Auxiliary tool for quickly positioning and mounting movable clamping jaw

Abstract

The utility model discloses an auxiliary tool for quickly positioning and mounting a movable clamping jaw, which comprises a fixed shaft, and a coaxial mounting part, a fixed part, a sliding fit part and a thread part are sequentially arranged on the fixed shaft along the axial direction; the coaxial mounting part is coaxially positioned and mounted on a center hole of the chuck body, a circumference opening assembly is mounted on the fixing part and the sliding matching part in a matched mode, the circumference opening assembly comprises a fixing sleeve, a sliding sleeve and a plurality of supporting ends arranged in a circumferential array mode, the fixing sleeve is fixedly mounted on the fixing part, and the sliding sleeve is fixedly mounted on the sliding matching part. The sliding sleeve is installed on the sliding matching part in a sliding mode, the supporting end is connected with the sliding sleeve through a first connecting part, and the supporting end is connected with the fixing sleeve through a second connecting part; the adjusting cylinder is installed on the threaded part in a threaded mode, the threads matched with the threaded part are arranged at one end of the inner wall of the adjusting cylinder, rapid replacement of the clamping jaw can be achieved, the equipment shutdown time caused by replacement of the clamping jaw is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This patent relates to the technical field of machine tool processing, and particularly to an auxiliary tool for rapid positioning and installation of movable jaws. Background Art

[0002] Currently, when the existing lathe processes workpieces, first, the movable jaws of the machine tool are fixedly installed in the chute of the machine tool chuck body through bolts and fixed by multiple bolts, and then the machine tool jaws clamp the workpieces for processing. Since the sizes of the workpieces processed by the machine tool are different and the clamping sizes are also different, it is necessary to continuously adjust the movable jaws during use to adapt to the clamping of different workpieces. At present, the adjustment of the movable jaws mainly relies on manual adjustment by workers. Manual adjustment takes a long time, the replacement process of the hydraulic chuck jaws is slow, which affects the production progress, and there are problems that the installation and positioning of multiple movable jaws are inaccurate, affecting the processing accuracy. The whole operation process is complex, greatly affecting the production efficiency. In addition, the labor intensity of manually installing the movable jaws by operators is high, which is prone to operation fatigue and work injury risks. Summary of the Utility Model

[0003] The purpose of this utility model patent is to solve the above problems. In view of the deficiencies of the prior art, an auxiliary tool for rapid positioning and installation of movable jaws is proposed, which can quickly install jaws within different diameter ranges, can realize the rapid replacement of jaws, shortens the equipment downtime caused by jaw replacement, improves the production efficiency; thus also reduces the work burden of operators and reduces the fatigue and work injury risks caused by long-term high-intensity operations.

[0004] The technical solution adopted to achieve the above purpose is:

[0005] An auxiliary tool for rapid positioning and installation of movable jaws, which is used in cooperation with a three-jaw chuck or a four-jaw chuck, includes a fixed shaft, and a coaxial mounting portion, a fixed portion, a sliding fit portion and a threaded portion are sequentially arranged along the axial direction on the fixed shaft;

[0006] The coaxial mounting portion is coaxially positioned and installed on the central hole of the chuck body, a circumferential expansion assembly is cooperatively installed on the fixed portion and the sliding fit portion, the circumferential expansion assembly includes a fixed sleeve, a sliding sleeve and a plurality of support ends arranged in a circumferential array, the fixed sleeve is fixedly installed on the fixed portion, the sliding sleeve is slidably installed on the sliding fit portion, the support ends are cooperatively installed with the movable jaws, the support ends are connected to the sliding sleeve through a first connecting portion, and the support ends are connected to the fixed sleeve through a second connecting portion; after installation, the support ends can complete the expansion action along the sliding fit portion following the sliding sleeve;

[0007] The adjusting cylinder is threadedly installed on the threaded portion. One end of the inner wall of the adjusting cylinder is provided with mating threads, and the other end of the inner wall of the adjusting cylinder is slidably sleeved on the sliding mating portion and is in contact installation with the sliding sleeve; a scale is provided on the sliding mating portion for displaying the expanded diameter of the supporting end.

