A two-degree-of-freedom positioning composite slide rail assembly

Abstract

The present application relates to positioning device, disclose a kind of two degrees of freedom positioning composite slide rail assembly, including linear guide and positioning pin, linear guide is opened with semicircular slide rail groove along its length direction, and is opened with guide slot along slide rail groove;Positioning pin includes two groups of relative arrangement, and the workpiece to be positioned is clamped between two groups of the positioning pin;Wherein, positioning pin includes guide sliding mechanism and pin mechanism, guide sliding mechanism is located in slide rail groove and moves in direction along guide slot advances or retreats, pin mechanism is rotationally connected on the guide sliding mechanism, and pin mechanism is coaxially locked with guide sliding mechanism by locking mechanism.The slide rail assembly of the present application, not only can realize to along X, Y, Z axis one-way movement operation, and rotate the circumferential position of the workpiece to be positioned is adjusted, realizes the linear movement or / and rotation of the workpiece to be positioned two degrees of freedom convenient adjustment, improve its practicality.

Description

TECHNICAL FIELD

[0001] The present application relates to positioning device, especially to a two-degree-of-freedom positioning composite slide rail assembly. BACKGROUND

[0002] The conventional positioning slide rail can only move along the X, Y, Z axis to realize single-degree-of-freedom control, such as the "two-way positioning slide rail" disclosed in Chinese patent CN 106073242 A, which comprises an outer rail and an inner rail arranged in the outer rail, and the inner rail surface is provided with an actuator and a limiting device. By arranging multiple groups, the positioning slide rail can move in multiple directions in the space coordinates X, Y, Z axis. However, for some application scenarios, it is necessary to rotate and position the workpiece to be positioned along a single direction through a guide slide rail to meet the adjustment of multiple spatial degrees of freedom, such as measuring the roundness of the workpiece. The conventional guide device is difficult to meet the requirements, or needs to be disassembled and installed through a complex combination, which is not only inconvenient but also easy to lose control accuracy. SUMMARY

[0003] The purpose of the present application is to provide a two-degree-of-freedom positioning composite slide rail assembly which can not only realize one-way movement along the X, Y, Z axis, but also rotate and adjust the circumferential position of the workpiece to be positioned, thereby improving its practicability.

[0004] Technical scheme: The two-degree-of-freedom positioning composite slide rail assembly comprises:

[0005] A linear guide rail is provided with a semicircular slide rail groove along its length direction, and a guide slot is provided along the slide rail groove;

[0006] A positioning pin is provided, which comprises two groups of positioning pins arranged oppositely, and the workpiece to be positioned is clamped between the two groups of positioning pins;

[0007] The positioning pin comprises a guide sliding mechanism and a pin mechanism, the guide sliding mechanism is located in the slide rail groove and moves forward or backward in the direction of the guide slot, the pin mechanism is rotationally connected to the guide sliding mechanism, and the pin mechanism is coaxially locked with the guide sliding mechanism through a locking mechanism.

[0008] Preferably, the guide sliding mechanism comprises a guide sliding sleeve, a positioning collar is fixedly sleeved at both ends of the outer ring of the guide sliding sleeve, and the outer circumference of the positioning collar is matched with the arc of the slide rail groove.

[0009] Preferably, the guide slot comprises two grooves opened along the groove bottom of the slide rail groove.

[0010] The positioning screw hole is formed on both sides of the guide sliding sleeve along its axis, and a positioning screw rod is threadedly connected in the positioning screw hole, and rotating the positioning screw rod advances along the positioning screw hole and makes the front end of the positioning screw rod clamped into the guide clamping groove.

[0011] Preferably, the guide sliding sleeve is provided with a rotor cage at one end;

[0012] The needle mechanism comprises a rotor and a top rod and a rotating shaft provided on the axis of the rotor at both ends, and the needle head is fixedly arranged at the front end of the top rod;

[0013] The rotor is rotationally connected in the rotor cage, and the rotating shaft is rotationally supported in the rotating shaft hole provided in the center of the guide sliding sleeve.

[0014] Preferably, the locking mechanism comprises a positioning gear base fixedly arranged at the outer end of the rotating shaft hole of the guide sliding sleeve other than the rotor cage, a positioning clamping block arranged at the outer end of the rotating shaft, and a locking shaft sleeve, and the positioning clamping block and the positioning gear base are fixedly connected by moving along the rotating shaft.

[0015] Preferably, the rotating shaft is provided with a mounting groove on the outer periphery, and the positioning clamping block is connected in the mounting groove through a supporting spring.

