CN219757171U - Tappet external diameter detection device - Google Patents

Abstract

The utility model provides a tappet outer diameter detection device which comprises a base, wherein two positioning components are arranged on the base at intervals, each positioning component comprises a support and a positioning seat, a positioning hole is formed in each positioning seat, two clamping blocks are arranged in each positioning hole, one surfaces of the clamping blocks, which are close to each other, are respectively provided with a positioning cambered surface, each positioning seat is provided with a driving piece, each base is also provided with a driving component and a measuring component, each driving component is in transmission connection with one positioning seat in one positioning component and drives the corresponding positioning seat to rotate, each measuring component comprises a movable seat movably arranged on the base, an adjusting block capable of lifting along the vertical direction is arranged on the movable seat, and a dial indicator is arranged on each adjusting block, and a detection head of the dial indicator faces to an area between the two positioning components. The method solves the technical problems of complicated operation steps and low efficiency in measuring the outer diameter runout condition of the tappet, and has the technical effects of simplifying the operation steps for detecting the outer diameter runout condition of the tappet and improving the detection efficiency.

Description

Tappet external diameter detection device

Technical Field

The utility model relates to the technical field of tappet processing, in particular to a tappet outer diameter detection device.

Background

The function of the lifter is to transmit the thrust of the camshaft to the pushrod (or valve stem) and to withstand the lateral forces exerted by the camshaft as it rotates. The tappet is provided with an adjusting screw at the top for adjusting the valve clearance. After the tappet is processed, the outer diameter of the tappet needs to be detected to screen out unqualified products with unqualified sizes.

The Chinese patent publication No. CN210374929U discloses a tooling fixture for a valve tappet, which comprises a base, a detection assembly, a tappet body and a boss, wherein the detection assembly is arranged at the rear part of the top end of the base, the tappet body is arranged between the top end of the base and the detection assembly, and the boss is fixed at one end of the tappet body; the base comprises a bottom plate, a fixed table, a second arc-shaped groove, a sliding groove and saw teeth, wherein the fixed table is fixed in the middle of one side of the bottom plate, the second arc-shaped groove is formed in the top end of the fixed table, the sliding groove is formed in the other side of the bottom plate, and the saw teeth are uniformly fixed on two sides of the sliding groove; the detection assembly comprises an L-shaped support, a threaded sleeve, a screw rod, an adjusting nut, a differential cylinder, an anvil and a first arc-shaped groove, wherein one end of the upper portion of the L-shaped support is fixedly provided with the threaded sleeve, the screw rod is meshed with the threaded sleeve, the adjusting nut is meshed with the upper portion of the screw rod, the differential cylinder is fixedly arranged on the lower portion of the adjusting nut, the anvil is installed at the bottom end of the screw rod, and the first arc-shaped groove is formed in the bottom end of the anvil. Above-mentioned frock clamp of valve tappet is direct to put the tappet body at the second arc wall on fixed station top when measuring, and rotatory adjusting nut measures, because fixed station top and survey the anvil bottom and all be the arc for the tappet body is fixed relatively stable, is difficult to appear falling the condition that causes the secondary injury because of the tappet body rolls.

The tool clamp for the valve tappet disclosed by the utility model is clamped at the top end of the tappet body through the first arc-shaped groove at the bottom end of the anvil to measure the diameter of the tappet, namely the tappet is pressed on the fixing table during the measurement of the tool clamp, so that the diameter of the contact position of the tappet and the anvil can be measured only, the anvil is required to be repeatedly moved and rotated when the jumping condition of the outer diameter of the tappet is required to be measured, the operation steps are complicated, and the measurement efficiency is low.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a tappet outer diameter detection device, which solves the problems of complicated operation steps and low efficiency in the measurement of the outer diameter runout condition of a tappet in the prior art.

