Hole drilling fixing device for end of cylindrical part

Abstract

The utility model discloses a kind of cylinder parts end portion hole forming fixing devices, comprising: clamping body, hook head pressing plate, machine tool positioning table, support plate, first positioning pin, second positioning pin;Clamping body includes: bottom plate, small support plate, inclined support plate, small support plate, inclined support plate is connected in the top of bottom plate, two parallel inclined support plates are located in middle part, and multiple small support plates are located on both sides of inclined support plate;Machine tool positioning table is connected at the bottom center of bottom plate, and multiple support plates are respectively connected on multiple inclined support plate threaded holes, and second positioning pin is installed on second positioning pin hole and third positioning pin hole.The utility model can realize once clamping processing cylinder end portion deep hole and bolt via hole, to reduce clamping frequency, ensure coaxiality error, improve processing efficiency, improve product quality.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder barrel processing technology for mining dump trucks, specifically, it relates to a device for fixing holes at the ends of cylindrical parts. Background Technology

[0002] A vertical lathe is a lathe with its spindle axis perpendicular to the horizontal plane and the workpiece mounted on a horizontal rotary table. Vertical lathes are typically used to machine workpieces with large diameters and weights, or those difficult to mount on a horizontal lathe. To meet the need for machining large workpieces, vertical lathes appeared in the United States in 1890. In the 1930s, Germany manufactured an ultra-heavy-duty vertical lathe with a machining diameter of 25.5 meters, capable of machining workpieces weighing up to 350 tons, while the machine itself weighed 1850 tons. The Soviet Union also manufactured vertical lathes with a machining diameter of 26 meters. Vertical lathes come in single-column and double-column types. Small and medium-sized vertical lathes are mostly single-column, while large vertical lathes are mainly double-column, with two vertical tool posts. The workpiece is clamped on the worktable of the vertical lathe, and the main motion, driven by the rotation of the worktable, is fed by the vertical and side tool posts, both of which can feed vertically and horizontally along corresponding guideways. Both types of vertical lathes typically have a turret on the vertical tool post that can hold several sets of tools, thus functioning as a vertical turret lathe. The column or worktable of some vertical lathes can also be made movable to expand the machining diameter range.

[0003] The hydraulic cylinders (steering cylinders) of the steering system of mining dump trucks are usually fixed on the frame to provide power for the steering system. Both ends of the cylinder barrel need to be machined with deep holes and threaded through holes to connect with the end caps. In the existing technology, the cylinder barrel is machined on a vertical lathe. Machining the deep holes and threaded through holes at both ends of the cylinder barrel requires turning the machine around for clamping and alignment, which takes a long time and results in large coaxiality errors. Utility Model Content

[0004] The purpose of this utility model is to provide a device for fixing holes at the ends of cylindrical parts, which can realize the processing of deep holes and bolt holes at the ends of cylinders in one clamping, thereby reducing the number of clamping operations, ensuring coaxiality error, improving processing efficiency, and enhancing product quality.

[0005] To achieve the above objectives, the technical solution used in this utility model is as follows:

[0006] A device for fixing holes at the ends of cylindrical parts includes: a clamping body, a hook pressure plate, a machine tool positioning table, a support plate, a first positioning pin, and a second positioning pin; the clamping body includes: a bottom plate, a small support plate, and an inclined support plate, the small support plate and the inclined support plate being connected to the top of the bottom plate, two parallel inclined support plates being located in the middle, and multiple small support plates being located on both sides of the inclined support plates; the top of the small support plate is provided with a small support threaded hole, and the top of the inclined support plate is provided with multiple inclined support plate threaded holes and a second positioning pin hole; the bottom center of the bottom plate is provided with a central threaded hole, a first positioning pin hole, and a fourth threaded hole, with multiple first positioning pin holes and fourth threaded holes located outside the central threaded hole, the first positioning pin hole being installed with a first positioning pin, and the fourth threaded hole being installed with a sixth screw; the bottom plate is provided with multiple lifting tool threaded holes at the top, and the lifting tool threaded holes are used to install... It is equipped with eye bolts; the hook pressure plate is provided with a bending plate, a hook pressure plate through hole, and a hook pressure plate threaded hole. The hook pressure plate through hole is located between the bending plate and the hook pressure plate threaded hole, and the height of the bending plate is higher than the hook pressure plate through hole; the hook pressure plate through hole is an elongated hole, and a second double-ended stud is installed in the hook pressure plate through hole. The lower end of the second double-ended stud is connected to the threaded hole of the small support plate. The second double-ended studs on both sides of the hook pressure plate through hole are respectively installed with second locking nuts, and a second adjusting screw is installed in the hook pressure plate threaded hole; the machine tool positioning table is connected to the bottom center of the bottom of the bottom plate. The support plate is provided with a support plate through hole and a third positioning pin hole. The third screw passes through the support plate through hole and connects to the threaded hole of the inclined support plate, connecting multiple support plates to multiple inclined support plate threaded holes respectively. The second positioning pin is installed in the second positioning pin hole and the third positioning pin hole.

