A powerful clamping and positioning device

Abstract

The present invention discloses a powerful clamping and positioning device, which includes a mounting base. A profiling groove for placing a guide rail and a magnetic conductive block is provided on the mounting base. The device further includes two clamping cylinders installed in the mounting base. Two first mounting grooves are provided on one side of the mounting base along its width direction, and two second mounting grooves are further provided at one end of the mounting base along its length direction, and each first mounting groove communicates with a second mounting groove. Each clamping cylinder includes a pushing cylinder assembly installed in the first mounting groove and a clamping assembly installed in the second mounting groove and in contact with the pushing cylinder assembly. The present invention is provided with two clamping cylinders, which can automatically clamp and position the guide rail and the magnetic conductive block respectively to ensure the parallelism between the guide rail and the magnetic table. It has a high degree of automation, high working efficiency, is easy to use, saves a large amount of human resources, and thus reduces costs.

Description

Technical Field

[0001] The present invention relates to the technical field of linear guides, and in particular to a strong clamping and positioning device. Background Art

[0002] Nowadays, the domestic demand for linear guides (linear motion guides) is large. When grinding a guide rail, the guide rail needs to be fixed on a magnetic table and its parallelism with the machine table needs to be ensured. Currently, the operation of fixing the guide rail on the magnetic table and maintaining parallelism basically adopts the method of manual positioning. In this process, it is extremely dependent on the proficiency of the personnel, and manual straightening is slow and the work efficiency is low. Summary of the Invention

[0003] The purpose of the present invention is to provide a strong clamping and positioning device. The device is provided with two clamping cylinders, which can automatically clamp and position the guide rail and the magnetic conductive block respectively to ensure the parallelism between the guide rail and the magnetic table. It has a high degree of automation, high work efficiency, is easy to use, saves a large amount of human resources, and thus reduces costs. At the same time, the pushing part of the piston rod is designed in the structure of a wedge block, that is, an inclined surface is designed on one side of the pushing part, so as to amplify the driving force of the cylinder and make it have a strong holding force, thereby ensuring that the position of the guide rail will not change during magnetic absorption processing, and further ensuring the processing and grinding accuracy.

[0004] To achieve the above object, the following technical solutions are adopted:

[0005] A strong clamping and positioning device includes a mounting base, and a profiling groove for placing a guide rail and a magnetic conductive block is opened on the mounting base. The device also includes two clamping cylinders installed in the mounting base; two first mounting grooves are opened on one side of the mounting base along its width direction, and two second mounting grooves are also opened at one end of the mounting base along its length direction, and each first mounting groove communicates with a second mounting groove; each clamping cylinder includes a pushing cylinder assembly installed in the first mounting groove and a clamping assembly installed in the second mounting groove and in contact with the pushing cylinder assembly; a first air hole and a second air hole communicating with the two first mounting grooves are also opened on the mounting base; the first air hole is used to connect to an external air source to drive the two first pushing cylinder assemblies to translate, and then push the two clamping assemblies so that one end of each clamping assembly extends out of the second mounting groove to the profiling groove to clamp the guide rail and the magnetic conductive block respectively; the second air hole is used to connect to an external air source to drive the two first pushing cylinder assemblies to reset, and then drive one end of the two clamping assemblies to retract into the second mounting groove.

[0006] Further, the two first mounting grooves are respectively formed in the upper and lower parts of one side of the mounting base; each of the pushing cylinder assemblies includes a piston installed in the first mounting groove, a piston rod connected to the piston, a guide sleeve fixedly installed in the first mounting groove, and a sealing rear cover arranged at one end of the first mounting groove; one end of the guide sleeve is provided with a first guiding hole penetrating through to the other end, and a first pushing member is movably installed on one side of the guide sleeve, and the first pushing member contacts the clamping assembly; the piston rod includes a connecting part and a pushing part integrally connected, the connecting part is connected to the piston, and the pushing part is inserted into the first guiding hole; an inclined surface is provided on one side of the pushing part close to the first pushing member, and the inclined surface contacts the first pushing member; when the piston rod is driven by external air pressure to perform a translational movement, the clamping assembly is pushed to move through the inclined surface and the first pushing member.

