A clamp and polishing mechanism thereof

Abstract

The present invention relates to a fixture for clamping a workpiece for polishing, the fixture comprising a string rod, a spacer sequentially sleeved on the string rod, a workpiece sleeved on the string rod in a first direction, a spacer sleeved on the string rod, a workpiece sleeved on the string rod in a second direction opposite to the first direction, a spacer sleeved on the string rod, and end locks sleeved on both ends of the string rod and respectively holding the spacer, the workpiece comprising a hollow ring body with a central hole, a partition plate protruding from the inner sides of the upper and lower ends of the ring body, the outer peripheral surface of the ring body is a polishing surface, and a cover plate mounting groove and a module mounting groove are respectively formed on the front and rear sides of the partition plate, the module mounting groove is engaged with the spacer, and the cover plate mounting groove is engaged with the spacer. The present application also includes a polishing mechanism.

Description

Technical Field

[0001] The invention relates to the field of metal processing, in particular to a clamp and a polishing mechanism thereof. Background Art

[0002] When polishing a product, it needs to be pre-installed on the polishing fixture, and then the polishing fixture is used to protect the surface of the product that does not need to be polished, and then the surface of the product that needs to be polished is polished to achieve the surface finish required by the customer. If manual polishing is used, the polishing yield will be unstable and inefficient, and the operator will also produce fatigue strength after working for a long time, which will lead to unstable factors and affect product quality. Figure 1 , Figure 2 A tiny precision small part is shown, which is called workpiece 10 here. The workpiece 10 includes a ring body 11 and a polishing surface 14 formed on the outside of the ring body 11. The polishing surface 14 needs to be polished to meet customer requirements. The size of 10 is very small, and a clamp is needed to fix the workpiece 10 before polishing. The single fixing method is too inefficient. The best solution is that the clamp can clamp multiple workpieces 10 at one time for polishing at the same time. Summary of the invention

[0003] Based on this, the present invention provides a clamp and a polishing mechanism thereof which can clamp multiple workpieces and protect non-polished surfaces.

[0004] In order to solve the above technical problems, the present application provides a fixture for clamping a workpiece for polishing, the fixture comprising a string rod, spacers sequentially mounted on the string rod, a workpiece mounted on the string rod in a first direction, a spacer mounted on the string rod, a workpiece mounted on the string rod in a second direction opposite to the first direction, a spacer mounted on the string rod, and end locks mounted on both ends of the string rod and respectively supporting the spacer, the workpiece comprising a hollow ring body with a central hole, a partition plate protruding from the inner sides of the upper and lower ends of the ring body, the outer peripheral surface of the ring body is a polishing surface, and a cover plate mounting groove and a module mounting groove are respectively formed on the front and rear sides of the partition plate, the module mounting groove is engaged with the spacer, and the cover plate mounting groove is engaged with the spacer.

[0005] Preferably, the spacer includes a spacer ring body, a spacer hole formed in the middle of the spacer ring body extending from front to back, a spacer convex portion protruding from the spacer ring body at the periphery of the spacer hole in the front-to-back direction, and a side edge step formed by being recessed from the outer periphery of the spacer convex portion, the module mounting groove of the workpiece accommodates the spacer convex portion, and the ring body at the periphery of the module mounting groove is accommodated on the side edge step.

[0006] Preferably, the workpiece also includes a protruding stopper protruding from the upper and lower ends of a ring body located on one side of the module mounting groove, the string rod passes through the center hole of the workpiece, and the partition also includes recessed platforms formed on the upper and lower sides of the spacer ring body and a side surrounding portion extending upward from the outer circumference of the recessed platform, and the protruding stopper is accommodated in the recessed platform and protected by the side surrounding portion.

[0007] Preferably, the two partitions sleeved on both ends of the string rod are provided with the module installation groove only on the front or rear side, and the other partitions are provided with the module installation groove and the concave platform structure on both the front and rear sides.

[0008] Preferably, the spacer includes a spacer ring body, a spacer hole passing through the middle of the spacer ring body from front to back, a spacer protrusion protruding from the front and rear sides of the spacer ring body and located at the outer edge of the spacer hole, and a side edge recess formed on the outer peripheral edge of the spacer protrusion; the cover plate mounting groove of the workpiece accommodates the spacer protrusion, and the ring body on one side of the cover plate mounting groove is accommodated in the side edge recess.

