Planetary gear clamp for plasma spraying

Abstract

The utility model relates to a planetary gear clamp for plasma spraying, which is characterized in that the planetary gear clamp is used for clamping a workpiece to be sprayed and comprises a first fixed support shaft, a second fixed support shaft and a third fixed support shaft, the rotary table can rotate around the first fixed supporting shaft, a plurality of second fixed supporting shafts are installed on the surface of the rotary table at equal intervals, and all the second fixed supporting shafts define a circle with the first fixed supporting shaft as the center; the gear system comprises a sun gear and a plurality of planetary gears, the sun gear is fixedly connected with the first fixed supporting shaft, the planetary gears surround the sun gear and are meshed with the sun gear, and the planetary gears are rotationally arranged at the top of the second fixed supporting shaft; the workpiece containing rod is fixedly installed on the planetary gear, and a cavity used for detachably installing a workpiece to be sprayed is machined in the top of the workpiece containing rod. Compared with the prior art, the multi-workpiece spraying device has the advantages that multiple workpieces can be sprayed at the same time, and the spraying uniformity and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plasma spraying technical field especially is concerned with a kind of planetary gear clamps for plasma spraying. BACKGROUND

[0002] Plasma spraying is heated to melt or semi-melt state with plasma source as heat source, due to the high temperature between nozzle and electrode, the plasma gas in the spray gun expands rapidly, when passing through the nozzle, form high-speed plasma jet, the molten spraying material will be high-speed impact on the pretreated substrate surface by plasma jet, form coating. Plasma spraying can be applied in various fields, but limited spraying space limits its output, the number of workpieces held by plasma spraying clamp is limited, and the spraying efficiency is low.

[0003] Patent publication No. CN218710785U discloses a kind of plasma spraying tool fixture, it is related to the technical field of spraying equipment accessory device, specifically includes lower limit structure and with the upper limit structure of lower limit structure fixed connection, the middle part of the lower limit structure is equipped with through hole, the lower limit structure includes base and with the top of base movable connection turntable, the both sides of the top of turntable are fixedly connected with connecting column, the top of connecting column is fixedly connected with upper limit structure. But the plasma spraying tool fixture of this uses fixed rod one and fixed rod two to fix workpiece, and in its inner cavity inlaying electromagnet to fix workpiece, only can clamp fixed shape workpiece, and structure is complex. Patent publication No. CN215163049U discloses a kind of plasma spraying clamp and plasma spraying equipment. The plasma spraying clamp includes fastening bolt, fixed cover plate, support disc and rotating main shaft;The support disc is fixed at one end of the rotating main shaft;The fastening bolt is arranged to connect the support disc and the fixed cover plate together;The support disc and the fixed cover plate cooperate to form a to-be-sprayed workpiece containing rod near the edges of both, which is used for clamping the to-be-sprayed workpiece, but the plasma spraying clamp is used to stably clamp small size to-be-sprayed workpiece. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of planetary gear clamps for plasma spraying, to overcome the defects of above-mentioned prior art, make multiple workpieces revolve and rotate simultaneously, realize the simultaneous spraying of multiple workpieces, and improve the uniformity and production efficiency of spraying.

[0005] The utility model discloses a kind of planetary gear clamps for plasma spraying, to overcome the defects of above-mentioned prior art, make multiple workpieces revolve and rotate simultaneously, realize the simultaneous spraying of multiple workpieces, and improve the uniformity and production efficiency of spraying.

[0006] A kind of planetary gear clamp for plasma spraying, for the clamping of to-be-sprayed workpiece, the planetary gear clamp includes:

[0007] First fixed support shaft

[0008] A rotating disc rotatable around the first fixed support shaft, the surface of which is provided with a plurality of second fixed support shafts at equal intervals, all of which form a circle with the first fixed support shaft as the center;

[0009] A gear system comprising a sun gear fixedly connected with the first fixed support shaft, a plurality of planet gears surrounding the sun gear and meshing with the same, the planet gears being rotatably arranged on the top of the second fixed support shaft;

[0010] A workpiece containing rod fixedly installed on the planet gears, the top of which is provided with a cavity for detachably installing a workpiece to be sprayed, the workpiece to be sprayed being detachably installed in the workpiece containing rod to realize rotation of the workpiece around the first fixed support shaft while realizing revolution of the workpiece around the first fixed support shaft.