[0008] Furthermore, a return spring is installed between the fixed sleeve and the sliding sleeve.

[0009] Furthermore, an arc-shaped mating surface is provided at one end of the supporting end that cooperates with the movable claw. An installation seat is provided at the end of the supporting end facing away from the cooperation with the movable claw. A second double-ear seat for installing the second connecting portion is provided on the fixed sleeve, and a first double-ear seat for installing the first connecting portion is provided on the sliding sleeve.

[0010] Furthermore, the first connecting portion is a first connecting rod. One end of the first connecting rod is hingedly installed in the first double-ear seat, and the other end of the first connecting rod is hingedly installed in the installation seat.

[0011] Furthermore, the second connecting portion includes a second connecting rod, a third connecting rod, and a fourth connecting rod; one end of the second connecting rod is hingedly installed in the second double-ear seat, and the other end of the second connecting rod is hingedly installed in the installation seat;

[0012] One end of the third connecting rod and one end of the fourth connecting rod are respectively symmetrically hingedly installed on both sides outside the installation seat, and the hinged positions are located between the hinged installation positions of the first connecting rod and the second connecting rod; the other ends of the third connecting rod and the fourth connecting rod are respectively symmetrically hingedly installed on both sides outside the second double-ear seat. After installation, the second connecting rod forms a parallelogram with the third connecting rod and the fourth connecting rod respectively.

[0013] Furthermore, a screwing anti-slip portion is provided at one end of the outer wall of the adjusting cylinder close to the threaded portion, and a scale observation groove is axially opened on the adjusting cylinder.

[0014] The beneficial effects of the utility model patent are as follows:

[0015] The utility model is an auxiliary tool for quickly positioning and installing movable claws. By setting the coordinated movement of the adjusting cylinder and the circumferential expansion assembly, claws with different diameter ranges can be quickly installed to achieve clamping within different diameter ranges, and the required clamping range in machining can be achieved by changing the size of the circumferential expansion assembly; the design of this patent solves the problems of the cumbersome and time-consuming process of replacing the claws of the hydraulic chuck in the traditional method, can realize the quick replacement of the claws, shortens the equipment downtime caused by replacing the claws, and improves the production efficiency; thus, it also reduces the work burden of the operators and reduces the fatigue and work injury risks caused by long-term high-intensity operations.

[0016] The adjusting cylinder designed in this patent can not only drive the circumferential expansion component to complete the expansion action, but also accurately determine the expansion diameter of the circumferential expansion component by checking the scale in time, quickly and accurately complete the positioning and installation of the jaws, ensure the accuracy and consistency of each installation, and reduce the processing errors caused by improper installation of the jaws.

[0017] The circumferential expansion component designed in this patent, through the cooperation of the multi-link mechanism, realizes the linkage of the sliding sleeve driving four connecting rods to complete the expansion of the supporting end, and can quickly install jaws with different diameter ranges, complete clamping within different diameter ranges, and can complete the required clamping range in machining by changing the size of the circumferential expansion component; the characteristic of quick jaw replacement enables the hydraulic chuck to more flexibly adapt to the machining requirements of workpieces with different sizes and shapes. The jaws can be quickly adjusted according to the changes in production tasks, improving the versatility and multi-functionality of the equipment and reducing the costs caused by replacing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is the front view of the present utility model;

[0020] Figure 3 is the top view of the present utility model;

[0021] Figure 4 is along the Figure 3 sectional view taken along A-A of the present utility model;

[0022] Figure 5 is the working schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the patent of the present utility model with reference to the drawings.

