Center clamp for machining side hole of fixing ring
By designing an internal and external clamping structure in the machining center fixture for the fixed ring side hole, and using a motor and lifting assembly to control the movement of the jaws, the problem of uneven clamping force distribution in the three-jaw fixture was solved, thus improving machining accuracy and stability.
Patent Information
- Application Number
- CN202520310686.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing three-jaw chucks cannot simultaneously clamp inside and outside the machined side hole of the fixed ring, resulting in uneven distribution of clamping force, reduced centering accuracy, and affecting machining accuracy.
A center fixture for machining side holes of a fixed ring is designed. It uses a first support member connected to three sets of first jaws. The first and second adjustment components achieve internal and external clamping. The movement and positioning of the jaws are controlled by a motor and a lifting component. The number of constraint points is increased to improve stability.
It achieves internal and external clamping, increases the number of constraint points of the fixed ring, improves machining accuracy, can resist cutting forces and vibrations, maintains the stability of the fixed ring, and improves the accuracy of side hole machining.
Smart Images
Figure CN223776604U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fixture, specifically for the fixed ring side hole machining center fixture. BACKGROUND
[0002] In the field of mechanical processing, the machining of the fixed ring side hole is a common task, and the fixture as the key tool to ensure the machining precision and the stability of the workpiece is crucial in design rationality, at present, the commonly used three-jaw fixture plays an important role in the fixed ring side hole machining center, and the three-jaw fixture mainly has two clamping modes: outer clamping and inner clamping.
[0003] Although the three-jaw fixture is widely used in mechanical processing, its limitations gradually appear in the machining process of the fixed ring side hole, the three-jaw fixture cannot clamp from the inside and outside at the same time, which leads to the problem of uneven clamping force distribution when clamping the fixed ring, and the centering accuracy of the three-jaw fixture is affected by the wear of the claw part, and the centering accuracy will gradually decrease after long-term use, for the fixed ring side hole machining with high coaxiality requirement, this accuracy decline may lead to the increase of machining error, therefore, we propose the fixed ring side hole machining center fixture. SUMMARY
[0004] The utility model aims at providing the fixed ring side hole machining center fixture to solve the problem in the above background art.
[0005] In order to achieve the above object, the utility model provides the following technical scheme: the fixed ring side hole machining center fixture, including first support piece, the first support piece is circularly equidistantly connected with three groups of first clamping claws through sliding connection, three groups of first clamping claws can realize centering tension through first adjusting assembly, and the top end of each group of first clamping claws is connected with a group of first limit seat through plug-in connection, each group of first limit seat is connected with a group of second clamping claws that can slide, the second clamping claw is connected with the output end of motor through second adjusting assembly, and the motor is connected with lifting assembly.
[0006] Preferably, the second adjusting assembly includes a first sliding block, a turntable and a first sliding groove, one end of each group of second clamping claws is installed with a group of first sliding blocks, the first sliding block can slide along the first sliding groove of the turntable, the turntable is connected with the output end of motor, and the motor is connected with the lifting assembly.
[0007] Preferably, the lifting assembly includes a second limit seat and a first electric push rod, the motor is installed at the bottom end of the second limit seat, the two ends of the second limit seat are connected with the output end of a group of first electric push rods respectively, and the first electric push rod is connected with the first support piece.
[0008] Preferably, the first adjusting assembly comprises connecting rods, a first connecting seat, a second connecting seat and a second electric push rod, the inner side of each group of the first clamping jaws is hinged with two groups of the connecting rods, the other end of the two groups of the connecting rods is hinged with the first connecting seat, the first connecting seat is slidingly connected with the second connecting seat, and the bottom end thereof is connected with the output end of the second electric push rod, the second connecting seat is installed on the upper surface of the first supporting piece, and the second electric push rod is installed on the lower surface of the first supporting piece.
[0009] Preferably, the bottom end of each group of the first clamping jaws is installed with a group of second sliding blocks, and the first supporting piece is provided with second sliding grooves corresponding to the second sliding blocks.
