A workpiece clamping structure for deep hole drilling of the center hole of a slender shaft

Abstract

The utility model discloses a workpiece clamping structure for deep hole drilling of the center hole of a slender shaft, comprising a deep hole drilling machine, a hydraulic collet connected to the left end of the deep hole drilling machine, sliding rails are provided on both sides of the top of the deep hole drilling machine near the hydraulic collet, and sliding seats are slidably sleeved on the sliding rails; a connecting plate is connected between the tops of the sliding seats on both sides, a clamping bracket is connected to the top of the connecting plate, and a center clamping group is fixedly connected to the right side of the clamping bracket; the center clamping group comprises a hydraulic connector and a clamping frame, a clamping claw is connected to the top of the clamping frame, and a clamping roller is rotatably connected to the end of the clamping claw. The advantage of the utility model over the prior art is that it provides a workpiece clamping structure for deep hole drilling of the center hole of a slender shaft to prevent the axis of the workpiece from being bent.

Description

Technical Field

[0001] The utility model relates to the technical field of deep hole drilling, in particular to a workpiece clamping structure for deep hole drilling a central hole of a slender shaft. Background Art

[0002] In the medical device industry, many titanium alloy and stainless steel slender shafts need to be drilled with concentric through holes. In order to improve the deflection of concentric hole drilling of slender shafts, deep hole drilling machines have very high requirements for the clamping accuracy and stability of the workpiece.

[0003] Traditional workpiece clamping for deep hole drilling Figure 1 As shown in the figure, two inner cone top plates clamp the workpiece from the left and right sides. For slender workpieces, this clamping method will cause the workpiece axis to bend. When drilling deep holes, the inner hole accuracy cannot be guaranteed and the workpiece often breaks through the wall, resulting in waste. Utility Model Content

[0004] 1. Problems to be solved

[0005] The technical problem to be solved by the utility model is that the existing two-way clamping method is easy to cause the inner hole accuracy to be unable to be guaranteed when used, and the wall is often broken, resulting in waste.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a workpiece clamping structure for deep hole drilling of the center hole of a slender shaft, comprising a deep hole drilling machine, a hydraulic collet is connected to the left end of the deep hole drilling machine, sliding rails are provided on both sides of the top of the deep hole drilling machine near the hydraulic collet, and sliding seats are slidably sleeved on the sliding rails;

[0008] A connecting plate is connected between the tops of the sliding seats on both sides, a clamping bracket is connected to the top of the connecting plate, and a central clamping group is fixedly connected to the right side of the clamping bracket;

[0009] The central clamping group comprises a hydraulic connector and a clamping frame. The top of the clamping frame is connected with a clamping claw, and the end of the clamping claw is rotatably connected with a clamping roller.

[0010] As an improvement, the clamping claws include side clamping claws connected to both sides of the top end of the clamping frame and a lower claw connected to the middle part of the top end of the clamping frame.

[0011] As an improvement, the cross-sections of the clamping bracket and the connecting plate are formed into an L shape, and a stiffening plate is connected between the clamping bracket and the connecting plate, and an opening is provided on the stiffening plate to cooperate with the hydraulic connecting head.

[0012] As an improvement, the hydraulic collet chucks are provided in a plurality of groups, the number of the central clamping groups is consistent with the number of the hydraulic collet chucks and the positions are arranged in a one-to-one correspondence.

[0013] (III) Beneficial effects

[0014] The advantages of the utility model compared with the prior art are: in the present application, an additional clamping tool is provided for use in conjunction with the original deep hole drilling machine tool, and the workpiece is clamped by the clamping claws and the clamping rollers that are arranged in coordination therewith, so that the workpiece is no longer subjected to axial force, thereby avoiding the bending of the axis of the workpiece, thereby ensuring normal processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the traditional workpiece clamping structure for deep hole drilling.

[0016] Figure 2 The present invention is a structural schematic diagram of a workpiece clamping structure for deep hole drilling of a slender shaft center hole.

[0017] Figure 3 The present invention is a structural schematic diagram of an enlarged view of a workpiece clamping structure for deep hole drilling a center hole of a slender shaft.

[0018] Figure 4 The present invention is a structural schematic diagram from a second perspective of a workpiece clamping structure for deep hole drilling a center hole of a slender shaft.

[0019] Figure 5 The present invention is a schematic structural diagram of a workpiece clamping structure for deep hole drilling a center hole of a slender shaft from a third perspective.

