CN213225078U

CN213225078U - Major axis turning clamping device

Info

Publication number: CN213225078U
Application number: CN202021246075.5U
Authority: CN
Inventors: 陈艳兴; 陈亦蓁
Original assignee: Yangzhou Baoxuan Machinery Co Ltd
Current assignee: Yangzhou Baoxuan Machinery Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-05-18
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a major axis car excircle clamping device, including lathe slide rail and sword platform, be equipped with clamping device on the lathe slide rail, clamping device includes the centre gripping slide rail, the centre gripping slide rail with lathe slide rail registrates, clamping device follows lathe slide rail direction freely slides, fixedly connected with support frame on the centre gripping slide rail, be equipped with a plurality of back shafts on the support frame, a plurality of back shafts support and centre gripping each other on the major axis, and the common centre gripping major axis of a plurality of back shafts forms the strong point, and then reduces the eccentricity of major axis turning in-process.

Description

Major axis turning clamping device

Technical Field

The utility model relates to an anchor clamps, concretely relates to lathe fixture.

Background

For the turning processing of the inner circle and the outer circle of a long-shaft cylindrical workpiece, the currently mainly adopted clamps only clamp the end part of the workpiece, the proportion of the clamping part in the overall length of the workpiece is very small, and the clamping mode has obvious defects: on one hand, due to the large length-diameter ratio of the long-shaft workpiece, eccentric moment is easy to generate when the position far away from the clamping part is machined, so that the machining precision of the workpiece is influenced; on the other hand, since most of the acting force is concentrated on the clamped part of the workpiece, stress concentration is easily generated, and the workpiece is damaged. The defects are particularly remarkable in the process of preparing the hard alloy by adopting a powder metallurgy mode, and because the hardness of the hard alloy is high and the processing difficulty is extremely high after a finished product is sintered, a workpiece needs to be accurately processed before sintering, and the processing precision requirement is extremely high; and the workpiece before sintering has poor strength and is easy to damage, so that the existing turning clamp cannot well meet the application requirements when preparing the long-axis cylindrical hard alloy workpiece.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a long axis excircle turning clamping device capable of reducing the eccentricity of a long axis.

The utility model discloses a following technical scheme realizes: the long shaft cylindrical turning clamping device comprises a machine tool slide rail and a cutter table, wherein the slide rail is provided with a clamping device, the clamping device comprises a clamping slide rail, the clamping slide rail is sleeved with the machine tool slide rail, a support frame is fixedly connected onto the clamping slide rail, the support frame is provided with a plurality of support shafts, and the support shafts mutually support and clamp on a long shaft.

Preferably, be equipped with the back shaft on the support frame, the back shaft divide into first back shaft, second back shaft and third back shaft, first back shaft with second back shaft fixed connection is in on the support frame, third back shaft bolted connection is in on the support frame, first back shaft with fixedly connected with stiffener between the second back shaft.

Preferably, the support shaft comprises a support rod, one end of the support rod is fixedly connected with a fork, a bearing is connected to the fork through a bolt, and the circumferential side face of the bearing is in contact with the long shaft.

Preferably, the clamping device is divided into a first clamping device and a second clamping device, and the first clamping device and the second clamping device are distributed on two sides of the tool post.

Compared with the prior art, the utility model discloses an at sword platform both ends installation clamping device, make the major axis when the turning, the clamping device both ends form the strong point, reduce turning in-process major axis eccentricity.

Drawings

FIG. 1 is a schematic view of the installation position of the excircle turning clamping device for the long axis of the structure of the present invention;

FIG. 2 is a schematic view of the structure clamping device of the present invention

In the figure: 1. a machine tool slide rail; 2. clamping the slide rail; 3. a support frame; 4. a first support shaft; 5. a third support shaft; 6. a long axis; 7. a second support shaft; 8. a reinforcing bar; 10. a tool post; 50. a support bar; 51. a fork; 52. a bearing; 100. a first holding device; 200. a second holding device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-2: the utility model provides a 6 turning circle clamping device of major axis, includes lathe slide rail 1 and sword platform 10, be equipped with clamping device on the lathe slide rail 1, clamping device includes centre gripping slide rail 2, centre gripping slide rail 2 with 1 registrates of lathe slide rail, clamping device follows 1 direction of lathe slide rail freely slides, fixedly connected with support frame 3 on the centre gripping slide rail 2, be equipped with a plurality of back shafts on the support frame 3, a plurality of back shafts support each other and the centre gripping is on major axis 6, and the common centre gripping major axis 6 of a plurality of back shafts forms the strong point, and then reduces the eccentricity of 6 turning in-process of major axis.

Be equipped with the back shaft on the support frame 3, the back shaft divide into first back shaft 4, second back shaft 7 and third back shaft 5, first back shaft 4 with 7 fixed connection of second back shaft are in on the

support frame

3, 5 bolted connection of third back shaft are in on the support frame 3, control through adjusting bolt third back shaft 5 sticiss and fasten on major axis 6, first back shaft 4 with fixedly connected with stiffener 8 between the second back shaft 7, stiffener 8 can support first back shaft 4 with second back shaft 7 prevents first back shaft 4 with 7 pressurized deformations of second back shaft.

The supporting shaft comprises a supporting rod 50, one end of the supporting rod 50 is fixedly connected with a fork frame 51, a bearing 52 is connected to the fork frame 51 in a plug-in mode, the circumferential side face of the bearing 52 is in contact with the long shaft 6, the bearing 52 rotates along with the rotation of the long shaft, and the first supporting shaft 4, the second supporting shaft 7 and the bearing 52 of the third supporting shaft 5 support the long shaft 6 from three directions, so that the long shaft 6 is fixed on a supporting point and can rotate freely.

The clamping device is divided into a first clamping device 100 and a second clamping device 200, the first clamping device 100 and the second clamping device 200 are distributed on two sides of the tool post 10, and therefore the concentricity and the non-deflection of the long shaft 6 between the first clamping device 100 and the second clamping device 200 are guaranteed when the tool post 10 rotates.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a major axis excircle turning clamping device, includes lathe slide rail and sword platform, its characterized in that: the clamping device is arranged on the slide rail and comprises a clamping slide rail, the clamping slide rail is sleeved with the machine tool slide rail, a support frame is fixedly connected onto the clamping slide rail, a plurality of support shafts are arranged on the support frame, and the support shafts mutually support and clamp the long shaft.

2. The major axis cylindrical turning clamping device of claim 1, wherein: be equipped with the back shaft on the support frame, the back shaft divide into first back shaft, second back shaft and third back shaft, first back shaft with second back shaft fixed connection is in on the support frame, third back shaft bolted connection is in on the support frame, first back shaft with fixedly connected with stiffener between the second back shaft.

3. The major axis cylindrical turning clamping device of claim 2, wherein: the back shaft contains the bracing piece, bracing piece one end fixedly connected with crotch, the last latch connection of crotch has the bearing, the circumference side and the major axis contact of bearing.

4. The major axis cylindrical turning clamping device of claim 1, wherein: the clamping device is divided into a first clamping device and a second clamping device, and the first clamping device and the second clamping device are distributed on two sides of the tool post.