[0010] Preferably, the first supporting piece is installed on one end of the upper surface of a second supporting piece.
[0011] Compared with the prior art, the utility model has the advantages that:
[0012] 1、The utility model discloses a first adjusting assembly is used for driving the first clamping jaw to move, and a second adjusting assembly is used for driving the second clamping jaw to move, so that the first clamping jaw and the second clamping jaw can clamp the fixing ring from the inside and the outside respectively, and the first limiting seat and the second limiting seat can be used for placing the fixing ring.
[0013] 2、The first sliding block is a cylindrical T-shaped piece, the first sliding groove is an arc-shaped groove, the first sliding block penetrates the first sliding groove and is connected with the second clamping jaw, the second clamping jaw can not be separated from the rotating disc, the second clamping jaw can be lifted when the motor is lifted, the rotating disc can be rotated by starting the motor, the first sliding block slides along the first sliding groove, the second clamping jaw can be moved along the first limiting seat to the center of the motor, the first clamping jaw can clamp the fixing ring from the outside, the second limiting seat can be lifted by the extension of the first electric push rod, the motor and the rotating disc can be lifted, the second clamping jaw and the first limiting seat can be lifted, the first limiting seat can be separated from the first clamping jaw, and the fixing ring can be placed.
[0014] 3、The utility model discloses through the contraction of second electric push rod, can pull down the first connecting seat along the second connecting seat sliding, can drive the connecting rod and promote the first jaw to slide to the direction of away from the first connecting seat, can from the inside of fixed ring centring clamping, when sliding, the first limit seat that will slide along the second jaw with its connection does not influence the first jaw, the connection between the first limit seat and the second jaw, this kind of way of increasing the clamping structure outside every group first jaw, it can provide more uniform circumferential clamping force, has better adaptability to the shape and size variation of cylindrical piece, and shows more excellent in the resistance to vibration etc., and the second sliding block is T type structural member, passes through the second sliding slot and slides along its inner chamber and can play the limiting effect, and increases the stability of the first jaw sliding, the one end of second support piece away from first support piece can be used to install the drilling device, realizes the drilling to the side of fixed ring, completes the side hole processing. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the exploded view of the whole structure of the utility model;
[0016] Figure 2 It is the enlarged view of A of the structure of the utility model;
[0017] Figure 3 It is the enlarged view of B of the structure of the utility model;
[0018] Figure 4 It is the side rear schematic drawing of the whole structure of the utility model;
[0019] Figure 5 It is the side front schematic drawing of the whole structure of the utility model.
[0020] In the drawing: 1, first support piece, 2, first jaw, 3, first limit seat, 4, second jaw, 5, motor, 6, first sliding block, 7, turntable, 8, first sliding slot, 9, second limit seat, 10, first electric push rod, 11, connecting rod, 12, first connecting seat, 13, second connecting seat, 14, second electric push rod, 15, second sliding block, 16, second sliding slot, 17, second support piece. DETAILED DESCRIPTION
[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0022] Embodiment one
[0023] Please refer to Figures 1-5 The utility model provides a fixed ring side hole machining center clamp, including first support piece 1, first support piece 1 is presented the circumference equidistance limit sliding connection three groups of first clamping jaw 2, three groups of first clamping jaw 2 can realize centring tension through first adjusting assembly, and the top of each group of first clamping jaw 2 plug-in type connection is connected with a group of first limit seat 3, and each group of first limit seat 3 is connected with a group of slidable second clamping jaw 4, and second clamping jaw 4 can be connected with the output end of motor 5 through second adjusting assembly, and motor 5 is connected with lifting assembly.
