CN219403331U - Precise and efficient drilling fixture for ram hole of milling machine - Google Patents

Abstract

The present utility model relates to: the utility model provides a accurate high-efficient boring jig of milling machine ram hole, including rectangular anchor clamps platform, the forked tail locating strip is installed along length direction to anchor clamps platform upper surface, adjust forked tail locating strip is installed to corresponding forked tail locating strip, forked tail locating strip and adjust forked tail locating strip are involuted to be formed with the dovetail cavity that can block the milling machine ram forked tail, install the locating piece in forked tail locating strip and adjust forked tail locating strip one end to the dovetail cavity, open the locating hole on the locating piece, the cartridge has the locating shaft that can restrict milling machine ram main shaft mounting hole in the locating hole, locating shaft one end is provided with the axle head clamp plate, its other end is installed the preforming. Through increasing locating piece, locating hole and locating shaft, adopt the location principle of six point location, improve positioning accuracy, guaranteed milling machine ram hole and main shaft hole straightness that hangs down and hole cylindricity itself, the milling machine ram is difficult for sliding, shakes, designs to have movable tight piece in top, avoids clamping screw direct action to the dovetail face.

Description

Precise and efficient drilling fixture for ram hole of milling machine

Technical Field

The utility model relates to the technical field of milling machine processing, in particular to a precise and efficient drilling fixture for a ram hole of a turret milling machine.

Background

The turret milling machine can also be called a rocker milling machine, rocker milling and universal milling, is a milling machine which drives a workpiece to move by a workbench, drives a cutter to rotate by a high-speed main shaft to cut, has a shape similar to a turret, and mainly comprises main components such as a base, a machine body, a workbench, a ram, a lifting slide seat and the like; the ram is used as a main component of the machine tool, and is generally subjected to artificial aging, scribing, lifting hole drilling, rough and finish milling Yan Weimian, opening milling, boring, drilling, bench work, laser coding, inspection, painting and warehousing; in the drilling process step, a production workshop generally adopts a universal fixture to match with a steel plate for clamping, namely, the upper end surface of a steel plate compression ram is connected with a fixture platform through a bolt, so that the distance is realized; however, in practice, the side surface is free of a jacking device, the second positioning is in an underpositioning state in the processing, and when the feeding speed of the drill bit is high only by the aid of the pressing force, the parts are easy to loosen and deviate, so that the perpendicularity between the parts and the mounting hole of the main rotating shaft does not meet the design requirement, and defective products and even waste products are generated; meanwhile, the bottom adopts a general equal-height block pad (square block) which is not well matched with the dovetail plane.

Disclosure of Invention

The utility model provides a precise and efficient drilling fixture for a ram hole of a turret milling machine.

The specific technical scheme of the utility model is as follows: the utility model provides a accurate high-efficient boring jig of milling machine ram hole, includes rectangular anchor clamps platform, the forked tail locating strip is installed along length direction to anchor clamps platform upper surface, corresponds the forked tail locating strip and installs regulation formula forked tail locating strip, forked tail locating strip and regulation formula forked tail locating strip are involuted and are formed with the dovetail cavity that can block the milling machine ram forked tail, install the locating piece in forked tail locating strip and regulation formula forked tail locating strip one end just to dovetail cavity, it has the locating hole to open on the locating piece, the cartridge has the locating shaft that can restrict milling machine ram main shaft mounting hole in the locating hole, locating shaft one end is provided with the axle end clamp plate, and the preforming is then installed to its other end.

Further, it is preferable that the positioning block is mounted on the jig table through a positioning seat.

Further, preferably, the end, far away from the shaft end pressing plate, of the positioning shaft is provided with threads, and the pressing piece is pressed through a nut.

Further, preferably, a limit dovetail groove is formed in one surface of the dovetail positioning strip, which faces the adjusting dovetail positioning strip.

Further, preferably, the adjustable dovetail positioning strip comprises a fixed seat, and the fixed seat is provided with a movable propping block through an adjusting stud.

Further, it is preferable that the movable tightening block is provided with 2 or more.

