New energy motor slender shaft internal spline tooth manufacturing clamping device
By using a clamping device with top positioning and a beveled design, combined with chip removal holes and a high-pressure water flushing system, the problems of large thermal deformation and iron filings in the motor shaft of new energy vehicles are solved, achieving high-precision machining and fixture protection.
Patent Information
- Application Number
- CN202520267094.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-19
AI Technical Summary
The motor shafts of new energy vehicles are slender and hollow, and undergo large deformation during heat treatment. Existing fixtures cannot guarantee the machining accuracy of the tooth profile and the smoothness of the hollow shaft, and are prone to causing iron filings to crush the workpiece and wear on the fixtures.
The clamping device, which employs a top-positioning and inclined surface design, combined with chip removal holes and a high-pressure water flushing system, ensures consistency of machining datum and workpiece balance. Rubber chuck expansion sleeves and limit screws prevent iron filings from remaining, and water inlet channels and drain holes are used to clean iron filings.
This achieves consistency in clamping and inspection benchmarks during motor shaft machining, avoiding damage from residual iron filings and fixture wear, thus improving machining accuracy and equipment lifespan.
Smart Images
Figure CN223699551U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a fixture technical field especially relates to a new energy motor slender axle inner spline tooth making clamping device. BACKGROUND
[0002] As the core component of new energy vehicles, the function of the motor is self-evident, and the motor shaft is the most important. With the development of new energy vehicle gear style structure on the market more and more complex diversification, the precision requirement is higher and higher, and the spline tooth shape position of some special gear shaft is relatively special.
[0003] As shown in Figure 1 The new energy vehicle motor shaft is slender and hollow, and the slender shaft has large heat treatment deformation, so the precision of tooth shape processing before heat is extremely high. Therefore, the tooth shape processing clamp is required to be extremely high, considering the tooth shape precision and the smoothness of the hollow shaft chip removal, preventing the workpiece from being pressed by iron chips and the clamp from being worn.
[0004] Therefore, a new energy motor slender axle inner spline tooth making clamping device is urgently needed. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a new energy motor slender axle inner spline tooth making clamping device, the clamping and positioning part is consistent with the final detection reference of the workpiece, adopts a center, can guarantee that the processing detection reference is unified, also guarantees the balance in the workpiece processing process, in addition, the bottom is equipped with a chip removal hole, avoids that the workpiece is pressed by iron chips and the clamp is worn, so as to solve the problems in the above background technology.
[0006] In order to achieve the above object, the utility model provides the following technical scheme:
[0007] A new energy motor slender axle inner spline tooth making clamping device, including the base plate, the pull rod, the fixed base, the pull sleeve, the expansion sleeve positioning seat and the tapered rubber chuck expansion sleeve, the pull rod is slidably connected to the base plate, and the center is equipped with a stepped hole, and the top of the base plate and the center are all contained in the bottom of the stepped hole, and the fixed base is equipped with a chip removal hole in communication with the bottom of the stepped hole, the pull sleeve is slidably connected to the stepped hole, and the pull sleeve is connected to the pull rod, the expansion sleeve positioning seat is connected to one end of the fixed base, and the expansion sleeve positioning seat is equipped with a tapered hole, the rubber chuck expansion sleeve is connected to one end of the pull sleeve and contained in the tapered hole, and the taper of the rubber chuck expansion sleeve is matched with the tapered hole.
[0008] The further improvement scheme of the utility model is that the base plate is connected with the main shaft of the machine tool, the base plate is equipped with a morse No. 3 taper, the morse No. 3 center is installed on the morse No. 3 taper, and the top end of the base plate is inclined.
[0009] The further improved scheme of the utility model discloses, one end of the pull rod is connected with the hydraulic system of the machine tool, one end of the pull rod is connected with the equal-height rod, and the equal-height rod is connected to the pull sleeve.
[0010] The further improved scheme of the utility model discloses, the fixed seat comprises the lower fixed seat and the upper fixed seat that are connected through screws, the lower fixed seat is connected to the bottom disc, and the chip removal hole is arranged on the lower fixed seat.