[0024] As Figures 1-5 shown, in order to quickly and accurately replace the movable jaw 8 and ensure the accuracy and consistency of each installation, and reduce the processing errors caused by improper installation of the jaw, this patent proposes an auxiliary tool for quickly positioning and installing the movable jaw 8, which is used in cooperation with a three-jaw chuck or a four-jaw chuck, including a fixed shaft 3. Along the axial direction of the fixed shaft 3, a coaxial mounting portion 34, a fixing portion 33, a sliding mating portion 32 and a threaded portion 31 are sequentially arranged; preferably, in this patent, the coaxial mounting portion 34, the fixing portion 33, the sliding mating portion 32 and the threaded portion 31 are arranged in descending order of diameter.

[0025] As Figures 1-5As shown in the figure, in order to realize the positioning and installation of the auxiliary tool for the quick positioning and installation of the movable jaw 8, the coaxial installation part 34 is coaxially positioned and installed on the central hole of the chuck body 9. A circumferential expansion assembly 1 is installed on the fixed part 33 and the sliding fit part 32. By setting the size of the diameter expanded by the circumferential expansion assembly 1, the movable jaw 8 can be installed in cooperation. This patent can realize clamping with different ranges of diameters, and can complete the clamping range required in machining by changing the size of the circumferential expansion assembly 1.

[0026] As Figures 1-5 shown in the figure, in order to realize clamping with different ranges of diameters, in this patent, the circumferential expansion assembly 1 includes a fixed sleeve 17, a sliding sleeve 16 and a plurality of support ends 15 arranged in a circumferential array. The fixed sleeve 17 is fixedly installed on the fixed part 33, the sliding sleeve 16 is slidably installed on the sliding fit part 32, the support ends 15 are installed in cooperation with the movable jaw 8, the support ends 15 are connected to the sliding sleeve 16 through a first connecting part, and the support ends 15 are connected to the fixed sleeve 17 through a second connecting part; after installation, the support ends 15 can complete the expansion action along the sliding fit part 32 with the sliding sleeve 16; a regulating cylinder 2 is threadedly installed on the threaded part 31. One end of the inner wall of the regulating cylinder 2 is provided with a mating thread, and the other end of the inner wall of the regulating cylinder 2 is slidably sleeved on the sliding fit part 32 and is in contact installation with the sliding sleeve 16; a scale is provided on the sliding fit part 32 for displaying the expanded diameter of the support ends 15. When setting the scale, the relationship between the movement length of the regulating cylinder 2 along the fixed shaft 3 and the circumferential expanded diameter of the support ends 15 needs to be calculated and converted to facilitate quick circumferential positioning and installation of the movable jaw 8.

[0027] During operation, according to the diameter of the movable jaw 8 to be clamped, the regulating cylinder 2 is rotated to move along the fixed shaft 3. During the movement of the regulating cylinder 2, the sliding sleeve 16 is pushed towards the fixed sleeve 17, and at the same time, the sliding sleeve 16 drives a plurality of support ends 15 to expand circumferentially. The circumferential expanded diameter of the support ends 15 is determined by the scale provided on the sliding fit part 32. When the circumferential expanded diameter reaches the diameter of the movable jaw 8 to be clamped, the rotation of the regulating cylinder 2 is stopped, and the support ends 15 are respectively in contact with the movable jaw 8 at the corresponding positions, realizing the quick installation in place of the movable jaw 8.

[0028] As Figures 1-5 shown in the figure, in order to realize the quick reset after the circumferential expansion assembly 1 is expanded, a reset spring is installed between the fixed sleeve 17 and the sliding sleeve 16 in this patent. Before the sliding sleeve 16 slides, the reset spring is in a preloaded state, and the preload force is the gravity of the sliding sleeve 16 and the following components. As the regulating cylinder 2 is rotated, during the movement of the regulating cylinder 2, the sliding sleeve 16 is pushed to compress the reset spring, and the reset spring stores energy. After use, the regulating cylinder 2 moves in the reverse direction to return to the zero position of the scale, and the reset spring releases the spring force to act on the sliding sleeve 16 to reset.

