Tubular workpiece clamping device for milling machine
By using a clamping device consisting of a worktable, a support section, a chuck section, and a contact section on a milling machine, the problem of offset and rotation of tubular workpieces during milling is solved, achieving high-precision machining and a high yield rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 东莞金源五金机械有限公司
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, tubular workpieces are prone to displacement or rotation during milling due to the force of the milling cutter, which affects machining accuracy and yield.
A tubular workpiece clamping device is adopted, which includes a worktable, a receiving part, a chuck part, and an abutment part. The jaws and the abutment part cooperate with each other to act on the radial inner and outer sides of the tubular workpiece, respectively, to restrict its offset and rotation. The chuck part fixes both ends to prevent axial movement.
It effectively prevents tubular workpieces from shifting during milling, improves machining accuracy and yield, and avoids surface indentation damage.
Smart Images
Figure CN224509055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology for milling machines, and in particular to a clamping device for tubular workpieces on milling machines. Background Technology
[0002] A milling machine is a machine tool that uses milling cutters to process various surfaces of a workpiece. It is a common piece of equipment in the hardware processing industry. During processing, a fixture is used on the worktable to clamp and fix the workpiece in place to keep it stable in a specified position during processing, prevent the workpiece from moving during the processing, and ensure the accuracy and efficiency of workpiece processing.
[0003] For fixing tubular workpieces, existing technologies often involve securing the workpiece to a single clamp or chuck, followed by milling with a milling cutter. These clamps only apply force to one side of the tubular workpiece radially, providing insufficient overall fixation. During milling, the milling cutter exerts force on the workpiece, making it prone to shifting or rotating when fixed solely by clamps, affecting machining accuracy and reducing product yield. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a tubular workpiece clamping device for a milling machine to solve the above problems.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] This utility model provides a tubular workpiece clamping device for a milling machine, which includes a worktable, a receiving part, a chuck part, and an abutment part.
[0007] The workbench has multiple parallel mounting grooves; the receiving part includes a first slide block and two receiving blocks. The first slide block is slidably connected to the mounting groove of the workbench. The first slide block has a limiting groove extending perpendicular to the mounting groove. The two receiving blocks are respectively connected to the limiting groove, and the two receiving blocks are arranged facing each other to form a receiving groove for receiving tubular workpieces; the chuck part includes a second slide block and a chuck body. The second slide block is slidably connected to the mounting groove of the workbench, and the chuck body is fixed to the second slide block. There are two chucks, located at the left and right ends of the receiving part, respectively, with the two chucks facing each other. The chuck body extends into the opening of the tubular workpiece through the jaws and abuts against the inner surface of the side wall of the tubular workpiece to fix it. The abutting part includes a third slide, a drive cylinder, and an abutting joint. The third slide is slidably connected to the mounting groove of the worktable, the drive cylinder is fixed to the third slide, and the abutting joint is connected to the telescopic output shaft of the drive cylinder to press against the outer surface of the side wall of the tubular workpiece towards the jaws and cooperate with the jaws to clamp the tubular workpiece.
[0008] Preferably, the number of abutting parts is four, with each pair of abutting parts arranged in opposite directions. The pairs of abutting parts are located on the front and rear sides of the chuck body, and the chuck body is a three-jaw chuck.
[0009] Preferably, the first slide, the second slide, and the third slide are all provided with through holes for fixing to the mounting groove by bolts, and the supporting block is provided with through holes for fixing to the limiting groove by bolts.
[0010] Preferably, each of the two supporting blocks has a stepped structure on its opposing surface. The supporting block abuts against the outer surface of the side wall of the tubular workpiece through its stepped structure and moves downward along the depth direction of the supporting groove, where the width of the supporting groove gradually decreases.
[0011] Preferably, the contact end of the abutment with the tubular workpiece is covered with an elastic adhesive layer.
[0012] Preferably, the third slide has an upwardly extending cylinder connecting plate, the drive cylinder is locked to the cylinder connecting plate, and the extension and retraction output shaft of the drive cylinder is perpendicular to the cylinder connecting plate.
[0013] Preferably, the extension line of the telescopic output shaft in the telescopic direction intersects the centerline of the chuck body.
[0014] The technical effects achieved by this utility model include:
[0015] Based on the above-mentioned tubular workpiece clamping device, the jaws of the chuck part can cooperate with the abutment of the abutment part to act on the inner and outer sides of the same radial point of the tubular workpiece, clamping the tubular workpiece, restricting the radial displacement of the tubular workpiece, and further preventing its rotation. It is also less likely to cause indentation damage to the surface of the tubular workpiece. By using the two chuck parts to abut against the two ends of the tubular workpiece, the movement of the tubular workpiece in its axial direction is further restricted, thereby effectively avoiding displacement of the tubular workpiece during processing, ensuring the accuracy of milling, and maintaining the yield of the manufactured parts. Attached Figure Description
[0016] Figure 1 A schematic diagram of the structure of the tubular workpiece clamping device for a milling machine provided in an embodiment of this utility model;
[0017] Figure 2 A schematic diagram of the tubular workpiece clamping device for fixing the tubular workpiece;
[0018] Figure 3 This is a schematic diagram of the chuck and abutment parts of the tubular workpiece clamping device for clamping the tubular workpiece.
