High-precision floatable gear shaft straightening and clamping mechanism

Abstract

The high-precision floatable gear shaft straightening and clamping mechanism comprises a base, a left center seat and a right center seat are arranged at the two ends of the base in the length direction in a sliding mode respectively, and a left center and a right center which are used for clamping a gear shaft are arranged on the left center seat and the right center seat respectively. The left tip and the right tip are coaxially arranged and can both ascend and descend in the vertical direction; a supporting mechanism mounting plate is further arranged on the upper surface of the base between the left center seat and the right center seat, a plurality of supporting mechanisms are arranged on the supporting mechanism mounting plate in the length direction of the base, and the supporting mechanisms can slide in the width direction of the base; and a pressing head capable of pressing the gear shaft against the supporting mechanism is also arranged above the base. The multiple movable supporting mechanisms are arranged, flexible supporting of different positions of to-be-straightened gear shafts with different lengths can be achieved, the probability of deflection between the left tip and the right tip in the straightening process is effectively reduced, and then the straightening precision is prevented from being reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical devices, and particularly relates to a high-precision floating gear shaft straightening clamping mechanism. Background Art

[0002] In the manufacturing process of a transmission, the straightening process of a gear shaft is a key process related to the product performance. For a long time, domestic straightening machine manufacturers have adopted a processing method of positioning and detecting at both ends, and straightening the gear shaft after releasing the positioning. This processing method has the following technical defects: it may cause the detection accuracy of the parts after re-clamping to change; it impacts the top mechanism during the continuous clamping of the gear shaft, resulting in the loss of the accuracy of the top mechanism; continuously clamping and releasing the parts during the straightening process leads to low processing efficiency and urgently needs improvement. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a high-precision floating gear shaft straightening clamping mechanism to solve the technical problems of low positioning accuracy and low processing efficiency caused by frequent clamping and positioning in the existing gear shaft straightening process.

[0004] To solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0005] A high-precision floating gear shaft straightening clamping mechanism includes a base. On both ends of the base along the length direction, a left top seat and a right top seat are respectively slidably arranged. On the left top seat and the right top seat, a left top and a right top for clamping the gear shaft are respectively arranged. The left top and the right top are coaxially arranged and can both lift vertically.

[0006] On the upper surface of the base between the left top seat and the right top seat, a support mechanism mounting plate is further arranged. Along the length direction of the base, a plurality of support mechanisms are arranged on the support mechanism mounting plate. The plurality of support mechanisms can slide along the width direction of the base.

[0007] Above the base, a pressure head is further arranged which can press the gear shaft against the support mechanism.

[0008] The present invention further has the following technical features:

[0009] Specifically, on the base, a left slide rail and a right slide rail are further arranged. The left slide rail and the right slide rail are symmetrically arranged on both sides of the support mechanism mounting plate. The left slide rail is slidably connected with the left top seat, and the right slide rail is slidably connected with the right top seat.

[0010] Furthermore, the left top seat and the right top seat have the same structure and are arranged in mirror symmetry. The left top seat includes a top seat body, and the top seat body includes a first installation section and a second installation section which are integrally connected and arranged.

[0011] A rotating pin penetrates through the second installation section, and a swing arm is sleeved on the rotating pin. The left center point 4 penetrates through the swing arm.

[0012] An elastic support seat penetrates through the first installation section, and the elastic support seat can be connected to the swing arm.

[0013] Furthermore, the left center point and the right center point have the same structure.

[0014] The left center point includes a left center point sleeve and a retaining ring which are connected. A left center point body penetrates through the left center point sleeve, and both ends of the left center point body penetrate out of the left center point sleeve and the retaining ring respectively.

[0015] The left center point body includes a conical section, a first cylindrical section, a second cylindrical section and a third cylindrical section which are sequentially connected. A right needle roller bearing is sleeved on the first cylindrical section, and an intermediate bearing is sleeved on the second cylindrical section. A left needle roller bearing is sleeved at the rear end of the third cylindrical section.

[0016] Furthermore, an inner cavity is arranged in the left center point sleeve. The inner cavity includes a first installation cavity, a second installation cavity, a third installation cavity and a fourth installation cavity which are sequentially communicated. A first limiting step is formed at the connection of the first installation cavity and the second installation cavity; a second limiting step is formed at the connection of the second installation cavity and the third installation cavity; a third limiting step is formed at the connection of the third installation cavity and the fourth installation cavity.

[0017] The first limiting step can abut against the rear end face of the conical section; the second limiting step can axially limit the right needle roller bearing, and the third limiting step can axially limit the intermediate bearing.

