Tool for boring shaft hole of valve body of ball valve

Abstract

The utility model relates to a boring ball valve body shaft hole tool. The boring ball valve body shaft hole tool comprises a bottom plate, a screw rod, a pressing plate, a first locking nut, a positioning block, a supporting seat, an angle limiting block, an adjusting screw, a second locking nut, a sliding block, a flat end set screw, a pin shaft and a clamping block. A positioning block supporting plane, a positioning block positioning arc side surface and a positioning block guiding arc surface are arranged on the positioning block; an adjusting screw operation hole is formed in the supporting seat, an adjusting screw hole is formed in each vertical arm, an adjusting screw is mounted in each adjusting screw hole, and a second locking nut is mounted on one adjusting screw; a dovetail groove is formed in the side face of the supporting seat, and a supporting seat upper half threaded hole is formed in the groove bottom of the dovetail groove. A trapezoidal guide rail is arranged on the sliding block, and a semi-cylindrical inner cavity is formed in the bottom of the trapezoidal guide rail. The clamp is firm in clamping, easy to disassemble and convenient to adjust, and improves product machining quality and production efficiency.

Description

Technical Field

[0001] The utility model relates to a clamping fixture for a ball valve body, and specifically discloses a tool for boring an axial hole of a ball valve body. Background Art

[0002] A ball valve is a valve whose opening and closing part (valve ball) is driven by a valve stem and can rotate around the axis of the ball valve. It is mainly composed of a left valve body, a right valve body, a valve ball, a valve seat, a valve stem, etc. Among them, the processing and clamping of the right valve body is particularly difficult. The traditional clamping method mainly uses a three-claw chuck to support the flow channel hole. This clamping method has the following main defects:

[0003] 1. The three-jaw chuck has high cost and high use cost;

[0004] 2. The chip removal effect of the three-jaw chuck is poor, and iron chips are easily stuck in the chuck, making maintenance difficult;

[0005] 3. The parallelism of the installed parts is poor, and the parts need to be corrected every time they are installed, which is inefficient;

[0006] 4. The space of the three-claw chuck is small, and it is inconvenient to install the auxiliary pressure plate;

[0007] 5. The plane of the right valve body bracket extends too long, and vibration will occur when processing the end face of the bracket, affecting product quality. Summary of the invention

[0008] The utility model aims to overcome the shortcomings in the prior art and provide a tool for boring the shaft hole of a ball valve body, which has the advantages of reliable clamping, simple disassembly, good chip removal effect and convenient adjustment.

[0009] According to the technical solution provided by the utility model, the boring tool for the shaft hole of the ball valve body includes a base plate, a screw, a pressure plate, a first locking nut, a positioning block, a support seat, an angle limit block, an adjustment screw, a second locking nut, a slider, a flat end set screw, a pin and a clamping block;

[0010] A screw is fixed on the bottom plate, the axis of the screw is arranged perpendicular to the plane where the bottom plate is located, a pressing plate is installed on the screw, and a first locking nut is installed on the screw located above the pressing plate;

[0011] A plurality of positioning blocks are fixed on the upper surface of the bottom plate, and the positioning blocks are arranged around the screw rod. The positioning blocks are provided with a positioning block support plane, a positioning block positioning arc side surface and a positioning block guide arc surface. A positioning block positioning arc side surface is provided above the positioning block support plane, and the center of the positioning block positioning arc side surface is located on the axis of the screw rod;

[0012] Two support seats are fixed on the upper surface of the base plate, and an adjustment screw operation hole is provided on each support seat. An angle limit block is fixed on the upper surface of the base plate between the two support seats. The angle limit block is U-shaped, and the angle limit block includes a strip base and vertical arms fixed at both ends of the strip base. An adjustment screw hole is provided on each vertical arm, and the adjustment screw hole corresponds to the adjustment screw operation hole. An adjustment screw is installed in the adjustment screw hole. The axial direction of the adjustment screw is parallel to the upper surface of the base plate. The two adjustment screws are coaxially arranged, and a second locking nut is installed on one of the adjustment screws.

