Clamp for milling key groove of besides-star wheel

Abstract

The utility model belongs to the technical field of besides-star wheel machining, and particularly relates to a clamp for besides-star wheel key groove milling, which comprises a base and a fixing seat, the fixing seat is arranged on the upper end face of the base, a fixing hole is arranged on the end face of the fixing seat, a plurality of hollow pipes are arranged outside the fixing hole, and a pressure plate is slidably arranged in each hollow pipe. An elastic ring pad is arranged on the side, close to the circle center of the fixing hole, of the pressing disc, a bent ring plate is connected between the elastic ring pad and the pressing disc, a connecting plate is slidably arranged on one side of the fixing seat, a printing strip is arranged on the end face of the connecting plate, and liquid spraying seats are arranged on the two sides of the printing strip and located on the end face of the connecting plate. And a detachable positioner is arranged on the end surface of the fixed seat above the connecting plate. When the besides-star wheel is fixed, not only can automatic centering adjustment be completed, but also effective anti-skid fixing treatment can be achieved, the machining precision and stability are guaranteed, meanwhile, positioning treatment within a certain range can be completed, and the overall operability is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of outer planetary wheel processing, in particular to a clamp for milling keyways of outer planetary wheels. Background Art

[0002] The milling keyway of the outer planet wheel is mainly used for the assembly between the transmission shaft parts, which has a high symmetry requirement. It is necessary to reasonably design the indexing and positioning clamping structure of the fixture to meet the symmetry requirements of the outer planet wheel handle. However, the fixtures currently used for the keyway of the outer planet wheel are all clamped by the handle, and the clamping position is the two generatrixes of the outer planet wheel handle. However, due to the uneven outer circle of the outer planet wheel handle, the clamping is unstable during clamping, which affects the processing accuracy.

[0003] my country's patent application number CN202220744230.9 discloses a clamp for milling keyways of an outer planet wheel, comprising: a bottom plate, two rectangular grooves with openings upward are arranged at intervals on the top of the bottom plate along its length direction, a base and a driving device are fixedly arranged on the two grooves respectively, and a circular mounting hole is arranged on the base along the width direction of the bottom plate; a positioning sleeve, which is fixedly arranged on the mounting hole, the positioning sleeve is arranged to place the handle of the outer planet wheel, and a through hole is arranged on the side of the positioning sleeve and the base close to the driving device, and the driving device passes through the through hole and abuts against the outer side wall of the handle of the outer planet wheel. The utility model firstly clamps the outer periphery of the handle of the outer planet wheel by the positioning sleeve, and then drives the piston rod to abut against the handle of the outer planet wheel by the oil cylinder for re-clamping, thereby avoiding the situation that the clamping is unstable due to the uneven outer circle of the handle of the outer planet wheel, and improving the stability of the clamping.

[0004] In the prior art, the outer star wheel as a whole can ensure a certain clamping stability through the abutment of the piston rod. However, there are still some shortcomings when the whole is in use:

[0005] 1. The existing fixture only uses a single piston rod to fix the inside, but the outer circle of the outer wheel handle is uneven. When pressure is applied in one direction and there is a lack of other external fixation, it is easy to cause the outer wheel to shift to the other side as a whole, making it impossible to effectively center the outer wheel. At the same time, the pressure applied in one direction also causes unstable fixation, which affects the milling process.

[0006] 2. The existing fixture still needs manual adjustment when the outer star wheel adjusts the milling position, so an external structure is often required for positioning. However, the milling station is relatively small, and the external positioning structure is inconvenient to install, which affects the production efficiency. However, the existing fixture lacks certain auxiliary positioning structures. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a clamp for milling keyways of outer planetary wheels.

[0008] The present invention arranges a pressure plate, an elastic ring pad, and a bent ring plate, so that when the outer star wheel is fixed, it can not only complete automatic centering adjustment but also obtain effective anti-slip fixation treatment, thereby ensuring the accuracy and stability during processing. The arrangement of the printing strip and the positioning component enables the fixture to complete positioning processing within a certain range without the need for an external structure, thereby effectively improving the overall operability.

