CN217530066U

CN217530066U - Automatic centering positioning fixture for middle rotating seat

Info

Publication number: CN217530066U
Application number: CN202221168573.1U
Authority: CN
Inventors: 田斌; 孙荣健; 廖丰
Original assignee: Hubei Shuanghu Machinery Co ltd
Current assignee: Hubei Shuanghu Machinery Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-04
Anticipated expiration: 2032-05-16

Abstract

The utility model relates to a frock clamp technical field especially relates to a positioning fixture in automation for middle rotation seat, and it is including being used for the fixed disc base of lathe jack catch, disc base vertical fixation has the bottom plate, the bottom plate is provided with the locating pin that inserts work piece bottom round hole, the disc base is in the top both sides of bottom plate respectively are provided with clamp plate mount pad and clamp plate fixing base, clamp plate mount pad articulates the clamp plate, the clamp plate fixing base articulates there is the screw rod, the screw rod lock set up in the notch of clamp plate and screw in nut compress tightly the clamp plate, the centre of clamp plate is rotated and is connected with V-arrangement iron. The utility model discloses simple structure, clamping convenient and fast rotates the seat in the middle of can fixing well to improve clamping efficiency.

Description

Automatic centering positioning fixture for middle rotating seat

Technical Field

The utility model relates to a frock clamp technical field especially relates to a positioning fixture in automation branch for middle rotation seat.

Background

As shown in fig. 1, the intermediate rotating base comprises a main cylinder and a mounting plate below the main cylinder, and the intermediate rotating base is provided with screw teeth along the axial direction, so that when each stepped groove on the end surface of the cylinder is turned, the intermediate rotating base is difficult to be pressed and fixed by a common clamp.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, and provide an automatic centering positioning fixture for middle rotation seat, it adopts the V-arrangement iron of activity to block the drum to make the automatic normal position of work piece, and fix the work piece.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an automatic positioning fixture that divides for middle rotating seat, is including being used for the fixed disc base of lathe jack catch, disc base vertical fixation has the bottom plate, the bottom plate is provided with the locating pin that inserts work piece bottom round hole, disc base is in the top both sides of bottom plate respectively are provided with clamp plate mount pad and clamp plate fixing base, clamp plate mount pad hinge joint clamp plate, the clamp plate fixing base articulates there is the screw rod, the screw rod lock set up in the notch of clamp plate and screw in nut compress tightly the clamp plate, the centre of clamp plate is rotated and is connected with V-arrangement iron.

Furthermore, the V-shaped iron is in clearance fit with a pin shaft fixed on the pressing plate, and the thickness of the V-shaped iron is larger than 30mm.

Further, the V-shaped iron is provided with a notch with an outward opening, and the notch is a V-shaped groove or a trapezoidal groove.

Furthermore, the bottom plate is provided with an auxiliary positioning plate on each of two sides of the positioning pin. The auxiliary positioning plate is clamped with the mounting plates on two sides of the middle rotating seat, so that the phenomenon that a workpiece is displaced due to overlarge cutting force during machining is avoided.

Furthermore, the disc base is provided with a weight-reducing fabrication hole.

The utility model has the advantages that: the utility model provides a positioning fixture in automation for middle rotation seat, its is including the disc base that is used for the lathe jack catch to fix, disc base vertical fixation has the bottom plate, the bottom plate is provided with the locating pin that inserts work piece bottom round hole, the disc base is in the top both sides of bottom plate respectively are provided with clamp plate mount pad and clamp plate fixing base, clamp plate mount pad hinge joint clamp plate, the clamp plate fixing base articulates there is the screw rod, the screw rod lock set up in the notch of clamp plate and screw in nut compress tightly the clamp plate, the centre of clamp plate is rotated and is connected with V-arrangement iron. The utility model discloses simple structure, clamping convenient and fast rotates the seat in the middle of can fixing well to improve clamping efficiency.

Drawings

FIG. 1 is a front view of an intermediate rotatable mount;

fig. 2 is a perspective view of the automatic centering positioning fixture for the middle rotary seat of the present invention.

Description of reference numerals:

1-disc base, 2-bottom plate, 3-positioning pin, 4-pressing plate mounting base, 5-pressing plate fixing base, 6-pressing plate, 7-screw rod, 8-V-shaped iron, 9-auxiliary positioning plate.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and the embodiments, and is not intended to limit the scope of the invention.