[0018] Furthermore, the support mechanism includes a telescopic cylinder installed on the upper surface of the support mechanism mounting plate. The output end of the telescopic cylinder is connected to the rear end of a connecting plate, and the front end of the connecting plate is connected to a support block vertically arranged on the upper surface of the support mechanism mounting plate.

[0019] A transfer seat is arranged at the top end of the support block. A left baffle and a right baffle are respectively vertically arranged on the left and right sides of the transfer seat. An installation space is enclosed among the top surface of the transfer seat, the inner wall of the left baffle and the inner wall of the right baffle. A floating seat is arranged in the installation space, and a support seat is arranged on the floating seat. The top surface of the support seat is concaved to form a curved surface.

[0020] Furthermore, arc-shaped grooves are respectively and penetratingly opened on the left baffle and the right baffle. Slide rods are respectively arranged on the left and right sides of the floating seat, and the slide rods penetrate through the arc-shaped grooves.

[0021] Furthermore, an installation hole with an open top is formed in the first installation section, and the elastic support base is inserted into the installation hole.

[0022] Furthermore, a telescopic cylinder control valve is also arranged on the support mechanism mounting plate, and each telescopic cylinder is connected to the telescopic cylinder control valve.

[0023] Compared with the prior art, the present invention has the following technical effects:

[0024] (1) In the present invention, a plurality of movable support mechanisms are arranged on the support mechanism mounting plate, and through the structural design of the support mechanisms, flexible support for gear shafts to be straightened with different lengths can be achieved, the probability of skew between the left center and the right center during the straightening process can be effectively reduced, and further reduction of the straightening accuracy can be avoided.

[0025] (2) In the present invention, a left needle roller bearing, an intermediate bearing, and a right needle roller bearing are arranged in the center sleeve to provide effective limit and support for the center body. This three-bearing design can effectively avoid the accuracy loss of the center body and improve the straightening accuracy.

[0026] (3) Through the cooperation of the left center, the right center, and a plurality of support mechanisms, the present invention can achieve one-time clamping and positioning of the gear shaft to be straightened, and avoid the low processing efficiency caused by continuously clamping and loosening the parts during the straightening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 is the assembly schematic diagram of the left center seat and the left center of the present invention;

[0029] Figure 3 is the structural schematic diagram of the support mechanism;

[0030] Figure 4 is the partial schematic diagram of the support mechanism;

[0031] Figure 5 is the partial cross-sectional view of the support mechanism;

[0032] The meanings of the various reference numerals in the drawings are as follows:

[0033] 1 - Base, 2 - Left center seat, 3 - Right center seat, 4 - Left center, 5 - Right center, 6 - Support mechanism mounting plate, 7 - Support mechanism, 8 - Press head, 9 - Telescopic cylinder control valve, 10 - Elastic support base;

[0034] 11 - Left slide rail, 12 - Right slide rail;

[0035] 21 - Center seat body, 22 - Rotating pin, 23 - Swing arm;

[0036] 41 - Left center drill sleeve, 42 - Left center drill body, 43 - Retaining ring; 44 - Right needle roller bearing, 45 - Intermediate bearing, 46 - Left needle roller bearing, 47 - Right shaft end retaining ring, 48 - Left shaft end retaining ring;

[0037] 411 - First limiting step, 412 - Second limiting step, 413 - Third limiting step;

[0038] 421 - Conical section, 422 - First cylindrical section, 423 - Second cylindrical section, 424 - Third cylindrical section;

[0039] 71 - Telescopic cylinder, 72 - Connecting plate, 73 - Support block, 74 - Adapter seat, 75 - Left baffle, 76 - Right baffle, 77 - Support seat, 78 - Arc groove, 79 - Slide bar, 710 - Floating seat;

[0040] 211 - First installation section, 212 - Second installation section;

[0041] 2111 - Installation hole.

[0042] The following further elaborates on the specific content of the present invention in conjunction with embodiments. Specific embodiments

[0043] The following provides specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and any equivalent transformation based on the technical solution of this application falls within the protection scope of the present invention.

[0044] The terms "upper", "lower", "front", "rear", "top", "bottom", etc. used in the present invention to indicate the orientation or positional relationship 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. "Inner" and "outer" refer to the inside and outside of the corresponding component contour, and the above terms should not be construed as limiting the present invention.

[0045] In addition, ordinal numbers such as "left" and "right" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "left" and "right" may explicitly or implicitly include one or more of such features.

[0046] In the present invention, unless otherwise stated, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Unless otherwise specified, the components in the present invention can be purchased from the market.