[0011] Further, in order to better adapt to workpieces of different shapes and sizes, the workpiece is fixedly connected with the workpiece containing rod through a workpiece connecting piece, and the workpiece connecting piece is arranged in the cavity of the workpiece containing rod.

[0012] Further, the side wall of the cavity is provided with a first threaded hole, and the workpiece connecting piece or the workpiece is fixed through the first threaded hole by a screw, which is simple and firm in structure.

[0013] Further, in order to better protect the planet gear clamp and avoid powder from being sprayed to the first fixed support shaft, the rotating disc, the gear system and the workpiece containing rod during plasma spraying, and to avoid the planet gear clamp from being jammed after long-term use, causing uneven spraying, the planet gear clamp further comprises a support protection piece connected with the rotating disc and used for supporting and protecting the workpiece containing rod, which comprises:

[0014] A protective cover detachably fixedly connected with the rotating disc, the surface of which comprises a plurality of second through holes distributed at equal intervals, the second through holes forming a circle with the first fixed support shaft as the center and allowing the workpiece containing rod to pass through;

[0015] A plurality of support columns fixed on the protective cover;

[0016] And a partition plate connected with the top end of the support column and allowing the workpiece and the workpiece containing rod to be respectively arranged in the upper and lower spaces, the surface of the partition plate comprising a plurality of third through holes distributed at equal intervals, the third through holes forming a circle with the first fixed support shaft as the center and allowing the workpiece or the workpiece connecting piece to pass through.

[0017] Further, in order to prevent the third through hole from affecting the rotation of the workpiece or workpiece connector, a gap of 0.05-0.5mm is provided between the workpiece or workpiece connector and the third through hole.

[0018] Further, in order to further protect the planetary gear clamp, the workpiece connector comprises:

[0019] a connecting bottom which is fitted with the cavity, and the surface of the connecting bottom is provided with a cover plate which covers the cavity of the workpiece accommodating rod, and the diameter of the cover plate is greater than the diameter of the connecting bottom;

[0020] a connecting top which is consistent with the shape and size of the workpiece bottom;

[0021] and a connecting middle part which connects the cover plate of the connecting bottom and the connecting top.

[0022] Further, the surface of the connecting top is provided with threads, and the workpiece bottom is provided with a second threaded hole which is adapted to the connecting top.

[0023] Further, the diameter of the cover plate is greater than the diameter of the connecting middle part, the diameter of the cover plate is greater than the diameter of the third through hole, and the cover plate is placed below the third through hole in use, which can effectively limit the workpiece connector and prevent it from flying out due to excessive rotation force during rotation, effectively improving the fastening and further reducing the possibility of accidents.

[0024] Further, in order to connect the rotating disc with the driving mechanism, the bottom of the rotating disc is provided with an annular base which surrounds the first fixed support shaft;

[0025] The planetary gear clamp further comprises a connecting seat which comprises a support shaft which is detachably connected with the first fixed support shaft, and a driving rotating shaft which is detachably connected with the base and drives the rotation of the base, and the driving rotating shaft is sleeved outside the support shaft and is rotationally connected with the support shaft.

[0026] Further, the driving rotating shaft is driven to rotate by an external driving mechanism, and the driving mechanism adopts conventional devices in the field, such as a driving motor.

[0027] Further, in order to reduce the friction between the rotating disc and the first fixed support shaft and improve the transmission efficiency, the rotating disc and the first fixed support shaft are connected through a first rolling bearing, the first fixed support shaft is connected with the inner ring of the first rolling bearing, and the rotating disc is connected with the outer ring of the first rolling bearing. In the working process, the inner ring of the first rolling bearing remains stationary, and the outer ring rotates.

[0028] Further, the sun gear is fixedly connected with a ring-shaped protrusion at the connection with the first fixed support shaft, the protrusion is an integral structure with the sun gear, an outer wall of the protrusion is connected with a second rolling bearing, the sun gear is connected with an inner ring of the second rolling bearing, and the inner ring of the second rolling bearing is static.

