CN217596522U

CN217596522U - Hollow die-casting base numerical control lathe clamping and positioning mechanism

Info

Publication number: CN217596522U
Application number: CN202221544332.2U
Authority: CN
Inventors: 谌晓勇; 周广亮; 朱海建
Original assignee: Kunshan Yanyong Precision Die Casting Co ltd
Current assignee: Kunshan Yanyong Precision Die Casting Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-10-18
Anticipated expiration: 2032-06-20

Abstract

The utility model relates to a hollow die-casting base numerical control lathe clamping and positioning mechanism, which comprises a chuck seat, a clamping jaw and a locking and positioning ring; the clamping jaws are movably arranged on a chuck seat, and the chuck seat is coaxially connected with a main shaft of the numerical control lathe; the clamping jaw is provided with a positioning expanding groove, an inner arc-shaped groove and a clamping block, and the clamping block is detachably connected with the clamping jaw; the locking positioning ring is detachably connected with the clamping block and comprises a ring body, a yielding groove, a positioning inclined plane, a positioning cambered surface and a avoiding groove, wherein the ring body is in a ring shape, and a broken groove is formed in the ring body. The utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism carries out the profile modeling development to the structure of the die-casting base work piece of fretwork type structure, realizes the firm location clamping of die-casting base work piece, can not appear the displacement and the phenomenon that drops under high-speed rotatory and processing atress condition, ensures going on smoothly of turning round and end face milling.

Description

Hollow die-casting base numerical control lathe clamping and positioning mechanism

Technical Field

The utility model relates to a die casting processing field, concretely relates to fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism.

Background

After the die casting is finished, finish machining, such as turning, end face milling, drilling, polishing and the like, is required to be performed on the die casting.

For turning and end face milling, operation is mostly performed on a numerically controlled lathe. The die-casting base workpiece shown in fig. 5 has a complicated structure and a two-layer hollow structure, so that the die-casting base workpiece cannot be directly positioned and clamped on a chuck of a numerically controlled lathe, and a special clamping and positioning mechanism needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at:

the clamping and positioning mechanism is designed for the hollow die-casting base numerically-controlled lathe, copying development is carried out on the structure of a die-casting base workpiece with a hollow structure, stable positioning and clamping of the die-casting base workpiece are achieved, the phenomenon of displacement and falling cannot occur under the conditions of high-speed rotation and processing stress, and smooth turning and end face milling are guaranteed.

In order to achieve the above object, the present invention provides the following technical solutions:

a clamping and positioning mechanism of a hollow die-casting base numerical control lathe comprises a chuck seat, a clamping jaw and a locking and positioning ring; the clamping jaw is movably arranged on a chuck seat, and the chuck seat is coaxially connected with a main shaft of the numerical control lathe; the clamping jaw is provided with a positioning expanding groove, an inner arc-shaped groove and a clamping block, and the clamping block is detachably connected with the clamping jaw; the locking positioning ring is detachably connected with the clamping block and comprises a ring body, a yielding groove, a positioning inclined plane, a positioning cambered surface and a avoiding groove, wherein the ring body is in a ring shape, and a broken groove is formed in the ring body.

Furthermore, the positioning expanding groove is of an expanding-mouth structure and is communicated with the inner arc-shaped groove; the fixture block is connected with a position close to the inner arc-shaped groove through a screw, and the fixture block is protruded relative to the wall surface of the inner arc-shaped groove.

Furthermore, the locking and positioning ring is of an integrally formed structure and is detachably connected with the three clamping blocks through screws in the countersunk holes.

Furthermore, the abdicating groove is specifically positioned on the outer circumferential wall of the ring body, the breaking groove is positioned in one of the abdicating grooves, and the direction of the breaking groove extends along the direction of the central axis of the ring body.

Furthermore, the abdicating grooves and the counter sink holes are arranged in a circumferential array relative to the central axis of the ring body; the positioning inclined plane and the positioning cambered surface are positioned at the transition position of the outer circumferential wall and the end surface of the ring body.

