CN114545757B

CN114545757B - Frock is used in dismouting of balance shaft

Info

Publication number: CN114545757B
Application number: CN202210441972.9A
Authority: CN
Inventors: 张建忠; 范伟; 陈静; 齐莉; 薛超君; 肖迪
Original assignee: Tianjin Seagull Watch Group Co Ltd
Current assignee: Tianjin Seagull Watch Group Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-05
Anticipated expiration: 2042-04-26
Also published as: CN114545757A

Abstract

The invention provides a tooling for disassembling and assembling a balance wheel shaft, which comprises: the device comprises a machine base, a reversing assembly, an impact assembly and an operation assembly. The frame includes plummer and positioning sleeve, and positioning sleeve sets up in the plummer top, and positioning sleeve passes through the linking arm and links to each other with the plummer. The reversing assembly comprises an outer sleeve and an inner sleeve, the height of the outer sleeve is adjustable, the outer sleeve is arranged inside the positioning sleeve, the inner sleeve is rotatably arranged inside the outer sleeve, and a plurality of spiral grooves are formed in the inner side wall of the adjusting section of the inner sleeve. The impact assembly comprises a connecting piece and a punch, and the punch is detachably arranged on the bottom surface of the connecting piece. The operation subassembly includes striking hammer and direction plunger, and inside the sleeve including the setting of striking hammer liftable, the setting of direction plunger telescopic is inside the side wall mounting hole of striking hammer. The tooling for disassembling and assembling the balance wheel shaft can enable the balance wheel shaft to uniformly bear impact force in the disassembling and assembling process, so that the operation difficulty of workers is reduced.

Description

Frock is used in balance shaft dismouting

Technical Field

The invention belongs to the field of watch part machining equipment, and particularly relates to a tool for disassembling and assembling a balance wheel shaft.

Background

The balance wheel hairspring system is a core component in a watch movement, when the balance wheel hairspring system works, the compression and relaxation of the hairspring can drive the balance wheel to rotate and vibrate, the period of the rotation and vibration can be used as a timing basis of the movement, and therefore the movement is driven to accurately travel.

In order to reduce the frictional resistance to the rotation of the balance wheel, it is common to provide the balance wheel axle with small diameter tips at both ends. However, as the life cycle of the movement increases, the small tip of the balance staff inevitably wears, and when the movement is subjected to severe vibrations, the tip of the balance staff may also bend or break. After the tip of the balance wheel axle is damaged, the rotating oscillation period of the balance wheel is affected, so that the timing accuracy of the movement is affected, and workers need to disassemble and replace the balance wheel axle.

In the prior art, the balance shaft is detached and replaced originally, and workers need to place the balance on an anvil, press a punch against the end face of the balance shaft, and then apply impact force to the punch by means of a hammer, so that the balance shaft is detached and installed. However, since the balance staff and the balance center hole are usually assembled by caulking, the actual operation is difficult. When the impact force cannot be uniformly distributed on each position of the end face of the balance wheel shaft, the roundness and the concentricity of the balance wheel are affected, and a worker can only manually rotate the balance wheel for many times in the impact process, so that the distribution condition of the impact force is adjusted. However, the multiple rotations of the balance do not guarantee a uniform rotation angle and therefore still do not ensure a uniform distribution of the impact force. Furthermore, when the punch is impacted with the hammer a plurality of times in succession, the impact point of the hammer may be deviated from the axis of the punch, which may cause uneven distribution of the impact force, and further affect the subsequent use of the balance.

Disclosure of Invention

In view of this, the present invention provides a balance axle mounting and dismounting tool to achieve the purpose of reducing the difficulty in mounting and dismounting a balance axle.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a tooling for disassembling and assembling a balance shaft comprises:

the engine base comprises a bearing table and a positioning sleeve, the positioning sleeve is arranged above the bearing table, and the positioning sleeve is connected with the bearing table through a connecting arm; a positioning groove is arranged on the top surface of the bearing table and is aligned with the positioning sleeve;

the reversing assembly comprises an outer sleeve and an inner sleeve, the outer sleeve is arranged in the positioning sleeve in a height-adjustable manner, and the inner sleeve is rotatably arranged in the outer sleeve; two connecting holes are arranged on the bottom surface of the inner sleeve and distributed on two sides of the axis of the inner sleeve in a mirror image manner; the inner sleeve comprises an adjusting section and an accommodating section, the adjusting section is positioned above the accommodating section, and the inner diameter of the adjusting section is smaller than that of the accommodating section; a plurality of spiral grooves with the same rotation direction are arranged on the inner side wall of the adjusting section, the bottom openings of the spiral grooves are positioned on the bottom end surface of the adjusting section, and the top openings are positioned on the top end surface of the adjusting section; the spiral grooves are uniformly arranged on the peripheral side of the axis of the adjusting section, and an included angle formed by connecting lines of two adjacent bottom openings and the axis of the adjusting section is equal to the rotation angle of the spiral grooves;