[0029] Further, in order to better fix the sun gear and the first fixed support shaft, a pressing block and a pin shaft are arranged above the protrusion of the sun gear and the first fixed support shaft, the pressing block covers the protrusion and the first fixed support shaft, and the pin shaft penetrates through the pressing block and the first fixed support shaft.

[0030] Further, in order to wrap the rotating disc and prevent external dust or plasma spraying powder from entering, the rotating disc further comprises a rotating disc shell which is fixedly connected with the periphery edge of the rotating disc and forms a cavity for accommodating the gear system.

[0031] Further, in order to make the rotating disc shell rotate with the rotating disc while reducing friction, prolonging the service life and working efficiency of the machine, a groove is arranged at the bottom of the rotating disc shell and connected with an outer ring of the second rolling bearing, and the outer ring of the second rolling bearing rotates during the working process.

[0032] A plurality of first through holes are arranged on the surface of the rotating disc shell at equal intervals, the first through holes surround a circle with the first fixed support shaft as the center and are used for the workpiece accommodating rod to penetrate through.

[0033] Further, a third rolling bearing is connected with the outside of the workpiece accommodating rod, and an outer ring of the third rolling bearing is connected with a connecting piece which is fixedly connected with the rotating disc shell.

[0034] Further, when the workpiece is clamped to the planetary gear clamp, the plasma spraying gun arranged above one side of the planetary gear clamp is used for spraying, in order to better spray the workpiece, the plasma spraying gun is mounted on an ABB robot and can move up and down and left and right.

[0035] Compared with the prior art, the utility model has the following advantages:

[0036] (1) The utility model discloses a rotating disc rotating makes the planetary gear rotate around the first fixed support shaft, because the sun gear and planetary gear are engaged, when the sun gear is static, the planetary gear also rotates around the second fixed support shaft, the workpiece accommodating rod loaded with the workpiece is fixed on the planetary gear, can clamp multiple workpieces simultaneously, and makes the workpiece rotate around the sun and revolves with the planetary gear, can realize the simultaneous spraying of multiple workpieces, improves the spraying efficiency and production, and guarantees the uniformity of the coating in the spraying process.

[0037] (2)The utility model discloses a workpiece connecting piece is clamped in workpiece containing rod first, then workpiece is connected with workpiece connecting piece, can be matched with the workpiece of many kinds of shapes by changing the shape of workpiece connecting piece top, prevent the situation that workpiece can not be clamped because of the shape of different sizes, only need to replace workpiece connecting piece in the use process, can satisfy the requirement of many kinds of workpieces.

[0038] (3)The utility model discloses a workpiece and workpiece containing rod are respectively in two spaces of upper and lower through the partition, better play the protection of planetary gear clamp to the planetary gear clamp, avoid the powder in the process of plasma spraying and spray to first fixed support shaft, carousel, gear system, workpiece containing rod, avoid the planetary gear clamp from jamming after long -term use, cause uneven spraying. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the structural diagram of planetary wheel clamp shown in example 1;

[0040] Figure 2 It is the explosion drawing of planetary gear clamp shown in example 1;

[0041] Figure 3 It is the plan view of gear system shown in example 1;

[0042] Figure 4 It is the sectional view of planetary gear clamp shown in example 1;

[0043] Figure 5 It is the front view of workpiece containing rod shown in example 1;

[0044] Figure 6 It is the sectional view of workpiece containing rod shown in example 1;

[0045] Figure 7 It is the structural diagram of support protection shown in example 1;

[0046] Figure 8 It is the structural diagram of workpiece connecting piece shown in example 1;

[0047] Figure 9 It is the sectional view of workpiece connecting piece shown in example 1;

[0048] Figure 10 It is the structural diagram of workpiece shown in example 1;

[0049] Figure 11 It is the structural diagram of connecting seat and base, first fixed support shaft shown in example 1;

[0050] Figure 12 It is the sectional view of connecting seat shown in example 1;

[0051] Figure 13 Fig. 1 is a schematic diagram of the connection of the first fixed support shaft and the sun gear, the rotating disc; Figure 4 Fig. 2 is an enlarged schematic diagram of part A in Fig. 1;

[0052] Figure 14 Fig. 3 is a schematic diagram of the mechanism of the rotating disc shell shown in Example 1;

[0053] Figure 15 Fig. 4 is a schematic diagram of the connection of the workpiece containing rod and the planetary gear; Figure 4 Fig. 5 is an enlarged schematic diagram of part B in Fig. 4;

[0054] Figure 16 Fig. 6 is a schematic diagram of the working state of the planetary gear clamp shown in Example 1.