[0011] The further improved scheme of the utility model discloses, the pull sleeve is provided with a mounting hole at the center, and the pull sleeve comprises the upper pull sleeve and the lower pull sleeve that are matched through threads;The lower pull sleeve is connected to the top of the equal-height rod through screws, and the upper pull sleeve and the lower pull sleeve are slidingly matched in the stepped hole.
[0012] The further improved scheme of the utility model discloses, the expansion sleeve positioning seat is connected to the top of the fixed seat through screws, the top of the pull sleeve is provided with a circular table, and a gasket is arranged between the circular table and the top of the fixed seat.
[0013] The further improved scheme of the utility model discloses, the rubber chuck expansion sleeve comprises a conical metal base, the base is clamped to the top of the pull sleeve, a gap is formed on the base, and a rubber piece is bonded between the gap;The expansion sleeve positioning seat is connected with a first limiting screw, the outer wall of the base of the rubber chuck expansion sleeve is provided with a first limiting groove, and the first limiting screw is accommodated in the first limiting groove.
[0014] The further improved scheme of the utility model discloses, the second limiting screw is connected to the lower fixed seat, the second limiting groove is arranged on the outer wall of the upper pull sleeve, and the second limiting screw is accommodated in the second limiting groove.
[0015] The further improved scheme of the utility model discloses, the connecting column is arranged between the lower pull sleeve and the pull rod, the center of the connecting column and the pull rod is provided with a water inlet channel, and the side surface of the connecting column is provided with a water outlet.
[0016] The further improved scheme of the utility model discloses, the outer walls of the lower fixed seat and the upper fixed seat are connected with lifting lugs.
[0017] The utility model discloses the beneficial effect is:
[0018] The new energy motor slender shaft inner spline tooth making clamping device of the utility model discloses, the clamping and positioning part is consistent with the final detection reference of workpiece, adopts a center, can guarantee that the machining detection reference is uniform, and also guarantees the balance in the workpiece machining process, and in addition, the bottom is provided with a chip removal hole, avoids that the iron filings remain and press the workpiece and clamp own abrasion.
[0019] The new energy motor slender shaft inner spline tooth making clamping device of the utility model discloses, the top of the bottom disc is designed into a slope, and it is convenient for chip liquid iron filings to discharge.
[0020] The new energy motor slender shaft inner spline tooth making clamping device, the fixed seat and the pull sleeve are both two parts, which is convenient to disassemble, maintain and is more light and handy.
[0021] The new energy motor slender shaft inner spline tooth making clamping device, the pull sleeve top end is equipped with a circular table, the circular table and the fixed seat top end are equipped with a gasket, which is used for adjusting the pull sleeve stroke, preventing empty pulling and damaging the rubber chuck expansion sleeve.
[0022] The new energy motor slender shaft inner spline tooth making clamping device, the first limiting screw and the second limiting screw are arranged, which can avoid the rotation of the rubber chuck expansion sleeve and the pull sleeve.
[0023] The new energy motor slender shaft inner spline tooth making clamping device, the center of the connecting column and the pull rod is equipped with a water inlet channel, the side of the connecting column is equipped with a water outlet, the center of the center and the transverse is equipped with a drain hole, which is convenient to play a high-pressure flushing role, flushes the iron filings and dirt on the surface of the center. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a structural schematic view of a motor shaft.
[0025] Figure 2 It is a structural schematic view of the utility model under a working state.
[0026] In the drawing: 1 - base plate, 2 - pull rod, 3 - equal height pole, 4 - center, 401 - drain hole, 5 - lower pull sleeve, 6 - lower fixed seat, 601 - step hole, 602 - chip removal hole, 7 - upper fixed seat, 8 - gasket, 9 - upper pull sleeve, 10 - expansion sleeve positioning seat, 11 - rubber chuck expansion sleeve, 12 - connecting column, 13 - first limiting screw, 14 - second limiting screw, 15 - water inlet channel, 16 - lifting lug, 17 - motor shaft. DETAILED DESCRIPTION
[0027] The utility model is further illustrated below in combination with the drawings and specific embodiments.
