Hydraulic self-centering vice

Abstract

The utility model provides a hydraulic self-centering jaw vice, which belongs to the field of jaw vices and comprises a strip-shaped seat, strip-shaped grooves are arranged on two sides of the strip-shaped seat, two groups of moving parts are slidably connected to the inner walls of the two strip-shaped grooves, the inner walls of the two groups of moving parts are connected with two sides of two moving seats in a clamping manner, and moving grooves are arranged at the tops of the moving seats. The two oil inlet nozzles feed hydraulic oil into the two driving oil cylinders, the output ends of the two driving oil cylinders drive the two guide sliding blocks to move on the inner walls of the moving grooves, the two guide sliding blocks drive the two sets of guide protrusions to move on the inner walls of the two guide grooves, and therefore the moving process is limited; and the guide sliding blocks can be lubricated in the moving process in cooperation with grease nipples, the two guide sliding blocks drive the clamping structures on the tops to move till the two first clamping grooves and the second clamping grooves in the two mounting blocks clamp the workpiece, and the clamping sensitivity under driving of the jaw vice hydraulic structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of vises, specifically a hydraulic self-centering vise. Background Technology

[0002] A vise is a general-purpose clamping tool used to hold workpieces. It is a common accessory for milling machines and drilling machines, fixed to the machine tool's worktable for cutting operations. It is an essential tool in fitter's workshops. In machining, vises are commonly used to clamp workpieces such as chamfering the ends of shaft parts, drilling center holes, and milling outer diameters. A search reveals a hydraulic self-centering vise disclosed in application number CN202223487510.5, which describes a vise including a fixed connecting seat, a vise centering structure connected to the end face of the fixed connecting seat, clamping blocks symmetrically connected to both sides of the fixed connecting seat and the vise centering structure, and a movable connecting seat connected to the end face of the fixed connecting seat. A drive cylinder is connected to the inner cavity of the movable connecting seat, and a guide is provided on the end face of the movable connecting seat. The present invention relates to a hydraulic self-centering vise, which uses a centering structure within a hydraulic self-centering vise. This structure utilizes a drive cylinder within the centering structure to automatically clamp the workpiece via a transmission mechanism. This design allows for automatic clamping and loosening of the workpiece during use, making it very convenient and solving the problem of not being able to control the clamping and loosening of the vise hydraulically. However, the above description has the following drawbacks in practical use: While the vise uses a drive cylinder to move two clamping blocks to hold the workpiece, the clamping slots of the clamping blocks cannot fix different workpieces, limiting the device's usability and requiring frequent replacement of different clamping blocks. Furthermore, the structure lacks adjustment and auxiliary functions. Therefore, a more practical hydraulic self-centering vise is needed. Utility Model Content

[0003] The purpose of this invention is to provide a hydraulic self-centering vise to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic self-centering vise, comprising: a strip-shaped seat, wherein strip-shaped grooves are provided on both sides of the strip-shaped seat, and two sets of moving parts are slidably connected to the inner walls of the two strip-shaped grooves, wherein the inner walls of the two sets of moving parts are engaged with the two sides of the two moving seats, and a moving groove is provided on the top of the moving seat;

[0005] The hydraulic assembly includes drive cylinders installed on both sides of the bottom of the inner wall of the moving groove. The output ends of the two drive cylinders are provided with guide sliders. The edges of both sides of the two guide sliders are provided with guide protrusions. The surfaces of the two sets of guide protrusions are slidably connected to the guide grooves opened on both sides of the inner wall of the moving groove.

[0006] An adjustable clamping assembly includes a fixed shaft mounted on the top of two guide sliders. The surface of the fixed shaft is rotatably connected to a bushing at the bottom of a fixed plate. A mounting block is provided on the top of the fixed plate. A groove is provided in the middle of the top of the mounting block. A plurality of insertion holes are provided on the inner wall of the groove. The inner walls of the plurality of insertion holes are threadedly connected to a plurality of positioning holes on the top of the fixed plate by means of pins. A first clamping groove and a second clamping groove are respectively provided at both ends of the mounting block.

[0007] As a preferred embodiment of this utility model: the surfaces at both ends of the fixing plate are provided with slots, the inner walls of the two slots are provided with mounting shafts, the surfaces of the two mounting shafts are fitted with limiting blocks, the surfaces of the limiting blocks are provided with a plurality of limiting holes, and the inner walls of the plurality of limiting holes are threadedly connected to the slots on both sides of the guide slider by limiting pins.

