Hydraulic chuck tool and machining equipment

Abstract

A hydraulic chuck fixture includes a hydraulic chuck, a workpiece clamping flap, and a support member. The workpiece clamping flap has an axial positioning surface, which partially protrudes away from the end face to form a radial clamping surface perpendicular to the axial positioning surface. The support member is disposed within the space enclosed by the radial clamping surface of the workpiece. The outer periphery of the support member has several arc-shaped support surfaces for supporting the inner circle of the annular pad to be processed. The outer periphery of the support member, the radial clamping surface, and the axial positioning surface form an annular workstation. This invention has a simple and reasonable structure, simultaneously achieving the outer clamping of the workpiece's radial clamping surface against the outer circle of the pad to be processed and the inner support of the support member against the inner circle of the pad to be processed, thus clamping the pad at the workstation. Furthermore, the annular workstation can simultaneously accommodate multiple annular pads, enabling simultaneous processing of multiple pieces, suitable for batch processing of pads. This invention also proposes a processing device incorporating the above-mentioned hydraulic chuck fixture.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a hydraulic chuck tooling and processing equipment. Background Technology

[0002] like Figure 1-2 The image shows a fan-shaped ring pad 25 to be processed. Typically, the blank wall thickness is 7.5mm, and the required dimensions are: wall thickness 5+ / -0.1mm (or less), C1.5 chamfer, and a surface finish of Ra3.2. Analysis reveals two processing challenges for this pad: firstly, the thin wall (5+ / -0.1mm or less) and the C1.5 chamfer are difficult to machine; secondly, chip breaking cutting makes ensuring a smooth surface finish challenging. Since this pad requires machining both end faces and a C1.5 chamfer, grinding is unsuitable for batch processing. Vertical milling on a machining center is also costly. Therefore, a new processing method with high efficiency and low cost is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic chuck fixture and processing equipment. This hydraulic chuck fixture has multiple stations and is suitable for batch processing of pad blocks, which can solve the problem of low processing efficiency in the prior art.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a hydraulic chuck fixture, mainly comprising:

[0006] A hydraulic chuck, wherein the hydraulic chuck has two or more hydraulic soft jaws;

[0007] The workpiece clamping petal is mounted on the hydraulic soft jaw and corresponds one-to-one with the hydraulic soft jaw. The workpiece clamping petal has an axial positioning surface for axial positioning of the fan-shaped annular pad to be processed, and a part of the workpiece clamping petal protrudes away from the hydraulic chuck to form a radial clamping surface perpendicular to the axial positioning surface. The radial clamping surface is used to clamp the outer circle of the fan-shaped annular pad.

[0008] A support member is disposed within the space enclosed by the radial clamping surface, and the outer periphery of the support member is provided with a plurality of arc-shaped support surfaces for supporting the inner circle of the fan-shaped annular pad.

[0009] The outer periphery of the support member, the radial clamping surface, and the axial positioning surface form an annular workstation, within which multiple fan-shaped annular pads to be processed can be arranged circumferentially.

[0010] Optionally, the hydraulic chuck fixture may also include:

[0011] An adsorption element is disposed within the annular workstation and is used to adsorb the fan-shaped annular pad to prevent the fan-shaped annular pad from falling off.

[0012] Optionally, the adsorption element is a neodymium iron boron magnet block; the neodymium iron boron magnet block is embedded in the axial positioning surface.

[0013] Optionally, any of the workpiece clamping segments may be fan-shaped.

[0014] Optionally, the inner edge of any one of the workpiece clamping segments is provided with an inner annular segment protruding towards the side away from the hydraulic chuck, and the inner annular segments on all the workpiece clamping segments are assembled to form a radial support position; the support member has an inner hole at its center, and the support member is fitted onto the radial support position through the inner hole. Here, "inner edge" refers to the end of the workpiece clamping segment near the center hole of the hydraulic chuck.

[0015] Optionally, a gap is left between the inner hole and the outer wall of the radial support position.

[0016] Optionally, the support member is a circular ring support member, and the radial clamping surfaces on all the workpiece clamping segments are joined together to form a circular ring clamping surface. The circular ring support member and the circular ring clamping surface are arranged coaxially.