[0007] Further, the two second mounting grooves are respectively formed in the upper and lower parts of one end of the mounting base and both penetrate through to the profiling groove; each of the clamping assemblies includes a clamping push rod arranged in the second mounting groove; one end of the clamping push rod is provided with a receiving block contacting the first pushing member, and the other end of the clamping push rod extends out of the second mounting groove to the profiling groove; a pressing block is further provided at one end of the clamping push rod extending from the second mounting groove into the profiling groove.

[0008] Further, the clamping assembly further includes a fixed limiting sleeve fixedly installed in the second mounting groove, and the clamping push rod is movably arranged through the fixed limiting sleeve; a first buffer spring is further sleeved on the outer wall of the clamping push rod, and both ends of the first buffer spring respectively abut against the fixed limiting sleeve and the receiving block.

[0009] Further, an adjusting bolt is further installed at one end of the second mounting groove far from the profiling groove; a first adjusting member is movably installed on the other side of the guide sleeve, and the first adjusting member contacts the adjusting bolt.

[0010] Further, two mounting through holes communicating with the first guiding hole are respectively formed on both sides of the guide sleeve; the first pushing member and the first adjusting member are respectively movably installed in one mounting through hole.

[0011] Further, both the first pushing member and the first adjusting member are cylindrical pins.

[0012] Further, a second buffer spring is further connected between the end of the pushing part and the inner wall of the other end of the first mounting groove.

[0013] Further, a plurality of third buffer springs are further installed on the guide sleeve, and the third buffer springs are arranged from one end of the guide sleeve to the other end.

[0014] Further, the first air hole and the second air hole are respectively formed on both sides of one end of the mounting base.

[0015] With the above solution, the beneficial effects of the present invention are as follows:

[0016] The device is provided with two clamping cylinders, which can automatically clamp and position the guide rail and the magnetic conductive block respectively to ensure the parallelism between the guide rail and the magnetic table. It has a high degree of automation, high working efficiency, is easy to use, saves a large amount of human resources, and thus reduces costs. At the same time, the pushing part of the piston rod is designed in the structure of a wedge block, that is, an inclined surface is designed on one side of the pushing part, so as to amplify the driving force of the cylinder and make it have a strong holding force, thereby ensuring that the position of the guide rail will not change during magnetic absorption processing, and further ensuring the processing and grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present invention;

[0018] Figure 2 is Figure 1 a perspective view from another angle;

[0019] Figure 3 is Figure 1 a perspective view omitting the mounting base;

[0020] Figure 4 is an exploded view of the clamping cylinder of the present invention;

[0021] Figure 5 is the first sectional view of the present invention;

[0022] Figure 6 is the second sectional view of the present invention;

[0023] Among them, the reference numerals in the drawings are explained as follows:

[0024] 1 - mounting base; 2 - push cylinder assembly;

[0025] 3 - clamping assembly; 11 - profiling groove;

[0026] 12 - first air hole; 13 - second air hole;

[0027] 21 - piston; 22 - piston rod;

[0028] 23 - guide sleeve; 24 - sealing rear cover;

[0029] 25 - first pusher; 26 - second buffer spring;

[0030] 27 - third buffer spring; 31 - clamping push rod;

[0031] 32 - receiving block; 33 - pressing block;

[0032] 34 - fixed limit sleeve; 35 - first buffer spring;

[0033] 36 - Adjusting bolt; 37 - First adjusting member;

[0034] 221 - Connecting portion; 222 - Pushing portion;

