Pneumatic vice

Abstract

The utility model relates to a pneumatic jaw vice which comprises a base, a lifting piston, an elastic lifting block, an elastic sliding block and a movable jaw. A closed air chamber is arranged in the base, the lifting piston is arranged in the closed air chamber in a lifting mode, a limiting sliding groove is formed in the base, a guide channel is formed between the limiting sliding groove and the closed air chamber, the elastic lifting block is arranged in the limiting sliding groove in a lifting mode, and the lower end of the elastic lifting block penetrates through the guide channel and is fixedly connected with the lifting piston. The two sides of the elastic lifting block are each provided with an elastic sliding block in a sliding mode, and each elastic sliding block is provided with the corresponding movable jaw. Inclined guide grooves with opposite inclination angles are formed in the two sides of the elastic lifting block respectively, driving shafts matched with the inclined guide grooves are arranged on the two elastic sliding blocks respectively, and the two driving shafts are movably arranged in the inclined guide grooves in the two sides of the elastic lifting block respectively. According to the pneumatic vice, opening and closing of the two vice jaws are pneumatically controlled, good positioning of a workpiece is achieved, the center positioning precision is high, operation is convenient and fast, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vises, in particular to a pneumatic vise. Background Art

[0002] In the field of mechanical parts processing, vises are often used as fixtures. Existing vises typically consist of a base and two jaws. One jaw is fixed to the base, serving as the fixed jaw; the other jaw slides freely on the base, serving as the movable jaw. When clamping a workpiece, the movable jaw slides toward the fixed jaw, allowing one side of the workpiece to fit tightly against the fixed jaw.

[0003] Because the vise uses one edge of the workpiece as the machining reference, manual alignment is required when the machining process requires the center of the workpiece as the reference. This increases machining preparation time, reduces machining accuracy, is inconvenient to operate, and reduces production efficiency. In addition, when clamping the workpiece, the existing vise requires manual rotation of the screw to drive the movable jaw to move, which increases labor intensity. Utility Model Content

[0004] Based on this, the purpose of the utility model is to overcome the shortcomings of the existing technology and provide a pneumatic vise that achieves good positioning of the workpiece by pneumatically controlling the opening and closing of the two jaws, with high center positioning accuracy, convenient operation, and improved production efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The cam is adapted to move the tensioner upwards and downwards to move the tensioner upwards so as to allow the tensioner to move in a direction of rotation relative to the load-carrying mechanism.

[0007] As an embodiment, a fixed jaw is provided above the limiting slide groove, and the two sides of the fixed jaw are respectively spaced from the two movable jaws, and the two movable jaws and the two sides of the fixed jaw form a clamping space with adjustable width.

[0008] As an embodiment, the tensioning slider is provided with a first screw hole along the vertical direction, and the bottom of the movable jaw is recessed upward to provide a first threaded hole, and the first threaded hole corresponds to the first screw hole, so that the tensioning slider and the movable jaw are connected by a screw passing through the first screw hole and then screwed into the first threaded hole of the movable jaw.

[0009] As an embodiment, a cross groove is provided on the top of the tensioning slider, and a cross protrusion adapted to the cross groove is provided on the bottom of the movable jaw, and the cross protrusion is nested in the cross groove.

[0010] As an embodiment, the movable jaw includes a jaw base and a toothed hard jaw, the jaw base is arranged on the tensioning slider, and the toothed hard jaw is detachably arranged on the jaw base.

[0011] As an embodiment, the top of the jaw base is provided with a straight groove that is compatible with the toothed hard jaw, and a plurality of second threaded holes are provided at intervals at the bottom of the straight groove; the toothed hard jaw is provided with a plurality of second screw holes at positions corresponding to the plurality of second threaded holes, and the lower end of the toothed hard jaw is embedded in the straight groove, and the toothed hard jaw is screwed into the second threaded hole after the screw passes through the second screw hole.

[0012] As an embodiment, serrated rack jaws are respectively provided on both sides of the toothed hard jaws.