[0007] Furthermore, the bottom plates on both sides of the inclined support plate are connected to the top of the large support plate, and the large support plate is provided with a large support plate threaded hole. The lower end of the first double-ended stud is connected to the large support plate threaded hole. The flat pressure plate is provided with a flat pressure plate through hole and a flat pressure plate threaded hole. The flat pressure plate through hole is an elongated hole. The flat pressure plate through hole is fitted onto the first double-ended stud. The first double-ended studs on both sides of the flat pressure plate through hole are respectively installed with a first locking nut, and the flat pressure plate threaded hole is installed with a first adjusting screw.

[0008] Furthermore, a spring is installed on the first double-ended stud at the bottom of the through hole of the flat pressure plate, and a spring is installed on the second double-ended stud at the bottom of the through hole of the hook pressure plate.

[0009] Furthermore, the tops of the first and second adjusting screws are provided with star-shaped handles, and flat washers are provided on both sides of the spring.

[0010] Furthermore, a central threaded hole is provided at the bottom center of the bottom plate, and a machine tool positioning table is provided with a machine tool positioning table through hole. The first screw passes through the machine tool positioning table through hole and connects to the central threaded hole.

[0011] Furthermore, the bottom of the bottom plate is provided with multiple support threaded holes, and the set screw truncated cone is provided with a set screw truncated cone through hole. The second screw passes through the set screw truncated cone through hole and connects to the support threaded hole.

[0012] Furthermore, the large support plate, small support plate, inclined support plate, and bottom plate are connected by welding.

[0013] The technical effects of this utility model include:

[0014] This utility model relates to a device for fixing holes at the ends of cylindrical parts. It is used on a horizontal machining center to achieve the machining of cylindrical parts (cylinders) in a single clamping operation. The deep holes and bolt holes at the ends of the cylinders do not require the cylindrical parts to be turned around for clamping and alignment. Only the tool needs to be moved and the angle adjusted, thereby reducing the number of clamping operations for the cylindrical parts. It can ensure the coaxiality of the deep holes and bolt holes at both ends, reduce errors, improve machining efficiency, and enhance product quality.

[0015] This utility model has a simple structure and is easy to use. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the end hole fixing device for cylindrical parts according to this utility model;

[0017] Figure 2 This is a top view of the end hole fixing device for cylindrical parts according to this utility model.

[0018] Figure 3 for Figure 2 A schematic cross-sectional view of the structure along the BB direction;

[0019] Figure 4 This is a schematic diagram of the bottom plate in this utility model. Detailed Implementation

[0020] The following description fully illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce it.

[0021] like Figure 1 The image shown is a front structural schematic diagram of the end hole fixing device for cylindrical parts according to this utility model; as shown... Figure 2 The image shown is a top view of the end-hole fixing device for cylindrical parts according to this utility model; as shown... Figure 3 As shown, Figure 2 A structural sectional view along the BB direction; as shown Figure 4 The diagram shown is a structural schematic of the bottom plate 101 in this utility model.

[0022] A device for fixing holes at the ends of cylindrical parts includes: a clamping body 1, a hook pressure plate 2, a flat pressure plate 3, a machine tool positioning table 4, a set screw frustum 5, a support plate 6, and a first positioning pin 7.

[0023] The clamping body 1 includes: a bottom plate 101, a large support plate 102, a small support plate 103, and an inclined support plate 104. The large support plate 102, the small support plate 103, and the inclined support plate 104 are connected to the top of the bottom plate 101. Two parallel inclined support plates 104 are located in the middle, multiple large support plates 102 are located on both sides of the inclined support plate 104, and multiple small support plates 103 are located on both sides of the inclined support plate 104. The large support plate 102 and the small support plate 103 are respectively provided with large support plate threaded holes and small support threaded holes. The inclined support plate 104 is provided with multiple inclined support plate threaded holes and second positioning pin holes.