[0035] 223 - Inclined surface. Detailed implementation manners

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Referring to Figures 1 to 6 As shown, the present invention provides a powerful clamping and positioning device, including a mounting base 1, and a profiling groove 11 for placing a guide rail and a magnetic conductive block is formed on the mounting base 1. The device further includes two clamping cylinders installed in the mounting base 1. Two first mounting grooves are formed on one side of the mounting base 1 along its width direction, and two second mounting grooves are further formed at one end of the mounting base 1 along its length direction, and each first mounting groove communicates with a second mounting groove. Each clamping cylinder includes a pressing cylinder assembly 2 installed in the first mounting groove and a clamping assembly 3 installed in the second mounting groove and in contact with the pressing cylinder assembly 2. The mounting base 1 is further provided with a first air hole 12 and a second air hole 13 communicating with the two first mounting grooves. The first air hole 12 is used to access an external air source to drive the two first pressing cylinder assemblies 2 to translate, thereby pushing the two clamping assemblies 3 and making one end of them extend out of the second mounting groove into the profiling groove 11 to clamp the guide rail and the magnetic conductive block respectively. The second air hole 13 is used to access an external air source to drive the two first pressing cylinder assemblies 2 to reset, thereby driving one end of the two clamping assemblies 3 to retract into the second mounting groove.

[0038] Wherein, the two first mounting grooves are respectively formed in the upper and lower parts of one side of the mounting base 1; each pushing cylinder assembly 2 includes a piston 21 mounted in the first mounting groove, a piston rod 22 connected to the piston 21, a guide sleeve 23 fixedly mounted in the first mounting groove, and a sealing rear cover 24 arranged at one end of the first mounting groove; one end of the guide sleeve 23 is provided with a first guiding hole penetrating through to the other end, and a first pushing member 25 is also movably mounted on one side of the guide sleeve 23, and the first pushing member 25 contacts the clamping assembly 3; the piston rod 22 includes a connecting portion 221 and a pushing portion 222 which are integrally connected, the connecting portion 221 is connected to the piston 21, and the pushing portion 222 is inserted into the first guiding hole; an inclined surface 223 is provided on one side of the pushing portion 222 close to the first pushing member 25, and the inclined surface 223 contacts the first pushing member 25; the piston rod 22 is used for driving the clamping assembly 3 to move through the inclined surface 223 and the first pushing member 25 when making a translational movement under the drive of external air pressure; the two second mounting grooves are respectively formed in the upper and lower parts of one end of the mounting base 1 and both penetrate through to the profiling groove 11; each clamping assembly 3 includes a clamping push rod 31 arranged in the second mounting groove; one end of the clamping push rod 31 is provided with a receiving block 32 contacting the first pushing member 25, and the other end of the clamping push rod 31 extends out of the second mounting groove to the profiling groove 11; a pressing block 33 is further provided at one end of the clamping push rod 31 extending from the second mounting groove into the profiling groove 11; the clamping assembly 3 further includes a fixed limiting sleeve 34 fixedly mounted in the second mounting groove, and the clamping push rod 31 is movably arranged through the fixed limiting sleeve 34; a first buffer spring 35 is further sleeved on the outer wall of the clamping push rod 31, and both ends of the first buffer spring 35 abut against the fixed limiting sleeve 34 and the receiving block 32 respectively.

[0039] An adjusting bolt 36 is further mounted at one end of the second mounting groove far from the profiling groove 11; a first adjusting member 37 is also movably mounted on the other side of the guide sleeve 23, and the first adjusting member 37 contacts the adjusting bolt 36; two mounting through holes communicating with the first guiding hole are respectively formed on both sides of the guide sleeve 23; the first pushing member 25 and the first adjusting member 37 are respectively movably mounted in a mounting through hole; the first pushing member 25 and the first adjusting member 37 are both cylindrical pins; a second buffer spring 26 is further connected between the end of the pushing portion 222 and the inner wall of the other end of the first mounting groove; a plurality of third buffer springs 27 are further mounted on the guide sleeve 23, and the third buffer springs 27 are arranged from one end of the guide sleeve 23 to the other end; the first air hole 12 and the second air hole 13 are respectively formed on both sides of one end of the mounting base 1.

