Special-shaped pump shaft milling key groove machining clamp

Abstract

The special-shaped pump shaft milling key groove machining clamp comprises a near-end supporting base, a far-end supporting base, a baffle and a pressing plate, the near-end supporting base is fixed to a milling machine machining table, and the surface of the near-end supporting base is provided with a first supporting groove matched with the conical end of a pump shaft; the surface of the pressing plate is provided with a pressing groove matched with the near end of the pump shaft, the pressing plate is connected with a milling machine machining table through a connecting rod, the baffle and the far-end supporting base are located on a supporting frame on the outer side of the milling machine machining table, and the baffle is provided with a rear abutting part used for abutting against the far end of the pump shaft. The far-end supporting base is connected with the supporting frame through an elastic adjusting piece, and a second supporting groove matched with the far-end portion of the pump shaft is formed in the surface of the far-end supporting base. According to the utility model, along with the change of the height of the milling machine processing table, the angle which is the same as the taper of the conical end is always formed between the special-shaped pump shaft and the milling machine processing table, so that the subsequent processing requirement of the special-shaped pump shaft is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pump shaft processing, in particular to a special-shaped pump shaft keyway milling processing fixture. Background Art

[0002] In order to solve the problem of large clearance or interference between the pump shaft and the coupling, our company has designed a special-shaped pump shaft, that is, the matching end of the pump shaft and the coupling is designed to be a tapered end, and a keyway corresponding to the flat key on the coupling is opened on the surface of the tapered end.

[0003] In order to ensure the stability of the fit between the flat key and the keyway, the bottom surface of the keyway needs to be processed parallel to the external section of the tapered end. This requires that when processing the entire pump shaft, it is necessary to ensure that the proximal end of the pump shaft and the milling machine table have the same angle as the taper of the tapered end. At the same time, due to the processing requirements of the keyway of 10mm-15mm, it is impossible to complete the milling in one go on an ordinary milling machine, and it is necessary to perform sequential processing at a certain depth. This results in the height of the milling machine table changing with the change in processing depth each time, and the existing processing fixture cannot meet the requirements of the above two processing conditions at the same time. Therefore, it is urgent to develop a fixture that can cope with the milling keyway processing of special-shaped pump shafts. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a special-shaped pump shaft keyway milling fixture, which can ensure that the special-shaped pump shaft and the milling machine table always have the same taper angle as the tapered end as the height of the milling machine table changes.

[0005] The technical solution of the utility model is: a special-shaped pump shaft milling keyway processing fixture, including a proximal support seat, a distal support seat, a baffle and a pressure plate, the proximal support seat is fixed on the milling machine processing table, and the surface of the proximal support seat has a first support groove that matches the tapered end of the pump shaft, the surface of the pressure plate has a pressure groove that matches the proximal end of the pump shaft, and the pressure plate is connected to the milling machine processing table via a connecting rod, the baffle and the distal support seat are located on a support frame outside the milling machine processing table, the baffle has a rear abutment portion for abutting the distal end of the pump shaft, the distal support seat is connected to the support frame via an elastic adjustment member, and the surface of the distal support seat has a second support groove that matches the distal end of the pump shaft. The two ends of the special-shaped pump shaft are respectively supported on the support grooves, and then fixed vertically and laterally by the pressure plate and the baffle plate, so that the special-shaped pump shaft is set on the milling machine processing table at a certain angle. When the milling machine processing table is raised and moved, the elastic adjustment part moves with the distal end of the special-shaped pump shaft along with the milling machine processing table under its own reset action to meet the subsequent processing requirements of the special-shaped pump shaft.

[0006] The elastic adjustment member includes a guide column, an adjustment screw, an adjustment seat and a compression spring. The guide column is fixedly installed at the bottom of the distal support seat. The adjustment screw is installed on the support frame through a driving nut, and the upper end of the adjustment screw is fixedly connected to the adjustment seat. Guide holes for vertical sliding of the guide column are provided at both ends of the adjustment seat. The compression spring is sleeved on the guide column between the distal support seat and the adjustment seat.

[0007] The first supporting groove and the second supporting groove are V-shaped grooves. The V-shaped grooves can be used to adapt to special-shaped pump shafts of different sizes.

[0008] The pressure plate is fixed with a connecting plate, one end of the connecting rod passes through the connecting plate and is connected to the connecting nut, and the other end of the connecting rod is fixed with a slider, which is slidably connected to the T-shaped slide rail on the surface of the milling machine processing table. The pressure plate is slidably connected to the milling machine processing table via the slider, and its fixed position can be adjusted according to the different sizes of the special-shaped pump shaft.

[0009] The baffle is an L-shaped baffle, the vertical end of the L-shaped baffle is the rear abutment portion, and the horizontal end of the L-shaped baffle is adjustably mounted on the support frame via a horizontal adjustment member.

