Self-adaptive clamping device for forge piece shaft products

Abstract

The utility model discloses a forge piece shaft type product self-adaption clamping device which comprises a chuck body, a plurality of oil cylinder pressing blocks, a hard claw and a soft claw, the chuck body is configured to be fixed on a lathe spindle through a first bolt, a plurality of T-shaped grooves are formed in the chuck body in the radial direction, each oil cylinder pressing block is provided with a T-shaped boss, and the hard claw and the soft claw are arranged on the chuck body. The T-shaped boss is slidably connected in the T-shaped groove, the soft claw is detachably installed on the corresponding oil cylinder pressing block, an installation groove is formed in the position, close to the center axis of the chuck body, of the soft claw, a positioning shaft hole penetrating through the installation groove is formed in the side face of the soft claw, a positioning shaft is arranged in the positioning shaft hole, and the positioning shaft penetrates through the installation groove. And the hard claw is pivotally mounted in the mounting groove through the positioning shaft. Self-adaptive adjustment can be carried out according to the difference of forge piece blanks, irregular blank products can be used, and adaptability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machining of shaft parts, and particularly relates to an adaptive clamping device for forging shaft products. Background Art

[0002] When machining traditional forging shaft parts, the hard jaw clamping method on a lathe is usually adopted. Due to the irregular shape of the forging blank, the clamping is often unstable, resulting in dimensional tolerance exceeding.

[0003] Therefore, the technical personnel in this field are committed to developing an adaptive clamping device for forging shaft products, which can automatically clamp and loosen according to the shape and size of the workpiece, can achieve efficient and precise operation, and is suitable for high-end machining occasions. Summary of the Utility Model

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is that due to the irregular shape of the forging blank, the clamping is often unstable, resulting in dimensional tolerance exceeding.

[0005] To achieve the above object, the utility model provides an adaptive clamping device for forging shaft products, including a chuck body, a plurality of oil cylinder pressing blocks, hard jaws and soft jaws. The chuck body is configured to be fixed on the lathe spindle through a first bolt. A plurality of T-shaped grooves are radially formed in the chuck body. Each oil cylinder pressing block is provided with a T-shaped boss, and the T-shaped boss is slidably connected in the T-shaped groove. The soft jaw is detachably installed on the corresponding oil cylinder pressing block. An installation groove is formed in the soft jaw near the central axis of the chuck body. A positioning shaft hole penetrating the installation groove is formed in the side surface of the soft jaw, and a positioning shaft is arranged in the positioning shaft hole. The hard jaw is pivotally installed in the installation groove through the positioning shaft.

[0006] Further, the chuck body adopts a three-jaw chuck.

[0007] Further, the number of the oil cylinder pressing blocks, hard jaws and soft jaws is three.

[0008] Further, the chuck body adopts a four-jaw chuck.

[0009] Further, the number of the oil cylinder pressing blocks, hard jaws and soft jaws is four.

[0010] Further, mounting holes are formed in the top surface of the soft jaw, and the soft jaw is fixed on the corresponding oil cylinder pressing block through a second bolt passing through the mounting holes.

[0011] Further, the opposite contact surfaces of the hard jaw and the corresponding soft jaw are both arc surfaces, and gaps are provided at both ends of the opposite contact surfaces.

[0012] Further, the hard jaws are configured to be rotatable about the positioning axis so that both ends of the hard jaws can be self-adjusted according to the dimensional difference in the axial direction of the workpiece.

[0013] Further, the arc dimension of the clamping surface of the hard jaws facing the workpiece is determined according to the shaft diameter of the workpiece.

[0014] Further, an avoidance groove is provided between both ends of the clamping surface of the hard jaws facing the workpiece.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. It can effectively clamp the irregularly shaped forging blanks, improving the process yield.

[0017] 2. It reduces the cost increased by the dispersion of processes and improves the overall production efficiency.

[0018] 3. It has good durability, can withstand high-frequency and high-force use, and is suitable for high-end processing occasions.

[0019] The concept, specific structure and technical effects of the present utility model will be further described below in conjunction with the drawings to fully understand the purpose, features and effects of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present utility model.

[0021] Among them, 1 - soft jaws, 2 - hard jaws, 3 - workpiece, 4 - bolt, 5 - positioning axis, 6 - cylinder pressing block, 7 - chuck body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following describes multiple preferred embodiments of the present utility model by referring to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present utility model can be embodied in many different forms of embodiments, and the protection scope of the present utility model is not limited to the embodiments mentioned in the text.

[0023] In the drawings, components with the same structure are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model does not limit the size and thickness of each component. In order to make the drawings clearer, the thickness of some parts in the drawings is appropriately exaggerated.

