CN211036002U

CN211036002U - Centre device of quenching machine tool

Info

Publication number: CN211036002U
Application number: CN201921673327.XU
Authority: CN
Inventors: 李娜; 冀超; 侯永健
Original assignee: Xi'an Sanming Heat Treatment Technology Co ltd
Current assignee: Xi'an Sanming Heat Treatment Technology Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-07-17
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a top device of quenching machine tool relates to the machinery processing technology field, a top device of quenching machine tool, including mount table, apex seat and top, the apex seat is installed on the mount table, the top is installed on the apex seat, it is provided with an apex cover outward, be provided with an elastic component in the apex cover, elastic component one end butt is top, other end butt apex seat, top tip passes the apex cover and stretches out outward to the apex cover. The utility model discloses can improve the contact when the work piece butt joint is top for the contact of work piece bottom surface and top point cover terminal surface, have more stable advantage when the centre gripping work piece.

Description

Centre device of quenching machine tool

Technical Field

The utility model relates to the technical field of machining, more specifically, it relates to a top device of quenching machine tool.

Background

With the continuous development of the mechanical manufacturing industry, the requirements for manufacturing key parts such as shafts, gears and the like which affect the performance of the whole machine are also continuously improved. For example, the surface hardness of some shaft workpieces directly affects the running performance and the service life of the whole machine. In order to ensure that the shaft workpiece has a certain hardness, the shaft workpiece is further processed by adopting a quenching process.

Chinese patent with publication number CN201793637U discloses an axle type workpiece high-frequency quenching machine tool, which is provided with an upper support and a lower support, wherein the upper support and the lower support are both fixedly connected with a sliding table, and two upper tip axles for clamping workpieces are arranged on the upper support side by side; meanwhile, the lower support is also provided with two lower finials for clamping the workpiece side by side and corresponds to the two upper finials in position, and the two lower finials are synchronously driven by a motor through a gear mechanism.

The double-station high-frequency quenching device is used for clamping two workpieces to perform high-frequency quenching simultaneously, but the mode of clamping the workpieces is realized by utilizing the upper and lower centers to align and prop against the workpieces, when the aperture of the workpieces is matched with the centers, the center surfaces are in contact with the aperture surface of the workpieces, and at the moment, the workpieces and the centers are in a stable state. However, the aperture of the alignment center on different workpieces is large or small, so that matching of the alignment center and the workpiece cannot be guaranteed, when the aperture is larger than that of the alignment center, the contact between the alignment center and the workpiece is only point contact of the top end part and the workpiece hole, and when the aperture is smaller than that of the alignment center, the contact between the alignment center and the workpiece is only line contact of the side wall of the alignment center and the workpiece hole, so that when the workpiece is clamped under the two conditions, the workpiece can slightly deviate in the vertical direction, and further the quenching precision is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims to provide a top device of a quenching machine tool, which can realize the function of elastic expansion of the top in a top sleeve by utilizing the cooperation of the top and an elastic component, and improves the contact between the top and the workpiece and the contact between the point and the surface into the contact between the surface and the surface when the workpiece is aligned at present, thereby improving the quenching precision.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the center device of the quenching machine tool comprises a mounting table, a center seat and a center, wherein the center seat is mounted on the mounting table, the center is mounted on the center seat, a center sleeve is arranged outside the center, an elastic part is arranged in the center sleeve, one end of the elastic part is abutted against the center, the other end of the elastic part is abutted against the center seat, and the end part of the center penetrates through the center sleeve and extends out of the center sleeve.

By adopting the technical scheme, the function that the center can elastically stretch out and draw back in the center sleeve is realized by utilizing the matching of the center and the elastic component, the contact between the center and the workpiece and the contact between the point and the surface during the existing alignment of the workpiece is improved into the contact between the surface and the surface, the workpiece can be ensured to be contacted with the end surface of the center sleeve, the center only plays a role in positioning, the coaxial center of the workpiece and the center is ensured, the influence of the aperture size of the center in the alignment of the workpiece on the contact mode of the workpiece and the center is avoided, the deviation of the workpiece in the vertical direction caused by the point contact or the line contact between the workpiece and the center is avoided, and the.

The utility model discloses further set up to: the elastic part is a spring, the diameter of the center is larger than that of the spring, the upper end of the center sleeve is provided with a through hole for the conical part of the center to extend out, and the diameter of the through hole is smaller than that of the center.

By adopting the technical scheme, the spring is in the original length, the conical part of the tip extends out of the through hole, the workpiece and the tip are positioned through the conical part of the tip, then the workpiece and the tip are tightly pressed, the spring is in a contraction state, and the end face of the workpiece is in contact with the end face of the tip sleeve.