[0009] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamp for milling keyway of an outer star wheel, comprising a base, a fixed seat, a fixed seat on the upper end face of the base, a fixed hole on the end face of the fixed seat, a plurality of hollow tubes are evenly arranged in the circumferential direction outside the fixed hole in the fixed seat, a pressure plate is slidably arranged in each of the hollow tubes, an elastic ring pad is arranged on the side of the pressure plate close to the center of the fixed hole, a bending ring plate is connected and arranged between the elastic ring pad and the pressure plate, a connecting plate is slidably arranged on one side of the fixed seat, a printing strip is arranged on the end face of the connecting plate, a liquid spraying seat is arranged on both sides of the printing strip on the end face of the connecting plate, a liquid spraying port is arranged on the end face of the liquid spraying seat, a positioning assembly is arranged below the connecting plate, and a detachable positioner is arranged on the end face of the fixed seat above the connecting plate. The arrangement of the elastic ring pad and the bending ring plate can provide a good anti-slip effect while ensuring the clamping pressure, and can avoid clamping loss at the end of the outer star wheel shaft on the other hand.

[0010] Preferably, detachable anti-skid rings are provided on both sides of the fixing hole on the end surface of the fixing seat, and a plurality of anti-skid grooves are provided on the inner circumference of each anti-skid ring. The provision of the anti-skid rings and the anti-skid grooves can prevent the outer star wheel from slipping when adjusting the angle.

[0011] Preferably, the positioning assembly includes a slide groove arranged on the end surface of the base, a slider is slidably arranged in the slide groove, a bending plate is connected to the upper end surface of the slider, a first push cylinder is arranged on the plane end surface of the bending plate, and the output end of the first push cylinder is connected to the bottom end surface of the connecting plate. The arrangement of the bending plate and the slider enables the connecting plate to position the outer star wheel shaft ends at different positions.

[0012] Preferably, the positioning assembly further comprises a positioning rod disposed on the bending end surface of the bending plate, and a positioning hole is disposed on one side of the positioning rod on the end surface of the fixing seat. The arrangement of the positioning rod and the positioning hole can ensure the centering positioning effect of the entire connecting plate.

[0013] Preferably, the bending plate is provided with a liquid storage seat, and the liquid storage seat is connected with a plurality of elastic ring pads through a hose. The provision of the liquid storage seat enables the marking liquid to be smoothly supplied to the liquid spraying seat.

[0014] Preferably, the end surface of the fixing seat above the fixing hole is provided with a mounting groove, a mounting block is provided in the mounting groove, and the mounting block is externally connected to the positioner. The arrangement of the mounting block and the mounting groove enables the positioner to be quickly installed.

[0015] Preferably, an anti-skid belt is arranged on the outer end surface of each elastic ring pad. The provision of the anti-skid belt improves the anti-skid fixing effect on the outer star wheel.

[0016] Preferably, a second pushing cylinder is fixedly disposed in each of the hollow tubes, and an output end of the second pushing cylinder is connected to an end surface of the pressure plate.

[0017] Preferably, both sides of the fixing seat are arranged on the air supply device.

[0018] In summary, compared with the prior art, the beneficial effects of this solution are:

[0019] (1) The present invention arranges the pressure plate, the bent ring plate and the elastic ring pad, so that before the keyway is milled, the outer star wheel can not only be centered and positioned to reduce the occurrence of offset deformation, but also ensure anti-slip stability and avoid clamping damage, thereby effectively improving the milling accuracy of the keyway and improving the production quality.

[0020] (2) The present invention uses the printing strip, the liquid spraying seat and the positioner to enable the fixture to complete effective positioning processing within a certain accuracy range without the need for external structure positioning, thereby improving the operability of the fixture, enabling the fixture to better adapt to different processing environments and ensuring practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 It is a front view of the present invention;

[0023] Figure 3 is a side view of the present invention;

[0024] Figure 4 for Figure 2 Stereoscopic cross-sectional view at AA in the middle;

[0025] Figure 5 for Figure 3 A three-dimensional cross-sectional view of the middle BB;

[0026] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0027] Figure 7It is a three-dimensional diagram of the elastic ring gasket parts;

[0028] Figure 8 for Figure 3 Stereoscopic cross-sectional view at DD in the middle;

[0029] Fig. 9 A perspective view of a positioning assembly;

[0030] Fig.10 for Figure 8 A partial enlarged view of point E in the middle;

[0031] Fig.11 for Figure 4 A partial enlarged view of point F in the middle;