[0019] The reference numerals in the above figures are as follows:
[0020] 100 tubular workpieces;
[0021] Workbench 1, mounting slide 10;
[0022] 2. Receiver 2, first slide block 21, limiting slide 210, receiving block 22, receiving groove 220;
[0023] 3. Chuck section 3, second slide 31, chuck body 32, chuck claw 321;
[0024] Abutting part 4, third slide 41, cylinder connecting plate 411, drive cylinder 42, abutting part 43. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.
[0026] In order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not of great importance are omitted.
[0027] Reference Figure 1 As shown, this utility model embodiment provides a tubular workpiece clamping device for a milling machine, which includes a worktable 1, a receiving part 2, a chuck part 3, and an abutment part 4.
[0028] The worktable 1 is provided with a plurality of parallel mounting grooves 10, which extend in the left and right direction and are T-slots of the milling machine.
[0029] Combination Figure 1 and Figure 2 As shown, the receiving part 2 includes a first slide 21 and two receiving blocks 22. The first slide 21 is slidably connected to the mounting slide 10 of the worktable 1. The first slide 21 is provided with a limiting slide 210 extending perpendicularly to the mounting slide 10. The two receiving blocks 22 are respectively connected to the limiting slide 210, that is, the receiving blocks 22 can move along the limiting slide 210 in the front-back direction. The two receiving blocks 22 are arranged facing each other to form a receiving groove 220, which is used to receive the tubular workpiece 100 by abutting against the outer surface of the side wall of the tubular workpiece 100.
[0030] The chuck part 3 includes a second slide 31 and a chuck body 32. The second slide 31 is slidably connected to the mounting groove 10 of the worktable 1. The chuck body 32 is fixed on the second slide 31. There are two chuck parts 3. The two chuck parts 3 are located at the left and right ends of the receiving part 2, respectively. The two chuck parts 3 are arranged facing each other. The chuck body 32 extends into the opening of the tubular workpiece 100 and abuts against the inner surface of the side wall of the tubular workpiece 100 by setting the claws 321, so as to fix the tubular workpiece 100.
[0031] The abutting part 4 has multiple parts, each abutting part 4 including a third slide 41, a drive cylinder 42, and an abutting joint 43. The third slide 41 is slidably connected to the mounting groove 10 of the worktable 1, and the drive cylinder 42 is fixed to the third slide 41, combined with... Figure 2 and Figure 3 As shown, the abutment 43 is connected to the telescopic output shaft of the drive cylinder 42 and is used to press against the outer surface of the side wall of the tubular workpiece 100 toward the chuck 321, and cooperate with the chuck 321 to clamp the tubular workpiece 100.
[0032] The working process of the tubular workpiece clamping device based on the above milling machine is as follows:
[0033] First, by adjusting and locking the positions of the two support blocks 22 connected to the limiting slide groove 210, a support groove 220 adapted to the size of the tubular workpiece 100 is formed between the two support blocks 22. The tubular workpiece 100 is placed into the support groove 220, so that the bottom of the side of the tubular workpiece 100 is abutted and fixed by the two support blocks 22. Then, by adjusting the positions of the two second slides 31 on the mounting slide groove 10, the two chuck bodies 32 are moved to the left and right ends of the tubular workpiece 100 respectively, restricting the lateral movement of the tubular workpiece 100, so that the jaws 321 of the chuck body 32 extend into the opening of the tubular workpiece 100 and abut against the side of the tubular workpiece 100. The tubular workpiece 100 is fixed to the inner surface of the wall by internal support. Then, by adjusting the position of multiple third slides 41 on the mounting slide groove 10, the abutment 43 can be positioned to point to the corresponding claw 321. The abutment 43 is driven by the drive cylinder 42. The abutment 43 and the claw 321 cooperate to clamp the tubular workpiece 100, so that the tubular workpiece 100 is clamped by opposite forces on both sides in the radial direction, preventing the tubular workpiece 100 from shifting radially and axially. It can also reduce the occurrence of defects such as dents on the surface of the tubular workpiece 100 caused by applying excessive force on one side in the radial direction, ensuring processing accuracy and improving the product yield.
[0034] Specifically, there are four abutment parts 4, and each pair of abutment parts 4 are arranged in opposite directions. The pairs of abutment parts 4 are located on the front and rear sides of the chuck body 32. The chuck body 32 is a three-jaw chuck. Two jaws 321 in each chuck body 32 are located on the upper part of the chuck body 32, corresponding to the abutment joints 43 of a pair of abutment parts 4.
[0035] The number and spacing of the parallel mounting slides 10 are set according to actual needs. The first slide 21, the second slide 31 and the third slide 41 are selected to be connected to the specific mounting slide 10 according to their relative positions. In order to lock and fix the first slide 21, the second slide 31 and the third slide 41 on the mounting slide 10 after the positions are determined, the first slide 21, the second slide 31 and the third slide 41 are all provided with through holes for fixing to the mounting slide 10 by bolts. The supporting block 22 is provided with through holes for fixing to the limiting slide 210 by bolts.