[0013] A dovetail groove is provided on the side of the support seat, the length direction of the dovetail groove is parallel to the axial direction of the adjustment screw, and an upper threaded hole of the support seat is provided on the bottom of the dovetail groove;

[0014] A trapezoidal guide rail is provided on the slide block, a semi-cylindrical inner cavity is provided at the bottom of the trapezoidal guide rail, and the trapezoidal guide rail is embedded in the dovetail groove, and the trapezoidal guide rail and the dovetail groove are in clearance fit;

[0015] One half of the flat-end set screw engages with the upper threaded hole of the support seat, and the other half of the flat-end set screw is located in the semi-cylindrical inner cavity, and the axial direction of the flat-end set screw is parallel to the axial direction of the adjustment screw;

[0016] The clamping block is hingedly installed on each of the sliding blocks through a pin and an elastic retaining ring. The axial direction of the pin is parallel to the upper surface of the base plate, and the axial direction of the pin is perpendicular to the axial direction of the adjusting screw. The two clamping blocks cooperate with each other.

[0017] Preferably, 3 to 5 positioning blocks are fixed on the upper surface of the base plate.

[0018] Preferably, a positioning block guide arc surface is provided on the positioning block corresponding to the upper side of the positioning arc of the positioning block, and the center of the positioning block guide arc surface is located on the axis of the screw.

[0019] Preferably, a clamping block limiting block is provided on the sliding block corresponding to the back of the clamping block.

[0020] The utility model has reliable clamping, simple disassembly and convenient adjustment, thus improving product processing quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the front view of the utility model.

[0022] Figure 2 It is a left view of the utility model.

[0023] Figure 3 It is a top view of the utility model.

[0024] Figure 4 It is a stereogram of the utility model.

[0025] Figure 5 It is the front view of the positioning block in the utility model.

[0026] Figure 6 It is a top view of the positioning block in the utility model.

[0027] Figure 7 It is the front view of the support seat in the utility model.

[0028] Figure 8 It is a bottom view of the support seat in the utility model.

[0029] Fig. 9 It is a top view of the angle limiting block in the utility model.

[0030] Fig.10 yes Fig. 9 AA section view.

[0031] Fig.11 It is a top view of the slider in the utility model.

[0032] Fig.12 yes Fig.11 BB cross-sectional view.

[0033] Fig.13 It is a three-dimensional diagram of the use state of the utility model.

[0034] Fig.14 It is a top view of the utility model in use state.

[0035] Fig.15 yes Fig.14 CC cross-sectional view. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with specific embodiments.

[0037] A tool for boring the shaft hole of a ball valve body, such as Figure 1-4 As shown, it includes a base plate 1, a screw rod 2, a pressure plate 3, a first locking nut 4, a positioning block 5, a support seat 6, an angle limit block 7, an adjustment screw 8, a second locking nut 9, a slider 10, a flat-end set screw 11, a pin 12 and a clamping block 13;

[0038] A screw rod 2 is fixed on the bottom plate 1, the axis of the screw rod 2 is arranged perpendicular to the plane where the bottom plate 1 is located, a pressing plate 3 is installed on the screw rod 2, and a first locking nut 4 is installed on the screw rod 2 located above the pressing plate 3;

[0039] A plurality of positioning blocks 5 (such as Figure 5 and Figure 6 As shown in the figure, the positioning block 5 is arranged around the screw rod 2, and a positioning block support plane 5.1, a positioning block positioning arc side surface 5.2 and a positioning block guide arc surface 5.3 are provided on the positioning block 5, and a positioning block positioning arc side surface 5.2 is provided above the positioning block support plane 5.1, and the center of the positioning block positioning arc side surface 5.2 is located on the axis of the screw rod 2;

[0040] Two support seats 6 (such as Figure 7 and Figure 8 As shown in FIG. 1 ), each support seat 6 is provided with an adjustment screw operation hole 6.1, and an angle limit block 7 (as shown in FIG. 1 ) is fixed on the upper surface of the bottom plate 1 between the two support seats 6. Fig. 9 and Fig.10 As shown in the figure, the angle limit block 7 is U-shaped, and the angle limit block 7 comprises a strip base 7.1 and vertical arms 7.2 fixed at both ends of the strip base 7.1, and an adjustment screw hole 7.21 is opened on each vertical arm 7.2, and the adjustment screw hole 7.21 corresponds to the adjustment screw operation hole 6.1, and an adjustment screw 8 is installed in the adjustment screw hole 7.21, and the axial direction of the adjustment screw 8 is parallel to the upper surface of the base plate 1, and the two adjustment screws 8 are coaxially arranged, and a second locking nut 9 is installed on one of the adjustment screws 8;