[0020] As shown in the figure: 1. Deep hole drilling machine; 2. Hydraulic collet; 3. Sliding rail; 4. Sliding seat; 5. Connecting plate; 6. Clamping bracket; 7. Hydraulic connecting head; 8. Clamping frame; 9. Clamping roller; 10. Side clamping jaw; 11. Lower claw; 12. Reinforced plate. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0022] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] Please refer to the attached Figure 1-5 A workpiece clamping structure for deep hole drilling a center hole of a slender shaft comprises a deep hole drilling machine tool 1, wherein a hydraulic collet 2 is connected to the left end of the deep hole drilling machine tool 1.

[0027] During specific use, sliding rails 3 are provided on both sides of the top of the deep hole drilling machine tool 1 near the hydraulic collet chuck 2, and sliding seats 4 are slidably sleeved on the sliding rails 3. A connecting plate 5 is connected between the tops of the sliding seats 4 on both sides, and a clamping bracket 6 is connected to the top of the connecting plate 5. A central clamping group is fixedly connected to the right side of the clamping bracket 6.

[0028] In order to increase the clamping effect, the central clamping group includes a hydraulic connecting head 7 and a clamping frame 8. The top of the clamping frame 8 is connected with a clamping claw, and the end of the clamping claw is rotatably connected with a clamping roller 9. The clamping roller 9 reduces the wear on the workpiece. The clamping claw includes side clamping claws 10 connected to both sides of the top of the clamping frame 8 and a lower claw 11 connected to the middle of the top of the clamping frame 8. The side clamping claws 10 on both sides cooperate with the lower claw 11 to ensure the clamping effect of the workpiece without applying axial pressure to it.

[0029] The cross-section of the clamping bracket 6 and the connecting plate 5 is formed into an L shape. A reinforcing plate 12 is also connected between the clamping bracket 6 and the connecting plate 5. An opening is provided on the reinforcing plate 12 to cooperate with the hydraulic connecting head 7. At the same time, there are multiple groups of hydraulic collets 2. The number of the central clamping groups is consistent with that of the hydraulic collets 2 and the positions are arranged one by one.

[0030] The hydraulic collet clamps the outer circle of the left end of the workpiece, and the hydraulic center frame clamps the outer circle of the right end of the workpiece. The workpiece is positioned using the outer circle of the workpiece, which can achieve self-centering of the workpiece. The workpiece is not subjected to axial force and the parts are not deformed. Using this clamping method, the clamping accuracy and stability are greatly improved.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0033] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A workpiece clamping structure for deep hole drilling a center hole of a slender shaft, comprising a deep hole drilling machine tool (1), wherein a hydraulic collet (2) is connected to the left end of the deep hole drilling machine tool (1), and characterized in that: Sliding rails (3) are provided on both sides of the top of the deep hole drilling machine tool (1) near the hydraulic collet (2), and sliding seats (4) are slidably sleeved on the sliding rails (3); A connecting plate (5) is connected between the tops of the sliding seats (4) on both sides, a clamping bracket (6) is connected to the top of the connecting plate (5), and a central clamping group is fixedly connected to the right side of the clamping bracket (6); The central clamping group comprises a hydraulic connection head (7) and a clamping frame (8), the top of the clamping frame (8) is connected with a clamping claw, and the end of the clamping claw is rotatably connected with a clamping roller (9).

2. A workpiece clamping structure for deep hole drilling of a slender shaft center hole according to claim 1, characterized in that: The clamping claws include side clamping claws (10) connected to both sides of the top end of the clamping frame (8) and a lower abutting claw (11) connected to the middle of the top end of the clamping frame (8).

3. The workpiece clamping structure for deep hole drilling of the center hole of a slender shaft according to claim 1, characterized in that: The cross-sections of the clamping bracket (6) and the connecting plate (5) are formed into an L shape. A reinforcing plate (12) is also connected between the clamping bracket (6) and the connecting plate (5). An opening is provided on the reinforcing plate (12) to match the hydraulic connecting head (7).

4. A workpiece clamping structure for deep hole drilling of a slender shaft center hole according to claim 3, characterized in that: The hydraulic collet chuck (2) is provided with a plurality of groups, the number of the central clamping groups is consistent with the number of the hydraulic collet chuck (2), and the positions are arranged in a one-to-one correspondence.

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