[0024] In the embodiment, when using, motor 5 is driven to rise by lifting assembly, second clamping jaw 4 and first limit seat 3 are driven to rise by second adjusting assembly, first limit seat 3 is separated from first clamping jaw 2, then fixed ring is set on the outside of first clamping jaw 2, and first limit seat 3 is lowered again to be connected with first clamping jaw 2, first clamping jaw 2 is driven to move by first adjusting assembly, and fixed ring can be clamped from inside, motor 5 is started, and second clamping jaw 4 is driven to move by second adjusting assembly, and fixed ring can be clamped from outside, compared with prior art, after increasing external clamping structure, the inside and outside clamping mode is formed, the inside and outside clamping mode can increase the number of constraint points of fixed ring, from the mechanical point of view, more constraint points mean that the displacement and rotation of fixed ring in each direction can be better resisted, so that the deviation of fixed ring is effectively prevented, for example, when being subjected to larger cutting force, vibration or impact, the inside and outside clamping force can maintain the stability of fixed ring like double insurance, and then the accuracy when side hole is processed can be improved.
[0025] Please refer to Figures 1-5 As shown in the figure, second adjusting assembly includes first sliding block 6, turntable 7 and first sliding slot 8, one end of each group of second clamping jaw 4 is installed with a group of first sliding block 6, first sliding block 6 can slide along the first sliding slot 8 of turntable 7, turntable 7 is connected with the output end of motor 5, motor 5 is connected with lifting assembly, lifting assembly includes second limit seat 9 and first electric push rod 10, motor 5 is installed at the bottom end of second limit seat 9, and the both ends of second limit seat 9 are connected with the output end of a group of first electric push rod 10, and first electric push rod 10 is connected with first support piece 1.
[0026] In the embodiment, the first slider 6 is a cylindrical T-shaped piece, the first sliding groove 8 is an arc-shaped groove, the first slider 6 is connected with the second clamping jaw 4 through the first sliding groove 8, so that the second clamping jaw 4 cannot be separated from the rotating disc 7, and the second clamping jaw 4 can be lifted when the motor 5 is lifted, the rotating disc 7 can be rotated by starting the motor 5, and then the first slider 6 slides along the first sliding groove 8, because the first sliding groove 8 is an arc-shaped groove, the second clamping jaw 4 can be moved along the axis direction of the motor 5, the fixed ring can be clamped from the outside, the second limiting seat 9 can be lifted by the extension of the first electric push rod 10, the motor 5 and the rotating disc 7 can be lifted, and then the second clamping jaw 4 and the first limiting seat 3 are lifted, so that the first limiting seat 3 is separated from the first clamping jaw 2, and the fixed ring can be placed, and vice versa, the connection between the first limiting seat 3 and the first clamping jaw 2 can be completed by lowering.
[0027] Please refer to Figures 1-5 The first adjusting assembly includes a connecting rod 11, a first connecting seat 12, a second connecting seat 13 and a second electric push rod 14, two groups of connecting rods 11 are hinged to the inner side of each group of first clamping jaws 2, the other ends of the two groups of connecting rods 11 are hinged to the first connecting seat 12, the first connecting seat 12 is slidingly connected with the second connecting seat 13, and the bottom end is connected with the output end of the second electric push rod 14, the second connecting seat 13 is installed on the upper surface of the first support 1, and the second electric push rod 14 is installed on the lower surface of the first support 1, and one group of second sliders 15 is installed at the bottom end of each group of first clamping jaws 2, and the first support 1 is provided with a second sliding groove 16 corresponding to the second slider 15, and the first support 1 is installed on one end of the upper surface of the second support 17.
[0028] In the embodiment, the first connecting seat 12 can be pulled down along the second connecting seat 13 by the contraction of the second electric push rod 14, the first clamping jaw 2 can be pushed to slide away from the first connecting seat 12 by the connecting rod 11, the fixed ring can be centered and clamped from the inside, when sliding, the first limiting seat 3 connected therewith can slide along the second clamping jaw 4, without affecting the connection between the first clamping jaw 2, the first limiting seat 3 and the second clamping jaw 4, this way of increasing the clamping structure outside each group of first clamping jaws 2 can provide more uniform circumferential clamping force, has better adaptability to the shape and size changes of the cylindrical piece, and performs better in terms of anti-vibration, the second slider 15 is a T-shaped structural piece, and the second slider 15 slides through the second sliding groove 16 and in the inner cavity of the second sliding groove 16, which can play a limiting role and increase the stability of the sliding of the first clamping jaw 2, and the end of the second support 17 away from the first support 1 can be used to install a drilling device to realize drilling of the side of the fixed ring and complete side hole machining.