According to the embodiment of the utility model, the tappet outer diameter detection device comprises a base, two positioning components are arranged on the base at intervals, each positioning component comprises a support and a positioning seat rotatably arranged on the support, a penetrating positioning hole is formed in each positioning seat, the positioning holes in the two positioning seats are aligned, two clamping blocks capable of moving along the radial direction of each positioning hole are arranged in each positioning hole, positioning cambered surfaces are respectively arranged on one surface, which is close to each other, of the two clamping blocks in the same positioning hole, a driving piece for driving the two clamping blocks to be close to or away from each other is arranged on each positioning seat, a driving component and a measuring component are further arranged on the base, the driving component is in transmission connection with the positioning seat in one positioning component and drives the positioning seat to rotate, each measuring component comprises a movable seat movably arranged on the base and provided with an adjusting block capable of lifting along the vertical direction, and a dial indicator is arranged on each adjusting block and a detection head of the dial indicator faces to an area between the two positioning components.

Further, the driving piece comprises an adjusting rod rotatably arranged on the positioning seat, a first threaded portion and a second threaded portion are arranged on the adjusting rod at intervals, the rotation direction of the first threaded portion is opposite to that of the second threaded portion, a first threaded hole matched with the first threaded portion is formed in one of the two clamping blocks in the same positioning hole, and a second threaded hole matched with the second threaded portion is formed in the other one of the two clamping blocks.

Furthermore, the positioning seat is also provided with a guide rod, the axial direction of the guide rod is consistent with the axial direction of the adjusting rod, and two clamping blocks in the same positioning hole are respectively provided with guide holes matched with the guide rod.

Further, the driving assembly comprises a motor and a first gear arranged at the output end of the motor, a second gear is arranged on the positioning seat in transmission connection with the driving assembly, and the second gear is meshed with the first gear.

Further, a first sliding groove is formed in the base, the length direction of the first sliding groove is consistent with the moving direction of the movable seat, and part of the movable seat extends into the first sliding groove to be attached to the inner wall of the first sliding groove.

Further, a rotatable first screw rod is arranged on the base, the axial direction of the first screw rod is consistent with the moving direction of the movable seat, and a third threaded hole matched with the first screw rod is formed in the movable seat.

Further, a second sliding groove is formed in the movable seat, the length direction of the second sliding groove is vertical, and part of the adjusting block extends into the second sliding groove and is attached to the inner wall of the second sliding groove.

Further, a rotatable second screw rod is arranged on the movable seat, the axial direction of the second screw rod is in the vertical direction, and a fourth threaded hole matched with the second screw rod is formed in the adjusting block.

Further, the movable seat is provided with scales, the length direction of the scales is in the vertical direction, the regulating block is provided with a pointer matched with the scales, and when the pointer is aligned with zero scale marks of the scales, one end of the detecting head, which is far away from the dial indicator, is on the same horizontal plane with the circle center of the positioning hole.

Furthermore, two positioning blocks are further arranged on the base at intervals, the two positioning blocks are respectively located at one sides of the two positioning components, which are far away from each other, and V-shaped grooves are respectively formed in the two positioning blocks.

Compared with the prior art, the utility model has the following beneficial effects: through having adopted two locating component that the interval set up on the base to await measuring the tappet clamping, in stretching into two locating holes respectively at the both ends of tappet during the clamping tappet, the operation driving piece makes two clamp pieces in the same locating hole be close to each other and with tappet butt, the location cambered surface on the clamp piece is laminated with the tappet this moment, the both ends of tappet can be fixed with the position of tappet on the locating seat by the clamp piece in two locating holes respectively, remove the movable seat to suitable position and remove the adjusting block and make the detection head of percentage table and the surface butt of tappet, start the driving component and drive the locating seat rotation and can drive the tappet rotation by the clamping on the locating seat, at this moment, can detect the condition of beating of the external diameter of tappet through the change of percentage representation number, and can measure the condition of beating of the external diameter of tappet different positions through removing the position butt of movable seat messenger's detection head and tappet, only need carry out the clamping to the tappet in the measurement process can, it has solved the detection step that the measuring the tappet is loaded down with trivial details and the detection step is simplified when the external diameter condition, the same, the technological effect of detecting the tappet has been satisfied, the detection step is easy to the same, the demand of detecting operation is easy.