[0032] In the figure: base 10, fixing seat 11, fixing hole 12, anti-skid ring 13, anti-skid groove 14, slide groove 15, slider 16, bending plate 17, first push cylinder 18, connecting plate 19, second push cylinder 20, positioner 21, mounting block 22, mounting groove 23, air supply device 24, elastic ring pad 25, hollow tube 26, pressure plate 27, anti-skid belt 28, bending ring plate 29, positioning rod 30, printing strip 31, liquid spray port 32, liquid storage seat 33, positioning hole 34, liquid spray seat 35. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0034] Embodiment 1:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Fig. 9 and Fig.10As shown, a clamp for milling keyways of outer planetary wheels comprises a base 10 and a fixed base 11. The fixed base 11 is arranged on the upper end surface of the base 10, and a fixed hole 12 is arranged on the end surface of the fixed base 11. A plurality of hollow tubes 26 are evenly arranged in the circumferential direction outside the fixed hole 12 in the fixed base 11, and a pressure plate 27 is slidably arranged in each hollow tube 26. An elastic ring pad 25 is arranged on the side of the pressure plate 27 close to the center of the fixed hole 12, and a bending ring plate 29 is connected between the elastic ring pad 25 and the pressure plate 27. A connecting plate 19 is slidably arranged on one side of the fixed base 11, and a printing strip 31 is arranged on the end surface of the connecting plate 19. Liquid spray seats 35 are arranged on both sides of the printing strip 31 on the end surface of the connecting plate 19, and a liquid spray port 32 is arranged on the end surface of the liquid spray seat 35. A positioning assembly is arranged below the connecting plate 19, and a detachable positioner 21 is arranged on the end surface of the fixed base 11 above the connecting plate 19.

[0036] Specifically, a plurality of holes for fixing are provided on the end face of the base 10, so that the staff can quickly place the fixture on the milling table to improve work efficiency; when the keyway needs to be milled on the shaft surface of the outer star wheel, the staff can place the shaft end of the outer star wheel in the fixing hole 12 at the center of the fixing seat 11 after fixing the fixture. The overall diameter of the fixing hole 12 is slightly larger than the diameter of the shaft end of the outer star wheel, so that the outer star wheel can be smoothly inserted. In this relationship, the diameter of the fixing hole 12 and the size of the fixture are set according to actual conditions, and this scheme will not be elaborated in detail.

[0037] When the outer planetary wheel shaft end is placed inside the fixing hole 12, the pressure plate 27 sliding inside the multiple hollow tubes 26 will move outward synchronously, thereby driving the bent ring plate 29 and the elastic ring pad 25 on the end face to move toward the outer cylindrical surface of the outer planetary wheel shaft end. The multiple elastic ring pads 25 and the bent ring plate 29 are all made of elastic and non-slip rubber material. The bent shape of the bent ring plate 29 will open the entire end face of the elastic ring pad 25 outward. When the end face of the elastic ring pad 25 contacts the outer cylindrical surface of the outer planetary wheel shaft end, the elastic ring pad 25 and the bent ring plate 29 can produce a certain elastic deformation according to the curvature change of the outer cylindrical surface of the outer planetary wheel shaft end, so that the pressure applied by the pressure plate 27 can be fully transmitted to the outer planetary wheel, effectively ensuring the fixing effect. In the above scheme, there are three hollow tubes 26 arranged outside the fixing hole 12 along the circumferential direction. When the multiple elastic ring pads 25 move outward synchronously, they can play the role of automatic centering of the three-jaw chuck, so that the clamped and fixed outer planetary wheel can complete the centering processing.

[0038] When the outer star wheel is completely centered and fixed, the liquid spraying seats 35 arranged on both sides of the end face of the connecting plate 19 will spray the marking liquid on the arc surface of the printing strip 31 through the liquid spraying port 32, so that the marking object can be coated on the arc surface of the printing strip 31, and then the connecting plate 19 will vertically drive the printing strip 31 to contact the outer cylindrical surface of the outer star wheel that needs to be milled, so that the marking object can be adhered to the outer cylindrical surface of the outer star wheel. At this time, a straight line mark will be formed on the outer cylindrical surface of the outer star wheel. At this time, the staff can rotate the outer star wheel after the multiple pressure plates 27 are released, so that the straight line mark on the outside of the outer star wheel moves to the top. During this movement, the positioner 21 will open, so that the straight line mark will be detected. When the straight line mark and the positioner 21 detect a synchronous straight line, the staff can stop rotating. At this time, the multiple pressure plates 27 can continue to apply pressure to complete the clamping. At this time, the equipment can perform milling processing. When a single keyway is milled, the printing strip 31 will continue to mark, thereby completing the subsequent milling processing;