The beneficial effects of the utility model are as follows: through increasing locating piece, locating hole and locating shaft, adopt the location principle of six point location, improve positioning accuracy, guaranteed milling machine ram hole and main shaft hole straightness that hangs down and hole cylindricity itself, the milling machine ram is difficult for sliding, shakes, designs to have movable tight piece in top, avoids clamping screw direct action to the dovetail face.

Drawings

FIG. 1 is a schematic perspective view of a precise and efficient drilling jig for milling machine ram holes, wherein a two-dot chain line is adopted to show a milling machine ram, and a state reference diagram is adopted to process the jig;

FIG. 2 is a second perspective view of the precise and efficient drilling fixture for a ram hole of a milling machine;

FIG. 3 is a top view of the precise and efficient drilling fixture for the ram hole of the milling machine;

FIG. 4 is a front view of the precise and efficient drilling fixture for the ram hole of the milling machine;

FIG. 5 is a cross-sectional view of A-A in FIG. 4;

fig. 6 is a cross-sectional view of B-B in fig. 4.

In the figure: 100-milling machine ram, 101-taper shank twist drill, 1-fixture table, 2-dovetail positioning strips, 201-limit dovetail grooves, 3-adjusting dovetail positioning strips, 301-fixed seat, 302-movable propping block, 303-adjusting stud, 4-dovetail groove cavity, 5-positioning seat, 501-positioning block, 502-positioning hole, 6-tabletting, 7-positioning shaft and 701-shaft end pressing plate.

Description of the embodiments

In order to make the technical problems and technical schemes solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the precise and efficient drilling fixture for the ram hole of the milling machine comprises a rectangular fixture platform (1), wherein the rectangular fixture platform 1 is made of HT300 casting materials, so that the vibration resistance is good, and a cavity rib plate is designed into a frame rib, so that the stability is good; phi 50 casting holes are arranged on the periphery, and are also lifting holes.

As shown in fig. 2 and 4, the upper surface of the fixture platform 1 is provided with a dovetail positioning strip 2 along the length direction, and one surface of the dovetail positioning strip 2 facing the adjusting dovetail positioning strip 3 is provided with a limit dovetail groove 201.

An adjustable dovetail positioning strip 3 is arranged corresponding to the dovetail positioning strip 2, and the dovetail positioning strip 2 and the adjustable dovetail positioning strip 3 are combined to form a dovetail groove cavity 4 capable of clamping and fixing a ram dovetail of the milling machine.

The adjusting dovetail positioning strip 3 comprises a fixed seat 301, a movable jacking block 302 is arranged on the fixed seat 301 through an adjusting stud 303, the head of the adjusting stud 303 is of a ball head structure, namely, a ball head bolt (used as a standard part and used for machine tool clamp parts and components, JB/T8007.1-1995) is arranged at the top end of the adjusting stud 303 in a welding or threaded manner, a spherical bayonet is formed on the movable jacking block 302, and a ball head is forcefully clamped into and embedded into the spherical bayonet; of course, other rotation connection modes can be adopted, such as a design that a bearing mounting hole is formed in the movable propping block 302, and after a bearing is mounted, the top end of the adjusting stud 303 is inserted into the inner ring of the bearing, and the two are all of the same design; the movable propping block 302 is connected with the adjusting stud 303 in a ball stud or other rotatable connection mode, so that when the adjusting stud 303 rotates, the movable propping block 302 is prevented from following rotation, in use, the adjusting stud 303 can adjust the movable propping block 302 to be far away from or away from the dovetail positioning strip 2 through the threads of the threaded hole of the fixing seat 301, and therefore rapid fastening and clamping of the dovetail base of the milling machine ram are realized; the movable jack blocks 302 are provided with 2 or more.

As shown in fig. 2, 3 and 5, a positioning block 501 is installed at one end of the dovetail positioning strip 2 and one end of the adjusting dovetail positioning strip 3, which are opposite to the dovetail groove cavity 4, the positioning block 501 is of a hollow sheet metal structure, the upper part of the positioning block is of an arc, the lower end of the positioning block is welded on a positioning seat 5, and the positioning block 5 is connected with the clamp table 1 through a screw.