[0024] A central threaded hole 105 is provided at the bottom center of the bottom plate 101. Multiple first positioning pin holes 106 are provided at the bottom of the bottom plate 101. The first positioning pin holes 106 are located outside the central threaded hole 105. First positioning pins 7 are installed in the first positioning pin holes 106. Multiple fourth threaded holes are provided at the bottom plate 101. The fourth threaded holes (through holes) are located outside the central threaded hole 105. A sixth screw (four internal hexagon screws) 108 is installed in the fourth threaded hole.

[0025] The bottom plate 101 has multiple lifting tool threaded holes 107 on the top. Lifting eye screws 109 are installed in the lifting tool threaded holes 107. The lifting eye of the lifting eye screw 109 is used to connect the lifting tool. The lifting eye is used to lift and move the end hole fixing device and workpiece 9 of the cylindrical part.

[0026] The large support plate 102, the small support plate 103, the inclined support plate 104 and the bottom plate 101 are connected by welding.

[0027] The top of the inclined support plate 104 is provided with a second positioning pin hole, and a second positioning pin (prism pin) 62 is installed in the second positioning pin hole and the third positioning pin hole. The second positioning pin 62 is used to position the workpiece 9.

[0028] The hook plate 2 is provided with a bent plate 21, a hook plate through hole 22, and a hook plate threaded hole 23. The bent plate 21 is located at the front end, and the hook plate through hole (elongated hole) 22 is located between the bent plate 21 and the hook plate threaded hole 23. The height of the bent plate 21 is higher than that of the hook plate through hole 22. A second double-ended stud 24 is installed in the hook plate through hole 22. The lower end of the second double-ended stud 24 is connected to the threaded hole of the small support plate. Second locking nuts (hexagonal nuts) 25 are installed on the second double-ended studs 24 on both sides of the hook plate through hole 22. A spring 8 is installed on the second double-ended stud 24 at the lower part of the hook plate through hole 22. A second adjusting screw 26 is installed in the hook plate threaded hole 23.

[0029] The second locking nut at the lower part of the second double-ended stud 24 is used to lock the second double-ended stud 24 onto the threaded hole of the small support. The two second locking nuts work together to connect the hook pressure plate 2 to the top of the small support plate 103. The second locking nut and the second adjusting screw 25 at the upper part of the second double-ended stud 24 are used to adjust the tilt of the hook pressure plate 2.

[0030] The flat plate 3 is provided with a flat plate through hole (elongated hole) 31 and a flat plate threaded hole 32. A first double-ended stud 33 is installed in the flat plate through hole 31. The lower end of the first double-ended stud 33 is connected to the threaded hole of the large support. A first locking nut (hexagonal nut) 34 is installed on the first double-ended stud 33 on both sides of the flat plate through hole 31. A spring 8 is installed on the first double-ended stud 33 at the lower part of the flat plate through hole 31. A first adjusting screw 35 is installed in the flat plate threaded hole 32.

[0031] The first locking nut (hexagonal nut) 34 at the lower part of the first double-ended stud 33 is used to lock the first double-ended stud 33 onto the threaded hole of the small support. The two first locking nuts (hexagonal nuts) 34 are used together to connect the flat pressure plate 3 to the top of the large support plate 102. The first locking nut 34 at the upper part of the first double-ended stud 33 is used to adjust the inclination of the flat pressure plate 3.

[0032] The machine tool positioning table 4 is connected to the central threaded hole 105 at the bottom of the base plate 101. The central threaded hole 105 is provided at the center of the bottom of the base plate 101. The machine tool positioning table 4 is provided with a machine tool positioning table through hole. The first screw (hex socket head cap screw) 41 passes through the machine tool positioning table through hole and is connected to the central threaded hole 105, connecting the machine tool positioning table 4 to the base plate 101. The machine tool positioning table 4 is used for positioning on the machine tool's worktable.

[0033] Multiple set screw truncated cones 5 are connected to the bottom of the bottom plate 101. The bottom of the bottom plate 101 is provided with multiple support threaded holes. Each set screw truncated cone 5 is provided with a set screw truncated cone through hole. A second screw (hex socket screw) 51 passes through the set screw truncated cone through hole and is connected to the support threaded hole. The set screw truncated cones 5 are used to adjust the horizontal state of the clamping body 1.

[0034] Multiple support plates 6 are respectively connected to the top of the inclined support plate 104. The support plate 6 is provided with a support plate through hole and a third locating pin hole. The third screw (hex socket screw) 61 passes through the support plate through hole and is connected to the threaded hole of the inclined support plate. The third locating pin hole is used to install the second locating pin (prism pin) 62.

