CN218745954U

CN218745954U - Thermal sleeve device

Info

Publication number: CN218745954U
Application number: CN202223396662.4U
Authority: CN
Inventors: 张强; 赵小东
Original assignee: Neijiang Jinhong Crankshaft Co ltd
Current assignee: Neijiang Jinhong Crankshaft Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-03-28
Anticipated expiration: 2032-12-14

Abstract

The utility model provides a shrink fit device, relates to the field of crankshaft shrink fit, and solves the problems that the diameter difference of two kinds of shrink fit components of a gear and a flange is too small and the centering problem are difficult to be applied to the existing shrink fit tool; the clamping surface of the supporting disc is provided with at least two clamping pins; the clamping pin is provided with a concave part; the swinging pressing block is mainly formed by connecting a vertical block with a transverse block and is integrally in an inverted T shape; the vertical block is inserted into the concave part of the clamping pin and is connected with the side wall of the concave part of the clamping pin through a cylindrical pin; the clamping pin is provided with a spring; the spring is abutted against one surface, close to the clamping pin, of the transverse block. The utility model discloses a set up the swing briquetting and make its hot jacket part that can be applicable to different diameters and the poor undersize's of two hot jacket diameter the condition to when the hot jacket, the part is because the centering problem that the necessary size design leads to of heating inflation also can be solved through the cooperation of swing briquetting and spring.

Description

Thermal sleeve device

Technical Field

The utility model relates to a bent axle heat jacket field particularly, relates to a heat jacket device.

Background

The crankshaft is usually connected with a gear and a flange in a heat sleeve mode, as shown in fig. 1, a conventional heat sleeve tool at present adopts a stepped clamping jaw structure, the gear and the flange with different diameters are clamped through two steps with different heights, the heat sleeve tool can only be suitable for the heat sleeve tool with the fixed diameter, when the gear and the flange have a very small diameter difference, the step heights are close, when the tool is required to push the gear to a crankshaft journal, a gear axis positioning surface is too small, reliable front jacking force cannot be provided for the gear, and press fitting failure is possible.

Simultaneously, because the part can expand about 0.8 millimeter after the heating, the diameter of gear or flange can be less relatively and make it still can have certain safety clearance after the heating expansion when the frock design, block in the frock after avoiding the part heating, when leading to hot jacket installation to promote gear or flange and move forward, not hard up during gear or flange, probably lead to hot jacket failure, and when becoming flexible, hot jacket spare is partial to the direction of gravity, still can lead to the centering problem promptly the frock center inconsistent with machining center, the striking is serious, damage equipment. For example, the patent with publication number CN202579528U discloses a gear shrink fit positioning tool, and an engine assembly and an automobile using the same, in which a gear abuts against a gear respectively arranged on an upper cover and abuts against an upper end face and a gear arranged on a lower cover and abuts against a lower end face, thereby reducing a positioning error caused by positioning the gear in a manner of observing by naked eyes by a worker, and improving the positioning accuracy of the gear shrink fit on a crankshaft. However, since the positions of the upper and lower end surfaces are fixed by bolts, the parts expand during heating, and the upper and lower end surfaces do not automatically adjust the gap, so that the parts can only be designed with a certain safety gap at the beginning, which may lead to the above-mentioned centering problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot jacket device has solved current hot jacket frock and has been difficult to be applicable to the poor undersize problem of two kinds of hot external member diameters of gear and flange and centering problem.

The embodiment of the utility model discloses a realize through following technical scheme:

a thermal sleeve device comprises a supporting disc and a swinging pressing block; a round hole is formed in the middle of the supporting plate; the clamping surface of the supporting disc is provided with at least two clamping pins; the clamping pin is provided with a concave part; the swinging pressing block is mainly formed by connecting a vertical block with a transverse block and is integrally T-shaped; the vertical block is inserted into the concave part of the clamping pin and is connected with the side wall of the concave part of the clamping pin through a cylindrical pin; the clamping pin is provided with a spring; the spring is abutted against one surface, close to the clamping pin, of the transverse block.

Preferably, the vertical block abuts against the bottom wall of the recess by a screw.

Preferably, the clamping pin is provided with a screw hole; the spring is arranged in the screw hole; the screw hole is provided with a set screw.

Preferably, the number of the clamping feet is 4.

Preferably, the clamping pins comprise an upper clamping pin, a lower clamping pin, a left inclined clamping pin and a right inclined clamping pin; the upper clamping pin and the lower clamping pin are oppositely arranged; the left inclined clamping pin and the right inclined clamping pin are symmetrically arranged on two sides of the lower clamping pin; the axis of the left inclined clamping pin and the axis of the lower clamping pin form an acute angle.

Preferably, the acute angle is 45 degrees to 60 degrees.

Preferably, the clamping surface of the cross block is an arc surface.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model discloses a set up the swing briquetting and make its heat jacket part that can be applicable to different diameters and the poor undersize's of two heat jacket diameters the condition to when the heat jacket, the part is because the centering problem that the necessary size design of heating inflation leads to, also can solve through the cooperation of swing briquetting and spring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a prior art thermal jacket apparatus;

FIG. 2 is a schematic view of a thermal jacket apparatus provided in example 1;

FIG. 3 is a schematic view of the hot jacket apparatus provided in example 1 when clamping a flange;

FIG. 4 is a sectional view of the hot jacket device of example 1 holding a flange

An icon: 01-gear, 02-flange, 03-gear axis positioning surface, 04-jaw structure, 1-supporting disk, 2-swinging pressing block, 21-vertical block, 22-horizontal block, 3-clamping pin, 31-upper clamping pin, 32-lower clamping pin, 33-left inclined clamping pin, 34-right inclined clamping pin, 4-cylindrical pin, 5-screw, 6-spring and 7-set screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1-4, a thermal sleeve device comprises a support disc 1 and a swinging pressing block 2; a round hole is formed in the middle of the supporting disc 1; the clamping surface of the supporting disc 1 is provided with at least two clamping pins 3; the clamping pin 3 is provided with a concave part; the swinging pressing block 2 is mainly formed by connecting a vertical block 21 with a transverse block 22 and is integrally T-shaped; the vertical block 21 is inserted into the concave part of the clamping pin 3 and is connected with the side wall of the concave part of the clamping pin 3 through a cylindrical pin 4; the clamping pin 3 is provided with a spring 6; the spring 6 is abutted against one surface of the cross block 22 close to the clamping foot 3.