[0008] As a preferred embodiment of this utility model: auxiliary blocks are provided in the middle of the inner walls of the two moving slots, and limiting blocks are provided on the edges of both sides of the inner walls of the two moving slots. The two limiting blocks are located above the two driving cylinders.

[0009] As a preferred embodiment of this utility model, a grease nipple is provided in the middle of one side of each of the two guide sliders.

[0010] As a preferred embodiment of this utility model, an oil inlet is provided in the middle of one side of each of the two drive cylinders.

[0011] As a preferred embodiment of this utility model, a wear-resistant washer is provided between the bottom of the bushing and the top of the guide slider.

[0012] As a preferred embodiment of this utility model: both sides of the top of the strip seat are provided with positioning scale grooves, and the surfaces of the two sets of moving parts are threadedly connected to the two sides of the two moving seats by a number of bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) Hydraulic oil is fed into two drive cylinders through two inlet nozzles. The output ends of the two drive cylinders drive two guide sliders to move on the inner wall of the moving groove. The two guide sliders drive two sets of guide protrusions to move on the inner wall of the two guide grooves, thereby limiting the movement process. The grease nipple can be used to lubricate the movement process of the guide sliders. The two guide sliders drive the clamping structure at the top to move until the two first clamping grooves and the second clamping groove on the two mounting blocks clamp the workpiece, thereby improving the clamping sensitivity under the hydraulic structure drive of the vise.

[0015] (2) By separating the two sets of limiting blocks from the two guide sliders and rotating the limiting blocks on the mounting shaft surface of the inner wall of the slot, the subsequent structural adjustment is avoided. The two fixed plates and the two bushings rotate on the end faces of the two fixed shafts. The wear-resistant washers can prevent damage to the structural connection. The two fixed plates drive the two mounting blocks at the top to rotate until the opposite end of the two mounting blocks changes direction. Then, insert several limiting pins into several limiting holes and slots to complete the limiting fixation between the two fixed plates and the two guide sliders. According to the clamping needs, move the mounting blocks on the top of the fixed plates. When the appropriate position is reached, insert several pins into several insertion holes and positioning holes to adjust the position of the mounting blocks on the fixed plates, so as to further improve the clamping effect of the hydraulic self-centering vise. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the hydraulic component and the adjusting clamping component of this utility model;

[0019] Figure 4 This is a schematic diagram of the adjustment and clamping component of this utility model.

[0020] In the diagram: 1. Strip seat; 11. Strip groove; 12. Moving part; 13. Moving seat; 14. Moving groove; 15. Guide groove; 16. Auxiliary stop; 17. Limit stop; 18. Positioning scale groove; 19. Bolt; 2. Hydraulic assembly; 21. Drive cylinder; 22. Guide slider; 23. Guide protrusion; 24. Hole groove; 25. Grease nipple; 26. Oil inlet; 27. Wear-resistant washer; 3. Adjusting clamping assembly; 31. Fixed shaft; 32. Fixed plate; 33. Bushing; 34. Mounting block; 35. Groove; 36. Insertion hole; 37. Pin; 38. Positioning hole; 39. First clamping groove; 310. Second clamping groove; 311. Groove opening; 312. Mounting shaft; 313. Limiting block; 314. Limiting hole; 315. Limiting pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-4 A hydraulic self-centering vise includes: a strip seat 1, strip grooves 11 are provided on both sides of the strip seat 1, two sets of moving parts 12 are slidably connected to the inner walls of the two strip grooves 11, the inner walls of the two sets of moving parts 12 are engaged with the sides of two moving seats 13, and a moving groove 14 is provided on the top of the moving seats 13.

[0023] Please see Figure 3 Hydraulic component 2 includes drive cylinders 21 installed on both sides of the bottom of the inner wall of the moving groove 14. The output ends of the two drive cylinders 21 are provided with guide sliders 22. The edges of the two guide sliders 22 are provided with guide protrusions 23. The surfaces of the two sets of guide protrusions 23 are slidably connected to the guide grooves 15 opened on both sides of the inner wall of the moving groove 14.

[0024] In practical use: the two oil inlets 26 deliver hydraulic oil into the two drive cylinders 21. The output ends of the two drive cylinders 21 drive the two guide sliders 22 to move on the inner wall of the moving groove 14. The two guide sliders 22 drive the two sets of guide protrusions 23 to move on the inner wall of the two guide grooves 15, thereby limiting the movement process. The grease nipple 25 can be used to lubricate the movement of the guide sliders 22. The two guide sliders 22 drive the clamping structure at the top to move until the two first clamping grooves 39 and the second clamping grooves 310 on the two mounting blocks 34 clamp different types of workpieces, improving the clamping sensitivity under the hydraulic structure drive of the vise.