[0009] Preferably, a plurality of groups of the workpieces are passed through the string rod, and the sleeve directions of two adjacent workpieces are opposite, and the front and rear sides of each workpiece correspond to a spacer or a spacer respectively.

[0010] Preferably, a locking block is fixed to one end of the string rod, and a handle connecting rod is fixed to the other end.

[0011] In order to solve the above-mentioned technical problems, the present application also provides a polishing mechanism, including the aforementioned clamp and a bracket for fixing the clamp, the bracket including a connecting plate, a manipulator fixing part and a bearing mounting plate fixed at the front and rear ends of the connecting plate, a tail top and a locking block fixed to the outside of the bearing mounting plate, one end of the clamp is locked on the locking block, and the handle connecting rod at the other end of the clamp passes through the bearing mounting plate, and the locking block can rotate the clamp under the drive of the manipulator.

[0012] Preferably, the connecting plate includes a connecting plate body extending in the front-to-back direction, and a reinforcing plate fixed to the lower left and right sides of the connecting plate body, and the manipulator fixing part includes a connecting part fixed to the laterally outer side of the rear end of the connecting plate body, a main frame extending from the connecting part, and an installation hole surrounded by the main frame, wherein a manipulator connected to the locking block is installed in the installation hole.

[0013] Preferably, the bearing mounting plate is provided with a bearing for the handle connecting rod to pass through and rotate, the tail top includes a horizontal portion whose rear end is fixed to the bearing mounting plate, a top plate formed by extending downward from the front end of the horizontal portion, a copper sleeve that passes through the top plate front and back and is fixed in the top plate, a push rod passing through the copper sleeve, a spring that is supported between the rear end of the push rod and the inner side of the top plate, and a pin that locks the front end of the push rod to the front end of the top plate, the push rod includes a push rod body and a push top end formed at the rear end of the push rod body and supported on the handle connecting rod.

[0014] The clamp and polishing mechanism of the present application respectively bite and protect the two sides of the asymmetrically structured workpiece by setting the spacers and spacers, so that only the polishing surface is exposed to the outside for polishing, and multiple workpieces can be polished at one time, which greatly improves the efficiency and ensures the polishing quality. At the same time, the polishing mechanism sets the tail top so that the push rod always maintains the bite density between the workpiece and the spacers and spacers under the elastic force of the spring, ensuring that the product will not be polished except for the polishing surface during the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional image of the workpiece for this application;

[0016] Figure 2 A three-dimensional image of the workpiece of this application from another angle;

[0017] Figure 3 A three-dimensional composite diagram of the polishing mechanism of this application;

[0018] Figure 4 A cross-sectional view of the polishing mechanism of this application;

[0019] Figure 5 A three-dimensional assembly diagram of the clamp of this application;

[0020] Figure 6 This is a three-dimensional exploded view of some components of the clamp of this application;

[0021] Figure 7 A three-dimensional diagram of a spacer of the clamp of the present application;

[0022] Figure 8 A three-dimensional view of the spacer of the clamp of the present application.

[0023] The meanings of the symbols in the accompanying drawings are:

[0024] Workpiece-10; ring body-11; middle hole-12; partition plate-13; polishing surface-14; protruding stopper-15; cover plate mounting groove-16; module mounting groove-17; bracket-20; connecting plate-21; connecting plate body-211; reinforcing plate-212; bearing mounting plate-22; fixing part-221; bearing mounting part-222; bearing-223; manipulator fixing part-23; connecting part-231; main frame-232; mounting hole-233; tail top-24; horizontal part-241; top plate-242; Pin 243; copper sleeve 244; push rod 245; push rod body 2451; push end 2452; spring 246; locking block 25; clamp 30; string rod 31; spacer 32; spacer ring body 321; spacer hole 322; spacer protrusion 324; side edge recess 325; spacer 33; spacer ring body 331; spacer hole 332; recess 334; side surrounding part 335; spacer protrusion 336; side edge step 337; end lock 34; handle connecting rod 35. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] See also Figure 1 , Figure 3 As shown, in this application, the X direction is the front of the front-to-back direction, the Y direction is the right of the left-to-right direction, and the Z direction is the top of the up-down direction.