[0017] Optionally, the hydraulic gripper includes three or more, and the workpiece clamping flap is mounted on the hydraulic gripper via a bolt pair. The bolt pair includes a bolt and a nut that mates with the bolt.

[0018] Meanwhile, the present invention proposes a processing equipment capable of processing fan-shaped annular pads, including the hydraulic chuck tooling described above.

[0019] Optionally, the processing equipment is a CNC lathe.

[0020] The present invention achieves the following technical effects compared to the prior art:

[0021] The hydraulic chuck fixture proposed in this invention has a simple and reasonable structure. By setting an axial positioning surface, a radial clamping surface, and a support member, and forming a ring station among the three, it not only simultaneously realizes the outer clamping of the outer circle of the fan-shaped annular pad to be processed under the action of the hydraulic chuck, but also the inner top of the inner circle of the fan-shaped annular pad to be processed by the support member, so that the fan-shaped annular pad is clamped by the station, but also the ring station can accommodate multiple fan-shaped annular pads at the same time, so as to realize the simultaneous processing of multiple parts, thereby improving processing efficiency and reducing production costs, and is suitable for batch processing of pads.

[0022] In addition, in another technical solution disclosed in this invention, an adsorption component, such as a neodymium iron boron magnet block, is also provided in the annular station. This component can further adsorb the fan annular pad block to be processed on the basis of clamping the fan annular pad block in the above-mentioned annular station, effectively avoiding the phenomenon of the fan annular pad block falling off during the clamping process.

[0023] The present invention also proposes a processing device, such as a CNC lathe, that includes the aforementioned hydraulic chuck fixture, capable of processing sector-shaped annular pads. Since this processing device includes the hydraulic chuck fixture described above, it possesses all the characteristics of the aforementioned hydraulic chuck fixture, which will not be elaborated further here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the annular pad block to be processed.

[0026] Figure 2 This is the front view of the annular pad block to be processed;

[0027] Figure 3 This is a schematic diagram of the hydraulic chuck tooling disclosed in the embodiments of the present invention;

[0028] Figure 4 This is a schematic diagram of the hydraulic soft claw structure before welding of the sector block disclosed in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the clamped five pads disclosed in an embodiment of the present invention.

[0030] The attached diagram is labeled as follows: 1. Hydraulic chuck; 2. Hydraulic soft claw one; 3. Sector block one; 4. Neodymium iron boron magnet block; 5. Sector block three; 6. Bolt hole one; 7. Bolt hole two; 8. Magnet mounting hole; 9. Radial clamping surface; 10. Axial positioning surface; 11. Radial support position; 12. Pad one; 13. Pad two; 14. Pad three; 15. Pad four; 16. Pad five; 17. Support component; 18. Inner diameter of support ring; 19. Outer diameter of support ring; 20. Small diameter of pad; 21. Large diameter of pad; 22. Sector block two; 23. Hydraulic soft claw two; 24. Hydraulic soft claw three; 25. Sector ring pad to be processed. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] One objective of this invention is to provide a hydraulic chuck fixture with multiple stations, suitable for batch processing of pad blocks, which can solve the problem of low processing efficiency in existing technologies.

[0033] Another object of the present invention is to provide a processing device having the above-described hydraulic chuck fixture.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-5 As shown, this embodiment provides a hydraulic chuck fixture, mainly including a hydraulic chuck 1, a workpiece clamping flap, and a support member 17. The hydraulic chuck 1 has two or more hydraulic soft jaws. The workpiece clamping flap is installed on the hydraulic soft jaws and corresponds one-to-one with the hydraulic soft jaws. The workpiece clamping flap has an axial positioning surface 10 for axially positioning the fan-shaped annular pad 25 to be processed. A part of the workpiece clamping flap protrudes away from the hydraulic chuck 1 to form a radial clamping surface 9 perpendicular to the axial positioning surface 10. The radial clamping surface 9 is used to clamp the outer circle of the fan-shaped annular pad 25 to be processed. The support member 17 is disposed in the space enclosed by the radial clamping surface 9. The outer periphery of the support member 17 is provided with several arc-shaped support surfaces for supporting the inner circle of the fan-shaped annular pad 25 to be processed. The outer periphery of the support member 17, the radial clamping surface 9, and the axial positioning surface 10 form an annular station. Multiple fan-shaped annular pads 25 to be processed can be arranged circumferentially in the annular station to realize the processing of multiple pads at the same time, which is beneficial to improving processing efficiency. The aforementioned "partial part of the workpiece clamping flap" can be any position on the workpiece clamping flap. When the axial positioning surface of the workpiece clamping flap is a square, a circle or other shape, the protruding radial clamping surface 9 can be located at any position on the axial positioning surface.

