Fixture for positioning and machining inclined hole of valve body

Abstract

The utility model relates to a clamp for positioning and processing an inclined hole of a valve body, and belongs to clamps for positioning and processing inclined holes of mechanical products. The supporting assembly and the indexing vertical plate are fixedly connected with the two ends of the upper surface of the bottom plate respectively, the indexing rotating vertical plate is rotationally connected with the indexing vertical plate through the shaft pin assembly, the long positioning pin is used for positioning the indexing rotating vertical plate and the indexing vertical plate, and the rotating bottom plate is fixedly connected to the supporting assembly and the indexing rotating vertical plate. The positioning plate assembly is fixedly connected to the rotary bottom plate, and the workpiece fixing device is installed on the rotary bottom plate and the positioning plate assembly. The clamp has the advantages that the clamp is novel in structure, compact, practical, accurate and reliable in indexing and positioning and rapid in adjustment, rotation at any angle in the vertical direction by taking 1 degree as a unit can be achieved, indexing and positioning can be rapidly achieved by matching with the requirement of the angle in the horizontal direction, rapid adjustment and switching can be achieved, the adjustment time is greatly shortened, and the production efficiency is improved. And the production efficiency and the trial-manufacturing capability of new products are greatly improved.

Description

Technical Field

[0001] This utility model relates to fixtures for positioning and machining oblique holes in mechanical products, and more particularly to a fixture for positioning and machining oblique holes in valve bodies. Background Technology

[0002] Currently, in the field of mechanical manufacturing, some products often have oblique holes on a certain plane that need to be machined. These oblique holes have different angles, and their directions are not all in the same direction at the same time. For example, a valve body part in an automotive braking system requires many hydraulic flow channels to meet its functional requirements. Due to the compact structure and numerous flow channels, oblique holes are needed to connect the flow channels to ensure that they are identical. Due to the characteristics of oblique holes and the conditions of the machining equipment, when machining with a three-axis machining center or a bench drill, it is necessary to design a positioning and clamping fixture that can adapt to oblique holes of different angles and directions. This fixture can be used for positioning and clamping when machining oblique holes on a plane. When a product has oblique holes of different directions or angles that need to be machined on a plane, this fixture can be used for indexing and positioning, and then the machining center or bench drill can be used to machine the holes. Summary of the Invention

[0003] This utility model provides a fixture for positioning and machining oblique holes in valve bodies. The purpose is to provide a mechanism that enables positioning and rotation at any angle, so that the oblique hole of the workpiece is in the vertical direction to complete the machining of the oblique hole. It can be used for machining position requirements at different angles. Using this mechanism, one set of mechanisms can be adapted to the machining of all similar structural products.

[0004] The technical solution adopted by this utility model includes a base plate, a support assembly, a pin assembly, a workpiece fixing device, an indexing rotating plate, an indexing plate, a rotating base plate, a positioning plate assembly, and a long positioning pin. The support assembly and the indexing plate are fixedly connected to the two ends of the upper surface of the base plate, respectively. The indexing rotating plate is rotatably connected to the indexing plate through the pin assembly. The long positioning pin is used to position the indexing rotating plate and the indexing plate. The rotating base plate is fixedly connected to the support assembly and the indexing rotating plate. The positioning plate assembly is fixedly connected to the rotating base plate. The workpiece fixing device is installed on the rotating base plate and the positioning plate assembly.

[0005] The support assembly includes a rotating upright plate, a first shaft pin, a first locking bolt, a first washer, and a support upright plate. The lower end of the support upright plate is fixedly connected to the base plate. The first shaft pin passes through the rotating upright plate and the support upright plate from the inside. The first locking bolt passes through the first washer from the outside and is threadedly connected to the threaded hole of the first shaft pin.

[0006] The pin assembly includes a second pin, a second locking bolt, and a second washer. The second pin passes through the indexing rotating plate body and the indexing plate body of the indexing rotating plate from the inside, and the second locking bolt is threaded to the threaded hole of the second pin from the outside through the second washer.

[0007] The workpiece fixing device includes a locking plate, a pressure plate, and a long bolt, wherein the long bolt passes through the pressure plate and its lower end is threadedly connected to the locking plate.

[0008] The indexing rotating plate includes indexing rotating plate positioning holes, indexing rotating plate indexing lines, indexing rotating plate reference lines, and an indexing rotating plate body. There are 36 indexing rotating plate positioning holes evenly distributed at 10° intervals on the outer surface of the indexing rotating plate body. There are 19 indexing rotating plate indexing lines above the horizontal line of the indexing rotating plate positioning holes. The middle line of the indexing rotating plate indexing lines is the indexing rotating plate reference line.