[0029] See also Figure 1 , Figure 2As shown, the workpiece 10 to be polished in the present application is a small precision metal part, which is suitable for installing antenna modules on electronic devices, such as the millimeter wave antenna module on the mobile phone of Company A. Drilling a hole in the metal frame and inserting the workpiece 10 can provide an installation position without metal shielding obstruction to avoid affecting the antenna signal.

[0030] Specifically, the workpiece 10 includes a ring body 11 with a central hole 12, a partition plate 13 formed on the inner side surfaces of the upper and lower ends of the ring body 11, a cover plate installation groove 16 and a module installation groove 17 formed by dividing the central hole 12 at the upper and lower ends by the partition plate 13, and a protruding stopper 15 protruding from the rear side or the front side of the upper and lower ends of the ring body 11 to the outer periphery. The outer peripheral surface of the ring body 11 is a polishing surface 14 that needs to be polished. Except for the polishing surface 14, the rest of the parts need to be covered and cannot be polished to avoid causing precision problems.

[0031] Please continue reading Figure 3 , Figure 4 As shown, the polishing mechanism of the present application includes a bracket 20 and a fixture 30 fixed on the bracket 20. The bracket 20 includes a connecting plate 21, a manipulator fixing member 23 and a bearing mounting plate 22 fixed at the front and rear ends of the connecting plate 21, a tail top 24 fixed to the outer side of the bearing mounting plate 22, and a locking block 25.

[0032] The connecting plate 21 includes a connecting plate body 211 extending in the front-to-back direction, and a reinforcing plate 212 fixed to the lower left and right sides of the connecting plate body 211. The manipulator fixing member 23 includes a connecting portion 231 fixed to the lateral outer side of the rear end of the connecting plate body 211, a main frame 232 extending from the connecting portion 231, and a mounting hole 233 surrounded by the main frame 232, wherein a manipulator connected to the locking block 25 is installed in the mounting hole 233. The manipulator can move or remove the locking block 25 to take out the clamp 30 fixed in the locking block 25.

[0033] The bearing mounting plate 22 includes a fixing portion 221 fixed to the front end of the connecting plate body 211, a bearing mounting portion 222 extending downward from the fixing portion 221, and a bearing 223 arranged on the bearing mounting portion 222. Specifically, the bearing mounting portion 222 is formed with a hole structure in the front-to-back direction, and the bearing 223 is installed and fixed in the hole structure. The tail top 24 includes a horizontal portion 241 fixed to the bearing mounting plate 22 at the rear end, a top plate 242 extending downward from the front end of the horizontal portion 241, a copper sleeve 244 passing through the top plate 242 and fixed in the top plate 242, a push rod 245 passing through the copper sleeve 244, a spring 246 supported between the rear end of the push rod 245 and the inner side of the top plate 242, and a pin 243 locking the front end of the push rod 245 to the front end of the top plate 242. The push rod 245 includes a push rod body 2451 and a push top end 2452 formed at the rear end of the push rod body 2451. The outer diameter of the push top end 2452 is larger than the outer diameter of the push rod body 2451. One end of the push rod body 2451 emerges from the front end of the top plate 242 and is locked by the pin 243 at the front side of the top plate 242. The spring 246 is sleeved outside the push rod body 2451 and one end is limited to the push top end 2452, and the other end is limited to the inner side of the top plate 242, so that the spring 246 applies a backward force to the push top end 2452. The push rod 245 is directly opposite to the bearing 223 on the bearing mounting plate 22, and it is optimal that the copper sleeve 244 is coaxial with the bearing 223.

[0034] Please continue reading Figures 5 to 8 As shown, the fixture 30 includes a string rod 31, an end lock 34 fixed to the front and rear ends of the string rod 31, a plurality of workpieces 10 relatively oppositely sleeved outside the string rod 31, a spacer 32 clamped between the cover plate mounting grooves 16 of two adjacent workpieces 10, and a spacer 33 clamped between the module mounting grooves 17 of two adjacent workpieces 10. The plurality of workpieces are arranged in reverse, that is, the module mounting groove 17 of the first workpiece 10 faces the rear, and the cover plate mounting groove 16 of the second workpiece 10 faces the rear, that is, the cover plate mounting groove 16 of the first workpiece faces the cover plate mounting groove 16 of the second workpiece 10; the module mounting groove 17 of the third workpiece 10 faces the module mounting groove 17 of the second workpiece 10, and they are arranged in sequence, and the number of the workpieces 10 strung in is kept even.