As shown in fig. 2, the automatic centering positioning fixture for the middle rotating base of the embodiment includes a disc base 1 for fixing a lathe jaw, a bottom plate 2 is vertically fixed on the disc base 1, a positioning pin 3 inserted into a round hole at the bottom of a workpiece is arranged on the bottom plate 2, a pressing plate mounting base 4 and a pressing plate fixing base 5 are respectively arranged on two sides of the upper portion of the bottom plate 2 of the disc base 1, the pressing plate mounting base 4 is hinged to a pressing plate 6, the pressing plate fixing base 5 is hinged to a screw rod 7, the screw rod 7 is buckled to a notch of the pressing plate 6 and screwed into a nut to press the pressing plate 6, and a V-shaped iron 8 is rotatably connected to the middle of the pressing plate 6.

The embodiment is directed to a special machining positioning fixture for the middle rotating base shown in fig. 1, and the fixture clamps a cylinder of the middle rotating base from the upper side by arranging the V-shaped iron 8, and cooperates with the bottom plate 2 and the positioning pin 3 below to limit the movement and rotation of the middle rotating base. During clamping, the middle rotating seat is firstly sleeved with the positioning pin 3 and placed on the bottom plate 2, then the V-shaped iron 8 is clamped with the middle rotating seat along with the pressing of the pressing plate 6 so that the middle rotating seat can be automatically centered and positioned, and even if the cylinder axis of the middle rotating seat is automatically vertical to the disc base 1.

In order to prevent the middle rotating seat from shifting when the pressing plate 6 is pressed downwards, the thickness of the V-shaped iron 8 is at least 1 time greater than the thread pitch of the periphery of the cylinder, and the thickness of the V-shaped iron 8 in the embodiment is greater than 30mm; and in order to prevent the V-shaped iron 8 from deflecting, the V-shaped iron 8 is in clearance fit with a pin shaft fixed on the pressing plate 6.

One face of the V-shaped iron 8 facing downwards is provided with an opening facing outwards, namely a wedge-shaped notch with an outer opening width larger than an inner opening, and the notch can be arranged in a V shape or a trapezoid shape according to the actual height of the V-shaped iron 8.

Since only a short section of the middle rotary seat cylinder can be clamped by the V-shaped iron 8, when the end face of the cylinder is machined, if the cutting force is too large, the middle rotary seat may be displaced, and the machining error is too large, in this embodiment, the bottom plate 2 is provided with one auxiliary positioning plate 9 on each side of the positioning pin 3. The auxiliary positioning plate 9 can be positioned, installed and fixed after the middle rotating base is clamped, so that the auxiliary positioning plate 9 abuts against the installation plate of the middle rotating base from the inner side as much as possible.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a positioning fixture in automatic branch for middle rotating seat which characterized in that: including the disc base that is used for the lathe jack catch to fix, disc base vertical fixation has the bottom plate, the bottom plate is provided with the locating pin that inserts work piece bottom round hole, disc base is in the top both sides of bottom plate respectively are provided with clamp plate mount pad and clamp plate fixing base, clamp plate mount pad hinge joint clamp plate, clamp plate fixing base articulates there is the screw rod, the screw rod lock set up in the notch of clamp plate and screw in nut compress tightly the clamp plate, the centre of clamp plate is rotated and is connected with V-arrangement iron.

2. An automatic centering and positioning fixture for an intermediate rotary seat according to claim 1, characterized in that: the V-shaped iron is in clearance fit with a pin shaft fixed on the pressing plate, and the thickness of the V-shaped iron is larger than 30mm.

3. The automatic centering positioning fixture for the middle rotating seat according to claim 1, characterized in that: the V-shaped iron is provided with a notch with an outward opening, and the notch is a V-shaped groove or a trapezoidal groove.

4. An automatic centering and positioning fixture for an intermediate rotary seat according to claim 1, characterized in that: the bottom plate is provided with an auxiliary positioning plate on each of two sides of the positioning pin.

5. The automatic centering positioning fixture for the middle rotating seat according to claim 1, characterized in that: the disc base is provided with a weight-reducing fabrication hole.