[0048] Embodiment 1

[0049] Following the above technical solution, as Figures 1 to 5 shown, this embodiment provides a high-precision floating gear shaft straightening clamping mechanism, including a base 1. On the left and right ends of the base 1 along its length direction, a left center seat 2 and a right center seat 3 are respectively slidably arranged. On the left center seat 2 and the right center seat 3, a left center 4 and a right center 5 for clamping the gear shaft are respectively arranged. The left center 4 and the right center 5 are coaxially symmetrically arranged and can both move up and down vertically;

[0050] On the upper surface of the base 1 between the left center seat 2 and the right center seat 3, a support mechanism mounting plate 6 is further arranged. Along the length direction of the base 1, 4 support mechanisms 7 are equally spaced on the support mechanism mounting plate 6, and the 4 support mechanisms 7 can all slide along the width direction of the base 1;

[0051] Above the base 1, a pressure head 8 is further arranged which can press the gear shaft against the support mechanism 7. The pressure head 8 is installed on the main shaft of the straightening machine tool and can move downward with the main shaft of the machine tool, providing a downward pressure for the gear shaft to be straightened. And the pressure head 8 can move along the length direction of the base 1, so as to provide a downward pressure at different positions of the gear shaft.

[0052] As a preferred solution of this embodiment, a left slide rail 11 and a right slide rail 12 are further arranged on the base 1. The left slide rail 11 and the right slide rail 12 both extend along the length of the base 1, and the left slide rail 11 and the right slide rail 12 are symmetrically arranged on both sides of the support mechanism mounting plate 6; the left slide rail 11 is slidably connected to the left center seat 2, and the right slide rail 12 is slidably connected to the right center seat 3. Specifically, on the bottom surfaces of the left center seat 2 and the right center seat 3, chutes that can match the left slide rail 11 and the right slide rail 12 are respectively opened. After moving the left center seat 2 and the right center seat 3 to the preset positions, the left slide rail 11 can be connected to the left center seat 2 by bolts, and similarly, the right slide rail 12 can be connected to the right center seat 3 by bolts. 75

[0053] As a preferred solution of this embodiment, the left center seat 2 and the right center seat 3 have the same structure and are arranged in mirror symmetry; as Figure 1As shown in the figure, the left center seat 2 includes a center seat body 21, and the center seat body 21 includes a first mounting section 211 and a second mounting section 212 which are integrally connected; a rotating pin 22 is inserted through the second mounting section 212, a swing arm 23 is sleeved on the rotating pin 22, and the left center 4 is inserted into the swing arm 23; an elastic support seat 10 is inserted into the first mounting section 211, and the elastic support seat 10 can be connected to the swing arm 23. When the swing arm 23 moves downward under the gravity of the gear shaft, the elastic support seat 10 can provide an elastic support force for the swing arm 23.

[0054] As a preferred solution of this embodiment, as Figure 2 shown in the figure, the left center 4 has the same structure as the right center 5. The left center 4 includes a left center sleeve 41 and a retaining ring 43 which are connected. A left center body 42 is inserted into the left center sleeve 41, and both ends of the left center body 42 pass through the left center sleeve 41 and the retaining ring 43 respectively;

[0055] The left center body 42 includes a conical section 421, a first cylindrical section 422, a second cylindrical section 423 and a third cylindrical section 424 which are sequentially connected; a right needle roller bearing 44 is sleeved on the first cylindrical section 422, and an intermediate bearing 45 is sleeved on the second cylindrical section 423; a left needle roller bearing 46 is sleeved at the rear end of the third cylindrical section 424. The right needle roller bearing 44, the intermediate bearing 45 and the left needle roller bearing 46 can play a better role in supporting and limiting the left center body 42, effectively avoiding the situation that the left center 4 and the right center 5 are not coaxial and the accuracy is lost due to the multiple downward presses of the indenter 8 to straighten the gear shaft.

[0056] As a preferred solution of this embodiment, an inner cavity is provided in the left center sleeve 41. The inner cavity includes a first mounting cavity, a second mounting cavity, a third mounting cavity and a fourth mounting cavity which are sequentially communicated. A first limiting step 411 is formed at the connection between the first mounting cavity and the second mounting cavity; a second limiting step 412 is formed at the connection between the second mounting cavity and the third mounting cavity; a third limiting step 413 is formed at the connection between the third mounting cavity and the fourth mounting cavity;

[0057] The first limiting step 411 can abut against the rear end face of the conical section 421; the second limiting step 412 can axially limit the right needle roller bearing 44, and the third limiting step 413 can axially limit the intermediate bearing 45.

