High-precision small-diameter centering tapered spline broach

Abstract

The utility model discloses a high-precision small-diameter centering involute spline broach which comprises a fixed installation main rod, a fixed sleeve fixedly sleeved on the middle section of the outer side of the fixed installation main rod, a limiting clamping strip fixedly connected with one end of the outer side of the fixed sleeve, an involute spline sleeve sleeved on the outer side of the fixed sleeve, and a limiting clamping groove arranged on the inner side of the involute spline sleeve. The outer side of the fixed mounting main rod is movably sleeved with a positioning ring, the other side of the positioning ring is fixedly connected with a clamping groove lantern ring, the outer side of the clamping groove lantern ring is sleeved with a clamping strip lantern ring in a clamped mode, one end of the clamping strip lantern ring is fixedly connected with a connecting screw cylinder, and one end of the outer side of the fixed mounting main rod is provided with a connecting thread; the involute spline sleeve is arranged on the outer side of the fixed sleeve in a limiting and sleeving mode through the limiting clamping strip and the limiting clamping groove structure, and the involute spline sleeve covered with the spline tooth and circular tooth alternating structure can be conveniently replaced through the split type sleeving structure. Compared with an integral structure, the use and maintenance cost can be reduced by independently replacing the spline sleeve structure which is most prone to damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to broach equipment technical field, concretely is a kind of high-precision small-diameter centering involute spline broach. BACKGROUND

[0002] High-precision small-diameter centering involute spline broach is a kind of specially designed tool, for processing high-precision involute spline, this kind of broach is usually used in mechanical manufacturing field, especially in the occasion needing high precision and high efficiency, its most core operation is broaching, and broaching is a kind of efficient, high-precision processing method, and it is especially suitable for the processing of complex shapes such as spline, gear, keyway.

[0003] The existing Chinese patent document CN216758395U discloses an involute spline broach, which comprises a fixed rod, a connecting rod connected to the end of the fixed rod, an involute spline rod connected to the end of the connecting rod, a connecting block connected to the end of the involute spline rod, a mounting seat connected to the end of the connecting block, a buffer block detachably connected to the end of the mounting seat, a hole head slidingly connected to the end of the buffer block, and a sliding rod fixedly connected to the inside of the buffer block. When the hole head is extruded, the connecting rod slides on the sliding rod, extrudes the No. 2 spring, and makes the No. 2 spring contract to generate elastic force, buffers the hard impact received by the hole head during the hole alignment process, and improves the hole alignment efficiency of the hole head and the spline hole of the processed workpiece. But the involute spline broach still has the following problems: the involute spline rod with spline teeth and round teeth alternating structure on the outer side is fixedly connected to the fixed rod, and cannot be disassembled and replaced.

[0004] The utility model aims at: in order to solve the above-mentioned involute spline broach, the involute spline rod with spline teeth and round teeth alternating structure on the outer side is fixedly connected to the fixed rod, and cannot be disassembled and replaced, and in actual use process, the spline teeth and round teeth alternating structure arranged on the outer side of the involute spline rod are the most easily worn parts, and the operation and use mode of overall replacement may increase the cost of use and maintenance.

[0005] To achieve the above object, the utility model provides the following technical scheme: A high accuracy small diameter centering involute spline broach, include: Fixed installation main rod, fixed installation main rod outside middle section fixedly equipped with fixed sleeve, one end fixedly connected with limit card strip outside fixed sleeve, fixed sleeve outside sets up involute spline sleeve, the limit card groove is set up to the inside of involute spline sleeve, the limit card strip one end is equipped with the positioning hole, the movable sleeve of fixed installation main rod outside sets up the positioning ring, one side of positioning ring is fixedly connected with the positioning column, the other side of positioning ring is fixedly connected with the card slot sleeve ring, the card slot sleeve ring outside is connected with the card strip sleeve ring, one end of card strip sleeve ring is fixedly connected with the connecting screw cylinder, one end of fixed installation main rod outside sets up the connecting thread.

[0006] As a further scheme of the utility model: The number of limit card strips is set to several groups, which are symmetrically arranged outside the fixed sleeve; the number of limit card slots is set to several groups, which are symmetrically arranged inside the involute spline sleeve; the number of limit card strips and the number of limit card slots are adapted to each other.