[0029] As shown Figures 1-5 In order to realize the circumferential expansion of the support end 15 and the fitting contact with the movable claw 8, in this embodiment, an arc-shaped fitting surface is provided at one end of the support end 15 that cooperates with the movable claw 8 to achieve the fitting contact between the arc-shaped fitting surface and the movable claw 8. At one end of the support end 15 facing away from the cooperation with the movable claw 8, a mounting seat 10 is provided. A second double-ear seat 18 for mounting the second connecting portion is provided on the fixed sleeve 17, and a first double-ear seat 19 for mounting the first connecting portion is provided on the sliding sleeve 16.

[0030] As shown Figures 1-5 In order for the support end 15 to complete the expansion action and realize the positioning and installation of the movable claws 8 within different clamping ranges, in this embodiment, the first connecting portion is a first connecting rod 11. One end of the first connecting rod 11 is hingedly installed in the first double-ear seat 19, and the other end of the first connecting rod 11 is hingedly installed in the mounting seat 10. In this embodiment, the second connecting portion includes a second connecting rod 12, a third connecting rod 13, and a fourth connecting rod 14. One end of the second connecting rod 12 is hingedly installed in the second double-ear seat 18, and the other end of the second connecting rod 12 is hingedly installed in the mounting seat 10. One end of the third connecting rod 13 and one end of the fourth connecting rod 14 are symmetrically hingedly installed on both outer sides of the mounting seat 10, and the hinged positions are located between the hinged installation positions of the first connecting rod 11 and the second connecting rod 12. The other ends of the third connecting rod 13 and the fourth connecting rod 14 are symmetrically hingedly installed on both outer sides of the second double-ear seat 18. After installation, the second connecting rod 12 forms a parallelogram with the third connecting rod 13 and the fourth connecting rod 14 respectively. During operation, the sliding sleeve 16 drives the first connecting rod 11 to move, and the first connecting rod 11 acts to expand the support end 15. At the same time, the support end 15 drives the second connecting rod 12, the third connecting rod 13, and the fourth connecting rod 14 to follow, cooperating with the support end 15 to complete the expansion action and realizing the positioning and installation of the movable claws 8 within different clamping ranges.

[0031] As shown Figures 1-5 In order to facilitate the screwing of the adjusting cylinder 2 and to facilitate timely viewing of the circumferential expansion diameter of the support end 15 driven by the movement of the adjusting cylinder 2, in this patent, a screwing anti-slip portion 21 is provided at one end of the outer wall of the adjusting cylinder 2 close to the threaded portion 31. The adjusting cylinder 2 can be quickly screwed through the screwing anti-slip portion 21 to avoid slipping. A scale observation groove is axially opened on the adjusting cylinder 2. Through the scale observation groove, the circumferential expansion diameter of the support end 15 driven by the movement of the adjusting cylinder 2 can be timely viewed, quickly and accurately determining the installation diameter of the required movable claw 8, and ensuring the accuracy and consistency of each installation, reducing the processing error caused by improper installation of the claw.

[0032] The working process of the present utility model is as follows:

[0033] During operation, first co-axially position the auxiliary tool for quickly positioning and installing the movable jaw 8 with the chuck body 9. The co-axial installation part 34 is co-axially positioned and installed on the central hole of the chuck body 9 to ensure coaxiality. Rotate the anti-slip part 21 of the adjusting cylinder 2. The adjusting cylinder 2 cooperates with the threaded part 31 to perform a rotary motion and axially act on the sliding sleeve 16 along the fixed shaft 3. The sliding sleeve 16 compresses the return spring under the action of the adjusting cylinder 2, and the return spring stores energy. At the same time, the sliding sleeve 16 drives the first link 11, the second link 12, the third link 13 and the fourth link 14 to rotate, completing the circumferential expansion of multiple support ends 15. The scale can be viewed in time through the scale observation slot to determine the circumferential expansion diameter of the support ends 15. When the circumferential expansion diameter of the support ends 15 reaches the installation diameter of the movable jaw 8, stop rotating the adjusting cylinder 2, quickly position and install the movable jaw 8, and ensure that the arc-shaped mating surface of the support ends 15 is in contact with the movable jaw 8.

