A special quick-grinding head for polishing machine

Abstract

The invention discloses a special quick-clamping grinding head for a polishing machine, comprising a driving motor, an output shaft of the driving motor being provided with a clamping mechanism, and a motor fixing plate being provided between the driving motor and the clamping mechanism, the clamping mechanism comprising a rotating shaft, the rotating shaft being provided with a limit cavity and a sliding cavity in sequence, the limit cavity being provided with a guide sleeve, and a linkage part being slidably connected, a compression spring being provided between the guide sleeve and the linkage part; a clamping body being slidably connected inside the guide sleeve, the clamping body comprising a plurality of elastic clamping jaws arranged at intervals, and the outer side walls of the elastic clamping jaws being provided with guiding inclined surfaces; the driving motor and the rotating shaft driving the grinding consumables are separated by a sealed chamber spacer formed by the motor fixing plate, so as to reduce heat transfer; the scheme realizes an integrated function of integrating power transmission, heat insulation and automatic replacement of grinding consumables through the linkage design of the driving motor and the clamping mechanism, is convenient and fast, is easy to improve work efficiency, and ensures the stability of the motor operation.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, in particular to a special quick-grinding clamping head for a polishing machine. Background Art

[0002] With the rapid development of modern manufacturing, precision machining and surface treatment technologies have become crucial in many fields, especially in metal processing, machinery manufacturing, automobile industry and the production of electronic products. Polishing is an important step to improve product surface quality, appearance and performance. As one of the core equipment, polishing machines are widely used for smooth surface treatment of materials. Especially when processing workpieces with complex shapes and fine surfaces, the performance of polishing machines directly affects the quality and production efficiency of products. With the improvement of machining accuracy requirements, the technical requirements for polishing machines are getting higher and higher, especially in the design of grinding heads, clamping methods and replacement efficiency of consumables. The demand is also constantly developing and upgrading.

[0003] At present, the design of polishing machine grinding heads mostly relies on traditional mechanical clamping methods, which usually require manual replacement of grinding consumables, resulting in cumbersome and inefficient equipment operation. In addition, most existing polishing machine grinding heads use a fixed structure to connect the drive motor and the clamping mechanism, which cannot effectively isolate the heat generated by the operation of the motor, causing heat to be transferred to the grinding head and the clamping part, affecting the grinding efficiency and the service life of the grinding head. Especially when running at high load for a long time, the overheating problem of the equipment often causes the temperature of the grinding head to be too high, which not only affects the grinding effect, but may also cause the clamping part to get stuck or fail due to thermal expansion.

[0004] In view of this, it is necessary to improve the design of the grinding head of the polishing machine in the prior art to solve the technical problem that the thermal insulation effect of the clamped grinding head is poor and the use effect is affected. Summary of the invention

[0005] The purpose of the present invention is to provide a special quick-grinding head for a polishing machine to solve the above technical problems.

[0006] To achieve this object, the present invention adopts the following technical solutions: A special quick-clamping grinding head for a polishing machine, comprising a driving motor, an output shaft of the driving motor is provided with a clamping mechanism, a motor fixing plate is provided between the driving motor and the clamping mechanism, and a sealed chamber is formed in the interval space between the motor fixing plate and the output shaft of the driving motor; The clamping mechanism comprises a rotating shaft, the rotating shaft is provided with a limiting cavity and a sliding cavity in sequence, and the limiting cavity is communicated with the sealing chamber; The limiting cavity is provided with a guide sleeve and a linkage piece in sliding connection, and a compression spring is provided between the guide sleeve and the linkage piece; wherein the outer diameter of the linkage piece is the same as the inner diameter of the sliding cavity; A clamp body is slidably connected inside the guide sleeve, one end of the clamp body is fixedly connected to the linkage member, the clamp body includes a plurality of elastic clamping claws arranged at intervals, the outer side walls of the elastic clamping claws are provided with guide slopes, the guide slopes are kept in contact with the guide sleeve, so that when the clamp body slides along the guide sleeve, the plurality of elastic clamping claws approach or open each other.