Furthermore, the positioning inclined plane corresponds to the positioning cambered surface in position, and the avoiding groove is positioned between the positioning inclined plane and the positioning cambered surface.

The beneficial effects of the utility model are that: the utility model provides a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism, carries out the profile modeling development to the structure of the die-casting base work piece of fretwork type structure, designs the location and expands groove, interior arc wall, fixture block and locking holding ring, realizes the firm location clamping of die-casting base work piece on the numerical control lathe, can not appear the displacement and the phenomenon that drops under high-speed rotation and the processing atress condition to ensure going on smoothly that turning circle and terminal surface mill, reduce the defective index.

Drawings

Fig. 1 is the utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism clamping die-casting base's state diagram.

Fig. 2 is the utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism's overall structure schematic diagram.

Fig. 3 is the utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism's part schematic structure.

Fig. 4 is the utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism's locking holding ring sketch map.

Fig. 5 is the utility model relates to a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism's die-casting base sketch map.

In the figure: 1. a chuck base; 2. a claw; 21. positioning and expanding the groove; 22. an inner arc-shaped groove; 3. a clamping block; 4. locking the positioning ring; 41. a ring body; 42. breaking the groove; 43. a yielding groove; 44. a countersunk hole; 45. positioning the inclined plane; 46. positioning the arc surface; 47. avoiding a position groove; 5. and a die-casting base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail 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 invention.

Referring to fig. 1 to 5, a clamping and positioning mechanism of a hollow die-casting base numerically controlled lathe comprises a chuck base 1, a jaw 2 and a locking and positioning ring 4; the clamping jaw 2 is movably arranged on the chuck seat 1, the chuck seat 1 is coaxially connected with a main shaft of the numerical control lathe, and the main shaft of the numerical control lathe drives the chuck seat 1 to rotate; the clamping jaw 2 is provided with a positioning expanding groove 21, an inner arc-shaped groove 22 and a clamping block 3, the clamping block 3 is detachably connected with the clamping jaw 2, the clamping block 3 is used for clamping the expanding part of the die-casting base 5, and the positioning expanding groove 21 and the inner arc-shaped groove 22 are used for positioning the expanding part of the die-casting base 5; locking holding ring 4 is connected with fixture block 3 is detachable, locking holding ring 4 includes ring body 41, the groove 43 of stepping down, location inclined plane 45, location cambered surface 46 and keeps away a groove 47, and locking holding ring 4 is used for locking the location to die-casting base 5, avoids die-casting base 5 to take place the displacement and drop, ring body 41 is ring shape and is provided with the broken groove 42 on the ring body 41, and the existence of broken groove 42 makes ring body 41 become C shape, has certain elasticity, scalable regulation to make things convenient for die-casting base 5's ring portion card on location inclined plane 45 and location cambered surface 46.

The positioning expanding groove 21 is of an expanding-mouth structure and is designed for the expanding part of the die-casting base 5 in a copying manner, and the positioning expanding groove 21 is communicated with the inner arc-shaped groove 22; the fixture block 3 is connected with a position close to the inner arc-shaped groove 22 through a screw, and the fixture block 3 protrudes relative to the wall surface of the inner arc-shaped groove 22, so that the flaring part of the die-casting base 5 can be clamped.

The locking positioning ring 4 is of an integrally formed structure, and the locking positioning ring 4 is detachably connected with the three clamping blocks 3 through screws in the countersunk holes 44 to form uniform locking and uniform stress.

The abdicating groove 43 is specifically located on the outer circumferential wall of the ring body 41, the breaking groove 42 is located in one of the abdicating grooves 43, and the direction of the breaking groove 42 extends along the central axis direction of the ring body 41, so that the ring body 41 has a certain degree of elastic expansion and contraction capability, and the die-casting base 5 is convenient to place and take out.

The abdicating grooves 43 and the counter sink holes 44 are arranged in a circumferential array relative to the central axis of the ring body 41; the positioning inclined surface 45 and the positioning cambered surface 46 are located at the transition position of the outer circumferential wall and the end surface of the ring body 41, and both the positioning inclined surface 45 and the positioning cambered surface 46 are used for positioning the ring part of the die-casting base 5.