[0040] The working principle of the present invention:

[0041] Continue to refer to Figures 1 to 6As shown, in this embodiment, the profiling groove 11 is formed in the bottom of the mounting base 1. The profiling groove 11 is in a convex shape. A magnetic conductive block is placed in its lower part, and a guide rail to be ground is placed in its upper part (the guide rail is placed on the magnetic conductive block, and the magnetic conductive block is placed on the magnetic table. The magnetic table generates a magnetic force on the magnetic conductive block to adsorb the guide rail on the surface of the magnetic conductive block). The clamping components 3 of the two clamping cylinders can respectively clamp and fix the magnetic conductive block and the guide rail to ensure the parallelism of the guide rail, the magnetic conductive block and the magnetic table, thus facilitating machining and grinding. In this embodiment, two first mounting grooves are formed in the upper and lower parts on one side of the mounting base 1, and two second mounting grooves are formed in the upper and lower parts at one end of the mounting base 1, and the two second mounting grooves penetrate through to the profiling groove 11. The first air hole 12 and the second air hole 13 are respectively formed on both sides at one end of the mounting base 1. The first air hole 12 is communicated with one end of the two first mounting grooves, and the second air hole 13 is communicated with the other end of the two second mounting grooves.

[0042] During operation, by introducing air into the first air hole 12, the air pressure acts on the pistons 21 of the two push cylinder assemblies 2, and then drives the piston rods 22 to move forward ( Figure 4 in the A direction in the figure), while the piston rod 22 moves forward (it can be guided through the guide sleeve 23), and through the inclined surface 223 on one side of the pushing part 222 of the piston rod 22, pressure can be applied to the first pushing part 25 (both the first pushing part 25 and the first adjusting part 37 are cylindrical pins, which are convenient for machining and installation); the first pushing part 25 protrudes outwards from the mounting through-hole and applies pressure to the receiving block 32, and then pushes the clamping push rod 31 to extend into the profiling groove 11, and then clamps and fixes the guide rail and the magnetic conductive block through the pressing block 33 to keep them parallel to the magnetic table. In this embodiment, by designing the pushing part 222 of the piston rod 22 into a wedge-shaped block structure, that is, an inclined surface 223 is designed on one side of the pushing part 222, the driving force of the cylinder can be amplified, so that it has a strong holding force (after the acting force F generated by the air pressure acts on the piston 21, it is converted into the acting force N through the amplification effect of the inclined surface 223 of the pushing part 222, and the acting force N = F / tanθ, where θ is the inclination angle of the inclined surface 223), so as to ensure that the position of the guide rail will not change during magnetic absorption machining, and thus ensure the machining and grinding accuracy.

[0043] After the work is completed, the first air hole 12 is cut off from the air supply, and air is introduced into the second air hole 13. Under the action of the air pressure, the piston rod 22 can be pushed to retract, that is, towards Figure 4Move in the B direction in []. At this time, the inclined surface 223 of the pushing part 222 will slowly cancel the pressure on the first pushing member 25. Then, driven by the restoring force of the first buffer spring 35 (when the clamping push rod 31 extends outwards to clamp the product, the first buffer spring 35 is in a compressed state), the clamping push rod 31 and the first pushing member 25 are reset, so as to cancel the clamping force on the guide rail and the magnetic conduction block, facilitating the removal of the product. In this embodiment, a second buffer spring 26 is further connected between the end of the pushing part 222 and the inner wall of the other end of the first installation groove. A number of third buffer springs 27 are also installed on the guide sleeve 23, and the third buffer springs 27 are arranged from one end of the guide sleeve 23 to the other end (when the piston rod 22 extends outwards, the piston 21 can squeeze one end of the third buffer spring 27, and the other end of the third buffer spring 27 abuts against the inner wall of one end of the first installation groove). When the piston rod 22 extends outwards, both the second buffer spring 26 and the third buffer spring 27 are in a compressed state. When the first air hole 12 cuts off the air supply and the second air hole 13 is ventilated, under the drive of their restoring forces, the piston rod 22 can be quickly reset. In addition, an adjusting bolt 36 is installed at the end of the second installation groove away from the profiling groove 11. The adjusting bolt 36 contacts the first adjusting member 37, and the clamping force of the cylinder can be adjusted through the adjusting bolt 36. At the same time, sealing rings are sleeved on the outer wall of the piston 21, the outer wall of the sealing rear cover 24, the outer wall of the adjusting bolt 36, and the outer wall of the fixed limit sleeve 34 to improve the sealing performance of the cylinder.