The utility model discloses further set up to: a bearing is arranged between the mounting table and the tip seat, a driving device is arranged at the mounting table, and the output end of the driving device is connected with the tip seat.

By adopting the technical scheme, the center seat can rotate and the mounting table is fixed in the quenching process, so that the surface of the workpiece is fully quenched, and the quenching precision is improved.

The utility model discloses further set up to: the center sleeve is detachably connected with the center seat.

By adopting the technical scheme, the tip is convenient to disassemble and replace when the tip is damaged.

The utility model discloses further set up to: the improved tool bit is characterized in that an annular wall for inserting the tip sleeve is arranged on the tip seat, a groove is formed in the outer side wall of the annular wall, a convex block capable of moving along the radial direction of the annular wall is installed in the groove and controlled by a reset assembly to protrude out of the outer wall of the annular wall, and an opening matched with the convex block is formed in the side wall of the tip sleeve.

By adopting the technical scheme, the installation of the center sleeve on the center seat is realized by the matching of the insertion of the annular wall and the center sleeve, and the fixation of the center sleeve on the annular wall in the axial direction and the circumferential direction is realized by the matching of the convex block and the open hole.

The utility model discloses further set up to: one end of the lug, which is far away from the center seat, is provided with a guide inclined plane which inclines downwards.

By adopting the technical scheme, the guide function is realized in the process of inserting the center sleeve on the center seat, and the installation of the center sleeve on the center seat is facilitated.

The utility model discloses further set up to: the reset assembly is a connecting rod and a second spring, a through hole penetrating through the bottom of the groove and the inside of the annular wall is formed in the bottom of the groove, a nut is arranged at one end of the connecting rod, the other end of the connecting rod penetrates through the through hole and is in threaded connection with the lug, the second spring is sleeved on the connecting rod, and the two ends of the second spring are respectively abutted to the bottom of the groove and the lug.

By adopting the technical scheme, the second spring is in the original length, the lug is positioned outside the groove, when the center sleeve moves to the lug position, the second spring is compressed, the lug moves towards the inside of the groove, and the connecting rod moves towards the inner wall of the annular wall; when the opening on the center sleeve moves to the position of the convex block, the second spring restores to be original, the convex block extends out of the groove, the connecting rod is connected with the convex block in a threaded manner to prevent the connecting rod from being separated from the convex block, and meanwhile, the nut plays a role in blocking when the second spring resets.

Compared with the prior art, the utility model has the advantages that:

the contact of the workpiece during butt joint of the center is improved into the contact of the bottom surface of the workpiece and the end surface of the center sleeve, so that the stability of the workpiece during clamping is enhanced, the unstable condition of the workpiece during clamping caused by different sizes of the hole diameters of the alignment centers is avoided, and the precision of quenching work is further improved.

Drawings

Fig. 1 is an overall structural view in the present embodiment;

fig. 2 is an exploded view in the present embodiment;

FIG. 3 is a sectional view of a part of the structure in this embodiment;

FIG. 4 is a top view of the annular wall, tie bar and lugs in this embodiment;

FIG. 5 is an enlarged view of structure A of FIG. 4;

fig. 6 is a structure diagram of the bump in the present embodiment.

Reference numerals: 1. an installation table; 2. a tip seat; 3. a tip sleeve; 4. a tip; 5. a bump; 6. opening a hole; 7. an annular wall; 8. a groove; 9. a connecting rod; 10. a second spring; 11. a nut; 12. a threaded hole; 13. a drive device; 14. a spring; 15. a port; 16. and a bearing.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, a centre device of a quenching machine tool comprises a mounting table 1, a centre seat 2, a centre 4 and a centre sleeve 3, wherein the mounting table 1 is provided with the centre seat 2, the centre seat 2 is connected with the centre 4, the centre sleeve 3 is arranged outside the centre 4, and the end part of the centre 4 penetrates through the centre sleeve 3 and extends out of the centre sleeve 3.

Referring to fig. 2, a driving device 13 is arranged below the mounting table 1, an output end of the driving device 13 is connected with the center seat 2 on the mounting table 1, a bearing 16 (see fig. 3) is arranged between the mounting table 1 and the center seat 2, so that the mounting table 1 is not affected when the driving device 13 drives the center seat 2 to rotate, and the bearing 16 (see fig. 3) between the mounting table 1 and the center seat 2 plays a role in reducing friction resistance.

Referring to fig. 3, an annular wall 7 for inserting the center sleeve 3 is arranged on the center seat 2, an elastic part and a center 4 are arranged in the annular wall 7, the elastic part is a spring 14, one end of the spring 14 is abutted to the center 4, the other end of the spring 14 is abutted to the center seat 2, the diameter of the center 4 is larger than that of the spring 14, a through hole 15 for outputting a conical part of the center 4 is formed in the upper end of the center sleeve 3, and the diameter of the through hole 15 is smaller than that of the center 4.