[0028] Embodiment 1: as Figures 1-2As shown, a new energy motor elongated shaft inner spline tooth clamping device, including chassis 1, pull rod 2, fixed seat, pull sleeve, expansion sleeve positioning seat 10 and tapered rubber chuck expansion sleeve 11; pull rod 2 is slidingly fitted in chassis 1, and the top center of chassis 1 is connected with a center 4; the fixed seat is connected to the chassis 1, and the fixed seat is provided with a stepped hole 601 in the center, and the top of the chassis 1 and the center 4 are accommodated in the bottom of the stepped hole 601, and the fixed seat is provided with a chip removal hole 602 communicated with the bottom of the stepped hole 601; the pull sleeve is slidingly fitted in the stepped hole 601, and the pull sleeve is connected to the pull rod 2; the expansion sleeve positioning seat 10 is connected to one end of the fixed seat, and the expansion sleeve positioning seat 10 is provided with a tapered hole; the rubber chuck expansion sleeve 11 is connected to one end of the pull sleeve and accommodated in the tapered hole, and the taper of the rubber chuck expansion sleeve 11 is matched with the tapered hole.
[0029] The chassis 1 is connected with the main shaft of the machine tool, and the chassis 1 is provided with a Morse 3 taper, and the Morse 3 center 4 is installed on the Morse 3 taper, and the top end of the chassis 1 is inclined.
[0030] One end of the pull rod 2 is connected with the hydraulic system of the machine tool, and the pull rod 2 is connected with the equal height rod 3, and the equal height rod 3 is connected with the pull sleeve.
[0031] The fixed seat includes a lower fixed seat 6 and an upper fixed seat 7 connected by screws, the lower fixed seat 6 is connected to the chassis 1, and the chip removal hole 602 is arranged in the lower fixed seat 6.
[0032] The pull sleeve is provided with a mounting hole in the center, and the pull sleeve includes an upper pull sleeve 9 and a lower pull sleeve 5 connected by threads; the lower pull sleeve 5 is connected to the top end of the equal height rod 3 by screws, and the upper pull sleeve 9 and the lower pull sleeve 5 are slidingly fitted in the stepped hole 601.
[0033] The expansion sleeve positioning seat 10 is connected to the top end of the fixed seat by screws, and the top end of the pull sleeve is provided with a circular table, and the circular table is provided between the top end of the fixed seat and the gasket 8.
[0034] The rubber chuck expansion sleeve 11 includes a tapered metal base, the base is connected to the top end of the pull sleeve, and the base is provided with a gap, and the gap is bonded with a rubber piece; the expansion sleeve positioning seat 10 is connected with a first limiting screw 13, and the outer wall of the base of the rubber chuck expansion sleeve 11 is provided with a first limiting groove, and the first limiting screw 13 is accommodated in the first limiting groove.
[0035] The second limiting screw 14 is connected to the lower fixed seat 6, and the second limiting groove is arranged on the outer wall of the upper pull sleeve 9, and the second limiting screw 14 is accommodated in the second limiting groove.
[0036] The outer wall of the lower fixed seat 6 and the upper fixed seat 7 is connected with a lifting lug 16.
[0037] Embodiment 2: This embodiment is a further improvement of Embodiment 1, the main improvement is that in Embodiment 1, although there is a chip removal hole 602, the chip removal effect is not good; while in this embodiment, the above-mentioned defects can be avoided, specifically:
[0038] A connecting column 12 is arranged between the lower pull sleeve 5 and the pull rod 2, a water inlet channel 15 is arranged at the center of the connecting column 12 and the pull rod 2, and a water outlet is arranged on the side surface of the connecting column 12; the center of the center and the transverse direction of the center are provided with a drainage hole 401, and the water outlet is aligned with the transverse drainage hole 401; in this embodiment, the center of the connecting column 12 and the pull rod 2 is provided with a water inlet channel 15, the side surface of the connecting column 12 is provided with a water outlet, and the center of the center and the transverse direction of the center is provided with a drainage hole 401, which is convenient for high-pressure flushing effect, and flushes the iron filings and dirt on the surface of the center.
[0039] In addition, this embodiment is the same as Embodiment 1, and will not be repeated here.
