Pickling clamp for planetary bearing raceway

Abstract

The pickling clamp comprises a pickling sleeve, a gland, a pressing plate, a pull rod and a workpiece, the lower end of the pickling sleeve is closed, the upper end of the pickling sleeve is open, a pickling sleeve boss is arranged on the bottom face of the pickling sleeve, a plurality of pickling sleeve through holes are evenly distributed in the bottom face of the pickling sleeve, and a pickling sleeve center hole is formed in the center of the bottom face of the pickling sleeve. A cylindrical pin hole is formed in the bottom surface of the pickling sleeve; the outer diameter of the gland is not larger than the diameter of the inner wall of the pickling sleeve, a gland boss is arranged on the lower end face of the gland, and a gland center hole is formed in the center of the gland. The pressing plate is installed on the upper end face of the gland through bolts. A workpiece is mounted between the bottom surface of the pickling sleeve and the gland; the pull rod penetrates through the pickling sleeve; the pickling protection clamp provided by the utility model is simple in structure, low in manufacturing difficulty and convenient to use and operate; three sealing grooves are formed in the clamp, sealing rings are arranged in the sealing grooves, pickling liquid can be prevented from making contact with the gear face of the workpiece, and the gear face is effectively protected against pickling.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts pickling, and in particular relates to a pickling fixture for a planetary bearing raceway. Background Art

[0002] The outer diameter of the outer ring of the planetary gear workpiece has a gear. During the production process, the raceway needs to be pickled, but other parts, especially the gears, cannot be pickled. The existing pickling device cannot meet the requirements of pickling the inner ring of this type of gear workpiece. In order to solve this problem, it is urgent to design a set of planetary bearing raceway pickling protection fixtures to prevent the pickling liquid from contacting the gears. Utility Model Content

[0003] In view of the problems existing in the background technology, the utility model provides a pickling fixture for planetary bearing raceways. The utility model is provided with three sealing grooves with sealing rings therein, which can prevent the pickling liquid from contacting the gear surface of the workpiece, and effectively protect the gear surface from being pickled.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a pickling fixture for a planetary bearing raceway, comprising a pickling sleeve, a pressure cover, a pressure plate, a pull rod and a workpiece, wherein the pickling sleeve is a round tube, the lower end of the pickling sleeve is closed and the upper end is open, a pickling sleeve boss is arranged on the bottom surface of the pickling sleeve, a plurality of pickling sleeve through holes are evenly distributed on the bottom surface of the pickling sleeve, a pickling sleeve center hole is arranged at the center of the bottom surface of the pickling sleeve, and a cylindrical pin hole is arranged on the bottom surface of the pickling sleeve;

[0005] The gland is a circular plate, the outer diameter of the gland is not greater than the inner diameter of the pickling sleeve of the pickling sleeve, a gland boss is provided on the lower end surface of the gland, a plurality of gland through holes are provided on the upper end surface of the gland, and a gland center hole is provided in the center of the gland; the pressing plate is a circular ring, the pressing plate is mounted on the upper end surface of the gland by bolts, and the outer diameter of the gland is equal to and coaxial with the outer diameter of the pressing plate;

[0006] The workpiece is installed between the bottom surface of the pickling sleeve and the pressure cover, the lower end of the workpiece is clamped on the pickling sleeve boss, and the upper end of the workpiece is clamped on the pressure cover boss; the pull rod penetrates from the lower end of the pickling sleeve and penetrates from the upper end of the pressure cover, and a nut is provided at the passing end of the pull rod.

[0007] A first sealing groove is provided at the junction of the pickling sleeve boss and the bottom surface of the pickling sleeve; a second sealing groove is provided at the junction of the outer diameter of the gland and the outer diameter of the pressure plate; a third sealing groove is provided at the junction of the gland boss and the lower end surface of the gland; and sealing rings are provided in the first sealing groove, the second sealing groove and the third sealing groove.

