Pin shaft clamping device

Abstract

The utility model provides a pin shaft clamping device. The pin shaft clamping device comprises a base, two fixing ends and a clamping assembly. Wherein the two fixed ends are respectively and fixedly arranged on the base, and the two fixed ends are respectively provided with a first positioning part. The clamping assembly comprises a power unit, a transmission unit and two clamping ends. The two clamping ends are respectively provided with a second positioning part, and a guide mechanism is arranged between the two clamping ends and the base; the power unit is arranged on the base, and the transmission unit is arranged between the power unit and the two clamping ends. According to the pin shaft clamping device, the labor intensity of workers can be reduced, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pin shaft processing technical field, specifically, relate to a pin shaft clamping device. BACKGROUND

[0002] Part of the pin shaft needs to be milled on the milling machine after turning. Before processing, the pin shaft needs to be fixed. At present, the pin shaft is usually fixed by clamping with a vice. However, the existing clamping method has the following defects: the vice needs to clamp the workpiece manually and loosen the workpiece, which is labor-intensive and low in clamping efficiency; moreover, the vice can usually clamp only one workpiece, and the milling efficiency is low. SUMMARY

[0003] Therefore, the utility model provides a pin shaft clamping device to at least partially solve the technical problems of high labor intensity and low efficiency of the existing pin shaft milling fixing method.

[0004] The technical scheme of the utility model is as follows:

[0005] A pin shaft clamping device comprises:

[0006] a base;

[0007] two fixed ends, respectively fixed on the base, and each provided with a first positioning part;

[0008] a clamping assembly comprising a power unit, a transmission unit and two clamping ends; each of the two clamping ends is provided with a second positioning part, and a guide mechanism is arranged between the two clamping ends and the base; the power unit is arranged on the base, and the transmission unit is arranged between the power unit and the two clamping ends;

[0009] The power unit can drive the two clamping ends to slide along the guide direction of the guide mechanism, so that the second positioning part clamps the pin shaft with the corresponding first positioning part.

[0010] Further, the base comprises a bottom plate, a vertical plate and two mounting plates; the vertical plate is perpendicular to the bottom plate, and the two mounting plates are perpendicular to the bottom plate and the vertical plate and are respectively fixed at both ends of the vertical plate; the two fixed ends are correspondingly arranged on the inner side surfaces of the two mounting plates.

[0011] Further, the guide mechanism comprises a guide rail fixed on the vertical plate, and two sliders respectively fixed on the clamping ends, and the two sliders can slide on the guide rail respectively.

[0012] Further, the power unit is a cylinder fixed on the bottom plate and located between the two fixed ends, and the extension direction of the extension end of the cylinder is perpendicular to the guiding direction of the guiding mechanism.

[0013] Further, the transmission unit comprises two connecting rods corresponding to the two clamping ends, one end of each connecting rod is hinged to the extension end, and the other end of each connecting rod is hinged to the corresponding clamping end.

[0014] Further, a sliding member is slidably arranged on the extension end, and the sliding direction of the sliding member is parallel to the sliding direction of the clamping end; one end of each connecting rod away from the corresponding clamping end is hinged to one end of the sliding member.

[0015] Further, a dovetail groove is formed on the extension end and penetrates through the extension end along the sliding direction of the clamping end, the sliding member comprises a dovetail block slidably arranged in the dovetail groove, and a connecting plate fixed on the top end of the dovetail block, and each connecting rod is hinged to the connecting plate.

[0016] The working principle and beneficial effects of the present application are as follows:

[0017] The pin shaft clamping device provided by the present application comprises two fixed ends, two clamping ends, and a power unit for driving the two clamping ends to slide, so that the second positioning part on the two clamping ends and the first positioning part on the fixed end can clamp the pin shaft. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0019] Figure 1 The pin shaft clamping device provided by the present application comprises two fixed ends, two clamping ends, and a power unit for driving the two clamping ends to slide, so that the second positioning part on the two clamping ends and the first positioning part on the fixed end can clamp the pin shaft.

[0020] Figure 2 The pin shaft clamping device provided by the present application comprises two fixed ends, two clamping ends, and a power unit for driving the two clamping ends to slide, so that the second positioning part on the two clamping ends and the first positioning part on the fixed end can clamp the pin shaft.