the impact assembly comprises a connecting piece and a punch, the connecting piece comprises an upper baffle, a lower baffle and two connecting rods, the upper baffle is arranged in the accommodating section, the lower baffle is arranged below the inner sleeve, the two connecting rods are respectively positioned in the two connecting holes, one end of each connecting rod is connected with the upper baffle, and the other end of each connecting rod is connected with the lower baffle; the punch is detachably arranged on the bottom surface of the lower baffle, and the bottom surface of the punch is provided with a containing hole which is aligned with the positioning groove;

the operating assembly comprises an impact hammer and a guide plunger, the impact hammer is arranged in the inner sleeve in a lifting mode, a mounting hole is formed in the side wall of the impact hammer, and the guide plunger is arranged in the mounting hole in a telescopic mode; when the impact hammer rises, the guide plunger extends to the outside of the mounting hole, and after the impact hammer enters the adjusting section, the guide plunger enters the spiral groove so that the inner sleeve rotates along with the rising of the impact hammer; when the impact hammer descends, the guide plunger retracts into the mounting hole, and after the impact hammer enters the accommodating section, the bottom surface of the impact hammer impacts the top surface of the upper baffle.

Further, the impact hammer comprises a handheld part, an impact rod and a hammer head which are sequentially connected from top to bottom, the handheld part is located above the outer sleeve, the hammer head is located inside the inner sleeve, and a communication hole for accommodating the impact rod is formed in the top surface of the outer sleeve; the outer diameter of the hammer head is equal to the inner diameter of the adjusting section, and the mounting hole is formed in the side wall of the hammer head; still the cover is equipped with first spring on the striking rod, the one end of first spring links to each other with the top surface of outer sleeve, and the other end links to each other with the bottom surface of handheld portion.

Further, a guide strip is arranged on the side wall of the impact rod, and the length direction of the guide strip is parallel to the axial direction of the impact rod; the inner side wall of the communicating hole is provided with a guide groove, and the guide strip is arranged in the guide groove.

Furthermore, an operation hole is formed in the top surface of the impact hammer, the operation hole is communicated with the installation hole, a piston rod is arranged in the operation hole, and the top end of the piston rod is connected with a pressing sheet above the impact hammer; an annular installation slot is formed in the inner side wall of the installation hole, a blocking piece and a second spring are arranged on the guide plunger, the blocking piece is located in the annular installation slot, one end of the second spring is connected with the blocking piece, and the other end of the second spring is connected with the end face, away from the operation hole, of the annular installation slot; when the piston rod rises, the elastic force of the second spring drives the guide plunger to retract into the mounting hole; when the piston rod descends, the bottom end of the piston rod extrudes the end face, close to the operation hole, of the guide plunger, so that the guide plunger extends out of the installation hole.

Furthermore, the bottom end face of the piston rod is a spherical surface, and guide spherical surfaces are arranged at two ends of the guide plunger.

Furthermore, an annular cutting groove is formed in the outer side wall of the inner sleeve, a limiting ring is arranged on the inner side wall of the outer sleeve, and the limiting ring is arranged in the annular cutting groove.

Furthermore, a limiting strip is arranged on the side wall of the outer sleeve, and the length direction of the limiting strip is parallel to the axis direction of the outer sleeve; a limiting groove is formed in the inner side wall of the positioning sleeve, and the limiting strip is arranged in the limiting groove; the outer side wall of the positioning sleeve is further provided with an adjusting protrusion, a threaded hole is formed in the end face of the adjusting protrusion and communicated with the limiting groove, an adjusting screw rod is arranged in the threaded hole, and the bottom end of the adjusting screw rod is abutted to the limiting strip.

Furthermore, the machine base also comprises a bearing sheet, a connecting shaft is arranged on the top surface of the bearing table, and the bearing sheet is rotatably sleeved on the connecting shaft; the bearing sheet is provided with a plurality of positioning holes with different inner diameters, the positioning holes are annularly arranged on the periphery of the connecting shaft, and the distance from any one positioning hole to the connecting shaft is equal to the distance from the positioning groove to the connecting shaft.

Furthermore, be equipped with first locking hole on the plummer, be equipped with the locking round pin in first locking hole inside, and be equipped with a plurality of second locking holes that are used for holding the locking round pin on the plummer.

Furthermore, a discharging notch is formed in the side wall of the bearing table and communicated with the positioning groove.

Compared with the prior art, the tool for disassembling and assembling the balance wheel axle has the following advantages:

(1) the tooling for disassembling and assembling the balance wheel shaft can apply impact force to the impact assembly through the descending action of the impact hammer and can drive the inner sleeve to rotate through the ascending action of the impact hammer. Because the two connecting rods in the connecting piece are arranged on two sides of the axis of the inner sleeve in a mirror image mode, when the end of the balance wheel axle is impacted, the impact force generated by the device is uniformly distributed on two sides of the axis of the balance wheel axle. When the balance shaft is impacted continuously for a plurality of times, the position of the connecting rod can be changed by the rotation of the inner sleeve, and the impact force generated by the device can uniformly act on all directions of the end surface of the balance shaft, so that the roundness and the concentricity of the balance are prevented from being influenced. Compared with the prior art, the device can obviously reduce the working difficulty of workers in dismounting the balance wheel shaft, can also improve the dismounting efficiency of the balance wheel shaft, and is convenient for dismounting the balance wheel shaft.