[0010] The horizontal adjustment member includes an adjustment bolt and an adjustment nut. A strip hole with the same sliding direction as the T-shaped slide rail is opened on the horizontal end of the L-shaped baffle. The adjustment bolt passes through the through hole of the support frame and the strip hole of the L-shaped baffle in sequence and is connected to the adjustment nut.

[0011] The beneficial effects of the utility model are as follows: in this scheme, a proximal support seat, a distal support seat, a baffle and a pressure plate are arranged; the support grooves on the proximal support seat and the distal support seat are used to support the two ends of the special-shaped pump shaft; the pressure plate and the baffle are used to position the special-shaped pump shaft vertically and laterally, so that the special-shaped pump shaft is fixed on the milling machine processing table at a certain angle; at the same time, due to the presence of the elastic adjusting part on the distal support seat, when the milling machine processing table is raised and moved, the elastic adjusting part moves with the distal end of the special-shaped pump shaft along with the milling machine processing table under its own resetting action, thereby meeting the subsequent processing requirements of the special-shaped pump shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection between the proximal support seat, the pressure plate and the special-shaped pump shaft in the utility model;

[0015] Figure 4 It is a schematic diagram of the connection between the elastic adjustment member and the distal support seat in the utility model;

[0016] Figure 5 It is a schematic diagram of the connection between the far-end support seat, the baffle and the special-shaped pump shaft in the utility model.

[0017] Figure numerals: 1. milling machine processing table; 101. T-shaped slide rail; 2. pump shaft; 201. tapered end; 202. keyway; 3. proximal support seat; 301. first support groove; 4. distal support seat; 401. second support groove; 5. pressure plate; 501. pressure groove; 6. baffle; 601. strip hole; 7. support frame; 8. elastic adjustment member; 801. adjustment screw; 802. adjustment seat; 803. drive nut; 804. guide column; 805. compression spring; 9. connecting plate; 10. connecting rod; 11. connecting nut; 12. slider; 13. adjustment bolt; 14. adjustment nut. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model is clearly and completely described below in conjunction with the accompanying drawings. Other embodiments obtained by those skilled in the art without making any creative work should all fall within the protection scope of the utility model.

[0019] like Figure 1 As shown, the utility model provides a special-shaped pump shaft milling keyway processing fixture, including a proximal support seat 3, a distal support seat 4, a baffle 6 and a pressure plate 5, the proximal support seat 3 is fixed on the milling machine processing table 1, and the surface of the proximal support seat 3 has a first support groove 301 that matches the tapered end 201 of the pump shaft 2, the surface of the pressure plate 5 has a pressure groove 501 that matches the proximal end of the pump shaft 2, and the pressure plate 5 is connected to the milling machine processing table 1 via a connecting rod 10, the baffle 6 and the distal support seat 4 are located on the support frame 7 outside the milling machine processing table 1, the baffle 6 has a rear abutment portion for abutting the distal end of the pump shaft 2, the distal support seat 4 is connected to the support frame 7 via an elastic adjustment member 8, and the surface of the distal support seat 4 has a second support groove 401 that matches the distal end of the pump shaft 2. Figure 2 As shown, on the axial section coaxial with the pump shaft 2, there is an angle between the bottom edge lines of the first support groove 301, the second support groove 401 and the pressure groove 501 and the horizontal line, and the angle of the second support groove 401 is equal to the angle of the pressure groove 501, and is smaller than the angle of the first support groove 301. At this time, both ends of the pump shaft 2 are supported on the first support groove 301 and the second support groove 401, respectively, and the pressure plate 5 and the baffle 6 respectively position the pump shaft 2 vertically and laterally, so that the special-shaped pump shaft 2 is inclined at a certain angle on the milling machine processing table 1.

[0020] like Figure 4As shown, the elastic adjustment member 8 includes a guide column 804, an adjustment screw 801, an adjustment seat 802 and a compression spring 805. The guide column 804 is fixedly installed at the bottom of the distal support seat 4. The adjustment screw 801 is installed on the support frame 7 through a driving nut 803, and the upper end of the adjustment screw 801 is fixedly connected with the adjustment seat 802. Both ends of the adjustment seat 802 are provided with guide holes for the guide column 804 to slide vertically. The compression spring 805 is sleeved on the guide column 804 between the distal support seat 4 and the adjustment seat 802. When the fixed plate is positioned, the distal end of the pump shaft 2 applies pressure downward to the distal support seat 4. At this time, the compression spring 805 is in a compressed state. When the milling machine processing table 1 is lifted and moved, the compression spring 805 moves the distal end of the pump shaft 2 upward with the milling machine processing table 1 under its own reset action, thereby meeting the subsequent processing requirements of the special-shaped pump shaft 2.

[0021] In order to adapt to the special-shaped pump shafts 2 of different sizes, the first supporting groove 301 and the second supporting groove 401 are V-shaped grooves.