[0036] In this embodiment, the hydraulic chuck fixture is further equipped with an adsorption component, which is located within the annular station and is used to adsorb the annular pad 25 to be processed, thereby preventing the annular pad 25 from falling off during clamping. Figure 3As shown, in a preferred embodiment, the adsorption component is a neodymium iron boron magnet block 4, and a magnet mounting hole 8 is provided on the axial positioning surface 10 for embedding and mounting the neodymium iron boron magnet block 4. Preferably, both the magnet mounting hole 8 and the neodymium iron boron magnet block 4 are circular, i.e., the magnet mounting hole 8 is a circular hole for magnet mounting, and the neodymium iron boron magnet block 4 is a circular neodymium iron boron magnet block. Of course, the magnet mounting hole 8 and the neodymium iron boron magnet block 4 can also be configured as triangular, rhomboid, or rectangular shapes. Similarly, in addition to the aforementioned neodymium iron boron magnet block 4, the adsorption component can also be configured as other permanent magnet structures or non-permanent magnet structures.

[0037] In this embodiment, as Figure 3 and 5 As shown, each workpiece clamping segment is fan-shaped. In this embodiment, three workpiece clamping segments are preferably provided: sector block 1 (3), sector block 2 (22), and sector block 3 (5). Each sector block has an inner ring segment protruding towards the side away from the hydraulic chuck 1 on its inner edge. The inner ring segments on all the sector blocks are joined together to form a radial support position 11, which is located within the space enclosed by the radial clamping surface 9. The support member 17 has an inner hole at its center, through which it is fitted onto the radial support position 11. The radial support position 11 has a columnar structure, and the support member 17 is fitted onto its outer circular surface. Preferably, a gap is left between the inner hole and the outer circular surface of the radial support position 11 to facilitate the loading and unloading of the support member 17. Each sector block has an inner arc surface, and the inner edges of all the sector blocks are joined together to form a closed annular circular surface.

[0038] In this embodiment, as Figure 3 As shown, the support member 17 is preferably configured as a circular ring support member, which has a continuous outer circular surface, formed by sequentially connecting the aforementioned plurality of arc-shaped support surfaces end to end. Besides this, the aforementioned plurality of arc-shaped support surfaces can also be located on the same circumference but discontinuously distributed; or they can be discontinuously distributed but distributed on different circumferences to achieve simultaneous support for fan-shaped pads of different sizes. In this embodiment, it is still preferred that the aforementioned arc-shaped support surfaces are located on the same circumference and arranged continuously.

[0039] In this embodiment, as Figure 3As shown, the radial clamping surfaces 9 on all the workpiece clamping segments are assembled to form a circular clamping surface, and the aforementioned circular support is arranged coaxially with this circular clamping surface. Simultaneously, this circular clamping surface is arranged on the outer periphery of the circular axial positioning surface 10, and is coaxially arranged with it. Preferably, the workpiece clamping segments are assembled to form a circular axial positioning surface 10, and the protruding radial clamping surface 9 is preferably located at the edge of this circular axial positioning surface 10. In this case, the aforementioned "partial location of the workpiece clamping segment" refers to the edge position of the workpiece clamping segment and the axial positioning surface. In actual operation, the protruding radial clamping surface 9 can also be located at the center of the axial positioning surface 10 or any eccentric portion other than the edge position. The specific location can be determined according to the actual situation.

[0040] In this embodiment, as Figure 3 As shown, the hydraulic soft gripper is fixedly installed on the end face of the hydraulic chuck 1, and the sector-shaped block of the splicing axial positioning surface 10 is fixedly installed on the hydraulic soft gripper. The hydraulic soft gripper is a prior art and will not be described in detail here.

[0041] In this embodiment, a groove can also be provided on the outer circular surface of the columnar radial support position 11, which is concave inward toward the center of the circle and extends along the axial direction of the radial support position 11, so as to facilitate the installation and removal of the support member 17 on the radial support position 11.