(2) The invention provides a tooling for disassembling and assembling a balance wheel shaft, wherein a piston rod and a telescopic guide plunger are arranged inside an impact hammer, and a spiral groove is formed in the inner side wall of an adjusting section. When the impact hammer descends, the guide plunger will retract inside the mounting hole, thereby avoiding the inner sleeve from rotating during impact. When the impact hammer rises, a worker can drive the guide plunger to extend out of the mounting hole through the piston rod, and therefore the inner sleeve rotates through the matching of the spiral groove and the guide plunger.

(3) The invention provides a tool for dismounting a balance wheel shaft, wherein a rotatable bearing sheet is arranged on a bearing table, and a plurality of positioning holes with different inner diameters are formed in the bearing sheet. When the positioning hole is used, a worker can select the positioning hole which is aligned with the positioning groove according to the dismounting limit requirement and the diameter specification of the balance wheel shaft, so that different working requirements are met.

(4) According to the tooling for disassembling and assembling the balance wheel axle, the adjusting screw rod is arranged on the positioning sleeve, and when the tooling is used, a worker can adjust the position of the outer sleeve according to the height of the balance wheel axle to be processed, so that different working requirements are met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

fig. 1 is a schematic structural view of a balance staff dismounting tool according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a balance shaft mounting and dismounting tool according to an embodiment of the present invention;

fig. 3 is an exploded view of a fixture for dismounting a balance axle according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base and related components according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a reversing assembly according to an inventive embodiment of the present invention;

fig. 6 is an exploded view of an operating assembly according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of an impact hammer according to an embodiment of the present invention;

FIG. 8 is a cut-away inside view of the reversing assembly, the impact assembly and the operating assembly (the impact hammer is in the extreme ascending position) according to the inventive embodiment of the present invention;

FIG. 9 is a cutaway inside view of the reversing assembly, the impact assembly and the operating assembly (with the impact hammer in a lowered limit position) in accordance with the inventive embodiment of the present invention;

fig. 10 is a schematic view of the structure of the balance wheel and the balance wheel axle according to the inventive embodiment.

Description of reference numerals:

11-a positioning sleeve; 111-a limiting groove; 112-a threaded hole; 12-a linker arm; 13-a carrier table; 131-a positioning groove; 132-a connecting shaft; 133-a second locking hole; 134-discharge cut; 2-an outer sleeve; 21-a communicating hole; 211-a guide slot; 22-a stop collar; 23-a spacing bar; 3-an inner sleeve; 31-a conditioning section; 311-helical groove; 32-a containment section; 33-annular grooving; 41-upper baffle plate; 42-connecting rod; 43-lower baffle; 44-a punch; 441-a receiving hole; 51-a hand-held portion; 511-operation hole; 512-a piston rod; 5121 pressing piece; 52-striker bar; 521-a guide bar; 53-hammer head; 531-mounting holes; 5311-annular mounting slots; 54-a first spring; 6-a guide plunger; 61-baffle plate; 62-a second spring; 7-adjusting the screw; 8-a carrier sheet; 81-positioning holes; 82-a first locking hole; 821-a locking pin; 91-balance wheel; 911-balance center hole; 912-swing beam; 92-balance staff; 921-double disc mounting section; 922-balance wheel mounting section; 923-a swinging wheel seat; 924-spring collet mounting section.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A balance staff dismounting tool for assisting staff in dismounting and mounting a balance staff, fig. 1-3 are schematic views of the balance staff dismounting tool, and as shown in the figure, the balance staff dismounting tool in the embodiment comprises: the device comprises a machine base, a reversing assembly, an impact assembly and an operation assembly. The machine base comprises a bearing platform 13 and a positioning sleeve 11, the positioning sleeve 11 is arranged above the bearing platform 13, and the positioning sleeve 11 is connected with the bearing platform 13 through a connecting arm 12. The reversing assembly is arranged inside the positioning sleeve 11, and the impact assembly and the operation assembly are both arranged in the reversing assembly. In use, a worker may place the balance to be processed on the plummer 13 and impact the balance staff through cooperation of the reversing assembly, the impact assembly, and the operating assembly.

Specifically, as shown in fig. 4, in order to conveniently limit the position of the balance to be processed, a positioning groove 131 is provided on the top surface of the plummer 13 in the present embodiment, and the positioning groove 131 is aligned with the positioning sleeve 11. In use, a worker may place the balance on the plummer 13 and insert the balance staff into the positioning groove 131 so that the striking assembly inside the positioning sleeve 11 strikes the end of the balance staff.