[0044] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powerful clamping and positioning device, comprising a mounting base, and a profiling groove for placing a guide rail and a magnetic block is provided on the mounting base, characterized in that, It also includes two clamping cylinders installed in the mounting base; on one side of the mounting base, two first mounting grooves are opened along its width direction, and at one end of the mounting base, two second mounting grooves are also opened along its length direction, and each first mounting groove communicates with a second mounting groove; each of the clamping cylinders includes a pushing cylinder assembly installed in the first mounting groove and a clamping assembly installed in the second mounting groove and in contact with the pushing cylinder assembly; the mounting base is also provided with a first air hole and a second air hole communicating with the two first mounting grooves; the first air hole is used to connect to an external air source to drive the two first pushing cylinder assemblies to translate, thereby pushing the two clamping assemblies and making one end of them extend from the second mounting groove to the profiling groove to clamp the guide rail and the magnetic conductive block respectively; the second air hole is used to connect to an external air source to drive the two first pushing cylinder assemblies to reset, thereby driving one end of the two clamping assemblies to retract into the second mounting groove; The two first mounting grooves are respectively opened in the upper and lower parts of one side of the mounting base; each pushing cylinder assembly includes a piston installed in the first mounting groove, a piston rod connected to the piston, a guide sleeve fixedly installed in the first mounting groove, and a sealing rear cover arranged at one end of the first mounting groove; one end of the guide sleeve is provided with a first guiding hole penetrating through to the other end, and a first pushing member is also movably installed on one side of the guide sleeve, and the first pushing member is in contact with the clamping assembly; the piston rod includes an integrally connected connecting portion and a pushing portion, the connecting portion is connected to the piston, and the pushing portion is inserted into the first guiding hole; an inclined surface is provided on the side of the pushing portion close to the first pushing member, and the inclined surface is in contact with the first pushing member; the piston rod is used to push the clamping assembly to move through the inclined surface and the first pushing member when making a translational motion under the drive of an external air pressure.

2. The powerful clamping and positioning device according to claim 1, characterized in that, The two second mounting grooves are respectively opened in the upper and lower parts of one end of the mounting base and both penetrate to the profiling groove; each clamping assembly includes a clamping push rod arranged in the second mounting groove; one end of the clamping push rod is provided with a receiving block in contact with the first pushing member, and the other end of the clamping push rod extends from the second mounting groove to the profiling groove; a pressing block is also provided at the end of the clamping push rod extending from the second mounting groove into the profiling groove.

3. The powerful clamping and positioning device according to claim 2, wherein The clamping assembly also includes a fixed limiting sleeve fixedly installed in the second mounting groove, and the clamping push rod is movably arranged through the fixed limiting sleeve; a first buffer spring is also sleeved on the outer wall of the clamping push rod, and both ends of the first buffer spring are respectively abutted against the fixed limiting sleeve and the receiving block.

4. The powerful clamping and positioning device according to claim 3, characterized in that, An adjusting bolt is also installed at the end of the second mounting groove away from the profiling groove; a first adjusting member is also movably installed on the other side of the guide sleeve, and the first adjusting member is in contact with the adjusting bolt.

5. The powerful clamping and positioning device according to claim 4, characterized in that An installation through hole communicating with the first guiding hole is also opened on each of the two sides of the guide sleeve; the first pushing member and the first adjusting member are respectively movably installed in an installation through hole.

6. The powerful clamping and positioning device according to claim 5, wherein, Both the first pushing member and the first adjusting member are cylindrical pins.

7. The powerful clamping and positioning device according to claim 1, characterized in that, A second buffer spring is also connected between the end of the pushing portion and the inner wall of the other end of the first mounting groove.

8. The powerful clamping and positioning device according to claim 1, characterized in that A number of third buffer springs are also installed on the guide sleeve, and the third buffer springs are arranged to penetrate from one end of the guide sleeve to the other end.

9. The powerful clamping and positioning device according to claim 1, characterized in that The first air hole and the second air hole are respectively formed on both sides of one end of the mounting base.

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