[0016] Preferably, the locking shaft sleeve is provided with an inner tooth groove on the inner periphery of the corresponding end of the positioning gear base, and the locking shaft sleeve is provided with a plurality of positioning clamping grooves on the inner periphery of the corresponding end of the positioning clamping block, and the positioning clamping block can be clamped in the positioning clamping groove.

[0017] Preferably, the number of the positioning clamping grooves is at least 2, and the included angle between the adjacent two positioning clamping grooves is α.

[0018] The number of teeth of the positioning gear base is n, and the number of the inner tooth grooves is n, and the included angle between the adjacent two inner tooth grooves is β=360 / n, wherein n is 8-12.

[0019] The relative angle between the locking shaft sleeve or the rotating shaft and the positioning gear base can maintain the adjustment accuracy of the needle mechanism to be |α-β|.

[0020] Preferably, the rotating shaft is fixedly connected with an adjusting handle at the outer end.

[0021] Preferably, the lubricating grooves are formed on the side walls of the sliding rail groove along the linear guide rail, the depth L of the lubricating grooves is 1 / 2 of the depth H of the guide clamping groove, and the bottom arc of the lubricating grooves is consistent with the top arc of the guide clamping groove.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. The sliding rail assembly of the present application can not only realize one-way movement along the X, Y and Z axes, but also rotate to adjust the circumferential position of the workpiece to be positioned, thereby achieving convenient adjustment of two degrees of freedom of linear movement and / or rotation of the workpiece to be positioned, and improving the practicability;

[0024] 2. The locking mechanism is fixed by the locking sleeve and the positioning gear base through gear engagement, and the connection is convenient, labor-saving, firm and reliable;

[0025] 3. The positioning thimble can adjust the angle of the thimble mechanism by cooperating with the rotating shaft or the locking sleeve, thereby reducing the machining difficulty of the single machining positioning clamping groove or the internal tooth groove in the locking sleeve, and improving the rotation angle adjustment accuracy of the thimble mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0027] Figure 2 It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 1

[0028] It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 3 Figure 1 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0029] Figure 4 Figure 1 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0030] Figure 5 It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 1

[0031] It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 6 Figure 2 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0032] Figure 7 Figure 2 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0033] Figure 8 It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 2

[0034] It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 9 Figure 1 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0035] Figure 10 Figure 5 It is a structural schematic diagram of the sliding rail assembly of the present application;

[0036] Figure 11 It is a structural schematic diagram of the sliding rail assembly of the present application; Figure 6 ​​​​​​Middle locking shaft sleeve D-D toward structural section view;

[0037] Figure 12 For Figure 7 Middle locking shaft sleeve E-E toward structural section view.

[0038] Reference signs:

[0039] 100, slide rail assembly;

[0040] 1, linear guide rail; 11, slide rail groove; 12, guide slot; 13, lubricating groove;

[0041] 2, positioning thimble;

[0042] 3, guide sliding mechanism; 31, guide sliding sleeve; 32, positioning collar; 33, positioning screw hole; 34, positioning screw; 35, rotor cage; 351, connecting edge plate; 352, support end plate; 353, top rod hole; 36, rotating shaft hole; 37, positioning gear base;

[0043] 4, thimble mechanism; 41, rotor; 42, top rod; 43, rotating shaft; 431, mounting groove; 44, needle; 45, adjusting handle; 46, positioning block; 47, supporting spring;

[0044] 5, locking shaft sleeve; 51, positioning slot; 52, inner tooth groove. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the attached drawings to make the specific description. Figures 1-12 The technical scheme of the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0046] As Figure 1 and Figure 9As shown, the double-degree-of-freedom positioning composite slide rail assembly of the present application comprises a linear guide rail 1 and a positioning pin 2 moving along the linear guide rail 1. The linear guide rail 1 is provided with a semicircular slide rail groove 11 along the length direction thereof, and is provided with a guide clamping groove 12 along the bottom of the slide rail groove 11. The number of the guide clamping groove 12 can be one, two or more. The guide clamping groove 12 plays a role of limiting the positioning pin 2. The slide rail groove 11 is provided with a lubricating groove 13 along the two side walls of the linear guide rail 1. The depth L of the lubricating groove 13 is 1 / 2 of the depth H of the guide clamping groove 12. The bottom arc of the lubricating groove 13 is consistent with the top arc of the guide clamping groove 12. The lubricating groove 13 stores lubricating oil, and the lubricating oil can flow into the guide clamping groove 12 through the lubricating groove 13, thereby reducing the friction resistance of the positioning pin 2 moving along the slide rail groove 11 and the guide clamping groove 12. In addition, the lubricating oil can lubricate a larger contact area between the linear guide rail 1 and the positioning pin 2.