[0009] The indexing plate includes indexing plate positioning holes, indexing plate engravings, reference engravings, and an indexing plate body. The indexing plate body has 11 indexing plate engravings on its arc surface. The front surface of the indexing plate body corresponding to the engraving positions has 11 arc-shaped indexing plate positioning through holes spaced at 11° intervals. The middle engraving is the reference engraving, and the line connecting the corresponding indexing plate positioning through hole and the arc center is perpendicular to the horizontal plane. When an indexing plate positioning hole and an indexing rotary plate positioning hole are aligned, a long positioning pin is passed through the corresponding aligned indexing plate positioning hole and indexing rotary plate positioning hole to complete the indexing positioning of the indexing rotary plate and the indexing plate.

[0010] The rotating base plate includes a threaded hole, a first positioning hole, a bolt countersunk hole, a second positioning hole, and a rotating base plate body. The threaded hole, the first positioning hole, the bolt countersunk hole, and the second positioning hole are located on the rotating base plate body. The bolt countersunk hole is used to connect to the upper part of the rotating upright plate and the indexing rotating upright plate of the supporting upright plate assembly with bolts. The second positioning hole is used to rotatably connect with the positioning boss in the positioning plate. The first positioning hole is evenly distributed in four equal parts around the circumference of the second positioning hole. The first positioning hole and the third positioning hole on the positioning plate are positioned by short positioning pins. The threaded hole is locked to the through hole of the positioning plate with bolts.

[0011] The positioning plate assembly includes positioning hole three, through hole, positioning boss, positioning plate body, diamond positioning pin, bolt and short positioning pin. The short positioning pin is positioned through positioning hole three and positioning hole one on the rotating base plate. The positioning boss is rotatably connected to positioning hole two on the rotating base plate. The bolt locks the body and the rotating base plate body through the through hole and the threaded hole on the rotating base plate. The two diamond positioning pins are respectively installed on the positioning plate body.

[0012] The indexing rotating plate and both sides of the rotating plate are fixedly connected to the connecting plate.

[0013] The advantages of this utility model are: novel and compact structure, accurate and reliable indexing and positioning, and rapid adjustment. This fixture can achieve rotation at any angle in the vertical direction in 1° units, and can quickly achieve indexing and positioning in accordance with the needs of the horizontal direction angle. It can realize rapid adjustment and switching, greatly reducing the adjustment time. It plays a significant role in improving production efficiency and the ability to trial-produce new products. It has low manufacturing cost, is easy to manage, and can replace a large number of fixtures required by traditional indexing and positioning methods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is the front view of this utility model;

[0016] Figure 3 yes Figure 2 AA section view;

[0017] Figure 4 This is a top view of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the rotating base plate of this utility model;

[0019] Figure 6 yes Figure 5 BB cross-sectional view;

[0020] Figure 7 This is a structural schematic diagram of the positioning plate assembly of this utility model;

[0021] Figure 8 yes Figure 7 CC section view;

[0022] Figure 9 This is a schematic diagram of the indexing rotating vertical plate of this utility model;

[0023] Figure 10 This is a schematic diagram of the indexing plate of this utility model;

[0024] Figure 11 This is a schematic diagram of the workpiece structure in an embodiment of this utility model;

[0025] Figure 12 This is a top view of the workpiece in an embodiment of this utility model;

[0026] Figure 13 yes Figure 12 DD sectional view;

[0027] Figure 14 yes Figure 12 EE sectional view;

[0028] Figure 15 This is a bottom view of the workpiece in an embodiment of this utility model;

[0029] Figure 16 This is a schematic diagram of the workpiece during processing in an embodiment of this utility model;

[0030] Figure 17 This is a schematic diagram of the workpiece of this utility model at a 20° position;

[0031] Figure 18 yes Figure 17 Enlarged view of Part I;

[0032] Figure 19 This is a schematic diagram of the workpiece of this utility model being adjusted to the 6° position. Detailed Implementation

[0033] See Figure 1 , 2 The system includes a base plate 1, a support assembly 2, a pin assembly 3, a workpiece fixing device 4, an indexing rotating vertical plate 5, an indexing vertical plate 6, a rotating base plate 7, a positioning plate assembly 8, and a long positioning pin 9. The support assembly 2 and the indexing vertical plate 6 are fixedly connected to the two ends of the upper surface of the base plate 1, respectively. The indexing rotating vertical plate 5 is rotatably connected to the indexing vertical plate 6 through the pin assembly 3. The long positioning pin 9 is used to position the indexing rotating vertical plate 5 and the indexing vertical plate 6. The rotating base plate 7 is fixedly connected to the support assembly 2 and the indexing rotating vertical plate 5. The positioning plate assembly 8 is fixedly connected to the rotating base plate 7. The workpiece fixing device 4 is installed on the rotating base plate 7 and the positioning plate assembly 8.