[0058] In this embodiment, a right shaft end retaining ring 47 for axially limiting the right needle roller bearing 44 is also sleeved on the first cylindrical section 422, and a left shaft end retaining ring 48 for axially limiting the left needle roller bearing 46 is also sleeved on the third cylindrical section 424.

[0059] As a preferred solution of this embodiment, as Figures 3 to 5As shown in the figure, the support mechanism 7 includes a telescopic cylinder 71 installed on the upper surface of the support mechanism mounting plate 6. The output end of the telescopic cylinder 71 is connected to the rear end of the connecting plate 72, and the front end of the connecting plate 72 is connected to a support block 73 vertically arranged on the upper surface of the support mechanism mounting plate 6. The support block 73 can move along the width direction of the base 1 under the drive of the telescopic cylinder 71.

[0060] When supporting the gear shaft, the support mechanism 7 to be used can be selected according to the length of the gear shaft and the support requirements. With the output end of the telescopic cylinder 71, the support block 73 to be used is moved to the lower part of the gear shaft.

[0061] A transfer seat 74 is provided at the top end of the support block 73. The top surface of the transfer seat 74 is a curved surface. A left baffle 75 and a right baffle 76 are respectively vertically arranged on the left and right sides of the transfer seat 74. An installation space is enclosed among the top surface of the transfer seat 74, the inner wall of the left baffle 75 and the inner wall of the right baffle 76. A floating seat 710 is arranged in the installation space. The bottom surface of the floating seat 710 is a curved surface that can fit with the top surface of the transfer seat 74. Through the cooperation of the curved surfaces, the floating seat 710 can rotate a certain angle relative to the transfer seat 74. A support seat 77 is arranged on the floating seat 710. The support seat 77 can be embedded in the floating seat 710, and the top surface of the support seat 77 is concave to form a curved surface.

[0062] In this embodiment, there is no fixed relationship among the transfer seat 74, the floating seat 710, and the support seat 77, and they are only stacked layer by layer.

[0063] As a preferred solution of this embodiment, arc-shaped grooves 78 are both penetrated and opened on the left baffle 75 and the right baffle 76. Slide rods 79 are arranged on both the left and right sides of the support seat 77, and the slide rods 79 are arranged in the arc-shaped grooves 78. When the floating seat 710 rotates relative to the transfer seat 74, the slide rods 79 can play a limiting role to prevent the floating seat 710 from falling off the transfer seat 74, and the slide rods 79 can limit the movement direction of the floating seat 710.

[0064] As a preferred solution of this embodiment, an installation hole 2111 with an open top is opened on the first installation section 211, and the elastic support seat 10 is penetrated and arranged in the installation hole 2111.

[0065] As a preferred solution of this embodiment, a telescopic cylinder control valve 9 is further arranged on the support mechanism mounting plate 6. Each telescopic cylinder 71 is connected to the telescopic cylinder control valve 9 through an air pipe, and each telescopic cylinder 71 can be independently controlled through the telescopic cylinder control valve 9.

[0066] When the present invention is in use: the right center 5 and the left center 4 position the gear shaft to be straightened left and right. During the machining process, the right center 5 and the left center 4 are not loosened to avoid accuracy loss caused by repeated clamping. Select the number of support mechanisms 7 to be used according to the length of the gear shaft, and then control the movement of the telescopic cylinder 71 through the telescopic cylinder control valve 9 to send the support block 73 to be used under the gear shaft to be straightened. Start the straightening machine tool, make the main shaft of the straightening machine tool move downward, drive the pressure head 8 to move downward. Under the action of the pressure head 8, the gear shaft to be straightened drives the swing arm 23 to move downward, thereby driving the right center 5 and the left center 4 arranged in the swing arm 23 to move downward. During this process, the elastic support seat 10 can provide elastic support for the swing arm 23, and further provide elastic support for the right center 5 and the left center 4. The support mechanism 7 provides auxiliary elastic support for the gear shaft to be straightened, and finally realizes the flexible straightening of the gear shaft to be straightened.

[0067] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0068] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0069] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A high-precision floating gear shaft straightening and clamping mechanism, comprising a base (1), wherein a left center seat (2) and a right center seat (3) are slidably arranged at both ends of the base (1) along the length direction, and a left center seat (4) and a right center seat (5) for clamping the gear shaft are arranged on the left center seat (2) and the right center seat (3), respectively, wherein: The left top (4) and the right top (5) are coaxially arranged and can both be lifted and lowered vertically; A support mechanism mounting plate (6) is also provided on the upper surface of the base (1) between the left top seat (2) and the right top seat (3); a plurality of support mechanisms (7) are provided on the support mechanism mounting plate (6) along the length direction of the base (1); and the plurality of support mechanisms (7) are capable of sliding along the width direction of the base (1); A pressing head (8) capable of pressing the gear shaft against the supporting mechanism (7) is also provided above the base (1).