Drawings

FIG. 1 is a schematic diagram of a tappet outer diameter detection device according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a positioning assembly of a tappet outer diameter detection device according to one embodiment of the present utility model;

FIG. 3 is an exploded view of a positioning assembly of a tappet outer diameter detection device according to an embodiment of the present utility model;

fig. 4 is a partial exploded view of a tappet outer diameter detection device according to an embodiment of the present utility model.

In the above figures: 100. a base; 101. a first chute; 102. a first screw rod; 103. a first hand wheel; 200. a positioning assembly; 201. a bracket; 202. a positioning seat; 203. a clamping block; 204. positioning the cambered surface; 205. a driving member; 206. an adjusting rod; 207. a first threaded portion; 208. a second threaded portion; 209. a first threaded hole; 210. a second threaded hole; 211. a guide rod; 212. a guide hole; 213. a second gear; 214. an adjustment knob; 215. positioning holes; 300. a drive assembly; 301. a motor; 302. a first gear; 400. a measurement assembly; 401. a movable seat; 402. an adjusting block; 403. a dial indicator; 404. a detection head; 405. a third threaded hole; 406. a second chute; 407. a second screw rod; 408. a fourth threaded hole; 409. the second hand wheel; 410. a scale; 411. a pointer; 500. a positioning block; 501. v-shaped groove.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a tappet outer diameter detection device, which is used for detecting a runout condition of an outer diameter of a tappet, so as to screen out defective products with unqualified sizes.

Referring to fig. 1 and 2, the tappet outer diameter detection device includes a base 100, two positioning assemblies 200 are disposed on the base 100 at intervals, the positioning assemblies 200 are used for clamping a tappet to be detected, the positioning assemblies 200 include a bracket 201 and a positioning seat 202 rotatably disposed on the bracket 201, positioning holes 215 are disposed on the positioning seat 202 and penetrate through the positioning seat 202, the positioning holes 215 respectively disposed on the two positioning seats 202 are aligned, two clamping blocks 203 capable of moving along a radial direction of the positioning holes 215 are disposed in the positioning holes 215, positioning cambered surfaces 204 are disposed on one surfaces of the two clamping blocks 203 in the same positioning hole 215, and driving members 205 for driving the two clamping blocks 203 to approach or separate from each other are disposed on the positioning seat 202. When the tappet to be detected is clamped by the tappet outer diameter detection device, the tappet is sequentially inserted into the two positioning holes 215 and placed between the two clamping blocks 203 in the same positioning hole 215, the driving piece 205 is operated to drive the two clamping blocks 203 to be close to each other until the clamping blocks 203 are abutted against the tappet, at the moment, the positioning cambered surface 204 on the clamping block 203 is attached to the peripheral wall of the tappet, and the tappet can be fixed on the positioning seat 202 by clamping the tappet through the clamping block 203.

Specifically, the tappet outer diameter detection device further includes a driving assembly 300 and a measuring assembly 400, the driving assembly 300 is disposed on the base 100, the driving assembly 300 is in transmission connection with the positioning seat 202 in one of the positioning assemblies 200, the driving assembly 300 is used for driving the positioning seat 202 to rotate, and the tappet is clamped on the positioning seat 202 and then can be driven to rotate by the rotation of the positioning seat 202; the measuring assembly 400 comprises a movable seat 401 movably arranged on the base 100, the movable seat 401 can move between the two positioning assemblies 200, an adjusting block 402 capable of lifting along the vertical direction is arranged on the movable seat 401, a dial indicator 403 is arranged on the adjusting block 402, and a detection head 404 of the dial indicator 403 faces to an area between the two positioning assemblies 200. After the tappet is clamped on the positioning assembly 200, the movable seat 401 and the adjusting block 402 can be moved respectively to enable the detection head 404 to move to the position abutted against the tappet, at the moment, the driving assembly 300 drives the positioning seat 202 to rotate and drives the tappet to rotate, the outer diameter runout condition of the tappet can be detected by observing the change condition of the indication number of the dial indicator 403, and the outer diameter runout condition of a plurality of positions on the tappet can be detected by abutting against the positions of the detection head 404 and the tappet through moving the movable seat 401, and the detection process only needs to clamp the tappet once, so that the detection operation steps are effectively simplified and the detection efficiency is improved.