[0034] See Figure 3 The support assembly 2 includes a rotating upright plate 201, a shaft pin 202, a locking bolt 203, a washer 204, and a support upright plate 205. The lower end of the support upright plate 205 is fixedly connected to the base plate 1. The shaft pin 202 passes through the rotating upright plate 201 and the support upright plate 205 from the inside. The locking bolt 203 passes through the washer 204 from the outside and is threadedly connected to the threaded hole of the shaft pin 202.

[0035] See Figure 3 The pin assembly 3 includes a second pin 301, a second locking bolt 302, and a second washer 303. The second pin 301 passes through the indexing rotating plate body 504 of the indexing rotating plate 5 and the indexing plate body 604 of the indexing plate 6 from the inside. The second locking bolt 302 is threaded into the threaded hole of the second pin 301 from the outside through the second washer 303. After the indexing rotating plate 5 and the indexing plate 6 are fixed in position with the long locating pin 9, the second locking bolt 302 is tightened, and the second pin 301 and the second washer 303 lock the indexing rotating plate 5 and the indexing plate 6, thereby completing the indexing positioning.

[0036] See Figure 3The workpiece fixing device 4 includes a locking plate 401, a pressure plate 402 and a long bolt 403, wherein the long bolt 403 passes through the pressure plate 402 and its lower end is threadedly connected to the locking plate 401.

[0037] See Figure 9 The indexing rotating plate 5 includes indexing rotating plate positioning holes 501, indexing rotating plate indexing lines 502, indexing rotating plate reference lines 503, and indexing rotating plate body 504. There are 36 indexing rotating plate positioning holes 501 evenly distributed at 10° intervals on the outer surface of the indexing rotating plate body 504. There are 19 indexing rotating plate indexing lines 502 above the horizontal line of the indexing rotating plate positioning holes 501. The middle line of the indexing rotating plate indexing lines 502 is the indexing rotating plate reference lines 503.

[0038] See Figure 10 The indexing plate 6 includes an indexing plate positioning hole 601, an indexing plate engraving line 602, a reference engraving line 603, and an indexing plate body 604. The indexing plate body 604 has 11 indexing plate engraving lines 602 engraved on its arc surface. The front surface of the indexing plate body 604 corresponding to the engraving line position has 11 arc-shaped indexing plate positioning through holes 601 spaced at 11° intervals. The middle engraving line of the engraving line 602 is the reference engraving line 603, and the line connecting the corresponding indexing plate positioning through hole 601 and the arc center is perpendicular to the horizontal plane. When a certain indexing plate positioning hole 601 and a certain indexing rotating plate positioning hole 501 are aligned, a long positioning pin 9 is passed through the corresponding aligned indexing plate positioning hole 601 and indexing rotating plate positioning hole 601 to complete the indexing positioning of the indexing rotating plate 5 and the indexing plate 6. By using different positional combinations between the indexing rotating plate 5 and the indexing plate 6, indexing positioning at any angle in units of 1° can be achieved.

[0039] See Figure 5 , 6 The rotating base plate 7 includes a threaded hole 701, a first positioning hole 702, a bolt countersunk hole 703, a second positioning hole 704, and a rotating base plate body 705. The threaded hole 701, the first positioning hole 702, the bolt countersunk hole 703, and the second positioning hole 704 are located on the rotating base plate body 705. The bolt countersunk hole 703 is used to connect to the upper part of the rotating upright plate 201 and the indexing rotating upright plate 5 of the supporting upright plate assembly 2 with bolts. The second positioning hole 704 is used to rotatably connect with the positioning boss 803 in the positioning plate 8. The first positioning hole 702 is evenly distributed in four equal parts around the circumference of the second positioning hole 704. The first positioning hole 702 is positioned with the third positioning hole 801 on the positioning plate 8 using a short positioning pin 807. The threaded hole 701 is locked with the through hole 802 of the positioning plate 8 using a bolt 806.