2. The high-precision floating gear shaft straightening and clamping mechanism according to claim 1, characterized in that: The base (1) is also provided with a left slide rail (11) and a right slide rail (12), and the left slide rail (11) and the right slide rail (12) are symmetrically arranged on both sides of the support mechanism mounting plate (6); the left slide rail (11) is slidably connected to the left top seat (2), and the right slide rail (12) is slidably connected to the right top seat (3).

3. The high-precision floating gear shaft alignment clamping mechanism according to claim 1, characterized in that: The left top seat (2) and the right top seat (3) have the same structure and are arranged in a mirror-symmetrical manner; the left top seat (2) comprises a top seat body (21), and the top seat body (21) comprises a first mounting section (211) and a second mounting section (212) which are integrally connected; The second mounting section (212) is provided with a rotating pin (22), the rotating pin (22) is sleeved with a swing arm (23), and the left top (4) is provided in the swing arm (23); An elastic support seat (10) is inserted into the first mounting section (211), and the elastic support seat (10) can be connected to the swing arm (23).

4. The high-precision floating gear shaft alignment clamping mechanism according to claim 1, characterized in that: The left top (4) and the right top (5) have the same structure; The left top tip (4) comprises a left top tip sleeve (41) and a retaining ring (43) which are connected to each other, a left top tip body (42) is inserted into the left top tip sleeve (41), and two ends of the left top tip body (42) are respectively inserted from the left top tip sleeve (41) and the retaining ring (43); The left tip body (42) comprises a conical section (421), a first cylindrical section (422), a second cylindrical section (423) and a third cylindrical section (424) which are sequentially connected; a right needle bearing (44) is sleeved on the first cylindrical section (422), and an intermediate bearing (45) is sleeved on the second cylindrical section (423); and a left needle bearing (46) is sleeved on the rear end of the third cylindrical section (424).

5. The high-precision floating gear shaft alignment clamping mechanism according to claim 4, characterized in that: An inner cavity is provided in the left top sleeve (41), and the inner cavity comprises a first installation cavity, a second installation cavity, a third installation cavity and a fourth installation cavity which are sequentially connected and arranged, a first limiting step (411) is formed at the connection between the first installation cavity and the second installation cavity; a second limiting step (412) is formed at the connection between the second installation cavity and the third installation cavity; and a third limiting step (413) is formed at the connection between the third installation cavity and the fourth installation cavity; The first limiting step (411) can abut against the rear end surface of the conical section (421); the second limiting step (412) can axially limit the right needle bearing (44); and the third limiting step (413) can axially limit the intermediate bearing (45).

6. The high-precision floating gear shaft alignment clamping mechanism according to claim 1, characterized in that: The support mechanism (7) comprises a telescopic cylinder (71) mounted on the upper surface of the support mechanism mounting plate (6), the output end of the telescopic cylinder (71) is connected to the rear end of a connecting plate (72), and the front end of the connecting plate (72) is connected to a support block (73) vertically arranged on the upper surface of the support mechanism mounting plate (6); A transfer seat (74) is arranged at the top of the support block (73), and a left baffle (75) and a right baffle (76) are vertically arranged on the left and right sides of the transfer seat (74), respectively. A placement space is formed between the top surface of the transfer seat (74), the inner wall of the left baffle (75) and the inner wall of the right baffle (76), and a floating seat (710) is arranged in the placement space. A support seat (77) is arranged on the floating seat (710), and the top surface of the support seat (77) is concave to form a curved surface.

7. The high-precision floating gear shaft alignment clamping mechanism according to claim 6, characterized in that: The left baffle plate (75) and the right baffle plate (76) are both provided with arc-shaped grooves (78), and the left and right sides of the floating seat (710) are both provided with sliding rods (79), and the sliding rods (79) are inserted into the arc-shaped grooves (78).

8. The high-precision floating gear shaft alignment clamping mechanism according to claim 3, characterized in that: The first mounting section (211) is provided with a mounting hole (2111) with an open top, and the elastic support seat (10) is inserted into the mounting hole (2111).

9. The high-precision floating gear shaft alignment clamping mechanism according to claim 1, characterized in that: A telescopic cylinder control valve (9) is also provided on the support mechanism mounting plate (6), and each of the telescopic cylinders (71) is connected to the telescopic cylinder control valve (9).

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