[0042] As a specific implementation, the hydraulic chuck fixture of this embodiment can preferably be configured with the following structure:

[0043] The hydraulic chuck fixture includes three sector blocks and three hydraulic jaws. The three sector blocks are sector block 1 (3), sector block 2 (22), and sector block 3 (5), each with a 120° arc angle, to form a circular axial positioning surface 10. The three hydraulic jaws are hydraulic jaw 1 (2), hydraulic jaw 2 (23), and hydraulic jaw 3 (24), spaced circumferentially along the circular end face of the hydraulic chuck 1. Preferably, sector blocks 1 (3), 2 (22), and 3 (5) are cut into three equal parts from a round bar using wire cutting, and then welded to their respective hydraulic jaws. Sector block 3 (5) is welded to hydraulic jaw 3 (24), and the other two groups are welded similarly. During welding, a gap must be maintained between any two adjacent sector blocks to allow for clamping and releasing of the hydraulic jaws, ensuring that the three sectors do not interfere with each other and can effectively clamp the workpiece. Based on the bolt hole positions on the hydraulic soft claw 24, bolt holes 1 (6) and 2 (7) are drilled at corresponding positions on the sector block 5. The hydraulic soft claw 24 is then fixed to the hydraulic chuck 1 via bolt holes 1 (6) and 2 (7). On the hydraulic chuck 1, sector blocks 1 (3), 2 (22), and 3 (5) are rough-machined first. Then, the hydraulic chuck 1 is removed and placed on a machining center to mill the magnet mounting holes 8. Subsequently, the fixture is remounted on a CNC lathe or other machining equipment. The radial clamping surface 9 is designed with the major diameter 21 of the sector ring pad 25 to be processed being R115 (R115 indicates that the outer radius of the sector ring pad 25 to be processed is 115). The diameter of the radial support position 11 is designed according to the inner hole size of the support member 17, i.e., the inner diameter 18 of the support ring, with a gap to facilitate the free entry and exit of the support member 17. The axial positioning surface 10 is used for the axial positioning of the sector ring pad 25 to be processed. In this way, the radial clamping surface 9, the axial positioning surface 10, and the radial support position 11 are all machined in the same process, ensuring the positioning accuracy of the tooling.

[0044] To ensure secure clamping of the workpiece, a support component 17 is designed and manufactured. The outer diameter of the support component 17, i.e., the outer diameter 19 of the support ring, is designed and manufactured according to the minor diameter 20 (R90) of the annular pad 25 to be processed (R90 indicates that the inner radius of the annular pad 25 to be processed is 90). Magnet mounting holes 8 are distributed along the circumference of the axial positioning surface 10, and neodymium iron boron magnets 4 are embedded in these holes. The function of the neodymium iron boron magnets 4 is to provide auxiliary support and prevent the pads from falling off during clamping. The size and number of neodymium iron boron magnets 4 are determined by the weight of the workpiece.

[0045] Given that the outer circular surface and radial clamping surface 9 of the support member 17 in this embodiment are both continuous annular shapes, the annular station formed between them is a type of annular station, in which multiple annular pads 25 to be processed can be clamped simultaneously. Figure 3 and 5As shown, five annular pads 25 to be processed are clamped in the circular workstation, namely pad 1 12, pad 2 13, pad 3 14, pad 4 15 and pad 5 16. All of these pads are exactly the same size and can be processed in one go, which achieves the purpose of improving efficiency and reducing costs.

[0046] The actual operation process of the above-mentioned hydraulic chuck tooling is as follows:

[0047] Stepping on the foot switch or activating another mode switch releases the hydraulic chuck 1, causing the three sector blocks (sector block 3, sector block 22, and sector block 5) to open. Push the support 17 to the bottom of the fixture along the radial support position 11, then place the pads 12, 13, 14, 15, and 16 respectively. The five pads are magnetically attached to the axial positioning surface 10. Stepping on the foot switch again or activating another mode switch clamps the hydraulic chuck 1 onto the workpiece. Press the start button on the processing equipment, such as a machine tool, to begin workpiece processing. After processing one side, the hydraulic chuck 1 can be released, and the pads can be reversed for processing on the other side, which is convenient and quick.