In the specific implementation process, the T-shape is as shown in fig. 2, and is opposite to the shape seen from the surface where the clamping foot of the support disc is located.

During working, firstly, opening a protective door of a machine tool, and placing a crankshaft on a tool of the machine tool; secondly, aligning the excircle of the gear 01 of the hot-sleeve part with the swinging pressing block 2, and then pushing the excircle to the supporting disk 1 to enable the gear 01 to slide along the clamping surface of the swinging pressing block 2 until the pushing end surface of the supporting disk 1, so that the part is clamped and positioned; step three, closing a machine tool protective door, starting automatic machining of a machine tool, and arranging the machine tool: the medium-frequency quenching coil advances, heats the inner hole of the gear 01, the coil withdraws, the headstock of the machine tool drives the supporting disk 1 to push the crankshaft, the gear 01 is forced to be sleeved into the crankshaft, the headstock moves backwards, the gear 01 withdraws from the swinging pressing block 2, and the hot sleeving of the gear 01 is completed; a flange 02 hot sleeving step, which is the same as the second and third steps of machining the gear 01 hot sleeving; repeating the steps to finish the continuous operation cycle. This step cooperation of implementing the utility model discloses, when having solved two hot external members, gear axis locating surface 03 undersize can't provide the problem of reliable preceding jacking force for gear 01.

Because swing briquetting 2 can swing to a certain extent, the height of the 2 joint face of adjustment swing briquetting is in order to use the hot suit of different diameters, spring 6 is the compression simultaneously and makes swing briquetting 2 add the holding power for one of hot suit, even the hot suit can expand because of the heating process, swing briquetting 2 also can realize self-interacting through spring 6 in order to ensure that hot suit can not block in the frock, need not to consider the problem of safety clearance during the frock design of hot suit, has just also solved the centering problem.

In the present embodiment, the vertical block 21 abuts against the bottom wall of the recess by a screw 5.

In the specific implementation process, the amplitude of the swinging pressing block 2 during swinging is limited by a screw 5.

In this embodiment, the fastening pin 3 is provided with a screw hole; the spring 6 is arranged in the screw hole; said screw hole is provided with a set screw 7.

In a specific implementation, the set screw 7 fixes the spring 6.

In this embodiment, there are 4 of the clamping pins 3.

In this embodiment, the locking pin 3 includes an upper locking pin 313, a lower locking pin 323, a left inclined locking pin 333, and a right inclined locking pin 343; the upper clamping pin 313 and the lower clamping pin 323 are oppositely arranged; the left inclined clamping pin 333 and the right inclined clamping pin 343 are symmetrically arranged on two sides of the lower clamping pin 323; an included angle formed by the axis of the left inclined clamping pin 333 and the axis of the lower clamping pin 323 is an acute angle.

In the specific implementation process, the lower part of the heat jacket part is supported by the three clamping feet 3, so that the supporting force is increased, the heat jacket part is prevented from falling down due to gravity, the heat jacket part is not aligned with the crankshaft, and the three clamping feet 3 can ensure that the central position of the heat jacket part is fixed.

In this embodiment, the acute angle is 45 to 60 degrees.

In the specific implementation process, the size setting of angle needs to ensure that under the centre gripping of oblique card leg 343 in a left side and oblique card leg 343 in a right side, the part can not rock about enough to the holding power of part when.

In this embodiment, the clamping surface of the transverse block 22 is an arc surface.

In the specific implementation process, the surface of the crankshaft journal is a cambered surface, so that the contact surface of the transverse block 22 and the crankshaft journal is also a cambered surface.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The heat jacket device is characterized by comprising a supporting disc and a swinging pressing block; a round hole is formed in the middle of the supporting plate; the clamping surface of the supporting disc is provided with at least two clamping pins; the clamping pin is provided with a concave part; the swinging pressing block is mainly formed by connecting a vertical block with a transverse block and is integrally T-shaped; the vertical block is inserted into the concave part of the clamping pin and is connected with the side wall of the concave part of the clamping pin through a cylindrical pin; the clamping pin is provided with a spring; the spring is abutted against one surface, close to the clamping pin, of the transverse block.

2. The thermal jacket apparatus according to claim 1, wherein said vertical block abuts against a bottom wall of said recess by means of a screw.

3. The thermal sleeve device according to claim 1, wherein said clamping legs are provided with screw holes; the spring is arranged in the screw hole; the screw hole is provided with a set screw.

4. The thermal sleeve device as claimed in claim 1, wherein said clamping legs are 4.

5. The thermal set apparatus of any one of claims 1-4, wherein the catches comprise an upper catch, a lower catch, a left angled catch, and a right angled catch; the upper clamping pin and the lower clamping pin are oppositely arranged; the left inclined clamping pin and the right inclined clamping pin are symmetrically arranged on two sides of the lower clamping pin; the axis of the left inclined clamping pin and the axis of the lower clamping pin form an acute angle.

6. The thermal jacket apparatus according to claim 5, wherein said acute angle is 45-60 degrees.

7. The heat jacket apparatus according to claim 5, wherein the engagement surface of the cross piece is a curved surface.