[0029] Working principle: first, the first electric push rod 10 is used to drive the second limit seat 9 to rise, that is, the motor 5 and the rotating disc 7 are driven to rise, and then the second clamping jaw 4 and the first limit seat 3 are driven to rise, so that the first limit seat 3 is separated from the first clamping jaw 2, and the fixed ring can be placed, and vice versa, the first limit seat 3 and the first clamping jaw 2 are connected by lowering, and through the contraction of the second electric push rod 14, the first connecting seat 12 is pulled to slide along the second connecting seat 13 and is lowered, the connecting rod 11 is driven to push the first clamping jaw 2 to slide away from the first connecting seat 12, the first clamping jaw 2 is centered and clamped from the inside of the fixed ring, when sliding, the first limit seat 3 connected therewith slides along the second clamping jaw 4, and the connection between the first limit seat 3 and the second clamping jaw 4 is not affected, then the rotating disc 7 is driven to rotate by starting the motor 5, and then the first sliding block 6 slides along the first sliding groove 8, since the first sliding groove 8 is an arc-shaped groove, the second clamping jaw 4 is pulled to move along the first limit seat 3 to the center of the motor 5, and the fixed ring is clamped from the outside, so that the inner and outer clamping is realized.
[0030] The contents not described in detail in the description belong to the prior art known to those skilled in the art.
[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A fixture for fixing the side hole of a ring machining center, comprising a first support (1), characterized in that: The first support (1) is circumferentially equidistantly connected with three groups of first clamping jaws (2), the three groups of first clamping jaws (2) can be centered and tensioned through a first adjusting assembly, and the top end of each group of first clamping jaws (2) is plug-in connected with a group of first limiting seats (3), each group of first limiting seats (3) is connected with a group of slidable second clamping jaws (4), the second clamping jaws (4) can be connected with the output end of a motor (5) through a second adjusting assembly, and the motor (5) is connected with a lifting assembly.
2. The fixture for fixed ring side hole machining center according to claim 1, characterized in that: The second adjusting assembly comprises first sliding blocks (6), a rotating disc (7) and first sliding grooves (8), one end of each group of second clamping jaws (4) is provided with a group of first sliding blocks (6), the first sliding blocks (6) can slide along the first sliding grooves (8) of the rotating disc (7), the rotating disc (7) is connected with the output end of the motor (5), and the motor (5) is connected with the lifting assembly.
3. The fixture for fixed ring side hole machining center according to claim 2, characterized in that: The lifting assembly comprises second limiting seats (9) and first electric push rods (10), the motor (5) is installed at the bottom end of the second limiting seat (9), the two ends of the second limiting seat (9) are respectively connected with the output ends of a group of first electric push rods (10), and the first electric push rods (10) are connected with the first support (1).
4. The fixture for fixed ring side hole machining center according to claim 1, characterized in that: The first adjusting assembly comprises connecting rods (11), first connecting seats (12), second connecting seats (13) and second electric push rods (14), the inner side of each group of first clamping jaws (2) is hinged with two groups of connecting rods (11), the other ends of the two groups of connecting rods (11) are hinged with the first connecting seat (12), the first connecting seat (12) is slidably connected with the second connecting seat (13), and the bottom end thereof is connected with the output end of the second electric push rod (14), the second connecting seat (13) is installed on the upper surface of the first support (1), and the second electric push rod (14) is installed on the lower surface of the first support (1).
5. The fixture for fixed ring side hole machining center according to claim 4, characterized in that: The bottom end of each group of first clamping jaws (2) is provided with a group of second sliding blocks (15), and the first support (1) is provided with second sliding grooves (16) corresponding to the second sliding blocks (15).
6. The fixture for fixed ring side hole machining center according to claim 4, characterized in that: The first support (1) is installed on one end of the upper surface of a second support (17).