[0013] As an implementation manner, the oblique guide grooves on both sides of the elastic lifting block are inclined outwards respectively, and the inclination angle of the oblique guide grooves is 60° to 75°.

[0014] As an embodiment, a mounting through hole is provided on the base, and the mounting through hole is used for assembly and fixation with the mounting object.

[0015] In one embodiment, a spring-loaded steel ball is provided in the limiting chute, and a guide groove is provided at the bottom of the tension slider along the length of the limiting chute. The guide groove is slidably mounted on the spring-loaded steel ball. Thus, the spring-loaded steel ball can limit the sliding direction of the tension slider, preventing the tension slider from shifting sideways.

[0016] Compared with the traditional technology, the pneumatic vise described in the utility model has the following beneficial effects:

[0017] The present invention is connected to an external air pump through an air source interface so that the lifting piston can move up and down in a closed air chamber, thereby driving the tension and tension lifting block to move up and down synchronously. During the lifting and lowering process of the tension and tension lifting block, the oblique guide grooves on both sides are used to drive the two tension and tension sliders to move relative to or away from each other in a straight line in the limiting slide groove, so as to realize the opening and clamping between the two movable jaws. Furthermore, the present invention enables the position of the toothed hard jaws to be adjusted more flexibly through the detachable connection between the jaw base and the toothed hard jaws, effectively improving the applicability of the toothed hard jaws; and, through the movable clamping space formed between the fixed jaws and the two movable jaws, two workpieces can also be clamped at the same time, further improving the practicality of the pneumatic vise of the present invention. Therefore, the pneumatic vise provided by the present invention is used to position the workpiece, which can realize the function of rapid center positioning and clamping of the workpiece, with high center positioning accuracy, convenient operation, high production efficiency and low labor intensity.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the structural diagrams of the pneumatic vise of the utility model;

[0020] Figure 2 This is the second structural diagram of the pneumatic vise of the utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the pneumatic vise of the utility model;

[0022] Figure 4 This is one of the exploded schematic diagrams of the pneumatic vise of the utility model;

[0023] Figure 5 This is the second exploded schematic diagram of the pneumatic vise of the present utility model;

[0024] Figure 6 The utility model is a schematic structural diagram of the tension lifting block and the tension sliding block of the pneumatic vise.

[0025] Description of reference numerals:

[0026] 10. Base; 11. Closed air chamber; 12. Limiting slide; 13. Air source interface; 14. Mounting through hole; 15. Anti-slip spring steel ball; 20. Lifting piston; 30. Elastic and tightening lifting block; 31. Oblique guide groove; 40. Elastic and tightening slider; 41. Drive shaft; 42. Cross groove; 50. Movable jaw; 51. Jaw base; 52. Toothed hard jaw; 53. Slotted groove; 60. Fixed jaw. DETAILED DESCRIPTION

[0027] To further illustrate various embodiments, this utility model is provided with accompanying drawings. These drawings form part of the disclosure of this utility model and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will be able to understand other possible implementations and the advantages of this utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0029] See also Figures 1 to 6 ; This embodiment provides a pneumatic vise, including a base 10, a lifting piston 20, a tension lifting block 30, a tension slider 40, and a movable jaw 50; a closed air chamber 11 is provided in the base 10, and the lifting piston 20 can be lifted and lowered in the closed air chamber 11, and an air source interface 13 connected to the closed air chamber 11 is provided on the base 10; a limiting slide 12 is provided on the base 10, and a guide channel for the tension lifting block 30 to pass through is provided between the limiting slide 12 and the closed air chamber 11, and the tension lifting block 30 can be lifted and lowered in the limiting slide 12, and the lower end of the tensioning and lifting block 30 passes through the guide channel and is fixedly connected to the lifting piston 20; the tensioning sliders 40 are slidably provided on both sides of the tensioning and lifting block 30, and each tensioning slider 40 is provided with the movable jaw 50; the two sides of the tensioning and lifting block 30 are respectively provided with oblique guide grooves 31 with opposite inclination angles, and the two tensioning sliders 40 are respectively provided with drive shafts 41 adapted to the oblique guide grooves 31, and the drive shafts 41 of the two tensioning sliders 40 are respectively movably provided in the oblique guide grooves 31 on both sides of the tensioning and lifting block 30.