In the actual working process, because the diameter specifications of the balance shafts are different, and the disassembling work and the installing work of the balance shafts need to carry out limit support on different parts on the balance shafts, the embodiment can be provided with the connecting shaft 132 on the top surface of the plummer 13, and the rotatable plummer 8 is arranged on the connecting shaft 132. As shown in fig. 4, a plurality of positioning holes 81 with different inner diameters are disposed on the carrier sheet 8, the positioning holes 81 are annularly disposed on the periphery of the connecting shaft 132, and the distance from any one positioning hole 81 to the connecting shaft 132 is equal to the distance from the positioning slot 131 to the connecting shaft 132. When using, the staff can screen locating hole 81 according to actual demand to make suitable locating hole 81 and constant head tank 131 align mutually through the mode of rotating carrier sheet 8.

Fig. 10 is a schematic structural diagram of a conventional balance and balance staff, and as shown in the drawing, a balance center hole 911 and a balance beam 912 are provided on the balance 91, and a double-roller mounting section 921, a balance mounting section 922, a balance base 923 and a balance spring collet mounting section 924 are provided on the balance staff 92. When the balance axle 92 is removed, the worker can rotate the balance plate 8 to align the positioning hole 81, which has an inner diameter slightly larger than the outer diameter of the balance wheel base 923, with the positioning groove 131, then insert the balance axle 92 into the positioning hole 81, so that the balance wheel 91 is laid on the top surface of the balance plate 8, and then impact the end surface of the balance wheel installation section 922 through the impact assembly, so that the balance axle 91 is separated from the balance wheel center hole 911. When the balance wheel axle 92 is installed, a worker can align the positioning hole 81, which has an inner diameter larger than the outer diameter of the double-roller installation section 921 and smaller than the outer diameter of the balance wheel base 923, with the positioning groove 131 by rotating the bearing plate 8, then insert the balance wheel axle 92 into the positioning hole 81, so that the balance wheel 91 is horizontally placed on the top surface of the bearing plate 8, and then impact the end surface of the balance wheel installation section 922 through the impact assembly, so that the flange expansion of the balance wheel installation section 922 occurs, and the balance wheel 91 and the balance wheel axle 92 are riveted.

In addition, since the balance shafts 92 of different specifications have different diameter sizes, the worker can rotate the support plate 8 according to the diameter specification of the balance shafts, thereby ensuring that the balance shafts 92 can be inserted into the positioning holes 81 smoothly.

Optionally, in order to prevent the plummer 8 from abnormally rotating during the process of assembling and disassembling the balance axle 92, in this embodiment, a first locking hole 82 is formed in the plummer 8, a locking pin 821 is disposed inside the first locking hole 82, and a plurality of second locking holes 133 for receiving the locking pin 821 are formed in the plummer 13. When any one of the positioning holes 81 is aligned with the positioning groove 131, a second locking hole 133 is aligned with the first locking hole 82, and at this time, the worker can insert the locking pin 821 into the second locking hole 133, so that the bearing sheet 8 is circumferentially limited, and the bearing sheet 8 is prevented from rotating abnormally.

As an alternative embodiment of this embodiment, since the balance axle 92 will enter the positioning groove 131 after being separated from the balance 91, in order to facilitate the staff to take out the balance axle 92, a discharging notch 134 may be provided on the side wall of the plummer 13, and the discharging notch 134 is communicated with the positioning groove 131. Correspondingly, the bottom surface of the discharging cut 134 may be a slope gradually decreasing from inside to outside, so as to facilitate the outward sliding of the fallen balance axle 92.

In order to avoid that the roundness and concentricity of the balance 91 will be affected during the actual assembly and disassembly of the balance axle 92, the worker needs to ensure that the impact force is uniformly distributed in all directions on the end face of the balance axle 92. However, in the prior art, a dedicated device is not available, and a worker can only impact the end face of the balance wheel axle 92 by means of a punch, and at the same time, the impact strength and the impact position of the punch need to be accurately controlled, so that the dismounting and mounting work of the balance wheel axle 92 is difficult, and the working efficiency cannot be improved. To solve this problem, the present embodiment provides the impact force required for disassembling and assembling the balance axle 92 through the cooperation of the operating assembly and the impact assembly, and adjusts the action direction of the impact force through the cooperation of the operating assembly and the reversing assembly, thereby reducing the difficulty of disassembling the balance axle 92 and improving the work efficiency.

Specifically, the reversing assembly comprises an outer sleeve 2 and an inner sleeve 3, wherein the outer sleeve 2 is arranged in the positioning sleeve 11 in a height-adjustable mode, and the inner sleeve 3 is rotatably arranged in the outer sleeve 2. The impact assembly comprises a connecting piece and a punch 44, wherein the connecting piece comprises an upper baffle plate 41 and a lower baffle plate 43, the upper baffle plate 41 and the lower baffle plate 43 are connected through two connecting rods 42 which are parallel to each other, the punch 44 is detachably arranged on the bottom surface of the lower baffle plate 43 through threads, a containing hole 441 used for containing the top shaft tip of the balance wheel axle 92 is arranged on the bottom surface of the punch 44, and the containing hole 441 is aligned with the positioning groove 131. The operating assembly comprises an impact hammer, and the impact hammer is arranged inside the inner sleeve 3 in a liftable mode.

