Drilling clamp for shaft gear

Abstract

The drilling clamp for the shaft gear is characterized in that the drilling clamp comprises a supporting seat and a pressing plate installed on the supporting seat, a gear shaft of the shaft gear is supported on the supporting seat, a gear body of the shaft gear is matched with the supporting seat in a radial positioning mode, and the pressing plate abuts against the gear end face of the shaft gear to press the shaft gear on the supporting seat in the axial direction. The clamping reliability of the shaft gear is guaranteed, the shaft gear can be drilled in the axial direction and the radial direction, multiple holes can be drilled through one-time clamping, the clamping time in the shaft gear drilling process is shortened, the drilling efficiency is improved, the clamping position error is reduced, the drilling precision is improved, the high requirement for the position between adjacent holes is met, and the drilling quality is improved. And the operability and the effectiveness of the shaft gear drilling procedure are improved.

Description

Technical Field

[0001] The utility model relates to a drilling fixture for shaft gears and belongs to the technical field of shaft gear processing. Background Art

[0002] like Figure 1 As shown, the shaft gear 100 includes a gear 102 and a gear shaft 101 coaxially fixed with the gear 102. It is widely used in gear transmission systems. Due to the assembly requirements of the shaft gear, multiple assembly holes need to be processed on the shaft gear, including axial holes on the gear and axial holes and radial holes on the gear shaft, with a total of 10 to 20 holes, and the position requirements between the holes are high. The problems existing in the drilling processing of shaft gears are:

[0003] 1. To complete the drilling of multiple holes on shaft gears, the shaft gears need to be clamped multiple times. Repeated clamping not only affects the processing efficiency, but also reduces the drilling accuracy. In addition, repeated clamping is prone to position errors, affecting the position between adjacent holes and reducing the drilling quality.

[0004] 2. The clamping stability is not high, which causes axial or radial movement of shaft gears during the drilling process, and also affects the drilling accuracy and quality.

[0005] 3. The area near the connection between gears is often interfered by fixtures, making drilling difficult. Utility Model Content

[0006] The drilling fixture for shaft gears provided by the utility model ensures the clamping reliability of shaft gears, can perform axial and radial drilling on shaft gears, complete multiple holes with one clamping, reduce the clamping time during the drilling process of shaft gears, improve drilling efficiency, reduce clamping position errors, improve drilling accuracy, meet high requirements for the positions between adjacent holes, improve drilling quality, and improve the operability and effectiveness of the drilling process for shaft gears.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The drilling fixture for shaft gears is characterized in that it includes a support seat and a pressure plate installed on the support seat, the gear shaft of the shaft gear is supported on the support seat and the gear of the shaft gear is radially positioned and matched with the support seat, the pressure plate and the gear end face of the shaft gear are abutted to press the shaft gear axially onto the support seat.

[0009] Preferably, the support seat includes a support plate arranged vertically, a base plate fixed at the bottom of the support plate and arranged horizontally, a reinforcing plate fixed between the support plate and the base plate, and a positioning sleeve fixed on the support plate. A through hole is provided on the support plate for the gear shaft of the shaft gear to pass through. The positioning sleeve is coaxially aligned with the through hole. The gear shaft passes through the through hole and the positioning sleeve and is loosely matched with the positioning sleeve.

[0010] Preferably, the through hole is a stepped hole, one end of the positioning sleeve is against the stepped surface of the through hole, and the other end protrudes from the through hole, a radially arranged plane is opened on the outer periphery of the positioning sleeve, and a radial drill guide hole is opened on the plane which radially penetrates to the inner wall of the positioning sleeve.

[0011] Preferably, the support plate is provided with an annular positioning protrusion which cooperates with the groove on the end face of the gear, and the annular positioning protrusion extends into the groove on the end face of the gear.

[0012] Preferably, there are two pressure plates and they are symmetrically arranged. The pressure plates are L-shaped and are positioned on the support plate by bolts. One end of the bolt passes through the pressure plate and the other end passes through the support plate. A spring is sleeved on the bolt and located between the pressure plate and the support plate. The spring is compressed as the bolt is tightened, and the pressure plate presses the gear axially onto the support plate as the bolt is tightened.

[0013] Preferably, one end of the pressure plate abuts against the support plate, and the other end abuts against the end face of the gear, and the end of the pressure plate abutting against the support plate is an arc-shaped end face, forming a linear contact between the pressure plate and the support plate.