[0055] Fig. 7 is a schematic diagram of the working state of the rotating disc shown in Example 1.

[0056] 1 - first fixed support shaft, 11 - first rolling bearing, 12 - second rolling bearing, 13 - pressing block, 14 - pin shaft;

[0057] 2 - rotating disc, 21 - second fixed support shaft, 22 - rotating disc shell, 221 - groove, 222 - first through hole, 23 - third rolling bearing, 24 - connecting piece, 25 - base;

[0058] 3 - gear system, 31 - sun gear, 311 - protrusion, 32 - planetary gear;

[0059] 4 - workpiece containing rod, 41 - cavity, 411 - first threaded hole;

[0060] 5 - support protection piece, 51 - protective cover, 511 - second through hole, 52 - support column, 53 - partition, 531 - third through hole;

[0061] 6 - workpiece connecting piece, 61 - connecting bottom, 611 - cover plate, 62 - connecting top, 63 - connecting middle part;

[0062] 7 - connecting seat, 71 - support shaft, 72 - driving rotating shaft;

[0063] 8 - workpiece, 81 - second threaded hole;

[0064] 9 - plasma torch. DETAILED DESCRIPTION

[0065] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments. In the following embodiments or embodiments, if no special function components or structures are specified, it indicates that they are all conventional components or conventional structures adopted in the field to realize the corresponding functions.

[0066] It should be noted that in the description of the utility model, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0067] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0068] A planetary gear clamp for plasma spraying, as shown in Figures 1-4 for clamping a workpiece 8 to be sprayed, the planetary gear clamp comprises:

[0069] A first fixed support shaft 1;

[0070] A turntable 2 rotatable around the first fixed support shaft 1, the surface of the turntable 2 is provided with a plurality of second fixed support shafts 21 at equal intervals, and all the second fixed support shafts 21 form a circle with the first fixed support shaft 1 as the center;

[0071] A gear system 3 comprising a sun gear 31 fixedly connected with the first fixed support shaft 1, a plurality of planetary gears 32 surrounding the sun gear 31 and meshing with the sun gear 31, the planetary gears 32 are rotatably arranged on the top of the second fixed support shaft 21;

[0072] A workpiece containing rod 4 is fixedly installed on the planetary gear 32, and the top of the workpiece containing rod 4 is machined with a cavity 41 for detachably installing a workpiece 8 to be sprayed. The workpiece 8 to be sprayed is detachably installed in the workpiece containing rod 4, so that the workpiece 8 rotates around the first fixed support shaft 1 while realizing self-rotation.

[0073] The working process and principle of the planetary gear clamp are as follows:

[0074] The rotating disc 2 rotates around the first fixed support shaft 1, thereby driving the planetary gear 32 connected thereto to rotate around the first fixed support shaft 1, further driving the workpiece containing rod 4 to rotate around the first fixed support shaft 1, and finally driving the workpiece 8 to rotate around the first fixed support shaft 1, thereby realizing the revolution of the workpiece 8. When the planetary gear 32 rotates around the first fixed support shaft 1, the sun gear 31 is fixed with the first fixed support shaft 1 and remains stationary. Since the planetary gear 32 is engaged with the sun gear 31, the planetary gear 32 rotates around the second fixed support shaft 21 fixed on the rotating disc 2 when the planetary gear 32 rotates around the first fixed support shaft 1, thereby driving the workpiece containing rod 4 to rotate, so that the workpiece 8 rotates while revolving around the first fixed support shaft 1. The plasma spray gun 9 is arranged above one side of the planetary gear clamp to spray the workpiece 8, and can spray multiple workpieces 8 at the same time. When the planetary gear 32 rotates for multiple revolutions, each face of all workpieces is sprayed.

[0075] In some more specific embodiments, as shown in Figure 1 In order to better adapt to workpieces 8 of different shapes and sizes, the workpiece 8 is fixedly connected with the workpiece containing rod 4 through a workpiece connecting piece 6, and the workpiece connecting piece 6 is arranged in the cavity 41 of the workpiece containing rod 4.