[0035] The septum 32 includes a septum ring body 321, a septum hole 322 formed in the middle of the septum ring body 321, septum protrusions 324 protruding from the front and rear sides of the septum ring body 321 and located at the outer edges of the septum hole 322, and side edge recesses 325 formed on the outer peripheral edges of the septum protrusions 324. The side edge recesses 325 are formed at the outer edges of the front and rear ends of the septum ring body 321, that is, the septum protrusions 324 and the outer side of the septum ring body 321 form a step structure.

[0036] The spacer 33 includes a spacer ring body 331, a spacer hole 332 formed in the middle of the spacer ring body 331, a concave platform 334 formed on the upper and lower sides of the spacer ring body 331, a side surrounding portion 335 extending upward from the outer circumference of the concave platform 334, a spacer convex portion 336 protruding from the spacer ring body 331 at the periphery of the spacer hole 332 in the front-to-back direction, and a side edge step 337 recessed from the outer circumference of the spacer convex portion 336. Except for the two spacers 33 arranged at the outermost front and rear sides, the front and rear sides of all other spacers 33 are symmetrically arranged, that is, the spacer convex portion 336, the side edge step 337, the concave platform 334, etc. are arranged on both the front and rear sides of the spacer 33.

[0037] During assembly, an end lock 34 is pre-fixed at one end of the string rod 31, and then the spacer 33, the workpiece 10 facing the first direction, the spacer 32, and the workpiece 10 facing the second direction are sequentially inserted into the string rod 31, and finally a spacer 33 and the end lock 34 that limits the other end of the string rod 31 are inserted to complete the clamping of the string rod 31. The handle connecting rod 35 is fixed to one end of the string rod 31, and the other end of the string rod 31 is fixed to the locking block 25. At this time, one side of the module mounting groove 17 of the workpiece 10 corresponds to the spacer 33, and one side of the cover plate mounting groove 16 of the workpiece 10 corresponds to the spacer 32. Specifically, the cover plate mounting groove 16 of the workpiece 10 accommodates the spacer protrusion 324 of the spacer 32, and the ring body 11 on the outer periphery of the cover plate mounting groove 16 is accommodated in the side edge recess 325. The module installation groove 17 of the workpiece 10 accommodates the spacer protrusion 336, the ring body 11 on one side of the module installation groove 17 is accommodated on the side edge step 337, and the protruding stopper 15 is accommodated in the concave platform 334 and surrounded and protected by the side surrounding portion 335. In this way, the workpiece 10 only exposes the polishing surface 14 outside the fixture 30, and the rest of the workpiece 10 is protected. During polishing, only the polishing surface is polished, and the rest of the workpiece is not polished to cause product quality problems.

[0038] When the polishing mechanism of the present application is polishing, one end of the string rod 31 of the clamp 30 is fixed in the locking block 25 and connected to the manipulator, and the other end of the string rod 31 is fixed on the handle connecting rod 35. One end of the handle connecting rod 35 passes through the bearing 223 of the bearing mounting plate 22 and abuts against the pushing end 2452 of the push rod 245. Under the thrust of the spring 246, the pushing end 2452 of the push rod 245 always squeezes the handle connecting rod 35 to press the clamp 30 toward the side of the locking block 25, so that the workpiece 10 and the spacer 33 and the spacer 32 are always kept in a pressed state.

[0039] During polishing, the manipulator drives the locking block 25 to rotate, and at the same time, the fixture is rotated 360 degrees for polishing.

