Hydraulic combination vice with limit sensing function

Abstract

The application discloses a hydraulic combined vice with limiting sensing function, comprising a base, a lower pulling jaw assembly, a fixed jaw assembly and a hydraulic cylinder; the lower pulling jaw assembly is arranged on the base, and the lower pulling jaw assembly comprises a translation block and a pulling mechanism; the base is provided with a limiting sensing device for detecting whether a workpiece is clamped; the limiting sensing device is located beside the lower pulling jaw assembly; the fixed jaw assembly is provided with a positioning sensing device for sensing the position of the workpiece and whether the workpiece exists on the fixed jaw assembly. Through the cooperation of the limiting sensing device and the positioning sensing device, the positioning sensing device can be used for sensing the position of the workpiece and whether the workpiece exists on the fixed jaw assembly, and the limiting sensing device can be used for detecting whether the workpiece is clamped, so that the versatility of the vice function is expanded, better automatic machining can be realized in cooperation with a machine tool, and convenience is brought to production operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vices, and particularly to a hydraulic combined vice with limiting and sensing functions. BACKGROUND

[0002] A vice is a tool that uses a screw or other mechanism to hold two jaws in a relative position to clamp an object. A vice generally consists of a base, a body, a fixed jaw, and a movable jaw, as well as a transmission mechanism that moves the movable jaw. Depending on the use, there are types such as bench vice and machine vice. The bench vice is installed on the bench and used by the bench worker to clamp the workpiece for sawing, filing, etc. The bench vice generally has a high and arched jaw, and the body can be rotated and fastened on the base. The machine vice is a machine tool accessory, also known as a flat jaw vice, and is generally installed on the workbench of a milling machine, drilling machine, shaper, surface grinder, etc. Compared with the bench vice, the machine vice has a wide and low jaw, a large clamping force, and high precision requirements. The machine vice can be divided into ordinary type and precision type according to the precision. The precision type is used for surface grinding machines, boring machines, etc. The machine vice can also be divided into rotary type with base, fixed type without base, and tiltable type, etc. according to the structure.

[0003] In order to improve the machining efficiency of workpieces, a multi-station vice has been developed, which can clamp multiple workpieces at the same time. The multi-station vice, as a commonly used clamping tool in machining, plays an important role in machining. However, the existing multi-station vice is manually locked and clamped during use. For example, the existing multi-station vice needs to be manually unlocked and locked for each clamping of the workpiece, which is time-consuming. Human factors lead to low clamping efficiency of the multi-station vice, and the clamping accuracy is greatly affected by human factors, which cannot meet the demand of high-efficiency production.

[0004] Therefore, the existing technology has improved the multi-station vice. For example, the hydraulic adjustable multi-station vice disclosed in Chinese patent (patent number 202220964296.9) uses a hydraulic cylinder to drive the lower pull block to move up and down, and then the lower pull block promotes the lateral movement of the translation block to cooperate with the fixed jaw assembly to achieve fast clamping of the workpiece. The clamping stability is good, the precision is high, the uncertainty factors of manual clamping are reduced, the time for single disassembly and assembly of the workpiece does not exceed 10 seconds, which greatly improves the efficiency of the machine tool clamping, which is several times that of manual clamping, saves labor and machine waiting gap, thereby improving the production and machining efficiency of the machine tool.

[0005] However, the above-mentioned hydraulic adjustable multi-station vice cannot detect whether the workpiece is clamped, cannot sense the position of the workpiece and whether there is a workpiece on the fixed jaw assembly, and the function of the vice is relatively single, which cannot be combined with the machine tool to achieve better automatic machining. Therefore, it is necessary to improve the current vice. SUMMARY

[0006] In view of the above, the present application aims at the defects of the prior art, and the main purpose is to provide a hydraulic combination vice with limiting sensing function, which can effectively solve the problem that the single function of the existing vice cannot be matched with the machine tool to realize better automatic processing.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] A hydraulic combination vice with limiting sensing function, comprising a base, a lower pull jaw assembly, a fixed jaw assembly and a hydraulic cylinder; the lower pull jaw assembly is arranged on the base, the lower pull jaw assembly comprises a translation block and a lower pull mechanism, the translation block is arranged on the base and can move laterally back and forth, the lower pull mechanism is arranged on the base and can move up and down and promote the translation block to move laterally outward; the fixed jaw assembly is arranged on the base and cooperates with the translation block to clamp and lock the workpiece, a clamping groove is formed between the fixed jaw assembly and the lower pull jaw assembly; the hydraulic cylinder is arranged on the base and drives the lower pull mechanism to move up and down; a limiting sensing device for detecting whether the workpiece is clamped is arranged on the base, and the limiting sensing device is located beside the lower pull jaw assembly; a positioning sensing device for sensing the position of the workpiece and whether there is a workpiece on the fixed jaw assembly is arranged on the fixed jaw assembly.