[0014] The beneficial effects of the utility model are:

[0015] The utility model discloses a drilling fixture for shaft gears, in which the tooth shaft of the shaft gears is supported on a support seat and the gears of the shaft gears are radially positioned and matched with the support seat, and a pressure plate presses the shaft gears axially onto the support seat to form radial and axial positioning of the shaft gears, thereby ensuring the clamping reliability of the shaft gears. The shaft gears can be axially and radially drilled, and multiple holes can be drilled in one clamping, thereby reducing the clamping time in the process of drilling shaft gears, improving the drilling efficiency, reducing the clamping position error, improving the drilling accuracy, meeting the high requirements for the position between adjacent holes, improving the drilling quality, and improving the operability and effectiveness of the drilling process of shaft gears.

[0016] A radially arranged plane is provided on the outer periphery of the positioning sleeve, and a radial drill guide hole is provided on the plane which radially penetrates to the inner wall of the positioning sleeve. The radial drill guide hole is used to guide the drilling of the radial hole at the inner end of the gear shaft in the shaft gear, thereby solving the problem of difficulty in drilling near the connection position between the gear and the gear shaft due to interference from the fixture, and improving the operability and reliability of drilling; the end where the pressure plate abuts against the support plate is an arc-shaped end face, so that the pressure plate can swing at a small angle to effectively press the gear end face of the shaft gear when the bolt is tightened, thereby reducing the axial movement of the shaft gear during the drilling process and improving the positioning reliability of the shaft gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of shaft gears in the prior art.

[0018] Figure 2It is a schematic diagram of a shaft gear being clamped on a drilling fixture for a shaft gear of the utility model.

[0019] Figure 3 for Figure 2 sectional view of .

[0020] Figure 4 for Figure 2 Another cross-sectional view of .

[0021] Figure 5 A partial enlarged schematic diagram of the support plate.

[0022] Figure 6 Schematic diagram of the pressure plate.

[0023] Figure 7 A top view of the positioning sleeve.

[0024] Figure 8 It is a cross-sectional view of the positioning sleeve. DETAILED DESCRIPTION

[0025] Combine the following Figure 1~2 The embodiments of the present utility model are described in detail.

[0026] The drilling fixture for shaft gears is characterized in that it includes a support seat 1 and a pressure plate 2 installed on the support seat 1, the gear shaft 101 of the shaft gear 100 is supported on the support seat 1 and the gear 102 of the shaft gear 100 is radially positioned and matched with the support seat 1, the pressure plate 2 and the end face of the gear 102 of the shaft gear are abutted to press the shaft gear 100 axially onto the support seat 1.

[0027] In the drilling fixture for shaft gears described above, the gear shaft 101 of the shaft gear 100 is supported on the support seat 1 and the gear 102 of the shaft gear 100 is radially positioned with the support seat 1, and the pressure plate 2 presses the shaft gear 100 axially on the support seat 1 to form radial and axial positioning of the shaft gear 100, thereby ensuring the clamping reliability of the shaft gear 100 and exposing each drilling position of the shaft gear 100, so as to complete multiple drilling holes with one clamping, reduce the clamping time during the drilling process of the shaft gear, improve the drilling efficiency, reduce the clamping position error, improve the drilling accuracy, meet the high requirements of the position between adjacent holes, improve the drilling quality, and improve the operability and effectiveness of the drilling process of the shaft gear.

[0028] The support seat 1 includes a support plate 11 arranged vertically, a bottom plate 12 fixed at the bottom of the support plate 11 and arranged horizontally, a reinforcing plate 13 fixed between the support plate 11 and the bottom plate 12, and a positioning sleeve 14 fixed on the support plate 11. The support plate 11 is provided with a through hole 15 for the gear shaft 101 of the shaft gear 100 to pass through. The positioning sleeve 14 is coaxially aligned with the through hole 15. The gear shaft 101 passes through the through hole 15 and the positioning sleeve 14 and is loosely matched with the positioning sleeve 14. The positioning sleeve 14 radially supports the gear shaft 101, and the radial positioning of the gear 102 and the support seat 1 forms a radial support of the gear 102 by the support seat 1, so that the gear shaft and the gear of the shaft gear 100 are respectively supported on the support seat 1 and radially positioned, thereby improving the reliability and stability of clamping, reducing radial movement during drilling, and improving drilling accuracy.

[0029] The through hole 15 is a stepped hole, one end of the positioning sleeve 14 abuts against the stepped surface of the through hole 14, and the other end protrudes out of the through hole 14. A plane 16 arranged radially is provided on the outer periphery of the positioning sleeve 14, and a radial drilling guide hole 17 is provided on the plane 16 and penetrates radially to the inner wall of the positioning sleeve. The radial drilling guide hole 17 is used to guide the drilling of the radial hole at the inner end of the gear shaft 101 in the shaft gear 100, so as to solve the problem of difficulty in drilling near the connection position between the gear and the gear shaft due to the interference of the fixture, and improve the operability and reliability of drilling.

