Clutch input shaft internal spline gear shaping machining positioning device

Abstract

The utility model discloses a clutch input shaft internal spline gear shaping processing positioning device which comprises a clutch input shaft, the clutch input shaft comprises an upper shaft, a positioning spacer ring and a lower shaft, the clutch input shaft further comprises a base and a positioning seat, the positioning seat is installed at the upper end of the base through a screw, a positioning cavity is formed between the base and the positioning seat, a lining is sleeved on the upper shaft, and the lining is sleeved on the lower shaft. A positioning and tensioning mechanism is arranged between the lining and the positioning cavity, a positioning spacer ring of the clutch input shaft and the lower shaft are positioned in the positioning and tensioning mechanism, and meanwhile the central axis of the clutch input shaft and the central axis of the base are located on the same axis. In this way, it is ensured that the clutch input shaft can coaxially rotate along the central axis of the clutch input shaft, machining of spline gear shaping can be more accurate, and the matching precision of the spline gear shaping and a spline shaft is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece machining fixture field, concretely relates to a kind of clutch input shaft internal spline gear shaping machining positioning device. BACKGROUND

[0002] The main role of clutch input shaft is to transmit the power output by engine to transmission, and then drive the car to travel. Specifically, clutch input shaft transmits the power of engine to transmission through the control of clutch, realizes the gear shifting operation of car, and improves the stability and comfort of travel.

[0003] In addition, clutch input shaft can separate transmission and wheels when engine is idling, to protect the safety of engine and transmission.

[0004] The structure of clutch input shaft includes annular positioning ring provided on its peripheral wall, the upper position of annular positioning ring is upper shaft, the lower position of annular positioning ring is lower shaft, the end face of upper shaft of clutch input shaft is provided with spline gear shaping, and the spline gear shaping is inserted and matched with spline shaft for transmission, while the spline gear shaping matched with spline shaft needs to be machined when machining clutch input shaft, and the machining positioning of existing spline gear shaping is not accurate, clutch input shaft cannot rotate along the center line of clutch input shaft after being clamped, which greatly affects the machining precision of internal spline gear shaping of clutch input shaft. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model aims at providing a clutch input shaft internal spline gear shaping machining positioning device with accurate and reliable positioning, so as to ensure that clutch input shaft can rotate along the coaxial line, which can make the machining of spline gear shaping more accurate and improve the matching precision with spline shaft.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a clutch input shaft internal spline gear shaping machining positioning device, which comprises a base and a positioning seat, the positioning seat is installed on the upper end of the base through screws, a positioning chamber is formed between the base and the positioning seat, a bushing, a rubber expansion sleeve, a positioning back plate, a first pull sleeve and a second pull sleeve are installed in the positioning chamber, the bushing is sleeved on the outer wall of the rubber expansion sleeve and is arranged at the inner hole of the positioning seat, an annular convex inclined guide surface is arranged on the inner hole wall of the positioning seat, the rubber expansion sleeve is compressed when passing through the inclined guide surface, a through hole is arranged at the central axis position of the positioning chamber, one end of the first pull sleeve passes through the through hole and is connected with the piston rod of an oil cylinder, the other end of the first pull sleeve is connected with the second pull sleeve, the second pull sleeve is connected with the rubber expansion sleeve, and the positioning back plate is installed at the opening of the other end of the positioning chamber.

[0007] The second pull sleeve is welded with an equal-height sleeve, the positioning abutting plate is in a circular shape and is provided with a positioning groove, and the positioning abutting plate is connected to the equal-height sleeve through bolts, the lower part of the positioning chamber is provided with a limiting guide groove for the up-down movement of the second pull sleeve, the lower end of the rubber expansion sleeve is provided with an annular clamping groove, and an annular clamping ring is arranged in the clamping groove, and the outer wall of the clamping ring is threadedly connected with the inner wall of the second pull sleeve.

[0008] The outer wall of the other end of the first pull sleeve is provided with a limiting ring, and the inner wall of the second pull sleeve is threadedly connected with the outer wall of the limiting ring on the first pull sleeve.