For the assembly between convenient impact assembly and the switching-over subassembly, should be equipped with two connecting holes on the bottom surface of sleeve 3 including this embodiment, and two connecting holes are the both sides of sleeve 3 axis including the mirror image distribution. When the installation is performed, the upper baffle 41 should be placed inside the inner sleeve, the lower baffle 43 should be placed below the inner sleeve 3, and the two connecting rods 42 are respectively located inside the two connecting holes.

After the balance 91 to be processed is placed inside the device, the operator can adjust the height of the reversing assembly so that the top of the balance axle 92 is inserted into the receiving hole 441 in the bottom surface of the punch 44 and the bottom surface of the punch 44 abuts against the top end surface of the balance mounting section 922. The striking hammer can then be driven down to strike the top surface of the upper apron 41 through the bottom surface of the striking hammer, so that the balance axle 92 obtains the impact force required for the dismounting work. In order to ensure that the balance wheel mounting section 922 has a good impact effect, the height of the reversing assembly should be adjusted downward by an appropriate amount after the bottom surface of the punch 44 is attached to the top end surface of the balance wheel mounting section 922, so that a gap is formed between the bottom surface of the upper baffle plate 41 and the bottom inner wall of the inner sleeve 3, and the impact assembly has the ability to move downward during an impact.

In addition, because the punch 44 is connected with the lower baffle 43 through threads, a worker can replace the punch 44 according to actual conditions. Illustratively, a worker may replace the punch 44 according to the diameter specification of the balance axle 92 so that the receiving hole 441 mates with the balance axle 42.

Optionally, in order to adjust the height of the reversing assembly conveniently, in this embodiment, the side wall of the outer sleeve 2 is provided with a limiting strip 23, and the length direction of the limiting strip 23 is parallel to the axial direction of the outer sleeve 2. Correspondingly, a limiting groove 111 is formed in the inner side wall of the positioning sleeve 11, and the limiting strip 23 is arranged in the limiting groove 111 during assembly. In addition, an adjusting protrusion is further arranged on the outer side wall of the positioning sleeve 11, a threaded hole 112 communicated with the limiting groove 111 is formed in the end face of the adjusting protrusion, and an adjusting screw 7 is arranged inside the threaded hole 112. When the height of the reversing assembly needs to be adjusted, the worker can loosen the adjusting screw rod 7, so that the reversing assembly can move axially inside the positioning sleeve 11 conveniently, and after the reversing assembly is adjusted to a proper height, the worker can tighten the adjusting screw rod 7, so that the bottom end of the adjusting screw rod 7 is abutted to the limiting strip 23, and the reversing assembly is axially limited.

In addition, in order to prevent the inner sleeve 3 from separating from the outer sleeve 2 during the impact, an annular notch 33 should be formed on the outer side wall of the inner sleeve 3, and a stopper ring 22 should be formed on the inner side wall of the outer sleeve 2. When assembled, the stop collar 22 is placed inside the annular slot 33, thereby limiting the axial position between the inner sleeve 3 and the outer sleeve 2.

It should be noted that, in order to facilitate the assembly between the inner sleeve 3 and the outer sleeve 2, the inner sleeve 3 in the present embodiment may include an inner sleeve body and a bottom plate connected by a bolt, and the outer sleeve 2 may also include an outer sleeve body and a top plate connected by a bolt (neither shown in the figures). Specifically, the limiting ring 22 is arranged on the inner side wall of the outer sleeve body, an avoiding groove is formed at the bottom end of the side wall of the inner sleeve body, and the annular groove 33 is formed between the inner wall of the avoiding groove and the bottom plate after the bottom plate is mounted on the bottom surface of the inner sleeve body. When assembling, a worker inserts the inner sleeve body into the outer sleeve body from the top down to allow the retainer ring 22 to enter the escape groove, and then mounts the bottom plate on the bottom of the inner sleeve body by means of bolts to allow the retainer ring 22 to enter the inner wall of the groove and the annular groove 33 of the bottom plate. Next, the worker may mount the top plate on top of the outer sleeve body, thereby completing the assembly between the inner sleeve 3 and the outer sleeve 2.

When the impact assembly is subjected to impact from an impact hammer, the impact force is transmitted along the two connecting rods 42 and is finally uniformly distributed on two sides of the axis of the balance wheel axle 92. Compared with the traditional impact mode, the impact mode can avoid the condition that the stress on two sides of the axis of the balance wheel shaft 92 is uneven, so that the roundness of the balance wheel 1 is prevented from being influenced.

In order to adjust the action direction of the impact force conveniently, all positions of the end surface of the balance wheel axle 92 obtain the impact with the same force, and the inner sleeve 3 rotates in the ascending process of the impact hammer. As shown in fig. 5 and 6, the inner sleeve 3 in the present embodiment may include an adjusting section 31 and a receiving section 32, wherein the adjusting section 31 is located above the receiving section 32, and the inner diameter of the adjusting section 31 is smaller than the inner diameter of the receiving section 32. A plurality of spiral grooves 311 with the same rotation direction are arranged on the inner side wall of the adjusting section 31, the bottom openings of the spiral grooves 311 are located on the bottom end surface of the adjusting section 31, and the top openings are located on the top end surface of the adjusting section 31. Correspondingly, the operating assembly should include a guide plunger 6, and in order to realize the installation of the guide plunger 6, a mounting hole 531 is formed on the side wall of the impact hammer, and the guide plunger 6 is telescopically arranged in the mounting hole 531.

