the embodiment of the application is as follows:

when clamping the blank, the blank is placed between the base plate 210 and the tailstock 310, and then the operator rotates the lead screw 140 to move the tailstock 310 toward the base plate 210 until the tail cone 320 presses the blank against the support pin 220. At this time, the operator may detect the coaxiality between the blank and the base plate 210, and if the coaxiality between the blank and the base plate 210 is low, the operator may adjust the length of the support pin 220 protruding from the base plate 210 by screwing the hexagonal head 221, thereby improving the coaxiality between the blank and the base plate 210. After the blank is adjusted, the blank can be turned, and the supporting pin 220 and the tail cone 320 are respectively pressed on two end surfaces of the blank, so that the peripheral surface of the blank is in a completely exposed state, and the turning tool can turn the peripheral surface of the blank conveniently; because the blank and the base plate 210 are not in direct contact, when the turning tool is fed to one end of the blank close to the base plate 210, the turning tool is not easy to interfere with the base plate 210, and therefore the turning tool is protected and the base plate 210 is protected.

Example 2:

referring to fig. 3 and 4, the present embodiment provides a lathe for conveniently turning a flange blind plate, and the present embodiment is different from embodiment 1 in that a lock assembly 230 is disposed between a support pin 220 and a base plate 210, and the support pin 220 is fixedly connected to the base plate 210 through the lock assembly 230.

Referring to fig. 3 and 4, the substrate 210 is formed with a through hole 212 through which the support pin 220 passes, and the support pin 220 is inserted into the through hole 212. The locking assembly 230 includes a first nut 231 and a second nut 232, the support pin 220 has an external thread, the first nut 231 and the second nut 232 are both screwed on the support pin 220, the first nut 231 abuts against an end surface of the substrate 210 close to the three-jaw chuck 120, and the second nut 232 abuts against an end surface of the substrate 210 far from the three-jaw chuck 120.

Referring to fig. 3 and 4, the outer circumferential surface of the support pin 220 is provided with guide grooves 222, the longitudinal direction of the guide grooves 222 is parallel to the longitudinal direction of the support pin 220, and a plurality of guide grooves 222 are uniformly distributed in the circumferential direction of the support pin 220. A plurality of guide blocks 213 are integrally formed on the substrate 210, the guide blocks 213 are disposed on the inner wall of the through hole 212, one guide block 213 corresponds to one guide groove 222, and the guide blocks 213 are engaged in the guide grooves 222.

an operator can adjust the support pin 220 by wrestling the first nut 231 and the second nut 232 with a wrench, and when adjusting the support pin 220, the support pin 220 only slides relative to the substrate 210 without rotating relative to the substrate, thereby improving the clamping accuracy of the blank. Because the external threads of the support pin 220 are stressed when the blank is pressed against the support pin 220 by the tail cone 320, after the external threads of the support pin 220 are stressed and deformed, only the first nut 231, the second nut 232 and the support pin 220 need to be replaced, the substrate 210 is not easily damaged due to the pressing force of the tail cone 320, and the service life of the substrate 210 is prolonged.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A lathe convenient for turning a flange blind plate comprises a rack (100), wherein a main shaft (110) is rotatably connected to the rack (100), and the lathe is characterized in that a first clamping mechanism (200) is arranged on the main shaft (110), a second clamping mechanism (300) is arranged on the rack (100), and the first clamping mechanism (200) and the second clamping mechanism (300) are respectively clamped on two end faces of a blank;

the first clamping mechanism (200) comprises a base plate (210), the base plate (210) is coaxially and fixedly connected to the main shaft (110), the second clamping mechanism (300) comprises a tail frame (310) and a tail vertebra (320), the tail frame (310) is connected with the rack (100) in a sliding mode along the axial direction of the main shaft (110), and the tail vertebra (320) is connected to the tail frame (310) in a rotating mode along the axis of the main shaft (110);

the first clamping mechanism (200) further comprises at least three supporting pins (220), the supporting pins (220) are arranged on one end face, close to the tailstock (310), of the substrate (210), the axis of the supporting pins (220) is coaxial with the axis of the substrate (210), and the supporting pins (220) are uniformly distributed along the circumferential direction of the substrate (210).

2. The lathe for turning the flange blind plate conveniently according to claim 1, is characterized in that: the end of the supporting pin (220) far away from the base plate (210) is arranged in a conical shape.

3. The lathe for turning the flange blind plate conveniently according to the claim 1 or 2, is characterized in that: the supporting pin (220) is connected with the base plate (210) in a sliding mode along the axis of the supporting pin.

4. The lathe for turning the flange blind plate conveniently according to claim 3, wherein: the outer circumferential surface of the supporting pin (220) is provided with an external thread, the base plate (210) is provided with an internal thread, and the supporting pin (220) is in threaded connection with the base plate (210).

5. The lathe for turning the flange blind plate conveniently according to claim 4, wherein: the supporting pin (220) is integrally formed with a hexagonal head (221).

6. The lathe for turning the flange blind plate conveniently according to claim 3, wherein: a locking assembly (230) is arranged between the supporting pin (220) and the substrate (210), the locking assembly (230) comprises a first nut (231) and a second nut (232), an external thread is formed on the outer peripheral surface of the supporting pin (220), the first nut (231) and the second nut (232) are in threaded connection with the supporting pin (220), a through hole (212) for the supporting pin (220) to pass through is formed in the substrate (210), the supporting pin (220) penetrates through the through hole (212), the first nut (231) abuts against one end face, far away from the tailstock (310), of the substrate (210), and the second nut (232) abuts against one end face, close to the tailstock (310), of the substrate (210).

7. The lathe for turning the blind flange plate conveniently according to claim 6, wherein: the base plate (210) is fixedly connected with a guide block (213), the guide block (213) is arranged on the inner wall of the through hole (212), the outer peripheral surface of the supporting pin (220) is provided with a guide groove (222), and the length direction of the guide groove (222) is parallel to the length direction of the supporting pin (220).