[0009] The beneficial effects of the utility model are as follows: during operation, the bushing needs to be sleeved on the upper shaft position of the clutch input shaft, the bushing is inserted into the inner hole of the rubber expansion sleeve, the lower shaft of the clutch input shaft is inserted into the inner hole of the first pull sleeve for positioning, the positioning spacer ring of the clutch input shaft is abutted on the positioning abutting plate for positioning, then the first pull sleeve is driven to move downward by the oil cylinder, thereby driving the second pull sleeve and the rubber expansion sleeve above to move downward, the initial position of the rubber expansion sleeve is at the opening of the upper part of the positioning chamber, during the downward movement of the rubber expansion sleeve, the rubber expansion sleeve is compressed along the inclined compression surface, so that the inner hole of the rubber expansion sleeve is compressed against the bushing on the clutch input shaft, thereby realizing the technical effect that the positioning of the clutch input shaft is accurate and reliable, the central axis of the clutch input shaft is aligned with the central axis of the base, and it is ensured that the clutch input shaft can rotate along the coaxial axis, so that the processing of the spline spline is more accurate, and the matching precision of the spline spline and the spline shaft is improved.

[0010] The utility model will be further described below in combination with the drawings and specific embodiments. DRAWINGS

[0011] Figure 1 It is the perspective view of the specific embodiment working state of the utility model;

[0012] Figure 2 It is the structure diagram of the clutch input shaft in the specific embodiment of the utility model.

[0013] In the drawings, 1 is a clutch input shaft, 11 is an upper shaft, 12 is a positioning spacer ring, 13 is a lower shaft, 2 is a base, 3 is a positioning seat, 4 is a positioning chamber, 5 is a bushing, 6 is a rubber expansion sleeve, 7 is a positioning abutting plate, 8 is a first pull sleeve, 9 is a second pull sleeve, 20 is the piston rod of an oil cylinder, 30 is an equal-height sleeve, 31 is an inclined guide surface, and 40 is a perforation. EMBODIMENT

[0014] The utility model will be further described below in combination with the drawings and specific embodiments.

[0015] As Figure 1 , Figure 2The embodiment shown discloses a spline gear shaping positioning device for clutch input shaft 1, the clutch input shaft to be processed includes upper shaft 11, positioning spacer ring 12 and lower shaft 13, the processing positioning device includes base 2 and positioning seat 3, positioning seat 3 is installed on the upper end of base 2 through screws, positioning cavity 4 is formed between base 2 and positioning seat 3, bushing 5, rubber expansion sleeve 6, positioning back plate 7, first pull sleeve 8 and second pull sleeve 9 are installed in positioning cavity 4, bushing 5 is sleeved on the outer wall of rubber expansion sleeve 6 and is arranged at the inner hole of positioning seat 3, the inner hole wall of positioning seat 3 (that is, the upper opening of the positioning cavity) is provided with an annular inclined guide surface 31, when rubber expansion sleeve 6 passes through the inclined guide surface 31, rubber expansion sleeve 6 is compressed, the central axis position of positioning cavity 4 is provided with a through hole 40, one end of first pull sleeve 8 passes through the through hole 40 and is connected with the piston rod 20 of an oil cylinder, the other end of first pull sleeve 8 is connected with second pull sleeve 9, second pull sleeve 9 is connected with rubber expansion sleeve 6, positioning back plate 7 is installed at the other end opening of positioning cavity 4, equal height sleeve 30 is welded on second pull sleeve 9, positioning back plate 7 is in the shape of a circular ring and is provided with a positioning groove for positioning positioning spacer ring 12, positioning back plate 7 is connected with equal height sleeve 30 through bolts, the lower part of positioning cavity 4 is provided with a limiting guide groove for the up-down movement of second pull sleeve 9, the lower end of rubber expansion sleeve 6 is provided with an annular clamping groove, an annular clamping ring is arranged in the clamping groove, the outer wall of the clamping ring is threadedly connected with the inner wall of second pull sleeve 9, through the structure, the connection between rubber expansion sleeve 6 and second pull sleeve 9 is more convenient and reliable. When the positioning tensioning mechanism is operated, bushing 5 needs to be sleeved on the upper shaft 11 of clutch input shaft 1, bushing 5 is inserted into the inner hole of rubber expansion sleeve 6, and lower shaft 13 is inserted into the inner hole of first pull sleeve 8, the inner diameter of the inner hole is matched with the outer diameter of lower shaft 13, then first pull sleeve 8 is driven by the oil cylinder to move downward, and then second pull sleeve 9 and rubber expansion sleeve 6 above are driven to move downward, second pull sleeve 9 moves in the limiting guide groove, the initial position of rubber expansion sleeve 6 is at the upper opening of positioning cavity 4, the peripheral wall of rubber expansion sleeve 6 is in contact with inclined guide surface 31, during the downward movement of rubber expansion sleeve 6, the inclined compression along inclined guide surface 31 is realized, the inner hole of rubber expansion sleeve 6 is compressed to bushing 5 on clutch input shaft 1, and positioning spacer ring 12 is positioned by abutting against positioning back plate 7, so that the positioning and tensioning of clutch input shaft 1 are realized, and the central axis of clutch input shaft 1 is aligned with the central axis of base 2.