[0040] See Figure 3 , 4 7, 8. The positioning plate assembly 8 includes a third positioning hole 801, a through hole 802, a positioning boss 803, a positioning plate body 804, a diamond-shaped positioning pin 805, a bolt 806, and a short positioning pin 807. The short positioning pin 807 is positioned through the third positioning hole 801 and the first positioning hole 702 on the rotating base plate 7. The positioning boss 803 is rotatably connected to the second positioning hole 704 on the rotating base plate 7, and the two can rotate. The bolt 806 locks the body 804 and the rotating base plate body 705 of the rotating base plate 7 through the through hole 802 and the threaded hole 701 on the rotating base plate 7. The two diamond-shaped positioning pins 805 are respectively installed on the positioning plate body 804 for positioning the workpiece.

[0041] See Figure 1 The indexing rotating plate 5 and the rotating plate 201 are respectively fixedly connected to the connecting plate 10 on both sides.

[0042] Working principle:

[0043] The method of using this fixture is described using a valve body workpiece 11 of a certain model as an example. (See also...) Figure 11 The valve body component 11 is a simplified schematic structure, see [reference]. Figure 12 There is a 6° oblique hole 1103 on the upper surface 1105 of workpiece 11 (see...) Figure 14 ) and 20° inclined hole 1104 (see Figure 13 To machine this angled hole, drilling must be performed on a vertical machining center (or using a drilling machine with a locating drill bushing). Therefore, the angled hole must be in a vertical position before machining. See also... Figure 15 There are two positioning holes 1101 on the lower surface 1102 of workpiece 11.

[0044] Assuming the initial state of each indexing line during fixture adjustment is arbitrary, first pull out the long locating pin 9 and the short locating pin 807, loosen the locking bolts 302 and 806, align the two locating holes 1101 on the workpiece 11 with the two diamond-shaped locating pins 805 on the locating plate 8, and install the workpiece 11 on the locating plate 8. Figure 16 At the indicated positions, the short locating pin 807 is inserted into the corresponding locating hole 801 on the locating plate 8 and the locating hole 702 on the rotating base plate. The locating plate 8 is then locked to the rotating base plate 7 using bolts 806. The workpiece 11 is clamped using long bolts 403 through the pressure plate 402 and the locking plate 401.

[0045] Then, manually rotate the indexing rotating plate 5 to align the reference scale line 603 on the indexing plate 6 with the scale line U in the indexing line 502 on the indexing rotating plate 5. The indexing rotating plate 5 rotates the workpiece by 20°. Insert the long locating pin 9 into the F hole in the indexing locating hole 601 on the indexing plate 6 and the U hole in the locating hole 501 on the indexing rotating plate 5. Tighten the locking bolt 302. See below. Figure 17 , 18 With the 20° angled hole in a vertical position, the 1104 angled hole can now be machined.

[0046] When machining a 6° inclined hole 1103, first pull out the long locating pin 9 and the short locating pin 807, loosen the locking bolts 302 and 806, rotate the locating plate 8, and rotate the workpiece 10 together by 90° so that the workpiece 10 is in the correct position. Figure 19 Positioning: Insert the short positioning pin 807 into the positioning hole 3 801 on the corresponding positioning plate 8 and the positioning hole 1 702 on the rotating base plate. Use bolts 806 to lock the positioning plate 8 to the rotating base plate 7. Use long bolts 403 to clamp the workpiece 11 through the pressure plate 402 and the locking plate 401.

[0047] Then, manually rotate the indexing rotating plate 5 to align the engraving line T on the indexing rotating plate 5 with the reference engraving line 603 on the indexing plate 6. Then rotate the indexing rotating plate 5 in the opposite direction to align the N hole on the indexing rotating plate 5 with the B hole on the indexing plate 6. In this way, the indexing rotating plate 5 actually drives the workpiece to rotate 6°, insert the long positioning pin 9, and lock the locking bolt 302. The 6° inclined hole 1103 is in a vertical position and can be machined into an inclined hole.

[0048] Similarly, when there are oblique holes of other angles machined on the surface of valve body parts, this method can be used to adjust the indexing and positioning to meet the needs of clamping, positioning or production processing.