[0030] The support plate 11 is provided with an annular positioning protrusion 18 that cooperates with the end face groove of the gear 102, and the annular positioning protrusion 18 extends into the end face groove of the gear 102. The annular positioning protrusion 18 cooperates with the gear 102 to form a radial positioning fit between the support seat 1 and the gear 102, ensuring that the shaft gear 100 is reliably positioned on the fixture, and improving the reliability and stability of the clamping.

[0031] There are two pressing plates 2 and they are symmetrically arranged. The pressing plates 2 are L-shaped. The pressing plates 2 are positioned on the support plate 11 by bolts 3. One end of the bolts 3 passes through the pressing plates 2 and the other end passes through the support plate 1. The bolts 3 are sleeved with springs 4 located between the pressing plates 2 and the support plate 11. The springs 4 are compressed as the bolts 3 are tightened. The pressing plates 1 press the gears 102 axially onto the support plate 11 as the bolts 3 are tightened. When the bolts 3 are tightened, the pressing plates 2 press the gears 102 onto the support plate 1 and the springs 4 are compressed. When the bolts 3 are loosened, the springs push the pressing plates 2 apart from the gears 102. At the same time, the pressing plates 2 can rotate on the bolts 3, so that the pressing plates 2 can be staggered from the gears 2 when the bolts 3 are loosened, which is convenient for taking the gears of the rear axles after drilling and installing the gears of the front axles after drilling.

[0032] Among them, one end of the pressing plate 2 abuts against the support plate 11, and the other end abuts against the end face of the gear 101. The end of the pressing plate 2 abutting against the support plate 11 is an arc-shaped end face 21, forming a line contact between the pressing plate 2 and the support plate 11. During the bolt tightening process, the pressing plate 2 will swing a small angle around the line contact position of the arc-shaped end face 21 and the support plate 11 to effectively press the end face of the gear 102, reduce the axial movement of the shaft gear during the drilling process, and improve the positioning reliability of the shaft gear.

[0033] The above is a complete description of the technical solutions of the embodiments of the utility model in combination with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

Claims

1. A drilling fixture for shaft gears, characterized by: It includes a support seat and a pressure plate installed on the support seat. The gear shaft of the shaft gear is supported on the support seat and the gear of the shaft gear is radially positioned and matched with the support seat. The pressure plate abuts against the gear end face of the shaft gear to press the shaft gear axially onto the support seat.

2. The drilling fixture for shaft gears according to claim 1, characterized in that: The support seat includes a support plate arranged vertically, a base plate fixed at the bottom of the support plate and arranged horizontally, a reinforcing plate fixed between the support plate and the base plate, and a positioning sleeve fixed on the support plate. A through hole is provided on the support plate for the gear shaft of the shaft gear to pass through. The positioning sleeve is coaxially aligned with the through hole. The gear shaft passes through the through hole and the positioning sleeve and is loosely matched with the positioning sleeve.

3. The drilling fixture for shaft gears according to claim 2, characterized in that: The through hole is a stepped hole, one end of the positioning sleeve is against the stepped surface of the through hole, and the other end protrudes from the through hole. A radially arranged plane is provided on the outer periphery of the positioning sleeve, and a radial drill guide hole is provided on the plane which radially penetrates to the inner wall of the positioning sleeve.

4. The drilling fixture for shaft gears according to claim 2, characterized in that: The support plate is provided with an annular positioning protrusion matched with the gear end face groove, and the annular positioning protrusion extends into the gear end face groove.

5. The drilling fixture for shaft gears according to claim 2, characterized in that: There are two pressure plates and they are symmetrically arranged. The pressure plates are L-shaped and are positioned on the support plate by bolts. One end of the bolt passes through the pressure plate and the other end passes through the support plate. A spring is sleeved on the bolt and is located between the pressure plate and the support plate. The spring is compressed as the bolt is tightened, and the pressure plate presses the gear axially onto the support plate as the bolt is tightened.

6. The drilling fixture for shaft gears according to claim 5, characterized in that: One end of the pressing plate abuts against the supporting plate, and the other end abuts against the end face of the gear. The end of the pressing plate abutting against the supporting plate is an arc-shaped end face, forming a linear contact between the pressing plate and the supporting plate.

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