[0041] A dovetail groove 6.2 is provided on the side of the support seat 6, the length direction of the dovetail groove 6.2 is arranged parallel to the axial direction of the adjustment screw 8, and a support seat upper threaded hole 6.3 is provided on the bottom of the dovetail groove 6.2;

[0042] In the slider 10 (such as Fig.11 and Fig.12 As shown in FIG. 1 , a trapezoidal guide rail 10.1 is provided on the bottom of the trapezoidal guide rail 10.1, and a semi-cylindrical inner cavity 10.2 is provided. The trapezoidal guide rail 10.1 is embedded in the dovetail groove 6.2, and the trapezoidal guide rail 10.1 and the dovetail groove 6.2 are in clearance fit;

[0043] One half of the flat-end set screw 11 engages with the upper threaded hole 6.3 of the support seat, and the other half of the flat-end set screw 11 is located in the semi-cylindrical inner cavity 10.2. The axial direction of the flat-end set screw 11 is parallel to the axial direction of the adjustment screw 8.

[0044] The clamping block 13 is hingedly mounted on each of the sliders 10 via a pin 12 and an elastic retaining ring on the shaft. The axial direction of the pin 12 is parallel to the upper surface of the base plate 1, and the axial direction of the pin 12 is perpendicular to the axial direction of the adjusting screw 8. The two clamping blocks 13 cooperate with each other.

[0045] Three to five positioning blocks 5 are fixed on the upper surface of the base plate 1 .

[0046] A positioning block guide arc surface 5.3 is provided on the positioning block 5 corresponding to the upper side of the positioning block positioning arc side surface 5.2, and the center of the positioning block guide arc surface 5.3 is located on the axis of the screw rod 2.

[0047] A clamping block limiting block 10.3 is provided on the sliding block 10 corresponding to the back of the clamping block 13.

[0048] When assembling the utility model, the support seat 6 is placed on the bottom plate 1 and fixed with screws. The pin 12 is inserted into the through hole of the slider 10 and the through hole of the clamping block, and the shaft elastic ring is installed into the groove of the pin 12 using a circlip pliers. The flat-end set screw 11 (using a hexagon socket head screw) is installed into the semi-cylindrical inner cavity 10.2, and the trapezoidal guide rail 10.1 of the slider 10 is embedded in the dovetail groove 6.2. The flat-end set screw 11 is screwed in with a hexagon socket wrench to ensure that the slider 10 is completely embedded in the dovetail groove 6.2.

[0049] Place the angle limit block 7 on the base plate 1 and fix it with screws. Pass the adjusting screw 8 through the adjusting screw operating hole 6.1 and screw it into the adjusting screw hole 7.21. Screw the second locking nut 9 onto one of the adjusting screws 8.

[0050] Place the positioning block 5 on the base plate 1 and fix it with screws.

[0051] An inner hole is provided on the ball valve body 100 , and the positioning block 5 is installed according to the inner hole of the ball valve body 100 .

[0052] Screw the adjusting screw 8 without the second locking nut 9 installed to the appropriate position, place the pressure plate 3, lock the first locking nut 4, lock the adjusting screw 8 and the second locking nut 9, and screw the flat-end set screw 11.

[0053] The working principle of the utility model is as follows:

[0054] like Figure 13-15 As shown, the ball valve body 100 is placed against the positioning block support plane 5.1 of the positioning block 5, the inner hole of the ball valve body 100 is in contact with the positioning block positioning arc side 5.2, and the angle of the ball valve body 100 is adjusted by adjusting the screw 8. Screw on the first locking nut 4 to lock the pressure plate 3, screw on the second locking nut 9 on one side to fix the adjusting screw 8, screw on the other side of the adjusting screw 8 to fix the angle of the ball valve body 100, screw on the flat end set screw 11 to drive the slider 10 and the clamping block 13 to fix the middle head support surface 100.1 of the ball valve body 100 to prevent the ball valve body support surface 100.1 from vibrating during the processing.