Claims

1. A fixture for positioning and machining oblique holes in valve bodies, characterized in that: It includes a base plate, a support assembly, a pin assembly, a workpiece fixing device, an indexing rotating vertical plate, an indexing vertical plate, a rotating base plate, a positioning plate assembly, and a long positioning pin. The support assembly and the indexing vertical plate are fixedly connected to the two ends of the upper surface of the base plate, respectively. The indexing rotating vertical plate is rotatably connected to the indexing vertical plate through the pin assembly. The long positioning pin is used to position the indexing rotating vertical plate and the indexing vertical plate. The rotating base plate is fixedly connected to the support assembly and the indexing rotating vertical plate. The positioning plate assembly is fixedly connected to the rotating base plate. The workpiece fixing device is installed on the rotating base plate and the positioning plate assembly.

2. The fixture for positioning and machining oblique holes in valve bodies according to claim 1, characterized in that: The support assembly includes a rotating upright plate, a first shaft pin, a first locking bolt, a first washer, and a support upright plate. The lower end of the support upright plate is fixedly connected to the base plate. The first shaft pin passes through the rotating upright plate and the support upright plate from the inside. The first locking bolt passes through the first washer from the outside and is threadedly connected to the threaded hole of the first shaft pin.

3. The fixture for positioning and machining oblique holes in valve bodies according to claim 1, characterized in that: The pin assembly includes a second pin, a second locking bolt, and a second washer. The second pin passes through the indexing rotating plate body and the indexing plate body of the indexing rotating plate from the inside, and the second locking bolt is threaded to the threaded hole of the second pin from the outside through the second washer.

4. The fixture for positioning and machining oblique holes in valve bodies according to claim 1, characterized in that: The workpiece fixing device includes a locking plate, a pressure plate, and a long bolt, wherein the long bolt passes through the pressure plate and its lower end is threadedly connected to the locking plate.

5. A fixture for positioning and machining oblique holes in a valve body according to claim 1, characterized in that: The indexing rotating plate includes indexing rotating plate positioning holes, indexing rotating plate indexing lines, indexing rotating plate reference lines, and an indexing rotating plate body. There are 36 indexing rotating plate positioning holes evenly distributed at 10° intervals on the outer surface of the indexing rotating plate body. There are 19 indexing rotating plate indexing lines above the horizontal line of the indexing rotating plate positioning holes. The middle line of the indexing rotating plate indexing lines is the indexing rotating plate reference line.

6. A fixture for positioning and machining oblique holes in a valve body according to claim 1, characterized in that: The indexing plate includes indexing plate positioning holes, indexing plate engravings, reference engravings, and an indexing plate body. The indexing plate body has 11 indexing plate engravings on its arc surface. The front surface of the indexing plate body corresponding to the engraving positions has 11 arc-shaped indexing plate positioning through holes spaced at 11° intervals. The middle engraving is the reference engraving, and the line connecting the corresponding indexing plate positioning through hole and the arc center is perpendicular to the horizontal plane. When an indexing plate positioning hole and an indexing rotary plate positioning hole are aligned, a long positioning pin is passed through the corresponding aligned indexing plate positioning hole and indexing rotary plate positioning hole to complete the indexing positioning of the indexing rotary plate and the indexing plate.

7. A fixture for positioning and machining oblique holes in a valve body according to claim 1, characterized in that: The rotating base plate includes a threaded hole, a first positioning hole, a bolt countersunk hole, a second positioning hole, and a rotating base plate body. The threaded hole, the first positioning hole, the bolt countersunk hole, and the second positioning hole are located on the rotating base plate body. The bolt countersunk hole is used to connect to the upper part of the rotating upright plate and the indexing rotating upright plate of the supporting upright plate assembly with bolts. The second positioning hole is used to rotatably connect with the positioning boss in the positioning plate. The first positioning hole is evenly distributed in four equal parts around the circumference of the second positioning hole. The first positioning hole and the third positioning hole on the positioning plate are positioned by short positioning pins. The threaded hole is locked to the through hole of the positioning plate with bolts.

8. A fixture for positioning and machining oblique holes in a valve body according to claim 1, characterized in that: The positioning plate assembly includes positioning hole three, through hole, positioning boss, positioning plate body, diamond positioning pin, bolt and short positioning pin. The short positioning pin is positioned through positioning hole three and positioning hole one on the rotating base plate. The positioning boss is rotatably connected to positioning hole two on the rotating base plate. The bolt locks the body and the rotating base plate body through the through hole and the threaded hole on the rotating base plate. The two diamond positioning pins are respectively installed on the positioning plate body.

9. A fixture for positioning and machining oblique holes in a valve body according to claim 1, characterized in that: The indexing rotating plate and both sides of the rotating plate are fixedly connected to the connecting plate.

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