[0048] Therefore, the hydraulic chuck fixture proposed in this embodiment has a simple and reasonable structure. By setting an axial positioning surface, a workpiece radial clamping surface, and a support member, and forming a circular station among the three, it not only simultaneously realizes the outer clamping of the outer circle of the fan-shaped annular pad to be processed by the radial clamping surface of the workpiece and the inner top of the inner circle of the pad to be processed by the support member, so that the pad is clamped by the station, but also the circular station can accommodate multiple fan-shaped annular pads at the same time, so as to realize the simultaneous processing of multiple parts, thereby improving processing efficiency and reducing production costs, and is suitable for batch processing of pads.

[0049] In addition, by setting up an adsorption component, such as a neodymium iron boron magnet block, in the annular station, the pad block to be processed can be further adsorbed on the basis of clamping the pad block in the above-mentioned annular station, which effectively avoids the phenomenon of the pad block falling off during the clamping process.

[0050] It should be noted that the hydraulic chuck fixture in this embodiment is not limited to processing workpieces with dimensions of 5+ / -0.1mm wall thickness, C1.5 chamfer, and Ra3.2 surface finish; it can also process parts of other shapes and sizes, depending on the actual situation.

[0051] Example 2:

[0052] This embodiment proposes a processing device capable of processing sector-shaped annular pads, including the hydraulic chuck fixture as described in Embodiment 1. Preferably, the processing device can be a CNC lathe. The installation method and working principle of the hydraulic chuck 1 on the CNC lathe are well known in the art. The hydraulic chuck 1 can open and close under the control of corresponding switches on the CNC lathe, and will not be elaborated further here.

[0053] Since this processing equipment includes the aforementioned hydraulic chuck fixture, it possesses all the characteristics of the hydraulic chuck fixture described in Embodiment 1, which will not be repeated here.

[0054] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A hydraulic chuck fixture, characterized in that, include: A hydraulic chuck having three or more hydraulic soft jaws; The workpiece clamping petals are mounted on the hydraulic soft jaws and correspond one-to-one with the hydraulic soft jaws. Each workpiece clamping petal has an axial positioning surface for axially positioning the fan-shaped annular pad to be processed, and a portion of the workpiece clamping petal protrudes away from the hydraulic chuck to form a radial clamping surface perpendicular to the axial positioning surface. The radial clamping surface is used to clamp the outer circle of the fan-shaped annular pad. Each workpiece clamping petal is fan-shaped. The inner edge of each workpiece clamping petal is provided with an inner annular petal protruding away from the hydraulic chuck. The inner annular petals on all the workpiece clamping petals are assembled to form a radial support position. A support member is disposed within the space enclosed by the radial clamping surface. The support member is an annular support member, and the radial clamping surfaces on all the workpiece clamping segments are joined together to form an annular clamping surface. The annular support member is coaxially arranged with the annular clamping surface. An inner hole is opened at the center of the support member, and the support member is fitted onto the radial support position through the inner hole. A gap is left between the inner hole and the outer wall of the radial support position. The outer periphery of the support member is provided with several arc-shaped support surfaces for supporting the inner circle of the fan-shaped annular pad. The outer periphery of the support member, the radial clamping surface, and the axial positioning surface form an annular station. Multiple fan-shaped annular pads to be processed can be arranged simultaneously along its circumference in the annular station. During processing, the radial clamping surfaces of the workpiece clamping segments clamp the outer circle surface of the fan-shaped annular pad, and the support member pushes against the inner circle surface of the fan-shaped annular pad, so that any fan-shaped annular pad is clamped and fixed from both the inner and outer circles. An adsorption element is disposed within the annular workstation and is used to adsorb the fan-shaped annular pad to prevent the fan-shaped annular pad from falling off.

2. The hydraulic chuck fixture according to claim 1, characterized in that, The adsorption element is a neodymium iron boron magnet block; the neodymium iron boron magnet block is embedded in the axial positioning surface.

3. The hydraulic chuck fixture according to any one of claims 1-2, characterized in that, The workpiece clamping flap is mounted on the hydraulic soft claw by a bolt pair.

4. A processing device capable of processing fan-shaped annular pads, characterized in that, Includes the hydraulic chuck tooling as described in any one of claims 1-3.

5. The processing equipment according to claim 4, characterized in that, The processing equipment is a CNC lathe.

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