[0024] Embodiment

[0025] As Figure 1As shown in the figure, this embodiment provides an adaptive clamping device for forging shaft products, including a chuck body 7, multiple oil cylinder pressing blocks 6, hard jaws 2 and soft jaws 1. The chuck body 7 is configured to be fixed on the lathe spindle through the first bolt 4. Multiple T-shaped grooves are radially formed in the chuck body 7. Each oil cylinder pressing block 6 is provided with a T-shaped boss, and the T-shaped boss is slidably connected in the T-shaped groove. The soft jaw 1 is detachably installed on the corresponding oil cylinder pressing block 6. An installation groove is formed at the position of the soft jaw 1 close to the central axis of the chuck body 7. A positioning shaft hole penetrating the installation groove is formed on the side surface of the soft jaw 1, and a positioning shaft 5 is arranged in the positioning shaft hole. The hard jaw 2 is pivotally installed in the installation groove through the positioning shaft 5.

[0026] In this embodiment, the chuck body 7 adopts a three-jaw chuck. The number of the oil cylinder pressing blocks 6, the hard jaws 2 and the soft jaws 1 is three.

[0027] In other embodiments, the chuck body 7 can also adopt a four-jaw chuck. The number of the oil cylinder pressing blocks 6, the hard jaws 2 and the soft jaws 1 is four.

[0028] Installation holes are formed on the top surface of the soft jaw 1, and the soft jaw 1 is fixed on the corresponding oil cylinder pressing block 4 through the second bolt passing through the installation holes.

[0029] The opposite contact surfaces of the hard jaw 2 and the corresponding soft jaw 1 are both arc surfaces, and gaps are provided at both ends of the opposite contact surfaces.

[0030] The hard jaw 2 is configured to be able to rotate around the positioning shaft 5, so that both ends of the hard jaw 2 can be self-adjusted according to the dimensional difference in the axial direction of the workpiece 3.

[0031] The arc dimension of the clamping surface of the hard jaw 2 facing the workpiece 3 is determined according to the shaft diameter of the workpiece 3.

[0032] Preferably, an avoidance groove is further provided between both ends of the clamping surface of the hard jaw 2 facing the workpiece 3.

[0033] The utility model can perform adaptive adjustment according to the differences of forging blanks, so that irregular blank products can be used, improving the adaptability.

[0034] The innovated clamping device of the utility model is more stable and reliable, and the verified data shows that the process yield is greatly improved.

[0035] We have carried out durability tests on the clamping device. In order to simulate the use conditions in actual industrial production, we applied clamping forces with different frequencies and magnitudes to the clamping device and observed its deformation and damage conditions. The experimental results show that the clamping device has good durability and can withstand high-frequency and high-strength use.

[0036] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. An adaptive clamping device for forged shaft products, characterized in that: It includes a chuck body, multiple cylinder clamping blocks, hard jaws and soft jaws. The chuck body is configured to be fixed to the lathe spindle by a first bolt. The chuck body is radially provided with multiple T-slots. Each cylinder clamping block is provided with a T-shaped boss. The T-shaped boss is slidably connected in the T-slot. The soft jaw is detachably mounted on the corresponding cylinder clamping block. The soft jaw is provided with a mounting groove near the central axis of the chuck body. A positioning shaft hole is provided on the side of the soft jaw that passes through the mounting groove. A positioning shaft is provided in the positioning shaft hole. The hard jaw can be pivotally mounted in the mounting groove through the positioning shaft.

2. The adaptive clamping device for forged shaft products according to claim 1, characterized in that: The chuck body adopts a three-jaw chuck.

3. The adaptive clamping device for forged shaft products according to claim 2, characterized in that: The number of the oil cylinder pressing block, hard claws and soft claws is three.

4. The adaptive clamping device for forged shaft products according to claim 1, characterized in that: The chuck body is a four-jaw chuck.

5. The adaptive clamping device for forged shaft products according to claim 2, characterized in that: The number of the oil cylinder pressing block, hard claws and soft claws is four.

6. The adaptive clamping device for forged shaft products according to claim 1, characterized in that: A mounting hole is provided on the top surface of the soft claw, and the soft claw is fixed on the corresponding oil cylinder pressing block by a second bolt passing through the mounting hole.

7. The adaptive clamping device for forged shaft products according to claim 1, characterized in that: The relative contact surfaces of the hard claw and the corresponding soft claw are both arc surfaces, and there is a gap at both ends of the relative contact surfaces.

8. The adaptive clamping device for forged shaft products according to claim 7, characterized in that: The hard jaw is configured to be rotatable around the positioning axis, so that both ends of the hard jaw can self-adjust according to the axial size difference of the workpiece.

9. The adaptive clamping device for forged shaft products according to claim 8, characterized in that: The arc size of the clamping surface of the hard jaw facing the workpiece is determined according to the shaft diameter of the workpiece.

10. The self-adaptive clamping device for forged shaft products according to claim 9, characterized in that: An avoidance groove is provided between two ends of the clamping surface of the hard claw facing the workpiece.

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