[0040] The design principle of the utility model is as follows:
[0041] The bottom disc 1 is used for connecting with the main shaft of the machine tool, the main shaft is connected with a workbench, the workbench is provided with an embedded groove, and the T-shaped bolt is connected with the workbench and adjusts and corrects the center, the inner hole of the bottom disc 1 is made into a Morse No. 3 taper, and is used for mounting the center 4, and the upper part is designed as an inclined surface, so that the iron filings of the chip liquid are discharged.
[0042] The pull rod 2 is connected with the hydraulic system on the machine tool at one end, and is connected with the pull sleeve by the screw at the B4 position through the three screw holes on the upper end surface at one end. The pull rod 2 is internally provided with a high-pressure water inlet channel 15, water is sent to the surface of the center 4 through the connecting column 12, and after the product is finished and taken out, the high-pressure flushing effect is achieved, and the iron filings and dirt on the surface of the center 4 are flushed.
[0043] The equal-height rod 3 is a transition device because the pull rod 2 and the pull sleeve cannot be directly connected due to the limitation of the structure, and the main function of the equal-height rod 3 is to transitionally connect the pull sleeve and the pull rod 2.
[0044] The center 4 is a Morse No. 3 center, which is fixed on the bottom disc 1 by the self-locking function of the taper, mainly plays a center hole auxiliary positioning role, and a drainage hole 401 is arranged in the center and the transverse direction, so that the iron filings and residues are flushed and removed.
[0045] The lower pull sleeve 5 is screwed at one end and connected with the upper pull sleeve 9, and screwed at one end and connected with the equal-height rod 3.
[0046] Upper fixed seat 7 and lower fixed seat 6: These two parts are conventionally made as one piece. However, since the workpiece being machined is relatively long, the travel height of the fixture device also needs to be high enough. If these two devices are designed as one piece, they would be both tall and bulky, increasing the difficulty of machining and manufacturing, and making fixture assembly difficult. The lower fixed seat 6 has a second limit screw 14 installed at B3 and a lifting eye installed at B2.
[0047] Washer 8, its main function is to adjust the stroke of the pull sleeve, prevent it from being pulled without proper support, and avoid damaging the rubber clamp expansion sleeve 11.
[0048] Upper pull sleeve 9: The length is determined according to the product. Its main function is to connect the rubber clamp expansion sleeve 11 and tighten the expansion sleeve.
[0049] Expansion sleeve positioning seat 10: The inner taper of this structure is determined according to the outer taper of the rubber clamp expansion sleeve 11, which generally follows the industry standard of 12 degrees. It is connected to the upper fixed seat 7 by screws. A first limit screw 13 is provided at B1 to prevent the rubber expansion sleeve of part 11 from rotating during the operation of the clamp.
[0050] Rubber chuck expansion sleeve 11: This component primarily clamps the motor shaft 17, mainly relying on rubber adhesion, and has a wide range of elasticity. This component is now a standard part among clamping elements on the market, with low cost and long service life, and is generally purchased from mechanical fixture suppliers. Loading and unloading are performed using a special tool called a gripper.
[0051] Connecting column 12: This component has water inlet channels 15 at its center and side. A sealing ring is provided at B7 on the end face between it and the pull rod 2 to ensure the airtightness of the water inlet channel. In order not to hinder the smooth tightening and loosening of this clamp, it must be consistent with the height of the leveling rod 3. In addition, steel balls are located at B5, B6, and B8 to seal the water inlet channels 15.
[0052] The specific working principle of this utility model is as follows:
[0053] During operation, the operator inserts the motor shaft 17 into the pull sleeve, and the center point 4 is inserted into the center hole at the bottom of the motor shaft 17. The hydraulic cylinder retracts, pulling the pull rod 2, which in turn pulls the pull sleeve downwards. The pull sleeve pulls the rubber chuck expansion sleeve 11 to move within the expansion sleeve positioning seat 10, causing the rubber chuck expansion sleeve 11 to contract and clamp the top of the motor shaft 17, allowing for machining. After machining, the hydraulic cylinder extends, pushing the pull rod 2 and the pull sleeve upwards, causing the rubber chuck expansion sleeve 11 to release the motor shaft 17. After the operator removes the motor shaft 17, high-pressure water enters the center point 4 through the water inlet channel 15, washing away iron filings and dirt from the surface of the center point 4 and discharging it through the chip discharge hole 602. This prevents residual iron filings from damaging the motor shaft 17 and causing wear on the fixture itself, while also improving machining accuracy.