As shown in fig. 2 and 3, in this embodiment, the driving member 205 includes an adjusting rod 206, the adjusting rod 206 is rotatably disposed on the positioning seat 202 and the adjusting rod 206 extends into the positioning hole 215, a first threaded portion 207 and a second threaded portion 208 are disposed on a portion of the adjusting rod 206 extending into the positioning hole 215 at intervals, a rotation direction of the first threaded portion 207 is opposite to a rotation direction of the second threaded portion 208, and one of the two clamping blocks 203 in the same positioning hole 215 is provided with a first threaded hole 209 matched with the first threaded portion 207, and the other one is provided with a second threaded hole 210 matched with the second threaded portion 208. When the adjusting rod 206 is rotated, the two clamping blocks 203 can be driven to move along the axial direction of the adjusting rod 206 simultaneously by the cooperation of the first threaded portion 207 and the first threaded hole 209 and the cooperation of the second threaded portion 208 and the second threaded hole 210, and the directions of the two clamping blocks 203 moving under the driving of the adjusting rod 206 are opposite due to the opposite directions of the first threaded portion 207 and the second threaded portion 208, so that the two clamping blocks 203 in the same positioning hole 215 can be close to or far away from each other by rotating the adjusting rod 206, so that the two clamping blocks 203 clamp or far away from the tappet.

In detail, the positioning seat 202 is further provided with a guide rod 211, the axial direction of the guide rod 211 is consistent with the axial direction of the adjusting rod 206, the guide rod 211 extends into the positioning hole 215, and two clamping blocks 203 in the same positioning hole 215 are respectively provided with a guide hole 212 matched with the guide rod 211. The guide bar 211 is used for limiting the action direction of the clamping block 203 in the positioning hole 215, so as to prevent the clamping block 203 from unexpected deflection to cause the position of the tappet between the two clamping blocks 203 to be unstable.

Optionally, the driving member 205 further includes an adjusting knob 214, where the adjusting knob 214 is disposed at one end of the adjusting rod 206, and the end of the adjusting rod 206 where the adjusting knob 214 is mounted extends away from the positioning seat 202. The adjusting knob 214 is operated to rotate the adjusting rod 206, and the moving direction of the clamping block 203 can be controlled by changing the rotating direction of the adjusting knob 214, so that the positioning assembly 200 is convenient to operate.

As shown in fig. 4, the driving assembly 300 includes a motor 301 and a first gear 302 disposed at an output end of the motor 301, the motor 301 is disposed on the base 100, a second gear 213 is disposed on the positioning seat 202 in transmission connection with the driving assembly 300, and the first gear 302 is meshed with the second gear 213. The power output by the motor 301 can be transmitted to the positioning seat 202 through the cooperation of the first gear 302 and the second gear 213, and the positioning seat 202 can be driven to rotate by starting the motor 301, so that the tappet is driven to rotate.

Referring to fig. 1 and fig. 4, in order to enable the movable seat 401 to move on the base 100 smoothly, a first chute 101 is disposed on the base 100, a length direction of the first chute 101 is consistent with a moving direction of the movable seat 401, and a portion of the movable seat 401 extends into the first chute 101 and is attached to an inner wall of the first chute 101. The first sliding groove 101 is used for limiting the moving direction of the movable seat 401 on the base 100, preventing unexpected deflection when the movable seat 401 moves, and facilitating the stability of the movable seat 401 and the base 100.