[0036] Furthermore, an anti-slip layer is provided on the opposing surfaces of the supporting blocks 22 to increase the friction between the supporting blocks 22 and the tubular workpiece 100, thereby hindering the tubular workpiece 100 from rotating around its central axis. When the side surface of the tubular workpiece 100 has an uneven structure, a supporting block 22 of the corresponding shape can be used to secure it to these uneven structures, restricting the tubular workpiece 100 from rotating around its central axis, thereby further improving the stability of the tubular workpiece 100. In this embodiment, each of the opposing surfaces of the two supporting blocks 22 has a stepped structure. The supporting blocks 22 abut against the outer surface of the side wall of the tubular workpiece 100 through their stepped structures, and the width of the supporting groove 220 gradually decreases as it extends downward along the depth direction of the supporting groove 220.
[0037] To further prevent the abutment 43 from damaging the surface of the tubular workpiece 100, an elastic adhesive layer is provided on the contact end of the abutment 43 with the tubular workpiece 100.
[0038] Specifically, an inclined upward extending cylinder connecting plate 211 is formed on the first slide 21, and the driving cylinder 42 is locked on the cylinder connecting plate 211. The telescopic output shaft of the driving cylinder 42 is perpendicular to the cylinder connecting plate 211, so that the moving path of the abutment 43 is inclined downward pressing against the tubular workpiece 100. In practice, the height of the first slide 21 and the inclination angle of the cylinder connecting plate 211 relative to the first slide 21 can be set according to the predetermined position of the abutment 43 acting on the tubular workpiece 100.
[0039] The extension line of the telescopic output shaft in the telescopic direction intersects the center line of the chuck body 32, that is, the moving direction of the abutment 43 points to the central axis of the tubular workpiece 100.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0041] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A tubular workpiece clamping device for a milling machine, characterised in that, include: A workbench (1) is provided with multiple parallel mounting grooves (10); The receiving part (2) includes a first slide (21) and two receiving blocks (22). The first slide (21) is slidably connected to the mounting groove (10) of the worktable (1). The first slide (21) has a limiting groove (210) extending perpendicularly to the mounting groove (10). The two receiving blocks (22) are respectively connected to the limiting groove (210). The two receiving blocks (22) are arranged facing each other to form a receiving groove (220) for receiving tubular workpieces (100). The chuck part (3) includes a second slide (31) and a chuck body (32). The second slide (31) is slidably connected to the mounting groove (10) of the worktable (1). The chuck body (32) is fixed on the second slide (31). There are two chuck parts (3). The two chuck parts (3) are located at the left and right ends of the receiving part (2) respectively. The two chuck parts (3) are arranged facing each other. The chuck body (32) extends into the opening of the tubular workpiece (100) and abuts against the inner surface of the side wall of the tubular workpiece (100) by setting the jaws (321) to fix the tubular workpiece (100). The abutting part (4) includes a third slide (41), a driving cylinder (42) and an abutting head (43). The third slide (41) is slidably connected to the mounting groove (10) of the worktable (1). The driving cylinder (42) is fixed on the third slide (41). The abutting head (43) is connected to the telescopic output shaft of the driving cylinder (42) and is used to press against the outer surface of the side wall of the tubular workpiece (100) toward the jaw (321) and cooperate with the jaw (321) to clamp the tubular workpiece (100).
2. The tubular workpiece chucking apparatus of claim 1 wherein, The number of abutment parts (4) is four, and every two abutment parts (4) are arranged in pairs facing each other. The pairs of abutment parts (4) are located on the front and rear sides of the chuck body (32), which is a three-jaw chuck.
3. The tubular workpiece chucking apparatus of claim 1 wherein, The first slide (21), the second slide (31) and the third slide (41) are all provided with through holes for fixing to the mounting slide (10) by bolts, and the support block (22) is provided with through holes for fixing to the limiting slide (210) by bolts.
4. The tubular workpiece chucking apparatus of claim 1 wherein, Each of the two supporting blocks (22) has a stepped structure on its opposite surface. The supporting block (22) abuts against the outer surface of the side wall of the tubular workpiece (100) through its stepped structure and moves downward along the depth direction of the supporting groove (220). The width of the supporting groove (220) gradually decreases.
5. The tubular workpiece chucking apparatus of claim 1 wherein, The contact end of the abutment (43) with the tubular workpiece (100) is covered with an elastic adhesive layer.
6. The tubular workpiece chucking apparatus of claim 1 wherein, An inclined upward extending cylinder connecting plate (411) is formed on the third slide (41), the drive cylinder (42) is locked on the cylinder connecting plate (411), and the telescopic output shaft of the drive cylinder (42) is perpendicular to the cylinder connecting plate (411).
7. The tubular workpiece chucking apparatus of claim 6, wherein, An extension line of the telescopic output shaft in the telescopic direction intersects with the center line of the chuck body (32).