Fig. 8 is a schematic view of the striking hammer at a rising limit position, and fig. 9 is a schematic view of the striking hammer at a falling limit position, as shown in the figure, when the striking hammer performs a rising movement, the guide plunger 6 is extended to the outside of the mounting hole 531, and after the striking hammer enters the regulation section 31, the guide plunger 6 enters the inside of the spiral groove 311 along the bottom opening and leaves the spiral groove 311 along the top opening. In this process, the side wall of the guide plunger 6 presses the inner wall of the spiral groove 311, so that the inner sleeve 3 rotates with the rise of the striking hammer, and the rotation angle of the inner sleeve 3 is the same as the rotation angle of the spiral groove 311. When the striking hammer performs descending motion, the guide plunger 6 retracts inside the mounting hole 531, and after the striking hammer enters the accommodating section 32, the bottom surface of the striking hammer impacts the top surface of the upper baffle plate 41, so that the impact assembly obtains the impact force required for disassembling and assembling the balance staff 92.

In the actual use process, staff can drive the impact hammer to continuously carry out lifting movement for many times, so that the impact point of two adjacent impact actions is changed, and the impact force generated by the device can be uniformly applied to all directions of the end face of the balance wheel axle 92. When the balance axle 92 is disassembled, the impact effect can effectively prevent the balance 91 from deforming due to the disassembly of the balance axle 92, and when the balance axle 92 is assembled, the impact effect can enable the balance mounting section 922 to generate uniform flange expansion, so that the defect of roundness flatness or concentricity of the balance 91 after the balance axle 92 is assembled is avoided.

In order to ensure that the guiding plunger 6 in the device can accurately enter the spiral groove 311 in each ascending process of the impact hammer, a plurality of spiral grooves 311 arranged on the inner side wall of the adjusting section 31 are uniformly arranged on the peripheral side of the axis of the adjusting section 31, and the included angle formed by the connecting lines of two adjacent bottom openings and the axis of the adjusting section 31 is equal to the rotation angle of the spiral groove 311.

For example, in the present embodiment, four spiral grooves 311 may be disposed on the inner side wall of the adjusting section 31, the rotation angle of each spiral groove 311 is 90 °, and the included angle formed by the connecting line of the bottom openings of two adjacent spiral grooves 311 and the axis of the adjusting section 31 is also 90 °. After the guiding plunger 6 moves along the bottom opening of the first spiral groove 311 to the top opening, the inner sleeve 3 will rotate 90 °, and the bottom opening of the second spiral groove 311 will rotate to the lower side of the guiding plunger 6. Since the pilot plunger 6 will be retracted inside the mounting hole 531 during the descent of the impact hammer, the second spiral groove 311 does not affect the descent process of the impact hammer. When the striking hammer is raised again, the guide plungers 6 extended to the outside of the mounting holes 531 smoothly enter the inside of the bottom openings of the second spiral grooves 311, thereby driving the inner sleeve 3 to rotate by 90 ° again.

In order to facilitate the lifting action of the impact hammer driven by the staff, the impact hammer in this embodiment may include a handheld portion 51, an impact rod 52 and a hammer head 53 connected in sequence from top to bottom. Wherein the handheld part 51 is located the top of outer sleeve 2, and the tup 53 is located inside inner sleeve 3, mounting hole 531 sets up on the lateral wall of tup 53, and the external diameter of tup 53 equals with the internal diameter of adjusting section 31. To prevent the striking hammer from rotating during the lifting and lowering, a communication hole 21 for receiving the striking rod 52 should be formed on the top surface of the outer sleeve 2, and a guide groove 211 is formed on the inner sidewall of the communication hole 21. Accordingly, a guide bar 521 having a length direction parallel to the axial direction of the striker 52 is provided on the side wall of the striker 52, and the guide bar 521 is inserted into the guide groove 211.

When the impact hammer is used, a worker can hold the handheld part 51 to drive the impact hammer to perform lifting action, so that the inner sleeve 3 rotates and impacts the impact assembly. The striking rod 52 is also provided with a first spring 54, and when the hand-held tool is attached, one end of the first spring 54 is connected to the top surface of the outer sleeve 2 and the other end thereof is connected to the bottom surface of the hand-held part 51. When the worker drives the striking hammer up, the first spring 54 will be elongated, and after the worker releases the hand-held portion 51, the elastic force inside the first spring 54 will drive the striking hammer down, thereby providing the impact force to the striking assembly.