Specifically, the base 100 is provided with a rotatable first screw rod 102, an axial direction of the first screw rod 102 is consistent with a moving direction of the movable seat 401, and the movable seat 401 is provided with a third threaded hole 405 matched with the first screw rod 102. The first screw rod 102 is rotated to drive the movable seat 401 to move along the axial direction of the first screw rod 102 through the cooperation of the first screw rod 102 and the third threaded hole 405, and the moving direction of the movable seat 401 can be adjusted by changing the rotating direction of the first screw rod 102, so that the position of the movable seat 401 is convenient to adjust. And a first hand wheel 103 is fixed at one end of the first screw rod 102, and the first screw rod 102 can be flexibly rotated by operating the first hand wheel 103 to adjust the position of the movable seat 401.

As shown in fig. 4, the movable seat 401 is provided with a second sliding groove 406, the length direction of the second sliding groove 406 is vertical, and a portion of the adjusting block 402 extends into the second sliding groove 406 and is attached to the inner wall of the second sliding groove 406. The second sliding groove 406 is used for guiding the adjusting block 402 to lift on the movable seat 401 and limiting the moving direction of the adjusting block 402, so as to ensure the adjusting block 402 to act along the vertical direction, and prevent the detecting head 404 and the tappet from being misplaced due to the deviation of the adjusting block 402 from the preset direction.

In detail, the movable seat 401 is provided with a rotatable second screw rod 407, the axial direction of the second screw rod 407 is in a vertical direction, and the adjusting block 402 is provided with a fourth threaded hole 408 matched with the second screw rod 407. When the second screw rod 407 is rotated, the second screw rod 407 and the fourth screw hole 408 are matched to drive the adjusting block 402 to move along the axial direction of the second screw rod 407, so that the height of the adjusting block 402 is adjusted, the position of the adjusting block 402 on the movable seat 401 is kept stable, and the phenomenon that the detecting result is influenced by unexpected actions of the dial indicator 403 in the detecting process is avoided.

Preferably, a second hand wheel 409 is fixed at one end of the second screw rod 407, the second screw rod 407 may be rotated by operating the second hand wheel 409, and the adjusting block 402 may be driven to rise or fall by changing the rotation direction of the second hand wheel 409, so that the position of the adjusting block 402 is convenient to adjust.

Referring to fig. 4, in this embodiment, a scale 410 is provided on the movable seat 401, the length direction of the scale 410 is in a vertical direction, a pointer 411 matched with the scale 410 is provided on the adjusting block 402, when the pointer 411 is aligned with a zero scale 410 line of the scale 410, one end of the detecting head 404, which is far away from the dial indicator 403, is on the same horizontal plane with the center of the positioning hole 215, and when the tappet is clamped on the positioning seat 202 and the dial indicator 403 is moved to make the detecting head 404 just contact with the tappet, at this time, the distance between the scale 410 indicated by the pointer 411 and the center of the positioning hole 215 at the contact position of the tappet and the detecting head 404 can be calculated, that is, the radius of the position on the tappet can be obtained, so as to measure the specific numerical value of the tappet size.

As shown in fig. 1 and fig. 4, the base 100 is further provided with two positioning blocks 500, two positioning blocks 500 are disposed at intervals, the two positioning blocks 500 are respectively located at one sides of the two positioning assemblies 200 away from each other, and V-shaped grooves 501 are respectively formed in the top surfaces of the two positioning blocks 500. After the tappet is inserted into the positioning hole 215, two ends of the tappet are respectively placed in the V-shaped groove 501, so that the tappet is supported by the positioning block 500 before the tappet is clamped by the clamping block 203, and the tappet is prevented from being damaged due to falling from the positioning assembly 200 in the clamping process.