[0008] The pickling sleeve inner wall diameter of the pickling sleeve is not less than the gear outer diameter of the workpiece.

[0009] The pickling sleeve boss is coaxial with the inner wall of the pickling sleeve, and the outer diameter of the pickling sleeve boss is not greater than the diameter of the raceway of the workpiece.

[0010] The gland boss is coaxial with the outer diameter of the gland, and the outer diameter of the gland boss is not greater than the raceway diameter of the workpiece.

[0011] A washer is arranged between the nut and the gland.

[0012] The pull rod comprises a first rod segment, a second rod segment and a third rod segment; the diameter of the first rod segment is larger than that of the second rod segment, and the diameter of the second rod segment is larger than that of the third rod segment; the diameter of the first rod segment is larger than the diameter of the center hole of the pickling sleeve, and a groove is provided at the edge of the first rod segment, which is matched with the cylindrical pin hole; the upper end of the second rod segment is provided with a thread; and the third rod segment is provided with a radial slot hole.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a pickling fixture for a planetary bearing raceway. The pickling protection fixture provided by the utility model has a simple structure, low manufacturing difficulty, and convenient operation. The fixture is provided with three sealing grooves with sealing rings therein, which can prevent the pickling liquid from contacting the gear surface of the workpiece, effectively protecting the gear surface from being pickled. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a schematic diagram of the pickling sleeve structure;

[0017] Figure 4 It is a schematic diagram of the structure of the gland and pressure plate assembly;

[0018] Figure 5 It is a schematic diagram of the pull rod;

[0019] Figure 6 Schematic diagram of the workpiece.

[0020] In the figure: 1, pickling sleeve, 11, pickling sleeve boss, 12, pickling sleeve inner wall, 13, pickling sleeve through hole, 14, first sealing groove, 15, cylindrical pin hole, 16, pickling sleeve center hole, 2, gland, 21, gland outer diameter, 22, gland through hole, 23, gland center hole, 24, second sealing groove, 25, third sealing groove, 26, gland boss, 3, pressure plate, 31, pressure plate outer diameter, 4, gasket, 5, nut, 6, pull rod, 61, first rod segment, 611, groove, 62, second rod segment, 621, thread, 63, third rod segment, 631, slot, 7, sealing ring, 8, workpiece, 81, gear, 82, raceway, 9, cylindrical pin. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] The following is combined with Figure 1-6 The specific implementation of the utility model is further elaborated in detail: a pickling fixture for a planetary bearing raceway, comprising a pickling sleeve 1, a pressure cover 2, a pressure plate 3, a pull rod 6 and a workpiece 8, wherein the pickling sleeve 1 is a round tube, the lower end of the pickling sleeve 1 is closed and the upper end is open, a pickling sleeve boss 11 is provided on the bottom surface of the pickling sleeve 1, and a first sealing groove 14 is provided at the junction of the pickling sleeve boss 11 and the bottom surface of the pickling sleeve 1; a plurality of pickling sleeve through holes 13 are evenly distributed on the bottom surface of the pickling sleeve 1, a pickling sleeve center hole 16 is provided at the center of the bottom surface of the pickling sleeve 1, and a cylindrical pin hole 15 is provided on the bottom surface of the pickling sleeve 1;

[0023] The gland 2 is a circular plate, the gland outer diameter 21 of the gland 2 is not larger than the diameter of the pickling sleeve inner wall 12 of the pickling sleeve 1, a gland boss 26 is provided on the lower end surface of the gland 2, and a third sealing groove 25 is provided at the junction of the gland boss 26 and the lower end surface of the gland 2; a plurality of gland through holes 22 are provided on the upper end surface of the gland 2, and a gland center hole 23 is provided at the center of the gland 2; the pressing plate 3 is a circular ring, the pressing plate 3 is mounted on the upper end surface of the gland 2 by bolts, and a second sealing groove 24 is provided at the junction of the gland outer diameter 21 and the pressing plate outer diameter 31; the gland outer diameter 21 of the gland 2 is equal to and coaxial with the pressing plate outer diameter 31 of the pressing plate 3. For the convenience of installation, in actual use, a boss can be provided on the upper end surface of the gland 2, and the outer diameter of the boss is adapted to the center hole of the pressing plate 3; the first sealing groove 14, the second sealing groove 24 and the third sealing groove 25 are provided with sealing rings 7;