[0007] As a further scheme of the utility model: The limit card strips of the several groups are all provided with positioning hole structures at the same end; the number of positioning columns and the number of positioning holes are adapted to each other, and the positioning columns are symmetrically arranged at one side of the positioning ring; one end of the fixed sleeve is fixedly connected with a limit ring structure which is adapted to the positioning ring; the involute spline sleeve is clamped between the limit ring structure and the positioning ring.

[0008] As a further scheme of the utility model: The positioning ring is limitedly connected with the connecting screw cylinder through the card slot sleeve ring and the card strip sleeve ring which are adapted to each other and are connected with each other; the connecting screw cylinder is screwed to one end of the fixed installation main rod outside through the connecting thread.

[0009] As a further scheme of the utility model: One end of the fixed installation main rod is provided with a threaded groove; a threaded column is screwed in the threaded groove; a hexagonal handle block is fixedly connected to the other end of the threaded column; a rotating circular groove is formed in one side of the hexagonal handle block; a hole head is rotatably connected to one end of the hexagonal handle block; and a rotating circular block is fixedly connected to one end of the hole head.

[0010] As a further scheme of the utility model: The number of rotating circular blocks and the number of rotating circular grooves are adapted to each other; the hexagonal handle block and the hole head are rotatably connected to each other through the rotating circular block and the rotating circular groove structure.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. The involute spline sleeve is sleeved outside the fixed sleeve through the limiting clamping strip and limiting clamping groove structure, the split type sleeve structure can conveniently replace the involute spline sleeve covered with spline teeth and round tooth alternating structure, compared with the integral type structure, the tooth structure which is most easily damaged can be replaced alone to reduce the use and maintenance cost, the positioning ring and the limiting ring structure are symmetrically arranged and clamped between the two to limit the horizontal movement of the involute spline sleeve, and the limiting clamping strip and the limiting clamping groove structure limit the rotation thereof;

[0013] 2. The hole aligning head for clamping into the external broaching driving device is rotatably connected to one end of the hexagonal handle block through the rotating circular block and the rotating circular groove, the rotatable hole aligning head structure can provide a certain rotation range, avoids damage caused by force deviation of the fixed installation main rod when the hole aligning head is abutted and clamped with the external broaching driving device due to unbalanced torque, and the hexagonal handle block is screw-connected to one end of the fixed installation main rod through the threaded groove and threaded column structure, so that the involute spline sleeve can be conveniently sleeved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the overall structure schematic view of the high-precision small-diameter centering involute spline broach.

[0015] Figure 2 is the structure schematic view of the involute spline sleeve in the high-precision small-diameter centering involute spline broach.

[0016] Figure 3 is the structure schematic view of the connecting screw cylinder in the high-precision small-diameter centering involute spline broach.

[0017] Figure 4 is the structure schematic view of the hole aligning head in the high-precision small-diameter centering involute spline broach.

[0018] In the drawing: 1, fixed installation main rod; 2, fixed sleeve; 3, limiting clamping strip; 4, involute spline sleeve; 5, limiting clamping groove; 6, positioning hole; 7, positioning ring; 8, positioning column; 9, clamping groove sleeve ring; 10, clamping strip sleeve ring; 11, connecting screw cylinder; 12, connecting thread; 13, threaded groove; 14, threaded column; 15, hexagonal handle block; 16, rotating circular groove; 17, hole aligning head; 18, rotating circular block. DETAILED DESCRIPTION

[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] In the description of the utility model, it should be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0021] With reference to Figures 1 to 3 In the embodiments of the utility model, a high-precision small-diameter centering involute spline broach comprises: a fixed installation main rod 1, a fixed sleeve 2 is fixedly arranged on the outer side of the middle section of the fixed installation main rod 1, a limiting clamping strip 3 is fixedly connected to one end of the outer side of the fixed sleeve 2, an involute spline sleeve 4 is arranged on the outer side of the fixed sleeve 2, a limiting clamping groove 5 is formed in the inner side of the involute spline sleeve 4, a positioning hole 6 is formed in one end of the limiting clamping strip 3, a positioning ring 7 is movably arranged on the outer side of the fixed installation main rod 1, a positioning column 8 is fixedly connected to one side of the positioning ring 7, a clamping groove sleeve ring 9 is fixedly connected to the other side of the positioning ring 7, a clamping strip sleeve ring 10 is clamped and arranged on the outer side of the clamping groove sleeve ring 9, a connecting screw cylinder 11 is fixedly connected to one end of the clamping strip sleeve ring 10, and a connecting thread 12 is arranged on one end of the outer side of the fixed installation main rod 1.