[0047] As shown, Figures 1-3 The positioning pin 2 comprises two groups of positioning pins 2 arranged oppositely along the slide rail groove 11 of the linear guide rail. The workpiece to be positioned is clamped between the two groups of positioning pins 2. The positioning pin 2 comprises a guide sliding mechanism 3 and a pin mechanism 4. The guide sliding mechanism 3 is located in the slide rail groove 11 and moves forward or backward in the direction of the guide clamping groove 12. The pin mechanism 4 is rotationally connected to the guide sliding mechanism 3, and the pin mechanism 4 is coaxially locked with the guide sliding mechanism 3 through a locking mechanism. Specifically, the guide sliding mechanism 3 comprises a guide sliding sleeve 31. The guide sliding sleeve 31 is fixedly provided with a positioning clamping ring 32 at both ends of the outer circle thereof. The outer periphery of the positioning clamping ring 32 is adapted to the curvature of the slide rail groove 11. The guide sliding mechanism 3 can stably move forward or backward along the slide rail groove through the positioning clamping ring.

[0048] In a preferred embodiment, as shown, Figures 1-2 The guide clamping groove 12 comprises two guide clamping grooves provided along the bottom of the slide rail groove 11. The guide sliding sleeve 31 is provided with a positioning screw hole 33 along the two sides of the axis thereof. A positioning screw rod 34 is threadedly connected in the positioning screw hole 33. Rotating the positioning screw rod 34 makes the front end of the positioning screw rod 34 enter the guide clamping groove 12 along the positioning screw hole 33. The guide sliding sleeve 31 can stably move forward or backward along the linear guide rail 1, and the guide sliding sleeve 31 does not rotate in the circumferential direction.

[0049] As shown, Figures 2-5As shown, the guide sleeve 31 is provided with a rotor cage 35 at one end, the rotor cage 35 includes a plurality of connecting edge plates 351 arranged along the circumference of the guide sleeve at one end, and a support end plate 352 fixedly connected at the end of the connecting edge plate, and the support end plate is provided with a top rod hole 353 in the center. The thimble mechanism 4 includes a rotor 41, a top rod 42 and a rotating shaft 43 arranged on both ends of the rotor 41, the outer end of the rotating shaft 43 is fixedly connected with an adjusting handle 45, and the front end of the top rod 42 is fixedly provided with a needle 44; the rotor 41 is rotatably connected in the rotor cage 35, the top rod 42 passes through the top rod hole 353, and the rotating shaft 43 is rotatably supported in the rotating shaft hole 36 arranged in the center of the guide sleeve 31, and the thimble mechanism 4 is stably rotated along the rotor cage 35 through the rotor 41, so as to meet the circumferential rotation angle adjustment of the clamped workpiece between the two thimble mechanisms 4.

[0050] As shown in Figure 2 , Figure 4 and Figure 8 , the locking mechanism includes a positioning gear seat 37 fixedly arranged at the outer end of the rotating shaft hole 36 of the guide sleeve 31 other than the rotor cage 35, a positioning clamping block 46 arranged at the outer end of the rotating shaft 43, and a locking shaft sleeve 5, which is movably fixedly connected with the positioning clamping block 46 and the positioning gear seat 37 along the rotating shaft 43.

[0051] As shown in Figure 5 and Figure 8 , the rotating shaft 43 is provided with a mounting groove 431 on the outer circumference, and the positioning clamping block 46 is connected in the mounting groove 431 through a supporting spring 47. The pressure applied to the positioning clamping block can make the positioning clamping block compress the supporting spring and retract into the mounting groove, and the positioning clamping block can protrude outward under the action of the supporting spring when the pressure on the positioning clamping block is released. The locking shaft sleeve 5 is provided with an inner tooth groove 52 on the inner side of the corresponding end, and the locking shaft sleeve 5 is provided with a plurality of positioning clamping grooves 51 on the inner side of the corresponding end. When the rotating shaft 43 and the guide sleeve 31 need to be coaxially connected, the positioning clamping block 46 can be clamped in the positioning clamping groove 51, and the locking shaft sleeve 5 is moved along the rotating shaft 43 to the side of the positioning gear seat 37 and the inner tooth groove of the locking shaft sleeve is engaged with the positioning gear seat, so that the coaxial locking of the rotating shaft and the guide sleeve can be realized, and the rotation positioning of the thimble mechanism along the guide mechanism in the direction of the rotating shaft can be realized.