[0025] Please see Figure 3 , Figure 4 The adjusting clamping assembly 3 includes a fixed shaft 31 mounted on the top of two guide sliders 22. The surface of the fixed shaft 31 is rotatably connected to the bushing 33 provided at the bottom of the fixed plate 32. The top of the fixed plate 32 is provided with a mounting block 34. A groove 35 is provided in the middle of the top of the mounting block 34. A plurality of insertion holes 36 are provided on the inner wall of the groove 35. The inner walls of the plurality of insertion holes 36 are threadedly connected to a plurality of positioning holes 38 provided on the top of the fixed plate 32 by means of pins 37. A first clamping groove 39 and a second clamping groove 310 are respectively provided at both ends of the mounting block 34.

[0026] The surfaces at both ends of the fixing plate 32 are provided with slots 311. The inner walls of the two slots 311 are provided with mounting shafts 312. The surfaces of the two mounting shafts 312 are fitted with limiting blocks 313. The surfaces of the limiting blocks 313 are provided with several limiting holes 314. The inner walls of the several limiting holes 314 are threadedly connected to the slots 24 on both sides of the guide slider 22 through limiting pins 315.

[0027] In practical use: Separate the two sets of limiting blocks 313 from the two guide sliders 22, and rotate the limiting blocks 313 on the surface of the mounting shaft 312 on the inner wall of the slot 311 to avoid affecting subsequent structural adjustments. The two fixing plates 32, together with the two bushings, rotate on the end faces of the two fixing shafts 31. With the help of wear-resistant washers 27, damage to the structural connection can be avoided. The two fixing plates 32 drive the two mounting blocks 34 at the top to rotate until the opposite end of the two mounting blocks 34 changes direction. Insert several limiting pins 315 into several limiting holes 314 and slots 24 to complete the limiting fixation between the two fixing plates 32 and the two guide sliders 22. According to the clamping requirements, move the mounting blocks 34 on the top of the fixing plates 32. When in a suitable position, insert several pins 37 into several insertion holes 36 and positioning holes 38 to adjust the position of the mounting blocks 34 on the fixing plates 32, so as to further improve the clamping effect of the hydraulic self-centering vise.

[0028] Please see Figure 2 Auxiliary blocks 16 are provided in the middle of the inner wall of the two moving grooves 14, and limit blocks 17 are provided on both sides of the inner wall of the two moving grooves 14. The two limit blocks 17 are located above the two driving cylinders 21.

[0029] In practical use: the auxiliary blocks 16 on the inner walls of the two moving slots 14 can prevent the two guide sliders 22 from colliding during movement, and the limit blocks 17 above the two drive cylinders 21 can restrict the two guide sliders 22 after they are reset, while also protecting the two drive cylinders 21.

[0030] Please see Figure 3 Each of the two guide sliders 22 has a grease nipple 25 located in the middle of one side.

[0031] In practical use: the two grease nipples 25 on the middle of one side of the two guide sliders 22 can be filled with lubricating oil to facilitate the lubrication of the guide sliders 22 moving the guide protrusions 23.

[0032] Please see Figure 3 Each of the two drive cylinders 21 has an oil inlet 26 located in the middle of one side.

[0033] In practical use: the two oil inlets 26 on the middle of one side of the two drive cylinders 21 make it easy to fill the cylinder body with hydraulic oil, so that the structure can drive the clamping structure on the two guide sliders 22 to clamp and fix different workpieces, avoiding the tediousness of manual adjustment.

[0034] Please see Figure 3 A wear-resistant washer 27 is provided between the bottom of the bushing 33 and the top of the guide slider 22.

[0035] In practical use: the wear-resistant washer 27 between the bottom of the bushing 33 and the top of the guide slider 22 can prevent wear from occurring during the rotation of the bushing 33 and the fixed shaft 31.

[0036] Please see Figure 2 The top of the bar seat 1 is provided with positioning scale grooves 18 on both sides, and the surfaces of the two sets of moving parts 12 are threadedly connected to the two sides of the two moving seats 13 by several bolts 19.

[0037] In practical use: several bolts 19 fix the two sets of moving parts 12 and the two moving seats 13 on both sides with threads, so that the two moving seats 13 can cooperate with the positioning scale groove 18 to drive the two sets of moving parts 12 to move in the strip groove 11 on both sides of the strip seat 1, and adjust the clamping distance.