[0021] In the diagram: 100, base; 110, base plate; 120, upright plate; 130, mounting plate; 200, fixed end; 201, first positioning part; 300, clamping assembly; 310, power unit; 311, column; 320, transmission unit; 321, connecting rod; 330, clamping end; 301, second positioning part; 302, dovetail groove; 410, guide rail; 420, slider; 500, sliding component; 510, dovetail block; 520, connecting plate. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] This embodiment provides a pin clamping device, see reference. Figure 1 As shown, it includes a base 100, two fixed ends 200, and a clamping assembly 300. The two fixed ends 200 are respectively fixed to the base 100, and each fixed end 200 is provided with a first positioning part 201. The clamping assembly 300 includes a power unit 310, a transmission unit 320, and two clamping ends 330; each clamping end 330 is provided with a second positioning part 301, and a guide mechanism is provided between the two clamping ends 330 and the base 100; the power unit 310 is disposed on the base 100, and the transmission unit 320 is disposed between the power unit 310 and the two clamping ends 330.

[0024] Based on the above structure, the power unit 310 of this embodiment can drive the two clamping ends 330 to slide along the guiding direction of the guiding mechanism, so that the second positioning part 301 clamps the pin with the corresponding first positioning part 201.

[0025] In this embodiment, the power unit 310 provides power to clamp the pin. Compared with manual clamping by the operator, the solution in this embodiment can reduce the labor intensity of the operator. In addition, the solution in this embodiment can clamp two pins at the same time. Compared with a vise that can only clamp one pin at a time, the solution in this embodiment can also improve the milling efficiency of the pin.

[0026] In terms of specific structure, refer to Figure 1As shown, the base 100 of the embodiment comprises a bottom plate 110, a vertical plate 120 and two mounting plates 130; the vertical plate 120 is perpendicular to the bottom plate 110, and the two mounting plates 130 are perpendicular to the bottom plate 110 and the vertical plate 120, and are respectively fixed at the two ends of the vertical plate 120; two fixed ends 200 are respectively arranged on the inner sides of the two mounting plates 130. Among them, the inner side of the mounting plate 130 refers to the side of the two mounting plates 130 close to each other.

[0027] Reference Figure 1 As shown, the guide mechanism of the embodiment comprises a guide rail 410 fixed on the vertical plate 120, and two sliding blocks 420 respectively fixed on the clamping ends 330, and the two sliding blocks 420 can slide on the guide rail 410 respectively. That is, the clamping end 330 of the embodiment can slide along the length direction of the guide rail 410 under the pushing of the power unit 310, so as to make the clamping end 330 close to or away from the corresponding fixed end 200.

[0028] In some embodiments, the guide mechanism can also comprise two guide rods arranged in parallel and spaced apart on the vertical plate 120, and a guide hole configured on the clamping end 330, which can be slid on the two guide rods one by one.

[0029] Reference Figure 1 As shown, the power unit 310 of the embodiment is a pneumatic cylinder fixed on the bottom plate 110 and located between the two fixed ends 200, and the extension direction of the extension end of the pneumatic cylinder is perpendicular to the guide direction of the guide mechanism.

[0030] In some embodiments, the power unit 310 can also be a hydraulic cylinder or an electric telescopic rod and the like.

[0031] Reference Figure 1 And Figure 2 As shown, in the embodiment, a cylindrical column 311 is fixed on the extension end of the pneumatic cylinder, the axial direction of the column 311 is perpendicular to the guide direction of the guide mechanism. And a dovetail groove 302 is provided on the top end of the column 311, which penetrates the column 311 along the radial direction of the column 311. The pin shaft fixing device of the embodiment further comprises a sliding member 500, which comprises a dovetail block 510 slidably arranged in the dovetail groove 302, and a connecting plate 520 fixedly arranged on the top end of the dovetail block 510 and higher than the column 311.

[0032] Reference Figure 1 And Figure 2 As shown, the transmission unit 320 of the embodiment comprises two connecting rods 321, one end of each of the two connecting rods 321 is hinged with two ends of the connecting plate 520, and the other end of each of the two connecting rods 321 is hinged with the corresponding clamping end 330.

[0033] Based on the above structure, when the telescopic end of the cylinder drives the column 311 to rise, the clamping end 330 can be driven by the connecting rod 321 to approach the corresponding fixed end 200 to clamp the pin shaft; and when the telescopic end of the cylinder drives the column 311 to descend, the clamping end 330 can be driven by the connecting rod 321 to move away from the corresponding fixed end 200 to release the pin shaft.

[0034] In the embodiment, by arranging the above structure, when the two pin shafts are clamped, the reaction force from the pin shafts on the two connecting rods 321 is mostly counteracted, and only a small part of the reaction force acts on the cylinder, so that the clamping of the two pin shafts is more firm.

