Embedded Files
Week of 2/5
Week of 2/5
Discovered that baucher actually does relieve poll pressure - thought it was an error at first because it was reading negative values but that was actually just it pulling less on the poll
Week of 1/29
Week of 1/29
My goal for this week is to mount the last force sensor and add whatever finishing touches my model might need. After this I will be ready to test.
I originally tried to use a 3d printed bracket to attach the top sensor to the wood, but the hole on the cross braces was too small to put the head of the bolt through so it did not work. To resolve this, I found a metal angle bracket and it was a good size so I just used that. I also tied paracord to the bits and around the force sensors where needed. My model is fully ready for testing, I just have to make sure that the sensors get charged over the weekend so that they have enough power to collect data.
Weeks of 1/16 & 1/22
Weeks of 1/16 & 1/22
At the end of this week I plan to have all three force sensors attached to the model. One is freestanding, one needs a 3d printed bracket that still needs to be finalized, and I do not yet know how to mount the third, possibly using a dowel glued into the model. (if all else fails, duct tape solves everything)
I was able to complete the design, 3d print the bracket and attach it to the model. I only need to attach the top one now, although I am not yet sure how I will do that.
Weeks of 1/2 & 1/7
Weeks of 1/2 & 1/7
My goal for the next two weeks is to complete the construction of my model and begin testing. To do this, I have to drill & screw the base of the model on, as well as finishing my 3d model for the force probe holder and print that. I do foresee an issue, which is that once the bit blocks are in place the decorative side piece of the model will prevent me from putting in the bit. This could be resolved by a removable block, or by another solution I am not yet aware of.
I started off this set of weeks by reading an article that was relevant to my project. A link to it has been posted in the references section of my google site. I was also able to complete the wooden structure of my model, and I resolved the issue mentioned above about the bit block by only using one screw, allowing it to pivot out of the way and then back into place. I have collected the force sensors and realized that the holder I had designed for it would not actually work with the actual structure of the force sensor. To amend this, I have made a new design that can be printed after I confirm the correct dimensions with a caliper.
Week of 12/11
Week of 12/11
My goal for this week is to construct my model. I will need a part 3d printed and then the rest will be cut from wood. I am hoping that one day in the wood shop would be enough to get everything cut and then assembly should be quick as well. I still need to remember to borrow the force sensors from physics.
I was able to cut the pieces for my model and began construction. I was able to screw in the hinges and the laser cut horse head shape, so the model is beginning to come together. I plan to borrow the force sensors sometime next week after I finish construction with what I already have. I also worked on my slide presentation for December.
Week of 12/3
Week of 12/3
This week I plan on cutting out the pieces of wood for my model and beginning assembly. I will need to finalize where the force sensors will be placed on the model and borrow them from the physics class. I am currently unsure how the direct pressure force sensor will be mounted, so I will have to spend some time on that as well before I start cutting.
I got sidetracked from my goal this week because I realized that the force sensor was not the simple cube I had been using as a placeholder, and that I actually had no way to fix it to the model. I had originally planned on using wooden chucks to hold it up, but upon further investigation there would have been no way to attach it to the chuck. Instead, I spent some time this week modeling a 3d printable holder for the force sensor. I also did some more research on the sensors, hoping to find an official CAD drawing or at least measurements, but I was unsuccessful. Instead, I will have to borrow the sensors now so that I can retouch the placeholder measurements I was using in the model and make sure that it is compatible.
I should be able to print the holder first thing next week and then cut the wood for the model immediately after.
Week of 11/26
Week of 11/26
This week I plan on finalizing my plans for my model and beginning construction. Calculations are completed, but I would like to have someone check my direct pressure calculations as I am not sure they are what I think they should be.
I was able to complete a layout for all wood pieces that need to be cut, as well as setting up the horse head overlay to be laser cut. I also needed to break down some of the components before I added them to the drawing as when I initially created the cad model I simplified and joined some pieces that could not actually easily be manufactured that way. The decorative horse head has been laser cut and I will begin cutting the rest of the wood next week.
Week of 11/6
Week of 11/6
My plan for this week is to complete theoretical calculations of pressure ratios for both bits. I will use formulas for torque and figure out the angles at which pressure would most likely be applied. I am a little uncertain about the calculations for the loose ring snaffle, but I am confident I can figure it out by the end of these two weeks.
I was able to complete torque calculations for 4 different bit setups but ran into obstacles when I tried to calculate direct pressure. I found that I was unable to calculate it as it did not work well with the formulas I was using. I spent some time researching calculation methods and hope to complete those within the next week. I have not yet found the solution.
I also found that the calculations might be slightly inaccurate due to movement of the reins/headstall around the ring and the change in direction of the force as the bit rotates in the horse's mouth. I also did not include a curb chain in my calculations, which could end up changing the ratios.
Week of 10/30
Week of 10/30
My plan for this week is to begin calculating theoretical values. For this, I need to complete measurements of the placement of bit attachment points on the bits.
This week, I took measurements of both bits in hopes of calculating theoretical values for the ratio between rein pressure, poll pressure, and bit pressure. I created a sketch with dimensions and realized I needed to measure an angle, but I couldn’t find a protractor. This week I learned that the tech hallway seemingly does not own a single protractor. I was eventually able to measure the angle after taking a protractor from the physics classroom and a new one should be on the way. Next week I should be able to calculate the theoretical values and I should now have all the measurements necessary for that.
Week of 10/23
Week of 10/23
Began formulating procedure for testing once supplies are in and physical model is constructed
Loose-ring snaffle, hinges, and curb chain arrived
Plan for next week is to begin construction of model and take measurements of the two bits to ensure the dimensions allign with what was advertised.
Week of 10/16
Week of 10/16
Completed design of model that will be used for testing
Items highlighted on Bill of Materials have been ordered and should arrive some time next week
Page updated
Report abuse