The positioning block 501 is provided with a positioning hole 502, the positioning hole 502 is perpendicular to the end face of the positioning block 501, and is designed as a through hole, and a positioning shaft 7 capable of limiting the installation hole of the ram main shaft of the milling machine is inserted into the positioning hole 502, as shown in fig. 4.

One end of the positioning shaft 7 is provided with a shaft end pressing plate 701, the other end of the positioning shaft is provided with a pressing plate 6, the end, far away from the shaft end pressing plate 701, of the positioning shaft 7 is provided with threads, and the pressing plate 6 is pressed through a nut; the spindle hole section is stable through the shaft end pressing plate 701 and the pressing plate 6, shake or deflection is not easy to generate during drilling, and meanwhile, the positioning shaft 7 is arranged to ensure the line tolerance of the spindle hole.

The numerical control vertical drill Z5140A of the machine tool is processed, the clamp utilizes a workbench to the greatest extent, the length of the clamp body is not much different from the length of the largest ram, and the clamp can cover 10 kinds of ram processing, and mainly ensures that the perpendicularity of a phi 18H9 hole and a phi 29H9 hole of a main shaft is 0.04 and the cylindricity of the hole is 0.03; therefore, the phi 29H9 hole is needed to be added with a mandrel for positioning; the positioning shaft 7 is designed to be in clearance fit with the positioning hole 502 as H8/H7.

The technical scheme of the utility model is matched with the boring clamp of the milling machine ram main shaft mounting hole and the rapid and stable clamp for milling machine ram dovetail seat processing developed by enterprises, so that the ram processing efficiency can be effectively improved, the quality of the whole process is improved, the processing efficiency and the quality of parts are integrally improved, the clamp has complete independent intellectual property rights, and the clamp is independently developed by technical staff of the enterprises.

While the utility model has been described in detail in connection with specific and preferred embodiments, it will be understood by those skilled in the art that the utility model is not limited to the foregoing embodiments, but is intended to cover modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. The utility model provides a accurate high-efficient boring grab of milling machine ram hole, its characterized in that, including rectangular anchor clamps platform (1), dovetail locating strip (2) are installed along length direction to anchor clamps platform (1) upper surface, correspond dovetail locating strip (2) and install regulation type dovetail locating strip (3), dovetail locating strip (2) and regulation type dovetail locating strip (3) are involuted and are formed with dovetail cavity (4) that can block the milling machine ram forked tail, install locating piece (501) right dovetail cavity (4) in dovetail locating strip (2) and regulation type dovetail locating strip (3) one end, open locating hole (502) on locating piece (501), cartridge has locating shaft (7) that can restrict milling machine ram main shaft mounting hole in locating hole (502), locating shaft (7) one end is provided with axle head clamp plate (701), and tabletting (6) are then installed to its other end.

2. The precise and efficient drilling fixture for the ram holes of the milling machine according to claim 1, wherein the positioning block (501) is arranged on the fixture table (1) through the positioning seat (5).

3. The precise and efficient drilling fixture for the ram holes of the milling machine according to claim 1 or 2, wherein the end, far away from the shaft end pressing plate (701), of the positioning shaft (7) is provided with threads, and the pressing plate (6) is pressed by a nut.

4. The precise and efficient drilling fixture for the ram holes of the milling machine, as claimed in claim 1, is characterized in that a limit dovetail groove (201) is formed in one surface of the dovetail positioning strip (2) facing the adjusting dovetail positioning strip (3).

5. The precise and efficient drilling fixture for the ram holes of the milling machine according to claim 4, wherein the adjusting type dovetail positioning strip (3) comprises a fixed seat (301), and a movable jacking block (302) is arranged on the fixed seat (301) through an adjusting stud (303).

6. The precise and efficient drilling fixture for milling machine ram holes, as claimed in claim 5, wherein more than 2 movable jacking blocks (302) are provided.