[0030] The tensioning slider 40 is vertically penetrated by a first screw hole, and the bottom of the movable jaw 50 is recessed upward to form a first threaded hole. The first threaded hole corresponds to the first screw hole, so that the tensioning slider 40 and the movable jaw 50 are connected by a screw passing through the first screw hole and then screwed into the first threaded hole of the movable jaw 50. In order to improve the stability and convenience between the tensioning slider 40 and the movable jaw 50, in this embodiment, a cross groove 42 is provided on the top of the tensioning slider 40, and a cross protrusion is provided on the bottom of the movable jaw 50 to match the cross groove 42, and the cross protrusion is nested in the cross groove 42.

[0031] Furthermore, the movable jaw 50 of this embodiment includes a jaw base 5110 and a toothed hard jaw 52. The jaw base 5110 is mounted on the tension slider 40, and the toothed hard jaw 52 is detachably mounted on the jaw base 5110. A slotted groove 53 is provided at the top of the jaw base 5110 to mate with the toothed hard jaw 52. A plurality of second threaded holes are spaced apart at the bottom of the slotted groove 53. The toothed hard jaw 52 has a plurality of second screw holes formed at positions corresponding to the plurality of second threaded holes. The lower end of the toothed hard jaw 52 is embedded in the slotted groove 53. Screws are passed through the second screw holes and then screwed into the second threaded holes. Furthermore, serrated rack jaws are provided on either side of the toothed hard jaw 52.

[0032] Optionally, the oblique guide grooves 31 on both sides of the elastic lifting block 30 are inclined outward, and the inclination angle of the oblique guide grooves 31 is 60° to 75°. In addition, the air source interface 13 of this embodiment includes a first interface and a second interface, wherein the first interface can communicate with the space between the lifting piston 20 and the upper part of the closed air chamber 11, and the second interface can communicate with the space between the lifting piston 20 and the lower part of the closed air chamber 11. In addition, to improve the sealing of the closed air chamber 11, a sealing ring is tightly installed between the elastic lifting block 30 and the guide channel to ensure the sealing of the space above the closed air chamber 11.

[0033] In this embodiment, the base 10 is provided with a mounting through hole 14, and the mounting through hole 14 is used for assembling and fixing with an installation object. In this way, the pneumatic vise of this embodiment can be quickly assembled on the installation object for use through the mounting through hole 14.

[0034] Optionally, in this embodiment, an anti-dropout spring steel ball 15 is provided in the limiting chute 12, and a guide groove is provided at the bottom of the tension slider 40 along the length of the limiting chute 12, and the guide groove is slidably mounted on the anti-dropout spring steel ball 15. Thus, the anti-dropout spring steel ball 15 can limit the sliding direction of the tension slider 40 to prevent the tension slider 40 from shifting sideways.

[0035] In addition, in order to improve the practical performance of the pneumatic vise of this embodiment, a fixed jaw 60 is provided above the limiting slide groove 12, and the two sides of the fixed jaw 60 are respectively spaced apart from the two movable jaws 50, and the two movable jaws 50 and the two sides of the fixed jaw 60 respectively form a clamping space with adjustable width.

[0036] Compared with conventional technologies, the present invention connects to an external air pump via an air source interface 13 so that the lifting piston 20 can move up and down within the closed air chamber 11, thereby driving the tensioning and tightening block 30 to move up and down synchronously. During the lifting and lowering of the tensioning and tightening block 30, the oblique guide grooves 31 on both sides are used to drive the two tensioning sliders 40 to move relative to or away from each other in a straight line in the limiting slide 12, thereby achieving the opening and clamping of the two movable jaws 50. Furthermore, the present invention provides a detachable connection between the jaw base 5110 and the toothed hard jaw 52, allowing the position of the toothed hard jaw 52 to be adjusted more flexibly, effectively improving the applicability of the toothed hard jaw 52. Furthermore, the movable clamping space formed between the fixed jaw 60 and the two movable jaws 50 can also clamp two workpieces at the same time, further improving the practicality of the pneumatic vise of the present invention. Therefore, the pneumatic vise provided by the utility model is used to position the workpiece, which can realize the function of rapid center positioning and clamping the workpiece, with high center positioning accuracy, convenient operation, high production efficiency and low labor intensity.