[0022] With reference to Figure 2 The number of limiting clamping strips 3 is arranged in several groups, which are symmetrically arranged on the outer side of the fixed sleeve 2, the number of limiting clamping grooves 5 is arranged in several groups, which are symmetrically arranged on the inner side of the involute spline sleeve 4, and the number of limiting clamping strips 3 and limiting clamping grooves 5 is matched.

[0023] Adopt the above scheme: involute spline sleeve 4 is limited to set outside the fixed sleeve 2 through the limiting card strip 3 and the limiting card slot 5 structure, this kind of split type set structure can conveniently replace the involute spline sleeve 4 covered with spline tooth, denticulate alternate structure, relative to the integral type structure, can reduce the use and maintenance cost by replacing the tooth cutting structure which is most easily damaged, to a certain extent, reduce the downtime and maintenance time.

[0024] Refer to Figure 2 A plurality of limiting card strips 3 are provided with positioning holes 6 structure at the same end, the positioning column 8 is matched with the positioning hole 6 in number and specification, and is symmetrically arranged on one side of the positioning ring 7, one end of the fixed sleeve 2 is fixedly connected with a limiting ring structure matched with the specification of the positioning ring 7, and the involute spline sleeve 4 is clamped between the two by cooperating with the positioning ring 7.

[0025] Adopt the above scheme: involute spline sleeve 4 is limited to set outside the fixed sleeve 2 through the limiting card strip 3 and the limiting card slot 5 structure, this kind of split type set structure can conveniently replace the involute spline sleeve 4 covered with spline tooth, denticulate alternate structure, relative to the integral type structure, can reduce the use and maintenance cost by replacing the tooth cutting structure which is most easily damaged, to a certain extent, reduce the downtime and maintenance time.

[0026] Refer to Figure 3 The positioning ring 7 is limited to rotate by the groove sleeve ring 9 and the card sleeve ring 10 structure matched in specification and sleeved with each other and connected with the connecting screw cylinder 11, and the connecting screw cylinder 11 is screwed on one end outside the fixed installation main rod 1 through the connecting thread 12.

[0027] Adopt the above scheme: the connecting screw cylinder 11 drives the positioning ring 7 and its connecting structure to be screwed and abutted on one end of the involute spline sleeve 4 through the connecting thread 12, the positioning ring 7 and the connecting screw cylinder 11 are limited to rotate by the groove sleeve ring 9 and the card sleeve ring 10 structure matched in specification and sleeved with each other, so that the positioning ring 7 does not rotate, and the positioning column 8 is inserted into the corresponding positioning hole 6, and the detachable clamping structure facilitates the sleeving and dismounting operation of the involute spline sleeve 4.

[0028] Refer to Figure 4 One end of the fixed installation main rod 1 is provided with a threaded groove 13, a threaded column 14 is screwed in the threaded groove 13, a hexagonal handle block 15 is fixedly connected to the other end of the threaded column 14, a rotating circular groove 16 is formed in one side of the hexagonal handle block 15, a counter bore head 17 is rotatably connected to one end of the hexagonal handle block 15, a rotating circular block 18 is fixedly connected to one end of the counter bore head 17, the rotating circular block 18 is matched with the rotating circular groove 16 in number and specification, and the hexagonal handle block 15 and the counter bore head 17 are rotatably connected to each other through the rotating circular block 18 and the rotating circular groove 16 structure.

[0029] Adopting the above scheme: the hole aligning head 17 for clamping into the external broaching driving device is rotatably connected to one end of the hexagonal handle block 15 through the rotating circular block 18 and the rotating circular groove 16, the rotatable hole aligning head 17 structure is convenient to provide a certain rotation range, avoids that the fixed installation main rod 1 is offset to generate damage due to torque imbalance when the hole aligning head 17 is clamped and abutted with the external broaching driving device, and the hexagonal handle block 15 is screw-connected to one end of the fixed installation main rod 1 through the threaded groove 13 and the threaded column 14 structure, so that the involute spline sleeve 4 can be conveniently and quickly disassembled and sleeved.