[0034] After the movable jaw 8 is positioned and installed, the adjusting cylinder 2 moves in the reverse direction to return to the zero position of the scale. At the same time, the return spring releases the spring force to act on the sliding sleeve 16 to move axially away from the fixed part 33 along the fixed shaft 3 until it returns to the reset position. At this time, the sliding sleeve 16 is in contact connection with the adjusting cylinder 2.

[0035] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model patent. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model patent shall fall within the protection scope of the technical solution of the utility model patent.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model patent and are not intended to limit them. Although the technical solutions of the utility model patent have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the utility model patent.

Claims

1. An auxiliary tool for quick positioning and installation of movable jaws, used in conjunction with a three-jaw chuck or a four-jaw chuck, characterized in that: It comprises a fixed shaft, on which a coaxial mounting portion, a fixing portion, a sliding fitting portion and a threaded portion are sequentially arranged along the axial direction; The coaxial mounting portion is coaxially positioned and mounted on the center hole of the chuck body, and a circumferential expansion component is cooperatively mounted on the fixed portion and the sliding matching portion, and the circumferential expansion component includes a fixed sleeve, a sliding sleeve and a plurality of support ends arranged in a circumferential array, the fixed sleeve is fixedly mounted on the fixed portion, the sliding sleeve is slidably mounted on the sliding matching portion, the support end is cooperatively mounted with the movable claw, the support end is connected to the sliding sleeve through a first connecting portion, and the support end is connected to the fixed sleeve through a second connecting portion; after installation, the support end can complete the expansion action along the sliding matching portion with the sliding sleeve; An adjusting cylinder is threadedly installed on the threaded part, a matching thread is provided at one end of the inner wall of the adjusting cylinder, and the other end of the inner wall of the adjusting cylinder is slidably sleeved on the sliding matching part and installed in contact with the sliding sleeve; a scale is provided on the sliding matching part for displaying the support end expansion diameter.

2. An auxiliary tool for quick positioning and installation of movable claws according to claim 1, characterized in that: A return spring is installed between the fixed sleeve and the sliding sleeve.

3. An auxiliary tool for quick positioning and installation of movable claws according to claim 2, characterized in that: The support end is provided with an arc-shaped mating surface at one end that cooperates with the movable claw, and a mounting seat is provided at the end of the support end that cooperates with the movable claw away from the movable claw. The fixed sleeve is provided with a second double-ear seat for mounting the second connecting part, and the sliding sleeve is provided with a first double-ear seat for mounting the first connecting part.

4. The auxiliary tool for quick positioning and installation of movable claws according to claim 3, characterized in that: The first connecting part is a first connecting rod, one end of the first connecting rod is hingedly installed in the first double-ear seat, and the other end of the first connecting rod is hingedly installed in the mounting seat.

5. The auxiliary tool for quick positioning and installation of movable claws according to claim 4, characterized in that: The second connecting part includes a second connecting rod, a third connecting rod and a fourth connecting rod; one end of the second connecting rod is hingedly installed in the second double-ear seat, and the other end of the second connecting rod is hingedly installed in the mounting seat; One end of the third connecting rod and one end of the fourth connecting rod are symmetrically hingedly installed on both sides outside the mounting seat, and the hinged position is located between the hinged installation position of the first connecting rod and the hinged installation position of the second connecting rod; the other end of the third connecting rod and the other end of the fourth connecting rod are symmetrically hingedly installed on both sides outside the second double-ear seat. After installation, the second connecting rod forms a parallelogram with the third connecting rod and the fourth connecting rod respectively.

6. An auxiliary tool for quick positioning and installation of movable claws according to claim 5, characterized in that: An anti-slip part is arranged on the outer wall of the adjusting tube near one end of the threaded part, and a graduated observation groove is arranged on the adjusting tube along the axial direction.

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