Alternatively, in order to perform the telescopic movement of the guide plunger 6, as shown in fig. 7, the present embodiment may be provided with an operation hole 511 communicating with the installation hole 531 on the top surface of the striking hammer, and a piston rod 512 is provided inside the operation hole 511, and the top end of the piston rod 512 is connected to the pressing piece 5121 above the striking hammer. Accordingly, an annular mounting groove 5311 is provided on the inner side wall of the mounting hole 531, and a stopper 61 and a second spring 62 are provided on the guide plunger 6. When assembling, the stop piece 61 is disposed inside the annular mounting slot 5311, and one end of the second spring 62 is connected to the stop piece 61, and the other end is connected to the end surface of the annular mounting slot 5311 far from the operation hole 511.

When the striking hammer performs a lifting motion, a worker applies pressure to the pressing piece 5121 to drive the piston rod 512 to descend, and the bottom end of the piston rod 512 presses the end surface of the guide plunger 6 close to the operation hole 511, so that the guide plunger 6 protrudes out of the mounting hole 531. When the hammer is moved downward, the worker releases the pressing piece 5121, the guiding plunger 6 is retracted into the mounting hole 531 by the elastic force of the second spring 62, and the end surface of the guiding plunger 6 close to the operation hole 511 presses the bottom end of the piston rod 512, so that the piston rod 512 is lifted and restored.

As another alternative of this embodiment, in order to facilitate the piston rod 512 to extrude the guide plunger 6, the bottom end surface of the piston rod 512 may be provided with a spherical surface, and accordingly, guide spherical surfaces should be provided at both ends of the guide plunger 6. When mutual compression occurs between the piston rod 512 and the guide plunger 6, the guide spherical surface provided at the end of the guide plunger 6 near the operation hole 511 comes into contact with the spherical surface, thereby reducing frictional loss between the guide plunger 6 and the piston rod 512. When the guide plunger 6 extends out of the mounting hole 531, the guide spherical surface provided at the end of the guide plunger 6 remote from the operation hole 511 will contact the inner wall of the spiral groove 311, thereby reducing the frictional resistance between the guide plunger 6 and the inner wall of the spiral groove 311 and ensuring smooth rotation of the inner sleeve 3.

The following explains the effects of the above-described scheme:

the embodiment provides a frock is used in dismouting of balance staff, can exert the impact force to impact assembly through the descending action of striking hammer to rise through striking hammer and impel the inner skleeve and rotate. Compared with the prior art, the device can enable the impact force to act on each position of the end surface of the balance wheel shaft uniformly, thereby preventing the roundness and concentricity of the balance wheel from being influenced and further reducing the operation difficulty of workers. Secondly, this device accessible piston rod orders about the direction plunger and stretches out and draws back to avoid the inner skleeve to take place to rotate at the impact in-process. In addition, this device can switch the locating hole, adjust switching-over subassembly height and change the drift according to actual demand, consequently can satisfy multiple actual demand.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a frock is used in dismouting of balance shaft which characterized in that includes:

the engine base comprises a bearing table (13) and a positioning sleeve (11), the positioning sleeve (11) is arranged above the bearing table (13), and the positioning sleeve (11) is connected with the bearing table (13) through a connecting arm (12); a positioning groove (131) is arranged on the top surface of the bearing table (13), and the positioning groove (131) is aligned with the positioning sleeve (11);

the reversing assembly comprises an outer sleeve (2) and an inner sleeve (3), the outer sleeve (2) is arranged in the positioning sleeve (11) in a height-adjustable mode, and the inner sleeve (3) is rotatably arranged in the outer sleeve (2); two connecting holes are formed in the bottom surface of the inner sleeve (3), and the two connecting holes are distributed on two sides of the axis of the inner sleeve (3) in a mirror image manner; the inner sleeve (3) comprises an adjusting section (31) and a containing section (32), the adjusting section (31) is positioned above the containing section (32), and the inner diameter of the adjusting section (31) is smaller than that of the containing section (32); a plurality of spiral grooves (311) with the same rotating direction are arranged on the inner side wall of the adjusting section (31), the bottom opening of each spiral groove (311) is positioned on the bottom end face of the adjusting section (31), and the top opening is positioned on the top end face of the adjusting section (31); the spiral grooves (311) are uniformly arranged on the peripheral side of the axis of the adjusting section (31), and the included angle formed by the connecting lines of two adjacent bottom openings and the axis of the adjusting section (31) is equal to the rotation angle of the spiral grooves (311);

the impact assembly comprises a connecting piece and a punch (44), the connecting piece comprises an upper baffle (41), a lower baffle (43) and two connecting rods (42), the upper baffle (41) is arranged inside the accommodating section (32), the lower baffle (43) is arranged below the inner sleeve (3), the two connecting rods (42) are respectively positioned inside the two connecting holes, one end of each connecting rod (42) is connected with the upper baffle (41), and the other end of each connecting rod is connected with the lower baffle (43); the punch head (44) is detachably arranged on the bottom surface of the lower baffle plate (43), an accommodating hole (441) is formed in the bottom surface of the punch head (44), and the accommodating hole (441) is aligned with the positioning groove (131);

the operating assembly comprises an impact hammer and a guide plunger (6), the impact hammer is arranged inside the inner sleeve (3) in a lifting mode, a mounting hole (531) is formed in the side wall of the impact hammer, and the guide plunger (6) is arranged inside the mounting hole (531) in a telescopic mode; when the impact hammer rises, the guide plunger (6) extends to the outside of the mounting hole (531), and after the impact hammer enters the adjusting section (31), the guide plunger (6) enters the inside of the spiral groove (311) so that the inner sleeve (3) rotates along with the rising of the impact hammer; when the impact hammer descends, the guide plunger (6) retracts into the mounting hole (531), and after the impact hammer enters the accommodating section (32), the bottom surface of the impact hammer impacts the top surface of the upper baffle (41).