[0037] The above-described embodiments merely represent several embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the pneumatic vise. It should be noted that a person skilled in the art would be able to devise numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A pneumatic vise, characterized in that: It includes a base, a lifting piston, a loosening and tightening lifting block, a loosening and tightening slider, and a movable jaw; A closed air chamber is provided in the base, the lifting piston is movably provided in the closed air chamber, and an air source interface communicating with the closed air chamber is provided on the base; a limiting slide groove is provided on the base, and a guide channel for the elastic lifting block to pass through is provided between the limiting slide groove and the closed air chamber, the elastic lifting block is movably provided in the limiting slide groove, and the lower end of the elastic lifting block passes through the guide channel and is fixedly connected to the lifting piston; the elastic sliders are slidably provided on both sides of the elastic lifting block, and the movable jaws are provided on each elastic slider; Oblique guide grooves with opposite inclination angles are respectively provided on both sides of the elastic lifting block, and driving shafts adapted to the oblique guide grooves are respectively provided on the two elastic sliders, and the driving shafts of the two elastic sliders are movably arranged in the oblique guide grooves on both sides of the elastic lifting block.

2. The pneumatic vise according to claim 1, characterized in that: A fixed jaw is provided above the limiting slide groove, and both sides of the fixed jaw are spaced apart from the two movable jaws respectively, and the two movable jaws and both sides of the fixed jaw form a clamping space with adjustable width.

3. The pneumatic vise according to claim 1, characterized in that: The tensioning slider is provided with a first screw hole along the vertical direction, and the bottom of the movable jaw is recessed upward to provide a first threaded hole, and the first threaded hole corresponds to the first screw hole, so that the tensioning slider and the movable jaw are connected by a screw passing through the first screw hole and then screwed into the first threaded hole of the movable jaw.

4. The pneumatic vise according to claim 3, characterized in that: A cross groove is provided on the top of the tensioning slider, and a cross protrusion adapted to the cross groove is provided on the bottom of the movable jaw, and the cross protrusion is nested in the cross groove.

5. The pneumatic vise according to claim 1, characterized in that: The movable jaw includes a jaw base and a toothed hard jaw. The jaw base is arranged on the elastic slider, and the toothed hard jaw is detachably arranged on the jaw base.

6. The pneumatic vise according to claim 5, characterized in that: The top of the jaw base is provided with a straight groove that is compatible with the toothed hard jaw, and a number of second threaded holes are provided at intervals at the bottom of the straight groove; the positions of the toothed hard jaw corresponding to the second threaded holes are respectively provided with a number of second screw through holes, and the lower end of the toothed hard jaw is embedded in the straight groove, and the toothed hard jaw is screwed into the second threaded hole after the screw passes through the second screw through hole.

7. The pneumatic vise according to claim 5, characterized in that: Sawtooth rack jaws are respectively provided on both sides of the toothed hard jaws.

8. The pneumatic vise according to claim 1, characterized in that: The oblique guide grooves on both sides of the elastic lifting block are inclined outwards respectively, and the inclination angle of the oblique guide grooves is 60° to 75°.

9. The pneumatic vise according to claim 1, characterized in that: The base is provided with a mounting through hole, and the mounting through hole is used for assembling and fixing with the mounting object.

10. The pneumatic vise according to claim 1, characterized in that: An anti-slip spring steel ball is provided in the limiting slide groove, and a guide groove is provided at the bottom of the elastic slider along the length direction of the limiting slide groove, and the guide groove can be slidably mounted on the anti-slip spring steel ball.

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