[0039] In the above scheme, the liquid spray port 32 is tilted as a whole, so that the sprayed marking liquid can be accurately sprayed on the curved surface of the printing strip 31, and the printing strip 31 is in an arc shape, so that the excess sprayed marking liquid can flow to both sides, reducing the occurrence of repeated sticking. In this scheme, the marking liquid is the existing technology, and this scheme will not be elaborated in detail.

[0040] Further, such as Figure 5 As shown, a second pushing cylinder 20 is fixedly disposed in each hollow tube 26 , and an output end of the second pushing cylinder 20 is connected to an end surface of a pressure plate 27 .

[0041] Specifically, the second push cylinder 20 is a prior art, and this solution will not elaborate on it in detail. The output end of the second push cylinder 20 can push the pressure plate 27 to complete the clamping and fixing of the outer star wheel shaft end.

[0042] Further, such as Figure 7 As shown, an anti-slip belt 28 is provided on the outer end surface of each elastic ring pad 25.

[0043] Specifically, the anti-skid belt 28 is provided with a plurality of anti-skid stripes on the outside. The anti-skid belt 28 effectively improves the contact friction between the elastic ring pad 25 and the outer star wheel shaft end, thereby improving the overall clamping stability.

[0044] Further, such as Figure 1 , Figure 7 , Figure 8 and Fig. 9 As shown, the positioning assembly includes a slide groove 15 arranged on the end face of the base 10, a slider 16 is slidably arranged in the slide groove 15, a bending plate 17 is connected to the upper end face of the slider 16, a first push cylinder 18 is arranged on the plane end face of the bending plate 17, and the output end of the first push cylinder 18 is connected to the bottom end face of the connecting plate 19.

[0045] Specifically, the slide groove 15 and the slider 16 are both T-shaped, which can ensure good stability while ensuring the smooth movement of the bending plate 17 on the upper end surface of the slider 16. When the milling position of the outer star wheel changes linearly, the bending plate 17 and the slider 16 can be supported to slide inside the slide groove 15, thereby driving the connecting plate 19 above the bending plate 17 to move, so that the connecting plate 19 can mark the outer cylindrical surface of the outer star wheel at different positions; the first push cylinder 18 is a prior art, and this scheme will not be elaborated on in detail. The output end of the first push cylinder 18 can push the connecting plate 19 to move up and down, so that the printing strip 31 can successfully complete the marking process.

[0046] Further, such as Fig. 9 and Fig.11 As shown, the positioning assembly further includes a positioning rod 30 disposed on the bent end surface of the bending plate 17 , and a positioning hole 34 is disposed on one side of the positioning rod 30 on the end surface of the fixing seat 11 .

[0047] Specifically, the bending plate 17 is bent as a whole, and the positioning rod 30 arranged on the bending end surface of the bending plate 17 close to the fixed seat 11 is coaxially arranged with the positioning hole 34 on the end surface of the fixed seat 11. When the bending plate 17 moves to one side of the fixed seat 11, the positioning rod 30 can be inserted into the positioning hole 34, so that centering can be performed.

[0048] Further, such as Fig. 9 and Fig.11 As shown, a liquid storage seat 33 is provided on the bending plate 17, and the liquid storage seat 33 is connected to a plurality of elastic ring pads 25 through a hose.

[0049] Specifically, the liquid storage seat 33 provides marking liquid to the multiple elastic ring pads 25 through multiple hoses, so that the printing strip 31 can complete the marking process smoothly.

[0050] Further, such as Figure 1 and Figure 8 As shown, a mounting groove 23 is provided at the end surface of the fixing seat 11 above the fixing hole 12 , a mounting block 22 is provided in the mounting groove 23 , and the outside of the mounting block 22 is connected to the positioner 21 .

[0051] Specifically, the cross-sections of the mounting groove 23 and the mounting block 22 are both T-shaped, so that the mounting block 22 can be smoothly fixed inside the mounting groove 23, and the positioner 21 can accurately detect the marking line to ensure the centering effect of the keyway.