[0040] The fixture and polishing mechanism of the present application respectively engage and protect the two side surfaces of the asymmetrically structured workpiece 10 by setting the spacer 32 and the spacer 33, so that only the polishing surface 14 is exposed to the outside for polishing, and multiple workpieces can be polished at one time, which greatly improves the efficiency and ensures the polishing quality. At the same time, the polishing mechanism is provided with the tail top 24, so that the push rod 245 always maintains the engagement density between the workpiece 10 and the spacer 32 and the spacer 33 under the elastic force of the spring 246, ensuring that the product will not be polished except for the polishing surface during the polishing process.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fixture for clamping a workpiece for polishing, characterized in that: The fixture comprises a string rod, a spacer sequentially sleeved on the string rod, a workpiece sleeved on the string rod in a first direction, a spacer sleeved on the string rod, a workpiece sleeved on the string rod in a second direction opposite to the first direction, a spacer sleeved on the string rod, and end locks sleeved on both ends of the string rod and respectively abutting against the spacer, the workpiece comprises a hollow ring body with a central hole, and a partition plate protruding from the inner sides of the upper and lower ends of the ring body, the outer peripheral surface of the ring body is a polished surface, and a cover plate mounting groove and a module mounting groove are respectively formed on the front and rear sides of the partition plate, the module mounting groove is engaged with the spacer, and the cover plate mounting groove is engaged with the spacer; The spacer comprises a spacer ring body, a spacer hole formed in the middle of the spacer ring body and extending from front to back, a spacer convex portion protruding from the spacer ring body at the periphery of the spacer hole in the front-to-back direction, and a side edge step formed by being recessed from the outer periphery of the spacer convex portion, the module installation groove of the workpiece receives the spacer convex portion, and the ring body at the periphery of the module installation groove is received on the side edge step; The workpiece further comprises a protruding stopper formed by protruding from the upper and lower ends of the ring body located on one side of the module installation groove, the string rod passes through the central hole of the workpiece, the spacer further comprises a concave platform formed on the upper and lower sides of the spacer ring body and a side surrounding portion extending upward from the outer circumference of the concave platform, the protruding stopper is received in the concave platform and protected by the side surrounding portion; The spacer includes a spacer ring body, a spacer hole formed in the middle of the spacer ring body through the front and back, a spacer protrusion protruding from the front and back sides of the spacer ring body and located at the outer edge of the spacer hole, and a side edge concave portion formed on the outer peripheral edge of the spacer protrusion, the cover plate installation groove of the workpiece accommodates the spacer protrusion, and the ring body on one side of the cover plate installation groove is accommodated in the side edge concave portion; A plurality of groups of the workpieces are inserted on the string rod, and the directions of the sleeves of two adjacent workpieces are opposite, and the front and rear sides of each workpiece correspond to a spacer or a spacer respectively; A locking block is fixed at one end of the string rod, and a handle connecting rod is fixed at the other end.

2. The clamp according to claim 1, characterized in that The two partitions sleeved on the two ends of the string rod are only provided with the module installation groove on the front or rear side, and the other partitions are provided with the module installation groove and the concave platform structure on both the front and rear sides.

3. A polishing mechanism, characterized in that: It includes the clamp as described in claim 1 and a bracket for fixing the clamp, the bracket includes a connecting plate, a manipulator fixing part and a bearing mounting plate fixed at the front and rear ends of the connecting plate, a tail top and a locking block fixed to the outside of the bearing mounting plate, one end of the clamp is locked on the locking block, and the handle connecting rod at the other end of the clamp passes through the bearing mounting plate, and the locking block can rotate the clamp under the drive of the manipulator.

4. The polishing mechanism according to claim 3, characterized in that: The connecting plate includes a connecting plate body extending in the front-to-back direction, and a reinforcing plate fixed to the lower left and right sides of the connecting plate body. The manipulator fixing part includes a connecting part fixed to the laterally outer side of the rear end of the connecting plate body, a main frame extending from the connecting part, and an installation hole surrounded by the main frame, wherein a manipulator connected to the locking block is installed in the installation hole.

5. The polishing mechanism according to claim 4, characterized in that: The bearing mounting plate is provided with a bearing for the handle connecting rod to pass through and rotate. The tail top includes a horizontal part whose rear end is fixed to the bearing mounting plate, a top plate formed by extending downward from the front end of the horizontal part, a copper sleeve that passes through the top plate front and back and is fixed in the top plate, a push rod that passes through the copper sleeve, a spring that is supported between the rear end of the push rod and the inner side of the top plate, and a pin that locks the front end of the push rod to the front end of the top plate. The push rod includes a push rod body and a push top end formed at the rear end of the push rod body and supported on the handle connecting rod.

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