Claims

1. A tool for boring the shaft hole of a ball valve body, characterized by: It comprises a base plate (1), a screw rod (2), a pressure plate (3), a first locking nut (4), a positioning block (5), a support seat (6), an angle limit block (7), an adjustment screw (8), a second locking nut (9), a slide block (10), a flat-end set screw (11), a pin (12) and a clamping block (13); A screw rod (2) is fixed on the bottom plate (1), the axis of the screw rod (2) is arranged perpendicular to the plane where the bottom plate (1) is located, a pressure plate (3) is installed on the screw rod (2), and a first locking nut (4) is installed on the screw rod (2) located above the pressure plate (3); A plurality of positioning blocks (5) are fixed on the upper surface of the bottom plate (1), the positioning blocks (5) are arranged around the screw rod (2), a positioning block support plane (5.1), a positioning block positioning arc side surface (5.2) and a positioning block guide arc surface (5.3) are provided on the positioning block (5), a positioning block positioning arc side surface (5.2) is provided above the positioning block support plane (5.1), and the center of the positioning block positioning arc side surface (5.2) is located on the axis of the screw rod (2); Two support seats (6) are fixed on the upper surface of the base plate (1), and each support seat (6) is provided with an adjustment screw operating hole (6.1). An angle limit block (7) is fixed on the upper surface of the base plate (1) between the two support seats (6), and the angle limit block (7) is U-shaped. The angle limit block (7) comprises a strip-shaped base (7.1) and vertical arms (7.2) fixed at both ends of the strip-shaped base (7.1), and each vertical arm (7.2) is provided with an adjustment screw hole (7.21), the adjustment screw hole (7.21) corresponds to the adjustment screw operating hole (6.1), and an adjustment screw (8) is installed in the adjustment screw hole (7.21), the axial direction of the adjustment screw (8) is arranged parallel to the upper surface of the base plate (1), the two adjustment screws (8) are arranged coaxially, and a second locking nut (9) is installed on one of the adjustment screws (8); A dovetail groove (6.2) is provided on the side surface of the support seat (6), the length direction of the dovetail groove (6.2) is arranged parallel to the axial direction of the adjustment screw (8), and an upper threaded hole (6.3) of the support seat is provided on the bottom of the dovetail groove (6.2); A trapezoidal guide rail (10.1) is provided on the slide block (10), a semi-cylindrical inner cavity (10.2) is provided at the bottom of the trapezoidal guide rail (10.1), and the trapezoidal guide rail (10.1) is embedded in the dovetail groove (6.2), and the trapezoidal guide rail (10.1) and the dovetail groove (6.2) are clearance-matched; One half of the flat-end set screw (11) engages with the upper threaded hole (6.3) of the support seat, and the other half of the flat-end set screw (11) is located in the semi-cylindrical inner cavity (10.2), and the axial direction of the flat-end set screw (11) is arranged parallel to the axial direction of the adjustment screw (8); The clamping block (13) is hingedly mounted on each of the slide blocks (10) via a pin shaft (12) and an elastic retaining ring on the shaft. The axis direction of the pin shaft (12) is arranged parallel to the upper surface of the base plate (1), and the axis direction of the pin shaft (12) is arranged perpendicular to the axis direction of the adjustment screw (8). The two clamping blocks (13) cooperate with each other.

2. The tool for boring the shaft hole of a ball valve body according to claim 1, characterized in that: Three to five positioning blocks (5) are fixed on the upper surface of the bottom plate (1).

3. The tooling for boring the shaft hole of a ball valve body according to claim 1 or 2, characterized in that: A positioning block guide arc surface (5.3) is provided on the positioning block (5) above the positioning block positioning arc side surface (5.2), and the center of the positioning block guide arc surface (5.3) is located on the axis of the screw rod (2).

4. The tooling for boring the shaft hole of a ball valve body according to claim 1, characterized in that: A clamping block limiting block (10.3) is provided on the sliding block (10) behind the clamping block (13).

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