[0009] As a preferred scheme, the limiting sensing device comprises a fixed seat, a limiting switch, a toggle piece, a spring and a toggle rod; the fixed seat is fixed on the outer side of the base; the limiting switch is fixed on the fixed seat; the toggle piece is installed in the base and can swing up and down through a pin, the upper end of the toggle piece is located beside the lower pull mechanism and abuts against the lower pull mechanism, the lower pull mechanism moves up and down to control the toggle piece to swing up and down; the spring is connected between the lower end of the toggle piece and the base and promotes the toggle piece to reset; one end of the toggle rod is fixed on the toggle piece, the other end of the toggle rod extends out of the base and cooperates with the limiting switch, the toggle rod moves back and forth with the toggle piece to trigger or escape from the limiting switch, the structure is simple and the stability is good.

[0010] As a preferred scheme, an arc-shaped guide hole is formed in the fixed seat and extends obliquely up and down, the toggle rod moves back and forth in the arc-shaped guide hole, and the limiting switch is located beside the lower end of the arc-shaped guide hole, so that the toggle rod moves stably.

[0011] As a preferred scheme, the fixed seat is fixed on the outer side of the base through a plurality of first bolts, and the limiting switch is fixed on the fixed seat through a plurality of second bolts, the structure is simple and the disassembly and assembly are convenient.

[0012] As a preferred scheme, the positioning sensing device comprises a positioning rod, a positioning strip, a positioning pin and a position sensor; the positioning rod is fixed on the outer side of the fixed jaw assembly and extends longitudinally; the positioning strip extends transversely and is arranged on the positioning rod in a longitudinally and transversely adjustable position; the positioning pin and the position sensor are arranged side by side on the positioning strip and located outside the clamping groove, the positioning pin is used for adjusting the position of the workpiece, so that the workpiece is clamped in the middle position of the clamping groove as much as possible, the deformation of the vice during clamping is reduced, and the precision of the workpiece and the practicability of the vice are further ensured, and the position sensor is used for sensing whether the workpiece is placed on the fixed jaw assembly.

[0013] As a preferred scheme, a C-shaped piece is sleeved on the positioning rod, a fixing hole is formed at the clamping opening of the C-shaped piece, a strip-shaped hole is formed at one end of the positioning strip, and a first screw is screwed and connected with the fixing hole through the strip-shaped hole, so that the structure is simple and the installation and adjustment are convenient.

[0014] As a preferred scheme, a fixing piece is arranged on the positioning strip, both ends of the fixing piece are fixed to the other end of the positioning strip by a second screw to clamp and fix the positioning pin and the position sensor, so that the structure is simple and the installation and adjustment are convenient.

[0015] As a preferred scheme, first outer clamping sleeves are fixed at both ends of the top of the translation block, first knurls are distributed on the first outer clamping sleeves, so as to increase the friction between the first outer clamping sleeves and the workpiece, and further ensure the clamping precision of the workpiece.

[0016] As a preferred scheme, second outer clamping sleeves are fixed at both ends of the top of the fixed jaw assembly, second knurls are distributed on the second outer clamping sleeves, so as to increase the friction between the second outer clamping sleeves and the workpiece, and further ensure the clamping precision of the workpiece.

[0017] Compared with the prior art, the present application has obvious advantages and beneficial effects, specifically, from the above technical scheme, it can be known that:

[0018] By cooperating the limiting sensing device and the positioning sensing device, the positioning sensing device can be used for sensing the position of the workpiece and whether there is a workpiece on the fixed jaw assembly, and the limiting sensing device can be used for detecting whether the workpiece is clamped, so that the versatility of the vice function is expanded, better automatic machining can be realized by cooperating with the machine tool, and convenience is brought to production operation.

[0019] In order to more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of a preferred embodiment of the present application;

[0021] Figure 2 is a perspective view of another aspect of the preferred embodiment of the present application;

[0022] Figure 3 is a front view of the preferred embodiment of the present application;

[0023] Figure 4 is a top view of the preferred embodiment of the present application;

[0024] Figure 5 is a sectional view of the preferred embodiment of the present application;

[0025] Figure 6 is another sectional view of the preferred embodiment of the present application.