[0052] As shown in Figures 6-7 and Figures 11-12As shown, the number of positioning clamping grooves 51 is at least two, and the included angle between the two adjacent positioning clamping grooves 51 is α, which ensures that the rotating shaft 43 rotates at least one positioning clamping groove 51 position relative to the locking sleeve 5. The number of teeth of the positioning gear seat 37 is n, and the number of inner tooth grooves 52 is n, and the included angle between the two adjacent inner tooth grooves 52 is β=360 / n, wherein n is 8-12; the relative angle between the rotating locking sleeve 5 or the rotating shaft 43 and the positioning gear seat 37 can maintain the adjustment accuracy of the ejector pin mechanism 4 as |α-β|. In a specific embodiment, the number of positioning clamping grooves 51 is three, and the included angle between the two adjacent positioning clamping grooves 51 is 40°; the number of teeth of the positioning gear seat 37 is 12 teeth, and the number of inner tooth grooves 52 is 12, and the included angle between the two adjacent inner tooth grooves 52 is 30°. First, taking the positioning gear seat 37 as a reference point, the integrated rotating locking sleeve 5 and rotating shaft 43 can realize 30° adjustment of the rotating shaft each time, that is, the adjustment accuracy of the ejector pin mechanism 4 is 30°, at this time, if you want to improve the rotational adjustment accuracy of the ejector pin mechanism 4, you need to continue to increase the number of teeth n of the positioning gear seat 37, which will increase the processing cost of the positioning gear seat 37 and the locking sleeve 5, and with the increase of the number of teeth, it is easy to cause the sliding tooth, which will cause the positioning effect to be poor. Based on this, three positioning clamping grooves 51 are arranged in the inner ring of the other end of the locking sleeve 5, and the locking sleeve 5 and the positioning gear seat 37 are in a fixed connection state during the first adjustment, and the second rotational adjustment is performed, that is, the positioning clamping block 46 in the mounting groove 431 is pressed into the mounting groove, so that the rotating shaft 43 and the locking sleeve 5 are in a relative rotating state, at this time, the reverse rotational adjustment is 40° in the first rotational adjustment direction, that is, the adjustment accuracy of the ejector pin mechanism 4 relative to the guide and sliding mechanism 3 is 10° in the rotating shaft direction; if 20° rotational adjustment accuracy is required, the rotating locking sleeve 5 or the rotating shaft 43 is rotated at two tooth positions or positioning clamping groove positions at a time, which not only realizes the adjustment of the rotating shaft 43 at 10°, 20°, 30°, etc. with 10° as the accuracy β angle, but also avoids the large density of the positioning clamping grooves in the locking sleeve 5, which causes the included angle between the adjacent positioning clamping grooves to be too small and loses the adjustment angle stacking effect. It should be noted that, for example, the number of teeth of the positioning gear seat 37 is 8, and β is 45°; the number of positioning clamping grooves 51 is 3, and α is 60°, which realizes the rotational adjustment accuracy of the ejector pin mechanism 4 of 15°.It should be noted that the number of positioning slots 51 can be set according to requirements, for example, when the number of teeth n of the positioning gear seat 37 is 12, β is 30°, α is 40°, and the rotation adjustment accuracy of the ejector pin mechanism 4 is |α-β|=10°, in order to achieve full-angle adjustment of the rotation angle of the ejector pin mechanism 4 by 10°, 20° or 30°, the number of positioning slots 51 should be at least 3; when the workpiece is adjusted by 30° in the circumferential direction, the adjustment can be achieved by only rotating the locking sleeve 5 and the positioning gear seat 37; when the workpiece is adjusted by 10° in the circumferential direction, the position of one inner tooth groove 52 of the rotating shaft 43 and the locking sleeve 5 is adjusted in the positive direction, then the position of one positioning slot 51 of the rotating shaft 43 relative to the locking sleeve 5 is adjusted in the reverse direction; when the workpiece needs to be adjusted by 20° in the circumferential direction, the positions of two inner tooth grooves 52 of the rotating shaft 43 and the locking sleeve 5 are adjusted in the positive direction, then the positions of two positioning slots 51 of the rotating shaft 43 relative to the locking sleeve 5 are adjusted in the reverse direction. When the number of teeth n of the positioning gear seat 37 is 8, β is 45°, α is 60°, and the rotation adjustment accuracy of the ejector pin mechanism 4 is |α-β|=15°, in order to achieve full-angle adjustment of the rotation angle of the ejector pin mechanism 4 by 15°, 30° or 45°, the number of positioning slots 51 should also be at least 3, that is, the positioning slots 51 and the inner tooth grooves 52 at both ends of the locking sleeve 5 are designed according to the required rotation angle of the ejector pin mechanism 4. The rotation of the rotating shaft and the locking sleeve in cooperation achieves accurate adjustment of the ejector pin mechanism, reduces the processing difficulty, and improves the rotation adjustment accuracy of the ejector pin mechanism. It should be noted that, in order to facilitate the rotation adjustment of the ejector pin mechanism 4, the number of teeth n of the positioning gear seat 37 and the included angle α between the two adjacent positioning slots 51 are designed to facilitate the rotation adjustment accuracy of the ejector pin mechanism 4 by 5°, 10°, 15°, etc.