[0054] The above-mentioned embodiments only illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.
Claims
1. A new energy motor slender shaft inner spline tooth clamping device, characterized in that: The utility model provides a kind of chuck, including chassis (1), pull rod (2), fixed seat, pull sleeve, expansion sleeve positioning seat (10) and conical rubber chuck expansion sleeve (11);The pull rod (2) is slidably fitted in chassis (1), and top pin (4) is connected on chassis (1);The fixed seat is connected to chassis (1), and the fixed seat center is equipped with stepped hole (601), and the top of chassis (1) and top pin (4) are all contained in the bottom of stepped hole (601), and the fixed seat is equipped with the chip removal hole (602) being communicated with the bottom of stepped hole (601);The pull sleeve is slidably fitted in stepped hole (601), and the pull sleeve is connected to pull rod (2);The expansion sleeve positioning seat (10) is connected to one end of fixed seat, and the expansion sleeve positioning seat (10) is equipped with taper hole;The rubber chuck expansion sleeve (11) is connected to one end of pull sleeve and is contained in taper hole, and the taper of rubber chuck expansion sleeve (11) is adapted to taper hole.
2. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 1, characterized in that: The chassis (1) is connected with machine tool spindle, and the chassis (1) is equipped with morse No. 3 taper, and the morse No. 3 top pin (4) is installed on the morse No. 3 taper, and the top end of the chassis (1) is inclined.
3. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 1 or 2, characterized in that: One end of the pull rod (2) is connected with the hydraulic system of the machine tool, and the pull rod (2) is connected with the equal-height rod (3) at one end, and the equal-height rod (3) is connected with the pull sleeve.
4. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 3, characterized in that: The fixed seat includes lower fixed seat (6) and upper fixed seat (7) connected by screws, and the lower fixed seat (6) is connected with the chassis (1), and the chip removal hole (602) is arranged in the lower fixed seat (6).
5. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 4, characterized in that: The pull sleeve is equipped with mounting hole at the center, and the pull sleeve includes upper pull sleeve (9) and lower pull sleeve (5) connected by threads; the lower pull sleeve (5) is connected with the top end of the equal-height rod (3) by screws, and the upper pull sleeve (9) and the lower pull sleeve (5) are slidably fitted in the stepped hole (601).
6. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 1, characterized in that: The expansion sleeve positioning seat (10) is connected with the top end of the fixed seat by screws, and the top end of the pull sleeve is equipped with a circular table, and the circular table is equipped with a gasket (8) between the top end of the fixed seat.
7. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 1, characterized in that: The rubber chuck expansion sleeve (11) includes a conical metal base, the base is connected with the top end of the pull sleeve, and the base is equipped with a gap, and the gap is bonded with a rubber piece; the expansion sleeve positioning seat (10) is connected with a first limiting screw (13), and the outer wall of the base of the rubber chuck expansion sleeve (11) is equipped with a first limiting groove, and the first limiting screw (13) is contained in the first limiting groove.
8. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 5, characterized in that: The lower fixed seat (6) is connected with a second limiting screw (14), and the outer wall of the upper pull sleeve (9) is equipped with a second limiting groove, and the second limiting screw (14) is contained in the second limiting groove.
9. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 5, characterized in that: The lower pull sleeve (5) and the pull rod (2) are connected with a connecting column (12), and the connecting column (12) and the pull rod (2) are equipped with a water inlet channel (15) at the center, and the side of the connecting column (12) is equipped with a water outlet; the center of the top pin (4) and the transverse are equipped with a drainage hole (401), and the water outlet is aligned with the transverse drainage hole (401).
10. A new energy motor elongated shaft inner spline tooth cutting clamping device according to claim 4, characterized in that: The outer wall of the lower fixed seat (6) and the upper fixed seat (7) is connected with a lifting lug (16).