[0022] like Figure 3 As shown, a connecting plate 9 is fixed on the pressing plate 5, one end of the connecting rod 10 passes through the connecting plate 9 and is connected to the connecting nut 11, and a slider 12 is fixed to the other end of the connecting rod 10, and the slider 12 is slidably connected to the T-shaped slide rail 101 on the surface of the milling machine processing table 1. By setting the slider 12, the pressing plate 5 and the milling machine processing table 1 can be adjusted and moved relative to each other, so that the fixed position thereof can be adjusted according to the different sizes of the special-shaped pump shaft 2.

[0023] like Figure 5 As shown, the baffle 6 is an L-shaped baffle, and the vertical end of the L-shaped baffle is the rear abutment. In order to laterally position the special-shaped pump shaft 2 of different lengths, the horizontal end of the L-shaped baffle 6 is adjustably installed on the support frame 7 via a horizontal adjustment member. Preferably, the horizontal adjustment member includes an adjusting bolt 13 and an adjusting nut 14. A strip hole 601 having the same sliding direction as the T-shaped slide rail 101 is opened on the horizontal end of the L-shaped baffle 6. The adjusting bolt 13 passes through the through hole of the support frame 7, the strip hole 601 of the L-shaped baffle 6 and the adjusting nut 14 in sequence.

[0024] When implementing this technical solution, if Figure 1As shown, the support frame 7 is placed on one side of the milling machine, the distal end and the tapered end 201 of the pump shaft 2 are respectively placed on the distal support seat 4 of the support frame 7 and the proximal support seat 3 of the milling machine processing table 1, and the adjusting screw 801 is rotated to make the bottom of the supporting grooves of the distal support seat 4 and the proximal support seat 3 fit with the surface of the pump shaft 2, and the position of the baffle plate 6 is adjusted so that the vertical end of the baffle plate 6 abuts against the distal end of the pump shaft 2, and the pressure plate 5 is pressed against the surface of the pump shaft 2 through the connecting rod 10 on the milling machine processing table 1, and the adjusting screw is rotated. Rod 801 contracts the compression spring 805 (the compression spring 805 can select a suitable elastic modulus according to the weight of the different special-shaped pump shafts 2), and the keyway 202 is processed on the tapered end 201 of the pump shaft 2. After processing to a certain depth, the milling machine processing table 1 is raised to a corresponding height. At this time, during the rising process of the distal end of the pump shaft 2, the compression spring 805 is reset and is always in a compressed state, and the distal end of the pump shaft 2 is always against the vertical end of the baffle 6, thereby meeting the processing requirements for the special-shaped pump shaft 2.

Claims

1. A special-shaped pump shaft keyway milling fixture, characterized in that: It includes a proximal support seat, a distal support seat, a baffle and a pressure plate. The proximal support seat is fixed on a milling machine processing table, and the surface of the proximal support seat has a first support groove that matches the tapered end of the pump shaft, the surface of the pressure plate has a pressure groove that matches the proximal end of the pump shaft, and the pressure plate is connected to the milling machine processing table via a connecting rod, the baffle and the distal support seat are located on a support frame outside the milling machine processing table, the baffle has a rear abutment portion for abutting the distal end of the pump shaft, the distal support seat is connected to the support frame via an elastic adjustment member, and the surface of the distal support seat has a second support groove that matches the distal end of the pump shaft.

2. The special-shaped pump shaft keyway milling fixture according to claim 1 is characterized in that: The elastic adjustment member includes a guide column, an adjustment screw, an adjustment seat and a compression spring. The guide column is fixedly installed at the bottom of the distal support seat. The adjustment screw is installed on the support frame through a driving nut, and the upper end of the adjustment screw is fixedly connected to the adjustment seat. Guide holes for vertical sliding of the guide column are provided at both ends of the adjustment seat. The compression spring is sleeved on the guide column between the distal support seat and the adjustment seat.

3. The special-shaped pump shaft keyway milling fixture according to claim 1 or 2, characterized in that: The first supporting groove and the second supporting groove are V-shaped grooves.

4. The special-shaped pump shaft keyway milling fixture according to claim 1 or 2, characterized in that: A connecting plate is fixed on the pressing plate, one end of the connecting rod passes through the connecting plate and is connected to the connecting nut, and a sliding block is fixed on the other end of the connecting rod, and the sliding block is slidably connected to a T-shaped slide rail on the surface of the milling machine processing table.

5. The special-shaped pump shaft keyway milling fixture according to claim 1 or 2, characterized in that: The baffle is an L-shaped baffle, the vertical end of the L-shaped baffle is the rear abutment portion, and the horizontal end of the L-shaped baffle is adjustably mounted on the support frame via a horizontal adjustment member.

6. The special-shaped pump shaft keyway milling fixture according to claim 5, characterized in that: The horizontal adjustment member includes an adjustment bolt and an adjustment nut. A strip hole with the same sliding direction as the T-shaped slide rail is opened on the horizontal end of the L-shaped baffle. The adjustment bolt passes through the through hole of the support frame and the strip hole of the L-shaped baffle in sequence and is connected to the adjustment nut.

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