[0076] In some more specific embodiments, as shown in Figure 5 and 6 The side wall of the cavity 41 is provided with a first threaded hole 411, and the workpiece connecting piece 6 or the workpiece 8 is fixed through the first threaded hole 411 by a screw, which is simple and firm in structure.

[0077] In some more specific embodiments, as shown in Figure 1 , 2 and 7, in order to better protect the planetary gear clamp and avoid powder from being sprayed onto the first fixed support shaft 1, the rotating disc 2, the gear system 3, and the workpiece containing rod 4 during the plasma spraying process, and to avoid the planetary gear clamp from being jammed after long-term use, causing uneven spraying, the planetary gear clamp further comprises a support protection piece 5 connected with the rotating disc 2 and used for supporting and protecting the workpiece containing rod 4, which comprises:

[0078] A protective cover 51 is detachably fixed to the rotating disc 2, and the surface of the protective cover 51 includes a plurality of second through holes 511 which are equidistantly distributed and enclose a circle with the first fixed support shaft 1 as the center and allow the workpiece accommodating rod 4 to pass through;

[0079] A plurality of support columns 52 are fixed to the protective cover 51;

[0080] A partition 53 is connected to the top end of the support column 52 and allows the workpiece 8 and the workpiece accommodating rod 4 to be in the upper and lower spaces respectively, and the surface of the partition 53 includes a plurality of third through holes 531 which are equidistantly distributed and enclose a circle with the first fixed support shaft 1 as the center and allow the workpiece 8 or the workpiece connecting member 6 to pass through.

[0081] In some more specific embodiments, in order to make the third through holes 531 not affect the rotation of the workpiece 8 or the workpiece connecting member 6 during the working process, there is a gap of 0.05-0.5mm, preferably 0.1mm, between the workpiece 8 or the workpiece connecting member 6 and the third through holes 531.

[0082] In some more specific embodiments, as shown in Figure 8 and 9 In order to further protect the planetary gear clamp, the workpiece connecting member 6 includes:

[0083] A connecting bottom 61 which is fitted to the cavity 41 and has a cover plate 611 on the surface to cover the cavity 41 of the workpiece accommodating rod 4, and the diameter of the cover plate 611 is greater than the diameter of the connecting bottom 61;

[0084] A connecting top 62 which is consistent with the shape and size of the bottom of the workpiece 8;

[0085] And a connecting middle part 63 which connects the cover plate 611 of the connecting bottom 61 and the connecting top 62.

[0086] In some more specific embodiments, as shown in Figure 8 and 9 , 10, the surface of the connecting top 62 is provided with threads, and the bottom of the workpiece 8 is provided with a second threaded hole 81 which is adapted to the connecting top 62.

[0087] In some more specific embodiments, the diameter of the cover plate 611 is greater than the diameter of the connecting middle part 63, the diameter of the cover plate 611 is greater than the diameter of the third through hole 531, and the cover plate 611 is placed below the third through hole 531 in use, which can effectively limit the workpiece connector 6 and prevent it from flying out due to excessive rotation force during rotation, effectively improving the fastening and further reducing the possibility of accidents.

[0088] In some more specific embodiments, as shown in Figure 11 and 12 In order to connect the rotating disc 2 with the driving mechanism, an annular base 25 is installed at the bottom of the rotating disc 2 and surrounds the first fixed support shaft 1.

[0089] The planetary gear clamp further comprises a connecting seat 7, which comprises a support shaft 71 detachably connected with the first fixed support shaft 1, and a driving rotating shaft 72 detachably connected with the base 25 and driving it to rotate, the driving rotating shaft 72 is sleeved outside the support shaft 71 and is rotationally connected with it. The support shaft 71 of the connecting seat 7 is inserted on the plasma spraying workbench, and the driving rotating shaft 72 is driven to rotate by an external driving mechanism.

[0090] In some more specific embodiments, the driving rotating shaft 72 is driven to rotate by an external driving mechanism, and the driving mechanism adopts conventional devices in the art, such as a driving motor.