The position of location inclined plane 45 and location cambered surface 46 is corresponding, and keep away the groove 47 and be located between location inclined plane 45 and the location cambered surface 46, keep away the groove 47 and be used for stepping down to the processing deckle edge that probably exists on the ring portion of die-casting base 5, avoid deckle edge to lead to the location not accurate.

The utility model discloses a theory of operation does: firstly, screwing out a screw in a counter bore 44 on the locking positioning ring 4, detaching the locking positioning ring 4, and then detaching the fixture block 3 to realize abdication;

then, the ring body 41 of the locking positioning ring 4 is pressed and contracted to be placed into the annular part of the die-casting base 5, and the annular part is embedded into a groove formed by the positioning inclined plane 45 and the positioning cambered surface 46;

then, placing the flaring part of the die-casting base 5 between the three clamping jaws 2, embedding the flaring part of the die-casting base 5 into the positioning flaring groove 21 and the inner arc-shaped groove 22, locking the clamping block 3, and realizing the positioning of the flaring part of the die-casting base 5;

put into the countersunk hole 44 on the ring body 41 with the screw to locking realizes locking the fixed connection of holding ring 4 and fixture block 3, so far realizes the location clamping to die-casting base 5, avoids die-casting base 5 to take place the displacement or the bad phenomenon that drops in the course of working, reduces the defective rate.

The above examples are provided for further illustration of the present invention, but do not limit the present invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. The utility model provides a fretwork type die-casting base numerical control lathe presss from both sides tight positioning mechanism which characterized in that: comprises a chuck seat (1), a jaw (2) and a locking positioning ring (4); the clamping jaws (2) are movably arranged on the chuck seat (1), and the chuck seat (1) is coaxially connected with a main shaft of the numerical control lathe; the clamping jaw (2) is provided with a positioning expanding groove (21), an inner arc-shaped groove (22) and a clamping block (3), and the clamping block (3) is detachably connected with the clamping jaw (2); locking holding ring (4) and fixture block (3) detachable connection, locking holding ring (4) include ring body (41), groove of stepping down (43), location inclined plane (45), location cambered surface (46) and keep away groove (47), ring body (41) are the ring shape and are provided with disconnected groove (42) on ring body (41).

2. The hollow die-casting base numerical control lathe clamping and positioning mechanism of claim 1, which is characterized in that: the positioning expanding groove (21) is of an expanding-mouth structure, and the positioning expanding groove (21) is communicated with the inner arc-shaped groove (22); the clamping block (3) is connected with a position close to the inner arc-shaped groove (22) through a screw, and the clamping block (3) is protruded relative to the wall surface of the inner arc-shaped groove (22).

3. The hollow die-casting base numerical control lathe clamping and positioning mechanism of claim 2, which is characterized in that: locking holding ring (4) are integrated into one piece formula structure to locking holding ring (4) are connected with three fixture block (3) are detachable through the screw in counter sink (44).

4. The hollow die-casting base numerical control lathe clamping and positioning mechanism of claim 3, which is characterized in that: the abdicating groove (43) is specifically positioned on the outer circumferential wall of the ring body (41), the breaking groove (42) is positioned in one of the abdicating grooves (43), and the direction of the breaking groove (42) extends along the central axis direction of the ring body (41).

5. The hollow die-casting base numerical control lathe clamping and positioning mechanism of claim 4 is characterized in that: the abdicating grooves (43) and the counter bores (44) are arranged in a circumferential array relative to the central axis of the ring body (41); the positioning inclined plane (45) and the positioning arc surface (46) are positioned at the transition position of the outer circumferential wall and the end surface of the ring body (41).

6. The hollow die-casting base numerical control lathe clamping and positioning mechanism of claim 5, characterized in that: the positioning inclined plane (45) corresponds to the positioning cambered surface (46), and the avoiding groove (47) is positioned between the positioning inclined plane (45) and the positioning cambered surface (46).