As shown in fig. 1, the steps of detecting the runout condition of the outer diameter of the tappet by adopting the tappet outer diameter detection device provided in the embodiment are as follows: firstly, a tappet to be detected sequentially passes through the positioning holes 215 on the two positioning seats 202, two ends of the tappet are respectively placed into the V-shaped grooves 501 on the two positioning blocks 500, the adjusting rods 206 on the two positioning seats 202 are respectively rotated to drive the clamping blocks 203 to clamp the tappet so as to fix the tappet on the positioning seats 202, the first screw rod 102 and the second screw rod 407 are respectively rotated to enable the dial indicators 403 to move to positions where the detecting heads 404 are abutted to the tappet, the motor 301 is started to drive the positioning seats 202 to rotate and drive the tappet to rotate, the change of the indication number of the dial indicators 403 is observed to detect the jumping situation of the outer diameter of the tappet, the first screw rod 102 is rotated to enable the movable seat 401 to move along the length direction of the tappet so as to enable the detecting heads 404 to be in contact with different positions of the tappet, the outer diameter jumping situation of the tappet is detected, and after the detection is completed, the adjusting rods 206 are reversely rotated to enable the clamping blocks 203 to be pulled out of the tappet 215 from the positioning holes 215.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a tappet external diameter detection device which characterized in that: including the base, the interval is equipped with two locating component on the base, locating component includes the support and rotatable locating seat that sets up on the support, be equipped with the locating hole that runs through on the locating seat and the locating hole on two locating seats aligns, be equipped with two clamp blocks that can follow the radial movement of locating hole respectively in the locating hole and the one side that two clamp blocks in the same locating hole are close to each other is equipped with the location cambered surface respectively, be equipped with the driving piece that drives two clamp blocks and be close to each other or keep away from on the locating seat, still be equipped with driving component and measuring subassembly on the base, driving component is connected with the locating seat transmission in one of them locating component and drive the locating seat rotation, measuring subassembly is equipped with the regulating block that can follow vertical direction lift on movable seat and the movable seat that sets up on the base, be equipped with the measuring head of percentage table and percentage table on the regulating block towards the region between two locating component.

2. The tappet outer diameter detection device of claim 1, wherein: the driving piece comprises an adjusting rod which is rotatably arranged on the positioning seat, a first threaded portion and a second threaded portion are arranged on the adjusting rod at intervals, the rotation direction of the first threaded portion is opposite to that of the second threaded portion, a first threaded hole matched with the first threaded portion is formed in one of the two clamping blocks in the same positioning hole, and a second threaded hole matched with the second threaded portion is formed in the other one of the two clamping blocks.

3. The tappet outer diameter detection device as set forth in claim 2, wherein: the positioning seat is also provided with a guide rod, the axial direction of the guide rod is consistent with the axial direction of the adjusting rod, and two clamping blocks in the same positioning hole are respectively provided with guide holes matched with the guide rod.

4. The tappet outer diameter detection device of claim 1, wherein: the driving assembly comprises a motor and a first gear arranged at the output end of the motor, a second gear is arranged on the positioning seat in transmission connection with the driving assembly, and the second gear is meshed with the first gear.

5. The tappet outer diameter detection device of claim 1, wherein: the base is provided with a first chute, the length direction of the first chute is consistent with the moving direction of the movable seat, and part of the movable seat stretches into the first chute to be attached to the inner wall of the first chute.

6. The tappet outer diameter detection device of claim 1, wherein: the base is provided with a rotatable first screw rod, the axial direction of the first screw rod is consistent with the moving direction of the movable seat, and the movable seat is provided with a third threaded hole matched with the first screw rod.

7. The tappet outer diameter detection device of claim 1, wherein: the movable seat is provided with a second chute, the length direction of the second chute is vertical, and part of the regulating block extends into the second chute and is attached to the inner wall of the second chute.

8. The tappet outer diameter detection device of claim 1, wherein: the movable seat is provided with a rotatable second screw rod, the axial direction of the second screw rod is in the vertical direction, and the adjusting block is provided with a fourth threaded hole matched with the second screw rod.

9. The tappet outer diameter detection device of claim 1, wherein: the movable seat is provided with scales, the length direction of the scales is in the vertical direction, the regulating block is provided with a pointer matched with the scales, and when the pointer is aligned with zero scale marks of the scales, one end of the detecting head, which is far away from the dial indicator, is on the same horizontal plane with the circle center of the positioning hole.

10. The tappet outer diameter detection device of claim 1, wherein: the base is also provided with two positioning blocks at intervals, the two positioning blocks are respectively positioned at one sides of the two positioning components, which are far away from each other, and the two positioning blocks are respectively provided with a V-shaped groove.