[0035] The first adjusting screw 35 and the second adjusting screw 25 are equipped with star-shaped handles on their tops. Flat washers are provided on both sides of the spring 8. The flat pressure plate through hole 31 and the hook pressure plate through hole (elongated hole) 22 are elongated holes used to adjust the positions of the hook pressure plate 2 and the flat pressure plate 3.

[0036] The specific steps for using the end hole fixing device for cylindrical parts are as follows:

[0037] Step 1: Install multiple support plates 6 and second positioning pins 62 on the inclined support plate 104 on the clamp body 1, and hoist the cylinder 9 onto the support plate 6 and position it using the second positioning pins 62.

[0038] The third screw 61 passes through the through hole of the support plate and connects to the threaded hole of the inclined support plate, fixing multiple support plates 6 to the inclined support plate 104 of the bottom plate 101 respectively; the second positioning pin 62 is inserted into the second positioning pin hole and the third positioning pin hole; the fixing brackets 91 on both sides of the cylinder 9 are provided with multiple bolt holes, the cylinder 9 is hoisted onto the support plate 6, the bolt holes on the fixing brackets are aligned with the second positioning pin 62, and the bolt holes are fitted onto the second positioning pin 62.

[0039] Step 2: Install the first double-ended stud 33 onto the threaded hole of the large support plate 102, install the flat pressure plate 3 onto the first double-ended stud 33, and install the first adjusting screw 35 onto the flat pressure plate 3; adjust the position of the first double-ended stud 33 in the through hole 31 of the flat pressure plate, and adjust the pressing stroke of the flat pressure plate 3 by means of the first locking nut 34, so as to press the flat pressure plate 3 onto the fixed bracket 91;

[0040] The first double-ended stud 33 is installed on the threaded hole of the large support plate 102. The first locking nut 34, spring 8 and flat washer are installed on the first double-ended stud 33. The flat pressure plate through hole 31 of the flat pressure plate 3 is fitted onto the first double-ended stud 33. The first locking nut 34 is installed on the first double-ended stud 33 at the upper part of the flat pressure plate through hole 31. The first adjusting screw 35 is installed on the threaded hole 32 of the flat pressure plate.

[0041] Rotate the first adjusting screw 35 to adjust the tilt of the flat plate 3, and finally tighten the first locking nut 34 to further press the flat plate 3 onto the fixed bracket 91.

[0042] Step 3: Install the second double-ended stud 24 on the small support threaded hole of the small support plate 103, install the hook pressure plate 2 on the second double-ended stud 24, and install the second adjusting screw 26 on the hook pressure plate 2; adjust the position of the second double-ended stud 24 in the through hole 22 of the hook pressure plate, and press the side of the bent plate 21 against the side of the fixed bracket 91. Adjust the pressing stroke of the hook pressure plate 2 by the second locking nut 25, and press the bent plate 21 against the fixed bracket 91.

[0043] The second double-ended stud 24 is installed on the small support threaded hole of the small support plate 103. The second locking nut 25, spring 8, and flat washer are installed on the second double-ended stud 24. The hook pressure plate through hole 22 is fitted on the second double-ended stud 24. The bent plate 21 of the hook pressure plate 2 is aligned with the cylinder 9 side. The second locking nut 25 is installed on the second double-ended stud 24 above the hook pressure plate through hole 22.

[0044] The second adjusting screw 26 is installed on the threaded hole 23 of the hook pressure plate. Rotating the second adjusting screw 26 adjusts the inclination of the small support plate 103, further pressing the bending plate 21 onto the fixed bracket 91.

[0045] Step 4: Connect the machine tool positioning table 4, the set screw frustum 5, and the first positioning pin 7 to the bottom of the bottom plate 101, and connect the eye bolt 109 to the top of the bottom plate 101.

[0046] The first screw 41 passes through the bottom center hole and connects to the center threaded hole 105, connecting the machine tool positioning table 4 to the bottom of the bottom plate 101; the first positioning pin 7 is installed in the first positioning pin hole 106 at the bottom of the bottom plate 101; the second screw 51 passes through the set screw frustum through hole and connects to the support threaded hole, connecting multiple set screw frustums 5 to the bottom of the bottom plate 101 respectively. The eye screw 109 is connected to the lifting tool threaded hole 107 at the top of the bottom plate 101.

[0047] Step 5: After the cylinder 9 is completely fixed, connect the lifting lug to the lifting eye screw 109 of the lifting device, and lift and move the cylinder 9 together with the end hole fixing device of the cylindrical part to the worktable of the horizontal machining center. The machine tool positioning table 4 is installed in the center positioning hole of the worktable, the first positioning pin 7 is installed in the T-slot of the worktable, and the sixth angle screw 108 passes through the connecting through hole of the worktable and connects to the fourth threaded hole to connect the bottom plate 101 to the worktable.