[0026] Brief Description of the Drawings:

[0027] 10, base 11, T-shaped sliding slot

[0028] 12, rack 13, concave cavity

[0029] 101, clamping groove 20, pull-down jaw assembly

[0030] 21, translation block 22, pull-down mechanism

[0031] 23, first outer sleeve 24, third screw

[0032] 201, first knurling 30, fixed jaw assembly

[0033] 31, second outer sleeve 32, fourth screw

[0034] 301, second knurling 40, hydraulic cylinder

[0035] 50, limit sensing device 51, fixed seat

[0036] 52, limit switch 53, actuating piece

[0037] 54, spring 55, actuating rod

[0038] 56, first bolt 57, second bolt

[0039] 58, pin 501, arc-shaped guide hole

[0040] 60, positioning sensing device 61, positioning rod

[0041] 62, positioning strip 63, positioning pin

[0042] 64, position sensor 65, C-shaped piece

[0043] 66, first screw 67, fixed piece

[0044] 68. Second screw 601, bar-shaped hole. DETAILED DESCRIPTION

[0045] Referring to Figures 1 to 6 The specific structure of the preferred embodiment of the present application is shown in the drawing, which comprises a base 10, a downward pulling jaw assembly 20, a fixed jaw assembly 30 and a hydraulic cylinder 40.

[0046] The top surface of the base 10 is concavely provided with an inverted T-shaped sliding groove 11, which extends horizontally, and the top surface of the base 10 is formed with two racks 12, which both extend horizontally and are respectively located at the two sides of the inverted T-shaped sliding groove 11. The bottom of the base 10 is formed with a concave cavity 13, which is communicated with the inverted T-shaped sliding groove 11.

[0047] The downward pulling jaw assembly 20 is arranged on the base 10, which comprises a translation block 21 and a downward pulling mechanism 22. The translation block 21 is arranged on the base 10 to move laterally back and forth, and the downward pulling mechanism 22 is arranged on the base 10 to move up and down and to promote the translation block 21 to move laterally outward. The downward pulling jaw assembly 20 is installed in cooperation with the inverted T-shaped sliding groove 11 and the two racks 12. The downward pulling jaw assembly 20 can be a one-way downward pulling jaw assembly or a two-way downward pulling jaw assembly. In this embodiment, the downward pulling jaw assembly 20 is a two-way downward pulling jaw assembly, and there are two downward pulling jaw assemblies 20.

[0048] The fixed jaw assembly 30 is arranged on the base 10 and cooperates with the translation block 21 to clamp and lock the workpiece, and a clamping groove 101 is formed between the fixed jaw assembly 30 and the downward pulling jaw assembly 20. In this embodiment, the fixed jaw assembly 30 is installed in cooperation with the inverted T-shaped sliding groove 11 and the two racks 12. The fixed jaw assembly 30 can be a one-way fixed jaw assembly or a two-way fixed jaw assembly. In this embodiment, the fixed jaw assembly 30 is multiple, which is respectively located at the two sides of the corresponding downward pulling jaw assembly 20.

[0049] The hydraulic cylinder 40 is arranged on the base 10 and drives the downward pulling mechanism 22 to move up and down. In this embodiment, the hydraulic cylinder 40 is located in the concave cavity 13, and one hydraulic cylinder 40 is arranged for the downward pulling mechanism 22 of each downward pulling jaw assembly 20. The hydraulic cylinder 40 is a double-rod hydraulic cylinder.