[0016] The inner wall of second pull sleeve 9 is threadedly connected with the limiting ring outer wall on first pull sleeve 8, through the structure, the connection between second pull sleeve 9 and first pull sleeve 8 is more convenient and reliable, of course, the connection can also be realized through welding.

[0017] Adopting the technical scheme, the upper shaft 11 of the clutch input shaft 1 is sleeved with the bushing 5, and then is locked and positioned in the positioning chamber 4 through the positioning tensioning mechanism, so that the clutch input shaft 1 rotates with the middle axis of the base 2, so that the positioning of the clutch input shaft 1 can be ensured when the internal spline is processed, and the clutch input shaft 1 can rotate along the middle axis coaxially, so that the processing of the spline is more accurate, and the matching precision with the spline shaft is improved.

[0018] After the clutch input shaft 1 is clamped and positioned by the clutch input shaft 1 internal spline processing positioning device, the spline is accurately milled by the milling cutter.

[0019] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0020] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A positioning device for machining spline gears inside a clutch input shaft, characterized in that: The device includes a base and a positioning seat. The positioning seat is installed on the upper end of the base with screws, forming a positioning chamber between the base and the positioning seat. A bushing, a rubber expansion sleeve, a positioning plate, a first pull sleeve, and a second pull sleeve are installed in the positioning chamber. The bushing is fitted onto the outer wall of the rubber expansion sleeve and is located at the inner hole of the positioning seat. An annular protruding inclined guide surface is provided on the inner wall of the positioning seat. When the rubber expansion sleeve passes through the inclined guide surface, it is compressed. A through hole is provided at the central axis position of the positioning chamber. One end of the first pull sleeve passes through the through hole and is connected to the piston rod of a hydraulic cylinder. The first pull sleeve is placed on the outer wall of the other end of the positioning chamber and connected to the second pull sleeve. The second pull sleeve is connected to the rubber expansion sleeve. The positioning plate is installed at the opening of the other end of the positioning chamber.

2. The positioning device for machining spline gears inside the clutch input shaft according to claim 1, characterized in that: The second sleeve is welded with an equal-height sleeve. The positioning plate is circular in shape and has a positioning groove. The positioning plate is bolted to the equal-height sleeve. The lower part of the positioning chamber is provided with a limiting guide groove for the second sleeve to move up and down. The lower end of the rubber expansion sleeve is provided with an annular groove. An annular retaining ring is provided in the groove. The outer wall of the retaining ring is threaded to the inner wall of the second sleeve.

3. The positioning device for machining spline gears inside the clutch input shaft according to claim 2, characterized in that: The other end of the first sleeve has a protruding limiting ring on its outer wall, and the inner wall of the second sleeve is threadedly connected to the outer wall of the limiting ring on the first sleeve.

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