[0030] The working principle of the utility model is: in use, the involute spline sleeve 4 is limitingly sleeved outside the fixed sleeve 2 through the limiting clamping strip 3 and the limiting clamping groove 5 structure, the split type sleeving structure can conveniently replace the involute spline sleeve 4 covered with a tooth, compared with the integral type structure, the tooth structure which is most easily damaged can be replaced alone to reduce the use and maintenance cost, the positioning ring 7 and the limiting ring structure are clamped between the two to limit the horizontal movement of the involute spline sleeve 4, the limiting clamping strip 3 and the limiting clamping groove 5 structure limit the rotation of the involute spline sleeve 4, the stability of the involute spline sleeve 4 in the broaching process is ensured, the connecting screw cylinder 11 drives the positioning ring 7 and the connecting structure to be screw-connected and abutted at one end of the involute spline sleeve 4, the detachable clamping structure at one end is convenient for the sleeving and disassembling operation of the involute spline sleeve 4, the hole aligning head 17 for clamping into the external broaching driving device is rotatably connected to one end of the hexagonal handle block 15 through the rotating circular block 18 and the rotating circular groove 16, the rotatable hole aligning head 17 structure is convenient to provide a certain rotation range, avoids that the fixed installation main rod 1 is offset to generate damage due to torque imbalance when the hole aligning head 17 is clamped and abutted with the external broaching driving device, and the hexagonal handle block 15 is screw-connected to one end of the fixed installation main rod 1 through the threaded groove 13 and the threaded column 14 structure, so that the involute spline sleeve 4 can be conveniently and quickly disassembled and sleeved.

[0031] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A high-precision small-diameter centering involute spline broach, characterized by, Include: The fixed installation main rod (1) is fixedly sleeved with a fixed sleeve (2) in the middle of the outer side, one end of the fixed sleeve (2) is fixedly connected with a limiting clamping strip (3), a involute spline sleeve (4) is sleeved outside the fixed sleeve (2), a limiting clamping groove (5) is formed in the inner side of the involute spline sleeve (4), a positioning hole (6) is formed in one end of the limiting clamping strip (3), a positioning ring (7) is movably sleeved outside the fixed installation main rod (1), a positioning column (8) is fixedly connected to one side of the positioning ring (7), a clamping groove sleeve ring (9) is fixedly connected to the other side of the positioning ring (7), a clamping strip sleeve ring (10) is sleeved and clamped outside the clamping groove sleeve ring (9), a connecting screw cylinder (11) is fixedly connected to one end of the clamping strip sleeve ring (10), a connecting thread (12) is arranged at one end of the fixed installation main rod (1).

2. The high-precision small-diameter centering involute spline broach according to claim 1, characterized in that, A plurality of limiting clamping strips (3) are provided, which are symmetrically arranged outside the fixed sleeve (2), a plurality of limiting clamping grooves (5) are provided, which are symmetrically arranged inside the involute spline sleeve (4), the number of the limiting clamping strips (3) and the limiting clamping grooves (5) are matched in size.

3. The high-precision small-diameter centering involute spline broach according to claim 1, characterized in that, A plurality of limiting clamping strips (3) are provided, which are symmetrically arranged outside the fixed sleeve (2), a plurality of limiting clamping grooves (5) are provided, which are symmetrically arranged inside the involute spline sleeve (4), the number of the limiting clamping strips (3) and the limiting clamping grooves (5) are matched in size.

4. The high-precision small-diameter centering involute spline broach according to claim 1, characterized in that, The positioning ring (7) is limitedly connected with the connecting screw cylinder (11) through the clamping groove sleeve ring (9) and the clamping strip sleeve ring (10) which are matched in size and sleeved and clamped with each other, the connecting screw cylinder (11) is screwed to one end of the fixed installation main rod (1) through the connecting thread (12).

5. The high-precision small-diameter centering involute spline broach according to claim 1, characterized in that, One end of the fixed installation main rod (1) is provided with a threaded groove (13), a threaded column (14) is screwed in the threaded groove (13), a hexagonal handle block (15) is fixedly connected to the other end of the threaded column (14), a rotating circular groove (16) is formed in one side of the hexagonal handle block (15), a counterbore head (17) is rotatably connected to one end of the hexagonal handle block (15), a rotating circular block (18) is fixedly connected to one end of the counterbore head (17).

6. A high-precision small-diameter centering involute spline broach according to claim 5, characterized in that, The rotating circular block (18) and the rotating circular groove (16) are matched in size, the hexagonal handle block (15) and the counterbore head (17) are rotatably connected through the rotating circular block (18) and the rotating circular groove (16).

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