[0053] The above is the preferred embodiment of the present application. It should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A dual-degree-of-freedom positioning composite slide rail assembly, characterized in that, The slide rail assembly (100) includes: A linear guide (1) has a semi-circular slide rail groove (11) along its length direction, and a guide slot (12) is provided along the slide rail groove (11); the guide slot (12) includes two slots provided along the bottom of the slide rail groove (11). Positioning pins (2), the positioning pins (2) include two sets arranged opposite to each other, the workpiece to be positioned is clamped between the two sets of positioning pins (2); The positioning pin (2) includes a guide sliding mechanism (3) and a pin mechanism (4). The guide sliding mechanism (3) moves forward or backward along the guide slot (12) in the slide rail groove (11). The pin mechanism (4) is rotatably connected to the guide sliding mechanism (3), and the pin mechanism (4) is coaxially locked with the guide sliding mechanism (3) through a locking mechanism. The guide mechanism (3) includes a guide sleeve (31), and positioning rings (32) are fixedly fitted at both ends of the outer ring of the guide sleeve (31). The outer circumference of the positioning rings (32) is adapted to the curvature of the slide rail groove (11). The guide sleeve (31) has positioning screw holes (33) on both sides along its axis. The positioning screw holes (33) are internally threaded with positioning screws (34). Rotating the positioning screws (34) causes them to advance along the positioning screw holes (33) and their front ends to be engaged in the guide groove (12). The guide sleeve (31) is provided with a rotor cage (35) at one end; the ejector mechanism (4) includes a rotor (41) and ejector rods (42) and rotating shafts (43) provided on the axes at both ends of the rotor (41). A needle head (44) is fixedly provided at the center of the front end of the ejector rod (42); the rotor (41) is rotatably connected inside the rotor cage (35), and the rotating shaft (43) is rotatably supported in the rotating shaft hole (36) provided at the center of the guide sleeve (31); The locking mechanism includes a positioning gear seat (37) fixedly disposed at the outer end of the shaft hole (36) of the guide sleeve (31) which is different from the rotor cage sleeve (35), a positioning block (46) disposed at the outer end of the shaft (43), and a locking bushing (5). The positioning block (46) and the positioning gear seat (37) can be fixedly connected by moving along the shaft (43).

2. The dual-degree-of-freedom positioning composite slide rail assembly according to claim 1, characterized in that, The rotating shaft (43) has an installation groove (431) on its outer periphery, and the positioning block (46) is connected in the installation groove (431) by a support spring (47).

3. The dual-degree-of-freedom positioning composite slide rail assembly according to claim 2, characterized in that, The locking bushing (5) and the positioning gear seat (37) have an inner tooth groove (52) on the inner circumference of one end, and the locking bushing (5) and the positioning block (46) have a plurality of positioning slots (51) on the inner circumference of one end, and the positioning block (46) can be fitted into the positioning slots (51).

4. The dual-degree-of-freedom positioning composite slide rail assembly according to claim 3, characterized in that, The number of positioning slots (51) is at least 2, and the included angle between two adjacent positioning slots (51) is α; The number of teeth of the positioning gear seat (37) is n, the number of internal tooth grooves (52) is n, and the included angle between two adjacent internal tooth grooves (52) is β=360 / n, where n is 8~12; By rotating the locking bushing (5) or the rotating shaft (43) relative angle to the positioning gear seat (37), the adjustment accuracy of the ejector mechanism (4) can be maintained at |α-β|.

5. The dual-degree-of-freedom positioning composite slide rail assembly according to claim 4, characterized in that, An adjusting handle (45) is fixedly connected to the outer end of the rotating shaft (43).

6. The dual-degree-of-freedom positioning composite slide rail assembly according to claim 1, characterized in that, The slide rail groove (11) has a lubrication groove (13) on both sides of the linear guide rail (1). The depth L of the lubrication groove (13) is 1 / 2 of the depth H of the guide groove (12), and the bottom arc of the lubrication groove (13) is consistent with the top arc of the guide groove (12).

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