[0048] Adjusting the second screw 51 adjusts the height of the bottom plate 101 by adjusting the set screw truncated cone 5, which serves as an auxiliary positioning function.

[0049] Step 6: Machining the deep hole and bolt through hole at one end of cylinder 9, rotating the tool 180°, and machining the deep hole and bolt through hole at the other end of cylinder 9.

[0050] The terminology used in this invention is descriptive and exemplary, and not restrictive. Since this invention can be embodied in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A device for fixing holes at the ends of cylindrical parts, characterized in that, include: The fixture body includes a hook pressure plate, a machine tool positioning table, a support plate, a first positioning pin, and a second positioning pin. The fixture body comprises a bottom plate, a small support plate, and an inclined support plate. The small support plate and the inclined support plate are connected to the top of the bottom plate. Two parallel inclined support plates are located in the middle, and multiple small support plates are located on both sides of the inclined support plates. The top of the small support plate has small support threaded holes, and the top of the inclined support plates has multiple inclined support plate threaded holes and a second positioning pin hole. The bottom center of the bottom plate has a central threaded hole, a first positioning pin hole, and a fourth threaded hole. Multiple first positioning pin holes and fourth threaded holes are located outside the central threaded hole. The first positioning pin hole is fitted with a first positioning pin, and the fourth threaded hole is fitted with a sixth screw. The bottom plate has multiple lifting tool threaded holes at the top, and lifting eye screws are fitted into these holes. The head pressure plate is equipped with a bending plate, a hook pressure plate through hole, and a hook pressure plate threaded hole. The hook pressure plate through hole is located between the bending plate and the hook pressure plate threaded hole, and the height of the bending plate is higher than the hook pressure plate through hole. The hook pressure plate through hole is an elongated hole, and a second double-ended stud is installed in the hook pressure plate through hole. The lower end of the second double-ended stud is connected to the threaded hole of the small support plate. Second locking nuts are installed on the second double-ended studs on both sides of the hook pressure plate through hole, and a second adjusting screw is installed in the hook pressure plate threaded hole. The machine tool positioning table is connected to the bottom center of the bottom of the bottom plate. The support plate is equipped with a support plate through hole and a third positioning pin hole. The third screw passes through the support plate through hole and connects to the threaded hole of the inclined support plate, connecting multiple support plates to multiple inclined support plate threaded holes respectively. The second positioning pin is installed in the second positioning pin hole and the third positioning pin hole.

2. The device for fixing holes at the ends of cylindrical parts as described in claim 1, characterized in that, The bottom plates on both sides of the inclined support plate are connected to the top of the large support plate. The large support plate is provided with a large support plate threaded hole. The lower end of the first double-ended stud is connected to the large support plate threaded hole. The flat pressure plate is provided with a flat pressure plate through hole and a flat pressure plate threaded hole. The flat pressure plate through hole is an elongated hole. The flat pressure plate through hole is fitted onto the first double-ended stud. The first double-ended studs on both sides of the flat pressure plate through hole are respectively installed with the first locking nut. The flat pressure plate threaded hole is installed with the first adjusting screw.

3. The end-hole fixing device for cylindrical parts as described in claim 2, characterized in that, A spring is installed on the first double-ended stud at the bottom of the through hole of the flat pressure plate, and a spring is installed on the second double-ended stud at the bottom of the through hole of the hook pressure plate.

4. The device for fixing holes at the ends of cylindrical parts as described in claim 3, characterized in that, The first and second adjusting screws are equipped with star-shaped handles on their tops, and flat washers are provided on both sides of the spring.

5. The device for fixing holes at the ends of cylindrical parts as described in claim 1, characterized in that, A central threaded hole is provided at the bottom center of the bottom plate, and a machine tool positioning table is provided with a machine tool positioning table through hole. The first screw passes through the machine tool positioning table through hole and connects to the central threaded hole.

6. The device for fixing holes at the ends of cylindrical parts as described in claim 1, characterized in that, The bottom of the bottom plate is provided with multiple support threaded holes, and the set screw truncated cone is provided with a set screw truncated cone through hole. The second screw passes through the set screw truncated cone through hole and is connected to the support threaded hole.

7. The device for fixing holes at the ends of cylindrical parts as described in claim 2, characterized in that, The large support plate, small support plate, inclined support plate and bottom plate are connected by welding.

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