[0007] Optionally, the output shaft of the driving motor is connected to a coupling, one end face of the coupling is provided with a plurality of arc-shaped protrusions, the plurality of arc-shaped protrusions are commonly clamped with a limit ring, the outer periphery of the limit ring is provided with a plurality of arc-shaped clamping blocks, and a limit groove is formed between two adjacent arc-shaped clamping blocks; A plug-in block is provided at one end of the rotating shaft, and the plug-in block is plugged into the limiting groove so that the coupling and the rotating shaft are fixedly connected in the circumferential direction.

[0008] Optionally, the limiting cavity is a chamfered hole, and a chamfered shaft is provided at one end of the linkage member, and the chamfered shaft can be slidably inserted into the chamfered hole.

[0009] Optionally, the clamping mechanism further comprises a main body shell, one end of which is fixedly connected to the motor fixing plate; The main body shell is provided with a waterproof air blowing hole, and the waterproof air blowing hole is communicated with the air path hole on the motor fixing plate.

[0010] Optionally, an installation groove is provided on the outer side wall of the rotating shaft, and two bearings are installed in the installation groove and are arranged at intervals, and the bearings are arranged between the rotating shaft and the main body shell; A heat-insulating gasket is arranged between the two bearings, and a plurality of annular grooves are respectively provided on the inner side and the outer side of the heat-insulating gasket, and the annular grooves are used to accommodate sealing rings.

[0011] Optionally, a first end cover is provided at one end of the main body shell away from the driving motor, the first end cover is sleeved on one end of the rotating shaft, and a gap space is formed between the first end cover and the rotating shaft, and an oil seal ring is installed in the gap space.

[0012] Optionally, an outer ring portion is provided at one end of the first end cover, and the outer ring portion is sleeved with the second end cover, wherein the first end cover and the second end cover are sealed and connected via a sealing ring provided on the outer ring portion.

[0013] Optionally, an annular gap is provided between one end of the rotating shaft and the guide sleeve, and a straight hole portion is provided on the rotating shaft along its length direction, and two ends of the straight hole portion are respectively connected to the annular gap and the waterproof blowing hole.

[0014] Optionally, the output shaft of the driving motor passes through the driving motor, and a group of the clamping mechanisms are respectively provided at both ends of the output shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects: when working, high-pressure gas is first introduced into the sealed chamber so that the high-pressure gas acts on the limit chamber, pushing the linkage to drive the clamp body to move outward, so that the multiple elastic jaws open each other and the grinding consumables are placed in. After the supply of air pressure is stopped, the clamp body retracts along the guide sleeve under the action of the compression spring, so that the multiple elastic jaws approach each other to clamp the grinding consumables; then the driving motor runs, and its output shaft rotates to drive the rotating shaft and the clamp body to rotate at high speed, thereby realizing the grinding work. When the grinding consumables need to be removed, high-pressure gas is introduced again to drive the clamp body to open; wherein, the driving motor and the rotating shaft that drives the grinding consumables are separated by a sealed chamber formed by a motor fixing plate to reduce heat transfer; this scheme realizes an integrated function of power transmission, heat insulation and automatic replacement of grinding consumables through the linkage design of the driving motor and the clamping mechanism, which is convenient and fast, easy to improve work efficiency, and ensures the stability of the motor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the special quick-grinding head for this polishing machine; Figure 2 This is a schematic diagram of the cross-sectional structure of the special quick-grinding head for the polishing machine; Figure 3This is a schematic diagram of the structure of the clamping body for the quick clamping grinding head of the polishing machine; Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating shaft of the special quick-grinding head for the polishing machine; Figure 5 This is a schematic diagram of the structure of the coupling for the quick-clamping grinding head of this polishing machine.