[0035] In some embodiments, the sliding member 500 can not be arranged, and one end of the connecting rod 321 is directly hinged with the column 311, but in this scheme, if there is a slight deviation in the diameters of the pin shafts on both sides, the rising of the column 311 will stop after clamping the pin shaft with a larger diameter, and the pin shaft on the other side can not be clamped. By arranging the sliding member 500, after the pin shaft on one side is clamped, the sliding of the sliding member 500 on the column 311 can make the pin shaft on the other side also be clamped.

[0036] Reference Figure 1 and Figure 2 As shown in Figs. 1 and 2, the fixed end 200 and the clamping end 330 of the embodiment are in the shape of a square block, the first positioning part 201 is a first arc-shaped groove arranged on the end face of the fixed end 200, and the second positioning part 301 is a second arc-shaped groove arranged on the end face of the clamping end 330; when the clamping end 330 approaches the fixed end 200, the first groove and the second groove can tightly hold the pin shaft, so as to clamp and fix the pin shaft.

[0037] Based on the above structure, the working process of the pin shaft clamping device of the embodiment is as follows:

[0038] Place the two pin shafts in the first grooves of the two fixed ends 200 respectively, start the cylinder, the cylinder drives the column 311 to rise, the column 311 drives the two clamping ends 330 to slide and approach the corresponding fixed ends 200 through the two connecting rods 321, until the two pin shafts are clamped.

[0039] After the milling processing of the two pin shafts is completed, start the cylinder, the cylinder drives the column 311 to descend, so that the two clamping ends 330 move away from the corresponding fixed ends 200 to release the two pin shafts, and the two pin shafts can be taken off for clamping and processing of the next two pin shafts.

[0040] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pin clamping device, characterized in that, include: Base (100); Two fixed ends (200) are respectively fixed on the base (100), and each of the two fixed ends (200) is provided with a first positioning part (201). The clamping assembly (300) includes a power unit (310), a transmission unit (320), and two clamping ends (330); each of the two clamping ends (330) is provided with a second positioning part (301), and a guide mechanism is provided between the two clamping ends (330) and the base (100); the power unit (310) is located on the base (100), and the transmission unit (320) is located between the power unit (310) and the two clamping ends (330); The power unit (310) can drive the two clamping ends (330) to slide along the guiding direction of the guiding mechanism, so that the second positioning part (301) clamps the pin with the corresponding first positioning part (201).

2. The pin clamping device according to claim 1, characterized in that, The base (100) includes a base plate (110), an upright plate (120), and two mounting plates (130); the upright plate (120) is perpendicular to the base plate (110), and the two mounting plates (130) are perpendicular to the base plate (110) and the upright plate (120), and are respectively fixed at both ends of the upright plate (120); the two fixed ends (200) are respectively provided on the inner side surfaces of the two mounting plates (130).

3. The pin clamping device according to claim 2, characterized in that, The guiding mechanism includes a guide rail (410) fixed on the upright plate (120) and two sliders (420) respectively fixed on the clamping end (330), the two sliders (420) being able to slide on the guide rail (410).

4. The pin clamping device according to claim 2, characterized in that, The power unit (310) is a cylinder fixed on the base plate (110) and located between the two fixed ends (200), and the extension and retraction direction of the cylinder's extension and retraction end is perpendicular to the guiding direction of the guiding mechanism.

5. The pin clamping device according to claim 4, characterized in that, The transmission unit (320) includes two connecting rods (321) that correspond one-to-one with the two clamping ends (330). One end of the two connecting rods (321) is hinged to the telescopic end, and the other end of the two connecting rods (321) is hinged to the corresponding clamping end (330).

6. The pin clamping device according to claim 5, characterized in that, The telescopic end is slidably provided with a sliding member (500), and the sliding direction of the sliding member (500) is parallel to the sliding direction of the clamping end (330); the ends of the two connecting rods (321) away from the corresponding clamping ends (330) are respectively hinged to the two ends of the sliding member (500).

7. The pin clamping device according to claim 6, characterized in that, The telescopic end is provided with a dovetail groove (302) that extends through the telescopic end along the sliding direction of the clamping end (330). The sliding member (500) includes a dovetail block (510) slidably disposed in the dovetail groove (302) and a connecting plate (520) fixed on the top of the dovetail block (510). The two connecting rods (321) are respectively hinged to the connecting plate (520).

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