[0024] The diameter of the pickling sleeve inner wall 12 of the pickling sleeve 1 is not less than the outer diameter of the gear 81 of the workpiece 8; the pickling sleeve boss 11 is coaxial with the pickling sleeve inner wall 12, and the outer diameter of the pickling sleeve boss 11 is not greater than the diameter of the raceway 82 of the workpiece 8; the gland boss 26 is coaxial with the gland outer diameter 21, and the outer diameter of the gland boss 26 is not greater than the diameter of the raceway 82 of the workpiece 8; when the workpiece 8 is placed in the pickling sleeve 1, the upper end face of the workpiece 8 contacts the lower end face of the gland 2, and the lower end face of the workpiece 8 contacts the bottom face of the pickling sleeve 1; in order to facilitate placement, the gear 81 of the workpiece 8 is clearance-fitted with the pickling sleeve inner wall 12, and the raceway 82 of the workpiece 8 is clearance-fitted with the pickling sleeve boss 11 and the gland boss 26;

[0025] The workpiece 8 is installed between the bottom surface of the pickling sleeve 1 and the gland 2, the lower end of the workpiece 8 is clamped on the pickling sleeve boss 11, and the upper end of the workpiece 8 is clamped on the gland boss 26; in actual use, the lower end of the raceway 82 of the workpiece 8 and the corner of the bottom surface of the workpiece 8 are in contact with the sealing ring 7 at the first sealing groove 14 and sealed; the upper end surface of the raceway 82 of the workpiece 8 and the corner of the upper end surface of the workpiece 8 are in contact with the sealing ring 7 at the third sealing groove 25 and sealed; the sealing ring 7 at the first sealing groove 14, the second sealing groove 24 and the third sealing groove 25 can effectively prevent the acid from flowing into the upper end surface, the lower end surface and the raceway 82 of the workpiece 8 during the pickling process;

[0026] The pull rod 6 comprises a first rod segment 61, a second rod segment 62 and a third rod segment 63; the diameter of the first rod segment 61 is larger than that of the second rod segment 62, and the diameter of the second rod segment 62 is larger than that of the third rod segment 63; a groove 611 is provided at the edge of the first rod segment 61, and the groove 611 is adapted to the cylindrical pin hole 15; a thread 621 is provided at the upper end of the second rod segment 62; the third rod segment 63 is provided with a radial slot 631; the pull rod 6 penetrates from the lower end of the pickling sleeve 1 and passes out from the upper end of the gland 2, and a nut 5 is provided at the passing end of the pull rod 6; a washer 4 is provided between the nut 5 and the gland 2, and the nut 5 is used to press the gland 2 to prevent it from loosening;

[0027] The use process of the utility model is as follows: first, the pull rod 6 is inserted from the center hole 16 of the pickling sleeve at the lower end of the pickling sleeve 1, and the cylindrical pin 9 is passed through the cylindrical pin hole 15 and the groove 611 of the pull rod 6 and fixed to prevent the pull rod 6 and the pickling sleeve 1 from rotating relative to each other; the sealing ring 7 is installed in the first sealing groove 14; then the workpiece 8 is installed in the pickling sleeve 1; the pressure cover 2 and the pressure plate 3 are installed together with bolts, and the sealing ring 7 is installed in the second sealing groove 24 and the third sealing groove 25; the pressure cover 2 and the pressure plate 3 are closed. The parts are installed on the upper end surface of the workpiece 8; the upper end of the gland 2 is fixed with a washer 4 and a nut 5 to ensure that the various parts are in firm contact; after the installation is completed, the device is lifted from the slot 631 using a hanger and placed in the pickling tank, and the pickling solution flows in from the pickling sleeve through hole 13 and the gland through hole 22; after the pickling is completed, the device is lifted and placed on the placement rack, and after the pickling solution has completely flowed out, the device is disassembled, the workpiece 8 that has been pickled is removed, and the parts of the device are placed together, waiting for reuse.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0029] The parts not described in detail in this utility model are prior art.