[0019] Illustrations: drive motor 1, output shaft 2, clamping mechanism 3, motor fixing plate 4, sealing chamber 5, rotating shaft 6, limiting chamber 7, sliding chamber 8, guide sleeve 9, linkage part 10, compression spring 11, clamp body 12, elastic clamping claw 13, guide slope 14, coupling 15, arc-shaped protrusion 16, limiting ring 17, arc-shaped clamping block 18, limiting groove 19, plug-in block 20, main body shell 21, waterproof blowing hole 22, air path hole 23, installation groove 24, bearing 25, thermal insulation gasket 26, annular groove 27, first end cover 28, oil seal ring 29, outer ring portion 30, second end cover 31, annular gap 32, straight hole portion 33. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] Combination Figures 1 to 5As shown, an embodiment of the present invention provides a special quick-clamping grinding head for a polishing machine, including a driving motor 1, the output shaft 2 of the driving motor 1 is provided with a clamping mechanism 3, and a motor fixing plate 4 is provided between the driving motor 1 and the clamping mechanism 3, and the interval space between the motor fixing plate 4 and the output shaft 2 of the driving motor 1 forms a sealed chamber 5; the clamping mechanism 3 includes a rotating shaft 6, and the rotating shaft 6 is provided with a limiting cavity 7 and a sliding cavity 8 in sequence, and the limiting cavity 7 is connected to the sealed chamber 5.

[0024] The limiting cavity 7 is provided with a guide sleeve 9, and a linkage member 10 is slidably connected thereto, and a compression spring 11 is provided between the guide sleeve 9 and the linkage member 10; wherein, the outer diameter of the linkage member 10 is the same as the inner diameter of the sliding cavity 8; a clamp body 12 is slidably connected inside the guide sleeve 9, one end of the clamp body 12 is fixedly connected to the linkage member 10, the clamp body 12 comprises a plurality of elastic clamping jaws 13 arranged at intervals, and the outer side wall of the elastic clamping jaw 13 is provided with a guide slope 14, and the guide slope 14 is kept in contact with the guide sleeve 9, so that when the clamp body 12 slides along the guide sleeve 9, the plurality of elastic clamping jaws 13 approach or open each other.

[0025] The working principle of the present invention is as follows: when working, high-pressure gas is first introduced into the sealed chamber 5, so that the high-pressure gas acts on the limit chamber 7, pushing the linkage member 10 to drive the clamp body 12 to move outward, so that a plurality of elastic clamping claws 13 are opened to each other, and the grinding consumables are placed. After the supply of gas pressure is stopped, the clamp body 12 is retracted along the guide sleeve 9 under the action of the compression spring 11, so that a plurality of elastic clamping claws 13 are close to each other to clamp the grinding consumables; then the driving motor 1 is operated, and its output shaft 2 rotates to drive the rotating shaft 6 and the clamp body 12 to rotate at high speed, thereby realizing the grinding work. When the grinding consumables need to be removed, high-pressure gas is introduced again to drive the clamp body 12 to open; wherein, the driving motor 1 and the rotating shaft 6 driving the grinding consumables are separated by the sealed chamber 5 formed by the motor fixing plate 4 to reduce heat transfer; this scheme realizes the integrated function of power transmission, heat insulation and automatic replacement of grinding consumables through the linkage design of the driving motor 1 and the clamping mechanism 3, which is convenient and fast, easy to provide work efficiency, and ensures the stability of the motor operation.

[0026] In this embodiment, the output shaft 2 of the driving motor 1 is connected to a coupling 15, and one end face of the coupling 15 is provided with a plurality of arc-shaped protrusions 16, and the plurality of arc-shaped protrusions 16 are jointly clamped with a limit ring 17, and the outer periphery of the limit ring 17 is provided with a plurality of arc-shaped clamping blocks 18, and a limit groove 19 is formed between two adjacent arc-shaped clamping blocks 18; one end of the rotating shaft 6 is provided with a plug-in block 20, and the plug-in block 20 is inserted into the limit groove 19, so that the coupling 15 and the rotating shaft 6 are circumferentially fixedly connected.

[0027] It should be noted that the coupling 15 in the present embodiment is provided with a limit ring 17 and an arc-shaped clamping block 18, the purpose of which is to cooperate with the plug-in block 20 provided at one end of the rotating shaft 6 to achieve circumferential limit fixation of the two, that is, the two will not rotate relative to each other, while ensuring that the rotating shaft 6 can be quickly plugged into the coupling 15 through the plug-in block 20 for easy installation.