2. The tooling for attaching and detaching a balance staff according to claim 1, characterized in that: the striking hammer comprises a handheld part (51), a striking rod (52) and a hammer head (53) which are sequentially connected from top to bottom, wherein the handheld part (51) is positioned above the outer sleeve (2), the hammer head (53) is positioned inside the inner sleeve (3), and a communication hole (21) for accommodating the striking rod (52) is formed in the top surface of the outer sleeve (2); the outer diameter of the hammer head (53) is equal to the inner diameter of the adjusting section (31), and the mounting hole (531) is formed in the side wall of the hammer head (53); the striking rod (52) is also sleeved with a first spring (54), one end of the first spring (54) is connected with the top surface of the outer sleeve (2), and the other end of the first spring is connected with the bottom surface of the handheld part (51).

3. The tooling for attaching and detaching a balance staff according to claim 2, characterized in that: a guide strip (521) is arranged on the side wall of the impact rod (52), and the length direction of the guide strip (521) is parallel to the axial direction of the impact rod (52); a guide groove (211) is formed in the inner side wall of the communication hole (21), and the guide strip (521) is arranged in the guide groove (211).

4. The tool for attaching and detaching a balance staff according to claim 1, wherein: an operation hole (511) is formed in the top surface of the impact hammer, the operation hole (511) is communicated with the installation hole (531), a piston rod (512) is arranged inside the operation hole (511), and the top end of the piston rod (512) is connected with a pressing sheet (5121) above the impact hammer; an annular mounting cutting groove (5311) is formed in the inner side wall of the mounting hole (531), a blocking piece (61) and a second spring (62) are arranged on the guide plunger (6), the blocking piece (61) is located inside the annular mounting cutting groove (5311), one end of the second spring (62) is connected with the blocking piece (61), and the other end of the second spring is connected with the end face, away from the operation hole (511), of the annular mounting cutting groove (5311); when the piston rod (512) rises, the elastic force of the second spring (62) drives the guide plunger (6) to retract into the mounting hole (531); when the piston rod (512) descends, the bottom end of the piston rod (512) presses the end face, close to the operation hole (511), of the guide plunger (6), so that the guide plunger (6) extends out of the mounting hole (531).

5. The tooling for attaching and detaching a balance staff according to claim 4, wherein: the bottom end face of the piston rod (512) is a spherical face, and guide spherical faces are arranged at two ends of the guide plunger (6).

6. The tool for attaching and detaching a balance staff according to claim 1, wherein: the outer side wall of the inner sleeve (3) is provided with an annular cutting groove (33), the inner side wall of the outer sleeve (2) is provided with a limiting ring (22), and the limiting ring (22) is arranged in the annular cutting groove (33).

7. The tooling for attaching and detaching a balance staff according to claim 1, characterized in that: the side wall of the outer sleeve (2) is provided with a limiting strip (23), and the length direction of the limiting strip (23) is parallel to the axial direction of the outer sleeve (2); a limiting groove (111) is formed in the inner side wall of the positioning sleeve (11), and the limiting strip (23) is arranged in the limiting groove (111); still be equipped with on the lateral wall of position sleeve (11) and adjust protruding, be equipped with screw hole (112) on adjusting bellied terminal surface, screw hole (112) are linked together with spacing groove (111), are equipped with adjusting screw (7) in screw hole (112) inside, just the bottom and the spacing of adjusting screw (7) are held against.

8. The tooling for attaching and detaching a balance staff according to claim 1, characterized in that: the machine base further comprises a bearing sheet (8), a connecting shaft (132) is arranged on the top surface of the bearing table (13), and the bearing sheet (8) is rotatably sleeved on the connecting shaft (132); a plurality of positioning holes (81) with different inner diameters are arranged on the bearing sheet (8), the positioning holes (81) are annularly arranged on the periphery of the connecting shaft (132), and the distance from any one positioning hole (81) to the connecting shaft (132) is equal to the distance from the positioning groove (131) to the connecting shaft (132).

9. The tooling for attaching and detaching a balance staff according to claim 8, wherein: the bearing sheet (8) is provided with a first locking hole (82), a locking pin (821) is arranged in the first locking hole (82), and a plurality of second locking holes (133) used for containing the locking pin (821) are formed in the bearing table (13).

10. The tooling for attaching and detaching a balance staff according to claim 1, characterized in that: be equipped with ejection of compact incision (134) on the lateral wall of plummer (13), ejection of compact incision (134) are linked together with constant head tank (131).