[0050] The base 10 is provided with a limit sensing device 50 for detecting whether the workpiece is clamped or not, and the limit sensing device 50 is located beside the lower pull jaw assembly 20. Specifically, the limit sensing device 50 comprises a fixing seat 51, a limit switch 52, a toggle piece 53, a spring 54 and a toggle rod 55. The fixing seat 51 is fixed on the outer side of the base 10, and in the embodiment, the fixing seat 51 is fixed on the outer side of the base 10 by a plurality of first bolts 56. The limit switch 52 is fixed on the fixing seat 51, and in the embodiment, the limit switch 52 is fixed on the fixing seat 51 by a plurality of second bolts 57. The toggle piece 53 is swingably installed in the recess 13 of the base 10 by a pin 58, and the upper end of the toggle piece 53 is located beside the lower pull mechanism 22 and abuts against the lower pull mechanism 22. The lower pull mechanism 22 moves up and down to control the toggle piece 53 to swing up and down. The spring 54 is connected between the lower end of the toggle piece 53 and the base 10 and urges the toggle piece 53 to return. One end of the toggle rod 55 is fixed on the toggle piece 53, and the other end of the toggle rod 55 extends out of the base 10 and cooperates with the limit switch 52. The toggle rod 55 moves back and forth with the toggle piece 53 to trigger or disengage the limit switch 52. In the embodiment, an arc-shaped guide hole 501 is formed in the fixing seat 51 and extends obliquely up and down. The toggle rod 55 moves back and forth in the arc-shaped guide hole 501, and the limit switch 52 is located beside the lower end of the arc-shaped guide hole 501.

[0051] The positioning sensing device 60 is arranged on the fixed jaw assembly 30 to sense the position of the workpiece and whether there is a workpiece on the fixed jaw assembly 30. Specifically, the positioning sensing device 60 comprises a positioning rod 61, a positioning strip 62, a positioning pin 63 and a position sensor 64; the positioning rod 61 is fixed on the outer side of the fixed jaw assembly 30 and extends longitudinally; the positioning strip 62 extends transversely and is arranged on the positioning rod 61 in a longitudinally and transversely adjustable position; the positioning pin 63 and the position sensor 64 are arranged side by side on the positioning strip 62 and located outside the clamping groove 101, the positioning pin 63 is used to adjust the position of the workpiece, so that the workpiece is clamped as much as possible in the middle position of the clamping groove 101, reduces the deformation in the process of clamping the vice, and further guarantees the precision of the workpiece and the practicability of the vice. In the embodiment, a C-shaped piece 65 is sleeved on the positioning rod 61, a fixing hole (not shown in the figure) is formed at the clamping opening of the C-shaped piece 65, a strip-shaped hole 601 is formed at one end of the positioning strip 62, the strip-shaped hole 601 extends transversely, and a first screw 66 is screwed and connected with the fixing hole through the strip-shaped hole 601 to fix the C-shaped piece 65 on the positioning rod 61, and at the same time, the positioning strip 62 is fixed on the C-shaped piece 65. In addition, the positioning strip 62 is provided with a fixing piece 67, both ends of the fixing piece 67 are fixed to the other end of the positioning strip 62 by a second screw 68 to clamp and fix the positioning pin 63 and the position sensor 64, so as to adjust and fix the longitudinal position of the positioning pin 63 and the position sensor 64.

[0052] The top of the translation block 21 is fixed with a first outer sleeve 23 at both ends, the first outer sleeve 23 is distributed with a first knurled 201 to increase the friction between the first outer sleeve 23 and the workpiece, further guarantee the clamping precision of the workpiece, and the first outer sleeve 23 is fixed on the translation block 21 by a third screw 24. In addition, the top of the fixed jaw assembly 30 is fixed with a second outer sleeve 31 at both ends, the second outer sleeve 31 is distributed with a second knurled 301 to increase the friction between the second outer sleeve 31 and the workpiece, further guarantee the clamping precision of the workpiece, and the second outer sleeve 31 is fixed on the top of the fixed jaw assembly 30 by a fourth screw 32.

[0053] The working principle of the embodiment is described as follows:

[0054] In use, the hydraulic combination vice is fixed on the machine tool, and the hydraulic cylinder 40, the limit switch 52 and the position sensor 64 are all connected to the control system of the machine tool, and in the original state, the toggle lever 55 is kept from the limit switch 52, and the limit switch 52 will give the control system an automatic clamping contact signal, showing that the vice is in the state of not clamping the workpiece; first, adjust the position of the positioning strip 62 to make the workpiece find a suitable machining position; then, place the workpiece on the lower pull jaw assembly 20 and the fixed jaw assembly 30 and in the clamping groove 101; when the position sensor 64 is triggered by the workpiece, it indicates that the workpiece has been placed on the fixed jaw assembly 30; then, the control system controls the hydraulic cylinder 40 to work, and the hydraulic cylinder 40 drives the lower pull mechanism 22 to move downward, so that the translation block 21 moves outward laterally to clamp the workpiece between the translation block 21 and the fixed jaw assembly 30; when the lower pull mechanism 22 moves downward, the upper end of the toggle plate 53 is driven by the lower pull mechanism 22 to move downward, and the toggle lever 55 moves with the toggle plate 53, so that the toggle lever 55 is separated from the limit switch 52 and no longer contacts the limit switch 52; at this time, the limit switch 52 will give the control system an automatic clamping disengagement signal, showing that the vice has clamped the workpiece and is in the working state, so as to detect whether the vice clamps the workpiece, further expand the versatility of the vice function, and further improve the automatic machining function of the vice in the machine tool.