Referring to fig. 3 and 4, the center sleeve 3 and the center base 2 are connected in a clamping manner, a groove 8 is formed in the outer side wall of the annular wall 7, a convex block 5 capable of moving along the radial direction of the annular wall 7 is installed in the groove 8, the convex block is controlled by a reset assembly to protrude out of the outer wall of the annular wall 7, and an opening 6 matched with the convex block 5 is formed in the side wall of the center sleeve 3 (see fig. 2).

Referring to fig. 5 and 6, one end of the projection 5 is provided with a threaded hole 12 to which the connection rod 9 is connected, and one end of the projection 5, which is away from the toe box 2, is provided with a slope inclined downward for guiding the insertion of the toe box 3 (see fig. 3). The reset component is a connecting rod 9 and a second spring 10, a through hole (not shown in the figure) penetrating through the annular wall 7 is arranged at the bottom of the groove 8, a nut 11 is arranged at one end of the connecting rod 9, and the size of the nut 11 is larger than that of the through hole. The other end of the connecting rod 9 penetrates through the through hole to be in threaded connection with the lug 5, the second spring 10 is sleeved on the connecting rod 9, and two ends of the second spring 10 are respectively abutted to the bottom of the groove 8 and the lug 5.

The working principle is as follows: when the centre 4 is installed, firstly, the spring 14 and the centre 4 are installed on the centre seat 2, then the centre sleeve 3 is inserted outside the annular wall 7 on the centre seat 2, the centre sleeve 3 extrudes the lug 5 through the guide surface inclined downwards in the moving process and enables the connecting rod 9 to shrink, the lug 5 enters the groove 8, when the opening 6 on the centre sleeve 3 moves to the lug 5, the connecting rod 9 resets, the lug 5 moves out of the opening 6, and the fixing of the centre sleeve 3 on the installation platform 1 is realized. When the centre 4 is needed to align and clamp a workpiece, the workpiece is aligned with the conical part of the centre 4, then the workpiece is pressed to enable the spring 14 in the centre sleeve 3 to contract, the centre 4 retracts into the centre sleeve 3 from the through hole 15, and at the moment, the bottom surface of the workpiece is in a contact state with the end surface of the centre sleeve 3, so that the fixed state of the workpiece on the centre 4 is maintained in a stable state.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The center device of the quenching machine tool comprises a mounting table (1), a center seat (2) and a center (4), wherein the center seat (2) is mounted on the mounting table (1), the center (4) is mounted on the center seat (2), and the quenching machine tool is characterized in that a center sleeve (3) is arranged outside the center (4), an elastic part is arranged in the center sleeve (3), one end of the elastic part is abutted against the center (4), the other end of the elastic part is abutted against the center seat (2), and the end part of the center (4) penetrates through the center sleeve (3) and extends out of the center sleeve (3).

2. The center device of a quenching machine according to claim 1, characterized in that the elastic member is a spring (14), the diameter of the center (4) is larger than that of the spring (14), the upper end of the center sleeve (3) is provided with a through hole (15) for the conical part of the center (4) to extend out, and the diameter of the through hole (15) is smaller than that of the center (4).

3. The tip device of a quenching machine according to claim 1, characterized in that a bearing (16) is arranged between the mounting table (1) and the tip seat (2), a driving device (13) is arranged at the mounting table (1), and the output end of the driving device (13) is connected with the tip seat (2).

4. The tip device of a quenching machine according to claim 1, characterized in that the tip sleeve (3) is detachably connected to the tip seat (2).

5. The center device of the quenching machine tool according to claim 4, characterized in that the center seat (2) is provided with an annular wall (7) for inserting the center sleeve (3), the outer side wall of the annular wall (7) is provided with a groove (8), a lug (5) capable of moving along the radial direction of the annular wall (7) is installed in the groove (8), the lug (5) is controlled by a reset component to protrude out of the outer wall of the annular wall (7), and the side wall of the center sleeve (3) is provided with an opening (6) matched with the lug (5).

6. The tip device of a quenching machine according to claim 5, characterized in that the end of the projection (5) remote from the tip seat (2) is provided with a downwardly inclined guide slope.

7. The center device of the quenching machine tool as claimed in claim 6, wherein the reset component is a connecting rod (9) and a second spring (10), the bottom end of the groove (8) is provided with a through hole penetrating the inside of the annular wall (7), one end of the connecting rod (9) is provided with a nut (11), the other end of the connecting rod passes through the through hole to be in threaded connection with the lug (5), the second spring (10) is sleeved on the connecting rod (9), and two ends of the second spring (10) are respectively abutted against the bottom of the groove (8) and the lug (5).