[0038] In use, separate the two sets of limiting blocks 313 from the two guide sliders 22, and rotate the limiting blocks 313 on the surface of the mounting shaft 312 on the inner wall of the slot 311 to avoid affecting subsequent structural adjustments. The two fixing plates 32, in conjunction with the two bushings, rotate on the end faces of the two fixing shafts 31. The two fixing plates 32 drive the two mounting blocks 34 at the top to rotate until the opposite ends of the two mounting blocks 34 change orientation. Then, insert several limiting pins 315 into several limiting holes 314 and slots 24 to complete the limiting fixation between the two fixing plates 32 and the two guide sliders 22. Move the mounting blocks 34 on the top of the fixing plates 32 as needed for clamping. When in the appropriate position, insert several pins. 37 is inserted into several insertion holes 36 and positioning holes 38 to adjust the position of the mounting block 34 on the fixing plate 32. Two oil inlets 26 send hydraulic oil into two drive cylinders 21. The output ends of the two drive cylinders 21 drive two guide sliders 22 to move on the inner wall of the moving groove 14. The two guide sliders 22 drive two sets of guide protrusions 23 to move on the inner wall of the two guide grooves 15. With the help of grease nipples 25, the movement of the guide sliders 22 can be lubricated. The two guide sliders 22 drive the clamping structure at the top to move until the two first clamping grooves 39 and the second clamping grooves 310 on the two mounting blocks 34 clamp different types of workpieces, achieving the clamping effect of a high-hydraulic self-centering vise.

[0039] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic self-centering vise, characterized in that, include: A strip seat (1) has strip grooves (11) on both sides. Two sets of moving parts (12) are slidably connected to the inner walls of the two strip grooves (11). The inner walls of the two sets of moving parts (12) are engaged with the two sides of two moving seats (13). A moving groove (14) is provided on the top of the moving seat (13). Hydraulic assembly (2), the hydraulic assembly (2) includes drive cylinders (21) installed on both sides of the bottom of the inner wall of the moving groove (14), the output ends of the two drive cylinders (21) are provided with guide sliders (22), the edges of the two guide sliders (22) are provided with guide protrusions (23), and the surfaces of the two sets of guide protrusions (23) are slidably connected with the guide grooves (15) opened on both sides of the inner wall of the moving groove (14); Adjustable clamping assembly (3), the adjustable clamping assembly (3) includes a fixed shaft (31) mounted on the top of two guide sliders (22), the surface of the fixed shaft (31) is rotatably connected to the bushing (33) provided at the bottom of the fixed plate (32), the top of the fixed plate (32) is provided with a mounting block (34), the top of the mounting block (34) is provided with a groove (35) in the middle, the inner wall of the groove (35) is provided with a plurality of insertion holes (36), the inner walls of the plurality of insertion holes (36) are threadedly connected to the plurality of positioning holes (38) provided at the top of the fixed plate (32) by pins (37), and the two ends of the mounting block (34) are respectively provided with a first clamping groove (39) and a second clamping groove (310).

2. The hydraulic self-centering vise according to claim 1, characterized in that: The fixed plate (32) has slots (311) on both ends of its surface. The inner walls of the two slots (311) are provided with mounting shafts (312). The surfaces of the two mounting shafts (312) are fitted with limiting blocks (313). The surfaces of the limiting blocks (313) are provided with several limiting holes (314). The inner walls of the several limiting holes (314) are threadedly connected to the slots (24) on both sides of the guide slider (22) by limiting pins (315).

3. The hydraulic self-centering vise according to claim 1, characterized in that: Auxiliary blocks (16) are provided in the middle of the inner wall of the two moving grooves (14), and limiting blocks (17) are provided on both sides of the inner wall of the two moving grooves (14). The two limiting blocks (17) are located above the two driving cylinders (21).

4. A hydraulic self-centering vise according to claim 1, characterized in that: A grease nipple (25) is provided in the middle of one side of each of the two guide sliders (22).

5. A hydraulic self-centering vise according to claim 1, characterized in that: Oil inlets (26) are provided in the middle of one side of each of the two drive cylinders (21).

6. A hydraulic self-centering vise according to claim 1, characterized in that: A wear-resistant washer (27) is provided between the bottom of the bushing (33) and the top of the guide slider (22).

7. A hydraulic self-centering vise according to claim 1, characterized in that: The top of the strip seat (1) is provided with positioning scale grooves (18) on both sides, and the surfaces of the two sets of moving parts (12) are threadedly connected to the two sides of the two moving seats (13) by several bolts (19).

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