[0055] The design of the present application focuses on: by cooperating with the limit sensing device and the positioning sensing device, the positioning sensing device can be used to sense the position of the workpiece and whether there is a workpiece on the fixed jaw assembly, and the limit sensing device can detect whether the workpiece is clamped, so as to expand the versatility of the vice function, and realize better automatic machining with the machine tool, which brings convenience to production operation.

[0056] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application, so any slight modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A hydraulic combination vise with limit sensing function, comprising a base, a pull-down jaw assembly, a fixed jaw assembly, and a hydraulic cylinder; the pull-down jaw assembly is disposed on the base, and includes a translation block and a pull-down mechanism; the translation block is movably disposed on the base laterally back and forth, and the pull-down mechanism is movably disposed on the base vertically and causes the translation block to move laterally outward; the fixed jaw assembly is disposed on the base and cooperates with the translation block to clamp and lock the workpiece, and a clamping groove is formed between the fixed jaw assembly and the pull-down jaw assembly; the hydraulic cylinder is disposed on the base and drives the pull-down mechanism to move vertically; characterized in that: The base is equipped with a limit sensor for detecting whether the workpiece is clamped. The limit sensor is located on the side of the pull-down jaw assembly. The limit sensor includes a fixed base, a limit switch, a toggle piece, a spring, and a toggle rod. The fixed base is fixed to the outer surface of the base. The limit switch is fixed to the fixed base. The toggle piece is mounted in the base and can swing up and down by a pin. The upper end of the toggle piece is located on the side of the pull-down mechanism and abuts against the pull-down mechanism. The pull-down mechanism moves up and down to control the swing of the toggle piece. The spring is connected between the lower end of the toggle piece and the base and causes the toggle piece to return to its original position. One end of the toggle rod is fixed to the toggle piece, and the other end of the toggle rod extends out of the base and cooperates with the limit switch. The toggle rod triggers or disengages from the limit switch as the toggle piece moves back and forth. The fixed jaw assembly is equipped with a positioning sensing device for sensing the position of the workpiece and whether there is a workpiece on the fixed jaw assembly. The positioning sensing device includes a positioning rod, a positioning strip, a positioning pin, and a position sensor. The positioning rod is fixed to the outer surface of the fixed jaw assembly and extends longitudinally. The positioning strip extends laterally and is positioned on the positioning rod in a way that can be adjusted longitudinally and laterally. The positioning pin and the position sensor are arranged side by side on the positioning strip and are located on the outside of the clamping groove.

2. The hydraulic combination vise with limit sensing function according to claim 1, characterized in that: The fixed base has an arc-shaped guide hole that extends vertically at an angle. The actuating rod moves back and forth along the arc-shaped guide hole. The limit switch is located on the side of the lower end of the arc-shaped guide hole.

3. The hydraulic combination vise with limit sensing function according to claim 1, characterized in that: The mounting base is fixed to the outer side of the base by a plurality of first bolts, and the limit switch is fixed to the mounting base by a plurality of second bolts.

4. The hydraulic combination vise with limit sensing function according to claim 1, characterized in that: A C-shaped component is fitted onto the positioning rod. A fixing hole is provided at the clamping end of the C-shaped component. A strip-shaped hole is provided at one end of the positioning strip. The strip-shaped hole extends laterally. A first screw passes through the strip-shaped hole and is screwed into the fixing hole for fixation.

5. The hydraulic combination vise with limit sensing function according to claim 4, characterized in that: The positioning strip is provided with a fixing component, both ends of which are fixed to the other end of the positioning strip by a second screw to clamp and fix the positioning pin and the position sensor.

6. The hydraulic combination vise with limit sensing function according to claim 1, characterized in that: Both ends of the top of the translation block are fixed with a first outer sleeve, and the first outer sleeve has a first rolling pattern distributed on it.

7. The hydraulic combination vise with limit sensing function according to claim 1, characterized in that: The top two ends of the fixed jaw assembly are each fixed with a second outer sleeve, and the second outer sleeve is provided with a second knurling.

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