[0091] In some more specific embodiments, as shown in Figure 4 and 13 In order to reduce the friction between the rotating disc 2 and the first fixed support shaft 1 and improve the transmission efficiency, the rotating disc 2 is connected with the first fixed support shaft 1 through a first rolling bearing 11, the first fixed support shaft 1 is connected with the inner ring of the first rolling bearing 11, and the rotating disc 2 is connected with the outer ring of the first rolling bearing 11. In the working process, the inner ring of the first rolling bearing 11 remains stationary, and the outer ring rotates.

[0092] In some more specific embodiments, as shown in Figure 4 and 13 The sun gear 31 is fixedly connected with an annular protrusion 311 at the connection with the first fixed support shaft 1, the protrusion 311 is of an integral structure with the sun gear 31, the outer wall of the protrusion 311 is connected with a second rolling bearing 12, the sun gear 31 is connected with the inner ring of the second rolling bearing 12, and the inner ring of the second rolling bearing 12 is stationary.

[0093] In some more specific embodiments, as shown in Figure 3 , 4As shown in Figs. 13 and 14, in order to better fix the sun gear 31 and the first fixed support shaft 1, the protrusion 311 of the sun gear 31 is provided with a pressing block 13 and a pin shaft 14 above the first fixed support shaft 1, the pressing block 13 covers the protrusion 311 and the first fixed support shaft 1, and the pin shaft 14 penetrates through the pressing block 14 and the first fixed support shaft 1.

[0094] In some more specific embodiments, as shown in Figs. 1 to 4, Figure 2 、 4 As shown in Figs. 13 and 14, in order to wrap the rotating disc 2 and prevent the entry of external dust or plasma sprayed powder, the rotating disc 2 further comprises a rotating disc shell 22 fixedly connected with the four peripheral edges of the rotating disc 2 and forming a cavity for accommodating the gear system 3.

[0095] In some more specific embodiments, as shown in Figs. 1 to 4, Figure 3 、 4 As shown in Figs. 13 and 14, in order to make the rotating disc shell 22 rotate with the rotating disc 2 while reducing friction, prolonging the service life and work efficiency of the machine, the bottom of the rotating disc shell 22 is provided with a groove 2221 connected with the outer ring of the second rolling bearing 12, and the outer ring of the second rolling bearing 12 rotates during the working process.

[0096] The surface of the rotating disc shell 22 is provided with a plurality of first through holes 222 distributed at equal intervals, which form a circle with the first fixed support shaft 1 as the center and are used for the workpiece accommodating rod 4 to pass through.

[0097] In some more specific embodiments, as shown in Figs. 1 to 4, Figure 3 、 4 As shown in Figs. 13 and 14, the workpiece accommodating rod 4 is externally connected with a third rolling bearing 23, and the outer ring of the third rolling bearing 23 is connected with a connecting piece 24 fixedly connected with the rotating disc shell 22.

[0098] In some more specific embodiments, as shown in Figs. 1 to 4, Figure 16 As shown in Fig. 15, when the workpiece 8 is clamped to the planetary gear clamp, spraying is performed by the plasma spray gun 9 arranged above one side of the planetary gear clamp, in order to better spray the workpiece 8, the plasma spray gun 9 is mounted on an ABB robot and can move up and down and left and right. When the workpiece 8 is long and only the upper part or the lower part of the workpiece 8 can be sprayed, the height or position of the plasma spray gun can be adjusted, and the workpiece 8 does not need to be disassembled and clamped multiple times during the spraying process, thereby improving production efficiency.

[0099] The above description of the embodiments is to facilitate the ordinary skilled in the art to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to these embodiments, and the general principles described herein are applied to other embodiments without the need for creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. A planetary gear fixture for plasma spraying, characterized by, The application discloses a planetary gear clamp for clamping a workpiece (8) to be sprayed. A first fixed support shaft (1); A rotating disc (2) rotatable around the first fixed support shaft (1) is provided with a plurality of second fixed support shafts (21) equidistantly arranged on the surface of the rotating disc (2), and all the second fixed support shafts (21) enclose a circle with the first fixed support shaft (1) as the center. A gear system (3) comprises a sun gear (31) fixedly connected with the first fixed support shaft (1), a plurality of planet gears (32) surrounding and meshing with the sun gear (31), and the planet gears (32) are rotatably arranged on the top of the second fixed support shaft (21). A workpiece containing rod (4) is fixedly arranged on the planet gear (32), and a cavity (41) for detachably arranging the workpiece (8) to be sprayed is formed on the top of the workpiece containing rod (4).