[0028] In this embodiment, the limiting cavity 7 is a chamfered hole, and a chamfered shaft is provided at one end of the linkage member 10, and the chamfered shaft is slidably inserted into the chamfered hole, thereby realizing a slidable connection between the linkage member 10 and the rotating shaft 6, and realizing circumferential fixation, so that the two can rotate synchronously.

[0029] In this embodiment, the clamping mechanism 3 also includes a main body shell 21, one end of which is fixedly connected to the motor fixing plate 4; the main body shell 21 is provided with a waterproof air blowing hole 22, which is connected to the air path hole 23 on the motor fixing plate 4.

[0030] It should be noted that in the present solution, since the main shell 21 (i.e., the grinding working end, a high-incidence area for generating heat) is isolated from the drive motor 1, in order to prevent the temperature of the clamping mechanism 3 from being too high, a waterproof blowing hole 22 is provided in the present solution to dissipate heat for the main shell 21. At the same time, the air inlet air path hole 23 is provided on the motor fixing plate 4, which is beneficial to protect the working end.

[0031] In this embodiment, an installation groove 24 is opened on the outer wall of the rotating shaft 6, and two bearings 25 are installed in the installation groove 24. The bearings 25 are arranged between the rotating shaft 6 and the main shell 21; a heat-insulating gasket 26 is arranged between the two bearings 25, and a plurality of annular grooves 27 are respectively opened on the inner and outer sides of the heat-insulating gasket 26, and the annular grooves 27 are used to accommodate sealing rings.

[0032] Combination Figure 2 and Figure 4 From the analysis, it can be known that bearings 25 are arranged at intervals at the positions of the mounting grooves 24. The bearings 25 are used to realize the rotational connection between the rotating shaft 6 and the main body shell 21 to ensure the smoothness of the rotation process of the rotating shaft 6. At the same time, a heat insulating gasket 26 is arranged between the two bearings 25, and an annular groove 27 and a sealing ring are arranged in cooperation. The heat insulating gasket 26 plays the role of heat insulation between the rotating shaft 6 and the main body shell 21, and at the same time ensures the sealing of the inner cavity of the rotating shaft 6 to avoid the situation where the temperature of the main body shell 21 is too high.

[0033] In this embodiment, a first end cover 28 is provided at one end of the main body shell 21 away from the driving motor 1. The first end cover 28 is sleeved on one end of the rotating shaft 6 and a gap space is formed between the first end cover 28 and the rotating shaft 6. An oil seal ring 29 is installed in the gap space.

[0034] It should be noted that the first end cover 28 protects the inner cavity of the rotating shaft 6 and the rotating shaft 6 itself, and at the same time provides installation margin through the gap space. The oil seal ring 29 seals to prevent external pollution from entering the inner cavity and affecting the rotation of the rotating shaft 6.

[0035] In this embodiment, an outer ring portion 30 is provided at one end of the first end cover 28 , and the outer ring portion 30 is sleeved with a second end cover 31 , wherein the first end cover 28 and the second end cover 31 are sealed and connected via a sealing ring provided on the outer ring portion 30 .

[0036] Furthermore, in this solution, the first end cover 28 and the second end cover 31 are designed to cooperate with each other. The second end cover 31 cooperates with the first end cover 28, and the second end cover 31 further plays a role in protecting and sealing the inner cavity of the rotating shaft 6.

[0037] In this embodiment, an annular gap 32 is provided between one end of the rotating shaft 6 and the guide sleeve 9, and a straight hole portion 33 is opened along the length direction of the rotating shaft 6, and both ends of the straight hole portion 33 are respectively connected to the annular gap 32 and the waterproof blowing hole 22.

[0038] Specifically, the present solution focuses on the distribution design of the air pipeline inside the main body shell 21, which is also the core innovative design of the present solution. An annular gap 32 is provided between one end of the rotating shaft 6 and the guide sleeve 9, wherein the waterproof blowing hole 22 connected to the straight hole portion 33 can form an air circuit (annular annular gap 32 and at least two sets of pipelines, air inlet and air outlet, arranged in cooperation), thereby achieving the heat dissipation effect on the entire main body shell 21.