Claims

1. A pickling fixture for a planetary bearing raceway, comprising a pickling sleeve (1), a gland (2), a pressure plate (3), a tie rod (6) and a workpiece (8), wherein: The pickling sleeve (1) is a round tube, the lower end of the pickling sleeve (1) is closed and the upper end is open, the bottom surface of the pickling sleeve (1) is provided with a pickling sleeve boss (11), a plurality of pickling sleeve through holes (13) are evenly distributed on the bottom surface of the pickling sleeve (1), a pickling sleeve center hole (16) is provided at the center of the bottom surface of the pickling sleeve (1), and a cylindrical pin hole (15) is provided on the bottom surface of the pickling sleeve (1); The gland (2) is a circular plate, the gland outer diameter (21) of the gland (2) is not greater than the diameter of the pickling sleeve inner wall (12) of the pickling sleeve (1), a gland boss (26) is provided on the lower end surface of the gland (2), a plurality of gland through holes (22) are provided on the upper end surface of the gland (2), and a gland center hole (23) is provided at the center of the gland (2); the pressure plate (3) is a circular ring, the pressure plate (3) is mounted on the upper end surface of the gland (2) by bolts, the gland outer diameter (21) of the gland (2) is equal to and coaxial with the pressure plate outer diameter (31) of the pressure plate (3); The workpiece (8) is installed between the bottom surface of the pickling sleeve (1) and the pressure cover (2), the lower end of the workpiece (8) is clamped on the pickling sleeve boss (11), and the upper end of the workpiece (8) is clamped on the pressure cover boss (26); the pull rod (6) passes through the lower end of the pickling sleeve (1) and passes through the upper end of the pressure cover (2), and a nut (5) is provided at the passing end of the pull rod (6).

2. A pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: A first sealing groove (14) is provided at the junction of the pickling sleeve boss (11) and the bottom surface of the pickling sleeve (1); a second sealing groove (24) is provided at the junction of the outer diameter of the gland (21) and the outer diameter of the pressure plate (31); a third sealing groove (25) is provided at the junction of the gland boss (26) and the lower end surface of the gland (2); and sealing rings (7) are provided in the first sealing groove (14), the second sealing groove (24) and the third sealing groove (25).

3. A pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: The diameter of the pickling sleeve inner wall (12) of the pickling sleeve (1) is not less than the outer diameter of the gear (81) of the workpiece (8).

4. A pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: The pickling sleeve boss (11) is coaxial with the pickling sleeve inner wall (12), and the outer diameter of the pickling sleeve boss (11) is not greater than the diameter of the raceway (82) of the workpiece (8).

5. The pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: The gland boss (26) is coaxial with the gland outer diameter (21), and the outer diameter of the gland boss (26) is not greater than the diameter of the raceway (82) of the workpiece (8).

6. A pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: A washer (4) is provided between the nut (5) and the gland (2).

7. A pickling fixture for a planetary bearing raceway according to claim 1, characterized in that: The pull rod (6) comprises a first rod segment (61), a second rod segment (62) and a third rod segment (63); the diameter of the first rod segment (61) is larger than that of the second rod segment (62), and the diameter of the second rod segment (62) is larger than that of the third rod segment (63); the diameter of the first rod segment (61) is larger than the diameter of the center hole (16) of the pickling sleeve, and a groove (611) is provided at the edge of the first rod segment (61), and the groove (611) is matched with the cylindrical pin hole (15); the upper end of the second rod segment (62) is provided with a thread (621); and the third rod segment (63) is provided with a radial slot hole (631).

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