[0052] Further, such as Figure 2 As shown, both sides of the fixing base 11 are provided with air supply devices 24 .

[0053] Specifically, the air supply device 24 provides an air source for the plurality of first push cylinders 18 and the second push cylinders 20 , so that the first push cylinders 18 and the second push cylinders 20 can complete the adjustment processing of the output end.

[0054] Embodiment 2:

[0055] like Figure 1 As shown, a clamp for milling keyways of outer planetary wheels is provided with detachable anti-skid rings 13 on the end surfaces of the fixing seat 11 on both sides of the fixing hole 12, and a plurality of anti-skid grooves 14 are provided on the inner circumference of each anti-skid ring 13.

[0056] As a further embodiment, the anti-skid ring 13 is made of elastic anti-skid rubber material, is coaxially arranged with the fixing hole 12, and is provided with a plurality of V-shaped anti-skid grooves 14 on the inner circular surface. When the outer planet wheel shaft end is inserted into the fixing hole 12, it can provide a certain anti-skid stabilization effect on the outside of the outer planet wheel shaft end, which can effectively reduce the occurrence of slipping when the outer planet wheel is rotated to adjust the angle.

[0057] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0058] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0059] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A fixture for milling keyways of outer planetary wheels, comprising a base (10) and a fixing seat (11), characterized in that: The upper end surface of the base (10) is provided with a fixing seat (11), and a fixing hole (12) is provided on the end surface of the fixing seat (11). A plurality of hollow tubes (26) are evenly arranged outside the fixing hole (12) and inside the fixing seat (11) along the circumferential direction. A pressure plate (27) is slidably arranged inside each of the hollow tubes (26). An elastic ring gasket (25) is provided on one side of the pressure plate (27) close to the center of the fixing hole (12). A connection is provided between the elastic ring gasket (25) and the pressure plate (27). A bending ring plate (29) is provided, a connecting plate (19) is slidably provided on one side of the fixing seat (11), a printing strip (31) is provided on the end surface of the connecting plate (19), a liquid spraying seat (35) is provided on both sides of the printing strip (31) on the end surface of the connecting plate (19), a liquid spraying port (32) is provided on the end surface of the liquid spraying seat (35), a positioning assembly is provided below the connecting plate (19), and a detachable positioner (21) is provided on the end surface of the fixing seat (11) above the connecting plate (19).

2. The fixture for milling keyway of outer planetary wheel according to claim 1, characterized in that: Removable anti-skid rings (13) are provided on both sides of the fixing hole (12) on the end surface of the fixing seat (11), and a plurality of anti-skid grooves (14) are provided on the inner circumferential surface of each anti-skid ring (13).

3. The fixture for milling keyway of outer planetary wheel according to claim 1, characterized in that: The positioning assembly comprises a slide groove (15) arranged on the end surface of the base (10), a slider (16) is slidably arranged in the slide groove (15), a bending plate (17) is connected to the upper end surface of the slider (16), a first pushing cylinder (18) is arranged on the plane end surface of the bending plate (17), and the output end of the first pushing cylinder (18) is connected to the bottom end surface of the connecting plate (19).

4. The fixture for milling keyway of outer planetary wheel according to claim 3, characterized in that: The positioning assembly also includes a positioning rod (30) arranged on the bent end surface of the bent plate (17), and a positioning hole (34) is arranged on one side of the positioning rod (30) on the end surface of the fixing seat (11).

5. The fixture for milling keyway of outer planetary wheel according to claim 3, characterized in that: A liquid storage seat (33) is provided on the bending plate (17), and the liquid storage seat (33) is connected to a plurality of elastic ring pads (25) via a hose.

6. The fixture for milling keyway of outer planetary wheel according to claim 4, characterized in that: The fixing seat (11) is provided with a mounting groove (23) at the end surface above the fixing hole (12), a mounting block (22) is provided in the mounting groove (23), and the outside of the mounting block (22) is connected to the positioner (21).

7. The fixture for milling keyway of outer planetary wheel according to claim 1, characterized in that: An anti-slip belt (28) is provided on the outer end surface of each elastic ring pad (25).

8. The fixture for milling keyway of outer planetary wheel according to claim 1, characterized in that: Both sides of the fixing seat (11) are provided with air supply devices (24).

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