2. A planetary gear fixture for plasma spraying according to claim 1, wherein The workpiece (8) is fixedly connected with the workpiece containing rod (4) through a workpiece connecting piece (6), and the workpiece connecting piece (6) is arranged in the cavity (41) of the workpiece containing rod (4).

3. A planetary gear fixture for plasma spraying according to claim 1 or 2, characterized in that The planetary gear clamp further comprises a support protection piece (5) connected with the rotating disc (2) and used for supporting and protecting the workpiece containing rod (4), and the support protection piece (5) comprises: A protection cover (51) detachably fixedly connected with the rotating disc (2) is provided with a plurality of second through holes (511) equidistantly arranged on the surface of the protection cover (51), and the second through holes (511) enclose a circle with the first fixed support shaft (1) as the center and are used for allowing the workpiece containing rod (4) to pass through; A plurality of support columns (52) are fixedly arranged on the protection cover (51); And a partition plate (53) connected with the top end of the support column (52) and allowing the workpiece (8) and the workpiece containing rod (4) to be arranged in the upper and lower spaces, respectively, is provided with a plurality of third through holes (531) equidistantly arranged on the surface of the partition plate (53), and the third through holes (531) enclose a circle with the first fixed support shaft (1) as the center and are used for allowing the workpiece (8) or the workpiece connecting piece (6) to pass through.

4. A planetary gear fixture for plasma spraying according to claim 3, wherein A gap of 0.05-0.5 mm exists between the workpiece (8) or the workpiece connecting piece (6) and the third through hole (531).

5. A planetary gear fixture for plasma spraying as defined in claim 3 wherein, The workpiece connecting piece (6) comprises: A connecting bottom (61) matched with the cavity (41) is provided with a cover plate (611) covering the cavity (41) of the workpiece containing rod (4), and the diameter of the cover plate (611) is greater than that of the connecting bottom (61); A connecting top (62) matched with the shape and size of the bottom of the workpiece (8); And a connecting intermediate part (63) connecting the cover plate (611) of the connecting bottom (61) and the connecting top (62).

6. A planetary gear fixture for plasma spraying as defined in claim 1 wherein, An annular base (25) is arranged around the first fixed support shaft (1) and arranged on the bottom of the rotating disc (2). The planetary gear clamp further comprises a connecting seat (7) comprising a support shaft (71) detachably connected with the first fixed support shaft (1), and a driving rotating shaft (72) detachably connected with the base (25) and driving the rotation of the base (25), the driving rotating shaft (72) being sleeved outside the support shaft (71) and being rotationally connected with the support shaft (71).

7. A planetary gear fixture for plasma spraying as defined in claim 1 wherein, The rotating disc (2) is connected with the first fixed support shaft (1) through a first rolling bearing (11), the first fixed support shaft (1) is connected with an inner ring of the first rolling bearing (11), and the rotating disc (2) is connected with an outer ring of the first rolling bearing (11).

8. A planetary gear fixture for plasma spraying as defined in claim 1 wherein, The sun gear (31) is fixedly connected with an annular protrusion (311) at a connection position of the sun gear (31) and the first fixed support shaft (1), and a second rolling bearing (12) is connected with an outer wall of the protrusion (311).

9. A planetary gear fixture for plasma spraying according to claim 8, wherein The rotating disc (2) further comprises a rotating disc shell (22) fixedly connected with a peripheral edge of the rotating disc (2) and forming a cavity for accommodating the gear system (3); A bottom of the rotating disc shell (22) is provided with a groove (2221) connected with an outer ring of the second rolling bearing (12); A surface of the rotating disc shell (22) is provided with a plurality of equidistantly distributed first through holes (222), the first through holes (222) surrounding a circle with the first fixed support shaft (1) as a center and being passed through by the workpiece accommodating rod (4).

10. A planetary gear fixture for plasma spraying according to claim 9, wherein An outer portion of the workpiece accommodating rod (4) is connected with a third rolling bearing (23), an outer ring of the third rolling bearing (23) is connected with a connecting piece (24) fixedly connected with the rotating disc shell (22).

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