[0039] In this embodiment, the output shaft 2 of the driving motor 1 runs through the driving motor 1, and a clamping mechanism 3 is respectively provided at both ends of the output shaft 2. It should be noted that a clamping mechanism 3 is respectively provided at both ends of the driving motor 1 in this solution, and a symmetrical design is adopted, which can provide more grinding head working area and direction on the one hand, and can also make full use of the output kinetic energy of the driving motor 1 on the other hand.

[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick grinding head for a polishing machine, characterized in that: It comprises a driving motor, the output shaft of the driving motor is provided with a clamping mechanism, a motor fixing plate is provided between the driving motor and the clamping mechanism, and a sealed chamber is formed in the interval space between the motor fixing plate and the output shaft of the driving motor; The clamping mechanism comprises a rotating shaft, the rotating shaft is provided with a limiting cavity and a sliding cavity in sequence, and the limiting cavity is communicated with the sealing chamber; The limiting cavity is provided with a guide sleeve and a linkage piece in sliding connection, and a compression spring is provided between the guide sleeve and the linkage piece; wherein the outer diameter of the linkage piece is the same as the inner diameter of the sliding cavity; A clamp body is slidably connected inside the guide sleeve, one end of the clamp body is fixedly connected to the linkage member, the clamp body includes a plurality of elastic clamping claws arranged at intervals, the outer side walls of the elastic clamping claws are provided with guide slopes, the guide slopes are kept in contact with the guide sleeve, so that when the clamp body slides along the guide sleeve, the plurality of elastic clamping claws approach or open each other.

2. The special quick-grinding head for polishing machine according to claim 1, characterized in that: The output shaft of the driving motor is connected to a coupling, one end surface of the coupling is provided with a plurality of arc-shaped protrusions, a plurality of the arc-shaped protrusions are commonly clamped with a limit ring, a plurality of arc-shaped clamping blocks are provided on the outer periphery of the limit ring, and a limit groove is formed between two adjacent arc-shaped clamping blocks; A plug-in block is provided at one end of the rotating shaft, and the plug-in block is plugged into the limiting groove so that the coupling and the rotating shaft are fixedly connected in the circumferential direction.

3. The special quick-grinding head for polishing machine according to claim 1, characterized in that: The limiting cavity is a chamfered hole, and a chamfered shaft is arranged at one end of the linkage member, and the chamfered shaft can be slidably inserted into the chamfered hole.

4. The special quick-grinding head for polishing machine according to claim 1, characterized in that: The clamping mechanism further comprises a main body shell, one end of which is fixedly connected to the motor fixing plate; The main body shell is provided with a waterproof air blowing hole, and the waterproof air blowing hole is communicated with the air path hole on the motor fixing plate.

5. The special quick-grinding head for polishing machine according to claim 4, characterized in that: An installation groove is provided on the outer side wall of the rotating shaft, and two bearings arranged at intervals are installed in the installation groove, and the bearings are arranged between the rotating shaft and the main body shell; A heat-insulating gasket is arranged between the two bearings, and a plurality of annular grooves are respectively provided on the inner side and the outer side of the heat-insulating gasket, and the annular grooves are used to accommodate sealing rings.

6. The special quick-grinding head for polishing machine according to claim 5, characterized in that: A first end cover is disposed at one end of the main body shell away from the driving motor. The first end cover is sleeved on one end of the rotating shaft and a gap space is formed between the first end cover and the rotating shaft. An oil seal ring is installed in the gap space.

7. The special quick-grinding head for polishing machine according to claim 6, characterized in that: An outer ring portion is provided at one end of the first end cover, and the outer ring portion is sleeved with the second end cover, wherein the first end cover and the second end cover are sealed and connected via a sealing ring provided on the outer ring portion.

8. The special quick-grinding head for polishing machine according to claim 7, characterized in that: An annular gap is provided between one end of the rotating shaft and the guide sleeve, and a straight hole portion is provided along the length direction of the rotating shaft, and two ends of the straight hole portion are respectively connected with the annular gap and the waterproof air blowing hole.

9. The fast grinding head for polishing machine according to claim 1, characterized in that: The output shaft of the driving motor passes through the driving motor, and a set of the clamping mechanisms is respectively arranged at both ends of the output shaft.

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